CN214222057U - Duplex gate valve - Google Patents
Duplex gate valve Download PDFInfo
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- CN214222057U CN214222057U CN202022909450.6U CN202022909450U CN214222057U CN 214222057 U CN214222057 U CN 214222057U CN 202022909450 U CN202022909450 U CN 202022909450U CN 214222057 U CN214222057 U CN 214222057U
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Abstract
The utility model discloses a pair gate valve, include: a valve body; the valve body is provided with a water inlet, a water outlet and a communication hole for communicating the water inlet and the water outlet; the duplex gate valve comprises two gate valve assemblies for controlling the flow of the water inlet and the water outlet; the gate valve assembly includes: the valve comprises a valve seat, a valve rod, a valve cover and a flashboard; the valve seat is arranged in the valve body and is provided with a three-way groove; the valve cover is fixed to the upper end of the valve body and forms a valve cabin together with the valve body; the three through grooves are communicated with the valve cabin, the water inlet, the communicating hole and the water outlet; one end of the valve rod sequentially penetrates through the valve cover and the valve body and extends into the valve cabin; the shutter is connected to one end of the valve stem to be inserted into the three through-grooves to open or close the communication hole. The utility model discloses a pair gate valve's simple structure, the reliability is high, convenient to use.
Description
Technical Field
The utility model relates to a pair gate valve.
Background
The conventional gate valve for controlling the flow of a pipeline has a simple structure. When local parts of the gate valve are damaged, the gate valve cannot play a role in controlling the flow of the pipeline and needs to be maintained immediately. Therefore, the traditional gate valve is not high in reliability and not convenient to use.
SUMMERY OF THE UTILITY MODEL
The utility model provides a pair gate valve adopts following technical scheme:
a double gate valve comprising: a valve body; the valve body is provided with a water inlet, a water outlet and a communication hole for communicating the water inlet and the water outlet; the duplex gate valve comprises two gate valve assemblies for controlling the flow of the water inlet and the water outlet; the gate valve assembly includes: the valve comprises a valve seat, a valve rod, a valve cover and a flashboard; the valve seat is arranged in the valve body and is provided with a three-way groove; the valve cover is fixed to the upper end of the valve body and forms a valve cabin together with the valve body; the three through grooves are communicated with the valve cabin, the water inlet, the communicating hole and the water outlet; one end of the valve rod sequentially penetrates through the valve cover and the valve body and extends into the valve cabin; a shutter is connected to one end of the valve stem to be inserted into the three through grooves to open or close the communication hole; a filler cabin is formed on the wall of a through hole formed by the valve cover and used for the valve rod to pass through; the filler cabin is internally provided with filler surrounding the valve rod and used for sealing a gap between the valve rod and the valve cover; a gland for pressing and loading packing is arranged above the packing cabin; the gland is fixed to the valve cover through a bolt structure and spot welding is arranged at one end of a bolt; the height of the valve cabin in the extending direction of the valve rod is larger than or equal to that of the flashboard; three through grooves formed by the valve seats of the two gate valve assemblies are communicated with each other.
Furthermore, the gate valve component is also provided with a hand wheel; the hand wheel is connected to the other end of the valve rod through a jacking nut.
Furthermore, a bracket for protecting a connecting structure of the hand wheel and the valve rod is sleeved on the peripheries of the hand wheel and the valve rod; the bracket is fixed to the valve stem by spot welding.
Furthermore, a bearing gland used for reducing the rotating friction force between the hand wheel and the bracket is arranged between the hand wheel and the bracket; one end of the bearing gland is rotatably connected to the hand wheel and the other end is rotatably connected to the support.
Further, the bracket is provided with a nozzle tip and a lubrication passage for supplying lubrication oil to the bearing gland; the lubrication passage communicates the oil nipple and the bearing gland.
Furthermore, the through groove is provided with a vertical groove and a transverse groove which are communicated with each other; the vertical groove is communicated with the valve cabin; the transverse groove is communicated with the water inlet, the communication hole and the water outlet.
Furthermore, first bulges are respectively formed at the positions of the valve seat, which are positioned at the upper end and the lower end of the vertical groove; the upper end and the lower extreme of flashboard all are formed with the first arch that is used for respectively with the upper end of erecting the groove and erect the first protruding matched with second arch of the lower extreme of groove.
Further, two ends of the filler are provided with pressing sleeves for improving the sealing performance.
Further, a gasket for sealing a gap between the valve cover and the valve body is arranged between the valve cover and the valve body.
The utility model discloses an useful part lies in the simple structure of the pair gate valve that provides, and the reliability is high, convenient to use.
Drawings
Fig. 1 is a schematic view of a double gate valve of the present invention;
the double-link gate valve 10, the valve body 11, the water inlet 111, the water outlet 112, the communication hole 113, the gate valve assembly 12, the valve seat 121, the three-way groove 1211, the first protrusion 1213, the valve rod 122, the valve cover 123, the through hole 1231, the packing compartment 1232, the packing 1233, the gland 124, the bolt structure 125, the spot welding 126, the shutter 127, the second protrusion 1271, the valve compartment 128, the hand wheel 129, the jacking nut 130, the bracket 131, the oil nipple 1311, the lubrication passage 1312, the bearing gland 132, the pressing sleeve 133 and the gasket 134.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, for the utility model discloses a pair gate valve 10, include: a valve body 11. The valve body 11 is formed with a water inlet 111, a water outlet 112, and a communication hole 1231113. The communication hole 1231113 is used to communicate the water inlet 111 and the water outlet 112. The double gate valve 10 includes two gate valve assemblies 12. The gate valve assemblies 12 are used to control the flow of the water inlet 111 and the water outlet 112. The gate valve assembly 12 includes: valve seat 121, valve stem 122, valve cap 123, and shutter 127. The valve seat 121 is fixedly disposed in the valve body 11 by spot welding 126 and has a three-way groove 1211 formed therein. The bonnet 123 is fixed to an upper end of the valve body 11 and forms a valve chamber 128 together with the valve body 11. The three-way groove 1211 is communicated with the valve cabin 128, the water inlet 111, the communication hole 1231113 and the water outlet 112. One end of the valve stem 122 passes through the bonnet 123 and the valve body 11 in turn and extends into the valve compartment 128. The shutter 127 is connected to one end of the valve stem 122 to be inserted into the three through slots 1211 to open or close the communication hole 1231113. The fluid enters from the inlet 111 and flows through the three-way groove 1211 of one of the two gate valve assemblies 12, the communication hole 1231113, the three-way groove 1211 of the other of the two gate valve assemblies 12, and the outlet 112 in this order. The three-way grooves 1211 formed by the valve seats 121 of the two gate valve assemblies 12 communicate with each other. In normal use, the shutter 127 of one of the two gate valve assemblies 12 is held in the valve compartment 128 so that the three-way groove 1211 of the gate valve assembly 12 is kept in communication with the communication hole 1231113. While the gate plate 127 of the other of the two gate valve assemblies 12 is inserted into the three-way slot 1211 to close the gate valve and retracted into the valve compartment 128 to open the gate valve. Such structure, when one of them gate valve assembly 12's spare part damages, can't normally open or close the gate valve, can use another gate valve assembly 12 to open or close the gate valve, simple structure, the reliability is high, convenient to use.
Specifically, the bonnet 123 is formed with a through hole 1231 for passing the stem 122 therethrough. The wall of the through hole 1231 is formed with a packing compartment 1232. A packing 1233 is disposed within the packing compartment 1232 around the valve stem 122. The packing 1233 serves to seal the gap between the valve stem 122 and the bonnet 123. A gland 124 for pressing and installing the packing 1233 is arranged above the packing cabin 1232. The gland 124 is fixed to the bonnet 123 by a bolt structure 125, and a spot weld 126 is provided at one end of the bolt to improve structural reliability. The height of the valve compartment 128 in the extending direction of the valve stem 122 is equal to or greater than the height of the gate plate 127 to ensure that the gate valve has the maximum flow rate within the structurally allowable range. Here, one end of the shutter 127 is not separated from the three-way groove 1211. The shutter 127 is always in contact with the wall of the three-way groove 1211 to improve sealing.
In one embodiment, the gate valve assembly 12 is further provided with a hand wheel 129 for grasping by a user. The hand wheel 129 is connected to the other end of the valve stem 122 by a jam nut 130.
In one embodiment, a bracket 131 is sleeved around the outer periphery of the hand wheel 129 and the valve stem 122. The bracket 131 serves to protect the connection structure of the hand wheel 129 and the valve stem 122 and to increase the strength of the structure. The bracket 131 is fixed to the stem 122 by a spot welding 126 structure.
In one embodiment, a bearing cover 132 is disposed between the hand wheel 129 and the bracket 131. The bearing gland 132 serves to reduce rotational friction between the hand wheel 129 and the bracket 131. One end of the bearing gland 132 is rotatably connected to the hand wheel 129 and the other end is rotatably connected to the bracket 131.
Further, the bracket 131 is provided with a nozzle 1311 and a lubrication passage 1312. The oil nipple 1311 and the lubrication passage 1312 are used to supply lubrication oil to the bearing gland 132. The lubrication passage 1312 communicates the nozzle 1311 and the bearing cover 132.
As a specific embodiment, the through groove is formed with a vertical groove and a horizontal groove communicating with each other. The vertical channel communicates with valve chamber 128. The transverse groove is communicated with the water inlet 111, the communicating hole 1231113 and the water outlet 112.
As a specific embodiment, the valve seat 121 is formed with first protrusions 1213 at upper and lower ends of the vertical groove, respectively. The upper and lower ends of the shutter 127 are each formed with a second protrusion 1271 for cooperating with the first protrusion 1213 of the upper end of the vertical groove and the first protrusion 1213 of the lower end of the vertical groove, respectively. The structure in which the sealing is achieved by the contact of the first projection 1213 and the second projection 1271, even if the first projection 1213 and the second projection 1271 are worn by long-term use, the sealing performance between the two is not affected. That is to say, the structure can ensure the sealing performance and prolong the service life.
As a specific embodiment, both ends of the packing 1233 are provided with the pressing sleeves 133 for increasing the sealing performance.
As a specific embodiment, a gasket 134 is provided between the bonnet 123 and the valve body 11 for sealing a gap between the bonnet 123 and the valve body 11.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (9)
1. A double gate valve comprising: a valve body; the water-saving valve is characterized in that a water inlet, a water outlet and a communication hole for communicating the water inlet and the water outlet are formed in the valve body; the duplex gate valve comprises two gate valve assemblies for controlling the flow of the water inlet and the water outlet; the gate valve assembly includes: the valve comprises a valve seat, a valve rod, a valve cover and a flashboard; the valve seat is arranged in the valve body and is provided with a three-way groove; the valve cover is fixed to the upper end of the valve body and forms a valve cabin together with the valve body; the three-way groove is communicated with the valve cabin, the water inlet, the communication hole and the water outlet; one end of the valve rod sequentially penetrates through the valve cover and the valve body and extends into the valve cabin; the shutter is connected to one end of the valve stem to be inserted into the three through-grooves to open or close the communication hole; a filler cabin is formed on the wall of a through hole formed by the valve cover and used for the valve rod to pass through; the filler cabin is internally provided with filler surrounding the valve rod and used for sealing a gap between the valve rod and the valve cover; a gland used for press-fitting the packing is arranged above the packing cabin; the gland is fixed to the valve cover through a bolt structure and a spot welding is arranged at one end of a bolt; the height of the valve cabin in the extending direction of the valve rod is greater than or equal to the height of the flashboard; and three through grooves formed by the valve seats of the two gate valve assemblies are communicated with each other.
2. The double gate valve of claim 1,
the gate valve component is also provided with a hand wheel; the hand wheel is connected to the other end of the valve rod through a jacking nut.
3. A twin gate valve as defined in claim 2,
the peripheries of the hand wheel and the valve rod are sleeved with a bracket for protecting a connecting structure of the hand wheel and the valve rod; the bracket is fixed to the valve stem by a spot welding structure.
4. The double gate valve of claim 3,
a bearing gland used for reducing the rotating friction force between the hand wheel and the bracket is arranged between the hand wheel and the bracket; one end of the bearing gland is rotatably connected to the hand wheel, and the other end of the bearing gland is rotatably connected to the support.
5. The double gate valve of claim 4,
the bracket is provided with a nozzle tip and a lubricating passage for supplying lubricating oil to the bearing gland; the lubrication passage communicates the oil nipple and the bearing cover.
6. The double gate valve of claim 1,
the through groove is provided with a vertical groove and a transverse groove which are communicated with each other; the vertical groove is communicated with the valve cabin; the transverse groove is communicated with the water inlet, the communication hole and the water outlet.
7. The double gate valve of claim 6,
first bulges are respectively formed at the positions of the valve seat, which are positioned at the upper end and the lower end of the vertical groove; the upper end and the lower extreme of flashboard all are formed with be used for respectively with erect the first arch of the upper end of groove with erect the first protruding matched with second arch of the lower extreme of groove.
8. The double gate valve of claim 1,
and pressing sleeves for improving the sealing performance are arranged at two ends of the filler.
9. The double gate valve of claim 1,
and a gasket for sealing a gap between the valve cover and the valve body is arranged between the valve cover and the valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022909450.6U CN214222057U (en) | 2020-12-07 | 2020-12-07 | Duplex gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022909450.6U CN214222057U (en) | 2020-12-07 | 2020-12-07 | Duplex gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214222057U true CN214222057U (en) | 2021-09-17 |
Family
ID=77700939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022909450.6U Active CN214222057U (en) | 2020-12-07 | 2020-12-07 | Duplex gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214222057U (en) |
-
2020
- 2020-12-07 CN CN202022909450.6U patent/CN214222057U/en active Active
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