CN115318741A - Cleaning equipment for control valve of petroleum transportation discharge pipeline - Google Patents
Cleaning equipment for control valve of petroleum transportation discharge pipeline Download PDFInfo
- Publication number
- CN115318741A CN115318741A CN202111527340.6A CN202111527340A CN115318741A CN 115318741 A CN115318741 A CN 115318741A CN 202111527340 A CN202111527340 A CN 202111527340A CN 115318741 A CN115318741 A CN 115318741A
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- China
- Prior art keywords
- control valve
- fixedly connected
- box
- pipe
- under casing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 41
- 239000003208 petroleum Substances 0.000 title abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 60
- 238000005406 washing Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 9
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000004506 ultrasonic cleaning Methods 0.000 abstract description 10
- 230000002000 scavenging effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 20
- 239000007788 liquid Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000010865 sewage Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 239000010779 crude oil Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
Landscapes
- Cleaning By Liquid Or Steam (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a cleaning device for a control valve of a petroleum transportation discharge pipeline, which comprises a box body, wherein the bottom of the box body is fixedly connected with a bottom box, four cleaning cavities are formed in the box body, a control valve is arranged in each cleaning cavity, and an ultrasonic generator is fixedly connected to the bottom of one side of the inner wall of each cleaning cavity. This oil transportation discharge pipe says control valve cleaning equipment, bottom fixedly connected with bottom box through the box, utilize the setting of ultrasonic cleaning cooperation siphon, can be after ultrasonic cleaning accomplishes, can once only discharge fast the inside dirt of control valve, the cleaning performance is better, the dirt on surface also is easily got rid of through ultrasonic cleaning simultaneously, the first stay cord of one side fixedly connected with through the push pedal, can wash four control valves simultaneously, save holistic scavenging period, and can carry out centralized processing through the push pedal to wasing exhaust dirt.
Description
Technical Field
The invention relates to the technical field of petroleum transportation, in particular to a cleaning device for a control valve of a petroleum transportation discharge pipeline.
Background
One of the components of petroleum transportation and fossil energy transportation comprises two parts, namely crude oil transportation and finished oil transportation, wherein if the crude oil is imported, the crude oil is transported from an export country to an import country wharf by a large oil tanker and then is transported to an oil refinery by an oil pipeline; if the oil is produced in the country, the oil is delivered to each oil refinery through an oil delivery pipe, and the finished oil is delivered to each oil depot through the oil refinery firstly and is mainly transported by pipelines, or transported by railways or inland rivers and automobiles; and then distributed to users by each oil depot, at the moment, mainly depending on the oil transportation car to transport, and the control valve is composed of two main assemblies: valve body assemblies and actuator assemblies (or actuator systems) fall into four major families: the variety of the four types of valves can result in a large number of different applicable structures, each structure having its specific applications, characteristics, advantages and disadvantages, and although some control valves have wider application conditions than others, the control valves are not applicable to all conditions to jointly construct an optimal solution for enhancing performance and reducing cost.
The control valve that oil transportation used need wash, washes surface and inside greasy dirt and dirt, the better use in later stage that just can be convenient for, and current belt cleaning device is when wasing, and the cleaning performance is not good, still can have more greasy dirt to adsorb on the surface, and artificial cleaning's efficiency is comparatively low moreover, and is consuming time longer.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a cleaning device for a control valve of an oil transportation discharge pipeline, which solves the problems of poor cleaning effect, more oil stains adsorbed on the surface, low efficiency of manual cleaning and long time consumption.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides an oil transportation discharge line control valve cleaning equipment, the power distribution box comprises a box body, the bottom fixedly connected with under casing of box to four washing chambeies have been seted up to the inside of box, the inside in washing chamber is provided with the control valve, the bottom fixedly connected with supersonic generator of washing intracavity wall one side, the equal fixedly connected with diaphragm in both sides of washing intracavity wall to fixedly connected with annular plate between the relative one side of two diaphragms, the bottom of control valve contacts with the top of annular plate, the top and the bottom of control valve all are provided with row's material pipe, and the intercommunication has the siphon between the top of under casing and the bottom of box, the top of siphon runs through row's material pipe and extends to the inside of arranging the material pipe, the top of box is provided with sealed lid to the inside fixedly connected with standpipe of sealed lid, be provided with the annular pipe between box and the washing chamber to the fixed surface of annular pipe is connected with the shower nozzle, one side of shower nozzle runs through the washing chamber and extends to its inside.
Preferably, the front side and the rear side of the annular plate are both fixedly connected with baffle plates, and the top of the transverse plate is fixedly connected with a supporting plate.
Preferably, the top end of the siphon pipe is provided with a sealing ring, and the top of the sealing ring penetrates through the discharge pipe and extends to the inside.
Preferably, the inside sliding connection of under casing has the push pedal to top and the equal fixedly connected with slider in bottom around the push pedal, all set up the spout with slider looks adaptation around the under casing inner wall.
Preferably, one side of the push plate is fixedly connected with a first pull rope, the other side of the push plate is fixedly connected with a second pull rope, one ends of the first pull rope and the second pull rope penetrate through the bottom box and extend to the outside of the bottom box, and the bottom of one side of the bottom box is communicated with a sewage discharge pipe.
Preferably, the back fixedly connected with water tank of under casing to the bottom fixedly connected with water pump of water tank inner wall, the delivery port intercommunication of water pump has the outlet pipe, the one end of outlet pipe runs through the water tank and extends to the top of water tank.
Preferably, the one end intercommunication that the outlet pipe extends to the water tank top has violently the pipe, the top intercommunication on violently managing the surface has the hose, the one end of hose runs through the box and extends to the inside of box, the one end that the hose extended to the box inside is linked together with the surface of annular tube to the water inlet intercommunication of water pump has the inlet tube, the top intercommunication of water tank has the water injection pipe.
Advantageous effects
The invention provides a cleaning device for a control valve of a petroleum transportation discharge pipeline. Compared with the prior art, the method has the following beneficial effects:
(1) This oil transportation discharge pipe way control valve cleaning equipment, bottom fixedly connected with under casing through the box, and four washing chambeies have been seted up to the inside of box, the inside in washing chamber is provided with the control valve, wash the bottom fixedly connected with supersonic generator of intracavity wall one side, wash the equal fixedly connected with diaphragm in both sides of intracavity wall, and fixedly connected with annular plate between the relative one side of two diaphragms, the bottom of control valve contacts with the top of annular plate, the top and the bottom of control valve all are provided with row material pipe, and the intercommunication has the siphon between the top of under casing and the bottom of box, the top of siphon runs through row material pipe and extends to row material inside of pipe, the top of box is provided with sealed lid, and the inside fixedly connected with standpipe of sealed lid, be provided with the annular pipe between box and the washing chamber, and the fixed surface of annular pipe is connected with the shower nozzle, one side of shower nozzle runs through the washing chamber and extends to inside, utilize the setting of ultrasonic cleaning cooperation siphon, can be after ultrasonic cleaning accomplishes, can be after ultrasonic cleaning, can be once only discharge the inside dirt of control valve fast, the cleaning effect is better, simultaneously the dirt on surface also gets rid of getting rid of light through ultrasonic cleaning.
(2) This oil transportation discharge pipe way control valve cleaning equipment, the first stay cord of one side fixedly connected with through the push pedal, and the opposite side fixedly connected with second stay cord of push pedal, the one end of first stay cord and second stay cord all runs through the under casing and extends to the outside of under casing, the bottom intercommunication of under casing one side has the blow off pipe, the back fixedly connected with water tank of under casing, and the bottom fixedly connected with water pump of inner wall of the water tank, the delivery port intercommunication of water pump has the outlet pipe, the one end of outlet pipe runs through the water tank and extends to the top of water tank, be provided with four washing chambeies, can wash four control valves simultaneously, save holistic scavenging time, and can carry out centralized processing through the push pedal to washing exhaust dirt.
Drawings
FIG. 1 is a perspective view of the structure of the present invention;
FIG. 2 is a cross-sectional view of the structure of the present invention;
FIG. 3 is a perspective view of the annular plate structure of the present invention;
FIG. 4 is a perspective view of the push plate structure of the present invention;
FIG. 5 is a top view of the wash chamber configuration of the present invention;
FIG. 6 is a partial schematic view of the siphon tube of the present invention;
fig. 7 is a cross-sectional view of the water tank structure of the present invention.
In the figure: 1-box body, 2-bottom box, 3-cleaning cavity, 4-control valve, 5-ultrasonic generator, 6-transverse plate, 7-annular plate, 8-discharging pipe, 9-siphon pipe, 10-sealing cover, 11-vertical pipe, 12-annular pipe, 13-spray head, 14-baffle, 15-supporting plate, 16-sealing ring, 17-push plate, 18-slide block, 19-chute, 20-first pull rope, 21-second pull rope, 22-blow-off pipe, 23-water tank, 24-water pump, 25-water outlet pipe, 26-horizontal pipe, 27-hose, 28-water inlet pipe and 29-water injection pipe.
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.
Referring to fig. 1-7, the present invention provides a technical solution: the utility model provides an oil transportation discharge pipe way control valve cleaning equipment, the power distribution box comprises a box body 1, the bottom fixedly connected with under casing 2 of box 1, and four washing chamber 3 have been seted up to the inside of box 1, the inside of washing chamber 3 is provided with control valve 4, wash the bottom fixedly connected with supersonic generator 5 of chamber 3 inner wall one side, utilize the setting of ultrasonic cleaning cooperation siphon 9, can be after ultrasonic cleaning accomplishes, can discharge the inside dirt of control valve 4 once only fast, the cleaning performance is better, simultaneously the dirt of surface is also easily got rid of through ultrasonic cleaning, wash the equal fixedly connected with diaphragm 6 in both sides of chamber 3 inner wall, and fixedly connected with annular plate 7 between the relative one side of two diaphragm 6, the bottom of control valve 4 contacts with the top of annular plate 7, the top and the bottom of control valve 4 all are provided with row material pipe 8, and there is siphon 9 between the bottom of under casing 2's top and the bottom, the top of siphon 9 runs through row material pipe 8 and extends to the inside of arranging material pipe 8, the top of box 1 is provided with 10 sealed lid, and the inside fixedly connected with standpipe 11, be provided with between box 1 and wash chamber 3 and wash the shower nozzle 13 of the fixed surface of 12 of the pipe 13, and the shower nozzle 13 that its inside of annular plate extends to annular plate 3, and the shower nozzle 13.
In the invention, the front side and the rear side of the annular plate 7 are both fixedly connected with baffle plates 14, and the top of the transverse plate 6 is fixedly connected with a supporting plate 15.
In the present invention, the top end of the siphon tube 9 is provided with a seal ring 16, and the top of the seal ring 16 penetrates through the discharge pipe 8 and extends to the inside.
In the invention, the inside of the bottom box 2 is slidably connected with a push plate 17, the four cleaning cavities 3 are arranged, the four control valves 4 can be cleaned at the same time, the overall cleaning time is saved, the dirt discharged by cleaning can be intensively treated through the push plate 17, the front top and the back bottom of the push plate 17 are fixedly connected with sliding blocks 18, and the front and the back of the inner wall of the bottom box 2 are respectively provided with sliding grooves 19 matched with the sliding blocks 18.
In the invention, one side of the push plate 17 is fixedly connected with a first pull rope 20, the other side of the push plate 17 is fixedly connected with a second pull rope 21, one ends of the first pull rope 20 and the second pull rope 21 penetrate through the bottom box 2 and extend to the outside of the bottom box 2, and the bottom of one side of the bottom box 2 is communicated with a sewage discharge pipe 22.
In the invention, the back of the bottom box 2 is fixedly connected with a water tank 23, the bottom of the inner wall of the water tank 23 is fixedly connected with a water pump 24, the water outlet of the water pump 24 is communicated with a water outlet pipe 25, and one end of the water outlet pipe 25 penetrates through the water tank 23 and extends to the top of the water tank 23.
In the invention, one end of the water outlet pipe 25 extending to the top of the water tank 23 is communicated with a transverse pipe 26, the top of the surface of the transverse pipe 26 is communicated with a hose 27, one end of the hose 27 penetrates through the tank body 1 and extends to the inside of the tank body 1, one end of the hose 27 extending to the inside of the tank body 1 is communicated with the surface of the annular pipe 12, a water inlet of the water pump 24 is communicated with a water inlet pipe 28, and the top of the water tank 23 is communicated with a water injection pipe 29.
And those not described in detail in this specification are well within the skill of those in the art.
When in use, the control valve 4 is placed in the cleaning cavity 3, the bottom of the control valve 4 is positioned at the top of the annular plate 7, the siphon pipe 9 is inserted into the discharging pipe 8 on the control valve 4, the sealing ring 16 plays a role of sealing, the baffle plate 14 on the annular plate 7 limits the control valve 4, the support plate 15 supports the control valve 4, then the sealing cover 10 is covered, cleaning liquid is injected into the control valve 4 through the vertical pipe 11 without overflowing water, the water pump 24 is started through an external switch, the water pump 24 pumps the cleaning liquid in the water tank 23 through the water inlet pipe 28, then the cleaning liquid is discharged through the water outlet pipe 25, the cleaning liquid enters the annular pipe 12 through the hose 27, the cleaning liquid is injected into the cleaning cavity 3 through the spray head 13, then the ultrasonic generator 5 is started through an external switch, high-frequency oscillation signal that supersonic generator 5 sent, there is little bubble in the liquid will produce the vibration, make the greasy dirt on the control valve 4 disperse in the washing liquid, wash a period of back, open the intraduct valve of intercommunication, the sewage that will wash in the chamber 3 is arranged into under casing 2, then pour into the high pressure water into in the standpipe 11, the row's of control valve 4 material pipe 8 is aimed at to the bottom of standpipe 11, can strike the inside of arranging material pipe 8, make inside sewage arrange into under casing 2 through siphon 9, the upper water in under casing 2 passes through blow off pipe 22 and discharges, the sediment of bottom is just through pulling second stay cord 21, pass through the spacing of slider 18 with push pedal 17 and stimulate toward one side, just can push toward one side the sediment of under casing 2 bottom, just can clear up the sediment from one side of under casing 2.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an oil transportation discharge line control valve cleaning equipment, includes box (1), its characterized in that: the utility model discloses a cleaning device, including box (1), bottom fixedly connected with under casing (2) of box (1) to four washing chamber (3) have been seted up to the inside of box (1), the inside of washing chamber (3) is provided with control valve (4), the bottom fixedly connected with supersonic generator (5) of washing chamber (3) inner wall one side, the equal fixedly connected with diaphragm (6) in both sides of washing chamber (3) inner wall, and fixedly connected with annular plate (7) between two relative one sides of diaphragm (6), the bottom of control valve (4) contacts with the top of annular plate (7), the top and the bottom of control valve (4) all are provided with row material pipe (8), and the intercommunication has siphon (9) between the top of under casing (2) and the bottom of box (1), the top of siphon (9) is run through row material pipe (8) and is extended to the inside of annular plate (8), the top of box (1) is provided with sealed lid (10) to the inside fixedly connected with standpipe (11) of sealed lid (10), be provided with between box (1) and wash chamber (3) and wash annular plate (12) to the surface of shower nozzle (13) extend to one side of shower nozzle (13) is connected with the washing.
2. The oil transportation discharge pipeline control valve cleaning apparatus as set forth in claim 1, wherein: the front side and the rear side of the annular plate (7) are fixedly connected with baffle plates (14), and the top of the transverse plate (6) is fixedly connected with a support plate (15).
3. The oil transportation discharge pipeline control valve cleaning apparatus as set forth in claim 1, wherein: the top end of the siphon (9) is provided with a sealing ring (16), and the top of the sealing ring (16) penetrates through the discharging pipe (8) and extends to the inside.
4. The oil transportation discharge pipeline control valve cleaning apparatus as set forth in claim 1, wherein: the inside sliding connection of under casing (2) has push pedal (17) to top and the equal fixedly connected with slider (18) in bottom around push pedal (17), spout (19) with slider (18) looks adaptation are all seted up around under casing (2) inner wall.
5. The oil transportation discharge pipeline control valve cleaning apparatus according to claim 4, wherein: the utility model discloses a solar energy water heater, including push pedal (17), the opposite side fixedly connected with second stay cord (21) of push pedal (17), the outside of under casing (2) is all run through and extend to under casing (2) in the one end of first stay cord (20) and second stay cord (21), the bottom intercommunication of under casing (2) one side has blow off pipe (22).
6. The oil transportation exhaust pipeline control valve cleaning apparatus according to claim 1, wherein: the back fixedly connected with water tank (23) of under casing (2) to the bottom fixedly connected with water pump (24) of water tank (23) inner wall, the delivery port intercommunication of water pump (24) has outlet pipe (25), the one end of outlet pipe (25) runs through water tank (23) and extends to the top of water tank (23).
7. The oil transportation discharge pipeline control valve cleaning apparatus according to claim 6, wherein: the water pipe (25) extends to the one end intercommunication at water tank (23) top has violently pipe (26), the top intercommunication on violently pipe (26) surface has hose (27), the inside of box (1) and extension to box (1) is run through to the one end of hose (27), hose (27) extend to the inside one end of box (1) and the surface of toroidal tube (12) are linked together to the water inlet intercommunication of water pump (24) has inlet tube (28), the top intercommunication of water tank (23) has water injection pipe (29).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111527340.6A CN115318741B (en) | 2021-12-14 | 2021-12-14 | Petroleum transportation discharge pipeline control valve cleaning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111527340.6A CN115318741B (en) | 2021-12-14 | 2021-12-14 | Petroleum transportation discharge pipeline control valve cleaning equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115318741A true CN115318741A (en) | 2022-11-11 |
| CN115318741B CN115318741B (en) | 2023-12-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111527340.6A Active CN115318741B (en) | 2021-12-14 | 2021-12-14 | Petroleum transportation discharge pipeline control valve cleaning equipment |
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| Country | Link |
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| CN (1) | CN115318741B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101034572B1 (en) * | 2010-10-19 | 2011-05-12 | 고동원 | Solenoid valve testing/washing device and method |
| CN204201111U (en) * | 2014-09-22 | 2015-03-11 | 浙江良一阀门制造有限公司 | Slag-off valve |
| CN109329987A (en) * | 2018-12-17 | 2019-02-15 | 蓝永连 | A kind of fruits and vegetables cleaning device that cleaning effect is good |
| CN208743144U (en) * | 2018-04-28 | 2019-04-16 | 杭州萧冠机械有限公司 | Valve cleaning device |
| CN212733288U (en) * | 2020-08-05 | 2021-03-19 | 湖南大华机械有限公司 | Surface oil stain cleaning device for piston rod |
| CN213033151U (en) * | 2020-06-16 | 2021-04-23 | 滁州市凯林机电设备有限公司 | Dirt belt cleaning device for valve |
| CN213378106U (en) * | 2020-08-17 | 2021-06-08 | 刘晓峰 | A belt cleaning device for automobile parts |
| CN214719053U (en) * | 2020-12-31 | 2021-11-16 | 黑龙江飞鹤乳业有限公司 | Valve cavity cleaning splash-proof device |
-
2021
- 2021-12-14 CN CN202111527340.6A patent/CN115318741B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101034572B1 (en) * | 2010-10-19 | 2011-05-12 | 고동원 | Solenoid valve testing/washing device and method |
| CN204201111U (en) * | 2014-09-22 | 2015-03-11 | 浙江良一阀门制造有限公司 | Slag-off valve |
| CN208743144U (en) * | 2018-04-28 | 2019-04-16 | 杭州萧冠机械有限公司 | Valve cleaning device |
| CN109329987A (en) * | 2018-12-17 | 2019-02-15 | 蓝永连 | A kind of fruits and vegetables cleaning device that cleaning effect is good |
| CN213033151U (en) * | 2020-06-16 | 2021-04-23 | 滁州市凯林机电设备有限公司 | Dirt belt cleaning device for valve |
| CN212733288U (en) * | 2020-08-05 | 2021-03-19 | 湖南大华机械有限公司 | Surface oil stain cleaning device for piston rod |
| CN213378106U (en) * | 2020-08-17 | 2021-06-08 | 刘晓峰 | A belt cleaning device for automobile parts |
| CN214719053U (en) * | 2020-12-31 | 2021-11-16 | 黑龙江飞鹤乳业有限公司 | Valve cavity cleaning splash-proof device |
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| CN115318741B (en) | 2023-12-15 |
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