An ethylene-propylene-diene monomer (EPDM) rubber mixing and feeding equipment and method

Abstract

The present invention belongs to the technical field of rubber production, and discloses a ternary ethylene propylene rubber mixing feeding device and method thereof, which includes a feeding box fixed above an open mill through a bracket, a group of feeding pipes vertically distributed front and back on the bottom surface of the feeding box, a discharging mechanism arranged in the feeding pipes, and a sealing mechanism arranged in the bottom opening of the feeding pipes. Through the cooperative design of the feeding box, the feeding pipes, and the discharging mechanism, the present invention can increase the weight of the powder particles by forming a water film on the surface of the powder particles, and spray and feed the powder particles coated with the water film. The feeding effect is good, resources are saved, the mixing effect of rubber is improved, and the quality of rubber products is improved. It avoids the problem that under the influence of the air flow generated by the external environmental air flow and the operation of the open mill, the powder is likely to disperse during the falling process under the action of gravity and cannot all fall on the raw rubber, which is likely to cause insufficient feeding amount of the powder, waste of resources, reduction of the mixing effect, and affect the quality of rubber products.

Description

Technical Field

[0001] The present invention belongs to the technical field of rubber production, and specifically relates to a ternary ethylene propylene diene monomer (EPDM) rubber mixing feeding device and method. Background Art

[0002] Ethylene propylene diene monomer (EPDM) rubber is a copolymer of ethylene, propylene and a small amount of non-conjugated diene, which is a kind of ethylene propylene rubber. When ethylene is mixed by an open mill, various powdery compounding agents (such as accelerators, zinc oxide, carbon black, silica, calcium carbonate, etc.) usually need to be added to the raw rubber in the open mill through a feeding device to improve the performance of the rubber.

[0003] In the prior art, a Chinese patent discloses an open mill for rubber mixing (publication number: CN214773199U), which is provided with an automatic feeding device. The rubber compound is added to the feeding barrel, and the electromagnetic valve is controlled by a PCL control cabinet to discharge the material when feeding is required, avoiding the safety hazards brought by manual feeding.

[0004] However, there are still corresponding drawbacks in actual use: when the above patent needs to discharge powdery materials from the feeding barrel, under the influence of the external environmental air flow and the air flow generated by the operation of the open mill, the powdery materials are prone to scatter during the falling under the action of gravity and cannot all fall on the raw rubber, which is likely to cause insufficient feeding amount of the powdery materials, resulting in waste of resources, reducing the mixing effect, and affecting the quality of the rubber finished product. Summary of the Invention

[0005] Technical Problems to be Solved

[0006] To solve the problems raised in the above background art, the present invention provides a ternary ethylene propylene diene monomer (EPDM) rubber mixing feeding device and method, which has the advantages of convenient operation, stable feeding and resource saving. Through the combined design of structures such as a feeding box, a feeding pipe, a discharging mechanism, etc., it can spray and feed the powdery material particles wrapped with a water film. The powdery material particles are not easily affected by the external environmental air flow and the air flow generated by the operation of the open mill and scatter, improving the feeding effect of the powdery materials, ensuring sufficient feeding, facilitating resource saving, and improving the rubber mixing effect and the quality of the rubber finished product.

[0007] Technical Solutions

[0008] To achieve the above object, the present invention provides the following technical solutions: A ternary ethylene propylene diene monomer (EPDM) rubber mixing feeding device, comprising a feeding box fixed above the open mill through a bracket, a group of feeding pipes vertically distributed front and back on the bottom surface of the feeding box, a discharging mechanism arranged in the feeding pipe, and a sealing mechanism arranged in the bottom opening of the feeding pipe;

[0009] The feeding mechanism includes a sleeve that slides up and down in the feeding pipe, a casing that slides up and down in the sleeve and penetrates through the top of the feeding pipe, a rolling block that rotates in the casing, a humidifying mechanism arranged at the center of the bottom surface of the rolling block, two rollers symmetrically and movably installed on the left and right sides of the bottom surface of the rolling block through bearings, a group of supporting plates circumferentially and equidistantly arranged in the middle of the inner cavity of the sleeve, absorbent cotton fixed on the top surface of the supporting plates, a collecting shell fixedly sleeved on the lower part of the outer surface of the feeding pipe, scraping plates arranged on the left and right sides of the casing, a cleaning mechanism arranged on the top of the rolling block, a driving motor arranged above the casing for driving the casing to move up and down and the rolling block to rotate, and a limiting member arranged on the bottom surface of the supporting plate and the inner cavity of the feeding pipe;

[0010] Among them, the top end of the feeding pipe penetrates to the lower part of the inner cavity of the feeding box. A group of feeding ports are circumferentially and equidistantly arranged on the outer surface of the feeding pipe. The upper part of the outer surface of the sleeve is circumferentially and equidistantly provided with docking ports adapted to the feeding ports. A flexible communication pipe for connecting with the collecting shell is arranged on the bottom surface of the supporting plate.

[0011] In the above technical solution, preferably, the cleaning mechanism includes two groups of first spring telescopic rods symmetrically fixed on the upper part of the outer surface of the casing. A connecting frame is arranged between a group of the first spring telescopic rods. An elliptical groove is circumferentially opened on the top surface of the rolling block. Vertical rods are symmetrically and vertically arranged in the inner cavity of the elliptical groove. An annular convex platform is fixed on the top surface of the rolling block outside the elliptical groove. A knocking rod is hinged to the lower part of the vertical rod;

[0012] Among them, the fixed end and the telescopic end of the first spring telescopic rod are respectively fixedly connected with the outer surface of the casing and the side wall of the scraping plate. One side of the connecting frame is fixedly connected with the surface of the fixed end of the first spring telescopic rod. The other side of the connecting frame is slidably connected with the surface of the telescopic end of the first spring telescopic rod. The lower part of the vertical rod is movably connected with the inner cavity of the elliptical groove. A support rod horizontally penetrates through the upper part of the vertical rod. One end of the support rod is fixedly connected with the inner cavity of the casing. Two through channels are symmetrically opened in the upper part of the inner cavity of the casing. The bottom surface of the knocking rod is movably connected with the top of the annular convex platform. One end of the knocking rod penetrates outside the through channel, and one end of the knocking rod is movably connected with one side of the connecting frame located at the telescopic end of the first spring telescopic rod.

[0013] In the above technical solution, preferably, a reciprocating lead screw for driving the casing to slide up and down is fixedly installed on the end face of the output shaft of the driving motor. An installation groove is opened at the center of the top end of the rolling block. A driving rod is vertically fixedly installed on the bottom surface of the inner cavity of the installation groove. The bottom end of the reciprocating lead screw extends into the inner cavity of the installation groove, and the outer surface of the driving rod is vertically slidably connected with the bottom of the reciprocating lead screw.

[0014] In the above technical solution, preferably, the humidifying mechanism includes a liquid storage cavity opened on the rolling block, an infusion tube vertically fixed at the center of the bottom surface of the rolling block and communicating with the inner cavity of the liquid storage cavity, two one-way pressure spray nozzles symmetrically communicated with the upper part of the outer surface of the infusion tube, an annular partition block fixed in the inner cavity of the infusion tube and located below the two one-way pressure spray nozzles, a sealing block slidably moving up and down in the infusion tube, a one-way liquid inlet valve arranged in the upper port of the infusion tube for guiding the liquid in the liquid storage cavity into the inner cavity of the infusion tube, and a group of material crushing rods circumferentially fixed on the lower part of the outer surface of the infusion tube;

[0015] Wherein, a bracket is fixedly installed at the lower part of the inner cavity of the feeding tube, a second spring telescopic rod is vertically and fixedly installed in the middle of the bracket, the top end of the output shaft of the second spring telescopic rod penetrates into the inner cavity of the infusion tube and is rotatably connected with the bottom surface of the sealing block, and four third spring telescopic rods are symmetrically and vertically fixedly installed on the upper surface of the bracket, and the top ends of the output shafts of the third spring telescopic rods are fixedly connected with the bottom surface of the sleeve.

[0016] In the above technical solution, preferably, the limiting member includes an annular groove opened in the inner cavity of the sleeve, a group of limiting grooves circumferentially and equidistantly opened in the middle of the inner cavity of the feeding tube, and a limiting rod fixed on the bottom surface of the tray and penetrating into the limiting grooves;

[0017] Wherein, the edge of the upper surface of the tray is hinged to the top surface of the inner cavity of the annular groove, the limiting groove is composed of upper and lower sections, the inner cavity depth of the upper section of the limiting groove is small, the inner cavity depth of the lower section of the limiting groove is large, the limiting rod is movably connected with the inner cavity of the limiting groove, and the flexible connecting pipe penetrates the bottom surface of the inner cavity of the annular groove.

[0018] In the above technical solution, preferably, a liquid discharge hole is opened on one side of the upper surface of the tray, a group of liquid discharge grooves are opened on the upper surface of the tray, the inner cavity of the liquid discharge groove is communicated with the inner cavity of the liquid discharge hole, the inner cavity of the flexible connecting pipe is communicated with the inner cavity of the liquid discharge hole, and the flexible connecting pipe is composed of an upper hose and a lower corrugated pipe connected.

[0019] In the above technical solution, preferably, the sealing mechanism includes two baffles symmetrically and rotatably installed in the bottom opening of the feeding tube, an electric telescopic rod arranged below the baffles, and a pressure sensor fixed on the left side of the outer surface of the feeding tube;

[0020] Wherein, the pressure sensor and the electric telescopic rod are both electrically connected to an external controller, and the upper and lower ends of the electric telescopic rod are respectively rotatably connected with the bottom surface of the baffle and the inner cavity of the bottom opening of the feeding tube.

[0021] In the above technical solution, preferably, an annular connecting shell communicating with the liquid storage cavity is fixedly sleeved on the upper part of the rolling block. A groove adapted to the annular connecting shell is circumferentially formed in the upper part of the inner cavity of the sleeve shell. A rotating ring is rotatably installed on the upper surface of the annular connecting shell. The bottom of the rotating ring penetrates into the inner cavity of the annular connecting shell. Two liquid inlet pipes are symmetrically communicated with the upper surface of the rotating ring, and one end of each liquid inlet pipe penetrates to the outer surface of the sleeve shell.

[0022] In the above technical solution, preferably, a support plate is fixedly installed in the upper part of the inner cavity of the feeding box. The outer surface of the driving motor is fixedly connected to the top surface of the support plate, and the reciprocating lead screw is movably connected to the support plate through a bearing.

[0023] A method for using a ternary ethylene propylene rubber mixing and feeding device includes the following steps of use:

[0024] S1: The powder material falls on the water-absorbing cotton on the pallet through the feed port and the docking port.

[0025] S2: Start the driving motor to drive the sleeve shell to drive the rolling block to move downward and rotate. When the rolling block moves downward and does not contact the powder material, drive the humidifying mechanism to operate to spray water on the powder material on the water-absorbing cotton. After the rolling block moves downward and contacts the powder material, the humidifying mechanism stops spraying water on the powder material.

[0026] S3: Under the action of the limiting member, during the downward movement of the rolling block, the pallet is driven to move downward by a certain distance and then turn downward, so that the wet powder material falls to the bottom of the inner cavity of the feeding pipe. During the downward movement of the rolling block, the bottom surface of the rolling block squeezes the powder material with the roller, and the excess water in the powder material can be removed and flows into the collecting shell through the flexible connecting pipe for collection.

[0027] S4: The rolling block continues to move downward to compress the air in the feeding pipe, increasing the pressure. When the pressure in the feeding pipe reaches the set value, the sealing mechanism is activated and opened, and the powder material coated with a water film is ejected for feeding under the push of the compressed air.

[0028] S5: During the up and down movement of the sleeve shell, the cleaning mechanism drives the scraper to clean the powder material attached to the inner wall of the feeding box, and at the same time, when the rolling block rotates, the cleaning mechanism is driven to operate to clean the powder material attached to the scraper.

[0029] Beneficial effects

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0031] 1. Through the cooperative design of structures such as a feeding box, a feeding pipe, and a discharging mechanism, the driving motor drives the sleeve to drive the rolling block to move downward and rotate. When the rolling block moves downward without contacting the powder material, it drives the humidifying mechanism to operate and spray water on the powder material falling on the absorbent cotton for humidification. After the rolling block moves downward and contacts the powder material, the humidifying mechanism stops spraying water on the powder material. When the rolling block rotates, it drives the two rollers to move circumferentially. Under the action of the limiting member, during the downward movement of the rolling block, it can drive the support plate to move downward by a certain distance and then turn downward, so that the wet powder material falls to the bottom of the inner cavity of the feeding pipe. During the downward movement of the rolling block, its bottom surface and the rollers squeeze the powder material, which can remove the excess moisture in the powder material and flow into the collection shell through the flexible connecting pipe for collection. It can enable a water film to be formed on the surface of the powder particles, increasing the weight. The continuous downward movement of the rolling block can compress the air in the feeding pipe, increasing the pressure. When the pressure in the feeding pipe reaches the set value, the sealing mechanism is opened. Under the push of the compressed air, it can spray and feed the powder particles coated with the water film. The powder particles are not easily affected by the external environmental air flow and the air flow generated by the operation of the open mill and do not float away. This improves the feeding effect of the powder material, ensures sufficient feeding, is conducive to saving resources, can improve the rubber mixing effect and the quality of the rubber finished product, and solves the problem in the prior art that under the influence of the external environmental air flow and the air flow generated by the operation of the open mill, the powder material is prone to floating away under the action of gravity and cannot all fall on the raw rubber, easily causing insufficient powder feeding amount, wasting resources, reducing the mixing effect, and affecting the quality of the rubber finished product.

[0032] 2. Through the cooperative design of structures such as a scraper, a sleeve, a rolling block, and a cleaning mechanism, under the elastic drive of the first spring telescopic rod, the scraping surface of the scraper fits against the inner wall of the feeding box. When the sleeve moves up and down, it drives the first spring telescopic rod to drive the scraper to move up and down to scrape the powder material adhering to the inner cavity wall of the feeding box. At the same time, when the rolling block rotates, it drives the elliptical groove to rotate. The rotation of the elliptical groove drives the vertical rod to move horizontally back and forth. When the vertical rod moves, it drives the knocking rod to move. With the cooperation of the annular boss, the knocking rod can swing up and down to impact the connecting frame. The vibration effect generated by the impact can be transmitted to the scraper through the extended end of the first spring telescopic rod, which can vibrate and clean the powder material adhering to the scraper, improving the cleaning effect of the powder material and avoiding waste of resources caused by the powder material remaining on the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of the present invention;

[0034] Figure 2 is a partial front sectional structural diagram of the feeding box, feeding pipe, and discharging mechanism of the present invention;

[0035] Figure 3 is a partial front sectional structural diagram of the feeding pipe and discharging mechanism of the present invention;

[0036] Figure 4 This is a front view cross-sectional structure schematic diagram of the feeding pipe, sleeve, housing, and rolling block of the present invention;

[0037] Figure 5 It is Figure 4 an enlarged schematic diagram of part A shown in the figure;

[0038] Figure 6 This is a partial front view cross-sectional structure schematic diagram of the infusion pipe, one-way pressure nozzle, one-way liquid inlet valve, sealing block, second spring telescopic rod, and crushing rod of the present invention;

[0039] Figure 7 This is a structure schematic diagram of the support plate, absorbent cotton, and flexible connecting pipe of the present invention;

[0040] Figure 8 This is a partial front view cross-sectional structure schematic diagram of the feeding pipe and sealing mechanism of the present invention;

[0041] Figure 9 It is Figure 4 an enlarged schematic diagram of part B shown in the figure;

[0042] Figure 10 It is Figure 3 an enlarged schematic diagram of part C shown in the figure.

[0043] In the figure: 1. Feeding box; 2. Feeding pipe; 3. Discharging mechanism; 31. Sleeve; 32. Housing; 33. Rolling block; 34. Roller; 35. Support plate; 36. Absorbent cotton; 37. Collection shell; 38. Scraper; 39. Driving motor; 4. Sealing mechanism; 41. Baffle; 42. Electric telescopic rod; 43. Pressure sensor; 5. Humidifying mechanism; 51. Liquid storage cavity; 52. Infusion pipe; 53. One-way pressure nozzle; 54. Annular partition block; 55. Sealing block; 56. One-way liquid inlet valve; 57. Crushing rod; 58. Second spring telescopic rod; 59. Third spring telescopic rod; 6. Cleaning mechanism; 61. First spring telescopic rod; 62. Connecting frame; 63. Oval groove; 64. Vertical rod; 65. Annular boss; 66. Knocking rod; 7. Limiting part; 71. Annular groove; 72. Limiting groove; 73. Limiting rod; 8. Feed inlet; 9. Docking port; 10. Flexible connecting pipe; 11. Reciprocating lead screw; 12. Driving rod; 13. Annular connecting shell; 14. Rotating ring; 15. Liquid inlet pipe. Detailed implementation manners

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0045] As Figures 1 to 10 shown, the present invention provides a ternary ethylene propylene rubber mixing feeding device, including a feeding box 1 fixed above an open mill through a bracket, a group of feeding pipes 2 vertically distributed front and back on the bottom surface of the feeding box 1, a feeding mechanism 3 arranged in the feeding pipes 2, and a sealing mechanism 4 arranged in the bottom openings of the feeding pipes 2;

[0046] The feeding mechanism 3 includes a sleeve 31 sliding up and down in the feeding pipe 2, a sleeve shell 32 sliding up and down through the top of the feeding pipe 2 in the sleeve 31, a rolling block 33 rotating in the sleeve shell 32, a humidifying mechanism 5 arranged at the center of the bottom surface of the rolling block 33, two roller cylinders 34 symmetrically and movably installed on the left and right sides of the bottom surface of the rolling block 33 through bearings, a group of supporting plates 35 circumferentially and equidistantly arranged in the middle of the inner cavity of the sleeve 31, a water-absorbing cotton 36 fixed on the top surface of the supporting plate 35, a collecting shell 37 fixedly sleeved on the lower part of the outer surface of the feeding pipe 2, scraping plates 38 arranged on the left and right sides of the sleeve shell 32, a cleaning mechanism 6 arranged on the top of the rolling block 33, a driving motor 39 arranged above the sleeve shell 32 for driving the sleeve shell 32 to move up and down and the rolling block 33 to rotate, and a limiting member 7 arranged on the bottom surface of the supporting plate 35 and the inner cavity of the feeding pipe 2;

[0047] Among them, the top end of the feeding pipe 2 penetrates to the lower part of the inner cavity of the feeding box 1, a group of feeding ports 8 are circumferentially and equidistantly opened on the outer surface of the feeding pipe 2, docking ports 9 adapted to the feeding ports 8 are circumferentially and equidistantly opened on the upper part of the outer surface of the sleeve 31, a flexible connecting pipe 10 for connecting with the collecting shell 37 is arranged on the bottom surface of the supporting plate 35, a supporting plate is fixedly installed in the upper part of the inner cavity of the feeding box 1, the outer surface of the driving motor 39 is fixedly connected with the top surface of the supporting plate, and the reciprocating lead screw 11 is movably connected with the supporting plate through a bearing. A liquid discharge hole is opened on one side of the upper surface of the supporting plate 35, a group of liquid discharge grooves are opened on the upper surface of the supporting plate 35, the inner cavity of the liquid discharge groove is communicated with the inner cavity of the liquid discharge hole, the inner cavity of the flexible connecting pipe 10 is communicated with the inner cavity of the liquid discharge hole, and the flexible connecting pipe 10 is composed of an upper hose and a lower corrugated pipe connected. The limiting member 7 includes an annular groove 71 opened in the inner cavity of the sleeve 31, a group of limiting grooves 72 circumferentially and equidistantly opened in the middle of the inner cavity of the feeding pipe 2, and a limiting rod 73 fixed on the bottom surface of the supporting plate 35 and penetrating into the limiting grooves 72;

[0048] Among them, the edge of the upper surface of the supporting plate 35 is hinged with the top surface of the inner cavity of the annular groove 71. The limiting groove 72 is composed of upper and lower sections. The inner cavity depth of the upper section of the limiting groove 72 is small, and the inner cavity depth of the lower section of the limiting groove 72 is large. The limiting rod 73 is movably connected with the inner cavity of the limiting groove 72, and the flexible connecting pipe 10 penetrates the bottom surface of the inner cavity of the annular groove 71.

[0049] During use, the powder material falls onto the water-absorbing cotton 36 of the pallet 35 through the feed inlet 8 and the docking port 9. The driving motor 39 drives the sleeve 32 to drive the rolling block 33 to move downward and rotate. When the rolling block 33 moves downward and does not contact the powder material, the humidifying mechanism 5 is driven to operate to spray water on the powder material on the water-absorbing cotton 36. After the rolling block 33 moves downward and contacts the powder material, the humidifying mechanism 5 stops spraying water on the powder material. When the rolling block 33 rotates, it drives the two rollers 34 to move circumferentially. Under the action of the limiting member 7, during the downward movement of the rolling block 33, it can drive the pallet 35 to move downward a certain distance and then turn downward, so that the wet powder material falls to the inner cavity bottom of the feeding pipe 2. During the downward movement of the rolling block 33, its bottom surface and the rollers 34 squeeze the powder material, which can remove the excess water in the powder material and flow into the collection shell 37 through the flexible connecting pipe 10 for collection. It can make the surface of the powder particles form a water film and increase the weight. The continuous downward movement of the rolling block 33 can compress the air in the feeding pipe 2 to increase the pressure. When the pressure in the feeding pipe 2 reaches the set value, the sealing mechanism 4 is opened. Under the push of the compressed air, the powder particles coated with the water film can be ejected for feeding. The powder particles are not easily affected by the external environmental air flow and the air flow generated by the operation of the open mill and are scattered. The feeding effect of the powder material is improved, the feeding is sufficient, resources are saved, and the rubber mixing effect and the quality of the rubber finished product can be improved.

[0050] It should be noted that during the up and down movement of the sleeve 32, the cleaning mechanism 6 drives the scraper 38 to clean the powder material attached to the inner cavity wall of the feeding box 1. At the same time, when the rolling block 33 rotates, it drives the cleaning mechanism 6 to operate, which can clean the powder material attached to the scraper 38, improving the cleaning effect of the powder material and avoiding waste of resources caused by the powder material remaining on the scraper 38.

[0051] As Figure 3 and Figure 10 shown, the cleaning mechanism 6 includes two groups of first spring telescopic rods 61 symmetrically fixed on the upper part of the outer surface of the sleeve 32. A connecting frame 62 is arranged between a group of first spring telescopic rods 61. An elliptical groove 63 is circumferentially opened on the top surface of the rolling block 33. Vertical rods 64 are symmetrically arranged vertically in the inner cavity of the elliptical groove 63. An annular boss 65 is fixed on the top surface of the rolling block 33 outside the elliptical groove 63. A knocking rod 66 is hinged to the lower part of the vertical rod 64;

[0052] Among them, the fixed end and the telescopic end of the first spring telescopic rod 61 are respectively fixedly connected to the outer surface of the sleeve 32 and the side wall of the scraping plate 38. One side of the connecting frame 62 is fixedly connected to the surface of the fixed end of the first spring telescopic rod 61, and the other side of the connecting frame 62 is slidably connected to the surface of the telescopic end of the first spring telescopic rod 61. The lower part of the vertical rod 64 is movably connected to the inner cavity of the elliptical groove 63. A support rod horizontally penetrates through the upper part of the vertical rod 64, and one end of the support rod is fixedly connected to the inner cavity of the sleeve 32. Two through channels are symmetrically opened in the upper part of the inner cavity of the sleeve 32. The bottom surface of the knocking rod 66 is movably connected to the top of the annular boss 65. One end of the knocking rod 66 penetrates outside the through channel, and one end of the knocking rod 66 is movably connected to the side of the connecting frame 62 located at the telescopic end of the first spring telescopic rod 61.

[0053] During use, driven by the elastic force of the first spring telescopic rod 61, the scraping surface of the scraping plate 38 fits against the inner circumferential wall of the feeding box 1. When the sleeve 32 moves up and down, it drives the first spring telescopic rod 61 to drive the scraping plate 38 to move up and down to scrape the powder adhering to the inner cavity wall of the feeding box 1. At the same time, when the rolling block 33 rotates, it drives the elliptical groove 63 to rotate. The rotation of the elliptical groove 63 drives the vertical rod 64 to move horizontally back and forth. When the vertical rod 64 moves, it drives the knocking rod 66 to move. With the cooperation of the annular boss 65, the knocking rod 66 can swing up and down to impact the connecting frame 62. The vibration effect generated by the impact can be transmitted to the scraping plate 38 through the extension end of the first spring telescopic rod 61, and the powder adhering to the scraping plate 38 can be vibrated and cleaned.

[0054] As Figure 4 shown, a reciprocating lead screw 11 for driving the sleeve 32 to slide up and down is fixedly installed on the end face of the output shaft of the driving motor 39. An installation groove is opened at the center of the top end of the rolling block 33. A driving rod 12 is vertically and fixedly installed on the bottom surface of the inner cavity of the installation groove. The bottom end of the reciprocating lead screw 11 extends into the inner cavity of the installation groove, and the outer surface of the driving rod 12 is vertically slidably connected to the bottom of the reciprocating lead screw 11.

[0055] During use, when the driving motor 39 operates, it drives the reciprocating lead screw 11 to rotate. The rotation of the reciprocating lead screw 11 drives the sleeve 32 to drive the rolling block 33 to slide up and down reciprocally, and the rotation of the reciprocating lead screw 11 drives the driving rod 12 to drive the rolling block 33 to rotate, enabling the rolling block 33 to rotate while moving up and down.

[0056] As Figure 4 、 Figure 5 、 Figure 6 and Figure 10As shown in the figure, the humidifying mechanism 5 includes a liquid storage cavity 51 formed in the rolling block 33, a liquid delivery pipe 52 vertically fixed at the center of the bottom surface of the rolling block 33 and communicating with the inner cavity of the liquid storage cavity 51, two one-way pressure spray nozzles 53 symmetrically communicated with the upper part of the outer surface of the liquid delivery pipe 52, an annular partition block 54 fixed in the inner cavity of the liquid delivery pipe 52 and located below the two one-way pressure spray nozzles 53, a sealing block 55 sliding up and down in the liquid delivery pipe 52, a one-way liquid inlet valve 56 arranged in the upper port of the liquid delivery pipe 52 for guiding the liquid in the liquid storage cavity 51 into the inner cavity of the liquid delivery pipe 52, and a group of material crushing rods 57 circumferentially fixed on the lower part of the outer surface of the liquid delivery pipe 52;

[0057] Among them, a bracket is fixedly installed at the lower part of the inner cavity of the feeding pipe 2. A second spring telescopic rod 58 is vertically and fixedly installed in the middle of the bracket. The top end of the output shaft of the second spring telescopic rod 58 penetrates into the inner cavity of the liquid delivery pipe 52 and is rotatably connected to the bottom surface of the sealing block 55. Four third spring telescopic rods 59 are symmetrically and vertically fixedly installed on the upper surface of the bracket. The top ends of the output shafts of the third spring telescopic rods 59 are fixedly connected to the bottom surface of the sleeve 31. An annular connecting shell 13 communicating with the liquid storage cavity 51 is fixedly sleeved on the upper part of the rolling block 33. A groove adapted to the annular connecting shell 13 is circumferentially formed in the upper part of the inner cavity of the sleeve 32. A rotating ring 14 is rotatably installed on the upper surface of the annular connecting shell 13. The bottom of the rotating ring 14 penetrates into the inner cavity of the annular connecting shell 13. Two liquid inlet pipes 15 are symmetrically communicated with the upper surface of the rotating ring 14. One end of the liquid inlet pipe 15 penetrates to the outer surface of the sleeve 32.

[0058] During use, when the rolling block 33 moves downward and does not contact the powder material, the downward movement of the rolling block 33 drives the liquid delivery pipe 52 to move downward. Under the elastic force of the second spring telescopic rod 58, the sealing block 55 squeezes the inner cavity of the liquid delivery pipe 52. The liquid in the inner cavity of the liquid delivery pipe 52 is squeezed and sprayed onto the powder material through the one-way pressure spray nozzles 53 for humidification. When the rolling block 33 moves downward and contacts the powder material, the downward movement of the rolling block 33 drives the liquid delivery pipe 52 to move downward. The downward movement of the liquid delivery pipe 52 drives the bottom surface of the annular partition block 54 to contact the upper surface of the sealing block 55, so that the sealing block 55 stops squeezing the inner cavity of the liquid delivery pipe 52, thereby being able to stop the one-way pressure spray nozzles 53 from spraying water to humidify the powder material. Moreover, when the rolling block 33 rotates, the material crushing rods 57 are driven to rotate through the liquid delivery pipe 52. When the humidified and squeezed powder material falls to the bottom of the inner cavity of the feeding pipe 2, the rotating material crushing rods 57 can crush the powder material.

[0059] As Figure 8 shown, the sealing mechanism 4 includes two baffles 41 symmetrically and rotatably installed in the bottom opening of the feeding pipe 2, an electric telescopic rod 42 arranged below the baffles 41, and a pressure sensor 43 fixed on the left side of the outer surface of the feeding pipe 2;

[0060] Among them, the pressure sensor 43 and the electric telescopic rod 42 are both electrically connected to an external controller. The upper and lower ends of the electric telescopic rod 42 are respectively rotatably connected to the bottom surface of the baffle 41 and the inner cavity of the bottom opening of the feeding pipe 2.

[0061] During use, the continuous downward movement of the rolling block 33 can compress the air in the feeding pipe 2 to increase the pressure. When the pressure in the feeding pipe 2 reaches the set value, the pressure sensor 43 transmits a signal, which can control the operation of the electric telescopic rod 42 to open the two baffles 41.

[0062] A method for using a ternary ethylene propylene rubber mixing and feeding device includes the following steps:

[0063] S1: The powder material falls on the water-absorbing cotton 36 of the pallet 35 through the feed port 8 and the docking port 9.

[0064] S2: When the driving motor 39 is started and operates, the reciprocating lead screw 11 rotates. The rotation of the reciprocating lead screw 11 drives the sleeve 32 to drive the rolling block 33 to slide downward, and the rotation of the reciprocating lead screw 11 drives the driving rod 12 to drive the rolling block 33 to rotate, so that the rolling block 33 rotates while moving up and down. When the rolling block 33 moves downward and does not contact the powder material, the downward movement of the rolling block 33 drives the infusion tube 52 to move downward. Under the elastic force of the second spring telescopic rod 58, the sealing block 55 squeezes the inner cavity of the infusion tube 52, and the liquid in the inner cavity of the infusion tube 52 is squeezed and sprayed onto the powder material through the one-way pressure nozzle 53 for humidification. When the rolling block 33 moves downward and contacts the powder material, the downward movement of the rolling block 33 drives the infusion tube 52 to move downward. The downward movement of the infusion tube 52 drives the bottom surface of the annular partition block 54 to contact the upper surface of the sealing block 55, so that the sealing block 55 stops squeezing the inner cavity of the infusion tube 52, thereby stopping the one-way pressure nozzle 53 from spraying water on the powder material for humidification.

[0065] S3: Under the action of the limiting member 7, during the downward movement of the rolling block 33, the pallet 35 is driven to move downward by a certain distance and then turn downward, so that the wet powder material falls to the bottom of the inner cavity of the feeding pipe 2. During the downward movement of the rolling block 33, the bottom surface of the rolling block 33 and the roller 34 squeeze the powder material, and the excess water in the powder material can be removed and flows into the collection shell 37 through the flexible connecting pipe 10 for collection.

[0066] S4: The continuous downward movement of the rolling block 33 compresses the air in the feeding pipe 2 to increase the pressure. When the pressure in the feeding pipe 2 reaches the set value, the pressure sensor 43 transmits a signal, which can control the operation of the electric telescopic rod 42 to open the two baffles 41, and the powder particles coated with a water film are ejected and fed under the push of the compressed air.

[0067] S5: Driven by the elastic force of the first spring telescopic rod 61, the scraping surface of the scraper 38 fits against the inner circumferential wall of the feeding box 1. When the housing 32 moves up and down, it drives the first spring telescopic rod 61 to drive the scraper 38 to move up and down to scrape the powder adhering to the inner cavity wall of the feeding box 1. At the same time, when the rolling block 33 rotates, it drives the elliptical groove 63 to rotate. The rotation of the elliptical groove 63 drives the vertical rod 64 to move horizontally back and forth. When the vertical rod 64 moves, it drives the knocking rod 66 to move. With the cooperation of the annular boss 65, the knocking rod 66 can swing up and down to impact the connecting frame 62. The vibration effect generated by the impact can be transmitted to the scraper 38 through the extension end of the first spring telescopic rod 61, and the powder adhering to the scraper 38 can be vibration-cleaned.

[0068] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0069] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An EPDM rubber mixing and feeding equipment, characterized in that: It comprises a feeding box (1) fixed above an open mixing mill via a bracket, a group of feeding pipes (2) vertically distributed front and rear on the bottom surface of the feeding box (1), a material discharge mechanism (3) arranged in the feeding pipes (2), and a sealing mechanism (4) arranged in the bottom opening of the feeding pipes (2); The discharge mechanism (3) comprises a sleeve (31) that slides up and down in the feeding pipe (2), a sleeve shell (32) that slides up and down in the sleeve (31) and penetrates the top of the feeding pipe (2), a rolling block (33) that rotates in the sleeve shell (32), a humidifying mechanism (5) arranged at the center of the bottom surface of the rolling block (33), two rollers (34) symmetrically mounted on the left and right sides of the bottom surface of the rolling block (33) through bearings, and a group of support plates (35) that are equidistantly arranged in the circumferential direction in the middle of the inner cavity of the sleeve (31). ), a water-absorbing cotton (36) fixed on the top surface of the support plate (35), a collecting shell (37) fixedly sleeved on the lower part of the outer surface of the feeding pipe (2), scrapers (38) arranged on the left and right sides of the casing (32), a cleaning mechanism (6) arranged on the top of the rolling block (33), a driving motor (39) arranged above the casing (32) for driving the casing (32) to move up and down and the rolling block (33) to rotate, and a stopper (7) arranged on the bottom surface of the support plate (35) and the inner cavity of the feeding pipe (2); The humidifying mechanism (5) comprises a liquid storage cavity (51) provided on the rolling block (33), a liquid infusion tube (52) vertically fixed at the center of the bottom surface of the rolling block (33) and connected to the inner cavity of the liquid storage cavity (51), two one-way pressure nozzles (53) symmetrically connected to the upper part of the outer surface of the liquid infusion tube (52), an annular spacer (54) fixed in the inner cavity of the liquid infusion tube (52) and located below the two one-way pressure nozzles (53), a sealing block (55) sliding up and down in the liquid infusion tube (52), a one-way liquid inlet valve (56) provided in the upper port of the liquid infusion tube (52) and used for introducing the liquid in the liquid storage cavity (51) into the inner cavity of the liquid infusion tube (52), and a group of material breaking rods (57) circumferentially fixed to the lower part of the outer surface of the liquid infusion tube (52); A bracket is fixedly installed at the lower part of the inner cavity of the feeding tube (2), a second spring telescopic rod (58) is vertically fixedly installed in the middle part of the bracket, the top end of the output shaft of the second spring telescopic rod (58) penetrates into the inner cavity of the infusion tube (52) and is rotatably connected to the bottom surface of the sealing block (55), four third spring telescopic rods (59) are symmetrically and vertically fixedly installed on the upper surface of the bracket, the top end of the output shaft of the third spring telescopic rod (59) is fixedly connected to the bottom surface of the sleeve (31), the top end of the feeding tube (2) penetrates to the lower part of the inner cavity of the feeding box (1), a group of feeding ports (8) are equidistantly opened on the outer surface of the feeding tube (2), and docking ports (9) compatible with the feeding ports (8) are equidistantly opened on the upper part of the outer surface of the sleeve (31), and the bottom surface of the support plate (35) is provided with a soft connecting pipe (10) for connecting to the collection shell (37); The limiting member (7) comprises an annular groove (71) formed in the inner cavity of the sleeve (31), a group of limiting grooves (72) formed at equal intervals in the circumferential direction in the middle of the inner cavity of the feeding pipe (2), and a limiting rod (73) fixed to the bottom surface of the support plate (35) and penetrating into the limiting groove (72); The edge of the upper surface of the support plate (35) is hinged to the top surface of the inner cavity of the annular groove (71); the limiting groove (72) consists of an upper and lower section; the inner cavity depth of the upper section of the limiting groove (72) is small, and the inner cavity depth of the lower section of the limiting groove (72) is large; the limiting rod (73) is movably connected to the inner cavity of the limiting groove (72); and the soft connecting tube (10) penetrates the inner cavity bottom surface of the annular groove (71).

2. The EPDM rubber mixing and feeding equipment according to claim 1, characterized in that: The cleaning mechanism (6) comprises two groups of first spring telescopic rods (61) fixed symmetrically to the upper part of the outer surface of the housing (32), a connecting frame (62) being arranged between the first spring telescopic rods (61), an elliptical groove (63) circumferentially arranged on the top surface of the rolling block (33), a vertical rod (64) symmetrically arranged vertically in the inner cavity of the elliptical groove (63), an annular boss (65) fixed to the top surface of the rolling block (33) and located outside the elliptical groove (63), and a knocking rod (66) hinged to the lower part of the vertical rod (64); The fixed end and the telescopic end of the first spring telescopic rod (61) are respectively fixedly connected to the outer surface of the casing (32) and the side wall of the scraper (38); one side of the connecting frame (62) is fixedly connected to the fixed end surface of the first spring telescopic rod (61); the other side of the connecting frame (62) is slidably connected to the telescopic end surface of the first spring telescopic rod (61); the lower part of the vertical rod (64) is movably connected to the inner cavity of the elliptical groove (63); a support rod is laterally penetrated through the upper part of the vertical rod (64); one end of the support rod is fixedly connected to the inner cavity of the casing (32); two through channels are symmetrically provided in the upper part of the inner cavity of the casing (32); the bottom surface of the knocking rod (66) is movably connected to the top of the annular boss (65); one end of the knocking rod (66) penetrates outside the through channel; and one end of the knocking rod (66) is movably connected to one side of the connecting frame (62) located at the telescopic end of the first spring telescopic rod (61).

3. The EPDM rubber mixing and feeding equipment according to claim 2, characterized in that: A reciprocating screw (11) for driving the casing (32) to slide up and down is fixedly mounted on the end face of the output shaft of the driving motor (39); a mounting groove is provided at the center of the top end of the rolling block (33); a driving rod (12) is vertically fixedly mounted on the bottom surface of the inner cavity of the mounting groove; the bottom end of the reciprocating screw (11) extends into the inner cavity of the mounting groove, and the outer surface of the driving rod (12) is vertically slidably connected to the bottom of the reciprocating screw (11).

4. The EPDM rubber mixing and feeding equipment according to claim 3, characterized in that: A drainage hole is provided on one side of the upper surface of the support plate (35), a group of drainage grooves are provided on the upper surface of the support plate (35), the inner cavity of the drainage grooves is connected to the inner cavity of the drainage hole, the inner cavity of the soft connecting pipe (10) is connected to the inner cavity of the drainage hole, and the soft connecting pipe (10) is composed of an upper hose connected to a lower bellows.

5. The EPDM rubber mixing and feeding equipment according to claim 1, characterized in that: The sealing mechanism (4) comprises two baffles (41) symmetrically mounted in the bottom opening of the feeding pipe (2), an electric telescopic rod (42) arranged below the baffles (41), and a pressure sensor (43) fixed to the left side of the outer surface of the feeding pipe (2); The pressure sensor (43) and the electric telescopic rod (42) are both electrically connected to an external controller, and the upper and lower ends of the electric telescopic rod (42) are rotatably connected to the bottom surface of the baffle (41) and the inner cavity of the bottom opening of the feeding pipe (2), respectively.

6. The EPDM rubber mixing and feeding equipment according to claim 3, characterized in that: The upper fixed sleeve of the rolling block (33) is provided with an annular connecting shell (13) connected to the liquid storage chamber (51); the upper inner cavity of the sleeve shell (32) is provided with a groove adapted to the annular connecting shell (13) in the circumferential direction; a rotating ring (14) is rotatably mounted on the upper surface of the annular connecting shell (13); the bottom of the rotating ring (14) penetrates into the inner cavity of the annular connecting shell (13); and the upper surface of the rotating ring (14) is symmetrically connected to two liquid inlet pipes (15), and one end of the liquid inlet pipe (15) penetrates to the outer surface of the sleeve shell (32).

7. The EPDM rubber mixing and feeding equipment according to claim 3, characterized in that: A support plate is fixedly mounted on the upper portion of the inner cavity of the feeding box (1), the outer surface of the drive motor (39) is fixedly connected to the top surface of the support plate, and the reciprocating screw rod (11) is movably connected to the support plate via a bearing.

8. A method for using the EPDM rubber mixing and feeding equipment according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1: The powder falls onto the absorbent cotton (36) of the support plate (35) through the feed port (8) and the docking port (9); S2: starting the driving motor (39) to drive the casing (32) to drive the rolling block (33) to move downward and rotate, and when the rolling block (33) moves downward and does not come into contact with the powder, driving the humidifying mechanism (5) to operate to spray water on the powder on the absorbent cotton (36) to humidify the powder, and after the rolling block (33) moves downward and comes into contact with the powder, the humidifying mechanism (5) stops spraying water on the powder to humidify the powder; S3: Under the action of the limiter (7), the rolling block (33) drives the support plate (35) to move downward for a certain distance and then flip downward during the process of descending, so that the wet powder falls to the bottom of the inner cavity of the feeding pipe (2). During the process of descending, the bottom surface of the rolling block (33) and the roller (34) squeeze the powder, thereby removing excess water from the powder and allowing it to flow into the collection shell (37) through the soft connecting pipe (10) for collection; S4: The rolling block (33) continues to descend to compress the air in the feeding pipe (2) to increase the pressure. When the pressure in the feeding pipe (2) reaches a set value, the sealing mechanism (4) is activated and opened, and the powder particles coated with the water film are sprayed and fed under the push of the compressed air; S5: During the upward and downward movement of the casing (32), the cleaning mechanism (6) drives the scraper (38) to clean the powder attached to the inner wall of the feeding box (1). At the same time, the rolling block (33) rotates to drive the cleaning mechanism (6) to clean the powder attached to the scraper (38).

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