CN109210224B - Bidirectional sealing sluice valve - Google Patents
Bidirectional sealing sluice valve Download PDFInfo
- Publication number
- CN109210224B CN109210224B CN201811178132.8A CN201811178132A CN109210224B CN 109210224 B CN109210224 B CN 109210224B CN 201811178132 A CN201811178132 A CN 201811178132A CN 109210224 B CN109210224 B CN 109210224B
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- valve
- transmission
- sealing
- plates
- supporting plate
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- 238000007789 sealing Methods 0.000 title claims abstract description 72
- 230000002457 bidirectional effect Effects 0.000 title abstract description 14
- 230000005540 biological transmission Effects 0.000 claims abstract description 75
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 230000006835 compression Effects 0.000 claims description 17
- 238000007906 compression Methods 0.000 claims description 17
- 230000035515 penetration Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 9
- 238000005299 abrasion Methods 0.000 abstract description 5
- 230000009471 action Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/16—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together
- F16K3/18—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members
- F16K3/182—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with special arrangements for separating the sealing faces or for pressing them together by movement of the closure members by means of toggle links
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/0254—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor being operated by particular means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/029—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with two or more gates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention relates to a two-way sealing gate valve, which comprises a valve body, wherein the valve body is provided with a valve chamber and is connected with an actuating mechanism, two valve seats are oppositely arranged on the valve body, and two valve plates are correspondingly arranged in the valve chamber; the valve chamber is also internally provided with a transmission mechanism which is connected with the execution mechanism and has a sealed transmission state and a valve-through transmission state, and in the sealed transmission state, the two valve plates are mutually far away so as to be respectively attached to the two valve seats; in the valve transmission state, the two valve plates are mutually close to be separated from the two valve seats respectively. According to the bidirectional sealing gate valve provided by the invention, the two valve plates are respectively attached to the sealing surfaces of the two valve seats of the valve body, so that bidirectional sealing is realized, the sealing is more reliable, and the sealing effect is better. The two valve plates are mutually close or far away through the transmission mechanism, and especially the sealing is released in a mode that the two valve plates are mutually close, so that the relative sliding between the valve plates and the sealing surfaces of the valve seats is avoided, the abrasion of the sealing surfaces is effectively reduced, and the sealing effect is ensured.
Description
Technical Field
The invention belongs to the technical field of valves, and particularly relates to a bidirectional sealing gate valve.
Background
In industrial production, the pressure, flow direction and the like of a medium in a pipeline can change along with production working conditions, and the conditions of opposite flow directions, high pressure sides and low pressure sides of the medium in the pipeline under different working conditions often occur. And the common gate valve is only provided with a sealing surface on one side, and can only bear the high pressure on the corresponding side, when the high pressure side is changed into the other side, the sealing effect is greatly weakened, leakage is possibly generated, the production is influenced, and even safety accidents are caused. If 2 gate valves are arranged oppositely, the bidirectional sealing can be realized, but the equipment investment is increased, the control is complex, and the reliability is low.
Disclosure of Invention
The embodiment of the invention relates to a bidirectional sealing gate valve, which can at least solve part of defects in the prior art.
The embodiment of the invention relates to a two-way sealing gate valve, which comprises a valve body, wherein the valve body is provided with a valve chamber and is connected with an actuating mechanism, two valve seats are oppositely arranged on the valve body, and two valve plates are correspondingly arranged in the valve chamber;
a transmission mechanism is also arranged in the valve chamber, the transmission mechanism is connected with the executing mechanism and has a sealed transmission state and a valve transmission state,
In the sealed transmission state, the two valve plates are far away from each other so as to be respectively attached to the two valve seats;
And in the valve transmission state, the two valve plates are mutually close to be separated from the two valve seats respectively.
As one of the embodiments, the transmission mechanism includes a supporting plate and two sets of transmission units, the transmission units include a transmission connecting rod and a sliding member, two ends of the transmission connecting rod are respectively hinged to the sliding member and the output end of the executing mechanism, the other end of the sliding member is connected to the corresponding valve plate, and the two sliding members are limited to slide on the supporting plate and drive the supporting plate to move along with the output end of the executing mechanism.
As one embodiment, two sleeves are fixed on the supporting plate, two sliding members are respectively slidably arranged in the two sleeves and respectively extend out of the corresponding sleeves to be connected with the valve plate, an annular abutting boss is arranged on the sliding member, a return spring is sleeved on the sliding member, the return spring is accommodated in the sleeve, one end of the return spring abuts against the abutting boss, and the other end of the return spring abuts against the end wall, far away from the transmission connecting rod, of the sleeve.
As one of the embodiments, the sliding member includes a compression spring, a piston portion hinged to the transmission link, and a penetration portion connected to the valve plate, where the piston portion and the penetration portion are both slidably disposed in the sleeve, the abutment boss is formed on the penetration portion, and one end of the compression spring abuts against the piston portion and the other end abuts against the abutment boss.
As one of the embodiments, the inner wall of the sleeve is provided with an annular limiting boss, and the annular limiting boss is positioned at one end of the sleeve, which is close to the transmission connecting rod.
As one of the embodiments, the sliding member is hinged with the corresponding valve plate.
As one of the embodiments, a limiting block is arranged in the valve chamber and is positioned at one side of the supporting plate far away from the executing mechanism; when the supporting plate is abutted against the limiting block, the two valve plates are opposite to the two valve seats respectively.
As one embodiment, a wedge block which can be in wedge fit with the limiting block is arranged on a side surface of the supporting plate, which is far away from the actuating mechanism.
As one embodiment, in the sealed transmission state, the two transmission links are on the same straight line.
As one of the embodiments, the actuator comprises a valve frame fixedly mounted on the valve body, a valve rod movably mounted on the valve frame and connected with the transmission mechanism, and an actuator driving unit for driving the valve rod to move along the axial direction of the valve rod.
The embodiment of the invention has at least the following beneficial effects:
according to the bidirectional sealing gate valve provided by the invention, the two valve plates are respectively attached to the sealing surfaces of the two valve seats of the valve body, so that bidirectional sealing is realized, the sealing is more reliable, and the sealing effect is better. The two valve plates are mutually close or far away through the transmission mechanism, and especially the sealing is released in a mode that the two valve plates are mutually close, so that the relative sliding between the valve plates and the sealing surfaces of the valve seats is avoided, the abrasion of the sealing surfaces is effectively reduced, and the sealing effect is ensured.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a bi-directional sealing gate valve according to an embodiment of the present invention when the bi-directional sealing gate valve is fully opened;
Fig. 2 is a schematic structural diagram of a valve plate and a valve seat when the valve plate and the valve seat are opposite to each other according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a bi-directional sealing gate valve according to an embodiment of the present invention when closed.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-3, an embodiment of the present invention provides a bi-directional sealing gate valve, which comprises a valve body 1, wherein the valve body 1 is provided with a valve chamber and is connected with an actuating mechanism, two valve seats 11 are oppositely arranged on the valve body 1, and two valve plates 2 are correspondingly arranged in the valve chamber; a transmission mechanism is further arranged in the valve chamber, and is connected with the execution mechanism and has a sealed transmission state and a valve-through transmission state, wherein in the sealed transmission state, the two valve plates 2 are mutually far away so as to be respectively attached to the two valve seats 11; in the valve-on transmission state, the two valve plates 2 are close to each other so as to be separated from the two valve seats 11 respectively.
As can be easily understood, in the sealed transmission state, the two valve plates 2 are attached to the two valve seats 11, and the gate valve is in a closed state; in the valve on transmission state, the two valve plates 2 are separated from the two valve seats 11, and the gate valve is in an open state. Sealing surfaces are respectively arranged at the positions of the two valve seats 11, which are used for being attached to the valve plates 2, the two valve plates 2 are correspondingly and respectively provided with sealing surfaces, and when the two valve plates 2 are respectively attached to the sealing surfaces of the two valve seats 11, bidirectional sealing is realized.
According to the bidirectional sealing gate valve provided by the embodiment, the two valve plates 2 are respectively attached to the sealing surfaces of the two valve seats 11 of the valve body 1, so that bidirectional sealing is realized, the sealing is more reliable, and the sealing effect is better. The two valve plates 2 are close to or far away from each other through the transmission mechanism, and especially the two valve plates 2 are close to each other to release sealing, so that relative sliding between the valve plates 2 and the sealing surfaces of the valve seat 11 is avoided, abrasion of the sealing surfaces is effectively reduced, and sealing effect is guaranteed.
Based on the bidirectional sealing, one side is assumed to be a high-pressure side, the other side is assumed to be a low-pressure side, even if the high-pressure side medium pressure exceeds the sealing pressing force applied to the corresponding side valve plate 2 to push the side valve plate 2 open, the high-pressure medium enters the valve chamber, the medium pressure in the valve chamber acts on the back surfaces of the two side valve plates 2, on one hand, the low-pressure side valve plate 2 bears the equidirectional action of the medium pressure and the sealing pressing force, on the other hand, the sealing effect of the side is greatly enhanced, on the other hand, the medium pressure outside the valve of the high-pressure side valve plate 2 is counteracted, and finally, under the action of the sealing pressing force, the side valve plate 2 presses the sealing surface of the valve seat 11 again, so that bidirectional sealing is realized.
Further optimizing the above-mentioned two-way sealing gate valve, as shown in fig. 1-3, the transmission mechanism comprises a supporting plate 5 and two groups of transmission units, the transmission units comprise a transmission connecting rod 3 and a sliding member 4, two ends of the transmission connecting rod 3 are respectively hinged with the sliding member 4 and the output end of the actuating mechanism, the other end of the sliding member 4 is connected with the corresponding valve plate 2, and the two sliding members 4 are limited to slide on the supporting plate 5 and can drive the supporting plate 5 to move along with the output end of the actuating mechanism. The hinge shafts connected with the two ends of the transmission connecting rod 3 are axially parallel and are perpendicular to the linear driving direction of the actuating mechanism.
The actuator is generally used for linear reciprocating driving, and the two sets of transmission units or the two transmission connecting rods 3 are preferably symmetrically arranged relative to the axis of the output end of the actuator, so that the two valve plates 2 can synchronously act. In one embodiment, the valve body 1 is horizontally installed, and the valve port axes of the two valve seats 11 are parallel to the horizontal direction; the actuating mechanism is arranged at the top of the valve body 1, and the axis of the output end is parallel to the vertical direction; the axis of the hinge shaft between the transmission connecting rod 3 and the output end of the actuating mechanism is horizontal and vertical to the axis of the valve port; the pallet 5 is horizontally arranged, and the slide member 4 can only slide horizontally on the pallet 5 except for lifting and moving along with the output end of the actuator. Under the driving action of the actuating mechanism, the transmission mechanism can approach or depart from the valve seat 11, and when the supporting plate 5 moves to the corresponding position and is blocked by the corresponding component in the valve chamber, under the further driving action of the actuating mechanism, the sliding member 4 is limited on the supporting plate 5 to slide, and the sliding member 4 can be driven to slide on the supporting plate 5 through the transmission connecting rod 3, so that the two valve plates 2 are driven to approach or depart from each other.
It can be understood that the valve chamber is internally provided with a limiting structure for limiting the moving stroke of the supporting plate 5, so as to ensure that the two valve plates 2 can be opposite to the two valve seats 11; the setting position of the limiting structure may be selected according to the specific situation, for example, the setting position of the valve seat 11, for example, the relative position between the supporting plate 5 and the sliding member 4, etc., and for example, the limiting structure may be the inner wall of the valve body 1. In the present embodiment, as shown in fig. 1 to 3, a stopper 12 is preferably used, that is: a limiting block 12 is arranged in the valve chamber, and the limiting block 12 is positioned at one side of the supporting plate 5 far away from the executing mechanism; when the supporting plate 5 is abutted against the limiting block 12, the two valve plates 2 are respectively opposite to the two valve seats 11, so that the two valve plates 2 can be mutually separated to be respectively abutted against the two valve seats 11 under the further action of the actuating mechanism.
Further preferably, as shown in fig. 1-3, a wedge 52 that can be wedge-shaped engaged with the stopper 12 is provided on a side surface of the supporting plate 5 away from the actuator. Through the wedge-shaped matching of the supporting plate 5 and the limiting block 12, not only can supporting force be provided during sealing, but also the valve plate 2, a transmission mechanism and the like can be automatically aligned when moving downwards, and the alignment of the valve plate 2 and the valve seat 11 is ensured.
For the connection between the sliding member 4 and the supporting plate 5, a through hole is formed in the supporting plate 5, the sliding member 4 is slidably disposed in the through hole, and two ends of the sliding member are respectively connected with the corresponding transmission connecting rod 3 and the valve plate 2; as a preferred embodiment, as shown in fig. 1-3, two sleeves 51 are fixed on the supporting plate 5, and two sliding members 4 are respectively slidably disposed in the two sleeves 51 and respectively extend out of the corresponding sleeves 51 to be connected with the valve plate 2, so that the sliding members 4 are limited in the sleeves 51 and can drive the supporting plate 5 to be driven together by an actuating mechanism. The sliding member 4 is provided with an annular abutting boss and is sleeved with a return spring 6, and the return spring 6 is accommodated in the sleeve 51, one end of the return spring is abutted against the abutting boss, and the other end of the return spring is abutted against an end wall, far away from the transmission connecting rod 3, of the sleeve 51. The above-mentioned return spring 6 mainly has the function that when the sealing state is released, under the elastic force of the return spring 6, the valve plate 2 is separated from the valve seat 11 along the axial direction (i.e. the valve port axial direction of the valve seat 11, perpendicular to the sealing surface) and then is far away from the valve seat 11 along the direction parallel to the sealing surface (i.e. the linear driving direction of the actuator), so that the relative sliding between the sealing surfaces is avoided, and the abrasion of the sealing surfaces is effectively reduced.
Based on the above structure, the sliding member 4 may be a continuous structure, such as a sliding link, or may be a split structure, in this embodiment, as shown in fig. 1 to 3, preferably, the sliding member 4 includes a compression spring 42, a piston portion 41 hinged with the transmission link 3, and a penetration portion 43 connected with the valve plate 2, where the piston portion 41 and the penetration portion 43 are slidably disposed in the sleeve 51, the abutment boss is formed on the penetration portion 43, and one end of the compression spring 42 abuts against the piston portion 41 and the other end abuts against the abutment boss. By arranging the compression spring 42, sufficient sealing compression force is provided, sealing effect is ensured, abrasion of a sealing surface and a hinge part can be compensated, equipment is reliable, and service life is long. Further, an annular limiting boss is disposed on the inner wall of the sleeve 51 and is located at one end of the sleeve 51 near the transmission link 3, so as to limit the sliding travel of the sliding member 4/piston 41 in the sleeve 51, and avoid sliding out of the sleeve 51. The stiffness of the hold-down spring 42 is preferably greater than the stiffness of the return spring 6, preferably to a greater extent than the stiffness of the return spring 6, with the hold-down spring 42 acting as the primary spring hold-down force imparting member.
Further optimizing the above structure, as shown in fig. 1-3, preferably, in the above sealed transmission state, the supporting plate 5 abuts against the limiting block 12, and the two transmission links 3 are on the same straight line. Based on the split sliding member 4, the axes of the transmission connecting rod 3, the piston part 41, the compression spring 42, the through part 43, the return spring 6 and the valve plate 2 are preferably collinear, so that the directions of the reaction forces born by the two transmission connecting rods 3 are opposite and offset, the transmission mechanism reaches a self-locking state, no additional power is provided by an actuating mechanism, and the sealing is more reliable.
Further optimizing the above structure, as shown in fig. 1-3, the sliding member 4 is hinged with the corresponding valve plate 2, and further preferably is in spherical hinge connection, so that the valve plate 2 can swing in a self-adaptive manner when being attached to the sealing surface of the valve seat 11, and the processing and assembling errors are compensated, so that the valve plate 2 is ensured to be completely attached to the sealing surface of the valve seat 11.
The actuator may be a manual actuator or an automatic actuator, etc. which are conventional in the art. In this embodiment, as shown in fig. 1-3, the actuator preferably includes a valve frame 72 fixedly mounted on the valve body 1, a valve rod 73 movably mounted on the valve frame 72 and connected to the transmission mechanism, and an actuator driving unit 71 for driving the valve rod 73 to move in its axial direction. The execution driving unit 71 can adopt automatic driving equipment such as a hydraulic cylinder, an air cylinder, an electric push rod and the like, and can also adopt driving structures such as a motor and a screw rod mechanism and the like; in this embodiment, the actuator 71 comprises a hydraulic cylinder mounted on the valve frame 72 and having an output shaft coaxially connected to the valve stem 73. Further, the valve frame 72 is provided with an opening limiting portion for preventing the valve plate 2 and the valve body 1 from being damaged by excessive operation of a driving device such as a hydraulic cylinder when the gate valve is opened.
Based on the structure, the working process of the gate valve is approximately as follows:
When the valve is closed, the execution driving unit 71 drives the valve plate 2, the supporting plate 5 and the like to move downwards together through the two transmission connecting rods 3 until the bottom wedge block 52 of the supporting plate 5 is matched with the limiting block 12. At this time, the centers of the sealing surfaces of the valve plate 2 and the valve seat 11 are at the same height, but a certain distance is reserved between the valve plate 2 and the valve seat 11.
The actuating drive unit 71 drives the valve rod 73 to move further downwards, the piston part 41 is pushed by the transmission connecting rod 3 to compress the compression spring 42, the compression spring 42 overcomes the force of the return spring 6 and drives the valve plate 2 to approach the valve seat 11 until the end of the valve rod 73 contacts the supporting plate 5, at the moment, the compression spring 42 is compressed to the maximum extent, and a sufficient sealing compression force is generated between the valve plate 2 and the sealing surface of the valve seat 11.
When the valve is opened, the actuating drive unit 71 drives the valve rod 73 to move upwards, the piston part 41 is driven to slide horizontally through the transmission connecting rod 3, the compression spring 42 is gradually loosened, the sealing compression force is removed, the through-connection part 43 and the valve plate 2 are driven to move horizontally through the return spring 6, the valve plate 2 is separated from the sealing surface of the valve seat 11, and a certain safety distance S is kept. When the piston portion 41 is retracted to the limit position, the valve rod 73 continues to move upward, and the valve plate 2, the sleeve 51, the pallet 5 and the like are lifted to move upward integrally, so that the valve is completely opened.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (3)
1. A bi-directional sealing gate valve comprising a valve body having a valve chamber and an actuator connected thereto, characterized in that: two valve seats are oppositely arranged on the valve body, and two valve plates are correspondingly arranged in the valve chamber;
a transmission mechanism is also arranged in the valve chamber, the transmission mechanism is connected with the executing mechanism and has a sealed transmission state and a valve transmission state,
In the sealed transmission state, the two valve plates are far away from each other so as to be respectively attached to the two valve seats;
in the valve transmission state, the two valve plates are mutually close to be separated from the two valve seats respectively;
The transmission mechanism comprises a supporting plate and two groups of transmission units, the transmission units comprise a transmission connecting rod and a sliding member, two ends of the transmission connecting rod are respectively hinged with the sliding member and the output end of the actuating mechanism, the other end of the sliding member is connected with the corresponding valve plate, and the two sliding members are limited to slide on the supporting plate and can drive the supporting plate to move along with the output end of the actuating mechanism;
The two sliding members are respectively arranged in the two sleeves in a sliding manner and respectively extend out of the corresponding sleeves to be connected with the valve plate, an annular abutting boss is arranged on the sliding member, a return spring is sleeved on the sliding member, the return spring is accommodated in the sleeve, one end of the return spring abuts against the abutting boss, and the other end of the return spring abuts against the end wall, far away from the transmission connecting rod, of the sleeve;
The sliding member comprises a compression spring, a piston part hinged with the transmission connecting rod and a penetration part connected with the valve plate, the piston part and the penetration part are both arranged in the sleeve in a sliding manner, the abutting boss is formed on the penetration part, one end of the compression spring abuts against the piston part, and the other end of the compression spring abuts against the abutting boss;
the sliding component is in spherical hinge connection with the corresponding valve plate;
In the sealed transmission state, the two transmission connecting rods are positioned on the same straight line, specifically, the axis of the transmission connecting rod, the axis of the piston part, the axis of the compression spring, the axis of the penetration part, the axis of the return spring and the center of the valve plate are collinear;
a limiting block is arranged in the valve chamber and is positioned at one side of the supporting plate far away from the executing mechanism; when the supporting plate is abutted against the limiting block, the two valve plates are respectively opposite to the two valve seats; and a wedge block which can be in wedge fit with the limiting block is arranged on the plate surface of one side of the supporting plate, which is far away from the actuating mechanism.
2. The bi-directional sealing gate valve of claim 1, wherein: the inner wall of the sleeve is provided with an annular limiting boss, and the annular limiting boss is positioned at one end of the sleeve, which is close to the transmission connecting rod.
3. The bi-directional sealing gate valve of claim 1, wherein: the actuating mechanism comprises a valve frame fixedly arranged on the valve body, a valve rod movably arranged on the valve frame and connected with the transmission mechanism, and an actuating drive unit for driving the valve rod to move along the axial direction of the valve rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811178132.8A CN109210224B (en) | 2018-10-10 | 2018-10-10 | Bidirectional sealing sluice valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811178132.8A CN109210224B (en) | 2018-10-10 | 2018-10-10 | Bidirectional sealing sluice valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109210224A CN109210224A (en) | 2019-01-15 |
| CN109210224B true CN109210224B (en) | 2024-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811178132.8A Active CN109210224B (en) | 2018-10-10 | 2018-10-10 | Bidirectional sealing sluice valve |
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| Country | Link |
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| CN (1) | CN109210224B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112443672B (en) * | 2019-08-30 | 2023-09-19 | 浙江三花智能控制股份有限公司 | Valve device |
| CN111197660A (en) * | 2020-01-20 | 2020-05-26 | 陈少同 | Gate valve |
| CN111173951B (en) * | 2020-02-04 | 2021-07-20 | 浙江中昊阀门有限公司 | Gate valve |
| CN115750793B (en) * | 2022-10-10 | 2023-12-08 | 深圳市纳设智能装备股份有限公司 | Slit valve and semiconductor processing equipment |
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| CN105351550A (en) * | 2015-12-16 | 2016-02-24 | 温州职业技术学院 | Double-plate hard sealing gate valve |
| CN208935434U (en) * | 2018-10-10 | 2019-06-04 | 中冶南方工程技术有限公司 | Two way seal gate valve |
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