CN212203179U

CN212203179U - Forged steel gate valve

Info

Publication number: CN212203179U
Application number: CN202020831052.4U
Authority: CN
Inventors: 苏显勇
Original assignee: Zhejiang Kezheng Valve Co ltd
Current assignee: Zhejiang Kezheng Valve Co ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2020-12-22
Anticipated expiration: 2030-05-18

Abstract

The utility model relates to a forged steel gate valve, including valve body, disk seat, valve gap, valve rod and valve plate, the valve gap setting is in the valve body top, and the one end setting of valve rod is in the valve body, and the other end of valve rod runs through and stretches out the valve gap, is equipped with the filler sealing mechanism between valve rod and the valve gap, but the valve rod oscilaltion setting is equipped with the actuating mechanism who is used for driving the valve rod lift on the valve gap, be equipped with the connecting seat between valve gap and the valve body, the lower extreme of connecting seat and the upper end fixed connection of valve body, valve body and the sealed cooperation of connecting seat, the connecting seat is equipped with the shoulder hole that reduces in proper order from top to bottom aperture, and the shoulder hole includes. Through adopting above-mentioned scheme, a forged steel gate valve is provided, and it is when the user requires to tailor nonstandard size, only needs the size of adjustment connecting seat and valve rod, can accomplish being connected of valve body and valve gap, has reduced manufacturing cost, has improved machining efficiency.

Description

Forged steel gate valve

Technical Field

The utility model belongs to the technical field of the valve technique and specifically relates to a forged steel gate valve.

Background

There are many kinds of valves on the market, and a gate valve is a common valve which can be used for cutting off or connecting a medium in a pipeline.

General gate valve includes valve body, valve gap, valve rod and valve plate, is equipped with sealing filler between valve gap and the valve rod for sealed to the medium, valve body and the direct fixed connection of valve gap, so if the user requires to tailor non-standard size, need set up the mould of valve body, valve gap and valve rod in addition, increased manufacturing cost, reduced machining efficiency.

Disclosure of Invention

The utility model overcomes prior art's is not enough, provides a forged steel gate valve, and it only needs the size of adjustment connecting seat and valve rod when the user requires to tailor nonstandard size, can accomplish being connected of valve body and valve gap, has reduced manufacturing cost, has improved machining efficiency.

In order to realize the purpose, the utility model discloses a technical scheme is: a forged steel gate valve comprises a valve body, a valve seat, a valve cover, a valve rod and a valve plate, wherein an inlet and an outlet are formed in the valve body, a channel for communicating the inlet and the outlet is formed in the valve seat, the valve plate is arranged at the lower end of the valve rod, the valve plate is matched with the valve seat to realize the communication or disconnection of the channel, the valve cover is arranged above the valve body, one end of the valve rod is arranged in the valve body, the other end of the valve rod penetrates through and extends out of the valve cover, a packing sealing mechanism is arranged between the valve rod and the valve cover, the valve rod can be arranged in, the connecting seat is arranged between the valve cover and the valve body, the lower end of the connecting seat is fixedly connected with the upper end of the valve body, the valve body is in sealing fit with the connecting seat, the connecting seat is provided with stepped holes, the diameters of the stepped holes are sequentially reduced from top to bottom, each stepped hole comprises an upper hole, a middle hole and a lower hole, the valve cover is in threaded connection with the upper holes, and the valve cover is in sealing fit with the connecting seat.

By adopting the scheme, the upper and lower position relations in the text are as follows: one side of valve gap is the top, and one side of valve body is the below, and the lower extreme of connecting seat passes through the structural connection of bolt and nut on the valve body, and the valve gap passes through the screw thread to be established soon on the connecting seat, and valve body and the sealed cooperation of connecting seat, valve gap and the sealed cooperation of connecting seat, the medium can not leak, and when the user required to tailor non-standard size, only need the size of adjustment connecting seat and valve rod, can accomplish being connected of valve body and valve gap, reduced manufacturing cost, improved machining efficiency.

The utility model discloses a further setting is: a sealing gasket is arranged between the connecting seat and the valve body, a pressing block extends from the lower end of the connecting seat, a first annular groove for the pressing block to be inserted is formed in the valve body, the sealing gasket is arranged in the first annular groove, and the pressing block can press the sealing gasket in the first annular groove.

By adopting the above scheme, seal gasket comprises steel wire and flexible graphite, and the seal gasket card is arranged in first ring channel, and the installation is stable, and the connecting seat passes through the bolt and the nut is fixed on the valve body, and the conflict piece of connecting seat inserts first ring channel and supports seal gasket and press on the bottom surface of first ring channel, can realize the sealing of connecting seat and valve body, simple structure, simple to operate.

The utility model discloses a further setting is: still be equipped with first sealing ring between connecting seat and the valve body, first sealing ring overcoat is in the briquetting, and the valve body is equipped with the second ring channel in the department that corresponds first sealing ring, and second ring channel is located the top of first ring channel, and the second ring channel is arranged in to first sealing ring, and the lower terminal surface of connecting seat can be located the second ring channel with first sealing ring pressure.

Through adopting above-mentioned scheme, first sealing ring comprises steel wire and flexible graphite, and first sealing ring overcoat is in the briquetting, and the installation is stable, and the connecting seat passes through the bolt and the nut is fixed on the valve body, and the lower terminal surface of connecting seat supports first sealing ring and presses on the bottom surface of second ring channel, can realize the sealed of connecting seat and valve body, simple structure, simple to operate.

The utility model discloses a further setting is: the lower extreme of valve gap is equipped with from tight seat, from tight seat run through the valve gap and can slide from top to bottom, from tight seat's lower extreme is equipped with the cone, the cone crescent from top to bottom, the cone is located mesopore department, be equipped with the second sealing ring between cone and the mesopore, the up end of second sealing ring pastes with the lower terminal surface of valve gap mutually, the lateral surface of second sealing ring pastes with the inner wall of mesopore mutually, the lower terminal surface of second sealing ring pastes with the lateral surface of cone mutually, stretch out the valve gap and have connect lifting nut soon from tight seat's upper end.

Through adopting above-mentioned scheme, the second sealing ring comprises steel wire and flexible graphite, and the upper end of second sealing ring is spacing by the valve gap, and lifting nut has certain pretightning force, can bear certain medium pressure, surpasss this pressure value when medium pressure, and the tight seat of oneself makes progress the small range under the effect of medium pressure and removes, and the cone extrudees the second sealing ring, and the second sealing ring can form effectual sealed effect, especially under highly compressed operating mode, and the valve gap is better with the sealed effect of connecting seat.

The utility model discloses a further setting is: the packing sealing mechanism comprises packing, a packing pressing sleeve, a packing gland, a locking bolt and a locking nut, a packing cavity is arranged on the self-tightening seat, the packing is arranged in the packing cavity, the packing pressing sleeve and the packing gland are respectively sleeved on the valve rod in an externally sleeved mode, the packing pressing sleeve is pressed on the packing, the packing pressing cover is pressed on the packing pressing sleeve, the lower end of the locking bolt is movably arranged on the valve cover, the upper end of the locking bolt penetrates through the packing gland and is screwed with the locking nut, the locking nut is screwed, and the packing is pressed by the locking nut downwards pressing the packing gland.

By adopting the above scheme, the filler plays a sealing role, and the filler can effectively plug the medium without leakage.

The utility model discloses a further setting is: the driving mechanism comprises a valve rod nut and a hand wheel, the valve rod nut is rotatably arranged on the valve cover, the valve rod penetrates through the valve rod nut, the valve rod nut is in threaded fit with the valve rod, and the hand wheel is connected to the valve rod nut in a linkage mode.

Through adopting above-mentioned scheme, valve-stem nut can only rotate and can not reciprocate, and the valve rod can only reciprocate and can not rotate, and the hand wheel rotation drives valve-stem nut and rotates, and valve-stem nut drives the valve rod through the screw thread and reciprocates, simple structure, convenient operation.

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

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

fig. 3 is an enlarged schematic view of a portion B of fig. 1.

Detailed Description

As shown in fig. 1-3, a forged steel gate valve comprises a valve body 1, a valve seat 2, a valve cover 3, a valve rod 4 and a valve plate 5, wherein the valve body 1 is provided with an inlet 11 and an outlet 12, the valve seat 2 is provided with a channel 13 for communicating the inlet 11 with the outlet 12, the valve plate 5 is arranged at the lower end of the valve rod 4, the valve plate 5 is matched with the valve seat 2 to realize the communication or disconnection of the channel 13, the valve cover 3 is arranged above the valve body 1, one end of the valve rod 4 is arranged in the valve body 1, the other end of the valve rod 4 penetrates through and extends out of the valve cover 3, a packing sealing mechanism is arranged between the valve rod 4 and the valve cover 3, the valve rod 4 can be vertically lifted, a driving mechanism for driving the valve rod 4 to be lifted is arranged on the valve cover 3, a connecting seat 6 is arranged between the valve cover 3 and the valve body 1, connecting seat 6 is equipped with the shoulder hole that from top to bottom aperture reduces in proper order, and the shoulder hole includes hole 61, mesopore 62 and lower hole 63, and valve gap 3 threaded connection is in last hole 61 department, and valve gap 3 and connecting seat 6 seal fit. The upper and lower position relations in the text are as follows: the valve cover 3 is disposed above and the valve body 1 is disposed below, but not limited to the position in practical use.

In this embodiment, a sealing gasket 71 is disposed between the connecting seat 6 and the valve body 1, the sealing gasket is composed of a steel wire and flexible graphite, the pressing block 64 extends from the lower end of the connecting seat 6, the first annular groove 14 into which the pressing block 64 is inserted is disposed on the valve body 1, the sealing gasket 71 is disposed in the first annular groove 14, and the pressing block 64 can press the sealing gasket 71 to the first annular groove 14.

In this embodiment, a first sealing ring 72 is further disposed between the connecting seat 6 and the valve body 1, the first sealing ring 72 is composed of a steel wire and flexible graphite, the first sealing ring 72 is sleeved on the abutting block 64, the valve body 1 is provided with a second annular groove 15 at a position corresponding to the first sealing ring 72, the second annular groove 15 is located above the first annular groove 14, the first sealing ring 72 is disposed in the second annular groove 15, and the lower end surface of the connecting seat 6 can press the first sealing ring 72 in the second annular groove 15.

In this embodiment, the lower end of the valve cap 3 is provided with a self-tightening seat 81, the self-tightening seat 81 penetrates through the valve cap 3 and can slide up and down, a cone 811 is integrally arranged at the lower end of the self-tightening seat 81, the cone 811 gradually increases from top to bottom, the cone 811 is located at the middle hole 62, a second sealing ring 73 is arranged between the cone 811 and the middle hole 62, the second sealing ring 73 is composed of a steel wire and flexible graphite, the upper end face of the second sealing ring 73 is attached to the lower end face of the valve cap 3, the outer side face of the second sealing ring 73 is attached to the inner wall of the middle hole 62, the lower end face of the second sealing ring 73 is attached to the outer side face of the cone 811, and the upper end of the self-.

In this embodiment, the packing sealing mechanism includes a packing 91, a packing pressing sleeve 92, a packing gland 93, a locking bolt 94 and a locking nut 95, a packing cavity 812 is provided on the self-tightening seat 81, the packing 91 is disposed in the packing cavity 812, the packing pressing sleeve 92 and the packing gland 93 are respectively sleeved on the valve rod 4, the packing pressing sleeve 92 is pressed on the packing 91, the packing gland 93 is pressed on the packing pressing sleeve 92, the lower end of the locking bolt 94 is movably disposed on the valve cover 3, the movable structure can be matched by a pin shaft and a cotter pin, the upper end of the locking bolt 94 passes through the packing gland 93 and is screwed with the locking nut 95, the locking nut 95 is screwed, and the packing gland 93 is pressed down by the locking nut 95 to compress the packing 91.

In this embodiment, the driving mechanism includes a stem nut 101 and a hand wheel 102, the stem nut 101 is rotatably disposed on the bonnet 3, the valve rod 4 is disposed through the stem nut 101, the stem nut 101 is in threaded fit with the valve rod 4, and the hand wheel 102 is linked to the stem nut 101.

The above embodiment is only one of the preferred embodiments of the present invention, and the general changes and substitutions performed by those skilled in the art within the technical scope of the present invention are included in the protection scope of the present invention.

Claims

1. The utility model provides a forged steel gate valve, includes valve body, disk seat, valve gap, valve rod and valve plate, be equipped with import and export on the valve body, be equipped with the passageway that is used for switching on import and export on the disk seat, the valve plate sets up the lower extreme at the valve rod, the switching on or the disconnection of passageway is realized with the disk seat cooperation to the valve plate, the valve gap setting is in the valve body top, the one end setting of valve rod is in the valve body, the other end of valve rod runs through and stretches out the valve gap, be equipped with filler sealing mechanism between valve rod and the valve gap, but the valve rod oscilaltion sets up, be: the connecting seat is arranged between the valve cover and the valve body, the lower end of the connecting seat is fixedly connected with the upper end of the valve body, the valve body is in sealing fit with the connecting seat, the connecting seat is provided with stepped holes, the diameters of the stepped holes are sequentially reduced from top to bottom, each stepped hole comprises an upper hole, a middle hole and a lower hole, the valve cover is in threaded connection with the upper holes, and the valve cover is in sealing fit with the connecting seat.

2. A forged steel gate valve according to claim 1, wherein: a sealing gasket is arranged between the connecting seat and the valve body, a pressing block extends from the lower end of the connecting seat, a first annular groove for the pressing block to be inserted is formed in the valve body, the sealing gasket is arranged in the first annular groove, and the pressing block can press the sealing gasket in the first annular groove.

3. A forged steel gate valve according to claim 2, wherein: still be equipped with first sealing ring between connecting seat and the valve body, first sealing ring overcoat is in the briquetting, and the valve body is equipped with the second ring channel in the department that corresponds first sealing ring, and second ring channel is located the top of first ring channel, and the second ring channel is arranged in to first sealing ring, and the lower terminal surface of connecting seat can be located the second ring channel with first sealing ring pressure.

4. A forged steel gate valve according to claim 1, 2 or 3, wherein: the lower extreme of valve gap is equipped with from tight seat, from tight seat run through the valve gap and can slide from top to bottom, from tight seat's lower extreme is equipped with the cone, the cone crescent from top to bottom, the cone is located mesopore department, be equipped with the second sealing ring between cone and the mesopore, the up end of second sealing ring pastes with the lower terminal surface of valve gap mutually, the lateral surface of second sealing ring pastes with the inner wall of mesopore mutually, the lower terminal surface of second sealing ring pastes with the lateral surface of cone mutually, stretch out the valve gap and select to have connect lifting nut soon from tight seat's upper end.

5. A forged steel gate valve according to claim 4, wherein: the packing sealing mechanism comprises packing, a packing pressing sleeve, a packing gland, a locking bolt and a locking nut, a packing cavity is arranged on the self-tightening seat, the packing is arranged in the packing cavity, the packing pressing sleeve and the packing gland are respectively sleeved on the valve rod in an externally sleeved mode, the packing pressing sleeve is pressed on the packing, the packing pressing cover is pressed on the packing pressing sleeve, the lower end of the locking bolt is movably arranged on the valve cover, the upper end of the locking bolt penetrates through the packing gland and is screwed with the locking nut, the locking nut is screwed, and the packing is pressed by the locking nut downwards pressing the packing gland.

6. A forged steel gate valve according to claim 1, 2 or 3, wherein: the driving mechanism comprises a valve rod nut and a hand wheel, the valve rod nut is rotatably arranged on the valve cover, the valve rod penetrates through the valve rod nut, the valve rod nut is in threaded fit with the valve rod, and the hand wheel is connected to the valve rod nut in a linkage mode.