CN213479235U

CN213479235U - Forged high-pressure self-sealing stop valve

Info

Publication number: CN213479235U
Application number: CN202021009852.4U
Authority: CN
Inventors: 刘虎
Original assignee: Zhejiang Mingyi Valve Technology Co ltd
Current assignee: Zhejiang Mingyi Valve Technology Co ltd
Priority date: 2020-05-28
Filing date: 2020-05-28
Publication date: 2021-06-18
Anticipated expiration: 2030-05-28

Abstract

The utility model relates to the technical field of stop valves, in particular to a forged high-pressure self-sealing stop valve, which comprises a valve body, wherein a left connecting flange is welded at a left end valve port of the valve body, a right connecting flange is welded at a right end valve port of the valve body, a valve clack is fixedly arranged inside the valve body, a valve rod is fixedly arranged above the valve clack and positioned inside the valve body, and the valve rod sequentially penetrates through a sealing nut, a packing pressing sleeve, a packing pressing plate, a valve rod nut and a hand wheel from bottom to top, the switch is light and has small moment, and the problem of difficult opening and closing of the high-pressure ultrahigh-pressure valve is successfully solved.

Description

Forged high-pressure self-sealing stop valve

Technical Field

The utility model relates to a stop valve technical field specifically is a forge high pressure self sealss stop valve.

Background

At present, a forged high-pressure self-sealing stop valve is a structure that a hand wheel directly drives a valve rod to drive the valve rod, so that the valve rod is rotated and similar to a gate valve, the valve cavity and a valve clack are axially fixed, and the valve rod is not rotated, so that the defects that the high-pressure stop valve is large in opening and closing moment and a filler is easy to leak are overcome, and the problem that the high-pressure ultrahigh-pressure valve is difficult to open and close is caused by light and large.

To sum up, the utility model provides a forge high pressure self sealss stop valve and solve this type of problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a forge high pressure self sealss stop valve to solve the problem that proposes in the above-mentioned background art.

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

a forged high-pressure self-sealing stop valve comprises a valve body, wherein a left connecting flange is welded at a left end valve port of the valve body, a right connecting flange is welded at a right end valve port of the valve body, a valve clack is fixedly arranged inside the valve body, a valve rod is fixedly arranged above the valve clack and inside the valve body, the valve rod sequentially penetrates through a sealing nut, a packing pressing sleeve, a packing pressing plate, a valve rod nut and a hand wheel from bottom to top, the sealing nut is connected to the valve rod and inside the valve body, a sealing ring is fixedly arranged at the contact position of the sealing nut and the side wall inside the valve body, a valve cover is sleeved on the inner wall above the sealing ring and at the port of the valve body, the end part of the sealing nut penetrates through the valve cover and extends to the upper part of the valve cover to be connected with a splicing cap, a first packing is filled at the contact position of the, the packing pressing device is characterized in that a packing pressing sleeve is fixedly arranged above the first packing and on the end face of the sealing nut, a packing pressing plate is fixedly arranged above the packing pressing sleeve, a movable joint bolt is connected to the packing pressing plate in a threaded manner, one end of the movable joint bolt is fixedly connected to a pin, the pin is fixedly arranged on the valve cover, the other end of the movable joint bolt penetrates through the packing pressing plate and is positioned above the packing pressing plate, a first nut is connected to the other end of the movable joint bolt in a threaded manner, a gasket is arranged at the joint of the first nut and the packing pressing plate and is positioned above the movable joint bolt, a valve rod nut is arranged above the packing pressing plate and is connected with a hand wheel through a plane bearing, and a.

Preferably, the left connecting flange and the right connecting flange have the same structural size.

Preferably, the first filler is flexible graphite-sandwiched stainless steel wires and is symmetrically arranged based on a second filler as an axis, and the second filler is flexible graphite.

Preferably, the handwheel is knurled, and the sealing ring is a metal rubber sealing ring.

Preferably, the plane bearings are arranged in two groups.

Preferably, the connection modes of the valve rod, the sealing nut, the packing pressing sleeve and the packing pressing plate are all in rotating connection, and the connection modes of the valve rod and the valve rod nut are all in threaded connection.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses in, forge high pressure self sealss stop valve through the design and change original hand wheel direct drive valve rod into through nut drive valve rod, make the valve rod not produce the structure of rotatory similar gate valve, make the valve rod nonrotation at valve pocket and valve clack axial fixity to reach the big defect of easily leaking with the filler culvert of high pressure stop valve switch moment. The original common nut is changed into a nut driving structure with plane bearings on two sides, the switch is light and has small moment, and the problem of difficult switching of the high-pressure ultrahigh-pressure valve is successfully solved.

2. The utility model discloses in, it is more reasonable to forge high pressure self sealss through the structure in this scheme of equipment and original and end to compare structural design, and the result of use is more obvious and the operation is simpler, consequently more suitable using widely on a large scale.

Drawings

FIG. 1 is a schematic view of the whole structure of the present invention;

fig. 2 is an enlarged schematic structural diagram of the utility model a.

In the figure: 1-valve body, 2-valve flap, 3-valve rod, 4-sealing nut, 5-sealing nut, 6-valve cover, 7-first packing, 8-second packing, 9-pin, 10-swing bolt, 11-splicing cap, 12-packing pressing sleeve, 13-packing pressing plate, 14-gasket, 15-first nut, 16-valve rod nut, 17-plane bearing, 18-hand wheel, 19-second nut, 101-left connecting flange and 102-right connecting flange.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution:

a forged high-pressure self-sealing stop valve comprises a valve body 1, a left connecting flange 101 is welded at a left end valve port of the valve body 1, a right connecting flange 102 is welded at a right end valve port of the valve body 1, a valve clack 2 is fixedly arranged inside the valve body 1, a valve rod 3 is fixedly arranged above the valve clack 2 and inside the valve body 1, the valve rod 3 sequentially penetrates through a sealing nut 4, a packing pressing sleeve 12, a packing pressing plate 13, a valve rod nut 16 and a hand wheel 18 from bottom to top, the sealing nut 4 is connected to the valve rod 3 and inside the valve body 1, a sealing ring 5 is fixedly arranged at a contact position of the sealing nut 4 and a side wall inside the valve body 1, a valve cover 6 is sleeved on an inner wall above the sealing ring 5 and at the port of the valve body 1, the end part of the sealing nut 4 penetrates through the valve cover 6 and extends to be connected with a split cap, the second packing 8 is filled above the first packing 7 and inside the gland nut 4, a packing pressing sleeve 12 is fixedly arranged above the first packing 7 and on the end face of the gland nut 4, a packing pressing plate 13 is fixedly arranged above the packing pressing sleeve 12, a movable joint bolt 10 is connected to the packing pressing plate 13 through a thread, one end of the movable joint bolt 10 is fixedly connected to a pin 9, the pin 9 is fixedly arranged on the bonnet 6, the other end of the movable joint bolt 10 penetrates through the packing pressing plate 13 and is connected to a first nut 15 through a thread above the packing pressing plate 13, a gasket 14 is arranged at the joint of the first nut 15 and the packing pressing plate 13 and is located on the movable joint bolt 10, a valve rod nut 16 is arranged above the packing pressing plate 13, the valve rod nut 16 is connected with a hand wheel 18 through a plane bearing 17, and a second nut 19 is fixedly arranged at the.

The utility model discloses work flow: during assembly, according to the assembly process of the corrugated pipe stop valve, a valve body 1, a valve clack 2, a valve rod 3, a sealing nut 4, a sealing nut 5, a valve cover 6, a first filler 7, a second filler 8, a pin 9, an eyelet bolt 10, a split cap 11, a filler pressure sleeve 12, a filler pressure plate 13, a gasket 14, a first nut 15, a valve rod nut 16, a plane bearing 17, a hand wheel 18 and a second nut 19 are assembled with one another in sequence, after the assembly process is completed, the original hand wheel 18 directly drives the valve rod 3 to drive the valve rod 3 through the nut by designing the forged high-pressure self-sealing stop valve, so that the valve rod 3 does not generate a rotary structure similar to a gate valve, the valve cavity of the valve body and the valve clack 2 are axially fixed, the valve rod 3 does not rotate, and the defects 1 that the opening and closing torque of the high-pressure stop valve is large and the filler is easy to leak are overcome, the switch is light and has small moment, and the problem of difficult opening and closing of the high-pressure ultrahigh-pressure valve is successfully solved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a forge high pressure self sealss stop valve, includes valve body (1), its characterized in that: the left end valve port welding of valve body (1) has left flange (101), the right-hand member valve port welding of valve body (1) has right flange (102), the fixed valve clack (2) that is equipped with in inside of valve body (1), the top of valve clack (2) and the fixed valve rod (3) that is located the inside of valve body (1), valve rod (3) from the bottom up run through gland nut (4), pack and press cover (12), packing clamp plate (13), valve rod nut (16) and hand wheel (18) in proper order, the internal connection who is located valve body (1) on valve rod (3) and be connected with gland nut (4), gland nut (4) and the fixed sealing washer (5) that is equipped with of the inside lateral wall contact department of valve body (1), the top of sealing washer (5) and the inner wall that is located valve body (1) port department have cup jointed valve gap (6), the tip of gland nut (4) runs through valve gap (6) and extends to valve gap (6) top and is (11) The sealing structure of the valve comprises a valve body (1), a sealing nut (4), a first packing (7), a second packing (8), a packing pressing sleeve (12), a packing pressing plate (13), a swing bolt (10), a pin (9), a gasket (14), a first swing nut (15), a first nut (15), a gasket (14), a second swing bolt (10), a gasket (14), a gasket and a sealing gasket (13) are arranged at the joint of the first nut (15) and the packing pressing plate (13) and the swing bolt (10), wherein the first packing (7) is arranged above the first packing (7) and inside the sealing nut (4), the packing pressing sleeve (12) is fixedly arranged above the first packing (7) and on the end surface of the sealing nut (4), the pin (9) is fixedly arranged on a valve cover (6), the swing bolt (10) is in threaded connection with the swing bolt (10), the other end of the packing pressing plate (13) is connected with the swing bolt (10) in a threaded manner, valve-stem nut (16) above packing clamp plate (13), valve-stem nut (16) are connected with hand wheel (18) through flat bearing (17), the fixed second nut (19) that is equipped with in center department of hand wheel (18).

2. The forged high pressure self-sealing stop valve of claim 1, wherein: the left connecting flange (101) and the right connecting flange (102) are the same in structural size.

3. The forged high pressure self-sealing stop valve of claim 1, wherein: the first filler (7) is made of flexible graphite-sandwiched stainless steel wires and is symmetrically arranged based on a second filler (8) as an axis, and the second filler (8) is flexible graphite.

4. The forged high pressure self-sealing stop valve of claim 1, wherein: knurling is conducted on the hand wheel (18), and the sealing ring (5) is a metal rubber sealing ring.

5. The forged high pressure self-sealing stop valve of claim 1, wherein: the plane bearings (17) are arranged in two groups.

6. The forged high pressure self-sealing stop valve of claim 1, wherein: the valve rod (3) is in rotary connection with the sealing nut (4), the packing pressing sleeve (12) and the packing pressing plate (13) respectively, and the valve rod (3) is in threaded connection with the valve rod nut (16).