Feeding device of internal mixer

Abstract

The utility model relates to the technical field of internal mixer accessories, in particular to an internal mixer feeding device which comprises a feeding pipe, a feeding port is formed in the feeding pipe, one end of the feeding pipe is closed to form a closed end, a discharging port is formed in the other end of the feeding pipe, and a center rod capable of rotating relative to the feeding pipe is arranged in the feeding pipe. A stirring body is arranged on the central rod in the circumferential direction, the feeding pipe is obliquely arranged, the height of the closed end is larger than that of the discharging port, and the feeding port is arranged close to the closed end; the end, close to the closed end, of the center rod penetrates through the closed end to be rotationally connected with the closed end, the center rod is a hollow pipe, the end, close to the discharging port, of the center rod is closed, the other end of the center rod is rotationally connected with a bypass pipe, and the bypass pipe is connected with the feeding pipe. An air outlet hole communicated with the interior of the center rod is formed in the center rod in the axial direction; a motor used for driving the center rod to rotate is installed on the feeding pipe or the bypass pipe. Raw materials of the structure are not prone to being attached to the center rod.

Description

Technical Field

[0001] The utility model relates to the technical field of internal mixer accessories, in particular to a feeding device for an internal mixer. Background Art

[0002] Internal mixers are mainly used for plasticizing and mixing rubber. Existing internal mixers feed materials through a feed port. In order to prevent the raw materials from clogging the feeding channel during feeding, a spiral push rod or a stirring rod is generally provided in the feeding channel to increase the fluidity of the raw materials. This can effectively prevent the raw materials from clogging the feeding channel. However, in actual use, when feeding, the direct contact part of the spiral push rod or the stirring rod is squeezed by the raw materials and easily adheres to the center rod, reducing the pushing effect of the spiral push rod or the stirring effect of the stirring rod. Utility Model Content

[0003] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a feeding device for an internal mixer to at least solve one of the above technical problems.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A feeding device for an internal mixer comprises a feed pipe, wherein the feed pipe is provided with a feed port, one end of the feed pipe is closed to form a closed end, and the other end is provided with a discharge port, a center rod which can rotate relative to the feed pipe is provided in the feed pipe, a stirring body is provided circumferentially on the center rod, the feed pipe is inclined, the height of the closed end is greater than the height of the discharge port, and the feed port is provided near the closed end; one end of the center rod near the closed end passes through the closed end and is rotatably connected to the closed end, the center rod is a hollow tube, one end near the discharge port is closed, and the other end is rotatably connected with a bypass pipe, the bypass pipe is connected to the feed pipe, and an air outlet hole which is connected to the inside of the center rod is axially provided on the center rod; a motor for driving the center rod to rotate is installed on the feed pipe or the bypass pipe.

[0006] Preferably, a feed port is provided at the end of the bypass pipe not connected to the center rod, a first valve is installed on the end of the bypass pipe close to the feed port, a diversion pipe is provided on the bypass pipe below the first valve, and a second valve is provided on the diversion pipe.

[0007] Preferably, a fixing plate is provided on one end of the feed pipe close to the discharge port, a supporting plate is provided on the fixing plate, and one end of the center rod close to the discharge port is rotatably connected to the supporting plate.

[0008] Preferably, the fixing plate is provided with a through hole communicating with the discharge port, and the supporting plate is located in the through hole.

[0009] Preferably, the fixing plate and the feeding pipe are integrally arranged; the supporting plate and the fixing plate are integrally arranged.

[0010] Preferably, the fixing plate is provided with fixing holes.

[0011] Preferably, a flared opening is provided at the position where the center rod is connected to the bypass pipe, and the bypass pipe is inserted into the flared opening and is rotatably connected to the flared opening.

[0012] Preferably, the stirring body is a spiral blade; a first gear is installed on the motor; a second gear is installed on the center rod, and the first gear and the second gear are meshed.

[0013] Preferably, the stirring body is a blade; a first pulley is installed on the motor; a second pulley is installed on the center rod, and a belt is sleeved on the first pulley and the second pulley.

[0014] Preferably, the blade includes an upper blade and a lower blade, and the upper blade and the lower blade are both arranged obliquely relative to the center rod; an opening is formed between the upper blade and the center rod facing the closed end; an opening is formed between the lower blade and the center rod facing away from the closed end; and the lower blade covers the air outlet.

[0015] The utility model discloses an internal mixer feeding device, wherein the feed port is used for rubber raw material to enter, the flow divider is used for gas to enter the center rod, when gas needs to enter the center rod, the first valve is closed, and the second valve is opened, so that after the rubber raw material enters the feed pipe, the center rod exhausts gas to the outside, so that the raw material is not easy to adhere to the center rod; the feed port is used for adding reagents, which is suitable for rubber mixing at this time, when the reagents need to be added, the first valve is opened, and the second valve is closed, so that at the same time as the rubber raw material enters the feed pipe or after the reagents are added, the center rod takes in the reagents to the outside to mix with the rubber raw material, especially when the reagents are added at the same time as the raw material enters the feed pipe, the reagents and the raw material are first mixed in the feed pipe, and then mixed in the internal mixer, so that the raw material and the reagents are mixed more evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural schematic diagram of a feeding device for an internal mixer proposed by the utility model;

[0017] Figure 2 is a structural schematic diagram of a fixed plate;

[0018] Figure 3 is a schematic diagram of the installation structure of the blade;

[0019] In the figure: feed pipe 1, feed port 2, discharge port 3, center rod 4, spiral sheet 5, bypass pipe 6, air outlet 7, motor 8, feed port 9, first valve 10, diverter pipe 11, second valve 12, fixed plate 13, support plate 14;

[0020] Closed end 1-1, flared opening 4-1, upper blade 5-1, lower blade 5-2, fixing hole 13-1. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Example 1, reference Figure 1 and Figure 2 The present embodiment is a feeding device for an internal mixer, comprising a feeding pipe 1, a feeding port 2 is arranged on the feeding pipe, one end of the feeding pipe is closed to form a closed end 1-1, and a discharge port 3 is arranged at the other end, a center rod 4 which can rotate relative to the feeding pipe is arranged in the feeding pipe, and a spiral sheet 5 is arranged on the circumference of the center rod, the feeding pipe is arranged obliquely, the height of the closed end is greater than the height of the discharge port, and the feeding port is arranged near the closed end; one end of the center rod near the closed end passes through the closed end and is rotatably connected to the closed end, and the center rod It is a hollow tube, one end of which is closed near the discharge port, and the other end is rotatably connected with a bypass pipe 6, the bypass pipe is connected to the feed pipe, and the center rod is axially provided with an air outlet 7 connected to the inside of the center rod; a motor 8 for driving the center rod to rotate is installed on the bypass pipe; an inlet 9 is provided at the end of the bypass pipe not connected to the center rod, a first valve 10 is installed on the end of the bypass pipe near the inlet, a diversion pipe 11 is provided on the bypass pipe below the first valve, and a second valve 12 is provided on the diversion pipe.

[0023] When the above-mentioned internal mixer feeding device is in use, the feed port is used for the entry of rubber raw materials, and the diverter pipe is used for the entry of gas into the center rod. When gas needs to enter the center rod, the first valve is closed and the second valve is opened. In this way, after the rubber raw material enters the feed pipe, the center rod exhausts gas to the outside, making it difficult for the raw material to adhere to the center rod; the feed port is used for the entry of reagents, which is suitable for rubber mixing. When reagents need to be added, the first valve is opened and the second valve is closed. In this way, at the same time as the rubber raw material enters the feed pipe or after it is added, the center rod enters the reagent to the outside and mixes with the rubber raw material. Especially when the reagent is added at the same time as the raw material enters the feed pipe, the reagent and the raw material are first mixed in the feed pipe and then mixed in the internal mixer, so that the mixing of the raw material and the reagent is more uniform.

[0024] In actual production, only a bypass pipe can be set up, and the gas connector or reagent connector can be selectively connected through the bypass pipe. The drug delivery and gas supply functions can also be achieved. However, compared with the method of directly fixing the connector to control the valve, the operation is relatively troublesome. As a variation, the above-mentioned motor can also be installed on the feed pipe.

[0025] In one embodiment, a fixing plate 13 is provided on one end of the feed pipe near the discharge port, a support plate 14 is provided on the fixing plate, and one end of the center rod near the discharge port is rotatably connected to the support plate, so that the center rod is more stable when rotating. In actual production, a through hole connected to the discharge port can be provided on the fixing plate, and the support plate is located in the through hole. Generally, the fixing plate and the feed pipe can be integrally provided; the support plate and the fixing plate are integrally provided. In order to facilitate the fixing of the feeding device on the feeding port of the large internal mixer, a fixing hole 13-1 can also be provided on the fixing plate.

[0026] In one embodiment, a flare 4 - 1 is provided at the position where the center rod is connected to the bypass pipe, and the bypass pipe is inserted into the flare and is rotatably connected to the flare.

[0027] In the above embodiment, the connection between the motor and the center rod may be made in an existing manner, for example, a first gear is mounted on the motor; a second gear is mounted on the center rod, and the first gear and the second gear are meshed.

[0028] Embodiment 2: The structure of embodiment 2 is substantially the same as that of embodiment 1, except that a blade is mounted on the central axis. Figure 3 ; A first pulley is installed on the motor; a second pulley is installed on the center rod, and a belt is sleeved on the first pulley and the second pulley, wherein the blades include an upper blade 5-1 and a lower blade 5-2, and the upper blade and the lower blade are both inclined relative to the center rod; an opening is formed between the upper blade and the center rod facing the closed end; an opening is formed between the lower blade and the center rod facing away from the closed end; and the lower blade covers the air outlet. The upward blade of this structure stirs the raw material against the raw material, which is beneficial to the mixing of the raw material, and the downward blade stirs the raw material away from the raw material and is beneficial to the downward movement of the raw material along the blade; in addition, the raw material will not directly contact the air outlet during the falling process, and the air flow out of the air outlet is inclined downward through the guiding part of the lower blade to push the raw material to prevent the raw material from being blocked.

[0029] The above description is only a preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the present utility model can make equivalent substitutions or changes based on the technical scheme and utility model concept of the present utility model, which should be covered by the protection scope of the present utility model.

Claims

1. A feeding device for an internal mixer, comprising a feeding pipe (1), wherein the feeding pipe is provided with a feeding port (2), one end of the feeding pipe is closed, forming a closed end (1-1), and the other end is provided with a discharge port (3), wherein a central rod (4) capable of rotating relative to the feeding pipe is provided in the feeding pipe, and a stirring body is provided circumferentially on the central rod, characterized in that: The feed pipe is arranged obliquely, the height of the closed end is greater than the height of the discharge port, and the feed port is arranged close to the closed end; One end of the center rod near the closed end passes through the closed end and is rotatably connected to the closed end. The center rod is a hollow tube, one end near the discharge port is closed, and the other end is rotatably connected to a bypass pipe (6), the bypass pipe is connected to the feed pipe, and an air outlet hole (7) communicating with the interior of the center rod is axially arranged on the center rod; The feed pipe or the bypass pipe is provided with a motor (8) for driving the central rod to rotate.

2. A feeding device for an internal mixer according to claim 1, characterized in that: An inlet (9) is provided at one end of the bypass pipe that is not connected to the center rod, a first valve (10) is installed on one end of the bypass pipe close to the inlet, a shunt pipe (11) is provided on the bypass pipe below the first valve, and a second valve (12) is provided on the shunt pipe.

3. The internal mixer feeding device according to claim 1, characterized in that: A fixing plate (13) is provided on one end of the feed pipe close to the discharge port, a supporting plate (14) is provided on the fixing plate, and one end of the center rod close to the discharge port is rotatably connected to the supporting plate.

4. A feeding device for an internal mixer according to claim 3, characterized in that: The fixing plate is provided with a through hole communicating with the discharge port, and the supporting plate is located in the through hole.

5. A feeding device for an internal mixer according to claim 4, characterized in that: The fixing plate is integrally arranged with the feeding pipe; The support plate is integrally arranged with the fixing plate.

6. A feeding device for an internal mixer according to claim 5, characterized in that: The fixing plate is provided with a fixing hole (13-1).

7. The internal mixer feeding device according to claim 1, characterized in that: A flared opening (4-1) is provided at the position where the central rod is connected to the bypass pipe, and the bypass pipe is inserted into the flared opening and is rotatably connected to the flared opening.

8. A feeding device for an internal mixer according to any one of claims 1 to 7, characterized in that: The stirring body is a spiral blade (5); The motor is provided with a first gear; A second gear is mounted on the center rod, and the first gear is meshed with the second gear.

9. A feeding device for an internal mixer according to any one of claims 1 to 7, characterized in that: The stirring body is a blade; A first pulley is mounted on the motor; A second pulley is installed on the central rod, and a belt is sleeved on the first pulley and the second pulley.

10. A feeding device for an internal mixer according to any one of claim 9, characterized in that: The blades comprise an upper blade (5-1) and a lower blade (5-2), and the upper blade and the lower blade are both arranged obliquely relative to the central rod; An opening is formed between the upper blade and the center rod facing the closed end; An opening is formed between the lower blade and the center rod facing away from the closed end; The lower blade covers the air outlet.

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