CN106352176B - A kind of quick-detachable orifice holder - Google Patents

Abstract

The invention relates to a fast detachable orifice plate fixing device, comprising a first clamping end and a second clamping end, the orifice plate is installed between the first clamping end and the second clamping end, the The first clamping end is provided with a high-pressure pipeline and a wedge-shaped locking device, and the wedge-shaped locking device is connected to the inside of the pipeline at the first clamping end through the high-pressure pipeline, and the first clamping end is also provided with a There is a pre-tightening device and a positioning hole, a locking sleeve is provided on the second clamping end, a roller bearing is arranged inside the locking sleeve, and a positioning pin is also provided on the second clamping end. The innovation of the present invention is that it is the first time to propose the use of hydraulic pressure in the pipe to achieve locking and fixing. Compared with the traditional fixing method, it has the advantages of convenient and simple operation, and can save about 90% of the workload and operation time.

Description

A fast detachable orifice plate fixing device

technical field

The invention relates to the field of orifice plate cavitation equipment, in particular to a fast detachable orifice plate fixing device.

Background technique

The orifice plate is a thin metal plate with holes, the hole wall is at right angles to the front end of the orifice plate, and the axis of the orifice plate is concentric with the pipeline axis when installed.

The traditional orifice plate fixing method is to distribute multiple bolts evenly on the outer periphery, especially when a large-size orifice plate is matched with a large-size pipe, more bolts and nuts are required. If this fixing method is used, the disassembly workload will be heavy and time-consuming Power-consuming and inconvenient to use.

In the fields of orifice cavitation and fluid experiments, the equipment often involves the fixing of the orifice plate, and it needs to be disassembled frequently in order to replace parts, clean equipment, measure data, etc. If the traditional fixing method is adopted, the repetitive workload is particularly large, and it is necessary to take improvement measures.

Contents of the invention

The purpose of the present invention is to provide a fast detachable orifice plate fixing device, which is mainly used for the convenient disassembly and fixation of orifice plates, which can greatly reduce the workload and is convenient and fast.

In order to achieve the purpose of the above invention, the technical solution adopted by the present invention is: a fast detachable orifice plate fixing device, including a first clamping end and a second clamping end, and the orifice plate is installed on the first clamping end and the second clamping end. Between the second clamping ends, the orifice plate is provided with an orifice plate fixing hole, and the first clamping end is provided with a high-pressure pipeline and a wedge locking device, and the wedge locking device passes through the The high-pressure pipeline is connected to the inside of the pipeline at the first clamping end, and a locking sleeve is provided on the second clamping end, and the locking sleeve passes through the fixing hole of the orifice plate and cooperates with the wedge locking device To realize fixing the orifice plate between the first clamping end and the second clamping end.

In the above solution, there are several wedge locking devices, and each wedge locking device is evenly distributed on the outer peripheral surface of the first clamping end; The wedge locking devices are the same, each of the locking sleeves is evenly distributed on the outer peripheral surface of the second clamping end, and each of the locking sleeves corresponds to the position of each of the wedge locking devices.

In the above solution, the wedge locking device includes a pressure-resistant housing, a return spring, and a wedge-shaped lock block; the upper part of the wedge-shaped lock block is a piston, and the lower part is a wedge-shaped block; the wedge-shaped lock block is installed on the pressure-resistant Inside the casing, linear motion can be done; the two ends of the return spring are respectively connected to the pressure-resistant casing and the wedge-shaped lock block; the section of the locking sleeve is a round section, and a The roller is rotatable around its own axis.

In the above solution, the first clamping end is further provided with a positioning hole, the orifice plate is provided with an orifice positioning hole, and the second clamping end is provided with a positioning pin.

In the above solution, the positioning point corresponds to the position of the positioning hole one by one; the length of the positioning point is slightly longer than that of the locking sleeve; the positioning point is a truncated cone with a small cone angle.

In the above solution, the first clamping end is provided with several pretensioning devices, and the pretensioning device is an integral component, including a rotating handle, a fixed rod, and a fan-shaped locking surface; the slope of the fan-shaped locking surface is from The rotation direction of the pretensioning device increases gradually.

The beneficial effects of the present invention are: (1) Utilize the liquid pressure in the pipeline to drive the wedge-shaped locking block to move linearly to the inner side of the pipeline, contact with the roller of the locking sleeve, and then the second clamping end will move toward the first clamping end. Close to achieve locking, and the greater the pressure in the pipeline, the greater the locking force. This method can realize automatic locking, and the locking force increases with the increase of the pressure in the pipe to ensure safety. (2) There is a return spring above the wedge-shaped lock block. When the liquid in the tube is emptied and the pressure in the tube disappears, the wedge-shaped lock block returns to its original position under the action of the spring, and the lock is released. The second clamping end can be removed directly, saving Time-saving and labor-saving, very convenient. The third innovation is that positioning holes are provided on the device, which greatly shortens the time required for positioning. (3) It is convenient to lock, and the locking force increases with the increase of the pressure in the pipe, which is safe and reliable; (4) It is convenient to disassemble, saving time and effort; (5) The positioning is accurate and less time-consuming.

Description of drawings

Fig. 1 is an overall structural diagram of the fast detachable orifice plate fixing device of the present invention.

Fig. 2 is a schematic structural diagram of a wedge locking device.

Figure 3 is a schematic diagram of the pretensioning device.

Figure 4 is a schematic diagram of the locking sleeve.

Fig. 5 is a schematic diagram of the orifice plate structure.

In the figure, 1-high pressure pipeline; 2-wedge locking device; 21-pressure-resistant shell; 22-return spring; 23-wedge lock block; 3-first clamping end; 4-hole plate; 41-hole Plate positioning hole; 42-hole plate fixing hole; 43-cavitation hole; 5-second clamping end; 6-locating pin; 7-locking sleeve; 71-roller; 8-positioning hole; 9-preload Device; 91-fixing rod; 92-rotating handle; 93-sector locking surface.

Detailed ways

The examples of the fast detachable orifice plate fixing device of the present invention will be further described below with reference to FIGS. 1 to 5 .

As shown in the figure, a fast detachable orifice plate fixing device includes a first clamping end 3 and a second clamping end 5, and an orifice 4 is installed on the first clamping end 3 and the second clamping end. Between the tight ends 5, the orifice plate 4 is provided with an orifice plate fixing hole 42, and the first clamping end 3 is provided with a high-pressure pipeline 1 and a plurality of wedge lock devices 2, each of the wedge locks The tightening devices 2 are evenly distributed on the outer peripheral surface of the first clamping end 3; each of the wedge locking devices 2 is connected to the inside of the pipeline of the first clamping end 3 through the high-pressure pipeline 1, and the first clamping The end 3 is also provided with several pretensioning devices 9, which are an integral component, including a rotary handle 92, a fixed rod 91, and a fan-shaped locking surface 93; the slope of the fan-shaped locking surface 93 is from the The direction of rotation of the pretensioner 9 gradually increases. The second clamping end 5 is provided with several locking sleeves 7, the number of the locking sleeves 7 and the orifice plate fixing holes 42 is the same as that of the wedge locking device 2, each of the locking The sleeves 7 are evenly distributed on the outer peripheral surface of the second clamping end 5 , and the position of each locking sleeve 7 corresponds to each wedge locking device 2 . The wedge locking device 2 includes a pressure-resistant housing 21, a return spring 22, and a wedge lock block 23; the upper part of the wedge lock block 23 is a piston, and the lower part is a wedge block; the wedge lock block 23 is installed on the Inside the pressure-resistant housing 21, linear motion can be done; the two ends of the return spring 22 are respectively connected to the pressure-resistant housing 21 and the wedge-shaped lock block 23; the cross-section of the locking sleeve 7 is a circular cross-section, A roller 71 is fixed inside the locking sleeve 7, and the roller 71 can rotate around its own axis. After the locking sleeve 7 passes through the orifice plate fixing hole 42, the orifice plate 4 is fixed on the first clamping end 3 and the second clamping end by cooperating with the wedge locking device 2. Between tight ends 5. Preferably, the first clamping end 3 is further provided with a positioning hole 8 , the orifice plate 4 is provided with an orifice positioning hole 41 , and the second clamping end 5 is provided with a positioning pin 6 . The position of the positioning pin 6 corresponds to the position of the positioning hole 8 one by one; the length of the positioning pin 6 is slightly longer than that of the locking sleeve 7; the positioning pin 6 is a truncated cone with a small cone angle. The taper of positioning pin 6 is 1:12～16, and the length of positioning pin 6 is 8～13mm longer than locking sleeve 7. The taper of locking sleeve 7 is 1:10-14, and its tensile strength should generally exceed 450MPa. The inclination of the wedge-shaped block part of the wedge-shaped locking block 23 is 20-30 degrees, and its yield strength should generally exceed 400 MPa.

By adopting the above technical scheme, when the orifice plate needs to be fixed, the orifice plate 4 is first installed on the second clamping end 5 according to the orifice plate positioning hole 41, and then the position of the positioning hole 8 on the first clamping end 3 is moved by the second clamping end. Two clamping ends 5 , until the positioning pin 6 on the second clamping end 5 is aligned with the positioning hole 8 , and then move along the axial direction of the positioning pin 6 to clamp the orifice plate 4 . Then hold the rotating handle 92 of the pretensioning device 9 by hand to rotate it around the axis of the fixing rod 91 , and then the fan-shaped locking surface 93 will gradually lock the second clamping end 5 . When a certain pressure of liquid is passed into the pipeline, the liquid will enter the pressure-resistant housing 21 of the wedge lock device 2 through the high-pressure pipeline 1. After the liquid pressure is greater than the elastic force of the return spring 22, the wedge lock block 23 moves toward the inside of the pipeline. Linear movement, the wedge-shaped surface of the wedge-shaped locking block 23 contacts the roller 71 of the locking sleeve 7, and applies force to the locking sleeve to move toward the first clamping end 3, thereby realizing the fixing of the orifice plate.

By adopting the above technical scheme, when the orifice plate needs to be disassembled, the liquid in the pipeline is emptied, the pressure in the high-pressure pipeline 1 is removed, and the wedge-shaped locking block 23 returns to its original position under the elastic force of the return spring 22, and is separated from the locking sleeve 7 , the locking force of the wedge locking device 2 is cancelled. Then the pre-tightening device 9 is reversely rotated, the fan-shaped locking surface 93 is separated from the second clamping end 5, and the locking force of the pre-tightening device 9 is cancelled. At this time, all the locking force is cancelled, the second clamping end can be directly removed, and the orifice plate can be removed to realize the disassembly of the orifice plate.

Claims (4)

1. A fast detachable orifice plate fixing device, characterized in that it includes a first clamping end (3) and a second clamping end (5), and the orifice plate (4) is installed on the first clamping end (3) and the second clamping end (5), the orifice plate (4) is provided with an orifice plate fixing hole (42), and the first clamping end (3) is provided with a high-pressure tube Road (1) and wedge locking device (2), the wedge locking device (2) is connected with the pipe interior of the first clamping end (3) through the high pressure pipeline (1), and the second clamping A locking sleeve (7) is provided on the tight end (5), and the locking sleeve (7) is realized by cooperating with the wedge locking device (2) after passing through the fixing hole (42) of the orifice plate. The orifice (4) is fixed between the first clamping end (3) and the second clamping end (5); there are several wedge locking devices (2), each of which The wedge locking devices (2) are evenly distributed on the outer peripheral surface of the first clamping end (3); 2) are the same, each of the locking sleeves (7) is evenly distributed on the outer peripheral surface of the second clamping end (5), and each of the locking sleeves (7) is connected with each of the wedge locking devices ( The positions of 2) correspond to each other; the wedge locking device (2) includes a pressure-resistant housing (21), a return spring (22), and a wedge lock block (23); the upper part of the wedge lock block (23) It is a piston, and the lower part is a wedge-shaped block; the wedge-shaped lock block (23) is installed in the pressure-resistant housing (21) and can do linear motion; the two ends of the return spring (22) are respectively connected to the pressure-resistant The housing (21) and the wedge-shaped locking block (23); the section of the locking sleeve (7) is a circular section, and a roller (71) is fixed inside the locking sleeve (7). The roller (71) can rotate around its own axis. 2. A fast detachable orifice plate fixing device according to claim 1, characterized in that, the first clamping end (3) is also provided with a positioning hole (8), and the orifice plate (4 ) is provided with orifice positioning holes (41), and the second clamping end (5) is provided with positioning pins (6). 3. A quick-detachable orifice plate fixing device according to claim 2, characterized in that, the positions of the positioning pins (6) correspond to the positions of the positioning holes (8) one by one; the positioning pins ( 6) is slightly longer than the locking sleeve (7); the positioning pin (6) is a truncated cone with a small cone angle. 4. A quick-detachable orifice plate fixing device according to claim 1, characterized in that, the first clamping end (3) is provided with several pre-tightening devices (9), and the pre-tightening devices ( 9) It is an integral component, including a rotary handle (92), a fixed rod (91), and a fan-shaped locking surface (93); the slope of the fan-shaped locking surface (93) rotates from the pre-tensioning device (9) direction gradually increases.