A sealing detection device for a gear pump

Abstract

The application discloses a sealing detection device of a gear pump and relates to the technical field of sealing detection equipment. The sealing detection device comprises a supporting seat, a first detection assembly, a pressure connection assembly and a second detection assembly. The gear pump is first pressure-connected to the gasket through the pressure connection assembly, then gas is delivered into the sealing cavity of the gear pump through the first detection assembly to reach a set pressure, if the pressure displayed by the first detection assembly becomes smaller, it is indicated that the gear pump leaks, then the water tank is driven to move upward through the driving piece, the part to be detected of the gear pump is completely immersed, and then the part to be detected of the gear pump is observed through the observation assembly to find out where bubbles are generated. Through the above structure, whether the gear pump leaks can be detected, and the leaking position of the gear pump can be observed through the observation assembly, so that the specific leaking position of the gear pump is easy to find out, and the subsequent maintenance work can be facilitated.

Description

Technical Field

[0001] This invention relates to the field of sealing testing equipment technology, specifically a sealing testing device for a gear pump. Background Technology

[0002] A gear pump is a rotary pump that transports or pressurizes liquids by relying on the change and movement of the working volume formed between the pump cylinder and meshing gears. It consists of two gears, a pump body, and front and rear covers, forming two enclosed spaces. When the gears rotate, the volume of the space on the disengaged side increases, creating a vacuum that draws in liquid. Conversely, the volume of the space on the meshing side decreases, forcing the liquid into the pipeline. The suction and discharge chambers are separated by the meshing line of the two gears. The pressure at the discharge port of a gear pump depends entirely on the resistance at the pump outlet.

[0003] However, existing sealing detection devices can only detect whether the gear pump is leaking, but it is not easy to observe the location of the leak. This makes it difficult to find the specific location of the leak and hinders subsequent maintenance work.

[0004] Based on the above, the present invention proposes a gear pump sealing performance testing device, which can effectively solve the above problems. Summary of the Invention

[0005] In view of the current situation of the prior art, the present invention provides a gear pump sealing detection device, which can effectively solve the problem that the prior art can only detect whether the gear pump is leaking, but it is not easy to observe the location of the leak, which makes it difficult to find the specific location of the leak and is not conducive to subsequent maintenance work.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A gear pump sealing performance testing device, comprising:

[0008] Support base.

[0009] The first detection component includes a support plate, a gasket, an air supply pipe, and a first detection element. The support plate is disposed on the support base and has a snap-fit ​​groove on its top. The side wall of the support plate has an air inlet, the top has an air outlet, and an air supply channel is formed inside. The air inlet and the air outlet are respectively connected to the air supply channel. The gasket is disposed in the snap-fit ​​groove to seal the end of the gear pump, so as to form a sealed cavity inside the gear pump. One end of the air supply pipe is connected to the air inlet, and the other end is connected to the first detection element. The first detection element is used to supply gas into the sealed cavity of the gear pump to achieve a set pressure.

[0010] A crimping assembly is disposed on the support base, and the crimping assembly has a first state of crimping the gear pump to the washer and a second state of releasing the gear pump from the washer.

[0011] The second detection component includes a drive unit, a water tank, and an observation component. The drive unit is located on the support base, and the water tank is located below the drive unit and below the support plate. The top of the water tank is open and a water storage cavity is formed inside. A notch is provided on the side wall of the water tank. The observation component is sealed in the notch for observing the part of the gear pump to be tested. The drive unit is used to drive the water tank to move up and down so as to completely immerse the part of the gear pump to be tested.

[0012] As a further description of the above technical solution:

[0013] The observation assembly includes a frame, a base plate, a first water-blocking cloth, a second water-blocking cloth, and an observation component. One end of the frame is sealed to the observation port, and the other end extends into the water tank. The base plate is sealed at the bottom of the frame. The first water-blocking cloth is slidably sealed on the left side of the frame, and the second water-blocking cloth is slidably sealed on the right side of the frame. One end of the observation component is sealed to the first water-blocking cloth, the other end is sealed to the second water-blocking cloth, and the bottom end is slidably sealed to the base plate. An observation area is formed by the base plate, the first water-blocking cloth, the second water-blocking cloth, and the observation component. The observation component is used to observe the part of the gear pump to be tested.

[0014] As a further description of the above technical solution:

[0015] Both the first and second water-blocking cloths are extendable and retractable, and are used to adjust the distance between the observation piece and the part of the gear pump to be tested.

[0016] As a further description of the above technical solution:

[0017] The observation device includes a third water-blocking cloth and a transparent plate. One end of the third water-blocking cloth is sealed to the first water-blocking cloth, the other end is sealed to the second water-blocking cloth, and the bottom end is slidably sealed to the base plate. The third water-blocking cloth has at least three observation windows, and each observation window is sealed with a transparent plate. The transparent plate is transparent. The base plate, the first water-blocking cloth, the second water-blocking cloth, and the third water-blocking cloth form an observation area.

[0018] As a further description of the above technical solution:

[0019] The third water-blocking cloth includes a sliding member and a first cloth body. The sliding member is slidably sealed on the frame. One end of the first cloth body is sealed to the first water-blocking cloth, the other end is sealed to the second water-blocking cloth, and the bottom end is slidably sealed to the sliding member. The positions of at least three observation windows relative to the part of the gear pump to be tested can be adjusted respectively.

[0020] As a further description of the above technical solution:

[0021] The sliding trajectory of the first fabric body and the sliding member is a straight line, a broken line, a curve, or an arc.

[0022] As a further description of the above technical solution:

[0023] The observation device also includes a scale, which is set vertically on the transparent plate.

[0024] As a further description of the above technical solution:

[0025] The observation device also includes a scale needle, which is located on the scale and used to mark the scale that needs to be recorded.

[0026] As a further description of the above technical solution:

[0027] The first detection component further includes a positioning element, one end of which is fixedly connected to the support plate, and the other end of which passes through the washer and extends out of the washer.

[0028] As a further description of the above technical solution:

[0029] Two positioning elements are provided along the circumference of the washer.

[0030] This invention provides a sealing performance testing device for a gear pump. It has the following advantages:

[0031] The gear pump sealing detection device provided by this invention, by setting up the support base, first detection component, crimping component, and second detection component, etc., in practical application, firstly, the gear pump is crimped to the gasket by the crimping component, and then gas is supplied to the sealing cavity of the gear pump through the first detection component to reach the set pressure. If the pressure displayed by the first detection component does not change, it means that the gear pump is not leaking and is qualified. If the pressure displayed by the first detection component decreases, it means that the gear pump is leaking. Then, the driving component drives the water tank to move upward, completely submerging the part of the gear pump to be tested. Then, the observation component observes where the air bubbles are coming out of the part of the gear pump to be tested. By setting up the above structure, this invention can not only detect whether the gear pump is leaking, but also observe the location of the leak through the observation component, making it easy to find the specific location of the gear pump leak and facilitating subsequent maintenance work. Attached Figure Description

[0032] Figure 1 This is a three-dimensional structural diagram of the gear pump sealing performance testing device proposed in this invention. Figure 1 ;

[0033] Figure 2 This is a three-dimensional structural diagram of the gear pump sealing performance testing device proposed in this invention. Figure 2 ;

[0034] Figure 3 for Figure 2 A partially enlarged structural diagram of part A in the middle;

[0035] Figure 4 This is a three-dimensional structural diagram of the gear pump sealing performance testing device proposed in this invention. Figure 3 ;

[0036] Figure 5 for Figure 4 A partially enlarged structural diagram of section B;

[0037] Figure 6 for Figure 5 A partially enlarged structural diagram of section D;

[0038] Figure 7 for Figure 4 A top view of the structure shown;

[0039] Figure 8 for Figure 7 A schematic diagram of the cross-sectional structure shown in the EE direction;

[0040] Figure 9 This is a three-dimensional structural diagram showing that the sliding trajectory of the first fabric body and the sliding member proposed in this invention is a broken line shape.

[0041] Legend:

[0042] 1. Support base; 2. First detection component; 21. Support plate; 211. Snap-fit ​​groove; 212. Air inlet; 213. Air outlet; 22. Washer; 23. Air supply pipe; 24. First detection piece; 25. Positioning piece; 3. Pressing assembly; 4. Second detection component; 41. Drive component; 42. Water tank; 421. Water storage chamber; 43. Observation component; 431. Frame; 432. Base plate; 4321. Observation area; 433. First water-blocking cloth; 434. Second water-blocking cloth; 435. Observation piece; 4351. Third water-blocking cloth; 43510. Observation window; 43511. Sliding piece; 43512. First cloth body; 4352. Transparent plate; 4353. Ruler; 4354. Scale needle; 5. Gear pump. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Example:

[0045] Reference Figures 1 to 9 The present invention provides a gear pump sealing test device, which includes a support base 1, a first test component 2, a crimping component 3 and a second test component 4.

[0046] The first detection component 2 includes a support plate 21, a gasket 22, an air supply pipe 23, and a first detection element 24. The support plate 21 is disposed on the support base 1 and has a snap-fit ​​groove 211 on its top. The side wall of the support plate 21 has an air inlet 212, the top has an air outlet 213, and an air supply channel is formed inside. The air inlet 212 and the air outlet 213 are respectively connected to the air supply channel. The gasket 22 is disposed in the snap-fit ​​groove 211 to seal the end of the gear pump 5 so that a sealed cavity is formed inside the gear pump 5. One end of the air supply pipe 23 is connected to the air inlet 212 and the other end is connected to the first detection element 24. The first detection element 24 is used to supply gas to the sealed cavity of the gear pump 5 to achieve a set pressure.

[0047] The crimping assembly 3 is disposed on the support base 1. The crimping assembly 3 has a first state of crimping the gear pump 5 onto the washer 22 and a second state of releasing the gear pump 5 from the washer 22.

[0048] The second detection component 4 includes a driving component 41, a water tank 42, and an observation component 43. The driving component 41 is disposed on the support base 1, and the water tank 42 is disposed on the driving component 41 and located below the support plate 21. The top of the water tank 42 is open and a water storage cavity 421 is formed inside. A notch is opened on the side wall of the water tank 42. The observation component 43 is sealed in the notch for observing the part of the gear pump 5 to be detected. The driving component 41 is used to drive the water tank 42 to move up and down so as to completely immerse the part of the gear pump 5 to be detected.

[0049] The gear pump sealing detection device provided by this invention, by setting up the support base 1, the first detection component 2, the pressing component 3, and the second detection component 4, etc., in practical applications, firstly, the gear pump 5 is pressed onto the gasket 22 by the pressing component 3, and then gas is supplied to the sealing cavity of the gear pump 5 through the first detection component 24 to reach the set pressure. If the pressure displayed by the first detection component 24 does not change, it means that the gear pump 5 is not leaking and is qualified. If the pressure displayed by the first detection component 24 decreases, it means that the gear pump 5 is leaking. Then, the water tank 42 is driven upward by the driving component 41 to completely immerse the part of the gear pump 5 to be tested. Then, the observation component 43 observes where the air bubbles are coming out of the part of the gear pump 5 to be tested. By setting up the above structure, this invention can not only detect whether the gear pump 5 is leaking, but also observe the location of the leak through the observation component 43, making it easy to find the specific location of the leak and facilitating subsequent maintenance work.

[0050] The gear pump 5 is provided with a pressing groove, and the pressing end of the pressing assembly 3 extends into the pressing groove to press the gear pump 5 onto the washer 22. This design makes the pressing of the gear pump 5 more stable, the sealing effect of the sealing cavity of the gear pump 5 better, and is conducive to testing the sealing performance of the gear pump 5.

[0051] The gas delivery detection process of the gas delivery pipe 23 and the first detection element 24 is a mature technical means in the prior art. Those skilled in the art can deliver gas into the sealed cavity of the gear pump 5 through the first detection element 24 to achieve the set pressure, and then observe whether the pressure displayed by the first detection element 24 changes to determine whether the gear pump 5 is leaking. Therefore, this part should not be construed as a limitation of the present invention.

[0052] Furthermore, in another embodiment, the observation component 43 includes a frame 431, a base plate 432, a first water-blocking cloth 433, a second water-blocking cloth 434, and an observation element 435. One end of the frame 431 is sealed to the observation port, and the other end extends into the water tank 42. The base plate 432 is sealed to the bottom of the frame 431. The first water-blocking cloth 433 is slidably sealed to the left side of the frame 431, and the second water-blocking cloth 434 is slidably sealed to the right side of the frame 431. One end of the observation element 435 is sealed to the first water-blocking cloth 433, the other end is sealed to the second water-blocking cloth 434, and the bottom end is slidably sealed to the base plate 432. An observation area 4321 is formed by the base plate 432, the first water-blocking cloth 433, the second water-blocking cloth 434, and the observation element 435. The observation element 435 is used to observe the part of the gear pump 5 to be tested. The frame 431, base plate 432, first water-blocking cloth 433, second water-blocking cloth 434, and observation piece 435 are configured such that the position of the observation piece 435 relative to the part to be tested of the gear pump 5 is adjustable, and an observation area 4321 is formed, which makes it easy to observe where air bubbles are coming out of the part to be tested of the gear pump 5, making it easy to find the specific air leakage location of the gear pump 5 and facilitating subsequent maintenance work.

[0053] The first water-blocking cloth 433 and the second water-blocking cloth 434 are both made of waterproof materials, specifically, they can be polyester fiber coated cloth.

[0054] Furthermore, in another embodiment, both the first water-blocking cloth 433 and the second water-blocking cloth 434 are extendable and retractable, and are used to adjust the distance between the observation element 435 and the part of the gear pump 5 to be tested. This design makes it easier to adjust the position of the observation element 435, facilitating the observation of where air bubbles are escaping from the part of the gear pump 5 to be tested.

[0055] Furthermore, in another embodiment, the observation element 435 includes a third water-blocking cloth 4351 and a transparent plate 4352. One end of the third water-blocking cloth 4351 is sealed to the first water-blocking cloth 433, the other end is sealed to the second water-blocking cloth 434, and the bottom end is slidably sealed to the base plate 432. The third water-blocking cloth 4351 has at least three observation windows 43510, and each observation window 43510 is sealed with a transparent plate 4352. The transparent plate 4352 is transparent. An observation area 4321 is formed by the barrier between the base plate 432, the first water-blocking cloth 433, the second water-blocking cloth 434, and the third water-blocking cloth 4351. In practical applications, by setting the third water-blocking cloth 4351 and the transparent plate 4352, and the third water-blocking cloth 4351 having at least three observation windows 43510, the three observation windows 43510 correspond to different positions of the gear pump 5 to be tested, which further facilitates the observation of where air bubbles are coming out of the gear pump 5 to be tested, making it easier to find the specific air leakage location of the gear pump 5 and facilitating subsequent maintenance work.

[0056] The transparent plate 4352 is made of a deformable transparent material.

[0057] Further, in another embodiment, the third water-blocking cloth 4351 includes a sliding member 43511 and a first cloth body 43512. The sliding member 43511 is slidably and sealed to the frame 431. One end of the first cloth body 43512 is sealed to the first water-blocking cloth 433, the other end is sealed to the second water-blocking cloth 434, and the bottom end is slidably and sealed to the sliding member 43511. The positions of at least three observation windows 43510 relative to the part to be tested of the gear pump 5 can be adjusted respectively. The sliding trajectory of the first cloth body 43512 and the sliding member 43511 is straight, curved, or arc-shaped. The shapes of the sliding member 43511 and the first cloth body 43512 can be designed according to actual needs to achieve a straight sliding trajectory (e.g., Figure 5 and Figure 6 As shown), broken line shape (such as...) Figure 9As shown in the figure, similarly, the sliding trajectory can also be curved or arc-shaped. This design allows the positions of at least three observation windows 43510 to be adjusted according to the sliding trajectory. Specifically, when the sliding trajectory of the first cloth body 43512 and the sliding member 43511 is a broken line, one observation window 43510 can correspond to the front side of the part to be tested of the gear pump 5, one observation window 43510 can correspond to the right side of the part to be tested of the gear pump 5, and one observation window 43510 can correspond to the left side of the part to be tested of the gear pump 5. This design makes it easier to observe where the air bubbles are coming out of the part to be tested of the gear pump 5, making it easier to find the specific leak location of the gear pump 5 and facilitating subsequent maintenance work.

[0058] The first fabric body 43512 is made of waterproof material, specifically, it can be a polyester fiber coated fabric.

[0059] Furthermore, in another embodiment, the observation element 435 further includes a scale 4353, which is vertically disposed on the transparent plate 4352. Preferably, the scale of the scale 4353 at least partially covers the part of the gear pump 5 to be tested along the vertical direction. The observation element 435 also includes a graduated needle 4354, which is disposed on the scale 4353 for marking the scales that need to be recorded. To prevent workers from forgetting the location of the air bubble after seeing it, the scale 4353 and the graduated needle 4354 are set to mark the air leakage position of the part of the gear pump 5 to be tested at a certain scale on the horizontal plane. After recording the scale, the specific air leakage position of the part of the gear pump 5 to be tested can be found later with the help of the separate scale 4353. This design makes it easy to find the specific air leakage position of the gear pump 5, which is beneficial to subsequent maintenance work.

[0060] The scale needle 4354 is magnetically connected to the scale ruler 4353 to facilitate adjustment of the position of the scale needle 4354 on the scale ruler 4353, which is convenient for actual operation.

[0061] Furthermore, in another embodiment, the first detection component 2 further includes a positioning member 25, one end of which is fixedly connected to the support plate 21, and the other end passes through and extends out of the washer 22. Two positioning members 25 are arranged circumferentially along the washer 22. This design makes the pressing of the gear pump 5 more stable, prevents the gear pump 5 from slipping during the pressing process, and improves the sealing effect of the sealing cavity of the gear pump 5, which is beneficial for detecting the sealing performance of the gear pump 5.

[0062] In another preferred embodiment, two observation components 43 are provided. When the pressing component 3 presses the gear pump 5 onto the washer 22, the two observation components 43 are symmetrically distributed on both sides of the gear pump 5, so as to better observe where the air bubbles are coming out of the part of the gear pump 5 to be tested, making it easier to find the specific air leakage location of the gear pump 5 and facilitating subsequent maintenance work.

[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 foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sealing performance testing device for a gear pump, characterized in that, include: Support base (1); The first detection component (2) includes a support plate (21), a gasket (22), an air supply pipe (23), and a first detection element (24). The support plate (21) is located on the support base (1) and has a snap-fit ​​groove (211) on its top. The side wall of the support plate (21) has an air inlet (212), the top has an air outlet (213), and an air supply channel is formed inside. The air inlet (212) and the air outlet (213) are respectively connected to the air supply channel. The gasket (22) is located in the snap-fit ​​groove (211) to seal the end of the gear pump (5) so that a sealed cavity is formed inside the gear pump (5). One end of the air supply pipe (23) is connected to the air inlet (212), and the other end is connected to the first detection element (24). The first detection element (24) is used to supply gas to the sealed cavity of the gear pump (5) to achieve a set pressure. A crimping assembly (3) is provided on the support base (1). The crimping assembly (3) has a first state of crimping the gear pump (5) onto the washer (22) and a second state of releasing the gear pump (5) from the washer (22). The second detection component (4) includes a drive (41), a water tank (42), and an observation component (43). The drive (41) is located on the support base (1). The water tank (42) is located on the drive (41) and below the support plate (21). The top of the water tank (42) is open and a water storage cavity (421) is formed inside. The side wall of the water tank (42) has a notch. The observation component (43) is sealed in the notch for observing the part of the gear pump (5) to be tested. The drive (41) is used to drive the water tank (42) to move up and down so as to completely immerse the part of the gear pump (5) to be tested.

2. The gear pump sealing performance testing device according to claim 1, characterized in that: The observation assembly (43) includes a frame (431), a base plate (432), a first water-blocking cloth (433), a second water-blocking cloth (434), and an observation element (435). One end of the frame (431) is sealed to the observation port, and the other end extends into the water tank (42). The base plate (432) is sealed to the bottom of the frame (431). The first water-blocking cloth (433) is slidably sealed to the left side of the frame (431), and the second water-blocking cloth (434) is slidably sealed to the left side of the frame (431). On the right side of the frame (431), one end of the observation piece (435) is sealed to the first water-blocking cloth (433), the other end is sealed to the second water-blocking cloth (434), and the bottom end is slidably sealed to the base plate (432). The base plate (432), the first water-blocking cloth (433), the second water-blocking cloth (434) and the observation piece (435) form an observation area (4321). The observation piece (435) is used to observe the part of the gear pump (5) to be tested.

3. The gear pump sealing performance testing device according to claim 2, characterized in that: Both the first water-blocking cloth (433) and the second water-blocking cloth (434) are retractable. The first water-blocking cloth (433) and the second water-blocking cloth (434) are used to adjust the distance between the observation piece (435) and the part to be tested of the gear pump (5).

4. The gear pump sealing performance testing device according to claim 3, characterized in that: The observation element (435) includes a third water-blocking cloth (4351) and a transparent plate (4352). One end of the third water-blocking cloth (4351) is sealed to the first water-blocking cloth (433), the other end is sealed to the second water-blocking cloth (434), and the bottom end is slidably sealed to the base plate (432). The third water-blocking cloth (4351) has at least three observation windows (43510). Each observation window (43510) is sealed with a transparent plate (4352). The transparent plate (4352) is transparent. The base plate (432), the first water-blocking cloth (433), the second water-blocking cloth (434), and the third water-blocking cloth (4351) form an observation area (4321).

5. The gear pump sealing performance testing device according to claim 4, characterized in that: The third water-blocking cloth (4351) includes a sliding member (43511) and a first cloth body (43512). The sliding member (43511) is slidably and sealed on the frame (431). One end of the first cloth body (43512) is sealed to the first water-blocking cloth (433), the other end is sealed to the second water-blocking cloth (434), and the bottom end is slidably and sealed to the sliding member (43511). The positions of at least three observation windows (43510) relative to the part to be tested of the gear pump (5) can be adjusted respectively.

6. The gear pump sealing performance testing device according to claim 5, characterized in that: The sliding trajectories of the first fabric body (43512) and the sliding member (43511) are straight lines, broken lines, curves or arcs.

7. The gear pump sealing performance testing device according to claim 6, characterized in that: The observation element (435) also includes a scale (4353), which is set vertically on the transparent plate (4352).

8. The gear pump sealing performance testing device according to claim 7, characterized in that: The observation element (435) also includes a scale needle (4354) located on the scale (4353) for marking the scale that needs to be recorded.

9. The gear pump sealing performance testing device according to claim 8, characterized in that: The first detection component (2) further includes a positioning element (25), one end of which is fixedly connected to the support plate (21), and the other end passes through the washer (22) and extends out of the washer (22).

10. The gear pump sealing performance testing device according to claim 9, characterized in that: Two positioning elements (25) are provided along the circumference of the washer (22).

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