CN215950437U - Seamless non-rising stem gate valve - Google Patents
Seamless non-rising stem gate valve Download PDFInfo
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- CN215950437U CN215950437U CN202120564661.2U CN202120564661U CN215950437U CN 215950437 U CN215950437 U CN 215950437U CN 202120564661 U CN202120564661 U CN 202120564661U CN 215950437 U CN215950437 U CN 215950437U
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Abstract
The utility model relates to the field of valves, in particular to a seamless non-rising stem gate valve. The utility model aims to solve the technical problem of providing a seamless hidden rod gate valve which can increase the whole sealing effect of the valve, prevent the leakage phenomenon, prolong the service life of the valve and still have good sealing effect after long-time opening and closing. A seamless hidden rod gate valve comprises a valve body, a valve cover, a rubber sealing gasket, a top cover, a valve rod fixing block, a shaft sleeve, a valve rod, a hand wheel, a valve rod nut, a sealing seat, a wedge-shaped gate plate, a locking pin, sealing packing, a sealing ring and a dustproof cover. The utility model achieves the effects of increasing the integral sealing effect of the valve, preventing the leakage phenomenon, prolonging the service life of the valve and having good sealing effect after long-time opening and closing.
Description
Technical Field
The utility model relates to the field of valves, in particular to a seamless non-rising stem gate valve.
Background
The gate valve is used as a cut-off valve for connecting or cutting off a medium in a pipeline, is an indispensable control device in a fluid pipeline, and is widely applied to oil, gas and water pipelines of departments of petroleum, chemical engineering, metallurgy, electric power, water conservancy, urban construction, fire fighting and the like as an opening and closing device for connecting or cutting off the medium in the pipeline.
The gate plate of the gate valve moves linearly along with the valve rod, and is called a lifting rod gate valve and a rising rod gate valve. Some gate valve stem nuts establish on the flashboard, the hand wheel rotation drives the valve rod and rotates, and make the flashboard promote, this kind of valve is called rotary rod gate valve or called dark pole gate valve, the gate valve generally all is that relative motion is done with the disk seat to the flashboard, and flashboard and disk seat require sealed but also require relative motion promptly, long-time flashboard and disk seat will wear and tear each other, make the leakproofness of gate valve descend, so that the phenomenon of seepage appears, especially the gate valve life that needs often switching is shorter relatively, the whole sealed effect of valve also needs the reinforcing consequently to need urgently to develop one kind and can increase the whole sealed effect of valve simultaneously, the seepage phenomenon prevents to appear, increase valve life, still there is the seamless dark pole gate valve of good sealed effect after opening and shutting for a long time.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects that the sealing performance of a gate valve is reduced due to the mutual abrasion of a frequently opened and closed gate plate and a close seat, so that the leakage phenomenon occurs, particularly the service life of the gate valve which needs to be opened and closed frequently is relatively short, and the overall sealing effect of the valve is poor.
The utility model is achieved by the following specific technical means:
a seamless hidden rod gate valve comprises a valve body, a valve cover, a rubber sealing gasket, a top cover, a valve rod fixing block, a shaft sleeve, a valve rod, a hand wheel, a valve rod nut, a sealing seat, a wedge-shaped gate plate, a locking pin, sealing packing and a sealing ring; a water through hole is formed in the center of the valve body, flanges connected with a pipeline are arranged at two ends of the valve body, a protruding platform is arranged at the upper end of the valve body, and a cavity connected with the water through hole is formed in the protruding platform; the center of the upper end of the valve cover is provided with a shaft hole, and the lower end of the valve cover is provided with a cavity; the valve cover is positioned at the upper end of the valve body and is fixedly connected with the valve body protruding platform through a bolt; a rubber sealing gasket is arranged at the joint of the valve body and the valve cover; the top cover is positioned above the valve cover and is fixedly connected with the valve cover through a bolt, and the top cover is provided with a shaft hole communicated with the shaft hole of the valve cover; the valve rod fixing block is positioned in the top cover shaft hole and fixedly connected with the top cover; the shaft sleeve is fixed in a shaft hole arranged at the upper end of the valve cover; the upper end of the valve rod is positioned in the shaft holes formed in the top cover and the valve cover, the valve rod is rotatably fixed in the shaft holes through the valve rod fixing block and the shaft sleeve, the top cover extends out of the upper end of the valve rod, and the lower end of the valve rod penetrates through the cavity and extends to the upper end of the water through hole; the hand wheel is positioned above the top cover and is fixedly connected with the valve rod through a bolt; the lower end of the valve rod is provided with threads, and the valve rod nut is fixed at the lower end of the valve rod through the threads; the sealing seats are arranged in the water through holes of the valve body and are positioned at the left side and the right side of the wedge-shaped flashboard; a through hole is formed in the center of the wedge-shaped flashboard, and a thread is arranged at the front section of the through hole; the wedge-shaped flashboard is positioned in a cavity arranged in the valve body and is fixedly connected with the valve rod nut through threads, and a locking pin is arranged at the connection part; the sealing filler is arranged in a shaft hole at the upper end of the valve cover and is positioned above the shaft sleeve; the sealing ring is provided with a plurality of sealing rings which are respectively positioned at the joint of the valve cover and the top cover and the joint of the valve rod and the top cover.
Furthermore, the device also comprises a dustproof cover; the dustproof cover is positioned at the joint of the valve rod at the upper end of the top cover and the top cover.
Furthermore, a groove is formed in a water through hole formed in the valve body.
Further, the valve rod is made of stainless steel, and an anti-separation step is arranged at the lower end of the joint of the valve rod and the valve body shaft hole.
Furthermore, both sides of the wedge-shaped flashboard are sealing surfaces, one side of the sealing seat, which is in contact with the wedge-shaped flashboard, is a sealing surface, the precision requirement of the sealing surface of the sealing seat is high, and the two sealing surfaces, which are in contact with the wedge-shaped flashboard, of the sealing seat form a wedge shape.
Further, the sealing surface of the wedge-shaped flashboard is provided with an elastic rubber layer.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model achieves the effects of increasing the overall sealing effect of the valve, preventing the leakage phenomenon and prolonging the service life of the valve, and has good sealing effect after long-time opening and closing, the sealing surface of the wedge-shaped flashboard is coated with the elastic rubber layer, and the elastic rubber layer is extruded when the wedge-shaped flashboard is contacted with the sealing seat, so that the elastic rubber layer is deformed and fully contacted with the sealing surface, thereby achieving the effect of improving the sealing property; the two sealing surfaces of the sealing seat, which are contacted with the wedge-shaped flashboard, form a wedge shape, so that the sealing surface of the wedge-shaped flashboard and the sealing surface of the sealing seat can be tightly attached to each other, a good sealing effect is achieved, and meanwhile, after the sealing surface is worn after long-time use, the sealing position of the sealing surface of the wedge-shaped flashboard can be automatically adjusted, so that the sealing effect cannot be weakened, and the effect of prolonging the service life of the wedge-shaped flashboard is achieved; a groove is arranged in the water through hole of the valve body, so that the sealing surface of the wedge-shaped flashboard and the sealing surface of the sealing seat can be tightly attached, and a good sealing effect is achieved; the valve rod on the top cover and the top cover joint are also provided with a dustproof cover, so that the effect of preventing dust from entering to influence the sealing performance of the valve is achieved.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic front view of the present invention.
Fig. 3 is a schematic view of the full-section structure of the present invention.
Fig. 4 is a partially enlarged structural diagram of the present invention.
The labels in the figures are: 1-valve body, 2-valve cover, 3-rubber sealing gasket, 4-top cover, 5-valve rod fixing block, 6-shaft sleeve, 7-valve rod, 8-hand wheel, 9-valve rod nut, 10-seal, 11-wedge-shaped gate plate, 12-locking pin, 13-sealing filler, 14-sealing ring and 15-dustproof cover.
Detailed Description
The utility model is further described below with reference to the accompanying drawings:
examples
A seamless hidden rod gate valve is shown in figures 1-4 and comprises a valve body 1, a valve cover 2, a rubber sealing gasket 3, a top cover 4, a valve rod fixing block 5, a shaft sleeve 6, a valve rod 7, a hand wheel 8, a valve rod nut 9, a sealing seat 10, a wedge-shaped gate plate 11, a locking pin 12, a sealing filler 13 and a sealing ring 14; a water through hole is formed in the center of the valve body 1, flanges connected with a pipeline are arranged at two ends of the valve body, a protruding platform is arranged at the upper end of the valve body, and a cavity connected with the water through hole is formed in the protruding platform; the center of the upper end of the valve cover 2 is provided with a shaft hole, and the lower end is provided with a cavity; the valve cover 2 is positioned at the upper end of the valve body 1 and is fixedly connected with a protruding platform of the valve body 1 through a bolt; a rubber sealing gasket 3 is arranged at the joint of the valve body 1 and the valve cover 2; the top cover 4 is positioned above the valve cover 2 and is fixedly connected with the valve cover 2 through bolts, and the top cover 4 is provided with a shaft hole communicated with the shaft hole arranged on the valve cover 2; the valve rod fixing block 5 is positioned in the shaft hole of the top cover 4 and is fixedly connected with the top cover 4; the shaft sleeve 6 is fixed in a shaft hole arranged at the upper end of the valve cover 2; the upper end of the valve rod 7 is positioned in the shaft holes formed in the top cover 4 and the valve cover 2, the valve rod fixing block 5 and the shaft sleeve 6 can be rotatably fixed in the shaft holes, the upper end of the valve rod fixing block extends out of the top cover 4, and the lower end of the valve rod 7 penetrates through the cavity and extends to the upper end of the water through hole; the hand wheel 8 is positioned above the top cover 4 and is fixedly connected with the valve rod 7 through a bolt; the lower end of the valve rod 7 is provided with threads, and the valve rod nut 9 is fixed at the lower end of the valve rod 7 through the threads; the sealing seats 10 are arranged in the water through holes of the valve body 1 and are positioned at the left side and the right side of the wedge-shaped flashboard 11; a through hole is formed in the center of the wedge-shaped flashboard 11, and a thread is arranged at the front section of the through hole; the wedge-shaped flashboard 11 is positioned in a cavity arranged in the valve body 1 and is fixedly connected with the valve rod nut 9 through threads, and a locking pin 12 is arranged at the connection part; the sealing packing 13 is arranged in a shaft hole at the upper end of the valve cover 2 and is positioned above the shaft sleeve 6; the sealing rings 14 are respectively arranged at the joint of the valve cover 2 and the top cover 4 and the joint of the valve rod 7 and the top cover 4.
The high-sealing elastic seat seal gate valve also comprises a dustproof cover 15; the dust cap 15 is positioned at the joint of the valve rod 7 and the top cover 4 at the upper end of the top cover 4.
And a groove is formed in a water through hole formed in the valve body 1.
The valve rod 7 is made of stainless steel, and the lower end of the connection part of the valve rod 7 and the shaft hole of the valve body 1 is provided with an anti-separation step.
Two side surfaces of the wedge-shaped gate plate 11 are sealing surfaces, one side, in contact with the wedge-shaped gate plate 11, of the sealing seat 10 is a sealing surface, the precision requirement of the sealing surface of the sealing seat 10 is high, and the two sealing surfaces, in contact with the wedge-shaped gate plate 11, of the sealing seat 10 are wedge-shaped.
The sealing surface of the wedge-shaped flashboard 11 is provided with an elastic rubber layer.
The working principle is as follows: the gate valve is fixed between two pipelines through flanges at two ends of a valve body 1, a hand wheel 8 is rotated to drive a valve rod 7 to rotate, the valve rod 7 rotates to drive a valve rod nut 9 to move up and down so as to drive a wedge-shaped gate plate 11 to move up and down, the surfaces of two sides of the wedge-shaped gate plate 11 are in surface contact with a sealing seat 10 to block water flow, an elastic valve seat is controlled by the rotating hand wheel 8 to move up and down to control opening and closing of a water through hole so as to control circulation and blocking of the water flow, elastic rubber layers are arranged on sealing surfaces at two sides of the wedge-shaped gate plate 11, and the elastic rubber layers are extruded when the sealing surfaces at two sides of the wedge-shaped gate plate 11 are in contact with the sealing surface of the sealing seat 10, so that the effect of sealing and leakage prevention are enhanced; when the limbers is opened, a part of water flow flows into a cavity formed by the valve body 1 and the valve cover 2, a rubber sealing gasket 3 is arranged at the joint of the valve body 1 and the valve cover 2, leakage of the water flow in the cavity from the joint of the valve body 1 and the valve cover 2 is prevented, sealing filler 13 is arranged in a shaft hole at the upper end of the valve cover 2, sealing rings 14 are further arranged at the joint of the valve cover 2 and the top cover 4 and the joint of the valve rod 7 and the top cover 4, the valve is highly sealed through multiple sealing to prevent water flow leakage, and meanwhile, a locking pin 12 is arranged at the joint of the wedge-shaped gate plate 11 and the valve rod nut 9 to prevent the wedge-shaped gate plate 11 and the valve rod nut 9 from being separated to cause valve failure.
Wherein, also include the dust cover 15; the dustproof cover 15 is positioned at the joint of the valve rod 7 at the upper end of the top cover 4 and the top cover 4; the effect of preventing dust from entering and influencing the tightness of the valve is achieved.
Wherein, a groove is arranged in the water through hole of the valve body 1; during sealing, the lower end of the wedge-shaped flashboard 11 extends into the groove, so that the sealing surface of the wedge-shaped flashboard 11 and the sealing surface of the sealing seat 10 can be tightly attached to each other, a good sealing effect is achieved, and meanwhile, when the sealing surface of the wedge-shaped flashboard 11 is ground, the wedge-shaped flashboard 11 descends to adjust the position of the sealing surface, so that the sealing effect of the sealing surface cannot be weakened.
Two side surfaces of the wedge-shaped gate plate 11 are sealing surfaces, one side of the sealing seat 10, which is in contact with the wedge-shaped gate plate 11, is a sealing surface, the precision requirement of the sealing surface of the sealing seat 10 is high, and the two sealing surfaces of the sealing seat 10, which are in contact with the wedge-shaped gate plate 11, are wedge-shaped; make the sealed face of wedge flashboard 11 and the sealed face of seal receptacle 10 can closely laminate, reach good sealed effect, use sealed face wearing and tearing back for a long time simultaneously, the sealed face of wedge flashboard 11 can be adjusted sealed position by oneself and make sealed effect can not weaken, reaches the effect that increases wedge flashboard 11 life.
Wherein, the sealing surface of the wedge-shaped flashboard 11 is provided with an elastic rubber layer; when the wedge-shaped flashboard 11 is contacted with the sealing seat 10, the elastic rubber layer is extruded, so that the elastic rubber layer is deformed and is fully contacted with the sealing surface, and high sealing performance is achieved.
Although the present disclosure has been described in detail with reference to the exemplary embodiments, the present disclosure is not limited thereto, and it will be apparent to those skilled in the art that various modifications and changes can be made thereto without departing from the scope of the present disclosure.
Claims (6)
1. A seamless hidden rod gate valve is characterized by comprising a valve body (1), a valve cover (2), a rubber sealing gasket (3), a top cover (4), a valve rod fixing block (5), a shaft sleeve (6), a valve rod (7), a hand wheel (8), a valve rod nut (9), a sealing seat (10), a wedge-shaped gate plate (11), a locking pin (12), sealing filler (13) and a sealing ring (14); a water through hole is formed in the center of the valve body (1), flanges connected with a pipeline are arranged at two ends of the valve body, a protruding platform is arranged at the upper end of the valve body, and a cavity connected with the water through hole is formed in the protruding platform; the center of the upper end of the valve cover (2) is provided with a shaft hole, and the lower end is provided with a cavity; the valve cover (2) is positioned at the upper end of the valve body (1) and is fixedly connected with a protruding platform of the valve body (1) through a bolt; a rubber sealing gasket (3) is arranged at the joint of the valve body (1) and the valve cover (2); the top cover (4) is positioned above the valve cover (2) and is fixedly connected with the valve cover (2) through bolts, and the top cover (4) is provided with a shaft hole communicated with the shaft hole arranged on the valve cover (2); the valve rod fixing block (5) is positioned in the shaft hole of the top cover (4) and is fixedly connected with the top cover (4); the shaft sleeve (6) is fixed in a shaft hole arranged at the upper end of the valve cover (2); the upper end of the valve rod (7) is positioned in the shaft holes formed in the top cover (4) and the valve cover (2), the valve rod is rotatably fixed in the shaft holes through the valve rod fixing block (5) and the shaft sleeve (6), the top cover (4) extends out of the upper end of the valve rod, and the lower end of the valve rod (7) penetrates through the cavity and extends to the upper end of the water through hole; the hand wheel (8) is positioned above the top cover (4) and is fixedly connected with the valve rod (7) through a bolt; the lower end of the valve rod (7) is provided with threads, and a valve rod nut (9) is fixed at the lower end of the valve rod (7) through the threads; the sealing seats (10) are arranged in the water through holes of the valve body (1) and are positioned at the left side and the right side of the wedge-shaped flashboard (11); a through hole is formed in the center of the wedge-shaped flashboard (11), and a thread is arranged at the front section of the through hole; the wedge-shaped flashboard (11) is positioned in a cavity arranged in the valve body (1) and is fixedly connected with the valve rod nut (9) through threads, and a locking pin (12) is arranged at the connection part; the sealing filler (13) is arranged in a shaft hole at the upper end of the valve cover (2) and is positioned above the shaft sleeve (6); the sealing rings (14) are provided with a plurality of sealing rings which are respectively positioned at the joint of the valve cover (2) and the top cover (4) and the joint of the valve rod (7) and the top cover (4).
2. A seamless dark-stem gate valve according to claim 1, further comprising a dust cap (15); the dust cap (15) is positioned at the joint of the valve rod (7) at the upper end of the top cover (4) and the top cover (4).
3. A seamless non-rising stem gate valve according to claim 1, wherein the through hole of the valve body (1) is provided with a groove.
4. A seamless non-rising stem gate valve according to claim 1, wherein the valve rod (7) is made of stainless steel, and the lower end of the connection between the valve rod (7) and the shaft hole of the valve body (1) is provided with an anti-falling step.
5. A seamless hidden-rod gate valve according to claim 1, wherein two sides of the wedge-shaped gate plate (11) are sealing surfaces, one side of the sealing seat (10) contacting with the wedge-shaped gate plate (11) is a sealing surface, the sealing surface precision requirement of the sealing seat (10) is high, and the two sealing surfaces of the sealing seat (10) contacting with the wedge-shaped gate plate (11) are wedge-shaped.
6. A seamless dark-bar gate valve according to claim 1, wherein the sealing surface of the wedge segments (11) is provided with a resilient rubber layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120564661.2U CN215950437U (en) | 2021-03-19 | 2021-03-19 | Seamless non-rising stem gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120564661.2U CN215950437U (en) | 2021-03-19 | 2021-03-19 | Seamless non-rising stem gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215950437U true CN215950437U (en) | 2022-03-04 |
Family
ID=80566897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120564661.2U Active CN215950437U (en) | 2021-03-19 | 2021-03-19 | Seamless non-rising stem gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215950437U (en) |
-
2021
- 2021-03-19 CN CN202120564661.2U patent/CN215950437U/en active Active
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