CN217796550U - Liquid nitrogen grinding device - Google Patents
Liquid nitrogen grinding device Download PDFInfo
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- CN217796550U CN217796550U CN202221658062.8U CN202221658062U CN217796550U CN 217796550 U CN217796550 U CN 217796550U CN 202221658062 U CN202221658062 U CN 202221658062U CN 217796550 U CN217796550 U CN 217796550U
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- liquid nitrogen
- hopper
- baffle plate
- material baffle
- cyclone separator
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Abstract
The utility model discloses a liquid nitrogen grinding device, which belongs to the technical field of grinding equipment and comprises a feed hopper, a grinder, a draught fan, a first cyclone separator and a liquid nitrogen storage tank; in addition, the device also comprises a feeding platform; the feeding hopper is clamped on the feeding platform, and a first material baffle plate and a second material baffle plate are horizontally movably arranged in the feeding hopper; two driving mechanisms are arranged on the feeding platform; and an output shaft of the driving mechanism is in transmission connection with the first material baffle plate and the second material baffle plate respectively. The utility model discloses a set up two mobilizable striker plates of high difference in the feeder hopper, in-process throwing the material to the feeder hopper, there is the striker plate all the time in the feeder hopper, and the liquid nitrogen in the hopper can receive blockking of striker plate, therefore, throwing the in-process of material to the feeder hopper, the liquid nitrogen can't volatilize to the external world from the upper portion of feeder hopper to the extravagant problem of liquid nitrogen has been improved.
Description
Technical Field
The utility model relates to a crushing apparatus technical field, in particular to liquid nitrogen milling equipment.
Background
High molecular material (for example polypropylene, polyester, nylon etc.) is when smashing, will treat kibbling powder usually and cool off, avoids the too high emergence of softening of temperature in the powder crushing process, and the condition of not being convenient for smash takes place, and liquid nitrogen rubbing crusher can be fine solution high molecular material smash the problem that the in-process takes place to soften.
Macromolecular material is at the in-process that drops into liquid nitrogen rubbing crusher, generally need carry out the precooling to it to powder can kibbling more thoroughly when smashing, therefore current liquid nitrogen rubbing crusher during operation, the feeder hopper has all let in the liquid nitrogen, so that the powder can be cooled by the liquid nitrogen after entering into the feeder hopper, but at the in-process of throwing the material to the feeder hopper, the liquid nitrogen volatilizees easily in the feeder hopper, thereby causes the waste of liquid nitrogen.
It is seen that improvements and enhancements to the prior art are needed.
SUMMERY OF THE UTILITY MODEL
In view of the foregoing prior art's weak point, the utility model aims to provide a liquid nitrogen milling equipment aims at solving the in-process that macromolecular material drops into liquid nitrogen rubbing crusher feeder hopper, and the liquid nitrogen volatilizees to the external world from the feeder hopper easily to cause the extravagant problem of liquid nitrogen.
In order to achieve the purpose, the utility model adopts the following technical proposal:
a liquid nitrogen grinding device comprises a feed hopper, a grinder connected with the feed hopper, an induced draft fan connected with the grinder, a first cyclone separator connected with the induced draft fan, and a liquid nitrogen storage tank connected with the induced draft fan; the top of the first cyclone separator is connected with a liquid nitrogen recovery pipe; the other end of the liquid nitrogen recovery pipe is communicated with the feed hopper; the device also comprises a feeding platform; the feeding hopper is clamped on the feeding platform, and a first material baffle plate and a second material baffle plate are horizontally movably arranged in the feeding hopper; two driving mechanisms are arranged on the feeding platform; and output shafts of the two driving mechanisms are in transmission connection with the first material baffle and the second material baffle respectively.
In the liquid nitrogen pulverizing device, the driving mechanism comprises a cylinder body and a piston rod movably connected with the inside of the cylinder body; the piston rod is horizontally arranged and connected with the first material baffle plate or the second material baffle plate.
In the liquid nitrogen grinding device, the second baffle plate is arranged below the first baffle plate; the liquid nitrogen storage tank is connected with a first liquid nitrogen conveying pipe and a second liquid nitrogen conveying pipe; the first liquid nitrogen delivery pipe is connected with the pulverizer; the second liquid nitrogen conveying pipe is connected with the feed hopper; and the second material baffle plate is positioned above the joint of the second liquid nitrogen conveying pipe and the feed hopper.
Further, the liquid nitrogen grinding device also comprises a second cyclone separator; the second cyclone separator is connected with the first cyclone separator, and the second cyclone separator is connected with the induced draft fan.
In the liquid nitrogen grinding device, the bottom of the second cyclone separator is connected with a discharging pipe; and a first discharging control valve is arranged on the discharging pipe.
Further, the liquid nitrogen grinding device also comprises a first material lifting machine and a storage hopper; the storage hopper is arranged on the ground; the first material lifting machine is used for conveying raw materials in the storage hopper into the feed hopper.
In the liquid nitrogen grinding device, a discharge pipe is arranged at the bottom of the storage hopper; a second discharge control valve is arranged on the discharge pipe; the second discharge control valve is electrically connected with a controller; the driving mechanism is electrically connected with the controller.
Has the beneficial effects that:
the utility model provides a liquid nitrogen milling equipment through set up two mobilizable striker plates of high difference in the feeder hopper, throws the in-process of material to the feeder hopper, has existed the striker plate in the feeder hopper all the time, and the liquid nitrogen in the hopper can receive blockking of striker plate, therefore, throws the in-process of material to the feeder hopper, and the liquid nitrogen can't volatilize to the external world from the upper portion of feeder hopper to the extravagant problem of liquid nitrogen has been improved.
Drawings
Fig. 1 is a first structural schematic diagram of the liquid nitrogen grinding device provided by the utility model.
Fig. 2 is a schematic structural diagram of the liquid nitrogen milling device provided by the utility model.
Description of the main element symbols:
1-a feed hopper; 2-a pulverizer; 3, a draught fan; 4-a first cyclone separator; 5-a liquid nitrogen storage tank; 6-liquid nitrogen recovery pipe; 7-feeding platform; 8-a first striker plate; 9-a second baffle plate; 10-a drive mechanism; 101-cylinder body; 102-a piston rod; 11-a first liquid nitrogen delivery pipe; 12-a second liquid nitrogen delivery pipe; 13-a second cyclone; 14-a first discharge control valve; 15-a first lifter; 16-a second material lifting machine; 17-a storage hopper; 18-a discharge pipe; 19-second outlet control valve.
Detailed Description
The utility model provides a liquid nitrogen milling equipment, for making the utility model discloses a purpose, technical scheme and effect are clearer, clear and definite, and it is right that the following refers to the attached drawing and the embodiment of lifting makes further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.
As shown in fig. 1, the utility model provides a liquid nitrogen grinding device, which comprises a feed hopper 1, a second material lifting machine 16 connected with the feed hopper 1, a grinder 2 connected with the second material lifting machine 16, an induced draft fan 3 connected with the grinder 2, a first cyclone separator 4 connected with the induced draft fan 3, and a liquid nitrogen storage tank 5 connected with the induced draft fan 3; the top of the first cyclone separator 4 is connected with a liquid nitrogen recovery pipe 6; the other end of the liquid nitrogen recovery pipe 6 is communicated with the feed hopper 1. After the high polymer material is put into the feed hopper 1, the high polymer material is sent into a crusher 2 filled with liquid nitrogen through a second material lifting machine 16 to be crushed at low temperature; pumping the crushed powder into a first cyclone separator 4 through a draught fan 3, and discharging from the bottom of the first cyclone separator 4; and the liquid nitrogen that draught fan 3 pumped to in the first cyclone 4 is discharged from the top of first cyclone 4 to through liquid nitrogen recovery pipe 6 backward flow to in feeder hopper 1 reutilization, in order to be used for carrying out the precooling to the macromolecular material in the feeder hopper 1 or entering into rubbing crusher 2 once more along with the macromolecular material.
As shown in fig. 1, further, the liquid nitrogen milling device further comprises a feeding platform 7; the feeding hopper 1 is clamped on the feeding platform 7, and a first material baffle plate 8 and a second material baffle plate 9 are horizontally and movably arranged in the feeding hopper 1; two driving mechanisms 10 are arranged on the feeding platform 7; the output shafts of the two driving mechanisms 10 are respectively in transmission connection with the first striker plate 8 and the second striker plate 9. The driving mechanism 10 can drive the first material baffle 8 and the second material baffle 9, so that the two material baffles can move into the feed hopper 1 or move to one side of the outside of the feed hopper 1 (the outer wall of the feed hopper 1 is provided with through holes matched with the two material baffles).
The utility model arranges the movable first striker plate 8 and the second striker plate 9 in the feed hopper 1, when feeding to the feed hopper 1 is needed, the first striker plate 8 and the second striker plate 9 are both positioned in the feed hopper 1, and the high polymer material can fall on the first striker plate 8 at first; after the high polymer material with the required input amount falls onto the first material baffle 8, the first material baffle 8 moves to the outside of the feed hopper 1, and the high polymer material on the first material baffle 8 can fall onto the second material baffle 9; after macromolecular material on first striker plate 8 falls into second striker plate 9, first striker plate 8 removes again to feeder hopper 1 in, and second striker plate 9 removes to the outside of feeder hopper 1, macromolecular material on second striker plate 9 can fall into feeder hopper 1 like this to the completion has been thrown the material to feeder hopper 1. By last can, throwing the in-process of material to feeder hopper 1, be provided with an at least striker plate in the feeder hopper 1 all the time, consequently, the liquid nitrogen in the feeder hopper 1 can receive blockking of striker plate, and the liquid nitrogen can't volatilize to the external world from the upper portion of feeder hopper 1 to the extravagant problem of liquid nitrogen has been improved. After the feeding is finished, the first material baffle plate 8 and the second material baffle plate 9 are positioned in the feeding hopper 1 again to wait for the next feeding operation to start.
As shown in fig. 1, further, the driving mechanism 10 may be an air cylinder, and includes a cylinder body 101 and a piston rod 102 movably connected to the inside of the cylinder body 101; the piston rod 102 is connected with the first material baffle 8 or the second material baffle 9, and the piston rod 102 is horizontally arranged to ensure that the two material baffles are always in a horizontal state in the moving process, so that the material baffles can smoothly enter and exit the feed hopper 1, and a guarantee is provided for the normal operation of feeding operation.
As shown in fig. 1, further, the second striker plate 9 is disposed below the first striker plate 8; the liquid nitrogen storage tank 5 is connected with a first liquid nitrogen conveying pipe 11 and a second liquid nitrogen conveying pipe 12; the first liquid nitrogen delivery pipe 11 is connected with the pulverizer 2 to supply liquid nitrogen to the pulverizer 2; the second liquid nitrogen conveying pipe 12 is connected with the feed hopper 1 to ensure that the high polymer material in the feed hopper 1 can be fully precooled; second striker plate 9 is located the top of second liquid nitrogen conveyer pipe 12 and feeder hopper 1 junction to ensure that first striker plate 8 removes the outside to feeder hopper 1, and macromolecular material falls into the in-process on the second striker plate 9, and the liquid nitrogen can not outwards volatilize from feeder hopper 1.
As shown in fig. 1, in order to avoid the powder with small particle size, light weight and difficult to use, from performing the redundant pulverization process, in some embodiments, the liquid nitrogen grinding apparatus further comprises a second cyclone 13; the second cyclone separator 13 is used as a main cyclone separator and connected with the first cyclone separator 4, the second cyclone separator 13 is connected with the induced draft fan 3, powder meeting the use requirement can be preferentially discharged through the second cyclone separator 13, the powder with smaller particle size and lighter weight enters the first cyclone separator 4 along with liquid nitrogen under the action of the induced draft fan 3, and the powder with smaller particle size and lighter weight is collected from the bottom of the first cyclone separator 4 after gas-solid separation.
As shown in fig. 1, further, a discharge pipe is connected to the bottom of the second cyclone 13; and a first discharging control valve 14 is arranged on the discharging pipe. A discharge port of the material bag for collecting powder can be fixedly sleeved on the discharging pipe; when the material quantity in the material bag reaches the bagging requirement, the first discharge control valve 14 can be closed, so that the condition that liquid nitrogen overflows from the discharge pipe can not occur when other material bags are replaced, and the waste of the liquid nitrogen is reduced.
As shown in fig. 2, further, the liquid nitrogen milling device further includes a first material lifting machine 15 and a storage hopper 17; the storage hopper 17 is arranged on the ground, and the high polymer materials to be crushed can be stored in the storage hopper 17; the first material lifting machine 15 is used for conveying the raw materials in the storage hopper 17 to the feeding hopper 1 (on the first material baffle 8), so that the materials do not need to be carried and fed manually, and the labor intensity of production personnel is reduced.
As shown in fig. 2, further, a discharge pipe 18 is arranged at the bottom of the storage hopper 17; a second discharge control valve 19 is arranged on the discharge pipe 18; the second discharge control valve 19 is electrically connected with a controller; the driving mechanism 10 is electrically connected to the controller. The controller can be used for controlling the opening and closing of the second discharging control valve 19, so that the feeding amount of single feeding can be controlled in the production process; in addition, can also control actuating mechanism 10 through the controller, make things convenient for the macromolecular material to open after carrying on first striker plate 8 and throw the material operation.
To sum up, the utility model provides a liquid nitrogen milling equipment through set up two mobilizable striker plates of high difference in the feeder hopper, at the in-process of throwing the material to the feeder hopper, has the striker plate in the feeder hopper all the time, and liquid nitrogen in the hopper can receive blockking of striker plate, therefore, at the in-process of throwing the material to the feeder hopper, the liquid nitrogen can't volatilize to the external world from the upper portion of feeder hopper to the extravagant problem of liquid nitrogen has been improved.
It should be understood that equivalent alterations and modifications can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such alterations and modifications should fall within the scope of the appended claims.
Claims (7)
1. A liquid nitrogen grinding device comprises a feed hopper, a grinder connected with the feed hopper, an induced draft fan connected with the grinder, a first cyclone separator connected with the induced draft fan, and a liquid nitrogen storage tank connected with the induced draft fan; the top of the first cyclone separator is connected with a liquid nitrogen recovery pipe; the other end of the liquid nitrogen recovery pipe is communicated with the feed hopper; the device is characterized by also comprising a feeding platform; the feeding hopper is clamped on the feeding platform, and a first material baffle plate and a second material baffle plate are horizontally and movably arranged in the feeding hopper; two driving mechanisms are arranged on the feeding platform; and output shafts of the two driving mechanisms are in transmission connection with the first material baffle plate and the second material baffle plate respectively.
2. The liquid nitrogen grinding device according to claim 1, wherein the driving mechanism comprises a cylinder and a piston rod movably connected with the interior of the cylinder; the piston rod is horizontally arranged and connected with the first material baffle plate or the second material baffle plate.
3. The liquid nitrogen grinding device according to claim 1, wherein the second striker plate is arranged below the first striker plate; the liquid nitrogen storage tank is connected with a first liquid nitrogen conveying pipe and a second liquid nitrogen conveying pipe; the first liquid nitrogen conveying pipe is connected with the pulverizer; the second liquid nitrogen conveying pipe is connected with the feed hopper; and the second material baffle plate is positioned above the joint of the second liquid nitrogen conveying pipe and the feed hopper.
4. The liquid nitrogen milling apparatus as claimed in claim 1, further comprising a second cyclone; the second cyclone separator is connected with the first cyclone separator, and the second cyclone separator is connected with the induced draft fan.
5. The liquid nitrogen grinding device as claimed in claim 4, wherein a discharge pipe is connected to the bottom of the second cyclone separator; and a first discharging control valve is arranged on the discharging pipe.
6. The liquid nitrogen milling apparatus as claimed in claim 1, further comprising a first material lifting machine and a storage hopper; the storage hopper is arranged on the ground; the first material lifting machine is used for conveying raw materials in the storage hopper into the feed hopper.
7. The liquid nitrogen grinding device according to claim 6, wherein a discharge pipe is arranged at the bottom of the storage hopper; a second discharging control valve is arranged on the discharging pipe; the second discharge control valve is electrically connected with a controller; the driving mechanism is electrically connected with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221658062.8U CN217796550U (en) | 2022-06-29 | 2022-06-29 | Liquid nitrogen grinding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221658062.8U CN217796550U (en) | 2022-06-29 | 2022-06-29 | Liquid nitrogen grinding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217796550U true CN217796550U (en) | 2022-11-15 |
Family
ID=83960116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221658062.8U Active CN217796550U (en) | 2022-06-29 | 2022-06-29 | Liquid nitrogen grinding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217796550U (en) |
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2022
- 2022-06-29 CN CN202221658062.8U patent/CN217796550U/en active Active
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