A PVC material crushing and recycling equipment

Abstract

The present invention relates to the technical field of plastic crushing equipment, and particularly relates to a pulverizing and recycling equipment for polyvinyl chloride materials, including a feeding bin, on which a movable plate and racks located on both sides of the movable plate are slidably installed. A gear ring is provided on the rotating shaft of the movable plate, and the gear ring is used to cooperate with the racks when following the rotation of the movable plate to guide the upward movement of the movable plate. A support member is provided at the bottom of the movable plate, and an adjusting lever is connected to the bottom of the support member; a crushing chamber, on which a crushing roller and a water spray pipe facing the crushing roller are provided. A water pump communicating with the water spray pipe is provided at the bottom of the crushing chamber, and a control valve is provided between the water pump and the water spray pipe. The control valve is used to control the opening of the water spray pipe. The water pump is connected to the crushing roller through a belt pulley assembly. A limit post elastically installed is provided on the rotating shaft of the crushing roller, and the limit post is used to drive the belt pulley assembly when the crushing roller rotates rapidly. The present invention can adjust the crushing speed of the crushing roller, effectively prevent waste products from falling from the conveying equipment and the feeding bin, and is safer.

Description

Technical Field

[0001] The invention relates to the technical field of plastic crushing equipment, in particular to a polyvinyl chloride material crushing and recycling device. Background Art

[0002] Plastics are polymer compounds made from monomers through addition or condensation reactions. They have a medium deformation resistance, between that of fibers and rubbers. They are composed of synthetic resins and additives such as fillers, plasticizers, stabilizers, lubricants, and colorants. Plastics are important organic synthetic polymer materials with a wide range of applications. However, the "white pollution" caused by discarded plastics is becoming increasingly serious. A detailed understanding of the composition and classification of plastics will not only help us use plastic products scientifically, but also facilitate the classified recycling of plastics and effectively control and reduce "white pollution." Recycled plastics refer to plastic raw materials obtained by processing waste plastics through physical or chemical methods such as pretreatment, melt granulation, and modification. This is the reuse of plastics.

[0003] Before plastic products enter the crusher, they are usually put into the feed bin by means of conveying equipment. Plastic products will continuously enter the crusher. As plastic products continue to accumulate, the crushing space will gradually decrease. If there are too many waste products to be crushed in the crusher, they will not only be easily squeezed out, but also increase the load of the crushing device. The China Patent Network has published a publication number: CN117301362B, which is named a plastic product recycling crusher. It is controlled by a feed amount control mechanism. As the waste products continue to increase, the waste will squeeze the floating plate to make it rise, and then lift the light baffle to block the docking photoelectric sensor from receiving light, so as to control the servo motor to drive the baffle plate to rotate to close the feed bin, so that the material can continuously enter the feed bin.

[0004] In the above-mentioned public documents, the floating plate and light shielding plate in the control of the feed quantity control mechanism are used to cooperate in detecting the amount of waste in the feed bin. When the waste accumulates, the light shielding plate is raised to control the servo motor to drive the material shielding plate to rotate to close the feed bin. However, the material on the conveying equipment will accumulate, which will not only cause the material to fall and create a danger, but also when the feed quantity control mechanism is opened, a large amount of waste will instantly re-enter the feed bin and even block the feed bin, reducing the overall crushing efficiency. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a polyvinyl chloride material crushing and recycling equipment, which can effectively solve the problem that the prior art cannot flexibly handle waste in the crushing chamber, and the waste easily affects the crushing space excessively, thereby reducing the crushing efficiency.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The present invention provides a polyvinyl chloride material crushing and recycling device, comprising:

[0008] A feeding bin is provided on which a movable plate and racks on both sides of the movable plate are slidably mounted. A gear ring is provided on the rotating shaft of the movable plate. The gear ring is used to cooperate with the racks to guide the movable plate to rise when the movable plate rotates. A support is provided at the bottom of the movable plate, and an adjusting lever is connected to the bottom of the support;

[0009] A crushing chamber is provided with a crushing roller and a water spray pipe facing the crushing roller. A water pump connected to the water spray pipe is provided at the bottom of the crushing chamber, and a control valve is provided between the water pump and the water spray pipe. The control valve is used to control the opening of the water spray pipe. The water pump is connected to the crushing roller through a pulley assembly. An elastically mounted limit column is provided on the rotating shaft of the crushing roller. The limit column is used to drive the pulley assembly when the crushing roller rotates rapidly.

[0010] Furthermore, the movable plate is slidably installed on the feed bin through a slider, and there are two groups of movable plates symmetrically distributed on both sides of the feed bin, and the two groups of movable plates are in an inverted "eight" shape in the initial state, for guiding the plastic into between the two groups of crushing rollers.

[0011] Furthermore, the support member is slidably mounted on the feed bin, and the top of the support member is connected to the bottom of the slider. A spring is provided between the support member and the feed bin, and the spring is used for supporting and resetting the slider.

[0012] Furthermore, a through hole is provided at the bottom of the support member, and an adjusting lever is rotatably set on the feed bin and extends into the through hole. The adjusting lever is used to increase the rotation speed of the crushing roller when rotating. When the slider drives the support member to rise, the adjusting lever is turned to rotate, thereby increasing the rotation speed of the crushing roller and accelerating the crushing. When the material in the feed bin is reduced and the movable plate is reset, it drives the slider to descend, and then the adjusting lever is turned again to reset to reduce the rotation speed of the crushing roller.

[0013] Furthermore, the crushing rollers are provided in two groups and are symmetrically distributed in the crushing chamber, the water spray pipe is located outside the crushing chamber, and the water spray pipe is provided with multiple groups of branch pipes extending to the crushing rollers.

[0014] Furthermore, the control valve includes a rod sleeve arranged on the outer peripheral surface of the crushing chamber and connected to the liquid inlet end of the water spray pipe, a toggle rod extending into the crushing chamber is slidably installed on the rod sleeve, and a water hole is provided on the toggle rod, and an elastic part 2 is provided in the rod sleeve to resist the toggle rod, and the elastic part 2 is used to push the toggle rod so that the water hole and the liquid inlet hole of the water spray pipe are misaligned.

[0015] Furthermore, the pulley assembly consists of two sets of pulleys and a set of belts, one set of pulleys is arranged on the water pump, and the other set of pulleys is rotatably arranged on the rotating shaft of the crushing roller, and the two sets of pulleys are connected by belt transmission.

[0016] Furthermore, a limiting hole is provided on the pulley at the end of the crushing roller. A limiting post is slidably mounted on the rotating shaft of the crushing roller, and an elastic member I is provided on the limiting post and connected to the rotating shaft of the crushing roller. The elastic member I is used to always pull the limiting post back into the rotating shaft of the crushing roller. When the crushing roller rotates rapidly, the limiting post is moved out and extends into the limiting hole by centrifugal force, thereby driving the pulley assembly. Beneficial effects

[0017] The technical solution provided by the present invention has the following beneficial effects compared with the known prior art:

[0018] First, two movable plates are used to detect the amount of waste products in the feeding bin, so as to judge the crushing environment. When the two movable plates are pressed and rotated and move away from each other, that is, the gap between the two movable plates increases. At this time, under the cooperation of the gear ring and the rack, the slider and the support member are driven to pull the adjusting lever, thereby changing the crushing speed of the crushing roller, accelerating the crushing, without the need to stop the operation of the conveying equipment, effectively preventing the waste products from falling from the conveying equipment and the feeding bin, and being safer;

[0019] Second, through the continuous extrusion of the movable plate, the shifting lever is pushed back into the rod sleeve to realize the communication between the water through hole and the inner channel of the spray pipe. Subsequently, after the crushing roller rotates rapidly, the limiting post on the rotating shaft of the crushing roller is moved out by centrifugal force and extends into the limiting hole at the same time, restricting the relative rotation between the pulley assembly and the rotating shaft of the crushing roller, and then driving the pulley assembly to drive the water pump to rotate and work, pumping the liquid at the bottom of the crushing chamber and conveying it into the spray pipe, and finally spraying it onto the crushing roller to cool the crushing roller and prevent the waste products from sticking to the crushing roller during crushing. Description of the drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention from the first perspective;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention from the second perspective;

[0023] Figure 3 It is a partial cross-sectional view of the feeding bin of the present invention;

[0024] Figure 4 For the present invention Figure 3 The enlarged view of part A;

[0025] Figure 5It is a partial cross-sectional view of the crushing chamber of the present invention;

[0026] Figure 6 For the present invention Figure 5 Enlarged view of point B;

[0027] Figure 7 This is a schematic diagram of the connection between the pulley assembly and the crushing roller of the present invention.

[0028] Figure numerals: 1. Feed hopper; 11. Rack; 12. Movable plate; 121. Gear ring; 13. Slider; 14. Support member; 141. Through hole; 15. Adjustment lever; 2. Crushing chamber; 21. Crushing roller; 211. Limiting column; 212. Elastic member 1; 22. Discharge conveyor belt; 23. Water pump; 24. Water spray pipe; 25. Control valve; 251. Rod sleeve; 252. Toggle lever; 2521. Water hole; 253. Elastic member 2; 26. Pulley assembly; 261. Limiting hole. DETAILED DESCRIPTION

[0029] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0030] The present invention will be further described below with reference to the embodiments. Example

[0031] A polyvinyl chloride material crushing and recycling equipment, refer to the attached Figure 1-7 ,include:

[0032] The feeding bin 1 has a movable plate 12 and racks 11 on both sides of the movable plate 12 slidably installed on the feeding bin 1. One end of the movable plate 12 can slide on the inner wall of the feeding bin 1 through a rotating shaft. A gear ring 121 is provided on the rotating shaft of the movable plate 12. Both ends of the rotating shaft are slidably installed on the feeding bin 1 through sliders 13, that is, one end of the movable plate 12 slides with the inner wall of the feeding bin 1. When the two sets of movable plates 12 are squeezed by waste, the two sets of movable plates 12 rotate along one end with the slider 13 and move away from each other, thereby releasing more space for placing waste. When the movable plate 12 is squeezed, it drives the rotating shaft to rotate on the slider 13, and the gear ring 121 provided on the rotating shaft The movable plate 12 rotates along with the gear rack 11 to guide the movable plate 12 to rise, preventing the movable plate 12 from contacting the crushing roller 21 during rotation, which is safer. The movable plate 12 is provided with two groups and is symmetrically distributed on both sides of the feed bin 1, and the two groups of movable plates 12 are in an inverted "eight" shape in the initial state, which is used to guide the plastic into between the two groups of crushing rollers 21. A support member 14 is provided at the bottom of the movable plate 12, and the support member 14 is slidably mounted on the feed bin 1, and the top of the support member 14 is connected to the bottom of the slider 13. A spring is provided between the support member 14 and the gear rack 11. At the same time, under the cooperation of the gear ring 121 and the gear rack 11, the tilt of the initial state of the movable plate 12 is maintained, and the support member 14 An adjusting lever 15 is connected to the bottom, and the adjusting lever 15 is used to change the rotation speed of the crushing roller 21, thereby changing the crushing speed of the crushing roller 21. The two ends of the spring are respectively connected to the bottom of the slider 13 and the feed bin 1. The spring is not only used to support the slider 13 so that the slider 13 maintains an initial position, but also can actively pull the movable plate 12 to reset when the waste in the feed bin 1 decreases, thereby reducing the rotation speed of the driving crushing roller 21 equipment and reducing the crushing speed of the crushing roller 21. Since a through hole 141 is provided at the bottom of the support member 14, the adjusting lever 15 is rotatably set on the feed bin 1 and extends into the through hole 141. When the waste in the feed bin 1 continues to increase and squeezes When the movable plate 12 rotates along the rotating shaft, with the cooperation of the rack 11 and the ring gear 121, it drives the slider 13 to slide upward in the feed bin 1, and then drives the support member 14 to rise. At this time, the through hole 141 drives the adjusting lever 15 to rotate, thereby increasing the rotation speed of the crushing roller 21 and accelerating the crushing, so that the crushing speed of the waste in the feed bin 1 is greater than the feeding speed, thereby quickly processing the waste falling into the feed bin 1 and preventing excessive waste from affecting the crushing effect. When the waste in the feed bin 1 is in a normal state, the slider 13 and the movable plate 12 descend and drive the movable plate 12 to return to the initial height and initial inclination angle, and then the adjusting lever 15 is toggled again to return to the original position to reduce the rotation speed of the crushing roller 21.

[0033] In the above technical solution, two movable plates 12 are used to detect the amount of waste products in the feeding bin 1, so as to judge the crushing environment. When the waste products in the two feeding bins 1 increase rapidly and the feeding speed of the waste products is greater than the crushing speed, the movable plates 12 are pressed to rotate and move away from each other, that is, the gap between the two movable plates 12 increases. At this time, under the cooperation of the gear ring 121 on the rotating shaft and the rack 11, the slider 13 and the support member 14 are driven to pull the adjusting lever 15, thereby increasing the rotation speed of the driving crushing roller 21 equipment and then increasing the crushing speed of the crushing roller 21, accelerating the crushing to solve the problem that too many waste products in the feeding bin 1 are likely to affect the crushing. At the same time, it is not necessary to stop the operation of the conveying equipment, effectively preventing the waste products from falling from the conveying equipment and the feeding bin 1, which is safer.

[0034] Crushing chamber 2, a crushing roller 21 and a water spray pipe 24 facing the crushing roller 21 are provided on the crushing chamber 2. By spraying water on the crushing roller 21 through the water spray pipe 24, the overheating caused by the continuous high-intensity operation of the crushing roller 21 is reduced, and the probability of waste products sticking to the crushing roller 21 during crushing is reduced. A water pump 23 communicated with the water spray pipe 24 is provided at the bottom of the crushing chamber 2. The water pump 23 works to convey the cleaning liquid into the water spray pipe 24 and spray it onto the crushing roller 21. A control valve 25 is provided between the water pump 23 and the water spray pipe 24. The control valve 25 is used to control the opening of the water spray pipe 24. The water pump 23 is connected to the crushing roller 21 through a belt pulley assembly 26. The rotation of the crushing roller 21 during operation is converted into the rotation and operation of the water pump 23 through the belt pulley assembly 26. An elastically mounted limit post 211 is provided on the rotating shaft of the crushing roller 21. The limit post 211 is used to drive the belt pulley assembly 26 when the crushing roller 21 rotates rapidly. The timing of the driving connection between the crushing roller 21 and the belt pulley assembly 26 is controlled through the limit post 211. When the conditions are not met, the belt pulley assembly 26 cannot drive the water pump 23 to rotate following the crushing roller 21, thereby reducing the energy loss during the operation of the crushing roller 21.

[0035] Specifically, two groups of crushing rollers 21 are provided and symmetrically distributed in the crushing chamber 2. The water spray pipe 24 is located outside the crushing chamber 2, and a plurality of branch pipes extending towards the crushing roller 21 are provided on the water spray pipe 24. The cleaning liquid is sprayed onto the crushing roller 21 through the branch pipes of the water spray pipe 24 to reduce the temperature of the crushing roller 21 during continuous high-intensity operation, and at the same time prevent waste products from sticking to the crushing roller 21 during crushing.

[0036] Further, the control valve 25 includes a rod sleeve 251 disposed on the outer peripheral surface of the crushing chamber 2 and communicating with the liquid inlet end of the water spray pipe 24. A toggle rod 252 extending into the crushing chamber 2 is slidably mounted on the rod sleeve 251, and a water through hole 2521 is provided on the toggle rod 252. An elastic member II 253 pressing against the toggle rod 252 is provided in the rod sleeve 251. The elastic member II 253 is used to push the toggle rod 252 so that the water through hole 2521 is misaligned with the liquid inlet hole of the water spray pipe 24. In the initial state, the elastic member II 253 extrudes the toggle rod 252 and makes the water through hole 2521 misaligned with the inner channel of the water spray pipe 24. When the waste products in the crushing chamber 2 increase and squeeze the movable plate 12 to move, and when the slider 13 and the support member 14 move, the adjusting toggle rod 15 is toggled to accelerate the rotation speed of the crushing roller 21, thereby increasing the crushing speed. When the movable plate 12 continues to tilt and squeeze the toggle rod 252, the water through hole 2521 is controlled to communicate with the inner channel of the water spray pipe 24 to realize the opening of the water spray pipe 24.

[0037] In addition, the pulley assembly 26 is composed of two groups of pulleys and a set of belts. One group of pulleys is disposed on the water pump 23, and one group of pulleys is rotatably disposed on the rotating shaft of the crushing roller 21. The two groups of pulleys are connected by belt drive. A limit hole 261 is provided on the pulley at the end of the crushing roller 21. A limit post 211 is slidably mounted on the rotating shaft of the crushing roller 21, and an elastic member I 212 connecting the limit post 211 to the rotating shaft of the crushing roller 21 is provided on the limit post 211. The elastic member I 212 is used to always pull the limit post 211 back into the rotating shaft of the crushing roller 21. When the crushing roller 21 rotates rapidly, the limit post 211 is moved out by centrifugal force and extends into the limit hole 261, thereby driving the pulley assembly 26.

[0038] In the above technical solution, during the rapid operation of the crushing roller 21, after the movable plate 12 continuously squeezes and pushes the toggle rod 252 to retract into the rod sleeve 251, the water through hole 2521 is communicated with the inner channel of the water spray pipe 24. Subsequently, after the crushing roller 21 rotates rapidly, the limit post 211 on the rotating shaft of the crushing roller 21 is moved out by centrifugal force and extends into the limit hole 261 at the same time, restricting the relative rotation of the pulley assembly 26 and the rotating shaft of the crushing roller 21, thereby driving the pulley assembly 26 to drive the water pump 23 to rotate and work, pumping the liquid at the bottom of the crushing chamber 2 and transporting it into the water spray pipe 24, and finally spraying it onto the crushing roller 21 to cool the crushing roller 21 and prevent waste products from adhering to the crushing roller 21 during crushing.

[0039] Working principle: The waste is transported to the feed bin 1 through the conveying equipment. When special circumstances occur, such as when a whole frame or a whole bag of waste is poured into the conveying equipment, a large amount of waste will temporarily enter the feed bin 1, which will cause the speed at which the waste enters the feed bin 1 to be faster than the crushing roller 21. At this time, the waste in the feed bin 1 will increase. In order to prevent the feed bin 1 from being filled with waste and affecting the crushing, when a large amount of waste enters the feed bin 1, the waste squeezes the two sets of movable plates 12. When the two sets of movable plates 12 are pressed and rotated and move away from each other to a preset value, the slider 13 and the gear ring 121 and the rack 11 cooperate to drive the slider 13 and the gear rack 11 to move away from each other. The support member 14 rises and stretches the spring sleeved on the support member 14. At the same time, the support member 14 toggles the adjustment lever 15 when it rises, thereby controlling the rotation speed of the driving crushing roller 21 device to increase the crushing speed of the crushing roller 21, speeding up the crushing of waste to solve the problem that too much waste in the feed bin 1 is easily affected by crushing, and at the same time, there is no need to stop the operation of the conveying equipment, effectively preventing the waste from falling from the conveying equipment and the feed bin 1. When the speed at which the waste enters the feed bin 1 is less than the crushing speed of the crushing roller 21, the waste in the feed bin 1 will gradually decrease, thereby gradually canceling the extrusion of the movable plate 12, which is sleeved on the support member. The spring on 14 will pull the slider 13 down, and then under the cooperation of the gear ring 121 and the rack 11 on the rotating shaft of the movable plate 12, the movable plate 12 will be pulled back to its original position. The slider 13 and the support member 14 will cooperate to toggle the adjustment lever 15 to reset, reduce the device for controlling the rotation speed of the crushing roller 21, and restore it to a normal crushing speed. In the process of rapid rotation and operation of the crushing roller 21, the crushing roller 21 will easily overheat. At this time, after the movable plate 12 is continuously squeezed, the toggle lever 252 is pushed back into the rod sleeve 251 to achieve communication between the water hole 2521 and the channel in the water spray pipe 24. Subsequently, due to the crushing roller 21, the crushing roller 21 is easily overheated. After rapid rotation, the limiting post 211 on the rotating shaft of the crushing roller 21 moves out due to centrifugal force and extends into the limiting hole 261, limiting the relative rotation between the pulley assembly 26 and the rotating shaft of the crushing roller 21, thereby driving the pulley assembly 26 to drive the water pump 23 to rotate and work, extracting the liquid at the bottom of the crushing chamber 2 and transporting it to the water spray pipe 24, and finally spraying it onto the crushing roller 21, thereby cooling the crushing roller 21 and preventing the waste from sticking to the crushing roller 21 during crushing. The liquid sprayed from the water spray pipe 24 can not only cool the crushing roller 21, but also rinse the crushed plastic, and finally discharge the crushed plastic through the discharge conveyor belt 22.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A pulverizing and recycling device for polyvinyl chloride materials, characterized in that, Comprising: A feeding bin (1), on which a movable plate (12) and racks (11) located on both sides of the movable plate (12) are slidably installed. A gear ring (121) is provided on the rotating shaft of the movable plate (12), and the gear ring (121) is used to cooperate with the racks (11) when the movable plate (12) rotates to guide the movable plate (12) to rise. A support member (14) is provided at the bottom of the movable plate (12), and an adjusting lever (15) is connected to the bottom of the support member (14). A through hole (141) is provided at the bottom of the support member (14), and the adjusting lever (15) is rotatably arranged on the feeding bin (1) and extends into the through hole (141). The movable plate (12) is slidably installed on the feeding bin (1) through a slider (13); The crushing chamber (2) is provided with a crushing roller (21) and a water spray pipe (24) facing the crushing roller (21). When the slider (13) drives the support member (14) to rise, the adjusting lever (15) is toggled to rotate, thereby increasing the rotation speed of the crushing roller (21) and accelerating the crushing. When the material in the feeding bin (1) decreases and the movable plate (12) resets, it drives the slider (13) to descend, and then toggles the adjusting lever (15) to reset again to reduce the rotation speed of the crushing roller (21). A water pump (23) communicated with the water spray pipe (24) is provided at the bottom of the crushing chamber (2), and a control valve (25) is provided between the water pump (23) and the water spray pipe (24). The control valve (25) is used to control the opening of the water spray pipe (24). The control valve (25) includes a rod sleeve (251) provided on the outer peripheral surface of the crushing chamber (2) and communicated with the liquid inlet end of the water spray pipe (24). A toggle rod (252) extending into the crushing chamber (2) is slidably installed on the rod sleeve (251), and a water through hole (2521) is provided on the toggle rod (252). An elastic member two (253) pressing against the toggle rod (252) is provided in the rod sleeve (251). The elastic member two (253) is used to push the toggle rod (252) so that the water through hole (2521) is misaligned with the liquid inlet hole of the water spray pipe (24). The water pump (23) is connected to the crushing roller (21) through a belt pulley assembly (26). A limit post (211) elastically installed is provided on the rotating shaft of the crushing roller (21). The limit post (211) is used to drive the belt pulley assembly (26) when the crushing roller (21) rotates rapidly. The belt pulley assembly (26) consists of two groups of belt pulleys and a group of belts. One group of belt pulleys is provided on the water pump (23), and one group of belt pulleys is rotatably provided on the rotating shaft of the crushing roller (21). The two groups of belt pulleys are connected by belt transmission. A limit hole (261) is provided on the belt pulley at the end of the crushing roller (21). A limit post (211) is slidably installed on the rotating shaft of the crushing roller (21), and an elastic member one (212) connected to the rotating shaft of the crushing roller (21) is provided on the limit post (211). The elastic member one (212) is used to always pull the limit post (211) back into the rotating shaft of the crushing roller (21). When the crushing roller (21) rotates rapidly, the limit post (211) is moved out and extends into the limit hole (r261) by centrifugal force, thereby driving the belt pulley assembly (26).

2. The pulverizing and recycling equipment for polyvinyl chloride material according to claim 1, characterized in that, Two groups of the movable plates (12) are provided and symmetrically distributed on both sides of the feeding bin (1), and the two groups of movable plates (12) are in an inverted 'V' shape in the initial state for guiding the plastic into the space between the two crushing rollers (21).

3. The PVC material crushing and recycling equipment according to claim 1, characterized in that, The support member (14) is slidably installed on the feeding bin (1), and the top of the support member (14) is connected to the bottom of the slider (13). A spring is provided between the support member (14) and the feeding bin (1), and the spring is used for supporting and the reset of the slider (13).

4. The pulverizing and recycling equipment for a polyvinyl chloride material according to claim 1, characterized in that Two groups of the crushing rollers (21) are provided and symmetrically distributed in the crushing chamber (2). The water spray pipe (24) is located outside the crushing chamber (2), and a plurality of branch pipes extending towards the crushing rollers (21) are provided on the water spray pipe (24).

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