Coal slime pressing and gathering type forming machine

Abstract

The utility model provides a coal slime pressure gathering type forming machine which comprises the following components: a spiral stirring device which comprises a stirring chamber, a main shaft and blades which are spirally arranged on the main shaft; the main shaft is positioned in the stirring cavity and is driven by the power device to rotate; the extrusion cavity is of a semi-closed cylinder structure, and an inlet and an outlet are formed in the two ends of the extrusion cavity respectively; an inlet of the extrusion cavity is in butt joint with the stirring cavity located at the output end of the blade screw; and the screen plate is arranged at an outlet of the extrusion cavity. The device provides a coal slime forming solution for coal mine coal slime forming, solves a series of problems that coal slime which is prone to argillization blocks a chute, is difficult to transport and mix and the like and affects production, can provide continuous and stable feeding for subsequent drying and other links, and meanwhile can guarantee that dried materials are not prone to falling off. The device is high in tightness, small in dust yield and convenient to transport, and the risk of bin blockage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of coal slime molding equipment, in particular to a coal slime compression molding machine. Background Art

[0002] Coal slime is a type of fine-particle, high-moisture, high-ash material produced during the mining and washing of raw coal. Due to the high moisture content of coal slime and the high content of clay minerals in its components, the viscosity of the coal slime is high, which often causes blockage of transportation and storage equipment and facilities, bringing great inconvenience to the production of coal mines and coal preparation plants. In addition, due to its bulk state, the viscous coal slime is not convenient to transport during loading and storage, which often causes problems such as pollution of transportation equipment, blockage of chutes and storage bins, and difficulty in mixing. At present, the coal slime in the production process is all in a bulk transportation state, and there has been no development and application of online coal slime molding equipment. Utility Model Content

[0003] Therefore, the technical problem to be solved by the utility model is to solve the problem that coal slime is in a bulk state and is prone to contamination and blockage during transportation, which affects the smooth progress of production.

[0004] In order to solve the above technical problems, the present application provides a coal slime pressing and gathering molding machine, comprising:

[0005] The spiral stirring device comprises a stirring chamber, a main shaft and blades arranged in a spiral shape on the main shaft; the main shaft is located in the stirring chamber and rotates under the drive of a power device;

[0006] The extrusion chamber is a semi-enclosed cylindrical structure, with an inlet and an outlet respectively provided at both ends of the extrusion chamber; the inlet of the extrusion chamber is connected to the stirring chamber located at the spiral output end of the blade;

[0007] The screen plate is arranged at the outlet of the extrusion chamber.

[0008] Furthermore, the main shaft extends into the extrusion cavity until it reaches the mesh plate, and a cutting pin is arranged on a portion of the main shaft close to the mesh plate, and the mesh plate is within the rotation range of the cutting pin.

[0009] Furthermore, the cutting pin is attached to the mesh plate, and the cutting pin is located in the extrusion cavity.

[0010] Furthermore, the main shaft located in the extrusion cavity is in a gradually shrinking cone shape.

[0011] Furthermore, the head end of the main shaft passes through the mesh plate to form a main shaft extension section, an end plate is arranged on the outside of the mesh plate, a spacing is provided between the end plate and the mesh plate, the end plate is fixedly connected to the mesh plate through a connecting rod arranged in a hollow shape, an axis end positioning device is arranged on the end plate, and the main shaft extension section is rotatably connected to the axis end positioning device.

[0012] Furthermore, the tail end of the main shaft is connected to the power device, and a feed hopper is arranged above the stirring chamber.

[0013] Furthermore, there are more than two spiral stirring devices, the stirring chambers of adjacent spiral stirring devices are communicated, and the blades of adjacent spiral stirring devices are arranged in spirals with opposite rotation directions.

[0014] Furthermore, the blades are arranged in a discontinuous spiral shape.

[0015] By adopting the above technical solution, the utility model has the following technical effects:

[0016] The coal slime compression molding machine provided by the utility model pours coal slime into the stirring chamber. Driven by the spirally arranged blades, the coal slime is stirred by the blades on the one hand, so that it is evenly mixed as a whole, and the uneven texture of the coal slime is prevented; on the other hand, the spirally arranged blades drive the coal slime to move toward the spiral output end, and then the coal slime enters the extrusion chamber. Because the outlet of the extrusion chamber is blocked by a mesh plate, and coal slime continues to flow in from the rear, the viscous coal slime is filled in the extrusion chamber. As the blades continuously push the coal slime into the extrusion chamber in a spiral manner, the various parts of the coal slime therein are squeezed to a state of consistent compactness at various locations, and then squeezed out of the mesh plate as the pressure in the extrusion chamber increases, thereby forming a bar-shaped shaped product. The above-mentioned extrusion process adopts spiral stirring, thus having continuous feeding and discharging capabilities, and can realize streamlined production, so it can be inserted into the existing coal washing production line to provide a shaping process for bulk coal slime. The shaped coal slime products have the characteristics of smooth surface, uniform texture and relatively compactness due to the aforementioned extrusion process, which effectively solves a series of problems affecting production such as chute blockage, transportation difficulty and mixing difficulty caused by high moisture content and high viscosity of coal slime in the production process. It can also provide continuous and stable feeding for subsequent drying links, and at the same time, it can also ensure that the dried material has high density, low dust production, convenient transportation and reduced risk of clogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic front cross-sectional view of the structure of an embodiment of the utility model;

[0019] Figure 2It is a schematic top cross-sectional view of the structure of an embodiment of the utility model;

[0020] Figure 3 for Figure 1 Schematic cross-sectional view of the structure at A-A in the figure.

[0021] Description of reference numerals:

[0022] 1-reducer, 2-gearbox, 3-feed hopper, 4-blade, 5-spindle, 6-spindle taper, 7-cutting pin, 8-mesh plate, 9-connecting rod, 10-end plate, 11-shaft end positioning device, 12-spindle extension section, 13-extrusion chamber, 14-motor. DETAILED DESCRIPTION

[0023] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] It should be noted that in the description of the present invention, the coordinate system used in this specification when describing the orientation is determined by the posture of its main view, and the naming of the observation angle of the corresponding view is also based on this. Therefore, the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. in this specification indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0027] This embodiment provides a coal slime compression molding machine.

[0028] In one embodiment, reference Figures 1 to 3 As shown, it includes: a spiral stirring device, an extrusion chamber 13 and a mesh plate 8. The spiral stirring device includes a stirring chamber, a main shaft 5 and blades 4 arranged in a spiral shape on the main shaft 5. The main shaft 5 is located in the stirring chamber and rotates under the drive of the power device. The power device can be in the form of a motor 14 driving a reducer 1 to output power. The extrusion chamber 13 is a semi-closed cylindrical structure, and an inlet and an outlet are respectively provided at both ends of the extrusion chamber 13. The inlet of the extrusion chamber 13 is connected to the stirring chamber located at the spiral output end of the blade 4. The mesh plate 8 is arranged at the outlet of the extrusion chamber 13, and the mesh shape can be set to various shapes such as square or circular.

[0029] When the device is in use, coal sludge is poured into the stirring chamber. Driven by the spirally arranged blades 4, the coal sludge is stirred by the blades 4 on the one hand, so that it is evenly mixed as a whole to prevent the occurrence of uneven local texture of the coal sludge. On the other hand, the spirally arranged blades 4 will drive the coal sludge to move toward the spiral output end, and then the coal sludge enters the extrusion chamber 13. Because the outlet of the extrusion chamber 13 is blocked by the mesh plate 8, and there is continuous coal sludge pouring in from the back, the viscous coal sludge is filled in the extrusion chamber 13. As the blades 4 continuously push the coal sludge into the extrusion chamber 13 in a spiral manner, the various parts of the coal sludge therein are squeezed to a state where the compactness of each part is consistent, and then as the pressure in the extrusion chamber 13 increases, it is squeezed out of the mesh plate 8, thereby forming a bar-shaped shaped product. The above extrusion process adopts spiral stirring, thus having continuous feeding and discharging capabilities, and can realize streamlined production, so it can be inserted into the existing coal washing production line to provide a shaping process for bulk coal sludge. The shaped coal slime products have the characteristics of smooth surface, uniform texture and relatively compactness due to the aforementioned extrusion process, which effectively solves a series of problems affecting production such as chute blockage, transportation difficulty and mixing difficulty caused by high moisture content and high viscosity of coal slime in the production process. It can also provide continuous and stable feeding for subsequent drying links, and at the same time, it can also ensure that the dried material has high density, low dust production, convenient transportation and reduced risk of clogging.

[0030] Based on the above implementation, in a preferred implementation, Figures 1 to 3 As shown, the main shaft 5 extends into the extrusion cavity 13 until the mesh plate 8, and a cutting pin 7 is provided on the portion of the main shaft 5 close to the mesh plate 8, and the mesh plate 8 is within the rotation range of the cutting pin 7. After the cutting pin 7 is provided, as the main shaft 5 rotates, the cutting pin 7 will periodically cut the coal slime strips extruded from the mesh plate 8, so that the coal slime is formed into small strips or even granules, and the product length is uniform, so that it is convenient for transportation, delivery and storage.

[0031] Based on the above implementation, in a preferred implementation, Figure 1 and 2As shown, the cutting pin 7 is attached to the mesh plate 8, and the cutting pin 7 is located in the extrusion cavity 13. The cutting pin 7 is attached to the mesh plate 8 to make the shearing more efficient and avoid the root of the coal mud strip from bending after the shear force. In addition, the cutting pin 7 is arranged inside the extrusion chamber 13 instead of being arranged outside the extrusion chamber 13 for shearing, so that the cutting pin 7 can re-stir the coal slime at the outlet of the extrusion chamber 13 when performing the cutting action. This is beneficial to prevent the coal slime from clogging the mesh plate 8, because the coal slime is a highly viscous substance and it is easy to clog the mesh when facing the high resistance mesh plate 8; and the cutting pin 7 close to the mesh plate 8 will leave very little root of the cut coal slime strip in the mesh when shearing, so that under the action of gravity, when the coal slime strip falls, the root in the mesh will be taken out together, leaving the mesh empty, and at the same time, the cutting pin 7 will push the coal slime to the front and rear sides when cutting, so the coal slime in the mesh will be pushed by the cutting pin 7, thereby helping the flow of material in the mesh and reducing the risk of blockage. On the other hand, the cutting pin 7 stirs the coal slime near the extrusion chamber 13 again, which can improve the uniformity of the coal slime strips. Although the coal slime in the extrusion chamber 13 will form a uniform texture in theory, the coal slime in the extrusion chamber 13 may still have an uneven texture due to the high resistance viscosity of the coal slime and the fact that the spiral pusher is not as consistent as the flat plug pusher in applying force everywhere. The cutting pin 7 rotates at the outlet of the extrusion chamber 13 to form a secondary stirring of the coal slime. The cutting pin 7 is in the extrusion chamber 13 that is already filled with coal slime. When the pressure chamber 13 is rotated and cut, a pushing force will be generated on the front and rear sides of the coal slime when it is separated, that is, an extrusion force consistent with the discharge direction is generated on the rear side coal slime, and an internal thrust opposite to the discharge direction is generated on the front side coal slime. This reverse internal thrust cooperates with the forward thrust generated by the front spiral stirring, thereby forming a front and rear extrusion mode of the coal slime in the extrusion chamber 13. Under the joint action of the front and rear extrusion forces, the coal slime can obtain a higher quality texture consistency, and the product particles can be more compact and not easy to break.

[0032] Based on the above implementation, in a preferred implementation, Figure 1 and 2 As shown, the spindle 5 located in the extrusion cavity 13 is in a gradually shrinking cone shape, namely, the spindle cone 6 in the figure. Because the rotation range of the cutting pin 7 is limited, if the spindle 5 in the middle still occupies a certain passing area, it will affect the output rate of the coal slime per unit time. The gradually shrinking spindle cone 6 makes room for the limited rotation range of the cutting pin 7, allowing more coal slime to pass through, and the spindle 5 with no sudden change in cross section can also make the coal slime flow smoother and avoid the occurrence of uneven texture.

[0033] Based on the above implementation, in a preferred implementation, Figure 1 and 2As shown, the head end of the main shaft 5 passes through the mesh plate 8 to form a main shaft extension section 12, an end plate 10 is arranged outside the mesh plate 8, and a spacing is provided between the end plate 10 and the mesh plate 8. The end plate 10 is fixedly connected to the mesh plate 8 through a hollowed-out connecting rod 9, and an axis end positioning device 11 is arranged on the end plate 10, and the main shaft extension section 12 is rotatably connected to the axis end positioning device 11. Although the positioning connection of the head end of the main shaft 5 can be carried out in the extrusion chamber 13, because the axis end positioning device 11 is a component that occupies a certain volume and has parts such as bearings and bearing seats, if it is set in the extrusion chamber 13, the axis end positioning device 11 protruding from the side of the shaft will affect the smooth flow of the coal slime, thereby causing the problem of uneven texture. In addition, the fine powder in the coal slime may also penetrate and be blocked in the axis end positioning device 11, thereby causing the problem of poor rotation of the main shaft 5. However, if the head end of the main shaft 5 is extended out of the mesh plate 8 and connected through the end plate 10 located outside the mesh plate 8, this problem can be avoided. The end plate 10 is spaced apart from the mesh plate 8 and connected with the hollow connecting rods 9, so that the extruded coal slime strips can smoothly come out of the mesh plate 8 and then be cut off and fall into the next process.

[0034] Based on the above implementation, in a preferred implementation, Figure 1 and 3 As shown, the tail end of the main shaft 5 is connected to the power device, and a feed hopper 3 is arranged above the stirring chamber. Because the spiral conveying method of the blade 4 can adopt the scheme of feeding the material from the rear end of the spiral, it can also adopt the scheme of feeding from the top of the spiral. And because the head end of the main shaft 5 is located at the discharge port of the entire device, if the main shaft 5 is connected to the power device at this end, it is easy to block the discharge port, which is not conducive to the positioning of the equipment. The problem can be avoided by connecting the tail end of the main shaft 5 to the power device. At the same time, feeding from the top of the stirring chamber can also use its own weight to allow the viscous coal sludge to enter the equipment smoothly, and there is no need to set additional conveying pressure when introducing materials from the rear end of the spiral.

[0035] Based on the above implementation, in a preferred implementation, Figure 2 and 3 As shown, more than two spiral stirring devices are provided to improve the production efficiency of the equipment. Multiple main shafts 5 can distribute power through the gear box 2. The stirring chambers of adjacent spiral stirring devices are connected, while adjacent extrusion chambers 13 may be connected or not. The blades 4 of adjacent spiral stirring devices are arranged in spirals with opposite rotation directions, so that the spirals with opposite rotation directions can produce a large degree of stirring and mixing of the coal slime between them when rotating at the same time, so that the coal slime has a more sufficient texture consistency.

[0036] Based on the above embodiment, in a preferred embodiment, the blades 4 are arranged in a discontinuous spiral shape. Although the blades 4 are simplified as continuous spiral lines in the figures, it is actually preferred that the blades 4 are discontinuous small pieces and are arranged in an intermittent spiral shape. Compared with continuous blades, such intermittently arranged blades 4 can produce a stronger stirring effect on the coal slime and make the coal slime texture more uniform.

[0037] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A coal slime compression molding machine, characterized in that: include: A spiral stirring device comprises a stirring chamber, a main shaft (5) and blades (4) arranged in a spiral shape on the main shaft (5); the main shaft (5) is located in the stirring chamber and rotates under the drive of a power device; The extrusion chamber (13) is a semi-enclosed cylindrical structure, and an inlet and an outlet are respectively provided at both ends of the extrusion chamber (13); the inlet of the extrusion chamber (13) is connected to the stirring chamber located at the spiral output end of the blade (4); The mesh plate (8) is arranged at the outlet of the extrusion chamber (13).

2. The coal slime compression molding machine according to claim 1, characterized in that: The main shaft (5) extends into the extrusion cavity (13) until it reaches the mesh plate (8). A cutting pin (7) is arranged on the part of the main shaft (5) close to the mesh plate (8), and the mesh plate (8) is within the rotation range of the cutting pin (7).

3. The coal slime compression molding machine according to claim 2, characterized in that: The cutting pin (7) is attached to the mesh plate (8), and the cutting pin (7) is located in the extrusion cavity (13).

4. The coal slime compression molding machine according to claim 2, characterized in that: The main shaft (5) located in the extrusion cavity (13) is in a gradually shrinking cone shape.

5. The coal slime compression molding machine according to claim 2, characterized in that: The head end of the main shaft (5) passes through the mesh plate (8) to form a main shaft extension section (12); an end plate (10) is arranged outside the mesh plate (8); a spacing is provided between the end plate (10) and the mesh plate (8); the end plate (10) is fixedly connected to the mesh plate (8) via a hollow-arranged connecting rod (9); a shaft end positioning device (11) is arranged on the end plate (10); and the main shaft extension section (12) is rotatably connected to the shaft end positioning device (11).

6. The coal slime compression molding machine according to claim 5, characterized in that: The tail end of the main shaft (5) is connected to the power device, and a feed hopper (3) is arranged above the stirring chamber.

7. The coal slime compression molding machine according to any one of claims 1 to 6, characterized in that: There are more than two spiral stirring devices, the stirring chambers of adjacent spiral stirring devices are communicated, and the blades (4) of adjacent spiral stirring devices are arranged in spirals with opposite rotation directions.

8. The coal slime compression molding machine according to claim 7, characterized in that: The blades (4) are arranged in a discontinuous spiral shape.

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