CN212690970U

CN212690970U - Open exhaust structure who stops switch

Info

Publication number: CN212690970U
Application number: CN202020595547.1U
Authority: CN
Inventors: 黄新
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-20
Filing date: 2020-04-20
Publication date: 2021-03-12
Anticipated expiration: 2030-04-20

Abstract

The utility model provides a open exhaust structure who stops switch belongs to high pressure cleaner technical field. It has solved the current slow problem of valve rod removal speed in the valve body. This open exhaust structure who stops switch, including having the valve body of well cavity, set up the guiding hole of well cavity in the intercommunication on the inlet opening of well cavity, the other terminal surface of seting up on the terminal surface of valve body, be provided with the valve rod assembly that can follow the axial displacement of valve body in the well cavity and make valve rod assembly have all the time towards keeping away from the spring of guiding hole direction removal trend, in valve rod assembly's one end is worn to establish in the guiding hole, and valve rod assembly forms dynamic seal including the sealed post that slides the setting in the cavity, the outer peripheral face of sealed post and the pore wall of well cavity, and this exhaust structure includes and sets up the exhaust hole of well cavity in the intercommunication on the lateral wall of valve body, and the exhaust hole is. The structure obviously improves the moving speed of the valve rod in the valve body after the valve rod is extruded by high-pressure water.

Description

Open exhaust structure who stops switch

Technical Field

The utility model belongs to the technical field of high pressure cleaner, a open and stop switch, especially an open and stop exhaust structure of switch is related to.

Background

The high-pressure cleaning machine is a machine which enables a high-pressure plunger pump to generate high-pressure water through a power device to wash the surface of an object, and can peel off and wash away dirt so as to achieve the purpose of cleaning the surface of the object. The traditional high-pressure cleaning machine mainly comprises a spray gun and a plunger type water pump, wherein the on-off control of the spray gun and the on-off control of a water pump power supply are mutually independent, the opening and closing of the spray gun are controlled by a trigger, and the starting and closing of the water pump power supply are controlled by a microswitch arranged in the water pump; when the trigger of the spray gun is pulled again, the spray gun sprays water outwards, so that the water pressure in the spray gun is reduced, the ejector rod moves back to reset, the microswitch is loosened, and the water pump is restarted.

At present, chinese patent network discloses a high pressure cleaner gun stop device [ application publication No.: CN105435986A, the plunger pump body is connected with a water outlet tee joint, be equipped with the stroke hole on the water outlet tee joint and with the first through-hole that the stroke hole communicates, the connecting seat is connected with the stroke hole, be equipped with the movable hole that link up with the stroke hole on the connecting seat, connecting seat one end is connected with the micro-gap switch box, be provided with micro-gap switch in the micro-gap switch box, be equipped with the ejector pin in the stroke hole, ejector pin one end passes the movable hole and exposes outside the connecting seat, be equipped with the switching spring that enables the ejector pin to carry out reciprocating motion in the stroke hole, the ejector pin includes the pole base and the pole body that is connected with the pole base, the diameter of.

Foretell first through-hole and stroke hole direct intercommunication, the water under high pressure enters into in the stroke hole through first through-hole and acts on the rod seat, the rod seat moves towards the activity hole side along the axial of stroke hole, because the sealing washer wraps up the tip of connecting seat, make the inside cavity that forms after connecting seat and the assembly of play water three way connection be in airtight state, and the rod seat separates into preceding cavity and back cavity with this cavity again, the rod seat is along the axial of stroke hole towards the in-process that the activity hole moved to the side, the volume of back cavity reduces, because be in airtight state in the back cavity, the air in the back cavity is compressed and is made the atmospheric pressure in the back cavity increase gradually, and then hinder the rod seat to move backward, make ejector pin backward moving speed slow, make the ejector pin can't in time touch micro-gap switch, be unfavorable for high pressure cleaner's timely shut down.

Disclosure of Invention

The utility model aims at having above-mentioned problem to current technique, provided one kind and opened the exhaust structure who stops the switch, the utility model discloses the technical problem that will solve is: how to increase the moving speed of the valve rod in the valve body after the valve rod is extruded by high-pressure water.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides an open exhaust structure who stops switch, is including having the valve body of well cavity, set up the guiding hole of well cavity in the intercommunication on the inlet opening of well cavity, another terminal surface of seting up on the terminal surface of valve body, be provided with the valve rod assembly that can follow the axial displacement of valve body in the well cavity and make valve rod assembly have all the time towards keeping away from the spring of guiding hole direction removal trend, establish in the guiding hole is worn to establish by valve rod assembly's one end, valve rod assembly is including sliding the sealed post that sets up in the cavity, the outer peripheral face of sealed post forms dynamic seal with the pore wall of well cavity, its characterized in that, and this exhaust structure includes and sets up the exhaust hole of well cavity in the intercommunication on the lateral wall of valve body, the exhaust hole is for between sealed.

Open and stop the switch and install and use on high pressure cleaner, when high pressure cleaner uses under the superhigh pressure operating mode, for example high pressure cleaner's output water pressure reaches 300 ~ 500 kilograms, the back is closed to high pressure cleaner's spray gun, the water pressure of the inside water under high pressure reaches 300 ~ 500 kilograms of high pressure cleaner, the water under high pressure enters into the valve body through the inlet opening and acts on sealed post, promote sealed post and whole valve rod assembly and move towards the guiding hole side, make valve rod assembly stretch out the valve body from the guiding hole and lean on high pressure cleaner's water pump switch, make high pressure cleaner's water pump shut down. When the sealing column moves towards the guide hole side in the hollow cavity, the outer peripheral surface of the sealing column and the hole wall of the hollow cavity form dynamic sealing, the sealing column divides the hollow cavity into a front cavity and a rear cavity, wherein the front cavity is communicated with the water inlet hole, the rear cavity is communicated with the guide hole, because the exhaust hole is closer to the guide hole relative to the sealing column, the exhaust hole is communicated with the rear cavity, when the sealing column extrudes gas in the rear cavity, the gas in the rear cavity is exhausted out of the valve body through the exhaust hole, so that the air pressure in the rear cavity is kept stable, the phenomenon that the air pressure in the rear cavity is increased to block the sealing column to move towards the guide hole side is avoided, the sealing column can be rapidly moved towards the guide hole side is ensured, the valve rod assembly is timely pushed against a water pump switch of a high-pressure cleaning machine, and the high-pressure.

In the exhaust structure of the start-stop switch, the exhaust hole is obliquely arranged, and the inner port of the exhaust hole faces the water inlet hole side. Through the setting of this structure, move and carry out the extruded in-process to the gas in the back cavity towards the guiding hole side when sealed post, the gas in the back cavity can be quick discharges outside the valve body through the exhaust hole.

In foretell open and stop switch's exhaust structure, well cavity includes the seal chamber that is linked together with the inlet opening, the sealed post slides and sets up in the seal chamber, the exhaust hole is located between seal chamber and the guiding hole. Through the setting of this structure, sealed post is at the axial reciprocating motion in sealed intracavity along sealed chamber, and the outer peripheral face of sealed post forms dynamic seal with the pore wall in sealed chamber, because the exhaust hole is located between sealed chamber and the guiding hole, when sealed post moves towards the guiding hole side, is discharged outside the valve body through the exhaust hole by sealed post extruded gas.

In foretell open and stop exhaust structure of switch, well cavity still includes the stroke chamber adjacent with sealed chamber, the stroke chamber is located between sealed chamber and the guiding hole, the exhaust hole is located between stroke chamber and the guiding hole, valve rod assembly still includes ejector pin and brace table, the one end of ejector pin is worn to establish in the guiding hole, the other end is connected with the brace table, the brace table is located between ejector pin and the sealed post and leans on with sealed post counterbalance, the slip setting of brace table is in the stroke intracavity. Through the arrangement of the structure, when water enters, high-pressure water pushes the sealing column to move towards the side of the guide hole, the sealing column pushes the supporting table and the ejector rod to move towards the side of the guide hole, and at the moment, the spring is compressed; after water pressure reduces, the brace table moves towards the inlet opening side under the effect of spring and resets, the brace table drives the ejector pin and resets along the axial displacement of valve body, the brace table promotes sealed post and resets along the axial displacement of valve body, because brace table and sealed post are the components of a whole that can function independently, the brace table is face contact with sealed post, the atress is even under the lift of brace table for sealed post, consequently sealed post can not take place skew or slope at the axial displacement's of following sealed chamber in-process, the condition of serious wearing and tearing has taken place for the inner wall of sealed post and sealed chamber has been avoided, the life of sealed post has been improved, the stroke chamber plays spacing and guide's effect to the axial reciprocating motion's of brace table along the valve body in-process, avoid the ejector pin to outwards stretch out the length overlength and cause the damage to the water. In addition, when the support table moves towards the guide hole side, the gas in the stroke cavity is exhausted out of the valve body through the exhaust hole.

In the exhaust structure of the start-stop switch, the hollow cavity further comprises a spring cavity adjacent to the stroke cavity, the spring cavity is located between the stroke cavity and the guide hole, the exhaust hole is communicated with the spring cavity, and the inner port of the exhaust hole is close to the stroke cavity. Through the setting of this structure, the spring chamber provides the assembly space of spring, and the structure that the inner port in exhaust hole is close to the stroke chamber makes things convenient for the gas in the stroke chamber to discharge fast.

In the exhaust structure of the start-stop switch, the valve body comprises an upper valve body and a lower valve body, the upper valve body is in threaded connection with the lower valve body, and the guide hole and the exhaust hole are formed in the upper valve body. Through the arrangement of the structure, the upper valve body and the lower valve body are in threaded connection to form the valve body, so that the valve body is convenient to assemble.

Compared with the prior art, the utility model discloses an open exhaust structure who stops switch has following advantage: this structure is when the in-process that sealed post removed towards the guiding hole side in cavity intracavity, the outer peripheral face of sealed post forms dynamic seal with the pore wall of well cavity, sealed post cuts apart into preceding cavity and back cavity with well cavity, wherein preceding cavity is linked together with the inlet opening, back cavity and guiding hole intercommunication, because the exhaust hole is closer to the guiding hole for sealed post, the exhaust hole is linked together with the back cavity, gas in the sealed post is to the back cavity extrudees, gas in the back cavity discharges outside the valve body through the exhaust hole, make the atmospheric pressure in the back cavity remain stable, avoid the atmospheric pressure in the back cavity to rise to obstruct sealed post and remove towards the guiding hole side, guarantee that sealed post can remove towards the guiding hole side fast, the timely top of valve rod component is on high pressure cleaner's water pump switch, make high pressure cleaner can in time shut down.

Drawings

Fig. 1 is a schematic sectional structure of the present invention.

Fig. 2 is a schematic perspective view of the present invention.

In the figure, 1, a valve body; 1a, an upper valve body; 1b, a lower valve body; 11. a hollow cavity; 110. sealing the cavity; 111. a stroke chamber; 112. a spring cavity; 12. a water inlet hole; 13. a guide hole; 14. an exhaust hole; 2. a valve stem assembly; 21. sealing the column; 22. a top rod; 23. a support table; 3. a spring.

Detailed Description

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

This open exhaust structure who stops switch, including having valve body 1 of well cavity 11, set up the inlet opening 12 of well cavity 11 in the intercommunication on the terminal surface of valve body 1, set up the guiding hole 13 of well cavity 11 in the intercommunication on another terminal surface, well cavity 11 is including the sealed chamber 110, stroke chamber 111 and the spring chamber 112 that set up in proper order the interval, and sealed chamber 110 is linked together with inlet opening 12, and spring chamber 112 is linked together with guiding hole 13. Be provided with in the well cavity 11 and can follow valve body 1's axial displacement's valve rod assembly 2, valve rod assembly 2 includes sealed post 21, ejector pin 22 and a supporting bench 23, sealed post 21 slides and sets up in sealed chamber 110, a supporting bench 23 is located between sealed post 21 and the ejector pin 22, and a supporting bench 23 slides and sets up in stroke chamber 111, ejector pin 22's one end is connected with a supporting bench 23, the other end is worn to establish in guiding

hole

13, 3 covers of spring establish on

ejector pin

22, 3 one end of spring is supported with a supporting bench 23 and is leaned on, the other end is supported and leaned on with valve body 1. The exhaust structure comprises an exhaust hole 14 which is formed in the outer side wall of the valve body 1 and communicated with a spring cavity 112, the inner port of the exhaust hole 14 faces the water inlet hole 12 side, and the inner port of the exhaust hole 14 is close to a stroke cavity 111.

The start-stop switch is arranged on the high-pressure cleaning machine for use, when the high-pressure cleaning machine is used under an ultrahigh-pressure working condition, for example, when the output water pressure of the high-pressure cleaning machine reaches 300-500 kg, after a spray gun of the high-pressure cleaning machine is closed, the water pressure of high-pressure water in the high-pressure cleaning machine reaches 300-500 kg, the high-pressure water enters the valve body 1 through the water inlet hole 12 and acts on the sealing column 21, the high-pressure water pushes the sealing column 21 to move towards the guide hole 13, the sealing column 21 pushes the support platform 23 and the ejector rod 22 to move towards the guide hole 13, the spring 3 is compressed, one end of the ejector rod 22 extends out of the valve body 1 from the guide hole 13 and abuts against a water pump switch of the high-pressure cleaning machine, so that a water pump of the high-pressure cleaning machine is stopped, in the process that the support platform 23 moves towards the guide hole, the air pressure in the valve body 1 is kept stable, the sealing column 21 can rapidly move towards the guide hole 13, and the ejector rod 22 is timely abutted against a water pump switch of the high-pressure cleaning machine, so that the high-pressure cleaning machine can be timely shut down.

The valve body 1 comprises an upper valve body 1a and a lower valve body 1b, the upper valve body 1a is in threaded connection with the lower valve body 1b, and a guide hole 13 and an exhaust hole 14 are formed in the upper valve body 1 a. Go up valve body 1a and lower valve body 1b threaded connection and form valve body 1, make things convenient for the assembly of valve body 1.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. An exhaust structure of a start-stop switch comprises a valve body (1) with a hollow cavity (11), wherein a water inlet hole (12) communicated with the hollow cavity (11) is formed in one end face of the valve body (1), a guide hole (13) communicated with the hollow cavity (11) is formed in the other end face of the valve body (1), a valve rod assembly (2) capable of moving along the axial direction of the valve body (1) and a spring (3) enabling the valve rod assembly (2) to move towards the direction far away from the guide hole (13) are arranged in the hollow cavity (11) all the time, one end of the valve rod assembly (2) penetrates through the guide hole (13), the valve rod assembly (2) comprises a sealing column (21) arranged in the hollow cavity (11) in a sliding mode, the outer peripheral face of the sealing column (21) and the hole wall of the hollow cavity (11) form dynamic sealing, and the exhaust structure is characterized in that an exhaust hole (14) communicated with the hollow cavity (11) is formed in the outer side wall, the exhaust hole (14) is opposite to the space between the sealing column (21) and the guide hole (13).

2. The exhaust structure of the start-stop switch according to claim 1, wherein the exhaust hole (14) is arranged obliquely, and the inner port of the exhaust hole (14) faces the water inlet hole (12).

3. A vent structure of a start-stop switch according to claim 1 or 2, wherein the hollow chamber (11) comprises a sealed chamber (110) communicated with the water inlet hole (12), the sealing post (21) is slidably arranged in the sealed chamber (110), and the vent hole (14) is located between the sealed chamber (110) and the guide hole (13).

4. The exhaust structure of a start-stop switch according to claim 3, characterized in that the hollow cavity (11) further comprises a stroke cavity (111) adjacent to the seal cavity (110), the stroke cavity (111) is located between the seal cavity (110) and the guide hole (13), the exhaust hole (14) is located between the stroke cavity (111) and the guide hole (13), the valve rod assembly (2) further comprises a push rod (22) and a support platform (23), one end of the push rod (22) is arranged in the guide hole (13) in a penetrating manner, the other end of the push rod is connected with the support platform (23), the support platform (23) is located between the push rod (22) and the seal column (21) and abuts against the seal column (21), and the support platform (23) is slidably arranged in the stroke cavity (111).

5. The exhaust structure of the start-stop switch according to claim 4, wherein the hollow cavity (11) further comprises a spring cavity (112) adjacent to the stroke cavity (111), the spring cavity (112) is located between the stroke cavity (111) and the guide hole (13), the exhaust hole (14) is communicated with the spring cavity (112), an inner port of the exhaust hole (14) is close to the stroke cavity (111), one end of the spring (3) abuts against the support table (23), and the other end of the spring (3) abuts against the valve body (1).

6. The exhaust structure of the start-stop switch according to claim 1 or 2, wherein the valve body (1) comprises an upper valve body (1a) and a lower valve body (1b), the upper valve body (1a) and the lower valve body (1b) are in threaded connection, and the guide hole (13) and the exhaust hole (14) are formed in the upper valve body (1 a).