A pressure-resistant testing device for valve production

Abstract

The present invention relates to a pressure-resistant testing device for valve production applied to the field of valve production, comprising a frame, a sealing seat is arranged on the inner top side of the frame, a lifting drive device is installed on the top of the frame, a protective cover is installed on the lower end of the sealing seat, the protective cover comprises a first cover body and a second cover body, and a compression spring 2 is installed between the second cover body and the sealing seat, a water storage chamber is arranged on the inner side of the bottom of the frame, a water guide hole connected with the water storage chamber is arranged in the middle part of the inner bottom end of the frame, a high-pressure pump is installed on the inner side of the water storage chamber, and by installing the protective cover on the lower end of the sealing seat, during the pressure-resistant testing, the frame itself can be used in conjunction with the sealing seat and the protective cover to fully shield the valve, so as to avoid the safety problem caused by splashing of accessories or water flow due to damage caused by excessive pressure, and by providing the protective cover including the first cover body and the second cover body in conjunction with the compression spring 2, the protection requirements in the testing process of valves of different sizes can be met.

Description

Technical Field

[0001] The invention relates to a pressure resistance detection device, in particular to a pressure resistance detection device for valve production applied in the field of valve production. Background Art

[0002] Valves are widely used, and the requirements for valves in production are relatively strict. Before the finished product is shipped, the valves need to be tested using testing equipment, including pressure resistance and sealing.

[0003] For example, the specification of patent publication number CN117268936A discloses a pressure-resistant testing device for valve production, which includes a workbench, a clamping mechanism fixedly installed on the upper end of the workbench, an air pump box fixedly installed on the upper end of the workbench is arranged in front of the clamping mechanism, a supporting mechanism is arranged in the middle of the upper end of the workbench, and a testing mechanism is arranged on the lower side of the supporting mechanism. The clamping mechanism is used in conjunction with the testing mechanism to simultaneously test the pressure resistance and sealing of the valve, and there is no need to repeatedly debug the device, making the device more convenient to use.

[0004] Based on the above search and combined with the prior art, it is found that the existing pressure resistance testing equipment for valve production has the problem of accessories splashing or water splashing due to damage caused by excessive pressure during the test process, which makes the testing process have certain safety hazards. Therefore, a pressure resistance testing equipment for valve production is proposed to improve the above problem. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that during the testing process, the existing pressure-resistant testing equipment for valve production may be damaged due to excessive pressure, resulting in splashing of accessories or water, which poses certain safety hazards during the testing process.

[0006] In order to solve the above problems, the present invention provides a pressure-resistant testing device for valve production, comprising a frame:

[0007] A sealing seat is arranged on the inner top side of the frame, a lifting driving device for driving the sealing seat to move up and down is installed on the top of the frame, a protective cover is installed on the lower end of the sealing seat, and the protective cover includes a first cover body and a second cover body, the first cover body is fixed to the bottom end of the sealing seat, the second cover body is slidably sleeved on the outer side of the first cover body, and a compression spring 2 is installed between the second cover body and the sealing seat;

[0008] A water storage cavity is arranged inside the bottom of the frame, a water guide hole connected with the water storage cavity is arranged in the middle of the inner bottom end of the frame, a high-pressure pump is installed inside the water storage cavity, and the output end of the high-pressure pump is adapted to the water guide hole.

[0009] In the above-mentioned pressure resistance testing equipment for valve production, by installing a protective cover at the lower end of the sealing seat, during the pressure resistance testing, the frame itself can be used in conjunction with the sealing seat and the protective cover to fully cover the valve, avoiding safety problems caused by splashing of accessories or water due to damage caused by excessive pressure, and by providing a protective cover including a first cover body and a second cover body in conjunction with a compression spring 2, it can adapt to the protection needs during the testing of valves of different sizes.

[0010] As a further supplement to the present application, the upper end of the second cover body is arranged to face inward and slides in contact with the outer wall of the first cover body. A gap is left between the inner wall of the second cover body and the first cover body. Multiple buffer plates are installed on the inner walls of the first cover body and the second cover body through compression spring three; when accessories are splashed or water splashes due to damage caused by excessive pressure during the pressure resistance test, the splashing accessories or water will directly hit the buffer plate. With the cooperation of the buffer plate and the compression spring three, the impact force can be effectively reduced, thereby better protecting the first cover body and the second cover body.

[0011] As a further supplement to the present application, the horizontal plane where the lower end of the second cover body is located is lower than the horizontal plane where the lower end of the buffer plate is located, and the inner bottom end of the frame is provided with an annular positioning groove compatible with the second cover body; when the sealing seat moves downward with the second cover body, the bottom of the second cover body is inserted into the annular positioning groove, and the annular positioning groove can effectively position the second cover body. When accessories are splashed or water is splashed due to excessive pressure during the pressure resistance test, the splashing accessories or water are not easy to cause deformation of the second cover body.

[0012] As a further supplement to the present application, a protective baffle is provided on the inner side of the annular positioning groove, and a compression spring is fixed between the protective baffle and the inner bottom end of the annular positioning groove. When the protective baffle is not subjected to external force, the horizontal plane where the upper end is located is flush with the horizontal plane where the inner bottom end of the frame is located, thereby preventing external debris from entering the annular positioning groove and affecting the positioning effect of the annular positioning groove on the second cover body.

[0013] As a further supplement to the present application, a water ring is fixed to the inner bottom end of the frame, and the water ring is sleeved on the outside of the protective cover. The inner bottom end of the frame is provided with a drain hole connected to the water storage chamber, and the drain hole is located within the range surrounded by the water ring. After the pressure resistance test is completed, when the valve is taken out, the water in the valve will all fall back from the drain hole to the water storage chamber under the action of the water ring for circulation.

[0014] As a further supplement to the present application, an auxiliary support column is vertically installed on the inner side of the water storage cavity, and the auxiliary support column can compensate for the strength loss of the frame caused by the setting of the water storage cavity, so that the bottom end plane inside the frame is not easily deformed.

[0015] As a further supplement to the present application, an upwardly arranged L-shaped support rod is installed on the outer wall of the side top end of the second cover body, a first magnetic block is installed on the top end of the L-shaped support rod, and a second magnetic block is installed on the inner top end of the frame, and the first magnetic block and the second magnetic block attract each other; after the lifting drive device drives the sealing seat to move up and reset with the protective cover, the second cover body continues to move up under the action of the attraction between the first magnetic block and the second magnetic block until the first magnetic block and the second magnetic block are attracted to each other, while shortening the overall moving path of the protective cover, the distance between the second cover body and the inner bottom end of the frame is increased, thereby facilitating the removal and placement of larger valves.

[0016] As a further supplement to the present application, a damping member is installed between the sealing seat and the second cover body to avoid impact caused by excessively fast movement of the second cover body.

[0017] As a further supplement to the present application, the damping member includes a sleeve, a slide rod and a piston block;

[0018] The sleeve is vertically installed on the side end of the second cover body, the sliding rod is vertically installed on the lower end of the sealing seat, the lower end of the sliding rod slides and extends to the inner side of the sleeve and is fixed to the piston block, the piston block is provided with a damping hole in the vertical direction, and the inner side of the sleeve is filled with liquid medium; after the lifting drive device drives the sealing seat to move up and reset with the protective cover, the second cover body continues to move up under the action of the attraction between the first magnetic block and the second magnetic block until the first magnetic block and the second magnetic block are attracted to each other. During this process, the sliding rod cooperates with the piston block to slide relative to the sleeve, and the liquid medium of the sleeve is used to pass through the damping hole to reduce the speed of the attraction between the first magnetic block and the second magnetic block, thereby preventing the second cover body from moving too fast.

[0019] In summary, by installing a protective cover at the lower end of the sealing seat, during the pressure test, the frame itself can be used in conjunction with the sealing seat and the protective cover to fully cover the valve, thereby avoiding safety problems caused by splashing of accessories or water due to damage caused by excessive pressure, and by providing a protective cover including a first cover body and a second cover body in conjunction with a compression spring 2, it can adapt to the protection needs of valves of different sizes during testing; when the sealing seat moves downward with the second cover body, the bottom of the second cover body is inserted into the annular positioning groove, and the annular positioning groove can effectively position the second cover body. During the pressure test, when accessories are splashed or water is splashed due to excessive pressure, the splashing accessories or water are not likely to cause deformation of the second cover body; during the pressure test, when accessories are splashed or water is splashed due to excessive pressure, the splashing accessories or water are not likely to cause deformation of the second cover body. The flow will directly hit the buffer plate. Under the cooperation of the buffer plate and the compression spring three, the impact force can be effectively reduced, thereby better protecting the first cover body and the second cover body; in addition, after the lifting drive device drives the sealing seat to move up and reset with the protective cover, the second cover body continues to move up under the attraction of the first magnetic block and the second magnetic block until the first magnetic block and the second magnetic block are attracted to each other, while shortening the overall moving path of the protective cover, the distance between the second cover body and the bottom end of the frame is increased, thereby facilitating the placement of larger valves; and in the process of the first magnetic block and the second magnetic block being attracted or separated, the sliding rod cooperates with the piston block to slide relative to the sleeve, and the liquid medium of the sleeve is used to reduce the speed of attraction and separation of the first magnetic block and the second magnetic block through the damping hole, thereby preventing the second cover body from moving too fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the first embodiment of the present application;

[0021] Figure 2 This is a schematic diagram of the overall planar structure of the first implementation mode of the present application;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the protective cover in the first embodiment of the present application in the stored state;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the protective cover in the first embodiment of the present application when it is fully opened;

[0024] Figure 5 This is a schematic diagram of the planar structure of the protective cover in the fully opened state according to the first embodiment of the present application;

[0025] Figure 6 This is a schematic cross-sectional structure diagram of the damping member of the first embodiment of the present application;

[0026] Figure 7This is a schematic diagram of the planar structure of the damping member in the upwardly moved state of the second cover body according to the first embodiment of the present application;

[0027] Figure 8 This is a schematic diagram of the planar structure of the damping member when the second cover body is in a downwardly moved state according to the first embodiment of the present application.

[0028] Description of the numbers in the figure:

[0029] 1. Frame; 101. Water storage chamber; 102. Water guide hole; 2. Sealing seat; 3. Lifting drive device; 4. Protective cover; 41. First cover body; 42. Second cover body; 43. Buffer plate; 44. Compression spring three; 5. High-pressure pump; 6. Auxiliary support column; 7. Water surrounding ring; 8. Drain hole; 9. Protective baffle; 10. Annular positioning groove; 11. Compression spring one; 12. Compression spring two; 13. L-shaped support rod; 14. First magnetic block; 15. Second magnetic block; 16. Damping element; 161. Sleeve; 162. Sliding rod; 163. Piston block; 1631. Damping hole. DETAILED DESCRIPTION

[0030] An implementation method of the present application is described in detail below with reference to the accompanying drawings.

[0031] The first implementation method:

[0032] The present invention provides a pressure-resistant testing device for valve production, please refer to Figure 1-8 , including a frame 1, a sealing seat 2 is arranged on the inner top side of the frame 1, a lifting driving device 3 for driving the sealing seat 2 to move up and down is installed on the top of the frame 1, a protective cover 4 is installed at the lower end of the sealing seat 2, the protective cover 4 includes a first cover body 41 and a second cover body 42, the first cover body 41 is fixed to the bottom end of the sealing seat 2, the second cover body 42 is slidably connected to the outer side of the first cover body 41, and a compression spring 12 is installed between the second cover body 42 and the sealing seat 2.

[0033] The pressure-resistant testing equipment for valve production installs a protective cover 4 at the lower end of the sealing seat 2. During the pressure test, the frame 1 itself can be used in conjunction with the sealing seat 2 and the protective cover 4 to fully cover the valve to avoid safety problems caused by splashing of accessories or water due to damage caused by excessive pressure. In addition, by providing a protective cover 4 including a first cover body 41 and a second cover body 42 in conjunction with a compression spring 12, it can meet the protection needs during the detection of valves of different sizes.

[0034] Among them, an upwardly arranged L-shaped support rod 13 is installed on the outer wall of the side top end of the second cover body 42, a first magnetic block 14 is installed on the top end of the L-shaped support rod 13, and a second magnetic block 15 is installed on the inner top end of the frame 1, and the first magnetic block 14 and the second magnetic block 15 attract each other.

[0035] Based on the above-mentioned coordination setting of the first magnetic block 14 and the second magnetic block 15, after the lifting drive device 3 drives the sealing seat 2 to move up and reset with the protective cover 4, the second cover body 42 continues to move up under the action of the attraction between the first magnetic block 14 and the second magnetic block 15 until the first magnetic block 14 and the second magnetic block 15 are attracted to each other, while shortening the overall moving path of the protective cover 4, increasing the distance between the second cover body 42 and the bottom end of the frame 1, thereby facilitating the removal and placement of larger valves.

[0036] A damping member 16 is installed between the sealing seat 2 and the second cover body 42 to avoid the impact caused by the second cover body 42 moving too fast. Regarding the damping member 16, specifically, Figure 6 As shown, the damping member 16 includes a sleeve 161, a slide rod 162 and a piston block 163. The sleeve 161 is vertically installed on the side end of the second cover body 42, and the slide rod 162 is vertically installed on the lower end of the sealing seat 2. The lower end of the slide rod 162 slides and extends to the inner side of the sleeve 161 and is fixed to the piston block 163. A damping hole 1631 is provided on the piston block 163 in the vertical direction, and the inner side of the sleeve 161 is filled with a liquid medium.

[0037] By installing a damping member 16 including a sleeve 161, a slide rod 162 and a piston block 163 between the sealing seat 2 and the second cover body 42, after the lifting drive device 3 drives the sealing seat 2 to move up and reset with the protective cover 4, the second cover body 42 continues to move up under the attraction of the first magnetic block 14 and the second magnetic block 15 until the first magnetic block 14 and the second magnetic block 15 are attracted to each other. Figure 7 As shown, during this process, the slide rod 162 cooperates with the piston block 163 to slide relative to the sleeve 161, and the liquid medium of the sleeve 161 is used to reduce the speed of the first magnetic block 14 and the second magnetic block 15 to attract each other through the damping hole 1631, thereby preventing the second cover body 42 from moving too fast; similarly, Figure 8 It is shown that when the lifting drive device 3 drives the sealing seat 2 to move downward with the protective cover 4, the first magnetic block 14 and the second magnetic block 15 gradually move away from each other, and under the elastic force of the compression spring 12, the second cover body 42 moves downward rapidly relative to the sealing seat 2. During this process, the slide rod 162 cooperates with the piston block 163 to slide relative to the sleeve 161, and the liquid medium of the sleeve 161 is used to reduce the downward movement speed of the second cover body 42 through the damping hole 1631.

[0038] A water storage chamber 101 is provided on the inner side of the bottom of the frame 1, and a water guide hole 102 connected to the water storage chamber 101 is provided in the middle of the inner bottom end of the frame 1. A high-pressure pump 5 is installed on the inner side of the water storage chamber 101, and the output end of the high-pressure pump 5 is adapted to the water guide hole 102. After the valve to be tested is placed on the inner bottom end surface of the frame 1, the lifting drive device 3 is used to drive the sealing seat 2 to move down to the press-fit valve, so that the two ends of the valve are respectively sealed by the sealing seat 2 and the inner bottom end surface of the frame 1. At this time, the high-pressure pump 5 is used to pump water into the inside of the valve through the water guide hole 102, so that a high-pressure state is formed inside the valve, and the high-pressure value is adjusted by an external control device to perform a pressure resistance test on the valve.

[0039] A water ring 7 is fixed to the inner bottom end of the frame 1, and the water ring 7 is sleeved on the outside of the protective cover 4. A water drop hole 8 connected to the water storage chamber 101 is provided at the inner bottom end of the frame 1, and the water drop hole 8 is located within the range surrounded by the water ring 7.

[0040] Based on the coordinated arrangement of the above structure, after the pressure resistance test is completed, when the valve is taken out, the water in the valve will all fall back from the water drop hole 8 to the water storage chamber 101 under the action of the water surrounding ring 7 for circulation.

[0041] In addition, an auxiliary support column 6 is vertically installed inside the water storage chamber 101, and the auxiliary support column 6 can compensate for the strength loss of the frame 1 caused by the water storage chamber 101, so that the bottom end plane inside the frame 1 is not easily deformed.

[0042] Among them, the upper end of the second cover body 42 is set toward the inside and slides together with the outer wall of the first cover body 41. A gap is left between the inner wall of the second cover body 42 and the first cover body 41. Multiple buffer plates 43 are installed on the inner walls of the first cover body 41 and the second cover body 42 through compression springs 44.

[0043] Through the coordinated setting of the above compression spring three 44 and the buffer plate 43, when accessories or water splashes due to damage caused by excessive pressure during the pressure resistance test, the splashing accessories or water will directly hit the buffer plate 43. Under the coordinated action of the buffer plate 43 and the compression spring three 44, the impact force can be effectively reduced, thereby better protecting the first cover body 41 and the second cover body 42.

[0044] The horizontal plane where the lower end of the second cover body 42 is located is lower than the horizontal plane where the lower end of the buffer plate 43 is located, and the inner bottom end of the frame 1 is provided with an annular positioning groove 10 adapted to the second cover body 42 .

[0045] By setting the annular positioning groove 10, when the sealing seat 2 moves downward with the second cover body 42, the bottom of the second cover body 42 is inserted into the annular positioning groove 10, and the annular positioning groove 10 can effectively position the second cover body 42. When accessories are splashed or water splashes due to excessive pressure during the pressure resistance test, the splashing accessories or water will not easily cause the second cover body 42 to deform.

[0046] Furthermore, a protective baffle 9 is provided on the inner side of the annular positioning groove 10, and a compression spring 11 is fixed between the protective baffle 9 and the inner bottom end of the annular positioning groove 10, and when the protective baffle 9 is not subjected to external force, the horizontal plane where the upper end is located is flush with the horizontal plane where the inner bottom end of the frame 1 is located, which can prevent external debris from entering the annular positioning groove 10 and affecting the positioning effect of the annular positioning groove 10 on the second cover body 42.

[0047] Working principle: After placing the valve to be tested on the inner bottom end surface of the frame 1, the lifting drive device 3 is used to drive the sealing seat 2 to move down to the compression valve, so that the two ends of the valve are sealed by the sealing seat 2 and the inner bottom end surface of the frame 1 respectively, and at the same time, the frame 1 itself is used to cooperate with the sealing seat 2 and the protective cover 4 to fully cover the valve to avoid safety problems caused by splashing of accessories or water due to damage caused by excessive pressure during the pressure resistance test. When the sealing seat 2 moves downward with the second cover body 42, the bottom of the second cover body 42 is inserted into the annular positioning groove 10, and the annular positioning groove 10 can effectively position the second cover body 42. When the accessories are splashed or the water is splashed due to damage caused by excessive pressure during the pressure resistance test, the splashing accessories or water are not easy to cause the second cover body 42 to deform; then the high-pressure pump 5 is used to pump water into the inside of the valve through the water guide hole 102, so that a high-pressure state is formed inside the valve, and the high-pressure value is adjusted by an external control device to perform a pressure resistance test on the valve;

[0048] When the accessories or water splashes due to damage caused by excessive pressure during the pressure test, the splashed accessories or water will directly hit the buffer plate 43. Under the cooperation of the buffer plate 43 and the compression spring 44, the impact force can be effectively reduced, thereby better protecting the first cover body 41 and the second cover body 42; when the valve is taken out after the pressure test is completed, the water in the valve will all fall back from the water drop hole 8 to the water storage chamber 101 under the action of the water ring 7 for recycling;

[0049] After the pressure resistance test is completed, the lifting drive device 3 drives the sealing seat 2 to move up and reset with the protective cover 4, and the second cover body 42 continues to move up to the first magnetic block 14 and the second magnetic block 15 under the attraction of the first magnetic block 14 and the second magnetic block 15, while shortening the overall moving path of the protective cover 4. At the same time, the distance between the second cover body 42 and the bottom end of the frame 1 is increased, thereby facilitating the placement of larger valves; and after the lifting drive device 3 drives the sealing seat 2 to move up and reset with the protective cover 4, the second cover body 42 continues to move up to the first magnetic block 14 and the second magnetic block 15 under the attraction of the first magnetic block 14 and the second magnetic block 15. During this process, the slide rod 162 cooperates with the piston block 163 to slide relative to the sleeve 161, and the liquid medium of the sleeve 161 is used to reduce the speed of the attraction of the first magnetic block 14 and the second magnetic block 15 through the damping hole 1631, thereby preventing the second cover body 42 from moving too fast.

[0050] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A pressure-resistant testing device for valve production, comprising a frame (1), characterized in that: A sealing seat (2) is arranged on the inner top side of the frame (1); a lifting drive device (3) for driving the sealing seat (2) to move up and down is installed on the top of the frame (1); a protective cover (4) is installed at the lower end of the sealing seat (2); the protective cover (4) comprises a first cover body (41) and a second cover body (42); the first cover body (41) is fixed to the bottom end of the sealing seat (2); the second cover body (42) is slidably sleeved on the outer side of the first cover body (41); and a second compression spring (12) is installed between the second cover body (42) and the sealing seat (2); A water storage chamber (101) is provided on the inner side of the bottom of the frame (1); a water guide hole (102) connected to the water storage chamber (101) is provided in the middle of the inner bottom end of the frame (1); a high-pressure pump (5) is installed on the inner side of the water storage chamber (101); an output end of the high-pressure pump (5) is matched with the water guide hole (102); The upper end of the second cover body (42) is arranged to face inwards and is slidably fitted with the outer wall of the first cover body (41); a gap is left between the inner wall of the second cover body (42) and the first cover body (41); and a plurality of buffer plates (43) are installed on the inner walls of the first cover body (41) and the second cover body (42) via compression spring three (44); An upwardly disposed L-shaped support rod (13) is mounted on the outer wall of the side top end of the second cover body (42); a first magnetic block (14) is mounted on the top end of the L-shaped support rod (13); a second magnetic block (15) is mounted on the inner top end of the frame (1); the first magnetic block (14) and the second magnetic block (15) are attracted to each other; A damping member (16) is installed between the sealing seat (2) and the second cover body (42); The damping member (16) comprises a sleeve (161), a sliding rod (162) and a piston block (163); The sleeve (161) is vertically mounted on the side end of the second cover body (42), and the slide rod (162) is vertically mounted on the lower end of the sealing seat (2). The lower end of the slide rod (162) slides and extends to the inner side of the sleeve (161) and is fixed to the piston block (163). The piston block (163) is provided with a damping hole (1631) in the vertical direction. The inner side of the sleeve (161) is filled with a liquid medium.

2. The pressure-resistant testing equipment for valve production according to claim 1 is characterized in that: The horizontal plane where the lower end of the second cover body (42) is located is lower than the horizontal plane where the lower end of the buffer plate (43) is located, and the inner bottom end of the frame (1) is provided with an annular positioning groove (10) adapted to the second cover body (42).

3. The pressure-resistant testing equipment for valve production according to claim 2 is characterized in that: A protective baffle (9) is arranged on the inner side of the annular positioning groove (10), a compression spring (11) is fixed between the protective baffle (9) and the inner bottom end of the annular positioning groove (10), and when the protective baffle (9) is not subjected to external force, the horizontal plane where the upper end is located is flush with the horizontal plane where the inner bottom end of the frame (1) is located.

4. The pressure-resistant testing equipment for valve production according to claim 1 is characterized in that: A water ring (7) is fixed to the inner bottom end of the frame (1), and the water ring (7) is sleeved on the outer side of the protective cover (4). A water drop hole (8) connected to the water storage chamber (101) is provided at the inner bottom end of the frame (1), and the water drop hole (8) is located within the range surrounded by the water ring (7).

5. The pressure-resistant testing equipment for valve production according to claim 1 is characterized in that: An auxiliary support column (6) is vertically mounted inside the water storage chamber (101).

Images