CN214146664U

CN214146664U - Micro flow control valve

Info

Publication number: CN214146664U
Application number: CN202023192524.5U
Authority: CN
Inventors: 程路; 李龙
Original assignee: Xuzhou Arca Control Valve Co ltd
Current assignee: Xuzhou Arca Control Valve Co ltd
Priority date: 2020-12-27
Filing date: 2020-12-27
Publication date: 2021-09-07
Anticipated expiration: 2030-12-27

Abstract

The utility model relates to a micro flow control valve, which comprises a valve body, a detachable valve cover fixed on the top of the valve body, a valve rod which is arranged in the valve cover in a sealing way and can move up and down, and a valve core fixed at the lower end of the valve rod, wherein a valve cavity is arranged at the top of the valve body, a transversely distributed liquid inlet hole and a transversely distributed liquid outlet hole are respectively arranged at the left side and the right side of the valve body, and a flow channel which is distributed in an inclined way is arranged between the inner end of the liquid inlet hole and the left inner wall of the valve cavity; the inner end of the liquid outlet hole is communicated with the bottom of the valve cavity; the utility model discloses a case can realize keeping with the valve seat all the time with the help of second step axle the automatic centering and the concentric state, and then makes the case can not take place slight skew because of the material impact force to there is not the clearance after enabling case and the valve seat contact, thereby realized complete sealedly.

Description

Micro flow control valve

Technical Field

The utility model relates to a small flow control valve.

Background

The flow regulating valve is an intuitive, simple and convenient flow regulating and controlling device; the micro flow regulating valve is a regulating valve with small flow capacity as the name implies; in the existing micro flow regulating valve, a valve core is inevitably subjected to slight deviation due to the influence of material impact force, so that the valve core cannot be concentric with a valve seat, and a certain gap still exists after the valve core is contacted with the valve seat, so that complete sealing cannot be realized, and further improvement is to be realized.

SUMMERY OF THE UTILITY MODEL

To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that a small flow control valve that enables case and disk seat self-centering and remain the concentric condition all the time in order to realize complete sealing is provided.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a micro flow regulating valve comprises a valve body, a detachable valve cover fixed on the top of the valve body, a valve rod hermetically arranged in the valve cover and capable of moving up and down, and a detachable valve core fixed at the lower end of the valve rod, and is characterized in that a valve cavity is formed in the top of the valve body, a liquid inlet hole and a liquid outlet hole which are transversely distributed are formed in the left side and the right side of the valve body respectively, and an obliquely distributed flow channel is formed between the inner end of the liquid inlet hole and the inner wall of the left side of the valve cavity; the inner end of the liquid outlet hole is communicated with the bottom of the valve cavity, a detachable supporting seat is further embedded and fixed at the bottom of the valve cavity, and a valve seat cover and a valve seat which are sequentially distributed from top to bottom are further concentrically embedded in the supporting seat; the lower end of the valve seat cover is tightly propped against the upper end of the valve seat, a first step shaft is formed downwards at the lower end of the valve core, the first step shaft is inserted into the valve seat cover, and the edge of the end part of the first step shaft is tightly pressed on the edge of an opening at the upper end of the valve seat; a second step shaft is formed downwards in the center of the end part of the first step shaft, the second step shaft is inserted into the valve seat in a sealing mode, and two inclined planes which are diagonally arranged with each other are formed in the outer wall of the end part of the second step shaft.

Preferably, still include seal assembly, seal assembly includes gland, dust ring, O type circle, star type circle and general stopper ring, the gland cover is established outside the valve rod and detachable embedding is at the top of valve gap, dust ring, star type circle and general stopper ring down inlay in proper order from last and establish in the gland and all sealing cover establish on the valve rod, O type circle cover inlays outside the gland.

Preferably, a disc spring is further arranged between the valve seat cover and the valve seat.

Preferably, the bottom of the valve cover is embedded with vertically distributed shaft sleeves, and the shaft sleeves are sleeved on the outer side of the upper end of the valve core.

Compared with the prior art, the utility model has the advantages of: the utility model discloses a case can realize keeping with the valve seat all the time with the help of second step axle the automatic centering and the concentric state, and then makes the case can not take place slight skew because of the material impact force to there is not the clearance after enabling case and the valve seat contact, thereby realized complete sealedly.

Drawings

FIG. 1 is a cross-sectional view of the present invention;

FIG. 2 is an enlarged view of the partial structure of the present invention at A;

fig. 3 is an enlarged view of a part of the structure of the present invention at B.

Detailed Description

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.

As shown in fig. 1 to 3, a micro flow control valve comprises a valve body 1, a detachable valve cover 2 fixed on the top of the valve body 1, a valve rod 3 hermetically arranged in the valve cover 2 and capable of moving up and down, and a valve core 4 detachably fixed at the lower end of the valve rod 3, wherein a valve cavity 101 is formed in the top of the valve body 1, a liquid inlet hole 103 and a liquid outlet hole 104 which are transversely distributed are formed in the left side and the right side of the valve body 1 respectively, and a flow channel 102 which is obliquely distributed is formed between the inner end of the liquid inlet hole 103 and the inner wall of the left side of the valve cavity 101; the inner end of the liquid outlet hole 104 is communicated with the bottom of the valve cavity 101, a detachable supporting seat 7 is further embedded and fixed at the bottom of the valve cavity 101, and a valve seat cover 9 and a valve seat 8 which are sequentially distributed from top to bottom are further concentrically embedded in the supporting seat 7; the lower end of the valve seat cover 9 is tightly pressed against the upper end of the valve seat 8, the lower end of the valve core 4 is downwards provided with a first step shaft 41, the first step shaft 41 is inserted into the valve seat cover 9, and the end edge of the first step shaft 41 is tightly pressed on the edge of the opening at the upper end of the valve seat 8; a second step shaft 42 is formed downward from the center of the end of the first step shaft 41, the second step shaft 42 is inserted into the valve seat 8 in a sealing manner, and two inclined surfaces 43 arranged diagonally to each other are formed on the outer wall of the end of the second step shaft 42.

The utility model provides a small flow control valve, still includes seal assembly 6, seal assembly 6 includes gland 61, dust ring 62, O type circle 63, star type circle 64 and general stopper ring 65, and gland 61 cover is established outside valve rod 3 and detachable embedding is at the top of valve gap 2, and dust ring 62, star type circle 64 and general stopper ring 65 from last down inlay in proper order and establish in gland 61 and all seal cover establish on valve rod 3, and O type circle 63 cover inlays outside gland 61 in order to play the sealing action.

A disc spring 10 is also arranged between the valve seat cover 9 and the valve seat 8.

The bottom of the valve cover 2 is also embedded with a vertically distributed shaft sleeve 5, and the shaft sleeve 5 is sleeved outside the upper end of the valve core 4.

Working principle; the material enters the valve cavity 101 through the liquid inlet hole 103 and the flow channel 102, the valve rod 3 is driven to move vertically upwards, the edge of the end part of the first step shaft 41 on the valve core 4 is further pulled to leave the edge of the opening at the upper end of the valve seat 8, when the upper sides of the two inclined planes 43 start to leave the valve seat 8, a gap is formed between the two inclined planes 43 and the inner wall of the valve seat 8, so that the material enters the liquid outlet hole 104 through the two gaps and is discharged outwards, and the flow rate is gradually increased along with the continuous upward movement of the valve core 4; the second step shaft 42 always slides up and down in the valve seat 8, thereby effectively ensuring that the end of the first step shaft 41 and the upper opening of the valve seat 8 always keep concentric distribution to realize automatic centering.

If the valve needs to be closed, the valve rod 3 is driven to vertically move downwards, and then the valve core 4 is driven to move downwards according to the same principle until the edge of the end part of the first step shaft 41 is pressed on the edge of the opening at the upper end of the valve seat 8 again.

The utility model discloses a case 4 can realize with the help of second step axle 42 with the automatic centering of disk seat 8 and remain concentric state throughout, and then make the case can not take place slight skew because of the material impact force to there is not the clearance after enabling case and disk seat contact, thereby realized complete sealedly.

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 the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A micro flow regulating valve comprises a valve body, a detachable valve cover fixed on the top of the valve body, a valve rod hermetically arranged in the valve cover and capable of moving up and down, and a detachable valve core fixed at the lower end of the valve rod, and is characterized in that a valve cavity is formed in the top of the valve body, a liquid inlet hole and a liquid outlet hole which are transversely distributed are formed in the left side and the right side of the valve body respectively, and an obliquely distributed flow channel is formed between the inner end of the liquid inlet hole and the inner wall of the left side of the valve cavity; the inner end of the liquid outlet hole is communicated with the bottom of the valve cavity, a detachable supporting seat is further embedded and fixed at the bottom of the valve cavity, and a valve seat cover and a valve seat which are sequentially distributed from top to bottom are further concentrically embedded in the supporting seat; the lower end of the valve seat cover is tightly propped against the upper end of the valve seat, a first step shaft is formed downwards at the lower end of the valve core, the first step shaft is inserted into the valve seat cover, and the edge of the end part of the first step shaft is tightly pressed on the edge of an opening at the upper end of the valve seat; a second step shaft is formed downwards in the center of the end part of the first step shaft, the second step shaft is inserted into the valve seat in a sealing mode, and two inclined planes which are diagonally arranged with each other are formed in the outer wall of the end part of the second step shaft.

2. The micro flow control valve according to claim 1, further comprising a sealing assembly, wherein the sealing assembly comprises a gland, a dust ring, an O-shaped ring, a star-shaped ring and a universal plug ring, the gland is sleeved outside the valve rod and detachably embedded at the top of the valve cover, the dust ring, the star-shaped ring and the universal plug ring are sequentially embedded in the gland from top to bottom and are all hermetically sleeved on the valve rod, and the O-shaped ring is embedded outside the gland.

3. The micro flow control valve as claimed in claim 2, wherein a disc spring is further provided between the valve seat cover and the valve seat.

4. The micro flow control valve as claimed in claim 1, wherein a vertically distributed shaft sleeve is further embedded in the bottom of the valve cover, and the shaft sleeve is sleeved outside the upper end of the valve core.