Plunger pump of high-pressure cleaning machine

Abstract

The utility model provides a plunger pump of a high-pressure cleaning machine, and belongs to the technical field of high-pressure cleaning machines. The plunger pump solves the problem that the radial size of an existing plunger pump is large. The plunger pump of the high-pressure cleaning machine comprises a water outlet, a plunger, a water inlet one-way valve, a water outlet one-way valve and an overflow valve, and the water outlet, the plunger, the water inlet one-way valve, the water outlet one-way valve and the overflow valve are all arranged in the axial direction of the plunger pump. According to the structure, the axial space of the plunger pump is fully utilized, the overall internal structure is more compact, the radial size of the plunger pump is remarkably reduced, and then the overall size of the plunger pump is reduced; in the working process of the plunger pump, water flows through a flow channel in the plunger pump to take away working heat in the plunger pump, and the temperature rise of the plunger pump is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to high pressure cleaning machine technical field, especially a plunger pump of high pressure cleaning machine. BACKGROUND

[0002] The plunger pump is the most commonly used pump of the high pressure cleaning machine, which is driven by a power device to increase the pressure of ordinary water and output, so as to achieve the purpose of efficiently cleaning the ground, vehicles and other objects. The existing plunger pump generally comprises a water inlet, a water outlet, a plunger, a water inlet check valve, a water outlet check valve and an overflow valve. After the plunger works, water enters the plunger pump from the water inlet, and then flows through the water inlet check valve, a high pressure cavity and the water outlet check valve, and finally flows out from the water outlet. When the plunger pump load is abnormal, the overflow valve will automatically open to release part of the high pressure water to the low pressure side, so as to avoid continuous pressure rise.

[0003] At present, the Chinese patent network discloses a kind of plunger pump and high pressure cleaning machine

application number: 2018105205788

[0004] The utility model aims at the above-mentioned problems existing in prior art, and provides a plunger pump of high pressure cleaning machine, and the technical problems to be solved by the utility model are how to solve the problem of large radial dimension of the existing plunger pump.

[0005] The utility model can be realized by the following technical schemes.

[0006] A plunger pump of high pressure cleaning machine, comprising a water outlet, a plunger, a water inlet check valve, a water outlet check valve and an overflow valve, characterized in that the water outlet, the plunger, the water inlet check valve, the water outlet check valve and the overflow valve are arranged along the axial direction of the plunger pump.

[0007] The structure arranges the water outlet, the plunger, the water inlet check valve, the water outlet check valve and the overflow valve along the axial direction of the plunger pump to form a strip-shaped layout structure, fully utilizes the space along the axial direction of the plunger pump, and makes the overall internal structure more compact, so that the radial dimension of the plunger pump is significantly reduced, and the overall volume of the plunger pump is also reduced. In the working process of the plunger pump, water flows through the flow channel inside the plunger pump to carry away the working heat inside the plunger pump, so as to reduce the temperature rise of the plunger pump.

[0008] In the above-mentioned plunger pump of high pressure cleaning machine, the water outlet, the plunger, the water inlet check valve, the water outlet check valve and the overflow valve are arranged in parallel with each other. The structure is compact, which is conducive to the processing and assembly of the plunger pump.

[0009] In the plunger pump of the high-pressure cleaning machine, the two plungers are respectively arranged on the left and right sides inside the plunger pump, the water inlet check valve and the overflow valve are respectively arranged on the front and back sides of the upper part of the plunger, the water outlet check valve is arranged between the water inlet check valve and the overflow valve and above the plunger, and the water outlet is arranged above the water outlet check valve. The number of plungers is two, the structure is compact and light, the structure makes the water outlet, the plunger, the water inlet check valve, the water outlet check valve and the overflow valve form a long strip-shaped layout structure, the space of the plunger pump along the axial direction is fully utilized, the overall internal structure is more compact, the radial dimension of the plunger pump is significantly reduced, and the overall volume of the plunger pump is also reduced.

[0010] In the plunger pump of the high-pressure cleaning machine, the plunger pump has a water inlet communicated with the water inlet check valve, the axis of the water inlet is perpendicular to the axis of the water inlet check valve, the plunger pump has a high-pressure cavity, a high-pressure channel and a low-pressure channel, the water outlet end of the water inlet check valve and the water inlet end of the water outlet check valve are both communicated with the high-pressure cavity, and one end of the overflow valve is communicated with the high-pressure cavity through the high-pressure channel and the other end is communicated with the water inlet through the low-pressure channel. When the plunger pump works, water enters the plunger pump from the water inlet after the reciprocating movement of the plunger, and then flows through the water inlet check valve, the high-pressure cavity and the water outlet check valve in sequence, and finally flows out from the water outlet; when the load of the plunger pump is abnormal, part of the high-pressure water flows through the overflow valve through the high-pressure channel and then returns to the water outlet side through the low-pressure channel, so that the pressure is prevented from continuously rising.

[0011] In the plunger pump of the high-pressure cleaning machine, the plunger pump includes a pump body and a pump cover, the pump body has a pump body water inlet check valve hole, the pump cover has a pump cover water inlet check valve hole and a pump cover water outlet check valve hole, part of the water inlet check valve is arranged in the pump body water inlet check valve hole and the other part is arranged in the pump cover water inlet check valve hole; part of the water outlet check valve is arranged in the pump cover water outlet check valve hole, and the other part of the water outlet check valve is arranged in the water outlet.

[0012] In the plunger pump of the high-pressure cleaning machine, the water outlet is provided with a water outlet pipe, and one end of the water outlet check valve abuts against the end face of the water outlet pipe. The structure ensures the stability of the installation of the water outlet check valve.

[0013] In the plunger pump of the high-pressure cleaning machine, a sealing ring is arranged between the outer peripheral surface of the water outlet pipe and the inner wall of the water outlet, and the water outlet pipe is tightly connected with the pump cover. The arrangement of the sealing ring improves the sealing effect between the outer peripheral surface of the water outlet pipe and the inner wall of the water outlet.

[0014] Compared with the prior art, the plunger pump of the high-pressure cleaning machine has the following advantages: the water outlet, the plunger, the water inlet check valve, the water outlet check valve and the overflow valve are arranged along the axial direction of the plunger pump, a strip-shaped layout structure is formed, the space along the axial direction of the plunger pump is fully utilized, the overall internal structure is more compact, the radial dimension of the plunger pump is significantly reduced, and the volume of the plunger pump is also reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a sectional structure schematic view of the utility model.

[0016] Figure 2 is a sectional structure schematic view along Figure 1 A-A of the utility model.

[0017] Figure 3 is a three-dimensional structure schematic view of the pump body of the utility model.

[0018] In the figure, 1, water outlet; 2, plunger; 3, water inlet check valve; 4, water outlet check valve; 5, overflow valve; 6, water inlet; 7, high-pressure cavity; 8, high-pressure channel; 9, low-pressure channel; 10, pump body; 11, pump cover; 12, pump body water inlet check valve hole; 13, pump cover water inlet check valve hole; 14, pump cover water outlet check valve hole; 15, water outlet pipe; 16, sealing ring. DETAILED DESCRIPTION

[0019] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.

[0020] As Figure 1 , Figure 2 and Figure 3As shown, the plunger pump of this high-pressure cleaner includes an outlet 1, a plunger 2, an inlet check valve 3, an outlet check valve 4, and an overflow valve 5. The outlet 1, plunger, inlet check valve 3, outlet check valve 4, and overflow valve 5 are all arranged along the axial direction of the plunger pump, and the outlet 1, plunger 2, inlet check valve 3, outlet check valve 4, and overflow valve 5 are all arranged parallel to each other. The plunger pump includes a pump body 10 and a pump cover 11. The pump body 10 has a pump body inlet check valve hole 12, and the pump cover 11 has a pump cover inlet check valve hole 13 and a pump cover outlet check valve hole 14. Part of the inlet check valve 3 is located in the pump body inlet check valve hole 12, and the other part is located in the pump cover inlet check valve hole 13. Part of the outlet check valve 4 is located in the pump cover outlet check valve hole 14, and the other part of the outlet check valve 4 is located in the outlet 1. An outlet pipe 15 is provided in the outlet 1. One end of the outlet check valve 4 abuts against the end face of the outlet pipe 15. A sealing ring 16 is provided between the outer circumferential surface of the outlet pipe 15 and the inner wall of the outlet 1. The outlet pipe 15 is fastened to the pump cover 11. This structure arranges the outlet 1, plunger 2, inlet check valve 3, outlet check valve 4, and overflow valve 5 along the axial direction of the plunger pump, forming a long strip-shaped layout. This makes full use of the space along the axial direction of the plunger pump, resulting in a more compact internal structure. This significantly reduces the radial dimension of the plunger pump, thereby reducing the overall volume of the plunger pump. During operation, water flows through the internal channels of the plunger pump, carrying away the internal heat and reducing the temperature rise of the plunger pump.

[0021] In this embodiment, there are two plungers 2, which are located on the left and right sides inside the plunger pump, respectively. The inlet check valve 3 and the overflow valve 5 are located on the front and rear sides of the upper part of the plunger 2, respectively. The outlet check valve 4 is located between the inlet check valve 3 and the overflow valve 5 and above the plunger 2. The outlet 1 is located above the outlet check valve 4.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the plunger pump has an inlet 6 connected to the inlet check valve 3. The axis of the inlet 6 is perpendicular to the axis of the inlet check valve 3. The plunger pump has a high-pressure chamber 7, a high-pressure channel 8, and a low-pressure channel 9. The outlet end of the inlet check valve 3 and the inlet end of the outlet check valve 4 are both connected to the high-pressure chamber 7. One end of the overflow valve 5 is connected to the high-pressure chamber 7 through the high-pressure channel 8, and the other end is connected to the inlet 6 through the low-pressure channel 9. When the plunger pump is working, after the plunger reciprocates, water enters the plunger pump from the inlet 6. The water flows through the inlet check valve 3, the high-pressure chamber 7, and the outlet check valve 4 in sequence, and finally flows out from the outlet 1. When the plunger pump load is abnormal, some of the high-pressure water flows through the high-pressure channel 8 and then through the overflow valve 5, and then flows back to the outlet 1 side through the low-pressure channel 9 to prevent the pressure from continuously increasing.

[0023] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application or exceed the scope defined by the appended claims.

Claims

1. A plunger pump of a high-pressure washer comprising a water outlet (1), a plunger (2), a water inlet check valve (3), a water outlet check valve (4) and an overflow valve (5), characterized in that, The water outlet (1), the plunger, the water inlet one-way valve (3), the water outlet one-way valve (4) and the overflow valve (5) are arranged along the axial direction of the plunger pump.

2. A high pressure washer piston pump according to claim 1, characterized in that The water outlet (1), the plunger (2), the water inlet one-way valve (3), the water outlet one-way valve (4) and the overflow valve (5) are arranged in parallel with each other.

3. A plunger pump for a high pressure washer according to claim 1 or 2, characterised in that, The plunger (2) has two plungers (2) arranged on the left and right sides inside the plunger pump, the water inlet one-way valve (3) and the overflow valve (5) are arranged on the front and back sides of the upper part of the plunger (2), the water outlet one-way valve (4) is arranged between the water inlet one-way valve (3) and the overflow valve (5) and above the plunger (2), and the water outlet (1) is arranged above the water outlet one-way valve (4).

4. A plunger pump for a high pressure washer according to claim 1 or 2, characterised in that, The plunger pump has a water inlet (6) in communication with the water inlet one-way valve (3), the axis of the water inlet (6) is perpendicular to the axis of the water inlet one-way valve (3), the plunger pump has a high-pressure cavity (7), a high-pressure channel (8) and a low-pressure channel (9) inside, the water outlet end of the water inlet one-way valve (3) and the water inlet end of the water outlet one-way valve (4) are in communication with the high-pressure cavity (7), one end of the overflow valve (5) is in communication with the high-pressure cavity (7) through the high-pressure channel (8) and the other end is in communication with the water inlet (6) through the low-pressure channel (9).

5. A high pressure washer plunger pump according to claim 4, wherein, The plunger pump comprises a pump body (10) and a pump cover (11), the pump body (10) has a pump body water inlet one-way valve hole (12), the pump cover (11) has a pump cover water inlet one-way valve hole (13) and a pump cover water outlet one-way valve hole (14), part of the water inlet one-way valve (3) is arranged in the pump body water inlet one-way valve hole (12) and the other part is arranged in the pump cover water inlet one-way valve hole (13); part of the water outlet one-way valve (4) is arranged in the pump cover water outlet one-way valve hole (14) and the other part of the water outlet one-way valve (4) is arranged in the water outlet (1).

6. A high pressure washer plunger pump according to claim 5, wherein, The water outlet (1) is provided with a water outlet pipe (15), one end of the water outlet one-way valve (4) abuts against the end face of the water outlet pipe (15).

7. A high pressure washer plunger pump according to claim 6, wherein, A sealing ring (16) is arranged between the outer peripheral surface of the water outlet pipe (15) and the inner wall of the water outlet (1), and the water outlet pipe (15) is tightly connected with the pump cover (11).

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