Air tightness testing device of automatic valve

Abstract

The invention discloses an air tightness testing device of an automatic valve. The air tightness testing device comprises a machine table, a top plate fixed above the machine table, a cylinder fixed on the top surface of the top plate, and a lifting plate arranged at the bottom of the top plate and connected with a piston rod at the bottom end of the cylinder, the stable valve clamping structure is arranged in the center of the top of the test supporting plate, is used for clamping a sample valve and comprises a U-shaped supporting block fixed on the surface of the top of the test supporting plate and two inner sliding grooves formed in one side of the U-shaped supporting block; by improving and optimizing an automatic valve airtightness testing device in the prior art, a stable valve clamping structure is designed at the top of the testing supporting plate, stable clamping and limiting can be carried out when a sample valve is subjected to airtightness testing, the stability of subsequent sample valve ventilation during airtightness testing is guaranteed, and the testing efficiency is improved. The sample valve is prevented from shifting and even falling off during air tightness testing in subsequent ventilation, and the stability of the whole testing process is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of valve air tightness testing, and in particular relates to an air tightness testing device for an automated valve. Background Art

[0002] Automatic valve is a common valve. In order to ensure product quality during the production process of automatic valves, multiple tests are required, including the use of air tightness testing devices to test the air tightness of valves. For example, the existing patent with publication number CN218121287U discloses "an automatic air tightness testing device for internal and external air tightness of gas valves, involving the field of valve technology. The present invention includes a test bench, the top of which is fixedly connected with an electro-hydraulic push rod, the telescopic end of the electro-hydraulic push rod is horizontally fixedly connected with a lifting plate, the bottom of the lifting plate is fixedly connected with a fixed frame, the bottom of the lifting plate on both sides of the fixed frame is respectively fixed with a first connecting copper tube and a second connecting copper tube through a fixing seat, the first connecting copper tube and the second connecting copper tube are sleeved and fixed with a connecting hose at one end close to the fixed frame, and a connector is fixedly connected at the end of the connecting hose, and the other end of the first connecting copper tube is connected to the gas source supply end fixed at the bottom of the test bench through an air guide pipe". It can be seen that the application describes a common air tightness testing device for automatic valves;

[0003] However, in actual use of the air tightness testing device for automated valves in the prior art, a simple elastic abutment plate is used on the test tray to limit the valve, resulting in that the stability of the valve placed on the test tray cannot be guaranteed. The valve is prone to displacement or even falling off during the subsequent ventilation and air tightness test, thereby reducing the stability of the entire test process. For this reason, the present invention needs to improve and optimize the air tightness testing device for automated valves in the prior art. Summary of the invention

[0004] The purpose of the present invention is to provide an air tightness testing device for an automated valve to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an automatic valve air tightness test device, comprising:

[0006] A machine platform, a top plate fixed on the top of the machine platform, a cylinder fixed on the top surface of the top plate, a lifting plate arranged at the bottom of the top plate and connected to the piston rod at the bottom end of the cylinder, a test support plate fixed below the lifting plate, a liquid cavity opened on the top of the machine platform, an air source tank fixed on the left surface of the machine platform, an air pump connected to the top of the air source tank, a sample valve, and an air supply hose connected between the sample valve and the air pump;

[0007] A stable valve clamping structure is arranged at the top center of a test support plate and clamps a sample valve, comprising a U-shaped support block fixed to the top surface of the test support plate, two inner slide grooves opened inside one side of the U-shaped support block, a spring and an inner slide block installed in the inner slide groove, and a movable column rotatably installed on the top surface of the inner slide block, wherein the top end of the movable column passes through the top of the U-shaped support block and is fixed with a limiting pressure block, the sample valve is placed on the inner side of the stable valve clamping structure, and the two limiting pressure blocks are respectively pressed on both ends of the sample valve.

[0008] Preferably, an arc-shaped notch corresponding to the sample valve is provided on the bottom surface of the limiting pressure block, and an anti-slip pad is installed on the inner wall of the arc-shaped notch.

[0009] Preferably, a shaft rod is passed through and rotatably installed at the bottom of the inner slider, the top end of the shaft rod is fixed to the bottom surface of the movable column, the surface of the inner slider is provided with a shaft hole corresponding to the shaft rod, a rubber seat is embedded in the inner wall of one side of the shaft hole, a positioning block is provided on the surface of the rubber seat, two positioning grooves corresponding to the positioning block are provided on the surface of the shaft rod, an end of the positioning block is squeezed into one of the positioning grooves, the rubber seat and the positioning block are an integrated structure, and an elliptical cavity is provided in the rubber seat.

[0010] Preferably, a circular water storage tank is provided inside the machine, and the circular water storage tank surrounds the outside of the liquid cavity, and a plurality of overflow ports are provided between the liquid cavity and the circular water storage tank. A drain port communicating with the circular water storage tank is provided on the right side surface of the machine, and a drain plug for sealing the drain port is threadedly connected to the right side surface of the machine.

[0011] Preferably, a circular water retaining strip is installed on the top surface of the machine, and the circular water retaining strip surrounds the edge of the liquid chamber.

[0012] Preferably, it also includes a monitoring system, which includes an industrial control mainboard, a data transmission module, a monitoring module and a reminder module. The monitoring module is connected to a liquid level sensor installed on the inner wall of one side of the circular water storage tank, and can monitor the water level in the circular water storage tank in real time. The reminder module is connected to a reminder light installed on the front surface of the machine.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention improves and optimizes the air tightness testing device of the automated valve in the prior art, and designs a stable valve clamping structure on the top of the test support plate, which can perform stable clamping and limiting when the sample valve is subjected to an air tightness test, thereby ensuring the stability of the subsequent sample valve during ventilation for an air tightness test, preventing the sample valve from being displaced or even falling off during subsequent ventilation for an air tightness test, and improving the stability of the entire testing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a structural schematic diagram of the stable valve clamping structure of the present invention;

[0016] Figure 3 It is a cross-sectional view of the stable valve clamping structure of the present invention;

[0017] Figure 4 For the present invention Figure 3 A partial enlarged view of the middle A area;

[0018] Figure 5 is a cross-sectional view of the machine of the present invention;

[0019] Figure 6 is a system diagram of the monitoring system of the present invention;

[0020] In the figure: 1. machine platform; 2. top plate; 3. cylinder; 4. lifting plate; 5. test support plate; 6. stable valve clamping structure; 61. U-shaped support block; 62. movable column; 63. limit pressure block; 64. anti-skid pad; 65. inner slide groove; 66. spring; 67. inner slide block; 671. shaft hole; 68. shaft rod; 69. rubber seat; 610. positioning block; 611. positioning slot; 7. sample valve; 8. air source tank; 9. air pump; 10. air supply hose; 11. drain plug; 12. liquid level sensor; 13. reminder light; 14. circular water retaining strip; 15. liquid cavity; 16. overflow port; 17. circular water storage tank; 18. drain port. DETAILED DESCRIPTION

[0021] 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.

[0022] Example

[0023] See also Figures 1 to 6 , is an embodiment of the present invention, which provides a technical solution: an automatic valve air tightness test device, comprising

[0024] Machine 1, top plate 2 fixed on top of machine 1 by two columns, cylinder 3 fixed on the top surface of top plate 2 by bolts, lifting plate 4 arranged at the bottom of top plate 2 and connected to the piston rod at the bottom end of cylinder 3, test support plate 5 fixed under lifting plate 4 by two vertical rods, liquid chamber 15 opened on the top of machine 1, air source tank 8 fixed on the left surface of machine 1, air pump 9 connected to the top of air source tank 8, sample valve 7, air supply hose 10 connected between sample valve 7 and air pump 9, and sample valve 7 can be connected to air supply hose later 10 is connected to the air pump 9, and then the sample valve 7 is stably clamped above the test support plate 5 through the stable valve clamping structure 6, and then the cylinder 3 is started, so that the piston rod of the cylinder 3 pushes the lifting plate 4 and the test support plate 5 downward, so that the test support plate 5 and the sample valve 7 can be immersed in the water of the liquid cavity 15. At this time, the air pump 9 is started to ventilate the sample valve 7. If bubbles appear in the liquid cavity 15, it is determined that the sample valve 7 has an airtightness fault, and there may be problems such as damage and leakage. Otherwise, the sample valve 7 does not have an airtightness fault;

[0025] The stable valve clamping structure 6 is arranged at the top center of the test support plate 5 and clamps the sample valve 7, including a U-shaped support block 61 welded and fixed to the top surface of the test support plate 5, two inner slide grooves 65 opened inside one side of the U-shaped support block 61, a spring 66 and an inner slide block 67 installed in the inner slide groove 65, and a movable column 62 rotatably installed on the top surface of the inner slide block 67. The top of the movable column 62 passes through the top of the U-shaped support block 61 and is welded and fixed with a limiting pressure block 63. The sample valve 7 is placed on the inner side of the stable valve clamping structure 6, and the two limiting pressure blocks 63 are respectively pressed on the two ends of the sample valve 7, so that the sample valve 7 can be stably pressed and limited. In actual use, the limiting pressure block 63 is first removed from the U-shaped support block 61. The upper part of the support block 61 is rotated and moved away, and then the sample valve 7 is placed on the inner side of the U-shaped support block 61, and then the limit pressure block 63 is lifted, so that the movable column 62 moves up with the inner sliding block 67, and the spring 66 is gradually compressed until the limit pressure block 63 is lifted to a height higher than the sample valve 7, and then the limit pressure block 63 is rotated back to the upper part of the U-shaped support block 61, and the limit pressure block 63 is located above one end of the sample valve 7. At this time, the limit pressure block 63 is released, and the spring 66 will push the inner sliding block 67 back, and the limit pressure block 63 moves down and presses tightly on the end of the sample valve 7, so as to achieve stable clamping and limiting of the sample valve 7, and ensure the stability of the sample valve 7 during the subsequent air tightness test.

[0026] Among them, the bottom surface of the limiting pressure block 63 is provided with an arc-shaped notch corresponding to the sample valve 7, and the inner wall of the arc-shaped notch is glued with an anti-skid pad 64, which is made of rubber material, so that the limiting pressure block 63 can be tightly pressed on the surface of the sample valve 7 later to improve the pressing stability.

[0027] Among them, a shaft rod 68 is passed through and rotatably installed on the bottom of the inner sliding block 67, and the top of the shaft rod 68 is fixed to the bottom surface of the movable column 62. An axial hole 671 corresponding to the shaft rod 68 is opened on the surface of the inner sliding block 67, so that the movable column 62 can be smoothly rotatably installed on the top of the inner sliding block 67.

[0028] A rubber seat 69 is embedded in the inner wall of one side of the shaft hole 671, and a positioning block 610 is arranged on the surface of the rubber seat 69. Two positioning slots 611 corresponding to the positioning block 610 are arranged on the surface of the shaft rod 68. The end of the positioning block 610 is squeezed into one of the positioning slots 611, so that the shaft rod 68 can be assisted by the positioning block 610. When the subsequent movable column 62 rotates, the shaft rod 68 will also rotate and squeeze the positioning block 610 to deform, so that the positioning block 610 is first squeezed out of the initial position The positioning slot 611 is arranged to realize smooth rotation of the shaft rod 68 and the movable column 62. When the movable column 62 rotates 180 degrees along with the limiting pressure block 63, the other positioning slot 611 will be aligned with the positioning block 610. At this time, the end of the positioning block 610 will be squeezed into the positioning slot 611, realizing the limiting of the movable column 62 and the limiting pressure block 63 after rotating 180 degrees, so that the limiting pressure block 63 can be rotated to the top of the sample valve 7 or rotated away from the top of the sample valve 7 to obtain a certain limit without spinning.

[0029] The rubber seat 69 and the positioning block 610 are an integrated structure, both of which are made of rubber material and will undergo elastic deformation when squeezed. An elliptical cavity is provided in the rubber seat 69, so that the positioning block 610 has sufficient deformation space when squeezed.

[0030] Among them, a circular water storage tank 17 is also opened inside the machine 1, and the circular water storage tank 17 surrounds the outside of the liquid cavity 15, and a plurality of overflow ports 16 are opened between the liquid cavity 15 and the circular water storage tank 17. A drain port 18 communicating with the circular water storage tank 17 is opened on the right side surface of the machine 1, and a drain plug 11 for blocking the drain port 18 is also threadedly connected to the right side surface of the machine 1, so that when the subsequent test support plate 5 with the stable valve clamping structure 6 and the sample valve 7 is pressed into the liquid cavity 15, the water level in the liquid cavity 15 rises accordingly. When the water level rises to the overflow port 16, it will overflow into the circular water storage tank 17 to prevent the water in the liquid cavity 15 from overflowing to the top of the machine 1. In the later stage, it is only necessary to regularly unscrew the drain plug 11 so that the water in the circular water storage tank 17 can be discharged.

[0031] A circular water retaining strip 14 is glued and mounted on the top surface of the machine 1 , and the circular water retaining strip 14 surrounds the edge of the liquid cavity 15 , which can further prevent the water in the liquid cavity 15 from being squeezed out.

[0032] Among them, it also includes a monitoring system, which includes an industrial control mainboard, a data transmission module, a monitoring module and a reminder module. The monitoring module is connected to a liquid level sensor 12 installed on the inner wall of one side of the circular water storage tank 17. The model of the liquid level sensor 12 is pico+100 / TF / I, and the water level in the circular water storage tank 17 can be monitored in real time. The reminder module is connected to a reminder light 13 installed on the front surface of the machine 1. If the liquid level sensor 12 detects that the water level in the circular water storage tank 17 reaches a set value, a signal is sent to the industrial control mainboard through the data transmission module. The industrial control mainboard starts the reminder module to light up the reminder light 13, thereby reminding the operator to unscrew the drain plug 11 in time to drain the water in the circular water storage tank 17.

[0033] Although embodiments of the present invention have been shown and described (see the above detailed description for details), it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic valve air tightness test device, characterized in that: include A machine platform (1), a top plate (2) fixed on the top of the machine platform (1), a cylinder (3) fixed on the top surface of the top plate (2), a lifting plate (4) arranged at the bottom of the top plate (2) and connected to the piston rod at the bottom end of the cylinder (3), a test support plate (5) fixed below the lifting plate (4), a liquid chamber (15) opened on the top of the machine platform (1), an air source tank (8) fixed on the left side surface of the machine platform (1), an air pump (9) connected to the top of the air source tank (8), a sample valve (7), and an air supply hose (10) connected between the sample valve (7) and the air pump (9); A stable valve clamping structure (6) is arranged at the top center of a test support plate (5) and clamps a sample valve (7), comprising a U-shaped support block (61) fixed on the top surface of the test support plate (5), two inner slide grooves (65) opened inside one side of the U-shaped support block (61), a spring (66) and an inner slide block (67) installed in the inner slide groove (65), and a movable column (62) rotatably installed on the top surface of the inner slide block (67), the top end of the movable column (62) passes through the top of the U-shaped support block (61) and is fixed with a limiting pressure block (63), the sample valve (7) is placed on the inner side of the stable valve clamping structure (6), and the two limiting pressure blocks (63) are respectively pressed on the two ends of the sample valve (7).

2. The air tightness testing device for an automated valve according to claim 1, characterized in that: The bottom surface of the limiting pressure block (63) is provided with an arc-shaped notch corresponding to the sample valve (7), and an anti-slip pad (64) is installed on the inner wall of the arc-shaped notch.

3. The air tightness testing device for an automated valve according to claim 1, characterized in that: A shaft rod (68) is passed through the bottom of the inner slider (67) and is rotatably mounted thereon. The top end of the shaft rod (68) is fixed to the bottom surface of the movable column (62). An axial hole (671) corresponding to the shaft rod (68) is formed on the surface of the inner slider (67).

4. The air tightness testing device for an automated valve according to claim 3, characterized in that: A rubber seat (69) is embedded in the inner wall of one side of the shaft hole (671), a positioning block (610) is arranged on the surface of the rubber seat (69), and two positioning slots (611) corresponding to the positioning blocks (610) are arranged on the surface of the shaft rod (68), and an end of the positioning block (610) is squeezed into one of the positioning slots (611).

5. The air tightness testing device for an automated valve according to claim 4, characterized in that: The rubber seat (69) and the positioning block (610) are an integrated structure, and an elliptical cavity is provided in the rubber seat (69).

6. The air tightness testing device for an automated valve according to claim 1, characterized in that: The machine (1) is also provided with a circular water storage tank (17) inside, and the circular water storage tank (17) surrounds the outside of the liquid cavity (15), and a plurality of overflow ports (16) are provided between the liquid cavity (15) and the circular water storage tank (17), and a drain port (18) communicating with the circular water storage tank (17) is provided on the right side surface of the machine (1), and a drain plug (11) for sealing the drain port (18) is also threadedly connected to the right side surface of the machine (1).

7. The air tightness testing device for an automated valve according to claim 1, characterized in that: A circular water retaining strip (14) is also installed on the top surface of the machine platform (1), and the circular water retaining strip (14) surrounds the edge of the liquid chamber (15).

8. The air tightness testing device for an automated valve according to claim 6, characterized in that: The machine also includes a monitoring system, which includes an industrial control mainboard, a data transmission module, a monitoring module and a reminder module. The monitoring module is connected to a liquid level sensor (12) installed on the inner wall of one side of the circular water storage tank (17) and can monitor the water level in the circular water storage tank (17) in real time. The reminder module is connected to a reminder light (13) installed on the front surface of the machine (1).

Images