CN111734839A - Bypass valve with filtering capability - Google Patents
Bypass valve with filtering capability Download PDFInfo
- Publication number
- CN111734839A CN111734839A CN201910227800.XA CN201910227800A CN111734839A CN 111734839 A CN111734839 A CN 111734839A CN 201910227800 A CN201910227800 A CN 201910227800A CN 111734839 A CN111734839 A CN 111734839A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- valve
- connecting pipe
- valve body
- close
- 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.)
- Pending
Links
- 238000001914 filtration Methods 0.000 title claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 24
- 239000012535 impurity Substances 0.000 abstract description 10
- 239000007788 liquid Substances 0.000 abstract description 6
- OKTJSMMVPCPJKN-NJFSPNSNSA-N Carbon-14 Chemical class [14C] OKTJSMMVPCPJKN-NJFSPNSNSA-N 0.000 description 7
- 238000001125 extrusion Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Images
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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/02—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration
- B01D24/10—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof with the filter bed stationary during the filtration the filtering material being held in a closed container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating means
-
- 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
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0663—Packings
- F16K5/0694—Spindle sealings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention relates to the technical field of valve devices, in particular to a bypass valve with a filtering function. According to the invention, the fixed ring plate is arranged at one end of the first connecting pipe close to the interior of the sleeve, the grid cover is fixedly arranged at one side of the outer side wall of the fixed ring plate close to the first connecting pipe, activated carbon is filled in the grid cover, the grid plate is arranged at one side of the outer side wall of the fixed ring plate far away from the grid cover, liquid flowing through the bypass valve is filtered by the activated carbon filled in the grid cover, impurities in water are filtered, so that the impurity adhesion residue in the bypass valve is reduced, the influence on the valve switch is reduced, meanwhile, the sleeve is in threaded connection with the first connecting pipe, later-stage disassembly and assembly are facilitated, the fixed ring plate and the grid cover are taken out together at regular intervals, the activated carbon filled in the grid cover is replaced.
Description
Technical Field
The invention relates to the technical field of valve devices, in particular to a bypass valve with a filtering function.
Background
The bypass valve is a valve arranged on a bypass pipe of a water inlet valve pipe section, and is used for filling water to balance the water pressure in front of and behind the water inlet valve, for example, a pressure reducing valve, a control valve and a steam trap valve are usually additionally provided with the bypass pipe, the valve arranged on the bypass pipe is called the bypass valve, the term of the bypass valve refers to the valve arranged on the bypass pipe, but is not particularly limited to the type and the structure of the valve, and the bypass valve is also called a self-operated bypass differential pressure valve and a self-operated self-.
In the use process of the existing bypass valve, as the flowing liquid is often accompanied with partial impurities, the impurities are remained in the valve, so that the valve is not tightly opened and closed, the valve is not functional, the service life is short, and the bypass valve with the filtering function is provided for the purpose.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a bypass valve with a filtering function.
In order to achieve the purpose, the invention adopts the following technical scheme:
a bypass valve with a filtering function is designed, and comprises a valve body, wherein a first connecting pipe is fixedly installed at the left end of the valve body, a second connecting pipe is fixedly installed at the right end of the valve body, a sleeve is sleeved at one end, far away from the valve body, of the first connecting pipe and the second connecting pipe, a first sealing ring is installed at one side, close to the valve body, of the sleeve, a shaft sleeve is fixedly installed at the middle part of the upper surface of the valve body, a handle is installed at the upper end of the shaft sleeve, two movable sliding blocks are symmetrically installed at the edge of the bottom surface of the handle, close to the outer side wall of the shaft sleeve, a limiting block is fixedly installed at the middle part in front of the outer side wall of the shaft sleeve, a valve seat is fixedly installed at the inner side wall of an inner accommodating cavity of the, the upper surface mid-mounting of valve ball has the valve rod, the valve rod runs through the valve body, the lateral wall of valve rod is close to the inside cover of valve body is equipped with the second sealing washer, the upper end of valve rod with handle fixed connection, the internally mounted of axle sleeve has sealed piece, the valve rod runs through sealed piece, the lateral wall of valve rod is close to the inside cover of axle sleeve is equipped with the bearing.
Preferably, the first connecting pipe is close to the one end of the inside of the sleeve pipe and is provided with a fixed ring plate, the outer side wall of the fixed ring plate is close to one side of the first connecting pipe and is fixedly provided with a grid cover, activated carbon is filled in the grid cover, the outer side wall of the fixed ring plate is far away from one side of the grid cover and is provided with a grid plate, and the grid plate and the fixed ring plate are fixed through clamping and connecting of a buckle.
Preferably, the sleeve pipe still includes clamping ring, sleeve pipe outer joint and cover seat, the cover seat with sleeve pipe outer joint fixed connection, the cover seat is kept away from one side fixed mounting of sleeve pipe outer joint has the clamping ring, the size of a dimension of sleeve pipe outer joint with first connecting pipe with sheathed tube joint size of a dimension equals, the inside wall of cover seat is provided with the internal thread, the sleeve pipe with first connecting pipe passes through thread fixed connection.
Preferably, the cross section of the first sealing ring is Z-shaped, and the first sealing ring is sleeved at the joint of the first connecting pipe.
Preferably, the lower end of the rotating column is spherical, a spherical groove is formed in the middle of the bottom surface of the cavity in the valve body, and the lower end of the rotating column is accommodated in the spherical groove.
The bypass valve with the filtering function has the advantages that:
the invention installs a fixed ring plate at one end of a first connecting pipe close to the inside of a sleeve, a grid cover is fixedly installed at one side of the outer side wall of the fixed ring plate close to the first connecting pipe, activated carbon is filled in the grid cover, a grid plate is installed at one side of the outer side wall of the fixed ring plate far away from the grid cover, liquid flowing through a bypass valve is filtered by the activated carbon filled in the grid cover, impurities in water are filtered, thereby reducing the attachment and residue of the impurities in the bypass valve and reducing the influence on the valve switch, meanwhile, the sleeve is connected with the first connecting pipe through threads, so that the later-stage disassembly and assembly are convenient, the fixed ring plate and the grid cover are taken out together at regular intervals, the activated carbon filled in the grid cover is replaced, the service life of the bypass valve is greatly prolonged, in addition, a first sealing ring is installed at one side of the sleeve close to a valve body, the section of, utilize the clamping ring extrusion first sealing washer that the sleeve pipe lateral wall set up for first sealing washer hugs closely inside the recess that the solid fixed ring surface that sets up at first connecting pipe joint lateral wall set up seted up, increases the leakproofness that sleeve pipe and first connecting pipe are connected.
Drawings
FIG. 1 is a schematic front view of a bypass valve with a filtering function according to the present invention;
FIG. 2 is a schematic sectional view of a bypass valve with a filtering function according to the present invention;
fig. 3 is a schematic structural diagram of a sleeve in the bypass valve with the filtering function according to the present invention.
In the figure: the device comprises a first connecting pipe 1, a first sealing ring 2, a sleeve 3, a second connecting pipe 4, a valve body 5, a movable sliding block 6, a handle 7, a limiting block 8, a shaft sleeve 9, a valve seat 10, a grid plate 11, a fixed ring plate 12, a grid cover 13, activated carbon 14, a rotating column 15, a water through hole 16, a valve ball 17, a valve rod 18, a sealing block 19, a second sealing ring 20, a bearing 21, a pressing ring 22, a sleeve outer joint 23 and a sleeve seat 24.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-3, a bypass valve with a filtering function comprises a valve body 5, a first connecting pipe 1 is fixedly installed at the left end of the valve body 5, a fixed ring plate 12 is installed at one end of the first connecting pipe 1 close to the inside of a sleeve 3, a grid cover 13 is fixedly installed at one side of the outer side wall of the fixed ring plate 12 close to the first connecting pipe 1, activated carbon 14 is filled in the grid cover 13, a grid plate 11 is installed at one side of the outer side wall of the fixed ring plate 12 far away from the grid cover 13, the grid plate 11 and the fixed ring plate 12 are fixed in a clamping and connecting mode through a buckle, liquid flowing through the bypass valve is filtered by the activated carbon 14 filled in the grid cover 13, impurities in water are filtered, accordingly, the impurity adhesion and residue inside the bypass valve are reduced, the influence on a valve switch is reduced, meanwhile, the sleeve 3 is in threaded connection with the first connecting pipe 1, later-stage disassembly, the active carbon 14 filled in the grid cover 13 is replaced, so that the service life of the bypass valve is greatly prolonged.
The right end of the valve body 5 is fixedly provided with a second connecting pipe 4, one ends of the first connecting pipe 1 and the second connecting pipe 4 far away from the valve body 5 are respectively sleeved with a sleeve 3, the sleeve 3 further comprises a press ring 22, a sleeve outer joint 23 and a sleeve seat 24, the sleeve seat 24 is fixedly connected with the sleeve outer joint 23, one side of the sleeve seat 24 far away from the sleeve outer joint 23 is fixedly provided with the press ring 22, the size of the sleeve outer joint 23 is equal to the size of the joints of the first connecting pipe 1 and the sleeve 3, the inner side wall of the sleeve seat 24 is provided with an internal thread, the sleeve 3 is fixedly connected with the first connecting pipe 1 through the inner side wall of the sleeve seat 24, the later-stage disassembly and assembly are convenient, the size of the sleeve outer joint 23 is equal to the sizes of the joints of the first connecting pipe 1 and the sleeve 3, and therefore, is convenient to use.
The first sealing ring 2 is installed to one side that the sleeve pipe 3 is close to the valve body 5, and the cross-section of first sealing ring 2 is the Z type, and the 2 covers of first sealing ring are established at the joint position of first connecting pipe 1, utilizes the clamping ring 22 extrusion first sealing ring 2 of 3 lateral walls settings of sleeve pipe for first sealing ring 2 hugs closely inside the recess that the solid fixed ring surface that sets up at 1 joint lateral wall of first connecting pipe was seted up, increases the leakproofness that sleeve pipe 3 and first connecting pipe 1 are connected.
Fixed mounting has axle sleeve 9 at the upper surface of valve body 5, handle 7 is installed to axle sleeve 9's upper end, the bottom surface edge of handle 7 is close to axle sleeve 9's lateral wall symmetry and installs two and moves slider 6, axle sleeve 9's lateral wall the place ahead middle part fixed mounting has stopper 8, 5 inside wall fixed mounting who holds the chamber of valve body has disk seat 10, the internally mounted of disk seat 10 has valve ball 17, water hole 16 has been seted up to valve ball 17's inside, valve ball 17's bottom surface mid-mounting has rotation post 15, the lower extreme of rotation post 15 is globular, 5 inside bottom surface middle parts that holds the chamber of valve body have seted up spherical recess, the lower extreme of rotation post 15 holds inside spherical recess, utilize rotation post 15 and spherical recess's cooperation, make valve ball.
Valve rod 18 is installed to the upper surface mid-mounting of valve ball 17, and valve rod 18 runs through valve body 5, and the inside cover that the lateral wall of valve rod 18 is close to valve body 5 is equipped with second sealing washer 20, and the upper end and the handle 7 fixed connection of valve rod 18, the internally mounted of axle sleeve 9 have seal block 19, and valve rod 18 runs through seal block 19, and the inside cover that the lateral wall of valve rod 18 is close to axle sleeve 9 is equipped with bearing 21.
The working principle is as follows: when in use, the fixed ring plate 12 is taken up by hand, the grid cover 13 is inserted into the first connecting pipe 1, then the activated carbon 14 is filled into the grid cover 13, the grid plate 11 is clamped on the outer surface of the fixed ring plate 12 by utilizing the buckle, then the first sealing ring 2 is sleeved at the joint position of the first connecting pipe 1, then the sleeve 3 is covered on the outer side of the first connecting pipe 1, the fixed connection with the first connecting pipe 1 is realized by virtue of the thread arranged on the inner side wall of the sleeve seat 24, the first sealing ring 2 is extruded by utilizing the pressing ring 22 arranged on the outer side wall of the sleeve 3, so that the first sealing ring 2 is tightly attached to the inner part of the groove arranged on the outer surface of the fixed ring arranged on the outer side wall of the joint of the first connecting pipe 1, the sealing performance of the sleeve 3 and the first connecting pipe 1 is improved, and the other set of grid plate 11, the fixed ring plate 12, the grid cover, later with the bypass valve access that the installation is good use in the bypass pipeline, at the in-process that liquid flows through the bypass valve, utilize active carbon 14 can effectually get rid of the impurity that contains in the liquid to reduce the inside impurity of bypass valve and adhere to and remain, reduce the influence to valve switch, in the use in later stage, the staff regularly takes off the bypass valve, dismantles sleeve pipe 3, changes the active carbon 14 that the inside was filled of net cover 13, guarantees the filtering capability of bypass, increases the life of bypass valve.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. The utility model provides a bypass valve with filtering capability, includes valve body (5), its characterized in that, the left end fixed mounting of valve body (5) has first connecting pipe (1), the right-hand member fixed mounting of valve body (5) has second connecting pipe (4), first connecting pipe (1) with second connecting pipe (4) are kept away from the one end of valve body (5) is all overlapped and is established and install sleeve pipe (3), sleeve pipe (3) are close to one side of valve body (5) is installed first sealing washer (2), the upper surface middle part fixed mounting of valve body (5) has axle sleeve (9), handle (7) are installed to the upper end of axle sleeve (9), the bottom surface edge of handle (7) is close to the lateral wall symmetry of axle sleeve (9) is installed two and is moved slider (6), lateral wall the place ahead middle part fixed mounting of axle sleeve (9) has stopper (8), valve body (5) inside holds the interior inside wall fixed mounting in chamber has disk seat (10), the internally mounted of disk seat (10) has valve ball (17), water hole (16) have been seted up to the inside of valve ball (17), the bottom surface mid-mounting of valve ball (17) has rotation post (15), the upper surface mid-mounting of valve ball (17) has valve rod (18), valve rod (18) run through valve body (5), the lateral wall of valve rod (18) is close to the inside cover of valve body (5) is equipped with second sealing washer (20), the upper end of valve rod (18) with handle (7) fixed connection, the internally mounted of axle sleeve (9) has seal block (19), valve rod (18) run through seal block (19), the lateral wall of valve rod (18) is close to the inside cover of axle sleeve (9) is equipped with bearing (21).
2. The bypass valve with the filtering function according to claim 1, characterized in that a fixed ring plate (12) is installed at one end of the first connecting pipe (1) close to the inside of the casing pipe (3), a grid cover (13) is fixedly installed at one side of the outer side wall of the fixed ring plate (12) close to the first connecting pipe (1), activated carbon (14) is filled in the grid cover (13), a grid plate (11) is installed at one side of the outer side wall of the fixed ring plate (12) far away from the grid cover (13), and the grid plate (11) and the fixed ring plate (12) are fixed through clamping.
3. The bypass valve with the filtering function according to claim 1, wherein the sleeve (3) further comprises a pressing ring (22), an outer sleeve joint (23) and a sleeve seat (24), the sleeve seat (24) is fixedly connected with the outer sleeve joint (23), the pressing ring (22) is fixedly installed on one side, away from the outer sleeve joint (23), of the sleeve seat (24), the size of the outer sleeve joint (23) is equal to that of the first connecting pipe (1) and the sleeve (3), internal threads are arranged on the inner side wall of the sleeve seat (24), and the sleeve (3) is fixedly connected with the first connecting pipe (1) through threads.
4. The bypass valve with filter function according to claim 1, characterized in that the cross section of the first sealing ring (2) is Z-shaped, and the first sealing ring (2) is sleeved on the joint part of the first connecting pipe (1).
5. The bypass valve with the filtering function as recited in claim 1, wherein the lower end of the rotating column (15) is spherical, a spherical groove is formed in the middle of the bottom surface of the cavity inside the valve body (5), and the lower end of the rotating column (15) is accommodated inside the spherical groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910227800.XA CN111734839A (en) | 2019-03-25 | 2019-03-25 | Bypass valve with filtering capability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910227800.XA CN111734839A (en) | 2019-03-25 | 2019-03-25 | Bypass valve with filtering capability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111734839A true CN111734839A (en) | 2020-10-02 |
Family
ID=72645758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910227800.XA Pending CN111734839A (en) | 2019-03-25 | 2019-03-25 | Bypass valve with filtering capability |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111734839A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704649A (en) * | 2022-03-24 | 2022-07-05 | 金博阀门集团股份有限公司 | Multichannel is from switching-over ball valve of blowdown |
-
2019
- 2019-03-25 CN CN201910227800.XA patent/CN111734839A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114704649A (en) * | 2022-03-24 | 2022-07-05 | 金博阀门集团股份有限公司 | Multichannel is from switching-over ball valve of blowdown |
| CN114704649B (en) * | 2022-03-24 | 2023-12-29 | 金博阀门集团股份有限公司 | Multi-channel self-pollution discharge reversing ball valve |
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