Engineering plastic crushing device

Abstract

The invention discloses an engineering plastic crushing device, which relates to the technical field of crushing devices, and comprises a crushing frame, a feeding device and a crushing device, wherein a feeding frame is fixedly installed on the top of the crushing frame, an arc panel is fixedly installed on the surface of the feeding frame, a discharge hole is opened on the surface of the crushing frame, a control panel is slidably installed on the surface of the crushing frame, a dust collecting device is fixedly installed on the surface of the control panel, wherein the feeding device comprises a feeding hole, a sliding block, a rotating plate, a feeding plate, a displacement plate, a load-bearing rod and a supporting rod, after the limit of the feeding plate is released, it is squeezed by the plastic on the top to generate rotation, the feeding plate rotates to release the seal of the feeding frame, after the seal of the feeding frame is released, the quantitative plastic on the top of the feeding plate enters the crushing frame through the feeding frame to be crushed, and the quantitative feeding can prevent too much or insufficient plastic from entering the crushing device, reduce the load and wear of the equipment, and extend the service life of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of pulverizing devices, in particular to an engineering plastic pulverizing device. Background Art

[0002] The engineering plastic crushing device usually consists of a feed inlet, a crushing chamber, a discharge port, a transmission system and a screen.

[0003] The patent with the patent announcement number CN208930531U relates to an engineering plastic crushing device, including a shock-absorbing base, a placement slot is provided on the top of the shock-absorbing base, a crushing box set as a hollow structure is placed in the placement slot, and a limit slide slot is provided on the inner walls on both sides of the placement slot, and the two limit slide slots are slidably installed with the same limit slide bar, the top of the limit slide bar is fixedly connected to the top of the crushing box, and the limit slide bar is provided with two limit through holes, and a fixed rod is slidably installed in the two limit through holes, and the top and bottom ends of the fixed rod are respectively fixedly connected to the top inner wall and the bottom inner wall of the corresponding limit slide slot, and the bottom of the limit slide bar is fixedly installed with a limit spring sleeved on the outside of the fixed rod. The patent is easy to operate, can quickly and conveniently crush the plastic waste in the crushing box, and the crushing box is buffered and damped during crushing, which improves the quality of crushing and meets people's needs.

[0004] In the above patent, a limit spring sleeved on the outside of the fixed rod is fixedly installed at the bottom of the limit slide rod, so that the device can quickly and conveniently crush the plastic waste in the crushing box, and buffer and reduce shock to the crushing box during crushing, thereby improving the quality of crushing. However, it is difficult to feed the crushing device quantitatively. Feeding too fast or too much material will cause the crusher to overload, accelerate equipment wear, and increase maintenance costs. Moreover, when too much material is fed, the size and shape of the crushed plastic particles will be inconsistent, making it difficult to achieve the expected crushing effect. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an engineering plastic crushing device, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an engineering plastic crushing device, comprising a crushing frame, a feeding device and a crushing device, wherein a feeding frame is fixedly installed on the top of the crushing frame, an arc panel is fixedly installed on the surface of the feed frame, a discharge hole is opened on the surface of the crushing frame, a control panel is slidably installed on the surface of the crushing frame, and a dust collecting device is fixedly installed on the surface of the control panel, wherein the feeding device comprises a feeding hole, a slider, a rotating plate, a feeding plate, a displacement plate, a load-bearing rod and a support rod, after the limit of the feed plate is released, it is squeezed by the plastic on the top to produce rotation, the feed plate rotates to release the seal of the feed frame, after the seal of the feed frame is released, the quantitative plastic on the top of the feed plate enters the crushing frame through the feed frame for crushing, the feed frame surface is opened with a feeding hole, the slider is slidably installed on the inner wall of the feed frame, the rotating plate is rotatably installed on the surface of the slider, the feed plate is fixedly installed on the surface of the rotating plate, the displacement plate is slidably installed on the inner wall of the feed frame, the load-bearing rod slides through the surface of the displacement plate, and the support rod is fixedly installed on the top of the load-bearing rod.

[0007] According to the above technical solution, a No. 1 spring is arranged between the slider and the feed frame, a No. 2 spring is arranged between the slider and the rotating plate, a No. 3 spring is arranged between the displacement plate and the feed frame, and a No. 4 spring is arranged between the displacement plate and the load-bearing rod. The support rod is in contact with the bottom of the feed plate, and the rotating plate rotates and resets to drive the feed plate to reset, and the feed plate resets to restore the seal of the feed frame.

[0008] According to the above technical solution, the crushing device includes a shaking plate, a motor, a driving rod, an extrusion block, an L-shaped rod, a crushing device and a concentration frame. The extrusion block moves downward to drive the shaking plate and the driving rod to move downward. The driving rod moves downward to drive the crushing device to move downward. The shaking plate is slidably installed on the surface of the crushing frame. The motor is fixedly installed on the surface of the shaking plate. The driving rod is fixedly installed on the output end of the motor. The extrusion block is fixedly installed on the circumferential surface of the driving rod. The L-shaped rod is fixedly installed on the surface of the crushing frame. The crushing device is arranged on the circumferential surface of the driving rod. The concentration frame is slidably installed on the inner wall of the crushing frame. The driving rod is in contact with the concentration frame.

[0009] According to the above technical solution, a protective rod is rotatably installed on the inner wall of the crushing frame, a protective plate is fixedly installed on the circumferential surface of the protective rod, a No. 5 spring is arranged between the protective rod and the crushing frame, a No. 6 spring is arranged between the shaking plate and the crushing frame, and the driving rod passes through the inner and outer walls of the concentrated frame. Part of the offset large pieces of plastic will hit the protective plate to cause rotation, and the rotation of the protective plate drives the protective rod to rotate.

[0010] According to the above technical scheme, it also includes a discharging device and an adjusting device, the discharging device includes a discharging rod, a discharging plate, a spring plate, a protrusion and a linkage plate, the downward movement of the concentrated frame drives the linkage plate to move downward, the downward movement of the linkage plate drives the contact with the top of the discharging plate and squeezes the discharging plate to move downward, the discharging rod is fixedly installed at the bottom of the inner wall of the crushing frame, the discharging plate is slidably installed on the circumferential surface of the discharging rod, a sliding groove is opened on the surface of the discharging plate, the spring plate is slidably installed on the inner wall of the sliding groove, the protrusion is fixedly installed on the inner wall of the crushing frame, and the linkage plate is fixedly installed on the bottom of the concentrated frame.

[0011] According to the above technical solution, a No. 7 spring is arranged between the discharging rod and the discharging plate, a No. 8 spring is arranged between the spring plate and the slide groove, the linkage plate contacts the top of the discharging plate, and the vibration of the spring plate drives the discharging plate to resonate together.

[0012] According to the above technical solution, the adjusting device includes an adjusting rod, a button, a protective frame, a protective plate and a fixed rod. After the limit of the control panel is released, the control panel is manually pulled to move, and the size of the discharge port is adjusted by pulling the control panel to move. The adjusting rod slides through the surface of the control panel, and an adjustment hole is opened on the surface of the crushing frame. The button is fixedly installed on the top of the dust collecting device, the protective frame is fixedly installed on the top of the dust collecting device, the protective plate is slidably installed on the top of the inner wall of the protective frame, and the fixed rod is fixedly installed on the surface of the crushing frame.

[0013] According to the above technical solution, the button is electrically connected to the dust collecting device, a No. 9 spring is arranged between the adjusting rod and the control panel, the adjusting rod is in contact with the adjusting hole, and the button is pressed by the protective plate to drive the dust collecting device to operate at maximum power to absorb dust.

[0014] The present invention provides an engineering plastic crushing device, which has the following beneficial effects:

[0015] (1) The engineering plastic crushing device releases the seal of the feed frame by rotating the feed plate. After the seal of the feed frame is released, the quantitative plastic on the top of the feed plate enters the crushing frame through the feed frame for crushing. The quantitative feeding can prevent excessive or insufficient plastic from entering the crushing device, reduce the load and wear of the equipment, extend the service life of the equipment, ensure that the size and shape of the crushed plastic particles are consistent, and achieve the expected crushing effect. At the same time, the feed plate is reset to restore the seal of the feed frame. The sealed feed frame can effectively prevent dust from flying during the crushing process, reduce dust pollution in the workplace, improve the cleanliness of the working environment, and reduce the risk of operators being exposed to harmful gases and dust.

[0016] (2) In the engineering plastic crushing device, the extrusion block moves downward, driving the shaking plate and the driving rod to move downward, and the driving rod moves downward, driving the crushing device to move downward. The up and down shaking can make the plastic particles contact and collide with the crushing tool more frequently, accelerating the plastic crushing process. The up and down shaking can prevent the plastic from gathering in the equipment to form a blockage, keeping the equipment unobstructed. At the same time, the protective rod and the protective plate guide the large pieces of plastic that are offset under the elastic force of the No. 5 spring. Large pieces of engineering plastic directly hit the crushing device, which may cause damage to the equipment, damage the blades or other key components. Taking shielding measures can reduce the impact on the crushing equipment, extend the service life of the crushing equipment, and reduce maintenance costs.

[0017] (3) In the engineering plastic crushing device, the linkage plate moves downward to contact with the top of the discharge plate and squeeze the discharge plate to move downward. The up and down shaking can help the material to be discharged more quickly at the discharge port. Especially for the crushed plastic, the shaking can effectively promote the discharge and improve the production efficiency. At the same time, the downward movement of the discharge plate drives the spring plate to move. The movement of the spring plate contacts and rubs with the protrusion to generate vibration. The vibration of the spring plate drives the discharge plate to resonate together. The resonance can increase the amplitude and frequency of the discharge plate, thereby increasing the discharge efficiency of the plastic particles at the discharge port, making the plastic particles more quickly discharged from the discharge port, further improving the discharge efficiency.

[0018] (4) For the engineering plastic crushing device, after the limit of the control panel is released, the control panel is manually pulled to move. The size of the discharge port can be adjusted by pulling the control panel to move. By adjusting the size of the discharge port, the material flow in the production process can be optimized, blockage and accumulation of materials can be avoided, the stable operation of the equipment can be ensured, and the discharge efficiency can be improved. At the same time, the protective plate moves away from the crushing frame to press the button. The button is pressed by the protective plate to drive the dust collection device to operate at maximum power to absorb dust. When the discharge port is adjusted to the maximum, more dust may be generated. If the dust collection device is not sufficient to cope with the additional dust, it will cause dust leakage. Therefore, the linkage to open the dust collection device to the maximum can effectively prevent dust leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the position structure of the rotating plate and the feed plate of the present invention;

[0021] Figure 3 This is a schematic diagram of the position structure of the protection rod and the protection plate of the present invention;

[0022] Figure 4 This is a schematic diagram of the position structure of the slider and the rotating plate of the present invention;

[0023] Figure 5For the present invention Figure 4 A schematic diagram of the structure enlargement of part A;

[0024] Figure 6 For the present invention Figure 2 A schematic diagram of the structure of part B in the middle is enlarged;

[0025] Figure 7 For the present invention Figure 3 Schematic diagram of the enlarged structure of part C in the middle.

[0026] In the figure: 1. crushing frame; 2. feeding frame; 3. arc panel; 4. control panel; 5. feeding hole; 6. slider; 7. rotating plate; 8. feeding plate; 9. displacement plate; 10. load-bearing rod; 11. supporting rod; 12. dust collecting device; 131. shaking plate; 132. motor; 133. driving rod; 134. extrusion block; 135. L-shaped rod; 136. crushing equipment; 137. central frame; 138. protection rod; 139. protection plate; 141. discharging rod; 142. discharging plate; 143. spring plate; 144. bump; 145. linkage plate; 151. adjusting rod; 152. button; 153. protection frame; 154. protection plate; 155. fixing rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-5 , one embodiment of the present invention is: an engineering plastic crushing device, comprising a crushing frame 1, a feeding device and a crushing device, wherein a feeding frame 2 is fixedly installed on the top of the crushing frame 1, an arc panel 3 is fixedly installed on the surface of the feeding frame 2, a discharge hole is opened on the surface of the crushing frame 1, a control panel 4 is slidably installed on the surface of the crushing frame 1, and a dust collecting device 12 is fixedly installed on the surface of the control panel 4, wherein the feeding device comprises a feeding hole 5, a slider 6, a rotating plate 7, a feeding plate 8, a displacement plate 9, a load-bearing rod 10 and a support rod 11, a feeding hole 5 is opened on the surface of the feeding frame 2, the slider 6 is slidably installed on the inner wall of the feeding frame 2, the rotating plate 7 is rotatably installed on the surface of the slider 6, the feeding plate 8 is fixedly installed on the surface of the rotating plate 7, the displacement plate 9 is slidably installed on the inner wall of the feeding frame 2, the load-bearing rod 10 slides through the surface of the displacement plate 9, and the support rod 11 is fixedly installed on the top of the load-bearing rod 10, quantitative feeding can prevent too much or insufficient plastic from entering the crushing device, reduce the load and wear of the equipment, extend the service life of the equipment, ensure that the size and shape of the crushed plastic particles are consistent, and achieve the expected crushing effect.

[0029] A No. 1 spring is arranged between the slider 6 and the feed frame 2, a No. 2 spring is arranged between the slider 6 and the rotating plate 7, a No. 3 spring is arranged between the displacement plate 9 and the feed frame 2, a No. 4 spring is arranged between the displacement plate 9 and the load-bearing rod 10, the support rod 11 is in contact with the bottom of the feed plate 8, the No. 2 spring can drive the rotating plate 7 to reset, and the sealed feed frame 2 can effectively prevent dust from flying during the crushing process, reduce dust pollution in the workplace, and improve the cleanliness of the working environment.

[0030] The crushing device includes a shaking plate 131, a motor 132, a driving rod 133, an extrusion block 134, an L-shaped rod 135, a crushing device 136 and a concentration frame 137. The shaking plate 131 is slidably mounted on the surface of the crushing frame 1, the motor 132 is fixedly mounted on the surface of the shaking plate 131, the driving rod 133 is fixedly mounted on the output end of the motor 132, the extrusion block 134 is fixedly mounted on the circumferential surface of the driving rod 133, the L-shaped rod 135 is fixedly mounted on the surface of the crushing frame 1, the crushing device 136 is arranged on the circumferential surface of the driving rod 133, the concentration frame 137 is slidably mounted on the inner wall of the crushing frame 1, the driving rod 133 is in contact with the concentration frame 137, and the up and down shaking can make the plastic particles contact and collide with the crushing tool more frequently, thereby accelerating the crushing process of the plastic.

[0031] A protective rod 138 is rotatably installed on the inner wall of the crushing frame 1, and a protective plate 139 is fixedly installed on the circumferential surface of the protective rod 138. A No. 5 spring is arranged between the protective rod 138 and the crushing frame 1, and a No. 6 spring is arranged between the shaking plate 131 and the crushing frame 1. The driving rod 133 passes through the inner and outer walls of the central frame 137. The No. 5 spring can drive the protective rod 138 to reset. Large pieces of engineering plastics directly hitting the crushing equipment 136 may cause damage to the equipment, damage the blades or other key components, and taking shielding measures can reduce the impact on the crushing equipment 136.

[0032] When the present embodiment is working, the plastic to be crushed is put into the top of the feed plate 8 through the arc panel 3, and the plastic accumulated on the top of the feed plate 8 squeezes the feed plate 8 to move downward under the action of its own gravity, and the feed plate 8 moves downward to squeeze the support rod 11 to move downward, and the support rod 11 moves downward to drive the load-bearing rod 10 to move, and the load-bearing rod 10 moves to drive the displacement plate 9 to move, and when the load-bearing rod 10 moves and contacts the feed hole 5, the load-bearing rod 10 moves obliquely downward in the direction away from the feed plate 8 and contacts the inner wall of the feed hole 5, and the load-bearing rod 10 moves obliquely downward to drive the support rod 11 to move, and the displacement plate 9 moves. The rod 11 moves to release the limit on the feed plate 8. After the limit on the feed plate 8 is released, it is squeezed by the plastic on the top and rotates. The feed plate 8 rotates to release the seal of the feed frame 2. After the seal of the feed frame 2 is released, the quantitative plastic on the top of the feed plate 8 enters the crushing frame 1 through the feed frame 2 for crushing. At the same time, after the quantitative plastic on the top of the feed plate 8 enters the crushing frame 1 through the feed frame 2 for crushing, the rotating plate 7 rotates and resets under the elastic force of the No. 2 spring. The rotating plate 7 rotates and resets to drive the feed plate 8 to reset. The feed plate 8 resets to restore the seal on the feed frame 2.

[0033] The quantitative plastic on the top of the feed plate 8 passes through the feed frame 2 and enters the crushing frame 1. The motor 132 drives the driving rod 133 to rotate. The driving rod 133 rotates and drives the crushing device 136 to rotate to crush the crushed material. At the same time, the driving rod 133 rotates and drives the extrusion block 134 to rotate. The extrusion block 134 rotates and contacts the L-shaped rod 135 to extrude the L-shaped rod 135. The extrusion block 134 moves downward under the reaction force of the extrusion of the L-shaped rod 135. The extrusion block 134 moves downward and drives the shaking plate 131 and the driving rod 131 to rotate. 133 moves downward, the driving rod 133 moves downward, driving the crushing device 136 to move downward, and at the same time, some large pieces of plastic enter the crushing frame 1 through the feeding frame 2 and will be offset, and some of the offset large pieces of plastic will hit the protection plate 139 to rotate, and the protection plate 139 rotates and drives the protection rod 138 to rotate, and the protection rod 138 rotates to squeeze the No. 5 spring to produce deformation, and the protection rod 138 and the protection plate 139 guide the offset large pieces of plastic under the elastic force of the No. 5 spring to improve the crushing efficiency of the plastic.

[0034] See also Figure 1-7On the basis of the above embodiment, another embodiment of the present invention further includes a discharging device and an adjusting device, the discharging device includes a discharging rod 141, a discharging plate 142, a spring plate 143, a protrusion 144 and a linkage plate 145, the discharging rod 141 is fixedly installed at the bottom of the inner wall of the crushing frame 1, the discharging plate 142 is slidably installed on the circumferential surface of the discharging rod 141, a slide groove is opened on the surface of the discharging plate 142, the spring plate 143 is slidably installed on the inner wall of the slide groove, the protrusion 144 is fixedly installed on the inner wall of the crushing frame 1, and the linkage plate 145 is fixedly installed at the bottom of the concentrated frame 137, and the up and down shaking can help the material to be discharged more quickly at the discharging port, especially for the crushed plastic, the shaking can effectively promote the discharge and improve the production efficiency.

[0035] A No. 7 spring is arranged between the discharge rod 141 and the discharge plate 142, a No. 8 spring is arranged between the spring plate 143 and the slide groove, and the linkage plate 145 is in contact with the top of the discharge plate 142. The No. 7 spring can drive the discharge plate 142 to reset, and the resonance can increase the amplitude and frequency of the discharge plate 142, thereby increasing the discharge efficiency of the plastic particles at the discharge port.

[0036] The adjusting device includes an adjusting rod 151, a button 152, a protective frame 153, a protective plate 154 and a fixed rod 155. The adjusting rod 151 slides through the surface of the control panel 4. An adjusting hole is provided on the surface of the crushing frame 1. The button 152 is fixedly mounted on the top of the dust collecting device 12. The protective frame 153 is fixedly mounted on the top of the dust collecting device 12. The protective plate 154 is slidably mounted on the top of the inner wall of the protective frame 153. The fixed rod 155 is fixedly mounted on the surface of the crushing frame 1. By adjusting the size of the discharge port, the material flow in the production process can be optimized to avoid blockage and accumulation.

[0037] The button 152 is electrically connected to the dust collecting device 12. A No. 9 spring is provided between the adjusting rod 151 and the control panel 4. The adjusting rod 151 contacts the adjusting hole. The No. 9 spring can drive the adjusting rod 151 to reset. The dust collecting device 12 is opened to the maximum in linkage, which can effectively prevent dust leakage.

[0038] When this embodiment is working: the motor 132 drives the driving rod 133 to rotate, and the driving rod 133 rotates to drive the crushing device 136 to rotate to crush the broken materials. At the same time, the driving rod 133 rotates to drive the extrusion block 134 to rotate. The extrusion block 134 rotates and contacts the L-shaped rod 135 to squeeze the L-shaped rod 135. The extrusion block 134 moves downward under the reaction force of squeezing the L-shaped rod 135. The extrusion block 134 moves downward and drives the shaking plate 131 and the driving rod 133 to move downward. The driving rod 133 moves downward and drives the central frame 137 to move downward. The central frame 137 moves downward and drives the linkage plate 145 to move downward. The linkage plate 145 moves downward and drives it to contact the top of the discharge plate 142 and squeeze the discharge plate 142 to move downward. At the same time, the discharge plate 142 moves downward and drives the spring plate 143 to move. The spring plate 143 moves and contacts the protrusion 144 to generate vibration. The vibration of the spring plate 143 drives the discharge plate 142 to resonate together.

[0039] When the size of the discharge port needs to be adjusted, the adjusting rod 151 is manually pulled to move in the direction away from the crushing frame 1, and the adjusting rod 151 moves out of contact with the adjusting hole and releases the limit on the control panel 4. After the limit of the control panel 4 is released, the control panel 4 is manually pulled to move, and the size of the discharge port is adjusted by pulling the control panel 4 to move. At the same time, when the control panel 4 is manually pulled upward, the control panel 4 moves upward to drive the dust collecting device 12 to move, and the dust collecting device 12 moves to drive the protective frame 153 and the protective plate 154 to move. The protective plate 154 moves and contacts with the fixed rod 155 and is squeezed by the fixed rod 155. The protective plate 154 is squeezed by the fixed rod 155 and moves in the direction away from the crushing frame 1. The protective plate 154 moves in the direction away from the crushing frame 1 to press the button 152. The button 152 is pressed by the protective plate 154 to drive the dust collecting device 12 to operate at maximum power to absorb dust.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An engineering plastic pulverizing device, comprising a pulverizing frame (1), characterized in that: It also includes a feeding device, a crushing device, a discharging device and an adjusting device; A feeding frame (2) is fixedly mounted on the top of the crushing frame (1), a curved panel (3) is fixedly mounted on the surface of the feeding frame (2), a discharge hole is provided on the surface of the crushing frame (1), a control panel (4) is slidably mounted on the surface of the crushing frame (1), and a dust collecting device (12) is fixedly mounted on the surface of the control panel (4); The feeding device comprises a feeding hole (5), a slider (6), a rotating plate (7), a feeding plate (8), a displacement plate (9), a load-bearing rod (10) and a support rod (11); the feeding hole (5) is opened on the surface of the feeding frame (2); the slider (6) is slidably mounted on the inner wall of the feeding frame (2); the rotating plate (7) is rotatably mounted on the surface of the slider (6); the feeding plate (8) is fixedly mounted on the surface of the rotating plate (7); the displacement plate (9) is slidably mounted on the inner wall of the feeding frame (2); the load-bearing rod (10) slidably penetrates the surface of the displacement plate (9); and the support rod (11) is fixedly mounted on the top of the load-bearing rod (10); A No. 1 spring is provided between the slider (6) and the feed frame (2), a No. 2 spring is provided between the slider (6) and the rotating plate (7), a No. 3 spring is provided between the displacement plate (9) and the feed frame (2), a No. 4 spring is provided between the displacement plate (9) and the load-bearing rod (10), and the support rod (11) is in contact with the bottom of the feed plate (8); The crushing device comprises a shaking plate (131), a motor (132), a driving rod (133), an extrusion block (134), an L-shaped rod (135), a crushing device (136) and a concentration frame (137); the shaking plate (131) is slidably mounted on the surface of the crushing frame (1); the motor (132) is fixedly mounted on the surface of the shaking plate (131); the driving rod (133) is fixedly mounted on the output end of the motor (132); the extrusion block (134) is fixedly mounted on the circumferential surface of the driving rod (133); the L-shaped rod (135) is fixedly mounted on the surface of the crushing frame (1); the crushing device (136) is arranged on the circumferential surface of the driving rod (133); the concentration frame (137) is slidably mounted on the inner wall of the crushing frame (1); and the driving rod (133) is in contact with the concentration frame (137); A protection rod (138) is rotatably mounted on the inner wall of the crushing frame (1), a protection plate (139) is fixedly mounted on the circumferential surface of the protection rod (138), a No. 5 spring is arranged between the protection rod (138) and the crushing frame (1), a No. 6 spring is arranged between the shaking plate (131) and the crushing frame (1), and the driving rod (133) passes through the inner and outer walls of the centralizing frame (137); The discharging device comprises a discharging rod (141), a discharging plate (142), a spring plate (143), a protrusion (144) and a linkage plate (145); the discharging rod (141) is fixedly mounted on the bottom of the inner wall of the crushing frame (1); the discharging plate (142) is slidably mounted on the circumferential surface of the discharging rod (141); a sliding groove is provided on the surface of the discharging plate (142); the spring plate (143) is slidably mounted on the inner wall of the sliding groove; the protrusion (144) is fixedly mounted on the inner wall of the crushing frame (1); and the linkage plate (145) is fixedly mounted on the bottom of the centralizing frame (137).

2. The engineering plastic crushing device according to claim 1, characterized in that: A No. 7 spring is provided between the discharge rod (141) and the discharge plate (142), a No. 8 spring is provided between the spring plate (143) and the slide groove, and the linkage plate (145) is in contact with the top of the discharge plate (142).

3. The engineering plastic crushing device according to claim 2, characterized in that: The adjustment device comprises an adjustment rod (151), a button (152), a protection frame (153), a protection plate (154) and a fixing rod (155); the adjustment rod (151) slides through the surface of the control panel (4); an adjustment hole is provided on the surface of the crushing frame (1); the button (152) is fixedly mounted on the top of the dust collecting device (12); the protection frame (153) is fixedly mounted on the top of the dust collecting device (12); the protection plate (154) is slidably mounted on the top of the inner wall of the protection frame (153); and the fixing rod (155) is fixedly mounted on the surface of the crushing frame (1).

4. The engineering plastic crushing device according to claim 3, characterized in that: The button (152) is electrically connected to the dust collecting device (12); a No. 9 spring is provided between the adjusting rod (151) and the control panel (4); and the adjusting rod (151) is in contact with the adjusting hole.

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