Water pump body fixing device

Abstract

The utility model provides a water pump body fixing device which is structurally characterized in that two water gap fixing tables and a side supporting table respectively form three-point supporting and fixing on a water inlet, a water outlet and the peripheral surface of a pump body of a water pump to be detected, and the two water gap fixing tables are respectively provided with a sealing gasket; when the to-be-tested pump body is aligned with the operation end faces of the water gap fixing tables, the distance adjusting component drives the two water gap fixing tables to be close to each other, so that the sealing gaskets abut against and completely seal the water gap end faces of the pump body to fix the lateral position of the pump body and seal the water inlet and the water outlet at the same time, and the side supporting tables abut against the peripheral side face of the to-be-tested water pump. The water inlet and the water outlet on the two sides of the water pump basically adopt the same shape, and the size change is not large within a certain range, so that the same set of device can adapt to various water pump models within a certain range, and the test efficiency is improved. The problem that a fixing tool for the air tightness test of the pump body is poor in universality is solved.

Description

Technical Field

[0001] This utility model relates to the field of pump equipment technology, and more specifically, to a pump body fixing device for a water pump. Background Technology

[0002] A water pump is a machine used to transport or pressurize liquids. It transfers the mechanical energy of a prime mover or other external energy to the liquid, increasing the liquid's energy. It is mainly used to transport liquids including water, oil, acid and alkali solutions, emulsions, suspensions, and liquid metals. It can also transport mixtures of liquids and gases, as well as liquids containing suspended solids. If the water pump's sealing performance is poor, it will be unable to pressurize or transport the liquid or gas, seriously affecting the safe operation of the system and easily leading to a significant waste of human and financial resources.

[0003] The sealing performance of a pump has a significant impact on its pumping performance. Currently, pump sealing is mainly tested through methods such as water introduction, immersion, or pressure testing. These common testing methods all require a fixture whose external shape perfectly matches the pump casing. This fixture is typically produced by molding the pump casing and using the mold as a reference. However, this fixture design, where each fixture corresponds to a specific product model, often necessitates frequent replacements by the manufacturer. Each update to the product's shape renders the existing airtightness testing fixture obsolete. Furthermore, the molded fixture's casing structure requires a high degree of fit between the fixture's inner surface and the pump casing's outer surface; wear and impacts degrade its performance, limiting its usability. All these factors contribute to higher production costs for pump products.

[0004] In summary, existing fixed fixtures for testing the airtightness of water pump bodies suffer from technical problems such as poor versatility and high cost. Utility Model Content

[0005] The technical problem to be solved by this utility model is that the existing fixed fixtures for testing the air tightness of water pump bodies have poor versatility and high cost.

[0006] To address the aforementioned problems, this utility model provides a pump body fixing device for testing the airtightness of a pump body. The device includes a tooling base and a side support platform connected to the tooling base. The side support platform supports the outer wall of the pump body under test. The tooling base is equipped with a first inlet fixing platform and a second inlet fixing platform for fixing the inlet and outlet ports on both sides of the pump body under test. The working ends of the first and second inlet fixing platforms are aligned and have the same distance from the top surface of the tooling base. Each working end of the first and second inlet fixing platforms is provided with a sealing gasket that abuts against and seals the inlet and outlet ports on both sides of the pump body under test. The base of the first inlet fixing platform is connected to a distance adjustment component for extending and retracting to adjust the distance between the first and second inlet fixing platforms.

[0007] This utility model provides a pump body fixing device that replaces the traditional surface-fitting design of fixing fixtures with a multi-point support fixing method. Its structure consists of two inlet fixing platforms and a side support platform, forming a three-point support fixing for the inlet and outlet ports at both ends of the pump body under test and the outer peripheral surface of the pump body. Each of the two inlet fixing platforms is equipped with a sealing gasket. After the inlets at both ends of the pump body under test are aligned with the working end faces of the inlet fixing platforms, the first and second inlet fixing platforms are adjusted closer together by a distance adjustment component. This allows the sealing gaskets to press against and completely seal the inlet end faces of the pump body, forming a seal for the inlet and outlet ports while fixing the lateral position of the pump body. The side support platform abuts against the outer peripheral surface of the pump under test to prevent… The pump body rotates during the airtightness test. After the pump under test is fixed, it is tested using general airtightness testing methods such as immersion. Since the inlet and outlet on both sides of the pump body vary in size relative to the pump body, they are basically the same shape and the size variation is not significant. Therefore, it is only necessary to use a water inlet fixing platform with a slightly larger radial dimension and a sealing gasket to accommodate a variety of pump models within a certain range. Furthermore, it can adapt to pumps with different widths or water inlet spacings by adjusting the distance component. This realizes that one set of fixing fixtures can meet the airtightness testing needs of various pump models, solving the technical problems of poor versatility and high cost of existing fixing fixtures for pump body airtightness testing.

[0008] As a preferred embodiment, each of the first and second nozzle fixing platforms has a protruding support plate structure on the side of its working end face facing the tooling base, used to support the bottom sides of the inlet and outlet ports on both sides of the pump body under test. This design further optimizes the working end face structure of the two nozzle fixing platforms. By setting a protruding support plate structure on the bottom side of the working end face, i.e., the side near the top surface of the tooling base, it can provide auxiliary support for the bottom side of the pump nozzle pipe. This design can accommodate pump body structures with greater weight, preventing the pump from slipping downwards after being fixed due to its large self-weight. Furthermore, the support plate structure can provide pre-support for the pump during the adjustment of the distance adjustment components after the pump is placed, reducing the difficulty of the operation.

[0009] As a preferred embodiment, both the first and second inlet fixing platforms are cylindrical, and the support plate structure is semi-annular and integrally formed with the first and second inlet fixing platforms, respectively. This design optimizes the structure of the inlet fixing platforms and the support plate structure. Both inlet fixing platforms adopt a cylindrical structure, with the working end face being the circular end face of one end of the cylinder. This shape can better adapt to the inlet and outlet shapes of general water pumps, enhancing the sealing effect. At the same time, the support plate structure is adapted to the shape design of the inlet fixing platforms. The support plate structure is semi-annular, and its outer edge dimension is preferably consistent with the outer diameter dimension of the inlet fixing platform. The integral forming simplifies the processing steps, and the concave surface of the semi-annular support plate structure can more stably support the water pump inlet.

[0010] As a preferred embodiment, both the first and second sprue fixing platforms are connected to the tooling base via mounting side plates. The two ends of the distance adjustment component are respectively connected to the first sprue fixing platform and the mounting side plate on the same side. This design provides a preferred connection method between the sprue fixing platform and the working base. The mounting side plate adopts a square plate structure or an L-shaped plate structure and is fixed to the tooling base by riveting, welding, or threaded connection. The distance adjustment component is located between the first sprue fixing platform and the mounting side plate on the same side.

[0011] As a preferred embodiment, the distance adjustment component includes two hollow connecting shafts that are nested together and a feed drive structure located between the two connecting shafts. The feed drive structure outputs axial feed motion to lengthen or shorten the two connecting shafts. This design provides a preferred distance adjustment component design, the main structure of which is two hollow connecting shafts that are nested together. The two connecting shafts are preferably slidably connected, and a feed drive structure is set in the hollow space within the shafts to output axial feed motion, driving the mutual lengthening or shortening of the two connecting shafts to achieve distance adjustment.

[0012] As a preferred embodiment, the feed drive structure is a piston cylinder, with both ends of the piston cylinder respectively fixed to the two connecting shafts. Based on the above design, a piston cylinder component is used as the feed drive structure, directly outputting linear feed to drive length adjustment. The structure is simple and easy to control. Of course, other similar designs can also be used, as long as the same extension / retraction adjustment effect is achieved. For example, the feed drive structure can be a linear output motor or a general rotary output motor. When a rotary output motor is used, the two connecting shafts are threaded together, allowing the motor output rotation to drive the two connecting shafts to rotate relative to each other, thereby achieving extension or shortening adjustment of the two connecting shafts.

[0013] As a preferred embodiment, the side support platform is an L-shaped plate. One side of the side support platform is fitted and connected to the tooling base, and the other side of the side support platform is provided with an inclined support surface. The pump body to be tested is supported and positioned at a preset tilt angle through the inclined support surface. This design provides a preferred side support platform structure, using an L-shaped plate design, which allows for a relatively firm fixation to the tooling base. Furthermore, the inclined support surface on the side supporting the water pump increases the contact area between the side support platform and the side of the water pump, preventing excessive compression that could damage the surface structure.

[0014] As a preferred embodiment, the tooling base is provided with an elongated slot-shaped through hole at the connection position with the side support platform. The length direction of the elongated slot-shaped through hole is perpendicular to the line connecting the centers of the working end faces of the first and second sprue fixing platforms. The side support platform is slidably engaged with the elongated slot-shaped through hole by a fastening pin, thereby adjusting the distance between the inclined support surface and the first and second sprue fixing platforms. This design provides a preferred connection method between the side support platform and the tooling base. The tooling base is provided with an elongated slot-shaped through hole, which is used to fix the side support platform with a fastening pin. The position of the side support platform on the tooling base is adjusted by sliding the fastening pin within the elongated slot-shaped through hole, thereby adjusting the distance between the two sprue fixing platforms and the inclined support surface, which can better accommodate pump bodies of different external dimensions.

[0015] As a preferred embodiment, both the first and second sprue fixing platforms have columnar recessed mounting grooves on their working end faces, and the sealing gasket is fitted and fixed within the recessed mounting grooves. This design provides a preferred connection method between the sealing gasket and the end face of the sprue fixing platform. The working end face is provided with recessed mounting grooves whose shape matches the sealing gasket. This design can increase the thickness of the sealing gasket and ensure a firm fit. Furthermore, using a sealing gasket with a larger axial thickness can improve the sealing effect between the working end face and the inlet / outlet end face of the water pump. Attached Figure Description

[0016] Figure 1 A schematic diagram of the working state of a water pump body fixing device provided by this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the pump body fixing device for a medium-water pump from another angle;

[0018] Figure 3 for Figure 1 Schematic diagram of the overall structure of the water pump body fixing device;

[0019] Figure 4 for Figure 3 A partial structural diagram of the first inlet fixing platform of the water pump body fixing device;

[0020] in, Figures 1-4 middle:

[0021] 1. Pump body; 2. Inlet and outlet; 3. Tooling base; 4. First inlet fixing platform; 4-1. Distance adjustment component; 5. Mounting side plate; 6. Side support platform; 6-1. Inclined support surface; 7. Second inlet fixing platform; 8. Support plate structure; 9. Sealing gasket. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Before providing a detailed explanation of the working principle of this utility model, further clarification is needed regarding its description: In this description, terms such as "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, an indirect connection through an intermediate medium, or a welded connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] refer to Figures 1-4 The following examples illustrate this. Figure 1 A schematic diagram of the working state of a water pump body fixing device provided by this utility model; Figure 2 for Figure 1 A schematic diagram of the pump body fixing device for a medium-water pump from another angle; Figure 3 for Figure 1 Schematic diagram of the overall structure of the water pump body fixing device; Figure 4 for Figure 3 A partial structural diagram of the first inlet fixing platform of the medium-water pump body fixing device.

[0026] This utility model provides a water pump body fixing device for airtightness testing of a water pump body 1. It includes a tooling base 3 and a side support platform 6 connected to the tooling base 3. The side support platform 6 supports the outer side wall of the water pump body 1 under test. The tooling base 3 is provided with a first water inlet fixing platform 4 and a second water inlet fixing platform 7 for fixing the inlet and outlet ports 2 on both sides of the water pump body 1 under test. The working ends of the first water inlet fixing platform 4 and the second water inlet fixing platform 7 are aligned and have the same distance from the top surface of the tooling base 3. Both the working ends of the first water inlet fixing platform 4 and the second water inlet fixing platform 7 are provided with sealing gaskets 9 that abut against and seal the inlet and outlet ports 2 on both sides of the water pump body 1 under test. The base of the first water inlet fixing platform 4 is connected to a distance adjustment member 4-1 for telescopically adjusting the distance between the first water inlet fixing platform 4 and the second water inlet fixing platform 7.

[0027] The pump body fixing device provided by this utility model adopts a multi-point support fixing method to replace the surface-fit design of traditional fixing fixtures. Its structure consists of two water inlet fixing platforms and a side support platform 6, which respectively form a three-point support fixing for the inlet and outlet 2 at both ends of the pump body 1 under test and the outer peripheral surface of the pump body. Each of the two water inlet fixing platforms is equipped with a sealing gasket 9. After the water inlets at both ends of the pump body under test are aligned with the working end faces of the water inlet fixing platforms, the distance adjustment component 4-1 is used to adjust the first water inlet fixing platform 4 and the second water inlet fixing platform 7 to move closer to each other, so that the sealing gasket 9 is pressed against and completely seals the water inlet end faces of the pump body. While fixing the lateral position of the pump body, it forms a seal against the inlet and outlet 2, and the side support platform 6 abuts against the outer peripheral side of the pump under test. To prevent the pump body from rotating during the airtightness test, after the pump under test is fixed, the pump is tested using general airtightness test methods such as immersion. Since the inlet and outlet 2 on both sides of the pump body vary in size relative to the pump body, they basically adopt the same shape and the size variation is not large. Therefore, it is only necessary to use the working end face of the nozzle fixing platform with a slightly larger radial dimension and the sealing gasket 9 to adapt to a variety of pump models within a certain range. Moreover, it can adapt to pumps with different widths or nozzle spacings through the distance adjustment component 4-1. Thus, a set of fixing fixtures can adapt to the airtightness test requirements of various pump models, solving the technical problems of poor universality and high cost of existing fixing fixtures for airtightness testing of pump body 1.

[0028] In the technical solution provided in this embodiment, the first water inlet fixing platform 4 and the second water inlet fixing platform 7 each have a protruding support plate structure 8 on the side facing the tooling base 3 on their working end faces, which is used to support the bottom sides of the inlet and outlet water inlets 2 on both sides of the pump body 1 to be tested. This design further optimizes the working end face structure design of the two water inlet fixing platforms. By setting the support plate structure 8 protruding from the end face on the bottom side of the working end face, that is, on the side close to the top surface of the tooling base 3, it can form auxiliary support for the bottom side of the water pump water inlet pipe. This design can adapt to the heavier pump body structure and avoid the water pump sliding down after being fixed due to its large self-weight. Moreover, the support plate structure 8 can pre-form support for the water pump during the adjustment of the distance adjustment component 4-1 after the water pump is placed, reducing the difficulty of the process operation.

[0029] In the technical solution provided in this embodiment, both the first sprue fixing platform 4 and the second sprue fixing platform 7 are cylindrical, and the support plate structure 8 is semi-annular and integrally formed and connected to the first sprue fixing platform 4 and the second sprue fixing platform 7 respectively. This design optimizes the structure of the sprue fixing platform and the support plate structure 8. Both sprue fixing platforms adopt a cylindrical structure, and the working end face is the circular end face of one end of the cylinder. This shape can better adapt to the shape of the inlet and outlet 2 of a general water pump, and strengthen the sealing effect. At the same time, the support plate structure 8 is adapted to the shape design of the sprue fixing platform. The support plate structure 8 is semi-annular, and its outer edge dimension is preferably consistent with the outer diameter dimension of the sprue fixing platform. The integral forming simplifies the processing process, and the concave surface of the semi-annular support plate structure 8 can more stably support the water pump inlet.

[0030] In the technical solution provided in this embodiment, both the first sprue fixing platform 4 and the second sprue fixing platform 7 are connected to the tooling base 3 via mounting side plates 5. The two ends of the distance adjustment component 4-1 are respectively connected to the first sprue fixing platform 4 and the mounting side plate 5 on the same side. This design provides a preferred connection method between the sprue fixing platform and the working base. The mounting side plate 5 adopts a square plate structure or an L-shaped plate structure and is fixed to the tooling base 3 by riveting, welding, or threaded connection. The distance adjustment component 4-1 is located between the first sprue fixing platform 4 and the mounting side plate 5 on the same side.

[0031] In the technical solution provided in this embodiment, the distance adjustment component 4-1 includes two hollow connecting shafts that are nested together and a feed drive structure located between the two connecting shafts. The feed drive structure outputs axial feed motion to drive the two connecting shafts to lengthen or shorten. This design provides a preferred design for the distance adjustment component 4-1, the main structure of which is two hollow connecting shafts that are nested together. Preferably, the two connecting shafts are slidably connected, and a feed drive structure is set in the hollow space within the shafts to output axial feed motion, driving the two connecting shafts to lengthen or shorten each other to achieve distance adjustment.

[0032] In the technical solution provided in this embodiment, the feed drive structure is a piston cylinder, with both ends of the piston cylinder respectively fixed to two connecting shafts. Based on the above-designed structure, a piston cylinder component is used as the feed drive structure. This structure directly outputs linear feed to drive length adjustment, resulting in a simple structure and convenient control. Of course, other similar designs can also be used, as long as the same extension and retraction adjustment effect is achieved. For example, the feed drive structure can be a linear output motor or a general rotary output motor. When a rotary output motor is used, the two connecting shafts are threaded together, and the motor output rotation drives the two connecting shafts to rotate relative to each other, thereby achieving the extension or retraction adjustment of the two connecting shafts.

[0033] In the technical solution provided in this embodiment, the side support platform 6 is an L-shaped plate. One side of the side support platform 6 is attached to the tooling base 3, and the other side of the side support platform 6 is provided with an inclined support surface 6-1. The pump body 1 to be tested is supported and positioned at a preset tilt angle by the inclined support surface. This design provides a preferred structural design for the side support platform 6, which adopts an L-shaped plate design, thereby forming a relatively firm fixation with the tooling base 3. Furthermore, the inclined support surface 6-1 is provided on the side used to support the water pump. This structure increases the contact area between the side support platform 6 and the side of the water pump, avoiding excessive compression between the two and causing damage to the surface structure.

[0034] In the technical solution provided in this embodiment, the tooling base 3 is provided with an elongated slot-shaped through hole at the position where it connects with the side support platform 6. The length direction of the elongated slot-shaped through hole is perpendicular to the line connecting the centers of the working end faces of the first water inlet fixing platform 4 and the second water inlet fixing platform 7. The side support platform 6 is slidably engaged with the elongated slot-shaped through hole by fastening pins to adjust the distance between the inclined support surface 6-1 and the first water inlet fixing platform 4 and the second water inlet fixing platform 7. This design provides a preferred connection method between the side support platform 6 and the tooling base 3. An elongated slot-shaped through hole is provided on the tooling base 3, and the side support platform 6 is fixed by fastening pins inserted through the elongated slot-shaped through hole. The position of the side support platform 6 on the tooling base 3 is adjusted by sliding the fastening pins in the elongated slot-shaped through hole, thereby adjusting the distance between the two water inlet fixing platforms and the inclined support surface 6-1, which can better adapt to pump bodies 1 with different external dimensions.

[0035] In the technical solution provided in this embodiment, both the working end faces of the first water inlet fixing platform 4 and the second water inlet fixing platform 7 are provided with columnar embedded mounting grooves, and the sealing gasket 9 is fitted and fixed in the embedded mounting grooves. This design provides a preferred connection method between the sealing gasket 9 and the end face of the water inlet fixing platform. The working end face is provided with an embedded mounting groove whose shape matches the sealing gasket 9. This design can increase the thickness of the sealing gasket 9 and ensure the firmness of the fit. Furthermore, using a sealing gasket 9 with a larger axial thickness can improve the sealing effect between the working end face and the end face of the water pump inlet / outlet 2.

[0036] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A pump body fixing device for testing the airtightness of a water pump body, characterized in that, The device includes a tooling base (3) and a side support platform (6) connected to the tooling base (3). The side support platform (6) is used to support the outer wall of the pump body (1) to be tested. The tooling base (3) is provided with a first water inlet fixing platform (4) and a second water inlet fixing platform (7) for fixing the inlet and outlet water inlets (2) on both sides of the pump body (1) to be tested. The working end faces of the first water inlet fixing platform (4) and the second water inlet fixing platform (7) are aligned and the distance between them and the top surface of the tooling base (3) is consistent. The working end faces of the first water inlet fixing platform (4) and the second water inlet fixing platform (7) are provided with sealing gaskets (9) that abut against and seal the inlet and outlet water inlets (2) on both sides of the pump body (1) to be tested. The base of the first water inlet fixing platform (4) is connected to a distance adjustment component (4-1) for telescopic adjustment of the distance between the first water inlet fixing platform (4) and the second water inlet fixing platform (7).

2. The water pump body fixing device according to claim 1, characterized in that, The first water inlet fixing platform (4) and the second water inlet fixing platform (7) each have a raised support plate structure (8) on the side facing the tooling base (3) to support the bottom side of the inlet and outlet (2) on both sides of the pump body (1) of the water pump to be tested.

3. The water pump body fixing device according to claim 2, characterized in that, The first sprue fixing platform (4) and the second sprue fixing platform (7) are both cylindrical, and the support plate structure (8) is semi-circular and is integrally formed and connected to the first sprue fixing platform (4) and the second sprue fixing platform (7).

4. The pump body fixing device according to claim 3, characterized in that, The first sprue fixing platform (4) and the second sprue fixing platform (7) are both connected to the tooling base (3) through the mounting side plate (5). The two ends of the distance adjustment component (4-1) are respectively connected to the first sprue fixing platform (4) and the mounting side plate (5) on the same side.

5. The water pump body fixing device according to claim 4, characterized in that, The distance adjustment component (4-1) includes two hollow connecting shafts that are nested together and a feed drive structure located between the two connecting shafts. The feed drive structure outputs axial feed motion to drive the two connecting shafts to lengthen or shorten.

6. The water pump body fixing device according to claim 5, characterized in that, The feed drive structure is a piston cylinder, and the two ends of the piston cylinder are respectively fixed to the two connecting shafts.

7. The water pump body fixing device according to claim 1, characterized in that, The side support platform (6) is an L-shaped plate. One side of the side support platform (6) is attached to the tooling base (3). The other side of the side support platform (6) is provided with an inclined support surface (6-1). The pump body (1) of the water pump to be tested is supported and positioned at a preset inclination angle by the inclined support surface.

8. The water pump body fixing device according to claim 5, characterized in that, The tooling base (3) is provided with a long slot-shaped through hole at the position where it is connected to the side support platform (6). The length direction of the long slot-shaped through hole is perpendicular to the line connecting the center of the working end face of the first sprue fixing platform (4) and the second sprue fixing platform (7). The side support platform (6) is slidably engaged with the long slot-shaped through hole by fastening pins to adjust the distance between the inclined support surface (6-1) and the first sprue fixing platform (4) and the second sprue fixing platform (7).

9. The water pump body fixing device according to claim 1, characterized in that, The working end faces of the first sprue fixing platform (4) and the second sprue fixing platform (7) are both provided with columnar embedded mounting grooves, and the sealing gasket (9) is fitted and fixed in the embedded mounting grooves.

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