CN114877086A - Forged steel stop valve for high-temperature and high-pressure delivery pipeline - Google Patents

Abstract

The invention belongs to the technical field of forged steel stop valves, and particularly relates to a forged steel stop valve for a high-temperature and high-pressure delivery pipeline, which comprises a first valve seat and a second valve seat, wherein the first valve seat and the second valve seat are arranged in a matched manner, a water inlet and a water outlet are respectively arranged at two ends of the first valve seat, a partition plate is arranged in the first valve seat, a water passing port is arranged on the partition plate, a corresponding sealing cover is embedded at the upper end of the second valve seat in a matched manner, a corresponding valve rod is connected to the top end of the sealing cover in a threaded manner, a sealing block is fixedly arranged in the second valve seat, the valve rod downwards penetrates through the sealing block and extends into the first valve seat to be fixedly connected with a corresponding valve plate, and the valve plate is arranged in a matched manner with the water passing port; utilize rivers impact spiral leaf to drive first bull stick and rotate as drive power, brush holder and multiunit stereoplasm brush can brush the impurity of attaching to on the filter screen except that following lift nut reciprocates to guarantee that the filter screen keeps better effect constantly.

Description

A forged steel globe valve for high temperature and high pressure conveying pipeline

technical field

The invention relates to the technical field of forged steel globe valves, in particular to a forged steel globe valve for high temperature and high pressure conveying pipelines.

Background technique

The opening and closing part of the globe valve is a plug-shaped valve disc, the sealing surface is flat or conical, and the valve disc moves linearly along the center line of the valve seat. Because the valve stem of this type of valve has a relatively short opening or closing stroke, and has Very reliable cut-off function, and because the change of the valve seat port is proportional to the stroke of the valve disc, it is very suitable for the adjustment of the flow. Therefore, this type of shut-off globe valve is very suitable for shut-off or regulation and throttling.

In the document with the patent publication number CN204729638U, it is disclosed that "a globe valve includes a valve body, a valve cover, a valve stem, a valve disc and a handwheel. The cross section of the annular convex edge is an isosceles trapezoid structure, the upper bottom surface of the isosceles trapezoid is arranged on the other side of the opposite valve cover, the surface of the annular convex edge is covered with an elastic layer, and the valve body is used for fitting One side of the valve cover is provided with an annular groove adapted to the annular convex edge, and the inner cavity of the valve body is provided with a blocking device close to the valve cover for preventing impurities in the medium from contacting the connection between the valve body and the valve cover”.

The shortcomings of this patent document; although the impurities in the circulating medium in the shut-off valve can be screened, after a period of time, the front end of the blocking device is prone to accumulation of impurities, resulting in blockage of the shut-off valve, and the blocking device cannot be carried out. clean up.

SUMMARY OF THE INVENTION

In order to make up for the problem in the prior art that impurities are easily formed at the front end of the blocking device after a period of time, resulting in blockage of the shut-off valve and inability to clean the blocking device, the present invention proposes a forged steel shut-off valve for high-temperature and high-pressure conveying pipelines .

The technical solution adopted by the present invention to solve the technical problem is as follows: a forged steel globe valve for a high temperature and high pressure conveying pipeline, comprising a first valve seat and a second valve seat, and the first valve seat and the second valve seat are matched and arranged , the two ends of the first valve seat are respectively provided with a water inlet and a water outlet, and the first valve seat is provided with a separator, the separator is provided with a water outlet, and the upper end of the second valve seat is fitted with a Corresponding sealing cover, the top of the sealing cover is threadedly connected with a corresponding valve stem, a sealing block is fixedly arranged in the second valve seat, and the valve stem extends downward through the sealing block into the first valve seat and is fixedly connected with a corresponding valve seat. The valve plate is matched with the water outlet, the water outlet is provided with a matching filter, a water pipe is arranged between the water outlet and the water outlet, and a water pipe is arranged between the water pipe and the filter. Automatic cleaning device; it can screen impurities and large particles in the liquid, and the automatic cleaning device can screen the impurities accumulated on the filter screen.

Preferably, the automatic cleaning device has a hollow ball, a first rotating rod and a second rotating rod, the hollow ball is fixedly arranged in the first valve seat, the first rotating rod is arranged along the axis of the water passage, and the first rotating rod The rod inwardly penetrates the side wall of the hollow ball and is fixedly connected with a first helical gear, and the end of the first rotating rod away from the first helical gear is fixedly provided with a plurality of groups of evenly distributed helical leaves, and the top of the second rotating rod is connected to the first valve. The inner wall of the seat is rotatably connected, and the second rotating rod is arranged downward through the hollow ball, and the second rotating rod is fixedly sleeved with a second helical gear meshing with the first helical gear, and the second rotating rod is provided with a reciprocating thread The reciprocating threaded part is located under the hollow ball, a lifting nut is threadedly connected to the reciprocating threaded part, and a corresponding brush seat is fixedly connected to the side of the lifting nut close to the filter screen, and the brush seat is close to the filter screen. A plurality of groups of uniformly distributed hard brushes are inserted at one end, and a limiting unit is arranged between the brush seat and the filter screen; the water flow impacts the spiral blade to drive the rotation of the first rotating rod as a driving force, and the first helical gear drives accordingly. The second helical gear then drives the second rotating rod to rotate, and the lifting nut reciprocates up and down along the second rotating rod. The impurities are brushed off, so as to ensure that the filter screen maintains a good function at all times.

Preferably, the limit unit includes a limit slider and a limit chute, the limit chute is located on the filter screen, and the limit slider is fixedly connected with the lifting nut; it is ensured that the lifting nut follows the second rotating rod. It does not rotate itself during the ascent.

Preferably, the hard brush is composed of multiple groups of hard carbon fibers, and the brush seat is provided with multiple groups of evenly distributed liquid seepage openings; The water flow can clean the filter screen, which improves the cleaning effect of the hard brush on the filter screen.

Preferably, the lower side wall of the first valve seat is provided with a corresponding sewage outlet, the lower end opening of the sewage outlet is provided with a corresponding blockage, and the blockage and the sewage outlet are fastened by a plurality of groups of evenly distributed fastening pins. Fixed connection; it can collect large particles of impurities falling off the filter net, and discharge the inner cavity of the first valve seat and the second valve seat in time, so as to realize the cleaning of the inside of the first valve seat and the second valve seat.

Preferably, a corresponding lifting plug is sealed and slidably connected in the sewage outlet, a threaded rod is threadedly connected at the center of the blocking, and the threaded rod penetrates the block upward and is rotatably connected to the lower side wall of the lifting plug, and is connected between the blocking and the lifting plug. It is fixedly connected through multiple sets of evenly distributed limit telescopic columns; the height of the lifting plug in the sewage outlet can be adjusted by twisting the threaded rod, so as to adjust the height of the lifting plug in time according to the accumulation of large particles of impurities in the sewage outlet, the lifting plug and the blockage Double blocking, the sealing effect is ideal.

Preferably, the lower end of the outer side wall of the second valve seat is fixedly connected with a corresponding matching lug, and the inner wall of the matching lug is sealed against the first valve seat; the sealing performance of the first valve seat and the second valve seat is enhanced to avoid The liquid diffuses outward through the gap between the first valve seat and the second valve seat.

Preferably, the water passage is set in the shape of a funnel with a large opening at the upper end and a small opening at the lower end, and the valve plate is set as a valve plate matched with the water passage, and a layer of hard sealing gasket with uniform thickness is arranged around the valve plate; The blocking effect of the valve plate on the water outlet.

The benefits of the present invention are:

1. The impurities and large particles in the liquid can be screened by setting a filter screen in the water outlet, and the water flow impacts the helical blade to drive the rotation of the first rotating rod as the driving force, and the first helical gear drives the second helical gear accordingly. The second rotating rod rotates, the lifting nut reciprocates up and down along the second rotating rod, and the brush seat and the multiple groups of hard brushes move up and down following the lifting nut, and at the same time, they can brush off the impurities attached to the filter screen, so as to Ensure that the filter screen maintains a good function at all times;

2. By setting multiple groups of seepage ports on the brush seat, while ensuring the water output efficiency of the water outlet, the water flow ejected through the seepage ports can clean the filter screen, which improves the cleaning of the filter screen by the hard brush. Through the setting of the sewage outlet and the blockage, the large particles of impurities falling on the filter can be collected, and the inner cavity of the first valve seat and the second valve seat can be discharged in time, so as to realize the internal inspection of the first valve seat and the second valve seat. cleaning up.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without any creative effort.

Fig. 1 is the overall appearance structure schematic diagram of Embodiment 1;

2 is a schematic diagram of the matching structure of the hollow ball, the first rotating rod and the second rotating rod according to the first embodiment;

3 is a schematic front cross-sectional view of Embodiment 1;

Fig. 4 is the enlarged view of A place in Fig. 3;

Fig. 5 is the enlarged view of B place in Fig. 4;

FIG. 6 is a schematic diagram of the matching structure of the sealing ring and the sealing cover according to the second embodiment.

In the figure: 1 first valve seat, 2 second valve seat, 3 sealing cover, 4 sealing ring, 5 matching ears, 6 partition plate, 7 water inlet, 8 water outlet, 9 valve stem, 10 sealing block, 11 water outlet , 12 valve plate, 13 filter screen, 14 sewage outlet, 15 blockage, 16 threaded rod, 17 lift plug, 18 limit telescopic column, 19 water pipe, 20 hollow ball, 21 first rotating rod, 22 second rotating rod, 23 first helical gear, 24 second helical gear, 25 lifting nut, 26 brush holder, 27 hard brush, 28 limit slider, 29 limit chute, 30 seepage port.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Example 1

Please refer to Figures 1-5, a forged steel globe valve for high-temperature and high-pressure conveying pipelines, comprising a first valve seat 1 and a second valve seat 2, the first valve seat 1 and the second valve seat 2 are matched and arranged, and the first valve seat 1 and the second valve seat 2 are matched. Two ends of a valve seat 1 are respectively provided with a water inlet 7 and a water outlet 8, and the first valve seat 1 is provided with a partition 6, the partition 6 is provided with a water passage 11, and the upper end of the second valve seat 2 is fitted with a The corresponding sealing cover 3, the top of the sealing cover 3 is screwed with a corresponding valve stem 9, the second valve seat 2 is fixedly provided with a sealing block 10, and the valve stem 9 penetrates the sealing block 10 downward and extends into the first valve seat 1 for fixed connection There is a corresponding valve plate 12, the valve plate 12 is matched with the water outlet 11, the water outlet is provided with a matching filter 13, and a water passage 19 is arranged between the water passage 11 and the water outlet 8, and the water passage 19 and the filter 13. An automatic cleaning device is provided between; the filter screen 13 in the water outlet 8 can screen impurities and large particles in the liquid, and the automatic cleaning device can screen the impurities accumulated on the filter screen 13 .

The automatic cleaning device has a hollow ball 20, a first rotating rod 21 and a second rotating rod 22, the hollow ball 20 is fixedly arranged in the first valve seat 1, the first rotating rod 21 is arranged along the axis of the water passage 19, and the first rotating rod 21 A first helical gear 23 is fixedly connected inwardly through the side wall of the hollow ball 20, and the end of the first rotating rod 21 away from the first helical gear 23 is fixedly provided with a plurality of groups of evenly distributed helical leaves. An inner wall of the valve seat 1 is rotatably connected, and the second rotating rod 22 is disposed downward through the hollow ball 20, and the second rotating rod 22 is fixedly sleeved with a second helical gear 24 meshing with the first helical gear 23. The rod 22 is provided with a reciprocating threaded portion, and the reciprocating threaded portion is located below the hollow ball 20. The reciprocating threaded portion is threadedly connected with a lifting nut 25. A plurality of groups of uniformly distributed hard brushes 27 are inserted at one end of the brush holder 26 close to the filter screen 13, and a limiting unit is arranged between the brush holder 26 and the filter screen 13; The arrangement of the first rotating rod 21 and the helical blade uses the water flow to impact the helical blade to drive the first rotating rod 21 to rotate as a driving force, and the first helical gear 23 drives the second helical gear 24 and then drives the second rotating rod 22 to rotate. The nut 25 reciprocates up and down along the second rotating rod 22, and the brush seat 26 and the multiple groups of hard brushes 27 move up and down following the lifting nut 25, and at the same time, they can brush off the impurities adhering to the filter screen 13, thereby It is ensured that the filter screen 13 maintains a good function at all times.

The limit unit includes a limit slider 28 and a limit chute 29, the limit chute 29 is located on the filter screen 13, and the limit slider 28 is fixedly connected with the lifting nut 25; through the limit slider 28 and the limit chute 29, so as to ensure that the lifting nut 25 will not rotate itself during the process of rising along the second rotating rod 22.

The hard brush 27 is composed of multiple groups of hard carbon fibers, and the brush seat 26 is provided with multiple groups of evenly distributed liquid seepage ports 30; While the water outlet efficiency of the water port 8 is improved, the water flow ejected through the liquid seepage port 30 can clean the filter screen 13 , which improves the cleaning effect of the hard brush 27 on the filter screen 13 .

The lower side wall of the first valve seat 1 is provided with a corresponding sewage outlet 14, and a corresponding block 15 is arranged in the lower end opening of the sewage outlet 14, and the plug 15 and the sewage outlet 14 are fastened and connected by a plurality of groups of evenly distributed fastening pins; Through the arrangement of the sewage outlet 14 and the blockage 15, the large particles of impurities dropped on the filter screen 13 can be collected, and the inner cavities of the first valve seat 1 and the second valve seat 2 can be discharged in time, so that the first valve seat 1 and the second valve seat 2 can be discharged in time. Cleaning inside the second valve seat 2 .

A corresponding lifting plug 17 is sealed and slidably connected in the sewage outlet 14, and a threaded rod 16 is threadedly connected to the center of the plug 15. They are fixedly connected by a plurality of sets of evenly distributed limit telescopic columns 18; through the cooperation of the threaded rod 16, the lifting plug 17 and the limit telescopic column 18, the movement of the lifting plug 17 in the sewage outlet 14 can be adjusted by twisting the threaded rod 16. Therefore, according to the accumulation of large particles of impurities in the sewage outlet 14, the height of the lifting plug 17 can be adjusted in time. The lifting plug 17 and the plug 15 are double blocked, and the sealing effect is ideal.

The lower end of the outer side wall of the second valve seat 2 is fixedly connected with a corresponding matching lug 5 , and the inner wall of the matching lug 5 is sealed against the first valve seat 1 ; the arrangement of the matching lug 5 strengthens the first valve seat 1 and the second valve seat 2 The tightness of the fit prevents the liquid from spreading out through the gap between the first valve seat 1 and the second valve seat 2 .

The water passage 11 is arranged in a funnel shape with a large opening at the upper end and a small opening at the lower end, and the valve plate 12 is arranged as a valve plate 12 that matches the water passage 11, and the valve plate 12 is cushioned with a layer of uniform thickness. The purpose of this is to improve the blocking effect of the valve plate 12 on the water passage 11 .

Embodiment 2

Please refer to FIG. 6 , in Comparative Example 1, as another embodiment of the present invention, the upper end of the sealing cover 3 is fixedly provided with a corresponding sealing ring 4, and the sealing ring 4 is threadedly connected with the valve stem 9; The arrangement improves the sealing performance between the valve stem 9 and the sealing cover 3 and prevents the liquid in the first valve seat 1 and the second valve seat 2 from spreading outward through the gap between the valve stem 9 and the sealing cover 3 .

The working principle is to use the water flow to impact the helical blade to drive the rotation of the first rotating rod 21 as a driving force. The first helical gear 23 then drives the second helical gear 24 to drive the second rotating rod 22 to rotate, and the lifting nut 25 rotates along the second rotating rod. 22 reciprocates up and down, the brush holder 26 and the multiple groups of hard brushes 27 move up and down following the lifting nut 25, and at the same time, they can brush off the impurities attached to the filter screen 13, so as to ensure that the filter screen 13 is kept well at all times. Through the setting of the sewage outlet 14 and the blockage 15, the large particles of impurities falling on the filter screen 13 can be collected, and the inner cavities of the first valve seat 1 and the second valve seat 2 can be discharged in time, so that the first valve seat 1 and the second valve seat 2 can be discharged in time. Cleaning inside the seat 1 and the second valve seat 2.

In the description of this specification, description with reference to the terms "one embodiment," "example," "specific example," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one aspect of the present invention. in one embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have Various changes and modifications fall within the scope of the claimed invention.

Claims (8)

1. The utility model provides a forged steel stop valve for high temperature high pressure delivery pipeline which characterized in that: the water-saving valve comprises a first valve seat (1) and a second valve seat (2), wherein the first valve seat (1) and the second valve seat (2) are arranged in a matched mode, a water inlet (7) and a water outlet (8) are respectively formed in the two ends of the first valve seat (1), a partition plate (6) is arranged in the first valve seat (1), a water passing hole (11) is formed in the partition plate (6), a corresponding sealing cover (3) is embedded in the upper end of the second valve seat (2) in a matched mode, a corresponding valve rod (9) is connected to the top end of the sealing cover (3) in a threaded mode, a sealing block (10) is fixedly arranged in the second valve seat (2), the valve rod (9) penetrates through the sealing block (10) downwards and extends into a corresponding valve plate (12) fixedly connected with the first valve seat (1), the valve plate (12) is arranged in a matched mode with the water passing hole (11), a matched filter screen (13) is arranged in the water passing hole, and a water passing pipe (19) is arranged between the water passing hole (11) and the water outlet (8), an automatic cleaning device is arranged between the water passing pipe (19) and the filter screen (13).

2. The forged steel stop valve for high-temperature and high-pressure delivery pipelines according to claim 1, wherein: the automatic cleaning device comprises a hollow ball (20), a first rotating rod (21) and a second rotating rod (22), wherein the hollow ball (20) is fixedly arranged in a first valve seat (1), the first rotating rod (21) is arranged along the axis of a water pipe (19), the first rotating rod (21) penetrates through the side wall of the hollow ball (20) inwards and is fixedly connected with a first helical gear (23), one end, far away from the first helical gear (23), of the first rotating rod (21) is fixedly provided with a plurality of groups of helical blades which are uniformly distributed, the top end of the second rotating rod (22) is rotatably connected with the inner wall of the first valve seat (1), the second rotating rod (22) penetrates through the hollow ball (20) downwards, a second helical gear (24) meshed with the first helical gear (23) is fixedly sleeved on the second rotating rod (22), a reciprocating thread portion is arranged on the second rotating rod (22), and the reciprocating thread portion is located below the hollow ball (20), threaded connection has lifting nut (25) on the reciprocal screw portion, one side fixedly connected with that lifting nut (25) are close to filter screen (13) corresponds brush holder (26), one end that brush holder (26) are close to filter screen (13) is inserted and is equipped with multiunit evenly distributed's stereoplasm brush (27), and is provided with spacing unit between brush holder (26) and filter screen (13).

3. The forged steel stop valve for high-temperature and high-pressure delivery pipelines according to claim 2, wherein: the limiting unit comprises a limiting sliding block (28) and a limiting sliding groove (29), the limiting sliding groove (29) is located on the filter screen (13), and the limiting sliding block (28) is fixedly connected with the lifting nut (25).

4. The forged steel stop valve for high-temperature and high-pressure delivery pipelines according to claim 2, wherein: the hard brush (27) is composed of a plurality of groups of hard carbon fibers, and a plurality of groups of seepage openings (30) which are uniformly distributed penetrate through the brush seat (26).

5. The forged steel stop valve for high-temperature and high-pressure delivery pipelines according to claim 1, wherein: the side wall is provided with corresponding drain (14) under first disk seat (1), be provided with corresponding jam (15) in drain (14) lower extreme opening, block up (15) and drain (14) between through multiunit evenly distributed's fastening pin fastening connection.

6. The forged steel stop valve for high-temperature and high-pressure delivery pipelines according to claim 5, wherein: the utility model discloses a sewage draining outlet, including drain (14), stopper (15) center department threaded connection have threaded rod (16), threaded rod (16) upwards run through and block up (15) and go up and down stopper (17) side wall and rotate and be connected, and block up between (15) and the lift stopper (17) spacing flexible post (18) fixed connection through multiunit evenly distributed.

7. The forged steel stop valve for high-temperature and high-pressure delivery pipelines according to claim 1, wherein: the lower end of the outer side wall of the second valve seat (2) is fixedly connected with a corresponding matching lug (5), and the inner wall of the matching lug (5) is sealed and abutted against the first valve seat (1).

8. The forged steel stop valve for high-temperature and high-pressure delivery pipelines according to claim 1, wherein: the water passing port (11) is arranged into a funnel shape with a large upper end opening and a small lower end opening, the valve plate (12) is arranged into a valve plate (12) matched with the water passing port (11), and a layer of hard sealing gasket with uniform thickness is arranged around the valve plate (12).

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