Polymer glue solution evaporation device and concentration equipment

Abstract

The utility model discloses a polymer glue solution evaporation device and concentration equipment, the polymer glue solution evaporation device comprises an evaporation cylinder assembly and a heating assembly, the evaporation cylinder assembly comprises an outer cylinder body, an inner cylinder body and a top cover, the top cover covers the upper end of the outer cylinder body, the upper end of the inner cylinder body is connected with the top cover, a liquid phase flash evaporation space is formed between the outer cylinder body and the inner cylinder body, and the heating assembly is arranged in the liquid phase flash evaporation space. A liquid inlet flow channel communicated with the liquid phase flash evaporation space and a gas phase outlet communicated with an inner cavity of the inner barrel are formed in the top cover, a liquid outlet is formed in the lower end of the outer barrel, the heating assembly is arranged on the outer barrel and located on the lower side of the inner barrel, and the liquid phase flash evaporation space is laterally separated from the inner cavity of the inner barrel; the gas evaporated from the liquid-phase flash evaporation space cannot directly flow out from the gas-phase outlet and must pass through the bottom end of the inner barrel, so that the movement distance of the gas during primary separation is prolonged, glue solution fog drops mixed in the gas naturally drop under the action of gravity, the loss of the glue solution is reduced, and the content of polymers in a recovered gas-phase solvent is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of polymer devolatilization, and specifically relates to a polymer glue liquid evaporation device and concentrating equipment. Background Art

[0002] The synthesis of many high molecular polymers is carried out in low boiling point inert solvents. Considering factors such as heat and mass transfer in the reaction process, usually a large amount of solvents (and other low boiling point components) are contained in the high molecular glue solution finally synthesized. In order to obtain a purer high molecular polymer material, it is necessary to remove the low boiling point substances therein, i.e., polymer devolatilization. At present, polymer devolatilization mostly adopts flash evaporation process, and a mixed solution of a low boiling point inert solvent and a high molecular polymer under high temperature and high pressure is passed into a relatively low pressure container. Due to the sudden reduction of pressure, the low boiling point inert solvent evaporates quickly to separate the high molecular polymer. In the prior art, although the flash tank used in the flash evaporation process can separate the high molecular polymer, a large amount of high molecular polymer droplets are entrained in the evaporated inert solvent, causing serious waste of polymer and difficulty in subsequent recycling of solvent. For example, the recovery solvent containing the polymer is easy to cause the tower and reboiler to be blocked during the subsequent rectification and refining. Utility Model Content

[0003] In view of the above-mentioned defects or shortcomings, the utility model provides a polymer glue evaporation device and a concentration device, aiming to solve the technical problem that the existing flash tank easily causes the evaporation gas to entrain high molecular polymer droplets.

[0004] To achieve the above-mentioned purpose, the utility model provides a polymer glue evaporation device and a concentration device, wherein the polymer glue evaporation device includes an evaporation cylinder assembly and a heating assembly, the evaporation cylinder assembly includes an outer cylinder, an inner cylinder and a top cover, the top cover is arranged on the upper end of the outer cylinder, the inner cylinder is placed in the outer cylinder and the upper end is connected to the top cover, a liquid phase flash evaporation space is formed between the outer cylinder and the inner cylinder, a liquid inlet channel connected to the liquid phase flash evaporation space and a gas phase outlet connected to the inner cavity of the inner cylinder are formed on the top cover, and a liquid outlet is formed at the lower end of the outer cylinder, and the heating assembly is placed on the outer cylinder and located at the lower side of the inner cylinder.

[0005] In an embodiment of the utility model, the outer cylinder body includes a first straight cylinder section, a first necked cylinder section and a second straight cylinder section which are arranged in sequence from top to bottom, a top cover is arranged at the upper end of the first straight cylinder section, the inner cylinder body is placed in the first straight cylinder section, the first necked cylinder section is necked in the direction from the first straight cylinder section toward the second straight cylinder section, so that the second straight cylinder section is arranged opposite to the inner cylinder body, and the heating component is arranged on the second straight cylinder section.

[0006] In an embodiment of the utility model, the outer cylinder body further comprises a second necked section which is necked downward from the second straight cylinder section, and the bottom end of the second necked section forms a liquid outlet.

[0007] In the embodiment of the utility model, the inner diameter of the first straight cylinder section is D, the inner diameter of the inner cylinder is D1, the height of the inner cylinder is H1, and D1 satisfies: 0.6D≤D1≤0.8D, and H1 satisfies: 0.6D≤H1≤1.2D.

[0008] In the embodiment of the utility model, the inner diameter of the inner cylinder is D1, the inner diameter of the second straight cylinder section is D2, and D2 satisfies: 0.9D1≤D2≤1.1D1.

[0009] In an embodiment of the utility model, the heating assembly includes a heat exchange cylinder, which is sleeved on the outside of the second straight cylinder section and has a heat exchange inner cavity. The heat exchange cylinder is provided with a heat exchange inlet for heat exchange medium to flow in and a heat exchange outlet for heat exchange medium to flow out.

[0010] In an embodiment of the utility model, the heating component also includes a heater and a circulation drive. The heater, the circulation drive and the heat exchange cylinder constitute a circulation loop. The circulation drive is used to drive the heat exchange medium to flow along the circulation loop, and the heater is used to heat the heat exchange medium.

[0011] In an embodiment of the utility model, a liquid inlet channel is formed between the outer cylinder and the inner cylinder on the top cover. The liquid inlet channel is arranged in a ring shape, and a liquid inlet pipe joint is arranged on the top surface of the liquid inlet channel. A plurality of drip holes are formed on the bottom surface of the liquid inlet channel. The drip holes are used to allow the mixed solution to drip from the liquid inlet channel into the liquid phase flash evaporation space.

[0012] In order to achieve the above-mentioned objectives, the utility model also provides a concentration device, wherein the concentration device includes a stirring device and the above-mentioned polymer glue evaporation device, the stirring device includes a stirring shaft and a plurality of scraper assemblies, the stirring shaft can rotate through the top cover and guide from the inner cylinder to the lower end of the outer cylinder, and the plurality of scraper assemblies are all located on the lower side of the inner cylinder and are arranged in sequence along the axial direction of the stirring shaft.

[0013] In an embodiment of the utility model, the scraper assembly includes a scraper body and a connecting rod portion, the connecting rod portion extends from the stirring shaft toward the inner wall of the outer cylinder, and the extension length of the scraper body is adjustable at one end of the connecting rod portion away from the stirring shaft.

[0014] Through the above technical solution, the polymer glue evaporation device and concentration equipment provided by the embodiment of the utility model have the following beneficial effects:

[0015] When the above-mentioned polymer glue evaporation device is used, it includes an evaporation cylinder assembly and a heating assembly. The evaporation cylinder assembly includes an outer cylinder, an inner cylinder and a top cover. The pressure in the outer cylinder is lower than the pressure in the polymer glue preparation device. The mixed solution composed of glue and inert solvent enters the liquid phase flash evaporation space along the liquid inlet flow channel. Due to the decrease in pressure, the boiling point of the inert solvent also decreases. In the process of the mixed solution dripping downward, the inert solvent evaporates rapidly, and the evaporated gas flows from the bottom of the liquid phase flash evaporation space into the inner cavity of the inner cylinder to achieve initial evaporation of the mixed solution. Separation, the mixed solution gathers on the lower side of the outer cylinder and is heated by a heating component to further evaporate and separate the inert solvent, thereby obtaining a pure polymer glue solution. The evaporated gas enters the inner cavity of the inner cylinder and finally flows out from the gas phase outlet on the top cover. The evaporation device is provided with an inner cylinder, and the gas evaporated in the liquid phase flash space cannot flow out directly from the gas phase outlet but must pass through the bottom of the inner cylinder, thereby extending the movement distance of the gas during the initial separation, so that the glue droplets mixed in the gas drip naturally under the action of gravity, thereby reducing the loss of glue solution.

[0016] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide an understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0018] Figure 1 It is a cross-sectional view of a polymer glue concentration device according to an embodiment of the utility model;

[0019] Figure 2 It is a structural schematic diagram of a scraper assembly according to an embodiment of the utility model.

[0020] Description of Reference Numerals

[0021] 1 Evaporation tube assembly 11 Outer tube

[0022] 111 first straight tube section 112 first necked tube section

[0023] 113 Second straight section 114 Second necking section

[0024] 12 inner cylinder 13 top cover

[0025] 131 Liquid inlet channel 132 Liquid dripping hole

[0026] 133 Gas phase outlet 14 Liquid phase flash space

[0027] 15 Liquid outlet 2 Heating component

[0028] 21 heat exchange cylinder 211 heat exchange inner cavity

[0029] 212 heat exchange inlet 213 heat exchange outlet

[0030] 3 Stirring device 31 Stirring shaft

[0031] 32 Scraper assembly 321 Scraper body

[0032] 322 connecting rod part 323 telescopic sleeve part

[0033] 33 Bearing bracket DETAILED DESCRIPTION

[0034] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0035] The polymer glue evaporation device and concentration equipment of the present invention will be described below with reference to the accompanying drawings.

[0036] like Figure 1 As shown, the utility model provides a polymer glue evaporation device, wherein the polymer glue evaporation device comprises:

[0037] The evaporating cylinder assembly 1 comprises an outer cylinder 11, an inner cylinder 12 and a top cover 13. The top cover 13 is disposed on the upper end of the outer cylinder 11. The inner cylinder 12 is disposed in the outer cylinder 11 and the upper end is connected to the top cover 13. A liquid flash space 14 is formed between the outer cylinder 11 and the inner cylinder 12. A liquid inlet channel 131 communicating with the liquid flash space 14 and a gas phase outlet 133 communicating with the inner cavity of the inner cylinder 12 are formed on the top cover 13. A liquid outlet 15 is formed at the lower end of the outer cylinder 11.

[0038] The heating assembly 2 is placed on the outer cylinder 11 and located at the lower side of the inner cylinder 12 .

[0039] When the above-mentioned polymer glue evaporation device is used, it includes an evaporation cylinder assembly 1 and a heating assembly 2. The evaporation cylinder assembly 1 includes an outer cylinder 11, an inner cylinder 12 and a top cover 13. The pressure in the outer cylinder 11 is lower than the pressure in the polymer glue preparation device. The mixed solution composed of glue and inert solvent enters the liquid phase flash evaporation space 14 along the liquid inlet flow channel 131. Due to the decrease in pressure, the boiling point of the inert solvent also decreases. In the process of the mixed solution dripping downward, the inert solvent evaporates rapidly, and the evaporated gas flows from the bottom end of the liquid phase flash evaporation space 14 into the inner cavity of the inner cylinder 12, thereby achieving the initial evaporation of the mixed solution. Separation, the mixed solution gathers on the lower side of the outer cylinder 11 and is heated by the heating component 2, so that the inert solvent is further evaporated and separated, thereby obtaining a pure polymer glue solution, and the evaporated gas enters the inner cavity of the inner cylinder 12, and finally flows out from the gas phase outlet 133 on the top cover 13. The evaporation device is provided with the inner cylinder 12, and the gas evaporated in the liquid phase flash space 14 cannot flow out directly from the gas phase outlet 133, but must pass through the bottom end of the inner cylinder 12, thereby extending the movement distance of the gas during the initial separation, so that the glue droplets mixed in the gas drip naturally under the action of gravity, thereby reducing the loss of glue solution.

[0040] Specifically, the top cover 13 is provided with a liquid inlet channel 131 between the outer cylinder 11 and the inner cylinder 12. The liquid inlet channel 131 is arranged in an annular shape, and a liquid inlet pipe joint is arranged on the top surface of the liquid inlet channel 131. A plurality of drip holes 132 are formed on the bottom surface of the liquid inlet channel 131. The drip holes 132 are used for the mixed solution to drip from the liquid inlet channel 131 into the liquid phase flash evaporation space 14. The mixed solution output by the polymer glue preparation device enters the liquid inlet channel 131 through the pipeline and the liquid inlet pipe joint. The mixed solution spreads along the liquid inlet channel 131 and falls vertically in the form of thin strips when passing through the drip holes 132. Since the mixed solution in the form of thin strips has a higher temperature and a larger surface area, the gas generated by the evaporation of the inert solvent can be quickly separated from the mixed solution. In addition, because the mixed solution contains a large amount of inert solvent and vaporizes quickly, the bubbles generated during the vaporization process continue to expand and burst, and the gas will inevitably contain a large amount of fine glue droplets. Under the obstruction of the inner cylinder 12, the gas and the mixed solution flow downward together and enter the lower side of the inner cylinder 12.

[0041] Specifically, there are two gas phase outlets 133 , and the two gas phase outlets 133 are symmetrically arranged with a central point of the top cover 13 and spaced apart along the radial direction of the top cover 13 .

[0042] In the embodiment of the utility model, the outer cylinder 11 includes a first straight cylinder section 111, a first necked cylinder section 112 and a second straight cylinder section 113 arranged in sequence from top to bottom, the top cover 13 is arranged on the upper end of the first straight cylinder section 111, the inner cylinder 12 is placed in the first straight cylinder section 111, the first necked cylinder section 112 is necked in the direction from the first straight cylinder section 111 to the second straight cylinder section 113, so that the second straight cylinder section 113 is arranged opposite to the inner cylinder 12, and the heating component 2 is arranged on the second straight cylinder section 113. After passing through the liquid phase flash space 14, the mixed solution drips on the inner wall of the first necked cylinder section 112, and flows evenly into the second straight cylinder section 113 along the inner wall of the first necked cylinder section 112, and the second straight cylinder section 113 is provided with a heating component 2, and the mixed solution continues to evaporate and concentrate under the action of the heating component 2.

[0043] In the embodiment of the utility model, the outer cylinder 11 also includes a second necking section 114 which is necked downward from the second straight cylinder section 113 to collect the concentrated glue liquid. The bottom end of the second necking section 114 forms a liquid outlet 15. The concentrated glue liquid enters the second necking section 114 and is finally discharged from the liquid outlet 15.

[0044] In the embodiment of the utility model, the inner diameter of the first straight cylinder section 111 is D, the inner diameter of the inner cylinder 12 is D1, the height of the inner cylinder 12 is H1, and D1 satisfies: 0.6D≤D1≤0.8D, and H1 satisfies: 0.6D≤H1≤1.2D, so as to ensure that the inner cavity of the inner cylinder 12 has a large flow area, and the liquid phase flash space 14 and the inner cavity of the inner cylinder 12 have a large flow distance, so that the glue mist entrained in the gas can re-enter the second straight cylinder section 113 under the action of gravity and merge with the glue, thereby reducing the loss of the glue.

[0045] In the embodiment of the utility model, the inner diameter of the inner cylinder 12 is D1, the inner diameter of the second straight cylinder section 113 is D2, and D2 satisfies: 0.9D1≤D2≤1.1D1, and the inner diameter of the second straight cylinder section 113 is close to or equal to the inner diameter of the inner cylinder 12, ensuring that most of the gas evaporated in the second straight cylinder section 113 can directly enter the inner cavity of the inner cylinder 12, avoiding interference with the natural dripping of the mixed solution in the liquid phase flash space 14.

[0046] In the embodiment of the utility model, the size design of the evaporator cylinder assembly 1 is based on the inner diameter of the first straight cylinder section 111, wherein the inner diameter of the first straight cylinder section 111 is D, and the suitable height H of the first straight cylinder section 111 is between 0.8-1.6D; the suitable inner diameter D2 of the inner cylinder body 12 is between 0.6-0.8D, and the suitable height H1 of the inner cylinder body 12 is between 0.8D2-1.5D2; the suitable inner diameter D3 of the second straight cylinder section 113 is between 0.9D2-1.1D2, and the suitable height H3 of the second straight cylinder section 113 is between 1.0D3-2.5D3; the suitable height H2 of the first necked cylinder section 112 is between 0.2-0.4D; the suitable height H4 of the second necked cylinder section is between 0.5D3-0.8D3; the suitable center circle diameter D1 of the liquid inlet channel 131 is between 0.7-0.9D. Specifically, the inclination angle of the first necked barrel section 112 is preferably 45°, and the inclination angle of the second necked barrel section is preferably 45°.

[0047] In the embodiment of the utility model, the heating assembly 2 includes a heat exchange cylinder 21, which is sleeved on the outer side of the second straight cylinder section 113 and has a heat exchange inner cavity 211. The heat exchange cylinder 21 is provided with a heat exchange inlet 212 for the heat exchange medium to flow in, and a heat exchange outlet 213 for the heat exchange medium to flow out. The heat exchange medium can be water or other solutions with a large specific heat capacity. Compared with the direct heating method, this indirect heating method avoids direct contact and greatly improves the safety of operation. At the same time, indirect heating can control the heating temperature of the material by controlling the temperature, flow rate and other parameters of the heat exchange medium, making the heating process more stable and controllable.

[0048] Of course, the present invention is not limited to this, and the heating component 2 can also be configured as a heating coil, which is arranged around the second straight tube section 113, and the heating temperature is directly controlled by controlling the input voltage.

[0049] In the embodiment of the utility model, the heating assembly 2 further includes a heater, a circulation drive and a controller. The heater, the circulation drive and the heat exchange cylinder 21 constitute a circulation loop. The circulation drive is used to drive the heat exchange medium to flow along the circulation loop. The heater is used to heat the heat exchange medium. The controller is connected to the heater in communication and is configured as follows:

[0050] Control the heater to adjust the temperature according to the preset conditions.

[0051] By constructing a circulation loop, heat energy can be recovered and utilized to the maximum extent. The heat exchange medium discharged from the heat exchange cavity is reintroduced into the heater under the drive of the circulation drive component, so that it participates in the heating process again, thereby reducing energy waste and heat loss and improving the energy utilization efficiency of the device. This recycling design helps to save energy and reduce carbon emissions, and is in line with the principles of low-carbon environmental protection.

[0052] Specifically, the controller controls the heater according to the boiling point of the selected inert solvent, so that the heating temperature of the heater is greater than the boiling point of the inert solvent and does not exceed the boiling point of the polymer glue. Furthermore, a pressure gauge is also provided at the gas phase outlet 133, and the pressure gauge is communicatively connected with the controller, and the controller is further configured as follows:

[0053] The boiling point of the inert solvent is determined based on the real-time pressure feedback from the pressure gauge.

[0054] In order to achieve the above-mentioned objectives, the utility model also provides a concentrating device, wherein the concentrating device includes a stirring device 3 and the above-mentioned polymer glue evaporating device, the stirring device 3 includes a stirring shaft 31 and a plurality of scraper assemblies 32, the stirring shaft 31 can rotate through the top cover 13 and guide from the inner cylinder 12 to the lower end of the outer cylinder 11, and the plurality of scraper assemblies 32 are all located on the lower side of the inner cylinder 12 and are arranged in sequence along the axial direction of the stirring shaft 31. Therefore, the concentrating device provided by the utility model integrates the falling strip flash devolatilization and the scraper assembly 32 falling film evaporation, which can reduce the entrainment of glue droplets, so as to solve the shortcomings of the prior art such as serious glue mist or more equipment to achieve the desired effect and complicated process.

[0055] Specifically, the plurality of scraper assemblies 32 are located on the lower side of the inner cylinder 12 and the extension directions of two adjacent scraper assemblies 32 are opposite, so that during the rotation of the stirring shaft 31, the resistance on both sides of the horizontal plane is balanced as much as possible, so that the position of the stirring shaft 31 remains stable.

[0056] Furthermore, in order to ensure the stability of the rotation of the stirring shaft 31, a bearing bracket 33 is further provided in the second necked cylinder section, and the bearing bracket 33 is formed with a bearing hole for the stirring shaft 31 to pass through. Furthermore, the concentration device also includes a mounting frame for fixing the evaporation cylinder assembly 1, and the evaporation cylinder assembly 1 is conveniently installed in the mounting frame. The mounting frame is also provided with a motor mounting position on the upper side of the evaporation cylinder assembly 1 for installing the motor of the stirring device 3.

[0057] In the embodiment of the utility model, the scraper assembly 32 includes a scraper body 321 and a connecting rod portion 322. The connecting rod portion 322 is extended from the stirring shaft 31 toward the inner wall of the outer cylinder 11, and the extension length of the scraper body 321 is adjustable at the end of the connecting rod portion 322 away from the stirring shaft 31. The scraper assembly 32 adopts a centrifugal setting. When the stirring shaft 31 rotates, the scraper body 321 is thrown toward and pressed against the inner wall of the second straight cylinder section 113 under the action of centrifugal force to ensure that the scraper body 321 can effectively scrape the mixed solution on the inner wall of the second straight cylinder section 113. At the same time, since the scraper body 321 has a certain adjustment margin on the connecting rod portion 322, even after long-term use, the thickness of the scraper body 321 is reduced due to wear, and it can still be ensured that the scraper body 321 can be pressed against the inner wall of the second straight cylinder section 113, thereby extending the service life of the equipment. For details, see Figure 2 One side of the scraper body 321 facing the inner wall of the second straight tube section 113 is in contact with the second straight tube section 113 and is parallel to the stirring shaft 31. The scraper body 321 extends toward one side of the stirring shaft 31 and is provided with a hollow telescopic sleeve 323, and the end of the connecting rod 322 away from the stirring shaft 31 extends into the telescopic sleeve 323.

[0058] Specifically, the stirring shaft 31 extends downward from the bearing hole and is connected to a spiral plate, which extends into the second necking section 114. The spiral plate rotates synchronously with the stirring shaft 31 and drives the polymer glue in the second necking section 114 to flow upward, so that the inert solvent remaining in the polymer glue is vaporized and separated, thereby improving the purity of the obtained polymer glue.

[0059] In the embodiment of the utility model, the concentration device further comprises a cooling device, which is connected to the gas phase outlet 133 and is used to liquefy and cool the gas exhausted from the evaporation cylinder assembly 1 to recover the inert solvent.

[0060] Specifically, the concentration device further includes a first flow meter, a second flow meter, an electric control valve and a control device. The first flow meter is used to record a first flow value of the inert solvent input into the polymer glue preparation device, and the second flow meter is used to record a second flow value of the inert solvent discharged by the cooling device. The electric control valve is arranged at the liquid outlet 15. The control device is respectively connected to the first flow meter, the second flow meter and the electric control valve in a one-to-one correspondence communication, and is configured as follows:

[0061] receiving a first flow value and a second flow value;

[0062] When the difference between the first flow value and the second flow value is smaller than a preset value, the electronically controlled valve is controlled to open.

[0063] By detecting the amount of inert solvent used and the amount of separation, it is ensured that the inert solvent in the mixed solution has been nearly or completely separated, and that the polymer glue flowing out of the liquid outlet 15 has a high degree of purity.

[0064] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0065] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0067] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A polymer glue evaporation device, characterized in that: The polymer glue evaporation device comprises: An evaporating cylinder assembly (1) comprises an outer cylinder (11), an inner cylinder (12) and a top cover (13), wherein the top cover (13) is arranged on the upper end of the outer cylinder (11), the inner cylinder (12) is placed inside the outer cylinder (11) and the upper end is connected to the top cover (13), a liquid phase flash evaporation space (14) is formed between the outer cylinder (11) and the inner cylinder (12), a liquid inlet channel (131) communicating with the liquid phase flash evaporation space (14) and a gas phase outlet (133) communicating with the inner cavity of the inner cylinder (12) are formed on the top cover (13), and a liquid outlet (15) is formed at the lower end of the outer cylinder (11); The heating component (2) is placed on the outer cylinder (11) and located at the lower side of the inner cylinder (12).

2. The polymer glue evaporation device according to claim 1, characterized in that: The outer cylinder (11) comprises a first straight cylinder section (111), a first necked cylinder section (112) and a second straight cylinder section (113) which are arranged in sequence from top to bottom; the top cover (13) is arranged on the upper end of the first straight cylinder section (111); the inner cylinder (12) is placed in the first straight cylinder section (111); the first necked cylinder section (112) is necked in a direction from the first straight cylinder section (111) toward the second straight cylinder section (113) so that the second straight cylinder section (113) is arranged opposite to the inner cylinder (12); and the heating component (2) is arranged on the second straight cylinder section (113).

3. The polymer glue evaporation device according to claim 2, characterized in that: The outer cylinder (11) further comprises a second necked section (114) which is arranged at the lower end of the second straight cylinder section (113) and is arranged to be necked downward, and the bottom end of the second necked section (114) forms the liquid outlet (15).

4. The polymer glue evaporation device according to claim 2, characterized in that: The inner diameter of the first straight cylinder section (111) is D, the inner diameter of the inner cylinder (12) is D1, the height of the inner cylinder (12) is H1, and D1 satisfies: 0.6D≤D1≤0.8D, and H1 satisfies: 0.6D≤H1≤1.2D.

5. The polymer glue evaporation device according to claim 2, characterized in that: The inner diameter of the inner cylinder (12) is D1, the inner diameter of the second straight cylinder section (113) is D2, and D2 satisfies: 0.9D1≤D2≤1.1D1.

6. The polymer glue evaporation device according to claim 2, characterized in that: The heating assembly (2) comprises a heat exchange cylinder (21), the heat exchange cylinder (21) being sleeved on the outer side of the second straight cylinder section (113) and having a heat exchange inner cavity (211), and the heat exchange cylinder (21) being provided with a heat exchange inlet (212) for a heat exchange medium to flow in, and a heat exchange outlet (213) for a heat exchange medium to flow out, at intervals.

7. The polymer glue evaporation device according to claim 6, characterized in that: The heating assembly (2) further comprises a heater and a circulation drive, wherein the heater, the circulation drive and the heat exchange cylinder (21) form a circulation loop, the circulation drive is used to drive the heat exchange medium to flow along the circulation loop, and the heater is used to heat the heat exchange medium.

8. The polymer glue evaporation device according to any one of claims 1 to 7, characterized in that: The top cover (13) is provided with a liquid inlet channel (131) between the outer cylinder (11) and the inner cylinder (12); the liquid inlet channel (131) is arranged in a ring shape, and a liquid inlet pipe joint is arranged on the top surface of the liquid inlet channel (131); a plurality of drip holes (132) are formed on the bottom surface of the liquid inlet channel (131); the drip holes (132) are used for allowing a mixed solution to drip from the liquid inlet channel (131) into the liquid phase flash evaporation space (14).

9. A concentration device, characterized in that: The polymer glue concentration equipment comprises a stirring device (3) and a polymer glue evaporation device according to any one of claims 1 to 8, wherein the stirring device (3) comprises a stirring shaft (31) and a plurality of scraper assemblies (32), wherein the stirring shaft (31) can rotate through the top cover (13) and guide from the inner cylinder (12) to the lower end of the outer cylinder (11), and the plurality of scraper assemblies (32) are all located on the lower side of the inner cylinder (12) and are arranged in sequence along the axial direction of the stirring shaft (31).

10. The concentration device according to claim 9, characterized in that The scraper assembly (32) comprises a scraper body (321) and a connecting rod portion (322); the connecting rod portion (322) is extended from the stirring shaft (31) toward the inner wall of the outer cylinder (11); the extension length of the scraper body (321) is adjustable and is arranged at one end of the connecting rod portion (322) away from the stirring shaft (31).

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