Internal mixer for processing rubber sealing element

Abstract

The utility model discloses an internal mixer for processing a rubber sealing element, and relates to the technical field of internal mixers, the internal mixer for processing the rubber sealing element comprises an internal mixing chamber, the inner side of the internal mixing chamber is movably connected with an internal mixing shaft rod assembly; wherein the internal mixing shaft rod assembly is provided with a driving shaft and a driven shaft which are arranged side by side, vent holes are formed in the driving shaft and the driven shaft respectively, the vent hole in the driving shaft is opened in a one-way mode, the vent hole in the driven shaft is communicated in a left-right mode, and sealing communicating vessels which are communicated with each other are further arranged at one ends of the two vent holes. According to the internal mixer, through the vent holes formed in the driving shaft and the driven shaft, heating steam enters the inner side of the internal mixing cavity through the vent holes, so that rubber on the inner side of the internal mixing cavity is heated, and due to the fact that the internal mixing cavity is heated from inside to outside, the thickness of the internal mixing cavity can also play a role in heat preservation; therefore, the heating effect on the rubber is improved.

Description

Technical Field

[0001] This utility model specifically relates to the field of internal mixer technology, and more specifically to an internal mixer for processing rubber seals. Background Technology

[0002] An internal mixer, also known as a closed-loop rubber mixing mill, is mainly used for the plasticizing and mixing of rubber. It allows for the mixing of rubber with various compounding agents (such as vulcanizing agents, accelerators, and fillers) in a closed environment, resulting in good plasticity and uniform physicochemical properties. The internal mixer operates primarily through two opposing rotating rotors. As the rotors rotate, the material inside the mixing chamber is subjected to stirring, shearing, and compression by the rotor protrusions. Simultaneously, the top bolt applies pressure to the material, further enhancing the friction and mixing between the materials, enabling the rubber and compounding agents to be mixed quickly and uniformly.

[0003] However, in practice, it has been noted that it is necessary to maintain normal heating of the rubber during the refining process to prevent solidification. Currently, most internal mixers heat the rubber from the outside of the mixing chamber, transferring the heat to the inside. Due to the thickness of the mixing chamber, some heat loss occurs during the heat transfer process, and excess heat is discharged through the feed inlet. This not only consumes a lot of thermal energy but also results in a significant waste of residual heat. Utility Model Content

[0004] The purpose of this invention is to provide a mixing mill for processing rubber seals. It features an internal mixing mill with air vents inside the rotor, allowing steam to transfer heat to the mixing chamber. A connecting pipe is located at one end of the rotating rotor, and a recovery structure is installed at the other end, ensuring that excess heat can be recovered while heating the rubber. This addresses the technical problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A mixing mill for processing rubber seals includes a mixing chamber, a mixing shaft assembly is movably connected to the inner side of the mixing chamber, and a rotating bushing fixedly connected to the mixing chamber is sleeved at both ends of the mixing shaft assembly. A supporting end bracket is movably connected to the bottom of the rotating bushing.

[0007] The mixing shaft assembly has two drive shafts and driven shafts arranged side by side. The ends of the drive shafts and driven shafts are respectively fixedly connected to drive gears, and the two drive gears mesh with each other.

[0008] The drive shaft and driven shaft are respectively provided with vent holes. The vent hole in the drive shaft is unidirectional, while the vent hole in the driven shaft is through. The two vent holes are also provided with a sealing connector at one end.

[0009] As a further technical solution of this utility model, the sealing connector has two sealing end caps corresponding to the driving shaft and the driven shaft respectively. Each sealing end cap has an integrally provided extension connecting pipe on its side, and a connecting pipe is fixedly connected to the other side of the sealing end cap, and both ends of the connecting pipe are connected to the inner side of the extension connecting pipe.

[0010] As a further technical solution of this utility model, both of the sealing end caps are fixedly connected to the ends of the rotating bushing, and the extended connecting pipes on the side of the sealing end caps are inserted into the vent holes inside the drive shaft and the driven shaft. The end of the drive shaft away from the sealing end cap is provided with an air outlet that communicates with the vent hole.

[0011] As a further technical solution of this utility model, the end of the drive shaft near the air outlet is provided with an air source recovery device. The air source recovery device has a split fixed bottom shell and a top cover, and the fixed bottom shell and the top cover respectively cover the outside of the air outlet. Moreover, the fixed bottom shell and the top cover are respectively provided with recovery cavities communicating with the air outlet.

[0012] As a further technical solution of this utility model, the bottom of the fixed base is integrally provided with a recycling pipe communicating with the recycling cavity, and L-shaped brackets are provided on both sides of the recycling pipe, and the L-shaped brackets are fixedly connected to the bottom of the fixed base.

[0013] As a further technical solution of this utility model, the two ends of the drive shaft and the driven shaft are respectively fitted with end sealing discs, and a plurality of the end sealing discs are respectively fixedly connected to the connection between the mixing chamber and the drive shaft and the driven shaft.

[0014] As a further technical solution of this utility model, the end bracket includes a double grooved bearing seat welded on the top of the T-shaped bracket, wherein a semi-circular card seat is provided above the connection between the rotating bearing seat and the double grooved bearing seat, and the rotating bearing seat is rotatably connected to the double grooved bearing seat and the semi-circular card seat.

[0015] As a further technical solution of this utility model, a gearbox is provided at the end of the drive shaft near the drive gear, and the drive gears at the ends of the drive shaft and the driven shaft are both located inside the gearbox, and the ends of the drive shaft and the driven shaft respectively pass through the gearbox.

[0016] As a further technical solution of this utility model, the drive shaft passes through one end of the gearbox and is connected to a reduction gearbox, while the other side of the reduction gearbox is fixedly connected to a drive motor. The reduction gearbox is fixedly connected to the frame below the end bracket, and the end bracket is also fixedly connected to the frame.

[0017] As a further technical solution of this utility model, the side of the frame is fixedly connected with symmetrically arranged side supports, and the top of the side supports is fixedly connected to the feed box, the top of the mixing chamber is fixedly connected to the discharge hopper, and the top of the discharge hopper is connected to the inside of the feed box.

[0018] A tilting cylinder is also movably connected to the side of the side support, and the end of the tilting cylinder is movably connected to the side of the mixing chamber via a pin.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] 1. In this utility model, through the vent holes opened in the drive shaft and the driven shaft, heating steam enters the inner side of the mixing chamber through the vent holes, thereby heating the rubber inside the mixing chamber. Since the heating method adopts the method of heating from the inside out, the thickness of the mixing chamber can also play a role in heat preservation, thereby improving the heating effect on the rubber.

[0021] 2. In this utility model, since the drive shaft and the driven shaft are respectively provided with vent holes, the sealing connector at the end can connect the inner sides of the drive shaft and the driven shaft together, so that steam can be supplied to both shafts for heating with only one inlet, ensuring that the heat inside the steam can be fully utilized and reducing energy consumption during use;

[0022] 3. In this utility model, an air outlet is provided at the end of the drive shaft away from the sealing connector, and an air source recovery device is provided outside the air outlet to recover excess steam, thereby recovering the heat transfer medium and recovering the remaining heat in the steam, preventing excess heat from being directly dissipated, thereby reducing the energy consumption when the internal mixer is in use. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model in use.

[0024] Figure 2 This utility model Figure 1 Another perspective view.

[0025] Figure 3 This utility model Figure 1 A partial structural diagram.

[0026] Figure 4 This utility model Figure 3Another perspective view.

[0027] Figure 5 This is a three-dimensional structural diagram of the mixing shaft assembly in this utility model.

[0028] Figure 6 This is a three-dimensional structural diagram of the end bracket in this utility model.

[0029] Figure 7 This is a three-dimensional structural diagram of the sealing connector in this utility model.

[0030] Figure 8 This is a three-dimensional structural diagram of the gas source recovery device in this utility model.

[0031] Figure 9 This utility model Figure 8 A schematic diagram of the bottom structure.

[0032] Figure 10 This utility model Figure 8 A schematic diagram of the internal structure.

[0033] In the picture:

[0034] Frame-1, End support-2, T-type support-21, Double groove shaft seat-22, Semi-circular locator-23, Mixing chamber-3, Rotating bushing-4, Sealing connector-5, Sealing end cap-51, Extension connecting pipe-52, Connecting pipe-53, Mixing shaft assembly-6, Drive shaft-61, Driven shaft-62, End sealing disc-63, Vent hole-64, Drive gear-65, Air outlet-66, Gearbox-7, Reduction gearbox-8, Drive motor-9, Discharge hopper-10, Feed box-11, Pressurizing cylinder-12, Side support-13, Tilting cylinder-14, Air source recovery device-15, Fixed bottom shell-151, Top cover-152, L-type support-153, Recovery pipe-154, Recovery cavity-155, Top bolt-16. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0036] Please see Figure 1-10This utility model provides a mixing machine for processing rubber seals, including a mixing chamber 3. A mixing shaft assembly 6 is movably connected to the inner side of the mixing chamber 3. Rotating bushings 4, which are fixedly connected to the mixing chamber 3, are respectively sleeved at both ends of the mixing shaft assembly 6. A supporting end bracket 2 is movably connected to the bottom of the rotating bushing 4.

[0037] The mixing shaft assembly 6 has two driving shafts 61 and driven shafts 62 arranged side by side. The ends of the driving shafts 61 and driven shafts 62 are respectively fixedly connected to drive gears 65, and the two drive gears 65 mesh with each other.

[0038] Vent holes 64 are provided in the drive shaft 61 and the driven shaft 62 respectively. The vent hole 64 in the drive shaft 61 is open in one direction, while the vent hole 64 in the driven shaft 62 is open from left to right. A sealing connector 5 is provided at one end of each of the two vent holes 64.

[0039] In this embodiment, the sealing connector 5 has two sealing end caps 51 corresponding to the driving shaft 61 and the driven shaft 62 respectively. Each sealing end cap 51 has an integrally formed extension connecting pipe 52 on its side, and a connecting pipe 53 is fixedly connected to the other side of the sealing end cap 51. Both ends of the connecting pipe 53 are connected to the inner side of the extension connecting pipe 52.

[0040] Furthermore, both sealing end caps 51 are fixedly connected to the ends of the rotating bushing 4, and the extended connecting pipes 52 on the side of the sealing end caps 51 are inserted into the vent holes 64 inside the drive shaft 61 and the driven shaft 62. The drive shaft 61 has an exhaust hole 66 that communicates with the vent hole 64 at the end away from the sealing end caps 51.

[0041] In this embodiment, the drive shaft 61 is provided with an air source recovery device 15 at one end near the air outlet 66. The air source recovery device 15 has a split fixed bottom shell 151 and a top cover 152, and the fixed bottom shell 151 and the top cover 152 respectively cover the outside of the air outlet 66. Moreover, the fixed bottom shell 151 and the top cover 152 are respectively provided with recovery cavities 155 that communicate with the air outlet 66.

[0042] Furthermore, the fixed bottom shell 151 is integrally provided with a recycling pipe 154 communicating with the recycling cavity 155 below, and L-shaped brackets 153 are provided on both sides of the recycling pipe 154, and the L-shaped brackets 153 are respectively fixedly connected to the bottom of the fixed bottom shell 151.

[0043] More specifically, the two ends of the drive shaft 61 and the driven shaft 62 are respectively fitted with end sealing discs 63, and multiple end sealing discs 63 are respectively fixedly connected to the connection between the mixing chamber 3 and the drive shaft 61 and the driven shaft 62.

[0044] In this embodiment, the end bracket 2 includes a T-shaped bracket 21 with a double grooved bearing seat 22 welded on top, on which a rotating bushing 4 is placed. A semi-circular card seat 23 is provided above the connection between the rotating bushing 4 and the double grooved bearing seat 22, and the rotating bushing 4 is rotatably connected to the double grooved bearing seat 22 and the semi-circular card seat 23.

[0045] Furthermore, a gearbox 7 is provided at one end of the drive shaft 61 near the drive gear 65, and the drive gears 65 at the ends of the drive shaft 61 and the driven shaft 62 are both located inside the gearbox 7, and the ends of the drive shaft 61 and the driven shaft 62 respectively pass through the gearbox 7.

[0046] Furthermore, the drive shaft 61 is connected to a reduction gearbox 8 through one end of the gearbox 7, and a drive motor 9 is fixedly connected to the other side of the reduction gearbox 8. The reduction gearbox 8 is fixedly connected to the frame 1 below the end bracket 2, and the end bracket 2 is also fixedly connected to the frame 1.

[0047] Furthermore, the side of the frame 1 is fixedly connected with symmetrically arranged side supports 13, and the top of the side supports 13 is fixedly connected to the feed box 11. The top of the mixing chamber 3 is fixedly connected to the discharge hopper 10, and the top of the discharge hopper 10 is connected to the inside of the feed box 11.

[0048] The side of the side support 13 is also movably connected to the side of the tilting cylinder 14, and the end of the tilting cylinder 14 is movably connected to the side of the mixing chamber 3 via a pin.

[0049] By adopting the above technical solution, steam is introduced through the opening at the end of the driven shaft 62. The steam flows in the vent 64 inside the driven shaft 62, and the driven shaft 62 directly transfers heat to the inside of the material, thereby ensuring the heating of the rubber material. Furthermore, since the heat is from the inside to the outside, the thickness of the mixing chamber 3 can also play a role in heat preservation. Then, the steam enters the vent 64 inside the drive shaft 61 through the connecting pipe 53 at the end of the driven shaft 62, ensuring simultaneous heating of the drive shaft 61 and the driven shaft 62. Finally, excess steam enters the fixed bottom shell 151 and the top cover 152 through the vent 66 at the other end of the drive shaft 61. The recovery cavity 155 formed in the fixed bottom shell 151 and the top cover 152 collects the steam, and finally recovers it through the pipe connected to the recovery pipe 154, thereby saving energy.

[0050] In this embodiment, the upper part of the discharge hopper 10 is arc-shaped, and the lower part of the feed box 11 is provided with a groove corresponding to the upper part of the discharge hopper 10. The discharge hopper 10 and the feed box 11 fit together, and the side of the feed box 11 is also provided with a feed inlet.

[0051] More specifically, the rubber material enters the mixing chamber 3 from the top of the discharge hopper 10 through the feed inlet for processing. When discharging, the mixing chamber 3 drives the discharge hopper 10 to rotate, rotating the mixing chamber 3 above the mixing chamber 3 to the side of the mixing chamber 3, thereby causing the material inside to pour out.

[0052] Furthermore, the tilting cylinder 14 is movably connected to the side of one of the side supports 13 via a pin, and the output rod of the tilting cylinder 14 is movably connected to the side of the mixing chamber 3 via a pin, and the tilting cylinder 14 is located on the side of the mixing chamber 3 away from the semi-circular card seat 23.

[0053] More specifically, the output rod of the flipping cylinder 14 pushes the mixing chamber 3 to flip, and the rotating bushings 4 at both ends of the mixing chamber 3 flip around the connection between the double groove bearing 22 and the semi-circular card holder 23, thereby completing the automatic discharge of materials.

[0054] In this embodiment, a pressurizing cylinder 12 is fixedly connected above the feed box 11, and the end of the pressurizing cylinder 12 passes through the feed box 11 and is fixedly connected to the upper top bolt 16 inside the feed box 11, wherein the upper top bolt 16 is slidably engaged with the feed box 11.

[0055] The material enters the mixing chamber 3, and then the pressurizing cylinder 12 pushes the upper bolt 16 downward until the upper bolt 16 seals the opening on the top of the mixing chamber 3. The upper bolt 16 moves up and down while the mixing shaft assembly 6 rotates, pressurizing the material and improving the mixing effect.

[0056] In this embodiment, the fixed base shell 151 is located between the gearbox 7 and the reduction gearbox 8, and the bottom of the L-shaped bracket 153 is fixedly connected to the frame 1. The steam in the vent hole 64 on the inner side of the drive shaft 61 enters the recovery cavity 155 through the vent hole 66, and is finally sent to the steam generator for recycling through the pipe connected to the recovery pipe 154.

[0057] In this embodiment, a rotary joint (not shown in the figure) is installed at the end of the driven shaft 62. An external steam generator sends steam into the vent 64 inside the driven shaft 62 through a fixed pipe and the rotary joint. Then, the steam flows through the connecting pipe 53 to the vent 64 inside the drive shaft 61, thus saving some steam consumption.

[0058] In this embodiment, the output shaft of the drive motor 9 is fixedly connected to the input shaft of the reduction gearbox 8. The drive motor 9 drives the input shaft of the reduction gearbox 8 to rotate. After the transmission of the multi-stage gears installed inside the reduction gearbox 8, the speed is reduced and transmitted to the output shaft, thereby driving the drive shaft 61 to rotate. At the same time, the drive shaft 61 rotates, and through two meshing drive gears 65, it drives the driven shaft 62 to rotate synchronously, thus extruding the material.

[0059] The working principle of this utility model is as follows: In use, the material is first fed into the feed inlet on the side of the feed box 11. The material enters the mixing chamber 3 from above the discharge hopper 10. Then, the pressurizing cylinder 12 pushes the top bolt 16 to move to the inside of the mixing chamber 3. The drive motor 9, after being reduced in speed by the reduction gearbox 8, enters the drive shaft 61. Through the transmission and engagement of the drive gear 65 at the ends of the drive shaft 61 and the driven shaft 62, the drive shaft 61 and the driven shaft 62 rotate synchronously in opposite directions. Combined with the up-and-down movement of the top bolt 16, this compresses the material. Simultaneously, an external steam generator sends steam from the end of the driven shaft 62 into the driven shaft through a rotary joint. The steam enters the vent 64 inside the drive shaft 62, and then the driven shaft 62 transfers heat to the mixing chamber 3 to heat the material in the mixing chamber 3. Then, the steam enters the connecting pipe 53 through the extension connecting pipe 52 inserted into the end of the vent 64. Through the connecting pipe 53, the steam in the driven shaft 62 enters the vent 64 inside the drive shaft 61. The drive shaft 61 transfers heat to the mixing chamber 3. Finally, the steam enters the recovery cavity 155 through the vent 64 at the other end of the drive shaft 61. Then, through the pipe connected to the recovery pipe 154, the steam returns to the steam generator for recycling, thereby saving energy.

[0060] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0061] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An internal mixer for rubber seal processing, characterized by: The application relates to a mixer, which comprises a mixing chamber (3), the inner side of the mixing chamber (3) is movably connected with a mixing shaft assembly (6), the two ends of the mixing shaft assembly (6) are respectively sleeved with rotating shaft sleeves (4) fixedly connected with the mixing chamber (3), and the bottom of the rotating shaft sleeve (4) is movably connected with a supporting end support (2). The mixing shaft assembly (6) is provided with two driving shafts (61) and a driven shaft (62) arranged side by side, the ends of the driving shafts (61) and the driven shaft (62) are respectively fixedly connected with driving gears (65), and the two driving gears (65) are meshed with each other. Vent holes (64) are formed in the driving shafts (61) and the driven shaft (62), the vent hole (64) in the driving shaft (61) is unidirectionally opened, the vent hole (64) in the driven shaft (62) is left-right through, and the two vent holes (64) are provided with a sealing communication device (5) in communication with each other at one end.

2. Rubber seal processing internal mixer according to claim 1, characterized in that The sealing communication device (5) is provided with two sealing end covers (51) corresponding to the driving shafts (61) and the driven shaft (62), the side of each sealing end cover (51) is integrally provided with an extension communication pipe (52), the other side of the sealing end cover (51) is fixedly connected with a connecting pipeline (53), and the two ends of the connecting pipeline (53) are in communication with the inside of the extension communication pipe (52).

3. Rubber seal processing internal mixer according to claim 2, characterized in that The two sealing end covers (51) are fixedly connected at the ends of the rotating shaft sleeves (4), the extension communication pipes (52) on the sides of the sealing end covers (51) are inserted into the vent holes (64) in the inside of the driving shafts (61) and the driven shaft (62), and a gas outlet hole (66) is formed in the end of the driving shaft (61) away from the sealing end cover (51) and in communication with the vent hole (64).

4. Rubber seal processing internal mixer according to claim 3, characterized in that A gas source collector (15) is arranged at the end of the driving shaft (61) close to the gas outlet hole (66), the gas source collector (15) is provided with a fixed bottom shell (151) and a top cover (152) in a split type, the fixed bottom shell (151) and the top cover (152) cover the outside of the gas outlet hole (66), and the fixed bottom shell (151) and the top cover (152) are respectively provided with a recovery cavity (155) in communication with the gas outlet hole (66).

5. Rubber seal processing internal mixer according to claim 4, characterized in that A recovery pipeline (154) in communication with the recovery cavity (155) is integrally arranged below the fixed bottom shell (151), L-shaped supports (153) are arranged on the two sides of the recovery pipeline (154), and the L-shaped supports (153) are fixedly connected below the fixed bottom shell (151).

6. Rubber seal processing internal mixer according to claim 5, characterized in that End sealing discs (63) are sleeved at the two ends of the driving shafts (61) and the driven shaft (62), and the end sealing discs (63) are fixedly connected at the connection positions of the mixing chamber (3) and the driving shafts (61) and the driven shaft (62).

7. Rubber seal processing internal mixer according to claim 6, characterized in that The end support (2) comprises a T-shaped support (21) with a double-groove shaft seat (22) welded on the top of the T-shaped support (21) for placing a rotating shaft sleeve (4), one rotating shaft sleeve (4) is provided with a semicircular clamping seat (23) fixedly connected with the double-groove shaft seat (22) above the connection between the rotating shaft sleeve (4) and the double-groove shaft seat (22), and the rotating shaft sleeve (4) is rotatably connected with the double-groove shaft seat (22) and the semicircular clamping seat (23).

8. Rubber seal processing internal mixer according to claim 7, characterized in that The end of the driving shaft (61) close to the driving gear (65) is provided with a gear box (7), the driving gear (65) of the driving shaft (61) and the driven shaft (62) is located on the inner side of the gear box (7), and the ends of the driving shaft (61) and the driven shaft (62) respectively penetrate the gear box (7).

9. Rubber seal processing internal mixer according to claim 8, characterized in that The end of the driving shaft (61) penetrating the gear box (7) is drivingly connected with a speed reducer (8), the other side of the speed reducer (8) is fixedly connected with a driving motor (9), the speed reducer (8) is fixedly connected on the rack (1) below the end support (2), and the end support (2) is also fixedly connected with the rack (1).

10. Rubber seal processing internal mixer according to claim 9, characterized in that The side of the rack (1) is fixedly connected with symmetrically arranged side supports (13), the upper side of the side support (13) is fixedly connected with a feeding box (11), the upper side of the side support (13) is fixedly connected with a discharging hopper (10), and the upper side of the discharging hopper (10) is in communication with the inner side of the feeding box (11); The side of the side support (13) is also movably connected with a turnover air cylinder (14), and the end of the turnover air cylinder (14) is movably connected with the side of the mixing chamber (3) through a pin shaft.

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