Dry ice grinding mechanism, dry ice cleaning machine

Abstract

The utility model relates to dry ice crushing technical field, aims at solving the inherent defect that the prior art exists'granularity is not adjustable ', provides a dry ice grinding mechanism, dry ice cleaning machine, adopts the height of adjustable grinding mechanism, realizes dry ice granularity adjustable, and the grinding mechanism includes base, fixed base, a pair of parallel millstone and adjusting lever spare, and the fixed base coaxially covers the top of base, and one of a pair of millstone millstone rotates and is established in the bottom of ice crushing cavity, and the other millstone links to each other with adjusting lever spare, adjusting lever spare is connected with fixed base through the reversing structure, and the circumferential rotation is converted into axial displacement through the reversing structure to drive the other millstone moves up and down, and the fixed base is divided into two cavities in the upper and lower, and the upper cavity is connected with adjusting lever spare, and the lower cavity is through with ice crushing cavity, and the other millstone is placed in the lower cavity, and its outer edge always sticks to the inner wall of lower cavity, and when the other millstone axially slides down, its outer edge can stick to the inner wall of lower cavity and slide and stick to the inner wall of ice crushing cavity.

Description

Technical Field

[0001] This utility model relates to the field of dry ice crushing technology, and in particular to a dry ice grinding mechanism and a dry ice cleaning machine. Background Technology

[0002] Dry ice cleaning is an environmentally friendly cleaning process that uses solid carbon dioxide (dry ice) as a medium and leverages its -78°C low-temperature sublimation properties to remove surface contaminants. When dry ice particles with a diameter of about 3 mm are accelerated to near-sonic speeds by compressed air and impact the surface to be cleaned, they instantly sublimate, resulting in an 800-fold volume expansion. This creates a triple effect of thermal shock, mechanical impact, and micro-explosion, causing the dirt to become brittle, loosen, and be carried away by the airflow. The entire process produces no secondary waste liquid and no abrasive residue.

[0003] Existing dry ice cleaning machines mainly consist of three functional units: ice crushing, ice mixing, and spraying. Traditional equipment typically uses mechanical cutting or rotating ice discs and ice grinding wheels to break large blocks of dry ice into particles. These particles then fall into the spraying chamber by their own weight and are sprayed out by high-pressure airflow.

[0004] However, this method of ice crushing has an inherent drawback: "particle size cannot be adjusted." Once the mold or cutting tool is completed, the cutting edge shape and gap size of the cutting disc or rotating ice dish are locked, and it can only output dry ice particles of a single size, making it impossible to adjust the particle size online for different working conditions. Utility Model Content

[0005] This invention aims to solve the inherent defect of "non-adjustable particle size" in the existing technology, and provides a dry ice grinding mechanism and a dry ice cleaning machine, which adopts an adjustable height grinding mechanism to achieve "adjustable particle size" of dry ice.

[0006] To solve the above-mentioned technical problems, this utility model provides a dry ice grinding mechanism, including a base, a fixed seat, a pair of parallel grinding discs and an adjusting rod. The base forms an ice crushing chamber, the fixed seat is coaxially covered above the base, one of the pair of grinding discs is rotatably disposed at the bottom of the ice crushing chamber, and the other grinding disc is linked with the adjusting rod. The adjusting rod is connected to the fixed seat through a reversing structure. When the external force rotates the adjusting rod, the reversing structure converts its circumferential rotation into axial displacement, thereby driving the other grinding disc to move up and down along the axial direction, thus adjusting the gap between the pair of grinding discs. The fixed seat is divided into upper and lower cavities. The upper cavity is connected to the adjusting rod, and the lower cavity is connected to the ice crushing cavity. The other grinding disc is placed in the lower cavity, and its outer edge is always attached to the inner wall of the lower cavity. When the other grinding disc slides down axially, its outer edge can slide down with the inner wall of the lower cavity and slide into the inner wall of the ice crushing cavity.

[0007] In a preferred embodiment, the two grinding discs are coaxially arranged, and the two grinding discs are arranged vertically or inner and outer as a first grinding disc and a second grinding disc; the first grinding disc includes an upper adjusting tool holder and an upper cutting disc fixedly connected below it, the upper adjusting tool holder is fixedly connected to the adjusting rod, and can be axially raised and lowered to change the gap; The second grinding disc includes a lower rotating cutter holder and a lower cutter disk fixed above it. The lower rotating cutter holder is located at the bottom of the ice crushing chamber. The lower rotating cutter holder can rotate at high speed to drive the lower cutter disk to form relative motion with the circumferentially stationary upper cutter disk.

[0008] In a preferred embodiment, the side wall of the base is provided with at least one or two discharge ports, which are connected to the ice crushing chamber; the discharge ports are provided with a guide ramp extending outward and downward.

[0009] In a preferred embodiment, the dry ice grinding mechanism further includes a hopper feeding device, wherein a material guide channel is provided on the hopper feeding device and directly connected to the discharge port; the outlet of the material guide channel is equipped with a removable baffle.

[0010] In a preferred embodiment, the grinding surfaces of the upper cutting disc are, from the inside to the outside, a first inclined surface and a first flat surface in the radial direction; the lower cutting disc is correspondingly provided with a second inclined surface and a second flat surface. The first inclined plane and the second inclined plane have opposite angles of inclination, forming a gradually narrowing wedge-shaped entrance; the first plane and the second plane are parallel.

[0011] In a preferred embodiment, the outer wall of the adjusting rod is provided with a first thread, and the cavity wall of the upper cavity is provided with a second thread, the two being helically engaged to form the reversing structure.

[0012] In a preferred embodiment, the junction between the ice crushing cavity and the lower cavity is chamfered.

[0013] In a preferred embodiment, a scale ring is coaxially embedded on the top surface of the upper cavity of the fixed seat, and an indicator structure is provided on the outer side wall of the adjusting rod corresponding to the scale ring. The indicator structure is exposed throughout the entire process and corresponds to the scale ring in real time.

[0014] In a preferred embodiment, the first grinding disc reaches its downward movement limit when the indicator structure slides axially down to be flush with the top surface of the upper cavity.

[0015] This utility model also provides an ice cleaning machine, including the aforementioned dry ice grinding mechanism, wherein the dry ice grinding mechanism and the dry ice cleaning machine are connected by an ice tray.

[0016] Compared with the prior art, the technical solution of this utility model has the following beneficial effects: 1. This utility model can drive the first grinding disc to rise and fall axially via a reversing mechanism by rotating the adjusting rod, thereby changing the gap of the upper second grinding disc in real time (0.2 mm-3 mm continuously adjustable), solving the "single particle size" defect of traditional cutting type, meeting the process requirements of different workpieces and different levels of contamination, without the need to replace tools or stop the machine for debugging.

[0017] 2. This utility model has two cavities built into the fixed base. The upper cavity accommodates the adjustment mechanism, and the lower cavity is connected to the ice crushing cavity. The outer edge of the first grinding disc always slides against the cavity wall, which has both guiding and sealing functions. The outer edge of the first grinding disc and the cavity wall always maintain a "metal-metal" hard guide, avoiding the spring + guide column structure, which is prone to causing the spring to freeze and jam at low temperatures of dry ice. Attached Figure Description

[0018] Figure 1 This is a perspective view of the grinding mechanism in a preferred embodiment of the present invention; Figure 2 These are the overall top view and AA sectional view of the grinding mechanism in the preferred embodiment of this utility model; Figure 3 This is an exploded view of the grinding mechanism in a preferred embodiment of the present invention; Figure 4 This is a structural diagram of the base of the grinding mechanism in a preferred embodiment of the present invention; Figure 5 This is a structural diagram of the second grinding disc of the grinding mechanism in a preferred embodiment of the present invention; Figure 6 This is a connection diagram of the adjusting rod of the grinding mechanism and the second grinding disc in a preferred embodiment of the present invention; Figure 7 This is a schematic diagram of the grinding mechanism fixing seat at two angles in a preferred embodiment of the present invention; Figure 8 This is a schematic diagram showing the connection between the grinding mechanism and the ice tray in a preferred embodiment of the present invention; Figure 9 This is a cross-sectional view showing the connection between the grinding mechanism and the ice tray in a preferred embodiment of the present invention.

[0019] Explanation of reference numerals in the attached drawings: 1. Base; 11. Ice crushing chamber; 12. Discharge port; 13. Guide ramp; 14. Chamfer; 2. Fixed seat; 21. Second thread; 22. Upper chamber; 23. Lower chamber; 24. Scale ring; 3. Adjusting rod; 31. Dry ice channel; 4. First grinding disc; 41. Upper adjusting cutter holder; 42. Upper cutter disc; 43. First inclined surface; 44. First plane; 5. Second grinding disc; 51. Lower rotating cutter holder; 52. Lower cutter disc; 53. Second inclined surface; 54. Second plane; 6. Reversing structure; 7. Hopper unloading device; 71. Guide channel; 8. Ice tray; 81. Discharge port; 82. Rotating disc; 83. Ice storage chamber; 9. Drive device; 91. Drive device output shaft. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] refer to Figures 1-7 This embodiment provides a dry ice grinding mechanism, including a base 1, a fixed seat 2, a pair of parallel grinding discs, and an adjusting rod 3. The base 1 forms an ice-crushing chamber 11 (e.g., ...). Figure 4The fixed base 2 is coaxially mounted above the base 1. The two grinding discs are coaxially arranged, with one grinding disc rotatably positioned at the bottom of the ice crushing chamber 11, and the other grinding disc linked to the adjusting rod 3. The adjusting rod 3 and the fixed base 2 are connected by a reversing structure 6 (e.g., Figure 2 The external force rotates the adjusting rod 3, and the reversing structure 6 converts its circumferential rotation into axial displacement, thereby driving the other grinding disc to move up and down, realizing stepless adjustment of the gap between the two grinding discs, and achieving continuous grinding with controllable particle size.

[0024] The center of the adjusting rod 3 is through, forming a dry ice channel 31 coaxial with the ice crushing chamber 11 (e.g., Figure 2 The grinding chamber 11 is used to feed block dry ice into the crushing chamber, where the block dry ice is ground between the gaps of the pair of grinding discs to form granular or powdered dry ice. The two grinding discs are arranged vertically as a first grinding disc 4 and a second grinding disc 5 (e.g., ...). Figure 2 The first grinding disc 4 includes an upper adjusting cutter holder 41 and an upper cutter disc 42 fixedly below it. The upper adjusting cutter holder 41 is linked with the adjusting rod 3 (e.g., Figure 6 The second grinding disc 5 can be axially raised and lowered to change the gap. It includes a lower rotating tool holder 51 and a lower tool disc 52 fixed above it (e.g., ...). Figure 5 The lower rotating blade holder 51 is located at the bottom of the ice crushing chamber 11 and is driven by the drive device 9 to rotate at high speed. The high-speed rotating lower rotating blade holder 51 drives the lower blade disk 52 to form a relative motion with the stationary upper blade disk 42. The blocky dry ice is instantly sheared and ground into particles or powder with uniform particle size in the narrow gap between the two, and then smoothly discharged downwards.

[0025] The output shaft 91 of the drive device passes through the bottom of the ice crushing chamber 11 and is coaxially fixed to the lower rotating blade holder 51. The side wall of the base 1 is provided with at least one or two discharge ports 12 (e.g., Figure 4 The discharge port 12 is connected to the ice crushing chamber 11, and the ground particles or powdered dry ice are discharged from the discharge port 12. The bottom edge of the discharge port 12 is flush with or slightly lower than the upper end surface of the lower rotating cutter holder 51 (e.g., Figure 2 The ground dry ice particles or powder fall onto the upper surface of the lower rotating cutter holder 51 through the gap between the two grinding discs. As the lower rotating cutter holder 51 rotates at high speed, they are immediately centrifugally ejected and discharged from the outlet 12. The outlet 12 is provided with a guide ramp 13 (e.g., Figure 4 This ensures smooth material discharge without any ice buildup or residue.

[0026] The outer wall of the adjusting rod is provided with a first thread, and the inner wall of the fixing seat 2 is provided with a second thread 21 (e.g., ...). Figure 3The two components are spirally coupled to form the reversing structure 6. When the adjusting rod is rotated, the adjusting rod drives the upper adjusting tool holder 41 and the upper tool disc 42 to move axially up and down, so as to change the gap between the two tool discs, thereby changing the grinding gap and realizing "adjustable particle size".

[0027] The fixing base 2 is divided into upper and lower cavities (e.g., Figure 7 The upper cavity 22 has a second thread 21 on its wall, and the adjusting rod 3 is screwed into it. The lower cavity 23 is connected to the ice crushing cavity 11. The upper adjusting knife holder 41 is placed in the lower cavity 23 and fixedly connected to the adjusting rod 3. Its outer edge is always attached to the inner wall of the lower cavity 23 to form a guide (e.g., Figure 2 The ice-crushing cavity 11 and the lower cavity 23 are provided with a chamfer 14 (e.g., Figure 4 When the upper adjusting knife holder 41 slides down along the adjusting rod 3, the chamfer 14 first guides its outer edge to smoothly fit the inner wall of the ice crushing cavity 11, ensuring that the movement is smooth and coaxial.

[0028] The fixed base 2 is coaxially fitted with a graduated ring 24 on the top surface of the upper cavity 22 (e.g., ...). Figure 2 or Figure 7 An indicator structure (not shown in the figure) is provided on the outer wall of the adjusting rod 3 corresponding to the scale ring 24. The indicator structure is exposed throughout and corresponds to the scale ring 24 in real time. When the indicator structure slides down axially to be flush with the top surface of the upper cavity 22, the grinding gap adjustment limit is reached. The gap value is visualized through the cooperation of the scale ring 24 and the indicator structure, ensuring adjustment accuracy and consistency.

[0029] The grinding path of dry ice particles / powder is a two-stage process of "introduction from an inclined plane - fine grinding from a flat plane": the grinding surface of the upper blade 42 is, from the inside to the outside in the radial direction, a first inclined plane 43 and a first flat plane 44 (e.g., Figure 6 The lower cutter head 52 is correspondingly provided with a second inclined surface 53 and a second plane 54 (e.g., Figure 5 The first inclined surface 43 and the second inclined surface 53 have opposite angles, forming a tapering wedge-shaped inlet that uniformly introduces the particles; the first plane 44 and the second plane 54 are parallel, completing the final fine grinding (e.g. Figure 2 The inclined plane first guides the flow and prevents accumulation, while the flat plane homogenizes the particle size. The two stages work together to improve grinding efficiency and particle consistency.

[0030] It should be noted that, in addition to the two grinding discs arranged vertically as mentioned in this embodiment, it can also be configured as two grinding discs arranged inside and outside, with the first grinding disc being the outer grinding disc and its inner surface forming a grinding surface, and the second grinding disc being the inner grinding disc and its outer surface forming a grinding surface. The second grinding disc can rotate at high speed and cooperate with the first grinding disc to achieve grinding.

[0031] In this embodiment, the dry ice grinding mechanism is equipped with a hopper feeding device 7 (such as...). Figure 1The hopper feeding device 7 is provided with a material guiding channel 71 that is directly connected to the discharge port 12 (e.g., Figure 2 Particles / powdered dry ice are continuously fed through the feeding channel 71. A detachable baffle is provided at the outlet of the feeding channel 71. When not in use, the baffle is immediately sealed to prevent water vapor backflow and dry ice sublimation loss.

[0032] The dry ice grinding mechanism provided in this embodiment is used in a dry ice cleaning machine. (Refer to...) Figures 8-9 Specifically, the dry ice grinding mechanism and the dry ice cleaning machine are connected via an ice-dispensing tray 8. The ice-dispensing tray 8 is formed by upper and lower shells, and a rotatable rotating disk 82 is provided inside it. At least one discharge port 81 is provided on the top of the shell (e.g., Figure 8 The position of the discharge port 81 corresponds to the position of the outlet of the guide channel 71. The housing is provided with at least one discharge port. The rotating disk 82 is evenly distributed with a plurality of ice storage chambers 83 (e.g., Figure 9 The opening trajectory of the ice storage chamber 83 is always aligned with the discharge port 81. The granular / powdered dry ice output by the dry ice grinding mechanism falls into the currently aligned ice storage chamber 83 in one go through the guide channel 71 and the discharge port 81; the rotating disk 82 continues to rotate, sending the ice storage chamber 83 to the discharge port.

[0033] The above description is only a preferred embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model by those skilled in the art within the scope of the technology disclosed in the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A dry ice grinding mechanism, characterized by: It includes a base, a fixed seat, a pair of parallel grinding discs and an adjusting rod. The base forms an ice crushing chamber. The fixed seat is coaxially covered above the base. One of the pair of grinding discs is rotatably disposed at the bottom of the ice crushing chamber, and the other grinding disc is linked with the adjusting rod. The adjusting rod is connected to the fixed seat through a reversing structure. When the external force rotates the adjusting rod, the reversing structure converts its circumferential rotation into axial displacement, thereby driving the other grinding disc to move up and down along the axial direction, thus adjusting the gap between the pair of grinding discs. The fixed seat is divided into upper and lower cavities. The upper cavity is connected to the adjusting rod, and the lower cavity is connected to the ice crushing cavity. The other grinding disc is placed in the lower cavity, and its outer edge is always attached to the inner wall of the lower cavity. When the other grinding disc slides down axially, its outer edge can slide down with the inner wall of the lower cavity and slide into the inner wall of the ice crushing cavity.

2. A dry ice abrading mechanism according to claim 1, wherein: The two grinding discs are coaxially arranged, and the two grinding discs are arranged vertically or as an inner and outer casing of a first grinding disc and a second grinding disc; the first grinding disc includes an upper adjusting tool holder and an upper cutting disc fixedly connected below it, the upper adjusting tool holder is fixedly connected to the adjusting rod, and can be axially raised and lowered to change the gap; The second grinding disc includes a lower rotating cutter holder and a lower cutter disk fixed above it. The lower rotating cutter holder is located at the bottom of the ice crushing chamber. The lower rotating cutter holder can rotate at high speed to drive the lower cutter disk to form relative motion with the circumferentially stationary upper cutter disk.

3. A dry ice abrading mechanism according to claim 2, wherein: The base has at least one or two discharge ports on its side wall, and the discharge ports are connected to the ice crushing chamber; the discharge ports are provided with a guide ramp extending outward and downward.

4. A dry ice abrading mechanism according to claim 3, wherein: The dry ice grinding mechanism also includes a hopper feeding device, which has a material guide channel that is directly connected to the discharge port; the outlet of the material guide channel is equipped with a removable baffle.

5. A dry ice abrading mechanism according to claim 2, wherein: The grinding surfaces of the upper cutting disc are, from the inside to the outside, a first inclined surface and a first flat surface in the radial direction; the lower cutting disc is correspondingly provided with a second inclined surface and a second flat surface. The first inclined plane and the second inclined plane have opposite angles of inclination, forming a gradually narrowing wedge-shaped entrance; the first plane and the second plane are parallel.

6. A dry ice abrading mechanism according to claim 1, wherein: The outer wall of the adjusting rod is provided with a first thread, and the cavity wall of the upper cavity is provided with a second thread. The two are helically engaged to form the reversing structure.

7. A dry ice abrading mechanism according to claim 6, wherein: The junction between the ice crushing chamber and the lower chamber is chamfered.

8. A dry ice abrading mechanism according to claim 2, wherein: The fixed seat is coaxially embedded with a scale ring on the top surface of the upper cavity. An indicator structure is provided on the outer side wall of the adjusting rod corresponding to the scale ring. The indicator structure is exposed throughout the entire process and corresponds to the scale ring in real time.

9. A dry ice abrading mechanism according to claim 8, wherein: When the indicator structure slides axially down to be flush with the top surface of the upper cavity, it reaches the downward movement limit of the first grinding disc.

10. A dry ice cleaning machine characterized by: The invention includes a dry ice grinding mechanism according to any one of claims 1-9, wherein the dry ice grinding mechanism and the dry ice cleaning machine are connected via an ice tray.

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