Drying device for polymerization inhibitor production

Abstract

A drying device for polymerization inhibitor production comprises a machine box (10), a conveying belt (20) and an air guide channel (40), a plurality of evenly-distributed baffles (21) are fixedly arranged on the outer side face of the conveying belt (20), a stock bin (201) for containing materials is arranged between every two adjacent baffles (21), and a plurality of evenly-distributed micropores are formed in the surface of the conveying belt (20) and the surfaces of the baffles (21); the air guide channel (40) is configured to provide hot air into the stock bin (201) or exhaust air from the stock bin (201) through the micropores, so that in the whole conveying process of the conveying belt (20), the part of materials can move along with the stock bin (201), it can be guaranteed that the conveying speed of the materials is basically consistent, the problem that the conveying speed of part of the materials is higher or lower is solved, and the conveying efficiency of the conveying belt (20) is improved. And the same drying effect of the materials is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of polymerization inhibitor production, and specifically relates to a drying device for polymerization inhibitor production. Background Art

[0002] Inhibitor is a substance that can completely terminate the free radical polymerization reaction of olefin monomers. This effect is called inhibition. Inhibitor molecules react with chain free radicals to form non-free radical substances or low-activity free radicals that cannot be triggered, thereby terminating the polymerization. In order to prevent olefin monomers from polymerizing during storage and transportation, a small amount of inhibitor is often added to the monomers and removed before use.

[0003] During the production process, the inhibitor will contain a certain amount of water or other volatile substances, the presence of which may affect its use effect, so it needs to be dried in a vibrating fluidized bed. Since the inhibitor needs to go through a liquid mixing process during the production process, it will contain more water in the initial state, and the materials are easy to stick to each other, so the speed of being transported by the airflow under the action of vibration will also be inconsistent, which means that some agglomerated materials with relatively large volumes are not completely dried, or relatively small powdered materials are over-dried, resulting in inconsistent drying of the inhibitor, which in turn affects the storage and stability of the inhibitor. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention creatively adopts a drying device for producing an inhibitor to at least partially solve the problems raised in the above background technology.

[0005] The technical solution adopted is as follows: In a first aspect of an embodiment of the present invention, a drying device for producing an inhibitor is proposed, comprising: A chassis, wherein the chassis is provided with a feed inlet and a discharge inlet; A conveyor belt is arranged inside the chassis, the upper side of the conveyor belt is a bearing surface for conveying materials, and the feed port is located at the upper side of one end of the bearing surface, and the discharge port is located at the lower side of the other end of the bearing surface; A driving motor is fixedly mounted on the outer side wall of the chassis and is used to drive the conveyor belt to move; An air guide channel, covering the peripheral side of the bearing surface and used for providing hot air to the bearing surface; Among them, a plurality of evenly distributed baffles are fixedly provided on the outer side surface of the conveyor belt, a silo for containing materials is provided between two adjacent baffles, a plurality of evenly distributed micropores are provided on the surface of the conveyor belt and the baffles, and the air guide channel is configured to provide hot air into the silo or extract air from the silo through the micropores.

[0006] Furthermore, the air guide channel includes: A first air guide bin is disposed on the lower side of the bearing surface and can provide hot air into the bin from bottom to top through the micropores; A second air guide bin is disposed on both sides of the bearing surface and provides hot air into the bin from both sides; A third air guide bin is disposed on the upper side of the bearing surface, and the upper end of the baffle is slidably fitted on the bottom surface of the third air guide bin; Among them, more than two of the first air guiding bins, the second air guiding bins and the third air guiding bins are arranged along the conveying direction of the carrying surface, and the temperature in the first air guiding bin and the second air guiding bin gradually decreases along the conveying direction of the carrying surface.

[0007] Furthermore, each of the first air guide chambers is provided with a vibration motor, wherein the output end of the vibration motor acts on the bottom surface of the bearing surface, and an elastic buffer seat is fixedly installed between the vibration motor and the air guide channel.

[0008] Furthermore, the vibration amplitude of the vibration motor increases as the particle size of the inhibitor material particles increases, and the frequency of the vibration motor decreases as the particle size of the inhibitor material particles increases. Along the conveying direction of the bearing surface, the vibration amplitudes of the multiple vibration motors gradually decrease, and along the conveying direction of the bearing surface, the vibration frequencies of the multiple vibration motors gradually increase.

[0009] Furthermore, along the conveying direction of the carrying surface, the air flow speeds in the first air guiding bin and the second air guiding bin gradually increase.

[0010] Furthermore, a first air guide window is provided at the connection between the second air guide bin, the material bin and the first air guide bin, so that the hot air in the first air guide bin can enter the second air guide bin and the material bin through the first air guide window, and the two side walls of the conveyor belt slide in contact with the surface walls of the first air guide window, and a second air guide window is provided at the connection between the third air guide bin and the material bin, so that the airflow in the material bin can enter the third air guide bin through the second air guide window.

[0011] Furthermore, a bracket is fixedly provided on the bottom of the chassis, and a pipe bin is provided on the inner side of the bracket, in which a hot air duct and a circulating air duct are installed, the input end of the hot air duct is connected to an external hot air device, the input end of the circulating air duct is connected to an external circulating fan, and the air flow temperature in the circulating air duct is lower than the air flow temperature in the hot air duct, and the output ends of the hot air duct and the circulating air duct are connected to a first regulating valve and then connected to the first air guide bin, so as to input air flow of a set temperature into the first air guide bin.

[0012] Furthermore, an exhaust duct is installed on the top of the chassis, the input end of the exhaust duct is connected to the third air guide chamber through a second regulating valve, the output end of the exhaust duct is connected to an external exhaust fan and a dehumidifier, and the output end of the dehumidifier is connected to the input end of the circulation fan.

[0013] Furthermore, a driving shaft is fixedly provided at the output end of the driving motor, and the driving shaft is rotatably installed inside the chassis and located on the inner side of the conveyor belt. A rubber gasket is fixedly installed on the outer wall of the driving shaft, and the rubber gasket fits on the inner side of the conveyor belt, and the conveyor belt is driven to move by the rotation of the driving shaft.

[0014] Furthermore, the rubber gasket is configured to be elastically compressed in a radial direction, an airbag is provided inside the rubber gasket, and the thickness of the rubber gasket is set to 1 / 5 to 2 / 5 of the radius of the drive shaft.

[0015] The beneficial effects achieved by the present invention using the above structure are as follows: The present invention has a plurality of evenly distributed baffles fixedly provided on the outer side of the conveyor belt, and a material bin is formed between the baffles, so that during the entire conveying process of the conveyor belt, the part of the material will move with the material bin, thereby ensuring that the material transmission speed is basically consistent, thereby ensuring a consistent drying effect of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a drying device for producing polymerization inhibitors proposed in an embodiment of the present invention; Figure 2 A schematic diagram of a half-section structure of a drying device for producing polymerization inhibitors proposed in an embodiment of the present invention; Figure 3 A schematic diagram of the internal structure of a drying device for producing polymerization inhibitors proposed in an embodiment of the present invention; Figure 4 A schematic diagram of the structure of a conveyor belt in a drying device for producing polymerization inhibitors proposed in an embodiment of the present invention; Figure 5 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction; Figure 6 for Figure 5 Schematic diagram of the cross-section structure.

[0017] Among them, 01, hot air duct; 02, circulating air duct; 03, exhaust duct; 04, first regulating valve; 05, second regulating valve; 10, chassis; 101, feed port; 102, discharge port; 11, bracket; 12, pipeline bin; 20, conveyor belt; 201, silo; 21, baffle; 30, drive motor; 31, drive shaft; 32, rubber gasket; 40, air guide channel; 401, first air guide bin; 402, second air guide bin; 403, third air guide bin; 404, first air guide window; 405, second air guide window; 41, partition; 50, vibration motor; 51, elastic buffer seat.

[0018] The accompanying drawings are used to provide further understanding of the embodiments and constitute a part of the specification. They are used for explanation together with the embodiments and do not constitute a limitation of the embodiments. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection.

[0020] In the description of the embodiments, it should be understood that terms such as "up", "down", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the embodiments.

[0021] During the drying process of the inhibitor material in the vibrating drying fluidized bed, due to the high initial humidity of the material, the materials stick to each other, which makes the material unable to be transported by hot air at a uniform speed. The material after thermal drying is not completely dried or over-dried. Over-drying may cause changes in the molecular structure of the inhibitor, thereby affecting its inhibitory performance. The inhibitor that is not completely dried may contain a certain amount of moisture or other volatile substances. The presence of these substances may affect its use effect, which may not only affect the storage and use stability of the inhibitor, but also may have an adverse effect on the subsequent production process.

[0022] Therefore, an embodiment of the present invention provides a drying device for producing an inhibitor, which aims to solve the problem of inhibitors sticking to each other and inconsistent flow speeds in a fluidized bed leading to different drying degrees. The device mainly includes a chassis 10, a conveyor belt 20, a drive motor 30 and an air guide channel 40.

[0023] like Figure 1 As shown, the chassis 10 is made of stainless steel as a whole and has a closed structure, wherein a feed port 101 is provided on the upper side of one end of the chassis 10 , and a discharge port 102 is provided on the lower side of the other end, and both the feed port 101 and the discharge port 102 can pass through to the interior of the chassis 10 .

[0024] Further, such as Figure 2 As shown, the conveyor belt 20 is arranged inside the chassis 10, and the upper side of the conveyor belt 20 is configured as a bearing surface for conveying materials, and the feed port 101 is located at the upper side of one end of the bearing surface, and the discharge port 102 is located at the lower side of the other end of the bearing surface.

[0025] Furthermore, the inhibitor material entering from the feed port 101 can fall onto the upper side of the conveyor belt 20. The conveyor belt 20 dries the inhibitor material on the upper side during the entire conveying process. After drying, the inhibitor material on the upper side of the conveyor belt 20 falls from the discharge port 102 along with the conveyor belt 20. Therefore, the portion on the upper side of the conveyor belt 20 is called the bearing surface.

[0026] like Figure 1 and Figure 2 As shown, the driving motor 30 is fixedly mounted on the outer wall of the chassis 10, and is used to drive the conveyor belt 20 to move, wherein a driving shaft 31 is fixedly provided at the output end of the driving motor 30, and the driving shaft 31 is rotatably mounted inside the chassis 10 and is located on the inner side of the conveyor belt 20. The conveyor belt 20 can be driven to move by the driving shaft 31 to transport the inhibitor material.

[0027] Further, such as Figure 4 As shown, a plurality of evenly distributed baffles 21 are fixedly provided on the outer side of the conveyor belt 20 , a material bin 201 for containing materials is provided between two adjacent baffles 21 , and a plurality of evenly distributed micro-holes are provided on the surfaces of the conveyor belt 20 and the baffles 21 .

[0028] In some embodiments, the conveyor belt 20 is made entirely of stainless steel or plastic, and is covered with micropores throughout the conveyor belt 20 to facilitate air flow through the conveyor belt 201 for drying the material in the silo 201 .

[0029] In this way, the inhibitor material falling from the feed port 101 onto the conveyor belt 20 will be restricted in the silo 201 under the action of the baffle 21, so that during the entire conveying process of the conveyor belt 20, this part of the material will move with the silo 201, thereby ensuring that the material transmission speed is basically consistent, and there is no problem of fast or slow conveying speed of some materials.

[0030] Further, such as Figure 5 and Figure 6As shown, an air guide channel 40 is also provided in the chassis 10, which is coated on the peripheral side of the bearing surface and is used to provide hot air to the bearing surface, wherein the air guide channel 40 is configured to provide hot air to the silo 201 or extract air from the silo 201 through micropores.

[0031] In some embodiments, the air guide channel 40 includes a first air guide chamber 401 , a second air guide chamber 402 , and a third air guide chamber 403 .

[0032] Among them, the first air guide bin 401 is arranged on the lower side of the bearing surface, and can provide hot air to the material bin 201 from bottom to top through micropores; the second air guide bin 402 is arranged on both sides of the bearing surface, and can provide hot air to the material bin 201 from both sides; the third air guide bin 403 is arranged on the upper side of the bearing surface, and the upper end of the baffle 21 slides on the bottom surface of the third air guide bin 403.

[0033] Furthermore, in order to prevent the inhibitor material in the silo 201 from being over-drying during transportation, more than two first air guide silos 401, second air guide silos 402 and third air guide silos 403 are arranged along the conveying direction of the carrying surface, and the temperature in the first air guide silo 401 and the second air guide silo 402 gradually decreases along the conveying direction of the carrying surface.

[0034] like Figure 2 and Figure 3 As shown, taking the case where the number of the first air guide bin 401, the second air guide bin 402 and the third air guide bin 403 is respectively set to three as an example, wherein the conveying direction along the bearing surface is the first bin, the second bin and the third bin respectively, and the first bin, the second bin and the third bin are separated by a partition 41, the gas temperature in the first bin is set at (70°C, 80°C], the gas temperature in the second bin is set at (60°C, 70°C], and the gas temperature in the third bin is set at (50°C, 60°C], thereby, the inhibitor material is dried by the hot air flow of multiple temperature sections, and the moisture in the inhibitor material is quickly taken out at a relatively high temperature in the initial section, and the inhibitor material is subsequently dried at a relatively low temperature. The inhibitor effect of the inhibitor is closely related to its chemical structure. Low-temperature drying can reduce the change of the chemical structure, thereby maintaining the inhibitor effect of the inhibitor. Low-temperature drying can slow down the evaporation rate of water, so that the powder material maintains good dispersibility, which helps to reduce the hardening and cracking of the surface of the powder material, and makes the surface of the dried inhibitor powder smoother and more delicate.

[0035] In some embodiments, along the conveying direction of the carrying surface, the air flow velocity in the first air guide bin 401 and the second air guide bin 402 gradually increases. In this way, a relatively low air flow velocity is used at a relatively high temperature to extend the contact time between the hot air flow and the inhibitor powder, thereby promoting the hot air to bring out the moisture in the inhibitor powder. At a relatively low temperature, the air flow velocity is increased to accelerate the drying and heat exchange of the inhibitor powder by the air flow. Low-temperature drying consumes less energy than high-temperature drying. The hot air flow is dried and then circulated to the low-temperature area for use, which is beneficial to saving energy and reducing production costs, and can reduce environmental pollution and emissions.

[0036] like Figure 3 , Figure 5 and Figure 6 As shown, a bracket 11 is fixedly provided at the bottom of the chassis 10 , a pipe bin 12 is provided on the inner side of the bracket 11 , a hot air duct 01 and a circulating air duct 02 are installed in the pipe bin 12 , and an exhaust duct 03 is installed on the top of the chassis 10 .

[0037] Among them, the input end of the hot air duct 01 is connected to an external hot air device, the input end of the circulating air duct 02 is connected to an external circulating fan, and the output ends of the hot air duct 01 and the circulating air duct 02 are connected to the first regulating valve 04 and then connected to the first air guide bin 401, which is used to input an air flow of a set temperature into the first air guide bin 401. Taking the first air guide bin 401 as an example in which three are set along the conveying direction of the inhibitor material, three first regulating valves 04 are correspondingly configured, and the opening of the three first regulating valves 04 gradually increases along the conveying direction of the inhibitor material, that is, in the mixing of hot air and cold air, the ratio of cold air gradually increases, so that the hot air flow entering the first air guide bin 401 gradually decreases until the set temperature is reached.

[0038] Furthermore, the input end of the exhaust duct 03 is connected to the third air guide bin 403 through the second regulating valve 05, and the output end of the exhaust duct 03 is connected to the external exhaust fan and the dehumidifier, and the output end of the dehumidifier is connected to the input end of the circulating fan. The air flow temperature in the circulating air duct 02 is lower than the air flow temperature in the hot air duct 01. In this way, the air flow discharged from the exhaust duct 03 is dehumidified and then reintroduced into the circulating air duct 02 for recycling, which can further reduce energy consumption. By mixing and proportioning the air flow in the circulating air duct 02 with the air flow in the hot air duct 01, the air flow temperature in the air guide bin can be gradually reduced along the conveying direction of the inhibitor material.

[0039] like Figure 5As shown, in some embodiments, a first air guide window 404 is provided at the connection between the second air guide bin 402, the material bin 201 and the first air guide bin 401, and the output gas mixed with the hot air duct 01 and the circulating air duct 02 is transported to the first air guide bin 401, wherein part of the gas directly enters the material bin 201 through the first air guide window 404, and the hot air flow is blown from the side to the inhibitor material in the material bin 201, and the other part of the gas enters the second air guide bin 402 from the first air guide bin 401 through the first air guide window 404, and then passes through the micropores on the surface of the conveyor belt 20 from the second air guide bin 402 and is blown into the material bin 201 from the bottom to dry the inhibitor material.

[0040] Furthermore, the two side walls of the conveyor belt 20 slide in contact with the surface wall of the first air guide window 404, so that when the silo 201 is inside the air guide channel 40, a relatively closed space can be formed to prevent the material in the silo 201 from falling off under vibration. In the area outside the air guide channel 40, a limiting plate is provided inside the chassis 10 corresponding to the side part of the conveyor belt 20 to prevent the material on the conveyor belt 20 from falling off.

[0041] Furthermore, a second air guide window 405 is provided at the connection between the third air guide bin 403 and the material bin 201, so that the airflow in the material bin 201 can enter the third air guide bin 403 through the second air guide window 405, and then be sucked out by the exhaust pipe 03. At the same time, according to the different air volume in each air guide bin, the opening of the second regulating valve 05 is adjusted to correspond to the airflow conveying speed of each air guide bin, and the airflow is sucked out.

[0042] like Figure 3 As shown, in order to disperse the inhibitor material in the silo 201 and avoid the problem of large particles being difficult to dry due to adhesion, each first air guide bin 401 is provided with a vibration motor 50, the output end of the vibration motor 50 acts on the bottom surface of the bearing surface, and an elastic buffer seat 51 is fixedly installed between the vibration motor 50 and the air guide channel 40.

[0043] In some embodiments, the elastic buffer seat 51 uses a stainless steel bracket with a rubber block installed at the bottom, so that when the vibration motor 50 is working, it can push the surface of the conveyor belt 20 to vibrate, and use the vibration of the surface of the conveyor belt 20 to shake off the agglomerated materials.

[0044] In some embodiments, the vibration amplitude of the vibration motor 50 increases as the particle size of the inhibitor material particles increases, and the frequency of the vibration motor 50 decreases as the particle size of the inhibitor material particles increases. When the inhibitor material particles are relatively large, the vibration amplitude is adaptively increased to increase the height of the material vibration to prevent heavier material particles from adhering downward and failing to achieve a good drying effect. When the inhibitor material particles are correspondingly small, the vibration amplitude of the vibration motor 50 is correspondingly reduced to keep the inhibitor material particles at a suitable height to fully contact the hot air. Along the conveying direction of the bearing surface, multiple vibration motors are The vibration amplitude of the machine 50 gradually decreases, and the vibration frequency of the multiple vibration motors 50 gradually increases along the conveying direction of the bearing surface. In this way, in the early stage of the conveyor belt 20 conveying the inhibitor material, the inhibitor material is driven with a larger vibration amplitude and a lower vibration frequency, which can shake off the bonded materials and avoid large pieces of adhesion between the materials. In the middle and later stages of conveying the inhibitor material, the inhibitor material is driven with a relatively small vibration amplitude and a higher vibration frequency, which can increase the suspension time of the material and increase the contact time between the inhibitor material and the hot air flow, thereby achieving the effect of promoting the drying of the material.

[0045] like Figure 1 and Figure 4 As shown, a driving shaft 31 is fixedly provided at the output end of the driving motor 30. The driving shaft 31 is rotatably installed inside the chassis 10 and is located on the inner side of the conveyor belt 20. A rubber gasket 32 ​​is fixedly installed on the outer wall of the driving shaft 31. The rubber gasket 32 ​​fits the inner side of the conveyor belt 20 and drives the conveyor belt 20 to move by rotating the driving shaft 31.

[0046] Furthermore, the rubber gasket 32 ​​is configured to be elastically compressed in the radial direction, an airbag is provided inside the rubber gasket 32, and the thickness of the rubber gasket 32 ​​is set to 1 / 5~2 / 5 of the radius of the driving shaft 31. In this way, when the vibration motor 50 drives the conveyor belt 20 to vibrate, the rubber gasket 32 ​​can provide a certain elastic compensation.

[0047] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0048] The above description of the implementation mode is not restrictive, and the drawings show only one of the implementation modes, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention, they should all fall within the scope of protection.

Claims

1. A drying device for producing polymerization inhibitor, characterized in that: include: A machine case (10), wherein the machine case (10) is provided with a feed inlet (101) and a discharge outlet (102); A conveyor belt (20) is arranged inside the chassis (10); the upper side of the conveyor belt (20) is a bearing surface for conveying materials; the feed port (101) is located at the upper side of one end of the bearing surface, and the discharge port (102) is located at the lower side of the other end of the bearing surface; An air guide channel (40), covering the peripheral side of the bearing surface and used for providing hot air to the bearing surface; A plurality of evenly distributed baffles (21) are fixedly provided on the outer side surface of the conveyor belt (20), a material bin (201) for containing materials is provided between two adjacent baffles (21), a plurality of evenly distributed micropores are provided on the surfaces of the conveyor belt (20) and the baffles (21), and the air guide channel (40) is configured to provide hot air into the material bin (201) or extract air from the material bin (201) through the micropores.

2. The drying device for producing polymerization inhibitor according to claim 1, characterized in that: The air guide channel (40) comprises: A first air guide bin (401) is arranged at the lower side of the bearing surface and can provide hot air into the material bin (201) from bottom to top through the micropores; A second air guide bin (402) is arranged on both sides of the carrying surface and provides hot air into the material bin (201) from both sides; A third air guide bin (403) is arranged on the upper side of the bearing surface, and the upper end of the baffle (21) is slidably attached to the bottom surface of the third air guide bin (403); In which, more than two of the first air guiding bin (401), the second air guiding bin (402) and the third air guiding bin (403) are arranged along the conveying direction of the carrying surface, and the temperature in the first air guiding bin (401) and the second air guiding bin (402) gradually decreases along the conveying direction of the carrying surface.

3. The drying device for producing polymerization inhibitor according to claim 2, characterized in that: Each of the first air guide chambers (401) is provided with a vibration motor (50), the output end of the vibration motor (50) acting on the bottom surface of the bearing surface, and an elastic buffer seat (51) is fixedly installed between the vibration motor (50) and the air guide channel (40).

4. The drying device for producing polymerization inhibitor according to claim 3, characterized in that: The vibration amplitude of the vibration motor (50) increases as the particle size of the polymerization inhibitor material particles increases, the frequency of the vibration motor (50) decreases as the particle size of the polymerization inhibitor material particles increases, and along the conveying direction of the bearing surface, the vibration amplitudes of the plurality of vibration motors (50) gradually decrease, and along the conveying direction of the bearing surface, the vibration frequencies of the plurality of vibration motors (50) gradually increase.

5. The drying device for producing polymerization inhibitor according to claim 2, characterized in that: Along the conveying direction of the carrying surface, the air flow speed in the first air guiding bin (401) and the second air guiding bin (402) gradually increases.

6. The drying device for producing polymerization inhibitor according to claim 2, characterized in that: A first air guide window (404) is provided at the connection between the second air guide bin (402), the material bin (201) and the first air guide bin (401), so that hot air in the first air guide bin (401) can enter the second air guide bin (402) and the material bin (201) through the first air guide window (404); the two side walls of the conveyor belt (20) are slidably attached to the surface walls of the first air guide window (404); and a second air guide window (405) is provided at the connection between the third air guide bin (403) and the material bin (201), so that the airflow in the material bin (201) can enter the third air guide bin (403) through the second air guide window (405).

7. The drying device for producing polymerization inhibitor according to claim 2, characterized in that: A bracket (11) is fixedly provided at the bottom of the chassis (10), a pipe bin (12) is provided on the inner side of the bracket (11), a hot air duct (01) and a circulating air duct (02) are installed in the pipe bin (12), an input end of the hot air duct (01) is connected to an external hot air device, an input end of the circulating air duct (02) is connected to an external circulating fan, and the air flow temperature in the circulating air duct (02) is lower than the air flow temperature in the hot air duct (01), and the output ends of the hot air duct (01) and the circulating air duct (02) are connected to a first regulating valve (04) and then connected to the first air guide bin (401), so as to input air flow of a set temperature into the first air guide bin (401).

8. The drying device for producing polymerization inhibitor according to claim 7, characterized in that: An exhaust pipe (03) is installed on the top of the chassis (10); the input end of the exhaust pipe (03) is connected to the third air guide chamber (403) via a second regulating valve (05); the output end of the exhaust pipe (03) is connected to an external exhaust fan and a dehumidifier; and the output end of the dehumidifier is connected to the input end of the circulation fan.

9. The drying device for producing polymerization inhibitor according to claim 1, characterized in that: The invention also comprises a driving motor (30), wherein the driving motor (30) is fixedly mounted on the outer side wall of the chassis (10) and is used to drive the conveyor belt (20) to move; a driving shaft (31) is fixedly provided at the output end of the driving motor (30); the driving shaft (31) is rotatably mounted inside the chassis (10) and is located on the inner side of the conveyor belt (20); a rubber gasket (32) is fixedly mounted on the outer side wall of the driving shaft (31); the rubber gasket (32) is attached to the inner side of the conveyor belt (20), and the conveyor belt (20) is driven to move by the driving shaft (31).

10. The drying device for producing polymerization inhibitor according to claim 9, characterized in that: The rubber gasket (32) is configured to be elastically compressed in a radial direction, an air bag is provided inside the rubber gasket (32), and the thickness of the rubber gasket (32) is set to 1 / 5 to 2 / 5 of the radius of the drive shaft (31).

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