CN111331110A - Multi-layer grading type casting cleaning device and cleaning method thereof - Google Patents
Multi-layer grading type casting cleaning device and cleaning method thereof Download PDFInfo
- Publication number
- CN111331110A CN111331110A CN202010178182.7A CN202010178182A CN111331110A CN 111331110 A CN111331110 A CN 111331110A CN 202010178182 A CN202010178182 A CN 202010178182A CN 111331110 A CN111331110 A CN 111331110A
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- cleaning
- box
- cleaning roller
- layer
- casting
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- 238000004140 cleaning Methods 0.000 title claims abstract description 153
- 238000005266 casting Methods 0.000 title claims abstract description 59
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000003860 storage Methods 0.000 claims abstract description 43
- 238000007599 discharging Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 53
- 239000007921 spray Substances 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000009826 distribution Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 2
- 239000012459 cleaning agent Substances 0.000 abstract description 11
- 239000006260 foam Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
- B22D31/002—Cleaning, working on castings
-
- B08B1/143—
-
- B08B1/20—
-
- 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
-
- 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
- B08B3/02—Cleaning by the force of jets or sprays
- B08B3/022—Cleaning travelling work
-
- 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
- B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
-
- 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
- B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids
Abstract
The invention belongs to the technical field of casting processing, and particularly relates to a multi-layer grading type casting cleaning device and a cleaning method thereof, wherein the multi-layer grading type casting cleaning device comprises a rack, a cleaning box, a material discharging box, a cleaning roller set, a conveying belt and a temporary storage box, wherein a motor box is installed on the rack, the cleaning box is fixed above the rack, the material discharging box is positioned on the material feeding side of the cleaning box, and the temporary storage box is positioned on the material discharging side of the cleaning box; according to the invention, through the arrangement of the cleaning roller group, the upper cleaning roller and the lower cleaning roller can rub the surface of the casting passing through the cleaning roller group to a certain extent, and the cleaning agent is increased in foam, so that the cleaning agent is fully contacted with the surface of the casting.
Description
Technical Field
The invention belongs to the technical field of casting processing, and particularly relates to a multi-layer grading type casting cleaning device and a cleaning method thereof.
Background
After the processing and manufacturing of some castings at present, oil stains are often attached to the outer surfaces and the inner cavity surfaces of the castings, and impurities such as residual sand are also generally attached to the inner cavity surfaces of the castings, so that the castings are generally required to be cleaned after the processing and manufacturing of the castings, and the influence of the pollutants such as the residual sand and the oil stains on the casting quality is avoided. In a traditional casting cleaning process, impurities such as residual sand, oil stains and the like on the surface of a casting are cleaned by adopting a manual cleaning mode, but the manual cleaning mode is high in labor intensity, low in cleaning efficiency and difficult to guarantee cleaning quality.
The invention with the application number of CN201710237401.2 discloses a casting cleaning device, which comprises a box body and a cleaning rotary table, wherein the cleaning rotary table is provided with a slide rail, a support net is connected with the slide rail in a sliding way, the bottom of the cleaning rotary table is provided with a vertical shaft rod, the vertical shaft rod is connected with a driving mechanism, an upper waterway pipeline is arranged in the box cover, a lower waterway pipeline is arranged below the cleaning rotary table, nozzles are arranged on the upper waterway pipeline and the lower waterway pipeline respectively, a regulating valve is arranged on the lower waterway pipeline, a first gear is arranged on a valve rod of the regulating valve, a rack is meshed with the first gear, a third gear is meshed with the second gear, the second gear is connected with a rolling shaft, a first blade is arranged in a sealing shell, a second blade is arranged in the shell, the shell is communicated with an air storage tank, the air storage tank is communicated with the lower waterway pipeline, the sealing shell is communicated with the lower waterway pipeline, a water pressurizing device is communicated with the, the sliding block is connected with the rack; the scheme utilizes a vibration mode to increase the cleaning effect of the casting, but the method still cannot achieve a good cleaning effect and has a limited cleaning effect on oil stains.
Disclosure of Invention
The invention provides a multi-layer grading type casting cleaning device and a cleaning method thereof, which aim to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a multilayer grading type casting cleaning device comprises a rack, a cleaning box, a discharging box, a cleaning roller set, a conveying belt and a temporary storage box, wherein a motor box is installed on the rack, the cleaning box is fixed above the rack, the discharging box is positioned on the feeding side of the cleaning box, the temporary storage box is positioned on the discharging side of the cleaning box, the cleaning roller set and the conveying belt are arranged inside the cleaning box, the cleaning roller set is positioned on one side, close to the discharging box, of the cleaning box, the conveying belt is positioned on one side, close to the temporary storage box, of the cleaning box, a transmission box used for driving the conveying belt and the temporary storage box is arranged on one side of the cleaning box, the output end of the motor box is connected to the input end of the transmission box, a high-pressure water pipe is arranged on the other side of the cleaning box, an atomizing nozzle and a high-pressure water nozzle are connected to the high-pressure water pipe, and the atomizing nozzle, the high pressure nozzle is located the top of conveyer belt, clean roller set includes upper cleaning roller and lower floor's cleaning roller, upper cleaning roller and lower floor's cleaning roller all include the single roller of a plurality of continuous distribution, the single roller includes roller, protruding dish and concave dish interval and continuous distribution are in the outer wall of roller, adjacent two protruding dish and concave dish staggered distribution between the single roller.
Preferably, the inside of wasing the case is equipped with the baffle, the baffle is located the top of cleaning roller set and conveyer belt, and is located the junction of cleaning roller set and conveyer belt, the baffle will atomizer and high pressure nozzle separate.
Preferably, the atomizing spray head is connected with a cleaning agent input branch pipe, the atomizing spray head is uniformly distributed above the cleaning roller set, and the spraying area of the atomizing spray head covers the upper part of the cleaning roller set.
Preferably, a feeding port is obliquely arranged above the material placing box, an inclined plate is arranged inside the material placing box, and the bottom of the inclined plate extends to a position between the upper layer cleaning roller and the lower layer cleaning roller.
Preferably, two water storage tanks are installed below the cleaning tank, one of the water storage tanks is located below the cleaning roller group, and the other water storage tank is located below the conveying belt.
Preferably, the bottom of the water storage tank is provided with a valve, the bottom of the valve is provided with a water receiving tank, and the water receiving tank is arranged on the rack.
Preferably, the convex disc and the concave disc both comprise a porous sponge layer and a high-elasticity sponge layer, the porous sponge layer is located on the outer layer of the high-elasticity sponge layer, and deformation holes are formed in the high-elasticity sponge layer.
Preferably, a water supply pipe is provided at one side of the temporary storage tank.
The method for cleaning the casting by utilizing the multi-layer grading type casting cleaning device comprises the following steps:
step S1, putting the materials into the emptying box;
step S2, connecting the high-pressure water pipe with a high-pressure water source;
and step S3, opening the motor box, and fishing out the casting falling into the temporary storage box.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, through the arrangement of the cleaning roller group, the upper cleaning roller and the lower cleaning roller can rub the surface of the casting passing through the cleaning roller group to a certain extent, and the cleaning agent is increased in foam, so that the cleaning agent is fully contacted with the surface of the casting.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic view of the cleaning roller set of the present invention;
fig. 4 is a schematic structural view of the cam of the present invention.
In the figure: 1. a frame; 11. a motor case; 12. a transmission case; 13. a water receiving tank; 2. a cleaning tank; 21. a partition plate; 22. a water storage tank; 23. a valve; 3. a material placing box; 301. a feeding port; 31. a sloping plate; 4. cleaning the roller set; 401. an upper cleaning roller; 402. a lower layer cleaning roller; 403. a porous sponge layer; 404. a high elastic sponge layer; 405. a deformation hole; 41. a roll shaft; 42. a convex disc; 43. a concave disk; 5. a conveyor belt; 6. a temporary storage box; 7. a water supply pipe; 71. a high pressure water pipe; 72. an atomizing spray head; 73. a high-pressure spray head.
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. 1-4, the present invention provides the following technical solutions: a multi-layer grading type casting cleaning device comprises a rack 1, a cleaning box 2, a discharging box 3, a cleaning roller set 4, a conveying belt 5 and a temporary storage box 6, wherein a motor box 11 is installed on the rack 1, the cleaning box 2 is fixed above the rack 1, the discharging box 3 is positioned on the feeding side of the cleaning box 2, the temporary storage box 6 is positioned on the discharging side of the cleaning box 2, the cleaning roller set 4 and the conveying belt 5 are arranged inside the cleaning box 2, the cleaning roller set 4 is positioned on one side, close to the discharging box 3, of the cleaning box 2, the conveying belt 5 is positioned on one side, close to the temporary storage box 6, of the cleaning box 2, a transmission box 12 for driving the conveying belt 5 and the temporary storage box 6 is arranged on one side of the cleaning box 2, the output end of the motor box 11 is connected with the input end of the transmission box 12, a high-pressure water pipe 71 is arranged on the other side of the cleaning box 2, an atomizing nozzle, the high-pressure spray head 73 is positioned above the conveying belt 5, the cleaning roller group 4 comprises an upper layer cleaning roller 401 and a lower layer cleaning roller 402, the upper layer cleaning roller 401 and the lower layer cleaning roller 402 respectively comprise a plurality of single rollers which are continuously distributed, each single roller comprises a roller shaft 41, a convex disc 42 and a concave disc 43, the convex discs 42 and the concave discs 43 are distributed on the outer wall of the roller shaft 41 at intervals and continuously, and the convex discs 42 and the concave discs 43 between every two adjacent single rollers are distributed in a staggered mode.
In this embodiment, the motor box 11 is electrically connected to the electric cabinet for controlling the rotation speed of the motor in the motor box 11, the motor drives the transmission box 12 to rotate through the gear of the output shaft, the transmission box 12 is responsible for inputting power to the cleaning roller set 4 and the conveyor belt 5 in the cleaning box 2, before cleaning, the high-pressure water pipe 71 is connected to the external water source, and the branch pipe of the atomizing nozzle 72 is connected to the cleaning agent supply pipe supplied by the gear pump through the connecting pipe, the mixing ratio of the cleaning agent and the water can be controlled by controlling the flow rate of the gear pump, and then the cleaning agent and the water are uniformly sprayed on the cleaning roller set 4 through the atomizing nozzle 72, the casting is thrown into the discharging box 3 through the feed opening 301, the casting slides into the space between the upper cleaning roller 401 and the lower cleaning roller 402 along the inclined plate 31, and then due to the extrusion, friction and deformation between the upper cleaning roller 401 and the, the casting conveying device has the advantages that the casting conveying device is formed, meanwhile, the surface of the casting is wiped and cleaned, a good cleaning effect is achieved, when the cleaned casting is conveyed backwards, the casting falls onto the conveying belt 5 and is cleaned by the high-pressure spray head 73, the water storage tank 22 below the casting conveying device is provided with the loop branch pipe, the water pump can be returned to the high-pressure spray head 73, recycling is achieved, and when the cleaned casting falls into the temporary storage tank 6, the casting can be fished out and taken away.
Specifically, the inside of wasing case 2 is equipped with baffle 21, and baffle 21 is located the top of cleaning roller set 4 and conveyer belt 5, and is located the junction of cleaning roller set 4 and conveyer belt 5, and the baffle 21 separates atomizer 72 and high pressure nozzle 73, prevents to a certain extent that the sanitizer from entering into on the conveyer belt 5.
Specifically, be connected with the sanitizer input branch pipe on the atomizer 72, the even distribution of atomizer 72 is in the top of cleaning roller set 4, and atomizer 72 sprays the top that the area covered cleaning roller set 4, can realize good clean effect under the condition of not wasting.
Specifically, a feeding port 301 which is obliquely arranged is arranged above the discharging box 3, an inclined plate 31 is arranged inside the discharging box 3, and the bottom of the inclined plate 31 extends to a position between an upper-layer cleaning roller 401 and a lower-layer cleaning roller 402, so that castings can conveniently and smoothly enter the position between the upper-layer cleaning roller 401 and the lower-layer cleaning roller 402.
Specifically, two water storage tanks 22 are installed below the cleaning tank 2, one water storage tank 22 is located below the cleaning roller set 4, and the other water storage tank 22 is located below the conveying belt 5, so that waste water generated by the cleaning roller set 4 and the conveying belt 5 can be collected.
Specifically, a valve 23 is arranged at the bottom of the water storage tank 22, a water receiving tank 13 is arranged at the bottom of the valve 23, and the water receiving tank 13 is arranged on the rack 1 and used for receiving wastewater in the water storage tank 22.
Specifically, protruding dish 42 and concave dish 43 all include porous sponge layer 403 and high-elastic sponge layer 404, and porous sponge layer 403 is located the skin on high-elastic sponge layer 404, is equipped with deformation hole 405 on the high-elastic sponge layer 404, can form better deformation, consequently all increases the area of contact and extrusion force and the frictional force of foundry goods.
Specifically, a water supply pipe 7 is provided at one side of the temporary storage tank 6 to add water to the temporary storage tank 6.
The method for cleaning the casting by utilizing the multi-layer grading type casting cleaning device comprises the following steps:
step S1, putting the materials into a material placing box 3;
step S2, connecting the high-pressure water pipe 71 with a high-pressure water source;
and step S3, opening the motor box 11, and fishing out the casting falling in the temporary storage box 6.
The working principle and the using process of the invention are as follows: the motor box 11 is electrically connected with an electric cabinet and used for controlling the rotating speed control of a motor in the motor box 11, the motor drives a transmission box 12 to rotate through a gear of an output shaft, the transmission box 12 is used for inputting power to a cleaning roller group 4 and a conveying belt 5 in a cleaning box 2, before cleaning, a high-pressure water pipe 71 is connected with an external water source, a cleaning agent supply pipe supplied by a gear pump is connected on a branch pipe of an atomizing spray head 72 through a connecting pipe, the mixing ratio of the cleaning agent and the water can be controlled by controlling the flow rate of the gear pump, then the cleaning agent and the water are uniformly sprayed on the cleaning roller group 4 through the atomizing spray head 72, a casting is put into a discharging box 3 through a feeding port 301, the casting slides into a position between an upper cleaning roller 401 and a lower cleaning roller 402 along an inclined plate 31, and then the conveying of the casting is formed due to the extrusion, friction and deformation between the upper cleaning roller 401, meanwhile, the surface of the casting is wiped and cleaned, a good cleaning effect is achieved, when the cleaned casting is conveyed backwards, the casting falls onto the conveying belt 5 and is cleaned by the high-pressure spray nozzle 73, the water storage tank 22 below the high-pressure spray nozzle is provided with a loop branch pipe, a water pump can be returned to the high-pressure spray nozzle 73, recycling is achieved, and when the cleaned casting falls into the temporary storage tank 6, the casting can be taken out.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a hierarchical formula foundry goods belt cleaning device of multilayer which characterized in that: comprises a frame (1), a cleaning box (2), a discharging box (3), a cleaning roller set (4), a conveying belt (5) and a temporary storage box (6), wherein a motor box (11) is installed on the frame (1), the cleaning box (2) is fixed above the frame (1), the discharging box (3) is positioned on the feeding side of the cleaning box (2), the temporary storage box (6) is positioned on the discharging side of the cleaning box (2), the cleaning roller set (4) and the conveying belt (5) are arranged inside the cleaning box (2), the cleaning roller set (4) is positioned on one side of the cleaning box (2) close to the discharging box (3), the conveying belt (5) is positioned on one side of the cleaning box (2) close to the temporary storage box (6), a transmission box (12) for driving the conveying belt (5) and the temporary storage box (6) is arranged on one side of the cleaning box (2), the output end of the motor box (11) is connected with the input end of the transmission box (12), the other side of the cleaning box (2) is provided with a high-pressure water pipe (71), the high-pressure water pipe (71) is connected with an atomizing nozzle (72) and a high-pressure nozzle (73), the atomizing spray head (72) is positioned above the cleaning roller group (4), the high-pressure spray head (73) is positioned above the conveying belt (5), the cleaning roller group (4) comprises an upper layer cleaning roller (401) and a lower layer cleaning roller (402), the upper layer cleaning roller (401) and the lower layer cleaning roller (402) respectively comprise a plurality of single rollers which are distributed continuously, the single roller comprises a roller shaft (41), a convex disc (42) and a concave disc (43), the convex discs (42) and the concave discs (43) are distributed on the outer wall of the roller shaft (41) at intervals and continuously, and the convex discs (42) and the concave discs (43) between two adjacent single rollers are distributed in a staggered mode.
2. The multi-layer staged casting cleaning apparatus of claim 1, wherein: wash the inside of case (2) and be equipped with baffle (21), baffle (21) are located the top of cleaning roller set (4) and conveyer belt (5), and are located the junction of cleaning roller set (4) and conveyer belt (5), baffle (21) will atomizer (72) and high pressure nozzle (73) separate.
3. The multi-layer staged casting cleaning apparatus of claim 1, wherein: be connected with sanitizer input branch pipe on atomizer (72), the even distribution of atomizer (72) is in the top of cleaning roller set (4), the area of spraying of atomizer (72) covers the top of cleaning roller set (4).
4. The multi-layer staged casting cleaning apparatus of claim 1, wherein: the cleaning device is characterized in that a feeding port (301) is obliquely arranged above the material placing box (3), an inclined plate (31) is arranged inside the material placing box (3), and the bottom of the inclined plate (31) extends to a position between the upper layer cleaning roller (401) and the lower layer cleaning roller (402).
5. The multi-layer staged casting cleaning apparatus of claim 1, wherein: two water storage tanks (22) are installed below the cleaning tank (2), one of the water storage tanks (22) is located below the cleaning roller set (4), and the other water storage tank (22) is located below the conveying belt (5).
6. The multi-layer staged casting cleaning apparatus of claim 5, wherein: the water storage tank is characterized in that a valve (23) is arranged at the bottom of the water storage tank (22), a water receiving tank (13) is arranged at the bottom of the valve (23), and the water receiving tank (13) is arranged on the rack (1).
7. The multi-layer staged casting cleaning apparatus of claim 1, wherein: protruding dish (42) and concave dish (43) all include porous sponge layer (403) and high-elastic sponge layer (404), porous sponge layer (403) are located the skin on high-elastic sponge layer (404), be equipped with deformation hole (405) on high-elastic sponge layer (404).
8. The multi-layer staged casting cleaning apparatus of claim 1, wherein: one side of the temporary storage box (6) is provided with a water supply pipe (7).
9. A method for cleaning a casting is characterized by comprising the following steps: the use of the multi-layer staged casting cleaning apparatus of any one of claims 1 to 8, comprising the steps of:
step S1, putting the materials into the material placing box (3);
step S2, connecting the high-pressure water pipe (71) with a high-pressure water source;
and step S3, opening the motor box (11), and fishing out the casting falling in the temporary storage box (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010178182.7A CN111331110A (en) | 2020-03-14 | 2020-03-14 | Multi-layer grading type casting cleaning device and cleaning method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010178182.7A CN111331110A (en) | 2020-03-14 | 2020-03-14 | Multi-layer grading type casting cleaning device and cleaning method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111331110A true CN111331110A (en) | 2020-06-26 |
Family
ID=71176360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010178182.7A Withdrawn CN111331110A (en) | 2020-03-14 | 2020-03-14 | Multi-layer grading type casting cleaning device and cleaning method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111331110A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111842863A (en) * | 2020-08-10 | 2020-10-30 | 马鞍山市兴隆铸造有限公司 | Foundry goods sand removal device convenient to upset |
-
2020
- 2020-03-14 CN CN202010178182.7A patent/CN111331110A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111842863A (en) * | 2020-08-10 | 2020-10-30 | 马鞍山市兴隆铸造有限公司 | Foundry goods sand removal device convenient to upset |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200626 |
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| WW01 | Invention patent application withdrawn after publication |