Pump body structure of plunger pump

Abstract

The utility model provides a pump body structure of a plunger pump, and belongs to the technical field of plunger pumps. The technical problem that a pump body structure of an existing plunger pump is insufficient in working stability is solved. In the pump body structure of the plunger pump, the side face of a pump body is provided with a plurality of plunger holes which are formed at intervals, the side face of the other side of the pump body is provided with a plurality of liquid inlet holes which directly face and are communicated with the plunger holes, and a liquid discharging flow channel is formed in the pump body below the liquid inlet holes. The liquid discharging flow channel is separated from the liquid inlet hole, the outlet end of the liquid discharging flow channel is located on the surface of the pump body, and the inner wall of the liquid discharging flow channel is provided with a plurality of hole channels only communicated with the plunger hole. According to the utility model, better working stability can be guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of plunger pumps and relates to a pump body structure of a plunger pump. Background Art

[0002] Existing spray cleaning machines generally include a cylinder body with a cavity, a water inlet and a water outlet inside, and an air chamber bottle screwed and fixed to the cylinder body by fasteners. The cylinder body cooperates with a plunger to draw in and press out liquid through the reciprocating motion of the plunger.

[0003] For example, the applicant has previously developed an air chamber bottle for a spray cleaning machine with an authorization announcement number of CN218742615U, in which the spray cleaning machine includes a cylinder body with a cavity inside, the cylinder body has a water inlet and a water outlet connected to the cavity, the air chamber bottle includes a bottle body with an air storage cavity inside, the bottle body is provided with a connecting part with a connecting cavity inside, and the air storage cavity is connected to the connecting cavity, the connecting part is provided with a water hole connected to the connecting cavity, the connecting part is fixed on the cylinder body and is connected to the cavity of the cylinder body through the water hole.

[0004] During the operation of the plunger of the above device, high-pressure liquid may seep into the periphery of the plunger and affect the sealing effect. Long-term use may also easily affect the working stability of the plunger pump. Summary of the invention

[0005] The utility model aims at the above problems existing in the prior art and provides a pump body structure of a plunger pump. The technical problem to be solved by the utility model is that the existing plunger pump has insufficient working stability.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A pump body structure of a plunger pump, wherein the side of the pump body has a plurality of plunger holes arranged at intervals, characterized in that the other side of the pump body has a plurality of liquid inlet holes directly connected to the plunger holes, and the pump body below the liquid inlet holes has a drainage channel, the drainage channel is separated from the liquid inlet holes and the outlet end of the drainage channel is located on the surface of the pump body, and the inner wall of the drainage channel has a plurality of channels connected only to the plunger holes.

[0008] The plunger hole on the pump body is used to accommodate the movable plunger to slide back and forth inside to draw the liquid into the box and press it out of the pump chamber. By setting the liquid inlet hole on the other side of the pump body and facing the plunger hole, the drawn liquid can occupy the space created by the withdrawal of the plunger more quickly, thereby increasing the liquid intake in a short period of time. The discharge channel is connected to the inner wall of the plunger pump only through the channel. In this way, the high-pressure liquid invading the periphery of the plunger can be effectively discharged in the discharge channel from the low-pressure environment, thereby avoiding affecting the normal activity of the plunger component and ensuring working stability.

[0009] In the pump body structure of the plunger pump, the pump body also has a branch channel, one end of which is connected to the discharge channel, and the other end of which is located on the side of the pump body on the side where the liquid inlet hole is located. In this way, the branch channel can also be used as a path for high-pressure liquid discharge, and the branch channel is closer to the liquid inlet hole. The user can choose to block the external port of the discharge channel and use the branch channel to send the discharged liquid to the liquid inlet hole for reflux, or block the port of the branch channel according to actual conditions.

[0010] In the pump body structure of the plunger pump, the drainage channel is arranged along the arrangement direction of the plurality of plunger holes and is located directly below the plunger holes. In this way, the drainage channel is closer to the plunger holes, which is conducive to reducing the resistance of high-pressure liquid flowing into the drainage channel and ensuring smooth drainage.

[0011] In the pump body structure of the plunger pump, the branch channel and the discharge channel are both in the shape of straight strips, and the axis of the branch channel is perpendicular to the axis of the discharge channel, which is conducive to reducing the process cost of the pump body and making the liquid flow smoothly.

[0012] In the pump body structure of the plunger pump, the other side of the pump body has a mounting plane, and the liquid inlet hole and the other end port of the branch flow channel are both located on the mounting plane. The liquid inlet hole is used to install a one-way valve, and the mounting plane is conducive to fixing the end cover structure that limits the one-way valve, so that the liquid discharged from the branch flow channel port is directly sent to the liquid inlet hole through the flow channel in the end cover structure to realize reflux or be blocked by the end cover, which is conducive to improving the compactness of the structure.

[0013] Compared with the prior art, the advantages of the utility model are as follows:

[0014] The pump body structure of the plunger pump is conducive to enabling the drawn liquid to occupy the space created by the withdrawal of the plunger more quickly, thereby increasing the amount of liquid inlet in a short period of time, and the discharge channel is connected to the inner wall of the plunger pump only through a hole, so that the high-pressure liquid invading the periphery of the plunger can be effectively discharged in the discharge channel in the low-pressure environment, avoiding affecting the normal activity of the plunger components and ensuring working stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of this embodiment.

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure from another angle of this embodiment.

[0017] Figure 3 2 is a front view of the structure of the present embodiment.

[0018] Figure 4 yes Figure 3 AA section diagram in .

[0019] In the figure, 1, pump body; 2, plunger hole; 3, liquid inlet hole; 4, discharge channel; 5, hole channel; 6, branch channel; 7, installation plane. DETAILED DESCRIPTION

[0020] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0021] like Figure 1-4 As shown, the pump body structure of the plunger pump has three plunger holes 2 arranged at intervals on the side of the pump body 1, and the other side of the pump body 1 has three liquid inlet holes 3 corresponding to and connected to the plunger holes 2. The pump body 1 below the liquid inlet holes 3 has a drainage channel 4, which is separated from the liquid inlet holes 3 and the outlet end of the drainage channel 4 is located on the surface of the pump body 1, and the inner wall of the drainage channel 4 has three channels 5 that are only connected to the plunger holes 2. The plunger hole 2 on the pump body 1 is used to accommodate the movable plunger to slide back and forth inside to pump the liquid into the box and press it out of the pump chamber. By setting the liquid inlet hole 3 on the other side of the pump body 1 and facing the plunger hole 2, it is beneficial for the pumped liquid to occupy the space created by the plunger retreating more quickly, thereby increasing the liquid intake in a short period of time. The discharge channel 4 is only connected to the inner wall of the plunger pump through the hole 5, so that the high-pressure liquid invading the periphery of the plunger can be effectively discharged in the discharge channel 4 in the low-pressure environment, avoiding affecting the normal activity of the plunger components and ensuring working stability. The pump body 1 also has a branch channel 6, one end of which is connected to the discharge channel 4, and the other end of the branch channel 6 is located on the side of the pump body 1 where the liquid inlet hole 3 is located. In this way, the branch channel 6 can also be used as a path for high-pressure liquid discharge, and the branch channel 6 is closer to the position of the liquid inlet hole 3. The user can choose to block the external port of the discharge channel 4 and use the branch channel 6 to send the discharged liquid to the liquid inlet hole 3 to achieve reflux, or block the port of the branch channel 6 according to the actual situation. Specifically, the discharge channel 4 is arranged along the arrangement direction of a plurality of plunger holes 2 and is located directly below the plunger hole 2. In this way, the discharge channel 4 is closer to the plunger hole 2, which is conducive to reducing the resistance of the high-pressure liquid flowing into the discharge channel 4 and ensuring smooth discharge. The branch channel 6 and the discharge channel 4 are both straight strips, and the axis of the branch channel 6 is perpendicular to the axis of the discharge channel 4. This is conducive to reducing the process cost of the pump body 1 and making the liquid flow smoothly. The other side of the pump body 1 has a mounting plane 7, and the other end ports of the liquid inlet hole 3 and the branch channel 6 are both located on the mounting plane 7. The liquid inlet hole 3 is used to install a one-way valve, and the installation plane 7 is conducive to fixing the end cover structure that limits the one-way valve. This is conducive to directly sending the liquid discharged from the port of the branch channel 6 to the liquid inlet hole 3 through the flow channel in the end cover structure to achieve reflux or to block it by the end cover, which is conducive to improving the compactness of the structure.

[0022] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A pump body structure of a plunger pump, wherein the side of the pump body (1) has a plurality of plunger holes (2) arranged at intervals, characterized in that: The other side of the pump body (1) has a plurality of liquid inlet holes (3) which are directly connected to the plunger hole (2); the pump body (1) below the liquid inlet holes (3) has a liquid discharge channel (4); the liquid discharge channel (4) is separated from the liquid inlet holes (3) and the outlet end of the liquid discharge channel (4) is located on the surface of the pump body (1); the inner wall of the liquid discharge channel (4) has a plurality of channels (5) which are only connected to the plunger hole (2).

2. The pump body structure of the plunger pump according to claim 1, characterized in that: The pump body (1) also has a branch channel (6), one end of which is connected to the discharge channel (4), and the other end of which is located on the side of the pump body (1) where the liquid inlet hole (3) is located.

3. The pump body structure of the plunger pump according to claim 2, characterized in that: The drainage channel (4) is arranged along the arrangement direction of the plurality of plunger holes (2) and is located directly below the plunger holes (2).

4. The pump body structure of the plunger pump according to claim 3, characterized in that: The branch flow channel (6) and the drainage flow channel (4) are both in the shape of straight strips, and the axis center line of the branch flow channel (6) is perpendicular to the axis center line of the drainage flow channel (4).

5. The pump body structure of the plunger pump according to claim 2, 3 or 4, characterized in that: The other side of the pump body (1) has a mounting plane (7), and the liquid inlet hole (3) and the other end port of the branch flow channel (6) are both located on the mounting plane (7).

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