Surface sizing device capable of automatically controlling temperature

Abstract

The utility model discloses an automatic temperature control surface sizing device which comprises a glue storage tank used for storing glue liquid, a glue injection port and a glue outlet are formed in the glue storage tank, a stirring device is arranged in the glue storage tank, and the automatic temperature control surface sizing device further comprises a heat exchange mechanism arranged outside the glue storage tank and used for carrying out cold and heat exchange with the glue liquid in the glue storage tank; and the temperature control mechanism is connected with the heat exchange mechanism and is used for controlling the temperature of the glue solution in the glue storage tank. The device has the beneficial effects that the temperature of a glue solution coated on the surface of paper is quickly adjusted and controlled within a certain range, the viscosity of the glue solution is kept stable, and the stability of the surface sizing quality is ensured; the protrusions are arranged on the inner wall of the jacket and / or the outer wall of the glue storage tank, cold and hot water form turbulent flow in the root areas of the protrusions and then rapidly exchange heat after passing through the snakelike channel, and the heat exchange efficiency is improved. The heat medium is the condensate water from the drying cylinder in the papermaking process, no additional heating device is needed, energy is effectively saved, and the equipment cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to papermaking technical field relates to a kind of automatic temperature control surface sizing device, specifically related to the automatic temperature control surface sizing device of the glue temperature for being coated on the surface of paper, quick heat exchange can be quickly adjusted and controlled. BACKGROUND

[0002] In papermaking process, the surface sizing is usually used to improve the paper surface strength or give the paper certain function. The traditional paper surface sizing device includes a glue storage unit, which includes a glue storage tank 1', a glue pump 2', a glue filter 3' and a glue outlet pipe 4' connected in sequence. The glue inlet pipe 5' is provided on the glue storage tank, and the agitator 6' is arranged in the glue storage tank 1'. The glue for paper surface sizing is stored in the glue storage tank. Since the viscosity of the glue is greatly affected by environmental factors, controlling the temperature of the glue is a key point for controlling the quality of paper surface sizing. In order to keep the glue in the glue storage tank at a stable environmental temperature, the authorized announcement No. CN208340576U discloses a glue constant temperature system, which adds a glue temperature control device and a constant temperature hot water output device for providing constant temperature hot water. The temperature of the glue is maintained within the set range by the above-mentioned device, and the viscosity of the glue is maintained within the expected range, thereby improving the quality of the product. However, the above-mentioned glue constant temperature system has the following new problems: 1. The above-mentioned glue temperature control device only has heating function. Once the temperature of the glue in the glue storage tank is too high, the glue temperature control device needs to re-adjust the temperature of the constant temperature hot water, and then the constant temperature hot water reaching the set temperature is delivered to the water heating jacket. This process will have the defect of lagging adjustment, so that the system cannot quickly cool down, resulting in low temperature adjustment efficiency of the system; 2. The above-mentioned constant temperature system needs to separately configure a constant temperature hot water output device to heat the hot water, which increases the energy consumption and equipment cost, and is not conducive to energy saving and consumption reduction.

[0003] Therefore, there is an urgent need for a glue application device that can quickly adjust the temperature without additional configuration of a constant temperature hot water output device, save energy consumption and production cost. SUMMARY

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide an automatic temperature control surface sizing device to solve the problems of the existing glue application device, such as slow and timely cooling, the need for additional configuration of a constant temperature hot water output device, low adjustment efficiency and large energy consumption.

[0005] To solve the above-mentioned problems, the utility model adopts the following technical scheme:

[0006] An automatic temperature control surface sizing device, comprising a glue storage tank for storing glue, the glue storage tank is provided with a glue injection port and a glue outlet, and an agitating device is arranged in the glue storage tank, further comprising:

[0007] a heat exchange mechanism arranged outside the glue storage tank for cold and hot exchange with glue liquid in the glue storage tank; and

[0008] a temperature control mechanism connected with the heat exchange mechanism for controlling the temperature of glue liquid in the glue storage tank.

[0009] As a preferred embodiment of the present application, the heat exchange mechanism comprises a jacket, which is sleeved outside the glue storage tank and fixedly connected with the glue storage tank, and a heat exchange cavity is formed between the inner wall of the jacket and the outer wall of the glue storage tank; the jacket is provided with a hot medium inlet, a cold medium inlet and a liquid outlet, which are in communication with the heat exchange cavity, the hot medium inlet is connected with a dryer condensate pipeline system, the cold medium inlet is connected with a water supply pipeline system, and the liquid outlet is in communication with an industrial water pool.

[0010] As a preferred embodiment of the present application, the hot medium is dryer condensate water from a papermaking process, and the temperature is 70-90°C, so that no additional heating device is needed, and energy is effectively saved.

[0011] As a preferred embodiment, the cold medium is industrial water at a normal temperature of 5-20°C.

[0012] As a preferred embodiment of the present application, the height of the region of the glue storage tank wrapped by the jacket is 1 / 2-2 / 3 of the height of the glue storage tank. Generally, the liquid level of glue liquid in the glue storage tank is maintained at 1 / 2-2 / 3, and the glue liquid is automatically replenished when the liquid level is lower than 1 / 2, and the glue liquid is automatically stopped when the liquid level reaches 2 / 3. When the height of the region of the glue storage tank wrapped by the jacket is 1 / 2-2 / 3 of the height of the glue storage tank, the efficient regulation of the temperature of glue liquid can be ensured, and the part of the glue storage tank not wrapped by the jacket can maintain a normal temperature when the liquid level of glue liquid is lower than 2 / 3, so that the residue of glue liquid after evaporation of water is prevented from remaining on the inner wall surface of the glue storage tank, and the phenomenon of “skin” is prevented, which leads to cleaning difficulty.

[0013] As a preferred embodiment of the present application, an overflow port is arranged at the upper part of the side of the jacket away from the hot medium inlet, and the overflow port is in communication with the industrial water pool. The overflow port and the liquid outlet are both in communication with the industrial water pool, so that the reuse of water resources can be realized.

[0014] As a preferred embodiment of the present application, the temperature control mechanism comprises a temperature controller, a first temperature sensor, first, second and third electromagnetic valves connected with the temperature controller, the first, second and third electromagnetic valves are arranged at the hot medium inlet, the cold medium inlet and the liquid outlet respectively, and the first temperature sensor is arranged at the bottom of the glue storage tank and used for detecting the temperature of glue liquid in the glue storage tank.

[0015] As a preferred embodiment of the present application, the surface sizing device further comprises a glue output mechanism for outputting glue liquid in the glue storage tank.

[0016] As a preferred embodiment of the present application, the glue outlet mechanism comprises a first glue outlet pipe arranged in communication with the bottom of the glue storage tank and the glue outlet of the glue storage tank, and a glue pumping device connected with the first glue outlet pipe for glue outlet.

[0017] As a preferred embodiment of the present application, the glue outlet mechanism further comprises a glue liquid filter for filtering glue liquid, the glue liquid filter having a glue liquid inlet connected with the outlet of the glue pumping device through a second glue outlet pipe and a glue liquid outlet connected with a third glue outlet pipe. The glue outlet mechanism is connected with the glue outlet end of the first glue outlet pipe to ensure the purity of the glue liquid and avoid the influence of impurities on the quality of surface sizing.

[0018] As a preferred embodiment of the present application, the hot medium inlet is located directly above the cold medium inlet, and at least one protrusion is arranged on the inner wall of the jacket directly below the cold medium inlet and / or the outer wall of the glue storage tank.

[0019] As a preferred embodiment of the present application, the head of the protrusion is inclined upward and leaves a water passage between the outer wall of the glue storage tank or the inner wall of the jacket, and a liquid exchange turbulent flow area for realizing heat exchange between the hot medium and the cold medium is formed above the root of the protrusion.

[0020] As a preferred embodiment of the present application, a plurality of staggered protrusions are arranged on the inner wall of the jacket directly below the cold medium inlet and the outer wall of the glue storage tank, and the water passages above and below are connected with each other and arranged in a staggered manner to form a serpentine passage.

[0021] As a preferred embodiment of the present application, the protrusion is a plate-shaped structure inclined upward. The hot water and the cold water form a turbulent flow in the root area of the protrusion, and then quickly realize the rapid heat exchange between the hot water and the cold water through the serpentine passage, and quickly reach the preset temperature value.

[0022] As a preferred embodiment of the present application, the temperature control mechanism further comprises a second temperature sensor arranged on the jacket, and the second temperature sensor is arranged near the lowermost protrusion for detecting the temperature of the medium in the liquid exchange turbulent flow area.

[0023] As a preferred embodiment of the present application, the surface sizing device further comprises an automatic glue adding device.

[0024] As a preferred embodiment of the present application, the automatic glue adding device comprises a feeding pipe connected with the glue injection port and a control valve arranged on the feeding pipe for controlling the amount of feeding. The automatic feeding is completed by adjusting the control valve.

[0025] As a preferred embodiment of the present application, the stirring device comprises a stirring paddle arranged in the glue storage tank and a stirring motor for driving the stirring paddle to rotate, for uniformly stirring the glue liquid, controlling the temperature consistency of the glue liquid in the glue storage tank, and avoiding the generation of "skin" phenomenon on the inner wall of the part of the glue storage tank bearing the glue liquid.

[0026] The surface sizing device of the application works as follows: a preset temperature value to be maintained is set in the temperature controller, usually 30-60 DEG C, the first electromagnetic valve and the second electromagnetic valve are opened, the hot medium (hot water in the application is dryer condensate water) and the cold medium (cold water in the application is normal-temperature industrial water) enter the heat exchange cavity at a specific ratio or flow rate, since the hot medium inlet is located directly above the cold medium inlet, and the inner wall of the jacket located directly below the cold medium inlet is provided with a protrusion, the head of the protrusion close to the outer wall of the glue storage tank is inclined upward and leaves a water passage between the head and the outer wall of the glue storage tank, a liquid exchange turbulent flow area for realizing rapid heat exchange of the hot medium and the cold medium is formed above the protrusion, so that the medium in the heat exchange cavity reaches the preset temperature value quickly and then passes through the water passage between the protrusion and the glue storage tank until water overflows at the overflow port, and the whole heat exchange cavity is filled with water. The temperature of the glue liquid in the glue storage tank is detected by the first temperature sensor and transmitted to the temperature controller, under normal circumstances, when the temperature is higher than the preset value, the temperature controller controls the second electromagnetic valve to be opened, so that the cold water enters the jacket, and the cold and hot medium completes heat exchange in the liquid exchange turbulent flow area and then flows to the heat exchange cavity through the curved passage, so that the temperature of the glue liquid can be quickly reduced; when the temperature is lower than the preset value, the temperature controller controls the first electromagnetic valve to be opened, so that the hot water enters the water bath jacket, and the cold and hot medium completes heat exchange in the liquid exchange turbulent flow area and then flows to the heat exchange cavity through the curved passage, so that the temperature of the glue liquid is quickly increased, so as to efficiently adjust the temperature of the glue liquid and control the temperature of the glue liquid in a certain range, keep the relative stability of the viscosity of the glue liquid, and ensure the stability of the surface sizing quality of paper; in special circumstances, when the temperature of the glue liquid newly entering the glue storage tank is too high or too low, causing the temperature of the glue liquid in the glue storage tank to be significantly increased or decreased (such as ≥8 DEG C) and deviate from the preset temperature value, the third electromagnetic valve on the drain pipe can be opened first to drain part of the water, then the third electromagnetic valve is closed, then the first electromagnetic valve is opened to make the hot water enter the water bath jacket to quickly increase the temperature of the glue liquid, or the second electromagnetic valve is opened to make the cold water enter the water bath jacket to quickly decrease the temperature of the glue liquid, so as to quickly adjust the temperature of the glue liquid in the glue storage tank, and when it is required to be maintained at the preset temperature value, the opening degree of the first electromagnetic valve, the second electromagnetic valve and / or the third electromagnetic valve can be adjusted, the flow ratio of the cold and hot water is adjusted, so that the glue liquid in the glue storage tank can be maintained at the preset temperature, thereby stabilizing the viscosity of the glue liquid and ensuring the stability of the surface sizing quality of paper.

[0027] Compared with the prior art, the surface sizing device has the following advantages:

[0028] (1) The surface sizing device provided by the application can sense the temperature of the glue liquid through the first temperature sensor, feed back to the temperature controller, control the hot water and the cold water to flow into the heat exchange cavity, quickly adjust and control the temperature of the glue liquid in a certain range, keep the relative stability of the viscosity of the glue liquid, and ensure the stability of the surface sizing quality of paper.

[0029] (2) The inner wall of the jacket directly below the cold medium inlet and / or the outer wall of the glue storage tank is provided with a protrusion, the head of the protrusion is inclined upward and a water passage is left between the head of the protrusion and the outer wall of the glue storage tank or the inner wall of the jacket, a liquid exchange turbulent flow area for realizing heat exchange of the hot medium and the cold medium is formed above the root of the protrusion, and the cold and hot media can quickly realize heat exchange in the liquid exchange turbulent flow area after entering the heat exchange cavity, so that the heat exchange efficiency is improved;

[0030] (3) A plurality of staggered protrusions are arranged on the inner wall of the jacket and the outer wall of the glue storage tank, the water passages are communicated with each other in an up-down direction and are arranged in a staggered manner to form a serpentine passage, and the hot water and the cold water form turbulent flow in the root area of the protrusions and then quickly realize quick heat exchange of the hot water and the cold water through the serpentine passage, so that the preset temperature value is quickly reached, and the heat exchange efficiency is improved;

[0031] (4) The hot medium of the application is the dryer condensate water from a papermaking process, the temperature is 70-90 DEG C, no additional heating device is needed, energy is effectively saved, and the equipment cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0032] Fig. 1 It is a traditional paper surface sizing storage tank device.

[0033] Fig. 2 It is a schematic view of the automatic temperature control surface sizing device in an embodiment of the application.

[0034] Fig. 3 It is a schematic view of the automatic temperature control surface sizing device in another embodiment of the application.

[0035] In the drawings, 1 is a glue storage tank, 11 is an automatic glue adding device, 111 is a feeding pipe, 112 is a control valve, 2 is a stirring device, 21 is a stirring paddle, 22 is a stirring motor, 3 is a heat exchange mechanism, 31 is a jacket, 311 is a hot medium inlet, 312 is a cold medium inlet, 313 is a liquid outlet, 314 is an overflow port, 32 is a protrusion, 4 is a temperature control mechanism, 41 is a temperature controller, 42 is a first temperature sensor, 43 is a first electromagnetic valve, 44 is a second electromagnetic valve, 45 is a third electromagnetic valve, 46 is a second temperature sensor, 5 is a glue outlet mechanism, 51 is a first glue outlet pipe, 511 is a three-way valve, 52 is a glue pump, 53 is a glue liquid filter, 54 is a second glue outlet pipe, and 55 is a third glue outlet pipe. DETAILED DESCRIPTION

[0036] Following, the embodiments of the present application will be described in detail by specific examples, and other advantages and effects of the present application can be easily understood by those skilled in the art from the disclosure of this specification. The present application can also be implemented or applied by other different specific embodiments, and various modifications or changes can be made to the details in this specification based on different views and applications without departing from the spirit of the present application.

[0037] It should be noted that the process equipment or device not specifically mentioned in the following examples is the conventional equipment or device in the art.

[0038] In addition, it should be understood that the one or more method steps mentioned in the present application do not exclude that there can be other method steps before and after the combination steps or other method steps can be inserted between the explicitly mentioned steps, unless otherwise specified; it should also be understood that the combination connection relationship between the one or more devices / apparatuses mentioned in the present application does not exclude that there can be other devices / apparatuses before and after the combination devices / apparatuses or other devices / apparatuses can be inserted between the two explicitly mentioned devices / apparatuses, unless otherwise specified. Moreover, unless otherwise specified, the numbering of each method step is only a convenient tool to identify each method step, and is not intended to limit the arrangement order of each method step or to limit the scope of the present application, and the change or adjustment of the relative relationship without substantial change of the technical content is also considered as the scope of the present application.

[0039] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0040] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", "inner", "outer", "axial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The present application will be further described below with reference to specific embodiments, but the scope of protection of the present application is not limited thereto.

[0044] like Figs. 1-3 As shown, the automatic temperature-controlled surface adhesive application device of this utility model includes a glue storage tank 1 for storing adhesive liquid, the glue storage tank 1 is provided with a glue inlet and a glue outlet, and a stirring device 2 is provided inside the glue storage tank 1, and further includes:

[0045] A heat exchange mechanism 3, installed outside the adhesive storage tank 1, for exchanging heat with the adhesive liquid inside the tank 1; and

[0046] A temperature control mechanism 4 is connected to the heat exchange mechanism 3 to control the temperature of the adhesive liquid in the adhesive storage tank 1.

[0047] In some embodiments of this application, the heat exchange mechanism 3 includes a jacket 31, which is sleeved on the outside of the glue storage tank 1 and fixedly connected to the outer wall of the glue storage tank 1. A heat exchange cavity is formed between the inner wall of the jacket 31 and the outer wall of the glue storage tank 1. The jacket 31 is provided with a hot medium inlet 311, a cold medium inlet 312, and a drain outlet 313 that are connected to the heat exchange cavity. The hot medium inlet 311 is externally connected to the drying cylinder condensate pipeline system, the cold medium inlet 312 is externally connected to the water supply pipeline system, and the drain outlet 313 is connected to the industrial clean water tank.

[0048] In some embodiments of this application, the height of the area of ​​the glue storage tank 1 that is wrapped by the jacket 31 is 1 / 2 to 2 / 3 of the height of the glue storage tank 1.

[0049] In some embodiments of the present application, an upper portion of the jacket 31 on a side away from the hot medium inlet 311 is provided with an overflow port 314, which is in communication with an industrial clean water pool.

[0050] In some embodiments of the present application, the temperature control mechanism 4 comprises a temperature controller 41, and a first temperature sensor 42, a first electromagnetic valve 43, a second electromagnetic valve 44, and a third electromagnetic valve 45 connected to the temperature controller 41, wherein the first electromagnetic valve 43, the second electromagnetic valve 44, and the third electromagnetic valve 45 are respectively arranged at the hot medium inlet 311, the cold medium inlet 312, and the liquid outlet 313; and the first temperature sensor 42 is arranged at a bottom of the glue storage tank 1 and used for detecting a temperature of glue liquid in the glue storage tank 1.

[0051] In some embodiments of the present application, the surface sizing device further comprises a glue output mechanism 5 used for outputting glue liquid in the glue storage tank 1.

[0052] In some embodiments of the present application, the glue output mechanism 5 comprises a first glue output pipe 51 arranged at a bottom of the glue storage tank 1 and in communication with a glue outlet of the glue storage tank 1, and a glue pumping device 52 connected to the first glue output pipe 51 and used for outputting glue.

[0053] In some embodiments of the present application, the first glue output pipe 51 is in communication with the glue outlet of the glue storage tank 1 through a three-way valve 511.

[0054] In some embodiments of the present application, the glue output mechanism 5 further comprises a glue liquid filter 53 used for filtering glue liquid, wherein the glue liquid filter 53 has a glue liquid inlet and a glue liquid outlet, the glue liquid inlet is connected to an outlet of the glue pumping device 52 through a second glue output pipe 54, and the glue liquid outlet is connected to a third glue output pipe 55.

[0055] In some embodiments of the present application, the hot medium inlet 311 is located directly above the cold medium inlet 312, and a protrusion 32 is arranged on an inner wall of the jacket 31 and an outer wall of the glue storage tank 1 directly below the cold medium inlet 312.

[0056] In some embodiments of the present application, a head of the protrusion 32 is inclined upward and a water passing channel is left between the head of the protrusion 32 and the outer wall of the glue storage tank 1 or the inner wall of the jacket, and a liquid exchange turbulent flow area for heat exchange between hot medium and cold medium is formed above a root of the protrusion 32.

[0057] In some embodiments of the present application, a plurality of staggered protrusions 32 are arranged on the inner wall of the jacket 31 and the outer wall of the glue storage tank 1 directly below the cold medium inlet, the water passing channels are in communication with each other and are staggered to form a serpentine passage.

[0058] In some embodiments of the present application, the protrusions 32 are upwardly inclined plate-like structures. Hot water and cold water form a turbulent flow at the root region of the protrusions, and after passing through the serpentine passage, rapid heat exchange of the hot water and the cold water is achieved, and the preset temperature value is quickly reached.

[0059] In some embodiments of the present application, the temperature control mechanism 4 further comprises a second temperature sensor 46 arranged on the jacket, which is arranged near the lowermost protrusion, and is used to detect the temperature of the medium at the liquid exchange turbulent flow region.

[0060] In some embodiments of the present application, the surface sizing device is further provided with an automatic glue adding device 11.

[0061] In some embodiments of the present application, the automatic glue adding device 11 comprises a feeding pipe 111 connected to a glue injection port, and a control valve 112 arranged on the feeding pipe 111 and used to control the amount of glue. The automatic feeding is completed by adjusting the control valve 112.

[0062] In some embodiments of the present application, the stirring device 2 comprises a stirring paddle 21 arranged in the glue storage tank and a stirring motor 22 arranged to drive the stirring paddle to rotate, which is used to stir the glue liquid uniformly, control the temperature consistency of the glue liquid in the glue storage tank, and avoid the generation of "skin" phenomenon on the inner wall of the glue liquid bearing part of the storage tank.

[0063] The above embodiments are intended to illustrate the embodiments disclosed in the present application, and should not be understood as limiting the present application. In addition, various modifications listed herein and changes in the method and composition of the present application are obvious to those skilled in the art without departing from the scope and spirit of the present application. Although the present application has been specifically described in conjunction with various preferred embodiments of the present application, it should be understood that the present application should not be limited to these specific embodiments. In fact, various modifications as described above to obtain the present application are obvious to those skilled in the art and should be included in the scope of the present application.

Claims

1. An automatic temperature-controlled surface adhesive application device, comprising a glue storage tank (1) for storing adhesive liquid, wherein the glue storage tank (1) is provided with a glue inlet and a glue outlet, and a stirring device (2) is provided inside the glue storage tank (1), characterized in that, Also includes: A heat exchange mechanism (3) is installed outside the glue storage tank (1) for exchanging heat with the glue liquid inside the glue storage tank (1); and A temperature control mechanism (4) is connected to the heat exchange mechanism (3) to control the temperature of the adhesive liquid in the adhesive storage tank (1).

2. The automatic temperature-controlled surface coating device according to claim 1, characterized in that: The heat exchange mechanism (3) includes a jacket (31), which is sleeved on the outside of the glue storage tank (1) and fixedly connected to the glue storage tank (1). A heat exchange cavity is formed between the inner wall of the jacket (31) and the outer wall of the glue storage tank (1). The jacket (31) is provided with a hot medium inlet (311), a cold medium inlet (312), and a drain outlet (313) that are connected to the heat exchange cavity. The hot medium inlet (311) is connected to the drying cylinder condensate pipeline system, the cold medium inlet (312) is connected to the water supply pipeline system, and the drain outlet (313) is connected to the industrial clear water tank.

3. The automatic temperature-controlled surface coating device according to claim 2, characterized in that: The height of the area of ​​the glue storage tank (1) enclosed by the jacket (31) is 1 / 2 to 2 / 3 of the height of the glue storage tank (1).

4. The automatic temperature-controlled surface coating device according to claim 2, characterized in that: An overflow port (314) is provided on the upper part of the jacket (31) on the side away from the heat medium inlet (311), and the overflow port (314) is connected to the industrial clear water tank.

5. The automatic temperature-controlled surface coating device according to claim 2, characterized in that: The temperature control mechanism (4) includes a temperature controller (41) and a first temperature sensor (42), a first solenoid valve (43), a second solenoid valve (44), and a third solenoid valve (45) connected to the temperature controller (41). The first solenoid valve (43), the second solenoid valve (44), and the third solenoid valve (45) are respectively located at the hot medium inlet (311), the cold medium inlet (312), and the drain outlet (313). The first temperature sensor (42) is located at the bottom of the glue storage tank (1) and is used to detect the temperature of the glue liquid in the glue storage tank (1).

6. The automatic temperature-controlled surface coating device according to claim 1, characterized in that: It also includes a dispensing mechanism (5) for dispensing adhesive liquid from the storage tank (1).

7. The automatic temperature-controlled surface coating device according to claim 6, characterized in that: The dispensing mechanism (5) includes a first dispensing pipe (51) disposed at the bottom of the glue storage tank (1) and connected to the glue outlet of the glue storage tank (1), and a glue pump (52) connected to the first dispensing pipe (51) for dispensing glue.

8. The automatic temperature-controlled surface coating device according to claim 7, characterized in that: The dispensing mechanism (5) further includes a glue filter (53) for filtering glue liquid. The glue filter (53) has a glue inlet and a glue outlet. The glue inlet is connected to the outlet of the glue pump (52) through a second dispensing pipe (54), and the glue outlet is connected to a third dispensing pipe (55).

9. The automatic temperature-controlled surface coating device according to claim 2, characterized in that: The hot medium inlet (311) is located directly above the cold medium inlet (312), and at least one protrusion (32) is provided on the inner wall of the jacket (31) and / or the outer wall of the glue storage tank (1) located directly below the cold medium inlet (312).

10. The automatic temperature-controlled surface coating device according to claim 9, characterized in that: The head of the protrusion (32) near the outer wall of the glue storage tank (1) is inclined upward and a water passage is left between it and the outer wall of the glue storage tank (1). A liquid exchange turbulence zone is formed above the root of the protrusion (32) to realize the heat exchange between the hot medium and the cold medium.

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