CN113898742B - Lower-expansion type discharging valve - Google Patents
Lower-expansion type discharging valve Download PDFInfo
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- CN113898742B CN113898742B CN202111214783.XA CN202111214783A CN113898742B CN 113898742 B CN113898742 B CN 113898742B CN 202111214783 A CN202111214783 A CN 202111214783A CN 113898742 B CN113898742 B CN 113898742B
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/14—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with ball-shaped valve member
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0245—Construction of housing; Use of materials therefor of lift valves with ball-shaped valve 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention discloses a lower-expansion type discharge valve, which comprises: the valve body comprises a first valve cavity, a second valve cavity and a third valve cavity, and the first valve cavity, the second valve cavity and the third valve cavity are communicated; the guide rod is positioned in the third valve cavity, and one end of the guide rod extends out from the end part of the third valve cavity and is connected with the driving mechanism of the discharge valve; the first valve core assembly is positioned in the first valve cavity and hinged with the guide rod; and the second valve core assembly is positioned in the second valve cavity and hinged with the guide rod. The double-valve core assembly is arranged, and the upstream and downstream material openings can be sealed, so that a good material mixing prevention effect is obtained; according to the discharging valve, the first valve cavity and the second valve cavity are both arranged to be horn-shaped, the surface of the valve core is arranged to be an arc surface, the valve core is connected with the valve rod in a clearance fit mode, and when the discharging valve is operated, the valve core can be self-aligned to rapidly and stably close the valve cavity port.
Description
Technical Field
The invention belongs to the technical field of discharge valves, and particularly relates to a lower-expansion type discharge valve.
Background
The discharging valve is a valve for discharging as the name implies, and is mainly arranged at the bottoms of a reaction kettle, an oil tank, a food tank, a chemical tank and the like to play a role in discharging and sampling. For many chemical enterprises, a reaction kettle is provided with materials for reaction, and the materials are required to be discharged after the reaction.
The discharging valve is an important part in the structure of the reaction kettle, and plays a role in controlling the chemical materials to perform airtight pressurization reaction in the reaction kettle and correctly opening a discharging port to discharge the materials after the reaction is finished, and the complete mixing and complete reaction of the materials in the reaction kettle are not affected. However, more and more chemical plants are required to enter the next reaction kettle for reaction, and sometimes, the reaction kettle and the reaction kettle cannot be mixed with each other (especially gas substances). Therefore, the structure and performance of the designed discharge valve not only influence the operation performance of the reaction kettle, but also directly influence the chemical reaction efficiency and the chemical product quality of the whole production line.
The materials in the reaction kettle need to fully react, dead angles and effusion are avoided, at the moment, a discharge valve is needed, and some materials are reacted to be used as primary synthetic materials and enter other kettles to react again, so that the upstream and downstream of the discharge valve are needed to be sealed.
The prior art discharge valve is generally an upward expansion type or a downward expansion type discharge valve, but the upward expansion type or the downward expansion type discharge valve only seals an upstream inlet of the valve, so that a good material mixing prevention effect is difficult to achieve.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a downward-expansion type discharging valve which is mainly applied to devices which are arranged on a chemical reaction kettle, an oil tank, a food tank, a chemical tank and the like and need bottom discharging and sampling. The lower expansion type discharging valve can seal the upstream and downstream material openings, and has a good material mixing prevention effect. Especially for gaseous reactant material, the baiting valve plays fine guard action to the environment that both has the medium pressure in upper and lower reaches, and sealed effect is more obvious than single core valve.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
A lower spread discharge valve, comprising:
The valve body comprises a first valve cavity, a second valve cavity and a third valve cavity, and the first valve cavity, the second valve cavity and the third valve cavity are communicated; the guide rod is positioned in the third valve cavity, and one end of the guide rod extends out from the end part of the third valve cavity and is connected with the discharge valve driving mechanism; the first valve core assembly is positioned in the first valve cavity and hinged with the guide rod; and the second valve core assembly is positioned in the second valve cavity and hinged with the guide rod.
The driving mechanism is used for driving the guide rod to move, and the guide rod drives the first valve core assembly and the second valve core assembly to open or close the first valve cavity port and the second valve cavity port, so that the upstream reaction kettle and the downstream reaction kettle are subjected to bidirectional sealing, and a better sealing effect is obtained.
Further, the first valve core assembly comprises a first valve core and a first valve rod, the first valve core is arranged at the end part of the first valve cavity, the first valve rod is arranged in the first valve cavity, one end of the first valve rod is connected with the first valve core, and the other end of the first valve rod is hinged with the guide rod. When the driving mechanism drives the guide rod to move towards the valve body, the guide rod drives the first valve rod and the first valve core to move towards the port of the first valve cavity until the first valve core closes the port of the first valve cavity.
Preferably, the surface of the first valve core is an arc-shaped surface, the first valve core is provided with a mounting hole, the first valve rod is inserted into the mounting hole to be connected with the first valve core in a clearance fit mode, and the diameter of the end part of the first valve cavity is smaller than that of the first valve cavity and is similar to a horn mouth shape. The first valve core and the first valve rod can mutually move within a certain limit, and when the guide rod drives the first valve rod and the first valve core to move towards the first valve cavity port, the first valve core can realize self-alignment so as to quickly and stably close the first valve cavity port because the inside of the first valve cavity is in a horn mouth shape.
Further, the second valve core assembly comprises a second valve core and a second valve rod, the second valve core is arranged at the end part of the second valve cavity, the second valve rod is arranged in the second valve cavity, one end of the second valve rod is connected with the second valve core, and the other end of the second valve rod is hinged with the guide rod. When the driving mechanism drives the guide rod to move towards the valve body, the guide rod drives the second valve rod and the second valve core to move towards the port of the second valve cavity until the second valve core closes the port of the second valve cavity.
Preferably, the surface of the second valve core is an arc surface, the second valve core is provided with a mounting hole, the second valve rod is inserted into the mounting hole and connected with the second valve core in a clearance fit mode, and the diameter of the end part of the second valve cavity is smaller than that of the first valve cavity and is similar to a horn mouth shape. The second valve core and the second valve rod can mutually move within a certain limit, and when the guide rod drives the second valve rod and the second valve core to move towards the second valve cavity port, the second valve core can realize self-alignment so as to quickly and stably close the second valve cavity port because the inside of the second valve cavity is in a horn mouth shape.
Alternatively, the first valve core and the second valve core may be spherical.
Preferably, the guide rod is provided with a pressing member, and the first valve core assembly and the second valve core assembly are rotationally connected with the guide rod through the pressing member, so that the first valve rod and the second valve rod are connected with the guide rod.
Preferably, a guide sleeve is arranged in the third valve cavity of the valve body, and the guide sleeve is sleeved on the guide rod. The guide sleeve plays a guiding role on the guide rod.
Preferably, the central axis of the first valve cavity and the central axis of the second valve cavity are symmetrical to each other with the path axis of the guide rod. Therefore, each part is uniformly stressed, and the service life is longer.
Preferably, a packing is arranged in a third valve cavity of the valve body, a packing pressing block is arranged at the end part of the third valve cavity, and the packing pressing block seals the packing in a third valve cavity channel of the valve body. By arranging the packing, the sealing performance of the Y-shaped valve body can be improved, and the packing pressing block is used for ensuring that the packing is stably positioned in a first port channel of the Y-shaped valve body.
Further, the valve body further comprises a first valve seat and a second valve seat, the first valve seat is fixedly connected with the end part of the first valve cavity, and the second valve seat is fixedly connected with the end part of the second valve cavity. The first valve seat is connected with the end part of the first valve cavity by adopting a kettle bottom flange, and the second valve seat is connected with the end part of the second valve cavity by adopting a pipeline flange.
Optionally, according to different working conditions, for example, when the temperature is higher, the valve seat and the valve core are made of metal materials so as to form a metal sealing pair. But is not limited to a metal material, and may be other materials.
When the invention is arranged in a chemical reaction kettle, the invention plays roles of controlling chemical materials to carry out airtight pressurization reaction in the reaction kettle and correctly opening a discharge port to discharge the materials after the reaction is finished, and the complete mixing and complete reaction of the materials in the reaction kettle are not affected. Under the condition that gas can be generated in the downstream reaction kettle under the working condition, the second valve cavity port is closed, so that the gas in the downstream reaction kettle can be prevented from entering the valve cavity to generate pressure on the first valve core component, and if the gas generated in the downstream reaction kettle is corrosive, the damage of the corrosive gas to the discharge valve can be reduced. Therefore, the pressure of the first valve core assembly to the end part of the first valve cavity can be reduced, so that a better sealing effect is achieved, and the service life is prolonged.
If one of the first valve core component and the second valve core component is damaged and the other valve core component is intact, the discharge valve can still be used as a common discharge valve under the condition of low working condition requirements.
By adopting the technical scheme, the invention has the following advantages and positive effects compared with the prior art:
(1) The double-valve-core assembly is arranged, ports of the first valve cavity and the second valve cavity of the valve body can be sealed, so that upstream and downstream material ports can be sealed in a two-way manner, and a good material mixing prevention effect is obtained;
(2) The first valve cavity and the second valve cavity of the valve body are both arranged into a horn mouth shape, the valve core is arranged into a sphere shape, the valve core and the valve rod are connected in a clearance fit mode, and when the valve is operated, the valve core can be self-aligned to realize quick and stable closing of the flow passage port.
Drawings
The invention is described in further detail below with reference to the attached drawing figures, wherein:
FIG. 1 is a schematic diagram showing the open state of a lower expansion type discharge valve according to the present invention;
FIG. 2 is a schematic diagram showing a closed state of a lower expansion type discharge valve according to the present invention;
reference numerals illustrate:
1: a valve body; 101: a first valve chamber; 102: a second valve chamber; 103: a third valve chamber; 2: a guide rod; 3: a first valve seat; 4: a first valve core; 5: a first valve stem; 6: a second valve seat; 7: a second valve core; 8: a second valve stem; 9: a kettle bottom flange; 10: a pipe flange; 11: a guide sleeve; 12: a filler; 13: a filler briquetting; 14: and a pressing member.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific examples. Advantages and features of the invention will become more apparent from the following description and from the claims. It is noted that the drawings are in a very simplified form and utilize non-precise ratios, and are intended to facilitate a convenient, clear, description of the embodiments of the invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.
The core of the invention is to provide a lower expansion type discharge valve, which comprises: the valve body 1 comprises a first valve cavity 101, a second valve cavity 102, a third valve cavity 103, and the first valve cavity 101, the second valve cavity 102 and the third valve cavity 103 are communicated; the guide rod 2 is positioned in the third valve cavity 103, and one end of the guide rod 2 extends out from the end part of the third valve cavity 103 and is connected with the discharge valve driving mechanism; the first valve core assembly is positioned in the first valve cavity 101 and hinged with the guide rod 2; the second valve core assembly is positioned in the second valve cavity 102 and hinged with the guide rod 2.
The driving mechanism is used for driving the guide rod 2 to move, and the guide rod 2 drives the first valve core assembly and the second valve core assembly to open or close the port of the first valve cavity 101 and the port of the second valve cavity 102, so that the upstream reaction kettle and the downstream reaction kettle are subjected to bidirectional sealing, and a better sealing effect is obtained.
Further, the first valve core assembly comprises a first valve core 4 and a first valve rod 5, the first valve core 4 is arranged at the end part of the first valve cavity 101, the first valve rod 5 is arranged in the first valve cavity 101, one end of the first valve rod 5 is connected with the first valve core 4, and the other end of the first valve rod 5 is hinged with the guide rod 2. When the driving mechanism drives the guide rod 2 to move into the valve body 1, the guide rod 2 drives the first valve rod 5 and the first valve core 4 to move towards the port of the first valve cavity 101 until the first valve core 4 closes the port of the first valve cavity 101.
Preferably, the surface of the first valve core 4 is an arc surface, the first valve core 4 is provided with a mounting hole, the first valve rod 5 is inserted into the mounting hole to be connected with the first valve core 4 in a clearance fit mode, and the diameter of the end part of the first valve cavity is smaller than that of the first valve cavity, and the valve is similar to a horn mouth type. The first valve core 4 and the first valve rod 5 can mutually move within a certain limit, and when the guide rod 2 drives the first valve rod 5 and the first valve core 4 to move towards the port of the first valve cavity 101, the first valve core 4 can realize self-alignment so as to quickly and stably close the port of the first valve cavity 101 because the inside of the first valve cavity 101 is in a horn mouth shape.
Further, the second valve core assembly comprises a second valve core 7 and a second valve rod 8, the second valve core 7 is arranged at the end part of the second valve cavity 102, the second valve rod 8 is arranged in the second valve cavity 102, one end of the second valve rod 8 is connected with the second valve core 7, and the other end of the second valve rod 8 is hinged with the guide rod 2. When the driving mechanism drives the guide rod 2 to move into the valve body 1, the guide rod 2 drives the second valve rod 8 and the second valve core 7 to move towards the port of the second valve cavity 102 until the second valve core 7 closes the port of the second valve cavity 102.
Preferably, the surface of the second valve core 7 is an arc surface, the second valve core 7 is provided with a mounting hole, the second valve rod 8 is inserted into the mounting hole to be connected with the second valve core 4 in a clearance fit mode, and the diameter of the end part of the second valve cavity is smaller than that of the first valve cavity and is similar to a horn mouth shape. The second valve core 7 and the second valve rod 8 can mutually move within a certain limit, and when the guide rod 2 drives the second valve rod 8 and the second valve core 7 to move towards the port of the second valve cavity 102, the second valve core 7 can realize self-alignment so as to quickly and stably close the port of the second valve cavity 101 because the inside of the second valve cavity 102 is in a horn mouth shape.
Optionally, the first spool 4 and the second spool 7 are spherical.
Preferably, the guide rod 2 is provided with a pressing member 14, and the first valve rod 5 and the second valve rod 8 are rotatably connected with the guide rod 2 through the pressing member 14, so that the first valve rod 5 and the second valve rod 8 are connected with the guide rod 2.
Preferably, a guide sleeve 11 is arranged in the valve body third valve cavity 103, and the guide sleeve 11 is sleeved on the guide rod 2. The guide sleeve 11 plays a role in guiding the guide rod 2.
Preferably, the central axis of the first valve chamber 101 and the central axis of the second valve chamber 102 are symmetrical to each other with respect to the path axis along which the guide rod 2 moves. Therefore, each part is uniformly stressed, and the service life is longer.
Preferably, the third valve cavity 103 of the valve body is internally provided with a filler 12, the port of the third valve cavity 103 is provided with a filler pressing block 13, and the filler pressing block 13 seals the filler 12 in a channel of the third valve cavity 103 of the valve body. By arranging the packing 12, the sealing performance of the valve body 1 can be improved, and the packing pressing block 13 is used for ensuring that the packing 12 is stably positioned in the third valve cavity 103 of the valve body.
Further, a first valve cavity 101 port of the valve body 1 is provided with a first valve seat 3, a second valve cavity 102 port of the valve body 1 is provided with a second valve seat 6, and the first valve seat 3 and the second valve seat 6 are fixedly connected with the first valve cavity port and the second valve cavity port respectively through flanges. The first valve seat is connected with the first valve cavity port through a kettle bottom flange, and the second valve seat is connected with the second valve cavity port through a pipeline flange.
Alternatively, the first valve seat 3 and the second valve seat 6 are metal seal pairs. Depending on the operating conditions, for example, when the temperature is high, a metal sealing pair can be used.
When the invention is arranged in a chemical reaction kettle, the invention plays roles of controlling chemical materials to carry out airtight pressurization reaction in the reaction kettle and correctly opening a discharge port to discharge the materials after the reaction is finished, and the complete mixing and complete reaction of the materials in the reaction kettle are not affected. Under the condition that gas can be generated in the downstream reaction kettle under the working condition, the port of the second valve cavity 102 is closed, so that the gas in the downstream reaction kettle can be prevented from entering the valve cavity to generate pressure on the first valve core component, and if the gas generated in the downstream reaction kettle is corrosive, the damage of the corrosive gas to the discharge valve can be reduced. So that the pressure of the first valve element assembly to the end of the first valve chamber 101 can be reduced to obtain a better sealing effect and to prolong the service life.
If one of the first valve core component and the second valve core component is damaged and the other valve core component is intact, the discharge valve can still be used as a common discharge valve under the condition of low working condition requirements.
Referring to fig. 1 and 2, fig. 1 is a schematic diagram of an open state of a lower expansion type discharge valve according to the present invention, and fig. 2 is a schematic diagram of a closed state of the lower expansion type discharge valve according to the present invention.
The working process of the invention is further described below:
when the discharge valve needs to be closed, the driving mechanism drives the guide rod 2 to move towards the inside of the valve body 1, the guide rod 2 drives the first valve rod 5 and the first valve core 4 to move towards the port of the first valve cavity 101, and simultaneously drives the second valve rod 8 and the second valve core 7 to move towards the port of the second valve cavity 102, namely, the upstream port and the downstream port of the valve body are sealed at the same time.
Because the first valve core 4 is spherical, the first valve core 4 and the first valve rod 5 are connected in a clearance fit mode, the first valve core 4 and the first valve rod 5 can mutually move within a certain limit, and the first valve rod 5 is hinged with the guide rod 2. When the guide rod 2 drives the first valve rod 5 and the first valve core 4 to move towards the port of the first valve cavity 101, the first valve core 4 can realize self-alignment so as to stably close the port of the first valve cavity 101 because the first valve cavity is in a horn mouth shape. Similarly, the second valve element 7 can be self-aligned to quickly and stably close the second valve cavity 102.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is within the scope of the appended claims and their equivalents to fall within the scope of the invention.
Claims (6)
1. A lower spread discharge valve, comprising:
the valve body comprises a first valve cavity, a second valve cavity and a third valve cavity, and the first valve cavity, the second valve cavity and the third valve cavity are communicated;
The guide rod is positioned in the third valve cavity, and one end of the guide rod extends out from the end part of the third valve cavity and is connected with the driving mechanism of the discharge valve;
the first valve core assembly is positioned in the first valve cavity and hinged with the guide rod, the first valve core assembly comprises a first valve core and a first valve rod, the first valve core is arranged at the end part of the first valve cavity, the first valve rod is arranged in the first valve cavity, one end of the first valve rod is connected with the first valve core, and the other end of the first valve rod is hinged with the guide rod; the first valve core is spherical, the first valve rod is connected with the first valve core in a clearance fit mode, and the diameter of the end part of the first valve cavity is smaller than that of the first valve cavity main body;
The second valve core assembly is positioned in the second valve cavity and hinged with the guide rod, the second valve core assembly comprises a second valve core and a second valve rod, the second valve core is arranged at the end part of the second valve cavity, the second valve rod is arranged in the second valve cavity, one end of the second valve rod is connected with the second valve core, and the other end of the second valve rod is hinged with the guide rod; the second valve core is spherical, the second valve rod is connected with the second valve core in a clearance fit mode, and the diameter of the end part of the first valve cavity is smaller than that of the first valve cavity main body;
The first valve cavity and the second valve cavity are both arranged in a horn mouth shape.
2. The down-spread type discharge valve of claim 1, wherein a pressing member is provided on the guide rod, and the first valve core assembly and the second valve core assembly are rotatably connected with the guide rod through the pressing member.
3. The down-spread type discharge valve according to claim 1, wherein a guide sleeve is arranged in the third valve cavity, and the guide sleeve is sleeved on the guide rod.
4. The down-spread discharge valve of claim 1, wherein a packing is disposed in the third valve chamber, a packing block is disposed at an end of the third valve chamber, and the packing block seals the packing in a third valve chamber passage of the valve body.
5. The down-spread type discharge valve of claim 1, wherein the valve body further comprises a first valve seat and a second valve seat, the first valve seat is fixedly connected with the end of the first valve cavity, and the second valve seat is fixedly connected with the end of the second valve cavity.
6. The down-draw type blow valve of claim 5, wherein the valve spool and the valve seat are metallic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111214783.XA CN113898742B (en) | 2021-10-19 | 2021-10-19 | Lower-expansion type discharging valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111214783.XA CN113898742B (en) | 2021-10-19 | 2021-10-19 | Lower-expansion type discharging valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113898742A CN113898742A (en) | 2022-01-07 |
| CN113898742B true CN113898742B (en) | 2024-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111214783.XA Active CN113898742B (en) | 2021-10-19 | 2021-10-19 | Lower-expansion type discharging valve |
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| CN (1) | CN113898742B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202371196U (en) * | 2011-12-26 | 2012-08-08 | 浙江上一阀门有限公司 | Flat-plate gate valve |
| CN103775666A (en) * | 2013-12-30 | 2014-05-07 | 宁波市天基隆智控技术有限公司 | Gate valve |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2699986Y (en) * | 2004-03-22 | 2005-05-18 | 田克俭 | Extension upward type pneumatic dumping valve with set aside cylinder |
| CN206017826U (en) * | 2016-08-25 | 2017-03-15 | 晟福（天津）流体自动控制设备有限公司 | parallel double-flashboard gate valve |
| CN206600484U (en) * | 2017-02-15 | 2017-10-31 | 福建省兴达阀门制造有限公司 | One kind is without friction sealed gate valve |
-
2021
- 2021-10-19 CN CN202111214783.XA patent/CN113898742B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202371196U (en) * | 2011-12-26 | 2012-08-08 | 浙江上一阀门有限公司 | Flat-plate gate valve |
| CN103775666A (en) * | 2013-12-30 | 2014-05-07 | 宁波市天基隆智控技术有限公司 | Gate valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113898742A (en) | 2022-01-07 |
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