CN115487928B - Crushing and filtering device with nitrogen protection - Google Patents
Crushing and filtering device with nitrogen protection Download PDFInfo
- Publication number
- CN115487928B CN115487928B CN202210983661.5A CN202210983661A CN115487928B CN 115487928 B CN115487928 B CN 115487928B CN 202210983661 A CN202210983661 A CN 202210983661A CN 115487928 B CN115487928 B CN 115487928B
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- pipe
- fixedly connected
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- sliding
- nitrogen
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Classifications
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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
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
- B02C23/24—Passing gas through crushing or disintegrating zone
- B02C23/26—Passing gas through crushing or disintegrating zone characterised by point of gas entry or exit or by gas flow path
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/14—Production of inert gas mixtures; Use of inert gases in general
Abstract
The utility model relates to the technical field of crushing devices, in particular to a crushing and filtering device with nitrogen protection, which comprises an exhaust pipe, wherein a collecting mechanism is arranged on the outer surface of the exhaust pipe, the collecting mechanism comprises a connecting pipe and a treatment pipe, the inner surface of the connecting pipe is communicated with the inner surface of the exhaust pipe in a penetrating way, a through connecting groove is formed in the treatment pipe, the outer surface of the connecting pipe is fixedly connected with the inner surface of the connecting groove, a fan is fixedly connected with the inner surface of the connecting pipe, a sealing plate is slidably connected with the inner surface of the treatment pipe, and a negative pressure valve pipe is communicated with the inner surface of the treatment pipe in a penetrating way. Solves the problems that the prior crushing and filtering equipment with nitrogen protection is easy to cause the pollution of nitrogen, the reduction of the purity of the nitrogen and the adverse recycling. In the using process, the nitrogen is directly discharged without a recovery measure, so that the external environment is easily influenced, the production cost is increased, and the problem of certain danger is solved when the nitrogen flowing at a high speed is discharged.
Description
Technical Field
The utility model relates to the technical field of crushing devices, in particular to a crushing and filtering device with nitrogen protection.
Background
The protecting gas is mainly used for preventing the protected substances from being oxidized by oxygen in the air, the protecting gas is required to be gas which has stable chemical property and is not easy to react with the protecting substances, generally inert gas or gas which is not reacted with reactants is introduced into a reaction device, and the protecting gas is generally nitrogen, has inactive chemical property, wide sources and low market value.
Through searching, in the utility model with the publication number of CN213762121U, an organic luminescent material crushing workbench is disclosed, which comprises a crushing device, a closed cavity and a container; the device screens crushed materials according to the particle size through the filter screen, and the crushed materials fall into the container to be collected, the whole material grinding process is carried out under a closed environment, negative influences on personnel and production environment caused by dust splashing are avoided, and the quality of the organic luminescent material is improved.
The device is through nitrogen gas as the shielding gas to through the positive pressure cyclone that the rotation of flowing nitrogen gas atmospheric pressure offset cutter produced, thereby avoid smashing material granule and splash, but the device still has certain drawback when using, at first the inside floater and the air that easily fly away that easily exist of device, when nitrogen gas directly gets into the device and put into use, lead to the fact nitrogen gas concentration to reduce and the material is polluted easily, secondly flowing nitrogen gas directly discharges through the blast pipe, and do not set up the recovery measure, not only influence outside air environment, and direct emission has increased manufacturing cost, and high-speed flowing nitrogen gas produces certain danger easily, consequently need solve above-mentioned problem.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides the crushing and filtering device with the nitrogen protection, which solves the problems that the nitrogen is easy to be polluted, the purity of the nitrogen is reduced, the recycling is not facilitated, and in the using process, the direct nitrogen discharge is not provided with recycling measures, the external environment is easy to be influenced, the production cost is increased, and in addition, the high-speed flowing nitrogen discharge has a certain danger.
In order to achieve the above purpose, the utility model is realized by the following technical scheme: the utility model provides a take crushing filter equipment of nitrogen protection, includes the blast pipe, the surface of blast pipe is provided with collection mechanism, collection mechanism includes the connecting tube and handles the pipe, the internal surface of connecting tube runs through the intercommunication with the internal surface of blast pipe, the continuous groove has been seted up to the inside of handling the pipe, the surface and the internal surface fixed connection of continuous groove of connecting tube, the internal surface fixed connection of connecting tube has the fan, the internal surface sliding connection of handling the pipe has the closing plate, the internal surface of handling the pipe runs through the intercommunication and has the negative pressure valve pipe, the one end intercommunication of negative pressure valve pipe has the check valve pipe, the surface of check valve pipe runs through fixedly connected with connector.
Preferably, the inner surface of connecting pipe has seted up the spout, the inner surface sliding connection of spout has the slide, the surface fixedly connected with slide post of slide, the surface of slide post respectively with connecting pipe, even groove and the inner surface sliding connection of handling the pipe, the surface fixedly connected with baffle of slide post, the surface of baffle and the surface swing joint of connecting pipe, the surface of baffle respectively with even groove and the inner surface sliding connection of handling the pipe.
Preferably, the outside of slide is provided with spacing subassembly, the surface fixedly connected with spring rod of slide, one end of spring rod and one side fixed connection of spout internal surface.
Preferably, the limiting component comprises a clamping groove, the clamping groove is formed in the sliding plate and is in a penetrating state, the inner surface of the clamping groove is clamped with a clamping strip, and the outer surface of the clamping strip is in sliding connection with the inner surface of the connecting pipe.
Preferably, the inside of card strip runs through threaded connection and has the lead screw, the one end of lead screw is through shaft coupling fixedly connected with elevator motor, elevator motor's surface and the internal surface fixed connection of connecting pipe, the surface joint of card strip has the holder, the surface of holder and the internal surface fixed connection of connecting pipe.
Preferably, the inside of closing plate runs through fixedly connected with flange nut, the surface of flange nut respectively with the internal surface swing joint of handling pipe and negative pressure valve pipe, the inner wall threaded connection of flange nut has the screw rod, the surface of screw rod rotates with the internal surface of handling the pipe and is connected.
Preferably, the outer surface of the screw is fixedly connected with a bearing, the outer surface of the bearing is fixedly connected with a support plate in a penetrating mode, and the outer surface of the support plate is fixedly connected with the inner surface of the treatment pipe.
Preferably, the outer surface of the support plate is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a first gear, the outer surface of the first gear is meshed with a second gear, and the inner part of the second gear is fixedly connected with the outer surface of the screw rod in a penetrating mode.
The utility model provides a crushing and filtering device with nitrogen protection. Compared with the prior art, the method has the following beneficial effects:
(1) Through setting up collection mechanism, through blast pipe, connecting tube, processing pipe, negative pressure valve pipe and check valve pipe isotructure, a nitrogen gas recovery pipeline has been constituteed, when the device uses, at first the inside air of fan extraction device to discharge to the external world through the check valve pipe, thereby make the inside vacuum of device, when nitrogen gas inserts, can not cause nitrogen gas concentration to reduce, and the floater that just wafts can be filtered by clean filter core, thereby avoid the material to suffer from the pollution, simultaneously in the use, connect empty nitrogen bottle through the connector, the nitrogen gas that flows can directly store in the nitrogen bottle, realize retrieving and recycle, save manufacturing cost.
(2) Through setting up the connection pipe isotructure, the connection pipe is the recovery of nitrogen gas, provides flow and operating space, and the baffle receives the atmospheric pressure effect, slides to the inside of handling the pipe by the even groove to break away from the shielding to connection pipe one side, make the inside of connection pipe and handling the intraduct, be linked together through the even groove, be convenient for gaseous flow, and the slide is connected with spout and spring bar, be convenient for carry out spacing and reset to the motion of baffle, the baffle is shielded to the connection pipe simultaneously, the single operation of handling the intraduct of being convenient for handles.
(3) Through setting up spacing subassembly, at first card strip and the connection of draw-in groove, can carry out spacingly when moving to the baffle, avoided simultaneously causing the hindrance to the motion of baffle, secondly elevator motor drives the lead screw and rotates for the card strip rises along the lead screw, and with clamping frame looks joint, thereby can carry out spacingly to the slide, make the baffle unable slip, avoid the baffle to influence the motion of closing plate.
(4) Through setting up seal plate isotructure, driving motor passes through the meshing of gear one and gear two, drive the screw rod rotation, threaded connection through screw rod and flange nut, make flange nut drive the seal plate slide from top to bottom along the screw rod, at first during material processing, the seal plate is repeated up-and-down motion, and the motion position is not more than the position of linking the groove, pressurize the nitrogen gas that flows, thereby it retrieves inside the nitrogen cylinder to be convenient for it, secondly, after the material is smashed, the seal plate is along the straight down of screw rod, thereby pressurize through compression space, make the inside nitrogen gas of handling pipe wholly retrieve inside the nitrogen cylinder, accomplish the whole recovery of nitrogen gas, avoid leaking to external influence environment, and increase manufacturing cost.
Drawings
FIG. 1 is a perspective view of an external structure of the present utility model;
FIG. 2 is a cross-sectional view showing the internal structure of the process tube of the present utility model;
FIG. 3 is a perspective view showing the external structure of the support plate of the present utility model;
FIG. 4 is a sectional view of the internal structure of the connecting tube of the present utility model;
fig. 5 is a perspective view showing the external structure of the skateboard of the present utility model.
In the figure: 1. an exhaust pipe; 2. a connecting pipe; 21. a chute; 22. a slide plate; 23. a spool; 24. a baffle; 25. a limit component; 251. a clamping groove; 252. clamping strips; 253. a screw rod; 254. a lifting motor; 255. a clamping frame; 26. a spring rod; 3. a treatment tube; 4. a connecting groove; 5. a blower; 6. a sealing plate; 61. a flange nut; 62. a screw; 63. a bearing; 64. a support plate; 65. a driving motor; 66. a first gear; 67. a second gear; 7. a negative pressure valve tube; 8. a one-way valve tube; 9. and (5) a connector.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, the present utility model provides a technical solution: the utility model provides a take crushing filter equipment of nitrogen protection, including blast pipe 1, blast pipe 1's surface is provided with collection mechanism, collection mechanism includes connecting pipe 2 and processing pipe 3, connecting pipe 2's internal surface runs through the intercommunication with blast pipe 1's internal surface, connecting groove 4 that link up has been seted up to processing pipe 3's inside, connecting pipe 2's surface and connecting groove 4's internal surface fixed connection, connecting pipe 2's internal surface fixed connection has fan 5, fan 5 and external control circuit electric connection, processing pipe 3's internal surface sliding connection has closing plate 6, closing plate 6 adopts resistance to compression stand wear and sealing nature good material to make, processing pipe 3's internal surface runs through the intercommunication and has negative pressure valve pipe 7, be provided with the negative pressure valve on the negative pressure valve pipe 7, be convenient for directly observe the inside atmospheric pressure of device, the one end intercommunication of negative pressure valve pipe 7 has check valve pipe 8, check valve pipe 8 has avoided gaseous backward flow, thereby the influence to the recovery of nitrogen gas, the surface through fixedly connected with connector 9 of check valve pipe 8, through setting up collection mechanism, through blast pipe 2, processing pipe 3, negative pressure valve pipe 7 and check valve pipe 8 and other structures, when one is used in advance, nitrogen cylinder 5 is polluted at first, can be reduced in the air cylinder through the filter core, and the filter core is realized, can be polluted in the air filter equipment, and the filter core is directly can be reduced in the air-out through the filter equipment, and the filter equipment is polluted in the air, the filter equipment is realized, the filter equipment is empty and the filter equipment is discharged through the air, at the inside the filter equipment is empty and can be polluted in the air at the inside the filter equipment.
The inner surface of connecting pipe 2 has seted up spout 21, the inner surface sliding connection of spout 21 has slide 22, slide 22's surface fixedly connected with slide 23, slide 23's surface respectively with connecting pipe 2, even groove 4 and the inner surface sliding connection of handling pipe 3, slide 23's surface fixedly connected with baffle 24, baffle 24 adopts the material that resistance to compression is wear and tear and the leakproofness is good to make, and surface one side flushes with handling pipe 3 inner wall, baffle 24's surface and connecting pipe 2's surface swing joint, baffle 24's surface respectively with even groove 4 and handling pipe 3's inner surface sliding connection, through setting up structures such as connecting pipe 2, connecting pipe 2 is the recovery of nitrogen gas, provide flow and operating space, baffle 24 receives the pneumatic action, slide to handling pipe 3 inside by even groove 4, thereby break away from the shelter from to connecting pipe 2 one side inside and handling pipe 3 inside, be linked together through even groove 4, the gas flow is convenient for, and slide 22 and spout 21's connection, be convenient for carry out spacing and reset to baffle 24's motion, simultaneously baffle 24 shelter from handling pipe 2 inside handling pipe 3 is convenient for handling pipe 3 alone.
The outside of slide 22 is provided with spacing subassembly 25, and the surface fixedly connected with spring bar 26 of slide 22, one end of spring bar 26 and one side fixed connection of spout 21 internal surface can inject the motion of baffle 24 through setting up spring bar 26, is convenient for the reset of baffle 24 through elasticity resilience simultaneously.
The limiting component 25 comprises a clamping groove 251, the clamping groove 251 is formed in the sliding plate 22 and is in a penetrating state, the inner surface of the clamping groove 251 is clamped with a clamping strip 252, the outer surface of the clamping strip 252 is slidably connected with the inner surface of the connecting pipe 2, and the clamping groove 251 and the clamping strip 252 are clamped to limit the movement of the sliding plate 22 to a certain degree, and meanwhile, the movement of the sliding plate 22 and the movement of the baffle 24 are prevented from being influenced.
The inside of card strip 252 runs through threaded connection and has lead screw 253, the one end of lead screw 253 passes through shaft coupling fixedly connected with elevator motor 254, elevator motor 254 adopts servo motor to make to with external control circuit electric connection, elevator motor 254's surface and connecting pipe 2's internal surface fixed connection, card strip 252's surface joint has clamp holder 255, clamp holder 255's surface and connecting pipe 2's internal surface fixed connection, through elevator motor 254 and lead screw 253's combination, can adjust card strip 252's height, realize limiting of slide 22 under the different operating modes, card strip 252 and clamp holder 255's joint simultaneously, when making card strip 252 spacing to slide 22, bear pressure by clamp holder 255, avoid lead screw 253 and elevator motor 254 to receive the pressure and damage.
The inside of closing plate 6 runs through fixedly connected with flange nut 61, and flange nut 61 is made by the swivel nut that has the ring flange, and the surface of flange nut 61 is with the interior surface swing joint of handling pipe 3 and negative pressure valve pipe 7 respectively, and the inner wall threaded connection of flange nut 61 has screw rod 62, and the surface of screw rod 62 is connected with the interior surface rotation of handling pipe 3, through the combination of screw rod 62 and flange nut 61, can play drive and guide effect to the motion of closing plate 6.
The bearing 63 is fixedly connected with the outer surface of the screw 62, the support plate 64 is fixedly connected with the outer surface of the bearing 63 in a penetrating manner, the outer surface of the support plate 64 is fixedly connected with the inner surface of the treatment tube 3, and the combination of the bearing 63 and the support plate 64 enhances the stability of the screw 62 and facilitates the rotation of the screw 62.
The external surface fixedly connected with driving motor 65 of extension board 64, driving motor 65 adopts servo motor to make to with external control circuit electric connection, and support and set up in the inside of handling pipe 3 by extension board 64, strengthened the holistic leakproofness of handling pipe 3, driving motor 65's output fixedly connected with gear one 66, gear one 66's surface meshing has gear two 67, and the inside of gear two 67 runs through fixed connection with screw 62's surface, and driving motor 65 positive and negative rotation can drive screw 62 through the meshing of gear one 66 and gear two 67, thereby drive closing plate 6 up-and-down motion.
And all that is not described in detail in this specification is well known to those skilled in the art.
During operation, the nitrogen bottle containing nitrogen is connected with the air inlet of the smashing device, no nitrogen is released, the fan 5 is electrified to draw air in the smashing device and the container, the air enters the connecting tube 2 through the exhaust tube 1, meanwhile, the clean filter element filters flowing air, impurities in the air are adsorbed, the air enters the connecting tube 2, the air pressure is increased by the fan 5, the baffle 24 is pushed to move, the baffle 24 moves from the inside of the connecting groove 4 to the inside of the processing tube 3, the connecting tube 2 is communicated with the inside of the processing tube 3, the air is discharged to the outside through the processing tube 3, the negative pressure valve tube 7 and the one-way valve tube 8, after the whole air in the device is completely emptied, the fan 5 stops working after being observed through the negative pressure meter, then is connected with the nitrogen bottle which is otherwise empty through the connector 9, then the nitrogen bottle at the air inlet releases nitrogen, the released nitrogen flows into the empty nitrogen cylinder for recycling, and simultaneously the air pressure in the device is recovered, then the material crushing work can be carried out, after the material crushing is finished, the nitrogen cylinder at the air inlet stops releasing nitrogen, then the fan 5 is electrified again to work, the nitrogen in the device is extracted and is discharged to the nitrogen cylinder at the connector 9 through the treatment pipe 3, when the nitrogen in the device and the connecting pipe 2 is extracted, the fan 5 stops working, then the spring rod 26 is used for restoring the baffle plate 24 through elasticity and matching with negative pressure suction force, so that one side of the connecting pipe 2 is shielded, the blocking to the movement of the sealing plate 6 is avoided, then the lifting motor 254 drives the screw rod 253 to rotate, the clamping strip 252 moves along the screw rod 253 and is clamped with the clamping frame 255, therefore, the sliding plate 22 is limited to enhance the stability of the baffle plate 24, then the driving motor 65 is meshed with the first gear 66 and the second gear 67 to enable the screw rod 62 to rotate, and the sealing plate 6 is connected with the flange nut 61 through threads of the screw rod 62, so that the sealing plate 6 moves along the screw rod 62, the air pressure is increased through the compression space, nitrogen in the treatment tube 3 is fully recycled into the nitrogen cylinders at the joint 9, and finally the two nitrogen cylinders are disassembled, and the container is disassembled, so that the processing can be completed.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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 utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a take nitrogen protection's crushing filter equipment, includes blast pipe (1), its characterized in that: the outer surface of blast pipe (1) is provided with collection mechanism, collection mechanism includes connecting tube (2) and treatment pipe (3), the internal surface of connecting tube (2) runs through the intercommunication with the internal surface of blast pipe (1), link groove (4) that link is seted up to the inside of treatment pipe (3), the surface of connecting tube (2) and the internal surface fixed connection of link groove (4), the internal surface fixedly connected with fan (5) of connecting tube (2), the internal surface sliding connection of treatment pipe (3) has closing plate (6), the internal surface of treatment pipe (3) runs through the intercommunication and has negative pressure valve pipe (7), one end intercommunication of negative pressure valve pipe (7) has check valve pipe (8), the surface of check valve pipe (8) runs through fixedly connected with connector (9);
the inner surface of the connecting pipe (2) is provided with a sliding groove (21), the inner surface of the sliding groove (21) is connected with a sliding plate (22) in a sliding manner, the outer surface of the sliding plate (22) is fixedly connected with a sliding column (23), the outer surface of the sliding column (23) is respectively connected with the inner surfaces of the connecting pipe (2), the connecting groove (4) and the treatment pipe (3) in a sliding manner, the outer surface of the sliding column (23) is fixedly connected with a baffle plate (24), the outer surface of the baffle plate (24) is movably connected with the outer surface of the connecting pipe (2), the outer surface of the baffle plate (24) is respectively connected with the inner surfaces of the connecting groove (4) and the treatment pipe (3) in a sliding manner, the outer surface of the sliding plate (22) is fixedly connected with a spring rod (26), and one end of the spring rod (26) is fixedly connected with one side of the inner surface of the sliding groove (21).
Limiting component (25) are including draw-in groove (251), the inside at slide (22) is seted up to draw-in groove (251) and is link up the state, the internal surface joint of draw-in groove (251) has draw-in strip (252), the surface of draw-in strip (252) and the internal surface sliding connection of connecting pipe (2), the inside of draw-in strip (252) runs through threaded connection and has lead screw (253), the one end of lead screw (253) is passed through shaft coupling fixedly connected with elevator motor (254), the surface of elevator motor (254) is with the internal surface fixed connection of connecting pipe (2), the surface joint of draw-in strip (252) has clamp holder (255), the surface of clamp holder (255) is with the internal surface fixed connection of connecting pipe (2).
2. The pulverizing and filtering apparatus with nitrogen protection according to claim 1, wherein: the inside of closing plate (6) runs through fixedly connected with flange nut (61), the surface of flange nut (61) respectively with the internal surface swing joint of processing pipe (3) and negative pressure valve pipe (7), the inner wall threaded connection of flange nut (61) has screw rod (62), the surface of screw rod (62) rotates with the internal surface of processing pipe (3) and is connected.
3. The pulverizing and filtering device with nitrogen protection according to claim 2, wherein: the outer surface of screw rod (62) fixedly connected with bearing (63), the surface of bearing (63) runs through fixedly connected with extension board (64), the surface of extension board (64) is fixedly connected with the interior surface of handling pipe (3).
4. A nitrogen protected pulverizing and filtering apparatus as defined in claim 3, wherein: the outer surface fixedly connected with driving motor (65) of extension board (64), the output fixedly connected with gear one (66) of driving motor (65), the surface meshing of gear one (66) has gear two (67), the inside of gear two (67) runs through fixed connection with the surface of screw rod (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210983661.5A CN115487928B (en) | 2022-08-17 | 2022-08-17 | Crushing and filtering device with nitrogen protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210983661.5A CN115487928B (en) | 2022-08-17 | 2022-08-17 | Crushing and filtering device with nitrogen protection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115487928A CN115487928A (en) | 2022-12-20 |
| CN115487928B true CN115487928B (en) | 2023-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210983661.5A Active CN115487928B (en) | 2022-08-17 | 2022-08-17 | Crushing and filtering device with nitrogen protection |
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| CN (1) | CN115487928B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115845675B (en) * | 2023-02-23 | 2023-05-16 | 深圳市迈捷生命科学有限公司 | Collagen solution separation system |
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| CN214098235U (en) * | 2020-07-15 | 2021-08-31 | 江苏永盛生物科技有限公司 | Automatic pressure control equipment for production of pig plasma protein powder |
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| NZ706072A (en) * | 2013-03-08 | 2018-12-21 | Xyleco Inc | Equipment protecting enclosures |
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| KR200250818Y1 (en) * | 2001-07-04 | 2001-11-16 | 김기동 | The air extract system using piston cylinder |
| CN1473659A (en) * | 2003-08-12 | 2004-02-11 | 西安交通大学 | Multifunctional scraper stirring ball mill |
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| Publication number | Publication date |
|---|---|
| CN115487928A (en) | 2022-12-20 |
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