High-temperature water chestnut type coating machine for catalyst production

Abstract

The utility model belongs to the technical field of catalyst production, and particularly relates to a high-temperature water chestnut type coating machine for catalyst production, which comprises a rack, a water chestnut pot, a driving component and a spraying device, the water chestnut pot is rotatably arranged on the rack, the axis of the water chestnut pot is inclined, and the water chestnut pot is in transmission connection with the driving component on the rack; and the pesticide spraying device is arranged in a feeding port B of the water chestnut pot. The water chestnut pot disclosed by the utility model can provide a stable temperature field of 150-400 DEG C for dipping, coating, drying and other processes in catalyst production, so that the dipping, coating and drying processes in the catalyst production are completed in one equipment in one step, the catalyst production efficiency is effectively improved, and the cost of the catalyst production equipment is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of catalyst production, and in particular relates to a high-temperature water chestnut-type coating machine for catalyst production. Background Art

[0002] The water chestnut coating machine is mainly suitable for the production of sugar coating for pills and tablets in the pharmaceutical industry, and can also be used for rolling, mixing and polishing spherical or granular catalyst carriers in the food, light industry and chemical industry. The sugar coating process using the water chestnut coating machine uses the stable linear speed of the water chestnut pot to ensure that the catalyst carrier forms a flow curve in the pot to ensure that the thickness of the sugar coating layer is uniform.

[0003] In the field of catalyst production technology, the three processes of catalyst impregnation, coating and drying are completed on different equipment respectively. The equipment cost is high, the process flow is complicated, and the production efficiency is low. If a water chestnut-type coating machine is used for catalyst production, the impregnation, coating and drying of the catalyst can be completed in one step, thereby saving equipment costs and improving production efficiency.

[0004] In the production of catalysts using the existing water chestnut-type coating machine, since the temperature of the catalyst carrier in the water chestnut pot is greater than 120°C, the metal salt solution at room temperature will quickly vaporize after entering the water chestnut pot and take away a large amount of heat, causing the temperature in the water chestnut pot to drop. The metal salt solution attached to the surface of the catalyst carrier in the water chestnut pot cannot be dried in time due to the lowering of the temperature in the water chestnut pot, causing the surface of the catalyst carrier to peel off or powder due to collision and friction during tumbling, and thus the coating of the catalyst carrier surface cannot be effectively completed.

[0005] The heating and insulation components in the existing water chestnut coating machines generally heat the water chestnut pot by close contact between the heating wire and the water chestnut pot. This heating method will cause uneven local heating and cooling of the water chestnut pot, and the water chestnut pot cannot be heated and insulated as a whole evenly and effectively, resulting in the water chestnut pot being unable to fully, quickly and evenly dry the catalyst therein.

[0006] In addition, the working temperature in the water chestnut pot of the existing water chestnut coating machine cannot reach 220°C or above due to the limitations of its structure and heating and insulation methods, and cannot reach the temperature range of 150°C-400°C required for catalyst production, and thus cannot carry out stable and effective catalyst production work.

[0007] The utility model designs a high-temperature water chestnut-type coating machine for catalyst production to solve the above problems. Utility Model Content

[0008] In order to solve the above defects in the prior art, the utility model discloses a high-temperature water chestnut-type coating machine for catalyst production, which is realized by adopting the following technical scheme.

[0009] A high-temperature water chestnut coating machine for catalyst production comprises a frame, a water chestnut pot, a driving assembly, and a medicine spraying device. The water chestnut pot is rotatably arranged on the frame with an inclined axis. The water chestnut pot is transmission-connected to the driving assembly on the frame. The medicine spraying device is arranged in a feeding port B of the water chestnut pot. A heating and heat preservation assembly is arranged on the outside of the water chestnut pot. The heating and heat preservation assembly comprises a shell, which is fixed on the frame. The shell is arranged on the outside of the water chestnut pot and has a uniform gap with the water chestnut pot. The feeding port B corresponds to the feeding port A of the shell. The shell is filled with a heating and heat preservation block, which comprises a heat conductive layer, electric heating wires are uniformly arranged in the heat conductive layer, and a heat insulating layer is arranged on the outside of the heat conductive layer.

[0010] Furthermore, a preheating device is provided outside the spraying device.

[0011] Furthermore, the shell is coaxial with the water chestnut pot, and the bottom of the water chestnut pot is connected with a coaxial sleeve through a tray. The sleeve is rotatably arranged in a circular hole in the middle of the shell, and the sleeve is transmission-connected to the driving assembly.

[0012] Furthermore, the drive assembly includes a worm gear reducer and a motor, the output shaft of the worm gear reducer is connected to the shaft sleeve, and a pulley B is installed on the output shaft of the motor, and the pulley B is connected to the pulley A on the input shaft of the worm gear reducer through a synchronous belt.

[0013] Furthermore, an angle adjustment assembly is connected between the frame and the ground, and the angle adjustment assembly includes a support seat and an adjustment screw. The support seat and the frame are hinged, the adjustment screw is threadedly connected to the frame, the lower end of the adjustment screw is against the ground, and the upper end of the adjustment screw is provided with a handwheel.

[0014] Furthermore, the motor is externally connected to a frequency conversion controller.

[0015] Furthermore, a temperature sensor is arranged between the water chestnut pot and the shell, and an infrared temperature measuring probe for monitoring the temperature of the catalyst carrier in the water chestnut pot is arranged in the feeding port B of the water chestnut pot.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The water chestnut pot in the utility model can provide a stable temperature field of 150°C-400°C for processes such as impregnation, coating and drying in catalyst production, so that the three processes of impregnation, coating and drying in catalyst production can be completed in one step in one device, effectively improving the catalyst production efficiency and reducing the equipment cost of catalyst production.

[0018] In the utility model, a plurality of heating and heat-insulating blocks in the external heating and heat-insulating assembly of the water chestnut pot are assembled around the axis of the water chestnut pot and maintain a reasonable radiation gap with the water chestnut pot, and the electric heating wires in each heating and heat-insulating block are evenly distributed, ensuring that the electric heating wires in the heating and heat-insulating assembly are evenly distributed on the outside of the water chestnut pot, thereby realizing uniform radiation heating of the water chestnut pot as a whole by the heating and heat-insulating assembly, ensuring that the water chestnut pot can quickly, evenly and effectively dry the catalyst carrier therein.

[0019] The utility model provides a temperature sensor between the heating and heat-insulating component and the water chestnut pot to control the temperature of the heating and heat-insulating component, and monitors the temperature of the catalyst carrier in the water chestnut pot in real time through an infrared temperature measuring probe, and adjusts the temperature in the water chestnut pot by comprehensively comparing the temperature in the water chestnut pot with the temperature of the heating and heat-insulating component, thereby ensuring that the temperature in the water chestnut pot is always maintained within the range for effective coating and rapid drying of the catalyst carrier therein.

[0020] The motor in the utility model is externally connected to a variable frequency controller. When the temperature of the material in the water chestnut pot exceeds the control temperature, the rotation of the water chestnut pot is accelerated, so that the catalyst carrier in the pot is quickly turned over and the time of direct contact between the catalyst carrier and the pot body is shortened, so that the catalyst carrier is efficiently, quickly and evenly heated. At the same time, the catalyst carrier in the water chestnut pot that is directly in contact with the pot body is prevented from becoming sticky and deteriorating due to the excessive temperature of the water chestnut pot body. When the temperature of the material in the water chestnut pot is lower than the control temperature, the rotation of the water chestnut pot is decelerated, the turning speed of the catalyst carrier in the pot is slowed down, and the time of direct contact between the catalyst carrier and the pot body is prolonged, so that the catalyst carrier is effectively heated, and then the catalyst carrier in the water chestnut pot can be evenly and effectively heated at a lower temperature, so as to achieve the purpose of regulating the temperature of the material in the water chestnut pot.

[0021] The outer wall surface of the spray device in the utility model is provided with a preheating device, which increases the temperature of the metal salt solution when it enters the water chestnut pot, reduces the temperature difference between the metal salt solution and the environment in the water chestnut pot, and further reduces the heat taken away by the partial gasification of the metal salt solution when it enters the water chestnut pot, ensures that the environmental temperature in the water chestnut pot will not change significantly, and ensures the effective coating of the catalyst carrier in the water chestnut pot and the rapid and effective drying of the coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional schematic diagram of the utility model.

[0023] Figure 2 It is a schematic cross-sectional view of a heating and heat preservation component.

[0024] Figure 3 It is a schematic diagram of the assembly structure of the insulation block.

[0025] Figure 4 It is a schematic diagram of the insulation block.

[0026] Figure 5 It is a schematic diagram of the cross section of the insulation block.

[0027] Figure 6 It is a schematic diagram of the cross section of the insulation block.

[0028] Names of the numbers in the figure: 1. Frame; 2. Heating and heat preservation assembly; 201. Shell; 202. Feeding port A; 203. Round hole; 204. Heating and heat preservation block; 2041. Heat conducting layer; 2042. Electric heating wire; 2043. Heat insulating layer; 3. Water chestnut pot; 4. Feeding port B; 5. Tray; 6. Bushing; 7. Drive assembly; 701. Worm gear reducer; 702. Pulley A; 703. Synchronous belt; 704. Pulley B; 705. Motor; 8. Angle adjustment assembly; 801. Support seat; 802. Adjusting screw; 803. Handwheel; 9. Spraying device; 10. Preheating device; 11. Catalyst carrier. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below through embodiments and in combination with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.

[0031] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0032] like Figure 1 As shown, a high-temperature water chestnut coating machine for catalyst production includes a frame 1, a water chestnut pot 3, a driving component 7, and a spraying device 9. The water chestnut pot 3 is rotatably arranged on the frame 1 and the axis is inclined. The water chestnut pot 3 is transmission-connected to the driving component 7 on the frame 1. The spraying device 9 is arranged in the feeding port B4 of the water chestnut pot 3. A heating and heat preservation component 2 is arranged on the outside of the water chestnut pot 3. Figure 2 As shown, the heating and heat preservation component 2 includes a shell 201, as shown in Figure 1 As shown, the shell 201 is fixed on the frame 1, the shell 201 is arranged outside the water chestnut pot 3 and has a uniform gap with the water chestnut pot 3, the feeding port B4 corresponds to the feeding port A202 of the shell, and the shell 1 is filled with a heating and heat preservation block 204, as shown in FIG. Figure 4 , 5 As shown in FIG. 6 , the heating and heat preservation block 204 includes a heat-conducting layer 2041 , electric heating wires 2042 are evenly arranged inside the heat-conducting layer 2041 , and a heat-insulating layer 2043 is arranged outside the heat-conducting layer 2041 .

[0033] like Figure 1 As shown, a preheating device 10 is arranged outside the spraying device 9.

[0034] like Figure 1 , 2 As shown, the shell 201 is coaxial with the water chestnut pot 3, and the bottom of the water chestnut pot 3 is connected with a coaxial sleeve 6 through a tray. The sleeve 6 is rotatably set in a circular hole 203 in the middle of the shell 201, and the sleeve 6 is transmission connected to the driving assembly 7.

[0035] like Figure 1 As shown, the driving assembly 7 includes a worm gear reducer 701 and a motor 705. The output shaft of the worm gear reducer 701 is connected to the shaft sleeve 6. A pulley B704 is installed on the output shaft of the motor 705. The pulley B704 is connected to the pulley A702 on the input shaft of the worm gear reducer 701 through a synchronous belt 703.

[0036] like Figure 1 As shown, an angle adjustment component 8 is connected between the frame 1 and the ground, and the angle adjustment component includes a support seat 801 and an adjusting screw 802. The support seat 801 is hinged to the frame 1, and the adjusting screw 802 is threadedly connected to the frame 1. The lower end of the adjusting screw 802 is against the ground, and the upper end of the adjusting screw 802 is provided with a hand wheel 803.

[0037] The motor 705 in the utility model is externally connected to a frequency conversion controller.

[0038] A temperature sensor is arranged between the water chestnut pot and the shell 201 in the utility model, and an infrared temperature measuring probe for monitoring the temperature of the catalyst carrier 11 in the water chestnut pot 3 is arranged in the feeding port B4 of the water chestnut pot 3 .

[0039] The shaft sleeve 6 and the thickness of the water chestnut pot 3 in the utility model can be adjusted appropriately to improve the mechanical strength of the water chestnut pot 3 at high temperature.

[0040] The working principle or process of the utility model is as follows:

[0041] First, the axial inclination angle of the water chestnut pot 3 is adjusted according to the required tumbling streamline speed of the catalyst carrier 11 in the water chestnut pot 3, so as to adjust the streamline speed of the catalyst carrier 11 tumbling in the water chestnut pot 3, and the hand wheel 803 is rotated to drive the adjusting screw 802 to rotate, and the adjusting screw 802 drives the frame 1 to swing a certain amplitude around the hinge point between it and the support seat 801, and the frame 1 drives the water chestnut pot 3 to swing synchronously with the same amplitude, thereby completing the axial inclination angle of the water chestnut pot 3, so that all particles of the catalyst carrier 11 in the water chestnut pot 3 have basically the same tumbling speed, thereby ensuring that all particles in the catalyst carrier 11 are heated synchronously and evenly.

[0042] After the inclination angle of the axis of the water chestnut pot 3 is adjusted, a quantitative catalyst carrier 11 is added to the water chestnut pot 3 through the feeding port B4 and the feeding port A202, and the motor 705 is started. The motor 705 drives the water chestnut pot 3 to rotate slowly relative to the heating and heat preservation component 2 through the pulley B704, the synchronous belt 703, the pulley A702 and the worm gear reducer 701. At the same time, the electric heating wire 2042 in all the heating and heat preservation blocks 204 in the heating and heat preservation component 2 is started. The heat generated by the electric heating wire 2042 is uniformly radiated and heat-conducted to the water chestnut pot 3 from the surrounding of the water chestnut pot 3 through the heat conductive layer 2041, the wall of the shell 201 and the gap space between the shell 201 and the water chestnut pot 3, so that the water chestnut pot 3 is heated more evenly and it is easier to form a stable temperature field of 150℃-400℃ in the water chestnut pot 3.

[0043] When the temperature in the water chestnut pot 3 reaches the range of 150℃-400℃ and the catalyst carrier 11 in the water chestnut pot 3 is evenly and effectively heated, the metal salt solution is sprayed onto the catalyst carrier 11 in the water chestnut pot 3 through the spray device 9. The metal salt solution is heated by the pre-heating device 10 outside the spray device 9 during the process of passing through the spray device 9, so that after the metal salt solution enters the water chestnut pot 3, there is a small temperature difference between the metal salt solution and the environment in the water chestnut pot 3, reducing the heat taken away by the metal salt solution in the water chestnut pot 3 due to gasification, ensuring that the temperature in the water chestnut pot 3 is basically unaffected.

[0044] The preheated metal salt solution is sprayed onto the catalyst carrier 11 in the water chestnut pot 3 and is evenly wrapped on the surface of the catalyst carrier 11 as the catalyst carrier 11 rolls, thereby completing the impregnation and coating of the catalyst carrier 11 by the metal salt solution. Since the temperature in the water chestnut pot 3 is always maintained in the range of 150°C-400°C and is not affected by the gasification of the metal salt solution, the metal salt solution wrapped on the surface of the catalyst carrier 11 is quickly dried as the catalyst carrier 11 rolls, thereby completing the coating of the surface of the catalyst carrier 11 without the phenomenon of powder falling off or the coating falling off due to the coating not being dried in time. At the same time, the three processes of impregnation, coating, and drying in the catalyst production are completed in one step in the water chestnut pot 3, which effectively improves the catalyst production efficiency and reduces the equipment cost of the catalyst production. The utility model has a reasonable and simple structure.

[0045] During the process of heating and insulating the water chestnut pot 3 by the heating and insulation component 2, the several heating and insulation blocks 204 in the external heating and insulation component 2 of the water chestnut pot 3 are assembled and combined around the axis of the water chestnut pot 3 and maintain a reasonable radiation gap with the water chestnut pot, and the electric heating wire 2042 in each heating and insulation block 204 is evenly distributed, so that the electric heating wire 2042 in the heating and insulation component 2 is evenly distributed on the outside of the water chestnut pot 3. At the same time, the insulation layer 2043 on the outside of each heating and insulation block 204 in the heating and insulation component 2 can effectively prevent heat loss and has a heat preservation effect, thereby realizing continuous and uniform radiation heating of the water chestnut pot 3 as a whole by the heating and insulation component 2, ensuring that the water chestnut pot 3 is quickly, evenly and effectively heated and dried for the catalyst carrier 11 therein.

[0046] The temperature sensor arranged between the heating and insulation component 2 and the water chestnut pot can control the temperature of the heating and insulation component 2, and then control the radiation heat conduction of the heating and insulation component 2 to the water chestnut pot 3, to ensure that the temperature in the water chestnut pot 3 remains unchanged, and monitor the temperature of the catalyst carrier 11 in the water chestnut pot in real time through an infrared temperature measuring probe, and adjust the temperature in the water chestnut pot 3 by comprehensively comparing the temperature in the water chestnut pot 3 with the temperature of the heating and insulation component 2, to ensure that the temperature in the water chestnut pot 3 is always maintained within the range that allows the catalyst carrier 11 therein to be effectively coated and quickly dried.

[0047] When the material temperature in the water chestnut pot 3 exceeds the control temperature, the frequency conversion controller connected to the motor 705 will control the motor 705 to run further quickly, thereby accelerating the rotation of the water chestnut pot 3, causing the catalyst carrier 11 in the pot to flip quickly and shorten the time that the catalyst carrier 11 is in direct contact with the pot body, so that the catalyst carrier 11 is efficiently, quickly and evenly heated, and at the same time, the catalyst carrier 11 in the water chestnut pot 3 that is in direct contact with the pot body is prevented from becoming sticky and deteriorating due to the excessive temperature of the water chestnut pot 3. When the material temperature in the water chestnut pot 3 is lower than the control temperature, the rotation of the water chestnut pot 3 is decelerated, the flipping speed of the catalyst carrier 11 in the pot is slowed down, and the time that the catalyst carrier 11 is in direct contact with the pot body is extended, so that the catalyst carrier 11 is effectively heated, and then the catalyst carrier 11 in the water chestnut pot 3 can be evenly and effectively heated at a lower temperature, so as to achieve the purpose of regulating the material temperature in the water chestnut pot 3.

Claims

1. A high-temperature water chestnut coating machine for catalyst production, comprising a frame (1), a water chestnut pot (3), a driving assembly (7), and a spraying device (9), wherein the water chestnut pot (3) is rotatably arranged on the frame (1) and the axis is inclined, the water chestnut pot (3) is transmission-connected to the driving assembly (7) on the frame (1), and the spraying device (9) is arranged in a feeding port B (4) of the water chestnut pot (3), characterized in that: A heating and heat preservation component (2) is arranged on the outside of the water chestnut pot (3), and the heating and heat preservation component (2) comprises a shell (201), and the shell (201) is fixed on the frame (1). The shell (201) is arranged on the outside of the water chestnut pot (3) and has a uniform gap with the water chestnut pot (3). The feeding port B (4) corresponds to the feeding port A (202) of the shell (201). The shell (201) is filled with a heating and heat preservation block (204), and the heating and heat preservation block (204) comprises a heat conductive layer (2041), and electric heating wires (2042) are uniformly arranged in the heat conductive layer (2041). A heat insulating layer (2043) is arranged on the outside of the heat conductive layer (2041).

2. A high-temperature water chestnut-type coating machine for catalyst production according to claim 1, characterized in that: A preheating device (10) is arranged outside the medicine spraying device (9).

3. The high-temperature water chestnut-type coating machine for catalyst production according to claim 1, characterized in that: The shell (201) is coaxial with the water chestnut pot (3); the bottom of the water chestnut pot (3) is connected to a coaxial shaft sleeve (6) via a tray (5); the shaft sleeve (6) is rotatably arranged in a circular hole (203) in the middle of the shell (201); and the shaft sleeve (6) is drivingly connected to a driving assembly (7).

4. The high-temperature water chestnut-type coating machine for catalyst production according to claim 3, characterized in that: A temperature sensor is arranged between the water chestnut pot (3) and the shell (201), and an infrared temperature measuring probe for monitoring the temperature of the catalyst carrier (11) in the water chestnut pot (3) is arranged in the feed port B (4) of the water chestnut pot (3).

5. The high-temperature water chestnut-type coating machine for catalyst production according to claim 3, characterized in that: The driving assembly (7) comprises a worm gear reducer (701) and a motor (705), wherein the output shaft of the worm gear reducer (701) is connected to the shaft sleeve (6), and a pulley B (704) is installed on the output shaft of the motor (705), and the pulley B (704) is connected to the pulley A (702) on the input shaft of the worm gear reducer (701) through a synchronous belt (703).

6. A high-temperature water chestnut-type coating machine for catalyst production according to claim 5, characterized in that: The motor (705) is externally connected to a frequency conversion controller.

7. The high-temperature water chestnut-type coating machine for catalyst production according to claim 1, characterized in that: An angle adjustment assembly (8) is connected between the frame (1) and the ground, and the angle adjustment assembly comprises a support seat (801) and an adjustment screw (802); the support seat (801) and the frame (1) are hinged, the adjustment screw (802) is threadedly connected to the frame (1), the lower end of the adjustment screw (802) abuts against the ground, and the upper end of the adjustment screw (802) is provided with a hand wheel (803).

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