CN213479245U - Forged steel gate valve - Google Patents
Forged steel gate valve Download PDFInfo
- Publication number
- CN213479245U CN213479245U CN202021009755.5U CN202021009755U CN213479245U CN 213479245 U CN213479245 U CN 213479245U CN 202021009755 U CN202021009755 U CN 202021009755U CN 213479245 U CN213479245 U CN 213479245U
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- Prior art keywords
- valve
- valve body
- packing
- fixedly arranged
- valve rod
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 28
- 239000010959 steel Substances 0.000 title claims abstract description 28
- 239000000945 filler Substances 0.000 claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- 239000007770 graphite material Substances 0.000 claims description 2
- 229910001220 stainless steel Inorganic materials 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 7
- 230000002708 enhancing Effects 0.000 abstract description 2
- 238000009991 scouring Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000003014 reinforcing Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model relates to the technical field of forged steel gate valves, in particular to a forged steel gate valve, which comprises a valve body, wherein a left connecting flange is welded on a left valve port of the valve body, a right connecting flange is welded on a right valve port of the valve body, a valve seat is fixedly arranged inside the valve body, a flashboard is correspondingly arranged on the valve seat and positioned inside the valve body, a valve rod is fixedly arranged on the end surface of the flashboard, the valve rod sequentially penetrates through a valve cover, a filler pressing sleeve, a filler pressing plate, a valve rod nut and a hand wheel from bottom to top, the valve body is connected with a valve cover through bolts, a middle gasket is fixedly arranged at the joint of the valve body and the connecting valve cover, a first filler is filled at the contact part of the valve rod and the valve cover, the utility model divides an inner hole of the valve body into two sections through design, the diameter is different by, thereby enhancing the sealing performance and further ensuring that the valve seat is very firm under the conditions of medium scouring, thermal expansion and cold contraction.
Description
Technical Field
The utility model relates to a forged steel gate valve technical field specifically is a forged steel gate valve.
Background
The opening and closing part of the forged steel gate valve is a gate plate, the movement direction of the gate plate is vertical to the fluid direction, the forged steel gate valve can only be fully opened and fully closed and cannot be adjusted and throttled, and the forged steel gate valve has the advantages of small fluid resistance; the external force required by opening and closing is small; the flow direction of the medium is not limited; when the valve is fully opened, the erosion of the sealing surface by the working medium is smaller than that of the stop valve; the valve body has the advantages that the valve body is simple in structure and good in casting manufacturability, but the existing advantages and disadvantages also exist that an inner hole of the valve body at the position of the existing valve seat is a straight hole, so that the valve seat is tightly attached and sealed after being expanded, the sealing performance is poor, and the valve body is easy to fall off.
To sum up, the utility model provides a forged steel gate valve improves the problem that exists at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a forged steel gate valve to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a forged steel gate valve comprises a valve body, wherein a left connecting flange is welded on a left valve port of the valve body, a right connecting flange is welded on a right valve port of the valve body, a valve seat is fixedly arranged inside the valve body, a flashboard is correspondingly arranged on the valve seat and positioned inside the valve body, a valve rod is fixedly arranged on the end surface of the flashboard, the valve rod sequentially penetrates through a valve cover, a packing pressing sleeve, a packing pressing plate, a valve rod nut and a hand wheel from bottom to top, the valve body is connected with the valve cover through bolts, a middle gasket is fixedly arranged at the joint of the valve body and the connecting valve cover, a first packing is filled at the contact position of the valve rod and the valve cover, a second packing is fixedly arranged above the first packing and positioned inside the valve cover, a packing pressing sleeve is arranged at the end part of the valve cover and corresponds to the first packing, a packing pressing plate is correspondingly arranged on the, one end of the swing bolt is fixedly connected to the pin, the pin is fixedly arranged on the valve cover, the other end of the swing bolt penetrates through the packing pressing plate and extends to the position above the packing pressing plate, a swing nut is in threaded connection with the other end of the swing bolt, the outer wall of the valve rod nut is sleeved on the hand wheel, a gasket is fixedly arranged at the connecting position of the valve rod nut and the hand wheel, and the end of the valve rod nut penetrates through the hand wheel and extends to the position above the hand wheel, and a splicing cap is in threaded connection.
Preferably, the left connecting flange and the right connecting flange are the same in size and structure, the middle channel gasket is made of 304-clamp flexible graphite, and the handwheel is subjected to knurling treatment.
Preferably, the first filler is flexible graphite-sandwiched stainless steel wires and is symmetrically arranged inside the valve cover based on a second filler as an axis, and the second filler is flexible graphite.
Preferably, the inner hole of the valve body is divided into two sections, the diameter difference is 1MM, an inclination of 30 degrees is added, and the two groups of gaskets are made of 304+ graphite materials.
Preferably, the valve rod is rotatably connected with the valve cover, the packing pressing sleeve and the packing pressing plate respectively, and the valve rod is in threaded connection with the valve rod nut.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses in, divide into two sections through the valve body hole with the forged steel gate valve, the diameter differs 1MM, increases the inclination of a 30 degrees, makes not only hug closely behind the disk seat inflation, hangs upside down moreover to reinforcing sealing performance more makes the disk seat also very firm forged steel gate valve under the medium erodees and expend with heat and contract with cold condition, thereby has avoided because the valve body hole at original disk seat position is straight hole, hugs closely and seals behind the disk seat inflation, and sealing performance is not good, the problem that easily drops.
2. The utility model discloses in, compare structural design more rationally with original forged steel gate valve through the forged steel gate valve structure in the this scheme of design, 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 overall 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 seat, 3-gate plate, 4-valve rod, 5-middle gasket, 6-valve cover, 7-first filler, 8-second filler, 9-pin, 10-filler pressing sleeve, 11-swing bolt, 12-filler pressing plate, 13-swing nut, 14-gasket, 15-valve rod nut, 16-hand wheel, 17-splicing cap, 18-bolt, 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 steel gate valve comprises a valve body 1, a left connecting flange 101 is welded on a left valve port of the valve body 1, a right connecting flange 102 is welded on a right valve port of the valve body 1, a valve seat 2 is fixedly arranged inside the valve body 1, a gate plate 3 is correspondingly arranged on the valve seat 2 and inside the valve body 1, a valve rod 4 is fixedly arranged on the end surface of the gate plate 3, the valve rod 4 sequentially penetrates through a valve cover 6, a packing pressing sleeve 10, a packing pressing plate 12, a valve rod nut 15 and a hand wheel 16 from bottom to top, the valve body 1 is connected with the valve cover 6 through a bolt 18, a middle gasket 5 is fixedly arranged at the joint of the valve body 1 and the connecting valve cover 6, a first packing 7 is filled at the contact part of the valve rod 4 and the valve cover 6, a second packing 8 is fixedly arranged above the first packing 7 and inside the valve cover 6, a packing pressing sleeve 10 is arranged at the end part of the valve cover 6, the packing pressing plate 12 is in threaded connection with a movable joint bolt 11, one end of the movable joint bolt 11 is fixedly connected to a pin 9, the pin 9 is fixedly arranged on the valve cover 6, the other end of the movable joint bolt 11 penetrates through the packing pressing plate 12 and extends to the position above the packing pressing plate 12, a movable joint nut 13 is in threaded connection with the other end of the movable joint bolt 11, the outer wall of a valve rod nut 15 is sleeved on a hand wheel 16, a gasket 14 is fixedly arranged at the connecting position of the valve rod nut 15 and the hand wheel 16, the end of the valve rod nut 15 penetrates through the hand wheel 16 and extends to the position above the hand wheel 16, a split nut 17 is in threaded connection, an inner hole of the valve body 1 is divided into two sections, the diameter is different by 1MM, an inclination of 30 degrees is added, the valve seat 2 is not only.
The utility model discloses work flow: the inner hole of the valve body 1 of the forged steel gate valve is divided into two sections by turning, under the action of ensuring that the diameter difference is 1MM and adding a slope of 30 degrees, the valve seat 2, the flashboard 3, the valve rod 4, the middle gasket 5, the valve cover 6, the first filler 7, the second filler 8, the pin 9 and the 10 filler pressing sleeve, the eyelet bolt 11, the filler pressing plate 12, the eyelet nut 13, the gasket 14, the valve rod nut 15, the hand wheel 16, the split cap 17 and the bolt 18 are sequentially assembled in the valve body 1 after processing according to the assembling process of the forged steel gate valve, the inner hole of the valve body 1 of the forged steel gate valve is divided into two sections by adding a slope of 30 degrees after the diameter difference is 1MM, the valve seat 2 is not only clung to but also hangs upside down after expansion, thereby enhancing the sealing performance, and further enabling the valve seat 2 to be firmly forged steel gate valve under the conditions of medium scouring and thermal expansion and cold contraction, thereby avoiding the original straight hole of, hug closely and seal after the disk seat inflation, sealing performance is not good, the problem that easily drops, consequently the forged steel gate valve structure in this scheme compares structural design more reasonable with original forged steel gate valve, and the result of use is more obvious and the operation is simpler, consequently more suits to use widely on a large scale.
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 (5)
1. The utility model provides a forged steel gate valve, includes valve body (1), its characterized in that: a left connecting flange (101) is welded on a left valve port of the valve body (1), a right connecting flange (102) is welded on a right valve port of the valve body (1), a valve seat (2) is fixedly arranged inside the valve body (1), a gate plate (3) is correspondingly arranged on the valve seat (2) and positioned inside the valve body (1), a valve rod (4) is fixedly arranged on the end surface of the gate plate (3), the valve rod (4) sequentially penetrates through a valve cover (6), a packing pressing sleeve (10), a packing pressing plate (12), a valve rod nut (15) and a hand wheel (16) from bottom to top, the valve body (1) is connected with the valve cover (6) through a bolt (18), a middle gasket (5) is fixedly arranged at the joint of the valve body (1) and the connecting valve cover (6), a first packing (7) is filled at the contact position of the valve rod (4) and the valve cover (6), a second packing (8) is fixedly arranged above the first packing (7) and positioned inside the, a packing pressing sleeve (10) is arranged at the end part of the valve cover (6) and corresponds to the first packing (7), a packing pressure plate (12) is correspondingly arranged on the packing pressure sleeve (10), a movable joint bolt (11) is connected with the packing pressure plate (12) in a threaded manner, one end part of the swing bolt (11) is fixedly connected to a pin (9), the pin (9) is fixedly arranged on the valve cover (6), the other end of the swing bolt (11) penetrates through the packing pressing plate (12) and extends to the upper part of the packing pressing plate (12) to be connected with a swing nut (13) in a threaded manner, the outer wall of the valve rod nut (15) is sleeved on the hand wheel (16), a gasket (14) is fixedly arranged at the joint of the valve rod nut (15) and the hand wheel (16), the end part of the valve rod nut (15) penetrates through the hand wheel (16) and extends to the upper part of the hand wheel (16) to be in threaded connection with a split cap (17).
2. A forged steel gate valve according to claim 1, wherein: the left connecting flange (101) and the right connecting flange (102) are identical in size and structure, the middle-channel gasket (5) is made of 304-clamp flexible graphite, and the handwheel (16) is knurled.
3. A forged steel gate valve according to claim 1, wherein: the first filler (7) is flexible graphite-sandwiched stainless steel wires and is symmetrically arranged inside the valve cover (6) based on a second filler (8) as an axis, and the second filler (8) is flexible graphite.
4. A forged steel gate valve according to claim 1, wherein: the inner hole of the valve body (1) is divided into two sections, the diameter difference is 1MM, an inclination of 30 degrees is added, and the gaskets (14) are arranged in two groups and are made of 304+ graphite materials.
5. A forged steel gate valve according to claim 1, wherein: the valve rod (4) is in rotary connection with the valve cover (6), the packing pressing sleeve (10) and the packing pressing plate (12), and the valve rod (4) is in threaded connection with the valve rod nut (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021009755.5U CN213479245U (en) | 2020-05-28 | 2020-05-28 | Forged steel gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021009755.5U CN213479245U (en) | 2020-05-28 | 2020-05-28 | Forged steel gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213479245U true CN213479245U (en) | 2021-06-18 |
Family
ID=76391327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021009755.5U Active CN213479245U (en) | 2020-05-28 | 2020-05-28 | Forged steel gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213479245U (en) |
-
2020
- 2020-05-28 CN CN202021009755.5U patent/CN213479245U/en active Active
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