Stirring device for eraser raw materials

Abstract

The utility model discloses an eraser raw material stirring device which is characterized in that after eraser raw materials are stirred by the stirring device and are discharged, part of the raw materials can be remained on the inner wall of a barrel, a stirring shaft and stirring blades, and at the moment, spraying water flows along a water inlet hose, an annular spraying pipe and a spraying head through a water pump; the inner wall of the barrel body, the stirring shaft and the stirring blades are sprayed and scoured; meanwhile, in the spraying process, the problem of insufficient spraying possibly exists due to spraying of a plurality of spraying heads, at the moment, a linkage arm and an annular spraying pipe are adjusted and driven through a power assembly to rotate by an angle in a reciprocating mode, and the angle in the reciprocating mode of the annular spraying pipe is the included angle between the two spraying heads; therefore, the inner wall of the cylinder body, the stirring shaft and the stirring blades are sprayed and scoured comprehensively, and the cleaning effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of eraser processing technology, and in particular to a stirring device for eraser raw materials. Background Technology

[0002] The main raw materials of erasers include rubber, crosslinking agents (sulfides), softeners (vegetable oils), dyes, and pumice powder. During processing, these raw materials need to be mixed and stirred to ensure that the various components are evenly dispersed, thereby achieving the ideal hardness, friction, and elasticity.

[0003] The specific functions of stirring are as follows: (1) Uniform dispersion: Stirring can fully mix raw materials such as rubber, crosslinking agent, softener, dye, and pumice powder, ensuring that each component is evenly distributed in the final product. This can improve the overall performance of the eraser and avoid local over-hardness or under-softness; (2) Enhanced physical properties: During the stirring process, the crosslinking agent (such as sulfide) reacts fully with the rubber to form a network structure, enhancing the elasticity and abrasion resistance of the eraser. The addition of softener and pumice powder can adjust the hardness and friction of the eraser, making it more suitable for erasing pencil marks; (3) Improved product quality: Uniformly mixed raw materials can reduce product defects such as bubbles, impurities, and uneven color. This can ensure that the produced erasers have stable quality and a longer service life; (4) Environmental protection and safety: Stirring can reduce environmental pollution and safety hazards. For example, using a mixer for high-temperature and high-pressure mixing can reduce dust and improve the safety of the working environment.

[0004] When the eraser raw material is discharged after being mixed, some raw material will adhere to the inner wall of the cylinder and the mixing mechanism, which will cause inconvenience in cleaning. Utility Model Content

[0005] The purpose of this invention is to provide a mixing device for eraser raw materials, which facilitates cleaning.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a mixing device for eraser raw materials, comprising a cylinder, a mixing mechanism disposed on the cylinder, a feeding hopper disposed at the top of the cylinder, a discharging valve disposed at the bottom of the cylinder, and a spraying mechanism, wherein the mixing mechanism comprises a geared motor disposed on the cylinder, a mixing shaft linked to the output shaft of the geared motor and located inside the cylinder, and mixing blades disposed on the mixing shaft; a bracket for mounting the geared motor of the mixing mechanism is disposed at the upper end of the cylinder, an upper end cover is disposed at the top of the cylinder, the geared motor of the mixing mechanism extends through the upper end cover, a sealing and shock-absorbing component is disposed on the upper end cover and abuts against the periphery of the lower end of the geared motor, and the feeding hopper is disposed on the upper end cover; The edge of the upper end cover is provided with an annular receiving groove. The spraying mechanism includes an annular spray pipe rotatably connected in the annular receiving groove, multiple spray heads arranged in a circumferential array at the bottom of the annular spray pipe and extending downwards towards the middle of the lower cylinder, a water inlet connector provided on the upper end cover, a water inlet hose provided between the water inlet connector and the annular spray pipe, and a water pump provided on the periphery of the cylinder and communicating with the water inlet connector. The periphery of the upper end cover is provided with an arc-shaped groove, and the periphery of the annular spray pipe is provided with a linkage arm that extends out of the arc-shaped groove. A power component is provided between the upper end cover and the linkage arm to drive the linkage arm to swing back and forth to drive the annular spray pipe to rotate back and forth by an angle. The angle of reciprocating rotation of the annular spray pipe is the included angle between the two spray heads.

[0007] By adopting the above technical solution, after the eraser raw material is stirred by the stirring device and discharged, some raw material will remain on the inner wall of the cylinder, the stirring shaft, and the stirring blades. At this time, the water pump drives the spray water along the water inlet hose, the annular spray pipe, and the spray head to spray and wash the inner wall of the cylinder, the stirring shaft, and the stirring blades. At the same time, during the spraying process, since the spraying from multiple spray heads may not be sufficient, the power component is used to adjust the reciprocating rotation angle of the linkage arm and the annular spray pipe. The reciprocating rotation angle of the annular spray pipe is the included angle between the two spray heads, thereby achieving comprehensive spraying and washing of the inner wall of the cylinder, the stirring shaft, and the stirring blades, improving the cleaning effect.

[0008] A further feature of this invention is that the upper end cover is provided with a mounting hole for the geared motor to pass through, the sealing and shock-absorbing component is an annular rubber sleeve fitted inside the mounting hole, the cross-section of the sealing and shock-absorbing component is a "U" shape rotated 90 degrees, and the inner ring of the sealing and shock-absorbing component abuts against the periphery of the mounting base of the geared motor.

[0009] By adopting the above technical solution, the cross-section of the annular rubber sleeve is a "U" shape rotated 90 degrees, which facilitates installation at the mounting hole; and the inner ring of the annular rubber sleeve is pressed against the periphery of the mounting base of the geared motor to achieve sealing and shock absorption.

[0010] A further feature of this invention is that the power assembly includes a power cylinder mounted on the top of the upper end cover, and a hinged arm hinged to the end of the push rod of the power cylinder and the rotating swing arm. During the extension and retraction of the push rod of the power cylinder, the hinged arm drives the linkage arm to swing back and forth.

[0011] By adopting the above technical solution, the power assembly includes a power cylinder on the top of the upper end cover, a hinged arm that is hinged to the end of the push rod of the power cylinder and the rotating swing arm, so that during the extension and retraction of the push rod of the power cylinder, the hinged arm drives the linkage arm to swing back and forth, so that the angle of the spray head of the annular spray pipe changes back and forth, so as to achieve all-round rinsing.

[0012] A further feature of this invention is that: the annular receiving groove is provided with a plurality of plastic buckles arranged in a circumferential array and having arc-shaped slots, the centers of the arc-shaped slots of the plurality of plastic buckles coincide, the annular spray pipe is fastened to the plurality of plastic buckles, and there is a gap fit between the annular spray pipe and the plastic buckles.

[0013] By adopting the above technical solution, and by setting multiple plastic clips with arc-shaped grooves, the annular spray pipe is fastened to multiple plastic clips, and the annular spray pipe and the plastic clips are fitted with a gap, thereby realizing the rotational installation of the annular spray pipe.

[0014] A further feature of this invention is that: a discharge pipe is provided at the bottom of the cylinder, a discharge valve is installed at the lower end of the discharge pipe, a drain pipe is provided around the discharge pipe, and a first three-way valve is provided on the drain pipe, one of the joints of the first three-way valve being used for drainage.

[0015] By adopting the above technical solution, when the mixing device is set in the production line, the discharge valve is connected to the subsequent process. At this time, by setting up a drain pipe and a first three-way valve, the wastewater generated during the spray cleaning process can be discharged.

[0016] A further feature of this invention is that the water pump is provided with a second three-way valve at its inlet end, one of the connectors of the second three-way valve is used to connect to the urban water network, and a return pipe is provided between the other connector of the first three-way valve and the other connector of the second three-way valve.

[0017] By adopting the above technical solution, the particles of residual eraser material that do not have an angle can clog the spray head. At this time, by setting up a return water pipe, the wastewater in the return water pipe is used for water circulation spraying during the initial spray cleaning process, which has the effect of saving water resources. The subsequent spraying uses water from the city's water network for a second cleaning spray. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a partial structural cross-sectional view of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the upper end cover and part of the spraying mechanism in this utility model. Figure 1 ;

[0021] Figure 4 This is a schematic diagram of the structure of the upper end cover and part of the spraying mechanism in this utility model. Figure 2 .

[0022] Reference numerals in the attached drawings: 1. Cylinder; 2. Stirring mechanism; 2-1. Gear motor; 2-2. Stirring shaft; 2-3. Stirring blades; 3. Feed hopper; 4. Discharge valve; 5. Spraying mechanism; 5-1. Annular spray pipe; 5-2. Spray head; 5-3. Water inlet connector; 5-4. Water inlet hose; 5-5. Water pump; 6. Support; 7. Top cover; 7-1. Annular receiving groove; 7-2. Arc groove; 7-3. Mounting hole; 8. Sealing and shock absorption component; 9. Linkage arm; 10. Power assembly; 10-1. Power cylinder; 10-2. Hinge arm; 11. Plastic buckle; 11-1. Arc groove; 12. Discharge pipe; 13. Drain pipe; 14. First three-way valve; 15. Second three-way valve; 16. Return water pipe. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings.

[0024] Example: A mixing device for eraser raw materials, such as 1 to Figure 4 As shown, it includes a cylinder 1, a stirring mechanism 2 installed on the cylinder 1, a feed hopper 3 installed at the top of the cylinder 1, a discharge valve 4 installed at the bottom of the cylinder 1, and a spraying mechanism.

[0025] like Figures 1 to 4 As shown, the stirring mechanism 2 includes a geared motor 2-1 mounted on the cylinder 1, a stirring shaft 2-2 linked to the output shaft of the geared motor 2-1 and located inside the cylinder 1, and stirring blades 2-3 mounted on the stirring shaft 2-2. A bracket 6 for mounting the geared motor 2-1 of the stirring mechanism 2 is provided at the upper end of the cylinder 1. An upper end cover 7 is provided at the top of the cylinder 1. The geared motor 2-1 of the stirring mechanism 2 passes through the upper end cover 7. A sealing and shock-absorbing component 8 is provided on the upper end cover 7, abutting against the lower periphery of the geared motor 2-1. A feed hopper 3 is provided on the upper end cover 7. The upper end cover 7 has a mounting hole 7-3 for the geared motor 2-1 to pass through. The sealing and shock-absorbing component 8 is an annular rubber sleeve fitted inside the mounting hole 7-3. The cross-section of the annular rubber sleeve is a "U" shape rotated 90 degrees. The inner ring of the annular rubber sleeve abuts against the periphery of the mounting base of the geared motor 2-1.

[0026] like Figures 1 to 4 As shown, the edge of the upper end cover 7 is provided with an annular receiving groove 7-1. The spraying mechanism includes an annular spray pipe 5-1 rotatably connected in the annular receiving groove 7-1, multiple spray heads 5-2 arranged in a circumferential array at the bottom of the annular spray pipe 5-1 and extending downwards towards the middle of the lower cylinder 1, a water inlet connector 5-3 provided on the upper end cover 7, a water inlet hose 5-4 provided between the water inlet connector 5-3 and the annular spray pipe 5-1, and a water pump 5-5 provided on the periphery of the cylinder 1 and communicating with the water inlet connector 5-3. The periphery of the upper end cover 7 is provided with an arc-shaped groove 7-2. A linkage arm 9 extending out of the arc-shaped groove 7-2 is welded to the periphery of the annular spray pipe 5-1. A power component 10 is provided between the upper end cover 7 and the linkage arm 9 to drive the linkage arm 9 to swing back and forth to drive the annular spray pipe 5-1 to rotate back and forth by an angle. The angle of rotation of the annular spray pipe 5-1 is the included angle between the two spray heads 5-2. The power assembly 10 includes a power cylinder 10-1 mounted on the top of the upper end cover 7, and a hinged arm 10-2 hinged to the push rod end of the power cylinder 10-1 and the swing arm for rotation. During the extension and retraction of the push rod of the power cylinder 10-1, the hinged arm 10-2 drives the linkage arm 9 to swing back and forth.

[0027] like Figures 1 to 4 As shown, the annular receiving groove 7-1 is provided with a plurality of plastic buckles 11 arranged in a circumferential array and having arc-shaped slots 11-1. The centers of the arc-shaped slots 11-1 of the plurality of plastic buckles 11 coincide. The annular spray pipe 5-1 is fastened to the plurality of plastic buckles 11, and there is a gap fit between the annular spray pipe 5-1 and the plastic buckles 11.

[0028] like Figure 1 and Figure 2 As shown, a discharge pipe 12 is provided at the bottom of the cylinder 1, and a discharge valve 4 is installed at the lower end of the discharge pipe 12. A drain pipe 13 is provided around the discharge pipe 12, and a first three-way valve 14 is provided on the drain pipe 13. One of the joints of the first three-way valve 14 is used for drainage. A second three-way valve 15 is provided at the water inlet of the water pump 5-5. One of the joints of the second three-way valve 15 is used to connect to the urban water network. A return water pipe 16 is provided between the other joint of the first three-way valve 14 and the other joint of the second three-way valve 15.

[0029] Implementation effect: After the eraser raw material is stirred by the stirring device and discharged, some raw material will remain on the inner wall of the cylinder 1, the stirring shaft 2-2, and the stirring blades 2-3. At this time, the water pump 5-5 drives the spray water along the water inlet hose 5-4, the annular spray pipe 5-1, and the spray head 5-2 to spray and wash the inner wall of the cylinder 1, the stirring shaft 2-2, and the stirring blades 2-3. At the same time, during the spraying process, since the spraying of multiple spray heads 5-2 may have insufficient spraying, the power component 10 adjusts the reciprocating rotation angle of the linkage arm 9 and the annular spray pipe 5-1. The reciprocating rotation angle of the annular spray pipe 5-1 is the included angle between the two spray heads 5-2, thereby achieving comprehensive spraying and washing of the inner wall of the cylinder 1, the stirring shaft 2-2, and the stirring blades 2-3, and improving the cleaning effect.

[0030] The cross-section of the annular rubber sleeve is shaped like a "U" rotated 90 degrees to facilitate installation at the mounting hole 7-3; the inner ring of the annular rubber sleeve abuts against the circumference of the mounting base of the geared motor 2-1 to achieve sealing and vibration reduction. The power assembly 10 includes a power cylinder 10-1 on the top of the upper end cover 7, and a hinged arm 10-2 hinged to the push rod end of the power cylinder 10-1 and the rotating swing arm. During the extension and retraction of the push rod of the power cylinder 10-1, the hinged arm 10-2 drives the linkage arm 9 to swing back and forth, so that the angle of the spray head 5-2 of the annular spray pipe 5-1 changes back and forth to achieve all-round rinsing. By setting multiple plastic buckles 11 with arc-shaped slots 11-1, the annular spray pipe 5-1 is fastened to the multiple plastic buckles 11. The annular spray pipe 5-1 and the plastic buckles 11 are fitted with a clearance, thereby realizing the rotational installation of the annular spray pipe 5-1.

[0031] When the mixing device is installed in the production line, the discharge valve 4 is connected to the subsequent process. At this time, the wastewater generated during the spray cleaning process is discharged by setting up the drain pipe 13 and the first three-way valve 14. Because the residual eraser material has no angle, it will clog the particles of the spray head 5-2. At this time, the return water pipe 16 is set up so that the wastewater in the first spray cleaning process is used for water circulation spraying, which has the effect of saving water resources. The second spraying uses water from the city water network for a second cleaning spray.

[0032] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A mixing device for eraser raw materials, comprising a cylinder (1), a mixing mechanism (2) disposed on the cylinder (1), a feed hopper (3) disposed at the top of the cylinder (1), a discharge valve (4) disposed at the bottom of the cylinder (1), and a spraying mechanism, characterized in that: The stirring mechanism (2) includes a geared motor (2-1) mounted on the cylinder (1), a stirring shaft (2-2) linked to the output shaft of the geared motor (2-1) and located inside the cylinder (1), and stirring blades (2-3) mounted on the stirring shaft (2-2); the upper end of the cylinder (1) is provided with a bracket (6) for mounting the geared motor (2-1) of the stirring mechanism (2), the top of the cylinder (1) is provided with an upper end cover (7), the geared motor (2-1) of the stirring mechanism (2) passes through the upper end cover (7), the upper end cover (7) is provided with a sealing and shock-absorbing component (8) that abuts against the periphery of the lower end of the geared motor (2-1), and the feed hopper (3) is mounted on the upper end cover (7); The edge of the upper end cover (7) is provided with an annular receiving groove (7-1). The spraying mechanism includes an annular spray pipe (5-1) rotatably connected in the annular receiving groove (7-1), multiple spray heads (5-2) arranged in a circumferential array at the bottom of the annular spray pipe (5-1) and extending downward at an angle toward the middle of the lower cylinder (1), a water inlet connector (5-3) provided on the upper end cover (7), a water inlet hose (5-4) provided between the water inlet connector (5-3) and the annular spray pipe (5-1), and a hose provided on the periphery of the cylinder (1). A water pump (5-5) is connected to the water inlet connector (5-3); an arc groove (7-2) is provided on the periphery of the upper end cover (7), and a linkage arm (9) that passes through the arc groove (7-2) is provided on the periphery of the annular spray pipe (5-1). A power component (10) is provided between the upper end cover (7) and the linkage arm (9) to drive the linkage arm (9) to swing back and forth to drive the annular spray pipe (5-1) to rotate back and forth by an angle. The angle of reciprocating rotation of the annular spray pipe (5-1) is the included angle between the two spray heads (5-2).

2. The stirring device for eraser raw materials according to claim 1, characterized in that: The upper end cover (7) is provided with a mounting hole (7-3) through which the geared motor (2-1) passes. The sealing damping component (8) is an annular rubber sleeve fitted inside the mounting hole (7-3). The cross section of the sealing damping component is a "U" shape rotated 90 degrees. The inner ring of the sealing damping component (8) abuts against the periphery of the mounting base of the geared motor (2-1).

3. The stirring device for eraser raw materials according to claim 1, characterized in that: The power assembly (10) includes a power cylinder (10-1) disposed on the top of the upper end cover (7) and a hinge arm (10-2) hinged to the push rod end of the power cylinder (10-1) and the rotating swing arm. During the extension and retraction of the push rod of the power cylinder (10-1), the hinge arm (10-2) drives the linkage arm (9) to swing back and forth.

4. The stirring device for eraser raw materials according to claim 1, characterized in that: The annular receiving groove (7-1) is provided with a plurality of plastic buckles (11) arranged in a circular array and having arc-shaped slots (11-1). The centers of the arc-shaped slots (11-1) of the plurality of plastic buckles (11) coincide. The annular spray pipe (5-1) is fastened to the plurality of plastic buckles (11), and there is a gap fit between the annular spray pipe (5-1) and the plastic buckles (11).

5. The stirring device for eraser raw materials according to claim 1, characterized in that: The bottom of the cylinder (1) is provided with a discharge pipe (12), the discharge valve (4) is installed at the lower end of the discharge pipe (12), the periphery of the discharge pipe (12) is provided with a drain pipe (13), the drain pipe (13) is provided with a first three-way valve (14), one of the joints of the first three-way valve (14) is used for drainage.

6. The stirring device for eraser raw materials according to claim 5, characterized in that: The water pump (5-5) is equipped with a second three-way valve (15) at its inlet end. One of the joints of the second three-way valve (15) is used to connect to the urban water network. A return pipe (16) is provided between the other joint of the first three-way valve (14) and the other joint of the second three-way valve (15).

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