CN108825808B - Anti-clogging mud valve - Google Patents
Anti-clogging mud valve Download PDFInfo
- Publication number
- CN108825808B CN108825808B CN201810744162.4A CN201810744162A CN108825808B CN 108825808 B CN108825808 B CN 108825808B CN 201810744162 A CN201810744162 A CN 201810744162A CN 108825808 B CN108825808 B CN 108825808B
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- Prior art keywords
- valve body
- valve
- mud
- cleaning
- vertical portion
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- 238000004140 cleaning Methods 0.000 claims abstract description 78
- 230000000903 blocking effect Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 238000001746 injection moulding Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- BVPWJMCABCPUQY-UHFFFAOYSA-N 4-amino-5-chloro-2-methoxy-N-[1-(phenylmethyl)-4-piperidinyl]benzamide Chemical compound COC1=CC(N)=C(Cl)C=C1C(=O)NC1CCN(CC=2C=CC=CC=2)CC1 BVPWJMCABCPUQY-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C19/00—Other disintegrating devices or methods
-
- 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
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a kind of anti-clogging mud valves, it include the valve body of Cheng Shang type, adjusting cavity is formed inside the vertical portion of the valve body, the inside of the horizontal part of the valve body forms the flowing lumen being connected to adjusting cavity, valve deck is equipped at the top of the vertical portion of the valve body, the valve rod through valve deck is equipped with inside the vertical portion of the valve body, the valve rod is located at one end inside vertical portion equipped with adjusting block, the flowing lumen is located at the inner wall below the vertical portion equipped with cleaning eye, it is equipped with the taper for being crushed mud in the cleaning eye and clears up head, the interior of the flowing lumen is equipped with shifting chute, rack gear is equipped in the shifting chute, one end of the rack gear is connected with the baffle for blocking cleaning eye, the sawtooth of the rack gear is arranged downward, the sawtooth and the gear of the second motor driving shaft end are nibbled；Reach convenient to be crushed the mud being hardened, the purpose for avoiding valve body blocking, ensure that the free air space of flowing lumen and guaranteeing the normal use of mud valve.
Description
Technical field
The present invention relates to valve production application fields, and in particular to anti-clogging mud valve.
Background technique
Valve is the mechanical device of flow, flow direction, pressure and temperature of fluid media (medium) of control circulation etc., and valve is pipeline
Basic component in system.
In the prior art, mud valve is a kind of pipeline control device of common indispensability, for control mud circulation with
It in the circulatory system of closing, will not result in blockage to flowing lumen in the mud process of circulation, when mud stops circulating, due to mud
Slurry in the pasty state, leads to have some materials mud that can be attached in the bottom sidewall of flowing lumen, which, which can dry, is hardened,
Reduce the free air space of flowing lumen, or even result in blockage to the connectivity part of flowing lumen and adjusting cavity, affects the normal of mud valve
It uses.
Summary of the invention
In order to solve the above technical problems, the invention proposes anti-clogging mud valve, with reach it is convenient to the mud being hardened into
Row is broken, the purpose for avoiding valve body blocking, ensure that the free air space of flowing lumen and guaranteeing the normal use of mud valve.
In order to achieve the above objectives, technical scheme is as follows:
A kind of anti-clogging mud valve includes the valve body of Cheng Shang type, forms adjusting cavity, institute inside the vertical portion of the valve body
The inside for stating the horizontal part of valve body forms the flowing lumen being connected to adjusting cavity, is equipped with valve deck, institute at the top of the vertical portion of the valve body
The valve rod being equipped with inside the vertical portion of valve body through valve deck is stated, the valve rod is located at one end inside vertical portion and is equipped with adjusting block,
The flowing lumen is located at the inner wall below the vertical portion equipped with cleaning eye, and the cleaning eye is interior to be equipped with for being crushed mud
Taper clears up head, and taper cleaning head can be moved up and down along the cleaning eye, the taper cleaning head by first motor into
Row driving rotation, the bottom of the first motor have lifting cylinder to be driven, and the interior of the flowing lumen is equipped with movement
Slot, one end of the shifting chute are connected to the cleaning eye, and the shifting chute is used cooperatively with the cleaning eye, the movement
Rack gear is equipped in slot, one end of the rack gear is connected with the baffle for blocking cleaning eye, and the sawtooth of the rack gear is arranged downward,
The sawtooth is engaged with the gear of the second motor driving shaft end, and the rack gear is close to the movement under the action of driving gear
The inner wall of slot.
The present invention is located at adjusting cavity lower sidewalls by the flowing lumen in valve body and opens up cleaning eye, and is arranged in cleaning eye
Taper clears up head, drives cleaning head rotation to be crushed mud using first motor, realizes that taper is cleared up using lifting cylinder
The raising and lowering of head；Realize that baffle moves in shifting chute using rack gear and the second motor, convenient for being blocked to cleaning eye,
Reach convenient to be crushed the mud being hardened, avoids valve body blocking, ensure that the free air space of flowing lumen and guarantee mud valve
Normal use purpose.
Preferably, the horizontal part bottom of the valve body is equipped with mounting rack, the mounting rack includes bottom plate, the bottom
Plate is fixedly connected on the bottom of the valve body by support frame, and the lifting cylinder is arranged on the bottom plate, second electricity
On the support frame that machine is layer adjacent to by fixed link.It ensure that the stabilization of lifting cylinder and the second motor by mounting rack, drop
Low installation difficulty.
Preferably, the top of the horizontal part of the valve body is equipped with the gas hole being obliquely installed, the gas of the gas hole
Stream direction and the mud direction of valve body are consistent, and are connected with air pump by tracheae in the gas hole, and the valve body, which is located at, to be blown
The side wall of stomata is equipped with the fixed frame for fixing the tracheae of air pump, and the tail end bottom of the horizontal part is equipped with discharge port, institute
It states discharge port and is threaded with sealing plug.It is realized by venthole and air pump and is blown into flowing lumen, further convenient for broken
Mud afterwards is blown open, is convenient for cleaning up in broken mud using discharge port.
Preferably, the taper clears up the fixed station and the cleaning being arranged on fixed station that head includes oblate cylindricality
Head ontology, the fixed station are fixedly connected with the end of the drive shaft of first motor, and the fixed station and the cleaning eye cooperate,
And the side of fixed station is coated with rubber pad, and the protrusion of several cones is distributed with outside the taper cleaning head, it is described convex
It rises, cleaning head ontology and fixed station are produced using integral process injection molding.It ensure that fixed station and cleaning using rubber pad
Leakproofness between hole has avoided clast omission, ensure that the fragmentation quality to mud using the protrusion of cone, by convex
Rise, cleaning head ontology and fixed station be molded using integral process, ensure that protrusion, cleaning head ontology use quality,
Reduce the risk of protrusion or cleaning head ontology fracture.
Preferably, the lower section of the shifting chute is equipped with the rectangular channel rotated for sliding tooth wheel, the driving gear exists
Rectangular groove and engagement.
The present invention has the advantage that
1. the present invention is located at adjusting cavity lower sidewalls by the flowing lumen in valve body and opens up cleaning eye, and sets in cleaning eye
Taper cleaning head is set, drives cleaning head rotation to be crushed mud using first motor, realizes that taper is clear using lifting cylinder
Manage the raising and lowering of head；Realize that baffle moves in shifting chute using rack gear and the second motor, convenient for hiding to cleaning eye
Gear reaches convenient and is crushed to the mud being hardened, and avoids valve body blocking, ensure that the free air space of flowing lumen and guarantees mud
The purpose of the normal use of valve.
2. the present invention ensure that the stabilization of lifting cylinder and the second motor by mounting rack, installation difficulty is reduced.
It blows 3. the present invention is realized by venthole and air pump into flowing lumen, is further convenient for blowing broken mud
It opens.
4. the present invention ensure that the leakproofness between fixed station and cleaning eye using rubber pad, clast omission is avoided, benefit
It ensure that the fragmentation quality to mud with the protrusion of cone, by protrusion, cleaning head ontology and fixed station using integrated chemical industry
Skill is molded, and ensure that the use quality of protrusion, cleaning head ontology, reduces the risk of protrusion or cleaning head ontology fracture.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described.
Fig. 1 is the schematic cross-sectional view of anti-clogging mud valve disclosed by the embodiments of the present invention；
Fig. 2 is the structural schematic diagram of baffle in anti-clogging mud valve disclosed by the embodiments of the present invention；
Fig. 3 is the structural schematic diagram that taper clears up head in anti-clogging mud valve disclosed by the embodiments of the present invention；
Number and corresponding component title represented by letter in figure:
1. 6. valve rod of vertical portion 2. adjusting cavity, 3. horizontal part, 4. flowing lumen, 5. valve deck
7. 8. cleaning eye of adjusting block, 9. taper clears up 91. fixed station 92. of head and clears up head ontology
93. 12. shifting chute of raised 10. first motor, 11. lifting cylinder of rubber pad 94., 13. rack gear
14. baffle 15. drives 16. bottom plate of gear, 17. support frame, 18. fixed link, 19. gas hole
20. 21. fixed frame of tracheae, 22. discharge port, 23. sealing plug.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.
The present invention provides anti-clogging mud valves, its working principle is that being located at below adjusting cavity by the flowing lumen in valve body
Side wall opens up cleaning eye, and in cleaning eye be arranged taper clear up head, using first motor drive cleaning head rotation to mud into
Row is broken, and the raising and lowering of taper cleaning head is realized using lifting cylinder；Realize that baffle is moving using rack gear and the second motor
It is moved in dynamic slot, convenient for being blocked to cleaning eye, reaches convenient and the mud being hardened is crushed, avoided valve body blocking, protect
It has demonstrate,proved the free air space of flowing lumen and has guaranteed the purpose of the normal use of mud valve.
Below with reference to embodiment and specific embodiment, the present invention is described in further detail.
As depicted in figs. 1 and 2, a kind of anti-clogging mud valve includes the valve body of Cheng Shang type, the vertical portion 1 of the valve body
Inside forms adjusting cavity 2, and the inside of the horizontal part 3 of the valve body forms the flowing lumen 4 being connected to adjusting cavity, and the valve body erects
It is equipped with valve deck 5 at the top of straight portion, the valve rod 6 through valve deck is equipped with inside the vertical portion of the valve body, the valve rod is located at vertical portion
Internal one end is equipped with adjusting block 7；
The flowing lumen is located at the inner wall below the vertical portion equipped with cleaning eye 8, and interior be equipped with of the cleaning eye is used for
The taper of broken mud clears up head 9, and the taper cleaning head can be moved up and down along the cleaning eye, the taper cleaning head by
First motor 10 carries out driving rotation, and lifting cylinder 11 is arranged at the bottom of the first motor；
The taper clears up the fixed station 91 and the cleaning head ontology 92 being arranged on fixed station that head includes oblate cylindricality,
The fixed station is fixedly connected with the end of the drive shaft of first motor, and the fixed station and the cleaning eye cooperate, and fixed
The side of platform is coated with rubber pad 93, is distributed with the protrusion 94 of several cones outside the taper cleaning head, it is described it is raised,
Cleaning head ontology and fixed station are produced using integral process injection molding；
The interior of the flowing lumen is equipped with shifting chute 12, and one end of the shifting chute is connected to the cleaning eye, and
The shifting chute is used cooperatively with the cleaning eye, and rack gear 13 is equipped in the shifting chute, and one end connection of the rack gear is useful
In the baffle 14 for blocking cleaning eye, the sawtooth of the rack gear is arranged downward, the drive of the sawtooth and the second motor driving shaft end
Moving gear 15 engages, and the rack gear is close to the inner wall of the shifting chute under the action of driving gear；
The horizontal part bottom of the valve body is equipped with mounting rack, and the mounting rack includes bottom plate 16, and the bottom plate passes through branch
Support 17 is fixedly connected on the bottom of the valve body, and the lifting cylinder is arranged on the bottom plate, and second motor passes through
On the support frame that fixed link 18 is layer adjacent to；
The top of the horizontal part of the valve body is equipped with the gas hole 19 being obliquely installed, the airflow direction and valve of the gas hole
The mud direction of body is consistent, and is connected with air pump (not shown) by tracheae 20 in the gas hole, and the valve body, which is located at, to be blown
The side wall of stomata is equipped with the fixed frame 21 for fixing the tracheae of air pump, and the tail end bottom of the horizontal part is equipped with discharge port
22, the discharge port is threaded with sealing plug 23
Of the invention specifically used steps are as follows: again as shown in Figure 1-Figure 3, in actual use, by passing through valve
The valve rod 6 of lid 5 realizes the raising and lowering of adjusting block 7, and then adjusts the flow of mud in flowing lumen 4, flow velocity (arrow table in figure
Show the flow direction of mud in the valve body).
Since mud can be hardened in immobilising situation, in order to avoid the mud after being hardened blocks valve body, do not working
In the case where, make that gear 15 is driven to rotate clockwise after opening by the second motor, moves along the upper of slot 12 with carry-over bar 13
Wall is mobile, makes baffle 16 far from cleaning eye 8 until cleaning eye is completely exposed, lifting cylinder 11 drives in first motor 10 at this time
It rises, while first motor 10 drives taper cleaning head 9 to rotate in uphill process, utilizes the taper knot of taper cleaning head 9 itself
Structure and the several tapered protrusions being distributed on taper cleaning head side wall, realize and are crushed to convenient for the mud being hardened, work as fixation
When the upper edge of platform 91 and the upper edge of cleaning eye are in same position, lifting cylinder stops working, and first motor works on, at this time
Air pump work will be most of using discharge port 22 by tracheae venthole 20 to the tail end (one end that mud flows out) of horizontal part
Mud residue takes out, and remaining part is taken out of when being circulated by mud.
After the completion of cleaning, (those skilled in the art can also extract tracheae the valve on closing cylinder, and in gas hole upper cover
Upper corresponding sealing plug), by 23 precession discharge port 22 of sealing plug, first motor 10 is closed, while lifting cylinder 11 returns
Receive until taper cleaning head 9 far from cleaning eye until, the second motor control drives gear 15 to rotate counterclockwise, with carry-over bar to valve
The tail end of body is mobile until baffle 14 (the inner wall setting that baffle herein is close to the horizontal part) covers all cleaning eye i.e.
Can, mud can normally circulate according to the arrow direction in Fig. 1 at this time.
In entire implementation process, lifting cylinder, first motor and the second motor are automatically controlled by controller, are risen simultaneously
Sending down abnormally ascending cylinder rise decline distance, the revolving speed of first motor and the second motor set all in accordance with actual production.
By above mode, anti-clogging mud valve provided by the present invention is located at by the flowing lumen in valve body and is adjusted
Chamber lower sidewalls open up cleaning eye, and taper is arranged in cleaning eye and clears up head, drive cleaning head rotation pair using first motor
Mud is crushed, and the raising and lowering of taper cleaning head is realized using lifting cylinder；Gear is realized using rack gear and the second motor
Plate moves in shifting chute, convenient for blocking to cleaning eye, reaches convenient and is crushed to the mud being hardened, avoids valve body stifled
It fills in, ensure that the free air space of flowing lumen and guarantee the purpose of the normal use of mud valve.
Above-described is only the preferred embodiment of anti-clogging mud valve disclosed in this invention, it is noted that for
For those skilled in the art, without departing from the concept of the premise of the invention, can also make it is several deformation and
It improves, these are all within the scope of protection of the present invention.
Claims (5)
1. a kind of anti-clogging mud valve includes the valve body of Cheng Shang type, adjusting cavity is formed inside the vertical portion of the valve body, it is described
The inside of the horizontal part of valve body forms the flowing lumen being connected to adjusting cavity, and the interior of the horizontal part is hollow, the valve body
Vertical portion at the top of be equipped with valve deck, the valve rod through valve deck is equipped with inside the vertical portion of the valve body, the valve rod is located at vertical
One end inside portion is equipped with adjusting block, which is characterized in that the flowing lumen is located at the inner wall below the vertical portion and is equipped with clearly
Hole is managed, the taper for being crushed mud is equipped in the cleaning eye and clears up head, the taper cleaning head can be along the cleaning eye
Move up and down, taper cleaning head carries out driving rotation by first motor, the bottom of the first motor have lifting cylinder into
The interior of row driving, the flowing lumen is equipped with shifting chute, and one end of the shifting chute is connected to the cleaning eye, and described
Shifting chute is used cooperatively with the cleaning eye, rack gear is equipped in the shifting chute, one end of the rack gear is connected with for blocking
The sawtooth of the baffle of cleaning eye, the rack gear is arranged downward, and the sawtooth and the driving gear of the second motor driving shaft end are nibbled
It closes, the rack gear is close to the inner wall of the shifting chute under the action of driving gear.
2. anti-clogging mud valve according to claim 1, which is characterized in that the horizontal part bottom of the valve body is equipped with installation
Frame, the mounting rack include bottom plate, and the bottom plate is fixedly connected on the bottom of the valve body, the lifting air by support frame
Cylinder is arranged on the bottom plate, on the support frame that second motor is layer adjacent to by fixed link.
3. anti-clogging mud valve according to claim 1, which is characterized in that the top of the horizontal part of the valve body, which is equipped with, inclines
The gas hole being tiltedly arranged, the airflow direction of the gas hole and the mud direction of valve body are consistent, and are passed through in the gas hole
Tracheae is connected with air pump, and the side wall that the valve body is located at gas hole is equipped with the fixed frame for fixing the tracheae of air pump, described
The tail end bottom of horizontal part is equipped with discharge port, and the discharge port is threaded with sealing plug.
4. anti-clogging mud valve according to claim 1, which is characterized in that the taper cleaning head includes oblate cylindricality
Fixed station and the cleaning head ontology that is arranged on fixed station, the end of the drive shaft of the fixed station and first motor is fixed to be connected
It connects, the fixed station and the cleaning eye cooperate, and the side of fixed station is coated with rubber pad, the outside of the taper cleaning head
The protrusion of several cones is distributed with, the protrusion, cleaning head ontology and fixed station are produced using integral process injection molding.
5. anti-clogging mud valve according to claim 1, which is characterized in that the lower section of the shifting chute is equipped with for sliding tooth
The rectangular channel of rotation is taken turns, the driving gear is in rectangular groove and engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810744162.4A CN108825808B (en) | 2018-07-09 | 2018-07-09 | Anti-clogging mud valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810744162.4A CN108825808B (en) | 2018-07-09 | 2018-07-09 | Anti-clogging mud valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108825808A CN108825808A (en) | 2018-11-16 |
| CN108825808B true CN108825808B (en) | 2019-12-03 |
Family
ID=64135686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810744162.4A Active CN108825808B (en) | 2018-07-09 | 2018-07-09 | Anti-clogging mud valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108825808B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112588708B (en) * | 2020-11-26 | 2021-08-27 | 安徽铜都流体科技股份有限公司 | Anti-blocking mud valve for shield machine |
| CN113357392A (en) * | 2021-06-21 | 2021-09-07 | 江苏瑞亿石油机械有限公司 | Anti-blocking slurry valve |
| CN114183548B (en) * | 2021-06-29 | 2023-02-28 | 金湖恒力机械有限公司 | Mud valve with from dredging and prevent blockking up function |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2646504Y (en) * | 2003-09-29 | 2004-10-06 | 陈公政 | Foreign matter block preventing by-pass valve |
| US9708872B2 (en) * | 2013-06-19 | 2017-07-18 | Wwt North America Holdings, Inc | Clean out sub |
| US10336236B2 (en) * | 2014-02-12 | 2019-07-02 | Eaton Intelligent Power Limited | Bottom loading valves, tank management systems incorporating the same, and methods for managing tanks |
| CN207230014U (en) * | 2017-07-28 | 2018-04-13 | 江苏恒鑫石化机械有限公司 | A kind of anticlogging mud valve |
| CN107701801A (en) * | 2017-10-19 | 2018-02-16 | 约翰斯顿流体科技（无锡）有限公司 | A kind of regulating valve for being convenient to clean tamper |
-
2018
- 2018-07-09 CN CN201810744162.4A patent/CN108825808B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108825808A (en) | 2018-11-16 |
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Denomination of invention: Anti clogging mud valve Effective date of registration: 20231107 Granted publication date: 20191203 Pledgee: Jianhu County Sub branch of Postal Savings Bank of China Co.,Ltd. Pledgor: YANCHENG RUIDE PETROCHEMICAL MACHINERY Co.,Ltd. Registration number: Y2023980064361 |