Belt type vacuum dryer for 2, 6-dihydroxytoluene

Abstract

The utility model discloses a belt type vacuum dryer for 2, 6-dihydroxytoluene, which comprises a vacuum box and a feeding channel communicated with one side of the top end of the vacuum box, the top end of the feeding channel is provided with an upper sealing plate, the feeding channel is internally provided with a gear type double-roller material grinding structure for dispersing materials, and the two ends of the feeding channel are respectively provided with an upper sealing plate and a lower sealing plate. An upper bracket and a lower bracket are fixed to the upper side and the lower side of the interior of the vacuum box in a staggered mode correspondingly, electric heating plates are installed on the inner walls of one sides of the upper bracket and the lower bracket correspondingly, and an upper belt feeding structure and a lower belt feeding structure are installed in the upper bracket and the lower bracket correspondingly. By means of the gear type double-roller grinding structure capable of working synchronously with the upper belt feeding structure, entering materials can be ground and dispersed rapidly, the surface area of the materials is increased, and therefore the water evaporation efficiency is improved, compared with traditional direct drying, the ground and dispersed materials can achieve the drying target more rapidly, and the drying efficiency is improved. The drying time is greatly shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of dihydroxytoluene drying, in particular to a belt type vacuum dryer for 2,6-dihydroxytoluene. Background Art

[0002] As an important chemical raw material, 2,6-dihydroxytoluene plays a key role in many fields such as medicine, pesticides and materials. It is mainly used as a pharmaceutical intermediate, a raw material for pesticide synthesis and an auxiliary agent for the synthesis of polymer materials, showing its wide application value. In the processing process, drying is an important link to ensure product quality, which is achieved through a carefully designed process flow, including starting the relevant fans of the vibrating fluidized bed to control the wind pressure, using steam to heat in the heat exchanger to maintain the drying temperature, and then feeding the material at a uniform speed through the feeding hopper feeder, and drying in the fluidized bed. After drying, the material needs to be sampled and tested to ensure that it meets the quality standards, and finally the final product is obtained through screening. The entire drying process requires not only strict compliance with operating specifications, but also ensuring the safe operation of the equipment to ensure product quality and production efficiency;

[0003] For example, the belt vacuum dryer for butylated hydroxytoluene disclosed in the authorization announcement number CN216432265U includes: a feeding system, which is provided with a feeding bin, a material conveyor and a feeder connected in sequence; a drying system, which includes a shell and a drying conveyor belt group arranged in the shell, and the output end of the feeder is connected to the input end of the drying conveyor belt group; a feeding system, which is provided with a discharge hopper and a discharge bin connected in sequence, and the input end of the discharge hopper is connected to the output end of the drying conveyor belt group; a vacuum system arranged on the top of the shell, etc., and the material to be dried enters the drying system through the feeding system and passes through The distribution device is evenly distributed on the heating conveyor belt, and then the belt speed is adjusted. The material is dried as the heating conveyor belt group runs. However, in the process of drying 2,6-dihydroxytoluene material, the 2,6-dihydroxytoluene material entering the dryer through the feeding system has a high water content in the initial state, and is mostly in a clumping and agglomerating state. The material in this state is directly located on the drying conveyor belt group. Compared with the material in a dispersed state, the effective drying area of ​​the clumped material is reduced, resulting in reduced drying efficiency, and longer drying time and higher energy consumption are required to achieve the same drying effect. Utility Model Content

[0004] The purpose of the utility model is to provide a belt vacuum dryer for 2,6-dihydroxytoluene, wherein a feed channel for connecting a feeder is added to the top of a vacuum box, and a gear-type double-roller grinding structure is installed inside the feed channel that can be dynamically connected to one of the belt feeding structures, so that the incoming material is crushed by the gear-type double-roller grinding structure to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a belt vacuum dryer for 2,6-dihydroxytoluene, comprising a vacuum box and a feed channel connected and installed on one side of the top of the vacuum box, and an upper sealing plate is installed on the top of the feed channel, a gear-type double-roller material grinding structure for dispersing materials is arranged inside the feed channel, an upper bracket and a lower bracket are staggeredly fixed on the upper and lower sides of the interior of the vacuum box, and an electric heating plate is installed on the inner wall of one side of the upper bracket and the lower bracket, and an upper belt feeding structure and a lower belt feeding structure are installed inside the upper bracket and the lower bracket, respectively. The structure comprises an upper belt feeding structure and a lower belt feeding structure, the head and tail ends of which are staggered with each other, a vacuum pump group is arranged on one side of the vacuum box, a pulley driving unit and a second reduction motor are respectively installed on both sides of the surface of the vacuum box, the pulley driving unit is used to drive the upper belt feeding structure and the gear-type double-roller grinding structure to work synchronously, and the second reduction motor is used to drive the lower belt feeding structure to work, a PLC control panel is installed on the outer wall of one side of the vacuum box, and the output end of the PLC control panel is electrically connected to the vacuum pump group, the electric heating plate, the second reduction motor and the input end of the pulley driving unit.

[0006] Preferably, a feed inclined plate for guiding the material to fall onto the upper belt feeding structure is installed on the top wall of the vacuum box below the feed channel.

[0007] Preferably, a discharge window is installed on the outer wall of one side of the vacuum box, and a discharge inclined plate for connecting the material at the tail end of the lower belt feeding structure is fixed on the inner wall of the vacuum box on the side of the discharge window.

[0008] Preferably, the gear-type double-roller material grinding structure includes crushing rollers rotatably mounted on both sides of the inside of the feed channel, and a pair of gear transmission structures mounted on the same end of the two crushing rollers for maintaining power connection.

[0009] Preferably, the pulley drive unit includes a right-angle seat installed on the outer wall of one side of the vacuum box, and a stepper motor installed on the outer wall of one side of the right-angle seat, and the output end of the stepper motor is installed with a belt transmission structure for connecting one of the ends of the crushing rollers and the upper belt feeding structure.

[0010] Preferably, the feed ramp is made of aluminum alloy.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the belt vacuum dryer for 2,6-dihydroxytoluene is provided with structures that cooperate with each other, such as a gear-type double-roller material grinding structure and an upper belt feeding structure. Through the gear-type double-roller material grinding structure that can work synchronously with the upper belt feeding structure, the incoming material can be quickly crushed and dispersed, thereby increasing the surface area of ​​the material, thereby improving the efficiency of water evaporation. Compared with traditional direct drying, the crushed and dispersed material can reach the drying target faster, greatly shortening the drying time, and the crushed and dispersed material can be more evenly distributed on the upper belt feeding structure and the lower belt feeding structure, thereby avoiding accumulation and blockage of the material during the drying process and ensuring that the material can be evenly heated. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0013] Figure 2 It is a side view structural schematic diagram of the utility model;

[0014] Figure 3 It is a three-dimensional cross-sectional structural schematic diagram of the utility model;

[0015] Figure 4 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0016] Figure 5 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0017] Figure 6 The three-dimensional structure of the utility model is shown in FIG. Figure 2 .

[0018] In the figure: 1. vacuum box; 101. feed ramp; 102. discharge ramp; 103. discharge window; 2. PLC control panel; 3. feed channel; 301. upper sealing plate; 4. gear-type double-roller grinding structure; 401. crushing roller; 402. gear transmission structure; 5. vacuum pump group; 6. right-angle seat; 7. pulley drive unit; 8. upper bracket; 9. lower bracket; 10. upper belt feeding structure; 11. lower belt feeding structure; 12. electric heating plate; 13. second reduction motor. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-6The utility model provides an embodiment: a belt vacuum dryer for 2,6-dihydroxytoluene, comprising a vacuum box 1 and a feed channel 3 connected and installed on one side of the top of the vacuum box 1, and an upper sealing plate 301 is installed on the top of the feed channel 3, and a gear-type double-roller material grinding structure 4 for dispersing materials is arranged inside the feed channel 3, and an upper bracket 8 and a lower bracket 9 are staggeredly fixed on the upper and lower sides of the vacuum box 1, and an electric heating plate 12 is installed on the inner wall of one side of the upper bracket 8 and the lower bracket 9, and an upper belt feeding structure 10 and a lower belt feeding structure 11 are installed inside the upper bracket 8 and the lower bracket 9, respectively. The head and tail ends of the structure 10 and the lower belt feeding structure 11 are staggered with each other, a vacuum pump group 5 is arranged on one side of the vacuum box 1, and a pulley driving unit 7 and a second reduction motor 13 are respectively installed on both sides of the surface of the vacuum box 1. The pulley driving unit 7 is used to drive the upper belt feeding structure 10 and the gear-type double-roller grinding structure 4 to work synchronously, and the second reduction motor 13 is used to drive the lower belt feeding structure 11 to work. A PLC control panel 2 is installed on the outer wall of one side of the vacuum box 1, and the output end of the PLC control panel 2 is electrically connected to the vacuum pump group 5, the electric heating plate 12, the second reduction motor 13, and the input end of the pulley driving unit 7;

[0021] A feed ramp 101 for guiding the material to fall onto the upper belt feeding structure 10 is installed on the top wall of the vacuum box 1 below the feed channel 3. The feed ramp 101 is made of aluminum alloy. When the feed channel 3 is unloading, the feed ramp 101 guides the dispersed material to fall onto the upper belt feeding structure 10, ensuring that the upper belt feeding structure 10 stably receives the material.

[0022] A discharge window 103 is installed on the outer wall of one side of the vacuum box 1, and a discharge inclined plate 102 for connecting the material at the tail end of the lower belt feeding structure 11 is fixed on the inner wall of the vacuum box 1 on the side of the discharge window 103. When the lower belt feeding structure 11 sends out the material, the discharge inclined plate 102 receives the material to be sent out. When the staff opens the discharge window 103, the material can be discharged along the discharge inclined plate 102.

[0023] The gear-type double-roller material grinding structure 4 includes crushing rollers 401 rotatably mounted on both sides of the inside of the feed channel 3, and a pair of gear transmission structures 402 mounted on the same end of the two crushing rollers 401 for maintaining power connection. The pulley drive unit 7 first drives one of the crushing rollers 401 to rotate, and the other crushing roller 401 also rotates synchronously in the opposite direction under the drive of the pair of gear transmission structures 402. The operator only needs to add the material to the feeder, and the equipment can automatically complete the steps of crushing, dispersing, conveying and drying, which greatly simplifies the operation process;

[0024] The pulley drive unit 7 includes a right-angle seat 6 installed on the outer wall of one side of the vacuum box 1, and a stepper motor installed on the outer wall of one side of the right-angle seat 6. The output end of the stepper motor is installed with a belt transmission structure for connecting the end of one of the crushing rollers 401 and the upper belt feeding structure 10. The pulley drive unit 7 adopts a stepper motor and a belt transmission structure to realize the synchronous operation of the gear-type double-roller grinding structure 4 and the upper belt feeding structure 10. At this time, the process from material crushing to transportation is continuous without interruption, which helps to maintain the stability and continuity of material processing and reduce material loss or quality degradation due to link breakage.

[0025] When the embodiment of the present application is in use, the staff first opens a through hole on the upper sealing plate 301 for the feeder to feed the material, and connects the feed channel 3 with the feeder. When the feeder feeds the material into the feed channel 3 and the vacuum box 1, the staff turns on the vacuum pump group 5, the pulley drive unit 7, the second reduction motor 13 and the electric heating plate 12 through the PLC control panel 2 to work. During this process, the rotation driving directions of the pulley drive unit 7 and the second reduction motor 13 are opposite, so that the conveying directions of the upper belt feeding structure 10 and the lower belt feeding structure 11 are opposite, ensuring that the material is alternately conveyed on the upper belt feeding structure 10 and the lower belt feeding structure 11, and the electric heating plate 12 controls and maintains the required drying temperature. The vacuum pump group 5 makes the interior of the vacuum box 1 reach the required drying vacuum degree. The material is dried during the conveying process on the upper belt feeding structure 10 and the lower belt feeding structure 11 to ensure that the moisture and other volatiles in the material are effectively removed. Since the rotation power of the pulley drive unit 7 is synchronously transmitted to the upper belt feeding structure 10 and the lower belt feeding structure 11 The gear-type double-roller material grinding structure 4 works synchronously inside the feed channel 3. When the agglomerated and lumped materials come into contact with the gear-type double-roller material grinding structure 4, the materials are broken up and dispersed by the grinding action, and the materials in a dispersed state fall onto the upper belt feeding structure 10, and are transported by the upper belt feeding structure 10 and the lower belt feeding structure 11, and then subjected to subsequent vacuum drying treatment. The equipment uses the gear-type double-roller material grinding structure 4 that can work synchronously with the upper belt feeding structure 10, so that the incoming materials can be quickly crushed and dispersed, increasing the surface area of ​​the materials and thus improving the efficiency of water evaporation. Compared with traditional direct drying, the crushed and dispersed materials can reach the drying target faster, greatly shortening the drying time, and the crushed and dispersed materials can be more evenly distributed on the upper belt feeding structure 10 and the lower belt feeding structure 11, avoiding accumulation and blockage of the materials during the drying process, which ensures that the materials can be evenly heated, thereby improving the drying uniformity of the products and ensuring product quality.

Claims

1. A belt vacuum dryer for 2,6-dihydroxytoluene, characterized in that: The invention comprises a vacuum box (1) and a feed channel (3) connected and installed on one side of the top of the vacuum box (1), wherein an upper sealing plate (301) is installed on the top of the feed channel (3), a gear-type double-roller material grinding structure (4) for dispersing materials is arranged inside the feed channel (3), an upper bracket (8) and a lower bracket (9) are staggeredly fixed on the upper and lower sides of the interior of the vacuum box (1), and an electric heating plate (12) is installed on the inner wall of one side of the upper bracket (8) and the lower bracket (9), an upper belt feeding structure (10) and a lower belt feeding structure (11) are installed inside the upper bracket (8) and the lower bracket (9), and the upper belt feeding structure (10) and the lower belt feeding structure (11) are arranged on the inner wall of one side of the upper bracket (8) and the lower bracket (9), respectively. The front and rear ends of the vacuum box (1) are interlaced with each other, a vacuum pump group (5) is arranged on one side of the vacuum box (1), and a pulley drive unit (7) and a second reduction motor (13) are respectively installed on both sides of the surface of the vacuum box (1), the pulley drive unit (7) is used to drive the upper belt feeding structure (10) and the gear-type double-roller grinding structure (4) to work synchronously, and the second reduction motor (13) is used to drive the lower belt feeding structure (11) to work, and a PLC control panel (2) is installed on the outer wall of one side of the vacuum box (1), and the output end of the PLC control panel (2) is electrically connected to the vacuum pump group (5), the electric heating plate (12), the second reduction motor (13), and the input end of the pulley drive unit (7).

2. A belt vacuum dryer for 2,6-dihydroxytoluene according to claim 1, characterized in that: A feed inclined plate (101) for guiding the material to fall onto the upper belt feeding structure (10) is installed on the top wall of the vacuum box (1) below the feed channel (3).

3. A belt vacuum dryer for 2,6-dihydroxytoluene according to claim 1, characterized in that: A discharge window (103) is installed on the outer wall of one side of the vacuum box (1), and a discharge inclined plate (102) for connecting the material at the tail end of the lower belt feeding structure (11) is fixed on the inner wall of the vacuum box (1) on the side of the discharge window (103).

4. A belt vacuum dryer for 2,6-dihydroxytoluene according to claim 1, characterized in that: The gear-type double-roller material grinding structure (4) comprises crushing rollers (401) rotatably mounted on both sides of the inside of the feed channel (3), and a pair of gear transmission structures (402) mounted on the same end of the two crushing rollers (401) for maintaining power connection.

5. A belt vacuum dryer for 2,6-dihydroxytoluene according to claim 4, characterized in that: The pulley drive unit (7) comprises a right-angle seat (6) mounted on the outer wall of one side of the vacuum box (1), and a stepper motor mounted on the outer wall of one side of the right-angle seat (6), wherein the output end of the stepper motor is mounted with a belt transmission structure for connecting the end of one of the crushing rollers (401) and the upper belt feeding structure (10).

6. A belt vacuum dryer for 2,6-dihydroxytoluene according to claim 2, characterized in that: The feed inclined plate (101) is made of an aluminum alloy component.

Images