A compression device for waste washing machine metal shell

Abstract

The utility model discloses a kind of waste washing machine metal shell compression devices, the device includes base, the base is provided with compression box, compression box is a side or the square box of opposite pair of side open, multiple compression mechanism is set in compression box, multiple compression mechanism includes transverse compression component and longitudinal compression component, transverse compression component has symmetric distribution two groups, respectively set in the two sides of adjacent side of compression box opening side, longitudinal compression component is set in the upper portion of compression box, transverse compression component includes transverse extrusion plate and the transverse hydraulic cylinder of being set in the rear of transverse extrusion plate, longitudinal compression component includes downward extrusion longitudinal extrusion plate and the longitudinal hydraulic cylinder of being set in the above of longitudinal extrusion plate.The utility model is compressed to waste washing machine metal shell by transverse, longitudinal and rotation three directions simultaneously, compression efficiency is high, the density of compressed metal square is uniform, metal recovery rate is high, easy to operate, effect is remarkable.

Description

Technical Field

[0001] This utility model belongs to the field of waste household appliance recycling technology, and in particular relates to waste washing machines, specifically a waste washing machine metal shell compression device. Background Technology

[0002] Since home appliances often contain various materials such as metals, recycling old home appliances can not only significantly reduce pollution from solid waste that is difficult to degrade and process, but also extract the metal components and other recyclable components, which can then be reused.

[0003] The main reasons for discarding old household appliances, especially washing machines, are often difficult-to-repair electronic or mechanical malfunctions or excessively high repair costs. This means that when discarded, the external structure of the washing machine often remains unchanged. Therefore, the recycling of old washing machines involves a complete disassembly process, removing the major components before processing them separately. For example, the outer casing of an old washing machine will be disassembled, depending on its type, removing the lid, door, panel frame, etc. At most, a few small pieces of plastic that are difficult to remove due to rust, deformation, or breakage will remain on the remaining casing, greatly facilitating subsequent recycling.

[0004] Currently, most discarded washing machines fall into three categories. The first is the old-style twin-tub washing machine. The outer shell of this type is made of either powder-coated galvanized steel or high-strength plastic. The former is very thin, only about 0.5mm thick, and easily corrodes, making it almost worthless for recycling. The latter, made of plastic, also has low recycling value. The other two are the commonly used fully automatic washing machines, divided into top-loading and front-loading types. Top-loading washing machines also generally have high-strength plastic shells with low recycling value. Front-loading washing machines have higher requirements for their shells, mostly made of stainless steel and high-strength aluminum alloy, which have good rigidity, thickness, and weight, giving them good recycling value. Therefore, the shape and structure of the recyclable outer shells obtained from dismantling are relatively fixed, differing only in size. Recycling simply involves compressing the dismantled metal shell into a cube. Overly complex structures not only do not meet practical needs but also lead to complicated operations, causing various problems for normal use. Complex structures also inevitably encroach on the space occupied by the hydraulic system, affecting its workload. However, some existing technologies, such as CN214765675U, can only compress metals in one direction into a disc shape with uneven shape and density, which does not meet the current needs of metal recycling. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model proposes a compression device for the metal outer shell of a waste washing machine, which has a simple structure, is easy to operate, has high compression strength, and good compression effect.

[0006] The technical problem to be solved by this utility model is achieved through the following technical solution:

[0007] A device for compressing the metal casing of a waste washing machine includes a base. In this invention, a compression box is provided on the base. The compression box is a square box with one side or a pair of opposite sides open. A multi-directional compression mechanism is provided inside the compression box. The multi-directional compression mechanism includes a transverse compression component and a longitudinal compression component. There are two symmetrically distributed sets of transverse compression components, which are respectively provided on two adjacent sides of the opening side of the compression box. The longitudinal compression component is provided on the upper part of the compression box. The transverse compression component includes a transverse extrusion plate and a transverse hydraulic cylinder provided behind the transverse extrusion plate. The longitudinal compression component includes a downward extrusion longitudinal extrusion plate and a longitudinal hydraulic cylinder provided above the longitudinal extrusion plate. A support plate for supporting the metal casing of the waste washing machine is provided at the lower part of the compression box.

[0008] In this invention, the left and right sides of the longitudinal extrusion plate are provided with retractable lateral extensions, and the edges of the lateral extensions are provided with rollers that roll in cooperation with the lateral extrusion plate. The lateral extensions extend or retract from the left and right sides of the longitudinal extrusion plate as the lateral extrusion plate moves.

[0009] The pallet is provided with the same transverse extension structure as the longitudinal extrusion plate.

[0010] The left and right openings of the tray or longitudinal extrusion plate are respectively inserted into the openings on their sides and can extend and retract freely. The part of the lateral extension located inside the tray or longitudinal extrusion plate is connected to an elastic device to push the lateral extension outward.

[0011] In this invention, the front and rear side walls of the compression chamber are provided with horizontal slide rails, and the corresponding left and right transverse extrusion plates are provided with slide grooves that cooperate with the slide rails. The transverse extrusion plates slide horizontally along the slide rails under the push of the transverse hydraulic cylinder.

[0012] In this utility model, the center of the pallet is provided with a stepped hole, and a lifting platform is provided in the stepped hole. The lower part of the lifting platform is connected to a vertical rotating shaft, which is driven by a rotary motor through a reduction gearbox. Four positioning grooves are provided at the step of the stepped hole. The four positioning grooves are symmetrically distributed in a cross shape. Correspondingly, the lower part of the lifting platform is provided with positioning protrusions. There are one, two, or four positioning protrusions symmetrically arranged, which match the positions of the positioning grooves.

[0013] A lifting assembly is provided under the support plate. The lifting assembly includes two lifting hydraulic cylinders, which are vertically arranged and symmetrically arranged in front of and behind the rotating shaft. The rotating shaft under the lifting platform is a telescopic transmission shaft.

[0014] The rotary motor is installed inside the motor lifting frame. A motor lifting hydraulic cylinder is installed below the motor lifting frame. A rotating component is installed on the upper part of the motor lifting frame. The rotating component is sleeved onto the lower end of the rotating shaft. The inner wall of the rotating component is rotatably fitted with the rotating shaft. A positioning ring is installed at the lower part of the rotating shaft. The positioning ring and the rotating shaft are an integral structure. The outer diameter of the positioning ring is larger than the inner diameter of the rotating component.

[0015] An infrared sensor is installed inside the stepped hole to identify the position of the positioning protrusion. The infrared sensor is connected to the rotary motor through a processor.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] (1) This application uses a multi-directional compression mechanism to compress the metal shell of the waste washing machine, which can compress simultaneously from the horizontal and vertical directions, so that the metal shell is subjected to uniform pressure in all directions. Compared with the existing single-direction compression method, it can significantly improve the compression efficiency and the density uniformity of the compressed metal block, thereby improving the metal recycling efficiency.

[0018] (2) This application can easily compress the metal shell of the waste washing machine into a square metal block by rotating the metal shell and adjusting the direction of lateral compression. This also reduces the need for hydraulic cylinders and space occupation of the compression device for synchronous compression.

[0019] (3) This application effectively avoids the impact of space occupation between the longitudinal extrusion plate, the transverse extrusion plate and the pallet by setting the transverse extension portion of the longitudinal extrusion plate and the pallet. It can compress the compressed metal block more compactly and smaller, and also prevent metal debris from splashing from the gap between the longitudinal extrusion plate, the transverse extrusion plate and the pallet during the compression process, thereby affecting the normal use of the compression device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this application;

[0021] Figure 2 This is a drawing of the external shape of the object in this application;

[0022] Figure 3 for Figure 1 Schematic diagram of the transverse extension section of the longitudinal extrusion plate;

[0023] Figure 4 for Figure 1 A structural side view of the lifting and rotating components of the center support plate.

[0024] In the diagram: 1. Base; 2. Metal casing of a used washing machine; 3. Compression box; 4. Horizontal extrusion plate; 5. Horizontal hydraulic cylinder; 6. Vertical extrusion plate; 7. Vertical hydraulic cylinder; 8. Horizontal extension section; 9. Support plate; 10. Elastic device; 11. Roller; 12. Lifting hydraulic cylinder; 13. Step hole; 14. Lifting platform; 15. Positioning protrusion; 16. Rotating shaft; 17. Positioning ring; 18. Rotary motor; 19. Rotating component; 20. Motor lifting frame; 21. Motor lifting hydraulic cylinder; 22. Slide rail. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific preferred embodiments, but this does not limit the scope of protection of the present invention.

[0026] Example 1

[0027] A compression device for the metal casing of a waste washing machine, such as Figure 1 and Figure 2 As shown, it includes a base 1, on which a compression box 3 is provided. The compression box 3 is a square box with an open front. The old metal shell 2 of the washing machine to be compressed can be placed in through the front opening, and the compressed metal block can be taken out.

[0028] The compression chamber 3 is equipped with a multi-directional compression mechanism, which includes a transverse compression assembly and a longitudinal compression assembly. There are two symmetrically distributed transverse compression assemblies, which are respectively set on the left and right sides of the compression chamber 3. The transverse compression assembly includes a transverse extrusion plate 4 that is extruding relative to each other and a transverse hydraulic cylinder 5 set behind the transverse extrusion plate 4. The longitudinal compression assembly is set on the upper part of the compression chamber 3, including a longitudinal extrusion plate 6 that is extruding downward and a longitudinal hydraulic cylinder 7 set above the longitudinal extrusion plate 6. The front and rear side walls of the compression chamber 3 are provided with horizontal slide rails 22. The transverse extrusion plates 4 on the corresponding left and right sides are provided with sliding grooves that cooperate with the slide rails 22. The transverse extrusion plates 4 slide horizontally along the slide rails 22 under the push of the transverse hydraulic cylinders 5. The lower part of the compression chamber 3 is provided with a support plate 9 to support the metal shell 2 of the waste washing machine.

[0029] Both the pallet 9 and the longitudinal extrusion plate 6 are provided with retractable lateral extensions 8 on their left and right sides, such as... Figure 3 As shown, the pallet 9 and the longitudinal extrusion plate 6 have openings on the left and right sides. The lateral extension 8 is inserted into the side of the pallet 9 or the longitudinal extrusion plate 6. The portion of the lateral extension 8 located inside the pallet 9 or the longitudinal extrusion plate 6 is provided with an elastic device 10, which pushes the lateral extension 8 to extend outward. The edge of the lateral extension 8 is provided with a roller 11, which rolls with the lateral extrusion plate 4. The lateral extension 8 extends or retracts from the left and right sides of the pallet 9 or the longitudinal extrusion plate 6 as the lateral extrusion plate 4 moves.

[0030] Combination Figure 1 and Figure 4The center of the support plate 9 has a stepped hole 13, and a lifting platform 14 is provided in the stepped hole 13. The lower part of the lifting platform 14 is connected to a vertical rotating shaft 16. The lower part of the rotating shaft 16 is a telescopic sleeve drive shaft, including an outer cylinder and an inner rod. The inner rod is inserted into the outer cylinder. Two positioning grooves are symmetrically arranged on the inner wall of the outer cylinder. Two positioning blocks are provided at the end of the inner rod inserted into the outer cylinder, which are embedded in the positioning grooves. Under the constraint of the positioning blocks and the positioning grooves, the inner rod can freely extend and retract along the outer cylinder, thereby realizing the extension and retraction of the rotating shaft 16.

[0031] Four positioning grooves are provided at the step of the step hole 13. The four positioning grooves are symmetrically distributed in a cross shape. Correspondingly, four positioning protrusions 15 are provided at the lower part of the lifting platform 14. Each of the four positioning protrusions 15 corresponds to one of the positioning grooves. An infrared sensor for identifying the position of the positioning protrusions 15 is provided in the step hole 13. A lifting assembly is provided under the support plate 9. The lifting assembly includes two lifting hydraulic cylinders 12. The two lifting hydraulic cylinders 12 are vertically arranged and symmetrically arranged in front of and behind the rotating shaft 16.

[0032] The lower end of the rotating shaft 16 is connected to the motor shaft of the rotary motor 18. The rotary motor 18 is installed inside the motor lifting frame 20. A motor lifting hydraulic cylinder 21 is provided below the motor lifting frame 20. A rotating component 19 is provided on the upper part of the motor lifting frame 20. The rotating component 19 is sleeved on the lower end of the rotating shaft 16. The inner wall of the rotating component 19 is rotatably engaged with the rotating shaft 16. A positioning ring 17 is provided on the lower part of the rotating shaft 16. The positioning ring 17 and the rotating shaft 16 are an integral structure. The outer diameter of the positioning ring 17 is larger than the inner diameter of the rotating component 19.

[0033] This application is applied to the compression and recycling of waste washing machine metal shells 2. After the waste washing machine metal shells 2 are fed into the compression box 3, they are placed on the tray 9. At this time, the rotating shaft 16 under the tray 9 is in a loosened extended state, the lifting platform 14 is located in the stepped hole 13, and the transverse extensions 8 on both sides of the tray 9 and the longitudinal compression plate 6 extend to their longest state. First, the transverse extrusion plate 4, pushed by the transverse hydraulic cylinder 5, horizontally extrudes the waste washing machine metal casing 2 on the support plate 9. Simultaneously, the longitudinal extrusion plate 6, pushed by the longitudinal hydraulic cylinder 7, descends and extrudes. At this time, the transverse extensions 8 on both sides of the longitudinal extrusion plate 6 and the support plate 9 are compressed and contracted. The pulleys of the transverse extensions 8 on both sides of the longitudinal extrusion plate 6 slide down along the panel of the transverse extrusion plate 4 until they are compressed to a certain extent. Then, the transverse extrusion plate 4 and the longitudinal extrusion plate 6 return to their original positions. Then, the motor lifting hydraulic cylinder 21 pushes the motor lifting frame 20, the rotating shaft 16, and the lifting platform 14 carrying the waste washing machine metal casing 2 to rise. After the lifting platform 14 disengages from the step hole 13, the rotary motor 18 drives the rotating shaft 16 and the lifting platform 14 to rotate. After rotating 90°, the motor lifting hydraulic cylinder 21 descends and returns to its original position. The lifting platform 14 falls into the step hole 13. The transverse extrusion assembly and the longitudinal extrusion assembly extrude again in the aforementioned order, thus completing the first round of compression. The waste washing machine metal casing 2 has been compressed and its volume has decreased. The lifting hydraulic cylinder 12 synchronously lifts the pallet 9, raising the pre-compressed waste washing machine metal shell 2 to a certain height. Then, the first round of compression is repeated to complete the second round of compression, further reducing the volume of the waste washing machine metal shell 2 until it is compressed into a metal block.

[0034] Example 2

[0035] A waste washing machine metal shell compression device, based on embodiment 1, further includes a hydraulic control system. The hydraulic control system includes an oil tank, an oil filter, a hydraulic pump, an oil circuit, and a reversing valve group, a sequence valve, a throttle valve, a check valve, and an accumulator installed on the oil circuit.

[0036] The hydraulic pump is mounted on the base, and its inlet is connected to the oil tank through the suction pipe. The oil filter is installed on the suction pipe, and the outlet of the hydraulic pump is connected to the main oil circuit. A check valve is installed in the main oil circuit.

[0037] The directional valve assembly is integrated and mounted on the valve plate, including a three-position four-way solenoid directional valve and a two-position four-way solenoid directional valve. After the main oil circuit is led out from the hydraulic pump outlet, it is first connected to the oil inlet P of the three-position four-way solenoid directional valve. The two working oil ports A and B of the three-position four-way solenoid directional valve are connected to the rodless chamber and rod chamber of the transverse hydraulic cylinder through pipelines, respectively. The other working oil port A is connected to the rodless chamber of the longitudinal hydraulic cylinder through a pipeline, and port B is connected to the rod chamber of the longitudinal hydraulic cylinder. The oil inlet P of the two-position four-way solenoid directional valve is connected to the main oil circuit, and the working oil ports A and B support the rodless chamber and rod chamber of the hydraulic cylinder, respectively. Its return oil port O is connected to the oil tank.

[0038] A sequence valve is installed between the oil circuits of the lateral and longitudinal hydraulic cylinders, near the pipeline connecting the three-position four-way solenoid directional valve to the longitudinal hydraulic cylinder. Another sequence valve is installed between the reset oil circuits of the lateral and longitudinal hydraulic cylinders and the lifting hydraulic cylinder, near the pipeline connecting the two-position four-way solenoid directional valve to the lifting hydraulic cylinder. Both sequence valves are connected to their respective pipelines via threaded interfaces and are fixed to the valve plate. When the lateral hydraulic cylinder performs lateral compression and the oil circuit pressure reaches the set value, the hydraulic oil in the lateral hydraulic cylinder's oil circuit pushes the valve core of the sequence valve between the lateral and longitudinal hydraulic cylinders to open, allowing hydraulic oil to enter the rodless chamber of the longitudinal hydraulic cylinder, thus achieving the longitudinal compression action of the longitudinal hydraulic cylinder. After the lateral and longitudinal hydraulic cylinders have completed their reset, the oil circuit pressure drops, the sequence valve between the reset oil circuits of the lateral and longitudinal hydraulic cylinders and the lifting hydraulic cylinder's oil circuit closes, and simultaneously, a sequence valve set to a lower pressure opens, allowing hydraulic oil to enter the rodless chamber of the lifting hydraulic cylinder, pushing the piston rod of the lifting hydraulic cylinder upward.

[0039] The throttle valve is installed in the oil line connecting the two-position four-way solenoid directional valve and the rodless chamber of the lifting hydraulic cylinder. When the hydraulic oil flows from the two-position four-way solenoid directional valve to the lifting hydraulic cylinder, it needs to pass through the throttle valve. By adjusting the opening of the throttle valve, the flow rate of hydraulic oil entering the rodless chamber of the lifting hydraulic cylinder is controlled, thereby adjusting the lifting speed of the lifting hydraulic cylinder and realizing a slow and smooth lifting action.

[0040] A check valve is installed between the hydraulic pump outlet and the main oil circuit, near the hydraulic pump outlet. Check valves are also installed in the inlet lines of each hydraulic cylinder to prevent backflow of hydraulic oil during system pressure fluctuations. The check valve at the hydraulic pump outlet ensures that hydraulic oil can only flow from the hydraulic pump to the main oil circuit, preventing backflow from impacting the hydraulic pump. The check valves in the inlet lines of each hydraulic cylinder ensure that hydraulic oil can only enter the corresponding chamber of the hydraulic cylinder, maintaining the stability and reliability of the hydraulic cylinder's operation and preventing abnormal operation caused by backflow.

[0041] The accumulator is installed near the directional valve assembly, fixed to the valve plate by a bracket, and connected to the main oil circuit via pipeline. A shut-off valve is installed in the pipeline to control the charging and discharging of the accumulator. When the system pressure is low, some of the hydraulic oil output from the hydraulic pump enters the accumulator, allowing it to store energy. When the lateral and longitudinal hydraulic cylinders need to be quickly reset, the accumulator releases the stored energy, assisting the hydraulic pump in supplying oil to the rod chambers of the lateral and longitudinal hydraulic cylinders, accelerating the reset speed and improving working efficiency.

[0042] The lifting hydraulic cylinder is controlled by a third three-position four-way solenoid directional valve. Oil port A is connected to the rodless chamber and oil port B is connected to the rod chamber. The return oil line of the lifting hydraulic cylinder is connected to the control oil line of the lifting hydraulic cylinder through a sequence valve to ensure that the lifting hydraulic cylinder can only move after the lifting hydraulic cylinder is reset.

[0043] In summary, based on the above structure and working process, it can be found that the waste washing machine metal shell compression device of this application has high compression efficiency, uniform density of the compressed metal blocks, high metal recovery rate, simple operation, and significant effect.

Claims

1. A device for compressing the metal casing of a used washing machine, comprising a base, characterized in that: The base is equipped with a compression chamber, which is a square chamber with one side or a pair of opposite sides open. A multi-directional compression mechanism is installed inside the compression chamber. The multi-directional compression mechanism includes a transverse compression component and a longitudinal compression component. There are two symmetrically distributed sets of transverse compression components, which are respectively set on two adjacent sides of the opening side of the compression chamber. The longitudinal compression component is set on the upper part of the compression chamber. The transverse compression component includes a transverse extrusion plate and a transverse hydraulic cylinder set behind the transverse extrusion plate. The longitudinal compression component includes a downward extrusion longitudinal extrusion plate and a longitudinal hydraulic cylinder set above the longitudinal extrusion plate. A support plate for supporting the metal shell of the waste washing machine is provided at the lower part of the compression chamber.

2. The apparatus according to claim 1, characterized in that: The longitudinal extrusion plate has retractable lateral extensions on its left and right sides. Rollers are provided on the edges of the lateral extensions, which roll in cooperation with the lateral extrusion plate. The lateral extensions extend or retract from the left and right sides of the longitudinal extrusion plate as the lateral extrusion plate moves.

3. The apparatus according to claim 2, characterized in that: The pallet is provided with the same transverse extension structure as the longitudinal extrusion plate.

4. The apparatus according to claim 3, characterized in that: The left and right openings of the tray or longitudinal extrusion plate are respectively inserted into the openings on their sides and can extend and retract freely. The part of the lateral extension located inside the tray or longitudinal extrusion plate is connected to an elastic device to push the lateral extension outward.

5. The apparatus according to claim 1, characterized in that: The front and rear side walls of the compression chamber are provided with horizontal slide rails, and the corresponding left and right transverse extrusion plates are provided with slide grooves that cooperate with the slide rails. The transverse extrusion plates slide horizontally along the slide rails under the push of the transverse hydraulic cylinder.

6. The apparatus according to claim 5, characterized in that: The pallet has a stepped hole in the center, and a lifting platform is installed in the stepped hole. The lower part of the lifting platform is connected to a vertical rotating shaft, which is driven by a rotary motor through a reduction gearbox. Four positioning grooves are provided at the step of the stepped hole. The four positioning grooves are symmetrically distributed in a cross shape. Correspondingly, the lower part of the lifting platform is provided with positioning protrusions. There are one, two, or four positioning protrusions symmetrically arranged, which match the positions of the positioning grooves.

7. The apparatus according to claim 6, characterized in that: A lifting assembly is provided under the support plate. The lifting assembly includes two lifting hydraulic cylinders, which are vertically arranged and symmetrically arranged in front of and behind the rotating shaft. The rotating shaft under the lifting platform is a telescopic transmission shaft.

8. The apparatus according to claim 7, characterized in that: The rotary motor is installed inside the motor lifting frame. A motor lifting hydraulic cylinder is installed below the motor lifting frame. A rotating component is installed on the upper part of the motor lifting frame. The rotating component is sleeved onto the lower end of the rotating shaft. The inner wall of the rotating component is rotatably fitted with the rotating shaft. A positioning ring is installed at the lower part of the rotating shaft. The positioning ring and the rotating shaft are an integral structure. The outer diameter of the positioning ring is larger than the inner diameter of the rotating component.

9. The apparatus according to claim 6, characterized in that: An infrared sensor is installed inside the stepped hole to identify the position of the positioning protrusion.

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