CN216741966U

CN216741966U - Plunger pump of high-pressure cleaning machine

Info

Publication number: CN216741966U
Application number: CN202220303690.8U
Authority: CN
Inventors: 朱蔚
Original assignee: Ningbo Huaxun Cleaning Machinery Co ltd
Current assignee: Ningbo Huaxun Cleaning Machinery Co ltd
Priority date: 2022-02-15
Filing date: 2022-02-15
Publication date: 2022-06-14
Anticipated expiration: 2032-02-15

Abstract

The utility model relates to the technical field of plunger pumps, in particular to a plunger pump of a high-pressure cleaning machine. Including the pump body (1), plunger frame (2) and plunger (3), be provided with through-hole (7) that supply plunger (3) to pass on plunger frame (2), its characterized in that: an annular groove (8) is formed in the outer peripheral surface of the plunger (3), an annular sealing ring (9) is installed in the annular groove (8), and the annular sealing ring (9) is pressed between the annular groove (8) and the inner wall of the through hole (7). The plunger pump has simple structure and low cost.

Description

Plunger pump of high-pressure cleaning machine

Technical Field

The utility model relates to the technical field of plunger pumps, in particular to a plunger pump of a high-pressure cleaning machine.

Background

The plunger pump is an important component of the high-pressure washer. The plunger reciprocates in the cylinder body to change the volume of the sealed working cavity so as to absorb and press oil. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency, convenient flow regulation and the like.

As shown in figure 1, the plunger pump in the prior art comprises a pump body, a plunger frame and a plunger, wherein the plunger and the plunger frame in the prior art are sealed mainly by a plastic guide ring, a rubber water seal arranged on one side of the plastic guide ring and a rubber oil seal arranged on the other side of the plastic guide ring, so that the structure is complex and the cost is high.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is as follows: the plunger pump of the high-pressure cleaning machine is simple in structure and low in cost.

The technical scheme adopted by the utility model is as follows: the utility model provides a high pressure cleaner plunger pump, includes the pump body, plunger frame and plunger, be provided with the through-hole that supplies the plunger to pass on the plunger frame, set up the ring channel on the outer peripheral face of plunger, install ring seal in the ring channel, ring seal pressure equipment is between ring channel and through-hole inner wall.

Preferably, the through hole extends downward to form a first extension portion through which the plunger passes.

Preferably, the first extension extends downwardly to form a second extension through which the plunger passes.

Preferably, the thickness of the second extension portion is smaller than that of the first extension portion.

Preferably, the number of the plungers is three, the number of the through holes is three, and the three through holes are uniformly arranged on the plunger frame along the circumference.

Preferably, reinforcing ribs are arranged among the three first extending parts.

Preferably, the ratio of the depth of the annular groove to the diameter of the plunger is 0.2-0.25.

Compared with the prior art, the utility model has the following advantages by adopting the structure: the sealing structure formed by the plastic guide ring, the rubber water seal and the rubber oil seal is changed into the annular groove and the annular sealing ring, so that parts are reduced, the structure is simplified, and the cost is reduced.

A first extension portion is arranged, so that when the plunger reciprocates on the plunger frame, the reliability of the plunger frame is high.

A second extension is provided so that the plunger holder is more reliable when the plunger reciprocates on the plunger holder.

The thickness of the first extension part is made larger than that of the second extension part, so that the purpose of enhancing the reliability of the plunger frame is achieved, the integral installation is not influenced, and the cost is low.

Be provided with the strengthening rib between the three first extension, three global strength is higher like this.

The groove depth is made into the proportion, so that the sealing effect is higher, and the integral strength of the plunger is not influenced.

Drawings

FIG. 1 is a cross-sectional view of a prior art high pressure washer plunger pump.

Fig. 2 is a cross-sectional view of the high pressure washer plunger pump of the present invention.

Fig. 3 is a schematic structural diagram of a plunger in the plunger pump of the high pressure washer of the present invention.

Fig. 4 is a schematic structural diagram of a plunger rack in the plunger pump of the high-pressure washer according to the utility model.

As shown in the figure: 1. a pump body; 2. a plunger frame; 3. a plunger; 4. a plastic guide ring; 5. rubber water seal; 6. a rubber oil seal; 7. a through hole; 8. an annular groove; 9. an annular seal ring; 10. a first extension portion; 11. a second extension portion; 12. and (5) reinforcing ribs.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

The first embodiment is as follows:

the utility model provides a high pressure cleaner plunger pump, as shown in fig. 2, from the top down includes pump body 1, plunger frame 2 and hydro-cylinder in proper order, is formed with the plunger chamber between the three, and plunger 3 sets up at plunger intracavity reciprocating motion, wherein:

the plunger rack 2 is provided with through holes 7 for the plungers 3 to pass through as shown in fig. 4, and the number of the through holes 7 is three and is uniformly arranged on the plunger rack 2;

as shown in fig. 3, the plunger 3 is provided with an annular groove 8 in the middle, an annular sealing ring 9 is sleeved in the annular groove 8, and when the plunger 3 works, the inner end of the annular sealing ring 9 abuts against the bottom of the annular groove 8, and the outer end of the annular sealing ring abuts against the inner wall of the through hole 7, so that the sealing effect is realized. And the ratio of the groove depth of the annular groove 8 to the diameter of the plunger 3 is 0.2, so that the integral strength of the plunger 3 is not influenced, and the poor sealing effect caused by too small size is avoided.

Example two:

the difference from the first embodiment is that in the second embodiment, the first extending portion 10 is further disposed below the through hole 7, and the first extending portion 10 is integrally formed with the plunger frame 2, so that the structural strength of the through hole 7 matching with the first extending portion 10 is higher when the plunger 3 reciprocates on the through hole 7.

Example three:

the difference from the second embodiment is that in the third embodiment, a second extension 11 is further provided below the first extension 10, and the second extension 11 is thinner than the first extension 10, and the second extension 11 is integrally formed with the first extension 10, so that the structural strength of the through hole 7 matching the first extension 10 and the second extension 11 is higher when the plunger 3 reciprocates on the through hole 7.

Example four:

the difference from the third embodiment is that in the fourth embodiment, the three first extending parts 10 are connected by the reinforcing ribs 12, so that the overall strength is higher.

Example five:

the difference from the first embodiment is that the ratio of the groove depth of the annular groove 8 to the diameter of the plunger 3 in the fifth embodiment is 0.25.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Various alterations and modifications will no doubt become apparent to those skilled in the art after having read the above description. It is therefore intended that the appended claims be interpreted as covering all alterations and modifications as fall within the true spirit and scope of the utility model. Any and all equivalent ranges and contents within the scope of the claims should be considered to be within the intent and scope of the present invention.

Claims

1. The utility model provides a high pressure cleaner plunger pump, includes the pump body (1), plunger frame (2) and plunger (3), be provided with through-hole (7) that supply plunger (3) to pass on plunger frame (2), its characterized in that: an annular groove (8) is formed in the outer peripheral surface of the plunger (3), an annular sealing ring (9) is installed in the annular groove (8), and the annular sealing ring (9) is pressed between the annular groove (8) and the inner wall of the through hole (7).

2. The high pressure washer plunger pump of claim 1, wherein: the through hole (7) extends downwards to form a first extending part (10) for the plunger (3) to pass through.

3. The high pressure washer plunger pump of claim 2, wherein: the first extension part (10) extends downwards to form a second extension part (11) for the plunger (3) to pass through.

4. The high pressure washer plunger pump of claim 3, wherein: the thickness of the second extension (11) is less than the thickness of the first extension (10).

5. The high pressure washer plunger pump of claim 2, wherein: plunger (3) have threely, just through-hole (7) also are three, and three through-hole (7) evenly set up on plunger frame (2) along the circumference.

6. The high pressure washer plunger pump of claim 5, wherein: reinforcing ribs (12) are arranged among the three first extending parts (10).

7. The high pressure washer plunger pump of claim 1, wherein: the ratio of the groove depth of the annular groove (8) to the diameter of the plunger (3) is 0.2-0.25.