CN211168224U - Fly ash storage tank with cleaning device - Google Patents
Fly ash storage tank with cleaning device Download PDFInfo
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- CN211168224U CN211168224U CN201921932456.6U CN201921932456U CN211168224U CN 211168224 U CN211168224 U CN 211168224U CN 201921932456 U CN201921932456 U CN 201921932456U CN 211168224 U CN211168224 U CN 211168224U
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Abstract
The utility model discloses a fly ash storage tank with cleaning device belongs to the technical field of fly ash storage tank, and its technical scheme includes that many set up in the inlet pipe of storage tank lower extreme, and is a plurality of the one end that the inlet pipe is close to the storage tank all is connected with first valve, and is a plurality of all the detachable connection of inlet pipe air inlet has the lid that can seal the air inlet, and is a plurality of still all be connected with between inlet pipe correspondence first valve and the lid and only allow the outside air to enter into the check valve subassembly in the inlet pipe, and is a plurality of all be connected with the collecting pipe between inlet pipe correspondence check valve subassembly and the lid, inlet pipe one side still is provided with the case that gathers materials, and is a plurality of the collecting pipe all is connected in the case that gathers materials, the case that gathers materials keeps away from one side of. The utility model discloses a be convenient for carry out clear effect to the inlet pipe of fly ash storage tank.
Description
Technical Field
The utility model belongs to the technical field of the technique of fly ash storage tank and specifically relates to a fly ash storage tank with cleaning device is related to.
Background
After the dry powder mortar is transported to a construction site by a mortar bulk transport vehicle, the mortar is transported into a tank body of a dry powder mortar mixing station by a pneumatic transport system of the vehicle, and then dust is collected at an exhaust port of the tank body by using dust collection equipment. The dry powder mortar in the tank body is uniformly dropped by means of the self gravity and the vibration of the vibration power of the tank body, the flow control is carried out through a butterfly valve connected with the lower end of the tank body, and the dry powder mortar is opened at the maximum position during normal use.
The present patent of the present patent application CN201621245696.5 for reference discloses a vacuum powder feeding device, which comprises an upper cover, a filtering chamber and a storage tank, wherein the filtering chamber is disposed between the upper cover and the storage tank, the upper cover, the filtering chamber and the storage tank are communicated with each other, the upper cover is provided with a vacuum baffle valve, a filtering device is disposed in the filtering chamber, a feeding pipe is disposed on the sidewall of the storage tank, the feeding pipe extends from the outside of the storage tank to the inside of the storage tank, the part of the feeding pipe extending out of the storage tank is provided with an air inlet, the part of the feeding pipe located in the storage tank is provided with a first air outlet, the opening direction of the first air outlet is downward, the bottom of the storage tank is provided with a second air outlet, the above mentioned vacuum powder feeding device of the present utility model can prevent the conveyed powder from being sucked into the vacuum source through the filtering device, ensure the normal use of the vacuum source, and the feeding, the abrasion of the powder to the inner wall of the storage tank can be effectively reduced, and the service life of the storage tank is prolonged.
However, the above prior art solutions have the following drawbacks: when the feeding pipe of the storage tank is used for a long time, a large amount of fly ash and various impurities are easily adhered to the inner side wall of the feeding pipe, but the feeding pipe is difficult to effectively clean the inside of the feeding pipe due to the long length of the feeding pipe.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fly ash storage tank with cleaning device reaches and is convenient for carry out clear beneficial effect to the inlet pipe of fly ash storage tank.
The above object of the present invention is achieved by the following technical solutions:
the utility model provides an inlet pipe convenient to clear fly ash storage tank, includes that many set up in the inlet pipe of storage tank lower extreme, and is a plurality of the one end that the inlet pipe is close to the storage tank all is connected with first valve, and is a plurality of all the detachable of inlet pipe air inlet is connected with the lid that can seal the air inlet, and is a plurality of still all be connected with between the inlet pipe corresponds first valve and the lid and only allow the outside air to enter into the check valve subassembly in the inlet pipe, and is a plurality of all be connected with the collecting pipe between the inlet pipe corresponds check valve subassembly and the lid, inlet pipe one side still is provided with the case that gathers materials, and is a plurality of the collecting pipe is all connected in the case that gathers materials, the case that gathers materials.
Through adopting above-mentioned technical scheme, when cleaning the inlet pipe, will close first valve earlier, then be connected to the intake pipe with the lid, thereby seal the inlet pipe, make the interior confined environment that forms of inlet pipe, but owing to be provided with check valve subassembly, when opening the dust extractor, under the suction effect of dust extractor, the outside air passes through check valve subassembly and enters into in the inlet pipe, thereby can suck the suction to the fly ash that adheres to the inlet pipe inner wall through the air exhauster, later fly ash is collected the collection box through the collecting pipe in, and then the completion is cleaned the inlet pipe.
The utility model discloses further set up to: and one end of the collecting pipe close to the feeding pipe is communicated with a second valve.
Through adopting above-mentioned technical scheme, can collect when opening and close the fly ash in the inlet pipe of difference through the second valve.
The utility model discloses further set up to: the filter screen that can filter fly ash is provided with vertically in the position that collection workbin and the dust extractor take out the dirt pipe intercommunication.
Through adopting above-mentioned technical scheme, when the case that gathers materials suction fly ash, the filter screen can prevent that fly ash from being sucked to the dust extraction incasement and influencing the dust extraction case and normally work.
The utility model discloses further set up to: the upper surface of the material collecting box is fixedly connected with a water tank, and a water outlet pipe of the water tank extends downwards into the water tank and is communicated with a spray head.
Through adopting above-mentioned technical scheme, the water in the water tank sprays the fly ash that assembles in the case that gathers materials through the shower nozzle, and the fly ash that adsorbs the sail can subside the lower extreme that gathers materials the case fast to the settlement efficiency of fly ash has been improved.
The utility model discloses further set up to: the opening has been seted up to case one side of gathering materials, it is connected with one and can tend to the outside bearing fill that slides of case that gathers materials to gather materials the horizontal slip in the case that corresponds the open-ended position.
Through adopting above-mentioned technical scheme, after the fly ash is sucked in the aggregate box, fall to the bearing fill, after the fly ash in the bearing fill is full of, tend to the workbin outside pull bearing fill to the bearing fill is taken out from the aggregate box, and then is unified the processing to the fly ash in the bearing fill.
The utility model discloses further set up to: the check valve component comprises a support column fixedly connected to the peripheral surface of the feeding pipe, the support column is provided with a first channel communicated with the feeding pipe along the axis direction, one end of the first channel, far away from the feeding pipe, is also provided with a third channel coaxially arranged with the first channel, the radius of the third channel is smaller than that of the first channel, a steel ball is arranged at the communication position of the third channel and the first channel, the radius of the steel ball is larger than that of the third channel, the radius of the steel ball is smaller than that of the first channel, a spring capable of pulling the steel ball to seal the third channel under a normal state is fixedly connected between the third channel and the steel ball, and a fourth channel capable of communicating the.
By adopting the technical scheme, when the dust extractor is started, as the feeding pipe is a closed pipeline, under the suction action of the dust extractor, outside air can enter through the fourth channel, so that the steel ball is pushed to move towards the direction close to the feeding pipe, at the moment, the first channel is communicated with the third channel, the air can enter the first channel from the third channel and then enter the feeding pipe through the first channel, and meanwhile, the spring tends to be stretched towards the direction close to the feeding pipe; when the dust extractor is closed, the spring returns to the normal state, the steel ball can be pulled to move in the direction away from the feeding pipe, and the second channel and the third channel are closed at the moment, so that air is prevented from entering the feeding pipe.
The utility model discloses further set up to: a second channel which is coaxial with the first channel is arranged between the first channel and the second channel, the second channel is conical and can communicate the first channel with the third channel, and the radius of one end, close to the feeding pipe, of the second channel is larger than that of one end, far away from the feeding pipe, of the second channel.
Through adopting above-mentioned technical scheme, conical second passageway can increase the area of contact of steel ball and second passageway inside wall to leakproofness when can improving the steel ball and seal the second passageway.
The utility model discloses further set up to: the two ends of the receiving hopper are fixedly connected with hasps, and the positions of the two sides of the material collecting box, which are far away from each other, corresponding to the two hasps are fixedly connected with retaining rings matched with the hasps.
Through adopting above-mentioned technical scheme, earlier with hold the hopper push into the case that gathers materials in the back, then with the buckle lock to the hasp on, and then can improve the fastening nature of holding the hopper in the case that gathers materials.
The utility model discloses further set up to: the receiving hopper is made of transparent materials.
Through adopting above-mentioned technical scheme, transparent material accepts the fill and is convenient for observe the collection condition of accepting interior fly ash of fill to in time change and maintain and accept the fill.
The utility model discloses further set up to: the collecting pipe is provided with the direction cambered surface with the inlet pipe junction.
Through adopting above-mentioned technical scheme, the direction cambered surface can be to the fly ash from the in-process that the inlet pipe landing received the pipe and carry out the guide.
To sum up, the utility model discloses a beneficial technological effect does:
1. by adopting the technical scheme, when the feeding pipe is cleaned, the first valve is closed, and then the cover body is connected to the air inlet pipe, so that the air inlet pipe is closed, and a closed environment is formed in the feeding pipe;
2. by arranging the one-way valve assembly, when the dust extractor is started, as the feeding pipe is a closed pipeline, under the suction action of the dust extractor, outside air can enter through the fourth channel, so that the steel ball is pushed to move towards the direction close to the feeding pipe, at the moment, the first channel is communicated with the third channel, the air can enter the first channel from the third channel and further enter the feeding pipe through the first channel, and meanwhile, the spring tends to be stretched towards the direction close to the feeding pipe; when the dust extractor is closed, the spring returns to the normal state, the spring can pull the steel ball to move in the direction away from the feeding pipe, and at the moment, the second channel and the third channel are closed, so that air is prevented from entering the feeding pipe;
3. through being provided with water tank and shower nozzle, the water in the water tank sprays the fly ash that assembles in the case that gathers materials through the shower nozzle, and the fly ash that adsorbs the water can subside the lower extreme that gathers materials the case fast to the settlement efficiency of fly ash has been improved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present embodiment;
FIG. 2 is a schematic view showing a sectional structure of a material collecting box in the present embodiment;
fig. 3 is a schematic view of the structure of the one-way valve assembly of the present embodiment.
In the figure, 1, a material storage tank; 2. a feed pipe; 21. a first valve; 22. a cover body; 23. a second valve; 24. a collection pipe; 25. a guiding cambered surface; 3. a support pillar; 31. a first channel; 32. a second channel; 33. a third channel; 34. a fourth channel; 35. a steel ball; 36. a spring; 4. a material collecting box; 41. an air inlet; 42. an air outlet; 43. a main pipe; 431. a main valve; 44. a dust extractor; 45. filtering with a screen; 46. an opening; 47. a retaining ring; 5. a water tank; 51. a water spray pipe; 52. a spray head; 6. a receiving hopper; 61. a hasp is provided.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, a fly ash storage tank with a cleaning device comprises a plurality of feed pipes 2 fixedly connected to the lower end of a storage tank 1, one ends of the feed pipes 2 close to the storage tank 1 are all connected with a first valve 21, one ends of the feed pipes 2 far away from the storage tank 1 are all in threaded connection with a cover 22 capable of sealing the feed pipes 2, a check valve assembly allowing only outside air to enter the feed pipes 2 is further connected between the feed pipes 2 corresponding to the first valve 21 and the cover 22, a second valve 23 is connected between the feed pipes 2 corresponding to the check valve assembly and the cover 22, vertically arranged collection pipes 24 are connected between the feed pipes 2 corresponding to the second valve 23 and the check valve assembly, each collection pipe 24 is located at the lower side of each corresponding feed pipe 2, and a guide arc surface 25 is further arranged at the connection part of each collection pipe 24 and, so that the fly ash can be guided during the process of sliding from the feeding pipe 2 to the collecting pipe 24. The feed pipe 2 one side still vertically is provided with a case 4 that gathers materials, gather materials case 4 and have seted up an air inlet 41 near one side of collecting pipe 24, the air inlet 41 rigid coupling has the person in charge 43 that a level set up, be responsible for 43 and air inlet 41 intercommunication, the person in charge 43 is close to the one end of gathering materials case 4 and is connected with the main valve 431 that can control and be responsible for 43 intercommunication, thereby can prevent that fly ash from letting in the in-process of feed pipe 2 and entering into the case 4 that gathers materials through being responsible for 43, each collecting pipe 24 lower extreme homoenergetic downwardly extending just communicates with being responsible.
Referring to fig. 2, a dust extractor 44 for extracting the fly ash in the feeding pipe 2 into the material collection box 4 is arranged on one side of the material collection box 4 away from the collecting pipe 24, an air outlet 42 is arranged at the lower end of one side of the material collection box 4 away from the collecting pipe 24, and a dust extraction pipe of the dust extractor 44 can be communicated with the material collection box 4 through the air outlet 42. The position of the material collecting box 4 corresponding to the air outlet 42 is connected with a vertically arranged filter screen 45 through a bolt, and the filter screen 45 can cover the air outlet 42 so as to prevent the pulverized coal ash from being sucked into the dust extraction box and influencing the normal work of the dust extraction box. 4 upside rigid couplings of case that gathers materials have water tank 5, the outlet pipe downwardly extending of water tank 5 wears to establish 4 roof of case that gathers materials and the rigid coupling has three spray pipes 51, the equal rigid coupling of each spray pipe 51 downside has a plurality of shower nozzles 52, 5 one end intercommunication of water tank have one can control the rivers entering nozzle 52's in the water tank 5 water valve (not sign in the picture), water in the water tank 5 can spray the fly ash of gathering in the case that gathers materials 4 through shower nozzle 52, the fly ash of adsorbing the water can sink the lower extreme of case that gathers materials 4 fast, thereby the sedimentation efficiency of fly ash has been improved. The lower extreme of the preceding curb plate of collection case 4 has seted up a rectangular opening 46, and the position that corresponds opening 46 in collection case 4 still horizontal sliding connection has a transparent fill 6 of accepting, and the opening 46 of accepting fill 6 is seted up upwards and accepts fill 6 and can tend to collection case 4 outside and slide, and after accepting to fill up in the fill 6 of fly ash, can take out from collection case 4 accepting fill 6, and then handles the inside fly ash of accepting fill 6. The two ends of the receiving hopper 6 are fixedly connected with hasps 61, the positions of the two sides of the collecting box 4, which are far away from each other and correspond to the two hasps 61, are fixedly connected with buckles 47 matched with the hasps 61, and after the receiving hopper 6 is pushed into the collecting box 4, the buckles 47 are buckled on the hasps 61, so that the tightness of the receiving hopper 6 in the collecting box 4 can be improved. When the feeding pipe 2 is cleaned, the first valve 21 is closed, then the cover body 22 is connected to the air inlet 41, so that the air inlet 41 is closed, a closed environment is formed in the feeding pipe 2, then the feeding pipe 2 is cleaned according to needs, and the second valve 23 on the corresponding feeding pipe 2 is opened, because the one-way valve component is arranged, when the dust extractor 44 is opened, only external air is allowed to enter the feeding pipe 2 through the one-way valve component under the suction action of the dust extractor 44, so that the fly ash attached to the inner wall of the feeding pipe 2 can be sucked through the exhaust fan, then the fly ash is sucked into the collecting box 4 through the collecting pipe 24 and the main pipe 43, meanwhile, the spray head 52 sprays the dust collected into the collecting box 4, and the fly ash attached with water can be quickly settled into the receiving hopper 6, so that the cleaning of the feeding pipe 2 is completed; when the transparent receiving hopper 6 is full of the fly ash, the retaining ring 47 is opened from the hasp 61, so that the receiving hopper 6 is pulled out of the collecting box 4, and the fly ash in the collecting box 4 is treated in time.
Referring to fig. 3, the check valve assembly includes a supporting pillar 3 fixed on the outer circumferential surface of the feeding pipe 2, the axial direction of the supporting pillar 3 is perpendicular to the axial direction of the feeding pipe 2, the supporting pillar 3 is provided with a first channel 31 along the axial direction, the first channel 31 and the supporting pillar 3 are arranged coaxially, the first channel 31 can be communicated with the feeding pipe 2, one end of the first channel 31, which is far away from the feeding pipe 2, is provided with a second channel 32, the second channel 32 is conical and is arranged coaxially with the first channel 31, the radius of one end of the second channel 32, which is close to the feeding pipe 2, is equal to the radius of the first channel 31, the radius of one end of the second channel 32, which is far away from the feeding pipe 2, is smaller than the radius of the first channel 31, one end of the second channel 32, which is far away from the feeding pipe 2, is further provided with a third channel 33 arranged coaxially with the second channel, the radius of the steel ball 35 is larger than that of the third channel 33, the radius of the steel ball 35 is smaller than that of the first channel 31, one end, away from the feeding pipe 2, of the third channel 33 is fixedly connected with a spring 36, the other end of the spring 36 is fixedly connected with the steel ball 35, and the spring 36 can pull the steel ball 35 to abut against the joint of the second channel 32 and the third channel 33 in a normal state, so that the second channel 32 and the third channel 33 are sealed. A fourth channel 34 penetrating through the side wall of the third channel 33 is further formed in one side of the third channel 33, and the axial direction of the fourth channel 34 is perpendicular to the axial direction of the third channel 33 and communicates the third channel 33 with the outside. When the dust extractor 44 is started, because the feeding pipe 2 is a closed pipe, under the suction action of the dust extractor 44, outside air can enter through the fourth channel 34, so that the steel ball 35 is pushed to move towards the direction close to the feeding pipe 2, meanwhile, the spring 36 is stretched towards the direction close to the feeding pipe 2, at the moment, the second channel 32 is communicated with the third channel 33, and air can enter into the second channel 32 from the third channel 33 and further enter into the feeding pipe 2 through the first channel 31; when the dust extractor 44 is closed, the spring 36 returns to the normal state and can pull the steel ball 35 to move in a direction away from the feeding pipe 2, and at the moment, the second channel 32 and the third channel 33 are closed, so that air is prevented from entering the feeding pipe 2.
The implementation principle of the embodiment is as follows: when the feeding pipe 2 is cleaned, the first valve 21 is closed, then the cover 22 is connected to the feeding pipe 2, so that a closed environment is formed in the feeding pipe 2, then the second valve 23 on the corresponding feeding pipe 2 is opened, then the dust extractor 44 and the water inlet valve of the water tank 5 are opened, as the feeding pipe 2 is a closed pipeline, under the suction action of the dust extractor 44, outside air can enter through the fourth channel 34, so that the steel ball 35 is pushed to move towards the direction close to the feeding pipe 2, meanwhile, the spring 36 is pulled towards the direction close to the feeding pipe 2, at this time, the second channel 32 is communicated with the third channel 33, air can enter into the second channel 32 from the third channel 33, and then enter into the feeding pipe 2 through the first channel 31, so that fly ash in the feeding pipe 2 can be blown to be collected into the collection box 4 through the collection pipe and the main pipe 43, meanwhile, the spray head 52 sprays the dust collected in the material collecting box 4, and the fly ash adsorbing the water can be quickly settled in the receiving hopper 6, so that the feeding pipe 2 is cleaned; when the transparent receiving hopper 6 is full of the fly ash, the retaining ring 47 is opened from the hasp 61, so that the receiving hopper 6 is pulled out of the collecting box 4, and the fly ash in the collecting box 4 is treated in time.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. The utility model provides a fly ash storage tank with cleaning device, includes that many set up in inlet pipe (2) of storage tank (1) lower extreme, its characterized in that: one end of each of the plurality of inlet pipes (2) close to the storage tank (1) is connected with a first valve (21), the air inlets (41) of the plurality of inlet pipes (2) are detachably connected with cover bodies (22) capable of sealing the air inlets (41), check valve assemblies only allowing outside air to enter the inlet pipes (2) are connected between the corresponding first valves (21) of the plurality of inlet pipes (2) and the cover bodies (22), collecting pipes (24) are connected between the corresponding check valve assemblies of the plurality of inlet pipes (2) and the cover bodies (22), a material collecting box (4) is arranged on one side of the feeding pipe (2), a plurality of collecting pipes (24) are connected with the material collecting box (4), and a dust extractor (44) for pumping the dust in the feeding pipe (2) into the material collection box (4) is arranged on one side of the material collection box (4) far away from the collecting pipe (24).
2. The fly ash storage tank with the cleaning device as set forth in claim 1, wherein: one end of the collecting pipe (24) close to the feeding pipe (2) is communicated with a second valve (23).
3. The fly ash storage tank with the cleaning device as set forth in claim 2, wherein: the filter screen (45) capable of filtering the fly ash is vertically arranged at the position where the collecting box (4) is communicated with the dust extraction pipe of the dust extractor (44).
4. The fly ash storage tank with the cleaning device as set forth in claim 3, wherein: the upper surface rigid coupling of case (4) of gathering materials has water tank (5), water tank (5) outlet pipe downwardly extending has shower nozzle (52) to water tank (5) in and the intercommunication.
5. The fly ash storage tank with the cleaning device as set forth in claim 4, wherein: opening (46) have been seted up to collection workbin (4) one side, the position level that corresponds opening (46) in collection workbin (4) slides and is connected with one and can tend to collection workbin (4) outside bearing fill (6) that slide.
6. The fly ash storage tank with the cleaning device as set forth in claim 1, wherein: the check valve component comprises a supporting column (3) fixedly connected to the peripheral surface of the feeding pipe (2), a first channel (31) communicated with the feeding pipe (2) is formed in the supporting column (3) along the axis direction, a third channel (33) coaxial with the first channel (31) is further formed in one end, away from the feeding pipe (2), of the first channel (31), the radius of the third channel (33) is smaller than that of the first channel (31), a steel ball (35) is arranged at the position where the third channel (33) is communicated with the first channel (31), a spring (36) is fixedly connected between the third channel and the steel ball (35), the spring (36) can pull the steel ball (35) to abut against the connecting position of the second channel (32) and the third channel (33) under a normal state, so that the second channel (32) and the third channel (33) are sealed, a fourth channel (34) penetrating through the side wall of the third channel (33) is further formed in one side of, the axial direction of the fourth passage (34) is perpendicular to the axial direction of the third passage (33) and communicates the third passage (33) with the outside.
7. The fly ash storage tank with the cleaning device as set forth in claim 6, wherein: a second channel (32) which is coaxial with the first channel (31) is arranged between the first channel (31) and the second channel (32), the second channel (32) is conical and can communicate the first channel (31) with a third channel (33), and the radius of one end, close to the feeding pipe (2), of the second channel (32) is larger than that of one end, far away from the feeding pipe (2), of the second channel (32).
8. The fly ash storage tank with the cleaning device as set forth in claim 5, wherein: both ends of the receiving hopper (6) are fixedly connected with hasps (61), and the positions of one side of the two side plates of the material collecting box (4) far away from each other, which correspond to the two hasps (61), are also fixedly connected with retaining rings (47) matched with the hasps (61).
9. The fly ash storage tank with the cleaning device as set forth in claim 8, wherein: the receiving hopper (6) is made of transparent materials and is used as the receiving hopper (6).
10. The fly ash storage tank with the cleaning device as set forth in claim 1, wherein: the collecting pipe (24) is provided with direction cambered surface (25) with inlet pipe (2) junction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921932456.6U CN211168224U (en) | 2019-11-08 | 2019-11-08 | Fly ash storage tank with cleaning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921932456.6U CN211168224U (en) | 2019-11-08 | 2019-11-08 | Fly ash storage tank with cleaning device |
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| Publication Number | Publication Date |
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| CN211168224U true CN211168224U (en) | 2020-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921932456.6U Active CN211168224U (en) | 2019-11-08 | 2019-11-08 | Fly ash storage tank with cleaning device |
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| CN (1) | CN211168224U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112344116A (en) * | 2020-10-10 | 2021-02-09 | 金汝 | Cleanable pipeline |
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2019
- 2019-11-08 CN CN201921932456.6U patent/CN211168224U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112344116A (en) * | 2020-10-10 | 2021-02-09 | 金汝 | Cleanable pipeline |
| CN112344116B (en) * | 2020-10-10 | 2022-07-29 | 金汝 | Cleanable pipeline |
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