CN215412774U

CN215412774U - Efficient continuous drying device

Info

Publication number: CN215412774U
Application number: CN202121620895.0U
Authority: CN
Inventors: 鲍瑶; 张小兵
Original assignee: Ma'anshan Kesi Chemical Co ltd
Current assignee: Ma'anshan Kesi Chemical Co ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2022-01-04
Anticipated expiration: 2031-07-15

Abstract

The utility model discloses a high-efficiency continuous drying device, and relates to the technical field of drying of solvents in materials. The efficient continuous drying device comprises a primary continuous drying mechanism and a secondary continuous drying mechanism which are connected through a vacuum pipeline, and is an integral closed system, wherein the vacuum degree of the primary continuous drying mechanism is lower than that of the secondary drying mechanism; the primary continuous drying mechanism is used for roughly pumping the solvent in the material, more than 80% of the solvent is generally pumped roughly, the thermal activity of the solvent in the material is large in the initial state, and the solvent can be pumped by a vacuum pump without overhigh vacuum degree; the secondary drying mechanism is used for extracting the solvent in the material finely, the remaining solvent is extracted as much as possible by the fine extraction, after the coarse extraction, the thermal activity of the remaining solvent is reduced, and the material can be dried as much as possible only by a higher vacuum degree. The vacuum pipeline is connected with the two-stage drying mechanism, and the stepped continuous drying is carried out, so that the number of personnel is reduced while the production efficiency is improved, and the production cost is reduced.

Description

Efficient continuous drying device

Technical Field

The utility model relates to the technical field of drying of solvents in materials, in particular to a high-efficiency continuous drying device.

Background

In the field of chemical production, products containing solvents pass through drying equipment, so that the solvent residues in the products meet the product quality standard and are defined as drying, the existing drying process generally comprises the steps that the monomers are dried in batches, materials enter the drying equipment and are dried under the condition of production process parameters set by the products, the quantity of the products fed in each production batch is basically consistent, but the stability of the drying quality of the products produced by each monomer is difficult to ensure due to the difference of the performances of each monomer, the drying capacity under the condition is low, the time for each unit is long, the labor consumption is high, the production efficiency is low, and in addition, the operation process of the materials in each monomer equipment also easily causes the solvent to overflow a system to cause pollution and waste.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved by the utility model

Aiming at the problems of low production efficiency and unstable quality of monomer batch drying production in solvent-containing material drying production in the prior art, the utility model provides the efficient continuous drying device, which is connected with a two-stage drying mechanism through a vacuum pipeline to perform stepped continuous drying, so that the production efficiency is improved, the number of personnel is reduced, and the production cost is reduced.

Technical scheme

In order to solve the problems, the technical scheme provided by the utility model is as follows:

a high-efficiency continuous drying device comprises a primary continuous drying mechanism and a secondary continuous drying mechanism which are connected through a vacuum pipeline, and is an integral closed system, wherein the vacuum degree of the primary continuous drying mechanism is lower than that of the secondary drying mechanism; the primary continuous drying mechanism is used for roughly pumping the solvent in the material, more than 80% of the solvent is generally pumped roughly, the thermal activity of the solvent in the material is large in the initial state, and the solvent can be pumped by a vacuum pump without overhigh vacuum degree; the secondary drying mechanism is used for extracting the solvent in the material finely, the remaining solvent is extracted as much as possible by the fine extraction, after the coarse extraction, the thermal activity of the remaining solvent is reduced, and the material can be dried as much as possible only by a higher vacuum degree.

Furthermore, the solvent after rough pumping and fine pumping is respectively condensed by the condensers externally connected with the primary continuous drying mechanism and the secondary continuous drying mechanism and then recycled, so that the solvent waste and the environmental pollution are avoided.

Further, the primary continuous drying mechanism comprises a feeding tank A, a dryer main body A and a temporary storage hopper which are sequentially connected and communicated; wherein the feed tank A and the temporary storage hopper are externally connected with a vacuum pump A; the dryer main body A is externally connected with a vacuum pump B; the secondary continuous drying mechanism comprises a feeding tank B, a dryer main body B and a discharging hopper which are sequentially connected and communicated; wherein the feeding tank B and the discharging hopper are externally connected with a vacuum pump C; the dryer main body B is externally connected with a vacuum pump D; the bottom of the temporary storage hopper is communicated with the upper part of the feeding tank B through a vacuum pipeline, so that the whole device is connected into an integral closed system, and the solvent overflow under the negative pressure state of the system is avoided to cause waste and pollution.

Further, the vacuum pump A and the vacuum pump C are both screw vacuum pumps; the vacuum pump B and the vacuum pump D are both Roots vacuum pumps, and different vacuum pumps are selected according to different vacuum degree requirements, so that the solvent extraction efficiency of the whole device is improved, and the service life of the whole device is prolonged.

Furthermore, the dryer main body A and the dryer main body B are respectively externally connected with a heating mechanism A and a heating mechanism B so as to improve the thermal activity level of the solvent in the device and improve the drying and solvent extraction efficiency; the inner part of the device respectively conveys materials to respective tail ends from respective head ends through a crawler belt conveying A and a crawler belt conveying B, the conveying speed can be adjusted according to different solvent contents of the materials, and the universality of the whole device is improved.

Furthermore, A, E, J, L material control valves are respectively arranged on the bottom blanking pipe of the feeding tank A, the bottom blanking pipe at the tail end of the dryer main body A, the bottom blanking pipe of the feeding tank B and the bottom blanking pipe at the tail end of the dryer main body B; b, C, D, G, H, K, M vacuum control valves are respectively arranged on a vacuum tube between the vacuum pump B and the dryer main body A, a vacuum tube between the vacuum pump A and the feeding tank A, a vacuum tube between the vacuum pump A and the temporary storage hopper, a vacuum tube between the vacuum pump D and the dryer main body B, a vacuum tube between the vacuum pump C and the feeding tank B, a vacuum tube between the vacuum pump C and the discharging hopper, and a vacuum tube between the discharging hopper and the packaging mechanism; f, I vacuum control valves are respectively arranged at two ends of a vacuum tube between the temporary storage hopper and the feeding tank B, and the two valves are used for switching on and off each passage as required, so that independent closed working units can be formed, and the possibility of gas overflow is further avoided.

Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

(1) according to the efficient continuous drying device provided by the utility model, the primary continuous drying mechanism is used for roughly pumping the solvent in the material, more than 80% of the solvent is roughly pumped, the thermal activity of the solvent in the material is large in the initial state, and the solvent can be pumped by the vacuum pump without overhigh vacuum degree; the secondary drying mechanism is used for extracting the solvent in the material finely, the remaining solvent is extracted as much as possible by the fine extraction, after the coarse extraction, the thermal activity of the remaining solvent is reduced, and the material can be dried as much as possible only by a higher vacuum degree; the vacuum pipeline connects the primary continuous drying mechanism and the secondary continuous drying mechanism and is communicated with an integral closed system, so that the purposes of continuous feeding, continuous conveying, continuous heating, continuous drying and continuous discharging are realized, and the production efficiency is improved; the primary and secondary continuous drying can be finished through automatic interlocking setting, and regular inspection can be carried out, so that the labor consumption is greatly saved;

(2) according to the efficient continuous drying device provided by the utility model, the solvent after rough pumping and fine pumping is condensed by the condenser and then recycled, so that the solvent waste and the environmental pollution are avoided;

(3) according to the efficient continuous drying device, the screw vacuum pump and the Roots vacuum pump are used in a targeted manner, different vacuum pumps are selected according to different vacuum degree requirements, the solvent extraction efficiency of the whole device is improved, and meanwhile, the service life of the whole device is prolonged; the transmission frequency of the crawler belt can be adjusted, the conveying time can be automatically adjusted, and the production efficiency can be effectively improved;

(4) according to the efficient continuous drying device provided by the utility model, the B, C, D, F, I, G, H, K, M vacuum control valve and the A, E, J, L material control valve are respectively used for controlling the fluid in each pipeline, and the on-off of each channel is carried out as required, so that independent closed working units can be formed, and the possibility of gas overflow is further avoided.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

In the drawings: 1. a feed tank A; 2. a vacuum pump A; 3. a dryer body A; 4. a vacuum pump B; 5. a temporary storage hopper; 6. a feed tank B; 7. a vacuum pump C; 8. a dryer main body B; 9. a vacuum pump D; 10. a discharge hopper; 11. a heating mechanism A; 12. a heating mechanism B; 13. conveying by a crawler belt A; 14. b, conveying by a crawler belt; 15. a packaging mechanism; B. c, D, F, I, G, H, K, M is the vacuum control valve of the corresponding air pipe; A. e, J, L are material control valves of corresponding material pipelines.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.

Example 1

As shown in fig. 1, the efficient continuous drying apparatus in this embodiment includes a first-stage continuous drying mechanism and a second-stage continuous drying mechanism connected by a vacuum pipeline, and is an integrated closed system, wherein the vacuum degree of the first-stage continuous drying mechanism is lower than that of the second-stage continuous drying mechanism.

In the efficient continuous drying device in the embodiment, the primary continuous drying mechanism is used for rough pumping of the solvent in the material, more than 80% of the solvent is generally extracted by the rough pumping, the thermal activity of the solvent in the material is large in the initial state, the solvent can be extracted by a vacuum pump without overhigh vacuum degree, and the vacuum pressure is generally 1000-5000 Pa; the secondary drying mechanism is used for extracting the solvent in the material finely, the remaining solvent is extracted as much as possible by the fine extraction, after the coarse extraction, the thermal activity of the remaining solvent is reduced, the material can be dried as much as possible only by a higher vacuum degree, the vacuum pressure is generally within 1000Pa, and the solvent content of the material is generally controlled within 5%. The continuous drying of the first and second levels can be finished by automatic interlocking setting, and regular inspection can be carried out, so that the labor consumption is greatly saved.

Example 2

The efficient continuous drying device in the embodiment has the same basic structure as that of the embodiment 1, and is different and improved in that the solvent after rough pumping and fine pumping is condensed by condensers externally connected with the primary continuous drying mechanism and the secondary continuous drying mechanism respectively and then is recycled, so that the solvent waste is avoided, and the environment is polluted. The primary continuous drying mechanism comprises a feeding tank A1, a dryer main body A3 and a temporary storage hopper 5 which are connected and communicated in sequence; wherein the feed tank A1 and the temporary storage hopper 5 are externally connected with a vacuum pump A2; the dryer main body A3 is externally connected with a vacuum pump B4; the secondary continuous drying mechanism comprises a feeding tank B6, a dryer main body B8 and a discharging hopper 10 which are connected and communicated in sequence; wherein the feed tank B6 and the discharge hopper 10 are externally connected with a vacuum pump C7; the dryer main body B8 is externally connected with a vacuum pump D9; the bottom of the temporary storage hopper 5 is communicated with the upper part of the feeding tank B6 through a vacuum pipeline, so that the whole device is connected into an integral closed system, and the waste and pollution caused by solvent overflow in a negative pressure state of the system are avoided. Further, vacuum pump a2 and vacuum pump C7 are both screw vacuum pumps; the vacuum pump B4 and the vacuum pump D9 are roots vacuum pumps, and different vacuum pumps are selected according to different vacuum degree requirements, so that the solvent extraction efficiency of the whole device is improved, and the service life of the whole device is prolonged. The dryer body A3 and the dryer body B8 are respectively externally connected with a heating mechanism A11 and a heating mechanism B12 so as to improve the thermal activity level of the solvent in the device and improve the drying and solvent extraction efficiency; the interior of the device is respectively conveyed to the respective tail ends from the respective head ends through a crawler belt conveying A13 and a crawler belt conveying B14, the conveying speed can be adjusted according to different solvent contents of the materials, and the universality of the whole device is improved; the transmission frequency of the crawler belt is adjusted, the transmission time is automatically adjusted, and the production efficiency can be effectively improved. A, E, J, L material control valves can be arranged on a bottom blanking pipe of the feeding tank A1, a bottom blanking pipe at the tail end of the dryer main body A3, a bottom blanking pipe of the feeding tank B6 and a bottom blanking pipe at the tail end of the dryer main body B8 respectively; b, C, D, G, H, K, M vacuum control valves are respectively arranged on a vacuum pipe between the vacuum pump B4 and the dryer body A3, a vacuum pipe between the vacuum pump A2 and the feeding tank A1, a vacuum pipe between the vacuum pump A2 and the temporary storage hopper 5, a vacuum pipe between the vacuum pump D9 and the dryer body B8, a vacuum pipe between the vacuum pump C7 and the feeding tank B6, a vacuum pipe between the vacuum pump C7 and the discharging hopper 10, and a vacuum pipe between the discharging hopper 10 and the packaging mechanism 15; f, I vacuum control valves are respectively arranged at two ends of a vacuum pipe between the temporary storage hopper 5 and the feeding tank B6, and the two valves are used for switching on and off each passage as required, so that independent closed working units can be formed, and the possibility of gas overflow is further avoided.

The high-efficient continuous drying device of this embodiment, its working process is:

firstly, the roots vacuum pumps 4 and 9 evacuate the air in the

dryer bodies

3 and 8 to form vacuum;

then

heating mechanisms

11 and 12 heat corresponding heating elements in the dryer and start

caterpillar tracks

13 and 14 for conveying;

after the corresponding production process parameter conditions are met, the screw vacuum pump 2 supplies the feeding tank 1 with air, the vacuum is balanced with the vacuum of the dryer main body 3 after the vacuum is achieved, the butterfly valve A is opened to start feeding after the vacuum is balanced, and the materials are conveyed through the crawler 13.

Then after the material reaches the tail end of the first-stage drying, the screw vacuum pump feeding hopper 5 is empty, the vacuum balance with the dryer main body 3 is achieved after the vacuum is achieved, the butterfly valve E is opened after the balance, the material starts to be discharged to the hopper 5, meanwhile, the feeding tank 6 of the next-stage drying starts to be empty through the screw vacuum pump 7, after the empty filling is completed, the hopper 5 of the previous stage starts to be empty, and after the empty filling is completed, the F, I is opened, a valve is cut off, and the vacuum material pumping is started;

then, the screw vacuum pump 7 supplies the feeding tank 6 with air, the vacuum is balanced with the vacuum of the dryer main body 8 after the vacuum is achieved, the butterfly valve J is opened to start feeding after the balance is achieved, and the materials are conveyed through the crawler 14;

and finally, after the material reaches the tail end of the secondary drying, the material is consistent with the previous-stage drying operation, and the material starts to be discharged.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.

Claims

1. The utility model provides a high-efficient continuous drying device which characterized in that: the device comprises a primary continuous drying mechanism and a secondary continuous drying mechanism which are connected through a vacuum pipeline, and is an integral closed system, wherein the vacuum degree of the primary continuous drying mechanism is lower than that of the secondary drying mechanism; the first-stage continuous drying mechanism performs rough pumping on the solvent in the material, and the second-stage continuous drying mechanism performs fine pumping on the solvent in the material.

2. The efficient continuous drying device according to claim 1, characterized in that: and the solvent after rough pumping and fine pumping is respectively condensed by condensers externally connected with the primary continuous drying mechanism and the secondary continuous drying mechanism and then recycled.

3. The efficient continuous drying device according to claim 1, characterized in that: the primary continuous drying mechanism comprises a feeding tank A (1), a dryer main body A (3) and a temporary storage hopper (5) which are sequentially connected and communicated; wherein the feed tank A (1) and the temporary storage hopper (5) are externally connected with a vacuum pump A (2); the dryer main body A (3) is externally connected with a vacuum pump B (4); the secondary continuous drying mechanism comprises a feeding tank B (6), a dryer main body B (8) and a discharging hopper (10) which are connected and communicated in sequence; wherein the feeding tank B (6) and the discharging hopper (10) are externally connected with a vacuum pump C (7); the dryer main body B (8) is externally connected with a vacuum pump D (9); the bottom of the temporary storage hopper (5) is communicated with the upper part of the feeding tank B (6) through a vacuum pipeline, so that the whole device is connected into an integral closed system.

4. The efficient continuous drying apparatus according to claim 3, wherein: the vacuum pump A (2) and the vacuum pump C (7) are both screw vacuum pumps; and the vacuum pump B (4) and the vacuum pump D (9) are both roots vacuum pumps.

5. The efficient continuous drying device according to claim 4, characterized in that: the dryer main body A (3) and the dryer main body B (8) are respectively externally connected with a heating mechanism A (11) and a heating mechanism B (12), and materials are conveyed from respective head ends to respective tail ends through a crawler belt conveying A (13) and a crawler belt conveying B (14) in the dryer main body A and the dryer main body B.

6. The efficient continuous drying device according to claim 5, characterized in that: a, E, J, L material control valves are respectively arranged on a bottom blanking pipe at the tail end of the feeding tank A (1), a bottom blanking pipe at the tail end of the dryer main body A (3), a bottom blanking pipe at the feeding tank B (6) and a bottom blanking pipe at the tail end of the dryer main body B (8); b, C, D, G, H, K, M vacuum control valves are respectively arranged on a vacuum tube between the vacuum pump B (4) and the dryer main body A (3), a vacuum tube between the vacuum pump A (2) and the feeding tank A (1), a vacuum tube between the vacuum pump A (2) and the temporary storage hopper (5), a vacuum tube between the vacuum pump D (9) and the dryer main body B (8), a vacuum tube between the vacuum pump C (7) and the feeding tank B (6), a vacuum tube between the vacuum pump C (7) and the discharging hopper (10), and a vacuum tube between the discharging hopper (10) and the packaging mechanism (15); f, I vacuum control valves are respectively arranged at two ends of the vacuum tube between the temporary storage hopper (5) and the feeding tank B (6).