CN111780199A - Steel welding heating power inlet backwater device - Google Patents
Steel welding heating power inlet backwater device Download PDFInfo
- Publication number
- CN111780199A CN111780199A CN202010739162.2A CN202010739162A CN111780199A CN 111780199 A CN111780199 A CN 111780199A CN 202010739162 A CN202010739162 A CN 202010739162A CN 111780199 A CN111780199 A CN 111780199A
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- China
- Prior art keywords
- filtering
- sleeve
- steel welding
- filter screen
- ball valve
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- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 25
- 239000010959 steel Substances 0.000 title claims abstract description 25
- 238000010438 heat treatment Methods 0.000 title claims description 6
- 238000001914 filtration Methods 0.000 claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- 238000009826 distribution Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
- B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
- B01D29/6407—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes
- B01D29/6415—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element brushes with a rotary movement with respect to the filtering element
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/0092—Devices for preventing or removing corrosion, slime or scale
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a steel welding heat power inlet water return device which comprises a front end welding ball valve, a front end pressure gauge assembly, a steel welding pressure difference control valve, a rear end pressure gauge assembly and a rear end welding ball valve which are sequentially connected in a conduction mode through connecting pipelines, wherein a cross-shaped filtering pipeline is communicated between the connecting pipelines positioned at the front end of the front end welding ball valve, a filtering sleeve is arranged at the cross-shaped intersection of the filtering pipelines, and two ends of the filtering sleeve are detachably connected with a filtering net. According to the invention, the incomplete bevel gears on the motor are driven to rotate by the output shaft of the motor, the two incomplete bevel gears on the rotating shaft are driven to intermittently rotate according to the meshing transmission principle of the latch, and the rotation directions are opposite, so that the reciprocating rotation of the rotating shaft is realized, and the cleaning brushes at the two ends of the rotating shaft are driven to reciprocate on the surface of the filter screen, so that impurities on the surface of the filter screen are cleaned, the meshes are prevented from being blocked by the impurities, the filtering effect and the filtering efficiency are improved, and the service life of the filter screen is.
Description
Technical Field
The invention relates to the technical field of heat supply, in particular to a steel welding heat inlet water returning device.
Background
The thermal inlet facility of a building is a system in which a heating system connects an external grid to the inside of the building. The heating power inlet facility is divided into a water return device and a water return device, has the functions of shutoff, filtration, pollution discharge, regulation, observation and the like, and is arranged in a building inlet valve well or a staircase.
In the prior publication No. CN206160253U (integrated heat inlet water return device), "welded ball valve, five-way regulating valve, etc. are all welded integrated parts, which makes six functions of cutting off, filtering, discharging, regulating, observing and heat preservation integrated, thus, flanges and bolts are removed, the pipeline is easy to preserve heat and reduce a large amount of heat load, the heating system reduces a large amount of heat loss, thereby reducing coal consumption and electricity consumption of heat supply, and is beneficial to heat supply energy conservation and emission reduction, the water return device is provided with a tee joint, which can realize the connection of the water return device and the water return device by a hose and reduce construction cost and construction cost as a bypass pipeline.
However, because the supplied hot water contains impurities such as large particles, the water return device is often blocked, and the commonly adopted method is to add a filtering device into the water return device, firstly, when the filtering device is used, the meshes of an internal filter screen are blocked by the impurities, so that the filtering effect and the filtering efficiency are influenced, and therefore, the steel welding heat inlet water return device convenient for impurity cleaning is lacked.
Disclosure of Invention
The invention aims to solve the problems and provides a steel welding heat inlet water returning device.
In order to achieve the purpose, the invention adopts the following technical scheme:
the steel welding heat power inlet backwater device comprises a front end welding ball valve, a front end pressure gauge component, a steel welding pressure difference control valve, a rear end pressure gauge component and a rear end welding ball valve which are sequentially connected in a conduction mode through connecting pipelines, a cross-shaped filtering pipeline is communicated between the connecting pipelines positioned at the front end of the front end welding ball valve, a filtering sleeve is arranged at the cross-shaped intersection of the filtering pipeline, two ends of the filtering sleeve are detachably connected with filtering screens, a motor is arranged at the top of the vertical pipeline of the filtering pipeline, two fixing blocks are fixedly connected on the inner surface wall at the bottom of the filtering sleeve, a rotating shaft is rotatably arranged between the fixed blocks through a bearing, two ends of the rotating shaft are fixedly connected with cleaning brushes which are contacted with the surface of the filter screen, the output shaft of the motor penetrates through the filtering pipeline and the filtering sleeve, and the extending end of the motor and the outer side of the rotating shaft are respectively sleeved with an incomplete bevel gear in meshed connection.
As a further description of the above technical solution:
the rotating shaft is provided with two incomplete bevel gears which are symmetrically arranged about the axis of the motor output shaft, and the distribution positions of the clamping teeth are consistent.
As a further description of the above technical solution:
and the outer side of the bottom of the vertical pipeline of the filtering pipeline is connected with an end cover in a screwing way through threads.
As a further description of the above technical solution:
and a support rod is rotatably arranged between the inner surface wall at the bottom of the end cover and the outer surface wall at the bottom of the filter sleeve through a bearing.
As a further description of the above technical solution:
the top of the filtering sleeve is penetrated with a limiting bolt, and the bottom of the limiting bolt is rotatably connected with a limiting block abutted against the surface of the filter screen through a bearing.
As a further description of the above technical solution:
the filter sleeve both ends all have the recess that holds the filter screen, set up the groove of stepping down that holds the stopper on the interior table wall of filter sleeve.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, the incomplete bevel gears on the motor are driven to rotate by the output shaft of the motor, the two incomplete bevel gears on the rotating shaft are driven to intermittently rotate according to the meshing transmission principle of the latch, and the rotation directions are opposite, so that the reciprocating rotation of the rotating shaft is realized, and the cleaning brushes at the two ends of the rotating shaft are driven to reciprocate on the surface of the filter screen, so that impurities on the surface of the filter screen are cleaned, the meshes are prevented from being blocked by the impurities, the filtering effect and the filtering efficiency are improved, and the service life of the filter screen is.
2. According to the filter sleeve, the end cover is rotated to take the filter sleeve out of the filter pipeline, so that the filter screen can be replaced conveniently, the position of the limiting block in the vertical direction can be adjusted by adjusting the limiting bolt, the limiting block accommodating groove is formed in the inner surface wall of the filter sleeve, the limiting block is adjusted to enter the limiting groove, and the limitation on the filter screen is removed, so that the filter screen can be detached and replaced conveniently, the structure is simple, and the operation is convenient.
3. According to the invention, the limiting blocks limit the horizontal movement of the filter screen in the groove, so that the purpose of fixing the filter screen in the groove is realized, and the two limiting blocks are symmetrically arranged relative to the axial lead of the filter screen, so that the stability of the filter screen is improved.
Drawings
FIG. 1 is a schematic front view of a steel welding heat inlet water return device according to the present invention;
FIG. 2 is a schematic view of the internal structure of a filter pipeline of the steel welding heat inlet water return device in the invention;
FIG. 3 is a schematic view of the internal structure of a filter sleeve of the steel welding heat inlet water return device of the present invention;
FIG. 4 is a schematic side view at A-A of a steel welded heat inlet water return apparatus of the present invention;
FIG. 5 is a schematic view of the meshing connection of the incomplete bevel gears of the steel welding heat inlet water returning device of the present invention;
FIG. 6 is a schematic side view at B-B of the steel welded heat inlet water return apparatus of the present invention.
Illustration of the drawings:
1. a steel welding differential pressure control valve; 2. the front end is welded with a ball valve; 3. the rear end is welded with a ball valve; 4. a front end pressure gauge assembly; 5. a back end pressure gauge assembly; 6. a filtration pipeline; 7. a motor; 8. a filter cartridge; 801. a yielding groove; 802. a groove; 9. an end cap; 10. a support bar; 11. a limit bolt; 12. a limiting block; 13. filtering with a screen; 14. a cleaning brush; 15. a fixed block; 16. a rotating shaft; 17. not a full bevel gear.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
referring to fig. 1-6, a steel welding heat power inlet water returning device comprises a front end welding ball valve 2, a front end pressure gauge component 4, a steel welding pressure difference control valve 1, a rear end pressure gauge component 5 and a rear end welding ball valve 3 which are sequentially connected in a conducting manner through connecting pipes, a cross-shaped filtering pipe 6 is communicated between the connecting pipes at the front end of the front end welding ball valve 2, a filtering sleeve 8 is arranged at the cross-shaped intersection of the filtering pipe 6, filter screens 13 are detachably connected at two ends of the filtering sleeve 8, impurities entering the rear end water returning device are filtered through the filter screens 13, the fault problem of the water returning device caused by the blockage of the pipe or the valve due to the impurities is reduced, the service time of the water returning device is prolonged, the maintenance frequency of the water returning device is reduced, the maintenance cost is reduced, a motor 7 is installed at the top of the vertical pipe of the filtering pipe 6, and the power source of the, the starting and stopping are controlled by an external power supply control switch, two fixed blocks 15 are fixedly connected on the inner surface wall of the bottom of the filtering sleeve 8, a rotating shaft 16 is rotatably arranged between the fixed blocks 15 through a bearing, two ends of the rotating shaft 16 are fixedly connected with cleaning brushes 14 contacted with the surface of the filtering net 13, the output shaft of the motor 7 penetrates through the filtering pipeline 6 and the filtering sleeve 8, the extending end of the motor 7 and the outer side of the rotating shaft 16 are respectively sleeved with an incomplete bevel gear 17 in meshed connection, the rotating shaft 16 is provided with two incomplete bevel gears 17 which are symmetrically arranged about the axis of the output shaft of the motor 7, the distribution positions of the clamping teeth are consistent, the incomplete bevel gear 17 on the output shaft of the motor 7 is always in meshed transmission with one incomplete bevel gear 17 on the rotating shaft 16, the two incomplete bevel gears 17 on the rotating shaft 16 are in opposite rotation, according to the meshing transmission principle of latch, the rotation of the incomplete bevel gear 17 intermittent type nature of drive both sides, and turn to opposite to at first 16 reciprocal rotations of pivot, drive cleaning brush 14 at filter screen 13 surface reciprocal rotation, clear up the impurity on filter screen 13 surface, prevent that impurity from blockking up the mesh, improve filter effect and filtration efficiency, and then improve filter screen 13's life.
Example two:
different from the first embodiment
Please refer to fig. 2, the bottom outside of the vertical pipeline of the filtering pipeline 6 is connected with the end cover 9 through the screw thread, the joint of the end cover 9 and the filtering pipeline 6 is provided with the sealing ring, thereby improving the effect of the end cover 9 for preventing the fluid from overflowing, the inner surface wall of the bottom of the end cover 9 and the outer surface wall of the bottom of the filtering sleeve 8 are rotatably installed with the support rod 10 through the bearing, and then the filtering sleeve 8 is taken out from the filtering pipeline 6 through the rotating end cover 9, so as to replace the filtering net 13, the structure is simple, the operation is convenient, wherein, the rotation connection can not drive the filtering sleeve 8 to rotate when the end cover 9 rotates.
Example three:
different from the first embodiment
Please refer to fig. 2-4, a limiting bolt 11 penetrates through the top of the filtering sleeve 8, the bottom of the limiting bolt 11 is rotatably connected with a limiting block 12 abutted against the surface of the filtering net 13 through a bearing, both ends of the filtering sleeve 8 are provided with grooves 802 for accommodating the filtering net 13, the limiting block 12 limits the horizontal movement of the filtering net 13 in the grooves 802, thereby realizing the fixing purpose of the filtering net 13 in the grooves 802, two limiting blocks 12 are provided at symmetrical positions relative to the axial lead of the filtering net 13, the stability of the filtering net 13 is improved, the position adjustment of the limiting block 12 in the vertical direction is realized by adjusting the limiting bolt 11, a yielding groove 801 for accommodating the limiting block 12 is provided on the inner surface wall of the filtering sleeve 8, the limiting block 12 is adjusted to enter the yielding groove 801, the limitation of the filtering net 13 is removed, thereby facilitating the removal and replacement of the filtering net 13, the.
The working principle is as follows: when the water return device is used, the incomplete bevel gears 17 on the motor 7 are driven to rotate by the output shaft of the motor 7, according to the meshing transmission principle of the latch, the two incomplete bevel gears 17 on the rotating shaft 16 are driven to rotate intermittently, and the rotation directions are opposite, so that the reciprocating rotation of the rotating shaft 16 is realized, the cleaning brushes 14 at the two ends of the rotating shaft are driven to rotate on the surface of the filter screen 13 in a reciprocating manner, impurities on the surface of the filter screen 13 are cleaned, the meshes are prevented from being blocked by the impurities, the filtering effect and the filtering efficiency are improved, and the service life of the filter screen 13 is prolonged;
when the filter screen 13 needs to be replaced, firstly, the end cover 9 is screwed down, the filter sleeve 8 is taken out from the filter pipeline 6, then the limit bolt 11 is screwed out upwards, the limit block 12 is driven to enter the abdicating groove 801, so that the horizontal limit of the filter screen 13 in the groove 802 is removed, the filter screen 13 is conveniently taken down, a new filter screen 13 is replaced, the working principle is repeated, the limit bolt 11 is screwed down, and the end cover 9 is screwed up, namely, the disassembly and replacement actions of the filter screen 13 are completed, the structure is simple, and the operation is convenient.
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 (6)
1. Steel welding heating power entry backwater device, including front end welding ball valve (2), front end pressure gauge subassembly (4), steel welding differential pressure control valve (1), rear end pressure gauge subassembly (5) and rear end welding ball valve (3) through connecting tube turn-on connection in proper order, its characterized in that, be located front end welding ball valve (2) front end the intercommunication is provided with between the connecting tube and is criss-cross filtration pipeline (6), filtration pipeline (6) cross mouth department is equipped with filtering sleeve (8), filtering sleeve (8) both ends detachable connection has filter screen (13), motor (7) are installed at the vertical pipeline top of filtering pipeline (6), fixedly connected with two fixed blocks (15) on the inner surface wall in filtering sleeve (8) bottom, install pivot (16) through the bearing rotation between fixed block (15), the both ends fixedly connected with of pivot (16) and filter screen (13) surface contact's cleaning brush (14), the output shaft of motor (7) runs through filtering duct (6) and filters sleeve (8), and its outside of extending end and pivot (16) all cup joints incomplete bevel gear (17) that the meshing is connected.
2. The steel welding heat inlet water returning device according to claim 1, characterized in that the rotating shaft (16) is provided with two incomplete bevel gears (17) which are symmetrically arranged about the axis of the output shaft of the motor (7), and the distribution positions of the clamping teeth are consistent.
3. The steel welding heat inlet water return device according to claim 1, characterized in that the bottom outside of the vertical pipe of the filtering pipe (6) is screwed with an end cap (9).
4. The steel welding heat inlet water returning device according to claim 3, characterized in that a support rod (10) is rotatably arranged between the inner surface wall at the bottom of the end cover (9) and the outer surface wall at the bottom of the filtering sleeve (8) through a bearing.
5. The steel welding heat inlet water returning device according to claim 1, wherein a limiting bolt (11) penetrates through the top of the filtering sleeve (8), and a limiting block (12) abutted against the surface of the filtering net (13) is rotatably connected to the bottom of the limiting bolt (11) through a bearing.
6. The steel welding heat inlet backwater device according to claim 1, characterized in that grooves (802) for accommodating the filter screen (13) are formed at two ends of the filter sleeve (8), and a yielding groove (801) for accommodating the limiting block (12) is formed in the inner surface wall of the filter sleeve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010739162.2A CN111780199A (en) | 2020-07-28 | 2020-07-28 | Steel welding heating power inlet backwater device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010739162.2A CN111780199A (en) | 2020-07-28 | 2020-07-28 | Steel welding heating power inlet backwater device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111780199A true CN111780199A (en) | 2020-10-16 |
Family
ID=72766058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010739162.2A Pending CN111780199A (en) | 2020-07-28 | 2020-07-28 | Steel welding heating power inlet backwater device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111780199A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113587434A (en) * | 2021-09-06 | 2021-11-02 | 精福科技(深圳)有限公司 | Domestic hot water circulation water return device convenient to maintenance |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01215319A (en) * | 1988-02-23 | 1989-08-29 | Japan Tobacco Inc | Filter device |
| CN106524273A (en) * | 2016-11-08 | 2017-03-22 | 马景岗 | Water supply device integrated with integral heat entrance |
| CN110721510A (en) * | 2019-11-22 | 2020-01-24 | 国网河南省电力公司南阳供电公司 | A water flow treatment system for hydroelectric power equipment |
| CN210141329U (en) * | 2019-04-10 | 2020-03-13 | 盐城龙威机械有限公司 | Gate valve with detachable filter screen |
| CN111235932A (en) * | 2020-03-27 | 2020-06-05 | 安徽万能环保科技有限公司 | Paper pulp filtering and dewatering device |
| CN212299133U (en) * | 2020-07-28 | 2021-01-05 | 汉工阀门股份有限公司 | Steel welding heating power inlet backwater device |
-
2020
- 2020-07-28 CN CN202010739162.2A patent/CN111780199A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01215319A (en) * | 1988-02-23 | 1989-08-29 | Japan Tobacco Inc | Filter device |
| CN106524273A (en) * | 2016-11-08 | 2017-03-22 | 马景岗 | Water supply device integrated with integral heat entrance |
| CN210141329U (en) * | 2019-04-10 | 2020-03-13 | 盐城龙威机械有限公司 | Gate valve with detachable filter screen |
| CN110721510A (en) * | 2019-11-22 | 2020-01-24 | 国网河南省电力公司南阳供电公司 | A water flow treatment system for hydroelectric power equipment |
| CN111235932A (en) * | 2020-03-27 | 2020-06-05 | 安徽万能环保科技有限公司 | Paper pulp filtering and dewatering device |
| CN212299133U (en) * | 2020-07-28 | 2021-01-05 | 汉工阀门股份有限公司 | Steel welding heating power inlet backwater device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113587434A (en) * | 2021-09-06 | 2021-11-02 | 精福科技(深圳)有限公司 | Domestic hot water circulation water return device convenient to maintenance |
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| CB03 | Change of inventor or designer information |
Inventor after: Xiang Shanshan Inventor after: Xiang Shiyan Inventor after: Li Haichao Inventor after: Chen Sihan Inventor before: Xiang Binbin Inventor before: Xiang Shiyan Inventor before: Li Haichao Inventor before: Chen Sihan |
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