Hand oil pump with one-way valve

Abstract

The one-way valve hand oil pump comprises a pump body shell, an umbrella-shaped valve, a valve seat and a disc seat, a circulation opening is formed in the pump body shell, the disc seat is fixed to the pump body shell through a screw and seals the circulation opening, a groove hole corresponding to the circulation opening is formed in the disc seat, the valve seat is clamped and fixed in the groove hole, and a through hole is formed in the valve seat. An umbrella cap of the umbrella-shaped valve is installed on the valve seat in a penetrating mode towards the circulation opening and covers the end, close to the circulation opening, of the through hole. According to the utility model, the disc seat is converted into a detachable form, the disc seat and the pump body shell can be overhauled and maintained through the dismounting screws, the reversibility of the installation of the umbrella-shaped valve is ensured, the timely troubleshooting and repairable work is facilitated, meanwhile, the valve seat can be overhauled in a manner of dismounting the disc seat, the possibility of faults is reduced, and the working efficiency is improved. The service life of the valve seat is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of mobile game pumps, and in particular to a one-way valve hand oil pump. Background Technology

[0002] Diesel filters, as an important lifespan-guarantee component in the fuel supply system of commercial vehicles, are generally divided into two categories: one is the fuel pre-filter installed at the front end of the fuel pump, whose main function is to remove water, large particulate impurities, etc. from the fuel; the other is the fuel fine filter installed at the rear end of the fuel pump, whose main function is to remove small particulate impurities from the fuel.

[0003] Current check valve assemblies typically consist of a valve seat and an umbrella valve. The check valve assembly is then press-fitted or snap-fitted onto the integrated disc of the hand pump body. Whether press-fitted or snap-fitted, these assembly methods are irreversible. If the hand pump fails to maintain pressure, it may be irreparable, leading to a surge in product costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an integrated one-way valve hand pump to solve the problem that the umbrella valve on the one-way valve may not be removable and replaceable.

[0005] Based on the technical problems existing in the background art, this utility model proposes a one-way valve hand oil pump, including a pump body shell, an umbrella valve, a valve seat and a disc seat. The pump body shell has a flow port. The disc seat is fixed to the pump body shell by screws and seals the flow port. A slot corresponding to the flow port is opened in the disc seat. The valve seat is fixed in the slot. The valve seat has a through hole. The umbrella cap of the umbrella valve is installed through the valve seat facing the flow port and covers the end of the through hole near the flow port.

[0006] Preferably, the valve seat has a central hole, the umbrella valve has a barb on the outer wall of the stem, the minimum distance between the barb and the umbrella cap of the umbrella valve is slightly greater than the thickness of the valve seat, and the umbrella valve is limited by the barb through the central hole.

[0007] Preferably, the umbrella valve has a cap body at the end away from the umbrella cap, and the diameter of the cap body is smaller than that of the umbrella valve stem.

[0008] Preferably, a sealing element is sandwiched between the disc base and the pump body housing.

[0009] Preferably, the umbrella valve is made of rubber.

[0010] Preferably, the edge of the slot is provided with an annular groove with a diameter larger than that of the slot, and an annular step is formed between the annular groove and the slot. A ring sleeve is connected to the valve seat, and the ring sleeve can be locked in the annular groove.

[0011] Preferably, the valve seat is basin-shaped, with the diameter of the basin opening being larger than the diameter of the basin bottom, and the diameter of the slot being larger than the diameter of the basin bottom but smaller than the diameter of the basin opening.

[0012] Preferably, the outer ring of the ring sleeve is an outwardly convex arc shape, and the ring sleeve is elastic.

[0013] Preferably, the annular groove is connected to a finger groove on its side, and the depth of the finger groove is less than the depth of the annular groove.

[0014] Compared with the prior art, the one-way valve hand oil pump proposed in this utility model adopts the above technical solution and achieves the following technical effects:

[0015] This invention converts the disc seat into a detachable form, allowing for inspection and maintenance between the disc seat and the pump body housing via disassembly screws. This ensures the reversibility of the umbrella valve installation, facilitating timely troubleshooting and repair. Furthermore, the valve seat can be inspected by disassembling the disc seat, reducing the likelihood of malfunctions and extending its service life. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the valve seat and disc seat installation structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the valve seat structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the umbrella-shaped valve structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the valve seat and disc seat combination structure of this utility model. Figure 1 ;

[0021] Figure 6 This is a schematic diagram of the valve seat and disc seat combination structure of this utility model. Figure 2 .

[0022] In the diagram: 1. Pump housing; 2. Umbrella valve; 3. Valve seat; 4. Disc seat; 11. Flow port; 41. Slot; 31. Through hole; 23. Umbrella cap; 32. Round hole; 21. Rod; 22. Barb; 24. Cap body; 5. Seal; 42. Ring groove; 33. Ring sleeve; 421. Finger groove. Detailed Implementation

[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0024] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] Example

[0026] Please refer to Figures 1 to 6 This utility model proposes a one-way valve hand pump, including a pump body shell 1, an umbrella valve 2, a valve seat 3, and a disc seat 4. The pump body shell 1 has a flow port 11 with a sufficiently large space. The disc seat 4 is fixed to the pump body shell 1 at its edge by screws. The disc seat 4 and the pump body shell 1 can be disassembled by removing screws. The disc seat 4 is fitted onto the flow port 11 of the pump body shell 1 in a cover-like state. A sealing element 5 is clamped between the disc seat 4 and the pump body shell 1 to increase the sealing effect between them. Multiple slots 41 are opened on the disc seat 4 corresponding to the position of the flow port 11. The slots 41 penetrate the disc seat 4, and the valve seat 3 is secured in the slots 41. The valve seat 3 is fixed in the slot 41. Multiple slots 41 are provided on the valve seat 3. The upper edge of the valve seat 3 needs to be flush with the edge of the slot 41 to avoid the oil not being able to flow out completely from the through hole 31 on the valve seat 3 due to the drop. An umbrella valve 2 is installed in the round hole 32 at the center of the valve seat 3. The umbrella valve 2 is composed of a rod body 21 with an umbrella cap 23 and a cap body 24 connected to both ends respectively. The umbrella cap 23 has a larger area. The umbrella cap 23 of the umbrella valve 2 is installed on the valve seat 3 through the flow port 11 and covers the end of the round hole 32 near the flow port 11, so that the oil can only flow towards the flow port 11.

[0027] In the above scheme, the umbrella valve 2 is made of rubber, which will age or be damaged after long-term use. Therefore, in this application, the valve seat 3 is disassembled and maintained by disassembling the disc seat 4.

[0028] In a further embodiment, reference is made to Figure 5 , Figure 6 In this application, the valve seat 3 is installed in the slot 41 of the disc seat 4. The valve seat 3 and the disc seat 4 can also be combined together, that is, the valve seat 3 and the disc seat 4 are integrated. A through hole 31 is directly provided on the disc seat 4 at the position corresponding to the flow port 11. At the same time, a round hole 32 is provided to install the umbrella valve 2. The umbrella cap 23 of the umbrella valve 2 can cover the through hole 31. At this time, the valve seat 3 will not detach from the disc seat 4. At the same time, the umbrella valve 2 can be directly inspected or replaced by disassembling the disc seat 4.

[0029] In a specific embodiment, refer to Figures 2 to 4 A circular hole 32 is provided in the center of the valve seat 3. A barb 22 is provided on the outer wall of the rod 21 of the umbrella valve 2. Since the umbrella valve 2 is made of rubber, it has a certain elasticity and extensibility. The cap 24 of the umbrella valve 2 is inserted into the end of the circular hole 32 of the valve seat 3 towards the flow port 11, so that the cap 24 protrudes from the end of the circular hole 32 away from the flow port 11. In this application, the rod 21 of the umbrella valve 2 is relatively long, so the umbrella valve 2 may slide on the through hole 31. Therefore, a barb 22 is provided on the rod 21 of the umbrella valve 2. After the rod 21 of the umbrella valve 2 passes through the through hole 31, the barb 22 will be locked with the port of the through hole 31. At this time, the umbrella valve 2 will be stably positioned on the through hole 31.

[0030] In a specific embodiment, refer to Figure 2 The edge of the slot 41 has an annular groove 42 with a diameter larger than that of the slot 41, forming an annular step between the annular groove 42 and the slot 41. A ring sleeve 33 is connected to the valve seat 3, and the ring sleeve 33 can be locked in the annular groove 42. The ring sleeve 33 is provided on the valve seat 3 to prevent the valve seat 3 from moving towards the flow port 11 and falling off. At the same time, the ring sleeve 33 is made of rubber, which can be inserted into the annular groove 42 to limit the valve seat 3 and prevent the valve seat 3 from falling off.

[0031] In a specific embodiment, refer to Figure 2 The valve seat 3 is basin-shaped. The diameter of the basin opening of the valve seat 3 is larger than the diameter of the basin bottom. The diameter of the slot 41 is larger than the diameter of the basin bottom but smaller than the diameter of the basin opening. When the valve seat 3 is installed in the slot 41, there is always one part of the valve seat 3 that is the same as the diameter of the slot 41. Press the valve seat 3 firmly so that the valve seat 3 can be fixed in the slot 41.

[0032] In a specific embodiment, refer to Figure 2 , Figure 3 The outer ring of the ring sleeve 33 is an outwardly convex arc shape. The ring sleeve 33 is elastic, and its outer arc shape can achieve a locking effect within the ring groove 42.

[0033] In a specific embodiment, refer to Figure 2 The annular groove 42 is connected to a finger groove 421 on its side. The depth of the finger groove 421 is less than the depth of the annular groove 42. The finger groove 421 allows personnel to easily remove the valve seat 3 from the disc seat 4 by pinching the ring sleeve 33 with their fingers.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A one-way valve hand pump, characterized in that, The system includes a pump housing (1), an umbrella valve (2), a valve seat (3), and a disc seat (4). The pump housing (1) has a flow port (11). The disc seat (4) is fixed to the pump housing (1) with screws and seals the flow port (11). The disc seat (4) has a slot (41) corresponding to the flow port (11). The valve seat (3) is fixed in the slot (41). The valve seat (3) has a through hole (31). The umbrella cap (23) of the umbrella valve (2) is installed through the valve seat (3) facing the flow port (11) and covers the end of the through hole (31) near the flow port (11).

2. The one-way valve hand pump according to claim 1, characterized in that, The valve seat (3) has a circular hole (32) at its center. The rod (21) of the umbrella valve (2) has a barb (22) on its outer wall. The minimum distance between the barb (22) and the umbrella cap (23) of the umbrella valve (2) is slightly greater than the thickness of the valve seat (3). The umbrella valve (2) passes through the circular hole (32) and is limited by the barb (22).

3. The one-way valve hand pump according to claim 1, characterized in that, The umbrella valve (2) has a cap body (24) at one end away from the umbrella cap (23), and the diameter of the cap body (24) is smaller than the diameter of the rod body (21) of the umbrella valve (2).

4. The one-way valve hand pump according to claim 1, characterized in that, A sealing element (5) is sandwiched between the disc base (4) and the pump body shell (1).

5. The one-way valve hand pump according to claim 1, characterized in that, The umbrella valve (2) is made of rubber.

6. The one-way valve hand pump according to claim 2, characterized in that, The edge of the slot (41) is provided with an annular groove (42) with a diameter larger than that of the slot (41). An annular step is formed between the annular groove (42) and the slot (41). A ring sleeve (33) is connected to the valve seat (3). The ring sleeve (33) can be locked in the annular groove (42).

7. The one-way valve hand pump according to claim 6, characterized in that, The valve seat (3) is basin-shaped, with the diameter of the basin opening being larger than the diameter of the basin bottom, and the diameter of the slot (41) being larger than the diameter of the basin bottom but smaller than the diameter of the basin opening.

8. The one-way valve hand pump according to claim 6, characterized in that, The outer ring of the ring sleeve (33) is an outwardly convex arc shape, and the ring sleeve (33) is elastic.

9. The one-way valve hand pump according to claim 6, characterized in that, The annular groove (42) is connected to a finger groove (421) on its side, and the depth of the finger groove (421) is less than the depth of the annular groove (42).

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