CN109578606B - Drain valve for special working condition - Google Patents
Drain valve for special working condition Download PDFInfo
- Publication number
- CN109578606B CN109578606B CN201811625232.0A CN201811625232A CN109578606B CN 109578606 B CN109578606 B CN 109578606B CN 201811625232 A CN201811625232 A CN 201811625232A CN 109578606 B CN109578606 B CN 109578606B
- Authority
- CN
- China
- Prior art keywords
- drain valve
- metal ball
- ball ring
- column
- flow channel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000002184 metal Substances 0.000 claims abstract description 66
- 229910052751 metal Inorganic materials 0.000 claims abstract description 66
- 238000007789 sealing Methods 0.000 claims abstract description 50
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 239000002905 metal composite material Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 abstract description 12
- 230000007797 corrosion Effects 0.000 abstract description 11
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 4
- 239000002985 plastic film Substances 0.000 description 4
- 229920006255 plastic film Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012465 retentate Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- 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
- F16K3/22—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 sealing faces shaped as surfaces of solids of revolution
- F16K3/24—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 sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/26—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 sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member
- F16K3/262—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 sealing faces shaped as surfaces of solids of revolution with cylindrical valve members with fluid passages in the valve member with a transverse bore in the valve member
-
- 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
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
Abstract
The application discloses a drain valve for special working conditions, which comprises a drain valve body and a runner arranged in the drain valve body, wherein a valve core capable of blocking or conducting the runner is arranged in the runner of the drain valve body, the drain valve body comprises an axle center column, a connecting column and a sealing column which are fixedly connected in sequence and coaxially arranged, an external thread which can be matched with the threads of the valve is arranged on the peripheral side wall of the connecting column, a metal ball ring is sleeved on the outer wall of the axle center column, the inner wall of the metal ball ring is abutted with the outer wall of the axle center column, and both ends of the metal ball ring are provided with chamfers, so that the metal ball ring forms a structure with thick middle and thin both ends, one end of the metal ball ring is abutted with the connecting column, and the other end of the metal ball ring is abutted with a fixed step arranged in the valve. The application has the following beneficial effects: the drain valve has the advantages of large medium temperature range and corrosion resistance, so that the drain valve can be applied to various fields of high and low temperature or high corrosion, and further has wide application range and multiple purposes.
Description
Technical Field
The application relates to a drain valve, in particular to a drain valve for special working conditions.
Background
The drain valve is arranged on the valve body to achieve the effects of discharging the retentate and reducing the pollution of the medium to the valve. The valve body of the existing drain valve is as described in Chinese patent publication No. CN201554916U, and the valve body of the drain valve is directly connected with the valve body through threads and is sealed. Therefore, the thread on the surface of the drain valve has high machining precision and is completely matched with the valve body so as to realize sealing. However, the very fine thread processing results in an increased scrap. If maintenance is required, the sealing is realized through threaded connection, and the assembly is quite tight, so that the teeth can be snapped when the valve is removed, the valve cannot be removed, and the production cost and the use cost of the drain valve are improved.
The use of the above drain valve is described in a fixed ball valve (as shown in fig. 7) of chinese patent publication No. CN106594311 a. The ball valve comprises a drain valve body 1, and the drain valve body 1 can be positioned in the valve 16 and communicated with a horizontal through hole 17 in the valve 16 for discharging the retentate in the valve cavity, so that the interior of the valve cavity is kept clean, as the ball valve is only one of various types of valves. When the valve is installed, the external hexagonal rotating part on the drain valve body 1 is rotated by the socket wrench, so that the drain valve body 1 is rotated into the valve 16. The valve 16 further includes a fixing step 13 for limiting the drain valve body 1, and one side of the fixing step 13 abuts against the drain valve body 1.
Based on the above problems, a solution is provided that does not require a very fine thread process, but maintains the tightness of the connection between the drain valve and the valve body. The method is to wind a plastic film on the external thread surface of the drain valve and then connect the valve body with the thread. Wherein, plastic film is mingled between drain valve and valve body to improve the sealing performance of its junction. However, this method is not suitable for valves that circulate high temperatures or have corrosive media. When the medium temperature is higher or is corrosive, the plastic film is easy to melt or corrode, and if the working condition is in an ultralow temperature environment, the cold energy loss exists, and the plastic film is not suitable for special working conditions. And then the junction between the drain valve and the valve body is leaked, so that serious potential safety hazards exist, and uncontrollable safety accidents are easy to cause.
In view of the above, the present inventors have developed a drain valve that is adaptable to a pipe or valve under specific conditions. The drain valve has the advantages of large medium temperature range and corrosion resistance, so the drain valve can be suitable for various fields of high and low temperature or high corrosion, and further has wide application range and multiple purposes.
Disclosure of Invention
The application aims to provide the drain valve for the special working condition, and the drain valve has the advantages of large bearable medium temperature range and corrosion resistance, so that the drain valve is applicable to various fields of high temperature and low temperature or high corrosion, and further has wide application range and multiple purposes.
The technical aim of the application is realized by the following technical scheme: the utility model provides a special operating mode is with drain valve, includes drain valve body and the runner of setting in the drain valve body, drain valve body is provided with the case that can block up or switch on the runner in the runner, drain valve body is including axle center post, spliced pole and the sealing post of fixed connection and coaxial setting in proper order, be provided with on the periphery lateral wall of spliced pole can with valve screw-thread fit's external screw thread, the cover is equipped with the metal ball ring on the outer wall of axle center post, the inner wall and the outer wall looks butt of axle center post of metal ball ring, the both ends of metal ball ring all are provided with the chamfer, so that the metal ball ring forms the thick both ends in middle thin structure, the one end and the spliced pole looks butt of metal ball ring, the other end butt has the fixed step that sets up in the valve.
The application is further provided with: the cross-sectional area of the connecting column is smaller than that of the sealing column and larger than that of the axle center column.
The application is further provided with: and a base which is a hexagonal cylinder is fixedly connected to one side, far away from the connecting column, of the sealing column.
The application is further provided with: the sealing device is characterized in that an annular mounting groove is formed in one side, facing the connecting column, of the sealing column, a sealing piece which can seal the drain valve and the valve connection part is arranged in the annular mounting groove, and the height of the sealing piece is higher than the depth of the annular mounting groove, so that one end of the sealing piece protrudes out of the annular mounting groove.
The application is further provided with: the sealing element is a graphite ring or a metal composite pad.
The application is further provided with: the chamfer angles at the two ends of the metal ball ring are all larger than 45 degrees.
The application is further provided with: the metal ball ring is made of stainless steel or copper.
The application is further provided with: the flow channel comprises a flow channel inlet and a flow channel outlet, the flow channel inlet is positioned at the axis of the axis column, the flow channel outlet is positioned on the side wall of the sealing column, the flow channel outlet is a drain hole, the axial lead of the flow channel outlet is perpendicular to the axial lead of the flow channel inlet, and the valve core is positioned at the intersection of the flow channel outlet and the axis of the flow channel inlet.
In summary, the application has the following beneficial effects:
(1) During installation, the base which is a hexagonal cylinder body is rotated through the socket wrench, so that external threads on the connecting column are in threaded connection with external threads in the valve for installing the drain valve. When the drain valve and the valve are in threaded connection and matched, the distance between the metal ball ring and the fixed step in the valve is gradually shortened, and the metal ball ring and the fixed step are finally in a mutually abutting shape. If the technician continues to rotate the socket wrench, the drain valve gradually enters the valve, so that the distance between the fixed step in the valve and the connecting column is gradually reduced to be smaller than the length of the metal ball ring, and two ends of the metal ball ring are compressed. Because the inclined planes at the two ends of the metal ball ring are in advance applied force, and the metal ball ring is in a structure characterized in that the two ends of the metal ball ring are thin and thick, the inclined planes at the two ends of the metal ball ring are respectively subjected to extrusion forces from the two ends, so that the inclined planes at the two ends of the metal ball ring can only be extruded, expanded and widened towards the middle, and finally, the two ends of the metal ball ring are axially sealed. The metal ball ring is made of stainless steel or copper, so that the sealing performance of the joint of the drain valve and the valve under a special working condition can be ensured;
(2) During installation, the base which is a hexagonal cylinder body is rotated through the socket wrench, so that external threads on the connecting column are in threaded connection with external threads in the valve for installing the drain valve. When the drain valve and the valve are connected through threads, the sealing piece protruding out of the annular mounting groove can be abutted against the valve and extruded, so that the extruded sealing piece can be extruded on the inner wall of the annular mounting groove at the part of the annular mounting groove, and the sealing performance of the joint of the drain valve and the valve is improved. The sealing element is supported by a graphite ring or a metal composite pad and has the characteristics of high temperature resistance and corrosion resistance so as to improve the application range of the drain valve to different temperature media and high corrosion media;
(3) Through the two sealing lines, the sealing line can ensure the sealing performance of the joint of the drain valve and the valve in the high-temperature medium transmission process of more than 300 ℃ and the sealing performance of the joint of the drain valve and the valve in the high-corrosion medium transmission process, so that the bearable medium temperature range is large, the sealing line is applicable to various fields of high and low temperature and high corrosion, and the sealing line has wide application range and multiple purposes.
Drawings
FIG. 1 is a schematic diagram of an embodiment;
FIG. 2 is a cross-sectional view of the seal member disposed in the annular mounting groove of FIG. 1;
FIG. 3 is a schematic view of a metal ball ring;
FIG. 4 is a cross-sectional view of the structure of FIG. 3;
FIG. 5 is a schematic view of the flow channel and the valve core in FIG. 1;
FIG. 6 is a schematic view of the drain valve in an installed state with the valve;
fig. 7 is a schematic view showing a structure of a drain valve and a valve in an installed state in the prior art.
Reference numerals: 1. a drain valve body; 2. a flow passage; 3. a valve core; 4. an axle center column; 5. a connecting column; 6. a sealing column; 7. a base; 8. an external thread; 9. an annular mounting groove; 10. a seal; 11. a metal ball ring; 12. chamfering; 13. a fixed step; 14. a flow channel inlet; 15. a flow channel outlet; 16. a valve; 17. horizontal through holes.
Detailed Description
The present application will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explanation of the present application and is not to be construed as limiting the present application, and modifications to the present embodiment, which may not creatively contribute to the present application as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present application.
As shown in fig. 1, 2 and 5, a drain valve for special working conditions comprises a drain valve body 1 and a flow channel 2 arranged in the drain valve body 1, wherein a valve core 3 capable of blocking or conducting the flow channel 2 is arranged in the flow channel 2 of the drain valve body 1. The drain valve body comprises an axle center column 4, a connecting column 5 and a sealing column 6 which are fixedly connected in sequence and coaxially arranged, and a base 7 which is a hexagonal column body is fixedly connected to one side, far away from the connecting column 5, of the sealing column 6. The cross-sectional area of the connecting column 5 is smaller than the cross-sectional area of the sealing column 6 and larger than the cross-sectional area of the axial column 4.
The external thread 8 which can be matched with the valve thread is arranged on the peripheral side wall of the connecting column 5, an annular mounting groove 9 is arranged on one side of the sealing column 6 facing the connecting column 5, a sealing element 10 which can seal the drain valve and the valve joint is arranged in the annular mounting groove 9, and the height of the sealing element 10 is higher than the depth of the annular mounting groove 9, so that one end of the sealing element 10 protrudes out of the annular mounting groove 9. The seal 10 is preferably a graphite ring or a metal composite pad.
As shown in fig. 2, 5 and 6, when in installation, the base 7 which is a hexagonal cylinder is rotated by a socket wrench, so that the external thread 8 on the connecting column 5 is in threaded connection with the external thread 8 in the valve, on which the drain valve can be installed. When the drain valve and the valve are connected through threads, the sealing element 10 protruding out of the annular mounting groove 9 can be abutted against the valve and extruded, so that the extruded sealing element 10 is extruded on the inner wall of the annular mounting groove 9 at the part of the annular mounting groove 9, and the sealing performance of the junction of the drain valve and the valve is improved. The seal 10 is supported by a graphite ring or a metal composite pad, which can resist high temperature and high corrosion, so as to improve the application range of the drain valve to different temperature media and high corrosion media.
As shown in fig. 1, 3 and 6, a metal ball ring 11 is sleeved on the outer wall of the axle center column 4, and the inner wall of the metal ball ring 11 is abutted against the outer wall of the axle center column 4. The metal ball ring 11 is provided with chamfers 12 at both ends so that the metal ball ring 11 forms a structure with a thick middle and thin both ends. One end of the metal ball ring 11 is abutted with the connecting column 5, and the other end is abutted with a fixed step 13 positioned in the valve. The metal ball ring 11 is preferably made of stainless steel, copper or other materials consistent with the working conditions.
As shown in FIG. 4, the chamfers 12 at the two ends of the metal ball ring 11 are all larger than 45 degrees, so that the gradual change amplitude of the cambered surfaces of the chamfers 12 is gentle, and the chamfers are smoother and more beneficial to the stress extrusion at the two ends of the metal ball ring 11 to cause deformation.
For ease of understanding, the chinese patent of CN106594311a mentioned in the background is taken as an example. As shown in fig. 1 and 6, when in installation, the base 7 which is a hexagonal cylinder is rotated by a socket wrench, so that the external thread 8 on the connecting column 5 is in threaded connection with the external thread 8 in the valve, on which the drain valve can be installed. When the drain valve and the valve are in threaded connection and fit, the distance between the metal ball ring 11 and the fixed step 13 in the valve is gradually shortened, and the metal ball ring and the fixed step are in a mutually abutting shape finally. If the technician continues to rotate the socket wrench, the drain valve gradually enters the valve, so that the distance between the fixing step 13 and the connecting post 5 in the valve is gradually reduced to be smaller than the length of the metal ball ring 11, and the two ends of the metal ball ring 11 are compressed. Because the inclined planes at the two ends of the metal ball ring 11 are in advance applied force, and the metal ball ring 11 has the structural characteristics of thin two ends and thick middle, the inclined planes at the two ends of the metal are respectively subjected to extrusion forces from the two ends, so that the inclined planes at the two ends of the metal ball ring 11 can only extrude, expand and widen towards the middle, and finally, the two ends of the metal ball ring 11 are respectively sealed with the axle center column 4. Because the metal ball ring 11 is made of stainless steel, copper or other materials with the same working conditions, the sealing performance of the joint of the drain valve and the valve can be ensured by the metal ball ring 11 under the special working condition.
The two ends of the metal ball ring 11 shown in fig. 6 are respectively extruded by the fixed step 13 and the connecting column 5, and the valve is in threaded connection with the drain valve of the application, when the valve and the drain valve relatively rotate, the fixed step 13 positioned on the valve and the chamfer 12 on the metal ball ring 11 relatively rotate, and the chamfer 12 is in a smooth arc shape, so that the force from the fixed step 13 can be uniformly stressed, and the two ends of the metal ball ring 11 are ensured to be uniformly stressed and deformed.
The principle of realizing surface sealing at two ends of the metal ball ring 11 is as follows: since the metal ball ring 11 is sleeved outside the axle center column 4 and is abutted against the axle center column 4. When the inclined surfaces at the two ends of the metal ball ring 11 are subjected to extrusion force, the extrusion force acts on the inclined surfaces, so that the extrusion force can be decomposed into a first component force in the direction of the axle center column 4 and a second component force in the extrusion direction. Wherein the first component force can promote the two ends of the metal ball ring 11 to be more tightly matched with the axle center column 4; the second component of force may shorten the length of the metal ball ring 11. Under the combined action of the first component and the second component, inward contraction and outward expansion deformation actions are synchronously carried out at the two ends of the metal ball ring 11, so that the two ends of the metal ball ring 11 expand and widen, and finally, the surface sealing with the axle center column 4 is realized at the two ends of the metal ball ring 11. The chamfer 12 inclined planes at the two ends of the metal ring 11 are larger than 45 degrees, so that the extrusion force can be conveniently applied to the two ends of the metal ring 11.
Further, as shown in fig. 1 and 5, the flow channel 2 includes a flow channel inlet 14 and a flow channel outlet 15, the flow channel inlet 14 is located at the axis of the axial column 4, the flow channel outlet 15 is located on the side wall of the sealing column 6, and the flow channel outlet 15 is a drain hole. The axis of the flow channel outlet 15 is perpendicular to the axis of the flow channel inlet 14, and the valve core 3 is positioned at the intersection of the flow channel outlet 15 and the axis of the flow channel inlet 14.
Claims (5)
1. The utility model provides a special operating mode is with drain valve, includes drain valve body (1) and sets up runner (2) in drain valve body (1), drain valve body (1) are provided with case (3) that can block up or switch on runner (2) in runner (2), characterized by: the drainage valve body comprises an axle center column (4), a connecting column (5) and a sealing column (6) which are fixedly connected in sequence and coaxially arranged, an external thread (8) which can be matched with a valve in a threaded mode is arranged on the peripheral side wall of the connecting column (5), a metal ball ring (11) is sleeved on the outer wall of the axle center column (4), the inner wall of the metal ball ring (11) is abutted against the outer wall of the axle center column (4), chamfers (12) are arranged at two ends of the metal ball ring (11), so that the metal ball ring (11) forms a structure with thick middle and thin two ends, one end of the metal ball ring (11) is abutted against the connecting column (5), and a fixed step (13) arranged in the valve is abutted against the other end of the metal ball ring (11);
the cross section area of the connecting column (5) is smaller than that of the sealing column (6) and larger than that of the axle center column (4);
a base (7) which is a hexagonal cylinder is fixedly connected to one side, far away from the connecting column (5), of the sealing column (6);
one side that sealing post (6) were oriented spliced pole (5) is provided with annular mounting groove (9), annular mounting groove (9) embeds can play sealing effect's sealing member (10) to drain valve and valve junction, the high degree of depth that is higher than annular mounting groove (9) of sealing member (10) makes one end protrusion in annular mounting groove (9) of sealing member (10).
2. A drain valve for special conditions according to claim 1, wherein: the sealing element (10) is a graphite ring or a metal composite pad.
3. A drain valve for special conditions according to claim 2, wherein: the chamfer angles (12) at the two ends of the metal ball ring (11) are all larger than 45 degrees.
4. A drain valve for special conditions according to claim 3, wherein: the metal ball ring (11) is made of stainless steel or copper.
5. A drain valve for special conditions according to claim 4, wherein: the flow channel (2) comprises a flow channel inlet (14) and a flow channel outlet (15), the flow channel inlet (14) is positioned at the axle center of the axle center column (4), the flow channel outlet (15) is positioned on the side wall of the sealing column (6), the flow channel outlet (15) is a drain hole, the axial lead of the flow channel outlet (15) and the axial lead of the flow channel inlet (14) are vertically arranged, and the valve core (3) is positioned at the intersection of the flow channel outlet (15) and the axle center of the flow channel inlet (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811625232.0A CN109578606B (en) | 2018-12-28 | 2018-12-28 | Drain valve for special working condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811625232.0A CN109578606B (en) | 2018-12-28 | 2018-12-28 | Drain valve for special working condition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109578606A CN109578606A (en) | 2019-04-05 |
| CN109578606B true CN109578606B (en) | 2023-12-12 |
Family
ID=65932258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811625232.0A Active CN109578606B (en) | 2018-12-28 | 2018-12-28 | Drain valve for special working condition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109578606B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3114420U (en) * | 2005-07-05 | 2005-10-27 | 秀三郎 石井 | Automatic relief valve mechanism in on-off valve device of pipe joint device |
| JP2007105639A (en) * | 2005-10-13 | 2007-04-26 | Yamashin-Filter Corp | Filtration apparatus |
| DE102006050723A1 (en) * | 2006-10-24 | 2008-05-21 | Klaus Heinrichs | Venting valve for locking screw of transmission i.e. electric motor transmission, has sealing surface provided at body and/or at collar at inner mantle surface, and separate elastic ring sealant for sealing between body and mantle surface |
| DE202007016859U1 (en) * | 2007-11-30 | 2009-04-02 | Heinrichs, Klaus | Bleed valve, especially for screw plug |
| DE102012004579B3 (en) * | 2012-03-09 | 2013-02-28 | Mann + Hummel Gmbh | filtering device |
| WO2013147638A1 (en) * | 2012-03-27 | 2013-10-03 | Ufimtsev Vladimir Anatolyevich | Manometer needle valve |
| CN206555503U (en) * | 2017-03-04 | 2017-10-13 | 慈溪市凤祥电器仪表有限公司 | Large-displacement pressure relief valve |
| TWM553390U (en) * | 2017-08-23 | 2017-12-21 | ji bin Zhang | Metal all-direction ducting tube with extension effect |
| CN209557696U (en) * | 2018-12-28 | 2019-10-29 | 特技阀门集团有限公司 | A kind of special operation condition bleed valve |
-
2018
- 2018-12-28 CN CN201811625232.0A patent/CN109578606B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3114420U (en) * | 2005-07-05 | 2005-10-27 | 秀三郎 石井 | Automatic relief valve mechanism in on-off valve device of pipe joint device |
| JP2007105639A (en) * | 2005-10-13 | 2007-04-26 | Yamashin-Filter Corp | Filtration apparatus |
| DE102006050723A1 (en) * | 2006-10-24 | 2008-05-21 | Klaus Heinrichs | Venting valve for locking screw of transmission i.e. electric motor transmission, has sealing surface provided at body and/or at collar at inner mantle surface, and separate elastic ring sealant for sealing between body and mantle surface |
| DE202007016859U1 (en) * | 2007-11-30 | 2009-04-02 | Heinrichs, Klaus | Bleed valve, especially for screw plug |
| DE102012004579B3 (en) * | 2012-03-09 | 2013-02-28 | Mann + Hummel Gmbh | filtering device |
| WO2013147638A1 (en) * | 2012-03-27 | 2013-10-03 | Ufimtsev Vladimir Anatolyevich | Manometer needle valve |
| CN206555503U (en) * | 2017-03-04 | 2017-10-13 | 慈溪市凤祥电器仪表有限公司 | Large-displacement pressure relief valve |
| TWM553390U (en) * | 2017-08-23 | 2017-12-21 | ji bin Zhang | Metal all-direction ducting tube with extension effect |
| CN209557696U (en) * | 2018-12-28 | 2019-10-29 | 特技阀门集团有限公司 | A kind of special operation condition bleed valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109578606A (en) | 2019-04-05 |
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