CN109114241B - Two-way sealing gate valve with double valve plates - Google Patents
Two-way sealing gate valve with double valve plates Download PDFInfo
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- CN109114241B CN109114241B CN201811203143.7A CN201811203143A CN109114241B CN 109114241 B CN109114241 B CN 109114241B CN 201811203143 A CN201811203143 A CN 201811203143A CN 109114241 B CN109114241 B CN 109114241B
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- 238000007789 sealing Methods 0.000 title claims abstract description 73
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 230000005540 biological transmission Effects 0.000 claims description 53
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 230000009977 dual effect Effects 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 15
- 230000002457 bidirectional effect Effects 0.000 description 12
- 230000009471 action Effects 0.000 description 8
- 238000003825 pressing Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000010586 diagram 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
- 239000012530 fluid Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 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
- F16K3/12—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 wedge-shaped arrangements of sealing faces
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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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
- F16K27/047—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members with wedge-shaped obturating members
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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
- F16K3/30—Details
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention relates to a bi-directional sealing gate valve with double valve plates, 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, two valve plates and two groups of wedge structures are correspondingly arranged in the valve chamber, inclined planes of each group of wedge structures are opposite to the corresponding valve seats so as to enclose a wedge space, and sliding blocks matched with the inclined planes of the corresponding wedge structures are arranged on non-sealing plate surfaces of the two valve plates; the two valve plates are connected with the executing mechanism so as to have a valve opening state and a valve closing state, in the valve closing state, the valve plates are attached to the corresponding valve seats, the sliding blocks are abutted to the inclined surfaces of the corresponding wedge-shaped structures, and in the valve opening state, the valve plates are separated from the corresponding valve seats. According to the bi-directional sealing gate valve with the double valve plates, the two valve plates are respectively attached to the sealing surfaces of the two valve seats of the valve body, so that bi-directional sealing is realized, the sealing is more reliable, and the sealing effect is better.
Description
Technical Field
The invention belongs to the technical field of valves, and particularly relates to a bidirectional sealing gate valve with double valve plates.
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 with double valve plates, which at least can solve part of defects in the prior art.
The embodiment of the invention relates to a bidirectional sealing gate valve with double valve plates, 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, two valve plates and two groups of wedge structures are correspondingly arranged in the valve chamber, inclined planes of each group of wedge structures are opposite to the corresponding valve seats so as to enclose a wedge space, and sliding blocks matched with the inclined planes of the corresponding wedge structures are respectively arranged on non-sealing plate surfaces of the two valve plates; the two valve plates are connected with the executing mechanism and respectively have a valve opening state and a valve closing state, in the valve closing state, the valve plates are attached to the corresponding valve seats, the sliding blocks are abutted to the corresponding wedge-shaped structure inclined planes, and in the valve opening state, the valve plates are separated from the corresponding valve seats.
As one of the embodiments, each valve plate is connected with the actuating mechanism through a transmission connecting rod, both the transmission connecting rods are hinged with the output end of the actuating mechanism, and the axial direction of the hinge shaft is perpendicular to the linear driving direction of the actuating mechanism and the axial direction of the valve port of the valve seat.
As one of the embodiments, the transmission connecting rod includes a mounting section fixedly connected with the valve plate and having an axis parallel to the linear driving direction of the actuating mechanism, the mounting section includes a first rod body, a second rod body, a transmission sleeve and a compression spring accommodated in the transmission sleeve, and the first rod body and the second rod body are both arranged on the transmission sleeve in a penetrating manner and respectively abutted to two ends of the compression spring.
As one embodiment, the first rod body and the second rod body are respectively provided with an abutting boss, and each abutting boss is respectively located in the corresponding transmission sleeve and has a diameter larger than that of the corresponding rod body penetrating hole.
As one of the embodiments, the transmission connecting rod further comprises a transmission section, one end of the transmission section is hinged with the output end of the actuating mechanism, and the other end of the transmission section is in oblique connection with the corresponding installation section.
As one of the embodiments, the two transmission links are connected as one body by a synchronous link.
As one of the embodiments, the axis of the synchronizing link is parallel to the valve port axis of the valve seat.
As one of the embodiments, the wedge structure includes two wedges, the two wedges are respectively arranged at two sides of the axis of the valve port of the corresponding valve seat, the two sliders on each valve plate are correspondingly arranged, and in the valve closing state, the two sliders on each valve plate are respectively abutted with the corresponding two wedges.
As one of the embodiments, the actuating mechanism comprises a valve frame fixedly mounted on the valve body, a valve rod movably mounted on the valve frame and connected with the two valve plates, and an actuating drive unit for driving the valve rod to move along the axial direction of the valve rod.
As one embodiment, the valve rod is provided with a limiting block, and the valve frame is respectively provided with a valve closing limiting baffle and a valve opening limiting baffle.
The embodiment of the invention has at least the following beneficial effects:
according to the bi-directional sealing gate valve with the double valve plates, the two valve plates are respectively attached to the sealing surfaces of the two valve seats of the valve body, so that bi-directional sealing is realized, the sealing is more reliable, and the sealing effect is better. Compared with a gate valve of a traditional wedge-shaped matching structure, the two groups of wedge-shaped structures are adopted to respectively compress two valve plates, so that the two valve plates are guaranteed to be respectively and independently sealed and attached, and the bidirectional sealing effect and the working reliability are 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 to push the side valve plate open, the high-pressure medium enters the valve chamber, the medium pressure in the valve chamber acts on the back surfaces of the valve plates on two sides, so that on one hand, the low-pressure side valve plate bears the equidirectional action of the medium pressure and the sealing pressing force, the sealing effect of the side is greatly enhanced, on the other hand, the medium pressure outside the valve plate of the high-pressure side valve plate is counteracted, and finally, the side valve plate presses the valve seat sealing surface again under the action of the sealing pressing force, so that bidirectional sealing is realized.
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 with dual valve plates according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a bi-directional sealing gate valve with dual valve plates according to an embodiment of the present invention;
FIG. 3 is a schematic view of the structure in the direction A in FIG. 1;
fig. 4 is a cross-sectional view taken along B-B in fig. 1.
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 and fig. 2, the embodiment of the invention provides a bi-directional sealing gate valve with double valve plates 2, 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, two valve plates 2 and two groups of wedge structures are correspondingly arranged in the valve chamber, inclined planes of each group of wedge structures are opposite to the corresponding valve seats 11 so as to form a wedge space in a surrounding manner, and sliding blocks 21 matched with the inclined planes of the corresponding wedge structures are respectively arranged on non-sealing plate surfaces of the two valve plates 2; the two valve plates 2 are connected with the actuating mechanism so as to have a valve opening state and a valve closing state, in the valve closing state, the valve plates 2 are attached to the corresponding valve seats 11, the sliding blocks 21 are abutted to the corresponding wedge-shaped structure inclined planes, and in the valve opening state, the valve plates 2 are separated from the corresponding valve seats 11.
As will be readily understood, in the above-described valve closing 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-open state, the two valve plates 2 are separated from the two valve seats 11, and the gate valve is in the 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.
The valve plate 2 and the sliding block 21 assembled with the valve plate form a wedge body, and the wedge body is matched with the corresponding valve seat 11 and the wedge structure and can be inserted into the corresponding wedge-shaped space. Taking the above valve body 1 as an example, the valve port axes of the two valve seats 11 are parallel to the horizontal direction, the sealing surfaces of the valve seats 11 are parallel to the vertical direction, and the sealing surfaces/plate surfaces of the valve plates 2 are also parallel to the vertical direction; the inclined surface of the wedge structure is preferably gradually approaching the corresponding valve seat 11 from top to bottom, and the inclined surface of the slider 21 is correspondingly arranged. When the valve plate 2 is tightly attached to the sealing surface of the valve seat 11, the sliding block 21 is in inclined plane fit with the wedge-shaped structure, and the wedge-shaped structure can provide a horizontal pressing force for the sliding block 21 and the valve plate 2, so that the valve plate 2 is tightly attached to the valve seat 11.
The bi-directional sealing gate valve with the double valve plates 2 provided by the embodiment realizes bi-directional sealing through the joint of the two valve plates 2 and the sealing surfaces of the two valve seats 11 of the valve body 1 respectively, and has more reliable sealing and better sealing effect. Compared with a gate valve of a traditional wedge-shaped matching structure, in the embodiment, two groups of wedge-shaped structures are adopted to respectively compress two valve plates 2, so that the two valve plates 2 are guaranteed to be respectively and independently sealed and attached, and the bidirectional sealing effect and the working reliability are 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.
Continuing the above-mentioned two-way sealing gate valve, as in fig. 1 and 2, each valve plate 2 is connected with the actuating mechanism through a transmission connecting rod 3, both the transmission connecting rods 3 are hinged with the output end of the actuating mechanism, and the axial direction of the hinge shaft is perpendicular to the linear driving direction of the actuating mechanism and the axial direction of the valve port of the valve seat 11. Because the transmission connecting rod 3 is hinged with the output end of the actuating mechanism, the two valve plates 2 can swing in a self-adaptive way to a certain extent when being in butt joint with the valve seat 11, so as to compensate processing and assembling errors and ensure that the two valve plates 2 can be aligned and attached with the sealing surface of the valve seat 11.
As a further preferred embodiment, as shown in fig. 1 and 2, the two transmission links 3 are integrally connected through a synchronous link 5, so that the synchronization and stress coordination of the actions of the two valve plates 2 can be ensured, for example, the pressure applied to the valve plate 2 at the high pressure side can be transmitted to the valve plate 2 at the low pressure side, so that the directions of the acting forces applied to the two valve plates 2 are opposite and offset each other, and a self-locking state is achieved to a certain extent. Further preferably, the axis of the synchronizing connecting rod 5 is parallel to the axis of the valve port of the valve seat 11, and the synchronizing connecting rod 5 and the two transmission connecting rods 3 are spliced into a three-fork connecting rod, so that the synchronization and stress coordination of the actions of the two valve plates 2 are further improved.
The actuator is generally used for linear reciprocating driving, and the two transmission connecting rods 3 are preferably symmetrically arranged relative to the axis of the output end of the actuator, so as to ensure the synchronous action of the two valve plates 2. In the embodiment in which the valve body 1 is horizontally installed, the actuator is installed at the top of the valve body 1, the axis of the output end is parallel to the vertical direction, and it is easy to know that the axis of the hinge shaft between the transmission connecting rod 3 and the output end of the actuator is horizontal.
Continuing the above-mentioned two-way sealing gate valve, as shown in fig. 1 and 2, the transmission connecting rod 3 includes an installation section 31 fixedly connected with the valve plate 2 and having an axis parallel to the linear driving direction of the actuator, the installation section 31 includes a first rod body 311, a second rod body 312, a transmission sleeve 313, and a compression spring 314 accommodated in the transmission sleeve 313, where the first rod body 311 and the second rod body 312 are respectively disposed on the transmission sleeve 313 in a penetrating manner and respectively abut against two ends of the compression spring 314. As can be appreciated, two ends of the connecting sleeve 313 are respectively provided with a penetrating hole for the first rod 311 and the second rod 312 to penetrate; preferably, as shown in fig. 1 and fig. 2, the first rod body 311 and the second rod body 312 are respectively provided with an abutment boss, each abutment boss is respectively located in the corresponding transmission sleeve 313 and has a diameter larger than that of the corresponding rod body penetrating hole, and both abutment bosses are limited in the barrel cavity of the transmission sleeve 313, so that the first rod body 311 and the second rod body 312 can be prevented from being separated from the transmission sleeve 313, and the reliability of work and the stability of structure are ensured. The diameter of the abutting boss is the same as the inner diameter of the transmission sleeve 313, the abutting boss is slidably arranged in the transmission sleeve 313, so that the stability of relative movement between the first rod body 311 and the second rod body 312 and the transmission sleeve 313 can be ensured, and the centering of the valve plate 2 and the valve seat 11 is prevented from being influenced due to shaking of the rod bodies. In another embodiment, one of the first rod 311 and the second rod 312 may be integrally connected to the transmission sleeve 313.
Based on the structure of the transmission connecting rod 3, the compression spring 314 is arranged, so that enough sealing compression force can be provided, and the sealing effect is ensured; the situation that the sliding blocks 21 of the valve plates 2 on two sides are in contact with the wedge-shaped structure asynchronously due to errors in manufacturing, assembling and the like, so that sealing compaction forces generated by the valve plates 2 on two sides are unequal, and even a certain valve plate 2 on one side cannot achieve the required sealing compaction force can be effectively avoided; can compensate the abrasion of the sealing surface and the hinge part, and the like, and has reliable equipment and long service life.
Further, as shown in fig. 1 and fig. 2, the transmission connecting rod 3 further includes a transmission section, one end of the transmission section is hinged to the output end of the actuating mechanism, and the other end of the transmission section is connected with the corresponding mounting section 31 in an oblique crossing manner, so as to ensure the driving and compacting effects on the rod body of the mounting section 31.
As a preferred embodiment, the above-mentioned coupling section may be hinged to the mounting section 31, or the above-mentioned first rod body 311 may include an outer rod portion located outside the coupling sleeve 313 and a piston portion located inside the coupling sleeve 313, the outer rod portion being hinged to the piston portion and fixedly connected to the coupling section. Based on the structure, the transmission effect and the compression effect on the valve plate 2 are ensured, errors caused by manufacturing, assembling and the like, abrasion of a sealing surface and a hinge part and the like can be further compensated, and the working reliability and the sealing effect are ensured.
As shown in fig. 3 and 4, the wedge structure includes two wedges 12, the two wedges 12 are arranged on two sides of the valve port axis of the corresponding valve seat 11, two sliding blocks 21 on each valve plate 2 are correspondingly arranged, and in the valve closing state, the two sliding blocks 21 on each valve plate 2 are respectively abutted against the two corresponding wedges 12. The structure can ensure the compression effect on the valve plate 2, and meanwhile, the two wedges 12 are staggered, so that the fluid circulation during valve opening is not influenced.
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. 1-2, the actuator preferably includes a valve frame 42 fixedly mounted on the valve body 1, a valve rod 43 movably mounted on the valve frame 42 and connected to the transmission mechanism, and an actuator driving unit 41 for driving the valve rod 43 to move in its own axial direction. The execution driving unit 41 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 41 includes a hydraulic cylinder mounted on the valve frame 42 and having an output shaft coaxially connected to the valve rod 43. Further, as shown in fig. 1 and 2, the valve rod 43 is provided with a limiting block 44, and the valve frame 42 is provided with a valve closing limiting block 46 and a valve opening limiting block 45, respectively, so that the damage to the devices such as the connecting rod, the valve body 1, the compression spring 314, etc. caused by the excessive action of the driving unit 41 can be avoided.
The working process of the bidirectional sealing gate valve with the double valve plates 2 is approximately as follows:
when the valve is closed, the actuating mechanism drives the valve plates 2 on two sides to move downwards through the connecting rod until the wedge-shaped sliding blocks 21 on the back surfaces of the valve plates 2 are completely attached to the wedge blocks 12 of the wedge-shaped structure, and at the moment, the sealing surfaces of the valve plates 2 and the valve seat 11 are also attached in a centering way. When the valve rod 43 moves further downwards, the compression spring 314 is compressed, the valve plate 2 is further pressed downwards, and the sliding block 21 is matched with the inclined plane of the wedge block 12 to generate a compression force perpendicular to the sealing surface of the valve plate 2, so that the sealing effect is achieved. When the valve is opened, the valve rod 43 moves upwards, the compression spring 314 is gradually released, the sealing compression force is removed, and the valve plate 2 is continuously lifted, 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 (5)
1. The utility model provides a take bi-directional seal gate valve of double valve board, includes the valve body, the valve body has the valve chamber and is connected with actuating mechanism, its characterized in that: two valve seats are oppositely arranged on the valve body, two valve plates and two groups of wedge structures are correspondingly arranged in the valve chamber, inclined planes of each group of wedge structures are opposite to the corresponding valve seats so as to enclose a wedge space, and sliding blocks matched with the inclined planes of the corresponding wedge structures are arranged on non-sealing plate surfaces of the two valve plates; the two valve plates are connected with the executing mechanism so as to have a valve opening state and a valve closing state, in the valve closing state, the valve plates are attached to the corresponding valve seats, the sliding blocks are abutted to the corresponding wedge-shaped structure inclined planes, and in the valve opening state, the valve plates are separated from the corresponding valve seats;
each valve plate is connected with the execution mechanism through a transmission connecting rod, the two transmission connecting rods are hinged with the output end of the execution mechanism, and the axial direction of a hinged shaft is perpendicular to the linear driving direction of the execution mechanism and the axial direction of a valve port of the valve seat;
the two transmission connecting rods are connected into a whole through a synchronous connecting rod, the axis of the synchronous connecting rod is parallel to the axis of the valve port of the valve seat, and the synchronous connecting rod and the two transmission connecting rods are spliced into a three-fork connecting rod;
the transmission connecting rod comprises a mounting section which is fixedly connected with the valve plate and the axis of which is parallel to the linear driving direction of the actuating mechanism, the mounting section comprises a first rod body, a second rod body, a transmission sleeve and a compression spring which is accommodated in the transmission sleeve, and the first rod body and the second rod body are respectively arranged on the transmission sleeve in a penetrating manner and respectively abutted with two ends of the compression spring;
the transmission connecting rod further comprises a transmission section, one end of the transmission section is hinged with the output end of the actuating mechanism, and the other end of the transmission section is in oblique connection with the corresponding installation section; the first rod body comprises an outer rod portion positioned outside the transmission sleeve and a piston portion positioned in the transmission sleeve, and the outer rod portion is hinged with the piston portion and fixedly connected with the transmission section.
2. The bi-directional sealing gate valve with dual valve plates of claim 1, wherein: the first rod body and the second rod body are respectively provided with an abutting boss, and each abutting boss is respectively positioned in the corresponding transmission sleeve and has a diameter larger than the diameter of the corresponding rod body penetrating hole.
3. The bi-directional sealing gate valve with dual valve plates of claim 1, wherein: the wedge-shaped structure comprises two wedges which are respectively arranged at two sides of the axis of the valve port of the corresponding valve seat, two sliding blocks on each valve plate are correspondingly arranged, and in the valve closing state, the two sliding blocks on each valve plate are respectively abutted with the corresponding two wedges.
4. The bi-directional sealing gate valve with dual valve plates 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 two valve plates, and an actuating drive unit for driving the valve rod to move along the axial direction of the valve rod.
5. The bi-directional sealing gate valve with dual valve plates as defined in claim 4, wherein: the valve rod is provided with a limiting block, and the valve frame is respectively provided with a valve closing limiting baffle and a valve opening limiting baffle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811203143.7A CN109114241B (en) | 2018-10-16 | 2018-10-16 | Two-way sealing gate valve with double valve plates |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811203143.7A CN109114241B (en) | 2018-10-16 | 2018-10-16 | Two-way sealing gate valve with double valve plates |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109114241A CN109114241A (en) | 2019-01-01 |
| CN109114241B true CN109114241B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811203143.7A Active CN109114241B (en) | 2018-10-16 | 2018-10-16 | Two-way sealing gate valve with double valve plates |
Country Status (1)
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| CN (1) | CN109114241B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111173951B (en) * | 2020-02-04 | 2021-07-20 | 浙江中昊阀门有限公司 | Gate valve |
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|---|---|---|---|---|
| GB191117885A (en) * | 1911-08-05 | 1912-03-21 | Carl Georg Kleinschmidt | Improvements in Sliding Stop Valves. |
| FR2315648A1 (en) * | 1975-06-23 | 1977-01-21 | Bouvier Ateliers | Flow blocking valve for aggressive fluids - has valve closure element actuated by toggle levers for hermetic closing |
| US4566671A (en) * | 1983-11-14 | 1986-01-28 | John Beson | Gate valve having a secondary seal |
| CN201262243Y (en) * | 2008-08-14 | 2009-06-24 | 闵和清 | Telescopic lower wedge hydraulic sluice valve |
| CN201363433Y (en) * | 2009-01-21 | 2009-12-16 | 河南开封高压阀门有限公司 | Reverse-wedge expansion double disc parallel gate valve |
| JP2013204681A (en) * | 2012-03-28 | 2013-10-07 | Toho Gas Co Ltd | Gate valve |
| CN102678955A (en) * | 2012-05-17 | 2012-09-19 | 东莞宏威数码机械有限公司 | Dual-baffle vacuum gate valve device |
| CN106481833A (en) * | 2015-08-25 | 2017-03-08 | 中国石油天然气集团公司 | A kind of high temperature cut-off valve hard sealing structure |
| CN207393992U (en) * | 2017-11-10 | 2018-05-22 | 四川赛尔阀门制造有限公司 | A kind of recovery type double disc expansion sluice valve |
| CN207848462U (en) * | 2017-12-29 | 2018-09-11 | 浙江挺宇流体设备股份有限公司 | A kind of novel medium voltage parallel double-flashboard gate valve |
| CN208935432U (en) * | 2018-10-16 | 2019-06-04 | 中冶南方工程技术有限公司 | Two way seal gate valve with double valve plates |
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