Ultralow-temperature freezing crusher

Abstract

The utility model discloses an ultralow-temperature freezing crusher. An upper cover and a lower box are installed together in a sealed mode through the smashing box, the heat preservation lining is arranged on the inner side of the smashing box, the arc-shaped sieve plate is arranged in the smashing box and divides the smashing box into an upper side smashing cavity and a lower side separating cavity, and the material pre-freezing bin is arranged at the lower end of the material bin. The spiral feeding mechanism is communicated with the material pre-freezing bin and extends into the crushing cavity on the upper side in the horizontal direction; the rotating shaft and the arc-shaped sieve plate are concentrically arranged; a plurality of refrigerating fluid channels communicated with the crushing cavity are formed in the rotating shaft; and the liquid nitrogen supply mechanism is respectively communicated with the material pre-freezing bin and the refrigerating fluid channel through a connecting pipeline. According to the ultralow-temperature freezing crusher disclosed by the utility model, heat exchange with the outside is reduced due to the heat preservation lining on the inner side of the crushing box, so that liquid nitrogen is saved to a certain extent, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of super low temperature pulverization, especially to a super low temperature frozen pulverizer. BACKGROUND

[0002] With the continuous development of modern medicine, food, chemical industry, people's demand for material refinement is higher and higher. However, the temperature of the material rises when it is pulverized by ordinary machinery, which can easily cause the quality and composition of the material to decrease. Spices, meat, Chinese herbal medicine, chocolate and other materials are prone to stick together, block and change in quality when pulverized at room temperature, and the pulverization effect and efficiency are poor. Ordinary pulverization methods cannot meet the production needs of the new era.

[0003] The super low temperature frozen pulverizer mainly uses liquid nitrogen as a cold source to cool the material to be pulverized at low temperature, so as to achieve the embrittlement of the material to be pulverized, so that it can be quickly pulverized subsequently, and then screened by a cyclone separator, and finally obtained by a discharge assembly. As can be seen, the super low temperature frozen pulverizer not only has good pulverization effect and high pulverization efficiency, but also well maintains the original chemical properties of the material, and is especially suitable for the application of some high-hardness Chinese herbal medicines.

[0004] In actual application, the super low temperature frozen pulverizer has insufficient heat preservation and exchanges heat with the outside world, resulting in waste of liquid nitrogen resources and increasing processing cost. Especially, a lot of heat is generated during the feeding process through the spiral feeding mechanism and the pulverization process of the pulverization assembly, which can seriously affect the pulverization effect and efficiency if the material cannot be frozen and cooled in time. SUMMARY

[0005] Therefore, the utility model provides a super low temperature frozen pulverizer which has the effects of good pulverization effect, high pulverization efficiency, saving of liquid nitrogen resources and reduction of processing cost.

[0006] The utility model solves the above -mentioned problems through the following technical scheme:

[0007] The utility model discloses a super low temperature frozen pulverizer, which comprises a pulverization box for sealingly installing an upper cover and a lower box together, a heat preservation lining arranged on the inner side of the pulverization box, an arc-shaped sieve plate arranged in the pulverization box and dividing the pulverization box into an upper crushing cavity and a lower separation cavity, a material bin, a material pre-freezing bin arranged at the lower end of the material bin, a spiral feeding mechanism communicated with the material pre-freezing bin and extending into the upper crushing cavity in the horizontal direction, a rotating shaft concentrically arranged with the arc-shaped sieve plate and having a plurality of frozen liquid channels communicated with the crushing cavity, a liquid nitrogen supply mechanism communicated with the material pre-freezing bin and the frozen liquid channels through a connecting pipeline, a pulverization assembly arranged on the rotating shaft and interacting with the arc-shaped sieve plate to pulverize the material, and a discharge valve connected to the discharge port at the bottom of the pulverization box.

[0008] As a further improvement of the above technical solution, the bottom of the screw feeding mechanism is uniformly provided with a plurality of feeding ports, and each feeding port is provided with a pressure feeding valve.

[0009] Preferably, the pressure relief port of the crushing box is provided with a filter assembly, and a pressure relief valve is installed.

[0010] Preferably, the material pre-freezing bin and the liquid nitrogen nozzle of the liquid nitrogen outlet of the liquid nitrogen channel are both atomizing nozzles.

[0011] Preferably, the bottom of the crushing box is provided with a supporting leg.

[0012] As a further improvement of the above technical solution, the inside of the crushing box is provided with a temperature sensor, and the temperature sensor is connected with the liquid feeding controller of the liquid nitrogen supply mechanism.

[0013] As a further improvement of the above technical solution, the top end of the material pre-freezing bin is provided with a material level sensor, and the material level sensor is connected with the liquid feeding controller of the liquid nitrogen supply mechanism.

[0014] As a further improvement of the above technical solution, the discharge end of the discharge valve is connected with a detachable hose made of heat insulation material.

[0015] From the above technical solution, the present application has the following beneficial effects:

[0016] The ultralow-temperature frozen crushing machine has the following advantages: the heat exchange with the outside is reduced by the heat preservation lining on the inside of the crushing box, thereby saving the liquid nitrogen to a certain extent and reducing the cost; the crushing box is divided into an upper crushing cavity and a lower separation cavity by the arc-shaped sieve plate, the gap between the crushing assembly rotating with the rotating shaft and the arc-shaped sieve plate is fixed, and the material crushing efficiency is improved; a plurality of refrigerant channels are arranged in the rotating shaft and communicated with the crushing cavities, liquid nitrogen is sprayed from the center to the outside, thereby uniformly freezing the materials in the crushing box, the crushing effect is improved, the use effect of the liquid nitrogen is improved, and the liquid nitrogen is saved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 Fig. 1 is a structural schematic view of the ultralow-temperature frozen crushing machine of the present application;

[0018] Figure 2 Fig. 4 is a principle block diagram of the liquid feeding control system of the liquid nitrogen supply mechanism of the ultralow-temperature frozen crushing machine of the present application.

[0019] As Figure 1, pulverizing box-1, crushing cavity-11, separation cavity-12, heat preservation lining-13, arc sieve plate-14, rotating shaft 115, frozen liquid channel-16, pulverizing assembly-17, bin-2, material pre-freezing bin-3, screw feeding mechanism-4, connecting pipeline-5, liquid nitrogen supply mechanism-6, discharge valve-7, supporting leg-8, hose-9. DETAILED DESCRIPTION

[0020] In the description of the present application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0021] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "multiple" is two or more.

[0022] The present application will be described in detail below with reference to the accompanying drawings, as shown in Figure 1 The super-low temperature frozen pulverizer described in the present embodiment includes a pulverizing box 1 sealingly installed together with an upper cover and a lower box, a heat preservation lining 13 arranged on the inner side of the pulverizing box 1, an arc sieve plate 14 arranged inside the pulverizing box 1 and dividing the pulverizing box 1 into an upper side crushing cavity 11 and a lower side separation cavity 12, a bin 2, a material pre-freezing bin 3 arranged at the lower end of the bin 2, a screw feeding mechanism 4 communicated with the material pre-freezing bin 3 and extending into the upper side crushing cavity 11 in the horizontal direction, a rotating shaft 15 arranged concentrically with the arc sieve plate 14 and having a plurality of frozen liquid channels 16 communicated with the crushing cavity 11 arranged inside, a liquid nitrogen supply mechanism 6 communicated to the material pre-freezing bin 3 and the frozen liquid channel 16 through a connecting pipeline 5, a pulverizing assembly 17 arranged on the rotating shaft 15 and interacting with the arc sieve plate 14 to pulverize the material, and a discharge valve 7 connected to the discharge port at the bottom of the pulverizing box 1.

[0023] The cryogenic freezer pulverizer of the embodiment has the heat preservation lining 13 inside the pulverizing box 1, which reduces heat exchange with the outside world, thereby saving liquid nitrogen to a certain extent and reducing cost; the pulverizing box 1 is divided into the upper crushing cavity 11 and the lower separation cavity 12 by the arc-shaped sieve plate 14, the gap between the pulverizing assembly 17 rotating with the rotating shaft 15 and the arc-shaped sieve plate 14 is fixed, which facilitates improving the material pulverizing efficiency; and a plurality of cryogenic liquid channels 16 communicating with the crushing cavity 11 are formed in the rotating shaft 15, which can spray liquid nitrogen from the center to the outside, thereby uniformly freezing the materials in each part of the pulverizing box 1, improving the pulverizing effect and the use effect of liquid nitrogen, and saving liquid nitrogen.

[0024] As an improved embodiment of the embodiment, as shown in Figure 1 The bottom of the screw feeding mechanism 4 is uniformly provided with a plurality of feeding ports, and each feeding port is provided with a pressure feeding valve. During the forward pushing process of the screw feeding mechanism 4, more and more materials press the feeding ports, and when the pressure feeding valve of the feeding port is opened under a preset pressure, the internal materials fall into the crushing cavity 11 from different positions, thereby improving the pulverizing efficiency of the pulverizing assembly 17.

[0025] As a preferred embodiment of the embodiment, as shown in Figure 1 The pulverizing box 1 is provided with a filter assembly at the pressure relief port and is installed with a pressure relief valve, which ensures the safe pressure in the pulverizing box 1 and improves the safety of the pulverizer. The filter assembly avoids the pollution of the environment by the tiny materials in the pulverizing box 1 from the pressure relief port.

[0026] As a preferred embodiment of the embodiment, the liquid nitrogen nozzle of the liquid nitrogen outlet of the cryogenic liquid channel 16 and the material pre-freezing bin 3 are both atomizing nozzles.

[0027] As a preferred embodiment of the embodiment, the bottom of the pulverizing box 1 is provided with a support leg 8.

[0028] As an improved embodiment of the embodiment, the inside of the pulverizing box 1 is provided with a temperature sensor, and the temperature sensor is connected with a liquid feeding controller of the liquid nitrogen supply mechanism 6. The principle block diagram is as shown in Figure 2 The temperature sensor transmits the temperature signal detected in the pulverizing box 1 to the liquid feeding controller. After analysis and judgment by the liquid feeding controller, the first control valve on the cryogenic liquid channel 16 is sent an instruction to open or close, thereby reasonably cooling the materials in the pulverizing box 1 and realizing automatic control and saving manpower.

[0029] As an improved embodiment of the present embodiment, the top end of the material pre-freezing bin 3 is provided with a material level sensor connected with a liquid feeding controller of the liquid nitrogen feeding mechanism 6, a principle block diagram of which is shown in Figure 2 The material level sensor transmits a detected material level signal to the liquid feeding controller, which analyzes and judges the signal, and when the signal is lower than a predetermined value, the liquid feeding controller sends a closing instruction to a second control valve on the pipeline of the material pre-freezing bin 3 to stop spraying liquid nitrogen on the material pre-freezing bin 3, realizing automatic control and saving manpower.

[0030] As an improved embodiment of the present embodiment, the discharge end of the discharge valve 7 is connected with a detachable hose 9 made of heat insulation material, which can be used as a discharge extension pipe to be connected to a split storage tank, making the discharge and transfer more simple and convenient.

[0031] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. An ultra-low temperature cryogenic grinder, comprising a grinding box sealingly assembled together by an upper cover and a lower box, an arc-shaped screen plate arranged inside the grinding box and separating the grinding box into an upper side crushing cavity and a lower side separating cavity, a material bin, a material pre-freezing bin arranged at a lower end of the material bin, a screw feeding mechanism communicating with the material pre-freezing bin and extending into the upper side crushing cavity in a horizontal direction, a rotating shaft arranged concentrically with the arc-shaped screen plate, a liquid nitrogen supply mechanism, a grinding assembly arranged on the rotating shaft and interacting with the arc-shaped screen plate to grind the material, and a discharge valve connected to a discharge port at a bottom of the grinding box, characterized in that: The device further comprises a heat-insulating lining arranged inside the pulverizing box, a plurality of frozen liquid channels arranged inside the rotating shaft and connected to the crushing cavity, and the liquid nitrogen supply mechanism is connected to the material pre-freezing bin and the frozen liquid channels through connecting pipelines.

2. A cryogenic freezer mill according to claim 1, wherein: The bottom of the screw feeding mechanism is uniformly provided with a plurality of feeding ports, and each feeding port is provided with a pressure feeding valve.

3. The ultra-low temperature freezer mill of claim 1, wherein: The pulverizing box is provided with a filter assembly at the pressure relief port and is installed with a pressure relief valve.

4. The ultra-low temperature freezer mill of claim 1, wherein: The liquid nitrogen nozzles of the liquid nitrogen outlets of the material pre-freezing bin and the frozen liquid channels are atomizing nozzles.

5. The ultra-low temperature freezer mill of claim 1, wherein: The bottom of the pulverizing box is provided with supporting legs.

6. The ultra-low temperature freezer mill of claim 1, wherein: The inside of the pulverizing box is provided with a temperature sensor connected to a liquid feeding controller of the liquid nitrogen supply mechanism.

7. The ultra-low temperature freezer mill of claim 1, wherein: The top end of the material pre-freezing bin is provided with a material level sensor connected to the liquid feeding controller of the liquid nitrogen supply mechanism.

8. The ultra-low temperature freezer mill of claim 1, wherein: The discharge end of the discharge valve is connected with a detachable hose made of heat-insulating material.

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