CN209875593U

CN209875593U - Pilot valve

Info

Publication number: CN209875593U
Application number: CN201920030285.1U
Authority: CN
Inventors: 刘林英
Original assignee: Guangzhou Jingge Water-Purification Equipment Technology Co Ltd
Current assignee: Guangzhou Jingge Water-Purification Equipment Technology Co Ltd
Priority date: 2019-01-09
Filing date: 2019-01-09
Publication date: 2019-12-31
Anticipated expiration: 2029-01-09

Abstract

The utility model relates to the valve field, and discloses a pilot valve, which comprises an isolator base, wherein the isolator base is of a hollow structure and the upper end of the isolator base is open, a cover body is clamped on the isolator base, an isolator main body is arranged in the isolator base, a first mounting seat is also arranged in the isolator base, the first mounting seat is respectively positioned at the left side and the right side of the isolator main body, a first cavity is respectively arranged on the first mounting seat, a second mounting seat is fixedly connected on the inner wall of the first cavity, a second cavity is respectively arranged on the second mounting seat, a sliding pipe is arranged in the second cavity in a sliding way, a second fixing ring and a first fixing ring are respectively and fixedly connected at the two ends of the sliding pipe, a first limiting ring and a second limiting ring are respectively connected at the ends, which are far away from each other, of the first fixing ring and the second fixing ring, the isolator base is arranged at a position to be fixed through screws, a threaded, the screw is installed in the threaded hole by rotating the screw, and the fault tolerance of the position of the threaded hole is increased.

Description

Pilot valve

Technical Field

The utility model relates to a valve field, more specifically says, in particular to pilot valve.

Background

The pilot valve is an auxiliary valve used for operating a control mechanism in other valves or elements, and consists of a wet-type valve electromagnet, a valve core, a transmission plunger, a valve sleeve, a thimble rod, a steel ball seat, a return spring and the like. The hard seal butterfly valve core is in threaded connection with the valve body. One end of the transmission plunger is connected with the electromagnet armature, and the other end of the transmission plunger props against the steel ball. Therefore, the two steel balls and the thimble rod are in linkage relation no matter under the thrust of the electromagnet at the upper end or the acting force of the spring at the lower end. And a section of annular control cavity is respectively arranged between the two ends of the thimble rod and the valve core and is respectively communicated with the radial pore passage on the valve core. The electromagnetic valve is a two-position three-way double-ball normally closed electromagnetic valve.

However, in the conventional pilot valve, when maintenance and replacement are required, the pilot valve body needs to be removed, and the pipeline is in an open state, so that fluid cannot be conveyed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pilot valve to solve current pilot valve and need take off the pilot valve main part when needs maintain the change, the pipeline is in the state of opening a way, can't carry out the problem of fluidic transport.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a pilot valve comprises a first valve body part, a second valve body part, a third valve body part and a fourth valve body part which are connected in pairs, wherein the first valve body part, the second valve body part, the third valve body part and the fourth valve body part are arranged on the first valve body part and are provided with an inlet and a first outlet which are communicated, a first cavity is formed between the second valve body part and the third valve body part, the third valve body part is provided with an insertion hole, a second cavity is formed between the third valve body part and the fourth valve body part, two ends of the insertion hole are respectively connected with the second cavity and the first cavity, the first cavity is communicated with the inlet, a first valve core for sealing the inlet is placed in the first cavity, an insertion rod is fixedly connected to the first valve core and is inserted into the insertion hole, and a second valve core is fixedly connected to the upper end of the insertion rod, the upper end fixedly connected with reset spring of second case, reset spring's upper end fixedly connected with stopper, the stopper is placed in spacing cavity, the first threaded rod of upper end fixedly connected with of stopper, threaded connection is in the valve body fourth part, be equipped with the second export on the valve body second part, the second export communicates with first cavity, be equipped with on the valve body first part with import and first cavity between confined sealing device, can effectually carry out the guide, effectual buffering fluid pressure, when needing to dismantle the guide valve main part and get off to maintain and change, can seal the pipeline, still can carry out fluidic transport this moment.

Further, the first rotating rod is fixedly connected to the upper end of the first threaded rod, the first threaded rod is convenient to rotate, then the limiting block is driven to move up and down, and the state of the reset spring is controlled to be compressed in the process that the limiting block moves.

Further, sealing device includes second threaded rod, swivel nut, second dwang, rotation connecting rod, current-limiting plate, the sealed pad of second and sealed the pad of first sealing, second threaded rod pivoted is installed in the first part of valve body, the one end fixed connection of second dwang and second threaded rod, the swivel nut of installing that the second threaded rod is outer to rotate, the other end fixedly connected with current-limiting plate of second threaded rod, the one end that the second threaded rod was kept away from to current-limiting plate is installed on the import inner wall through rotating connecting rod pivoted, first sealed pad and second sealed pad are located the upper and lower both sides of current-limiting plate, and the upside that can effectual silence import is sealed, makes the fluid can not enter into first cavity.

Furthermore, the first sealing gasket and the second sealing gasket are arc-shaped and are arranged oppositely, and when the pair of first sealing gaskets abut against the flow limiting plate, the upper side of the inlet can be effectively sealed.

The working principle is as follows:

the fluid is accessed through the inlet, when the fluid pressure is normal, the fluid is conveyed through the first outlet, when the fluid pressure is overlarge, the fluid enters the first cavity through the inlet, the fluid extrudes the first valve core, the first valve core moves upwards, the reset spring contracts, the fluid is conveyed in a multi-path mode through the second outlet and the first outlet, the fluid pressure can be effectively buffered, the pilot valve needs to be periodically repaired and replaced after being used for a period of time, at the moment, the device on the upper portion of the first portion of the valve body is taken down for repair, the second rotating rod is rotated to drive the second threaded rod to rotate, the flow limiting plate is driven to gradually rotate to a horizontal state in the rotating process of the second threaded rod, then the rotating screw sleeve is abutted against the outer wall of the first portion of the valve body, at the moment, the rotating rod cannot rotate, the flow limiting plate is abutted against the upper and lower first sealing gaskets and the second, fluid may be delivered through the first outlet.

Compared with the prior art, the utility model has the advantages of:

this scheme can effectually carry out the guide, and effectual buffering fluid pressure when needs are dismantled the pilot valve main part and get off to maintain the change, can seal the pipeline, still can carry out fluidic transport this moment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the internal structure of the utility model when opened;

FIG. 2 is a schematic view of the structure at A in FIG. 1;

fig. 3 is a schematic structural diagram of the current-limiting plate of the present invention.

Description of reference numerals: the valve comprises a valve body 1, a valve body 2, a valve body 3, a valve body third part 4, a valve body fourth part 4, an inlet 5, a first outlet 6, a first cavity 7, a first valve core 8, a jack 9, an inserted link 10, a second cavity 11, a second valve core 12, a return spring 13, a limiting block 14, a limiting cavity 15, a first threaded rod 16, a first rotating rod 17, a second outlet 18, a second threaded rod 19, a threaded sleeve 20, a second rotating rod 21, a flow limiting plate 22, a rotating connecting rod 23, a first sealing gasket 24 and a second sealing gasket 25.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.

Referring to fig. 1-3, a pilot valve includes a first valve body part 1, a second valve body part 2, a third valve body part 3, and a fourth valve body part 4, wherein the first valve body part 1, the second valve body part 2, the third valve body part 3, and the fourth valve body part 4 are connected in pairs, the first valve body part 1 is provided with an inlet 5 and a first outlet 6, the inlet 5 is communicated with the first outlet 6, a first cavity 7 is formed between the second valve body part 2 and the third valve body part 3, the third valve body part 3 is provided with an insertion hole 9, a second cavity 11 is formed between the third valve body part 3 and the fourth valve body part 4, two ends of the insertion hole 9 are respectively connected with the second cavity 11 and the first cavity 7, the first cavity 7 is communicated with the inlet 5, a first valve core 8 for sealing the inlet 5 is disposed in the first cavity 7, an insertion rod 10 is fixedly connected to the first valve core 8, the inserted bar 10 is inserted in the jack 9, the upper end fixedly connected with second valve core 12 of inserted bar 10, the upper end fixedly connected with reset spring 13 of second valve core 12, the upper end fixedly connected with stopper 14 of reset spring 13, stopper 14 is placed in spacing cavity 15, the upper end fixedly connected with first threaded rod 16 of stopper 14, threaded connection is in valve body fourth part 4, be equipped with second export 18 on the valve body second part 2, second export 18 and first cavity 7 intercommunication, be equipped with on the valve body first part 1 with import 5 and first cavity 7 between the confined sealing device, can effectually carry out the guide, effectual buffering fluid pressure, when needing to dismantle the pilot valve main part and maintain and change, can seal the pipeline, still can carry out fluidic transport this moment.

The upper end of the first threaded rod 16 is fixedly connected with a first rotating rod 17, the first threaded rod 16 is convenient to rotate, the limiting block 14 is driven to move up and down, the compression state of the reset spring 13 is controlled in the moving process of the limiting block 14, the sealing device comprises a second threaded rod 19, a threaded sleeve 20, a second rotating rod 21, a rotating connecting rod 23, a flow limiting plate 22, a second sealing gasket 25 and a first sealing gasket 24, the second threaded rod 19 is rotatably installed in the first part 1 of the valve body, the second rotating rod 21 is fixedly connected with one end of the second threaded rod 19, the threaded sleeve 20 is rotatably installed outside the second threaded rod 19, the other end of the second threaded rod 19 is fixedly connected with the flow limiting plate 22, one end, far away from the second threaded rod 19, of the flow limiting plate 22 is rotatably installed on the inner wall of the inlet 5 through the rotating connecting rod 23, the first sealing gasket 24 and the second sealing gasket 25 are located on the upper side, so that the fluid cannot enter the first cavity 7, the first sealing gasket 24 and the second sealing gasket 25 are arc-shaped, the first sealing gasket 24 and the second sealing gasket 25 are oppositely arranged, when the pair of first sealing gaskets 24 are abutted against the flow limiting plate 22, the upper side of the inlet 5 can be effectively sealed,

fluid is accessed through the inlet 5, when the fluid pressure is normal, the fluid is conveyed through the first outlet 6, when the fluid pressure is overlarge, the fluid enters the first cavity 7 through the inlet 5, the fluid extrudes the first valve core 8, the first valve core 8 moves upwards, the reset spring 13 contracts, the fluid is conveyed in multiple ways through the second outlet 18 and the first outlet 6, the fluid pressure can be effectively buffered, the pilot valve needs to be periodically overhauled and replaced after being used for a period of time, at the moment, a device on the upper part of the first part 1 of the valve body is taken down for overhauling, the second rotating rod 21 is rotated, the second rotating rod 21 drives the second threaded rod 19 to rotate,

the second threaded rod 19 drives the restrictor plate 22 to gradually rotate to a horizontal state in the rotating process, then the threaded sleeve 20 is rotated to abut against the outer wall of the first part 1 of the valve body, at this time, the second rotating rod 21 cannot rotate, the restrictor plate 22 abuts against the upper and lower first sealing gaskets 24 and the second sealing gasket 25, at this time, the upper side of the inlet 5 is sealed, and fluid can be conveyed through the first outlet 6, which is the working principle of the pilot valve, and the content which is not described in detail in the specification belongs to the prior art which is well known to those skilled in the art.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, various changes and modifications can be made by the owner within the scope of the appended claims, and the protection scope of the present invention should not be exceeded by the claims.

Claims

1. The utility model provides a pilot valve, includes valve body first part (1), valve body second part (2), valve body third part (3) and valve body fourth part (4), and valve body first part (1), valve body second part (2), valve body third part (3) and valve body fourth part (4) two liang of connections, its characterized in that: an inlet (5) and a first outlet (6) are formed in the first valve body part (1), the inlet (5) is communicated with the first outlet (6), a first cavity (7) is formed between the second valve body part (2) and the third valve body part (3), a jack (9) is arranged on the third valve body part (3), a second cavity (11) is formed between the third valve body part (3) and the fourth valve body part (4), two ends of the jack (9) are respectively connected with the second cavity (11) and the first cavity (7), the first cavity (7) is communicated with the inlet (5), a first valve core (8) used for sealing the inlet (5) is arranged in the first cavity (7), an insert rod (10) is fixedly connected to the first valve core (8), the insert rod (10) is inserted into the jack (9), and a second valve core (12) is fixedly connected to the upper end of the insert rod (10), the upper end of the second valve core (12) is fixedly connected with a return spring (13), the upper end of the return spring (13) is fixedly connected with a limiting block (14), the limiting block (14) is placed in a limiting cavity (15), the upper end of the limiting block (14) is fixedly connected with a first threaded rod (16), the threaded connection is formed in a fourth part (4) of the valve body, a second outlet (18) is formed in the second part (2) of the valve body, the second outlet (18) is communicated with the first cavity (7), and a sealing device which is sealed between the inlet (5) and the first cavity (7) is formed in the first part (1) of the valve body.

2. A pilot valve as claimed in claim 1, wherein: the upper end of the first threaded rod (16) is fixedly connected with a first rotating rod (17).

3. A pilot valve as claimed in claim 1, wherein: sealing device includes second threaded rod (19), swivel nut (20), second dwang (21), rotation connecting rod (23), current-limiting plate (22), the sealed pad of second (25) and first sealed pad (24), second threaded rod (19) pivoted is installed in valve body first part (1), the one end fixed connection of second dwang (21) and second threaded rod (19), second threaded rod (19) are outer to be rotated install swivel nut (20), the other end fixedly connected with current-limiting plate (22) of second threaded rod (19), the one end that second threaded rod (19) were kept away from in current-limiting plate (22) is installed on import (5) inner wall through rotation connecting rod (23) pivoted, the sealed upper and lower both sides that fill up (25) in current-limiting plate (22) of first sealed pad (24) and second.

4. A pilot valve as claimed in claim 3, wherein: the first sealing gasket (24) and the second sealing gasket (25) are arc-shaped, and the first sealing gasket (24) and the second sealing gasket (25) are arranged oppositely.