A grinding device for a dry ice cleaning machine
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FILGREEN (BEIJING) TECH CO LTD
- Filing Date
- 2025-07-24
- Publication Date
- 2026-06-30
AI Technical Summary
The existing dry ice cleaning machine's grinding device has a cumbersome and complex structure for adjusting the grinding gap, a high failure rate, and low unidirectional grinding efficiency, which affects the dry ice sandblasting efficiency.
The grinding gap is adjusted by using a linear transmission structure of motor-lead screw-slider, and the dry ice particles are bidirectionally sheared and crushed by the upper and lower grinding discs rotating in opposite directions, which simplifies the adjustment process and improves grinding efficiency.
It significantly reduced the failure rate, improved grinding efficiency, met the high-throughput particle supply requirements of dry ice blasting equipment, and enhanced the stability and precision of equipment operation.
Smart Images
Figure CN224423000U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grinding devices for dry ice cleaning machines, specifically a grinding device for a dry ice cleaning machine. Background Technology
[0002] Dry ice cleaners are a type of cleaning machine, and dry ice cleaning has seen rapid development globally. The cleaning system uses high-pressure air to propel dry ice particles onto the surface to be cleaned. The physical reaction of temperature difference causes different substances to detach at different contraction rates. When the -78°C dry ice particles contact the dirt surface, they undergo embrittlement and explosion, causing the dirt to shrink and loosen. The dry ice particles then instantly vaporize and expand 800 times, and the product's powerful peeling force quickly and thoroughly removes dirt from the surface, achieving a fast, efficient, safe, and energy-saving cleaning effect. Before using dry ice for cleaning, it needs to be ground into fine particles.
[0003] In the prior art, such as in the publication number CN222447557U, a grinding device for a dry ice cleaning machine is disclosed, which includes an inner blade assembly, an outer blade assembly, and a base; the inner blade assembly includes a rotating shaft rotatably disposed on the base and an inner blade holder mounted on the rotating shaft and rotating with the rotating shaft; the outer blade assembly includes an outer blade holder mounted on the base; wherein, the inner blade holder is embedded in the outer blade holder, and the embedding depth of the inner blade holder and the outer blade holder is adjustable.
[0004] Although the aforementioned patent allows users to adjust the distance between the inner and outer blade holders of the grinding device according to the desired grinding coarseness, and the adjustment is relatively easy and convenient for users, the structure for adjusting the grinding gap size is quite cumbersome and complex, requiring multiple structures to work together, which greatly increases the failure rate. In addition, the unidirectional grinding efficiency is low, and when using dry ice sandblasting, a large amount of dry ice is used, and the low grinding efficiency will affect the efficiency of dry ice sandblasting. Therefore, a grinding device for a dry ice cleaning machine is proposed to address the above problems. Utility Model Content
[0005] To overcome the shortcomings of existing technologies, the structure for adjusting the grinding gap size is cumbersome and complex, requiring multiple structures to work together, which greatly increases the failure rate. In addition, unidirectional grinding efficiency is low. When using dry ice sandblasting, a large amount of dry ice is used, and the low grinding efficiency will affect the efficiency of dry ice sandblasting. This utility model proposes a grinding device for a dry ice cleaning machine.
[0006] The technical solution adopted by this utility model to solve its technical problem is: the grinding device of the dry ice cleaning machine of this utility model includes a processing table, a groove is provided on the top surface of the processing table, a first motor is sleeved inside the groove, a lower grinding disc is fixedly connected to the output end of the first motor, two moving components are symmetrically fixedly connected to the surface of the processing table, and a grinding component is fixedly connected between the two moving components.
[0007] The moving component includes symmetrically fixedly connected sliding grooves to the top surface of the processing table, a second motor fixedly connected to the top of the sliding groove, a slider slidably connected inside the sliding groove, a lead screw threadedly connected inside the slider, and the top of the lead screw fixedly connected to the output end of the second motor.
[0008] The grinding assembly includes a bearing fixedly connected between two sliders. A bracket is fixedly connected to the top surface of the outer ring of the bearing. A third motor is fixedly connected to the top wall of the inner ring of the bracket. A thin rod is fixedly connected to the bottom end of the third motor. An upper grinding disc is fixedly connected to the bottom surface of the thin rod. A feed port is opened on the top surface of the upper grinding disc, and the upper grinding disc is sleeved on the inner ring of the bearing.
[0009] Preferably, the moving component has two slides, which are arranged symmetrically with respect to the central axis of the processing table.
[0010] Preferably, in the grinding assembly, the bearing is fixed between the sliders of the two moving components, the upper grinding disc is fixed to the output end of the third motor by a thin rod, and the upper grinding disc is sleeved in the inner ring of the bearing.
[0011] Preferably, the first motor and the third motor are configured to rotate in opposite directions. When the second motor drives the lead screw to rotate, the slider moves along the slide groove, and then the slider drives the grinding assembly to move as a whole to adjust the distance between the upper grinding disc and the lower grinding disc.
[0012] Preferably, the processing table is located in the area surrounding the lower grinding disc and is equipped with a powder collection chamber.
[0013] Preferably, the feed inlet on the top surface of the upper grinding disc is used to supply dry ice particles to the grinding area formed by the upper and lower grinding discs.
[0014] The advantages of this utility model are:
[0015] 1. This utility model uses a second motor to drive the lead screw to rotate, which in turn drives the slider to move linearly within the groove, thereby directly pulling the grinding assembly to lift and lower as a whole. This simplifies the grinding gap adjustment mechanism into a linear transmission structure of motor-lead screw-slider, eliminating multi-stage linkage components and significantly reducing the failure rate.
[0016] 2. This utility model uses a first motor to drive the lower grinding disc and a third motor to drive the upper grinding disc to rotate in opposite directions via a thin rod. This causes the dry ice particles to be subjected to shearing and crushing forces between the bidirectional grinding discs, which improves the grinding efficiency compared to unidirectional rotation and meets the high-throughput particle supply requirements for dry ice sandblasting. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the mobile component of this utility model;
[0020] Figure 3 This is a schematic diagram of the grinding component structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the disassembled structure of this utility model.
[0022] In the diagram: 1. Processing table; 2. First motor; 3. Lower grinding disc; 4. Moving assembly; 41. Slide groove; 42. Second motor; 43. Slider; 44. Lead screw; 5. Grinding assembly; 51. Bearing; 52. Support; 53. Third motor; 54. Thin rod; 55. Upper grinding disc. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0024] Please see Figures 1-4 As shown, a grinding device for a dry ice cleaning machine includes a processing table 1. A groove is provided on the top surface of the processing table 1. A first motor 2 is sleeved inside the groove. A lower grinding disc 3 is fixedly connected to the output end of the first motor 2. Two moving components 4 are symmetrically fixedly connected to the surface of the processing table 1. A grinding component 5 is fixedly connected between the two moving components 4.
[0025] The moving component 4 includes a slide 41 symmetrically fixedly connected to the top surface of the processing table 1. A second motor 42 is fixedly connected to the top of the slide 41. A slider 43 is slidably connected inside the slide 41. A lead screw 44 is threadedly connected inside the slider 43. The top of the lead screw 44 is fixedly connected to the output end of the second motor 42.
[0026] During operation, the moving component 4 is symmetrically fixed with two slide grooves 41 on the top surface of the processing table 1. The second motor 42 installed at the top of the slide groove 41 drives the lead screw 44 to rotate, causing the threaded slider 43 to rise and fall vertically along the slide groove 41. This, in turn, drives the grinding component 5, which is fixed between the two sliders 43, to move synchronously as a whole, realizing the linear adjustment of the gap between the upper grinding disc 55 and the lower grinding disc 3. This design simplifies the complex linkage mechanism into a linear transmission structure of the second motor 42-lead screw 44-slider 43, eliminating the cumulative error caused by gears or connecting rods, and improving the gap adjustment accuracy.
[0027] Furthermore, the grinding assembly 5 includes a bearing 51 fixedly connected between two sliders 43, a bracket 52 fixedly connected to the top surface of the outer ring of the bearing 51, a third motor 53 fixedly connected to the top wall of the inner ring of the bracket 52, a thin rod 54 fixedly connected to the bottom end of the third motor 53, an upper grinding disc 55 fixedly connected to the bottom surface of the thin rod 54, a feed port opened on the top surface of the upper grinding disc 55, and the upper grinding disc 55 is sleeved on the inner ring of the bearing 51;
[0028] During operation, the grinding assembly 5 is driven by the third motor 53 via the thin rod 54 to rotate the upper grinding disc 55 in the opposite direction to the lower grinding disc 3 driven by the first motor 2. At the same time, dry ice particles are vertically injected into the gap between the two grinding discs through the feed port opened at the center of the top surface of the upper grinding disc 55, causing the particles to be broken instantly under bidirectional shear force. This structure ensures that the grinding pressure is evenly distributed during reverse rotation by the axial limit of the upper grinding disc 55 by the inner ring of the bearing 51 and the rigid support of the bracket 52 for the third motor 53, thus meeting the high-throughput continuous feeding requirements of the dry ice sandblasting equipment.
[0029] Furthermore, the moving component 4 has two slides 41, which are arranged symmetrically with respect to the central axis of the processing table 1.
[0030] During operation, two identical sliding grooves 41 are fixedly and symmetrically on the top surface of the processing table 1. The two sliding grooves 41 are distributed on both sides of the central axis of the processing table 1 and are parallel and aligned. Each sliding groove 41 is slidably connected to an independent slider 43. The tops of the two sliders 43 are supported by bearings 51. The axially symmetrical layout of the two sliding grooves 41 enables the sliders 43 to move synchronously and in the same direction along the lead screw 44 under the drive of the second motor 42, ensuring that the lifting and lowering process of the grinding assembly 5 is free from deviation and jamming. This eliminates the problem of misalignment and wear between the upper grinding disc 55 and the lower grinding disc 3 caused by unilateral force, and improves the stability of equipment operation and the accuracy of grinding gap adjustment.
[0031] Furthermore, the feed port on the top surface of the upper grinding disc 55 is used to supply dry ice particles to the grinding area formed by the upper grinding disc 55 and the lower grinding disc 3.
[0032] During operation, a funnel-shaped feed inlet is located at the center of the top surface of the upper grinding disc 55. This feed inlet penetrates the thickness of the upper grinding disc 55 and connects to the grinding chamber formed between the upper grinding disc 55 and the lower grinding disc 3. After the dry ice particles are vertically injected into the central area of the grinding chamber through the feed inlet, they are bidirectionally sheared and crushed by the friction surfaces of the counter-rotating lower grinding disc 3 and the upper grinding disc 55. The centrally located feed inlet directly delivers dry ice particles to the bidirectionally rotating grinding core area. The reverse shearing force driven by the first motor 2 and the third motor 53 achieves instantaneous and efficient crushing, preventing particles from accumulating or escaping in the edge area, thus increasing the grinding volume per unit time and meeting the stringent requirements of dry ice blasting equipment for particle supply rate and uniformity.
[0033] Working principle: First, the first motor 2 drives the lower grinding disc 3 to rotate clockwise, while the third motor 53 drives the upper grinding disc 55 to rotate counterclockwise via the thin rod 54. Dry ice particles fall vertically into the gap between the two grinding discs through the feed port on the top surface of the upper grinding disc 55 and are instantly crushed under the action of bidirectional rotational shear force. The operator controls the second motor 42 to drive the lead screw 44 to rotate, so that the threaded slider 43 rises and falls vertically along the slide groove 41. The two sets of sliders 43 move symmetrically, pulling the bearing 51 and the bracket 52 to move as a whole, so as to achieve precise adjustment of the distance between the upper grinding disc 55 and the lower grinding disc 3. The ground ice powder splashes to the collection chamber outside the processing table 1 under the action of centrifugal force, completing the continuous operation from dry ice feeding to particle discharge, and meeting the high-efficiency feeding requirements of the sandblasting equipment.
[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A grinding device for a dry ice cleaning machine, characterized in that: The equipment includes a processing table (1), the top surface of which has a groove, a first motor (2) is fitted inside the groove, the output end of the first motor (2) is fixedly connected to a lower grinding disc (3), and two moving components (4) are symmetrically fixedly connected to the surface of the processing table (1), and a grinding component (5) is fixedly connected between the two moving components (4). The moving component (4) includes a slide groove (41) symmetrically fixedly connected to the top surface of the processing table (1), a second motor (42) fixedly connected to the top of the slide groove (41), a slider (43) slidably connected inside the slide groove (41), a lead screw (44) threadedly connected inside the slider (43), and the top of the lead screw (44) fixedly connected to the output end of the second motor (42); The grinding assembly (5) includes a bearing (51) fixedly connected between two sliders (43). A bracket (52) is fixedly connected to the top surface of the outer ring of the bearing (51). A third motor (53) is fixedly connected to the top wall of the bracket (52). A thin rod (54) is fixedly connected to the bottom end of the third motor (53). An upper grinding disc (55) is fixedly connected to the bottom surface of the thin rod (54). A feed port is opened on the top surface of the upper grinding disc (55), and the upper grinding disc (55) is sleeved on the inner ring of the bearing (51).
2. The grinding device for a dry ice cleaning machine according to claim 1, characterized in that: The moving component (4) has two slides (41), which are arranged symmetrically with respect to the central axis of the processing table (1).
3. The grinding device for a dry ice cleaning machine according to claim 1, characterized in that: In the grinding assembly (5), the bearing (51) is fixed between the sliders (43) of the two moving assemblies (4), the upper grinding disc (55) is fixed to the output end of the third motor (53) by a thin rod (54), and the upper grinding disc (55) is sleeved in the inner ring of the bearing (51).
4. The grinding device for a dry ice cleaning machine according to claim 1, characterized in that: The first motor (2) and the third motor (53) are configured to rotate in opposite directions. When the second motor (42) drives the lead screw (44) to rotate, the slider (43) moves along the slide groove (41). Then the slider (43) drives the grinding assembly (5) to move as a whole to adjust the distance between the upper grinding disc (55) and the lower grinding disc (3).
5. The grinding device for a dry ice cleaning machine according to claim 1, characterized in that: The processing table (1) is located in the area surrounding the lower grinding disc (3) and is equipped with a powder collection chamber.
6. The grinding device for a dry ice cleaning machine according to claim 1, characterized in that: The feed inlet on the top surface of the upper grinding disc (55) is used to supply dry ice particles to the grinding area formed by the upper grinding disc (55) and the lower grinding disc (3).