CN217888978U - Pressure maintaining device for high-pressure cleaning machine - Google Patents

Abstract

The utility model discloses a pressurizer for high pressure cleaner, which comprises a pump body, be equipped with the cavity in the pump body, be provided with pressure retaining valve and overflow valve in the cavity, the pressure retaining valve is equipped with inner chamber and valve gap, be equipped with the through-hole on the valve gap, interior intracavity is provided with movable sealing member, be equipped with the apopore that is used for intercommunication inner chamber and cavity on the pressure retaining valve, the pressure retaining valve outside is equipped with first sealing washer, the overflow valve orientation the tip of pressure retaining valve is equipped with the valve barrel, be equipped with the perforation on the valve barrel, be equipped with first case and a reset spring in the overflow valve, first case is equipped with sealed end towards the one end of valve barrel, be equipped with the overflow hole on the overflow valve, the tip of the pump body is equipped with switch module, first case with switch module's contact is realized switch module's closing, the pressurizer can adjust the inside pressure.

Description

Pressure maintaining device for high-pressure cleaning machine

[ technical field ] A method for producing a semiconductor device

The utility model relates to a pressurizer for high pressure cleaner belongs to pressurizer technical field.

[ background of the invention ]

The high-pressure cleaning machine is a commonly used garden tool, and the switch needs to be opened when the cleaning machine works, and the high-pressure gun handle is gripped, however, some machines on the market still can operate when the gun is closed, so that the energy is wasted, some machines can be closed and stopped, but still are in a high-pressure state in the machine, light people easily cause the functional failure of the cleaning machine, heavy people can cause the high-pressure gun to burst, and the personal safety of a user is threatened.

[ Utility model ] content

The utility model aims to solve the technical problem that a pressurizer for high pressure cleaner is provided, the pressure of the pump body inside can be adjusted to the pressurizer.

Solve the technical problem, the utility model discloses a following technical scheme:

the utility model provides a pressurizer for high pressure cleaner, includes the pump body, be equipped with the cavity in the pump body, be provided with pressure retaining valve and overflow valve in the cavity, pressure retaining valve slides and sets up in the cavity, pressure retaining valve is equipped with inner chamber and valve gap, be equipped with the through-hole on the valve gap, the intracavity is provided with movable sealing member, be equipped with the apopore that is used for intercommunication inner chamber and cavity on the pressure retaining valve, the pressure retaining valve outside is equipped with first sealing washer, the pressure retaining valve orientation when the overflow valve removes first sealing washer with form sealedly between the cavity inner wall, the overflow valve orientation the tip of pressure retaining valve is equipped with the valve barrel, be equipped with the perforation on the valve barrel, be equipped with first case and a reset spring in the overflow valve, first case is equipped with sealed end towards the one end of valve barrel, sealed end with the valve barrel contact forms sealedly, be equipped with the overflow hole on the overflow valve, the tip of the pump body is equipped with switch module, first case with switch module's contact is realized switch module's closing.

Adopt the beneficial effects of the utility model are that:

the utility model discloses in at the high pressure rifle time of driving, the high pressure water is followed gush out in the middle of pressure retaining valve and the overflow valve, work as when the high pressure rifle is closed, the high pressure water recoil makes the pressure retaining valve slides towards the overflow valve, the pressure retaining valve promotes the first case of overflow valve is backed, this moment first sealing washer with form sealedly between the cavity inner wall, the overflow valve with sealing contact between the valve barrel, the high pressure water of pressure retaining valve tip passes through simultaneously the through-hole of valve gap will the movable sealing member pushes away, the high pressure water gets into in the inner chamber, the high pressure water is followed apopore and perforation enter into in the overflow valve, finally follow the overflow hole flows, overflow hole and water inlet are linked together, thereby it is right to realize the decompression of the high pressure water of pressure retaining valve tip, make the inside water pressure of the pump body be less than the water pressure of its during operation far away, reduce the high pressure water and to the produced pump body, can prolong by a wide margin the life of the pump body, reduce the material requirement to the high pressure rifle, also can avoid simultaneously the high pressure rifle explodes because of high pressure water, reduces the use risk, improves user's safety nature.

Additionally, in the utility model discloses in high pressure water recoil makes the pressure retaining valve slides towards the overflow valve, the pressure retaining valve promotes the first case of overflow valve is backed off, the tip of first case contacts with switch module, realizes closing of switch module, reaches automatic shutdown's function, consumption that can the energy can be saved.

Preferably, the movable sealing element comprises a second valve core, a second return spring and a second sealing ring, the second return spring limits the second valve core to be close to the valve cover, the second sealing ring is installed on the inner wall of the cavity, and when the second valve core is in contact with the valve cover, the second sealing ring and the side wall of the second valve core keep interference fit.

Preferably, a neck reducing section is arranged in the cavity and is located between the pressure retaining valve and the valve sleeve, and when the first sealing ring is located at the neck reducing section, the first sealing ring is in interference fit with the wall surface of the neck reducing section.

Preferably, the sealing end comprises a table top and a convex column, the convex column is arranged on the surface of the table top, a conical inclined plane is arranged at the joint of the table top and the convex column, and an inclined plane is arranged on the surface of the through hole.

Preferably, a water outlet pipe is arranged at the end part, far away from the switch component, of the pump body, the inner end of the water outlet pipe is connected with a venturi, and the water outlet pipe, the venturi, the pressure maintaining valve and the overflow valve are located on the same straight line.

Preferably, the end of the pump body is connected with a switch box, the switch assembly is installed in the switch box, a connection position of the switch box and the pump body is provided with a avoiding hole for the first valve core to enter, and a wire outlet hole is formed in the side face of the switch box.

Preferably, the water outlet hole is located between the first sealing ring and the valve housing.

Preferably, the end part of the pressure retaining valve, which is far away from the valve sleeve, is provided with a spring and a bracket for fixing the spring.

Other features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.

[ description of the drawings ]

The invention will be further explained with reference to the drawings:

fig. 1 is a cross-sectional view of an embodiment of the present invention.

Reference numerals: the water outlet pipe 1, the venturi tube 2, the pressure retaining valve 3, the second valve core 31, the second return spring 32, the water outlet hole 33, the valve cover 34, the 341 through hole, the spring 35, the overflow valve 4, the first valve core 41, the table surface 411, the convex column 412, the conical inclined plane 413, the first return spring 42, the overflow hole 43, the valve sleeve 5, the through hole 51 and the switch component 6.

[ detailed description ] A

The technical solutions of the embodiments of the present invention are explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1, this embodiment has demonstrated a pressurizer for high pressure cleaner, which comprises a pump body, be equipped with the cavity in the pump body, be provided with pressure retaining valve 3 and overflow valve 4 in the cavity, the tip that switch module 6 was kept away from to the pump body is equipped with outlet pipe 1, the inner of outlet pipe 1 is connected with venturi tube 2, outlet pipe 1, venturi tube 2, pressure retaining valve 3 and overflow valve 4 are in on the same straight line, pressure retaining valve 3 is equipped with spring 35 towards venturi tube 2's tip to and be used for fixing spring 35's support, when the high pressure rifle is opened the rifle, the high pressure water can promote pressure retaining valve 3 to venturi tube 2, spring 35 can slow down pressure retaining valve 3's motion is avoided pressure retaining valve 3 with venturi tube 2 bumps, reduces pressure retaining valve 3's impaired possibility improves pressure retaining valve 3's life.

In this embodiment the valve retaining valve 3 slides and sets up in the cavity, valve retaining valve 3 is equipped with inner chamber and valve gap 34, be equipped with through-hole 341 on the valve gap 34, be provided with movable sealing member in the inner chamber, movable sealing member includes second valve core 31, second reset spring 32 and second sealing washer, second reset spring 32 restriction second valve core 31 is close to valve gap 34, the second sealing washer is installed on the inner wall of cavity, second valve core 31 with when valve gap 34 contacts, the second sealing washer with the lateral wall of second valve core 31 keeps interference fit, and isolated with this through-hole 341 and the intercommunication of inner chamber, second valve core 31 is close to valve gap 34's tip diameter is less, works as second valve core 31 keeps away from during valve gap 34, make between the second valve core 31 lateral wall through-hole 341 with the inner chamber communicates each other, valve retaining valve 3 outside surface is equipped with the annular, install first sealing washer in the annular, be equipped with the neck section in the cavity, be equipped with excessive inclined plane between the neck section of reducing valve and the valve gap between 3 wall of valve retaining valve gap, make the sealing washer 3 and the apopore 5 the sealing washer 33 be equipped with the neck section of reducing valve gap, the sealing washer 33 on the neck section of sealing washer, be equipped with the first sealing washer 33 the neck section of the apopore intercommunication of the first sealing washer, the valve gap of sealing washer, the apopore 33 the valve gap between the valve gap of sealing washer, the valve gap of reducing valve gap between the valve gap of the valve gap.

In this embodiment, a valve sleeve 5 is disposed at an end portion of the overflow valve 4 facing the pressure retaining valve 3, a through hole 51 is disposed on the valve sleeve 5, a first valve core 41 and a first return spring 42 are disposed in the overflow valve 4, a sealing end is disposed at an end of the first valve core 41 facing the valve sleeve 5, the sealing end includes a table 411 and a protruding column 412, the protruding column 412 is disposed on a surface of the table 411, a tapered inclined surface 413 is disposed at a joint of the table 411 and the protruding column 412, an inclined surface is disposed on a surface of the through hole 51, when the protruding column 412 extends into the through hole 51, the tapered inclined surface 413 and the inclined surface on the surface of the through hole 51 are tightly attached to each other to form a seal, an overflow hole 43 is disposed on the overflow valve 4, and the overflow hole 43 is communicated with a water inlet for supplying water to the pump body.

In this embodiment the end connection of the pump body has the switch box, be equipped with switch module 6 in the switch box, the switch box with the junction of the pump body is equipped with the confession the hole of dodging that first case 41 got into, the side of switch box is equipped with the wire hole, works as first case 41 orientation switch module 6 removes, first case is pressed the last button of switch module 6.

As shown in fig. 1, work as in this embodiment the high pressure gun is opened the rifle and is worked, and high pressure water is followed gushed in the middle of pressure retaining valve 3 and the overflow valve 4, high pressure water will pressure retaining valve 3 upwards promotes, spring 35 of pressure retaining valve 3 upper end with venturi 2 contacts, and shown spring 35 can avoid pressure retaining valve 3 and venturi 2 collide each other, reduce the impaired possibility of pressure retaining valve 3, this moment high pressure water is followed the outside flow direction of pressure retaining valve 3 outlet pipe 1.

When the high pressure gun closes the rifle, high pressure water recoil makes retaining valve 3 promotes downwards, this moment retaining valve 3 is close to valve barrel 5, works as first sealing washer gets into during the necking down section, first sealing washer with the cavity inner wall is interference fit, has realized the sealed between retaining valve 3 side and the cavity inner wall, simultaneously retaining valve 3 with first case 41 contacts, and makes first case 41 moves down, projection 412 breaks away from perforation 51, first case 41 with the sealed of valve barrel 5 is relieved, and because the water pressure of retaining valve 3 upside is great this moment, high pressure water gets into from the through-hole 341 of valve gap 34 in the retaining valve 3, high pressure water will second valve core 31 pushes down, after the second valve core 31 is away from the valve cover 34 by a certain distance, a gap exists between the side wall of the second valve core 31 and the second sealing ring, high-pressure water can enter the inner cavity, and the high-pressure water flows to the valve sleeve 5 and the overflow valve 4 through the water outlet 33 of the pressure retaining valve 3 and finally flows out of the overflow hole 43 of the overflow valve 4, so that the pressure relief of the upper side area of the pressure retaining valve 3 is realized, the water pressure in the pump body is far less than the water pressure during the work, the burden of the high-pressure water on the pump body is reduced, the service life of the pump body can be greatly prolonged, the material requirement on the high-pressure gun is reduced, meanwhile, the high-pressure gun can be prevented from being burst due to the high-pressure water, the use risk is reduced, and the use safety of a user is improved.

Work as during the certain degree of the water pressure decline of 3 upsides of pressure retaining valve, water pressure can't support second reset spring 32 kick-backs afterwards, second valve core 31 is in be close to under second reset spring 32's the effect valve barrel 5 works as second valve core 31's lateral wall with during the interference fit is kept to the second sealing washer, 3 upsides of pressure retaining valve water can't get into the inner chamber, and the realization is right the pressurize of 3 upsides of pressure retaining valve.

In addition, in this embodiment, when the gun is shut down, after the pressure retaining valve 3 is pressed downward by the high-pressure water, the pressure retaining valve 3 contacts with the first valve core 41 in the overflow valve 4, and at the same time, the first valve core 41 is pushed downward, so that the first valve core 41 moves downward, when the protruding column 412 is separated from the through hole 51, the sealing between the first valve core 41 and the valve sleeve 5 is released, so that the water can enter the overflow valve 4, and the first valve core 41 moves downward and contacts with the switch component 6, so that the switch component 6 is closed, thereby implementing the shutdown of this embodiment, and achieving the function of automatic shutdown of this embodiment after the gun is shut down, which can greatly save energy consumption.

When the gun is opened again, the high-pressure water pushes the pressure maintaining valve 3 upwards, the first valve core 41 moves upwards under the action of the first return spring 42, after the boss 412 enters the through hole 51, the first valve core 41 and the valve sleeve 5 maintain sealing again, and meanwhile, the first valve core 41 releases the pressing on the switch assembly 6, so that the switch assembly 6 can be automatically opened, and the maximum pressure and the pressure maintaining pressure can be adjusted by adjusting the spring force of the first return spring and the second return spring.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims (8)

1. The utility model provides a pressurizer for high pressure cleaner which characterized in that: the improved pressure retaining valve comprises a pump body, be equipped with the cavity in the pump body, be provided with pressure retaining valve and overflow valve in the cavity, the pressure retaining valve slides and sets up in the cavity, the pressure retaining valve is equipped with inner chamber and valve gap, be equipped with the through-hole on the valve gap, the inner intracavity is provided with movable sealing member, be equipped with the apopore that is used for communicateing inner chamber and cavity on the pressure retaining valve, the pressure retaining valve outside is equipped with first sealing washer, the pressure retaining valve orientation when the overflow valve removes first sealing washer with form sealedly between the cavity inner wall, the overflow valve orientation the tip of pressure retaining valve is equipped with the valve barrel, be equipped with the perforation on the valve barrel, be equipped with first case and first reset spring in the overflow valve, first case is equipped with the sealed end towards the one end of valve barrel, sealed end with the valve barrel contact forms sealedly, be equipped with the overflow hole on the overflow valve, the tip of the pump body is equipped with switch module's contact realization switch module's closing.

2. A pressurizer for a high pressure cleaner in accordance with claim 1 wherein: the movable sealing element comprises a second valve core, a second return spring and a second sealing ring, the second return spring limits the second valve core to be close to the valve cover, the second sealing ring is installed on the inner wall of the cavity, and when the second valve core is in contact with the valve cover, the second sealing ring is in interference fit with the side wall of the second valve core.

3. A pressurizer for a high pressure cleaner in accordance with claim 1 wherein: the valve is characterized in that a neck section is arranged in the cavity, the neck section is located between the pressure retaining valve and the valve sleeve, and when the first sealing ring is located at the neck section, the first sealing ring is in interference fit with the wall surface of the neck section.

4. A pressurizer for a high pressure cleaner in accordance with claim 1 wherein: the sealing end comprises a table top and a convex column, the convex column is located on the surface of the table top, a conical inclined plane is arranged at the joint of the table top and the convex column, and an inclined plane is arranged on the surface of the through hole.

5. A pressurizer for a high pressure cleaner in accordance with claim 1 wherein: the end part of the pump body, which is far away from the switch component, is provided with a water outlet pipe, the inner end of the water outlet pipe is connected with a venturi tube, and the water outlet pipe, the venturi tube, the pressure retaining valve and the overflow valve are positioned on the same straight line.

6. A pressurizer for a high pressure cleaning machine according to claim 1, wherein: the end connection of the pump body has the switch box, the switch unit mount is in the switch box, the switch box with the junction of the pump body is equipped with the confession the hole of dodging that first case got into, the side of switch box is equipped with the wire hole.

7. A pressurizer for a high pressure cleaner in accordance with claim 1 wherein: the water outlet hole is located between the first sealing ring and the valve sleeve.

8. A pressurizer for a high pressure cleaner in accordance with claim 1 wherein: the end part of the pressure retaining valve, which is far away from the valve sleeve, is provided with a spring and a bracket for fixing the spring.

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