CN215234841U - Freeze-drying type sand making device - Google Patents
Freeze-drying type sand making device Download PDFInfo
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- CN215234841U CN215234841U CN202120565964.6U CN202120565964U CN215234841U CN 215234841 U CN215234841 U CN 215234841U CN 202120565964 U CN202120565964 U CN 202120565964U CN 215234841 U CN215234841 U CN 215234841U
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Abstract
The utility model discloses a freeze-drying formula system sand device, include: a sand making machine; a feeding screw machine is arranged above the sand making machine and provided with a liquid nitrogen inlet, and a discharge port of the feeding screw machine is connected with a feed port of the sand making machine; a discharging screw machine is arranged at the bottom of the sand making machine and is communicated with the sand making machine for discharging, and a discharging port is formed in the discharging screw machine; the feeding screw machine is provided with a transition hopper, a feeding belt machine is arranged above the transition hopper, and the feeding belt machine feeds raw material stones into the transition hopper; when the raw material stone is mixed with liquid nitrogen, the chemical bonds inside the raw material stone are broken due to the low temperature, and the breaking energy becomes very small. Then impact crushing the freeze-dried raw material stones; meanwhile, the low-temperature nitrogen used for cooling the stones to be crushed is not discharged outside, and is continuously recycled in the sand making system to prepare the liquid nitrogen, so that the energy consumption for preparing the liquid nitrogen is greatly reduced.
Description
Technical Field
The utility model belongs to system sand equipment field especially relates to a freeze-drying formula system sand device.
Background
The sand making machine is core equipment in the sandstone crushing industry, and the crushers manufactured by two principles, namely a crusher manufactured by utilizing a kinetic energy crushing principle and a crusher manufactured by utilizing a pressure crushing principle, are commonly used in the market at present. The sand making machine utilizing the kinetic energy crushing principle comprises a vertical shaft impact crusher, a horizontal shaft impact crusher, a hammer crusher and the like. The crushers manufactured by using the pressure crushing principle mainly include a jaw crusher, a wheel mill crusher, a double-roll crusher, an extrusion crusher and the like. The sand making machine manufactured by utilizing the kinetic energy crushing principle is mainly used for producing sand and rice stones with small particle diameters, and the sand making machine manufactured by utilizing the pressure crushing principle is mainly used for producing stones and stones with large particle diameters. At present, stones, rice stones and sand with the diameter of less than 30mm are mainly used in the concrete industry, and medium-fine sand with the particle diameter of less than 4.75mm is mainly used in the dry powder mortar industry.
The selection and the selection of the sand making machine determine the size of the sand with the particle diameter, and the sand making machine plays a decisive role in the yield and the quality of a sand crushing production line. In the whole sand making production line, the energy consumption of the sand making machine is very high, and the installed capacity of the sand making machine usually accounts for 50% -60% of the total installed capacity of the whole production line, so that the energy conservation of the whole sand making machine production line has a great relationship with the selection of the sand making machine. However, the sand making machine manufactured by any principle form is developed in practical application, the improvement possibility is low, and the installed power is difficult to reduce, so that the installed power of the whole sand making production line is difficult to reduce, and the energy conservation is difficult.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art, the utility model aims to provide a freeze-drying type system sand device will treat that the raw materials stone mixes with liquid nitrogen mutually, treats that the inside chemical bond of raw materials stone will be because of low temperature and fracture, and its breakage can also become very little. Then impact crushing the freeze-dried raw material stones; meanwhile, the low-temperature nitrogen used for cooling the stones to be crushed is not discharged outside, and is continuously recycled in the sand making system to prepare the liquid nitrogen, so that the energy consumption for preparing the liquid nitrogen is greatly reduced.
The utility model provides a following technical scheme:
a freeze-dried sand making device comprising: a sand making machine; a feeding screw machine is arranged above the sand making machine and provided with a liquid nitrogen inlet, and a discharge port of the feeding screw machine is connected with a feed port of the sand making machine; a discharging screw machine is arranged at the bottom of the sand making machine and is communicated with the sand making machine for discharging, and a discharging port is formed in the discharging screw machine; the feeding screw machine is provided with a transition hopper, a feeding belt machine is arranged above the transition hopper, and the feeding belt machine sends raw material stones into the transition hopper.
Preferably, the sand making machine comprises a machine shell, a rotary table is arranged in the machine shell and close to the feed inlet, a through hole is formed in the center of the upper side of the rotary table, and raw material stones penetrate through the through hole and are scattered from the periphery of the rotary table; a plurality of through grooves are formed in the side surface of the rotary table; the inside material bed course that is equipped with of casing, the logical groove of material bed course and carousel corresponds each other.
Preferably, the bottom of the turntable is connected with a bearing body, the other end of the bearing body is connected with a transmission belt, and the transmission belt drives the bearing body to rotate; and the other side of the transmission belt is connected with a driving motor.
Preferably, the bearing bodies are driven simultaneously by two drive motors.
Preferably, the freeze-drying type sand making device adopts a cryogenic nitrogen recovery system, and comprises a cyclone separator and a sand making machine, wherein a nitrogen outlet is formed in the upper part of a shell of the sand making machine, and the nitrogen outlet is connected with an air inlet of the cyclone separator through pipeline connection; the top of the cyclone separator is provided with an air outlet, and the bottom of the cyclone separator is provided with a feed opening; and an air outlet of the cyclone separator is connected with a dust filter.
Preferably, the gas outlet of the dust filter is connected with a liquid nitrogen generator, and the liquid nitrogen generator is provided with a liquid nitrogen outlet.
Preferably, the liquid nitrogen outlet is communicated with a liquid nitrogen inlet of the feeding screw machine through a pipeline.
Preferably, the raw material stone blocks enter the transition hopper through the feeding belt conveyor, a feeding screw machine is installed below the transition hopper, and the raw material stone blocks are pushed forwards in the feeding screw machine; a liquid nitrogen inlet is arranged in the middle of a feeding screw machine, liquid nitrogen enters the feeding screw machine from the liquid nitrogen inlet, is mixed with advancing raw material stones and is pushed to advance together with the advancing raw material stones, the raw material stones are cooled by the liquid nitrogen in the advancing process, the stones to be crushed become deep-cooled freeze-dried stones with extremely low temperature, the internal molecular bonds of the stones are broken due to low temperature, the compression resistance of the freeze-dried stones is rapidly weakened, the freeze-dried stones are very fragile and fragile, the crushing energy of the freeze-dried stones is also very small, and then the freeze-dried stones enter a vertical shaft impact type sand making machine through a discharge port of the feeding screw machine and are crushed into machine-made sand by the vertical shaft impact type sand making machine with relatively low rotation speed and relatively small impact kinetic energy. Because the internal molecular bond of the freeze-dried stone is broken, the freeze-dried stone is very easy to break into smaller gravels, the breaking ratio of the gravels is greatly improved, and simultaneously, the content of finished products with small particle size in the machine-made finished product sand is greatly improved, thereby ensuring the reasonable gradation of the machine-made finished product sand. Meanwhile, because the crushing energy is very small, the energy consumed by crushing is much smaller than that of a conventional vertical shaft impact crusher.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the utility model relates to a freeze-drying formula system sand device will treat that the raw materials stone mixes with liquid nitrogen mutually, treats that the inside chemical bond of raw materials stone will be because of low temperature and fracture, and its breakage can also become very little, then strikes breakage with these freeze-drying raw materials stone again.
(2) The utility model relates to a freeze-drying type sand making device for the low temperature nitrogen gas after the broken stone is treated in the cooling is not arranged outward, does not incessantly circulate in the sand making system and is used for preparing liquid nitrogen, has greatly reduced the energy consumption who prepares liquid nitrogen like this.
(3) The utility model relates to a freeze-drying type sand making device, which ensures that the novel sand making machine can adapt to the premise of various materials, so that the broken finished sand has the minimum breaking energy and the optimal grade ratio; the requirements of energy conservation and emission reduction are met, the energy consumption is low, the production cost is reduced, and the profit is increased.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is the structural schematic diagram of the sand making machine of the present invention.
Fig. 3 is a schematic view of the turntable structure of the present invention.
Fig. 4 is a schematic structural view of the feeding screw machine of the present invention.
Fig. 5 is a schematic structural diagram of the cyclone separator of the present invention.
In the figure: 1. a raw material stone block; 2. a feeding belt conveyor; 3. a transition hopper; 4. a feeding screw machine; 5. a sand making machine; 6. a discharge screw machine; 7. a cyclone separator; 8. a dust filter; 9. a liquid nitrogen generator; 10. a discharge port; 11. a liquid nitrogen outlet; 41. A liquid nitrogen inlet; 51. a housing; 52. a nitrogen outlet; 53. a turntable; 531. a through hole; 532. a through groove; 54. a bearing body; 55. a material cushion layer; 56. a drive belt; 57. a drive motor; 71. an air inlet; 72. an air outlet; 73. and (4) a feed opening.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention will be combined to clearly and completely describe the technical solutions of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example one
As shown in fig. 1 and 4, a freeze-drying type sand making device includes: a sand making machine 5; a feeding screw machine 4 is arranged above the sand making machine 5, the feeding screw machine 4 is provided with a liquid nitrogen inlet 41, and a discharge port of the feeding screw machine 4 is connected with a feed port of the sand making machine 5; a discharging screw machine 6 is arranged at the bottom of the sand making machine 5, the discharging screw machine 6 is communicated with the sand making machine 5 for discharging, and a discharging hole 10 is formed in the discharging screw machine 6; the feeding screw machine 4 is provided with a transition hopper 3, a feeding belt machine 2 is arranged above the transition hopper 3, and the feeding belt machine 2 sends the raw material stone blocks 1 into the transition hopper 3.
The sand making machine 5 comprises a machine shell 51, a turntable 53 is arranged in the machine shell 51 at a position close to a feed inlet, a through hole 531 is formed in the center of the upper side of the turntable 53, and the raw material stone blocks 1 pass through the through hole 531 and are scattered from the periphery of the turntable 53; a plurality of through grooves 532 are formed in the side surface of the turntable 53; a material cushion layer 55 is arranged inside the machine shell 51, and the material cushion layer 55 corresponds to the through groove 532 of the rotating disc 53.
The bottom of the turntable 53 is connected with a bearing body 54, the other end of the bearing body 54 is connected with a transmission belt 56, and the transmission belt 56 drives the bearing body 54 to rotate; the other side of the transmission belt 56 is connected with a driving motor 57; the bearing bodies 54 are driven simultaneously by two drive motors 57.
The raw material stone block 1 enters a transition hopper 3 through a feeding belt conveyor 2, a feeding screw machine 4 is installed below the transition hopper 3, and the raw material stone block 1 is pushed forwards in the feeding screw machine 4; a liquid nitrogen inlet 41 is arranged in the middle of a feeding screw machine 4, liquid nitrogen enters the feeding screw machine 4 from the liquid nitrogen inlet 41, is mixed with the advancing raw material stone 1 and is pushed to advance, the raw material stone 1 is cooled by the liquid nitrogen in the advancing process, the stones to be crushed become deep-cooled freeze-dried stones with extremely low temperature, internal molecular bonds of the stones are broken due to low temperature, the compression resistance of the freeze-dried stones is sharply weakened, the freeze-dried stones are very fragile and fragile, the crushing energy of the freeze-dried stones is very small, and the freeze-dried stones enter a vertical shaft impact type sand making machine 5 with low rotating speed and small impact kinetic energy through a discharge port of the feeding screw machine 4 to be crushed into machine-made sand. Because the internal molecular bond of the freeze-dried stone is broken, the freeze-dried stone is very easy to break into smaller gravels, the breaking ratio of the gravels is greatly improved, and simultaneously, the content of finished products with small particle size in the machine-made finished product sand is greatly improved, thereby ensuring the reasonable gradation of the machine-made finished product sand. Meanwhile, because the crushing energy is very small, the energy consumed by crushing is much smaller than that of a conventional vertical shaft impact crusher.
Example two
As shown in fig. 2, 3 and 5, on the basis of the first embodiment, the freeze-drying type sand making device adopts a cryogenic nitrogen recovery system, and comprises a cyclone separator 7 and a sand making machine 5, wherein a nitrogen outlet 52 is formed in the upper part of a casing 51 of the sand making machine 5, and the nitrogen outlet 52 is connected with an air inlet 71 of the cyclone separator 7 through pipeline connection; the top of the cyclone separator 7 is provided with an air outlet 72, and the bottom of the cyclone separator 7 is provided with a feed opening 73; an air outlet 72 of the cyclone separator 7 is connected with a dust filter.
The gas outlet of the dust filter 8 is connected with a liquid nitrogen generator 9, and the liquid nitrogen generator 9 is provided with a liquid nitrogen outlet 11; the liquid nitrogen outlet 11 is communicated with a liquid nitrogen inlet 41 of the feeding screw machine 4 through a pipeline.
The nitrogen which absorbs energy and is evaporated in the crushing process in the sand making machine 5 enters a cyclone separator 7 through an air outlet on the shell of the sand making machine 5, dust and nitrogen are separated, the separated fine sand and stone powder are discharged from a discharge hole of the cyclone separator 7, the separated nitrogen enters a dust filter 8 to further carry out secondary separation on the dust and the nitrogen, the clean nitrogen enters a liquid nitrogen generator to be prepared into liquid nitrogen again, the prepared liquid nitrogen enters a feeding screw machine 4 again through a pipeline to cool the raw material stone block 1 again, which is equivalent to that the low-temperature nitrogen is not discharged outside, the sand making system is continuously circulated and reciprocated, and the circulation process from the low-temperature nitrogen to the liquid nitrogen, then to the low-temperature nitrogen and then to the liquid nitrogen is continuously carried out, so that the energy consumption for preparing the liquid nitrogen is greatly reduced.
The device obtained by the technical scheme is a freeze-drying type sand making device, the raw material stone blocks to be mixed with liquid nitrogen, chemical bonds in the raw material stone blocks to be broken due to low temperature, the breaking energy of the chemical bonds is also very small, and then the freeze-drying raw material stone blocks are subjected to impact breaking; the low-temperature nitrogen used for cooling the stones to be crushed is not discharged outside, and is continuously recycled in the sand making system to prepare liquid nitrogen, so that the energy consumption for preparing the liquid nitrogen is greatly reduced; on the premise of ensuring that the novel sand making machine can adapt to various materials, the crushed finished sand has the minimum crushing energy and the optimal grade proportion; the requirements of energy conservation and emission reduction are met, the energy consumption is low, the production cost is reduced, and the profit is increased.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art; 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 (7)
1. A freeze-dried sand making device comprising: a sand making machine (5); the device is characterized in that a feeding screw machine (4) is arranged above the sand making machine (5), the feeding screw machine (4) is provided with a liquid nitrogen inlet (41), and a discharge port of the feeding screw machine (4) is connected with a feed port of the sand making machine (5); a discharging screw machine (6) is arranged at the bottom of the sand making machine (5), the discharging screw machine (6) is communicated with the sand making machine (5) for discharging, and a discharging hole (10) is formed in the discharging screw machine (6); the feeding screw machine (4) is provided with a transition hopper (3), a feeding belt machine (2) is arranged above the transition hopper (3), and the feeding belt machine (2) sends the raw material stone blocks (1) into the transition hopper (3).
2. The freeze-drying type sand making device according to claim 1, wherein the sand making machine (5) comprises a casing (51), a rotating disc (53) is arranged in the casing (51) at a position close to the feeding hole, a through hole (531) is formed in the center of the upper side of the rotating disc (53), and the raw material stone block (1) is scattered from the periphery of the rotating disc (53) through the through hole (531); a plurality of through grooves (532) are formed in the side surface of the rotating disc (53); a material cushion layer (55) is arranged in the machine shell (51), and the material cushion layer (55) corresponds to the through groove (532) of the rotary disc (53).
3. The freeze-drying type sand making device according to claim 2, wherein a bearing body (54) is connected to the bottom of the rotary table (53), a transmission belt (56) is connected to the other end of the bearing body (54), and the transmission belt (56) drives the bearing body (54) to rotate; the other side of the transmission belt (56) is connected with a driving motor (57).
4. A freeze-dried sand making device according to claim 3, wherein the bearing body (54) is driven simultaneously by two drive motors (57).
5. The freeze-drying type sand making device is characterized by comprising a cryogenic nitrogen recovery system, wherein the cryogenic nitrogen recovery system comprises a cyclone separator (7), the sand making machine (5) is provided with a nitrogen outlet (52) at the upper part of a casing (51) of the sand making machine (5), and the nitrogen outlet (52) is connected with an air inlet (71) of the cyclone separator (7) through a pipeline; an air outlet (72) is formed in the top of the cyclone separator (7), and a feed opening (73) is formed in the bottom of the cyclone separator (7); an air outlet (72) of the cyclone separator (7) is connected with a dust filter (8).
6. A freeze-dried sand making device according to claim 5, characterized in that the gas outlet of the dust filter (8) is connected with a liquid nitrogen generator (9), and the liquid nitrogen generator (9) is provided with a liquid nitrogen outlet (11).
7. A freeze-dried sand making device according to claim 6, wherein the liquid nitrogen outlet (11) is connected to the liquid nitrogen inlet (41) of the feeding screw (4) by a pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120565964.6U CN215234841U (en) | 2021-03-19 | 2021-03-19 | Freeze-drying type sand making device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120565964.6U CN215234841U (en) | 2021-03-19 | 2021-03-19 | Freeze-drying type sand making device |
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| Publication Number | Publication Date |
|---|---|
| CN215234841U true CN215234841U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120565964.6U Active CN215234841U (en) | 2021-03-19 | 2021-03-19 | Freeze-drying type sand making device |
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- 2021-03-19 CN CN202120565964.6U patent/CN215234841U/en active Active
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