CN117249282A - Gate valve main chamber, welding device and welding method for gate valve main chamber - Google Patents

Abstract

The invention relates to the technical field of valves and discloses a main cavity of a gate valve, a welding device and a welding method of the main cavity of the gate valve, wherein the welding device is provided with a first shell, a second shell, a first flange, a second flange, a third flange, reinforcing strips and a rotatable cleaning part; the first positioning part is connected with the first shell, the second shell and the two first flanges; the second positioning part is connected to the first shell and the second shell and presses the third flange; the third positioning part is connected with the first shell and the second shell, and presses and sticks the second flange and the reinforcing strip to the first shell and the second shell; assembling a main cavity of the positioning gate valve, and welding a welding seam; the technical problems that the operation is inconvenient when the main chamber is cleaned, and the welding quality is uneven when the main chamber is assembled and welded are solved.

Description

Gate valve main chamber, welding device and welding method for gate valve main chamber

Technical Field

The invention relates to the technical field of valves, in particular to a main cavity of a gate valve, a welding device and a welding method of the main cavity of the gate valve.

Background

The valve is a control component in the fluid conveying system, has the functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, shunting or overflow pressure relief and the like, and can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like;

valves are of many kinds, such as: shut-off valves, check valves, regulating valves, gate valves, etc.;

the gate valve is also called as a manual knife gate valve, and the knife gate valve is a valve with a gate plate tightly contacted with a main cavity chamber and sealed, and the principle of the gate valve is that a circular opening is formed in the main cavity chamber (the circular opening is connected with a pipeline through a flange), and the circular opening on the main cavity chamber is opened or closed by the gate plate (the gate plate moves along the main cavity chamber), so that the on-off of fluid in the pipeline is controlled;

the conventional gate valve has at least the following problems:

1. when the main chamber is cleaned, the flashboard and the main chamber are required to be disassembled (if the main chamber is not cleaned, mediums are left in the main chamber and are stuck on the flashboard, so that the sealing effect of the flashboard and the main chamber is affected, and the flashboard cannot completely disconnect fluid in a pipeline), so that the cleaning operation is inconvenient;

2. When the welding main chamber is assembled, the welding quality is uneven due to the fact that the main chamber is relatively complex in structure and irregular, and the requirement on the level of welding personnel is high;

therefore, there is a need for a flapper valve main chamber, a device and method for welding the flapper valve main chamber.

Disclosure of Invention

Aiming at the defects in the related art, the purpose is to provide a main cavity of a gate valve, a welding device and a welding method of the main cavity of the gate valve, so as to solve the technical problems that the operation is inconvenient when the main cavity is cleaned and the welding quality is uneven when the main cavity is assembled and welded in the related art.

The technical scheme for realizing the purpose is as follows: a gate valve main chamber comprising:

a first housing;

the second shell is connected to the first shell, a first inner cavity is formed between the second shell and the first shell, and a flashboard is arranged in the first inner cavity;

the two first flanges are symmetrically arranged, one first flange is connected to the side wall of the first shell, the other first flange is connected to the side wall of the second shell, and the first flanges are communicated with the first inner cavity;

the two second flanges are symmetrically arranged and are spaced from the first flange, one second flange is connected to the side wall of the first shell, the other second flange is connected to the side wall of the second shell, and the second flanges are communicated with the first inner cavity;

The third flange is connected to one end face of the first shell and one end face of the second shell;

six reinforcing strips are arranged at intervals with the first flange or the second flange, three reinforcing strips are connected to the side wall of the first shell at intervals, and the other three reinforcing strips are connected to the side wall of the second shell at intervals;

and two rotatable cleaning parts are symmetrically arranged in the first inner cavity, one rotatable cleaning part is connected to the first shell, the other rotatable cleaning part is connected to the second shell, and the rotatable cleaning parts are aligned with the second flange.

Further: the first housing or the second housing has the same structure, and comprises: the bending main body is of a [ -shaped structure in longitudinal section, a first round opening and a second round opening are formed in the bending main body, the first round opening is aligned with the first flange, and the second round opening is aligned with the second flange; the first inner convex body is connected to the inner wall of the bending main body, aligned with the first round opening and used for being in contact with the flashboard; and the two second inner convex bodies are connected to the inner wall of the bending main body at intervals, are close to the third flange and are arranged at intervals with the first inner convex bodies.

Further: the rotatable cleaning portion includes: the first seat body is connected with the bending main body; the cover body is connected to the first seat body, a second inner cavity is formed between the cover body and the first seat body, and the second inner cavity is communicated with the second round opening in an aligned mode; at least six inclined pipe orifices are arranged on the first seat body and the cover body at intervals, are communicated with the second inner cavity and face the flashboard; and the rotatable brush assembly is movably connected to the cover body, one end of the rotatable brush assembly is arranged in the second inner cavity, and the other end of the rotatable brush assembly is arranged outside the second inner cavity.

Further: the rotatable brush assembly includes: the support shaft penetrates through the cover body, one end of the support shaft is arranged in the second inner cavity, and the other end of the support shaft is arranged outside the second inner cavity; at least one first bearing seat connected to the cover and the support shaft; the impeller body is connected to one end of the supporting shaft; the clamp spring is connected to the supporting shaft and limits the impeller body; the first arm body is connected to the other end of the supporting shaft; and three scrubbing brushes are uniformly distributed on the first arm body.

A welding device for a main chamber of a gate valve, which is used for assembling and welding the main chamber of the gate valve, comprising: the first positioning part penetrates through the first inner cavity and is connected with the first shell, the second shell and the two first flanges; the second positioning part is connected to the first shell and the second shell and presses the third flange; and two third positioning parts are symmetrically arranged, the edge of each third positioning part is connected with the first shell or the second shell, and the second flange and the reinforcing strip are pressed and stuck on the first shell or the second shell at the middle part.

Further: the first positioning portion includes: the first positioning shaft section penetrates through the first inner cavity and is spliced with the first shell, the second shell and the two first flanges, and the length dimension of the first positioning shaft section is smaller than the height dimension of the first shell, the second shell and the two first flanges after being combined; and the two pressing blocks are symmetrically connected to the first positioning shaft section and lock the first shell, the second shell and the two first flanges.

Further: the second positioning portion includes: the first block is spliced with the third flange; and a second block connected to the first block, connecting the first housing and the second housing together with the first block, and pressing the third flange by the second block.

Further: the third positioning portion includes: the second arm body is arranged at intervals with the second flange and the reinforcing strip; the first handle is connected to the second arm body; the second positioning shaft section is connected to the second arm body and is spliced with the first shell and the second flange or spliced with the second shell and the second flange; six third arm bodies which are connected to the side wall of the second arm body at intervals and are spliced with the first shell or the second shell, wherein two third arm bodies are in a group, and each group is aligned with one reinforcing strip; at least six threaded pins, which are connected to the third arm body one by one and tightly prop up the first shell or the second shell; six side blocking pieces which are connected with the third arm body one by one, the side blocking pieces are spliced with the end parts of the reinforcing strips, and the two side blocking pieces limit one reinforcing strip; and at least six elastic clamping pieces are connected to the second arm body at intervals, two elastic clamping pieces are in a group, and one elastic clamping piece is clamped at the middle position of one reinforcing strip.

Further: the edge guard includes: one end of the connecting column body is connected with the third arm body; the clamping block is connected to the other end of the connecting column body, a clamping groove is formed in the clamping block, and the clamping groove is in plug-in matching with the end part of the reinforcing strip;

the elastic clamping piece comprises: one end of the second base body is connected with the second arm body; the two ends of the first central supporting shaft penetrate through a kidney-shaped through hole at the other end of the second seat body; the first roller is connected to the middle position of the first central supporting shaft and is contacted with the side wall of the reinforcing strip; the square column-shaped insertion block is arranged in the kidney-shaped through hole, and one end of the square column-shaped insertion block is inserted into the groove on the first central supporting shaft; and the spring is arranged in the kidney-shaped through hole, one end of the spring is spliced with the square column-shaped plug block, and the other end of the spring is spliced with the second seat body.

A welding method of a main cavity of a gate valve is used for assembling and welding the main cavity of the gate valve, and comprises the following steps:

connecting one rotatable cleaning part on the first shell;

connecting another rotatable cleaning part to the second shell;

the first positioning part is connected with the first shell, the second shell and the two first flanges;

The second positioning part is connected to the first shell and the second shell and presses the third flange;

the third positioning part is connected with the first shell and the second shell, and the second flange and the reinforcing strip are pressed and stuck on the first shell and the second shell;

welding a first welding seam formed between the first flange and the first shell;

welding a second welding seam formed between the first flange and the second shell;

welding a third welding seam formed between the third flange and the first shell and the second shell;

welding a fourth welding seam formed between the second flange and the first shell;

welding a fifth welding seam formed between the second flange and the second shell;

welding a sixth weld formed between the reinforcing strip and the first shell;

welding a seventh welding line formed between the reinforcing strip and the second shell;

and welding two eighth welding seams formed between the first shell and the second shell.

By adopting the technical scheme, the method has the following beneficial effects: compared with the prior art, the welding device and the welding method for the main cavity of the gate valve are provided with the first shell, the second shell, the first flange, the second flange, the third flange, the reinforcing strip and the rotatable cleaning part, when the main cavity of the gate valve is cleaned, the second flange is connected with a water pipe, after water flow enters, the main cavity is cleaned, and the water flow pushes the rotatable cleaning part to partially rotate so as to brush the gate plate, so that the cleaning operation is relatively convenient;

The first positioning part is connected with the first shell, the second shell and the two first flanges; the second positioning part is connected to the first shell and the second shell and presses the third flange; the third positioning part is connected with the first shell and the second shell, and presses and sticks the second flange and the reinforcing strip to the first shell and the second shell; after the main cavity of the gate valve is assembled and positioned, welding seams are welded, so that the welding quality is relatively consistent; therefore, the technical problems that the operation is inconvenient when the main cavity is cleaned, and the welding quality is uneven when the main cavity is assembled are solved, and the technical effects that the cleaning operation is relatively convenient and the welding quality is relatively consistent are achieved.

Drawings

FIG. 1 is a schematic diagram of a structure of a main chamber of a gate valve after assembly welding;

FIG. 2 is a schematic diagram of the structure of FIG. 1 before assembly welding;

FIG. 3 is an exploded view of the rotatable cleaning portion;

FIG. 4 is a partial cross-sectional view of a rotatable cleaning portion;

FIG. 5 is a schematic view of the structure of the impeller body;

FIG. 6 is a schematic view of the structure of the first positioning portion, the second positioning portion and the third positioning portion after assembling and positioning the main chamber of the gate valve;

FIG. 7 is a partial cross-sectional view of FIG. 6;

FIG. 8 is a schematic structural view of a third positioning portion;

FIG. 9 is a schematic structural view of an elastic clip;

FIG. 10 is a schematic view of the structure of the rotatable support and table of FIG. 6;

FIG. 11 is a schematic view of the rotatable support and table configuration;

FIG. 12 is a partial cross-sectional view of the bending arm and rotatable base 90-5;

FIG. 13 is an exploded view of the crimping arms, second bearing and split support;

FIG. 14 is a schematic view of the structure of the fourth housing;

FIG. 15 is one of the schematic structural diagrams of the rotation angle of the main chamber of the gate valve;

FIG. 16 is a second schematic view of the rotation angle of the main chamber of the gate valve;

in the figure: 10. the first housing, 11, the bent main body, 11-1, the first round opening, 11-2, the second round opening, 12, the first inner boss, 13, the second inner boss, 20, the second housing, 30, the first inner cavity, 40, the first flange, 50, the second flange, 60, the third flange, 70, the reinforcing strip, 80, the rotatable cleaning portion, 81, the first seat, 82, the cover, 83, the second inner cavity, 84, the inclined nozzle, 84-1, the first half pipe, 84-2, the second half pipe, 85, the rotatable brush assembly, 85-1, the support shaft, 85-2, the first bearing housing, 85-3, the impeller, 85-31, the intermediate sleeve, 85-32, the blades, 85-4, the snap spring, 85-5, the first arm, 85-6, the plate brush, 100, the first positioning portion, 101, the first positioning shaft section, 102, the press block, 200, the second positioning portion, 201, 202, 300, 301, 302, first handle, 303, second positioning shaft section, 304, third arm, 305, threaded pin, 306, side stop, 306-1, connecting cylinder, 306-2, cartridge, 306-21, bayonet, 307, resilient cartridge, 307-1, second seat, 307-11, kidney-shaped through hole, 307-2, first center support shaft, 307-3, first roller, 307-4, square cylindrical insert, 307-5, spring, 1000, first weld, 2000, second weld, 3000, third weld, 4000, fourth weld, 5000, fifth weld, 6000, sixth weld, 7000, seventh weld, 8000, eighth weld, 90, rotatable support, 90-1, 90-2, bent arms, 90-21, "[" shaped arms, 90-211, first U-shaped through slots, 90-22, side arms, 90-3, second bearing, 90-4, third bearing, 90-5, rotatable bearing, 90-51, support, 90-52, first bearing, 90-53, second center support, 90-54, gland, 90-55, semi-support, 90-551, first arc-shaped blocks, 90-552, second arc-shaped blocks, 90-553, intermediate joint, 90-56, second bearing, 90-57, first threaded pins, 90-6, motor, 90-7, shroud, 90-8, second support post, 90-9, fourth bearing, 90-91, L-shaped base, 90-911, second U-shaped through slots, 90-92, second handle, 90-93, third support, 90-94, second roller, 90-95, second threaded pins, 90-10, third bearing, arc-shaped work table, 910.

Detailed Description

In order that the contents may be more readily understood, a further detailed description is provided below, according to specific embodiments, in conjunction with the accompanying drawings;

the utility model provides a welding set and welding method of push-pull valve main chamber, has solved in the correlation technique when wasing the main chamber, and inconvenient operation to when assembling the welding main chamber, welding quality uneven technical problem has reached and has washd that the operation is relatively convenient, and welding quality is unanimous positive effect relatively, and the overall thinking is as follows:

one embodiment is:

as shown in fig. 1, 2, 3, 4 and 5; the utility model provides a welding set and welding method of push-pull valve main chamber, push-pull valve main chamber includes:

a first housing 10;

the second shell 20 is connected to the first shell 10, a first inner cavity 30 is formed between the second shell 10 and the first shell 10, and a flashboard is arranged in the first inner cavity 30;

two first flanges 40, symmetrically disposed, one first flange 40 is connected to the side wall of the first housing 10, the other first flange 40 is connected to the side wall of the second housing 20, and the first flange 40 is in communication with the first inner cavity 30;

Two second flanges 50 symmetrically arranged at intervals from the first flange 40, one second flange 50 being connected to the side wall of the first housing 10, the other second flange 50 being connected to the side wall of the second housing 20, the second flange 50 being in communication with the first inner cavity 30;

a third flange 60 connected to one end surfaces of the first and second housings 10 and 20;

six reinforcing strips 70 spaced apart from the first flange 40 or the second flange 50, three of the reinforcing strips 70 being connected to the side wall of the first housing 10 at intervals, and the other three of the reinforcing strips 70 being connected to the side wall of the second housing 20 at intervals;

and two rotatable cleaning portions 80 symmetrically disposed within said first interior cavity 30, one of said rotatable cleaning portions 80 being connected to said first housing 10 and the other rotatable cleaning portion 80 being connected to said second housing 20, said rotatable cleaning portions 80 being aligned with said second flange 50;

specifically, in the implementation, the first casing 10, the second casing 20, the first flange 40, the second flange 50, the third flange 60, the reinforcing strip 70 and the rotatable cleaning part 80 are arranged, when the main cavity of the gate valve is cleaned, the second flange 50 is connected with a water pipe, after water flow enters, the main cavity of the gate valve is cleaned, and the water flow pushes the rotatable cleaning part 80 to rotate locally so as to brush the gate plate, so that the cleaning operation is relatively convenient;

The first housing 10 or the second housing 20 has the same structure, and includes: the bending main body 11 has a cross-shaped longitudinal section of the bending main body 11, the bending main body 11 is provided with a first round opening 11-1 and a second round opening 11-2, the first round opening 11-1 is aligned with the first flange 40, and the second round opening 11-2 is aligned with the second flange 50; a first inner protrusion 12 connected to the inner wall of the bent body 11, aligned with the first round opening 11-1, for contacting the shutter; and two second inner convex bodies 13, which are connected to the inner wall of the bending main body 11 at intervals, are close to the third flange 60 and are arranged at intervals with the first inner convex bodies 12;

the section of the bending main body 11 is in a [ -shaped structure, and after the two bending main bodies 11 are combined, the appearance is in a cuboid-shaped structure, and the shape is relatively regular and attractive;

the first inner convex body 12 is of a circular ring structure, is integrally cast and formed with the first shell 10 or the second shell 20, contacts and adheres to the flashboard through the end face of the first inner convex body 12 to form a seal, disconnects fluid in a pipeline connected to the first flange 40, and circulates along the first flange 40 and the first circular port 11-1 after the flashboard is opened;

The longitudinal section of the second inner convex body 13 is of an arc structure, is integrally cast with the first shell 10 or the second shell 20, is used for penetrating a bolt member between the second positioning part 200 to be connected, and presses the third flange 60, so that the third flange 60 is tightly attached to one end face of the first shell 10 and one end face of the second shell 20, and is beneficial to welding a third welding seam 3000;

the first inner cavity 30 formed by combining the first casing 10 and the second casing 20 is favorable for accommodating the rotatable cleaning part 80, and the flashboard can smoothly move along the first inner cavity 30 to be contacted with or separated from the first inner convex body 12, so that the reliability of the structure is relatively good;

the first flange 40 is a circular flange; the second flange 50 is a circular flange and is connected with the flange on the water pipe through a bolt piece, and when the cleaning is not needed, a circular blank plate is connected with the second flange 50 by penetrating the bolt piece, so that the second flange 50 is sealed; the third flange 60 is a square flange, and is used for penetrating a bolt member to connect with a gate valve mounting base, and the gate valve mounting base is of a common structure in the prior art and is common knowledge; the reinforcement bar 70 has a rectangular bar-shaped structure for increasing structural strength of the first and second cases 10 and 20;

The rotatable washing part 80 includes: a first seat 81 connected to the bending main body 11; the cover 82 is connected to the first seat 81, a second inner cavity 83 is formed between the cover 82 and the first seat 81, and the second inner cavity 83 is communicated with the second round port 11-2 in an aligned manner; at least six inclined nozzles 84 disposed at intervals on the first seat 81 and the cover 82, communicating with the second inner chamber 83, facing the shutter; the rotatable brush assembly 85 is movably connected with the cover 82, one end of the rotatable brush assembly is arranged in the second inner cavity 83, and the other end of the rotatable brush assembly is arranged outside the second inner cavity 83;

the first seat 81 has a T-shaped structure in shape, is connected with the bending main body 11 through a bolt piece, and is convenient to install and detach;

the cover 82 is of a plate-shaped structure, is connected with the first seat 81 through a bolt, is convenient to mount and dismount, and forms a second inner cavity 83 with the first seat 81, so that water is collected in the second inner cavity 83, water flow can be sprayed out along the inclined pipe orifice 84 after flushing the rotatable brush assembly 85, and the purpose of flushing the first inner cavity 30 and the flashboard is achieved;

the angled nozzle 84 includes: the first half pipe 84-1 has a cross section of a U-shaped structure and is uniformly distributed on the first seat 81; and the second half pipe 84-2 has a cross section of a U-shaped structure, is uniformly distributed on the cover 82, and forms a square water spray opening after the second half pipe 84-2 is aligned and combined with the first half pipe 84-1, so that water flow can wash the rotatable brush assembly 85, the rotatable brush assembly 85 rotates, the scrubbing brush 85-6 scrapes the flashboard, and the effect of cleaning the first inner cavity 30 and the flashboard is better;

The rotatable brush assembly 85 includes: a support shaft 85-1 penetrating the cover 82, one end of which is disposed in the second inner cavity 83 and the other end of which is disposed outside the second inner cavity 83; at least one first bearing seat 85-2 connected to the cover 82 and connected to the support shaft 85-1; an impeller body 85-3 connected to one end of the support shaft 85-1; the clamp spring 85-4 is connected to the support shaft 85-1 and limits the impeller body 85-3; a first arm body 85-5 connected to the other end of the support shaft 85-1; and three scrubbing brushes 85-6 uniformly distributed on the first arm body 85-5;

the support shaft 85-1 is a stepped shaft; the first bearing seat 85-2 is a conventional structure in the art, such as: the flange bearing seat is connected with the cover 82 by penetrating a bolt, and is connected with a limiting support shaft 85-1, and the support shaft 85-1 can freely rotate;

the impeller body 85-3 includes: the middle sleeve body 85-31 is connected with the support shaft 85-1; twelve blades 85-32 are uniformly distributed on the middle sleeve body 85-31; the middle sleeve body 85-31 is sleeved on the support shaft 85-1, and a key is arranged between the middle sleeve body and the support shaft 85-1; the section of the blade 85-32 is of a corrugated structure, and the contact area of the corrugated structure with water flow is relatively large when the corrugated structure is flushed by the water flow, so that the impeller body 85-3 is favorable for being flushed and rotated by the water flow, and the linkage support shaft 85-1 rotates, so that the scrubbing brush 85-6 scrapes the flashboard;

The clamp spring 85-4 is of a common structure in the prior art, is clamped on the support shaft 85-1, limits the impeller body 85-3, and prevents the impeller body 85-3 from being separated from the support shaft 85-1;

the first arm 85-5 includes: the middle connecting block is connected with the supporting shaft 85-1 by penetrating a bolt; the three first plates are uniformly distributed on the middle connecting block;

the scrubbing brush 85-6 is of a common structure in the prior art, is connected to the first plate through a bolt piece and is used for scraping the flashboard, and the brush hair on the scrubbing brush 85-6 is of a soft structure, so that the normal movement of the flashboard is not influenced when the brush hair contacts with the flashboard, and the flashboard can be cleaned;

the rotatable cleaning part 80 is arranged, a water pipe is connected at the second flange 50, pressurized water flows into the second inner cavity 83, the rotatable brush assembly 85 is flushed in the second inner cavity 83, the rotatable brush assembly 85 rotates, the scrubbing brush 85-6 scrapes the flashboard, and the water flows are sprayed out along the inclined pipe orifice 84, so that the effect of cleaning the first inner cavity 30 and the flashboard is better;

another embodiment is:

as shown in fig. 1, 2, 6, 7, 8 and 9; when implementing, the welding set of push-pull valve main chamber for the group welds the push-pull valve main chamber includes: a first positioning portion 100 penetrating the first inner cavity 30 and connecting the first housing 10, the second housing 20 and the two first flanges 40; a second positioning portion 200 connected to the first housing 10 and the second housing 20 for pressing the third flange 60; the two third positioning parts 300 are symmetrically arranged, the edges of the third positioning parts are connected with the first shell 10 or the second shell 20, and the middle parts press the second flange 50 and the reinforcing strip 70 against the first shell 10 or the second shell 20;

The first positioning part 100 includes: a first positioning shaft section 101 penetrating the first inner cavity 30 and being inserted into the first housing 10, the second housing 20 and the two first flanges 40, wherein the length dimension of the first positioning shaft section 101 is smaller than the combined height dimension of the first housing 10, the second housing 20 and the two first flanges 40; two pressing blocks 102 symmetrically connected to the first positioning shaft section 101 for locking the first housing 10, the second housing 20 and the two first flanges 40; the first positioning shaft section 101 is of a cylindrical structure, is spliced with the first shell 10, the second shell 20 and the two first flanges 40, and is convenient to assemble; the shape of the pressing block 102 is a T-shaped structure, and the pressing block is connected with the first positioning shaft section 101 by penetrating a bolt;

the outer diameter size of the press block 102 is smaller than the outer diameter size of the first flange 40, and the size is controlled so that the press block 102 does not form a barrier, and the welding of the first welding line 1000 and the second welding line 2000 can be smoothly performed;

the second positioning part 200 includes: a first block 201, which is inserted into the third flange 60; and a second block 202 connected to the first block 201, connecting the first housing 10 and the second housing 20 together with the first block 201, and the second block 202 pressing the third flange 60; the first block 201 is in a square block structure and is in plug-in matching with the third flange 60; the second block 202 has a square block structure and is integrally formed with the first block 201;

The second positioning part 200 penetrates the bolt member to be connected with the second inner convex body 13, presses the third flange 60, and enables the third flange 60 to be tightly attached to one end face of the first shell 10 and one end face of the second shell 20;

the third positioning part 300 includes: a second arm 301 spaced apart from the second flange 50 and the reinforcing strip 70; a first handle 302 connected to the second arm 301; a second positioning shaft section 303, which is connected to the second arm 301, and is inserted into the first housing 10 and the second flange 50, or is inserted into the second housing 20 and the second flange 50; six third arms 304, which are connected to the side wall of the second arm 301 at intervals, and are inserted into the first casing 10 or the second casing 20, wherein two third arms 304 are combined into a group, and each group is aligned with one reinforcing strip 70; at least six threaded pins 305, which are connected to the third arm 304 in a one-to-one manner, for pressing against the first casing 10 or the second casing 20; six side stoppers 306, which are connected to the third arm body 304 in a one-to-one manner, wherein the side stoppers 306 are inserted into the ends of the reinforcing strips 70, and two side stoppers 306 limit one reinforcing strip 70; and at least six elastic clamping pieces 307, which are connected to the second arm 301 at intervals, wherein two are a group, and one group of the elastic clamping pieces 307 clamps the middle position of one reinforcing strip 70;

The second arm 301 has a strip-shaped structure, which is beneficial to connecting and arranging other components;

the first handle 302 has a general 'shape' structure, and is welded with the second arm 301, so that the first handle is convenient for an operator to grasp and operate;

the second positioning shaft section 303 is a stepped shaft, is welded with the second arm 301 and is spliced with the second round opening 11-2 and the second flange 50, so that the second flange 50 is limited, and the second flange 50 is tightly attached to the first shell 10 or the second shell 20;

the third arm body 304 has an L-shaped structure, has elasticity, is welded with the second arm body 301, is clamped on the first shell 10 or the second shell 20, and is tightly held by the first shell 10 or the second shell 20;

the threaded pin 305 is in threaded connection with the third arm body 304, and tightly pushes against the first shell 10 or the second shell 20, so that the connection reliability between the third arm body 304 and the first shell 10 or the second shell 20 is better;

the edge dam 306 includes: a connecting column 306-1, one end of which is connected with the third arm 304; the clamping block 306-2 is connected to the other end of the connecting column body 306-1, the clamping block 306-2 is provided with a clamping groove 306-21, and the clamping groove 306-21 is in plug-in matching with the end part of the reinforcing strip 70; the connecting column 306-1 is in a cylindrical structure and is welded with the third arm body 304; the clamping block 306-2 is in a square block structure and is welded with the connecting column 306-1; the clamping groove 306-21 is in plug-in matching with the end part of the reinforcing strip 70; the provision of the side stopper 306 facilitates the limiting of the reinforcing strip 70 and enables the reinforcing strip 70 to be pressed against the first casing 10 or the second casing 20;

The elastic clip 307 includes: a second seat 307-1, one end of which is connected to the second arm 301; a first central supporting shaft 307-2 having both ends penetrating through kidney-shaped through holes 307-11 formed at the other end of the second housing 307-1; a first roller 307-3 connected to the middle of the first center support shaft 307-2 and contacting the sidewall of the reinforcing bar 70; a square column-shaped insertion block 307-4 arranged in the kidney-shaped through hole 307-11, one end of which is inserted into the groove 307-21 on the first center support shaft 307-2; and a spring 307-5 disposed in the kidney-shaped through hole 307-11, one end of which is inserted into the square column-shaped insertion block 307-4, and the other end of which is inserted into the second seat 307-1;

the second seat 307-1 has a substantially L-shaped configuration and is welded to the second arm 301; the first central support shaft 307-2 is a stepped shaft; the recess 307-21 is a "U" shaped recess; the first roller 307-3 is of a conventional construction in the prior art; the square column-shaped insertion block 307-4 is tightly inserted with the groove 307-21, so that the installation and the disassembly are convenient; spring 307-5 is a prior art cylindrical spring;

the elastic clamping piece 307 is arranged, the first roller 307-3 is in contact with the side wall of the reinforcing strip 70, the first central supporting shaft 307-2 moves towards the first shell 10 or the second shell 20 along the reinforcing strip 70, the first central supporting shaft 307-2 moves towards the kidney-shaped through hole 307-11, the square column-shaped inserting block 307-4 compresses the spring 307-5, the elastic force generated by the spring 307-5 enables the first roller 307-3 to be always tightly attached to the reinforcing strip 70, the reinforcing strip 70 is clamped, the elastic clamping piece 307 and the side blocking piece 306 limit the reinforcing strip 70 together, the reinforcing strip 70 can be tightly pressed on the first shell 10 or the second shell 20, and the position of the reinforcing strip 70 is relatively consistent with that of the first shell 10 or the second shell 20;

The first, second and third positioning parts 100, 200 and 300 are provided such that the positions of the first, second, first, second and third housings 10, 20, 40, 50, 60, 70 and 80 are positioned to be relatively uniform, and the quality after assembly welding is relatively uniform;

another embodiment is:

as shown in fig. 1, 2, 3, 4, 5, 6, 7, 8 and 9; when the welding method is implemented, the welding device based on the main cavity of the gate valve is used for assembling and welding the main cavity of the gate valve, and comprises the following steps:

the first casing 10 is connected with a rotatable washing part 80;

another one of the rotatable washing parts 80 is connected to the second housing 20;

the first positioning part 100 connects the first housing 10, the second housing 20, and the two first flanges 40;

the second positioning part 200, which is connected to the first casing 10 and the second casing 20, presses the third flange 60;

the third positioning part 300 is connected with the first casing 10 and the second casing 20, and presses the second flange 50 and the reinforcing strip 70 against the first casing 10 and the second casing 20;

Welding a first weld 1000 formed between the first flange 40 and the first housing 10;

welding a second weld 2000 formed between the first flange 40 and the second housing 20;

welding a third welding seam 3000 formed between the third flange 60 and the first and second cases 10 and 20;

welding a fourth weld 4000 formed between the second flange 50 and the first housing 10;

welding a fifth weld 5000 formed between the second flange 50 and the second housing 20;

welding a sixth weld 6000 formed between the reinforcing bar 70 and the first casing 10;

welding a seventh weld 7000 formed between the reinforcing strip 70 and the second housing 20;

welding two eighth welds 8000 formed between the first casing 10 and the second casing 20;

the first weld 1000 and the second weld 2000 are annular welds; the third weld 3000 is a square weld; the fourth weld 4000 and the fifth weld 5000 are annular welds; the sixth welding seam 6000 and the seventh welding seam 7000 are strip welding seams and are welded in a discontinuous welding mode; eighth weld 8000 is a strip weld;

After the assembly welding is completed, the first positioning part 100, the second positioning part 200 and the third positioning part 300 are disassembled, and the assembly welding is repeated;

another embodiment is:

as shown in fig. 10, 11, 12, 13, 14, 15, and 16; in practice, the method further comprises the following steps: a rotatable support 90 connected to the table 910 for linking the rotation angle of the main chamber of the gate valve;

the rotatable support 90 includes: two first supporting columns 90-1, which are connected with the pressing blocks 102 one by one; a bending arm 90-2 having one end inserted into the first supporting column 90-1 and the other end away from the first housing 10 and the second housing 20; two second bearing posts 90-3, which are connected with the first bearing posts 90-1 one to one, and are symmetrically connected with one end of the bending arm 90-2; a third base 90-4 connected to the table 910; the rotatable seat body 90-5 is connected to the third seat body 90-4 and is used for connecting the other end of the bending arm 90-2; a motor 90-6 connected to the third base 90-4 for linking the local rotation of the rotatable base 90-5 and linking the rotation of the bending arm 90-2; a cover 90-7 attached to the table 910 to cover the third housing 90-4, the rotatable housing 90-5, and the motor 90-6; a second supporting column 90-8 connected to the second positioning part 200; the bottom of the fourth seat body 90-9 is slidably connected with the arc-shaped groove 910-1 on the workbench 910, and the top of the fourth seat body is spliced with the second supporting column body 90-8; the third bearing seat 90-10 is connected to the fourth seat body 90-9 and supports the second supporting column body 90-8, and the second supporting column body 90-8 can rotate by taking the third bearing seat 90-10 as a rotation center;

The first supporting column body 90-1 is of a T-shaped structure, is connected with the pressing block 102 by penetrating the bolt pieces, is convenient to mount and dismount, and forms a reliable supporting structure;

the bending arm 90-2 includes: one end of the [ -shaped arm body 90-21 is provided with a first U-shaped through groove 90-211, the first U-shaped through groove 90-211 is inserted into the first supporting column body 90-1, and the first U-shaped through groove 90-211 is arranged, so that the first supporting column body 90-1 and the bending arm 90-2 are relatively convenient to assemble; and two side arms 90-22 symmetrically connected to the other ends of the [ -shaped arms 90-21;

the second bearing housing 90-3 is a structure commonly used in the art, such as: the flange bearing seat is connected with the bending arm 90-2 by penetrating a bolt, and is connected with and supports the first supporting column body 90-1, and the first supporting column body 90-1 can freely rotate;

the third seat body 90-4 is of a cuboid structure and is formed by plate assembly welding, and is welded with the workbench 910;

the rotatable base 90-5 includes: the bottom of the supporting seat 90-51 is connected with the third seat body 90-4, and the top of the supporting seat is provided with a stepped through hole; two first bearings 90-52 symmetrically connected at the stepped through holes; the second central supporting shaft 90-53 penetrates through the stepped through hole, two ends of the second central supporting shaft protrude out of the supporting seat 90-51 and are connected and supported by the first bearing 90-52, one end of the second central supporting shaft 90-53 is connected with the bending arm 90-2, and the other end of the second central supporting shaft is connected with the motor 90-6 through a coupler; the gland body 90-54 is connected to the supporting seat 90-51 and presses the first bearing 90-52; one end of each half supporting frame 90-55 is connected with the corresponding supporting seat 90-51 to press the corresponding first bearing 90-52, and the half supporting frames 90-55 are connected through bolt pieces; the second bearing 90-56 is connected between the other end of the half supporting frame 90-55 and the bending arm 90-2; and a first threaded pin 90-57 connected to the bending arm 90-2 to bear against the half supporting frame 90-55;

The supporting seat 90-51 is connected with the third seat body 90-4 through a bolt piece, so that a reliable supporting structure is formed; the first bearings 90-52 are of a construction commonly used in the art, such as: deep groove ball bearings; the second central support shaft 90-53 is a stepped shaft; the gland body 90-54 is of a circular plate-shaped structure, is connected with the supporting seat 90-51 through a bolt, presses the first bearing 90-52, and the first bearing 90-52 cannot move, so that the reliability of the structure is good; the second bearings 90-56 are conventional structures in the art, such as: the deep groove ball bearing can reliably support and connect the bending arm 90-2, and the bending arm 90-2 can smoothly rotate; the first threaded pin 90-57 is in threaded connection with the bending arm 90-2, when the bending arm 90-2 does not need to rotate, or after the bending arm 90-2 rotates, the first threaded pin 90-57 is locked, so that the torque born by the motor 90-6 is reduced (the weight of the bending arm 90-2 and the main cavity of the gate valve enables the motor 90-6 to bear the torque), and the motor 90-6 is protected;

the half supporting frames 90-55 comprise: the first arc-shaped block 90-551 is connected with the supporting seat 90-51; a second arcuate block 90-552 connected to said second bearing 90-56; and intermediate blocks 90-553 connecting said first arcuate blocks 90-551 and said second arcuate blocks 90-552; the split supporting frame 90-55 is arranged, so that the bending arm 90-2 is supported together with the second central supporting shaft 90-53, the bending arm 90-2 can be reliably connected and supported with a main cavity of the gate valve, and the main cavity of the gate valve is smoother when rotating;

The motor 90-6 is of a construction commonly used in the art, such as: a stepping motor for generating a rotational driving force;

the shield 90-7 is connected with the workbench 910 through a bolt piece to form blocking and protecting, and is relatively attractive; the shield 90-7 is formed by combining plates, and has a square structure in appearance;

the second supporting column body 90-8 is of a T-shaped structure, is connected with the second positioning part 200 by penetrating a bolt, is convenient to mount and dismount, and forms a reliable supporting structure;

the fourth housing 90-9 includes: the top of the L-shaped seat 90-91 is provided with a second U-shaped through groove 90-911, and the second U-shaped through groove 90-911 is clamped into a second supporting column body 90-8; two second handles 90-92 symmetrically connected to the L-shaped seats 90-91; two third supporting columns 90-93 symmetrically connected to the L-shaped seat 90-91 and extending into the arc-shaped groove 910-1; two second rollers 90-94, which are connected to the third supporting columns 90-93 one by one, roll along the arc-shaped grooves 910-1; and at least one second threaded pin 90-95 connected to said L-shaped seat 90-91 against said table 910;

the second handle 90-92 is of a general [ -shaped structure, is welded with the L-shaped seat 90-91, is favorable for an operator to grasp, and enables the fourth seat 90-9 to move along the arc-shaped groove 910-1, so that the rotation angle of the main chamber of the gate valve by taking the second bearing seat 90-3 as a rotation center is realized, the position of the main chamber of the gate valve is adjusted, and the operation flexibility is good;

The third supporting column body 90-93 is a section of stepped shaft, one end of the third supporting column body is inserted between the L-shaped seat 90-91, and the other end of the third supporting column body is connected with the second roller 90-94;

the second roller 90-94 is of a common structure in the prior art, and has rolling friction with the arc-shaped groove 910-1, relatively small friction resistance, smoother movement and guiding function;

the second threaded pin 90-95 is in threaded connection with the L-shaped seat 90-91, and after the L-shaped seat 90-91 moves in place, the L-shaped seat 90-91 is locked, so that the reliability of the structure is good;

the third bearing 90-10 is of a construction commonly used in the art, such as: the flange bearing seat is connected with the L-shaped seat 90-91 through a bolt piece and supports the second supporting column body 90-8, and the second supporting column body 90-8 can freely rotate;

the workbench 910 is of a plate-shaped structure and is pre-buried in a cement foundation, so that a reliable supporting structure is formed; the arcuate recess 910-1 is generally semi-circular in configuration;

the rotatable supporting part 90 is arranged, so that the main cavity of the gate valve can be linked, the main cavity of the gate valve can rotate by an angle within 360 degrees by taking a horizontal line (approximately the horizontal center line of the first inner cavity 30) as a rotation center, and the main cavity of the gate valve can rotate by an angle with the second bearing seat 90-3 as the rotation center, and the position of the main cavity of the gate valve can be regulated, so that the flexibility of a welder in operation is better, the welding is more convenient, and the welding quality is ensured;

The structure in the prior art:

the flashboard is a common structure in the prior art, is not the invention point of the invention, and after the public content is seen, a person of ordinary skill in the art can directly and unambiguously know how to set the flashboard, and the flashboard does not need to carry out creative labor or excessive experiments;

the working principle is as follows: when the main cavity of the gate valve is cleaned, a water pipe is connected to the second flange 50, after water flow enters, the main cavity of the gate valve is flushed, and the water flow pushes the rotatable cleaning part 80 to partially rotate to brush the gate plate, so that the cleaning operation is relatively convenient;

the first positioning portion 100 connects the first housing 10, the second housing 20, and the two first flanges 40; the second positioning part 200 is connected to the first casing 10 and the second casing 20 to press the third flange 60; the third positioning part 300 is connected with the first casing 10 and the second casing 20, and presses the second flange 50 and the reinforcing strip 70 against the first casing 10 and the second casing 20; after the main cavity of the gate valve is assembled and positioned, welding seams are welded, so that the welding quality is relatively consistent;

In the description, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate orientations or positional relationships based on the positional relationships described in the drawings, and are merely for convenience of description or simplification of description, and do not indicate a specific orientation that must be possessed; the operation process described in the embodiment is not an absolute use step, and can be adjusted correspondingly in actual use;

unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art; the terms "first," "second," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another, and likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one of the components, and the terms "a" or "an" and the like, as appropriate for the context of the embodiments;

the above description is only of the preferred embodiments, but the scope of protection is not limited to the above description, and any equivalent or modified embodiments according to the technical scheme and the inventive concept disclosed by those skilled in the art should be covered in the scope of protection.

Claims (10)

1. A gate valve main chamber comprising:

a first housing (10);

the second shell (20) is connected to the first shell (10) and forms a first inner cavity (30) with the first shell (10), and a flashboard is arranged in the first inner cavity (30);

the two first flanges (40) are symmetrically arranged, one first flange (40) is connected to the side wall of the first shell (10), the other first flange (40) is connected to the side wall of the second shell (20), and the first flanges (40) are communicated with the first inner cavity (30);

the two second flanges (50) are symmetrically arranged and are spaced from the first flange (40), one second flange (50) is connected to the side wall of the first shell (10), the other second flange (50) is connected to the side wall of the second shell (20), and the second flange (50) is communicated with the first inner cavity (30);

a third flange (60) connected to one end surfaces of the first casing (10) and the second casing (20);

six reinforcing strips (70) are arranged at intervals with the first flange (40) or the second flange (50), three reinforcing strips (70) are connected to the side wall of the first shell (10) at intervals, and the other three reinforcing strips (70) are connected to the side wall of the second shell (20) at intervals;

And two rotatable cleaning portions (80) symmetrically disposed within the first interior cavity (30), one rotatable cleaning portion (80) being connected to the first housing (10) and the other rotatable cleaning portion (80) being connected to the second housing (20), the rotatable cleaning portion (80) being aligned with the second flange (50).

2. A gate valve main chamber as claimed in claim 1, wherein: the first housing (10) or the second housing (20) has the same structure and comprises: the bending main body (11), the longitudinal section of the bending main body (11) is of a [ -shaped structure, the bending main body (11) is provided with a first round opening (11-1) and a second round opening (11-2), the first round opening (11-1) is aligned with the first flange (40), and the second round opening (11-2) is aligned with the second flange (50); a first inner convex body (12) connected to the inner wall of the bending main body (11) and aligned with the first round opening (11-1) for contacting with the flashboard; and two second inner convex bodies (13) which are connected to the inner wall of the bending main body (11) at intervals, are close to the third flange (60) and are arranged at intervals with the first inner convex bodies (12).

3. A gate valve main chamber as claimed in claim 2, wherein: the rotatable cleaning portion (80) includes: a first seat (81) connected to the bending main body (11); the cover body (82) is connected to the first seat body (81), a second inner cavity (83) is formed between the cover body (82) and the first seat body (81), and the second inner cavity (83) is communicated with the second round port (11-2) in an aligned mode; at least six inclined nozzles (84) which are arranged on the first seat body (81) and the cover body (82) at intervals, are communicated with the second inner cavity (83) and face the flashboard; and a rotatable brush assembly (85) movably connected to the cover (82), one end of which is disposed in the second inner cavity (83), and the other end of which is disposed outside the second inner cavity (83).

4. A gate valve main chamber according to claim 3 wherein: the rotatable brush assembly (85) includes: a support shaft (85-1) which is inserted through the cover body (82), one end of which is arranged in the second inner cavity (83), and the other end of which is arranged outside the second inner cavity (83); at least one first bearing seat (85-2) connected to the cover (82) and connected to the support shaft (85-1); an impeller body (85-3) connected to one end of the support shaft (85-1); the clamp spring (85-4) is connected to the supporting shaft (85-1) and limits the impeller body (85-3); a first arm body (85-5) connected to the other end of the support shaft (85-1); and three scrubbing brushes (85-6) which are uniformly distributed on the first arm body (85-5).

5. Welding device for main cavity of gate valve is characterized in that: a main chamber for assembling and welding the gate valve of any one of claims 1-4, comprising: a first positioning part (100) penetrating through the first inner cavity (30) and connecting the first shell (10), the second shell (20) and the two first flanges (40); a second positioning part (200) connected to the first housing (10) and the second housing (20) and pressing the third flange (60); and two third positioning parts (300) which are symmetrically arranged, wherein the edges of the third positioning parts are connected with the first shell (10) or the second shell (20), and the second flange (50) and the reinforcing strip (70) are pressed and stuck on the first shell (10) or the second shell (20) at the middle part.

6. The welding device for the main chamber of the gate valve according to claim 5, wherein: the first positioning unit (100) includes: the first positioning shaft section (101) penetrates through the first inner cavity (30) and is spliced with the first shell (10), the second shell (20) and the two first flanges (40), and the length dimension of the first positioning shaft section (101) is smaller than the height dimension of the first shell (10), the second shell (20) and the two first flanges (40) after being combined; and two pressing blocks (102) symmetrically connected to the first positioning shaft section (101) for locking the first shell (10), the second shell (20) and the two first flanges (40).

7. The welding device for the main chamber of the gate valve according to claim 6, wherein: the second positioning portion (200) includes: a first block (201) which is inserted into the third flange (60); and a second block (202) connected to the first block (201), connecting the first housing (10) and the second housing (20) together with the first block (201), and the second block (202) pressing the third flange (60).

8. The welding device for the main chamber of the gate valve according to claim 7, wherein: the third positioning portion (300) includes: a second arm body (301) which is arranged at intervals with the second flange (50) and the reinforcing strip (70); a first handle (302) connected to the second arm (301); a second positioning shaft section (303) connected to the second arm body (301), and connected to the first housing (10) and the second flange (50) or connected to the second housing (20) and the second flange (50); six third arm bodies (304) which are connected to the side wall of the second arm body (301) at intervals and are spliced with the first shell (10) or the second shell (20), wherein two third arm bodies (304) are in a group, and each group is aligned with one reinforcing strip (70); at least six threaded pins (305) connected one-to-one to the third arm (304) and abutting against the first housing (10) or the second housing (20); six side blocking pieces (306) are connected with the third arm body (304) one to one, the side blocking pieces (306) are spliced with the end parts of the reinforcing strips (70), and two side blocking pieces (306) limit one reinforcing strip (70); and at least six elastic clamping pieces (307) which are connected to the second arm body (301) at intervals, wherein two elastic clamping pieces are in a group, and one group of elastic clamping pieces (307) clamps the middle position of one reinforcing strip (70).

9. The welding device for the main chamber of the gate valve according to claim 8, wherein: the edge guard (306) includes: a connecting column (306-1), one end of which is connected with the third arm body (304); the clamping block (306-2) is connected to the other end of the connecting column body (306-1), a clamping groove (306-21) is formed in the clamping block (306-2), and the clamping groove (306-21) is in plug-in matching with the end part of the reinforcing strip (70);

the elastic clip (307) includes: a second seat (307-1) having one end connected to the second arm (301); the first central supporting shaft (307-2) is provided with two ends penetrating through waist-shaped through holes (307-11) on the other end of the second seat body (307-1); a first roller (307-3) connected to the middle position of the first center support shaft (307-2) and contacting the side wall of the reinforcement bar (70); a square column-shaped insertion block (307-4) which is arranged in the kidney-shaped through hole (307-11) and one end of which is inserted into a groove (307-21) on the first central supporting shaft (307-2); and a spring (307-5) arranged in the kidney-shaped through hole (307-11), one end of the spring is inserted into the square column-shaped insertion block (307-4), and the other end of the spring is inserted into the second seat body (307-1).

10. A welding method of a main cavity of a gate valve is characterized by comprising the following steps of: a welding device based on the main chamber of the gate valve as claimed in any one of claims 5 to 9, for assembling and welding the main chamber of the gate valve, comprising:

-connecting to said first housing (10) one of said rotatable washing portions (80);

-connecting a further rotatable washing portion (80) to the second housing (20);

the first positioning part (100) is connected with the first shell (10), the second shell (20) and the two first flanges (40);

the second positioning part (200) is connected to the first shell (10) and the second shell (20) and presses the third flange (60);

the third positioning part (300) is connected with the first shell (10) and the second shell (20), and presses the second flange (50) and the reinforcing strip (70) to the first shell (10) and the second shell (20);

-welding a first weld (1000) formed between the first flange (40) and the first housing (10);

-welding a second weld (2000) formed between the first flange (40) and the second housing (20);

Welding a third weld (3000) formed between the third flange (60) and the first and second housings (10, 20);

-welding a fourth weld (4000) formed between the second flange (50) and the first casing (10);

-welding a fifth weld (5000) formed between the second flange (50) and the second housing (20);

welding a sixth weld (6000) formed between the reinforcement strip (70) and the first shell (10);

welding a seventh weld (7000) formed between the reinforcement strip (70) and the second housing (20);

-welding two eighth welds (8000) formed between the first casing (10) and the second casing (20).