CN213574585U

CN213574585U - Low-torque starting device

Info

Publication number: CN213574585U
Application number: CN202022654012.XU
Authority: CN
Inventors: 陈云朝
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-06-29
Anticipated expiration: 2030-11-16

Abstract

The application relates to the field of high-pressure pumps, in particular to a low-torque starting device which can start a cleaning machine at low current, effectively protects a circuit and saves electric energy, has simple structure and convenient maintenance and comprises a pump body, a water outlet check valve, an unloading valve rod, a two-way check valve core, a base and a reset spring, wherein a fifth flow passage, a sixth flow passage, an eighth flow passage, a water return hole and a water outlet are arranged in the pump body, the fifth flow passage and the sixth flow passage are respectively communicated with the eighth flow passage and the water return hole, the water outlet check valve is positioned between the eighth flow passage and the water outlet, the unloading valve rod is positioned between the water return hole and the eighth flow passage, the two-way check valve core and the reset spring are both positioned in a cavity in the pump body, an O-shaped rubber ring is arranged between the two-way check valve core and the cavity, the cavity is communicated with the fifth flow passage and the, the base is located the reset spring below.

Description

Low-torque starting device

Technical Field

The application relates to the field of high-pressure pumps, in particular to a low-torque starting device.

Background

The pressure regulating valve system of the existing cleaning high-pressure pump comprises a pump body, an unloading valve rod and a water outlet check valve, as shown in fig. 2, the water delivery condition of the pump body is controlled only by the unloading valve rod and the water outlet check valve, but the water cannot be discharged and released due to the fact that a bypass valve is not used for controlling, so that the pressure of the cleaning machine is increased when the cleaning machine is started, a single-phase motor is overloaded to start, and if the voltage is insufficient, the phenomenon that the cleaning machine cannot be started due to rotation blockage occurs, and the use effect is influenced.

SUMMERY OF THE UTILITY MODEL

Based on this, this application provides one kind and can make the cleaning machine low current start, effective protection circuit and practice thrift the electric energy, has and constructs simply, the low moment starting drive of convenient maintenance effect for.

The application provides a low moment starting drive, including the pump body, play water check valve, off-load valve rod, two-way check case, base and reset spring, inside fifth runner, sixth runner, eighth runner, return water hole and the delivery port of being equipped with of the pump body, and fifth runner and sixth runner communicate with each other with eighth runner and return water hole respectively, the play water check valve is located between eighth runner and the delivery port, and the off-load valve rod is located between return water hole and the eighth runner, two-way check case and reset spring all are located the inside cavity of the pump body, and are equipped with O type rubber circle between two-way check case and the cavity, the cavity communicates with each other with fifth runner and return water hole, and two-way check case bottom is inserted inside the reset spring top, the base is located the reset spring below.

Preferably, the water outlet check valve comprises a compression spring, a plunger and a sealing ring, one end of the plunger is inserted into and fixed on the inner side of the compression spring, the sealing ring is fixed on the other end of the plunger, and the plunger blocks the water outlet through the sealing ring.

Preferably, the top and the bottom of the unloading valve rod are respectively provided with a connecting spring and a plug, and when the unloading valve rod moves downwards, the plug blocks a channel between the water return hole and the eighth flow channel.

Preferably, the O-shaped rubber rings are respectively arranged on the outer side of the upper part and the outer side of the lower part of the two-way check valve core, when the top of the two-way check valve core is contacted with the cavity, the outlet of the fifth flow passage is blocked, and when the bottom of the two-way check valve core is contacted with the cavity, the inlet of the sixth flow passage is blocked.

Preferably, the base is fixed in the pump body bottom, and the base top is equipped with the hole, reset spring bottom is located inside the hole.

Compared with the prior art, the utility model has the following characteristics and beneficial effect:

1. when the water body is output to the water outlet through the eighth flow passage and the water outlet check valve, the water body can be input into the fifth flow passage for pressure relief, the input water body can push the two-way check valve core to move downwards, at the moment, a small amount of water can return to the water return hole from the flow passage through a gap between the two-way check valve core and the pump body, and then, the water can be returned through the water return hole, so that the single-phase motor can not be overloaded and started due to pressure rise when the cleaning machine is started;

2. the water is drained and pressure is relieved through the bidirectional check valve, so that a motor of the cleaning machine can be started at low current, a circuit is effectively protected, and electric energy is saved;

3. the bidirectional check valve is simple in structure and more convenient to maintain.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in related arts, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of the prior art.

Reference numerals: 1. a pump body; 2. an unloading valve rod; 3. a two-way check valve core; 4. a return spring; 5. a fifth flow channel; 6. a sixth flow path; 7. a water return hole; 8. an eighth flow channel; 9. a base; 10. a water outlet check valve; 11. a water outlet; 12. an O-shaped rubber ring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other examples, which can be obtained by a person skilled in the art without making any inventive step based on the examples in this application, are within the scope of protection of this application.

It should be understood by those skilled in the art that technical or scientific terms used in the claims and the specification should have the ordinary meaning as understood by those having ordinary skill in the art to which this application belongs. "connected" or "coupled" and like terms are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect; the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like refer to an orientation or positional relationship as shown in the drawings, which are used for convenience in describing the invention and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore, the above-described terms are not to be construed as limiting the invention.

Referring to fig. 1, in the embodiment of the present application, a low torque starting device is provided, which includes a pump body 1, a water outlet check valve 10, an unloading valve rod 2, a two-way check valve core 3, a base 9 and a return spring 4, wherein a fifth flow passage 5, a sixth flow passage 6, an eighth flow passage 8, a return water hole 7 and a water outlet 11 are provided inside the pump body 1, the fifth flow passage 5 and the sixth flow passage 6 are respectively communicated with the eighth flow passage 8 and the return water hole 7, the water outlet check valve 10 is located between the eighth flow passage 8 and the water outlet 11, the unloading valve rod 2 is located between the return water hole 7 and the eighth flow passage 8, the two-way check valve core 3 and the return spring 4 are both located inside a cavity inside the pump body 1, an O-shaped rubber ring 12 is provided between the two-way check valve core 3 and the cavity, the cavity is communicated with the fifth flow passage 5 and the return water hole 7, the bottom of the two-way, the water outlet 11 and the water return hole 7 are closed by the bidirectional check valve core 3 in the upper position, the base 9 is positioned below the reset spring 4, when the water body is output to the water outlet through the eighth flow passage and the water outlet check valve, the water body can be input into the fifth flow passage for pressure relief, the input water body can push the bidirectional check valve core to move downwards, a small amount of water can return to the water return hole from the flow passage through a gap between the bidirectional check valve core and the pump body at the moment, and the water can be subsequently returned through the water return hole, so that the cleaning machine cannot be started up once and the single-phase motor is started in an overload mode due to pressure rise.

Preferably, the water outlet check valve 10 comprises a compression spring, a plunger and a sealing ring, one end of the plunger is inserted into and fixed on the inner side of the compression spring, the sealing ring is fixed on the other end of the plunger, the plunger blocks the water outlet 11 through the sealing ring, and the plunger is controlled to move left and right, so that the water flowing between the water outlet 11 and the eighth flow passage 8 is controlled.

Preferably, the top and the bottom of the unloading valve rod 2 are respectively provided with a connecting spring and a plug, when the unloading valve rod 2 moves downwards, the plug blocks a channel between the water return hole 7 and the eighth flow channel 8, so that a water body flowing through the water return hole 7 and the eighth flow channel 8 is controlled.

Preferably, the O-shaped rubber rings 12 are respectively arranged on the outer sides of the upper part and the lower part of the two-way check valve core 3, when the top of the two-way check valve core 3 is contacted with the cavity, the outlet of the fifth flow channel 5 is blocked, when the bottom of the two-way check valve core 3 is contacted with the cavity, the inlet of the sixth flow channel 6 is blocked, and the water body flowing through the sixth flow channel 6 and the water return hole 7 is controlled.

Preferably, the base 9 is fixed in the pump body 1 bottom, and the base 9 top is equipped with the hole, and reset spring 4 bottom is located inside the hole, improves the steadiness of reset spring 4 in base 9 department.

To sum up, the low-torque starting device provided by the embodiment of the present application belongs to a part of a high-pressure pump, and the high-pressure pump is further provided with a crankshaft and connecting rod structure, a valve, a motor, and other structures, and when in use, the motor on the high-pressure pump is controlled to rotate so as to drive the crankshaft and the connecting rod, so that the connecting rod drives a plunger to reciprocate, when the plunger on the water outlet check valve 10 retreats, water is input from the eighth flow passage 8 to the water outlet 11, the position of the water outlet 11 is connected with a steel wire pipe and a spray gun, water is directly output through the steel wire pipe and the spray gun, and at the same time, part of the water is input from the eighth flow passage 8 to the fifth flow passage 5 for pressure relief, the input water pushes the two-way check valve core 3 to move down and returns to the water return hole 7 through the sixth flow passage 6, when water injection is required, and the unloading valve rod 2 is opened, at the moment, the unloading valve rod 2 moves upwards, water which cannot be output through the water outlet 11 is conveyed back to the water return hole 7 from the eighth flow channel 8, and the water return hole 7 is communicated with an external water inlet pipe, so that the water finally flows back to the water inlet pipe in the water return hole 7, when the high-pressure pump stops working, the two-way check valve core 3 is pushed to the upper position by the return spring 4, and the O-shaped rubber ring 12 is contacted with the pump body 1 for sealing.

The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A low-torque starting device is characterized by comprising a pump body (1), a water outlet check valve (10), an unloading valve rod (2), a two-way check valve core (3), a base (9) and a return spring (4), wherein a fifth flow channel (5), a sixth flow channel (6), an eighth flow channel (8), a water return hole (7) and a water outlet (11) are arranged in the pump body (1), the fifth flow channel (5) and the sixth flow channel (6) are respectively communicated with the eighth flow channel (8) and the water return hole (7), the water outlet check valve (10) is positioned between the eighth flow channel (8) and the water outlet (11), the unloading valve rod (2) is positioned between the water return hole (7) and the eighth flow channel (8), the two-way check valve core (3) and the return spring (4) are both positioned in a cavity in the pump body (1), and an O-shaped rubber ring (12) is arranged between the two-way check valve core (3) and the cavity, the cavity is communicated with the fifth flow channel (5) and the water return hole (7), the bottom of the bidirectional check valve core (3) is inserted into the top end of the reset spring (4), and the base (9) is located below the reset spring (4).

2. A low-torque starting device according to claim 1, characterised in that said outlet check valve (10) comprises a compression spring, a plunger inserted and fixed at one end inside the compression spring, and a sealing ring fixed at the other end of the plunger, and said plunger blocks the outlet (11) by means of the sealing ring.

3. A low-torque starting device according to claim 1, wherein the unloading valve rod (2) is provided with a connecting spring and a plug at the top and bottom respectively, and when the unloading valve rod (2) moves downwards, the plug blocks the passage between the water return hole (7) and the eighth flow passage (8).

4. A low-torque starting device according to claim 1, wherein the O-ring (12) is arranged on the upper outer side and the lower outer side of the two-way check valve core (3), and blocks the outlet of the fifth flow passage (5) when the top of the two-way check valve core (3) is in contact with the chamber, and blocks the inlet of the sixth flow passage (6) when the bottom of the two-way check valve core (3) is in contact with the chamber.

5. A low-torque starting device according to claim 1, wherein the base (9) is fixed at the bottom of the pump body (1), the top of the base (9) is provided with an inner hole, and the bottom of the return spring (4) is positioned in the inner hole.