Stirring device for flame-retardant ethylene-propylene-diene monomer halogen-free elastic rubber body material

Abstract

A stirring device for a flame-retardant ethylene-propylene-diene monomer halogen-free elastic rubber body material comprises a stirring bin, equipment bins, a stirring rotor, a stirring motor, a cleaning assembly and a screw conveyor, the lower end of the stirring bin is communicated with the top of the screw conveyor, and the equipment bins are arranged at the two ends of the stirring bin; two stirring rotors are arranged in the stirring bin, and main shafts at the two ends of the stirring rotors extend into the two equipment bins; the inner walls of the left side and the right side of the stirring bin are arranged in an arc surface mode, a cleaning assembly is arranged in the stirring bin and comprises two scraping plates, rotating sleeves and a driving motor, the two scraping plates are symmetrically arranged on the inner walls of the two sides of the stirring bin, connecting plates are perpendicularly arranged at one ends of the scraping plates, the rotating sleeves are arranged at one ends of the connecting plates, and the rotating sleeves are arranged on the main shaft at one end in a sleeving mode. The inner walls of the rotating sleeves are rotationally connected with the stirring rotor through bearings, one ends of the rotating sleeves extend into the equipment bin, first gears meshed with each other are arranged on the two rotating sleeves respectively, and one rotating sleeve is driven by a driving motor arranged at one end of the equipment bin to rotate; and the rotating sleeve drives the scraping plate to move along the inner wall of the stirring bin through the connecting plate and scrapes the rubber residues, so that the automatic cleaning function is realized, the manual cleaning frequency is reduced, and the burden of personnel is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber processing equipment, in particular to a stirring device for flame-retardant EPDM halogen-free elastic rubber material. Background Art

[0002] The rubber production process involves mechanically mixing plasticized rubber, or a rubber with a certain degree of plasticity, with compounding agents to create a rubber compound, allowing rubber products with various properties to be manufactured. Rubber mixing is typically performed using an internal mixer. During operation, the two rotors rotate relative to each other, clamping the material from the feed port and drawing it into the gap between the rollers. This action squeezes and shears the material, stirring and mixing it, and evenly incorporating the compounding agents into the rubber compound. Due to the self-adhesive nature of EPDM, existing rubber mixing devices can cause some of the rubber raw material to adhere to the inner walls of the internal mixer during production, requiring staff to periodically disassemble the machine for manual cleaning. This complex operation increases the workload of staff. Utility Model Content

[0003] In view of the above problems, the utility model discloses a stirring device for flame-retardant EPDM halogen-free elastic rubber material, which adopts a scraper to scrape and clean the residual material on the inner wall of the stirring chamber, solving the problem of high labor intensity in manual disassembly and cleaning of the equipment.

[0004] The specific technical solutions are as follows:

[0005] A stirring device for flame-retardant EPDM halogen-free elastic rubber material, comprising a stirring chamber, an equipment chamber, a stirring rotor, a stirring motor, a cleaning component, and a screw conveyor, wherein the lower end of the stirring chamber is opened and communicated with the top of the screw conveyor, a feeding port is provided on one side of the upper end of the stirring chamber, an equipment chamber is provided at each end of the stirring chamber, the stirring chamber and the equipment chamber are separated by a partition, and through openings are respectively provided on the two partitions; two stirring rotors distributed on the left and right and cooperating with each other are provided in the stirring chamber, the main shafts at both ends of the stirring rotor respectively pass through the through openings and extend into the two equipment chambers, and the main shafts are driven to rotate by a stirring motor provided at one end of the equipment chamber; the inner walls on the left and right sides of the stirring chamber are both arranged in an arc surface, and a cleaning component is provided in the stirring chamber, the cleaning component comprises a scraper, a rotating sleeve and a driving motor The machine comprises two scrapers, which are symmetrically arranged on the inner walls on both sides of the mixing bin, the scrapers are fitted with the inner wall of the mixing bin, and a connecting plate is vertically provided at one end of the scrapers. The two connecting plates are respectively located at one end of the two mixing rotors, and a rotating sleeve is provided at one end of the connecting plate. The rotating sleeves are respectively sleeved on the main shafts at one end of the two mixing rotors, and the inner wall of the rotating sleeve is connected to the rotation of the mixing rotor through a bearing, and one end of the rotating sleeve passes through one end of the mixing bin and extends into the equipment bin. The outer side of the rotating sleeve is rotatably connected to the inner wall of the through port through a bearing. Gears 1 are respectively provided on the two rotating sleeves, and the two gears 1 are meshed with each other. One of the rotating sleeves is driven to rotate by a driving motor arranged at one end of the equipment bin, so that the rotating sleeve drives the scraper to move along the inner wall of the mixing bin through the connecting plate and scrapes off the rubber residue.

[0006] Furthermore, the end faces of one end of the two scrapers are both inclined, and the other ends of the two scrapers are both upwardly protruding and provided with abutment parts. When the two scrapers move to the lower end of the mixing chamber, the abutment parts of the two scrapers abut against each other and close the opening of the lower end of the mixing chamber.

[0007] Furthermore, cleaning plates are symmetrically installed on the upper ends of both sides of the mixing chamber. The cleaning plates are curved in an arc shape, and a protrusion is provided on the upper end of one side of the cleaning plate. The protrusion is in contact with the inner wall of the cleaning chamber and is fixed by fasteners. A gap is left between the cleaning plate and the inner wall of the mixing chamber to form an embedded accommodating cavity for accommodating the scraper, so that the lower end of the cleaning plate can scrape off the residual material adhering to the inner surface of the scraper.

[0008] Furthermore, one end of one of the rotating sleeves is closed and horizontally connected to a connecting shaft through a flange, and the connecting shaft is connected to the output end of the driving motor to enable the driving motor to drive the rotating sleeve to rotate.

[0009] Furthermore, a gear 2 is provided on the main shaft of the stirring rotor away from one end of the rotating sleeve, and the two gears 2 are meshed with each other to achieve relative rotation between the two stirring rotors.

[0010] Furthermore, the length of the scraper is adapted to the length of the mixing chamber.

[0011] The beneficial effects of the present invention are as follows:

[0012] The utility model provides scrapers on the inner walls of both sides of the mixing bin, which fit together and seal the bottom of the mixing bin to prevent materials from falling into the screw conveyor during mixing. The scrapers are connected to the rotating sleeve through a connecting plate, and the rotating sleeve is arranged on the main shaft of the rotor. When cleaning, the rotating sleeve is driven by the driving motor to rotate, so that the two scrapers move from bottom to top along the inner wall of the mixing bin and scrape off the residual materials adhered to the inner wall of the mixing bin. The cleaning plate is provided on the inner wall of the upper end of the mixing bin to cooperate with the scraper to remove the residual materials adhered to the scraper, thereby realizing the automatic cleaning function, effectively reducing the frequency of manual cleaning and alleviating the burden on personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the present utility model.

[0014] Figure 2 This is a schematic diagram of the structure of the mixing bin after the scraper is scraped off in the utility model.

[0015] Figure 3 It is a transverse cross-sectional view of the mixing bin and equipment bin of the utility model.

[0016] Explanation of the accompanying drawings: mixing chamber 1, feed port 101, equipment chamber 2, partition 21, through port 22, mixing rotor 3, main shaft 31, gear 2 32, mixing motor 4, screw conveyor 5, scraper 6, connecting plate 61, abutment part 62, rotating sleeve 7, gear 1 71, connecting shaft 72, drive motor 8, cleaning plate 9, protrusion part 91, accommodating chamber 92, pressurizing device 10. DETAILED DESCRIPTION

[0017] To make the technical solution of the present invention clearer and more specific, the present invention is further described below with reference to the accompanying drawings. Any equivalent replacement of the technical features of the present invention and any solution derived from conventional reasoning shall fall within the scope of protection of the present invention. The fixed connections and fixed arrangements mentioned in the present invention are all common connection methods in the mechanical field, including welding, bolt and nut connections, and screw connections.

[0018] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] Please see the attached Figure 1-3 The present embodiment provides a stirring device for flame-retardant EPDM halogen-free elastic rubber material, including a stirring chamber 1, an equipment chamber 2, a stirring rotor 3, a stirring motor 4, a cleaning component, and a screw conveyor 5. The lower end of the stirring chamber 1 is opened and connected to the top of one end of the screw conveyor 5, so that the material can fall into the screw conveyor 5 for transportation after stirring is completed. A pressurizing device 10 is provided at the upper end of the mixing bin 1, and a feed port 101 is provided on one side of the upper end of the mixing bin 1. An equipment bin 2 is respectively provided at the front and rear ends of the mixing bin 1. The mixing bin 1 and the equipment bin 2 are separated by a partition 21, and through openings 22 are respectively opened at both ends of the two partitions 21; two mixing rotors 3 distributed on the left and right and cooperating with each other are provided in the mixing bin 1, and the main shafts 31 at both ends of the mixing rotor 3 respectively pass through the through openings 22 and extend into the two equipment bins 2, and a gear 2 32 is provided on the main shaft 31 at one end of the mixing rotor 3, and the two gears 2 32 are meshed with each other. One of the main shafts 31 at the other end of the mixing rotor 3 is driven to rotate by a stirring motor 4 arranged at one end of the equipment bin 2, so as to realize relative rotation between the two mixing rotors 3.

[0020] The inner walls on both sides of the mixing chamber 1 are curved, and a cleaning assembly is provided in the mixing chamber 1. The cleaning assembly includes a scraper 6, a rotating sleeve 7 and a drive motor 8. There are two scrapers 6 and they are symmetrically arranged on the inner walls on both sides of the mixing chamber 1. The scrapers 6 are fitted to the inner walls of the mixing chamber 1, and the length of the scrapers 6 is adapted to the length of the mixing chamber 1. One end of the scraper 6 is vertically provided with a connecting plate 61, and the two connecting plates 61 are respectively located at one end of the two mixing rotors 3. A rotating sleeve 7 is provided at one end of the connecting plate 61. The rotating sleeve 7 is respectively sleeved on the main shaft 31 at one end of the two mixing rotors 3, and the inner wall of the rotating sleeve 7 is connected to the rotation of the mixing rotor 3 through a bearing, and one end of the rotating sleeve 7 passes through one end of the mixing bin 1 and extends into the equipment bin 2. The outer side of the rotating sleeve 7 is rotatably connected to the inner wall of the through-port 22 through a bearing. Gears 71 are respectively provided on the two rotating sleeves 7, and the two gears 71 are meshed with each other. One of the rotating sleeves 7 is driven to rotate by a driving motor 8 arranged at one end of the equipment bin 2, so that the rotating sleeve 7 drives the scraper 6 to move along the inner wall of the mixing bin 1 through the connecting plate 61 and scrapes off the rubber residue.

[0021] In this embodiment, the end faces of one end of the two scrapers 6 are both inclined, and the other ends of the two scrapers 6 are both upwardly protruding and provided with abutment portions 62. When the two scrapers 6 move to the lower end of the mixing chamber 1, the abutment portions 62 of the two scrapers 6 abut against each other and close the opening at the lower end of the mixing chamber 1 to ensure that the mixing rotor 3 stirs the rubber raw materials.

[0022] In this embodiment, cleaning plates are symmetrically installed on the upper ends of both sides of the mixing chamber 1. The cleaning plates 9 are curved in an arc shape. A protrusion is provided on the upper end of one side of the cleaning plate 9. The protrusion is in contact with the inner wall of the cleaning chamber and is fixed by fasteners. A gap is left between the cleaning plate 9 and the inner wall of the mixing chamber 1 to form an embedded accommodating cavity 92 for accommodating the scraper 6, and the lower end of the cleaning plate 9 scrapes off the residual material adhering to the inner surface of the scraper 6.

[0023] In this embodiment, one end of one of the rotating sleeves 7 is closed and horizontally connected to a connecting shaft 72 through a flange. The connecting shaft 72 is connected to the output end of the driving motor 8 to enable the driving motor 8 to drive the rotating sleeve 7 to rotate.

[0024] The working principle of the present invention is as follows: during stirring, the material enters the stirring bin 1 through the feed port 101. At this time, the two scrapers 6 are located at the lower end of the stirring bin 1. The two scrapers 6 are attached to each other through the abutment portion 62 to achieve the closure of the bottom end of the stirring bin 1, preventing the material from falling into the screw conveyor 5 during stirring.

[0025] During discharge, the drive motor 8 drives the rotating sleeve 7 to rotate, and the two rotating sleeves 7 rotate simultaneously under the cooperation of gear 1 71, causing the two scrapers 6 to move from bottom to top along the inner wall of the mixing chamber 1, causing the material to fall into the screw conveyor 5. At this time, the scrapers 6 scrape off the residual material adhering to the inner wall of the mixing chamber 1. When the scrapers 6 move to the position of the cleaning plate 9, the lower end of the cleaning plate 9 cooperates with the inner surface of the scrapers 6, so that the scrapers 6 gradually move upward. The cleaning plate 9 scrapes off the residual material adhering to the scrapers 6, causing the residual material to fall onto the mixing rotor 3. As the mixing rotor 3 rotates, the material falls into the screw conveyor 5 through the opening at the lower end of the mixing chamber 1.

[0026] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A stirring device for flame retardant EPDM halogen-free elastic rubber material, characterized in that: It includes a mixing chamber, an equipment chamber, a mixing rotor, a mixing motor, a cleaning component, and a screw conveyor. The lower end of the mixing chamber is opened and connected to the top of the screw conveyor. A feed port is provided on one side of the upper end of the mixing chamber. An equipment chamber is provided at each end of the mixing chamber. The mixing chamber and the equipment chamber are separated by a partition, and through openings are provided on the two partitions. Two mixing rotors distributed on the left and right and cooperating with each other are provided in the mixing chamber. The main shafts at both ends of the mixing rotor pass through the through openings and extend into the two equipment chambers, and the main shafts are driven to rotate by a mixing motor provided at one end of the equipment chamber. The inner walls on the left and right sides of the mixing chamber are both curved, and a cleaning component is provided in the mixing chamber. The cleaning component includes a scraper, a rotating sleeve and a drive motor. There are two scrapers. Symmetrically arranged on the inner walls of both sides of the mixing bin, the scrapers are fitted against the inner walls of the mixing bin, and a connecting plate is vertically provided at one end of the scrapers. The two connecting plates are respectively located at one end of the two mixing rotors, and a rotating sleeve is provided at one end of the connecting plate. The rotating sleeves are respectively sleeved on the main shafts at one end of the two mixing rotors. The inner wall of the rotating sleeve is connected to the rotation of the mixing rotor through a bearing, and one end of the rotating sleeve passes through one end of the mixing bin and extends into the equipment bin. The outer side of the rotating sleeve is rotatably connected to the inner wall of the through port through a bearing. Gears 1 are respectively provided on the two rotating sleeves, and the two gears 1 are meshed with each other. One of the rotating sleeves is driven to rotate by a driving motor arranged at one end of the equipment bin, so that the rotating sleeve drives the scraper to move along the inner wall of the mixing bin through the connecting plate and scrapes off the rubber residue.

2. A stirring device for flame-retardant EPDM halogen-free elastic rubber material according to claim 1, characterized in that: The end faces of one end of the two scrapers are both inclined, and the other ends of the two scrapers are both upwardly protruding and provided with abutment parts. When the two scrapers move to the lower end of the mixing bin, the abutment parts of the two scrapers abut against each other and close the opening of the lower end of the mixing bin.

3. The stirring device for flame-retardant EPDM halogen-free elastic rubber material according to claim 1, characterized in that: Cleaning plates are symmetrically installed on the upper ends of both sides of the mixing chamber. The cleaning plates are curved in an arc shape. A protrusion is provided on the upper end of one side of the cleaning plate. The protrusion is in contact with the inner wall of the cleaning chamber and is fixed by fasteners. A gap is left between the cleaning plate and the inner wall of the mixing chamber to form an embedded accommodating cavity for accommodating the scraper, so that the lower end of the cleaning plate can scrape off the residual material adhering to the inner surface of the scraper.

4. The stirring device for flame-retardant EPDM halogen-free elastic rubber material according to claim 1, characterized in that: One end of one of the rotating sleeves is closed and horizontally connected to a connecting shaft through a flange. The connecting shaft is connected to the output end of the driving motor, so that the driving motor drives the rotating sleeve to rotate.

5. The stirring device for flame-retardant EPDM halogen-free elastic rubber material according to claim 1, characterized in that: The main shaft of the stirring rotor away from the rotating sleeve is provided with a second gear, and the two second gears are meshed with each other to achieve relative rotation between the two stirring rotors.

6. A stirring device for flame-retardant EPDM halogen-free elastic rubber material according to claim 2, characterized in that: The length of the scraper is adapted to the length of the mixing bin.

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