Multi-stage vibration dryer

Abstract

The present invention relates to a multi-stage vibration dryer, which is applied in the technical field of lithium battery raw material drying equipment, and comprises a frame and a plurality of vibration drying boxes, wherein the plurality of vibration drying boxes are arranged along the height direction of the frame and the frame is elastically connected, a feed port is arranged at the upper part of one end of the vibration drying box, and a discharge port is arranged at the lower part of the other end, and the discharge port of the vibration drying box is connected with another adjacent feed port, and an electromagnetic heating element is arranged at the bottom of each vibration drying box. The present invention has the effect of reducing the residual moisture after the raw material is dried.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery raw material drying equipment, in particular to a multi-stage vibration dryer. Background Art

[0002] In the manufacture of lithium-ion battery electrodes, the positive electrode slurry is composed of a binder, a conductive agent, a positive electrode material, etc.; the preparation of the negative electrode slurry includes a series of processes such as mixing, dissolving, and dispersing between liquids and liquids, and between liquids and solid materials, and this process is accompanied by changes in temperature, viscosity, and environment. In the production process, the raw material particles of lithium batteries need to be mixed in a certain proportion, then dried and cooled, and finally calcined.

[0003] A Chinese patent with announcement number CN206160628U discloses an energy-saving vibrating fluidized bed dryer, which mainly includes a dryer body and a vibrating motor arranged at the bottom of the dryer body; the dryer body includes a base, a box body arranged on the base, a box cover arranged on the box body, a vibrating screen plate arranged at the connection between the box body and the box cover, a guide plate arranged below the vibrating screen plate, and an air inlet plate arranged below the guide plate; the air inlet plate is provided with an opening running through from top to bottom; a feed port is provided at one end of the box cover, and a discharge port is provided at the other end of the box body corresponding to the feed port; an air inlet is provided on one side of the box body, and the air inlet is connected to the lower surface of the opening of the air inlet plate through a hose; an air outlet is provided on the top of the box cover.

[0004] However, in the actual drying process, since the raw materials are only dried once, there is still a lot of moisture left in the raw materials, which can easily affect the quality of the subsequent raw material molding. Summary of the invention

[0005] In view of the shortcomings of the prior art, the object of the present invention is to provide a multi-stage vibration dryer, which has the effect of reducing the residual moisture of raw materials after drying.

[0006] The above-mentioned inventive object of the present invention is achieved through the following technical scheme: a multi-stage vibration dryer, comprising a frame and a plurality of vibration drying boxes, wherein the plurality of vibration drying boxes are arranged along the height direction of the frame and elastically connected to the frame, a feed port is provided at the upper part of one end of the vibration drying box, and a discharge port is provided at the lower part of the other end, the discharge port of the vibration drying box is connected to another adjacent feed port, and an electromagnetic heating element is provided at the bottom of each of the vibration drying boxes.

[0007] By adopting the above technical solution, during drying, the raw materials are put into the feeding end of the first vibration drying box. During the transmission of the raw materials, the electromagnetic heating element heats the raw materials to evaporate the moisture in the raw materials. When the raw materials fall from the discharging end of the first vibration drying box to the second vibration drying box, the raw materials continue to be heated and dried until the raw materials fall from the discharging end of the last vibration drying box, thereby realizing multi-stage drying of the raw materials, reducing the residual moisture in the raw materials, and facilitating improving the molding quality of the raw materials in the later stage.

[0008] In a preferred example, the present invention can be further configured as follows: a vibration cooling box is provided below the vibration drying box at the bottom of the frame, the structure of the vibration cooling box is the same as that of the vibration drying box, and the discharge port of the vibration drying box at the bottom is connected to the feed port of the vibration cooling box;

[0009] A cooling element is arranged at the bottom of the vibration cooling box. The cooling element comprises a water inlet pipe, a water outlet pipe and a plurality of branch pipes connected between the water inlet pipe and the water outlet pipe.

[0010] By adopting the above technical solution, the operator connects the water inlet pipe with the water source, and the cooling water is diverted from the water inlet pipe to various branch pipes, and then collected to the water outlet pipe for discharge, forming a water cycle. When the dried raw materials fall into the vibration cooling box, the heat in the raw materials is transferred to the cooling water and taken away by the water cycle, which plays a cooling role on the raw materials and facilitates the operator to collect the raw materials.

[0011] In a preferred example, the present invention can be further configured as follows: the corresponding discharge ports and feed ports are connected via a hose.

[0012] By adopting the above technical solution, the hose can reduce the scattering of raw materials when they fall, and can make the vibrations of each vibration box independent to avoid mutual influence.

[0013] In a preferred example, the present invention can be further configured as follows: a plurality of vibration boxes are vertically arranged on a frame.

[0014] By adopting the above technical solution, the vertical arrangement is beneficial to saving the space occupied by the vibration conveying box, making the structure compact.

[0015] In a preferred example, the present invention can be further configured as follows: a material taking port is provided on the upper side of the vibration box.

[0016] By adopting the above technical solution, the material taking port makes it convenient for the operator to extract the raw materials and check the drying condition.

[0017] In a preferred example, the present invention can be further configured as follows: the vibration drying box includes a material box and vibration motors symmetrically installed on both sides of the material box, the feed port and the discharge port are arranged on the material box, and a plurality of pillars are provided on the frame, each of the pillars is connected to an angle steel through a compression spring, and the angle steel is connected to the side wall of the material box.

[0018] By adopting the above technical solution, when working, the vibration motor is started to make the material box vibrate, the raw materials are put into the material feeding port and transported forward under the vibration of the material box, and the structure is simple.

[0019] In a preferred example, the present invention can be further configured as follows: the angle steel is fixed to the material box by an adjusting screw, and a waist-shaped groove for the adjusting screw to pass through is provided on the angle steel.

[0020] By adopting the above technical solution, the waist-shaped groove provides a certain displacement margin for the adjusting screw, so that the operator can change the inclination angle of the material box by adjusting the relative position of the material box and the angle steel, thereby adjusting the speed of raw material transportation, which is convenient and flexible.

[0021] In a preferred example, the present invention can be further configured as follows: the material box is a round tube, at least one of the material boxes is connected to an exhaust pipe for vacuuming, and the material boxes corresponding to each vibration drying box are provided with sealing members.

[0022] By adopting the above technical solution, air is sucked out through the exhaust pipe, so that on the one hand, the steam and odor in the material box are discharged and processed uniformly, and on the other hand, with the cooperation of the valve, a vacuum negative pressure is formed in the heated material box, thereby performing vacuum drying, which is beneficial to improving the raw material drying effect and the range of raw materials that can be dried.

[0023] In a preferred example, the present invention can be further configured as follows: the frame is provided with a cooling water box extending obliquely downward below the discharge port of the vibrating cooling box, a plurality of cooling material pipes are provided in the cooling water box, and the upward oblique ends of each of the cooling material pipes are connected through a dividing box, and the two ends of the cooling water box are respectively connected to the water inlet pipe and the water outlet pipe through the first water pipe and the second water pipe.

[0024] By adopting the above technical solution, the water in the water inlet pipe is input into the cooling water box by the first water pipe, and then transported back to the water outlet pipe by the second water pipe for discharge; after the raw materials are output, they fall on the cooling water box and slide down along the cooling water box, and the circulating water in the cooling water box cools the raw materials again. At the same time, the recessed setting of the material trough enables the raw materials in the material trough to be covered by the cooling water, thereby enhancing the cooling effect of the raw materials.

[0025] In summary, the present invention includes at least one of the following beneficial technical effects:

[0026] 1. The residual moisture in the raw materials is reduced by multi-stage drying of the raw materials; the vibration box is arranged vertically, with a compact structure and small space occupation;

[0027] 2. Use the vacuum pipe to draw negative pressure in the circular tube material box, which is conducive to the discharge of odor and realizes the vacuum drying of raw materials; the dried raw materials are secondary cooled by cooling elements and cooling water boxes to enhance the raw material effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of embodiment 1.

[0029] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0030] Figure 3 It is a structural schematic diagram of the first embodiment for reflecting the feed port and the discharge port.

[0031] Figure 4 It is a structural schematic diagram of the first embodiment for reflecting the cooling element.

[0032] Figure 5 It is a structural diagram of the second embodiment.

[0033] Figure 6 This is a schematic diagram of the structure of the material box according to the second embodiment.

[0034] In the figure, 1, frame; 11, vibration drying box; 111, feed port; 112, discharge port; 113, electromagnetic heating element; 12, vibration cooling box; 13, cooling element; 131, water inlet pipe; 132, water outlet pipe; 133, branch pipe; 14, hose; 15, material taking port; 151, temperature sensor; 16, end cover; 101, material box; 102, vibration motor; 103, support; 104, compression spring; 105, angle steel; 106, waist groove; 107, adjustment screw; 2, exhaust pipe; 21, seal; 22, cooling water box; 221, first water pipe; 222, second water pipe; 23, cooling material pipe; 24, material distribution box. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0036] Embodiment 1: Figure 1 and Figure 2As shown, a multi-stage vibration dryer disclosed in the present invention comprises a frame 1, on which two vibration drying boxes 11 and a vibration cooling box 12 are arranged in sequence from top to bottom in the vertical direction. The vibration drying boxes 11 are elastically connected to the frame 1 and electromagnetic heating elements 113 are provided at the bottom of the two vibration drying boxes 11. The electromagnetic heating elements 113 are electromagnetic heaters. A feed port 111 is provided at the upper part of one end of the vibration drying box 11, and a discharge port 112 is provided at the lower part of the other end.

[0037] like Figure 3 As shown, the vibration cooling box 12 and the vibration drying box 11 are both vibration boxes with the same structure. The discharge port 112 and the feed port 111 of two adjacent vibration boxes are connected by a hose 14. Each vibration box is provided with a feeding port 15 for extracting samples. The vibration box is also provided with a temperature sensor 151 at the feeding port 15 for monitoring the drying temperature in the vibration box.

[0038] like Figure 3 and Figure 4 As shown, a cooling element 13 is provided at the bottom of the vibration cooling box 12. The cooling element 13 includes an inlet pipe 131 and an outlet pipe 132 which are arranged in parallel on the bottom surface of the vibration cooling box 12. A plurality of branch pipes 133 extending along the length direction of the vibration cooling box 12 are connected between the inlet pipe 131 and the outlet pipe 132.

[0039] like Figure 3 As shown, the bottom of the vibration drying box 11 and the vibration cooling box 12 are connected with end covers 16 by screws to cover the pipelines in the electromagnetic heating element 113 and the cooling element 13, and the water inlet pipe 131 and the water outlet pipe 132 pass through the end cover 16, wherein one end of the water inlet pipe 131 passing through the end cover 16 is connected to the external water source and is installed with a solenoid valve; when the solenoid valve is opened, cooling water is input from the water inlet pipe 131, diverted to each branch pipe 133, and then converged to the water outlet pipe 132 for discharge, forming a water cycle.

[0040] During drying, the raw materials are put into the feed port 111 of the vibration drying box 11 located above. The electromagnetic heater heats the raw materials during the transmission process. The raw materials after the initial heating and drying fall from the hose 14 to the vibration drying box 11 located below for secondary heating, and finally fall into the vibration cooling box 12. The cooling water absorbs the heat transferred from the raw materials and takes it away through the water circulation, realizing the cooling effect on the raw materials, so that the raw materials can be collected for the next process. The secondary drying of the raw materials prolongs the heating time of the raw materials and reduces the possibility of residual moisture in the raw materials. At the same time, since the various vibration boxes are arranged vertically, the space required for the vibration boxes is saved while ensuring the raw material transmission stroke.

[0041] like Figure 1 and Figure 2As shown, the vibration drying box 11 includes a material box 101 and vibration motors 102 symmetrically installed on both sides of the material box 101, a feed port 111 and a discharge port 112 are arranged at both ends of the material box 101 and are distributed one above and one below, a material taking port 15 is arranged on the upper end surface of the material box 101, and the material taking ports 15 of each material box 101 are located at the same end; two groups of pillars 103 are arranged on the frame 1 and are spaced apart along the length direction of the material box 101, and the number of pillars in each group is two and they are symmetrically distributed about the material box 101, and each pillar 103 is connected to an angle steel 105 through a compression spring 104, one end of the angle steel 105 is connected to the side wall of the material box 101 through an adjusting screw 107, and a waist-shaped groove 106 is opened on the angle steel 105 for the adjusting screw 107 to pass through, and the waist-shaped groove 106 extends along the height direction of the angle steel 105, so that a certain relative displacement margin is left between the material box 101 and the angle steel 105, thereby adjusting the inclination angle of the material box 101. When the vibration motor 102 is turned on, the material box 101 vibrates under the action of the vibration motor 102 , so that the raw materials are transported to the discharge port 112 .

[0042] like Figure 3 As shown, the electromagnetic heating element 113 is installed on the bottom surface of the first and second material boxes 101 from top to bottom, and the cooling element 13 is installed on the bottom surface of the third material box 101.

[0043] like Figure 1 As shown, the axis of the vibration motor 102 on two adjacent material boxes 101 is tilted in opposite directions, so that the conveying directions of the raw materials in the two adjacent material boxes 101 are opposite, realizing the three-level transmission of the raw materials. In actual production and processing, the material box 101 can be spliced ​​with multiple sections of square tubes to adjust its overall length as needed.

[0044] Principle: The vibration motor 102 is started, the solenoid valve is opened, the water inlet pipe 131 is connected to the water source, and the cooling water is input into the cooling water box 22 through the first water pipe 221, and then input into the water outlet pipe 132 from the second water pipe 222 and discharged together; the operator puts the raw material into the first material box 101 from the feed port 111 located at the top, and the material box 101 vibrates under the action of the vibration motor 102, so that the raw material is transmitted to the discharge port 112, and at the same time, the electromagnetic heater heats the raw material, so that the moisture in the raw material is continuously evaporated; the raw material after the first drying falls from the discharge port 112 to the feed port 111 of the second material box 101, and the raw material is heated and dried for the second time in the second material box 101, and then falls from the discharge port 112 of the second material box 101 to the feed port 111 of the third material box 101, and is output after being cooled by water circulation.

[0045] Embodiment 2: A multi-stage vibration dryer, such as Figure 5As shown, the difference from Example 1 lies in that the material box 101 adopts a seamless round tube, the uppermost material box 101 is connected to an exhaust pipe 2, and the material boxes 101 corresponding to each vibration drying box 11 are provided with a seal 21, the seal 21 includes a plurality of butterfly valves, and the butterfly valves are installed on the feed port 111 and the discharge port 112 of the upper material box 101 and the discharge port 112 of the lower material box 101.

[0046] like Figure 5 As shown, the three butterfly valves are divided into the first, second and third according to the raw material transmission sequence. When drying, the raw material is put into the first material box 101, the first and second butterfly valves are closed, and the third butterfly valve is opened. The exhaust pipe 2 is connected to the vacuum pump, and the material taking port 15 is sealed. When heating, since the first and second material boxes 101 form a negative pressure vacuum under the action of the vacuum pump, the moisture inside the raw material is diffused to the surface through the pressure difference and is heated and evaporated, thereby enhancing the drying effect of the raw material.

[0047] like Figure 5 As shown, the frame 11 is provided with a cooling water box 22 extending obliquely downward below the discharge port 112 of the vibrating cooling box 12, the downwardly inclined end of the cooling water box 22 is connected to the water inlet pipe 131 through a first water pipe 221, and the upwardly inclined end is connected to the water outlet pipe 132 through a second water pipe 222, and a plurality of parallel cooling pipes 23 are provided in the cooling water box 22, the axis of the cooling pipes 23 is parallel to the inclination direction of the cooling water box 22, both ends of each cooling pipe 23 extend out of the cooling water box 22, and the upward end of each cooling water pipe is connected through a dividing box 24, and the dividing box 24 is located directly below the discharge port 112.

[0048] The raw materials output after water circulation cooling fall into the material distribution box 24, and the raw materials are dispersed into each cooling material pipe 23, and slide down along the cooling material pipe 23. The cooling water in the cooling water box 22 performs secondary cooling on the raw materials. Since the raw materials are dispersed and wrapped by the cooling water, the cooling speed and cooling effect of the raw materials are increased.

[0049] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-stage vibration dryer, characterized in that: The invention comprises a frame (1) and a plurality of vibration drying boxes (11), wherein the plurality of vibration drying boxes (11) are arranged along the height direction of the frame (1) and are elastically connected to the frame (1), wherein the upper portion of one end of the vibration drying box (11) is provided with a feed port (111), and the lower portion of the other end is provided with a discharge port (112), the discharge port (112) of the vibration drying box (11) is connected to another adjacent feed port (111), and the bottom of each vibration drying box (11) is provided with an electromagnetic heating element (113); The frame (1) is provided with a vibration cooling box (12) below the vibration drying box (11) located at the bottom, the structure of the vibration cooling box (12) and the vibration drying box (11) are both vibration boxes with the same structure, and the discharge port (112) of the vibration drying box (11) located at the bottom is connected to the feed port (111) of the vibration cooling box (12); A cooling element (13) is provided at the bottom of the vibration cooling box (12), and the cooling element (13) comprises a water inlet pipe (131), a water outlet pipe (132), and a plurality of branch pipes (133) connected between the water inlet pipe (131) and the water outlet pipe (132); The vibration drying box (11) comprises a material box (101) and vibration motors (102) symmetrically mounted on both sides of the material box (101); the feed port (111) and the discharge port (112) are arranged on the material box (101); a plurality of pillars (103) are arranged on the frame (1); each of the pillars (103) is connected to an angle steel (105) via a compression spring (104); and the angle steel (105) is connected to a side wall of the material box (101); The angle steel (105) is fixed to the material box (101) by means of an adjusting screw (107), and a waist-shaped groove (106) is provided on the angle steel (105) for the adjusting screw (107) to pass through; The material box (101) is a round tube, at least one of the material boxes (101) is connected to an exhaust pipe (2) for vacuuming, and a sealing member (21) is provided on the material box (101) corresponding to each vibration drying box (11); The frame (1) is provided with a cooling water box (22) extending obliquely downward below the discharge port (112) of the vibration cooling box (12); a plurality of cooling material pipes (23) are provided in the cooling water box (22); an end of each cooling material pipe (23) extending obliquely upward is connected via a material distribution box (24); and both ends of the cooling water box (22) are connected to a water inlet pipe (131) and a water outlet pipe (132) via a first water delivery pipe (221) and a second water delivery pipe (222), respectively.

2. The multi-stage vibration dryer according to claim 1, characterized in that: The corresponding discharge port (112) and feed port (111) are connected via a hose (14).

3. The multi-stage vibration dryer according to claim 1, characterized in that: A plurality of vibration boxes are arranged vertically on the frame (1).

4. The multi-stage vibration dryer according to claim 1, characterized in that: A material taking opening (15) for taking materials is provided on the upper side of the vibration box.

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