A pump
The pump body and flange connection method with double limit buckle design solves the problems of wear and unstable connection caused by repeated loading and unloading in the existing technology, and improves the pump's sealing performance and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI HAOLI PUMPS IND CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-06-19
AI Technical Summary
The existing snap-fit connection between the pump body and the flange is prone to wear due to repeated assembly and disassembly, resulting in unstable connection and affecting the sealing effect.
It adopts a dual-limit buckle design, including a first clamping component and a second clamping component. The first clamping state provides initial connection, and the second clamping state locks and fixes the device, reducing wear and improving tightness.
This improves the connection stability and sealing performance between the pump body and the flange, reduces the possibility of wear and loosening caused by repeated loading and unloading, and enhances the reliability of the pump.
Smart Images
Figure CN224380190U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of pump technology, and in particular to a pump. Background Technology
[0002] A pump is a device that uses the pressure difference generated by mechanical motion to transport liquids or gases. It is widely used in water conservancy projects, urban water supply, and heating, ventilation, and air conditioning systems.
[0003] The pump in the prior art includes a pump body and a flange. The pump body and the flange are connected by a snap-fit. The pump's inlet pipe is installed on the flange, and the flange is used to seal the opening of the pump body. The snap-fit includes a snap block set on the pump body. The flange has a snap groove that matches the shape of the snap block. When the operator assembles the pump, he snaps the snap block into the snap groove to achieve the snap-fit connection between the pump body and the flange.
[0004] The pumps described above are connected by a snap-fit method, which means that after the operator has assembled the pump body and flange, if the pump body needs to be inspected and there is an abnormality that requires reassembly and disassembly, the snap-fit process needs to be repeated. This repeated snap-fit process can easily cause wear on the snap-fit blocks and grooves, or result in a loose fit between them. Consequently, the connection between the pump body and flange becomes unstable during use, affecting the pump's sealing performance. Summary of the Invention
[0005] To address the issue in related technologies where pump body malfunctions necessitate repeated fastening and disassembly, which can cause wear on the locking blocks and slots or result in loose fits, leading to unstable connections between the pump body and flange and affecting the pump's sealing performance, this application provides a pump with the following technical solution: It includes a pump body and a flange, connected by a snap-fit unit. The snap-fit unit includes a first snap-fit component and a second snap-fit component. When the pump body and flange are connected via the first snap-fit component, they are in a first snap-fit state; when they are sequentially connected via the first and second snap-fit components, they are in a second snap-fit state.
[0006] In one specific implementation, the first clamping assembly includes a first clamping portion and a first clamping block that mates with the first clamping portion, with one of the pump bodies or flanges having the first clamping portion and the other having the first clamping block; the second clamping assembly includes a second clamping portion and a second clamping block that mates with the second clamping portion, with one of the pump bodies or flanges having the second clamping portion and the other having the second clamping block.
[0007] In one specific implementation, the second snap-fit portion includes at least one first limiting block disposed on the pump body or flange, and the second snap-fit block includes a limiting plate disposed on another; when the pump body and the flange are in the second snap-fit state, the first limiting block abuts against the limiting plate.
[0008] In one specific implementation, the number of first limiting blocks is set to two, and both first limiting blocks are disposed on the flange. The number of limiting plates is set to two, and both limiting plates are disposed on the pump body. The first snap-fit portion includes a first limiting hole opened on the flange. The first snap-fit block includes a second limiting block disposed on the pump body, and the second limiting block passes through the first limiting hole. When the pump body and the flange are in the second snap-fit state, the two limiting plates abut against the first limiting blocks respectively.
[0009] In one specific implementation scheme, the end of the limiting plate facing the first limiting block is provided with an abutment plate; when the pump body and the flange are in the second snap-fit state, the first limiting block abuts against the abutment plate.
[0010] In one specific implementation, the first and second snap-fit blocks are integrally configured as a snap-fit assembly.
[0011] In one specific implementation, the snap-fit assembly includes a first snap-fit block disposed on one of the pump body or the flange, and the second snap-fit portion includes a second snap-fit block disposed on the other; when the pump body and the flange are in the second snap-fit state, the first snap-fit block abuts against the second snap-fit block.
[0012] In one specific implementation, the clamping direction of the first clamping component is the same as the axial direction of the pump body.
[0013] In one specific implementation, the clamping direction of the first clamping component is different from the axial direction of the pump body.
[0014] In one specific implementation, when the number of the snap-fit units is set to four, the line connecting the snap-fit units located in two opposite positions is not perpendicular.
[0015] In summary, this application has the following beneficial technical effects: When the operator connects the first clamping assembly, the pump body and flange are in a preliminary clamping state, facilitating subsequent reassembly and disassembly of the pump during pump body testing. After the pump has passed testing and meets the finished product requirements, when the pump body and flange need to be locked together, the operator first uses the first clamping assembly to initially connect the pump body and flange, and then uses the second clamping assembly to lock and fix them, providing reinforcement. Compared with the unidirectional limiting connection method between the pump body and flange in related technologies, this application, by utilizing the dual limiting of the first and second clamping assemblies, reduces the occurrence of axial disengagement and decreases the possibility of loosening or unstable connection during use of the pump body and flange. Furthermore, the existing one-way disposable buckle design is prone to breakage or damage during loading and unloading. By adding a second clamping component, the possibility of wear caused by repeated fastening during the testing process is reduced, while the tightness of the fit between the pump body and the flange is improved, thus enhancing the pump's sealing performance. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.
[0017] Figure 2 yes Figure 1 Enlarged diagram of point A in the middle.
[0018] Figure 3 This is a schematic diagram of the structure used to illustrate the second snap-fit state in Embodiment 1 of this application.
[0019] Figure 4 yes Figure 3 Enlarged diagram of point B in the middle.
[0020] Figure 5 The schematic diagram in Embodiment 3 of this application illustrates the distribution of the snap-fit units.
[0021] Reference numerals in the attached drawings: 1. Pump body; 2. Flange; 3. First limiting hole; 4. First limiting block; 5. Second limiting block; 6. Limiting plate; 7. Abutment plate; 8. Snap-fit unit. Detailed Implementation
[0022] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.
[0023] This application discloses a pump.
[0024] Example 1
[0025] Reference Figure 1The system includes a pump body 1 and a flange 2. In this embodiment, the inlet pipe is installed on the flange 2. The flange 2 is used to seal the opening of the pump body 1. The pump body 1 and the flange 2 are connected by a snap-fit unit 8. The snap-fit unit 8 includes a first snap-fit component and a second snap-fit component. When the pump body 1 and the flange 2 are connected by the first snap-fit component, the pump body 1 and the flange 2 are in a first snap-fit state. When the pump body 1 and the flange 2 are connected by the first snap-fit component and the second snap-fit component in sequence, the pump body 1 and the flange 2 are in a second snap-fit state.
[0026] Reference Figure 1 The first locking assembly includes a first locking portion and a first locking block that mates with the first locking portion. One of the pump body 1 or the flange 2 is provided with the first locking portion, and the other with the first locking block. In this embodiment, the first locking portion is provided on the flange 2, and the first locking block is provided on the pump body 1. The second locking assembly includes a second locking portion and a second locking block that mates with the second locking portion. One of the pump body 1 or the flange 2 is provided with the second locking portion, and the other with the second locking block. In this embodiment, the second locking portion is provided on the flange 2, and the second locking block is provided on the pump body 1. When the pump body 1 and the flange 2 are in the first locking state, the first locking portion and the first locking block abut against each other; when the pump body 1 and the flange 2 are in the second locking state, the second locking portion and the second locking block abut against each other.
[0027] Therefore, the operator connects the first clamping assembly, and the first clamping part and the first clamping block abut against each other, so that the pump body 1 and the flange 2 are in the first clamping state. At this time, the pump body 1 and the flange 2 are initially connected. When the pump body 1 needs to be tested, it is convenient for the operator to reassemble and disassemble the pump during subsequent testing. When the pump body 1 and the flange 2 need to be locked and assembled after the pump test is completed, the operator first uses the first clamping assembly to initially connect the pump body 1 and the flange 2. Then, the operator pries the second clamping part toward the second clamping block so that the second clamping part abuts against the second clamping block, thereby locking and fixing the pump body 1 and the flange 2.
[0028] Reference Figure 2 and Figure 3In this application embodiment, the first snap-fit portion can be a groove or a hole; in this application embodiment one, a hole is used as an example for explanation. The second snap-fit portion includes at least one first limiting block 4 disposed on the pump body 1 or flange 2, and the second snap-fit block includes at least one limiting plate 6 disposed on the other. In this application embodiment, the number of first limiting blocks 4 is set to two, and both first limiting blocks 4 are disposed on flange 2; the number of limiting plates 6 is set to two, and both limiting plates 6 are disposed on pump body 1; the first snap-fit portion includes a first limiting hole 3 opened on flange 2; the first snap-fit block includes a second limiting block 5 disposed on pump body 1; the two limiting plates 6 are located on both sides of the second limiting block 5; the second limiting block 5 passes through the first limiting hole 3; in this application embodiment, the second limiting block 5 is provided with a guide slope, which serves as a guide to facilitate the smooth insertion of the second limiting block 5 into the first limiting hole 3; when pump body 1 and flange 2 are in the second snap-fit state, the two limiting plates 6 respectively abut against the first limiting block 4. In this embodiment, the clamping direction of the first clamping component is the same as the axial direction of the pump body 1. Specifically, when the second limiting block 5 passes through the first limiting hole 3, the direction of the clamping process between the second limiting block 5 and the first limiting hole 3 is the axial direction of the pump body 1.
[0029] Reference Figure 2 and Figure 3 In this embodiment, the flange 2 and the first limiting block 4 on the flange 2 are made of stainless steel. Stainless steel has high strength and durability, and also has a certain deformation capacity.
[0030] Reference Figure 3 and Figure 4 A stop plate 7 is fixedly connected to the end of the limiting plate 6 facing the first limiting block 4. When the pump body 1 and the flange 2 are in the second snap-fit state, the limiting block and the stop plate 7 can abut against each other, or a gap can be left due to actual assembly tolerances on site. Therefore, the stop plate 7 increases the contact area between the limiting plate 6 and the limiting block, improves the stability of the second snap-fit assembly during the snap-fit process, and further improves the stability of the connection between the pump body 1 and the flange 2. Depending on the actual situation, a reinforcing plate can be provided on the pump body 1 and / or the second snap-fit block. In this embodiment, the reinforcing plate is fixedly connected to the limiting plate 6 as an example, and the reinforcing plate is located at the end of the limiting plate 6 facing the flange 2. The reinforcing plate enhances the structural rigidity of the limiting plate 6 and improves the structural stability of the limiting plate 6.
[0031] Reference Figure 5 When the number of latching units 8 is set to four, the line connecting two latching units 8 located in opposite positions is not perpendicular. (See attached diagram.) Figure 5The lines connecting the relatively positioned snap-fit units 8 are L1 and L2, respectively. L1 and L2 intersect to form an obtuse angle β and an acute angle α. In related technologies, the snap-fit units 8 are evenly distributed along the circumference of the flange 2, meaning that the lines connecting two relatively positioned snap-fit units 8 are perpendicular to each other. This arrangement requires an additional space dimension for the outer edge of the snap-fit units 8 to protrude beyond the flange 2's diameter, resulting in a further increase in the flange 2's side diameter. Since the lines connecting the two relatively positioned snap-fit units 8 in this embodiment are not perpendicular, the non-perpendicular layout breaks the traditional symmetry constraint, reducing the area occupied by the flange 2's diameter and meeting the usage requirements in confined spaces.
[0032] The implementation principle of Embodiment 1 of this application is as follows: The operator inserts the second limiting block 5 into the first limiting hole 3, so that the pump body 1 and the flange 2 are in a first snap-fit state. At this time, the pump body 1 and the flange 2 are initially connected. When the pump body 1 needs to be tested, it is convenient for the operator to reassemble and disassemble the pump during subsequent testing. When the pump body 1 and the flange 2 need to be locked and assembled after the pump test is completed, the operator first inserts the second limiting block 5 into the first limiting hole 3 to achieve the initial connection between the pump body 1 and the flange 2. Then the operator prys open the two first limiting blocks 4 outward, that is, pry the first limiting blocks 4 toward the limiting plate 6, so that the two limiting plates 6 abut against the first limiting blocks 4 respectively, thereby achieving the locking and fixing between the pump body 1 and the flange 2.
[0033] Compared to the unidirectional limiting connection method between pump body 1 and flange 2 in related technologies, this application reduces the occurrence of axial disengagement by utilizing a dual limiting mechanism of a first and a second clamping assembly, thus reducing the possibility of loosening or unstable connection between pump body 1 and flange 2 during use. Furthermore, the unidirectional, one-time clamping design in existing technologies is prone to breakage or damage during installation and removal, and repeated clamping can cause wear on the clamping blocks and grooves, leading to unstable connection between pump body 1 and flange 2. In this embodiment, by adding a second clamping assembly, even if the first clamping assembly wears during use, the second clamping assembly provides axial limiting between flange 2 and pump body 1. This reduces the possibility of wear on existing clamping components due to repeated tightening during testing, while simultaneously improving the tightness of the fit between pump body 1 and flange 2, and enhancing the pump's sealing performance.
[0034] Example 2
[0035] The difference between Embodiment 2 and Embodiment 1 is that the first and second snap-fit blocks are integrally formed as a snap-fit assembly, meaning that the first and second snap-fit blocks are actually integrally molded into one component. The snap-fit assembly includes a first snap-fit block disposed on either the pump body 1 or the flange 2, and a second snap-fit portion includes a second snap-fit block disposed on the other. In this embodiment, the example is that the first snap-fit block is disposed on the pump body 1, and the second snap-fit portion is disposed on the flange 2. When the pump body 1 and the flange 2 are in the second snap-fit state, the first and second snap-fit blocks abut against each other.
[0036] The implementation principle of Embodiment 2 of this application is as follows: The operator inserts the first locking block into the first locking part, so that the pump body 1 and the flange 2 are in the first locking state, at which time the pump body 1 and the flange 2 are initially connected. When the pump body 1 needs to be inspected, it is convenient for the operator to reassemble and disassemble the pump during subsequent inspections. When the pump body 1 and the flange 2 need to be locked and assembled after the pump inspection is completed, the operator inserts the first locking block into the first locking part to achieve the initial connection between the pump body 1 and the flange 2. Then, the operator pries the second locking block inward, that is, pries the second locking block toward the first locking block, so that the second locking block abuts against the first locking block, thereby achieving the locking and fixing between the pump body 1 and the flange 2. Therefore, the integrated design of the first and second locking blocks makes the structure simpler and more compact, further saving space. At the same time, the design of the combined components can reduce mold development, and the integrated design can reduce the use of redundant materials by optimizing and removing unnecessary materials, thereby reducing production costs.
[0037] Example 3
[0038] The difference between Embodiment 3 and Embodiment 1 is that when the flange 2 has a second locking part on one side, the locking direction of the first locking component in this embodiment is not the same as the axial direction of the pump body 1. At this time, the size of the second limiting block 5 is smaller than the size of the first limiting hole 3, thus facilitating the provision of an assembly gap. Specifically, the operator can assemble the pump body 1 by first rotating it. Specifically, the flange 2 is placed on top of the pump body 1, and then the flange 2 is rotated so that the second limiting block 5 is inserted into the first limiting hole 3. During the locking process between the second limiting block 5 and the first limiting hole 3, the direction is along the circumference of the pump body 1. Then, the operator pries the two first limiting blocks 4 outwards, that is, pries the first limiting blocks 4 towards the limiting plate 6, so that the two limiting plates 6 abut against the first limiting blocks 4 respectively, achieving locking and fixing between the pump body 1 and the flange 2. This facilitates the assembly of the flange 2 and the pump body 1 when there is insufficient axial space, improving the flexibility of the assembly method.
[0039] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.
Claims
1. A pump, characterized in that: The pump body (1) and flange (2) are connected by a snap-fit unit (8), which includes a first snap-fit component and a second snap-fit component. When the pump body (1) and the flange (2) are connected by the first clamping assembly, the pump body (1) and the flange (2) are in a first clamping state; When the pump body (1) and the flange (2) are connected sequentially through the first clamping assembly and the second clamping assembly, the pump body (1) and the flange (2) are in a second clamping state.
2. The pump according to claim 1, characterized in that: The first clamping assembly includes a first clamping part and a first clamping block that cooperates with the first clamping part. The first clamping part is provided on one of the pump body (1) or the flange (2), and the first clamping block is provided on the other. The second clamping assembly includes a second clamping part and a second clamping block that mates with the second clamping part. The pump body (1) or the flange (2) is provided with the second clamping part and the other is provided with the second clamping block.
3. The pump according to claim 2, characterized in that: The second snap-fit portion includes at least one first limiting block (4) disposed on the pump body (1) or the flange (2), and the second snap-fit block includes a limiting plate (6) disposed on the other; when the pump body (1) and the flange (2) are in the second snap-fit state, the first limiting block (4) abuts against the limiting plate (6).
4. The pump according to claim 3, characterized in that: The number of the first limiting blocks (4) is set to two, and both of the first limiting blocks (4) are set on the flange (2). The number of the limiting plates (6) is set to two, and both of the limiting plates (6) are set on the pump body (1). The first snap-fit part includes a first limiting hole (3) opened on the flange (2). The first snap-fit block includes a second limiting block (5) set on the pump body (1). The second limiting block (5) passes through the first limiting hole (3). When the pump body (1) and the flange (2) are in the second snap-fit state, the two limiting plates (6) abut against the two first limiting blocks (4) respectively.
5. The pump according to claim 3, characterized in that: The limiting plate (6) has an abutment plate (7) at one end facing the first limiting block (4); when the pump body (1) and the flange (2) are in the second snap-fit state, the first limiting block (4) abuts against the abutment plate (7).
6. The pump according to claim 2, characterized in that: The first and second card blocks are integrated into a card assembly.
7. The pump according to claim 6, characterized in that: The snap-fit assembly includes a first snap-fit block disposed on one of the pump body (1) or the flange (2), and the second snap-fit part includes a second snap-fit block disposed on the other; when the pump body (1) and the flange (2) are in the second snap-fit state, the first snap-fit block abuts against the second snap-fit block.
8. The pump according to claim 1, characterized in that: The clamping direction of the first clamping component is the same as the axial direction of the pump body (1).
9. The pump according to claim 1, characterized in that: The clamping direction of the first clamping component is different from the axial direction of the pump body (1).
10. The pump according to claim 1, characterized in that: When the number of the latching units (8) is set to four, the line connecting the latching units (8) located in two opposite positions is not perpendicular.