Single-shaft paddle mixer

Abstract

The invention relates to a single-shaft paddle mixer, and relates to the technical field of mixer equipment.The single-shaft paddle mixer comprises a base, a mixing box is arranged above the base, a stirrer is rotationally arranged in the mixing box, a discharging port is formed in the bottom of the mixing box, an openable and closable discharging door is arranged at the discharging port and comprises a door plate, and side plates are arranged on the edge of the bottom face of the door plate in the circumferential direction; a plurality of rib plates extending in the width direction are arranged on the bottom face of the door plate at intervals, a movable plate is movably arranged on the side face of the door plate and freely moves up and down along the surface of the side plate, at least two installation bases are arranged below the side plate, springs are arranged between the bottom of the movable plate and the installation bases, and when the discharging door is closed, the movable plate moves downwards along the side plate to be staggered to form a step shape. The mixing device has the effects that the sealing performance of connection between the discharging door and the mixing box is improved, and material leakage is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of mixer equipment, and in particular to a single-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. During the mixing process, it can also increase the contact surface area of ​​the materials to promote chemical reactions and accelerate physical changes.

[0003] Commonly used mixers are divided into four categories: gas and low viscosity liquid mixers, medium and high viscosity liquid and paste mixers, and powder and granular solid material mixers.

[0004] A mixer generally includes a mixing box and an agitator. The agitator rotates inside the mixing box to mix the materials. Generally, a discharge port is provided at the bottom of the mixing box to facilitate the discharge of the mixed materials from the inside of the mixing box. For a powder mixer, the discharge port is generally provided at the bottom of the mixing box, and a closable discharge door is provided at the discharge port. The edge of the discharge door is generally provided in a stepped shape so that the discharge door is sealed when closed to prevent powder leakage. However, when the powder is discharged, the powder will enter the step gap at the edge of the discharge door. When the discharge door is closed again, the powder in the step gap will make the discharge door unable to close tightly. When the mixer is running, the powder will leak from the gap between the discharge door and the mixing box. Summary of the Invention

[0005] In order to solve the problem in the prior art that the sealing performance between the existing mixing box and the discharge door is poor, which easily causes material leakage during operation, the present application provides a single-shaft paddle mixer.

[0006] A single-shaft paddle mixer provided in the present application adopts the following technical solution: a single-shaft paddle mixer, comprising a base, a mixing box arranged above the base, an agitator arranged to rotate inside the mixing box, a discharge port opened at the bottom of the mixing box, and a discharge door that can be opened and closed is arranged at the discharge port, the discharge door comprising a door panel, a side panel is arranged circumferentially on the edge of the bottom surface of the door panel, a plurality of ribs extending in the width direction are arranged at intervals on the bottom surface of the door panel, a movable plate is movably arranged on the side of the door panel, the movable plate can move freely up and down along the surface of the side panel, at least two mounting seats are arranged below the side panel, a spring is arranged between the bottom of the movable plate and the mounting seat, and when the discharge door is closed, the movable plate moves downward along the side panel to form a step shape.

[0007] By adopting the above technical solution, when the discharge door is closed, the door panel enters the inside of the feed inlet and is connected with the inner wall of the mixing box. Since the inner wall of the mixing box has a certain thickness, when the discharge door is closed, the edge of the feed inlet of the mixing box limits the movable plate, so that the movable plate and the door panel are dislocated up and down to form a step, and the door panel enters the inside of the feed inlet. The upper end of the movable plate abuts against the surface of the mixing box under the action of the spring, thereby improving the sealing performance between the discharge door and the mixing box. When discharging, the discharge door is opened and the discharge door separates from the mixing box. The movable plate moves upward along the side plate under the action of the spring, and the upper end surface of the movable plate is flush with the upper surface of the door panel, so that the upper end surface of the movable plate and the upper surface of the door panel form a plane. During unloading, material will not accumulate on the movable plate and the door panel. When the discharge door is closed again, the movable plate moves downward along the side plate again under the action of the mixing box and is dislocated between the door panels to form a step, so that the discharge door is tightly closed.

[0008] Optionally, a frame is provided at the edge of the discharge port on the bottom surface of the mixing box, and a flexible sealing ring is provided inside the frame.

[0009] By adopting the above technical solution, when the unloading door is closed, the door panel enters the inside of the feed port, and the movable plate at the edge of the door panel squeezes the flexible sealing ring under the elastic force of the spring, so that the flexible sealing ring is squeezed and extends to one side of the door panel, thereby making the flexible sealing ring tightly connected to the door panel and the movable plate, thereby improving the sealing performance of the unloading door.

[0010] Optionally, a rotating shaft is rotatably provided inside the base, one side of the rotating shaft is connected to the rib plate via a connecting plate, and a discharge door driving mechanism for driving the rotating shaft to rotate back and forth is provided on one side of the base.

[0011] By adopting the above technical solution, the unloading door is opened and closed by driving the unloading door to move by the rotation of the rotating shaft.

[0012] Optionally, the unloading door driving mechanism includes a crank fixedly connected to one end of the rotating shaft, the end of the crank is rotatably connected to a transmission block through a transmission rod, the top of the transmission block is rotatably connected to the base through a fixed seat, a cylinder is provided on one side of the base, and the piston rod in the cylinder is rotatably connected to the transmission block.

[0013] By adopting the above technical solution, when the unloading door is opened, the piston rod in the cylinder contracts, and the piston rod drives the transmission block to rotate around the connection with the fixed seat. The transmission block drives the crank to rotate clockwise through the transmission rod, and the crank drives the rotating shaft to rotate to open the unloading door. When the unloading door is closed, the cylinder moves in the opposite direction to close the unloading door.

[0014] Optionally, the agitator includes a rotating shaft, which is rotatably arranged inside the mixing box, and at least two stirring rods are provided on the rotating shaft. The stirring rod includes a connecting rod fixedly connected to the rotating shaft, and the two ends of the connecting rod are respectively connected to a first stirring blade and a second stirring blade, and the length of the connecting rod connecting the first stirring blade is greater than the length of the connecting rod connecting the second stirring blade.

[0015] By adopting the above technical solution, during mixing, the first stirring blade on the stirring rod will flip the material at the bottom of the mixing box upward, and the second stirring blade will stir and mix the material in the middle of the mixing box, thereby improving the mixing effect of the materials.

[0016] Optionally, four stirring rods are arranged on the rotating shaft, the stirring rods at both ends of the rotating shaft are arranged at an angle of 90 degrees to the stirring rod in the middle, the stirring rods at both ends of the rotating shaft are arranged symmetrically about the center, and the stirring rod in the middle of the rotating shaft is arranged symmetrically about the center.

[0017] By adopting the above technical solution, the stirring rods at both ends are set at a 90-degree angle with the middle stirring rod, so that when the rotating shaft rotates, the stirring rods at both ends and the middle stirring rod are staggered for stirring, thereby improving the stirring effect.

[0018] Optionally, the first stirring blade and the second stirring blade are both arranged at a set angle to the axis of the connecting rod.

[0019] By adopting the above technical solution, the first stirring blade and the second stirring blade are arranged at a set angle to the axis of the connecting rod, which makes it easier for the first stirring blade and the second stirring blade to turn over the material during rotation, thereby improving the stirring effect.

[0020] Optionally, a mixing chamber observation door is provided above the mixing box, and a feed port is provided on one side of the mixing box.

[0021] By adopting the above technical solution, the mixing chamber observation door is used to observe the interior of the mixing chamber, and the feed port is used to feed different materials.

[0022] Optionally, an air duct is provided on one side of the mixing box, one end of the air duct is connected to the mixing box, and the other end of the air duct is connected to the base.

[0023] By adopting the above technical solution, during the feeding and unloading process, the movement of the material will drive the flow of air, causing the material to fly with the air. By setting up the air duct, the gas flows inside the air duct, avoiding material leakage.

[0024] Optionally, an observation port is provided on one side of the base.

[0025] In summary, this application includes at least one of the following beneficial technical effects: In the present application, a movable plate that can move up and down is provided at the edge of the discharge door. When the discharge door is closed, the movable plate and the door panel are offset up and down to form a step shape. In conjunction with the sealing ring provided at the discharge port, the movable plate squeezes the sealing ring through the elastic force of the spring, thereby improving the sealing performance of the connection between the discharge door and the mixing box and avoiding leakage of materials. At the same time, when the discharge door is opened, the movable plate is flush with the door panel under the action of the spring, thereby avoiding material from entering between the movable plate and the door panel, further improving the sealing performance of the discharge door, and the device has a simple structure and is easy to install and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of a single-shaft paddle mixer in an embodiment of the present application.

[0027] Figure 2 This is a schematic diagram of the main internal structure of a single-shaft paddle mixer in an embodiment of the present application.

[0028] Figure 3 This is a schematic diagram of the agitator structure of a single-shaft paddle mixer in an embodiment of the present application.

[0029] Figure 4 It is a left-side internal structure diagram of a single-shaft paddle mixer in an embodiment of the present application.

[0030] Figure 5 This is a schematic diagram of the bottom structure of a single-shaft paddle mixer in an embodiment of the present application.

[0031] Figure 6 This is a schematic diagram of the main structure of a discharge door of a single-shaft paddle mixer in an embodiment of the present application.

[0032] Figure 7 This is a left-side structural schematic diagram of a discharge door of a single-shaft paddle mixer in an embodiment of the present application.

[0033] Figure 8 This is a schematic diagram of the operation of a discharge door of a single-shaft paddle mixer in an embodiment of the present application.

[0034] Figure 9 This is a schematic diagram of the structure of the discharge door drive mechanism of a single-shaft paddle mixer in an embodiment of the present application.

[0035] Explanation of the accompanying drawings: 1. Base; 2. Mixing box; 3. Air duct; 4. Mixing drive mechanism; 5. Mixing chamber observation door; 6. Feed inlet; 7. Agitator; 71. Rotating shaft; 72. Stirring rod; 73. First stirring blade; 74. Second stirring blade; 75. Connecting rod; 8. Discharge port; 9. Discharge door drive mechanism; 91. Crank; 92. Transmission rod; 93. Transmission block; 94. Cylinder; 95. Fixed seat; 10. Discharge door; 101. Door panel; 102. Connecting plate; 103. Rotating shaft; 104. Movable plate; 105. Side panel; 106. Rib plate; 107. Mounting seat; 108. Spring; 11. Frame; 12. Sealing ring; 13. Observation port. DETAILED DESCRIPTION

[0036] The following describes the implementation of the present application through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present application from the contents disclosed in this specification.

[0037] See also Figure 1-9 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of this application. Therefore, they have no substantive technical significance. Any modification of the structure, change in the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of this application. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of this application without substantially changing the technical content.

[0038] The following is combined with Figure 1-9 This application is described in further detail.

[0039] This embodiment discloses a single-shaft paddle mixer.

[0040] Reference Figure 1 and Figure 2A single-shaft paddle mixer comprises a base 1 and a mixing box 2. The mixing box 2 is arranged above the base 1. A feed port 6 is provided on the upper end surface of the mixing box 2. A mixing chamber observation door 5 is provided on the side of the mixing box 2. An observation port 13 is provided on one side of the base 1. The other side of the base 1 is connected to the mixing box 2 through an air duct 3. An agitator 7 is provided for rotation inside the mixing box 2. A mixing drive mechanism 4 for driving the agitator 7 is provided on one side of the mixing box 2. The bottom of the mixing box 2 is arranged in an arc shape. A discharge port 8 is provided at the bottom of the mixing box 2. A closable discharge door 10 is provided at the discharge port 8. A discharge door drive mechanism 9 for driving the discharge door 10 to open and close is provided on one side of the base 1.

[0041] Reference Figure 3 The agitator 7 includes a rotating shaft 71, on which four groups of stirring rods 72 are evenly spaced along the axial direction. The stirring rod 72 includes a connecting rod 75 fixedly connected to the rotating shaft 71, and the two ends of the connecting rod 75 are respectively connected to a first stirring blade 73 and a second stirring blade 74. The first stirring blade 73 and the second stirring blade 74 are both arranged at a certain angle to the axis of the connecting rod 75. The length of the connecting rod 75 connecting the first stirring blade 73 is greater than the length of the connecting rod connecting the second stirring blade 74. The stirring rods 72 at both ends of the rotating shaft 71 are arranged at an angle of 90 degrees to the middle stirring rod 72. The stirring rods 72 at both ends of the rotating shaft 71 are centrally symmetrically arranged, and the stirring rod 72 in the middle of the rotating shaft 71 is also centrally symmetrically arranged.

[0042] Reference Figure 4 and Figure 5 A discharge port 8 is provided on the bottom surface of the mixing box 2, and a discharge door 10 is provided at the discharge port 8. A rotating shaft 103 is provided on one side of the inner side of the base 1 for rotation. The rotating shaft 103 is fixedly connected to the discharge door 10 through three connecting plates 102. A frame 11 is provided at the edge of the discharge port 8 on the bottom surface of the mixing box 2, and a sealing ring 12 is provided on the inner side of the frame 11.

[0043] Reference Figure 6 、 Figure 7 and Figure 8 The unloading door 10 includes a door panel 101, and a side panel 105 is arranged along the circumferential direction on the bottom edge of the door panel 101. A plurality of ribs 106 extending in the width direction are arranged at intervals on the bottom surface of the door panel 101. A movable panel 104 is movably arranged on the side of the door panel 101. The movable panel 104 can move freely up and down along the surface of the side panel 105. Two mounting seats 107 are provided under the side panel 105. A spring 108 is provided between the bottom of the movable panel 104 and the mounting seat 107. When the unloading door 10 is closed, the movable panel 104 moves downward along the side panel 105 to form a step shape.

[0044] Reference Figure 9The discharge door driving mechanism 9 includes a crank 91 fixedly connected to one end of the rotating shaft 103. The end of the crank 91 is rotatably connected to a transmission block 93 through a transmission rod 92. The top of the transmission block 93 is rotatably connected to the base 1 through a fixed seat 95. A cylinder 94 is provided on one side of the base 1. The piston rod in the cylinder 94 is rotatably connected to the transmission block 93.

[0045] The implementation principle of a single-shaft paddle mixer in this embodiment is as follows: when the mixer is running, the two materials are transported to the inside of the mixing box 2 through the feed port 6, the mixing drive mechanism 4 drives the agitator 7 to rotate inside the mixing box 2, and the first stirring blade 73 on the agitator 7 transports the material on the bottom surface of the mixing box 2 upward, and the second stirring blade 74 stirs and mixes the material in the middle, thereby improving the uniformity of the material mixing. When the material mixing is completed, the cylinder 94 is started, and the piston rod in the cylinder 94 contracts to drive the transmission block 93 to rotate counterclockwise around the connection with the fixed seat 95, and the transmission block 93 drives the crank 91 to rotate clockwise through the transmission rod 92, thereby driving the rotating shaft 103 to rotate so that the discharge door 10 is separated from the discharge port 8. When the discharge door 10 is separated from the discharge port 8, the movable plate 104 at the edge of the door panel 101 moves upward under the action of the spring 108, so that the upper end surface of the movable plate 104 is in contact with the material. The upper surface of the door panel 101 is flush. During the unloading process, when the material falls on the door panel 101, since the door panel 101 is flush with the upper end surface of the movable plate 104, the material will not accumulate at the connection between the door panel 101 and the movable plate 104. When unloading is completed, the unloading door 10 is driven to close by the unloading door driving mechanism 9. When the unloading door 10 is closed, due to the obstruction of the frame 11 and the sealing ring 12, the spring 108 between the movable plate 104 and the mounting seat 107 is compressed, and the movable plate 104 and the door panel 101 are misaligned to form a step shape. The door panel 101 enters the discharge port 8 to close the discharge port 8. The upper end of the movable plate 104 squeezes the sealing ring 12 under the elastic force of the spring 108, so that the sealing ring 12 extends to the side of the door panel 101, thereby using the sealing ring 12 to seal the connection between the unloading door 10 and the mixing box 2, thereby improving the sealing effect of the mixing box 2 and avoiding leakage of materials.

[0046] In summary, the present invention provides a movable plate that can move up and down at the edge of the discharge door. When the discharge door is closed, the movable plate and the door panel are offset up and down to form a step-like shape. In conjunction with the sealing ring provided at the discharge port, the movable plate squeezes the sealing ring through the elastic force of the spring, thereby improving the sealing performance of the connection between the discharge door and the mixing box and preventing material leakage. At the same time, when the discharge door is opened, the movable plate is flush with the door panel under the action of the spring, preventing material from entering between the movable plate and the door panel, further improving the sealing performance of the discharge door. Furthermore, the device has a simple structure and is easy to install and use. Therefore, the present invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0047] The above embodiments are merely illustrative of the principles and effects of this application and are not intended to limit this application. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of this application. Therefore, any equivalent modifications or alterations made by a person skilled in the art without departing from the spirit and technical concepts disclosed in this application shall be included within the scope of protection of this application.

Claims

1. A single-shaft paddle mixer, comprising a base (1), a mixing box (2) disposed above the base (1), a stirrer (7) rotatably disposed inside the mixing box (2), a discharge port (8) disposed at the bottom of the mixing box (2), and an openable and closable discharge door (10) disposed at the discharge port (8), characterized in that: The discharge door (10) comprises a door panel (101), the bottom edge of the door panel (101) is provided with a side panel (105) along the circumferential direction, the bottom surface of the door panel (101) is provided with a plurality of ribs (106) extending in the width direction at intervals, a movable panel (104) is movably provided on the side of the door panel (101), the movable panel (104) is freely movable up and down along the surface of the side panel (105), at least two mounting seats (107) are provided below the side panel (105), a spring (108) is provided between the bottom of the movable panel (104) and the mounting seat (107), and when the discharge door (100) is closed, the movable panel (104) moves downward along the side panel (105) to form a step shape.

2. A single-shaft paddle mixer according to claim 1, characterized in that: A frame (11) is provided at the edge of the discharge port (8) on the bottom surface of the mixing box (2), and a flexible sealing ring (12) is provided inside the frame (11).

3. A single-shaft paddle mixer according to claim 1, characterized in that: A rotating shaft (103) is rotatably arranged inside the base (1), one side of the rotating shaft (103) is connected to the rib plate (106) via a connecting plate (102), and a discharge door driving mechanism (9) for driving the rotating shaft (103) to reciprocate is arranged on one side of the base (1).

4. A single-shaft paddle mixer according to claim 3, characterized in that: The discharge door driving mechanism (9) comprises a crank (91) fixedly connected to one end of the rotating shaft (103); the end of the crank (91) is rotatably connected to a transmission block (93) via a transmission rod (92); the top of the transmission block (93) is rotatably connected to the base (1) via a fixed seat (95); a cylinder (94) is provided on one side of the base (1); a piston rod in the cylinder (94) is rotatably connected to the transmission block (93).

5. A single-shaft paddle mixer according to claim 1, characterized in that: The stirrer (7) comprises a rotating shaft (71), the rotating shaft (71) being rotatably arranged inside the mixing box (2), at least two stirring rods (72) being arranged on the rotating shaft (71), the stirring rods (72) comprising connecting rods (75) fixedly connected to the rotating shaft (71), the two ends of the connecting rod (75) being respectively connected to a first stirring blade (73) and a second stirring blade (74), the length of the connecting rod (75) connecting the first stirring blade (73) being greater than the length of the connecting rod (75) connecting the second stirring blade (74).

6. A single-shaft paddle mixer according to claim 5, characterized in that: Four stirring rods (72) are arranged on the rotating shaft (71); the stirring rods (72) at both ends of the rotating shaft (71) are arranged at an angle of 90 degrees with the stirring rod (72) in the middle; the stirring rods (72) at both ends of the rotating shaft (71) are arranged symmetrically with respect to the center; and the stirring rod (72) in the middle of the rotating shaft (71) is arranged symmetrically with respect to the center.

7. A single-shaft paddle mixer according to claim 5, characterized in that: The first stirring blade (73) and the second stirring blade (74) are both arranged at a set angle with respect to the axis of the connecting rod (75).

8. A single-shaft paddle mixer according to claim 1, characterized in that: A mixing chamber observation door (5) is provided on the top of the mixing box (2), and a feed port (6) is provided on one side of the mixing box (2).

9. A single-shaft paddle mixer according to claim 1, characterized in that: An air duct (3) is provided on one side of the mixing box (2); one end of the air duct (3) is connected to the mixing box (2), and the other end is connected to the base (1).

10. The single-shaft paddle mixer according to claim 1, characterized in that: An observation port (13) is provided on one side of the base (1).

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