Four-station negative pressure detection machine

Abstract

The application relates to the technical field of filter core detection, and discloses a four-station negative pressure detection machine, which comprises a detection rack and a protection door hingedly arranged on the left and right surfaces of the detection rack. The front surface of the detection rack is provided with an operation table mechanism, and the upper surface of the detection rack is provided with a negative pressure air detection mechanism. The inside of the negative pressure air detection mechanism is provided with a control box mechanism. The upper surface of the detection rack is provided with a lifting adjusting mechanism on the left and right sides of the negative pressure air detection mechanism. The lifting adjusting mechanism can adjust the height of a lifting plate, so that different specifications of filter cores can be lifted, the filter cores are prevented from being inclined due to gravity, and the four filter cores are detected by the negative pressure air detection mechanism. Each filter core corresponds to one air pressure gauge and one air pressure sensor. The touch screen in the control box mechanism can intuitively show the negative pressure values to the staff. The qualified display lamp and the unqualified display lamp can quickly show the detection results of each filter core to the staff.

Description

Technical Field

[0001] This invention relates to the field of filter element testing technology, specifically a four-station negative pressure testing machine. Background Technology

[0002] Filter cartridges can separate impurity particles from liquids or allow different substances to come into full contact, accelerating reactions and ensuring the normal operation of equipment. When fluid enters a filter cartridge containing a filter screen of a certain size, impurities are blocked, while clean fluid flows out through the filter cartridge. During the production process of filter cartridges, air tightness testing is required to ensure the production qualification rate. Traditional testing equipment on the market, such as the air tightness testing equipment for water purification filter cartridges disclosed in Chinese Patent (Authorization Announcement No. CN212658387U), although uses a pressure plate to fix the filter cartridge and prevent deviation to improve testing accuracy, it can only test one filter cartridge at a time, and cannot test multiple filter cartridges at once, resulting in low efficiency. Furthermore, this existing technology cannot provide a direct and quick understanding of the test results, which also directly reduces the testing speed. Therefore, those skilled in the art have provided a four-station negative pressure testing machine to solve the problems mentioned in the background art. Summary of the Invention

[0003] The purpose of this invention is to provide a four-station negative pressure testing machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A four-station negative pressure testing machine includes a testing frame and protective doors hinged to the left and right sides of the testing frame. A controller panel is installed inside the testing frame, and two air tanks are installed on both the front and rear sides of the controller panel inside the testing frame. An operating platform mechanism is provided on the front surface of the testing frame, and a negative pressure gas detection mechanism is provided on the upper surface of the testing frame. A control box mechanism is provided inside the negative pressure gas detection mechanism. Lifting and adjusting mechanisms are provided on both the left and right sides of the negative pressure gas detection mechanism on the upper surface of the testing frame. The operating platform mechanism includes an operating table, a power knob is installed on the surface of the operating table, a power indicator light is installed on one side of the power knob, and an emergency stop switch is installed on one side of the power indicator light.

[0006] As a further embodiment of the present invention: the negative pressure gas detection mechanism includes a negative pressure gas detection seat, on which two protective covers are symmetrically installed. Pressure gauges are installed at both ends of the left and right sides of the negative pressure gas detection seat. Filter elements are placed on the left and right sides of the negative pressure gas detection seat, one side of each pressure gauge. Pressure sensors are installed through the filter elements on both sides of the negative pressure gas detection seat, one end of each pressure sensor having a first air pipe connector. A fixed bracket is installed outside the pressure sensor. Two vacuum pumps are installed at both ends of the lower inner surface of the negative pressure gas detection seat. Two support frames are symmetrically installed outside the vacuum pumps. Two pneumatic valves are installed on one side of two vacuum pumps. A second air pipe connector is installed at one end of each pneumatic valve, and a third air pipe connector is installed on the upper surface of the pneumatic valve. A fourth air pipe connector is installed on the upper surface of the pneumatic valve on the side of the third air pipe connector, and a fifth air pipe connector is installed on the upper surface of the pneumatic valve on the side of the fourth air pipe connector. A support base is installed on the lower inner surface of the negative pressure air detector seat on one side of the pneumatic valves. A cover plate is installed on the upper end of the support base. A first pair of connecting pipes is installed between the support base and the cover plate. A second pair of connecting pipes is installed at one end of the first pair of connecting pipes. A sixth air pipe connector is installed at one end of the second pair of connecting pipes, and a seventh air pipe connector is installed on the upper surface of the second pair of connecting pipes.

[0007] As a further embodiment of the present invention: the control box mechanism includes a control box, a fixing rod is installed at the lower end of the control box, and a touch screen is installed through the front surface of the control box. Two qualified indicator lights are installed on both the left and right sides of the control box, and unqualified indicator lights are installed on both the left and right sides of the control box below the qualified indicator lights.

[0008] As a further embodiment of the present invention: the lifting adjustment mechanism has two first connecting plates, a second connecting plate is installed at the lower end of the first connecting plate, and a third connecting plate is installed at the upper end of the first connecting plate. A limit nut is installed on the upper surface of the third connecting plate, and a limit bolt is connected to the internal thread of the limit nut. A turntable is installed at the upper end of the limit bolt, and a limit block is rotatably connected to the lower end of the limit bolt. A lifting plate is slidably connected between the two first connecting plates.

[0009] As a further embodiment of the present invention: the operating table mechanism, the negative pressure air detection mechanism, the control box mechanism and the lifting and adjusting mechanism are all electrically connected to the controller panel, and the operating table is installed on the front surface of the detection frame.

[0010] As a further embodiment of the present invention: the negative pressure gas detector is installed on the upper surface of the testing frame, and the fixed bracket is installed on the inner side surface of the negative pressure gas detector.

[0011] As a further embodiment of the present invention: the support frame is installed on the inner lower surface of the negative pressure gas detection seat, and the filter element is connected to one end of the first pair of connecting pipes.

[0012] As a further embodiment of the present invention: the fixing rod moves through the two protective covers, and the lower end of the fixing rod is installed on the inner lower surface of the negative pressure gas detector seat.

[0013] As a further embodiment of the present invention: the second connecting plate is installed on the upper surface of the testing frame, the limiting bolt moves through the third connecting plate, the limiting block is installed on the upper surface of the lifting plate, and the filter element moves on the upper surface of the lifting plate.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] This invention incorporates a negative pressure air detection mechanism, a control box mechanism, and a lifting and adjustment mechanism. The lifting and adjustment mechanism allows for adjustment of the height of the lifting plate, facilitating the lifting of filter elements of different specifications and preventing the filter elements from tilting due to gravity. The negative pressure air detection mechanism can simultaneously test four filter elements, resulting in high testing efficiency. Each filter element has its own pressure gauge and pressure sensor, which, along with the touchscreen in the control box mechanism, allow operators to intuitively understand its negative pressure value. Pass and fail indicator lights enable operators to quickly know the test results for each filter element, significantly improving overall testing efficiency and eliminating the need for slow, one-by-one testing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a four-station negative pressure testing machine;

[0017] Figure 2 This is a partial front view of the interior of a four-station negative pressure testing machine;

[0018] Figure 3 This is a schematic diagram of the operating table mechanism in a four-station negative pressure testing machine.

[0019] Figure 4 This is a schematic diagram of the negative pressure detection mechanism in a four-station negative pressure testing machine.

[0020] Figure 5 This is a schematic diagram of the structure of a pressure sensor in a four-station negative pressure testing machine;

[0021] Figure 6 This is a schematic diagram of the internal structure of a negative pressure gas detection seat in a four-station negative pressure testing machine;

[0022] Figure 7 for Figure 6 Enlarged view of A in the middle;

[0023] Figure 8 for Figure 6 Enlarged view of B in the middle;

[0024] Figure 9 This is a schematic diagram of the control box mechanism in a four-station negative pressure testing machine.

[0025] Figure 10 This is a schematic diagram of the lifting and adjusting mechanism in a four-station negative pressure testing machine.

[0026] In the diagram: 1. Detection frame; 2. Protective door; 3. Controller panel; 4. Gas tank; 5. Operating table mechanism; 6. Negative pressure gas detection mechanism; 7. Control box mechanism; 8. Lifting and adjusting mechanism; 9. Operating table; 10. Power knob; 11. Power indicator light; 12. Emergency stop switch; 13. Negative pressure gas detection seat; 14. Protective cover; 15. Pressure gauge; 16. Filter element; 17. Pressure sensor; 18. First gas pipe connector; 19. Fixed bracket; 20. Vacuum pump; 21. Support frame; 22. Pneumatic valve; 23. Second gas pipe connector; 4. Third air pipe connector; 25. Fourth air pipe connector; 26. Fifth air pipe connector; 27. Support base; 28. Cover plate; 29. ​​First connecting pipe; 30. Second connecting pipe; 31. Sixth air pipe connector; 32. Seventh air pipe connector; 33. Control box; 34. Fixing rod; 35. Touch screen; 36. Pass indicator light; 37. Fail indicator light; 38. First connecting plate; 39. Second connecting plate; 40. Third connecting plate; 41. Limit nut; 42. Limit bolt; 43. Turntable; 44. Limit block; 45. Lifting plate. Detailed Implementation

[0027] Please see Figures 1-10In this embodiment of the invention, a four-station negative pressure testing machine includes a testing frame 1 and protective doors 2 hinged to the left and right sides of the testing frame 1. A controller panel 3 is installed inside the testing frame 1, and two gas storage tanks 4 are installed on both the front and rear sides of the controller panel 3 inside the testing frame 1. An operating platform mechanism 5 is provided on the front surface of the testing frame 1. The operating platform mechanism 5 includes an operating platform 9, which is mounted on the front surface of the testing frame 1. A power knob 10 is installed on the surface of the operating platform 9, and a power indicator light 11 is installed on one side of the power knob 10. An emergency stop switch 12 is installed on one side of the testing frame 1. A negative pressure air detection mechanism 6 is provided on the upper surface of the testing frame 1. The negative pressure air detection mechanism 6 includes a negative pressure air detection seat 13, which is installed on the upper surface of the testing frame 1. Two protective covers 14 are symmetrically installed on the upper surface of the negative pressure air detection seat 13. Pressure gauges 15 are installed at both ends of the left and right sides of the negative pressure air detection seat 13. Filter elements 16 are placed on the left and right sides of the negative pressure air detection seat 13, one side of the pressure gauge 15. Pressure sensors 17 are installed through the left and right sides of the negative pressure air detection seat 13, above the filter elements 16. A first air pipe connector is installed at one end of the pressure sensor 17. 18. A fixed bracket 19 is installed on the outside of the pressure sensor 17. The fixed bracket 19 is installed on the inner side surface of the negative pressure gas detection seat 13. Two vacuum pumps 20 are installed at both ends of the inner lower surface of the negative pressure gas detection seat 13. Two support frames 21 are symmetrically installed on the outside of the vacuum pumps 20. The support frames 21 are installed on the inner lower surface of the negative pressure gas detection seat 13. Two pneumatic valves 22 are installed on the inner lower surface of the negative pressure gas detection seat 13 on one side of the two vacuum pumps 20. A second air pipe connector 23 is installed at one end of the pneumatic valve 22, and a third air pipe connector 24 is installed on the upper surface of the pneumatic valve 22. The upper surface of the pneumatic valve 22 is located on the side of the two vacuum pumps 20. A fourth air connector 25 is installed on one side of the three-air connector 24, and a fifth air connector 26 is installed on the upper surface of the pneumatic valve 22 on the side of the fourth air connector 25. A support seat 27 is installed on the lower inner surface of the negative pressure air detector seat 13 on the side of the pneumatic valve 22. A cover plate 28 is installed on the upper end of the support seat 27. A first pair of connecting pipes 29 is installed between the support seat 27 and the cover plate 28. A filter element 16 is connected to one end of the first pair of connecting pipes 29. A second pair of connecting pipes 30 is installed on one end of the first pair of connecting pipes 29. A sixth air connector 31 is installed on one end of the second pair of connecting pipes 30, and a seventh air connector 32 is installed on the upper surface of the second pair of connecting pipes 30.

[0028] The compressed gas stored in the gas tank 4 can be discharged to other equipment for use. The gas tank 4 is connected to the pressure gauge 15 through a gas pipe. The pressure gauge 15 is connected to the vacuum pump 20 through a gas pipe. The vacuum pump 20 is connected to the second gas pipe connector 23 through a gas pipe. The third gas pipe connector 24 is connected to the first gas pipe connector 18 through a gas pipe. The fourth gas pipe connector 25 is connected to the sixth gas pipe connector 31 through a gas pipe. The fifth gas pipe connector 26 is connected to the seventh gas pipe connector 32 through a gas pipe. Each of the four filter elements 16 corresponds to a pressure gauge 15, a pressure sensor 17, a vacuum pump 20, a pneumatic valve 22, and a first connecting pipe 29. During testing, one end of the filter element 16 is connected to the first connecting pipe 29, and the vacuum pump 20 is used to draw air under negative pressure. The negative pressure value of the filter element 16 will be displayed by its corresponding pressure sensor 17.

[0029] exist Figure 1 , Figure 4 and Figure 9 In the middle: The negative pressure air detection mechanism 6 has a control box mechanism 7 inside. The control box mechanism 7 includes a control box 33. A fixing rod 34 is installed at the lower end of the control box 33. The fixing rod 34 moves through two protective covers 14. The lower end of the fixing rod 34 is installed on the lower inner surface of the negative pressure air detection seat 13. A touch screen 35 is installed through the front surface of the control box 33. Two qualified indicator lights 36 are installed on the left and right sides of the control box 33. And unqualified indicator lights 37 are installed on the left and right sides of the control box 33 below the qualified indicator lights 36.

[0030] The control box mechanism 7 has four qualified indicator lights 36 and four unqualified indicator lights 37. Each qualified indicator light 36 and one unqualified indicator light 37 form a group corresponding to one filter element 16. When the airtightness of a filter element 16 is normal, its corresponding qualified indicator light 36 will light up, and conversely, its corresponding unqualified indicator light 37 will light up.

[0031] exist Figure 1 , Figure 4 and Figure 10 In the middle: The upper surface of the testing frame 1 is provided with lifting adjustment mechanisms 8 on both the left and right sides of the negative pressure air detection mechanism 6. The lifting adjustment mechanism 8 has two first connecting plates 38. The lower end of the first connecting plate 38 is equipped with a second connecting plate 39. The second connecting plate 39 is installed on the upper surface of the testing frame 1. The upper end of the first connecting plate 38 is equipped with a third connecting plate 40. The upper surface of the third connecting plate 40 is equipped with a limit nut 41. The internal thread of the limit nut 41 is connected to a limit bolt 42. The limit bolt 42 moves through the third connecting plate 40. The upper end of the limit bolt 42 is equipped with a turntable 43, and the lower end of the limit bolt 42 is rotatably connected to a limit block 44. The two first connecting plates 38 are slidably connected with a lifting plate 45. The limit block 44 is installed on the upper surface of the lifting plate 45. The filter element 16 is movably located on the upper surface of the lifting plate 45.

[0032] Rotating the two turntables 43 can raise and lower the limit bolts 42, thereby adjusting the height of the lifting plate 45 so that the lifting plate 45 can lift the filter element 16.

[0033] exist Figures 1-10 In the middle section: the operating platform mechanism 5, the negative pressure air detection mechanism 6, the control box mechanism 7, and the lifting and adjusting mechanism 8 are all electrically connected to the controller panel 3. The touch screen 35 can start the running program and start the entire detection work.

[0034] The working principle of this invention is as follows: When testing the filter element 16, the operator can insert one filter element 16 into one of the first pair of connecting pipes 29, then rotate the two turntables 43 to raise and lower the limiting bolts 42, adjust the height of the lifting plate 45 to fit the filter element 16, adjust the height of one lifting plate 45, and then adjust the height of the other lifting plate 45. Then, insert the filter elements 16 one by one into the other three first pair of connecting pipes 29. Next, the operator turns on the power knob 10 to turn on the power, and operates the entire running program through the touch screen 35. Since the gas tank 4 is connected to the pressure gauge 15 through a gas pipe, and the pressure gauge 15 is connected to the vacuum pump 20 through a gas pipe, the vacuum pump 2... The air tube 0 is connected to the second air tube connector 23, the third air tube connector 24 is connected to the first air tube connector 18, the fourth air tube connector 25 is connected to the sixth air tube connector 31, and the fifth air tube connector 26 is connected to the seventh air tube connector 32. The vacuum pump 20 will then draw compressed gas into the air storage tank 4, and the filter element 16 will be evacuated. The corresponding air pressure sensor 17 will also display its negative pressure value. When the air tightness of the filter element 16 is normal, its corresponding qualified indicator light 36 will light up; otherwise, its corresponding unqualified indicator light 37 will light up. After each set of filter elements (i.e., four filter elements) is tested, the staff can remove it and replace it with four more for testing.

[0035] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A four-station negative pressure testing machine, comprising a testing frame (1) and protective doors (2) hinged to the left and right sides of the testing frame (1), characterized in that, The inside of the testing frame (1) is equipped with a controller panel (3), and two gas storage tanks (4) are installed on the front and rear sides of the controller panel (3) inside the testing frame (1). The front surface of the testing frame (1) is provided with an operating table mechanism (5), and the upper surface of the testing frame (1) is provided with a negative pressure gas detection mechanism (6). The inside of the negative pressure gas detection mechanism (6) is provided with a control box mechanism (7). The upper surface of the testing frame (1) is provided with lifting adjustment mechanisms (8) on the left and right sides of the negative pressure gas detection mechanism (6). The operating table mechanism (5) includes an operating table (9). The surface of the operating table (9) is equipped with a power knob (10), and the surface of the operating table (9) is equipped with a power indicator light (11) on one side of the power knob (10). The surface of the operating table (9) is equipped with an emergency stop switch (12) on one side of the power indicator light (11). The negative pressure gas detection mechanism (6) includes a negative pressure gas detection seat (13). Two protective covers (14) are symmetrically installed on the upper surface of the negative pressure gas detection seat (13). Pressure gauges (15) are installed at both ends of the left and right sides of the negative pressure gas detection seat (13). Filter elements (16) are placed on both sides of the negative pressure gas detection seat (13) on the side of the pressure gauges (15). Pressure sensors (17) are installed through the left and right sides of the negative pressure gas detection seat (13) above the filter elements (16). A first air pipe connector (18) is installed at one end of the pressure sensor (17). A fixed bracket (19) is installed on the outside of the pressure sensor (17). Two vacuum pumps (20) are installed at both ends of the lower inner surface of the negative pressure gas detection seat (13). Two support frames (21) are symmetrically installed on the outside of the vacuum pumps (20). Two support frames (21) are installed on the lower inner surface of the negative pressure gas detection seat (13) on the side of the two vacuum pumps (20). A pneumatic valve (22) is provided with a second air pipe connector (23) installed at one end of the pneumatic valve (22) and a third air pipe connector (24) installed on the upper surface of the pneumatic valve (22). A fourth air pipe connector (25) is installed on the upper surface of the pneumatic valve (22) on one side of the third air pipe connector (24) and a fifth air pipe connector (26) is installed on the upper surface of the pneumatic valve (22) on one side of the fourth air pipe connector (25). A support seat (27) is installed on the lower inner surface of the negative pressure air detector seat (13) on one side of the pneumatic valve (22). A cover plate (28) is installed on the upper end of the support seat (27). A first pair of connecting pipes (29) is installed between the support seat (27) and the cover plate (28). A second pair of connecting pipes (30) is installed at one end of the first pair of connecting pipes (29). A sixth air pipe connector (31) is installed at one end of the second pair of connecting pipes (30) and a seventh air pipe connector (32) is installed on the upper surface of the second pair of connecting pipes (30).

2. The four-station negative pressure testing machine according to claim 1, characterized in that, The control box mechanism (7) includes a control box (33), a fixing rod (34) is installed at the lower end of the control box (33), and a touch screen (35) is installed through the front surface of the control box (33). Two qualified indicator lights (36) are installed on the left and right sides of the control box (33), and unqualified indicator lights (37) are installed on the left and right sides of the control box (33) below the qualified indicator lights (36).

3. The four-station negative pressure testing machine according to claim 1, characterized in that, The lifting adjustment mechanism (8) has two first connecting plates (38), a second connecting plate (39) is installed at the lower end of the first connecting plate (38), and a third connecting plate (40) is installed at the upper end of the first connecting plate (38). A limit nut (41) is installed on the upper surface of the third connecting plate (40), and a limit bolt (42) is connected to the internal thread of the limit nut (41). A turntable (43) is installed at the upper end of the limit bolt (42), and a limit block (44) is rotatably connected to the lower end of the limit bolt (42). A lifting plate (45) is slidably connected between the two first connecting plates (38).

4. The four-station negative pressure testing machine according to claim 1, characterized in that, The operating console mechanism (5), negative pressure air detection mechanism (6), control box mechanism (7) and lifting adjustment mechanism (8) are all electrically connected to the controller panel (3), and the operating console (9) is installed on the front surface of the detection frame (1).

5. A four-station negative pressure testing machine according to claim 1, characterized in that, The negative pressure gas detector (13) is installed on the upper surface of the testing frame (1), and the fixed bracket (19) is installed on the inner side surface of the negative pressure gas detector (13).

6. A four-station negative pressure testing machine according to claim 1, characterized in that, The support frame (21) is installed on the inner lower surface of the negative pressure gas detector (13), and the filter element (16) is connected to one end of the first pair of connecting pipes (29).

7. A four-station negative pressure testing machine according to claim 2, characterized in that, The fixing rod (34) moves through the two protective covers (14), and the lower end of the fixing rod (34) is installed on the inner lower surface of the negative pressure gas detector (13).

8. A four-station negative pressure testing machine according to claim 3, characterized in that, The second connecting plate (39) is installed on the upper surface of the testing frame (1), the limiting bolt (42) moves through the third connecting plate (40), the limiting block (44) is installed on the upper surface of the lifting plate (45), and the filter element (16) moves on the upper surface of the lifting plate (45).

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