Rail train vacuum dejectas collection system part detection test bench

Abstract

The invention belongs to the technical field of train vacuum dejectas collecting systems, and discloses a rail train vacuum dejectas collecting system part detection test bed which comprises a rack, an exhaust pipe is fixedly connected to the rack, an exhaust pump is fixedly connected to the middle of the exhaust pipe, and the exhaust pipe penetrates to the upper end of the rack. The upper end of the rack is fixedly connected with a sealing seat and a transparent water storage barrel, one end of the exhaust pipe penetrates through the sealing seat, the other end of the exhaust pipe penetrates into the transparent water storage barrel, and the exhaust pipe and the transparent water storage barrel are in a sealed state. According to the invention, the frame is clamped on the sealing seat, then the sealing cover covers the tubular part, the air pump is used for pumping air into the tubular part from the sealing seat through the air pumping pipe, the air is pumped into the transparent water storage cylinder and floats upwards into the transparent air collection graduated tube, and the transparent air collection graduated tube is used for collecting the air and quantifying the time; and the gas quantity in the transparent gas collection graduated tube is observed, so that the sealing performance of the tubular component is conveniently judged.

Description

Technical Field

[0001] The invention belongs to the technical field of train vacuum feces collection systems, and in particular relates to a test bench for detecting parts of a rail train vacuum feces collection system. Background Art

[0002] The train vacuum feces collection system has relatively high requirements for pipeline sealing. After the pipeline components are produced, the sealing of the pipeline needs to be tested to eliminate unqualified products.

[0003] Even if the formed pipe leaks, the amount of gas is very small. The conventional method of inflating and then observing the bubbles is very small and difficult to judge accurately. The use of a cylindrical structure to collect gas is prone to residual gas before the cylindrical structure is put into water, and resetting is also more troublesome, resulting in the problem of troublesome sealing testing of the tubular components of the conventional rail train vacuum feces collection system.

[0004] Therefore, we propose a rail train vacuum feces collection system parts inspection test bench to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that it is troublesome to test the sealing performance of tubular components of conventional rail train vacuum feces collection systems, and to propose a rail train vacuum feces collection system component testing bench.

[0006] In order to achieve the above-mentioned objectives, the present invention adopts the following technical scheme: a railway train vacuum feces collection system component inspection test bench, comprising a frame, a vacuum pipe is fixedly connected to the frame, a vacuum pump is fixedly connected to the middle of the vacuum pipe, the vacuum pipe extends to the upper end of the frame, a sealing seat and a transparent water storage cylinder are fixedly connected to the upper end of the frame, one end of the vacuum pipe extends through the sealing seat, the other end of the vacuum pipe extends to the interior of the transparent water storage cylinder, and the vacuum pipe and the transparent water storage cylinder are in a sealed state, a sealing cover and a spiral lock are provided on the upper side of the sealing seat, the spiral lock is movably mounted on the sealing cover, a transparent gas collecting scale tube and a sealing plug are provided inside the transparent water storage cylinder, the outside of the transparent gas collecting scale tube is fixedly connected to the inner end of the waist of the transparent water storage cylinder, and the outer end of the sealing plug is fixedly connected to the upper inner end of the transparent water storage cylinder.

[0007] Clamp the frame onto the sealing seat, and then cover the sealing cover onto the tubular component. Use a vacuum pump to extract air from the sealing seat into the tubular component through a vacuum pipe, and draw the gas into a transparent water storage cylinder, so that the gas floats upward into a transparent gas collecting calibrated tube. Use the transparent gas collecting calibrated tube to collect the gas, quantify the time, and observe the amount of gas in the transparent gas collecting calibrated tube, so as to conveniently determine the sealing performance of the tubular component.

[0008] Preferably, a pressure gauge is fixedly connected to the exhaust pipe.

[0009] Using the pressure gauge to observe the pressure, first open the sealing plug. When the negative pressure in the exhaust pipe reaches the upper limit, loosen the sealing plug. The sealing plug is sealed on the transparent gas collecting scale tube, which makes it easy to judge whether the gas inside the tubular component has been exhausted.

[0010] Preferably, the sealing seat includes a reinforcement block, an elastic cover and a leather seat, the upper end of the leather seat is hollowed out to provide an air extraction port, the lower end of the reinforcement block is fixedly connected to the upper end of the leather seat, the elastic cover is in active contact with the leather seat, and the elastic cover is fixedly connected to the reinforcement block.

[0011] The tubular component is covered outside the elastic cover along the upper end of the elastic cover, and the elastic force of the elastic cover is used to act on the tubular component to keep the tubular component standing. The lower part of the tubular component is sealed with a leather seat to facilitate testing of bent tubular components.

[0012] Preferably, the sealing cover comprises a cover body, a connecting block, a first handle and a sealing ring, the upper end of the cover body is hollowed out to provide a rotating hole, the connecting block is fixedly connected to the upper end of the cover body, the first handle is fixedly connected to an end of the connecting block facing away from the cover body, the sealing ring is fixedly connected to the upper end of the cover body, and the rotating hole is located on the inner side of the sealing ring.

[0013] The sealing ring is used to seal the gap between the spiral lock buckle and the sealing cover, thereby ensuring the sealing performance of the sealing cover to the top of the tubular component.

[0014] Preferably, the spiral lock includes a spring, a first gear, a second gear, a lever, a second handle, a rotating shaft and a rotating frame, one end of the spring is fixedly connected to the rotating frame, the first gear is fixedly connected to the upper end of the rotating shaft, the first gear and the second gear are meshed with each other, the lever is fixedly connected to the upper part of the second gear, the second handle fixes one end of the lever facing away from the second gear, and the rotating frame slides through the lower part of the rotating shaft.

[0015] Hold your hands outside the second handle and the first handle, bring the second handle closer to the first handle, use the second handle to drive the lever to rotate the second gear, use the second gear to drive the first gear to reverse, use the first gear to drive the shaft to rotate the turntable, tighten the spring through the turntable, use the contraction force of the spring to slide the turntable to the center of the shaft, thereby reducing the range of the spring, put the spring into the inner side of the upper part of the tubular component, then release the second handle, use the elastic force of the spring to restore outward, so that the spring is pressed against the inner wall of the upper part of the tubular component, so that the sealing cover remains sealed on the tubular component, and it is convenient to seal the curved pipe.

[0016] Preferably, the transparent gas collecting calibrated tube comprises a transparent gas collecting tube and a first connecting piece, and the transparent gas collecting tube is fixedly connected to the first connecting piece.

[0017] When the gas floats up, it is collected through a transparent gas collecting pipe, and the gas inside the transparent gas collecting pipe is observed through the transparent water storage cylinder and the transparent gas collecting pipe, so as to conveniently judge the leakage amount of the tubular component.

[0018] Preferably, the transparent gas collecting calibrated tube further comprises a gas collecting hood, and the transparent gas collecting tube is fixedly connected to the upper end of the gas collecting hood.

[0019] Use a gas collecting hood to increase the gas collecting range of the transparent gas collecting pipe.

[0020] Preferably, the sealing plug includes a second connecting piece, a guide sleeve, a sliding rod and a plug body, the second connecting piece is fixedly connected to the outside of the guide sleeve, the sliding rod slides through the guide sleeve, and the plug body is fixedly connected to the lower end of the sliding rod.

[0021] When the negative pressure of the pressure gauge is not too high, pull the slide bar upwards to drive the plug body upwards through the slide bar, so that the plug body is separated from the transparent gas collecting pipe, and the gas is discharged upwards through the transparent gas collecting pipe. When the negative pressure of the pressure gauge reaches the standard, press the slide bar downwards to re-insert the plug body into the transparent gas collecting pipe, which is convenient for correcting the initial gas collecting state of the transparent gas collecting pipe.

[0022] Preferably, the sealing plug comprises a pull button, and the pull button is fixedly connected to the upper end of the sliding rod.

[0023] The pull knob is used to increase the hand-pinch range, making it easier to manually operate the slide bar to move upward.

[0024] Preferably, the sealing plug also includes a tension spring, which is movably sleeved on the outside of the slide rod, the upper end of the tension spring is fixedly connected to the lower end of the pull button, and the lower end of the tension spring is fixedly connected to the upper end of the guide sleeve.

[0025] A tension spring is used to provide a downward restoring force for the slide rod through a pull button, so that the plug body can maintain a seal with the transparent gas collecting pipe under normal conditions.

[0026] In summary, the technical effects and advantages of the present invention are as follows: 1. The frame is clamped on the sealing seat, and then the sealing cover is covered on the tubular component. A vacuum pump is used to extract air from the sealing seat into the tubular component through a vacuum pipe, and the gas is drawn into a transparent water storage cylinder, so that the gas floats upward into a transparent gas collecting calibrated tube, and the gas is collected using a transparent gas collecting calibrated tube. The time is quantified, and the amount of gas in the transparent gas collecting calibrated tube is observed, so as to facilitate the determination of the sealing of the tubular component.

[0027] 2. Use the pressure gauge to observe the pressure. First open the sealing plug. When the negative pressure in the exhaust pipe reaches the upper limit, loosen the sealing plug. The sealing plug is sealed on the transparent gas collecting scale tube to facilitate judgment of whether the gas inside the tubular component has been exhausted.

[0028] 3. Cover the tubular component along the upper end of the elastic cover and put it outside the elastic cover. Use the elastic force of the elastic cover to act on the tubular component to keep the tubular component standing. Use the leather seat to seal the lower part of the tubular component to facilitate testing of bent tubular components.

[0029] 4. Hold your hands outside the second handle and the first handle, bring the second handle closer to the first handle, use the second handle to drive the lever to rotate the second gear, use the second gear to drive the first gear to reverse, use the first gear to drive the shaft to rotate the turntable, tighten the spring through the turntable, use the contraction force of the spring to slide the turntable to the center of the shaft, thereby reducing the range of the spring, put the spring into the inner side of the upper part of the tubular component, then release the second handle, use the elastic force of the spring to restore outward, so that the spring is pressed against the inner wall of the upper part of the tubular component, so that the sealing cover remains sealed on the tubular component, and it is convenient to seal the curved pipe.

[0030] 5. When the gas floats up, collect the gas through the transparent gas collecting pipe, and observe the gas inside the transparent gas collecting pipe through the transparent water storage cylinder and the transparent gas collecting pipe, so as to judge the leakage amount of the tubular parts.

[0031] 6. When the negative pressure of the pressure gauge is not too high, pull the slide bar upward to drive the plug body upward through the slide bar, so that the plug body is separated from the transparent gas collecting pipe, and the gas is discharged upward through the transparent gas collecting pipe. When the negative pressure of the pressure gauge reaches the standard, press the slide bar downward to re-insert the plug body into the transparent gas collecting pipe, which is convenient for correcting the initial gas collecting state of the transparent gas collecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the sealing seat structure of the present invention;

[0034] Figure 3 It is a schematic diagram of the sealing cover structure of the present invention;

[0035] Figure 4 It is a schematic diagram of the spiral lock structure of the present invention;

[0036] Figure 5 This is a schematic diagram of the structure of the transparent gas collecting graduated tube of the present invention;

[0037] Figure 6 It is a schematic diagram of the sealing plug structure of the present invention.

[0038] In the figure: 1. frame; 2. sealing seat; 3. sealing cover; 4. spiral lock; 5. transparent gas collecting scale tube; 6. sealing plug; 7. exhaust pipe; 8. pressure gauge; 9. exhaust pump; 10. transparent water storage cylinder; 11. tubular component; 21. reinforcement block; 22. elastic cover; 23. leather seat; 24. exhaust port; 31. cover body; 32. connecting block; 33. first grip; 34. sealing ring; 35. rotating hole; 41. spring; 42. first gear; 43. second gear; 44. lever; 45. second grip; 46. rotating shaft; 47. rotating frame; 51. transparent gas collecting tube; 52. first connecting plate; 53. gas collecting cover; 61. pull button; 62. tension spring; 63. second connecting plate; 64. guide sleeve; 65. slide rod; 66. plug body. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] See also Figure 1 A test bench for detecting parts of a vacuum feces collection system of a railway train comprises a frame 1, a suction pipe 7 is fixedly connected to the frame 1, a suction pump 9 is fixedly connected to the middle of the suction pipe 7, the suction pipe 7 penetrates to the upper end of the frame 1, a sealing seat 2 and a transparent water storage cylinder 10 are fixedly connected to the upper end of the frame 1, one end of the suction pipe 7 penetrates the sealing seat 2, the other end of the suction pipe 7 penetrates to the inside of the transparent water storage cylinder 10, and the suction pipe 7 and the transparent water storage cylinder 10 are in a sealed state, and the upper end of the sealing seat 2 is placed There is a tubular component 11, a sealing cover 3 and a spiral lock 4 are provided on the upper side of the sealing seat 2, the sealing cover 3 is sealed on the tubular component 11, the lower part of the spiral lock 4 is pressed and fixed on the upper part of the tubular component 11, and the spiral lock 4 is movably installed on the sealing cover 3. A transparent gas collecting scale tube 5 and a sealing plug 6 are provided inside the transparent water storage cylinder 10, the outer part of the transparent gas collecting scale tube 5 is fixedly connected to the inner end of the waist of the transparent water storage cylinder 10, and the outer end of the sealing plug 6 is fixedly connected to the upper inner end of the transparent water storage cylinder 10. The frame 1 is clamped on the sealing seat 2, and the sealing cover 3 is covered on the tubular component 11. The air pump 9 is used to extract air from the sealing seat 2 to the tubular component 11 through the air extraction pipe 7, and the gas is extracted into the transparent water storage cylinder 10, so that the gas floats upward into the transparent gas collecting scale tube 5, and the transparent gas collecting scale tube 5 is used to collect the gas, and the time is quantitatively measured. The amount of gas in the transparent gas collecting scale tube 5 is observed to determine the sealing performance of the tubular component 11.

[0041] See also Figure 1 A pressure gauge 8 is also fixedly connected to the air extraction pipe 7. The pressure gauge 8 is used to observe the pressure, and the sealing plug 6 is opened. When the negative pressure in the air extraction pipe 7 reaches the upper limit, the sealing plug 6 is loosened and sealed on the transparent gas collecting graduated tube 5 through the sealing plug 6.

[0042] See also Figure 1 and 2 The sealing seat 2 includes a reinforcement block 21, an elastic cover 22 and a leather seat 23. The upper end of the leather seat 23 is hollowed out to open an air extraction port 24. The upper part of the air extraction pipe 7 passes through the air extraction port 24. The tubular component 11 is sleeved outside the elastic cover 22. The leather seat 23 is fixedly connected to the upper end of the frame 1. The lower end of the reinforcement block 21 is fixedly connected to the upper end of the leather seat 23. The elastic cover 22 is in active contact with the leather seat 23. The elastic cover 22 is fixedly connected to the reinforcement block 21. The tubular component 11 is covered outside the elastic cover 22 along the upper end of the elastic cover 22, and the elastic force of the elastic cover 22 is used to act on the tubular component 11 to keep the tubular component 11 standing. The lower part of the tubular component 11 is sealed by the leather seat 23.

[0043] See also Figure 1 and 3 The sealing cover 3 includes a cover body 31, a connecting block 32, a first handle 33 and a sealing ring 34. The upper end of the cover body 31 is hollowed out to open a rotating hole 35. The lower end of the cover body 31 is in sealing contact with the tubular component 11. The connecting block 32 is fixedly connected to the upper end of the cover body 31. The first handle 33 is fixedly connected to the end of the connecting block 32 facing away from the cover body 31. The sealing ring 34 is fixedly connected to the upper end of the cover body 31. The rotating hole 35 is located on the inner side of the sealing ring 34. The sealing ring 34 is used to seal the gap between the spiral lock buckle 4 and the sealing cover 3.

[0044] See also Figure 1 , 34, the spiral lock 4 includes a spring 41, a first gear 42, a second gear 43, a lever 44, a second handle 45, a rotating shaft 46 and a rotating frame 47. The first gear 42 is movably sealed and pressed on the sealing ring 34. The second gear 43 is rotatably connected to the upper part of the cover body 31. The rotating shaft 46 is rotatably installed inside the rotating hole 35, and the rotating shaft 46 passes through the rotating hole 35. The rotating frame 47 is located on the lower side of the cover body 31, and the rotating frame 47 does not contact the cover body 31. One end of the spring 41 is fixedly connected to the rotating frame 47, and the end of the spring 41 facing away from the rotating frame 47 is fixedly connected to the cover body 31. The first gear 42 is fixedly connected to the upper end of the rotating shaft 46, the first gear 42 and the second gear 43 are meshed with each other, the lever 44 is fixedly connected to the upper part of the second gear 43, the second handle 45 fixes the end of the lever 44 facing away from the second gear 43, and the rotating frame 47 slides through the lower part of the rotating shaft 46. Hold your hand outside the second handle 45 and the first handle 33, bring the second handle 45 closer to the first handle 33, use the second handle 45 to drive the lever 44 to rotate the second gear 43, drive the first gear 42 to reverse, use the first gear 42 to drive the shaft 46 to rotate the rotating frame 47, tighten the mainspring 41 through the rotating frame 47, use the contraction force of the mainspring 41 to make the rotating frame 47 slide to the center of the rotating shaft 46, so as to reduce the range of the mainspring 41, put the mainspring 41 into the inner side of the upper part of the tubular component 11, then release the second handle 45, use the elastic force of the mainspring 41 to restore outwards, so that the mainspring 41 is pressed against the inner wall of the upper part of the tubular component 11.

[0045] See also Figure 1 and 5 The transparent gas collecting calibrated tube 5 includes a transparent gas collecting tube 51 and a first connecting piece 52. The first connecting piece 52 is evenly and fixedly connected to the inside of the transparent water storage cylinder 10. The transparent gas collecting tube 51 is fixedly connected to the first connecting piece 52. When the gas floats up, the gas is collected by the transparent gas collecting tube 51, and the gas inside the transparent gas collecting tube 51 is observed through the transparent water storage cylinder 10 and the transparent gas collecting tube 51.

[0046] See also Figure 1 and 5 The transparent gas collecting scale tube 5 also includes a gas collecting cover 53, which covers the upper exhaust port of the exhaust pipe 7, and the transparent gas collecting pipe 51 is fixedly connected to the upper end of the gas collecting cover 53. The gas collecting cover 53 is used to increase the gas collecting range of the transparent gas collecting pipe 51.

[0047] See also Figure 1 , 56, the sealing plug 6 includes a second connecting piece 63, a guide sleeve 64, a slide bar 65 and a plug body 66. The second connecting piece 63 is fixedly connected to the outside of the guide sleeve 64, and one end of the second connecting piece 63 facing away from the guide sleeve 64 is fixedly connected to the transparent water storage cylinder 10. The plug body 66 is sealed and plugged in the upper end of the transparent gas collecting pipe 51. The slide bar 65 slides through the guide sleeve 64, and the plug body 66 is fixedly connected to the lower end of the slide bar 65. When the negative pressure of the pressure gauge 8 is not too high, the slide bar 65 is pulled upward, and the plug body 66 is driven to move upward by the slide bar 65, so that the plug body 66 is separated from the transparent gas collecting pipe 51, and the gas is discharged upward through the transparent gas collecting pipe 51. When the negative pressure of the pressure gauge 8 reaches the standard, the slide bar 65 is pressed downward to re-plug the plug body 66 on the transparent gas collecting pipe 51.

[0048] See also Figure 6 The sealing plug 6 comprises a pull button 61, and the pull button 61 is fixedly connected to the upper end of the slide bar 65. The pull button 61 is used to increase the hand-pinch range.

[0049] See also Figure 5 and 6 The sealing plug 6 further includes a tension spring 62, which is movably sleeved on the outer side of the slide bar 65, the upper end of the tension spring 62 is fixedly connected to the lower end of the pull button 61, and the lower end of the tension spring 62 is fixedly connected to the upper end of the guide sleeve 64. The tension spring 62 is used to provide a downward restoring force for the slide bar 65 through the pull button 61.

[0050] Working principle: the tubular component 11 is covered along the upper end of the elastic cover 22 to the outside of the elastic cover 22, the elastic force of the elastic cover 22 is used to act on the tubular component 11, so that the tubular component 11 remains standing, the leather seat 23 is used to seal the lower part of the tubular component 11, the hand is held outside the second grip 45 and the first grip 33, the second grip 45 is moved closer to the first grip 33, the second grip 45 drives the lever 44 to rotate the second gear 43, the first gear 42 is driven to reverse through the second gear 43, the first gear 42 drives the shaft 46 to rotate the rotating frame 47, the spring 41 is tightened through the rotating frame 47, the contraction force of the spring 41 is used to make the rotating frame 47 slide toward the center of the rotating shaft 46, so that the range of the spring 41 is reduced, and the spring 41 is put into the tubular component 1 1, and then release the second grip 45, and use the elastic force of the spring 41 to recover outwards, so that the spring 41 is pressed against the inner wall of the upper part of the tubular component 11. When the negative pressure of the pressure gauge 8 is not too high, pull the slide bar 65 upward, and drive the plug 66 to move upward through the slide bar 65, so that the plug 66 is separated from the transparent gas collecting tube 51, and the gas passes through the transparent gas collecting tube 51 and is discharged upward. When the negative pressure of the pressure gauge 8 reaches the standard, press the slide bar 65 downward to plug the plug 66 into the transparent gas collecting tube 51 again, and use the air pump 9 to extract air from the tubular component 11 through the air extraction pipe 7, and send the gas into the transparent water storage cylinder 10. When the gas floats up, it is collected through the transparent gas collecting tube 51, and the gas inside the transparent gas collecting tube 51 is observed through the transparent water storage cylinder 10 and the transparent gas collecting tube 51.

[0051] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0052] The description briefly mentions the application direction of the present invention for the prior art known to those skilled in the art and without making changes, which is combined with the present invention to form a complete technology; the method avoids over-popularizing the technology well known to those skilled in the art to assist them in quickly understanding the main content of the present invention.

Claims

1. A test bench for parts of a railway train vacuum feces collection system, characterized by: The invention comprises a frame (1), the frame (1) is fixedly connected to an air extraction pipe (7), the middle part of the air extraction pipe (7) is fixedly connected to an air extraction pump (9), the air extraction pipe (7) penetrates to the upper end of the frame (1), the upper end of the frame (1) is fixedly connected to a sealing seat (2) and a transparent water storage cylinder (10), one end of the air extraction pipe (7) penetrates to the sealing seat (2), the other end of the air extraction pipe (7) penetrates to the inside of the transparent water storage cylinder (10), and the air extraction pipe (7) and the transparent water storage cylinder (10) are connected. The water cylinder (10) is in a sealed state. A sealing cover (3) and a spiral lock (4) are provided on the upper side of the sealing seat (2). The spiral lock (4) is movably mounted on the sealing cover (3). A transparent gas collecting scale tube (5) and a sealing plug (6) are provided inside the transparent water storage cylinder (10). The outside of the transparent gas collecting scale tube (5) is fixedly connected to the inner end of the waist of the transparent water storage cylinder (10). The outer end of the sealing plug (6) is fixedly connected to the upper inner end of the transparent water storage cylinder (10).

2. A rail vehicle vacuum feces collection system component inspection test bench according to claim 1, characterized in that: The air extraction pipe (7) is also fixedly connected to a pressure gauge (8).

3. A rail vehicle vacuum feces collection system component inspection test bench according to claim 1, characterized in that: The sealing seat (2) comprises a reinforcing block (21), an elastic cover (22) and a leather seat (23); the upper end of the leather seat (23) is hollowed out to provide an air extraction port (24); the lower end of the reinforcing block (21) is fixedly connected to the upper end of the leather seat (23); the elastic cover (22) is in active contact with the leather seat (23); and the elastic cover (22) is fixedly connected to the reinforcing block (21).

4. A rail vehicle vacuum feces collection system component inspection test bench according to claim 1, characterized in that: The sealing cover (3) comprises a cover body (31), a connecting block (32), a first handle (33) and a sealing ring (34); the upper end of the cover body (31) is hollowed out to form a rotating hole (35); the connecting block (32) is fixedly connected to the upper end of the cover body (31); the first handle (33) is fixedly connected to an end of the connecting block (32) facing away from the cover body (31); the sealing ring (34) is fixedly connected to the upper end of the cover body (31); and the rotating hole (35) is located on the inner side of the sealing ring (34).

5. The rail vehicle vacuum feces collection system component inspection test bench according to claim 1, characterized in that: The spiral lock (4) comprises a spring (41), a first gear (42), a second gear (43), a lever (44), a second handle (45), a rotating shaft (46) and a rotating frame (47), one end of the spring (41) is fixedly connected to the rotating frame (47), the first gear (42) is fixedly connected to the upper end of the rotating shaft (46), the first gear (42) and the second gear (43) are meshed with each other, the lever (44) is fixedly connected to the upper part of the second gear (43), the second handle (45) fixes one end of the lever (44) facing away from the second gear (43), and the rotating frame (47) slides through the lower part of the rotating shaft (46).

6. A rail vehicle vacuum feces collection system component inspection test bench according to claim 1, characterized in that: The transparent gas collecting calibrated tube (5) comprises a transparent gas collecting tube (51) and a first connecting piece (52), and the transparent gas collecting tube (51) is fixedly connected to the first connecting piece (52).

7. A test bench for detecting components of a railway train vacuum feces collection system according to claim 6, characterized in that: The transparent gas collecting calibrated tube (5) further comprises a gas collecting hood (53), and the transparent gas collecting tube (51) is fixedly connected to the upper end of the gas collecting hood (53).

8. The rail vehicle vacuum feces collection system component testing bench according to claim 1 is characterized by: The sealing plug (6) comprises a second connecting piece (63), a guide sleeve (64), a sliding rod (65) and a plug body (66), wherein the second connecting piece (63) is fixedly connected to the outside of the guide sleeve (64), the sliding rod (65) slides through the guide sleeve (64), and the plug body (66) is fixedly connected to the lower end of the sliding rod (65).

9. A test bench for detecting components of a railway train vacuum feces collection system according to claim 8, characterized in that: The sealing plug (6) comprises a pull button (61), and the pull button (61) is fixedly connected to the upper end of the sliding rod (65).

10. A test bench for parts of a railway train vacuum feces collection system according to claim 9, characterized in that: The sealing plug (6) further comprises a tension spring (62), wherein the tension spring (62) is movably sleeved on the outer side of the slide rod (65), the upper end of the tension spring (62) is fixedly connected to the lower end of the pull button (61), and the lower end of the tension spring (62) is fixedly connected to the upper end of the guide sleeve (64).

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