A safety valve automatic assembly test pressure adjustment device

Abstract

The present invention relates to the technical field of safety valves, and discloses an automatic assembly pressure test adjustment device for safety valves, comprising a cabinet, a conveying mechanism is arranged near the top of the front of the cabinet, an assembly mechanism is arranged on the left side of the top of the cabinet, and a pressure test adjustment mechanism is arranged on the right side of the bottom of the cabinet. The device can effectively improve the assembly efficiency of the safety valve through the mutual cooperation of the assembly mechanism and the pressure test adjustment mechanism, which can not only reduce the manual operation time, but also improve the assembly accuracy of the safety valve. In addition to opening the equipment for pressure test during the pressure test, the pressure test, adjustment and re-pressure test of the safety valve are all automatically completed, further improving the assembly efficiency of the safety valve. Through higher-precision adjustment, the accuracy and consistency of the set pressure of the safety valve can be further improved, thereby further ensuring the production quality level of the safety valve. Two sets of touch screens can more conveniently and intuitively observe the assembly and pressure test adjustment parameters and the safety valve performance test data.

Description

Technical Field

[0001] The invention relates to the technical field of safety valves, in particular to an automatic assembly test pressure adjustment device for safety valves. Background Art

[0002] Safety valve is a product commonly used to protect pressure vessels. When the pressure is prone to abnormal high pressure state inside, the safety valve will open in time to release the pressure to prevent the pressure inside the pressure vessel from continuing to rise, thereby achieving the purpose of protecting the pressure vessel. In the field of tank containers and tank trucks, the safety valve is a protective device for tank containers and tank trucks, and its stable working performance is particularly important. When the existing safety valve is produced and assembled, it is necessary to manually place the valve cover, spring, valve disc and valve body on the assembly platform in sequence, and then operate the cylinder output of the assembly platform to press down the valve disc, thereby compressing the spring to a certain position, and then manually rotate the valve body to make the valve cover and valve body threads match, and finally operate the cylinder to retract and loosen the valve disc. Under the action of the spring, the valve disc and its sealing ring will be driven to squeeze the internal sealing surface of the valve body to complete the assembly. After the safety valve is assembled, it needs to be installed on the safety valve testing machine for pressure testing to measure whether the set pressure of the safety valve meets the production performance requirements. If the set pressure does not meet the required pressure tolerance range, the safety valve needs to be removed from the pressure testing machine, and then the safety valve needs to be installed on the assembly platform again. Based on experience, the valve body and valve cover are rotated relative to each other, and then placed on the pressure testing machine for pressure testing. Repeat this process many times until the set pressure of the safety valve meets the production performance requirements, and then the safety valve is subjected to pressure holding test and return seat pressure test.

[0003] During the production process, the assembly and pressure testing of safety valves is inefficient, and there are technical defects such as differences in safety valve performance. There are processing differences in various parts of safety valves, such as differences in spring force values, differences in valve body sealing surface processing, etc., which will lead to differences in the screw-in lengths of the valve body and valve cover during the assembly of the safety valve, resulting in the lack of specific standards in the production process, making it difficult to unify the performance of the safety valve. This will not only cause repeated rework during the production process, affecting production efficiency, but will also lead to pressure tolerance problems in the production process of safety valves, that is, the set pressure is likely to be close to the upper and lower limits of the tolerance, resulting in a large difference in the finishing pressure of a batch of safety valves. Summary of the invention

[0004] The object of the present invention is to provide a safety valve automatic assembly test pressure adjustment device to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a safety valve automatic assembly test pressure adjustment device, comprising a cabinet, a conveying mechanism is arranged near the top of the cabinet front, an assembly mechanism is arranged on the left side of the cabinet top, and a test pressure adjustment mechanism is arranged on the right side of the cabinet bottom;

[0006] The transport mechanism includes a moving assembly and a sliding assembly, wherein the moving assembly is arranged on the front side of the cabinet near the top, and the sliding assembly is arranged inside the moving assembly;

[0007] The moving assembly comprises a first box body, the first box body is fixedly connected to the front side of the cabinet near the top, the right side of the inner wall of the first box body is rotatably connected with a screw rod, the left side of the first box body is fixedly connected to the first motor, the left and right sides of the inner wall of the first box body are symmetrically fixedly connected to limit rods, the surface of the screw rod is threadedly connected with a screw block, the top of the screw block is fixedly connected to a first sliding box, the first sliding box is slidably connected to the second sliding box up and down, the top of the second sliding box is fixedly connected to a fixed block, the front side of the fixed block is provided with a rotating shaft near the top, the rear end of the rotating shaft is fixedly connected with a fixed sleeve, the fixed sleeve is fixedly connected with a first cylinder, the output end of the first cylinder is fixedly connected with a clamping cylinder, the front side of the fixed block is fixedly connected to the second box body, the inner wall of the second box body is slidably connected to a slide plate up and down, the bottom of the slide plate is fixedly connected with four first springs, the top of the slide plate is fixedly connected with a slide plate, the top of the slide plate is fixedly connected with a limit block, and the surface of the rotating shaft is symmetrically provided with limit grooves corresponding to the limit blocks up and down;

[0008] The sliding assembly includes a guide rod, which is fixedly connected to the bottom of the inner wall of the first sliding box in a left-right symmetrical manner; a fixed plate is slidably connected to the guide rod surface up and down; a second spring is sleeved on the surface of the first guide rod between the bottom of the inner wall of the first sliding box and the fixed plate; a limit plate is fixedly connected to the top of the guide rod; a first fixed rod is fixedly connected to the front of the second sliding box near the top; a roller is rotatably connected to the front end of the first fixed rod; a gear is fixedly connected to the surface of the rotating shaft near the front end; an L frame is fixedly connected to the front of the first box body; a rack is fixedly connected to the top of the L frame; an L block is fixedly connected to the right side of the front of the first box body; and a descending groove is provided on the back of the L block.

[0009] According to the above technical solution, the output end of the first motor is fixedly connected to the left end of the screw rod, and holes are opened on the left side of the screw block near the bottom and symmetrically correspond to the limiting rod, and the screw block is slidably connected to the surface of the limiting rod through the hole. The two limiting rods limit the screw block so that the screw block can only move toward each other as the screw rod rotates.

[0010] According to the above technical solution, a hole matching the rotating shaft is opened on the front side of the fixed block, and the surface of the rotating shaft passes through and is rotatably connected in the hole, the top ends of the four first springs are fixedly connected to the bottom of the slide plate, and a groove matching the slider is opened on the top of the second box body, and the surface of the slider passes through and is slidably connected in the hole.

[0011] According to the above technical solution, the surface of the fixed plate is fixedly connected to the inner wall of the second sliding box, the bottom end of the second spring is fixedly connected to the bottom of the inner wall of the first sliding box, the top end of the second spring is fixedly connected to the bottom of the fixed plate, and the surface of the limiting plate is slidably connected to the inner wall of the second sliding box. When the top of the fixed plate is in contact with the bottom of the limiting plate, the clamping cylinder and the safety valve are in a horizontal position.

[0012] According to the above technical solution, the gear is meshed with the rack, and the roller is at the same level as the entrance of the descending trough.

[0013] According to the above technical solution, the assembly mechanism includes a first bracket, the first bracket is fixedly connected to the left side of the top of the cabinet, a first precision regulating valve is fixedly connected to the top of the left side of the first bracket, a second cylinder is fixedly connected to the top of the first bracket, a pressing sleeve is fixedly connected to the output end of the second cylinder, an assembly platform is fixedly connected to the top of the first bracket, a double-slider screw-type linear module is fixedly connected to the front of the first bracket, a second motor is fixedly connected to the left side of the double-slider screw-type linear module, a first reduction motor is symmetrically arranged on the front of the double-slider screw-type linear module, and a rubber gear is fixedly connected to the output end of the first reduction motor.

[0014] According to the above technical solution, the first precision regulating valve is connected to the second cylinder through an air pipe, and the first reduction motor is fixedly connected to the front side of the screw block inside the double-slider screw type linear module.

[0015] According to the above technical solution, the pressure test adjustment mechanism includes a second bracket and a cover, the second bracket is fixedly connected to the top of the cabinet, the bottom of the second bracket is fixedly connected to a pressure test base, the right side of the bottom of the cabinet is symmetrically fixedly connected to a third cylinder, the bottom of the second bracket is symmetrically fixedly connected to an articulated frame, the top of the articulated frame is hinged with a hinge, the hinge is hinged with a pressure rod inside, the right side of the back of the cabinet inner wall is fixedly connected to a second precision regulating valve, the back of the second bracket is fixedly connected to a slide rail slider module, the front of the slide rail slider module is fixedly connected to a lifting frame, the top of the second bracket is fixedly connected to a fourth cylinder near the back, and the second A fixed cylinder is fixedly connected to the top of the bracket near the front, a second reduction motor is fixedly connected to the top of the fixed cylinder, a spline shaft is fixedly connected to the output end of the second reduction motor, a first bearing is arranged on the top of the second bracket near the front, a second bearing is arranged on the top of the lifting frame, a rotating cylinder is fixedly connected to the inner ring of the second bearing, four second fixed rods are fixedly connected to the bottom of the lifting frame, an outer cylinder is fixedly connected to the bottom of the second fixed rod, an upper internal sliding sleeve is fixedly connected to the bottom of the rotating cylinder, a third spring is fixedly connected to the bottom of the upper internal sliding sleeve, a lower internal sliding sleeve is fixedly connected to the bottom of the third spring, and four ball modules are fixedly connected to the bottom of the outer cylinder.

[0016] According to the above technical solution, the bottom of the pressure test base is connected to the second precision regulating valve through an air pipe, the output end of the third cylinder is hinged to the end of the pressure rod away from the pressure test base, the output end of the fourth cylinder is fixedly connected to the top of the lifting frame, and the top of the second bracket is close to the front and the top of the lifting frame respectively provided with holes matching the first bearing outer ring and the second bearing outer ring, and the first bearing outer ring is fixedly connected to the hole provided at the top of the second bracket, and the second bearing outer ring is fixedly connected to the hole provided at the top of the lifting frame.

[0017] According to the above technical solution, a groove matching the surface of the spline shaft is provided on the inner wall of the rotating cylinder, and the surface of the spline shaft is slidably connected to the groove, and the spline shaft is limited so that the rotating cylinder rotates with the rotation of the spline shaft, and the surface of the rotating cylinder is slidably connected to the outer cylinder, and the lower internal sliding sleeve is slidably connected to the outer cylinder, and the interior of the sleeve cover fits the surface of the safety valve being pressure tested, and a hexagonal hole is provided at the bottom end of the lower sliding sleeve, and a hexagonal column corresponding to the hexagonal hole is fixedly connected to the top of the sleeve, and a background plate is fixedly connected between the first bracket and the second bracket, and a touch screen is symmetrically fixedly connected to the left and right sides of the front of the background plate.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0019] 1. The automatic assembly test pressure adjustment device for the safety valve starts the first motor through the provided moving component to move the screw block to the front of the assembly platform, then starts the clamping cylinder to increase the distance between the two clamping blocks of the clamping cylinder, then starts the first cylinder to move the clamping cylinder backward so that the assembled safety valve is located between the two clamping blocks of the clamping cylinder, then starts the clamping cylinder to clamp and fix the safety valve, then starts the first cylinder again to drive the clamping cylinder to move the safety valve backward. This process does not require manual removal of the safety valve on the assembly platform, and can prevent the worker from accidentally touching the operating button, which may cause the second cylinder to drive the pressing sleeve to move downward and press the worker's hand, thereby providing safety protection for the worker.

[0020] 2. The safety valve automatic assembly test pressure adjustment device uses a sliding component to set up. After the clamping cylinder clamps and fixes the safety valve, the first motor is started to move the screw block to the right, thereby driving the clamping cylinder and the safety valve clamped by it to move to the right. During the movement to the right, the gear and the rack will engage, so that the shaft will rotate and roll. During the rotation of the shaft, the shaft will squeeze the limit block to move the limit block downward. After the shaft rotates 180 degrees, the gear will not engage with the rack. At the same time, the limit block will rebound into the limit groove on the surface of the shaft through the elastic force of the first spring, limit the shaft, and prevent the shaft from rotating. Then, the safety valve will continue to move to the right. During this process, the roller will drive into the descending groove. When the safety valve continues to move to the right, Due to the shape of the descending groove, the safety valve moves downward, and when it moves to the right to the front of the pressure test base, it stops moving, and then the first motor is started to move the safety valve backward to the top of the pressure test base, and then the clamping cylinder is started to place the safety valve on the pressure test base. After placement, the clamping cylinder is moved upward again by the work of the first cylinder, and then the clamping cylinder is moved to the left by the work of the first motor, and due to the shape of the descending groove, it moves upward. When the roller leaves the descending groove, the clamping cylinder will not slide downward by the elastic force of the second spring, thereby limiting the clamping cylinder. This process can move the safety valve on the assembly platform to the pressure test base, thereby freeing up the labor of the staff and reducing the burden on the staff.

[0021] 3. The automatic assembly test pressure adjustment device of the safety valve, through the set assembly mechanism, sequentially places the valve cover, spring, valve disc and valve body on the assembly platform, and then adjusts the output force of the second cylinder through the first precision regulating valve, and then starts the cylinder to drive its compression sleeve to press down the valve disc. When the cylinder output force is equal to the spring force value compressed to a certain position, the safety valve set pressure is roughly near the required set pressure. The calculation method is: the cylinder gas source pressure multiplied by the top area of ​​the cylinder piston is the cylinder output force, and the safety valve set pressure is the gas source pressure of the valve disc under the working condition. The gas source pressure multiplied by the sealing force area at the bottom of the valve disc is the spring in the safety valve The force value at the time of opening can be converted to the air source pressure of the cylinder, and then the operation of the second motor makes the double-slider screw linear module drive its two sets of first reduction motors to slide toward each other at the same time, until the two sets of rubber gears are close to the valve body flange at the same time, and then start the first reduction motor, thereby driving the two sets of rubber gears to drive the valve body to rotate at the same time, until the valve body and the valve cover rotate to a large resistance, indicating that the valve body has rotated into place, close the first reduction motor, and operate the double-slider screw linear module to reverse output to drive the two sets of first reduction motors to slide to the original position in the opposite direction, and then operate the second cylinder to retract to the initial position to complete the assembly of the safety valve.

[0022] 4. The safety valve is automatically assembled with a pressure test adjustment device. The safety valve is removed and moved to the pressure test base through the set pressure test adjustment mechanism. Then, the output force of the third cylinder and the pressure test pressure of the fourth cylinder are adjusted through the precision regulating valve. Then, the third cylinder is started to move the end of the pressure rod close to the pressure test base downward, and the safety valve is fixed on the pressure test base. Then, the pressure test air source is turned on to inflate and pressure test the pressure test base. When the set pressure of the safety valve is qualified, the pressure holding test of the safety valve is started to detect its sealing pressure and return seat pressure. When the set pressure of the safety valve is unqualified, the cover is placed on the safety valve, and the fourth cylinder is operated to move the lifting frame downward, so that the hexagonal hole at the bottom of the lower internal sliding sleeve slides into the surface of the hexagonal column at the bottom of the cover, and the third spring between the upper internal sliding sleeve and the lower internal sliding sleeve can buffer the safety valve. The pressure test base opens the air source again to test the performance of the safety valve. After the test is passed, the safety valve is removed to complete the pressure test of the safety valve. The device can effectively improve the assembly efficiency of the safety valve, reduce manual operation time, and improve the assembly accuracy of the safety valve. In addition, except for opening the equipment for pressure test during the pressure test, the pressure test, adjustment and re-pressure test of the safety valve are all automatically completed, thereby further improving the assembly efficiency of the safety valve. Through higher-precision adjustment, the accuracy and consistency of the set pressure of the safety valve can be further improved, thereby further ensuring the production quality level of the safety valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 It is a three-dimensional diagram of the structure of the present invention;

[0025] Figure 2 It is a three-dimensional diagram of the movable components of the structure of the present invention;

[0026] Figure 3 This is an enlarged stereoscopic view of the structural screw of the present invention;

[0027] Figure 4 It is a left side sectional stereoscopic view of the second box body of the structure of the present invention;

[0028] Figure 5 It is a three-dimensional diagram of the limit block and limit groove of the structure of the present invention;

[0029] Figure 6 It is a sectional stereoscopic view of the front of the first sliding box and the front of the second sliding box of the structure of the present invention;

[0030] Figure 7 This is a back perspective view of the sliding assembly of the structure of the present invention;

[0031] Figure 8 It is a three-dimensional diagram of the structural assembly mechanism of the present invention;

[0032] Fig. 9 This is a three-dimensional diagram of the double-slider screw type linear module of the present invention;

[0033] Fig.10 This is a three-dimensional diagram of the pressure test adjustment mechanism of the present invention;

[0034] Fig.11 This is a three-dimensional view of the bottom of the second bracket of the structure of the present invention;

[0035] Fig.12 This is a three-dimensional diagram of the spline shaft structure of the present invention;

[0036] Fig.13 It is a sectional stereoscopic view of the outer cylinder surface of the structure of the present invention.

[0037] In the figure: 1, cabinet; 2, transport mechanism; 21, moving assembly; 211, first box; 212, screw; 213, first motor; 214, limit rod; 215, screw block; 216, first sliding box; 217, second sliding box; 218, fixed block; 219, rotating shaft; 2111, fixed sleeve; 2112, first cylinder; 2113, clamping cylinder; 2114, second box; 2115, slide plate; 2 116, slider; 2117, first spring; 2118, stop block; 2119, stop slot; 22, sliding assembly; 221, guide rod; 222, fixing plate; 223, second spring; 224, stop plate; 225, first fixing rod; 226, roller; 227, gear; 228, L frame; 229, rack; 2211, L block; 2212, descending slot; 3, assembly mechanism; 31, first bracket; 32 , first precision regulating valve; 33, second cylinder; 34, assembly platform; 35, double slider screw linear module; 36, second motor; 37, first reduction motor; 38, rubber gear; 39, press sleeve; 4, test pressure adjustment mechanism; 41, second bracket; 42, test pressure base; 43, third cylinder; 44, articulated frame; 45, hinged part; 46, pressure rod; 47, second precision regulating valve; 48, slide rail slider module; 4 9. Lifting frame; 411. Fourth cylinder; 412. Fixed cylinder; 413. Second reduction motor; 414. First bearing; 415. Spline shaft; 416. Second bearing; 417. Rotating cylinder; 418. Outer cylinder; 419. Second fixed rod; 421. Upper inner sliding sleeve; 422. Third spring; 423. Lower inner sliding sleeve; 424. Ball bearing module; 425. Cover; 5. Background board; 6. Touch screen. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The present invention provides the following technical solutions:

[0040] Embodiment 1

[0041] Combination Figures 1 to 7 , a safety valve automatic assembly test pressure adjustment device, comprising a cabinet 1, a conveying mechanism 2 is arranged near the top of the front of the cabinet 1, an assembly mechanism 3 is arranged on the left side of the top of the cabinet 1, and a test pressure adjustment mechanism 4 is arranged on the right side of the bottom of the cabinet 1;

[0042] The transport mechanism 2 includes a moving assembly 21 and a sliding assembly 22. The moving assembly 21 is arranged on the front side of the cabinet 1 near the top, and the sliding assembly 22 is arranged inside the moving assembly 21.

[0043] The moving assembly 21 includes a first box body 211, which is fixedly connected to the front of the cabinet 1 near the top. The right side of the inner wall of the first box body 211 is rotatably connected to a screw rod 212, and the left side of the first box body 211 is fixedly connected to a first motor 213. The left and right sides of the inner wall of the first box body 211 are symmetrically fixedly connected to limit rods 214, and the surface of the screw 212 is threadedly connected to a screw block 215. The top of the screw block 215 is fixedly connected to a first sliding box 216, and the first sliding box 216 is slidably connected to the second sliding box 217 up and down. The top of the second sliding box 217 is fixedly connected to a fixed block 218, and the front of the fixed block 218 is provided with a rotating The shaft 219 has a fixed sleeve 2111 fixedly connected to the rear end of the rotating shaft 219, a first cylinder 2112 fixedly connected inside the fixed sleeve 2111, a clamping cylinder 2113 fixedly connected to the output end of the first cylinder 2112, a second box 2114 fixedly connected to the front of the fixed block 218, a slide plate 2115 slidably connected to the inner wall of the second box 2114, four first springs 2117 fixedly connected to the bottom of the slide plate 2115, a slider 2116 fixedly connected to the top of the slider 2115, a limiting block 2118 fixedly connected to the top of the slider 2116, and a limiting groove 2119 symmetrically corresponding to the limiting block 2118 is provided on the surface of the rotating shaft 219;

[0044] The sliding assembly 22 includes a guide rod 221, which is fixedly connected to the bottom of the inner wall of the first sliding box 216 in a bilaterally symmetrical manner. A fixed plate 222 is slidably connected to the surface of the guide rod 221 up and down. A second spring 223 is sleeved on the surface of the first guide rod 221 between the bottom of the inner wall of the first sliding box 216 and the fixed plate 222. A limit plate 224 is fixedly connected to the top of the guide rod 221. A first fixed rod 225 is fixedly connected to the front of the second sliding box 217 near the top. A roller 226 is rotatably connected to the front end of the first fixed rod 225. A gear 227 is fixedly connected to the surface of the rotating shaft 219 near the front end. An L frame 228 is fixedly connected to the front of the first box body 211. A rack 229 is fixedly connected to the top of the L frame 228. An L block 2211 is fixedly connected to the right side of the front of the first box body 211. A descending groove 2212 is provided on the back of the L block 2211.

[0045] Furthermore, the output end of the first motor 213 is fixedly connected to the left end of the screw rod 212, and a hole is opened on the left side of the screw block 215 near the bottom and symmetrically corresponds to the limiting rod 214, and the screw block 215 is slidably connected to the surface of the limiting rod 214 through the hole. The two limiting rods 214 limit the screw block 215 so that the screw block 215 can only move toward each other as the screw rod 212 rotates.

[0046] Furthermore, a hole matching the rotating shaft 219 is opened on the front side of the fixed block 218, and the surface of the rotating shaft 219 passes through and is rotatably connected in the hole, the top ends of the four first springs 2117 are fixedly connected to the bottom of the slide plate 2115, and a groove matching the slider 2116 is opened on the top of the second box body 2114, and the surface of the slider 2116 passes through and is slidably connected in the hole.

[0047] Furthermore, the surface of the fixed plate 222 is fixedly connected to the inner wall of the second sliding box 217, the bottom end of the second spring 223 is fixedly connected to the bottom of the inner wall of the first sliding box 216, the top of the second spring 223 is fixedly connected to the bottom of the fixed plate 222, and the surface of the limiting plate 224 is connected to the inner wall of the second sliding box 217 by sliding up and down. When the top of the fixed plate 222 is in contact with the bottom of the limiting plate 224, the clamping cylinder 2113 and the safety valve are in a horizontal position.

[0048] Furthermore, the gear 227 is meshed with the rack 229 , and the roller 226 is at the same level as the entrance of the descending groove 2212 .

[0049] Embodiment 2

[0050] See also Figure 8-9 , and on the basis of the first embodiment, an assembly mechanism 3 is further obtained.

[0051] Furthermore, the assembly mechanism 3 includes a first bracket 31, which is fixedly connected to the left side of the top of the cabinet 1, a first precision regulating valve 32 is fixedly connected to the top of the left side of the first bracket 31, a second cylinder 33 is fixedly connected to the top of the first bracket 31, a pressing sleeve 39 is fixedly connected to the output end of the second cylinder 33, an assembly platform 34 is fixedly connected to the top of the first bracket 31, a double-slider screw linear module 35 is fixedly connected to the front of the first bracket 31, a second motor 36 is fixedly connected to the left side of the double-slider screw linear module 35, a first reduction motor 37 is symmetrically arranged on the front of the double-slider screw linear module 35, and a rubber gear 38 is fixedly connected to the output end of the first reduction motor 37.

[0052] Furthermore, the first precision regulating valve 32 is connected to the second cylinder 33 through an air pipe, and the first reduction motor 37 is fixedly connected to the front side of the screw block 215 inside the double-slider screw type linear module 35 .

[0053] Embodiment 3

[0054] See also Figure 10-13 , and on the basis of the first embodiment, a test pressure adjustment mechanism 4 is further obtained.

[0055] Furthermore, the pressure test adjustment mechanism 4 includes a second bracket 41 and a cover 425, the second bracket 41 is fixedly connected to the top of the cabinet 1, the bottom of the second bracket 41 is fixedly connected to a pressure test base 42, the right side of the bottom of the cabinet 1 is symmetrically fixedly connected to a third cylinder 43, the bottom of the second bracket 41 is symmetrically fixedly connected to an articulated frame 44, the top of the articulated frame 44 is hinged with a hinge 45, the hinge 45 is hinged with a pressure rod 46 inside, a second precision regulating valve 47 is fixedly connected to the right side of the back of the inner wall of the cabinet 1, the back of the second bracket 41 is fixedly connected to a slide rail slider module 48, the front of the slide rail slider module 48 is fixedly connected to a lifting frame 49, the top of the second bracket 41 is fixedly connected to a fourth cylinder 411 near the back, and the top of the second bracket 41 is fixedly connected to A fixed cylinder 412 is provided, and a second reduction motor 413 is fixedly connected to the top of the fixed cylinder 412, and a spline shaft 415 is fixedly connected to the output end of the second reduction motor 413. A first bearing 414 is arranged near the front on the top of the second bracket 41, and a second bearing 416 is arranged on the top of the lifting frame 49. The inner ring of the second bearing 416 is fixedly connected to a rotating cylinder 417. Four second fixed rods 419 are fixedly connected to the bottom of the lifting frame 49, and an outer cylinder 418 is fixedly connected to the bottom of the second fixed rod 419. An upper internal sliding sleeve 421 is fixedly connected to the bottom of the rotating cylinder 417, and a third spring 422 is fixedly connected to the bottom of the upper internal sliding sleeve 421, and a lower internal sliding sleeve 423 is fixedly connected to the bottom of the third spring 422. Four ball modules 424 are fixedly connected to the bottom of the outer cylinder 418.

[0056] Furthermore, the bottom of the pressure test base 42 is connected to the second precision regulating valve 47 through an air pipe, the output end of the third cylinder 43 is hinged to the end of the pressure test base 42 away from the pressure test base 42, and the output end of the fourth cylinder 411 is fixedly connected to the top of the lifting frame 49. Holes matching the outer ring of the first bearing 414 and the outer ring of the second bearing 416 are respectively provided at the top of the second bracket 41 near the front and the top of the lifting frame 49, and the outer ring of the first bearing 414 is fixedly connected to the hole opened at the top of the second bracket 41, and the outer ring of the second bearing 416 is fixedly connected to the hole opened at the top of the lifting frame 49.

[0057] Furthermore, a groove matching the surface of the spline shaft 415 is formed on the inner wall of the rotating cylinder 417, and the surface of the spline shaft 415 is slidably connected to the groove, and the spline shaft 415 is limited so that the rotating cylinder 417 rotates with the rotation of the spline shaft 415. The surface of the rotating cylinder 417 is slidably connected to the outer cylinder 418, and the lower internal sliding sleeve 423 is slidably connected to the outer cylinder 418. The interior of the sleeve cover 425 fits the surface of the safety valve being tested. A hexagonal hole is formed at the bottom end of the lower sliding sleeve, and a hexagonal column corresponding to the hexagonal hole is fixedly connected to the top of the sleeve. A background plate 5 is fixedly connected between the first bracket 31 and the second bracket, and a touch screen 6 is symmetrically fixedly connected to the left and right sides of the front of the background plate 5.

[0058] In actual operation, when the device is used, the first motor 213 is started to move the screw block 215 to the front of the assembly platform 34, and then the clamping cylinder 2113 is started to increase the distance between the two clamping blocks of the clamping cylinder 2113, and then the first cylinder 2112 is started to move the clamping cylinder 2113 backward, so that the assembled safety valve is located between the two clamping blocks of the clamping cylinder 2113, and then the clamping cylinder 2113 is started again to clamp and fix the safety valve, and then the first cylinder 2112 is started again to drive the clamping cylinder 2113 to move the safety valve backward. This process does not require manual removal of the safety valve on the assembly platform 34, and can prevent the staff from accidentally touching the operating button, causing the second cylinder 33 to drive the pressing sleeve 39 to move downward and press the staff's hand, thereby providing safety protection for the staff;

[0059] After the clamping cylinder 2113 clamps and fixes the safety valve, the first motor 213 is started to move the screw block 215 to the right, thereby driving the clamping cylinder 2113 and the safety valve clamped by it to move to the right. During the rightward movement, the gear 227 will mesh with the rack 229, so that the rotating shaft 219 will rotate and roll. During the rotation of the rotating shaft 219, the rotating shaft 219 will squeeze the limit block 2118, so that the limit block 2118 moves downward. After the rotating shaft 219 rotates 180 degrees, the gear 227 will not mesh with the rack 229. At the same time, the limit block 2118 will be rebounded into the limit groove 2119 on the surface of the rotating shaft 219 by the elastic force of the first spring 2117, limiting the rotating shaft 219 so that the rotating shaft 219 will not rotate, and then continue to drive the safety valve to move to the right. In this process, the roller 226 will enter the descending groove 2212. When the safety valve continues to move to the right, it will be due to the descending groove 2 212, and moves downward. When the safety valve moves to the right to the front of the pressure test base 42, it stops moving, and then the first motor 213 is started to move the safety valve backward to the top of the pressure test base 42, and then the clamping cylinder 2113 is started to place the safety valve on the pressure test base 42. After the placement is completed, the clamping cylinder 2113 is moved upward again by the operation of the first cylinder 2112, and then the clamping cylinder 2113 is moved to the left by the operation of the first motor 213, and it moves upward due to the shape of the descending groove 2212. When the roller 226 leaves the descending groove 2212, the clamping cylinder 2113 will not slide downward due to the elastic force of the second spring 223, thereby limiting the clamping cylinder 2113. This process can move the safety valve on the assembly platform 34 to the pressure test base 42, thereby freeing the labor of the staff and reducing the burden on the staff.

[0060] Place the valve cover, spring, valve disc and valve body on the assembly platform 34 in sequence, and then adjust the output force of the second cylinder 33 through the first precision regulating valve 32, and then start the cylinder to drive its compression sleeve 39 to press down the valve disc. When the cylinder output force is equal to the spring force value compressed to a certain position, the safety valve set pressure is roughly near the required set pressure. The calculation method is: the cylinder gas source pressure multiplied by the top area of ​​the cylinder piston is the cylinder output force, and the safety valve set pressure is the gas source pressure of the valve disc under working conditions. The gas source pressure multiplied by the sealing force area at the bottom of the valve disc is the force value of the spring when the safety valve is opened. The gas source pressure of the cylinder can be obtained by conversion. The pressure is generated, and the operation of the second motor 36 causes the double-slider screw linear module 35 to drive its two groups of first reduction motors 37 to slide toward each other at the same time, until the two groups of rubber gears 38 are simultaneously close to the valve body flange, and then the first reduction motor 37 is started, thereby driving the two groups of rubber gears 38 to drive the valve body to rotate at the same time, until the valve body and the valve cover rotate to a large resistance, indicating that the valve body has rotated into place, and the first reduction motor 37 is turned off, and the double-slider screw linear module 35 is operated to output in the opposite direction to drive the two groups of first reduction motors 37 to slide to the original position in the opposite direction, and then the second cylinder 33 is operated to retract to the initial position, and the assembly of the safety valve is completed;

[0061] The safety valve is removed and carried to the pressure test base 42, and then the output force of the third cylinder 43 and the pressure test pressure of the fourth cylinder 411 are adjusted by the precision regulating valve, and then the third cylinder 43 is started to make the end of the pressure rod 46 close to the pressure test base 42 move downward, and the safety valve is fixed on the pressure test base 42, and then the pressure test air source is turned on to inflate and pressure test the pressure test base. When the set pressure of the safety valve is qualified, the pressure holding test of the safety valve is started to detect its sealing pressure and return seat pressure. When the set pressure of the safety valve is unqualified, the cover 425 is placed on the safety valve, and then the fourth cylinder 411 is operated to move the lifting frame 49 downward, so that the hexagonal hole at the bottom of the lower internal sliding sleeve 423 slides into the surface of the hexagonal column at the bottom of the cover 425, and the third spring 422 between the upper internal sliding sleeve 421 and the lower internal sliding sleeve 423 can buffer the safety valve to prevent The output force of the fourth cylinder 411 is too large, which causes the safety valve to be damaged. Then the second reduction motor 413 is started to drive the internal sliding sleeve 423 to rotate, so that the valve cover and the valve body rotate relative to each other. When the rotation is completed, the lifting frame 49 is retracted upward through the fourth cylinder 411, and the pressure test base 42 opens the air source again to test the performance of the safety valve. After the test is qualified, the safety valve is removed to complete the pressure test of the safety valve. The device can effectively improve the assembly efficiency of the safety valve, which can not only reduce the manual operation time, but also improve the assembly accuracy of the safety valve. In addition, during the pressure test process, except for starting the equipment for pressure test, the pressure test, adjustment and re-pressure test of the safety valve are all automatically completed, which further improves the assembly efficiency of the safety valve. Through higher-precision adjustment, the accuracy and consistency of the set pressure of the safety valve can be further improved, thereby further ensuring the production quality level of the safety valve.

[0062] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0063] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safety valve automatic assembly pressure test adjustment device, comprising a cabinet (1), characterized in that: A conveying mechanism (2) is provided on the front side of the cabinet (1) near the top, an assembling mechanism (3) is provided on the left side of the top of the cabinet (1), and a pressure test adjustment mechanism (4) is provided on the right side of the bottom of the cabinet (1); The transport mechanism (2) comprises a moving component (21) and a sliding component (22); the moving component (21) is arranged on the front side of the cabinet (1) near the top, and the sliding component (22) is arranged inside the moving component (21); The moving assembly (21) comprises a first box (211), the first box (211) being fixedly connected to the front of the cabinet (1) near the top, a screw rod (212) being rotatably connected to the right side of the inner wall of the first box (211), a first motor (213) being fixedly connected to the left side of the first box (211), and limit rods (214) being symmetrically fixedly connected to the left and right sides of the inner wall of the first box (211) in a front-to-back manner, the screw rod (212) The surface of the screw block (215) is threadedly connected, the top of the screw block (215) is fixedly connected to a first sliding box (216), the first sliding box (216) is slidably connected to a second sliding box (217) up and down, the top of the second sliding box (217) is fixedly connected to a fixed block (218), a rotating shaft (219) is arranged on the front side of the fixed block (218) near the top, the rear end of the rotating shaft (219) is fixedly connected to a fixed sleeve (2111), the fixed sleeve (2111) is fixedly connected to a first cylinder (2112), and the first cylinder (2112) outputs The end of the fixed block (218) is fixedly connected to a clamping cylinder (2113); the front of the fixed block (218) is fixedly connected to a second box body (2114); the inner wall of the second box body (2114) is slidably connected to a slide plate (2115) up and down; the bottom of the slide plate (2115) is fixedly connected to four first springs (2117); the top of the slide plate (2115) is fixedly connected to a slider (2116); the top of the slider (2116) is fixedly connected to a limiting block (2118); and limiting grooves (2119) are symmetrically provided on the surface of the rotating shaft (219) and correspond to the limiting block (2118); The sliding assembly (22) comprises a guide rod (221), the guide rod (221) being fixedly connected to the bottom of the inner wall of the first sliding box (216) in a bilaterally symmetrical manner, a fixing plate (222) being slidably connected to the surface of the guide rod (221) up and down, a second spring (223) being sleeved between the bottom of the inner wall of the first sliding box (216) and the fixing plate (222) on the surface of the guide rod (221), a limit plate (224) being fixedly connected to the top of the guide rod (221), a first fixing rod (225) being fixedly connected to the front of the second sliding box (217) near the top, a roller (226) being rotatably connected to the front end of the first fixing rod (225), a gear (227) being fixedly connected to the surface of the rotating shaft (219) near the front end, an L frame (228) being fixedly connected to the front of the first box body (211), a rack (229) being fixedly connected to the top of the L frame (228), and an L fixedly connected to the right side of the front of the first box body (211). Block (2211), the back side of the L block (2211) is provided with a descending groove (2212).

2. The automatic assembly test pressure adjustment device for a safety valve according to claim 1, characterized in that: The output end of the first motor (213) is fixedly connected to the left end of the screw rod (212); a hole is provided on the left side of the screw block (215) near the bottom and symmetrically corresponds to the limit rod (214); the screw block (215) is slidably connected to the surface of the limit rod (214) through the hole; the two limit rods (214) limit the screw block (215) so that the screw block (215) can only move towards each other as the screw rod (212) rotates.

3. The automatic assembly test pressure adjustment device for a safety valve according to claim 2 is characterized in that: The front side of the fixed block (218) is provided with a hole matching the rotating shaft (219), and the surface of the rotating shaft (219) penetrates and is rotatably connected in the hole; the top ends of the four first springs (2117) are fixedly connected to the bottom of the slide plate (2115); the top of the second box body (2114) is provided with a groove matching the sliding block (2116), and the surface of the sliding block (2116) penetrates and is slidably connected in the hole.

4. The automatic assembly test pressure adjustment device for a safety valve according to claim 3 is characterized in that: The surface of the fixed plate (222) is fixedly connected to the inner wall of the second sliding box (217), the bottom end of the second spring (223) is fixedly connected to the bottom of the inner wall of the first sliding box (216), the top end of the second spring (223) is fixedly connected to the bottom of the fixed plate (222), and the surface of the limiting plate (224) is connected to the inner wall of the second sliding box (217) in an up-and-down sliding manner. When the top of the fixed plate (222) is in contact with the bottom of the limiting plate (224), the clamping cylinder (2113) and the safety valve are in a horizontal position.

5. The automatic assembly test pressure adjustment device for a safety valve according to claim 4 is characterized in that: The gear (227) is meshed with the rack (229), and the roller (226) is at the same level as the entrance of the descending groove (2212).

6. The automatic assembly test pressure adjustment device for a safety valve according to claim 5 is characterized in that: The assembly mechanism (3) comprises a first bracket (31), the first bracket (31) being fixedly connected to the left side of the top of the cabinet (1), a first precision regulating valve (32) being fixedly connected to the top of the left side of the first bracket (31), a second cylinder (33) being fixedly connected to the top of the first bracket (31), a pressing sleeve (39) being fixedly connected to the output end of the second cylinder (33), an assembly platform (34) being fixedly connected to the top of the first bracket (31), a double-slider screw-type linear module (35) being fixedly connected to the front of the first bracket (31), a second motor (36) being fixedly connected to the left side of the double-slider screw-type linear module (35), a first reduction motor (37) being symmetrically arranged on the front of the double-slider screw-type linear module (35), and a rubber gear (38) being fixedly connected to the output end of the first reduction motor (37).

7. The automatic assembly test pressure adjustment device for a safety valve according to claim 6, characterized in that: The first precision regulating valve (32) is connected to the second cylinder (33) via an air pipe, and the first reduction motor (37) is fixedly connected to the front face of a screw block (215) inside the double-slider screw-type linear module (35).

8. The automatic assembly test pressure adjustment device for a safety valve according to claim 7, characterized in that: The test pressure adjustment mechanism (4) comprises a second bracket (41) and a cover (425); the second bracket (41) is fixedly connected to the top of the cabinet (1); the inner bottom of the second bracket (41) is fixedly connected to a test pressure base (42); the right side of the inner bottom of the cabinet (1) is symmetrically fixedly connected to a third cylinder (43); the inner bottom of the second bracket (41) is symmetrically fixedly connected to an articulated frame (44); the top of the articulated frame (44) is articulated to a hinge (45); the hinge (45) has a pressure rod (46) articulated inside; the cabinet A second precision regulating valve (47) is fixedly connected to the right side of the back side of the inner wall of the body (1); a slide rail slider module (48) is fixedly connected to the back side of the inner side of the second bracket (41); a lifting frame (49) is fixedly connected to the front side of the slide rail slider module (48); a fourth cylinder (411) is fixedly connected to the top of the second bracket (41) near the back side; a fixing cylinder (412) is fixedly connected to the top of the second bracket (41) near the front side; a second reduction motor (413) is fixedly connected to the top of the fixing cylinder (412); and the second reduction motor (413) The output end is fixedly connected to a spline shaft (415); a first bearing (414) is arranged at the top of the second bracket (41) near the front; a second bearing (416) is arranged at the top of the lifting frame (49); the inner ring of the second bearing (416) is fixedly connected to a rotating cylinder (417); four second fixing rods (419) are fixedly connected to the bottom of the lifting frame (49); the bottom end of the second fixing rod (419) is fixedly connected to an outer cylinder (418); an upper internal sliding sleeve (421) is fixedly connected to the bottom of the rotating cylinder (417); a third spring (422) is fixedly connected to the bottom of the upper internal sliding sleeve (421); a lower internal sliding sleeve (423) is fixedly connected to the bottom of the third spring (422); and four ball assemblies (424) are fixedly connected to the bottom of the outer cylinder (418).

9. The automatic assembly test pressure adjustment device for a safety valve according to claim 8, characterized in that: The bottom of the pressure test base (42) is connected to the second precision regulating valve (47) through an air pipe, the output end of the third cylinder (43) is hinged to the end of the pressure rod (46) away from the pressure test base (42), the output end of the fourth cylinder (411) is fixedly connected to the top of the lifting frame (49), the top of the second bracket (41) near the front and the top of the lifting frame (49) are respectively provided with holes matching the outer ring of the first bearing (414) and the outer ring of the second bearing (416), and the outer ring of the first bearing (414) is fixedly connected to the hole opened in the top of the second bracket (41), and the outer ring of the second bearing (416) is fixedly connected to the hole opened in the top of the lifting frame (49).

10. The automatic assembly test pressure adjustment device for a safety valve according to claim 9, characterized in that: The inner wall of the rotating cylinder (417) is provided with a groove matching the surface of the spline shaft (415), and the surface of the spline shaft (415) is slidably connected to the groove, limiting the position of the spline shaft (415) so that the rotating cylinder (417) rotates along with the rotation of the spline shaft (415). The surface of the rotating cylinder (417) is slidably connected to the outer cylinder (418). The lower internal sliding sleeve (423) is slidably connected to the outer cylinder (418). The inside of the sleeve cover (425) fits the surface of the safety valve to be tested. The bottom end of the lower internal sliding sleeve is provided with a hexagonal hole. The top of the lower internal sliding sleeve is fixedly connected to a hexagonal column corresponding to the hexagonal hole. A background plate (5) is fixedly connected between the first bracket (31) and the second bracket. A touch screen (6) is symmetrically fixedly connected to the left and right sides of the front of the background plate (5).

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