CN108730546B - Double-gate valve capable of forcing valve disc to rotate - Google Patents
Double-gate valve capable of forcing valve disc to rotate Download PDFInfo
- Publication number
- CN108730546B CN108730546B CN201810974847.8A CN201810974847A CN108730546B CN 108730546 B CN108730546 B CN 108730546B CN 201810974847 A CN201810974847 A CN 201810974847A CN 108730546 B CN108730546 B CN 108730546B
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- valve
- valve disc
- disc
- rack
- cover
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- 230000001360 synchronised effect Effects 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims description 19
- 238000007789 sealing Methods 0.000 claims description 14
- 238000005299 abrasion Methods 0.000 abstract description 8
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre valves
-
- 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
-
- 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
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a double-gate valve capable of forcing a valve disc to rotate, which consists of a first valve body, a reciprocating push-pull rod, a valve cover, valve discs, valve disc supports, a synchronous plate, springs and the like. The two valve discs are provided with tooth surfaces, racks are arranged on two sides in the first valve body, and the tooth surfaces of the valve discs are forced to contact with the racks when the valve discs slide in a reciprocating offset mode so as to force the valve discs to sit for rotary motion. Due to the adoption of the technical scheme, the double-valve disc gate valve is stable in operation, uniform in abrasion and long in service life.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a double gate valve for forcing a valve disc to rotate.
Background
The double-valve disc gate valve is mainly used for a valve on a high-low temperature fluid passage with powder as a medium and is widely applied to industries such as electric power, chemical industry and the like.
The basic structure of the prior art double-valve disc gate valve is a valve cavity formed by a valve body and two valve covers, and the valve covers are provided with valve inlets and valve outlets; the two valve discs are arranged at the tail end of the valve rod, are tensioned by springs, can move independently and are tightly attached to valve covers at two sides; the valve disc drives the valve seat to slide back and forth against the sealing surface by the valve rod, so as to open or close the valve. Because the two valve discs are respectively and independently arranged, the degree of freedom is larger, the valve discs can slide linearly or can rotate, the movement states of the two brake plates are inconsistent, and as a result, the valve discs on the two sides and the valve cover are not uniformly worn under different wear conditions; some valve discs can be damaged on one side, and sealing cannot be achieved; finally, fixed wear lines can be formed on the valve disc and the sealing cover, the friction coefficient of the valve disc and the sealing cover is increased, the running resistance of the valve is increased, and even the valve cannot be opened or closed in place, and the valve is damaged rapidly.
Disclosure of Invention
In view of the above, the present invention aims to provide a double-disc gate valve with smoother running characteristics, more uniform wear and longer service life.
The invention solves the technical problems by the following technical means: a double gate valve for forcing a valve disc to rotate mainly comprises a first valve body, a reciprocating push-pull rod, a valve cover I, a valve cover II, a valve disc support, a spring, a synchronizing plate, a valve disc I and a valve disc II; the first valve body, the first valve cover and the second valve cover form a valve cavity, a left rack and a right rack are arranged on two sides of the inner wall of the first valve body, and an inlet and an outlet are formed in the valve cover and form a fluid channel; the valve disc I and the valve disc II are arranged on the valve disc support, tooth surfaces are arranged on the periphery of the valve disc, and the valve disc is tightly attached to sealing surfaces of corresponding valve covers on two sides under the tensioning action of the spring; the valve disc support is arranged at the tail end of the reciprocating push-pull rod, the reciprocating push-pull rod drives the valve disc support to reciprocate, the valve disc support is provided with an eccentric contact I and an eccentric contact II, when the valve disc closes the fluid channel, the eccentric contact I pushes the valve disc I to deviate, the forced tooth surface contacts with the left rack to force the valve disc I to do rotary motion, and when the valve disc opens the fluid channel, the eccentric contact II pushes the valve disc II to deviate, and the forced tooth surface contacts with the right rack to force the valve disc II to do rotary motion in the same direction; the synchronizing plate is arranged between the first valve disc and the second valve disc and used for ensuring that the movement of the first valve disc and the movement of the second valve disc are kept synchronous.
Further, the left rack and the right rack are parallel to the reciprocating push-pull rod.
Further, the tooth surface is consistent with the tooth shapes of the left rack and the right rack, and the tooth shapes of the tooth surface, the left rack and the right rack are one of triangular teeth, rectangular teeth, trapezoidal teeth and involute teeth.
A double gate valve for forcing a valve disc to rotate mainly comprises a second valve body, a reciprocating swing rod, a valve cover III, a valve cover IV, a valve disc support, a spring, a synchronizing plate, a valve disc I and a valve disc II; the second valve body, the third valve cover and the fourth valve cover form a valve cavity, a left arc-shaped rack and a right arc-shaped rack are arranged on two sides of the inner wall of the second valve body, and an inlet and an outlet are arranged on the valve cover and form a fluid channel; the valve disc I and the valve disc II are arranged on the valve disc support, tooth surfaces are arranged on the periphery of the valve disc, and the valve disc is tightly attached to sealing surfaces of corresponding valve covers on two sides under the tensioning action of the spring; the valve disc support is arranged at the tail end of the reciprocating swing rod, the reciprocating swing rod drives the valve disc support to swing reciprocally around the shaft, the valve disc support is provided with an eccentric contact I and an eccentric contact II, so that when the valve disc closes a fluid channel, the eccentric contact I pushes the valve disc I to deviate, a forced tooth surface contacts with a left arc-shaped rack to force the valve disc I to do rotary motion, and when the valve disc opens the fluid channel, the eccentric contact II pushes the valve disc II to deviate, and the forced tooth surface contacts with a right arc-shaped rack to force the valve disc II to do rotary motion in the same direction; the synchronizing plate is arranged between the first valve disc and the second valve disc and used for ensuring that the movement of the first valve disc and the movement of the second valve disc are kept synchronous.
Further, the tooth surface is consistent with the tooth shapes of the left arc-shaped rack and the right arc-shaped rack, and the tooth surfaces of the tooth surface, the left arc-shaped rack and the right arc-shaped rack are one of triangular teeth, rectangular teeth, trapezoidal teeth and involute teeth.
The invention has the beneficial effects that: the movement of the forced valve disc is formed by combining translation and rotation, and the forced valve disc synchronously moves, the valve disc and the valve cover are subjected to counter-lapping, and abrasion lines are uniformly distributed on a friction surface, so that the service life of the valve is prolonged; and because the abrasion between the valve disc and the valve cover is uniform, the friction surface can keep higher smoothness, the friction force is lower, the running resistance of the gate valve is small, and the opening and closing are more reliable and stable.
Drawings
Fig. 1 is a schematic front view of an embodiment of the present invention.
FIG. 2 is a schematic side view of an embodiment of the present invention with the valve closed.
FIG. 3 is a schematic side view of an embodiment of the present invention illustrating the opening of a valve.
Fig. 4 is a schematic diagram of a front view structure according to a second embodiment of the present invention.
Fig. 5 is a schematic top view of a valve according to a second embodiment of the present invention.
Fig. 6 is a schematic top view of a valve according to a second embodiment of the invention.
Detailed Description
The invention will be described in detail below with reference to the attached drawings:
example 1
As shown in fig. 1-3, a double gate valve for forcing a valve disc to rotate mainly comprises a first valve body 1, a reciprocating push-pull rod 2, a valve cover I4A, a valve cover II 4B, a valve disc support 5, a spring 6, a synchronizing plate 7, a valve disc I8A and a valve disc II 8B; the first valve body 1, the first valve cover 4A and the second valve cover 4B form a valve cavity, a left rack 11A and a right rack 11B are arranged on two sides of the inner wall of the first valve body 1, and an inlet 31A and an outlet 31B are arranged on the valve cover and form a fluid channel; the first valve disc 8A and the second valve disc 8B are arranged on the valve disc support 5, tooth surfaces 12 are arranged on the periphery of the valve disc, and the valve disc is tightly attached to sealing surfaces of corresponding valve covers on two sides under the tensioning action of the spring 6; the valve disc support 5 is arranged at the tail end of the reciprocating push-pull rod 2, the reciprocating push-pull rod 2 drives the valve disc support 5 to reciprocate, the valve disc support 5 is provided with an eccentric contact I13A and an eccentric contact II 13B, when the valve disc closes a fluid channel, the eccentric contact I13A pushes the valve disc I8A to deviate, a forced tooth surface 12 contacts with a left rack 11A to force the valve disc I8A to perform rotary motion, and when the valve disc opens the fluid channel, the eccentric contact II 13B pushes the valve disc II 8B to deviate, and the forced tooth surface 12 contacts with a right rack 11B to force the valve disc II 8B to perform rotary motion in the same direction; the synchronizing plate 7 is mounted between the first valve disc 8A and the second valve disc 8B for ensuring that the movements of the two valve discs remain synchronized.
The left rack 11A and the right rack 11B are parallel to the reciprocating push-pull rod 2.
The tooth surface 12 is consistent with the tooth shapes of the left rack 11A and the right rack 11B, and the tooth shapes of the tooth surface 12, the left rack 11A and the right rack 11B are one of triangular teeth, rectangular teeth, trapezoidal teeth and involute teeth.
In the embodiment, the double-valve disc gate valve is controlled by a cylinder, the valve diameter D250 is designed to have the pressure of 1.0MPa, the design temperature is 200 ℃, the valve disc gate valve is applied to the pneumatic conveying of boiler fly ash with the temperature of 150 ℃, the structure is that the diameter D60 of a reciprocating push-pull rod 2, the thickness of a valve disc support 5 is 230mm, a first valve cover 4A and a second valve cover 4B are provided with flanges Dn250, the thickness of a synchronizing plate 7 is 12mm, the sealing outer diameter D300 of a first valve disc 8A and a valve cover 8B, the tooth shapes of a left rack 11A and a right rack 11B are 60-degree triangle tooth heights of 20mm, the tooth shape of a tooth surface 12 is triangle, and the tooth heights of 20mm.
When the gate valve is closed, as shown in fig. 2, the first eccentric contact 13A with the valve closing drive on the valve disc support 5 pushes the two valve discs to close the gate valve, the tooth surface 12 of the first valve disc 8A is contacted with the left rack 11A due to the eccentric pushing of the first eccentric contact 13A, and the valve discs are forced to rotate clockwise when sliding back and forth under the action of the synchronizing plate 7 until the gate valve is closed.
As shown in fig. 3, when the gate valve is opened, the eccentric contact II 13B with the valve closing drive on the valve disc support 5 pulls the two valve discs to close the gate valve, the tooth surface 12 of the valve disc II 8B is contacted with the right rack 11B due to the eccentric pulling of the eccentric contact II 13B, and the valve discs are forced to rotate clockwise when sliding back and forth under the action of the synchronizing plate 7 until the gate valve is opened.
Example 2
As shown in fig. 4-6, a double gate valve for forcing the valve disc to rotate mainly comprises a second valve body 21, a reciprocating swing rod 22, a valve cover three 24A, a valve cover four 24B, a valve disc support 5, a spring 6, a synchronizing plate 7, a valve disc one 8A and a valve disc two 8B; the second valve body 21, the third valve cover 24A and the fourth valve cover 24B form a valve cavity, a left arc-shaped rack 28A and a right arc-shaped rack 28B are arranged on two sides of the inner wall of the second valve body 21, and an inlet 31A and an outlet 31B are arranged on the valve cover and form a fluid channel; the first valve disc 8A and the second valve disc 8B are arranged on the valve disc support 5, tooth surfaces 12 are arranged on the periphery of the valve disc, and the valve disc is tightly attached to sealing surfaces of corresponding valve covers on two sides under the tensioning action of the spring 6; the valve disc support 5 is arranged at the tail end of the reciprocating swing rod 22, the reciprocating swing rod 22 drives the valve disc support 5 to reciprocate around the shaft 20, the valve disc support 5 is provided with an eccentric contact I13A and an eccentric contact II 13B, when the valve disc closes the fluid channel, the eccentric contact I13A pushes the valve disc I8A to deviate, a forced tooth surface 12 contacts with a left arc-shaped rack 28A to force the valve disc I8A to perform rotary motion, and when the valve disc opens the fluid channel, the eccentric contact II 13B pushes the valve disc II 8B to deviate, and the forced tooth surface 12 contacts with a right arc-shaped rack 28B to force the valve disc II 8B to perform rotary motion in the same direction; the synchronizing plate 7 is mounted between the first valve disc 8A and the second valve disc 8B for ensuring that the movements of the two valve discs remain synchronized.
The tooth surface 12 is consistent with the tooth shapes of the left arc-shaped rack 28A and the right arc-shaped rack 28B, and the tooth shapes of the tooth surface 12, the left arc-shaped rack 28A and the right arc-shaped rack 28B are one of triangular teeth, rectangular teeth, trapezoidal teeth and involute teeth.
In this embodiment, the swing type double valve disc gate valve is controlled by the pneumatic actuator, and the parameters are the same as those in embodiment 1. Valve diameter D250, design pressure 1.0MPa, design temperature 200 ℃, apply to the boiler fly ash air conveying of temperature 150 ℃.
As shown in FIG. 4, the reciprocating swing rod 22 is 360mm in length and 45 degrees in swing angle, the thickness of the valve disc support 5 is 230mm, the third valve cover 24A and the fourth valve cover 24B are provided with flanges Dn250, the thickness of the synchronizing plate 7 is 12mm, the sealing outer diameter D300 of the first valve disc 8A and the second valve disc 8B, the tooth shapes of the left arc-shaped rack 28A and the right arc-shaped rack 28B are 60-degree triangular shapes, the tooth heights are 20mm, the tooth shapes of the tooth surfaces 12 are triangular shapes, and the tooth heights are 20mm.
When the gate valve is closed, as shown in fig. 5, the first eccentric contact 13A with the valve closing drive on the valve disc support 5 pushes the two valve discs to close the gate valve, the tooth surface 12 of the first valve disc 8A is contacted with the left arc-shaped rack 28A due to the eccentric pushing of the first eccentric contact 13A, and the valve discs are forced to rotate clockwise under the action of the synchronizing plate 7 until the gate valve is closed.
When the gate valve is opened, as shown in fig. 6, the eccentric contact II 13B with the valve closing drive on the valve disc support 5 pulls the two valve discs to close the gate valve, the tooth surface 12 of the valve disc II 8B is contacted with the right arc-shaped rack 28B due to the eccentric pulling of the eccentric contact II 13B, and the valve discs are forced to rotate clockwise under the action of the synchronizing plate 7 until the gate valve is opened.
The invention has the beneficial effects that: the movement of the forced valve disc is formed by combining translation and rotation, no matter the valve disc rotates in the same direction when in closing or opening movement, the forced valve disc synchronously moves, counter-lapping is generated between the valve disc and the valve cover, and the better abrasion sealing effect can be achieved within a certain abrasion range, so that the service life of the valve is greatly prolonged, abrasion grains are uniformly distributed on a friction surface, and the service life of the valve is prolonged; and because the abrasion between the valve disc and the valve cover is uniform, the friction surface can keep higher smoothness, the friction force is lower, the running resistance of the gate valve is small, and the opening and closing are more reliable and stable.
By adopting the invention, the sealing valve disc is forced to rotate and move synchronously when the valve is opened and closed, so that the operation is more stable, the abrasion is more uniform and the service life is longer.
In conclusion, due to the adoption of the technical scheme, the invention has the advantages of long service life, smooth operation, low energy consumption and high reliability.
The above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (5)
1. A double gate valve for forcing a valve disc to rotate is characterized in that: the valve mainly comprises a first valve body (1), a reciprocating push-pull rod (2), a valve cover I (4A), a valve cover II (4B), a valve disc support (5), a spring (6), a synchronizing plate (7), a valve disc I (8A) and a valve disc II (8B); the valve comprises a first valve body (1), a first valve cover (4A) and a second valve cover (4B), wherein a left rack (11A) and a right rack (11B) are arranged on two sides of the inner wall of the first valve body (1), and an inlet (31A) and an outlet (31B) are arranged on the valve cover and form a fluid channel; the first valve disc (8A) and the second valve disc (8B) are arranged on the valve disc support (5), tooth surfaces (12) are arranged on the periphery of the valve disc, and the valve disc is tightly attached to sealing surfaces of corresponding valve covers on two sides under the tensioning action of the spring (6); the valve disc support (5) is arranged at the tail end of the reciprocating push-pull rod (2), the reciprocating push-pull rod (2) drives the valve disc support (5) to reciprocate, the valve disc support (5) is provided with an eccentric contact I (13A) and an eccentric contact II (13B), when the valve disc closes a fluid channel, the eccentric contact I (13A) pushes the valve disc I (8A) to deviate, a forced tooth surface (12) contacts with a left rack (11A) to force the valve disc I (8A) to perform rotary motion, when the valve disc opens the fluid channel, the eccentric contact II (13B) pushes the valve disc II (8B) to deviate, and the forced tooth surface (12) contacts with a right rack (11B) to force the valve disc II (8B) to perform rotary motion in the same direction; the synchronizing plate (7) is arranged between the first valve disc (8A) and the second valve disc (8B) and is used for ensuring that the movement of the two valve discs is kept synchronous.
2. A double gate valve for forcing a valve disc to rotate according to claim 1, characterized in that the left rack (11A) and the right rack (11B) are parallel to the reciprocating push-pull rod (2).
3. The double gate valve for forced valve disc rotation according to claim 1, wherein the tooth surface (12) is consistent with tooth shapes of a left rack (11A) and a right rack (11B), and tooth shapes of the tooth surface (12), the left rack (11A) and the right rack (11B) are one of triangular teeth, rectangular teeth, trapezoidal teeth and involute teeth.
4. The double gate valve is characterized by mainly comprising a second valve body (21), a reciprocating swing rod (22), a valve cover III (24A), a valve cover IV (24B), a valve disc support (5), a spring (6), a synchronizing plate (7), a valve disc I (8A) and a valve disc II (8B); the second valve body (21), the third valve cover (24A) and the fourth valve cover (24B) form a valve cavity, a left arc-shaped rack (28A) and a right arc-shaped rack (28B) are arranged on two sides of the inner wall of the second valve body (21), and an inlet (31A) and an outlet (31B) are arranged on the valve cover and form a fluid channel; the first valve disc (8A) and the second valve disc (8B) are arranged on the valve disc support (5), tooth surfaces (12) are arranged on the periphery of the valve disc, and the valve disc is tightly attached to sealing surfaces of corresponding valve covers on two sides under the tensioning action of the spring (6); the valve disc support (5) is arranged at the tail end of the reciprocating swing rod (22), the reciprocating swing rod (22) drives the valve disc support (5) to swing reciprocally around the shaft (20), the valve disc support (5) is provided with an eccentric contact I (13A) and an eccentric contact II (13B) so that when the valve disc closes a fluid channel, the eccentric contact I (13A) pushes the valve disc I (8A) to deviate, a forced tooth surface (12) contacts with a left arc-shaped rack (28A) to force the valve disc I (8A) to perform rotary motion, the eccentric contact II (13B) pushes the valve disc II (8B) to deviate when the valve disc opens the fluid channel, and the forced tooth surface (12) contacts with a right arc-shaped rack (28B) to force the valve disc II (8B) to perform rotary motion in the same direction; the synchronizing plate (7) is arranged between the first valve disc (8A) and the second valve disc (8B) and is used for ensuring that the movement of the two valve discs is kept synchronous.
5. The double gate valve for forced valve disc rotation according to claim 4, wherein the tooth surface (12) is consistent with tooth shapes of a left arc-shaped rack (28A) and a right arc-shaped rack (28B), and the tooth shapes of the tooth surface (12), the left arc-shaped rack (28A) and the right arc-shaped rack (28B) are one of triangular teeth, rectangular teeth, trapezoidal teeth and involute teeth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810974847.8A CN108730546B (en) | 2018-08-24 | 2018-08-24 | Double-gate valve capable of forcing valve disc to rotate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810974847.8A CN108730546B (en) | 2018-08-24 | 2018-08-24 | Double-gate valve capable of forcing valve disc to rotate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108730546A CN108730546A (en) | 2018-11-02 |
| CN108730546B true CN108730546B (en) | 2023-12-12 |
Family
ID=63943146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810974847.8A Active CN108730546B (en) | 2018-08-24 | 2018-08-24 | Double-gate valve capable of forcing valve disc to rotate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108730546B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB356887A (en) * | 1930-07-25 | 1931-09-17 | Bertram Braund Waller | Improvements in stop valves for gas, air, steam, water or other fluids |
| JP2003042310A (en) * | 2001-07-31 | 2003-02-13 | Smc Corp | Gate valve |
| CN201538581U (en) * | 2009-11-26 | 2010-08-04 | 中冶赛迪工程技术股份有限公司 | Gear rack driving material flow adjusting device |
| CN104385121A (en) * | 2014-09-30 | 2015-03-04 | 无锡康柏斯机械科技有限公司 | Grinding bearing device for hard disk substrate grinder |
| CN206786039U (en) * | 2017-04-05 | 2017-12-22 | 方圆阀门集团有限公司 | A kind of flat gate valve |
| CN209084035U (en) * | 2018-08-24 | 2019-07-09 | 南京威普粉体工程有限公司 | A kind of double-gate plate valve for forcing valve disc revolution |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7434442B2 (en) * | 2006-08-16 | 2008-10-14 | Werth Advanced Packaging Innovations, Ltd. | Container bodymaker |
-
2018
- 2018-08-24 CN CN201810974847.8A patent/CN108730546B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB356887A (en) * | 1930-07-25 | 1931-09-17 | Bertram Braund Waller | Improvements in stop valves for gas, air, steam, water or other fluids |
| JP2003042310A (en) * | 2001-07-31 | 2003-02-13 | Smc Corp | Gate valve |
| CN201538581U (en) * | 2009-11-26 | 2010-08-04 | 中冶赛迪工程技术股份有限公司 | Gear rack driving material flow adjusting device |
| CN104385121A (en) * | 2014-09-30 | 2015-03-04 | 无锡康柏斯机械科技有限公司 | Grinding bearing device for hard disk substrate grinder |
| CN206786039U (en) * | 2017-04-05 | 2017-12-22 | 方圆阀门集团有限公司 | A kind of flat gate valve |
| CN209084035U (en) * | 2018-08-24 | 2019-07-09 | 南京威普粉体工程有限公司 | A kind of double-gate plate valve for forcing valve disc revolution |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108730546A (en) | 2018-11-02 |
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