A booster pump

Abstract

The utility model relates to a kind of booster pumps, solve the problems of existing technology, check valve is the independent component that each need is respectively disassembled, leading to complex operation, low efficiency, easy to lose etc., the technical scheme used: including the pump body with inlet and outlet, with the check valve of inlet or outlet cooperation, it is characterized in that the check valve includes valve core, plug, the reset spring that two ends are respectively with the valve core and the plug cooperation;The plug and valve core have assembly connection structure between, for make the valve core, the plug and reset spring first assembly into integrated structure and then be loaded into the pump body, the reset spring is limited between the valve core and the plug.Its effect: through assembly connection structure, plug, valve core and reset spring can be assembled into integrated structure before assembly, both beneficial to check valve alignment operation when assembling, also beneficial to simplify disassembly step, improve assembly efficiency, also beneficial to prevent parts loss.

Description

Technical Field

[0001] This utility model relates to the field of pumps, and more particularly to a booster pump. Background Technology

[0002] Booster pumps have entered various industries and households. They transfer the mechanical energy of the prime mover or other external energy to the liquid, increasing the liquid's energy. They are mainly used to transport liquids including water and oil.

[0003] Existing booster pumps often include check valves at their inlet or outlet to prevent backflow and maintain performance. For example, utility model patent CN209724637U discloses a vortex pump with flow stabilization function, as shown in the attached drawings. Figure 1 As shown, in Figure 1 At the left-side inlet, a check valve is installed to ensure the pump's self-priming function. This check valve consists of a valve cover located at the outer end of the inlet and mating with the pump body, a valve core located in the check channel, and a return spring located between the valve core and the valve cover. The valve core and valve cover are two independent components that do not interfere with each other. This means that each component in this type of check valve is an independent part, resulting in numerous parts during assembly and disassembly, affecting assembly efficiency and increasing the risk of missing parts. Furthermore, each component needs to be assembled and disassembled sequentially, and alignment is required during installation, making the assembly and disassembly process cumbersome and inefficient. Summary of the Invention

[0004] The purpose of this utility model is to solve the above-mentioned problems existing in the prior art by providing a booster pump. The plug and valve core have an assembly connection structure, which allows the plug, valve core and return spring to be assembled into a whole structure (i.e. assembled into a component that is not easy to separate) before assembly. Then the assembled whole structure is installed into the corresponding flow channel of the pump body. This is beneficial for the alignment of the check valve during assembly, simplifies the disassembly and assembly steps, improves assembly efficiency, and helps to avoid the individual parts being scattered during packaging and storage, thus preventing the loss of parts.

[0005] The above-mentioned technical objective of this utility model is mainly achieved through the following technical solution: a booster pump, comprising a pump body having an inlet and an outlet, and a check valve cooperating with the inlet or outlet, characterized in that the check valve comprises a valve core, a plug, and a return spring having two ends respectively cooperating with the valve core and the plug; the plug and the valve core have an assembly connection structure for assembling the valve core, the plug, and the return spring into an integral structure before installing them into the pump body, and the return spring is limited between the valve core and the plug. Adding an assembly connection structure to the valve core and plug allows the valve core, plug, and return spring to be pre-assembled into a single, non-separable component. The assembled component is then installed into the corresponding flow channels of the pump body (such as the inlet and outlet channels). This improves the accuracy of check valve assembly and greatly enhances assembly and disassembly efficiency. Furthermore, as a non-separable component, the check valve significantly reduces the number of disassembly steps during assembly or disassembly, making assembly and disassembly simpler. It also helps prevent components from being scattered during packaging and storage, thus preventing component loss.

[0006] As a further improvement and supplement to the above technical solution, the present invention adopts the following technical measures:

[0007] Preferably, the assembly connection structure enables the valve core and the plug to form an assembly connection through at least one of the following: snap-fit, hook-fit, or plug-in fit.

[0008] Preferably, the assembly connection structure includes a first connecting portion on the valve core and a second connecting portion on the stopcock, wherein the first connecting portion and the second connecting portion are engaged with a hook. The assembly connection structure disclosed in this technical solution not only improves assembly reliability and efficiency but also simplifies the structure, facilitating production, processing, and disassembly.

[0009] Preferably, the first connecting part is located on the outer wall of the valve core and extends axially outward; the second connecting part is located on the inner wall of the plug and extends axially inward. The outer end of the first connecting part is provided with a insertion hole and a retaining ring, and the inner end of the second connecting part is provided with a hook structure. The inner end of the second connecting part is inserted into the insertion hole, and the hook structure and the retaining ring form a hook-and-loop engagement. For ease of manufacturing, processing, and disassembly, the first connecting part and the valve core are integrally formed, and the second connecting part and the plug are integrally formed. Of course, it is also feasible to interchange the positions of the first and second connecting parts, placing the second connecting part on the valve core and the first connecting part on the plug.

[0010] Preferably, the return spring is sleeved on the second connecting part, with its outer end abutting against the inner wall of the valve stem and its inner end abutting against the retaining ring. The return spring ensures that the valve core always closes its designated flow channel. When the impact force of the fluid exceeds the return force of the return spring, the valve core is forced open, and the corresponding flow channel is opened for fluid flow. When the impact force of the fluid is less than the return force of the return spring, or when the impact force disappears, the valve core closes its designated flow channel under the action of the return spring.

[0011] Preferably, the second connecting part includes a columnar part with a cross-shaped cross section, and a hook structure disposed at the inner end of the columnar part. The columnar part and the valve are an integral structure, and the columnar part and the hook structure are an integral structure. There are two hook structures, which respectively cooperate with the two sides of the columnar part and are arranged corresponding to the horizontal or vertical lines of the cross shape.

[0012] Preferably, the periphery of the cross-shaped columnar portion has four axially extending grooves, which cooperate with the inner wall of the retaining ring to form four sand discharge grooves. The sand discharge grooves facilitate the smooth passage of impurities (such as silt) in the fluid through the check valve, preventing silt from getting stuck between the first and second connecting portions (especially between the columnar portion and the retaining ring). This prevents wear and jamming of the columnar portion and the retaining ring during axial movement of the valve core, thus improving the connection reliability and service life of the valve core and the plug.

[0013] Preferably, the inner end of the valve core is provided with a guide portion, which cooperates with the corresponding flow channel in the pump body to move the valve core axially, prevent the valve core from deviating radially, improve the valve core's ability to close the flow channel and achieve a check valve effect, and also help prevent the valve core from deviating and rubbing against the pump body, thereby improving the service life of the valve core.

[0014] Preferably, the check portion of the valve core is annular, and a check seal ring surrounds the periphery of the check portion. The check seal ring includes a vertical ring wall, a first inner folded ring located on the outer edge of the vertical ring wall, and a second inner folded ring located on the inner edge of the vertical ring wall. The second inner folded ring has a convex ring, and the corresponding part of the pump body has an abutment surface, which is either an abutment plane or an abutment groove. The convex ring and the abutment surface form a sealing fit. In this technical solution, the structure of the check seal ring is a significant improvement over the structure of conventional seal rings. It uses a three-sided surrounding method to seal the outer periphery of the check portion, which not only improves the assembly reliability of the check seal ring but also improves its sealing reliability. Furthermore, the convex ring further enhances the sealing reliability of the check seal ring.

[0015] Preferably, the pump body is provided with a mounting seat for mounting the cock, a sealing ring is provided between the cock and the mounting seat, and an adjustment ring is provided between the outer periphery of the cock and the pump body or the pump casing located outside the pump body. The adjustment ring is used to prevent the outer periphery of the cock from being squeezed or interfered with the pump body or the pump casing.

[0016] The beneficial effects of this utility model are as follows: 1. By adding an assembly connection structure to the valve core and the plug, the valve core, the plug and the return spring can be pre-assembled into a component that is not easy to separate. Then the assembled component is installed into the corresponding flow channel of the pump body (such as the inlet channel and the outlet channel). This helps to improve the assembly accuracy of the check valve and greatly improves the assembly and disassembly efficiency. Moreover, during the assembly or disassembly process, the check valve, as a component that is not easy to separate, greatly reduces the disassembly and assembly steps of each part, making disassembly and assembly simpler. It also helps to avoid the parts being scattered during packaging and storage, which helps to prevent the parts from being lost. 2. The second connecting part has a columnar part with a cross-shaped cross section. The cross-shaped cross section of the columnar part has four protruding ridges on the four side walls of the columnar part. The protruding ridges help to enhance the strength of the columnar part. An axial groove is formed between adjacent protruding ridges to form a sand discharge groove. The sand discharge groove is designed to allow impurities (such as silt) in the fluid to pass smoothly through the check valve, preventing silt from getting stuck between the first and second connecting parts (especially between the columnar part and the retaining ring). This prevents wear and jamming of the columnar part and the retaining ring when the valve core moves axially, and helps to improve the connection reliability and service life of the valve core and the plug. 3. The check portion of the valve core is annular, and a check sealing ring surrounds the check portion. The check sealing ring includes a vertical ring wall, a first inner folded ring on the outer edge of the vertical ring wall, and a second inner folded ring on the inner edge of the vertical ring wall. The second inner folded ring has a convex ring, and the corresponding part of the pump body has a contact surface, which is a contact plane or a contact groove. This not only helps to improve the stability of the check sealing ring surrounding the check portion, but also helps to prevent impurities from entering between the check sealing ring and the check portion, prevents jamming between the check portion and the pump body, and avoids wear on the check portion. This helps to improve the sealing reliability of the valve core and the pump body, and thus helps to ensure the check valve's check function. Attached Figure Description

[0017] Figure 1 This is a partial cross-sectional structural schematic diagram of this utility model.

[0018] Figure 2 yes Figure 1 A magnified structural diagram of part A in the middle.

[0019] Figure 3 This is a schematic diagram of a check valve involved in this utility model.

[0020] Figure 4 yes Figure 3 A schematic diagram of an explosive structure.

[0021] Figure 5 This is a schematic diagram of a type of plug involved in this utility model.

[0022] Figure 6 yes Figure 5 A structural diagram from another perspective.

[0023] In the diagram: 1. Pump body; 2. Check valve; 3. Valve core; 4. Plug; 5. Return spring; 6. First connecting part; 7. Second connecting part; 8. Insertion hole; 9. Buckle ring; 10. Hook and buckle structure; 11. Columnar part; 12. Sand discharge trough; 13. Guide part; 14. Flow channel; 15. Check part; 16. Check seal ring; 17. Vertical ring wall; 18. First inner folding ring; 19. Second inner folding ring; 20. Convex ring; 21. Sealing ring; 22. Adjusting ring; 23. Pump casing. Detailed Implementation

[0024] The technical solution of this utility model will be further described in detail below through embodiments and with reference to the accompanying drawings. In this document, for ease of description, the directions involved are defined as follows:

[0025] "Inside" refers to the direction away from the inlet or outlet, that is, the direction towards the inside of the pump body;

[0026] The direction "outward" is the opposite of the direction "inward," that is, towards the inlet or outlet.

[0027] Example: Figures 1-6 As shown, a booster pump includes a pump body 1 having an inlet and an outlet, and a check valve 2 cooperating with the inlet or outlet.

[0028] The difference between this technical solution and the prior art is that the check valve 2 includes a valve core 3, a plug 4, and a return spring 5 at both ends that cooperate with the valve core 3 and the plug 4 respectively; the plug 4 and the valve core 3 have an assembly connection structure, which is used to assemble the valve core 3, the plug 4 and the return spring 5 into a whole structure before installing them into the pump body 1, and the return spring 5 is limited between the valve core 3 and the plug 4.

[0029] In this technical solution, an assembly connection structure is added to the valve core 3 and the plug 4, so that the valve core 3, the plug 4 and the return spring 5 can be pre-assembled into a component that is not easy to separate. Then the assembled component is installed into the corresponding flow channel 14 of the pump body 1 (such as the inlet channel and the outlet channel). This is beneficial to improve the assembly accuracy of the check valve 2, and also greatly improves the assembly and disassembly efficiency. Moreover, during the assembly or disassembly process, the check valve 2, as a component that is not easy to separate, greatly reduces the disassembly and assembly steps of each part, making disassembly and assembly simpler.

[0030] In practical applications, the assembly connection structure enables the valve core 3 and the plug 4 to form an assembly connection through at least one of the following: snap-fit, hook-and-loop fit, or plug-in fit.

[0031] In practical applications, the shapes of assembly connection structures are diverse and not limited to the forms involved in this technical solution. Technical solutions for assembly connection structures formed based on the concept of this technical solution also fall within the scope of protection of this technical solution.

[0032] In practical applications, the assembly connection structure includes a first connecting part 6 on the valve core 3 and a second connecting part 7 on the stopcock 4, wherein the first connecting part 6 and the second connecting part 7 are engaged with a hook. The assembly connection structure disclosed in this technical solution not only improves assembly reliability and efficiency but also simplifies the structure and facilitates production, processing, and disassembly.

[0033] In practical applications, the first connecting part 6 is located on the outer wall of the valve core 3 and extends outward axially; the second connecting part 7 is located on the inner wall of the stopcock 4 and extends inward axially. The outer end of the first connecting part 6 is provided with a plug hole 8 and a buckle 9, and the inner end of the second connecting part 7 is provided with a hook structure 10. The inner end of the second connecting part 7 is inserted into the plug hole 8, and the hook structure 10 and the buckle 9 form a hook-and-loop engagement.

[0034] To facilitate production, processing, and disassembly, the first connecting part 6 and the valve core 3 are integrated into one structure, and the second connecting part 7 and the plug 4 are integrated into one structure.

[0035] Of course, in practical applications, it is also feasible to switch the positions of the first connecting part 6 and the second connecting part 7, with the second connecting part 7 placed on the valve core 3 and the first connecting part 6 placed on the plug 4.

[0036] In practical applications, the reset spring 5 is sleeved on the second connecting part 7, the outer end of the reset spring 5 abuts against the inner wall of the plug 4, and the inner end of the reset spring 5 abuts against the buckle 9.

[0037] In this technical solution, the return spring 5 is configured to ensure that the valve core 3 always closes its designated flow channel 14. When the impact force of the fluid is greater than the reset force of the return spring 5, the valve core 3 is forced open, and the corresponding flow channel 14 is opened for fluid flow. When the impact force of the fluid is less than the reset force of the return spring 5 or the impact force of the fluid disappears, the valve core 3 closes its designated flow channel 14 under the action of the return spring 5.

[0038] In practical applications, the second connecting part 7 includes a columnar part 11 with a cross-shaped cross section, and a hook structure 10 disposed at the inner end of the columnar part 11. The columnar part 11 and the valve 4 are an integral structure. The columnar part 11 and the hook structure 10 are an integral structure. There are two hook structures 10, which respectively cooperate with the two sides of the columnar part 11 and are arranged to correspond to the horizontal or vertical lines of the cross shape.

[0039] In this technical solution, the second connecting part 7 has a columnar part 11 with a cross-shaped cross section. The cross-shaped cross section of the columnar part 11 results in four protruding ridges on the four side walls of the columnar part 11. The protruding ridges help to enhance the strength of the columnar part 11. An axially extending groove is formed between adjacent protruding ridges. The grooves cooperate with the inner wall of the buckle 9 to form four sand discharge grooves 12.

[0040] In this technical solution, the sand discharge trough 12 is designed to allow impurities (such as silt) in the fluid to pass smoothly through the check valve 2, preventing silt from getting stuck between the first connecting part 6 and the second connecting part 7 (especially between the columnar part 11 and the retaining ring 9). This also prevents wear and jamming of the columnar part 11 and the retaining ring 9 when the valve core 3 moves axially, thereby improving the connection reliability and service life of the valve core 3 and the plug 4.

[0041] In practical applications, the cross-section of the columnar part 11 can be cross-shaped, triangular, or elliptical. As long as a gap can be formed between the side wall of the columnar part 11 and the buckle 9, it falls within the scope of protection of this technical solution.

[0042] In practical applications, the inner end of the valve core 3 is provided with a guide portion 13, which cooperates with the corresponding flow channel 14 in the pump body 1 to make the valve core 3 move axially.

[0043] Meanwhile, the guide portion 13 provided on the valve core 3 helps to prevent the valve core 3 from radially deviating, helps to improve the valve core 3's ability to close the flow channel 14 and achieve a check flow effect, and also helps to prevent the valve core 3 from deviating and accidentally rubbing against the pump body 1, thereby helping to improve the service life of the valve core 3.

[0044] In practical applications, the check portion 15 of the valve core 3 is in the shape of an annular disc, and the outer periphery of the check portion 15 is covered by a check sealing ring 16. The check sealing ring 16 includes a vertical annular wall 17, a first inner folded ring 18 disposed on the outer edge of the vertical annular wall 17, and a second inner folded ring 19 disposed on the inner edge of the vertical annular wall 17. The second inner folded ring 19 has a convex ring 20, and the corresponding part of the pump body 1 has an abutment surface. The abutment surface is an abutment plane or an abutment groove, and the convex ring 20 forms a sealing fit with the abutment surface.

[0045] In this technical solution, the structure of the check seal 16 is significantly improved compared to the structure of the conventional seal 21. It is sealed on the outer periphery of the check part 15 by a three-sided encirclement, which not only improves the assembly reliability of the check seal 16, but also improves the sealing reliability of the check seal 16. In addition, the setting of the convex ring further improves the sealing reliability of the check seal 16.

[0046] In practical applications, the pump body 1 is provided with a mounting seat for installing the plug 4, and a sealing ring 21 is provided between the plug 4 and the mounting seat. An adjustment ring 22 is provided between the outer periphery of the plug 4 and the pump body 1 or the pump housing 23 located outside the pump body 1. The adjustment ring 22 is used to prevent the outer periphery of the plug 4 from being squeezed or interfered with the pump body 1 or the pump housing 23.

[0047] In practical applications, the mounting base and the pump body 1 are an integral structure.

[0048] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Various modifications and variations can be made to the above embodiments. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A booster pump, comprising a pump body (1) having an inlet and an outlet, and a check valve (2) cooperating with said inlet or outlet, characterized in that... The check valve (2) includes a valve core (3), a plug (4), and a return spring (5) at both ends that cooperate with the valve core (3) and the plug (4) respectively. The plug (4) and the valve core (3) have an assembly connection structure, which is used to assemble the valve core (3), the plug (4) and the return spring (5) into a single structure before installing them into the pump body (1). The return spring (5) is positioned between the valve core (3) and the plug (4).

2. The booster pump according to claim 1, characterized in that... The assembly connection structure enables the valve core (3) and the plug (4) to form an assembly connection through at least one of the following: snap-fit, hook-fit, or plug-fit.

3. The booster pump according to claim 2, characterized in that... The assembly connection structure includes a first connection part (6) on the valve core (3) and a second connection part (7) on the stopcock (4), wherein the first connection part (6) and the second connection part (7) are engaged by a hook.

4. The booster pump according to claim 3, characterized in that... The first connecting part (6) is located on the outer wall of the valve core (3) and extends outward in the axial direction; the second connecting part (7) is located on the inner wall of the stopcock (4) and extends inward in the axial direction. The outer end of the first connecting part (6) is provided with a plug hole (8) and a buckle (9). The inner end of the second connecting part (7) is provided with a hook structure (10). The inner end of the second connecting part (7) is inserted into the plug hole (8). The hook structure (10) and the buckle (9) form a hook-and-loop engagement.

5. The booster pump according to claim 4, characterized in that... The reset spring (5) is sleeved on the second connecting part (7), the outer end of the reset spring (5) abuts against the inner wall of the plug (4), and the inner end of the reset spring (5) abuts against the buckle (9).

6. The booster pump according to claim 4 or 5, characterized in that... The second connecting part (7) includes a columnar part (11) with a cross-shaped cross section and a hook structure (10) disposed at the inner end of the columnar part (11). The columnar part (11) and the valve (4) are an integral structure. The columnar part (11) and the hook structure (10) are an integral structure. There are two hook structures (10), which respectively cooperate with the two sides of the columnar part (11) and are arranged corresponding to the horizontal or vertical lines of the cross shape.

7. The booster pump according to claim 6, characterized in that... The periphery of the cross-shaped column (11) has four axially extending grooves, which cooperate with the inner wall of the buckle (9) to form four sand discharge grooves (12).

8. The booster pump according to any one of claims 1-5, characterized in that... The inner end of the valve core (3) is provided with a guide part (13), which cooperates with the corresponding flow channel (14) in the pump body (1) to make the valve core (3) move axially.

9. The booster pump according to claim 1 or 2, characterized in that... The check portion (15) of the valve core (3) is in the shape of an annular disc. The outer periphery of the check portion (15) is covered by a check sealing ring (16). The check sealing ring (16) includes a vertical ring wall (17), a first inner folded ring (18) located on the outer edge of the vertical ring wall (17), and a second inner folded ring (19) located on the inner edge of the vertical ring wall (17). The second inner folded ring (19) has a convex ring (20). The corresponding part of the pump body (1) has a contact surface. The contact surface is a contact plane or a contact groove. The convex ring (20) and the contact surface form a sealing fit.

10. The booster pump according to claim 1, characterized in that... The pump body (1) is provided with a mounting seat for installing the plug (4), and a sealing ring (21) is provided between the plug (4) and the mounting seat. An adjustment ring (22) is provided between the outer periphery of the plug (4) and the pump body (1) or the pump casing located outside the pump body (1). The adjustment ring (22) is used to prevent the outer periphery of the plug (4) from being squeezed or interfered with the pump body (1) or the pump casing.

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