A pump cover plug-in structure

Abstract

This invention discloses a pump cover plug-in structure, including a pump cover and a water inlet portion disposed on a pump body. The water inlet portion is provided with a water inlet, and a first rib is protruding from the outer wall of the water inlet portion. A locking block for engaging with the first rib is provided on the inner wall of the pump cover. A first notch is opened at the top of the water inlet portion. The locking block has a first inclined surface for abutting against the first rib. The first inclined surface abuts against the first rib, causing the top of the water inlet portion to retract and deform. A movable retaining ring is fitted on the water inlet portion. A second inclined surface is provided on the movable retaining ring. The second inclined surface abuts against the top of the locking block, causing the top of the water inlet portion to retract and deform. This invention abandons the traditional threaded connection method of the pump cover and uses a locking block and the first rib to elastically engage the pump cover, achieving quick installation and disassembly. During installation, simply press the pump cover down forcefully. During disassembly, simply press the pump cover down into place first and then pull it out forcefully. This effectively improves the convenience of pump cover installation and disassembly and effectively prevents the cover from being difficult to remove.

Description

Technical Field

[0001] This invention relates to the field of water pumps, and in particular to a pump cover plug-in structure. Background Technology

[0002] A water pump is a fluid machine that transports liquids and increases their pressure. It transfers energy to the liquid by externally inputting mechanical energy, overcoming pipeline resistance and liquid level differences, and realizing liquid transportation, pressurization, circulation, and pumping.

[0003] Centrifugal pumps are a common type of water pump. Before starting a centrifugal pump, water usually needs to be added inside the pump body for it to operate normally. Existing pump bodies have a water inlet with a water inlet and a pump cover. Currently, the pump cover is usually connected to the water inlet of the pump body by a threaded connection. This connection method makes it difficult to disassemble and assemble the pump cover, and when the pump cover has not been opened for a long time, it may be difficult to open. The current installation method of the pump cover needs further improvement and perfection. Summary of the Invention

[0004] To further facilitate the installation and removal of the pump cover, this application provides a pump cover plug-in structure.

[0005] This application provides a pump cover plug-in structure, which adopts the following technical solution: A pump cover plug-in structure includes a pump cover and a water inlet portion disposed on a pump body. The water inlet portion is provided with a water inlet. A first rib is protruding from the outer wall of the water inlet portion. A locking block for engaging with the first rib is provided on the inner wall of the pump cover. A first notch is provided at the top of the water inlet portion. The locking block has a first inclined surface for abutting against the first rib. The first inclined surface abuts against the first rib, causing the top of the water inlet portion to retract and deform. A movable retaining ring is sleeved on the water inlet portion. A second inclined surface is provided on the movable retaining ring. The second inclined surface abuts against the top of the locking block, causing the top of the water inlet portion to retract and deform.

[0006] Optionally, a reset ring is provided inside the pump cover. The reset ring is adapted to the water inlet on the water inlet. After the locking block on the pump cover moves down through the first rib, the reset ring is inserted into the water inlet to drive the top of the water inlet to revert to its original shape.

[0007] Optionally, the bottom outer periphery of the reset ring has a tapered guide surface.

[0008] Optionally, the top of the card block has a third inclined surface for abutting and matching with the second inclined surface.

[0009] Optionally, the top of the movable retaining ring has a fourth inclined surface for abutting and matching with the first inclined surface.

[0010] Optionally, the movable retaining ring is annular and has a second notch on one side.

[0011] Optionally, the movable retaining ring is annular and has a through groove vertically opened on its outer periphery, and multiple through grooves are evenly distributed around the circumference.

[0012] Optionally, the outer wall of the water filling part is provided with a mounting part, the mounting part has an annular groove and a sealing ring is fitted at the annular groove.

[0013] Optionally, the locking block is horizontally slidably connected to the pump cover, and the pump cover is provided with a reset element that drives the locking block to protrude from the inner wall of the pump cover.

[0014] Optionally, the pump cover is symmetrically provided with hand-held posts on both sides, and the hand-held posts are provided with mounting grooves. The locking block is slidably connected in the mounting groove. The reset component includes a reset spring, one end of which is connected to the inner wall of the mounting groove, and the other end is connected to the slider.

[0015] In summary, this application includes at least one of the following beneficial technical effects: 1. Abandoning the traditional threaded connection method of pump cover, the pump cover adopts a snap-fit ​​method with the first rib to achieve quick installation and disassembly. During installation, simply press down the pump cover with force. During disassembly, simply press the pump cover into place first and then pull it out with force. This effectively improves the convenience of pump cover installation and disassembly and effectively prevents the cover from being difficult to remove. 2. With the help of the movable retaining ring and the second inclined surface design, after the pump cover is lowered and installed, the movable retaining ring is located above the locking block, ensuring that the locking block will contact the second inclined surface on the movable retaining ring during the subsequent pump cover is moved up and pulled out. The resulting horizontal component force can better drive the top of the water filling part to deform inward and retract, so that the pump cover can be easily removed and the pulling operation is more labor-saving. 3. The reset ring is installed after the pump cover is moved down. The reset ring is removed and inserted into the water inlet. It can effectively drive the deformation area at the top of the water inlet to move outward and reset. This can effectively prevent the deformation area at the top of the water inlet from being difficult to reset after long-term use, and ensure the firmness of the pump cover installation. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of Embodiment 1 when the pump cover is in the first state.

[0017] Figure 2 This is a three-dimensional view of the water supply section in Example 1.

[0018] Figure 3 This is a perspective view of the pump cover in Example 1.

[0019] Figure 4 This is a cross-sectional view of Embodiment 1 when the pump cover is in the second state.

[0020] Figure 5 This is a cross-sectional view of Embodiment 1 when the pump cover is in the third state.

[0021] Figure 6 This is a perspective view of the movable retaining ring in Example 1.

[0022] Figure 7 This is a perspective view of Example 2.

[0023] Figure 8 This is a cross-sectional view of Example 2.

[0024] Figure 9 This is an axial view of the retaining ring obtained in Example 3.

[0025] Figure 10 This is a cross-sectional view of Example 4.

[0026] Explanation of reference numerals in the attached figures: 1. Pump cover; 2. Water filling section; 3. Water inlet; 4. First rib; 5. Locking block; 6. First notch; 7. First inclined surface; 8. Abutting inclined surface; 9. Mounting section; 10. Annular groove; 11. Sealing ring; 12. Movable retaining ring; 13. Second inclined surface; 14. Fourth inclined surface; 15. Third inclined surface; 16. Reset ring; 17. Guide surface; 18. Second notch; 19. Hand-held column; 20. Mounting groove; 21. Reset spring; 22. Through groove; 23. Locking surface. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0028] Example 1: A pump cover plug-in structure, such as... Figures 1-3 As shown, the pump includes a pump cover 1 and a water inlet 2 disposed on the pump body. The water inlet 2 is provided with a water inlet 3, which vertically penetrates the water inlet 2. A first rib 4 is protruding from the top of the water inlet 2 and surrounds the circumference of the water inlet 2. Meanwhile, symmetrical locking blocks 5 are provided on the inner wall of the pump cover 1. The locking blocks 5 protrude from the inner wall of the pump cover 1 and are integrally formed with the pump cover 1. The locking blocks 5 are used to engage with the first rib 4 to achieve the vertical anti-detachment effect of the pump cover 1.

[0029] like Figures 1-3 As shown, a first notch 6 is provided at the top of the water filling part 2. Multiple first notches 6 are evenly distributed around the circumference of the water filling part 2. The first notch 6 penetrates the top wall of the water filling part 2 vertically and penetrates the side wall of the water filling part 2 horizontally. With the help of the design of the first notch 6, the top of the water filling part 2 has the ability to deform and shrink inward, thereby ensuring that the locking block 5 can achieve the purpose of locking through the first rib 4 when the pump cover 1 moves down.

[0030] like Figures 1-3 As shown, the bottom of the locking block 5 has a first inclined surface 7 for abutting against the first rib 4, and the outer side of the top wall of the first rib 4 has an abutting inclined surface 8 that matches the first inclined surface 7. After the first inclined surface 7 abuts against the abutting inclined surface 8 of the first rib 4, it drives the top of the water filling part 2 to retract and deform inward. In this way, during the downward movement of the pump cover 1, through the contact between the first inclined surface 7 and the abutting inclined surface 8, the downward pressure on the pump cover 1 can be decomposed into a horizontal component force, which in turn drives the top of the water filling part 2 to retract and deform inward. This makes it easier for the locking block 5 to achieve the locking purpose through the first rib 4, and the force required to press down the pump cover 1 is smaller, making the operation more labor-saving.

[0031] like Figures 1-3 As shown, an integral mounting part 9 is provided on the outside of the water filling part 2. The mounting part 9 has an annular groove 10, and a sealing ring 11 is fitted at the annular groove 10. When the pump cover 1 is lowered and inserted into the water filling part 2, the sealing ring 11 tightly abuts against the inner wall of the pump cover 1 to achieve a good seal at the connection.

[0032] like Figures 1-3 As shown, a movable retaining ring 12 is fitted around the outside of the water filling part 2. The movable retaining ring 12 has the ability to shrink inward. The movable retaining ring 12 is vertically slidably connected between the first rib 4 and the mounting part 9. In this embodiment, the vertical cross-section of the movable retaining ring 12 is triangular, that is, there is a second inclined surface 13 on the outer periphery of the bottom of the movable retaining ring 12 and a fourth inclined surface 14 on the outer periphery of the top of the movable retaining ring 12. The second inclined surface 13 is used to abut against the top of the locking block 5, thereby driving the top of the water filling part 2 to shrink inward. The fourth inclined surface 14 is used to abut against and match the first inclined surface 7 on the locking block 5. In this way, after the pump cover 1 is lowered and installed, the locking block 5 pushes the movable retaining ring 12 to the bottommost end, because the first inclined surface 7... The contact between the four inclined surfaces 14 and the first inclined surface 7 on the locking block 5 allows the locking block 5 to move below the movable retaining ring 12. This prepares for the next removal of the pump cover 1, ensuring that the locking block 5 will contact the second inclined surface 13 on the movable retaining ring 12 during the subsequent upward removal of the pump cover 1. The resulting horizontal force can better drive the top of the water filling part 2 to deform inward and retract, allowing the pump cover 1 to be removed smoothly and making the removal operation easier. In this embodiment, the top of the locking block 5 has a third inclined surface 15 for contacting and matching the second inclined surface 13, which makes the contact between the locking block 5 and the movable retaining ring 12 better and reduces damage to the movable retaining ring 12.

[0033] like Figure 1 , Figures 4-5As shown, during the downward movement of the pump cover 1, the first inclined surface 7 on the locking block 5 will contact the abutting inclined surface 8 of the first rib 4, thereby driving the top of the water filling part 2 to retract and deform inward, so that the locking block 5 on the pump cover 1 can pass through the first rib 4. After the locking block 5 passes through the first rib 4, the first rib 4 will return to its original position under the elastic recovery action of the water filling part 2 itself. At this time, the first rib 4 can play a locking role for the locking block 5 to restrict the vertical pull-out of the pump cover 1. After the pump cover 1 is pressed down and moved further, the first inclined surface 7 on the locking block 5 will contact the fourth inclined surface 14 on the movable retaining ring 12. When the movable retaining ring 12 is pushed to the bottom, Then, the locking block 5 drives the movable retaining ring 12 to retract and deform inward, and finally the locking block 5 passes through the movable retaining ring 12. At this time, the locking block 5 is located below the movable retaining ring 12. When it is necessary to disassemble the pump cover 1, when the pump cover 1 is lifted and moved upward, the pump cover 1 moves upward with the movable retaining ring 12 and contacts the first rib 4. The third inclined surface 15 on the locking block 5 abuts against the second inclined surface 13 on the movable retaining ring 12. At this time, the horizontal component force drives the top of the movable retaining ring 12 or the water filling part 2 to retract and deform inward in sync, so that the locking block 5 can be dislodged from the first rib 4, realizing the removal and disassembly of the pump cover 1, and the removal operation is more labor-saving.

[0034] like Figure 1 As shown, a reset ring 16 is provided inside the pump cover 1. The reset ring 16 is adapted to the water inlet 3 on the water inlet 2, that is, the outer diameter of the reset ring 16 is adapted to the diameter of the water inlet 3. After the locking block 5 on the pump cover 1 moves down through the first rib 4, the reset ring 16 is inserted into the water inlet 3, driving the top of the water inlet 2 to return to its original shape. This can effectively prevent the deformation area at the top of the water inlet 2 from being difficult to reset after long-term use, and ensure the firmness of the pump cover 1 installation. The bottom of the outer wall of the reset ring 16 has a conical guide surface 17. The guide surface 17 can guide the reset ring 16 during its downward movement, avoiding interference and jamming between the reset ring 16 and the water inlet 2. When the locking block 5, the movable retaining ring 12 and the first rib 4 abut against each other, the guide surface 17 and the water inlet 3 are in a corresponding state. At this time, the reset ring 16 does not affect the inward deformation of the top of the water inlet 2 (see Figure 5 ).

[0035] like Figure 6 As shown, the movable retaining ring 12 has an overall ring structure and a second notch 18 on one side. The design of the second notch 18 enables the movable retaining ring 12 to have better inward deformation capability, thereby reducing the force required for the pump cover 1 to be inserted and removed, making the operation more labor-saving and convenient.

[0036] Example 2, a pump cover plug-in structure, such as Figure 7 and Figure 8As shown, the difference between this embodiment and Embodiment 1 lies in the structure of the locking block 5. In this embodiment, the locking block 5 is horizontally slidably connected to the pump cover 1. Hand-held posts 19 are symmetrically arranged on both sides of the pump cover 1, and the hand-held posts 19 are integrally formed with the pump cover 1. The hand-held posts 19 are for the operator to hold, thus providing a point of leverage and making it easier for the operator to perform vertical insertion and removal operations on the pump cover 1. An installation groove 20 is formed inside the hollow part of the hand-held post 19, and the locking block 5 is horizontally and radially slidably connected within the installation groove 20. A driving locking block 5 is provided within the installation groove 20. The resetting component protrudes from the inner wall of the pump cover 1. The resetting component adopts a resetting spring 21. One end of the resetting spring 21 is connected to the inner wall of the mounting groove 20, and the other end is connected to the locking block 5. This allows the locking block 5 to have the ability to move horizontally. In the actual disassembly and assembly process, it does not have to rely entirely on the deformation of the top of the water filling part 2. It can be achieved by the horizontal movement of the locking block 5. This can make the degree of inward deformation of the top of the water filling part 2 smaller, which can effectively prevent the situation where the deformation is too large and it is difficult to restore later. In addition, it also makes the force required during operation smaller, achieving the purpose of saving effort.

[0037] Example 3, a pump cover plug-in structure, such as Figure 9 As shown, the main difference between this embodiment and Embodiment 1 lies in the structure of the movable retaining ring 12. In this embodiment, the movable retaining ring 12 is a closed ring structure, and a through groove 22 is vertically provided on the outer wall of the movable retaining ring 12. The through groove 22 penetrates the top and bottom walls of the movable retaining ring 12, and multiple through grooves 22 are evenly distributed around the circumference. In this way, the wall thickness of the movable retaining ring 12 in the corresponding area can be reduced by the setting of the through groove 22, thereby enabling the movable retaining ring 12 to have better inward deformation capability.

[0038] Example 4: A pump cover plug-in structure, such as... Figure 10 As shown, the difference between this embodiment and Embodiment 1 lies in the different structure of the locking block 5. In this embodiment, the top wall of the locking block 5 has a horizontal locking surface 23. With the setting of the locking surface 23, the pump cover 1 cannot be dislodged from the water filling part 2 without relying on the movable retaining ring 12, which further demonstrates the important significance of the design of the movable retaining ring 12.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pump cover plug-in structure, characterized in that: The pump includes a pump cover (1) and a water inlet (2) provided on the pump body. The water inlet (2) is provided with a water inlet (3). The outer wall of the water inlet (2) is provided with a first rib (4). The inner wall of the pump cover (1) is provided with a locking block (5) for engaging with the first rib (4). The top of the water inlet (2) is provided with a first notch (6). The locking block (5) has a first inclined surface (7) for abutting against the first rib (4). The first inclined surface (7) abuts against the first rib (4) to drive the top of the water inlet (2) to shrink and deform inward. A movable retaining ring (12) is sleeved on the water inlet (2). The movable retaining ring (12) is provided with a second inclined surface (13). The second inclined surface (13) abuts against the top of the locking block (5) to drive the top of the water inlet (2) to shrink and deform inward.

2. The pump cover plug-in structure according to claim 1, characterized in that: The pump cover (1) is provided with a reset ring (16) inside. The reset ring (16) is adapted to the water inlet (3) on the water inlet (2). After the locking block (5) on the pump cover (1) moves down through the first rib (4), the reset ring (16) is inserted into the water inlet (3) to drive the top of the water inlet (2) to revert to its original shape.

3. The pump cover plug-in structure according to claim 2, characterized in that: The bottom outer periphery of the reset ring (16) has a tapered guide surface (17).

4. A pump cover plug-in structure according to claim 1 or 3, characterized in that: The top of the card block (5) has a third inclined surface (15) for abutting and matching with the second inclined surface (13).

5. The pump cover plug-in structure according to claim 1, characterized in that: The top of the movable retaining ring (12) has a fourth inclined surface (14) for abutting and matching with the first inclined surface (7).

6. The pump cover plug-in structure according to claim 1, characterized in that: The movable retaining ring (12) is annular and has a second notch (18) on one side.

7. The pump cover plug-in structure according to claim 1, characterized in that: The movable retaining ring (12) is annular and has a through groove (22) vertically opened on its outer periphery. Multiple through grooves (22) are evenly distributed around the circumference.

8. The pump cover plug-in structure according to claim 1, characterized in that: The outer wall of the water filling part (2) is provided with a mounting part (9), and the mounting part (9) has an annular groove (10) and a sealing ring (11) is fitted at the annular groove (10).

9. The pump cover plug-in structure according to claim 1, characterized in that: The locking block (5) is horizontally slidably connected to the pump cover (1), and the pump cover (1) is provided with a reset member that drives the locking block (5) to protrude from the inner wall of the pump cover (1).

10. A pump cover plug-in structure according to claim 9, characterized in that: The pump cover (1) is symmetrically provided with hand-held posts (19) on both sides. The hand-held posts (19) are provided with mounting grooves (20). The locking block (5) is slidably connected in the mounting groove (20). The reset component includes a reset spring (21). One end of the reset spring (21) is connected to the inner wall of the mounting groove (20), and the other end is connected to the locking block (5).

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