CN210178566U

CN210178566U - Plunger pump

Info

Publication number: CN210178566U
Application number: CN201921063020.8U
Authority: CN
Inventors: Wei Zhu; 朱尉
Original assignee: NINGBO HUAXUN CLEANING MACHINERY CO Ltd
Current assignee: NINGBO HUAXUN CLEANING MACHINERY CO Ltd
Priority date: 2019-07-09
Filing date: 2019-07-09
Publication date: 2020-03-24
Anticipated expiration: 2029-07-09

Abstract

The utility model relates to a pump technical field especially relates to a plunger pump. Including the pump body (5) and plunger frame (6), be equipped with reciprocating motion's plunger (7) between plunger frame (6) and the pump body (5), it still includes pump cover (8), be equipped with into water check valve (9) and play water check valve (10) on the up end of the pump body (5) respectively, just pump cover (8) assemble at the pump body (5) up end and press fitting location respectively and advance water check valve (9) and play water check valve (10). The plunger pump is convenient to install and low in cost.

Description

Plunger pump

Technical Field

The utility model relates to a pump technical field especially relates to a plunger pump.

Background

The plunger pump is an important device of the hydraulic system. 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 is only provided with a pump body 1, a plurality of water inlet check valves 2 and water outlet check valves 3 are arranged on the pump body 1, and each check valve needs to be provided with a screw plug 4 for press mounting and positioning, so that the installation is inconvenient and the cost is high.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: the plunger pump is convenient to install and low in cost.

The utility model adopts the technical proposal that: the plunger pump comprises a pump body, a plunger frame, a plunger and a pump cover, wherein the plunger is arranged between the plunger frame and the pump body and can reciprocate, a water inlet check valve and a water outlet check valve are arranged on the upper end face of the pump body respectively, and the pump cover is assembled on the upper end face of the pump body and is respectively press-fitted and positioned with the water inlet check valve and the water outlet check valve.

Preferably, the water inlet check valves are arranged on the periphery of the upper end face of the pump body, the water outlet check valves are arranged in the middle of the upper end face of the pump body, the water inlet check valves correspond to the water outlet check valves one by one, and the distance between the corresponding water inlet check valves and the corresponding water outlet check valves is smaller than the radius of the water outlet check valves.

Preferably, the number of the water inlet check valves and the number of the water outlet check valves are 3, the water inlet check valves are distributed around the upper end face of the pump body in a triangular mode, and the water outlet check valves are distributed in the middle of the pump body in a triangular mode.

Preferably, an accommodating cavity is further formed above the three water outlet one-way valves, and a main valve assembly for preventing high-pressure water from flowing back is arranged in the accommodating cavity.

Compared with the prior art in the structure more than adopting, the utility model has the advantages of it is following: divide into pump body and pump cover with original pump body to all set up the check valve on the pump body, then realize the pressure equipment location through the pump cover, so not only simple to operate need not use the plug screw in addition, and the cost is lower.

The water inlet check valve and the water outlet check valve are arranged on the upper end face, and the distance between the corresponding water inlet check valve and the corresponding water outlet check valve is short, so that a middle water channel between water inlet and water outlet is short, and the working efficiency of compression and shrinkage during the operation of the plunger is high.

Set up a main valve unit spare, can prevent high pressure water backward flow better on the basis of three water check valves like this, and then make the product reliability higher.

Drawings

Fig. 1 is a cross-sectional view of a prior art plunger pump.

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

Fig. 3 is the top view of the plunger pump after the pump cover is removed.

Fig. 4 is the top view of the plunger pump with the pump cover and the main valve assembly removed.

As shown in the figure: 1. pump bodies on prior art plunger pumps; 2. a water outlet one-way valve on the prior art plunger pump; 3. a water inlet check valve on the prior art plunger pump; 4. screw plugs on prior art plunger pumps; 5. the application relates to a pump body of a plunger pump; 6. the application relates to a plunger rack of a plunger pump; 7. the plunger of the plunger pump of the application; 8. the application relates to a pump cover of a plunger pump; 9. the application relates to a water inlet one-way valve of a plunger pump; 10. the application relates to a water outlet one-way valve of a plunger pump; 11. the application relates to a master valve assembly of a plunger pump.

Detailed Description

The present invention will be further described below with reference to specific embodiments, but the present invention is not limited to the following specific embodiments.

Plunger pump, from the bottom up includes hydro-cylinder, plunger frame 6, pump body 5 and pump cover 8 in proper order, wherein:

a water inlet pump head and a water outlet pump head are arranged on the pump cover 8, and water is supplied in and out;

the middle part of the upper end surface of the pump body 5 is provided with three water outlet one-way valves 10, the periphery is provided with three water inlet one-way valves 9, the upper parts of the three water outlet one-way valves 10 in the middle part are also provided with an accommodating cavity, a main valve assembly 11 is arranged in the accommodating cavity, the function and the structure of the main valve assembly 11 are similar to those of the one-way valves, and the functions and the structures of the main valve assembly 11 are all for preventing high-pressure water from flowing back, namely realizing double insurance, after the pump cover 8 is arranged on the pump body 5, the three water inlet one-way valves 9 and the main valve assembly 11 can be pressed and positioned, the main valve assembly 11 can be used for pressing and positioning the three water outlet one-way valves 10, the water inlet one-way valves 9 are communicated with a water inlet pump head, and;

a plunger cavity is formed among the pump body 5, the plunger frame 6 and the oil cylinder, and the plunger 7 is arranged in the plunger cavity to reciprocate.

And because the check valve 9 of intaking and the check valve 10 of going out water all set up along the plunger pump axis, and the plunger 7 also sets up along the plunger pump axis simultaneously, so the distance that can set up between plunger and the check valve is nearer, and the pump body 5 upper end design of plunger pump is less, so three check valve 9 of intaking all set up with three check valve 10 of going out water more tightly, make the water course distance between water inflow check valve and the plunger chamber shorter like this, the high pressure water can not be because the water course is longer and more energy is lost.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a plunger pump, includes the pump body (5) and plunger frame (6), be equipped with reciprocating motion's plunger (7) between plunger frame (6) and the pump body (5), its characterized in that: the water pump further comprises a pump cover (8), a water inlet check valve (9) and a water outlet check valve (10) are arranged on the upper end face of the pump body (5) respectively, and the pump cover (8) is assembled on the upper end face of the pump body (5) and is respectively press-fitted and positioned with the water inlet check valve (9) and the water outlet check valve (10).

2. The plunger pump of claim 1, wherein: the water inlet check valve (9) is arranged on the periphery of the upper end face of the pump body (5), the water outlet check valve (10) is arranged in the middle of the upper end face of the pump body (5), the water inlet check valve (9) corresponds to the water outlet check valve (10) one by one, and the distance between the corresponding water inlet check valve (9) and the corresponding water outlet check valve (10) is smaller than the radius of the water outlet check valve (10).

3. The plunger pump of claim 2, wherein: the water inlet check valves (9) and the water outlet check valves (10) are 3, the water inlet check valves (9) are distributed on the periphery of the upper end face of the pump body in a triangular mode, and the water outlet check valves (10) are distributed in the middle of the pump body in a triangular mode.

4. The plunger pump of claim 3, wherein: an accommodating cavity is further arranged above the three water outlet one-way valves (10), and a main valve assembly (11) for preventing high-pressure water from flowing back is arranged in the accommodating cavity.