Automatic cleaning mixer

Abstract

The invention discloses an automatic cleaning mixer, comprising a main housing (1), a stirring shaft (2), an air guide ring (3), an air pipe (5), and a fixed pipe (4); the stirring shaft (2) passes through the main housing (1), and two sealing sleeves are installed on the stirring shaft (2) outside the main housing (1); an air guide ring (3) is installed at one end of the stirring shaft (2), and a reducer (12) is installed at the other end, and the reducer (12) is connected to a motor (13); a spiral ribbon (6) is connected to the stirring shaft (2) inside the main housing (1), and an air pipe (5) is installed on the surface of the spiral ribbon (6); the air pipe (5) is processed with a plurality of air holes; a fixed pipe (4) is installed on the upper part of the main housing (1), and the fixed pipe (4) is processed with a plurality of air outlets; the main housing (1) is processed with a feeding port (7), an air exhaust port (8), and a discharging port (9); the air exhaust port (8) is connected to an exhaust fan. The invention does not require manual cleaning and can automatically realize automatic cleaning of the mixer.

Description

Technical Field

[0001] The invention belongs to the technical field of mixers and cleaning devices thereof, and in particular relates to an automatic cleaning mixer. Background Art

[0002] Mixer equipment needs to be cleaned inside to prevent cross contamination of materials after being used for a period of time or processing a batch of materials, or before being used to mix different types of materials.

[0003] In the prior art, the mixer only has the basic mixing function, but does not have the automatic cleaning function, and usually adopts manual cleaning. For example, for a large mixer, it is necessary to manually hold a cleaning tool and go deep into the mixer equipment to clean the inside of the mixer one by one; for a small mixer, the location far from the cleaning port of the cylinder reaction equipment is usually not accessible or cannot be cleaned thoroughly by manual labor; and the manual cleaning method is dangerous because the human body goes deep into the equipment, which is not suitable for the automation trend, and the labor intensity is high. The dust generated by cleaning affects occupational health, so there is an urgent need for a mixer with automatic cleaning function. Summary of the invention

[0004] In view of the problem that the mixer in the prior art does not have an automatic cleaning function, the present invention provides an automatic cleaning mixer. The present invention does not require manual cleaning and can automatically realize automatic cleaning of the mixer.

[0005] The present invention adopts the following technical solutions:

[0006] An automatic cleaning mixer, characterized in that the mixer comprises a main shell (1), a stirring shaft (2), an air guide ring (3), an air pipe (5), and a fixed pipe (4); the stirring shaft (2) passes through the main shell (1), and two sealing sleeves are installed on the stirring shaft (2) outside the main shell (1), and the two sealing sleeves are respectively located on both sides of the main shell (1); the air guide ring (3) is installed at one end of the stirring shaft (2), and the other end of the stirring shaft (2) is installed with a reducer (12), and the reducer (12) is connected to a motor (13); the stirring shaft (2) inside the main shell (1) is provided with a plurality of air guide rings (3). A spiral belt (6) is connected, and an air pipe (5) is installed on the surface of the spiral belt (6); the air pipe (5) is processed with a plurality of air holes, each of which is connected to a gas one-way valve, and the outlet end of the gas one-way valve connected to the air hole faces the inner wall of the main shell (1); a fixed pipe (4) is installed on the upper part of the main shell (1), and the fixed pipe (4) is processed with a plurality of air outlets, each of which is connected to a gas one-way valve, and the outlet end of the gas one-way valve connected to the air outlet faces the stirring shaft (2); the main shell (1) is processed with a feeding port (7), an exhaust port (8), and a discharging port (9); the exhaust port (8) is connected to an exhaust fan.

[0007] According to the above-mentioned automatic cleaning mixer, it is characterized in that the air guide ring (3) includes a rotor end and a stator end; the air pipe (5) is connected or disconnected with the air guide ring (3). When the air pipe (5) and the air guide ring (3) are in a connected state, one end of the air pipe (5) is connected to the rotor end of the air guide ring (3), and the stator end of the air guide ring (3) is connected to an external air connection pipe (10), and the external air connection pipe (10) and the air pipe (5) are communicated through the air guide ring (3); when the air pipe (5) and the air guide ring (3) are in a disconnected state, one end of the air pipe (5) is disconnected from the rotor end of the air guide ring (3), and the stator end of the air guide ring (3) is connected to the external air connection pipe (10), and the external air connection pipe (10) and the air pipe (5) are disconnected.

[0008] According to the above-mentioned automatic cleaning mixer, it is characterized in that the number of the air pipes (5) is 4-12, the number of the external air pipes (10) is 4-12, and each external air pipe (10) is connected to one air pipe (5).

[0009] According to the above-mentioned automatic cleaning mixer, it is characterized in that a main support is installed at the bottom of the reducer, and a main support is installed at the bottom of the air guide ring (3), and the two main supports are fixedly connected to the two sides of the main shell (1) respectively.

[0010] According to the above-mentioned automatic cleaning mixer, it is characterized in that two sealing sleeves are respectively fitted with two sides of the main shell (1); the stirring shaft (2) is equipped with two bearing seats, one bearing seat is located between the reducer and a sealing sleeve, and the other bearing seat is located at one end of the stirring shaft (2) where the air guide ring (3) is installed.

[0011] According to the above-mentioned automatic cleaning mixer, it is characterized in that the exhaust fan connected to the exhaust port (8) is connected to a PLC control cabinet.

[0012] According to the above-mentioned automatic cleaning mixer, it is characterized in that the feeding port (7) is equipped with a feeding valve, and the feeding valve is connected to the PLC control cabinet; the discharging port (9) is equipped with a discharging valve, and the discharging valve is connected to the PLC control cabinet.

[0013] According to the above-mentioned automatic cleaning mixer, it is characterized in that the stirring shaft (2) inside the main shell (1) is installed with multiple spiral support rods (11), and both ends of each spiral support rod are connected to the spiral ribbon (6).

[0014] The beneficial technical effects of the present invention are as follows: (1) The present invention can be applied to the field of mechanical mixing and equipment cleaning of powder materials such as lithium-ion battery positive / negative electrode material precursors and lithium-ion battery positive / negative electrode materials; the present invention solves the problem that the mixer itself does not have an automatic cleaning function. (2) For large mixers, the present invention solves the problem that the cleaning of large mixers can only rely on manual entry and cleaning; for small mixers, it solves the problem that the location far from the cleaning port of the cylinder reaction equipment is usually inaccessible or cannot be cleaned thoroughly by manual labor. (3) The cleaning method of the present invention is safe, suitable for automation, low labor intensity, high cleaning efficiency, and the cleaning process is closed, does not generate dust, and does not affect the occupational health of workers. (4) The motor of the present invention can be used for two purposes: the mixing and stirring function can be realized at a high speed of 60-200r / min, and the cleaning function can be realized at a low speed of 1-60r / min. (5) The application of the air guide ring of the present invention allows gas to be purged during stirring and rotating. (6) The gas one-way valve connected to the air hole of the air pipe of the present invention allows the gas to be blown into the mixer from the air pipe, and the air or dust inside the mixer cannot be sucked back into the air pipe, which will cause the air pipe to be blocked; the gas one-way valve can simultaneously ensure that the gas and dust will not be sucked back into the air pipe, ensuring the patency of the air pipe, making its blowing performance more efficient and stable. (7) All the components of the present invention can be controlled by PLC, and the programmable automatic control operation can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is a partial schematic diagram of the present invention;

[0017] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0018] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0019] Figure 5 It is a schematic diagram of the air pipe and the air guide ring in the present invention when they are in a disconnected state;

[0020] Figure 6 It is a schematic diagram of the air pipe and the air guide ring in the present invention when they are in a connected state. DETAILED DESCRIPTION

[0021] See also Figure 1-6An automatic cleaning mixer of the present invention comprises a main shell 1, a stirring shaft 2, an air guide ring 3, an air pipe 5, and a fixed tube 4; the stirring shaft 2 passes through the main shell 1, and two sealing sleeves 14 are installed on the stirring shaft 2 outside the main shell 1, and the two sealing sleeves are respectively located on both sides of the main shell 1, and the two sealing sleeves are respectively tightly fitted with both sides of the main shell 1; an air guide ring 3 is installed at one end of the stirring shaft 2, and a reducer 12 is installed at the other end of the stirring shaft 2, and the reducer is connected to a motor 13. The stirring shaft 2 is installed with two bearing seats 15, one bearing seat is located between the reducer and a sealing sleeve, and the other bearing seat is located at one end of the stirring shaft 2 where the air guide ring 3 is installed. The stirring shaft 2 inside the main shell 1 is installed with a plurality of spiral ribbon support rods 11, preferably, the plurality of spiral ribbon support rods are installed at equal intervals, and the plurality of spiral ribbon support rods are all perpendicular to the stirring shaft. The spiral ribbon support rods are used to support the spiral ribbon 6, and the two ends of each spiral ribbon support rod are connected to the spiral ribbon 6. The spiral ribbon 6 is connected to the two ends of the spiral ribbon support rod and the stirring shaft, and the cross-sectional shape of the spiral ribbon 6 is wavy and wound around the stirring shaft 2. The number of spiral ribbons 6 is the same as the number of air pipes, and an air pipe 5 is installed on the surface of each spiral ribbon 6. Preferably, the number of air pipes 5 is 4-12, and all air pipes are from the outside of the main shell, along the stirring shaft outside the main shell 1, through the sealing sleeve, enter the inside of the main shell, and then along the spiral ribbon support rod, enter the spiral ribbon, and then arrange around the spiral ribbon. The stirring shaft, the spiral ribbon support rod, the spiral ribbon and the air pipe are fixed as a whole and can be rotated under the drive of the motor. Each air pipe has a number of air holes, each of which is connected to the air inlet joint of a gas check valve 17 by threading, and the air hole of the air pipe is connected to the air inlet joint of the gas check valve by threading. The air path direction enters the air inlet joint of the gas check valve from the air pipe, and then enters the gas check valve body, and then comes out from the gas check valve outlet. The outlet end of the gas check valve is designed to be duckbill-shaped, so that the air path outlet is fan-shaped. The function of the gas one-way valve is: the gas can only be purged from the air pipe into the main shell of the mixer, and the air inside the mixer cannot be sucked back into the air pipe, causing the air pipe to be blocked; because the air inside the mixer contains dust particles, and the dust will be blocked after deposition. At the same time, when the mixer is mixing, the material will not enter the air pipe from the outlet of the gas one-way valve due to the physical effect of stirring, so that long-term accumulation can easily cause the air pipe to be blocked. The function of the gas one-way valve can ensure that both gas and dust will not be sucked back into the air pipe, ensuring the patency of the air pipe. The outlet end of the gas one-way valve connected to the air hole faces the inner wall of the main shell 1, that is: by setting the air pipe along the spiral ribbon curve and setting multiple air holes on the air pipe, the entire spiral ribbon curve can be guaranteed to be purged with gas, and then the circumferential rotation of the spiral ribbon driven by the motor can make the entire inner wall of the main shell be purged by gas, thereby achieving the function of cleaning the entire inner wall of the mixer. Four air pipes realize the cleaning function of the inner wall of the mixer.

[0022] The air pipe is connected or disconnected with the air guide ring 3 to realize the connection or disconnection of the air guide ring 3 with the external air path. The air guide ring 3 includes a rotor end and a stator end. When the air pipe 5 is in a connected state with the air guide ring 3, the external interface of the air pipe is connected to the air guide ring rotor air connection end, the rotor air connection end is integrated with the rotor end of the air guide ring, and the rotor end of the air guide ring is rotatably connected with the stator end 19 of the air guide ring through its internal structure. The stator end of the air guide ring is integrated with the stator air connection end of the air guide ring, the stator end of the air guide ring 3 is connected to the external air connection pipe 10, the stator air connection end of the air guide ring is connected to the external air source through the external air connection pipe 10, and the external air connection pipe 10 is communicated with the air pipe 5 through the air guide ring 3. When the air pipe 5 is in a disconnected state with the air guide ring 3, one end of the air pipe 5 is disconnected from the rotor end of the air guide ring 3, the stator end of the air guide ring 3 is connected to the external air connection pipe 10, and the external air connection pipe 10 is disconnected from the air pipe 5. The number of external air pipes 10 is the same as the number of air pipes 5. Preferably, the number of external air pipes 10 is 4-12, and each external air pipe 10 is connected to one air pipe 5. Through the structure of the air guide ring, it can be ensured that the external air source can be obtained during the stirring rotation, so as to achieve the purpose of rotating and purging the inside of the main shell of the mixer. The air guide ring is sleeved on the stirring shaft, and the air guide ring rotor and stator are both sleeved on the stirring shaft, and are non-contact with the stirring shaft with a gap. After the rotor end 20 of the air guide ring is connected to all air pipes, it can rotate with the stirring shaft; its stator end is integrated with the stator support 18, and the stator support is connected to a main support by bolts. A main support 16 is installed at the bottom of the reducer, and a main support 16 is installed at the bottom of the air guide ring 3. The two main supports 16 are respectively fixedly connected to the two sides of the main shell 1.

[0023] When the air guide ring is disconnected, that is, when the mixer is in a mixing state: when the mixer is mixing, the air guide ring is disconnected from all air pipes, the bolts of the stator support and the main support are loosened, and the entire air guide ring is moved a certain distance away from the main shell along the horizontal direction of the mixing shaft to ensure that there is a certain space distance between the air guide ring and all air pipes. If the air guide ring is connected to the air pipe, the air guide ring cannot guide air to achieve the purge function when the mixer is mixing, but it rotates together at this time, which will affect the life of the air guide ring.

[0024] When the air guide ring is in a connected state, that is, when the mixer is in a state that needs to be cleaned: when the mixer is being cleaned, the air guide ring is connected to all air pipes, the bolts of the stator support and the main support are loosened, and the entire air guide ring is moved a certain distance along the horizontal direction of the stirring shaft toward the main shell to ensure that the rotor end of the air guide ring can be smoothly connected to all air pipes, and the stator end of the air guide ring is tightened with the bolts of the stator support and the main support. The air guide ring is connected to the stirring shaft. As the mixer is being cleaned, the motor moves at a low speed to drive the stirring in the clean state of the mixer. The mixer is ventilated with the external air source, and the gas is transmitted through the air guide ring. The gas enters the air pipe on the spiral belt, and then passes through the outlet of the gas one-way valve to purge the inside of the mixer. The air guide ring only rotates when the mixer is in a clean state, or it only functions when the mixer is in a clean state, thereby ensuring the normal service life of the air guide ring.

[0025] A fixed pipe 4 is installed on the upper part of the main shell 1. Preferably, the fixed pipe 4 is fixed just above the inner wall of the main shell of the mixer, and the fixed pipe 4 is parallel to the stirring shaft. The fixed pipe 4 is provided with a plurality of air outlets facing the stirring shaft, and each air outlet is connected to a gas one-way valve through a thread, and the outlet end of the gas one-way valve connected to the air outlet faces the stirring shaft 2. The fixed pipe 4 is fixed, and when the stirring shaft, the spiral support rod, and the spiral ribbon rotate under the drive of the motor, the fixed pipe 4 forms a relative motion therewith, and the gas blown out of the fixed pipe 4 can purge and clean the stirring shaft, the spiral support rod, the spiral ribbon, etc. The fixed pipe 4 realizes the cleaning function of the stirring shaft, the spiral ribbon, and the spiral support rod of the mixer.

[0026] The main shell 1 is processed with a feeding port 7, an exhaust port 8, and a discharging port 9; the exhaust port is connected to an external exhaust fan through an air duct, and the exhaust fan is connected to a PLC control cabinet. The tail gas purged from the inside of the mixer is extracted under the drive of the external exhaust fan. That is, when the mixer needs to be cleaned, all air pipes and fixed pipes are in an air-conducting state, and the inside of the mixer is purged, so that the deposited dust inside the mixer is purged by the gas, and at the same time, the purged tail gas is driven by the exhaust fan outside the exhaust port and is extracted out of the mixer, thereby achieving the purpose of cleaning the mixer. The feeding port 7 is equipped with a feeding valve, and the feeding valve is connected to a PLC control cabinet; the discharging port 9 is equipped with a discharging valve, and the discharging valve is connected to a PLC control cabinet.

[0027] Description of the use process of the present invention:

[0028] (1) When the mixer is in the mixing function: controlled by the PLC, the exhaust fan outside the exhaust port is in the closed state; at the same time, the external air source pipeline switches connecting all air pipes and fixed pipes are turned off to prevent gas conduction; at the same time, manual movement is performed to separate the air guide ring from all air pipes, close the discharge valve, and open the feed valve at the feed port. The discharge port is connected to the discharge valve, and the discharge valve is connected to the interface of the next process. The motor is started, the stirring speed is adjusted to 60-200r / min, and the feed valve at the feed port is opened. The material enters the mixer from the feed port. After the material is mixed evenly under the action of the mixer's ribbon stirring, it is controlled by the PLC to open the discharge valve and the material enters the next process.

[0029] (2) When the mixer is in the state of needing cleaning:

[0030] Controlled by PLC, first, ensure that the mixed materials flow into the next process, close the feeding valve at the feeding port, open the discharging valve at the discharging port, so that the materials flow into the next process, and then close the mixing mechanism of the mixer and the discharging valve at the discharging port; make the exhaust fan outside the exhaust port in a closed state; at the same time, turn off the external air source pipeline switches connecting all air pipes and fixed pipes to prevent gas conduction. Then, through manual movement, make the air guide ring connected to all air pipes.

[0031] Start the motor and adjust the stirring speed to 1-60r / min. The mixer ribbon starts to rotate. At this time, the switches of the external air source pipelines connected to all air pipes and fixed pipes are turned on to make the gas conductive. Gas is blown into all air pipes and fixed pipes. The materials deposited on the inner wall of the mixer, the mixer ribbon and the stirring shaft are disturbed by the blowing of the gas and enter the air environment inside the mixer to form dusty exhaust gas. At the same time, turn on the exhaust fan outside the exhaust port so that it is in the on state. The dusty exhaust gas is extracted from the inside of the mixer through the exhaust port, the pipeline outside the exhaust port, and the exhaust fan. After 5-30 minutes, the dust deposited inside the mixer is blown away and floats in the air. The dusty exhaust gas enters the external exhaust gas treatment system through the exhaust fan for treatment.

[0032] (3) Initial state: After cleaning, the mixer equipment is returned to the initial state. Under the control of the PLC, the mixer's stirring mechanism is turned off, the feeding valve at the feeding port is closed, and the discharge valve at the discharge port is closed, so that the exhaust fan outside the exhaust port is in the off state; at the same time, the external air source pipeline switches connecting all air pipes and fixed pipes are turned off to prevent gas conduction; then, the air guide ring is manually moved to a disconnected state from all air pipes.

[0033] The connection or disconnection of all air pipes and air guide rings can be automatically connected or disconnected by adding additional power transmission devices.

Claims

1. An automatic cleaning mixer, characterized in that: The mixer comprises a main housing (1), a stirring shaft (2), an air guide ring (3), an air pipe (5), and a fixed pipe (4); the stirring shaft (2) passes through the main housing (1), and two sealing sleeves are installed on the stirring shaft (2) outside the main housing (1), and the two sealing sleeves are respectively located on both sides of the main housing (1); an air guide ring (3) is installed at one end of the stirring shaft (2), and a reducer (12) is installed at the other end of the stirring shaft (2), and the reducer (12) is connected to a motor (13); the inside of the main housing (1) The stirring shaft (2) is equipped with a plurality of spiral support rods (11), both ends of each spiral support rod are connected to a spiral ribbon (6), and an air pipe (5) is installed on the surface of the spiral ribbon (6); the air pipe (5) is processed with a plurality of air holes, each of which is connected to a gas one-way valve, and the outlet end of the gas one-way valve connected to the air hole faces the inner wall of the main shell (1); the upper part of the main shell (1) is equipped with a fixed pipe (4), and the fixed pipe (4) is processed with a plurality of gas outlets, each of which is connected to a gas one-way valve, and the gas one-way valve connected to the gas outlet The outlet end faces the stirring shaft (2); the main shell (1) is processed with a feeding port (7), an exhaust port (8), and a discharge port (9); the exhaust port (8) is connected to an exhaust fan, and the exhaust fan is connected to a PLC control cabinet; the feeding port (7) is equipped with a feeding valve, and the feeding valve is connected to the PLC control cabinet; the discharge port (9) is equipped with a discharge valve, and the discharge valve is connected to the PLC control cabinet; wherein the air guide ring (3) includes a rotor end and a stator end, the air pipe (5) is connected or disconnected with the air guide ring (3), and the air pipe (5) is connected to or disconnected with the air guide ring (3). ) is in a connected state with the air guide ring (3), one end of the air pipe (5) is connected to the rotor end of the air guide ring (3), the stator end of the air guide ring (3) is connected to the external air pipe (10), and the external air pipe (10) and the air pipe (5) are communicated through the air guide ring (3); when the air pipe (5) and the air guide ring (3) are in a disconnected state, one end of the air pipe (5) is disconnected from the rotor end of the air guide ring (3), the stator end of the air guide ring (3) is connected to the external air pipe (10), and the external air pipe (10) and the air pipe (5) are disconnected.

2. The automatic cleaning mixer according to claim 1, characterized in that: The number of the air pipes (5) is 4-12, the number of the external air pipes (10) is 4-12, and each external air pipe (10) is in communication with one air pipe (5).

3. The automatic cleaning mixer according to claim 1, characterized in that: A main support is installed at the bottom of the reducer, and another main support is installed at the bottom of the air guide ring (3). The two main supports are respectively fixedly connected to the two sides of the main housing (1).

4. The automatic cleaning mixer according to claim 3, characterized in that: The two sealing sleeves are respectively fitted to the two sides of the main housing (1); the stirring shaft (2) is equipped with two bearing seats, one bearing seat is located between the reducer and a sealing sleeve, and the other bearing seat is located at one end of the stirring shaft (2) where the air guide ring (3) is installed.

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