A uniform material distribution device and material distribution method for a multi-layer mesh belt dryer

Abstract

The present invention discloses a uniform material distribution device and material distribution method for a multi-layer mesh belt dryer, comprising a leg oil cylinder (1), an infrared positioning sensor (2), a track (3), a frame (4), a material distribution transport device (6), a sprocket (8), a reducer (9), and a motor (10). The frame (4) is arranged above the entrance of the dryer, the track (3) is arranged below the frame (4), the material distribution transport device (6) is fixed to the center of the frame (4), and the reducer (9) and the motor (10) are arranged on both sides of the frame (4). When the dried material is transported to the dryer through the material distribution device, the entire material distribution device is pushed horizontally by the oil cylinder to move left and right, so that the material is spread horizontally across the dryer, and the speed and amplitude of the material distribution device are controlled by the electric frequency and infrared positioning sensors and the oil cylinder oil pressure flow control valve regulating valve, so as to achieve the purpose of being suitable for mesh belt dryers of different sizes.

Description

Technical Field

[0001] The invention relates to a material distributing device, in particular to a uniform material distributing device and a material distributing method for a mesh belt type dryer. Background Art

[0002] Multi-layer mesh belt dryer is a commonly used continuous drying equipment. Due to its advantages of fast drying speed, good drying effect and small footprint, it is widely used in ceramic clay, medicinal materials, food, chemical industry and other industries. It is especially suitable for drying block, sheet, strip and granular materials.

[0003] In order to achieve better drying effect of multi-layer mesh belt dryer, the material must be evenly spread on the mesh belt. If the material is not evenly spread on the mesh belt, it will cause the material to be difficult to dry, the drying time will be prolonged, and the energy consumption will increase.

[0004] Patent document CN204404735 discloses a belt dryer uniform material distribution device, which proposes to install a belt material distribution device between the conveyor belt and the dryer, and use a motor to drive the crankshaft connecting rod on the material distribution device to swing left and right, and install claws on both sides of the material distribution device to pull the material on the belt dryer evenly to ensure uniform distribution of the material. The defects are as follows:

[0005] 1. The method of swinging the cloth left and right will cause the material to form a Z-shaped cloth in the dryer, and it cannot evenly cover the dryer.

[0006] 2. Secondly, the use of claws to pull and level the highly viscous materials cannot effectively pull and level the materials. Instead, the materials will gather on both sides of the mesh belt. In addition, the claws are consumable parts and will be damaged if used for a long time, which will cause pollution to high-purity materials.

[0007] 3. This device has redundant front and rear conveyor belts, which occupies a large area and is difficult to maintain.

[0008] 4. The material enters the dryer entrance through the distributor, and the entrance is always open. When the dryer is in a positive pressure state, hot air will overflow from the entrance, causing heat source waste; when the dryer is in a negative pressure state, cold air enters from the entrance, reducing the drying effect.

[0009] In view of this, designing a uniform distribution device for drying materials with different characteristics is an urgent problem to be solved by technicians in this technical field. Summary of the invention

[0010] In order to solve the problems and defects existing in the background technology, the present invention aims to provide a uniform material distribution device and material distribution method which are suitable for materials with different characteristics, do not pollute the materials, have a compact structure, and are easy to maintain.

[0011] The technical solution of the present invention is as follows:

[0012] A uniform material distribution device for a multi-layer mesh belt dryer comprises a leg cylinder, an infrared positioning sensor, a track, a frame, a material distribution transport device, a sprocket, a reducer, and a motor. The frame is arranged above the dryer entrance, the track is arranged below the frame, the material distribution transport device is fixed to the center of the frame, and the reducer and the motor are arranged on both sides of the frame.

[0013] Preferably, it also includes a roller and a material baffle plate, wherein the roller is arranged at the bottom of the frame, and the material baffle plate is arranged above the cloth transport device.

[0014] Preferably, it also includes a flap and a flap counterweight, which are respectively arranged on both sides of the frame.

[0015] Preferably, the outrigger oil cylinder is fixed to the frame by screws.

[0016] Preferably, an infrared positioning sensor is provided on the track.

[0017] Preferably, the outrigger oil cylinder is provided with an oil pressure flow control valve.

[0018] A material distribution method of a uniform material distribution device of a multi-layer mesh belt dryer comprises the following steps:

[0019] (1) Set instrument parameters;

[0020] (2) Place materials;

[0021] (3) Even fabric distribution.

[0022] Preferably, in step (1), operating parameters of the outrigger cylinder, infrared positioning device, reducer, power motor instrument components, etc. are set.

[0023] Preferably, in step (2), the material is placed on a cloth conveyor belt device, and the motor and the reducer drive the cloth conveyor device to rotate, and the frame is moved left and right on the track by oil pressure to spread the material horizontally across the dryer.

[0024] Preferably, in step (3), when the material moves to one side, it is detected by the infrared positioning sensor and a signal is transmitted to the oil cylinder electromagnetic reversing valve to perform reversing movement; at the same time, the speed of left and right movement is controlled by the oil cylinder automatic regulating valve, and the control speed is 5-10s.

[0025] The present invention has the following advantages and positive effects:

[0026] 1. The cloth conveyor mesh belt has a large material receiving area and its speed can be adjusted according to the reducer. It is suitable for materials with high viscosity, high moisture content and required shape.

[0027] 2. While the material conveyor belt is feeding the material forward, it moves left and right at a constant speed, ensuring that the material can be evenly spread on the dryer belt vertically and horizontally.

[0028] 3. In order to ensure that the material is evenly spread over the dryer and obtain a better drying effect, the material to be dried is transported to the dryer through the distribution device, and the entire distribution device is pushed horizontally by the cylinder to move left and right, so that the material is spread horizontally over the dryer, and the speed and amplitude of the distribution device are controlled by the electric frequency and infrared positioning sensor and the cylinder oil pressure flow control valve to achieve the purpose of being suitable for mesh belt dryers of different sizes.

[0029] 4. The device has a compact and simple structure. Its material distribution device can be directly installed under the dehydration or forming equipment, and no other conveying equipment is required, which reduces the floor space and saves energy and reduces consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of the present invention;

[0031] Figure 2 A top view of the present invention;

[0032] Figure 3 It is a side view of the present invention and the dryer.

[0033] In the figure: 1. outrigger cylinder, 2. infrared positioning device, 3. track, 4. frame, 5. roller, 6. cloth transport device, 7. material baffle, 8. sprocket, 9. reducer, 10. power motor, 11. material, 12. flap, 13. flap counterweight, 14. dryer. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings to more clearly and completely illustrate the technical solution of the present invention. Example

[0035] like Figure 1-3As shown, a multi-layer mesh belt dryer uniform material distribution device includes a leg oil cylinder 1, an infrared positioning sensor 2, a track 3, a frame 4, a roller 5, a material conveying device 6, a material blocking plate 7, a sprocket 8, a reducer 9, and a motor 10. The rectangular frame 4 is installed above the entrance of the dryer 14, the track 3 is installed on the front and rear sides of the frame 4, and the material conveying belt device 6 is fixed to the center of the frame. The motor 10 and the reducer 9, the flap 12, and the flap counterweight 13 are installed on the left and right sides of the frame 4. The material 11 falls on the material conveying belt device 6, and the motor 10 and the reducer 7 are connected to the sprocket 8 installed on one side of the material conveying belt through a chain for transmission, driving the material conveying device 6 to rotate forward parallel to the dryer 14, and the speed is controlled to be 5 revolutions per minute, so that the material falls into the dryer 14. The dryer 14 is a three-layer mesh belt dryer with a mesh belt width of 2.0 meters. Rollers 5 are installed at the front and rear bottom of the frame 4, which are parallel to the track 3 below the frame. A leg cylinder 1 is installed on one side of the frame 4 and is fixed to the frame 4 by screws. The frame 4 is moved left and right on the track 3 by oil pressure to spread the material 11 horizontally across the dryer 14. At the same time, an infrared positioning sensor 2 is installed on the outside of the track 3 to limit the left and right movement of the material distribution device to prevent the material 11 from falling out of the dryer 14.

[0036] At the same time, in order to control the left and right movement speed of the frame 4, an oil pressure flow control valve is installed on the outrigger cylinder 1 system. The oil pressure of the outrigger cylinder 1 is adjusted by adjusting the oil pressure flow control valve, thereby controlling the running speed of the frame 4, and the control speed is 5-10s.

[0037] Material blocking plates 7 are installed on both sides above the cloth conveying device 6 to prevent the material 11 from falling off when passing through the cloth conveying device 6.

[0038] The material 11 falls from the cloth conveying device into the entrance of the dryer 14. A flap 12 is installed at the opening of the dryer 14. When the material 11 falls, the flap 12 opens one end of the dryer due to its own weight and falls into the dryer. Since a flap counterweight 13 is installed at the other end of the flap 12, when there is no falling material, the other end of the flap 12 sinks due to the gravity of the installed counterweight 13, so that the flap is closed through the lever principle, which effectively prevents the dry gas in the dryer from being discharged from the entrance of the dryer 14.

[0039] This embodiment provides a feeding method of a uniform feeding device of a multi-layer mesh belt dryer, comprising the following steps:

[0040] (1) Set parameters, set the operating parameters of the outrigger cylinder, infrared positioning device, reducer, power motor and instrument components;

[0041] (2) Placing the material, the material 11 falls on the cloth conveyor belt device 6, the motor 10 and the reducer 7 are connected to the sprocket 8 installed on one side of the cloth conveyor belt through a chain to drive the cloth conveyor device 6 to rotate forward parallel to the dryer 14, and the speed is controlled to be 5 revolutions per minute, so that the material falls into the dryer 14; the frame 4 is moved left and right on the track 3 through oil pressure to spread the material 11 horizontally across the dryer 14;

[0042] (3) To ensure uniform material distribution, an infrared positioning sensor 2 is installed on the outer side of the track 3 to limit the left and right movement of the material distribution device and prevent the material 11 from falling out of the dryer 14. At the same time, in order to control the left and right movement speed of the frame 4, an oil pressure flow control valve is installed on the outrigger cylinder 1 system. By adjusting the oil pressure flow control valve, the oil pressure of the outrigger cylinder 1 is adjusted to control the running speed of the frame 4. The control speed is 5-10s.

[0043] The motor is connected to the cloth conveying mesh belt located in the center of the frame through a reducer by a chain, and moves forward parallel to the dryer, so as to transport the materials on the cloth device to the dryer mesh belt for drying. At the same time, the frame installed on the track of the dryer platform is connected to the leg oil cylinder installed on one side of the dryer by bolts, so that the cloth device moves left and right, so as to obtain the effect of evenly spreading the materials on the dryer mesh belt horizontally. In order to prevent the cloth device from moving too much left and right and causing the materials to fall out of the dryer, infrared positioning sensors are installed on the outer sides of both ends of the track. When the cloth device moves left and right to one side, it is detected by the infrared positioning sensor and the signal is transmitted to the cylinder electromagnetic reversing valve to make a reversing movement, so that the cloth device reciprocates within the limited width. At the same time, the oil pressure is adjusted by the automatic regulating valve of the oil cylinder on the hydraulic system to control the speed of left and right movement, so as to ensure that the materials are evenly and orderly spread in the dryer.

[0044] The model of the motor 10 is GS 90L-4, with a power of 1.5kw. The motor frequency conversion is set at 10-50Hz according to the material feeding amount. The model of the reducer 9 is BWD2-71-1.5. The model of the outrigger oil cylinder is MOB63X 1200*25LB, with a size of φ63mm*1.2m. The model of the infrared positioning sensor is U: 10-36VDC, 220mA, and the model of the oil pressure flow control valve is KC-03.

[0045] In an embodiment of the present invention in the actual process, after the strip mud material 11 containing 20% ​​moisture falls onto the cloth conveying device 6 fixed at the center of the frame 4, the cloth conveying device 6 transports the material to the dryer 14 by a motor, and its frequency conversion is controlled at 30Hz. At the same time, the outrigger cylinder 1 drives the entire frame to move left and right, and the movement speed is controlled to be 10s.

[0046] After the implementation of the present invention, the material is effectively and evenly spread on the dryer mesh belt. Compared with the case where the material distribution device of the present invention is not used before, the material drying speed is shortened from 3 hours to 1.5 hours. Under the same conditions, the moisture content after drying is reduced by 30-50%, ensuring that the material can be dried quickly and evenly, greatly improving the distribution effect and reducing energy consumption.

[0047] This embodiment only illustrates the use of the present invention in a multi-layer belt dryer, and the present invention can also be applied to multi-stage belt dryers, single-layer belt dryers and other types of dryers.

Claims

1. A material distribution method using a multi-layer mesh belt dryer uniform material distribution device, characterized in that: The uniform material distribution device of the multi-layer mesh belt dryer comprises an outrigger cylinder (1), an infrared positioning sensor (2), a track (3), a frame (4), a material distribution device (6), a sprocket (8), a reducer (9), and a motor (10), wherein the frame (4) is arranged above the entrance of the dryer, the track (3) is arranged below the frame (4), the material distribution device (6) is fixed to the center of the frame (4), and the reducer (9) and the motor (10) are arranged on both sides of the frame (4); the device also comprises a roller (5) and a material baffle plate (7), wherein the roller (5) is arranged at the bottom of the frame (4), and the material baffle plate (7) is arranged above the material distribution device (6); the device also comprises a flap (12) and a flap counterweight (13), which are respectively arranged on both sides of the frame (4); the outrigger cylinder (1) is fixed to the frame (4) by screws; the track (3) is provided with an infrared positioning sensor; and the outrigger cylinder (1) is provided with an oil pressure flow control valve; The cloth method includes the following steps: (1) Set instrument parameters: Set the operating parameters of the outrigger cylinder, infrared positioning sensor, reducer, and motor instrument components; (2) Placing materials: The materials are placed on the cloth conveyor. The motor and reducer drive the cloth conveyor to rotate. The oil pressure makes the frame move left and right on the track to spread the materials horizontally across the dryer. (3) Uniform distribution: When the material moves to one side, it is detected by the infrared positioning sensor and the signal is transmitted to the cylinder electromagnetic reversing valve to perform reversing movement; at the same time, the speed of left and right movement is controlled by the hydraulic flow control valve.

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