CN216519677U - Rotary-closing and expanding type parallel gate plate gate valve - Google Patents
Rotary-closing and expanding type parallel gate plate gate valve Download PDFInfo
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- CN216519677U CN216519677U CN202123130649.XU CN202123130649U CN216519677U CN 216519677 U CN216519677 U CN 216519677U CN 202123130649 U CN202123130649 U CN 202123130649U CN 216519677 U CN216519677 U CN 216519677U
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Abstract
The utility model discloses a rotary closing expanding type parallel gate plate gate valve, wherein a valve seat is arranged on a valve body, a valve rod is arranged in the valve body, a gate plate assembly is arranged on the valve body, the gate plate assembly is formed by combining at least two gate plates, and adjacent gate plates are combined and connected through a rotary closing clamping jaw and a rotary closing clamping groove; the valve rod is used for driving the flashboard assembly to open or close; a disc spring is arranged in the flashboard assembly and used for pushing the flashboard to be attached to the valve seat; the left and right flashboards are directly and movably connected in a screwing mode; after screwing, the two flashboards are directly matched with the valve rod to realize connection and flashboard positioning, the two flashboards are prevented from being separated in the opening and closing process of the valve, and a disc spring is used for replacing a spiral spring in the middle of the flashboards. The structure of the parallel double gate plates is simplified, the geometric dimension of the valve clack is reduced, the valve body is more convenient and faster to process and install, the overall dimension of the valve body is reduced, materials are saved, and the production cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of valves, and relates to a rotary-closing and expanding type parallel gate plate gate valve.
Background
According to the structural form of the gate plate, the gate valve can be divided into a single gate plate and a double gate plate. The sealing pair of the single-gate valve usually adopts a wedge-shaped structure, and the sealing surface of the single-gate valve forms an included angle of 3 degrees or 5 degrees with the vertical center line of the valve body. The sealing pair of the double-gate valve can adopt a wedge structure and a parallel structure, and the difference of the parallel structure of the double-gate valve and the wedge structure lies in that the sealing surface is parallel to the vertical center line of the valve body. The sealing principle of the wedge gate valve is that the wedge gate plate is wedged into the valve seat to generate lateral pressing force, so that the wedge gate plate is tightly attached to the sealing surface of the valve seat, and sealing is achieved. The sealing principle of the parallel double-gate valve is that the sealing is achieved by medium pressure. The wedge-shaped flashboard has the possibility of generating thermal locking (wedging) when the working temperature exceeds 482 ℃, so that the valve cannot be normally opened, and the parallel double flashboards have the greatest advantage of being free from the influence of thermal expansion, effectively avoid the thermal locking under the high-temperature working condition and have reliable operation safety. Therefore, the application of the parallel type double gate valve is also becoming more and more widespread.
At present, a common parallel double-gate plate structure is that a left gate plate and a right gate plate are movably fixed through a clamping ring and a limiting block (or a limiting pin), so that the left gate plate and the right gate plate cannot be separated and fall off in the opening and closing process of a valve; one or more spiral springs are arranged in the middle of the flashboard, so that the flashboard is always tightly attached to the valve seat; the valve rod is connected with the clamping ring, the valve rod drives the clamping ring and the left and right valve clacks to move up and down to realize the opening and closing of the valve, and the structure of the valve is shown in figure 1. The structure is complex, the processing and the installation are time-consuming and labor-consuming, and the cost is high; in addition, due to the fact that the spiral spring is arranged between the two gate plates, occupied space is large, the total thickness of the gate plates is increased in design, the overall geometric size of the gate plates is increased correspondingly, a larger valve body middle cavity is needed for accommodating the combination piece of the gate plates, and the size of the valve body is increased correspondingly.
SUMMERY OF THE UTILITY MODEL
The utility model provides a rotary-closing expanding type parallel gate plate gate valve, which aims to overcome the defects in the prior art, simplify the structure of a parallel double gate plate, reduce the geometric dimension of a valve clack and reduce the overall dimension of a valve body.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model discloses a rotary closing expanding type parallel gate plate gate valve which comprises a valve body, wherein a valve seat is installed on the valve body, a valve rod is arranged in the valve body, a gate plate assembly is arranged on the valve body and consists of at least two gate plates, and adjacent gate plates are connected in a combined mode through a rotary closing clamping jaw and a rotary closing clamping groove; the valve rod is used for driving the flashboard assembly to perform opening or closing movement; and a disc spring is arranged in the gate plate assembly and used for pushing the gate plate to be attached to the valve seat.
Therefore, compared with the prior art, the rotary-closing expanding type parallel gate plate gate valve has the advantage that a clamping ring in the middle is omitted. In the prior art, a clamping ring, a left flashboard and a right flashboard are needed, and the left flashboard and the right flashboard are fixed through the clamping ring and are connected with a valve rod through the clamping ring. The rotary-closing expanding type parallel gate plate gate valve only has the advantages that the left gate plate and the right gate plate are connected in a combined mode through the rotary-closing clamping jaws and are directly connected with the valve rod, the thickness of a gate plate assembly is reduced, and the whole space required by a valve body is reduced; the middle of the left flashboard and the right flashboard replaces a spiral spring with a disc spring, so that the structure of the parallel double flashboards is simplified, and the geometric dimension of the valve clacks is reduced.
Further, the flashboard sub-assembly comprises left and right flashboard combination, and left and right flashboard is through closing the jack catch soon and closing draw-in groove built-up connection soon.
Furthermore, set up bellied rotary joint jack catch on the side of one of them flashboard of left and right flashboard, set up sunken rotary joint draw-in groove on the adjacent side of another flashboard, left and right flashboard passes through rotary joint jack catch is screwed into it is connected in the rotary joint draw-in groove.
Furthermore, the screwing clamping jaws are sector-shaped bulges, and the screwing clamping grooves are sector-shaped grooves.
Furthermore, the central angle of the screwing claw is smaller than that of the screwing clamping groove.
Furthermore, set up two at least bellied rotary joint jack catchs on the side of one of them flashboard of left and right flashboard, set up on the adjacent side of another flashboard with rotary joint jack catch assorted sunken rotary joint draw-in groove.
Further, a valve cover is arranged at the top of the valve body.
Further, the valve body is internally provided with a filler sleeved on the outer side of the valve rod, the top of the filler is provided with a filler pressing sleeve sleeved on the outer side of the valve rod, and the bottom of the filler is provided with a filler pad sleeved on the outer side of the valve rod.
Further, a valve rod nut is sleeved on the outer side of the upper end of the valve rod, and a connecting nut steel sleeve is sleeved on the outer side of the valve rod nut through threads.
Further, a bearing is arranged outside the nut steel sleeve.
The utility model has the beneficial effects that:
the rotary-closing expanding type parallel flashboard gate valve of the utility model cancels parts such as clamping rings, limiting blocks and the like in the original structure, and directly and movably connects the left flashboard and the right flashboard in a rotary-closing mode; after screwing, the two gate plates are directly matched with the valve rod, so that connection is finished; meanwhile, the positioning of the flashboards is realized, the two flashboards are prevented from being separated in the opening and closing process of the valve, and a disc spring is used for replacing a spiral spring in the middle of the flashboards. The structure of the parallel double gate plates is simplified, the geometric dimension of the valve clack is reduced, the valve body is more convenient and faster to process and install, the overall dimension of the valve body is reduced, materials are saved, and the production cost is reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic structural diagram of a parallel double gate plate gate valve of the prior art;
FIG. 2 is a schematic structural diagram of a gate assembly of the swing-open parallel gate valve of the present invention.
In the figure, 1 is a valve body, 2 is a valve seat, 3 is a flashboard, 301 is a screwing claw, 302 is a disc spring, 4 is a clamping ring, 5 is a spring, 6 is a limit pin, 7 is a pin, 8 is a valve rod, 9 is a valve cover, 10 is a sealing ring, 11 is a backing ring, 12 is a four-ring opening, 13 is a supporting plate, 14 is a packing pad, 15 is a packing, 16 is a packing pressing sleeve, 17 is a support assembly, 18 is a bearing, 19 is a nut steel sleeve, 20 is a valve rod nut, 21 is a bearing pressing cover, 22 is an oil cup, and 23 is a packing pressing plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. It is to be understood that the disclosed embodiments are merely exemplary of the utility model, and are not intended to be exhaustive or exhaustive. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical solutions provided by the embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Examples
Referring to fig. 2 in conjunction with fig. 1, a swing-in expanding type parallel gate valve,
the valve comprises a valve body 1, a valve seat 2 is arranged on the valve body 1, a valve rod 8 is arranged in the valve body 1, a flashboard assembly is arranged on the valve body 1 and consists of at least two flashboards 3, and the adjacent flashboards 3 are connected with each other through a screwing clamping jaw 301 and a screwing clamping groove in a combined manner; the valve rod 8 is used for driving the flashboard assembly to open or close; a disc spring 302 is arranged in the shutter assembly, and the disc spring 302 is used for pushing the shutter 3 to be attached to the valve seat 2.
It can be seen that, compared with the prior art, the screwing and expanding type parallel gate plate gate valve of the embodiment omits the clamping ring 4 in the middle. In the prior art, a clamping ring 4, a left flashboard and a right flashboard are needed, and the left flashboard and the right flashboard 3 are fixed through the clamping ring 4 and are connected with a valve rod 8 through the clamping ring 4. In the screw-on expanding type parallel gate plate gate valve of the embodiment, only the left gate plate and the right gate plate are combined and connected through the screw-on clamping jaws 301 and are directly connected with the valve rod 8, so that the thickness of a gate plate assembly is reduced, and the required overall space of the valve body 1 is reduced; a disc spring 302 is used for replacing a spiral spring 5 in the middle of the left and right flashboards 3; the structure of the parallel double gate plates is simplified, and the geometric dimension of the valve clack is reduced.
Specifically, the gate plate assembly is formed by combining a left gate plate 3 and a right gate plate 3, and the left gate plate 3 and the right gate plate 3 are connected with each other by combining a screwing claw 301 and a screwing clamping groove in a combining manner.
It can be specific, set up bellied rotary joint jack catch 301 on the side of one of them flashboard of left and right flashboard 3, set up sunken rotary joint draw-in groove on the adjacent side of another flashboard, left and right flashboard 3 is connected in the rotary joint draw-in groove through rotary joint jack catch 301.
In some embodiments, the engaging claws 301 are fan-shaped protrusions, and the engaging grooves are fan-shaped grooves.
In order to facilitate the screwing combination installation of the screwing clamping jaw 301 and the screwing clamping groove, the central angle of the fan-shaped clamping jaw is smaller than that of the fan-shaped groove.
Specifically, in order to enable the screwing claw 301 and the screwing clamping groove to have a gap when being screwed and connected with each other, the screwing claw and the screwing clamping groove are convenient for the screwing and combining operation of the screwing claw and the screwing clamping groove, the central angle of the fan-shaped claw is 88 degrees, and the central angle of the fan-shaped groove is 92 degrees.
In some embodiments, at least two protruding screwing claws 301 are arranged on the side edge of one of the left and right gate plates 3, and a recessed screwing clamping groove matched with the screwing claws 301 is arranged on the adjacent side edge of the other gate plate.
In some embodiments, a bonnet 9 is provided on top of the valve body 1.
Specifically, the valve body 1 is internally provided with a filler 15 sleeved outside the valve rod 8, and the top of the filler 15 is provided with a filler pressing sleeve 16 sleeved outside the valve rod 8. The bottom of the packing 15 is provided with a packing pad 14 sleeved outside the valve rod 8. Packing 15, packing gland 16 and packing gasket 14 to provide a dynamic seal to prevent leakage of media along the valve stem.
Specifically, the valve rod nut 20 is sleeved on the outer side of the upper end of the valve rod 8, and the connecting nut steel sleeve 19 is sleeved on the outer side of the valve rod nut 20 through threads. The nut steel sleeve 19 is combined with the valve rod nut 20 to drive the valve rod 8 to move up and down.
The bearing 18 may be provided outside the nut steel sleeve 19.
In some embodiments, a bearing gland 21 is provided on the bearing 18.
As shown in fig. 1, in the prior parallel gate valve, a clamping ring 4 is used for clamping a gate plate 3; the spring 5 is used for pushing the gate plate 3 to be attached to the valve seat 2; the limiting pin 6 is used for movably fixing the flashboard 3, so that the flashboard 3 can be prevented from being separated from the clamping ring 4, and the flashboard 3 has a certain free moving space; the pin 7 is used for preventing the valve rod 8 connected through the screw thread from loosening with the clamping ring 4; the valve rod 8 is used for driving the flashboard assembly to open and close; the packing 15, the packing pressure plate 23 and the packing pressure sleeve 16 are used for providing dynamic sealing and preventing a medium from leaking along the valve rod 8; the sealing ring 10, the backing ring 11, the four-open ring 12 and the supporting plate 13 form a self-sealing structure, the valve cover 9 is lifted by pre-tightening a nut on the supporting plate 13, so that the sealing ring 10 is pre-tightened, and the sealing is tighter as the pressure of a medium in the valve body 1 is higher; the nut steel sleeve 19 is combined with the valve rod nut 20 to drive the valve rod 8 to move up and down.
Referring to fig. 2, it can be seen that, in the gate valve with the parallel gate plates opened by screwing, the original clamp ring 4 is removed, the left gate plate 3 and the right gate plate 3 are connected by screwing, and the gate valve is assembled with the valve rod 8 after screwing; the valve rod 8 can drive the flashboard assembly to move in an opening and closing mode and can play a role in preventing the flashboard 3 from loosening. In addition, the disc spring 302 replaces the spiral spring 5, so that the occupied space is small, and the external dimension of the flashboard assembly can be obviously reduced. Meanwhile, the size of the cavity in the valve body 1 is correspondingly reduced, and the production cost is reduced.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A rotary-closing expanding type parallel gate plate gate valve comprises a valve body, wherein a valve seat is arranged on the valve body, and a valve rod is arranged in the valve body; the valve rod is used for driving the flashboard assembly to perform opening or closing movement; and a disc spring is arranged in the gate plate assembly and used for pushing the gate plate to be attached to the valve seat.
2. The swing-on expanding parallel gate plate gate valve according to claim 1, wherein the gate plate assembly is composed of a left gate plate and a right gate plate which are connected by a swing-on claw and a swing-on groove.
3. The swing-on expanding parallel gate plate gate valve according to claim 2, wherein a convex swing-on jaw is provided on one side edge of the left gate plate and the right gate plate, a concave swing-on slot is provided on the adjacent side edge of the other gate plate, and the left gate plate and the right gate plate are connected by the swing-on jaw being swung into the swing-on slot.
4. The spin-on expanding parallel gate valve of claim 1, wherein the spin-on jaws are fan-shaped protrusions and the spin-on slots are fan-shaped recesses.
5. The swing-in expanding parallel gate plate gate valve according to claim 4, wherein the central angle of the swing-in claw is smaller than the central angle of the swing-in groove.
6. The swing-in expanding parallel gate plate gate valve according to claim 3, wherein at least two protruded swing-in claws are arranged on the side edge of one of the left and right gate plates, and the recessed swing-in grooves matched with the swing-in claws are arranged on the adjacent side edge of the other gate plate.
7. The swing-to-prop parallel gate plate gate valve of claim 1, wherein a valve cover is provided on the top of the valve body.
8. The spin-on expanding parallel gate valve of claim 1, wherein the valve body has a packing disposed therein and disposed outside the valve stem, the top of the packing has a packing pressing sleeve disposed therein and disposed outside the valve stem, and the bottom of the packing has a packing pad disposed therein and disposed outside the valve stem.
9. The swing-on expanding parallel gate plate gate valve according to claim 1, wherein a stem nut is sleeved on the outer side of the upper end of the valve stem, and a connecting nut steel sleeve is sleeved on the outer side of the stem nut through threads.
10. The swing-on expanding parallel gate plate gate valve of claim 9, wherein said nut steel sleeve is externally provided with bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123130649.XU CN216519677U (en) | 2021-12-14 | 2021-12-14 | Rotary-closing and expanding type parallel gate plate gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123130649.XU CN216519677U (en) | 2021-12-14 | 2021-12-14 | Rotary-closing and expanding type parallel gate plate gate valve |
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| Publication Number | Publication Date |
|---|---|
| CN216519677U true CN216519677U (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123130649.XU Active CN216519677U (en) | 2021-12-14 | 2021-12-14 | Rotary-closing and expanding type parallel gate plate gate valve |
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| CN (1) | CN216519677U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325194A (en) * | 2022-10-17 | 2022-11-11 | 中国空气动力研究与发展中心高速空气动力研究所 | Energy-saving valve easy and convenient to disassemble, assemble and maintain |
-
2021
- 2021-12-14 CN CN202123130649.XU patent/CN216519677U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115325194A (en) * | 2022-10-17 | 2022-11-11 | 中国空气动力研究与发展中心高速空气动力研究所 | Energy-saving valve easy and convenient to disassemble, assemble and maintain |
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