Pulverizer for production of poly-modified vinyl resin

Abstract

The utility model discloses a crusher for producing poly-modified vinyl resin, which relates to the technical field of poly-modified vinyl resin production and comprises a machine body, a crushing box is fixedly mounted at the top of the machine body, a feed pipe is fixedly mounted at the top of the right side of the crushing box, fans are symmetrically arranged at the top of the crushing box, and a plurality of discharge ports are formed in the right side of the machine body. A center shaft is detachably installed in the middle of an inner cavity of the smashing box, multiple blades are fixedly installed on the outer surface of the center shaft, cutting edges are symmetrically arranged on one sides of the blades, and a rotating shaft is arranged in the middle of one side of each blade. Through cooperative use of the scraper structure and the extension rod structure, when the scraper works and the blade rotates, the scraper is driven by the eccentric wheel to alternately stretch out and draw back, resin particles adhered to the blade are scraped in real time, the scraper is matched with the cold air nozzle to form directional airflow, the temperature of the blade is synchronously reduced, loose chippings are blown off, and the adhesion rate is reduced; and the effects of reducing the adhesion rate of the blade during working and improving the overall working efficiency are comprehensively achieved.

Description

Technical Field

[0001] This utility model relates to the field of polymodified ethylene resin production technology, and in particular to a pulverizer for polymodified ethylene resin production. Background Technology

[0002] Polymodified ethylene resins (such as EVA and PVC) are widely used in packaging, shoe materials and other fields due to their excellent flexibility and viscoelasticity. During recycling or processing, they need to be crushed into particles by mechanical crushing to facilitate subsequent processing or storage and transportation. However, when crushing these resins, they soften after being heated by shear friction, have a low melting phase change temperature, and resin particles are easy to adhere to the surface of the cutting blade.

[0003] In traditional shredders, the problem of blade adhesion is solved by coating the blade surface with Teflon or ceramic and cooling the blade surface with cold air. However, this coating or cooling is only effective in the short term and cannot meet the continuous production needs of eight hours or even longer. Utility Model Content

[0004] The purpose of this invention is to provide a pulverizer for the production of poly(modified ethylene) resin, which solves the problem that during the pulverization process of poly(modified ethylene) resin, the blade temperature rises due to contact and friction between the blade and the poly(modified ethylene) resin, which in turn adsorbs poly(modified ethylene) resin particles and affects the overall pulverization efficiency.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: a pulverizer for producing polymodified ethylene resin includes a machine body, a pulverizing box is fixedly installed on the top of the machine body, a feed pipe is fixedly installed on the top right side of the pulverizing box, fans are symmetrically arranged on the top of the pulverizing box, and multiple discharge ports are opened on the right side of the machine body.

[0006] A central shaft is detachably installed in the middle of the inner cavity of the crushing box. Multiple blades are fixedly installed on the outer surface of the central shaft. The blades have symmetrical cutting edges on one side. A rotating shaft is located in the middle of one side of the blade. An eccentric wheel is located on the outer surface of the rotating shaft. An annular groove is located on the other side of the eccentric wheel. A slider is symmetrically located in the inner cavity of the annular groove. A connecting rod is rotatably installed on the other side of the slider through a joint bearing. An extension rod is hinged to the other end of the connecting rod. A scraper is connected to the other end of the extension rod through a hinge shaft. A limiting block is symmetrically located on one side of the blade. A strip groove is located on the surface of the limiting block. A limiting groove is located in the inner cavity of the limiting block.

[0007] Preferably, the slider, connecting rod, extension rod, scraper, limiting block, strip groove and limiting groove are all symmetrically arranged.

[0008] Preferably, the cross-section of the connecting rod is rectangular, which is clearance-fitted with the rectangular inner cavity of the strip groove, restricting the connecting rod to move only in the horizontal direction. The side of the connecting rod away from the slider is located in the inner cavity of the strip groove, so that when in use, the strip groove allows the connecting rod to move only horizontally left and right.

[0009] Preferably, the inner cavity of the limiting groove has a 45-degree inclined surface on the side near the slider, which is used to guide the extension rod to fold when the connecting rod retracts. Thus, in use, the inclined surface of the limiting groove forms a 45-degree angle with the direction of movement of the connecting rod. When the connecting rod moves towards the slider, the inclined surface presses the extension rod to rotate around the circular axis, thereby realizing the retraction of the scraper.

[0010] Preferably, a drive motor is installed on the top of the machine body on the side of the crushing chamber away from the feed pipe, and the output shaft of the drive motor is connected to the central shaft.

[0011] Preferably, the bottom of the feed pipe extends through to the top of the inner cavity of the crushing chamber, and the height of the part of the feed pipe extending into the inner cavity of the crushing chamber is located at the top of the blade, so that when in use, the resin material entering the inner cavity of the crushing chamber through the feed pipe can contact the blade and be crushed.

[0012] Preferably, the top of the inner cavity of the crushing box is symmetrically provided with multiple nozzles, and the fan is connected to the nozzles through a connecting pipe. The bottom of the nozzles faces the center of the central axis. In use, the angle of the multiple nozzles is used to form a cleaning air curtain, thereby cooling the inner cavity of the crushing box and blowing off resin particles that may adhere to the blade surface.

[0013] Preferably, the inner cavity of the machine body is detachably equipped with multiple vibration filter components, and the discharge port is located on the right side of the vibration filter components. Thus, during use, the vibration filter components can be used to screen resin particles of different diameters and discharge them through different discharge ports. Afterwards, the resin particles of different diameters can be packaged, transferred, or decomposed again.

[0014] Compared with the prior art, the advantages of this utility model are as follows:

[0015] This invention utilizes a combination of a scraper structure and an extension rod structure. During operation, as the blade rotates, the eccentric wheel drives the scraper to extend and retract alternately, scraping away resin particles adhering to the blade in real time. This, combined with a cooling nozzle to form a directional airflow, simultaneously reduces the blade temperature and blows away loose debris, thereby reducing the adhesion rate. Overall, this invention achieves the effect of reducing the adhesion rate of the blade during operation and improving overall work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model from the top right front side.

[0017] Figure 2This is a schematic diagram of the appearance of the right front top view after the overall structure of this utility model has been cut open;

[0018] Figure 3 This is a schematic diagram of the appearance of the combined blade structure and scraper structure of this utility model.

[0019] Figure 4 This is a cross-sectional view of the present invention after the blade structure and scraper structure are combined.

[0020] Reference numerals: 1. Machine body; 2. Crushing box; 3. Feed pipe; 4. Fan; 5. Discharge port; 101. Vibration filter assembly; 201. Central shaft; 202. Blade; 203. Blade edge; 204. Rotating shaft; 205. Eccentric wheel; 206. Annular groove; 207. Slider; 208. Connecting rod; 209. Extension rod; 210. Scraper; 211. Limiting block; 212. Strip groove; 213. Limiting groove; 401. Nozzle. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figures 1 to 4 This embodiment provides a pulverizer for producing polymodified ethylene resin, including a machine body 1. A pulverizing box 2 is fixedly installed on the top of the machine body 1. A feed pipe 3 is fixedly installed on the top right side of the pulverizing box 2. A drive motor is provided on the top of the machine body 1 on the side of the pulverizing box 2 away from the feed pipe 3. The output shaft of the drive motor is connected to the central shaft 201. The bottom of the feed pipe 3 extends through the top of the inner cavity of the pulverizing box 2. The height of the part of the feed pipe 3 extending into the inner cavity of the pulverizing box 2 is located at the top of the blade 202. Thus, when in use, the resin material entering the inner cavity of the pulverizing box 2 through the feed pipe 3 can contact the blade 202 and be pulverized.

[0023] The top of the crushing box 2 is symmetrically equipped with a fan 4, and the top of the inner cavity of the crushing box 2 is symmetrically equipped with multiple nozzles 401. The fan 4 is connected to the nozzles 401 through a connecting pipe. The bottom of the nozzles 401 faces the middle of the central shaft 201. In use, the angle of the multiple nozzles 401 is used to form a cleaning air curtain, thereby cooling the inner cavity of the crushing box 2 and blowing off resin particles that may adhere to the surface of the blade 202.

[0024] Multiple discharge ports 5 are provided on the right side of the machine body 1. Multiple vibration filter components 101 are detachably installed in the inner cavity of the machine body 1. The discharge ports 5 are located on the right side of the vibration filter components 101. Thus, when in use, the vibration filter components 101 can be used to screen resin particles of different diameters and discharge them through different discharge ports 5. Then, the resin particles of different diameters can be packaged, transferred, or decomposed again.

[0025] A central shaft 201 is detachably installed in the middle of the inner cavity of the crushing box 2. Multiple blades 202 are fixedly installed on the outer surface of the central shaft 201. Blades 203 are symmetrically opened on one side of the blades 202. A rotating shaft 204 is provided in the middle of one side of the blades 202. An eccentric wheel 205 is provided on the outer surface of the rotating shaft 204. An annular groove 206 is opened on the other side of the eccentric wheel 205. A slider 207 is symmetrically arranged in the inner cavity of the annular groove 206. Two limiting protrusions are symmetrically arranged on the inner wall of the annular groove 206, which correspond to the left and right limit positions of the slider 207 respectively, so that the eccentric wheel 205 is forced to reset every 180 degrees of rotation, thereby realizing the alternating extension and retraction of the double-sided scrapers 210.

[0026] On the other side of the slider 207, a connecting rod 208 is rotatably mounted via a spherical bearing. The other end of the connecting rod 208 is hinged to an extension rod 209. The other end of the extension rod 209 is connected to a scraper 210 via a hinge shaft. A torsion spring is provided at the hinge shaft to keep the scraper 210 pressed against the surface of the blade 203. A long slot is provided on the back of the scraper 210 and is connected to the extension rod 209 via a limiting screw. This limits the scraper 210 from leaving the range while allowing for fine-tuning of the angle. A limiting block 211 is symmetrically provided on one side of the blade 202. A strip groove 212 is provided on the surface of the limiting block 211. The cross-section of the connecting rod 208 is rectangular and is clearance-fitted with the rectangular inner cavity of the strip groove 212, limiting the connecting rod 208 to move only in the horizontal direction. The side of the connecting rod 208 away from the slider 207 is located in the inner cavity of the strip groove 212. Thus, during use, the strip groove 212 allows the connecting rod 208 to move only horizontally left and right.

[0027] The inner cavity of the limiting block 211 is provided with a limiting groove 213. The slider 207, connecting rod 208, extension rod 209, scraper 210, limiting block 211, strip groove 212 and limiting groove 213 are all symmetrically arranged. The inner cavity of the limiting groove 213 is a 45-degree inclined surface on the side near the slider 207, which is used to guide the extension rod 209 to fold when the connecting rod 208 retracts. Thus, in use, the inclined surface of the limiting groove 213 forms a 45-degree angle with the direction of movement of the connecting rod 208. When the connecting rod moves towards the slider side, the inclined surface presses the extension rod 209 to rotate around the circular axis, thereby realizing the retraction of the scraper 210.

[0028] Working principle: During operation, the resin to be decomposed is introduced into the feed pipe 3, allowing it to pass through the feed pipe 3 and fall into the inner cavity of the crushing box 2. Then, the drive motor starts the control center shaft 201 to rotate, thereby driving all the blades 202 on the outer surface of the center shaft 201 to rotate, and the blades 202 are used to crush the resin.

[0029] During the crushing process, as the cutting continues, the blade 202 comes into contact with and rubs against the resin, causing the temperature at the blade edge 203 on the surface of the blade 202 to rise. Resin particles easily adhere to the surface of the blade edge 203. At this time, the centrifugal force generated by the rotation of the central shaft 201 is used. The rotating shaft 204 is mounted on the blade 202 through the bearing. The eccentric wheel 205 is in clearance fit with the rotating shaft 204. The asymmetrical mass distribution of the eccentric wheel 205 and the collision of resin particles cause the eccentric wheel 205 to rotate continuously under the action of centrifugal force, generating periodic deflection. This pushes the slider 207 to slide back and forth in the annular groove 206. The limiting structure in the annular groove 206 forces the eccentric wheel 205 to reset once every 180 degrees. In this way, the connecting rod 208 and the extension rod 209 drive the double-sided scraper 210 to clean the blade edge 203 alternately. At the same time, the airflow impact of the nozzle 401 helps to maintain the continuous movement of the eccentric wheel 205.

[0030] When the left connecting rod 208 is in the extended state, the side of the connecting rod 208 away from the slider 207 abuts against the far end of the inner cavity of the limiting groove 213, so that the connection between the connecting rod 208 and the extension rod 209 is not squeezed by the inclined side of the inner cavity of the limiting groove 213. At this time, the two extension rods 209 connected to the left connecting rod 208 are in a vertical state, thereby moving the scraper 210, so that the scraper 210 moves to the blade 203 on the surface of the blade 202, and the scraper 210 scrapes off the resin particles adhering to the surface of the blade 203, thereby improving the crushing efficiency of the blade 202.

[0031] At the same time, the connecting rod 208 on the right side is in a retracted state, causing the extension rod 209 at the other end of the connecting rod 208 on the right side to retract into the inner cavity of the limiting groove 213 and fit against the inclined side of the inner cavity of the limiting groove 213. At this time, the scraper 210 on the right side is away from the surface of the blade 203.

[0032] In simple terms, the eccentric wheel 205 pushes the slider 207 to make radial reciprocating motion through the annular groove 206, so that the connecting rod 208 moves horizontally under the constraint of the strip groove 212, driving the extension rod 209 to fold or extend according to the 45-degree inclined plane limit rule, so that the scrapers 210 on both sides of the bed move and work alternately every 180 degrees, thereby intermittently cleaning the resin particles that may adhere to the surface of the blade 203.

[0033] Furthermore, by utilizing the nozzles 401 symmetrically arranged at the top of the inner cavity of the crushing chamber 2, cold air is continuously sprayed during the crushing process, forming an air curtain covering the blade 202. While cooling down, the resin particles on the surface of the blade 202 can be blown off. The entire process is repeated, improving the overall loading efficiency.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A pulverizer for producing poly(modified ethylene) resin, characterized in that, Includes a machine body (1), a crushing box (2) is fixedly installed on the top of the machine body (1), a feed pipe (3) is fixedly installed on the top right side of the crushing box (2), a fan (4) is symmetrically provided on the top of the crushing box (2), and multiple discharge ports (5) are opened on the right side of the machine body (1). A central shaft (201) is detachably installed in the middle of the inner cavity of the crushing box (2). Multiple blades (202) are fixedly installed on the outer surface of the central shaft (201). Blades (203) are symmetrically provided on one side of each blade (202). A rotating shaft (204) is provided in the middle of one side of each blade (202). An eccentric wheel (205) is provided on the outer surface of the rotating shaft (204). An annular groove (206) is provided on the other side of the eccentric wheel (205). The inner cavity of the annular groove (206) is symmetrically provided with... A slider (207) is mounted on the other side of the slider (207) via a joint bearing. An extension rod (209) is hinged to the other end of the extension rod (209). A scraper (210) is connected to the other end of the extension rod (209) via a hinge shaft. A limiting block (211) is symmetrically provided on one side of the blade (202). A strip groove (212) is provided on the surface of the limiting block (211). A limiting groove (213) is provided in the inner cavity of the limiting block (211).

2. The pulverizer for producing polymodified ethylene resin according to claim 1, characterized in that, The slider (207), connecting rod (208), extension rod (209), scraper (210), limiting block (211), strip groove (212) and limiting groove (213) are all symmetrically arranged.

3. The pulverizer for producing polymodified ethylene resin according to claim 1, characterized in that, The cross section of the connecting rod (208) is rectangular and is clearance-fitted with the rectangular inner cavity of the strip groove (212), which restricts the connecting rod (208) to move only in the horizontal direction. The side of the connecting rod (208) away from the slider (207) is located in the inner cavity of the strip groove (212).

4. The pulverizer for producing polymodified ethylene resin according to claim 1, characterized in that, The inner cavity of the limiting groove (213) near the slider (207) has a 45-degree slope, which is used to guide the extension rod (209) to fold when the connecting rod (208) retracts.

5. The pulverizer for producing polymodified ethylene resin according to claim 1, characterized in that, The top of the machine body (1) is located on the side of the crushing box (2) away from the feed pipe (3) and a drive motor is provided. The output shaft of the drive motor is connected to the central shaft (201).

6. The pulverizer for producing polymodified ethylene resin according to claim 1, characterized in that, The bottom of the feed pipe (3) extends through the top of the inner cavity of the crushing box (2), and the height of the part of the feed pipe (3) extending into the inner cavity of the crushing box (2) is located at the top of the blade (202).

7. The pulverizer for producing polymodified ethylene resin according to claim 1, characterized in that, The top of the inner cavity of the crushing box (2) is symmetrically provided with multiple nozzles (401). The blower (4) is connected to the nozzles (401) through a connecting pipe. The bottom of the nozzles (401) faces the middle of the central shaft (201).

8. The pulverizer for producing polymodified ethylene resin according to claim 1, characterized in that, The inner cavity of the machine body (1) is detachably equipped with multiple vibration filter components (101), and the discharge port (5) is located on the right side of the vibration filter component (101).

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