CN214222176U

CN214222176U - High-sealing stop valve

Info

Publication number: CN214222176U
Application number: CN202023201179.7U
Authority: CN
Inventors: 方德淼; 王晓微
Original assignee: Zhejiang Hagong Valve Co ltd
Current assignee: Zhejiang Hagong Valve Co ltd
Priority date: 2020-12-26
Filing date: 2020-12-26
Publication date: 2021-09-17
Anticipated expiration: 2030-12-26

Abstract

A high-sealing stop valve comprises a valve body, a valve cover, a valve rod and a valve clack, wherein the valve cover is arranged above the valve body, a flow passage is formed in the valve body, a feed inlet and a discharge outlet are formed on two sides of the flow passage, a valve cavity is formed inside the valve body and the valve cover, one end of the valve rod penetrates through the valve cover and extends into the valve cavity, a guide sleeve is sleeved outside the valve rod, an outer sealing ring groove is formed in the outer wall of the guide sleeve, a first sealing element is arranged on the outer sealing ring groove and is connected with the inner wall of the valve cover, an inner sealing ring groove is formed in the inner wall of the guide sleeve, a second sealing element and a third sealing element are arranged in the inner sealing ring groove and are connected with the valve rod, contact friction between the valve rod and the valve cover is reduced by arranging the guide sleeve, and the first sealing element on the guide sleeve can solve the problem that the inner wall of the valve cover of the guide sleeve is relatively abutted and sealed; through setting up second sealing member and third sealing member, can solve the guide sleeve valve rod relative slip sealed to reach sealed effectual, long service life's characteristics.

Description

High-sealing stop valve

Technical Field

The utility model relates to the technical field of valves, concretely relates to high sealed stop valve.

Background

The stop valve, also called stop valve, is one of the most widely used valves, and it is popular because the friction between the sealing surfaces is small in the opening and closing process, it is durable, the opening height is not large, it is easy to manufacture, it is convenient to maintain, it is not only suitable for middle and low pressure, but also for high pressure. The closing principle of the stop valve is that the sealing surface of the valve clack is tightly attached to the sealing surface of the valve cover by means of the pressure of a valve rod, and the medium is prevented from flowing. The valve of China has been specified in the 'three-in-one' mode, and the flow direction of the stop valve is uniformly from top to bottom, so that the stop valve has directionality during installation. The structure length of stop valve is greater than the gate valve, and fluid resistance is big simultaneously, and long-term operation, sealing reliability is not strong.

Traditional stop valve can only guarantee the sealed between valve rod and the valve gap through sealed packing between valve rod and valve gap, but the packing needs to be changed after long-term the use, and can't be fine accomplish the assurance of revealing to zero between valve rod and the valve gap.

Disclosure of Invention

In view of this, the utility model provides a high sealed stop valve.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a high sealed stop valve, includes valve body, valve gap, valve rod and valve clack, the valve gap is established in the valve body top, forms the runner in the valve body, and the both sides of runner form feed inlet and discharge gate, the inside valve pocket that forms of valve body and valve gap, valve rod one end is run through the valve gap and is stretched into the valve pocket, the valve rod overcoat is equipped with the uide bushing, set up the external seal annular on the outer wall of uide bushing, set up first sealing member on the external seal annular, just first sealing member and valve gap inner wall connection, the inner wall of uide bushing sets up the internal seal annular, set up second sealing member and third sealing member in the internal seal annular, second sealing member and third sealing member all are connected with the valve rod.

The preferred, first sealing member includes first sealing washer, first sealing washer is kept away from first seal groove one side and is formed the arcwall face, the arcwall face includes bulge and interior recess, interior recess includes first interior recess and the interior recess of second, first interior recess and the interior recess setting of second are in the both sides of bulge, correspond in first interior recess and the interior recess of second and set up first elastic sealing ring and second elastic sealing ring, first elastic sealing ring and second elastic sealing ring both ends all correspond and connect valve gap inner wall and first sealing washer.

Preferably, the inner sealing ring groove is arranged at two ends of the valve rod penetrating through the valve cover part, a partition plate is arranged in the inner sealing ring groove, the partition plate divides the inner sealing ring groove into a first sealing ring groove and a second sealing ring groove, the second sealing element is arranged in the first sealing ring groove, and the third sealing element is arranged in the second sealing ring groove.

Preferably, the second sealing element comprises an inner sealing ring, one side of the inner sealing ring, which is connected with the first sealing ring groove, forms a connecting end, the first sealing ring groove is provided with a clamping groove corresponding to the connecting end, and the connecting end extends into the clamping groove to be connected with the first sealing ring groove.

Preferably, the second sealing element and the third sealing element have the same structure, the length of the partition plate is smaller than the depth of the inner sealing ring groove, and one end of the partition plate facing the valve rod is of an arc-shaped structure.

Preferably, the valve rod is further provided with a valve rod linkage part, the valve rod linkage part is a hand wheel, the valve rod linkage part is provided with anti-skid patterns, and the anti-skid patterns are uniformly distributed on the valve rod linkage part.

Preferably, a sealing packing is further arranged between the guide sleeve and the valve cover, a packing gland is arranged on the sealing packing, a pin shaft is fixed inside the packing gland, and an eyelet bolt in sliding connection with the pin shaft penetrates through the pin shaft.

The beneficial effects of the utility model reside in that: the contact friction between the valve rod and the valve cover is reduced by arranging the guide sleeve, and the inner wall of the valve cover of the guide sleeve can be relatively abutted and sealed by arranging the first sealing element on the guide sleeve; through setting up second sealing member and third sealing member, can solve the guide sleeve valve rod relative slip sealed to reach sealed effectual, long service life's characteristics.

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 structural view of the present invention;

fig. 2 is a schematic view of the structure of the guide sleeve of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The invention will be further described with reference to the accompanying drawings.

The utility model provides a following technical scheme:

as shown in fig. 1-2, the utility model relates to a high sealed stop valve, including valve body 6, valve gap 5, valve rod 2 and valve clack 17, the valve gap is established in 6 tops of valve body, forms runner 19 in the valve body 6, and runner 19's both sides form feed inlet 20 and discharge gate 21, the inside valve pocket that forms of valve body 6 and valve gap 5, 2 one end of valve rod runs through valve gap 5 and stretches into valve pocket 18, 2 overcoat of valve rod are equipped with uide bushing 7, set up external seal annular 22 on the uide bushing 7 outer wall, set up first sealing member 23 on the external seal annular 22, just first sealing member 23 and 5 interior wall connections of valve gap, 7 inner walls of uide bushing set up internal seal annular 24, set up second sealing member 25 and second sealing member 26 in the internal seal annular 24, second sealing member 25 and second sealing member 26 all are connected with valve rod 2.

Specifically, first sealing member 23 includes first sealing washer 13, first sealing washer 13 is kept away from external seal annular 22 one side and is formed arcwall face 27, makes the laminating of elastic sealing ring ability better and first sealing washer through setting up bulge 28 and interior recess 12 on the arcwall face 27, avoids appearing the gap to reach better sealed effect, arcwall face 27 includes bulge 28 and interior recess 12, interior recess 12 includes first interior recess and the interior recess of second, first interior recess and the interior recess setting of second are in the both sides of bulge 28, correspond in first interior recess and the interior recess of second and set up first elastic sealing ring 11 and second elastic sealing ring 31, first elastic sealing ring 11 and second elastic sealing ring 31 both ends all correspond and connect valve gap 5 inner wall and first sealing washer 13.

Specifically, the inner sealing ring groove 24 is arranged at two ends of the valve rod 2 penetrating through the valve cover 5, a partition plate 29 is arranged in the inner sealing ring groove 24, the partition plate 29 divides the inner sealing ring groove 24 into a first sealing ring groove 8 and a second sealing ring groove 30, the second sealing element 25 is arranged in the first sealing ring groove 8, and the second sealing element 26 is arranged in the second sealing ring groove 30.

Specifically, the inner sealing ring groove 24 and the outer sealing ring groove 22 are arranged, so that sealing effects between the valve rod 2 and the valve seat 5 and between the valve rod 2 and the guide sleeve 7 can be achieved, bidirectional sealing of the valve rod 2 is achieved, and sealing performance is improved.

Specifically, second sealing member 25 includes inner seal 31, inner seal 31 and first seal ring groove are connected one side and are formed link 9, first seal ring groove corresponds link 9 and sets up the draw-in groove, link 9 stretches into the draw-in groove (not shown) and is connected with first seal ring groove 8.

Specifically, the second sealing element 25 and the second sealing element 26 have the same structure, the length of the partition 29 is smaller than the depth of the inner sealing ring groove 24, and one end of the partition 29, which faces the valve rod 2, is of an arc-shaped structure.

Specifically, still set up valve rod interlock 1 on the valve rod 2, valve rod interlock 1 is the hand wheel, set up anti-skidding decorative pattern (not shown) on the valve rod interlock 1, the even distribution of anti-skidding decorative pattern is on valve rod interlock 1, makes the user when rotating the hand wheel, increases the frictional force with between the hand wheel through setting up anti-skidding decorative pattern to reach better control to the hand wheel.

Specifically, a sealing packing 4 is further arranged between the guide sleeve 7 and the valve cover, a packing gland 3 is arranged on the sealing packing 4, a pin shaft is fixed inside the packing gland 3, and an eyelet bolt in sliding connection with the pin shaft penetrates through the pin shaft.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a high sealed stop valve, includes valve body, valve gap, valve rod and valve clack, the valve gap is established in the valve body top, forms the runner in the valve body, and the both sides of runner form feed inlet and discharge gate, the inside valve pocket that forms of valve body and valve gap, its characterized in that: valve rod one end is run through the valve gap and is stretched into the valve pocket, the valve rod overcoat is equipped with the uide bushing, set up the external seal annular on the outer wall of uide bushing, set up first sealing member on the external seal annular, just first sealing member meets with the valve gap inner wall is sealed, the inner wall of uide bushing sets up the inner seal annular, set up second sealing member and third sealing member in the inner seal annular, second sealing member and third sealing member all meet with the valve rod is sealed.

2. The high seal shut-off valve of claim 1, wherein: the first sealing part comprises a first sealing ring, one side of the first sealing groove is far away from the first sealing ring to form an arc-shaped surface, the arc-shaped surface comprises a protruding portion and an inner concave portion, the inner concave portion comprises a first inner concave portion and a second inner concave portion, the first inner concave portion and the second inner concave portion are arranged on two sides of the protruding portion, a first elastic sealing ring and a second elastic sealing ring are correspondingly arranged in the first inner concave portion and the second inner concave portion, and two ends of the first elastic sealing ring and two ends of the second elastic sealing ring are in sealing connection with the inner wall of the valve cover and the first sealing ring.

3. The high seal shut-off valve of claim 1, wherein: the valve rod is run through the both ends of valve gap part in the setting of interior seal annular, set up the baffle in the interior seal annular, the baffle is separated into first seal annular and second seal annular with the interior seal annular, the second sealing member is installed in first seal annular, the third sealing member is installed in the second seal annular.

4. The high seal shut-off valve of claim 3, wherein: the second sealing element comprises an inner sealing ring, one side of the inner sealing ring, which is connected with the first sealing ring groove, forms a connecting end, the first sealing ring groove corresponds to the connecting end and is provided with a clamping groove, and the connecting end extends into the clamping groove to be connected with the first sealing ring groove.

5. The high seal shut-off valve of claim 3, wherein: the structure of second sealing member and third sealing member is the same, the external diameter of baffle is less than the degree of depth of interior seal ring groove, just the baffle is cambered surface structure towards valve rod one end.

6. The high seal shut-off valve of claim 1, wherein: the anti-skid valve is characterized in that a valve rod linkage part is further arranged on the valve rod, the valve rod linkage part is a hand wheel, anti-skid patterns are arranged on the valve rod linkage part, and the anti-skid patterns are uniformly distributed on the valve rod linkage part.

7. The high seal shut-off valve of claim 4, wherein: and a sealing packing is further arranged between the guide sleeve and the valve cover, a packing gland is arranged on the sealing packing, a pin shaft is fixed in the packing gland, and an eyelet bolt in sliding connection with the pin shaft penetrates through the pin shaft.