Foam grinding machine

Abstract

The utility model discloses a foam grinding machine, belongs to the technical field of refrigerator foam recovery, and solves the problem that the foam recovery effect of an existing foam recovery device is limited. The grinding machine comprises a bracket, a grinding machine main body and a negative pressure recovery wind scoop, a platform is arranged on the bracket; the grinding machine main body comprises a charging barrel fixed on the upper surface of the platform, a feeding shaft is rotationally arranged in the charging barrel, an inner rubbing plate is fixed on the feeding shaft, and an outer rubbing plate is fixed on the inner wall of the charging barrel; the negative pressure recovery wind scoop is used for classifying foam and plastic. Compared with a foam recovery device which only knocks and separates mixed fragments of foam and plastic in a serpentine channel in the prior art, the foam recovery device has the advantages that the foam is ground through the inner washboard and the outer washboard, so that the volume of the foam is further reduced, the weight difference between the foam and the plastic is increased, finally, the foam is recovered through the negative pressure recovery wind scoop, and the foam recovery efficiency is improved. And the recovery amount and the recovery purity of the foam and the plastic are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerator foam recycling, in particular to a foam grinding machine. Background Art

[0002] Foam is widely used in refrigerators. Foam usually contains ozone-depleting substances such as Freon. If it is discarded or handled improperly, it may cause environmental pollution. Therefore, dismantling the discarded refrigerators and recycling the foam can reduce the negative impact on the environment. By recycling it, it can be reused and the production of new materials can be reduced, thus saving energy and reducing carbon emissions.

[0003] In the existing foam recycling device, foam and plastic are not classified and recycled, foam and plastic are seriously mixed with each other, and foam and plastic cannot be effectively separated and recycled, and the recycled foam has low purity. In order to solve the above problems, a Chinese patent with announcement number CN214871970U discloses a waste refrigerator foam wind selection plastic recycling system, including a spiral feeder, a magnetic separator, and a wind separator. The outlet of the wind separator has a serpentine channel, the outlet of the wind separator is connected to one side of the serpentine channel, the top of the serpentine channel is connected to one end of the cotton outlet pipe, and the other end of the cotton outlet pipe is connected to the air inlet of the negative pressure fan. The bottom end of the serpentine channel is connected to a V-shaped hopper, and the bottom end of the V-shaped hopper is connected to a temporary storage box. The bottom side wall of the temporary storage box has a discharge port, and a lifting door is provided on the outside of the discharge port. A belt conveyor is provided below the discharge port, and the unloading end of the belt conveyor is connected to the inlet of the spiral feeder.

[0004] The foam wind uses a plastic recovery system to separate the mixed foam and plastic fragments in the serpentine channel, thereby improving the purity of the screened foam. However, since the mixed foam and plastic fragments are not ground, the foam fragments are relatively large, and the negative pressure fan has limited effect on the recovery of larger foam fragments, and foam fragments will still remain in the plastic fragments. Utility Model Content

[0005] In view of the above problems in the prior art, the utility model provides a foam grinding machine, which solves the problem that the existing foam recycling device has limited effect on foam recycling.

[0006] A foam grinder is provided, comprising: a bracket, on which a platform is arranged; a grinder body, the grinder body comprising a barrel fixed on the upper surface of the platform, a feeding shaft rotatably arranged in the barrel, an inner rubbing plate fixed on the feeding shaft, an outer rubbing plate fixed on the inner wall of the barrel, the feeding shaft being used to feed the foam mixture in the barrel into the gap between the inner rubbing plate and the outer rubbing plate for grinding; a negative pressure recovery scoop, the negative pressure recovery scoop being used to classify foam and plastic, the negative pressure recovery scoop being fixed on the lower surface of the platform and connected to the barrel.

[0007] The working principle of this scheme is that the block foam mixture with plastic is put into the barrel, and the feeding shaft conveys the foam mixture to the gap between the inner washboard and the outer washboard. At the same time, the feeding shaft drives the inner washboard to rotate relative to the outer washboard. The foam in the foam mixture is relatively loose in structure and consists of many bubbles. It is easy to be broken into foam particles under the mechanical force of the inner washboard and the outer washboard; while the plastic in the foam mixture has a higher density and strength. Therefore, under the same grinding conditions, the plastic is not ground into particles like the foam, so the plastic is still in block shape. The block plastic and foam particles enter the negative pressure recovery wind bucket. The weight of the foam particles is much less than that of the block plastic. The negative pressure recovery wind bucket can obtain foam particles with higher purity through negative pressure. Compared with the existing foam recovery device that only separates the mixed fragments of foam and plastic by collision in the serpentine channel, this scheme uses the inner washboard and the outer washboard to further reduce the volume of the foam, increase the weight difference between the foam and the plastic, and improve the recovery amount and recovery purity of the foam and plastic.

[0008] Furthermore, a feed pipe and a motor are arranged on the top surface of the barrel, and the output shaft of the motor is connected to the feed shaft by belt transmission. The belt transmission can absorb a certain degree of impact and load variation, which is conducive to extending the life of the grinding machine body.

[0009] Furthermore, a support is provided on the top surface of the barrel, a motor is vertically fixed on the support, a main pulley is provided on the output shaft of the motor, a slave pulley is fixed on the feeding shaft, and the main pulley and the slave pulley are connected by a belt.

[0010] Furthermore, the feeding shaft is conical, the small diameter end of the feeding shaft located outside the barrel is connected to the motor, and a spiral blade is arranged on the outer wall of the feeding shaft. The conical shape design can effectively and evenly distribute the foam mixture, so that the foam mixture is not easy to accumulate or clog during the feeding process. The presence of the spiral blade can further push the foam mixture downward to ensure continuous and uniform feeding.

[0011] Furthermore, the inner rubbing plate and the outer rubbing plate are respectively an outer gear ring structure and an inner gear ring structure, and the inner rubbing plate is fixed on the large diameter end of the feeding shaft.

[0012] Furthermore, the outer gear on the inner washboard and the inner gear on the outer washboard are both helical gears. The setting of the helical gears enables the foam mixture to move to the negative pressure recovery hopper after grinding.

[0013] Further, the inner washboard and the outer washboard respectively include a plurality of outer gear ring pieces and inner gear ring pieces, each outer gear ring piece and each inner gear ring piece are provided with at least two connection holes, each outer gear ring piece and each inner gear ring piece are respectively connected with the feed shaft and the barrel by bolts through the connection holes. The arrangement of the plurality of outer gear ring pieces and the inner gear ring pieces are respectively fixed on the feed shaft and the barrel by bolt connection for easy installation and disassembly.

[0014] Furthermore, four observation windows are evenly arranged on the outer wall of the barrel in the circumferential direction, so that workers can easily view the internal structure of the barrel.

[0015] Furthermore, the support is a four-corner support structure, and a staircase for the same-direction platform is arranged on the support, and the staircase is arranged to facilitate workers to go up to the platform.

[0016] Furthermore, a plastic recovery port is provided at the bottom of the negative pressure recovery hopper, and a foam recovery pipe for recovering foam by negative pressure is obliquely provided on the side wall of the negative pressure recovery hopper.

[0017] The utility model discloses a foam grinding machine, which has the following beneficial effects:

[0018] Compared with the existing foam recovery device which only separates the mixed foam and plastic fragments by collision in the serpentine channel, the utility model adopts inner and outer rubbing plates to grind the foam, which further reduces the volume of the foam and increases the weight difference between the foam and the plastic. Finally, the foam and plastic are recovered through the negative pressure recovery scoop, which improves the recovery amount and recovery purity of the foam and plastic. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a foam grinding machine;

[0020] Figure 2 It is a three-dimensional diagram of a foam grinding machine;

[0021] Figure 3 This is a component diagram of the inner washboard;

[0022] Figure 4 This is a component diagram of the outer washboard;

[0023] Among them: 1. Motor; 2. Support; 3. Slave pulley; 4. Bearing seat; 5. Top plate; 6. Feed shaft; 7. Barrel; 8. Grinding machine body; 9. Inner rubbing board; 10. Outer rubbing board; 11. Bracket; 12. Conical barrel; 13. Connecting plate; 14. Conical bucket; 15. Negative pressure recovery scoop; 16. Foam recovery pipe; 17. Protective cover; 18. Feed pipe; 19. Guardrail; 20. Platform; 21. Stairs. DETAILED DESCRIPTION

[0024] The specific implementation methods of the utility model are described below to facilitate technical personnel in this technical field to understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific implementation methods. For ordinary technical personnel in this technical field, as long as various changes are within the spirit and scope of the utility model defined and determined by the attached claims, these changes are obvious, and all utility model creations using the concept of the utility model are protected.

[0025] In the prior art, general foam recycling devices do not classify foam and plastic for recycling. Even if the mixed fragments of foam and plastic are separated by collision in a serpentine channel and the foam fragments are sucked away by a negative pressure fan, the foam fragments are relatively large because the mixed fragments of foam and plastic are not ground, resulting in the problem of limited foam recycling effect.

[0026] In order to solve the problem of limited foam recovery effect of the foam recovery device in the prior art, the present application grinds the foam mixture through the inner rubbing plate 9 and the outer rubbing plate 10, thereby further reducing the volume of the foam therein and increasing the weight difference between the foam and the plastic. Finally, it is recovered through the negative pressure recovery wind bucket 15, thereby achieving the technical effect of increasing the recovery amount and recovery purity of the foam and plastic.

[0027] Specifically, refer to Figure 1 and Figure 2 This embodiment provides a foam grinder, including a bracket 11, a grinder body 8 and a negative pressure recovery scoop 15.

[0028] A platform 20 is arranged on the bracket 11, and the bracket 11 is a four-corner bracket structure, and a staircase 21 for the same-direction platform 20 is arranged on the bracket 11. The staircase 21 is arranged to facilitate workers to go up and down the platform 20. Guardrails 19 are arranged on the edges of the platform 20.

[0029] The grinding machine body 8 includes a barrel 7 fixed on the upper surface of the platform 20, and four observation windows are evenly opened along the circumferential direction on the outer wall of the barrel 7. The arrangement of the observation windows facilitates workers to view the internal structure of the barrel 7.

[0030] A feeding shaft 6 is rotatably arranged in the barrel 7, an inner rubbing board 9 is fixed on the feeding shaft 6, and an outer rubbing board 10 is fixed on the inner wall of the barrel 7. The feeding shaft 6 is used to feed the foam mixture in the barrel 7 into the gap between the inner rubbing board 9 and the outer rubbing board 10 for grinding.

[0031] The negative pressure recovery hopper 15 is used to classify foam and plastic. The negative pressure recovery hopper 15 is fixed on the lower surface of the platform 20, and the negative pressure recovery hopper 15 includes a cone hopper 14, and the top of the cone hopper 14 is connected to the barrel 7. A plastic recovery port is provided at the bottom of the negative pressure recovery hopper 15, and a foam recovery pipe 16 for recovering foam by negative pressure is obliquely provided on the side wall of the negative pressure recovery hopper 15. A fan for forming negative pressure is provided in the negative pressure recovery hopper 15. In order to facilitate the connection between the negative pressure recovery hopper 15 and the barrel 7, a conical barrel 12 is fixed on the feed port of the cone hopper 14, and the large diameter end of the cone barrel 12 is fixed on the platform 20 and is used to connect to the bottom end of the barrel 7. The cone barrel 12 includes a plurality of isosceles trapezoidal connecting plates 13, and the adjacent edges between the plurality of connecting plates 13 are welded.

[0032] As a specific structure in which the feed shaft 6 is rotatably arranged in the barrel 7, a feed pipe 18 and a motor 1 are arranged on the top plate 5 of the barrel 7, and the output shaft of the motor 1 is connected with the feed shaft 6 by belt transmission. The belt transmission can absorb a certain degree of impact and load changes, which is conducive to extending the life of the grinding machine body 8.

[0033] In the specific belt transmission structure, a support 2 is provided on the top plate 5 of the barrel 7, a motor 1 is vertically fixed on the support 2, a main pulley is provided on the output shaft of the motor 1, a feed shaft 6 is rotatably provided in the barrel 7 through two bearing seats 4 respectively located on the top plate 5 and the platform 20, the upper end of the feed shaft 6 passes through the bearing seat 4 on the barrel 7 and is fixedly connected to the slave pulley 3, and the main pulley and the slave pulley 3 are connected by a belt. The diameter of the slave pulley 3 is larger than that of the main pulley, and in order to protect the slave pulley 3, a protective cover 17 is provided on the top plate 5 of the barrel 7.

[0034] In this embodiment, the bearing in the bearing seat 4 is a double-row self-aligning bearing, which is helpful in dealing with the deflection or axial deviation of the bearing and the shaft, can self-adjust, reduce the vibration and noise caused by deviation, and protect the life of the belt drive structure.

[0035] In order to allow the foam mixture to continuously enter the gap between the inner washboard 9 and the outer washboard 10, the feeding shaft 6 is conical, and the small diameter end of the feeding shaft 6 located outside the barrel 7 is connected to the motor 1, and a spiral blade is provided on the outer wall of the feeding shaft 6. The conical shape design can effectively and evenly distribute the foam mixture, so that the foam mixture is not easy to accumulate or block during the feeding process. The presence of the spiral blade can further push the foam mixture downward to ensure continuous and uniform feeding.

[0036] In order to move the foam mixture to the negative pressure recovery scoop 15 after grinding, the inner washboard 9 and the outer washboard 10 are respectively an outer gear ring structure and an inner gear ring structure, and the inner washboard 9 is fixed on the large diameter end of the feed shaft 6. The outer gear on the inner washboard 9 and the inner gear on the outer washboard 10 are both helical gears.

[0037] In order to facilitate the installation and removal of the inner washboard 9 and the outer washboard 10, refer to Figure 3 and Figure 4 The inner rubbing plate 9 and the outer rubbing plate 10 respectively include multiple outer gear ring plates and inner gear ring plates, each outer gear ring plate and each inner gear ring plate are provided with at least two connecting holes, and each outer gear ring plate and each inner gear ring plate are respectively bolted to the feeding shaft 6 and the barrel 7 through the connecting holes.

[0038] In summary, the working principle of this solution is:

[0039] By putting the block foam mixture with plastic into the barrel 7, the feeding shaft 6 conveys the foam mixture to the gap between the inner washboard 9 and the outer washboard 10, and at the same time, the feeding shaft 6 drives the inner washboard 9 to rotate relative to the outer washboard 10. The foam in the foam mixture is relatively loose in structure and consists of many bubbles, which can be easily broken into foam particles under the mechanical force of the inner washboard 9 and the outer washboard 10. The plastic in the foam mixture has a higher density and strength. Therefore, under the same grinding conditions, the plastic is not ground into particles like the foam, so the plastic is still in block shape. The block plastic and foam particles enter the negative pressure recovery hopper 15. The weight of the foam particles is much less than that of the block plastic. The negative pressure recovery hopper 15 can obtain foam particles with higher purity through negative pressure.

[0040] Compared with the existing foam recovery device which only separates the mixed foam and plastic fragments by collision in the serpentine channel, the present solution adopts the inner washboard 9 and the outer washboard 10 to further reduce the volume of the foam, increase the weight difference between the foam and the plastic, and improve the recovery amount and purity of the foam and plastic.

[0041] Although the specific implementation of the utility model is described in detail in conjunction with the drawings, it should not be understood as limiting the scope of protection of this patent. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still fall within the scope of protection of this patent.

Claims

1. A foam grinding machine, characterized in that: include: A support (11), wherein a platform (20) is provided on the support (11); A grinding machine body (8), the grinding machine body (8) comprising a barrel (7) fixed on the upper surface of the platform (20), a feeding shaft (6) rotatably arranged in the barrel (7), an inner rubbing plate (9) fixed on the feeding shaft (6), an outer rubbing plate (10) fixed on the inner wall of the barrel (7), the feeding shaft (6) being used to feed the foam mixture in the barrel (7) into the gap between the inner rubbing plate (9) and the outer rubbing plate (10) for grinding; A negative pressure recovery hopper (15) is used to classify foam and plastic. The negative pressure recovery hopper (15) is fixed on the lower surface of the platform (20) and is connected to the barrel (7).

2. The foam grinding machine according to claim 1, characterized in that: A feed pipe (18) and a motor (1) are arranged on the top surface of the barrel (7), and an output shaft of the motor (1) is connected to the feed shaft (6) by belt transmission.

3. The foam grinding machine according to claim 2, characterized in that: The top surface of the barrel (7) is provided with a support (2), the motor (1) is vertically fixed on the support (2), the output shaft of the motor (1) is provided with a main pulley, and the feed shaft (6) is fixed with a slave pulley (3), and the main pulley and the slave pulley (3) are connected by a belt.

4. The foam grinding machine according to claim 2, characterized in that: The feeding shaft (6) is conical in shape, and the small-diameter end of the feeding shaft (6) located outside the barrel (7) is connected to the motor (1), and spiral blades are arranged on the outer wall of the feeding shaft (6).

5. The foam grinding machine according to claim 4, characterized in that: The inner rubbing plate (9) and the outer rubbing plate (10) are respectively an outer gear ring structure and an inner gear ring structure, and the inner rubbing plate (9) is fixed on the large diameter end of the feeding shaft (6).

6. The foam grinding machine according to claim 5, characterized in that: The external gear on the inner washboard (9) and the internal gear on the outer washboard (10) are both helical gears.

7. The foam grinding machine according to claim 6, characterized in that: The inner rubbing plate (9) and the outer rubbing plate (10) respectively include a plurality of outer gear ring plates and inner gear ring plates, each of the outer gear ring plates and each of the inner gear ring plates is provided with at least two connecting holes, and each of the outer gear ring plates and each of the inner gear ring plates are respectively bolted to the feed shaft (6) and the barrel (7) through the connecting holes.

8. The foam grinding machine according to claim 1, characterized in that: Four observation windows are evenly arranged on the outer wall of the barrel (7) along the circumferential direction.

9. The foam grinding machine according to claim 1, characterized in that: The support (11) is a four-corner support structure, and a staircase (21) leading to the platform (20) is provided on the support (11).

10. The foam grinding machine according to claim 1, characterized in that: A plastic recovery port is provided at the bottom of the negative pressure recovery hopper (15), and a foam recovery pipe (16) for recovering foam by negative pressure is obliquely provided on the side wall of the negative pressure recovery hopper (15).

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