Rubber powder accurate grinding device

Abstract

The utility model relates to a rubber powder accurate grinding device which comprises a cylinder body, a driving motor is arranged at the center of the top surface of the cylinder body, a rotating roller is further vertically arranged in the cylinder body, the bottom of the rotating roller is movably connected with the center of the bottom surface of the cylinder body, a crushing part, a cutting part and a grinding ball are further arranged on the outer wall of the rotating roller, and the inner space of the cylinder body is divided into three areas; a feeding hole is also formed in one side of the top of the cylinder body; the conical barrel body and the rotating roller are coaxially arranged, so that materials can move downwards in a gap between the conical barrel body and the rotating roller along with gravity, the procedures of crushing, cutting and primary grinding are achieved, secondary processing is conducted through a grinding disc subsequently, and the production precision of rubber powder can be effectively improved; the water cooling structure is used for being matched with the grinding disc for cooling, compared with an existing grinding disc cooling structure, the cooling effect is more obvious, media used in the cooling structure can be recycled, and waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber grinding, and particularly relates to a fine grinding device for rubber powder. Background Art

[0002] Rubber powder is the abbreviation of rubber powder. It is generally processed from waste tires. The commonly used processing methods include: normal temperature crushing method, freezing method, and normal temperature chemical method. Rubber powder is widely used in sports plastic playgrounds, playgrounds, rubber floor tiles, waterproof coiled materials, waterproof coatings, highway modified asphalt, rubber products and other fields.

[0003] The existing rubber powder processing equipment has a simple structure and generally can only be ground once. The precision of the produced rubber powder is relatively low. Moreover, during the grinding process, the grinding disc generates serious heat. The existing cooling method of the grinding equipment often only relies on the air holes on the moving grinding disc, and its cooling effect is limited, which easily causes the grinding disc to be damaged due to high temperature, thus increasing the processing cost. Content of the Utility Model

[0004] Based on the above description, the utility model provides a fine grinding device for rubber powder to solve the disadvantages of the existing grinding equipment with a simple structure, poor grinding precision, and a limited cooling structure with air holes inside, which easily causes the grinding disc to be damaged due to high temperature and increases the processing cost.

[0005] The utility model is realized through the following technical solutions:

[0006] A fine grinding device for rubber powder, including a cylinder body. A driving motor is arranged at the center of the top surface of the cylinder body. A rotating roller is vertically arranged inside the cylinder body. The top end of the rotating roller extends upward to the outside of the cylinder body and is in transmission connection with the driving motor. The bottom of the rotating roller is movably connected to the center of the bottom surface of the cylinder body. Tooth-shaped blocks, cutting parts and grinding balls are arranged on the outer wall of the rotating roller, and the internal space of the cylinder body is divided into three areas by them. There is a gap between the tooth-shaped blocks, cutting parts, grinding balls and the inner wall of the cylinder body. A feed inlet is also arranged on one side of the top of the cylinder body.

[0007] On the basis of the above technical solutions, the utility model can be further improved as follows.

[0008] Further, both the cylinder body and the rotating roller are arranged in an inverted conical structure and coaxially arranged, and the gap between the cylinder body and the rotating roller gradually becomes smaller from top to bottom.

[0009] Further, the tooth-shaped blocks are arranged in a tooth-shaped block shape, and corresponding tooth-shaped convex parts are also arranged on the inner part of the cylinder body. The convex parts on the inner wall of the cylinder body and the tooth-shaped blocks are arranged at intervals up and down.

[0010] Further, the cutting part includes blades installed on the side wall of the revolving roll. A plurality of the blades are grouped together and arranged around the outer side wall of the cutter shaft. Two adjacent groups of the blades are arranged in a vertical stagger.

[0011] Further, the grinding balls are fixedly installed on the inner wall of the revolving roll, and hemispherical protrusions are correspondingly arranged on the inner side wall of the cylinder body. The grinding balls and the protrusions are arranged in a vertical stagger and a sandblasting layer is provided on the surface.

[0012] Further, a static grinding disc is provided on the inner bottom surface of the cylinder body. A dynamic grinding disc is provided at the bottom end of the revolving roll and its bottom surface is attached to the top surface of the static grinding disc. A plurality of feed holes are provided through the top surface of the dynamic grinding disc, and a plurality of discharge holes are provided through the bottom surface of the static grinding disc.

[0013] Further, a through hole is provided at the center of the static grinding disc and a ball bearing is provided on the inner wall of the through hole. The bottom end of the revolving roll extends straight downwards and penetrates out of the cylinder body.

[0014] Further, the inside of the revolving roll is hollow, and water injection holes are respectively provided at the top end and the bottom end outside the cylinder body. A connecting sleeve is rotatably installed on the revolving roll to completely cover the water injection holes. One side of the connecting sleeve is connected with a water delivery pipe. The two water delivery pipes are respectively connected to the inlet and the outlet of the water storage tank, and radiating fins and a water pump are respectively provided on the two water delivery pipes.

[0015] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0016] 1. The present application adopts a conical cylinder body and a revolving roll which are coaxially arranged, so that the material can move downward in the gap between the two along with the gravity. On this basis, various components are added between the outer wall of the revolving roll and the inner wall of the cylinder body, so as to achieve the processes of crushing, cutting and preliminary grinding of the rubber, so as to carry out secondary processing through the grinding disc later. The structure is compact, the production precision of the rubber powder can be effectively improved, and only one driving source is needed to complete, which greatly reduces the use cost of the equipment;

[0017] 2. The present application adopts a water cooling structure to cooperate with the grinding disc for cooling. Compared with the existing grinding disc cooling structure, the cooling effect is more obvious, and the medium used in the cooling structure can be recycled to avoid waste. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the cylinder body and the water storage tank in this embodiment;

[0019] Figure 2 It is a schematic internal structure diagram of the cylinder body in this embodiment;

[0020] Figure 3 Schematic structural diagram of the rotating roller in this embodiment;

[0021] Figure 4 Schematic internal structure diagram of the moving grinding disc in this embodiment;

[0022] Wherein: 1. Cylindrical body; 11. Driving motor; 12. Static grinding disc; 2. Rotating roller; 21. Crushing part; 22. Cutting part; 23. Grinding balls; 3. Moving grinding disc; 31. Feed hole; 4. Connecting sleeve; 5. Water delivery pipe; 6. Water storage tank; 7. Water pump; 8. Heat dissipation fins. Detailed implementation manners

[0023] For the convenience of understanding this application, the following will describe this application more comprehensively with reference to relevant attached drawings. Embodiments of this application are given in the attached drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this application in this specification are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0025] Combined with Figures 1-4 As shown, a fine grinding device for rubber powder includes:

[0026] A cylindrical body 1, with a feed port provided on one side of the top, and a driving motor 11 is fixedly installed through a motor base at the center of the top surface, and the driving motor 11 is arranged vertically downward;

[0027] A rotating roller 2, which is movably installed inside the cylindrical body 1, and its top end extends outside the cylindrical body 1 and is in transmission connection with the driving motor 11, and the bottom is movably connected to the inner bottom surface of the cylindrical body 1. Various auxiliary components are also respectively provided on its outer side wall, dividing the inside of the cylindrical body 1 into three areas for classifying and processing rubber blocks.

[0028] Specifically, in this embodiment, three auxiliary components, namely a crushing part 21, a cutting part 22, and grinding balls 23, are sequentially arranged on the side wall of the rotating roller 2 from top to bottom, so as to respectively perform primary crushing, chopping, and primary grinding on the rubber, gradually decompose it into smaller particle sizes, and facilitate high-precision grinding production.

[0029] On the basis of the above steps, both the cylindrical body 1 and the rotating roller 2 are set as inverted conical structures, so as to utilize gravity to guide the rubber blocks poured into the inside to move from top to bottom, and respectively enter the above-mentioned respective areas for processing, without additional conveying components being arranged by the staff.

[0030] Furthermore, the gap between the cylinder body 1 and the rotating roller 2 should gradually decrease from top to bottom. The purpose is to cooperate with the above three processes to gradually decompose the rubber into smaller particle size structures, improve the subsequent grinding effect, and at the same time control the downward flow rate of the rubber material to improve its processing accuracy.

[0031] Among these three auxiliary components:

[0032] The crushing member 21 is set as a toothed block structure, and a toothed protrusion is also correspondingly provided on the inner wall of the cylinder body 1. The protrusion on the inner wall of the cylinder body 1 and the crushing member 21 are arranged at intervals up and down. By forming a staggered conveying space, the rubber material is extruded, torn or crushed into smaller particle size structures for further refinement later.

[0033] The cutting part 22 is a number of blades arranged on the rotating roller 2. Every 4 blades form a group and are arranged in a circumferential array to form a rotating blade. Moreover, every two adjacent groups of blades on the knife shaft should be arranged up and down in a staggered manner. Therefore, during the rotary cutting process, it is effectively ensured that the rubber material can be cut multiple times during the downward conveying process, and it is refined into smaller fragments.

[0034] The grinding balls 23 are hemispherical in structure and are fixedly installed on the rotating roller 2. The inner wall of the box body is also provided with a hemispherical protrusion similar to it, and the protrusion on the box body and the surface of the grinding balls 23 are both sandblasted, so that a sandblasted layer is formed on the surface, thereby increasing the surface roughness and enhancing the friction force. Moreover, the protrusion on the inner wall of the box body and the grinding balls 23 are arranged up and down in a staggered manner. During the grinding process, these rubber fragments will be simultaneously subjected to double-sided friction by the protrusion and the grinding balls 23, and thus are quickly ground into a powdery structure.

[0035] In addition to the above structure, a static grinding disc 12 is also provided on the inner bottom surface of the cylinder body 1, and a dynamic grinding disc 3 is provided at the bottom end of the rotating roller 2. The dynamic grinding disc 3 and the static grinding disc 12 are mutually attached and are movably connected through a bearing structure. Moreover, the four sides of the dynamic grinding disc 3 are also movably assembled with the inner wall of the cylinder body 1 through ball bearings.

[0036] A plurality of feeding holes 31 are penetrated through the top surface of the dynamic grinding disc 3, and a number of discharging holes are penetrated through the static grinding disc 12. The two are arranged in a staggered manner, and the feeding holes 31 are larger than the discharging holes. Moreover, to prevent the rubber powder from accumulating on the top surface of the dynamic grinding disc 3, its top surface should be set as an arc surface, making it close to the feeding holes 31 in the middle area for secondary grinding.

[0037] During the operation of the grinding disc and the above three auxiliary components, heat will be generated. Long-term heating will affect the use effect of each component. Therefore, in this embodiment, a cooling structure should also be provided for it.

[0038] That is, the rotating roller 2 is set to be hollow, and a connecting sleeve 4 is sleeved at each of the two ends extending up and down outside the cylinder body 1. An injection hole is also provided on the outer side wall of the rotating roller 2. The connecting sleeve 4 exactly covers the injection hole completely, and is combined and connected through ball bearings and gaskets on the upper and lower surfaces, so that the connection part can rotate and be sealed.

[0039] The side wall of the connecting sleeve 4 is connected with a water delivery pipe 5. The two water delivery pipes 5 extend outwards and are respectively communicated with the inlet and outlet of the water storage tank 6. A water pump 7 is also equipped on the water delivery pipe 5 in the inlet direction, and heat dissipation fins 8 are arranged on the outer wall of the water delivery pipe 5 in the outlet direction.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention.

Claims

1. A fine grinding device for rubber powder, characterized in that, It includes a cylinder body (1). A driving motor (11) is provided at the center of the top surface of the cylinder body (1). Inside the cylinder body (1), a rotating roller (2) is vertically arranged. The top end of the rotating roller (2) extends upward to the outside of the cylinder body (1) and is in transmission connection with the driving motor (11). The bottom of the rotating roller (2) is movably connected to the center of the bottom surface of the cylinder body (1). Moreover, on the outer wall of the rotating roller (2), there are a crushing member (21), a cutting part (22) and grinding balls (23), which divide the internal space of the cylinder body (1) into three areas. And there are intervals between the crushing member (21), the cutting part (22) and the grinding balls (23) and the inner wall of the cylinder body (1). On one side of the top of the cylinder body (1), there is also a feed inlet.

2. The fine grinding device for rubber powder according to claim 1, characterized in that, Both the cylinder body (1) and the rotating roller (2) are arranged in an inverted conical structure and coaxially arranged, and the gap between the cylinder body (1) and the rotating roller (2) gradually becomes smaller from top to bottom.

3. The fine grinding device for rubber powder according to claim 2, characterized in that, The crushing member (21) is arranged in a toothed block shape, and correspondingly, there are toothed convex parts on the inner part of the cylinder body (1). The convex parts on the inner wall of the cylinder body (1) and the crushing member (21) are arranged at intervals up and down.

4. A fine grinding device for rubber powder according to claim 3, characterized in that, The cutting part (22) includes blades installed on the side wall of the rotating roller (2). Multiple groups of the blades are arranged in a group and surround the outer side wall of the knife shaft. Adjacent two groups of the blades are arranged in a staggered manner up and down.

5. A fine grinding device for rubber powder according to claim 4, characterized in that, The grinding balls (23) are fixedly installed on the inner wall of the rotating roller (2), and correspondingly, there are hemispherical convex parts on the inner side wall of the cylinder body (1). The grinding balls (23) and the convex parts are arranged in a staggered manner up and down and there is a sandblasting layer on the surface.

6. The fine grinding device for rubber powder according to claim 1, characterized in that, On the inner bottom surface of the cylinder body (1), there is also a static grinding disc (12). At the bottom end of the rotating roller (2), there is a dynamic grinding disc (3) and its bottom surface is attached to the top surface of the static grinding disc (12). Moreover, a plurality of feed holes (31) are provided through the top surface of the dynamic grinding disc (3), and a plurality of discharge holes are provided through the bottom surface of the static grinding disc (12).

7. A fine grinding device for rubber powder according to claim 6, characterized in that, At the center of the static grinding disc (12), there is a through hole and a ball bearing is provided on the inner wall of the through hole. The bottom end of the rotating roller (2) extends straight downward and penetrates to the outside of the cylinder body (1).

8. The fine grinding device for rubber powder according to claim 1, wherein, The inside of the rotating roller (2) is hollow, and water injection holes are respectively provided on the top end and the bottom end outside the cylinder body (1). A connecting sleeve (4) is rotatably installed on the rotating roller (2) and completely covers the water injection holes. One side of the connecting sleeve (4) is connected to a water delivery pipe (5). The two water delivery pipes (5) are respectively connected to the inlet and the outlet of a water storage tank (6). And heat dissipation fins (8) and a water pump (7) are respectively provided on the two water delivery pipes (5).

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