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CN-224221447-U - Dry ice particle grinding machine

CN224221447UCN 224221447 UCN224221447 UCN 224221447UCN-224221447-U

Abstract

The utility model provides a dry ice particle grinding machine which comprises a grinding mechanism, a transmission mechanism and a gap adjusting module, wherein the grinding mechanism comprises a base provided with a grinding cavity and a pair of parallel grinding discs, the upper end face of the base is provided with an opening communicated with the grinding cavity, the grinding discs are arranged in the grinding cavity through the opening, dry ice is ground between the pair of grinding discs, the pair of grinding discs are divided into a rotary cutter disc and a fixed cutter disc, a gap is formed between the rotary cutter disc and the fixed cutter disc, the gap forms a grinding gap, the transmission mechanism is used for driving the rotary cutter disc to rotate, the gap adjusting module is arranged above the base and comprises a dry ice guide channel, dry ice particles fall into the grinding cavity from the dry ice guide channel and enter the grinding gap to be ground into dry ice powder, and the gap adjusting module is used for driving the fixed cutter disc to move in a direction towards or away from the rotary cutter disc so as to adjust the size of the grinding gap.

Inventors

  • Shi Tongying
  • LIN QI

Assignees

  • 厦门和丰利干冰除污设备有限公司

Dates

Publication Date
20260512
Application Date
20250528

Claims (10)

  1. 1. The dry ice particle grinding machine is characterized by comprising a grinding mechanism, a transmission mechanism and a gap adjusting module, wherein the grinding mechanism comprises a base provided with a grinding cavity and a pair of parallel grinding discs, the upper end surface of the base is provided with an opening communicated with the grinding cavity, and the grinding discs are arranged in the grinding cavity through the opening; The dry ice is ground between the pair of grinding discs, wherein the pair of grinding discs are divided into a rotary cutter disc and a fixed cutter disc, a gap exists between the rotary cutter disc and the fixed cutter disc, and the gap forms a grinding gap; The clearance adjustment module is arranged above the base and comprises a dry ice guide-in channel, wherein the dry ice guide-in channel is communicated with the grinding cavity, dry ice particles fall into the grinding cavity from the dry ice guide-in channel and enter the grinding gap to be ground into dry ice powder; The clearance adjustment module is used for driving the fixed cutter disc to move along the direction facing to or far away from the rotary cutter disc, the rotary cutter disc is axially fixed relative to the fixed cutter disc, and the size of the grinding clearance is adjusted through the clearance adjustment module.
  2. 2. A dry ice particle mill as claimed in claim 1, wherein a rotary cutter holder is arranged in the milling cavity, and the rotary cutter head is arranged on the rotary cutter holder; The transmission mechanism comprises a motor and a rotating shaft, the rotating shaft is arranged below the rotating tool apron and connected with the rotating tool apron, the motor is arranged below the base, an output shaft of the motor is connected with the rotating shaft, and the motor drives the rotating tool apron to rotate through the rotating shaft so as to drive the rotating tool apron to rotate.
  3. 3. The dry ice particle grinding machine according to claim 2, wherein a first step surface and a second step surface are arranged in the grinding cavity in a radially protruding manner, an annular cushion block is arranged between the rotating shaft and the rotating tool apron, the rotating tool apron is in limit fit with the first step surface, and the annular cushion block is in limit fit with the second step surface; the annular cushion block is sleeved on the rotating shaft, and the rotating shaft is sleeved with a bearing below the annular cushion block; an annular sealing groove is formed in the end face, facing the bearing, of the annular cushion block, and an annular sealing ring is arranged in the annular sealing groove; the bearing adopts a deep groove ball bearing or an angular contact bearing lubricated at low temperature, and the sealing ring adopts a low-temperature-resistant sealing ring.
  4. 4. The dry ice particle mill according to claim 1, wherein the base is a double-layer heat-insulating base, the inner layer of the double-layer heat-insulating base is made of stainless steel or aluminum alloy material, and the outer layer of the double-layer heat-insulating base is made of heat-insulating material; The rotary cutterhead is made of titanium alloy material and is subjected to surface low-temperature hardening treatment, the hardness is more than or equal to HRC60, the fixed cutterhead is made of 316L stainless steel, and a diamond-like carbon film (DLC) is plated on the surface of the fixed cutterhead.
  5. 5. The dry ice particle grinding machine according to claim 1, wherein the side wall of the base is provided with at least one or two discharge ports, the discharge ports are communicated with the grinding cavity, the discharge ports are positioned below the grinding gap, and the ground dry ice powder is discharged from the discharge ports; The lower edge of the discharge hole is provided with a bevel edge, and the discharge hole is externally connected with a material guide channel or a detachable stop block is arranged at the discharge hole.
  6. 6. A dry ice particle mill according to claim 1, wherein the gap adjusting module comprises a movable seat, an adjusting seat and a fixed seat, wherein the base is provided with four guide posts on the periphery of the opening, the fixed seat is fixed above the base through the four guide posts, and a space exists between the fixed seat and the base; The movable seat is provided with four guide holes corresponding to the four guide posts, the guide holes are in sliding fit with the guide posts, and the movable seat is movably arranged in the interval through the fit of the guide holes and the guide posts; The fixed cutterhead is arranged below the movable seat, and the adjusting seat is used for driving or limiting the movable seat to move along the length direction of the guide column; The adjusting seat is matched with the moving seat to adjust the axial position of the fixed cutter head so as to adjust the size of the grinding gap, and the opening is used for letting the moving seat move.
  7. 7. The dry ice particle mill according to claim 6, wherein the fixing seat is provided with an internal threaded hole, the adjusting seat is of a cylindrical structure, the adjusting seat is provided with external threads, and the adjusting seat is screwed on the fixing seat through the external threads and the internal threaded hole; the lower end of the adjusting seat penetrates through the internal threaded hole to be connected with the movable seat, and the movable seat can be driven to move by rotating the adjusting seat through the cooperation of the external threads and the internal threaded hole; The guide post is sleeved with a spring piece, and two ends of the spring piece are respectively connected with the movable seat and the base.
  8. 8. A dry ice particle mill according to claim 7, wherein the fixing base is provided with a scale ring at a hole end surface of the internally threaded hole, the adjusting base is provided with an indication structure corresponding to the scale ring, the precision of the scale ring is set at 5 μm in a grid, and the adjusting range of the grinding gap is set at 50-5000 μm.
  9. 9. A dry ice particle mill as set forth in claim 2 wherein said rotary blade holder is provided with a plurality of spacing posts spaced along the edge of said rotary blade disc, said plurality of spacing posts being adapted to radially limit movement of said rotary blade disc; The limiting column protrudes out of the rotary cutter disc along the axial direction, and the protruding part of the limiting column is in radial limiting fit with the fixed cutter disc.
  10. 10. The dry ice granule grinding machine according to claim 1, wherein the grinding surface of the fixed cutter head is radially provided with a first upper grinding surface and a second upper grinding surface from inside to outside, and the grinding surface of the rotary cutter head is radially provided with a first lower grinding surface and a second lower grinding surface from inside to outside; The first upper grinding surface and the second upper grinding surface are respectively opposite to the first lower grinding surface and the second lower grinding surface, the first upper grinding surface and the first lower grinding surface are two inclined surfaces with opposite inclination, and the second upper grinding surface and the second lower grinding surface are two planes which are parallel to each other; And introducing dry ice particles between the second upper grinding surface and the second lower grinding surface through the inclined surfaces of the first upper grinding surface and the first lower grinding surface.

Description

Dry ice particle grinding machine Technical Field The utility model relates to the technical field of dry ice crushing, in particular to a dry ice particle grinding machine. Background With the continuous development of industrial production, dry ice is widely applied in various fields, such as refrigeration, cleaning, fresh keeping and the like. In these applications, it is a common requirement to grind dry ice into particles in order for it to function better. Currently, there are some limitations to the way dry ice particles are ground. Conventional dry ice grinding equipment mostly adopts a simple mechanical cutting or extrusion mode, but the methods have a plurality of problems. Firstly, the grinding uniformity is poor, and the uniformity of the dry ice particle size cannot be ensured, so that the effect is unstable in practical application. Secondly, a lot of heat is easily generated during the grinding process, and the dry ice sublimates rapidly when being heated, which not only reduces the utilization rate of the dry ice, but also may cause equipment damage. In addition, the existing dry ice grinding equipment is complex in structure, high in maintenance cost and low in grinding efficiency, and the requirement of large-scale industrial production is difficult to meet. The flat knife millstone grinding technology has been widely used in the fields of coffee bean grinding and the like, materials are extruded and ground through a pair of parallel millstones, good grinding uniformity can be achieved, and the grinding process is relatively stable. However, the application of flat blade disc grinding techniques to dry ice particle grinding has not been fully explored and developed. The physical characteristics of dry ice are greatly different from those of materials such as coffee beans, and the hardness is low and sublimation is easy, so that the flat knife millstone grinding technology needs to be improved and optimized in a targeted manner so as to adapt to the special requirements of dry ice particle grinding. In summary, there is a lack of a grinding apparatus in the market that can grind dry ice particles efficiently and uniformly, and at the same time, can effectively control heat generation, and has a simple structure and convenient maintenance. Therefore, the development of the dry ice particle grinding device based on the flat knife millstone grinding technology has important practical significance, can fill the market blank, and meets the high-quality requirement on dry ice particle grinding in industrial production. Disclosure of utility model The main technical problem to be solved by the utility model is to provide the dry ice particle grinding machine, which can effectively improve the grinding efficiency and the grinding uniformity of dry ice particles by adopting a flat knife grinding disc grinding mode, and simultaneously reduce sublimation loss of dry ice in the grinding process. In order to solve the technical problems, the utility model provides a dry ice particle grinding machine, which comprises a grinding mechanism, a transmission mechanism and a gap adjusting module, wherein the grinding mechanism comprises a base provided with a grinding cavity and a pair of parallel grinding discs, the upper end surface of the base is provided with an opening communicated with the grinding cavity, and the grinding discs are arranged in the grinding cavity through the opening; The dry ice is ground between the pair of grinding discs, wherein the pair of grinding discs are divided into a rotary cutter disc and a fixed cutter disc, a gap exists between the rotary cutter disc and the fixed cutter disc, and the gap forms a grinding gap; The clearance adjustment module is arranged above the base and comprises a dry ice guide-in channel, wherein the dry ice guide-in channel is communicated with the grinding cavity, dry ice particles fall into the grinding cavity from the dry ice guide-in channel and enter the grinding gap to be ground into dry ice powder; The clearance adjustment module is used for driving the fixed cutter disc to move along the direction facing to or far away from the rotary cutter disc, the rotary cutter disc is axially fixed relative to the fixed cutter disc, and the size of the grinding clearance is adjusted through the clearance adjustment module. In a preferred embodiment, a rotary cutter holder is arranged in the grinding cavity, and the rotary cutter head is arranged on the rotary cutter holder; The transmission mechanism comprises a motor and a rotating shaft, the rotating shaft is arranged below the rotating tool apron and connected with the rotating tool apron, the motor is arranged below the base, an output shaft of the motor is connected with the rotating shaft, and the motor drives the rotating tool apron to rotate through the rotating shaft so as to drive the rotating tool apron to rotate. In a preferred embodiment, a first step surface and a second step surface are arra