CN112228582A - Grinding wheel valve with integrally detachable valve core - Google Patents
Grinding wheel valve with integrally detachable valve core Download PDFInfo
- Publication number
- CN112228582A CN112228582A CN202011249349.0A CN202011249349A CN112228582A CN 112228582 A CN112228582 A CN 112228582A CN 202011249349 A CN202011249349 A CN 202011249349A CN 112228582 A CN112228582 A CN 112228582A
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- grinding wheel
- valve
- valve core
- cavity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/04—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 pivoted closure members
- F16K3/06—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 pivoted closure members in the form of closure plates arranged between supply and discharge passages
- F16K3/08—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 pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lift Valve (AREA)
Abstract
The invention relates to a grinding wheel valve with a valve core capable of being integrally detached, which comprises: the valve body is sequentially provided with a fixed cavity, a fluid inlet cavity and a fluid outlet cavity which are communicated with each other from top to bottom; and the side wall of the fluid inlet cavity is provided with an inlet flow passage and an outlet flow passage respectively relative to the fluid inlet cavity and the fluid outlet cavity; the top of the fixed cavity is open; the valve core assembly comprises a valve core sleeve, a grinding wheel pair and a valve rod; the valve core sleeve is hermetically arranged in the fluid inlet cavity, the bottom of the valve core sleeve is provided with a grinding wheel pair, the grinding wheel pair comprises a fixed grinding wheel and a movable grinding wheel, the fixed grinding wheel and the movable grinding wheel are provided with a flow channel, the movable grinding wheel rotates along with the valve rod, and the communication or cut-off state of the flow channel on the fixed grinding wheel and the movable grinding wheel is changed; the central hole of the plug penetrates through the top of the valve rod; the outer wall of the fixing cavity is in threaded connection with the inner wall of the fixing cavity. The opening and closing part of the grinding wheel valve is arranged in the valve core sleeve, the plug only needs to be unscrewed, the valve core assembly can be integrally taken out and replaced or a damaged part is replaced and then the valve core assembly is installed back, the valve core is strong in universality, the maintenance is convenient, the service life of the valve is prolonged, and the use cost is greatly reduced.
Description
Technical Field
The invention relates to the technical field of oil exploitation equipment, relates to a valve core for an oil field water injection station, and particularly relates to a grinding wheel valve with an integrally detachable valve core.
Background
The regulating valve for the water injection pipe network in the oil field is prone to selecting and using the grinding wheel valve due to high bearing pressure and frequent regulation of water injection flow or pressure, so that the service life of the valve is prolonged, but even if the regulating valve is used, the opening and closing part (mainly comprising the grinding wheel, a valve rod and the like) still can be generated to be closed or unstable in flow regulation due to abrasion and erosion after a certain time, and therefore the abrasion part or even the valve body needs to be replaced. Because the water injection pressure is high, the caliber is large, most main pipeline valves are welded, if the valves are integrally replaced, the cost is high, the engineering quantity is large, and the production is influenced; if the valve body shell is good, only the quick-wear part needs to be maintained and replaced, because the grinding wheel valve is a non-standard product, products produced by various manufacturers have the same opening and closing principle and incomplete structure, and the replacement of the wear part is also a technology with strong speciality, and the requirement of the safety standard of pressure-bearing equipment needs to be met after the part is replaced. According to maintenance experience, the designed grinding wheel valve shell has long service life, mainly the opening and closing part and the sealing part are easy to damage, the conventional grinding wheel valve needs to be disassembled one by one, and special disassembling and assembling tools are also needed, so that time and labor are wasted, if the valve core can be made into an integral detachable form, the valve core is integrally replaced after the sealing performance and the pressure resistance of the valve core are inspected to be qualified in advance, the technical requirements of disassembling and assembling can be greatly simplified, the replacement is convenient, the use cost can be reduced, and the production stop time can be shortened.
Therefore, how to provide a grinding wheel valve with an integrally detachable valve core is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
Therefore, the invention aims to provide a grinding wheel valve with a valve core capable of being integrally disassembled, and the problem that maintenance and replacement are inconvenient after a grinding wheel valve component is damaged is solved.
The invention provides a grinding wheel valve with a valve core capable of being integrally detached, which comprises:
the valve body is sequentially provided with a fixed cavity, a fluid inlet cavity and a fluid outlet cavity which are communicated with each other from top to bottom; and the side wall of the fluid inlet cavity is provided with an inlet flow passage and an outlet flow passage respectively relative to the fluid inlet cavity and the fluid outlet cavity; the top of the fixed cavity is open;
the valve core assembly comprises a valve core sleeve, a grinding wheel pair and a valve rod; the valve core sleeve is hermetically arranged in the fluid inlet cavity, the bottom of the valve core sleeve is provided with a grinding wheel pair, the grinding wheel pair comprises a fixed grinding wheel and a movable grinding wheel, the fixed grinding wheel and the movable grinding wheel are provided with a flow channel, the movable grinding wheel rotates along with the valve rod, and the communication or cut-off state of the flow channel on the fixed grinding wheel and the movable grinding wheel is changed;
the central hole of the plug penetrates through the top of the valve rod; the outer wall of the fixing cavity is in threaded connection with the inner wall of the fixing cavity.
According to the technical scheme, compared with the prior art, the grinding wheel valve with the integrally detachable valve core is disclosed, opening and closing parts of the grinding wheel valve are all installed in the valve core sleeve, the valve core sleeve is in clearance sealing fit with the inner cavity of the valve body, only the plug is required to be unscrewed, the valve core assembly can be integrally taken out and replaced or a damaged part is replaced, the valve core is strong in general assembly, the maintenance is greatly facilitated, the service life of the valve is prolonged, the use cost is greatly reduced, and the grinding wheel valve has a good application prospect.
Furthermore, the valve core sleeve is a cylinder with an opening at the top, a medium inlet communicated with the fluid inlet cavity is formed in the middle of the side wall of the valve core sleeve, and a medium outlet communicated with the fluid outlet cavity is formed in the center hole of the bottom end of the valve core sleeve.
Further, a first sealing groove for sealing a grinding wheel pair is formed in the inner wall of the bottom of the valve core sleeve; and a second sealing groove which is radially sealed with the valve body is arranged on the outer wall of the valve body. Wherein, the outer wall of the valve core sleeve can be respectively provided with two groups of second sealing grooves at the top and the bottom, and O-shaped ring seals are arranged in the first sealing groove and the second sealing groove.
Further, a first pin hole and a mounting hole are formed in the bottom end of the valve core sleeve and located around the medium outlet; the bottom of the fixed grinding wheel is provided with a second pin hole corresponding to the first pin hole and connected with the fixed grinding wheel through a first pin shaft; and a rubber column is arranged in the mounting hole. The second pin holes are blind holes, two groups of the first pin holes and two groups of the second pin holes can be used for mounting and positioning, a plurality of mounting holes are formed, and each mounting hole is internally provided with a rubber column; therefore, the fixed grinding wheel is positioned and pressed on the plurality of rubber columns through the first pin shaft and the bottom of the valve core sleeve, and the pressing force between the fixed grinding wheel and the movable grinding wheel is kept in a proper range.
Furthermore, the top of the movable grinding wheel is provided with a third pin hole, and the bottom of the valve rod is matched and fixed with the third pin hole through a second pin shaft. The movable grinding wheel is connected with the valve rod through a second pin shaft and can rotate along with the valve rod; the movable grinding wheel and the fixed grinding wheel are sealed through a contact surface plane, when the movable grinding wheel and the fixed grinding wheel are rotated to be communicated with each other through a circulation channel, an inner cavity of the valve body is communicated, the flow channel dead against area is enlarged along with the increase of the rotation angle of the valve rod, and the flow rate is increased. The fixed grinding wheel and the movable grinding wheel can be made of stainless steel materials.
Furthermore, the top of the valve rod penetrates out of the top of the valve core sleeve, the top of the valve core sleeve is provided with a bearing sleeve, and a thrust bearing which rotates with the valve rod is installed in the bearing sleeve; the bearing sleeve and the valve core sleeve are radially sealed through a sealing ring.
Furthermore, the valve body and the valve core sleeve are correspondingly provided with a first positioning groove and a second positioning groove which are fixed through positioning parts. The fixing part can adopt a flat key, and the flat key is fixed in the first positioning groove and the second positioning groove through locking screws.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a sectional view of a grinding wheel valve with an integrally detachable valve core according to the present invention;
FIG. 2 is a schematic structural view of the valve core assembly;
FIG. 3 is a schematic view of the valve core sleeve;
FIG. 4 is a top view of the cartridge cover;
in the figure: 1-valve body, 101-inlet flow channel, 102-outlet flow channel, 103-fluid inlet chamber, 104-first positioning groove, 2-valve core assembly, 201-valve core sleeve, 2011-medium outlet, 2012-first pin hole, 2013-medium inlet, 2014-second sealing groove, 2015-second positioning groove, 2016-first sealing groove, 2017-mounting hole, 202-grinding wheel pair, 2021-fixed grinding wheel, 2022-movable grinding wheel, 203-first pin shaft, 2031-second pin shaft, 204-rubber column, 205-valve rod, 206-thrust bearing, 207-bearing sleeve, 208-sealing ring; 209-positioning key, 210-locking screw and 3-plug.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1 and 2, an embodiment of the invention discloses a grinding wheel valve with a valve core capable of being integrally detached, which comprises:
the valve body 1 is provided with a fixed cavity, a fluid inlet cavity 103 and a fluid outlet cavity which are communicated with each other from top to bottom in sequence; an inlet flow channel 101 and an outlet flow channel 102 are respectively arranged on the side wall of the fluid inlet cavity and the fluid outlet cavity; the top of the fixed cavity is open;
the valve core assembly 2, the valve core assembly 2 comprises a valve core sleeve 201, a grinding wheel pair 202 and a valve rod 205; the valve core sleeve 201 is hermetically arranged in the fluid inlet cavity, the bottom of the valve core sleeve is provided with a grinding wheel pair 202, the grinding wheel pair 202 comprises a fixed grinding wheel 2021 and a movable grinding wheel 2022 which are provided with a flow passage, the movable grinding wheel 2022 rotates along with the valve rod 205, and the communication or cut-off state of the flow passage on the fixed grinding wheel 2021 and the movable grinding wheel 2022 is changed;
and a plug 3, wherein a central hole of the plug 3 penetrates through the top of the valve rod 205; the outer wall of the fixing cavity is in threaded connection with the inner wall of the fixing cavity. Wherein, be provided with the external screw thread on the 3 outer walls of end cap, be provided with the internal thread of being connected with the external screw thread on the fixed intracavity wall to realize wholly dismantling the case subassembly through this department screw-thread fit. The shape of the flow channel on the grinding wheel pair is not limited, and the flow channel can be designed according to the flow regulation requirement.
The invention discloses a grinding wheel valve with an integrally detachable valve core, wherein opening and closing parts of the grinding wheel valve are completely installed in a valve core sleeve, the valve core sleeve is in clearance sealing fit with an inner cavity of a valve body, only a plug is required to be unscrewed, and a valve core assembly can be integrally taken out for replacement or replaced after a damaged part is replaced.
Advantageously, the lower part of the valve stem 205 is U-shaped, and the middle of the U-shape serves as a medium inlet channel when the valve is opened by screwing.
More advantageously, the upper end surface of the valve core sleeve is at least provided with two screw holes in central symmetry, so that a suspension buckle or a handle can be conveniently installed when the valve core assembly is integrally hoisted or disassembled.
Referring to fig. 3 and 4, the valve core sleeve 201 is a cylinder with an open top, a medium inlet 2013 communicated with the fluid inlet cavity is formed in the middle of the side wall of the valve core sleeve, and a medium outlet 2011 communicated with the fluid outlet cavity is formed in the center hole of the bottom end of the valve core sleeve.
Advantageously, a first sealing groove 2016 for sealing the grinding wheel pair 202 is arranged on the inner wall of the bottom of the valve core sleeve 201; and a second sealing groove 2014 which is radially sealed with the valve body 1 is arranged on the outer wall of the valve body. The outer wall of the valve core sleeve can be provided with two groups of second sealing grooves at the top and the bottom respectively, and the second sealing grooves are used for sealing with the cylindrical surface of the inner cavity of the valve body to prevent upper and lower leakage. O-shaped ring seals are arranged in the first sealing groove and the second sealing groove.
More advantageously, a first pin hole 2012 and a mounting hole 2017 are formed in the bottom end of the valve plug sleeve 201 around the medium outlet 2011; the bottom of the fixed grinding wheel 2021 is provided with a second pin hole corresponding to the first pin hole 2012 and connected with the first pin hole 203; the mounting hole 2017 is internally provided with a rubber column 204. The second pin holes are blind holes, two groups of the first pin holes and two groups of the second pin holes can be used for mounting and positioning, a plurality of mounting holes are formed, and each mounting hole is internally provided with a rubber column; therefore, the fixed grinding wheel is positioned with the bottom of the valve core sleeve through the first pin shaft and is pressed on the plurality of rubber columns, and the pressing force between the fixed grinding wheel and the movable grinding wheel is kept in a proper range.
In the embodiment of the present invention, a third pin hole is formed at the top of the movable grinding wheel 2022, and the bottom of the valve rod 205 is fixed to the third pin hole by a second pin 2031. The movable grinding wheel is connected with the valve rod through a second pin shaft and can rotate along with the valve rod; the movable grinding wheel and the fixed grinding wheel are sealed through a contact surface plane, when the movable grinding wheel and the fixed grinding wheel are rotated to be communicated with each other through a circulation channel, an inner cavity of the valve body is communicated, the flow channel dead against area is enlarged along with the increase of the rotation angle of the valve rod, and the flow rate is increased. The fixed grinding wheel and the movable grinding wheel can be made of stainless steel materials.
Referring to fig. 2, the top of the valve rod 205 penetrates through the top of the valve core sleeve 201, a bearing sleeve 207 is arranged at the top of the valve core sleeve 201, and a thrust bearing 206 which rotates with the valve rod 205 is installed in the bearing sleeve 207; the bearing sleeve 207 and the valve core sleeve 201 are radially sealed through a sealing ring 208. The thrust bearing 206 is a standard component, the bearing housing 207 is annular, and the inner and outer cylindrical surfaces are provided with sealing ring grooves for sealing purposes.
The plug 3 is screwed with the thread in the fixed cavity of the valve body 1, and applies a certain pressure to the grinding wheel pair 202 through the bearing sleeve 207, the thrust bearing 206 and the valve rod 205, so that the sealing effect is ensured, and the valve can be opened and closed normally. The sealing ring 208 is preferably, but not limited to, a rubber O-ring.
In another embodiment of the present invention, the valve body 1 and the valve core sleeve 201 are correspondingly provided with a first positioning groove 104 and a second positioning groove 2015, and the first positioning groove 104 and the second positioning groove 2015 are fixed by positioning portions. The positioning part is inserted into the positioning grooves of the valve body and the valve core sleeve, so that the valve core sleeve can be prevented from rotating and the bearing sleeve can be prevented from falling off when the valve core assembly is disassembled; the fixing part can adopt a flat key, and the flat key is fixed in the first positioning groove and the second positioning groove through locking screws.
In practical use, a plurality of stud holes can be added to the valve body fixing cavity according to the connection mode of the connected actuator, and since the connection mechanism is not an improvement point of the technical scheme, the connection mechanism is not specifically described here and is not shown in the figures.
According to the grinding wheel valve with the integrally detachable valve core, the whole valve core assembly can be taken out and replaced or damaged parts can be replaced and then the valve core assembly can be installed again only by unscrewing the plug, the valve core is strong in universality and is greatly convenient to maintain, the service life of the valve body is prolonged, and the use cost can be greatly reduced.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (7)
1. A grinding wheel valve with a valve core capable of being integrally disassembled is characterized by comprising:
the valve body (1), the valve body (1) is provided with a fixed cavity, a fluid inlet cavity (103) and a fluid outlet cavity which are communicated with each other in sequence from top to bottom; and the side wall of the device is provided with an inlet flow channel (101) and an outlet flow channel (102) respectively corresponding to the fluid inlet cavity (103) and the fluid outlet cavity; the top of the fixed cavity is open;
the valve core assembly (2), the valve core assembly (2) comprises a valve core sleeve (201), a grinding wheel pair (202) and a valve rod (205); the valve core sleeve (201) is hermetically arranged in the fluid inlet cavity (103), the grinding wheel pair (202) is arranged at the inner bottom of the valve core sleeve, the grinding wheel pair (202) comprises a fixed grinding wheel (2021) with a flow passage and a movable grinding wheel (2022), the movable grinding wheel (2022) rotates along with the valve rod (205), and the communication or cut-off state of the flow passage on the fixed grinding wheel (2021) and the movable grinding wheel (2022) is changed;
the central hole of the plug (3) penetrates through the top of the valve rod (205); the outer wall of the fixing cavity is in threaded connection with the inner wall of the fixing cavity.
2. The grinding wheel valve with the integrally detachable valve core as claimed in claim 1, wherein the valve core sleeve (201) is a cylinder with an open top, the middle of the side wall of the cylinder is provided with a medium inlet (2013) communicated with the fluid inlet chamber, and the central hole at the bottom end of the cylinder is provided with a medium outlet (2011) communicated with the fluid outlet chamber.
3. The grinding wheel valve with the integrally detachable valve core as claimed in claim 2, wherein a first sealing groove (2016) for sealing the grinding wheel pair (202) is arranged on the inner wall of the bottom of the valve core sleeve (201); and a second sealing groove (2014) which is radially sealed with the valve body (1) is arranged on the outer wall of the valve body.
4. The grinding wheel valve with the integrally detachable valve core as claimed in claim 2, wherein a first pin hole (2012) and a mounting hole (2017) are arranged at the bottom end of the valve core sleeve (201) around the medium outlet (2011); the bottom of the fixed grinding wheel (2021) is provided with a second pin hole corresponding to the first pin hole (2012) and connected through a first pin shaft (203); and a rubber column (204) is arranged in the mounting hole (2017).
5. The grinding wheel valve with the integrally detachable valve core as claimed in claim 4, wherein a third pin hole is formed at the top of the movable grinding wheel (2022), and the bottom of the valve rod (205) is fixed with the third pin hole through a second pin shaft (2031).
6. The grinding wheel valve with the integrally detachable valve core according to claim 4, characterized in that the top of the valve rod (205) penetrates out of the top of the valve core sleeve (201), a bearing sleeve (207) is arranged at the top of the valve core sleeve (201), and a thrust bearing (206) rotating with the valve rod (205) is installed in the bearing sleeve (207); the bearing sleeve (207) and the valve core sleeve (201) are radially sealed through a sealing ring (208).
7. The grinding wheel valve with the integrally detachable valve core according to claim 4, wherein a first positioning groove (104) and a second positioning groove (2015) are correspondingly arranged on the valve body (1) and the valve core sleeve (201), and the first positioning groove (104) and the second positioning groove (2015) are fixed by positioning parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011249349.0A CN112228582A (en) | 2020-11-10 | 2020-11-10 | Grinding wheel valve with integrally detachable valve core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011249349.0A CN112228582A (en) | 2020-11-10 | 2020-11-10 | Grinding wheel valve with integrally detachable valve core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112228582A true CN112228582A (en) | 2021-01-15 |
Family
ID=74122373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011249349.0A Pending CN112228582A (en) | 2020-11-10 | 2020-11-10 | Grinding wheel valve with integrally detachable valve core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112228582A (en) |
-
2020
- 2020-11-10 CN CN202011249349.0A patent/CN112228582A/en active Pending
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