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

Abstract

The invention belongs to the technical field of rubber production, and discloses EPDM rubber mixing and feeding equipment and a method thereof.The EPDM rubber mixing and feeding equipment comprises a feeding box fixed above an open mill through a support and a set of feeding pipes vertically distributed on the bottom face of the feeding box front and back; the discharging mechanism is arranged in the feeding pipe; and the sealing mechanism is arranged in an opening in the bottom of the feeding pipe. Through the cooperative design of the feeding box, the feeding pipe and the discharging mechanism, the weight of a water film formed by coating the surfaces of powder particles can be increased, the powder particles coated with the water film are subjected to jet feeding, the feeding effect is good, resources are saved, the rubber mixing effect and the quality of a rubber finished product are improved, and the production cost is reduced. The problems that under the influence of air flow generated by external environment air flow and operation of the open mill and under the action of gravity, powder falls off, drifts away easily and cannot fall on raw rubber completely, the feeding amount of the powder is insufficient easily, resources are wasted, the mixing effect is reduced, and the quality of finished rubber products is affected are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of rubber production, and in particular relates to EPDM rubber mixing and feeding equipment and a method thereof. Background Art

[0002] EPDM rubber is a copolymer of ethylene, propylene and a small amount of non-conjugated diene. It is a type of EPDM rubber. When ethylene is mixed through an open mill, it is usually necessary to add a variety of powdered blending agents (such as accelerators, zinc oxide, carbon black, white carbon black, calcium carbonate, etc.) to the raw rubber in the open mill through a feeding equipment to improve the performance of the rubber.

[0003] In the prior art, a Chinese patent discloses an open mixing mill for rubber refining (publication number: CN214773199U), which is provided with an automatic feeding device to add the rubber into the feeding barrel. When feeding is required, the PCL control cabinet controls the solenoid valve to discharge the material, avoiding the safety hazards caused by manual feeding.

[0004] However, there are still corresponding disadvantages in actual use: when the above-mentioned patent is used and the powder needs to be added to the feeding bucket, the powder is easily scattered due to the influence of the air flow in the external environment and the airflow generated by the operation of the mixing mill. It cannot fall completely on the raw rubber, which may cause insufficient powder feeding, waste resources, reduce the mixing effect, and affect the quality of the rubber product. Summary of the invention

[0005] Technical issues solved In order to solve the problems raised in the above-mentioned background technology, the present invention provides an EPDM rubber mixing and feeding equipment and method thereof, which has the advantages of convenient operation, stable feeding and resource saving. Through the coordinated design of structures such as a feeding box, a feeding pipe and a discharge mechanism, powder particles coated with a water film can be sprayed and fed. The powder particles are not easily affected by the flow of external environmental air and the airflow generated by the operation of an open mixing mill and thus dispersed, thereby improving the feeding effect of the powder. The feeding is sufficient, which is convenient for saving resources and improving the rubber mixing effect and the quality of the rubber finished product.

[0006] Technical Solution To achieve the above object, the present invention provides the following technical solution: an EPDM rubber mixing and feeding device, comprising a feeding box fixed on the top of an open mixing mill by a bracket, a group of feeding pipes vertically distributed on the bottom surface of the feeding box, a discharge mechanism arranged in the feeding pipes, and a sealing mechanism arranged in the bottom opening of the feeding pipes; The discharging mechanism includes a sleeve that slides up and down in the feeding pipe, a sleeve that slides up and down in the sleeve and penetrates the top of the feeding pipe, a rolling block that rotates in the sleeve, a humidifying mechanism arranged at the center of the bottom surface of the rolling block, two rollers symmetrically installed on the left and right sides of the bottom surface of the rolling block through bearings, a group of supporting plates equidistantly arranged in the middle of the inner cavity of the sleeve, absorbent cotton fixed on the top surface of the supporting plate, a collecting shell fixedly sleeved on the lower part of the outer surface of the feeding pipe, scrapers arranged on the left and right sides of the sleeve, a cleaning mechanism arranged on the top of the rolling block, a driving motor arranged above the sleeve for driving the sleeve to move up and down and the rolling block to rotate, and a limiter arranged on the bottom surface of the supporting plate and the inner cavity of the feeding pipe; 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 evenly opened on the outer surface of the feeding pipe, docking ports matching the feeding ports are circumferentially and evenly opened on the upper part of the outer surface of the sleeve, and a soft connecting tube for connecting to the collecting shell is provided on the bottom surface of the support plate.

[0007] In the above technical solution, preferably, the cleaning mechanism includes two groups of first spring telescopic rods fixed symmetrically to the upper part of the outer surface of the housing, a connecting frame is arranged between one group of the first spring telescopic rods, an elliptical groove is circumferentially arranged on the top surface of the rolling block, a vertical rod is symmetrically arranged in the inner cavity of the elliptical groove, an annular boss fixed to the top surface of the rolling block and located outside the elliptical groove, and a knocking rod is hinged at the lower part of the vertical rod; Among them, the fixed end and the telescopic end of the first spring telescopic rod are fixedly connected to the outer surface of the casing and the side wall of the scraper respectively, one side of the connecting frame is fixedly connected to the fixed end surface of the first spring telescopic rod, and the other side of the connecting frame is slidably connected to the telescopic end surface of the first spring telescopic rod, the lower part of the vertical rod is movably connected to the inner cavity of the elliptical groove, the upper part of the vertical rod is horizontally penetrated by a support rod, one end of the support rod is fixedly connected to the inner cavity of the casing, and two through channels are symmetrically provided on the upper part of the inner cavity of the casing, the bottom surface of the knocking rod is movably connected to the top of the annular boss, one end of the knocking rod penetrates to the outside of the through channel, and one end of the knocking rod is movably connected to the connecting frame at one side of the telescopic end of the first spring telescopic rod.

[0008] In the above technical solution, preferably, a reciprocating screw for driving the housing to slide up and down is fixedly installed on the end face of the output shaft of the driving motor, a mounting 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 mounting groove, the bottom end of the reciprocating screw extends into the inner cavity of the mounting groove, and the outer surface of the driving rod is vertically slidably connected to the bottom of the reciprocating screw.

[0009] In the above technical solution, preferably, the humidifying mechanism includes a liquid storage cavity opened on the rolling block, a liquid infusion tube vertically fixed at the center of the bottom surface of the rolling block and connected to the inner cavity of the liquid storage cavity, two one-way pressure nozzles symmetrically connected to the upper part of the outer surface of the liquid infusion tube, an annular spacer fixed in the inner cavity of the liquid infusion tube and located below the two one-way pressure nozzles, a sealing block sliding up and down in the liquid infusion tube, a one-way liquid inlet valve arranged in the upper port of the liquid infusion tube for introducing the liquid in the liquid storage cavity into the inner cavity of the liquid infusion tube, and a group of crushing rods circumferentially fixed to the lower part of the outer surface of the liquid infusion tube; Among them, a bracket is fixedly installed at the lower part of the inner cavity of the feeding tube, a second spring telescopic rod is vertically fixedly installed in the middle part 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 to 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 end of the output shaft of the third spring telescopic rod is fixedly connected to the bottom surface of the sleeve.

[0010] 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 opened equidistantly in the circumferential direction in the middle of the inner cavity of the feeding pipe, and a limiting rod fixed on the bottom surface of the support plate and penetrating into the limiting groove; Among them, the edge of the upper surface of the support plate is hinged to the top surface of the inner cavity of the annular groove, the limit groove consists of two sections, the upper section of the limit groove has a smaller inner cavity depth, and the lower section of the limit groove has a larger inner cavity depth, the limit rod is movably connected to the inner cavity of the limit groove, and the soft connecting tube penetrates the bottom surface of the inner cavity of the annular groove.

[0011] In the above technical solution, preferably, a drainage hole is provided on one side of the upper surface of the support plate, and a group of drainage grooves are provided on the upper surface of the support plate, the inner cavity of the drainage grooves is connected with the inner cavity of the drainage hole, the inner cavity of the soft connecting pipe is connected with the inner cavity of the drainage hole, and the soft connecting pipe is composed of an upper hose connected to a lower corrugated pipe.

[0012] In the above technical solution, preferably, the sealing mechanism includes two baffles symmetrically rotatably mounted in the bottom opening of the feeding pipe, an electric telescopic rod arranged below the baffles, and a pressure sensor fixed to the left side of the outer surface of the feeding pipe; 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 rotatably connected to the bottom surface of the baffle and the inner cavity of the bottom opening of the feeding pipe respectively.

[0013] In the above technical solution, preferably, the upper fixed sleeve of the rolling block is provided with an annular connecting shell connected to the liquid storage chamber, the upper part of the inner cavity of the sleeve is circumferentially provided with a groove adapted to the annular connecting shell, and 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, and the upper surface of the rotating ring is symmetrically connected to two liquid inlet pipes, and one end of the liquid inlet pipe penetrates to the outer surface of the sleeve.

[0014] In the above technical solution, preferably, a support plate is fixedly installed on the upper part of the inner cavity of the feeding box, the outer surface of the drive motor is fixedly connected to the top surface of the support plate, and the reciprocating screw is movably connected to the support plate through a bearing.

[0015] A method for using an EPDM rubber mixing and feeding device, comprising the following steps: S1: The powder falls onto the absorbent cotton on the support plate through the feed port and the docking port; S2: starting the driving motor to drive the casing to drive the rolling block to move downward and rotate, and when the rolling block moves downward and does not contact the powder, driving the humidifying mechanism to spray water to humidify the powder on the absorbent cotton, and after the rolling block moves downward and contacts the powder, the humidifying mechanism stops spraying water to humidify the powder; S3: Under the action of the limiting member, the rolling block drives the support plate to move down a certain distance and then flips downward during the process of descending, so that the wet powder falls to the bottom of the inner cavity of the feeding pipe. During the process of descending, the bottom surface of the rolling block and the roller squeeze the powder, which can remove excess water in the powder and flow into the collection shell through the soft connecting pipe for collection; S4: The rolling block continues to descend to compress the air in the feeding pipe to increase the pressure. When the pressure in the feeding pipe reaches a set value, the sealing mechanism is activated and opened, and the powder particles coated with the water film are sprayed and fed under the push of compressed air; S5: When the sleeve shell moves up and down, the cleaning mechanism drives the scraper to clean the powder attached to the inner wall of the feeding box. At the same time, the rolling block drives the cleaning mechanism to operate and clean the powder attached to the scraper when the rolling block rotates.

[0016] Beneficial Effects Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention adopts the coordinated design of the feeding box, the feeding pipe, the discharge mechanism and other structures. The driving motor drives the casing to drive the rolling block to move downward and rotate. When the rolling block moves downward and does not contact the powder, it drives the humidifying mechanism to operate and spray water to humidify the powder falling on the absorbent cotton. After the rolling block moves downward and contacts the powder, the humidifying mechanism stops spraying water to humidify the powder. When the rolling block rotates, it drives the two rollers to move circumferentially. Under the action of the limiter, the rolling block can drive the supporting plate to move down a distance and then flip downward during the descending process, so that the wet powder falls to the bottom of the inner cavity of the feeding pipe. During the descent of the rolling block, its bottom surface and the roller squeeze the powder, which can remove excess water in the powder and flow into the collecting shell through the soft connecting tube for collection, so that the surface of the powder particles can be coated with a water film with weight. The rolling block continuously descends, which can compress the air in the feeding pipe and increase the pressure. When the pressure in the feeding pipe reaches the set value, the sealing mechanism opens, and under the push of compressed air, the powder particles coated with the water film can be sprayed and fed. The powder particles are not easily affected by the flow of air in the external environment and the airflow generated by the operation of the open mixing mill and are scattered, which improves the feeding effect of the powder. The feeding is sufficient, which is convenient for 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 the powder is easily scattered and cannot fall completely on the raw rubber due to the influence of the flow of air in the external environment and the airflow generated by the operation of the open mixing mill, which easily causes insufficient powder feeding, wastes resources, reduces the mixing effect, and affects the quality of the rubber finished product.

[0017] 2. The present invention adopts the coordinated design of structures such as the scraper, the shell, the rolling block, and the cleaning mechanism. Driven by the elastic force of the first spring telescopic rod, the scraping surface of the scraper fits against the inner wall of the feeding box. When the shell moves up and down, it drives the first spring telescopic rod to drive the scraper to move up and down to scrape off the powder attached to the inner 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 back and forth horizontally. 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 hit 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, so that the powder attached to the scraper can be vibrated and cleaned, thereby improving the effect of cleaning the powder and avoiding the waste of resources caused by the powder remaining on the scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a partial front cross-sectional structural schematic diagram of the feeding box, feeding pipe and discharge mechanism of the present invention; Figure 3 It is a partial front cross-sectional structural schematic diagram of the feeding pipe and the discharge mechanism of the present invention; Figure 4It is a front cross-sectional structural schematic diagram of the feeding pipe, sleeve, casing, and rolling block of the present invention; Figure 5 for Figure 4 An enlarged schematic diagram of part A is shown; Figure 6 It is a partial front cross-sectional structural schematic diagram of the infusion tube, the one-way pressure nozzle, the one-way liquid inlet valve, the sealing block, the second spring telescopic rod, and the crushing rod of the present invention; Figure 7 It is a schematic diagram of the structure of the support plate, absorbent cotton and soft connecting pipe of the present invention; Figure 8 It is a partial front cross-sectional structural schematic diagram of the feeding pipe and the sealing mechanism of the present invention; Fig. 9 for Figure 4 An enlarged schematic diagram of portion B is shown; Fig.10 for Figure 3 An enlarged schematic diagram of part C is shown.

[0019] In the figure: 1. feeding box; 2. feeding pipe; 3. discharging mechanism; 31. sleeve; 32. sleeve shell; 33. rolling block; 34. roller; 35. support plate; 36. absorbent cotton; 37. collecting shell; 38. scraper; 39. driving motor; 4. sealing mechanism; 41. baffle; 42. electric telescopic rod; 43. pressure sensor; 5. humidifying mechanism; 51. liquid storage chamber; 52. infusion tube; 53. one-way pressure nozzle; 54. annular spacer; 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. Elliptical groove; 64. Vertical rod; 65. Annular boss; 66. Knocking rod; 7. Limiting piece; 71. Annular groove; 72. Limiting groove; 73. Limiting rod; 8. Feeding port; 9. Docking port; 10. Flexible connecting pipe; 11. Reciprocating screw rod; 12. Driving rod; 13. Annular connecting shell; 14. Rotating ring; 15. Liquid inlet pipe. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] like Figures 1 to 10As shown, the present invention provides an EPDM rubber mixing and feeding device, comprising a feeding box 1 fixed on the top of an open mixing mill by a bracket, a group of feeding pipes 2 vertically distributed on the bottom surface of the feeding box 1, a discharge mechanism 3 arranged in the feeding pipe 2, and a sealing mechanism 4 arranged in the bottom opening of the feeding pipe 2; The discharge mechanism 3 includes 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, a group of supporting plates 35 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, a scraper 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 limiter 7 arranged on the bottom surface of the supporting plate 35 and the inner cavity of the feeding pipe 2; Among them, the top end of the feeding pipe 2 penetrates to the lower part of the inner cavity of the feeding box 1, and a group of feeding ports 8 are equidistantly opened on the outer surface of the feeding pipe 2 in the circumferential direction, and the upper part of the outer surface of the sleeve 31 is equidistantly opened with docking ports 9 adapted to the feeding ports 8. The bottom surface of the support plate 35 is provided with a soft connecting pipe 10 for connecting with the collection shell 37. A support plate is fixedly installed on the upper part of the inner cavity of the feeding box 1, and the outer surface of the driving motor 39 is fixedly connected to the top surface of the support plate, and the reciprocating screw 11 is movably connected to the support plate through a bearing. A drainage hole is provided on one side of the upper surface of the support plate 35, and a group of drainage grooves are provided on the upper surface of the support plate 35. The inner cavity of the drainage groove is communicated with the inner cavity of the drainage hole, and the inner cavity of the soft connecting pipe 10 is communicated with the inner cavity of the drainage hole, and the soft connecting pipe 10 is composed of an upper hose and a lower corrugated pipe connected. The limiting member 7 includes an annular groove 71 provided in the inner cavity of the sleeve 31, a group of limiting grooves 72 equidistantly provided in the middle of the inner cavity of the feeding pipe 2 in the circumferential direction, and a limiting rod 73 fixed on the bottom surface of the support plate 35 and penetrating into the limiting groove 72; Among them, 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 is composed 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.

[0022] When in use, the powder falls on the absorbent cotton 36 of the support plate 35 through the feed port 8 and the docking port 9, and the driving motor 39 drives the housing 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, it drives the humidifying mechanism 5 to spray water on the absorbent cotton 36 for humidification. After the rolling block 33 moves downward and contacts the powder, the humidifying mechanism 5 stops spraying water on the powder for humidification. When the rolling block 33 rotates, it drives the two rollers 34 to move circumferentially. Under the action of the limiter 7, the rolling block 33 can drive the support plate 35 to move down a distance and then flip downward during the descent process, so that the wet powder falls to the bottom of the inner cavity of the feeding pipe 2. During the descent of the rolling block 33, The bottom surface and the roller 34 squeeze the powder to remove excess water in the powder, which flows into the collecting shell 37 through the soft connecting tube 10 for collection, and can form a water film on the surface of the powder particles to increase their weight. The rolling block 33 continues to descend and 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 opens, and under the push of compressed air, the powder particles coated with the water film can be sprayed and fed. The powder particles are not easily affected by the flow of external environmental air and the airflow generated by the operation of the mixing mill and are not easily scattered, which improves the feeding effect of the powder. The feeding is sufficient, which is convenient for saving resources and can improve the rubber mixing effect and the quality of the rubber products.

[0023] It should be noted that when the shell 32 moves up and down, 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 drives the cleaning mechanism 6 to operate when it rotates, so as to clean the powder attached to the scraper 38, thereby improving the effect of cleaning the powder and avoiding the waste of resources caused by the powder remaining on the scraper 38.

[0024] like Figure 3 and Fig.10 As shown, the cleaning mechanism 6 includes two groups of first spring telescopic rods 61 fixed symmetrically on the upper part of the outer surface of the sleeve 32, a connecting frame 62 is arranged between the first spring telescopic rods 61, an elliptical groove 63 is circumferentially arranged on the top surface of the rolling block 33, a vertical rod 64 is symmetrically arranged vertically in the inner cavity of the elliptical groove 63, an annular boss 65 fixed on the top surface of the rolling block 33 and located outside the elliptical groove 63, and a knocking rod 66 is hinged at the lower part of the vertical rod 64; Among them, the fixed end and the telescopic end of the first spring telescopic rod 61 are fixedly connected to the outer surface of the sleeve shell 32 and the side wall of the scraper 38 respectively, one side of the connecting frame 62 is fixedly connected to the fixed end surface of the first spring telescopic rod 61, and 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, and the upper part of the vertical rod 64 is horizontally penetrated by a support rod, one end of the support rod is fixedly connected to the inner cavity of the sleeve shell 32, and two through channels are symmetrically opened in the upper part of the inner cavity of the sleeve shell 32. The bottom surface of the knocking rod 66 is movably connected to the top of the annular boss 65, and one end of the knocking rod 66 penetrates to the outside of the through channel, and one end of the knocking rod 66 is movably connected to the connecting frame 62 on one side of the telescopic end of the first spring telescopic rod 61.

[0025] When in use, driven by the elastic force of the first spring telescopic rod 61, the scraping surface of the scraper 38 fits against the inner wall of the feeding box 1, and the sleeve 32 moves up and down, driving the first spring telescopic rod 61 to drive the scraper 38 to move up and down to scrape off the powder attached to the inner wall of the feeding box 1. At the same time, the rolling block 33 rotates, driving the elliptical groove 63 to rotate, and the rotation of the elliptical groove 63 drives the vertical rod 64 to move back and forth horizontally. 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 extended end of the first spring telescopic rod 61, and the powder attached to the scraper 38 can be vibrated and cleaned.

[0026] like Figure 4 As shown, a reciprocating screw 11 for driving the housing 32 to slide up and down is fixedly installed on the end face of the output shaft of the driving motor 39, a mounting groove is opened at the center of the top end of the rolling block 33, a driving rod 12 is vertically fixedly installed 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.

[0027] When in use, the driving motor 39 drives the reciprocating screw 11 to rotate, and the reciprocating screw 11 rotates to drive the sleeve 32 to drive the rolling block 33 to slide back and forth up and down, and the reciprocating screw 11 rotates to drive the driving rod 12 to drive the rolling block 33 to rotate, so that the rolling block 33 can rotate while moving up and down.

[0028] like Figure 4 , Figure 5 , Figure 6 and Fig.10As shown, the humidifying mechanism 5 includes a liquid storage cavity 51 opened 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 arranged in the upper port of the liquid infusion tube 52 for introducing the liquid in the liquid storage cavity 51 into the inner cavity of the liquid infusion tube 52, and a group of crushing rods 57 circumferentially fixed at the lower part of the outer surface of the liquid infusion tube 52; Among them, a bracket is fixedly installed at the lower part of the inner cavity of the feeding tube 2, and 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 upper part of the rolling block 33 is fixedly sleeved with an annular connecting shell 13 connected to the liquid storage chamber 51. The upper part of the inner cavity of the sleeve 32 is circumferentially provided with a groove adapted to the annular connecting shell 13. 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, 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 32.

[0029] During use, when the rolling block 33 moves downward and does not contact the powder, the rolling block 33 descends to drive 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 through the one-way pressure nozzle 53 for humidification. When the rolling block 33 moves downward and contacts the powder, the rolling block 33 descends to drive the infusion tube 52 to move downward. The downward movement of the infusion tube 52 drives the bottom surface of the annular spacer 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 to the powder for humidification, and when the rolling block 33 rotates, it drives the crushing rod 57 to rotate through the infusion tube 52. When the powder is moistened and squeezed and falls to the bottom of the inner cavity of the feeding tube 2, the rotating crushing rod 57 can crush the powder.

[0030] like Figure 8 As shown, the sealing mechanism 4 includes 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.

[0031] When in use, the rolling block 33 continuously descends to 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 to control the electric telescopic rod 42 to open the two baffles 41.

[0032] A method for using an EPDM rubber mixing and feeding device, comprising the following steps: 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: When the drive motor 39 is started, the reciprocating screw 11 is driven to rotate. The reciprocating screw 11 rotates to drive the housing 32 to drive the rolling block 33 to slide downward, and the reciprocating screw 11 rotates to drive 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, the rolling block 33 moves downward to drive the infusion tube 52 to move downward. Under the elastic force of the second spring telescopic rod 58, the sealing block 55 The inner cavity of the infusion tube 52 is squeezed, and the liquid in the inner cavity of the infusion tube 52 is squeezed and sprayed onto the powder through the one-way pressure nozzle 53 for humidification. When the rolling block 33 moves downward and contacts the powder, the rolling block 33 moves downward to drive the infusion tube 52 to move downward. The downward movement of the infusion tube 52 drives the bottom surface of the annular spacer 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 to the powder for humidification; S3: Under the action of the stopper 7, the rolling block 33 drives the support plate 35 to move down a distance and then flip down during the descent process, so that the wet powder falls to the bottom of the inner cavity of the feeding pipe 2. During the descent process of the rolling block 33, its bottom surface and the roller 34 squeeze the powder, which can remove excess water in the powder and 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 the set value, the pressure sensor 43 transmits a signal to control the electric telescopic rod 42 to open the two baffles 41, and the powder particles covered with the water film are sprayed and fed under the push of the compressed air; S5: Driven by the elastic force of the first spring telescopic rod 61, the scraping surface of the scraper 38 fits against the inner 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 scraper 38 to move up and down to scrape off the powder attached to the inner 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 back and forth horizontally. 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 hit the connecting frame 62. The vibration effect generated by the impact can be transmitted to the scraper 38 through the extended end of the first spring telescopic rod 61, so that the powder attached to the scraper 38 can be vibrated and cleaned.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An 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 top end of the feeding pipe (2) penetrates through the lower part of the inner cavity of the feeding box (1), a group of feeding ports (8) are equidistantly provided on the outer surface of the feeding pipe (2), docking ports (9) matching the feeding ports (8) are equidistantly provided on the upper part of the outer surface of the sleeve (31), and a soft connecting pipe (10) for connecting to the collecting shell (37) is provided on the bottom surface of the support plate (35).

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: 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), and four third spring telescopic rods (59) are symmetrically and vertically fixedly installed on the upper surface of the bracket, and 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).

5. The EPDM rubber mixing and feeding equipment according to claim 4, characterized in that: 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).

6. The EPDM rubber mixing and feeding equipment according to claim 5, 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.

7. 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.

8. The EPDM rubber mixing and feeding equipment according to claim 4, 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).

9. 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.

10. A method for using the EPDM rubber mixing and feeding equipment according to any one of claims 1 to 9, 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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