Double-shaft paddle type mixing machine

Abstract

The utility model provides a double-shaft paddle type mixing machine and belongs to the technical field of mixing machines. Comprising a machine base frame, two communicated mixing chambers are arranged in the machine base frame, stirring paddles are rotationally arranged in the two mixing chambers respectively, blades of the two stirring paddles are arranged at the junction of the two mixing chambers in a staggered mode, and a driving assembly used for driving the two stirring paddles to rotate oppositely at the same angular speed is arranged on the machine base frame. The top of the machine base frame body is provided with a feeding port communicated with the two mixing chambers, a cover plate is arranged at the feeding port, the bottom of the machine base frame body is provided with two discharging ports communicated with the two mixing chambers respectively, discharging doors are arranged at the two discharging ports, and the machine base frame body is further provided with a driving mechanism used for driving the discharging doors to open / close the discharging ports. The effect of improving the stirring efficiency is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mixers, in particular to a double-shaft paddle mixer. Background Art

[0002] A mixer is a mechanical device that uses mechanical force and gravity to evenly mix two or more materials. Paddle mixers are mostly used to mix and process powdered, granular, blocky and viscous materials. A paddle mixer includes a stirring paddle and a frame. The stirring paddle is rotatably connected to the frame, and the materials in the frame are stirred by the rotation of the stirring paddle.

[0003] However, the traditional paddle mixer stirs the materials with only one stirring paddle, which requires the mixer to spend a long time to stir the materials evenly, resulting in the problem of low stirring efficiency. Utility Model Content

[0004] In view of the above problems, the utility model provides a double-shaft paddle mixer.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the utility model is as follows:

[0006] A double-shaft paddle mixer is provided, comprising a base frame, wherein two communicating mixing chambers are arranged in the base frame, stirring paddles are rotatably arranged in the two mixing chambers, and the paddles of the two stirring paddles are staggered at the junction of the two mixing chambers, a driving assembly for driving the two stirring paddles to rotate in opposite directions at the same angular velocity is provided on the base frame, a feeding port communicating with the two mixing chambers is provided on the top of the base frame, and a cover plate is provided at the feeding port, two discharge ports communicating with the two mixing chambers are provided at the bottom of the base frame, and discharge doors are provided at the two discharge ports, and a driving mechanism for driving the discharge door to open / close the discharge port is also provided on the base frame.

[0007] Furthermore, the driving assembly includes a chain, a transmission sprocket and two driven sprockets. The rotating shafts of the two stirring paddles pass through the mixing chamber and are coaxially fixedly connected to the two driven sprockets respectively. The chain is wound around the transmission sprocket and the two driven sprockets, and the winding path of the chain on the two driven sprockets is S-shaped. A driving motor for driving the transmission sprocket to rotate is provided on the base frame, and a tensioning wheel assembly for adjusting the chain tension is also provided on the base frame.

[0008] Furthermore, the tensioning wheel assembly includes a tensioning sprocket, a mounting frame is slidably connected to the machine base frame on the plane where the two driven sprockets are located, and the mounting frame is located above the two driven sprockets in the vertical direction, the tensioning sprocket is rotatably connected to the mounting frame, and the chain is also wrapped around the tensioning sprocket, a screw is rotatably connected to the mounting frame, a threaded hole with a size matching the screw is opened on the machine base frame, and the screw is threadedly connected to the threaded hole.

[0009] Furthermore, a sealing ring for sealing the gap between the discharge door and the inner wall of the discharge port is detachably connected to the base frame at the discharge port, and a positioning piece for connecting the sealing ring is also provided on the base frame.

[0010] Furthermore, the positioning member includes a first mounting ring and a plurality of positioning bolts. A second mounting ring is fixedly arranged on the base frame below the discharge port, and a plurality of threaded holes with sizes matching the positioning bolts are provided on the ring surface of the second mounting ring away from the discharge port. A plurality of through holes for the positioning bolts to pass through are provided on the first mounting ring. After the plurality of positioning bolts pass through the through holes one by one, they are threadedly connected in the threaded holes. A groove for inserting a sealing ring is provided on the surfaces of the first mounting ring and the second mounting ring that are close to each other, and a flexible layer is also provided between the first mounting ring and the second mounting ring.

[0011] Furthermore, the sealing ring is made of rubber material.

[0012] The beneficial effects of the utility model are:

[0013] 1. The driving assembly can drive the two stirring paddles to rotate in opposite directions at the same angular velocity to stir the materials in the two mixing chambers. After the stirring is completed, the driving mechanism can open the discharge door to discharge the materials, which has the effect of improving the stirring efficiency;

[0014] 2. The driving assembly includes a chain, a transmission sprocket and two driven sprockets. The rotating shafts of the two stirring paddles pass through the mixing chamber and are coaxially fixedly connected to the two driven sprockets respectively. The chain is wound around the transmission sprocket and the two driven sprockets, and the winding path of the chain on the two driven sprockets is S-shaped. A driving motor for driving the transmission sprocket to rotate is installed on the base frame. The stirring paddles in the two mixing chambers can achieve synchronous reverse rotation through only one driving motor. This ensures that when any driving component is damaged after long-term working, the driving assembly will stop working, avoiding the two stirring paddles from colliding with each other and further damage, thereby improving the safety of the stirring paddles during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of a double-shaft paddle mixer according to an embodiment of the present application.

[0016] Figure 2This is a schematic diagram of the half-section structure of a mixing chamber of a twin-shaft paddle mixer according to an embodiment of the present application.

[0017] Figure 3 This is a schematic diagram of the structure of a drive assembly of a double-shaft paddle mixer according to an embodiment of the present application.

[0018] Figure 4 for Figure 2 A partial enlarged schematic diagram of part A.

[0019] Among them, 1. base frame; 11. mixing chamber; 2. stirring paddle; 3. driving assembly; 31. chain; 32. transmission sprocket; 33. driven sprocket; 34. driving motor; 4. cover plate; 5. discharge door; 6. driving mechanism; 7. tensioning wheel assembly; 71. screw; 72. mounting frame; 8. sealing ring; 9. positioning piece; 91. first mounting ring; 92. positioning bolt; 93. second mounting ring; 94. flexible layer; 10. groove. DETAILED DESCRIPTION

[0020] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] The present application discloses a double-shaft paddle mixer. Figure 1 and Figure 2 , including a base frame 1, in which two communicating mixing chambers 11 are arranged, in which stirring paddles 2 are respectively arranged to rotate, and the blades of the two stirring paddles 2 are staggered at the junction of the two mixing chambers 11. A driving assembly 3 for driving the two stirring paddles 2 to rotate in opposite directions at the same angular velocity is installed on the base frame 1, and a feeding port communicating with the two mixing chambers 11 is provided at the top of the base frame 1, and a cover plate 4 is installed at the feeding port. Two discharge ports communicating with the two mixing chambers 11 are respectively provided at the bottom of the base frame 1, and discharge doors 5 are installed at the two discharge ports. A driving mechanism 6 for driving the discharge door 5 to open / close the discharge port is also installed on the base frame 1.

[0022] In the embodiment of the present application, the two stirring paddles 2 can be driven by the driving assembly 3 to rotate in opposite directions at the same angular velocity to stir the materials in the two mixing chambers 11. After the stirring is completed, the materials can be discharged by opening the discharge door 5 through the driving mechanism 6. Compared with the paddle mixer with a single stirring paddle, the double-shaft paddle mixer of the present application has the effect of improving the stirring efficiency.

[0023] Reference Figure 3The driving assembly 3 includes a chain 31, a transmission sprocket 32 ​​and two driven sprockets 33. The rotating shafts of the two stirring paddles 2 pass through the mixing chamber 11 and are coaxially connected to the two driven sprockets 33 respectively, and the driven sprockets 33 are fixed on the rotating shafts of the corresponding stirring paddles 2 by interference fit. The chain 31 is wound around the transmission sprocket 32 ​​and the two driven sprockets 33, and the winding path of the chain 31 on the two driven sprockets 33 is S-shaped. A driving motor 34 is installed on the base frame 1, and the rotating shaft of the driving motor 34 is also coaxially connected to the transmission sprocket 32 ​​by interference fit. A tensioning wheel assembly 7 for adjusting the tension of the chain 31 is also installed on the base frame 1.

[0024] In the embodiment of the present application, the stirring paddles 2 in the two mixing chambers 11 can achieve synchronous reverse rotation through only one driving motor 34. This allows the driving assembly 3 to stop working when any driving component is damaged after a long period of operation, thereby preventing the two stirring paddles 2 from colliding with each other and further damaging them, thereby improving the safety of the stirring paddles 2 during operation.

[0025] Specifically, the tensioning wheel assembly 7 includes a tensioning sprocket, and a mounting frame 72 is slidably connected to the base frame 1 on the plane where the two driven sprockets 33 are located, and the mounting frame 72 is located above the two driven sprockets 33 in the vertical direction. The tensioning sprocket is rotatably connected to the mounting frame 72, and the chain 31 is also wound around the tensioning sprocket. A screw rod 71 is rotatably connected to the mounting frame 72, and a threaded hole with a size matching the screw rod 71 is opened on the base frame 1, and the screw rod 71 is threadedly connected in the threaded hole.

[0026] In the embodiment of the present application, rotating the screw rod 71 can drive itself to slide axially along the screw rod 71, so that the tensioning sprocket on the mounting frame 72 also slides accordingly to adjust the tension of the chain 31, thereby ensuring the transmission stability between the chain 31 and each sprocket.

[0027] Reference Figure 4 A sealing ring 8 for sealing the gap between the discharge door 5 and the inner wall of the discharge port is detachably connected to the base frame 1 at the discharge port, and a positioning member 9 for connecting the sealing ring 8 is also installed on the base frame 1. The sealing ring 8 can improve the sealing effect of the discharge door 5 on the discharge port, and prevent the material from leaking out of the mixing chamber 11 along the gap between the discharge door 5 and the discharge port during the mixing process. Specifically, the sealing ring 8 is made of rubber material.

[0028] The positioning member 9 includes a first mounting ring 91 and a plurality of positioning bolts 92. A second mounting ring 93 is welded on the base frame 1 below the discharge port, and a plurality of threaded holes of sizes matching the positioning bolts 92 are provided on the ring surface of the second mounting ring 93 away from the discharge port. The first mounting ring 91 is provided with a plurality of through holes for the positioning bolts 92 to pass through, and the plurality of positioning bolts 92 are threadedly connected in the threaded holes after passing through the through holes one by one. A groove 10 for the sealing ring 8 to be inserted is provided on the side of the first mounting ring 91 and the second mounting ring 93 that are close to each other. A flexible layer 94 is also filled between the first mounting ring 91 and the second mounting ring 93.

[0029] In the embodiment of the present application, the sealing ring 8 is composed of an outer ring portion and an inner ring portion which are fixed integrally. The outer ring portion of the sealing ring 8 is embedded in the groove 10, and the inner ring portion protrudes the first mounting ring 91 and the second mounting ring 93. Subsequently, a plurality of positioning bolts 92 are passed through the through holes one by one and threadedly connected in the threaded holes. The flexible layer 94 can be made of a flexible material such as rubber. By tightening the positioning bolts 92, the inner bottom wall of the groove 10 on the first mounting ring 91 and the second mounting ring 93 can be abutted against the outer ring portion of the sealing ring 8. When the driving mechanism 6 drives the discharge door 5 to enter the discharge port, the inner ring portion of the sealing ring 8 abuts against the side wall of the discharge door 5, thereby sealing the gap between the discharge door 5 and the discharge port.

[0030] The implementation principle of a double-shaft paddle mixer in the embodiment of the present application is as follows: during the use of a double-shaft paddle mixer, the two stirring paddles 2 can be driven by the driving assembly 3 to rotate in opposite directions at the same angular velocity to stir the materials in the two mixing chambers 11. After the stirring is completed, the materials can be discharged by opening the discharge door 5 through the driving mechanism 6. Compared with the traditional single-paddle paddle mixer, the double-shaft paddle mixer of the present application has the effect of improving the stirring efficiency.

[0031] It should be understood by those skilled in the art that, although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic creative concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A twin-shaft paddle mixer, characterized in that: The invention comprises a machine base frame (1), wherein two communicating mixing chambers (11) are arranged in the machine base frame (1), stirring paddles (2) are respectively arranged in rotation in the two mixing chambers (11), and the paddles of the two stirring paddles (2) are arranged alternately at the junction of the two mixing chambers (11), and the machine base frame (1) is provided with a driving component (3) for driving the two stirring paddles (2) to rotate in opposite directions at the same angular velocity, and a feeding port communicating with the two mixing chambers (11) is arranged at the top of the machine base frame (1), and a cover plate (4) is arranged at the feeding port, and two discharge ports communicating with the two mixing chambers (11) are respectively arranged at the bottom of the machine base frame (1), and discharge doors (5) are arranged at the two discharge ports, and a driving mechanism (6) for driving the discharge door (5) to open / close the discharge port is also arranged on the machine base frame (1).

2. A twin-shaft paddle mixer according to claim 1, characterized in that: The driving assembly (3) comprises a chain (31), a transmission sprocket (32) and two driven sprockets (33); the rotating shafts of the two stirring paddles (2) pass through the mixing chamber (11) and are respectively coaxially fixedly connected to the two driven sprockets (33); the chain (31) is wound around the transmission sprocket (32) and the two driven sprockets (33); and the winding path of the chain (31) on the two driven sprockets (33) is S-shaped; a driving motor (34) for driving the transmission sprocket (32) to rotate is provided on the machine base frame (1); and a tensioning wheel assembly (7) for adjusting the tension of the chain (31) is also provided on the machine base frame (1).

3. A twin-shaft paddle mixer according to claim 2, characterized in that: The tensioning wheel assembly (7) comprises a tensioning sprocket, a mounting frame (72) is slidably connected to the base frame (1) on a plane where two driven sprockets (33) are located, and the mounting frame (72) is located above the two driven sprockets (33) in the vertical direction, the tensioning sprocket is rotatably connected to the mounting frame (72), and the chain (31) is also wound around the tensioning sprocket, a screw rod (71) is rotatably connected to the mounting frame (72), a threaded hole with a size matching the screw rod (71) is opened on the base frame (1), and the screw rod (71) is threadedly connected to the threaded hole.

4. A twin-shaft paddle mixer according to claim 1, characterized in that: A sealing ring (8) for sealing the gap between the discharge door (5) and the inner wall of the discharge port is detachably connected to the base frame (1) at the discharge port, and a positioning piece (9) for connecting the sealing ring (8) is also provided on the base frame (1).

5. A twin-shaft paddle mixer according to claim 4, characterized in that: The positioning member (9) comprises a first mounting ring (91) and a plurality of positioning bolts (92); a second mounting ring (93) is fixedly arranged on the base frame (1) below the discharge port, and a plurality of threaded holes with sizes matching the positioning bolts (92) are provided on the annular surface of the second mounting ring (93) away from the discharge port; a plurality of through holes for the positioning bolts (92) to pass through are provided on the first mounting ring (91); the plurality of positioning bolts (92) are threadedly connected in the threaded holes after passing through the through holes in a one-to-one correspondence; a groove (10) for the sealing ring (8) to be inserted is provided on the surfaces of the first mounting ring (91) and the second mounting ring (93) close to each other; and a flexible layer (94) is also provided between the first mounting ring (91) and the second mounting ring (93).

6. A twin-shaft paddle mixer according to claim 4, characterized in that: The sealing ring (8) is made of rubber material.

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