A hose heat exchanger and heat exchange system for high viscosity media

Abstract

The present invention discloses a hose heat exchanger and heat exchange system for high-viscosity media, the heat exchanger comprises an inner tube and an outer tube, the inner tube and the outer tube are concentrically arranged and form a double-layer tube structure with an annular cavity, the inner tube and the outer tube are both hoses and the two ends of the inner tube extend out of the corresponding ends of the outer tube respectively, the inner tube is used for the circulation of high-viscosity media and the two ends of the inner tube are respectively a liquid inlet and a liquid outlet, the annular cavity is used for the circulation of heat exchange media, the outer tube is fixed to the inner tube by fastening mechanisms respectively arranged at the two ends of the outer tube so that the two ends of the annular cavity are closed, the two fastening mechanisms are respectively provided with a water inlet and a water outlet, the water inlet and the water outlet are respectively connected to the annular cavity, so that the heat exchange medium enters the annular cavity to exchange heat with the high-viscosity medium in the inner tube. The heat exchange system using the hose heat exchanger can effectively control the temperature of the high-viscosity medium and improve the spraying quality of the robot.

Description

Technical Field

[0001] The invention relates to a heat exchanger for conveying fluid, in particular to a hose heat exchanger and a heat exchange system for high-viscosity media. Background Art

[0002] Heating hoses are often used for heating and heat preservation during the transportation of high-viscosity media (such as glue, wax, oil, natural gas and asphalt) in industries such as automobiles, energy and chemicals. Among them, electric heating hoses are the most widely used hose heat exchangers because of their convenient energy access and control.

[0003] In the extrusion coating application of high-viscosity media, robots are currently mainly used for automatic operation. The high-viscosity media are transported to the spray gun through a delivery pump and a delivery pipe for operation. In order to meet the gluing trajectory, the delivery pipeline is usually fixedly installed on each axis of the robot arm, so the existing delivery pipeline uses a hose and requires full temperature control. Especially for media with a large impact of temperature on viscosity, it is required that the temperature of the medium in the pipe changes little in the radial and axial directions during the transportation process, and constant temperature control can be achieved at different ambient temperatures to meet the extrusion coating process requirements.

[0004] Chinese patents CN104246345A and CN208546626U both proposed technical solutions for electric heating hoses. Combined with other existing solutions, the main drawbacks are:

[0005] 1. The temperature distribution of the existing electric heating hose for controlling high-viscosity media is uneven and large temperature overshoots are prone to occur during the control process. The existing electric heating hose is mainly composed of an inner layer, an electric heating wire, an insulating layer, a protective layer, a temperature sensor and a joint. The inner layer of the electric heating hose is generally made of nylon, polytetrafluoroethylene or other plastics. Its inner surface is in contact with the heated medium, and its outer surface is in contact with the electric heating wire. The electric heating wire is usually wound in a spiral manner, and the distance between two adjacent turns of the electric heating wire is large. Therefore, the axial temperature variation of the outer surface of the inner layer of the electric heating hose is large. At the same time, since the temperature measuring point of the built-in temperature sensor of the electric heating tube is directly in contact with the electric heating wire, the actual temperature of the medium in the tube is usually greater than 5°C, especially during the heating process. The temperature difference is greater, and it is easy to have a large temperature overshoot during the heating process, causing the medium to deteriorate.

[0006] 2. When the ambient temperature is too high, the physical properties of high-viscosity media change greatly, and the glue type at the outlet of the robot glue gun is often unstable, which can easily cause unqualified glue coating quality, resulting in waste, pollution and high manual point replenishment rate. At this time, it is often necessary to cool the high-viscosity media. However, the existing high-viscosity medium electric heating hose does not have a cooling function. In addition, due to the limited space of the work station, the robot often needs to drag the conveying pipeline to move when performing glue coating operations. If conventional metal tube-in-tube heat exchange equipment is used, it cannot be installed on the robot arm due to its length and structure, so it cannot be used in glue coating processes that require full heating.

[0007] Therefore, in the extrusion coating application of high-viscosity media, there is an urgent need to provide a hose heat exchanger that can adapt to the movement of each axis of the robot, can achieve constant temperature control of the medium in the tube at different ambient temperatures, and has small temperature changes in the radial and axial directions. Summary of the invention

[0008] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a hose heat exchanger and heat exchange system for high-viscosity media that can move with the robot, does not affect the robot's operation, and can effectively control the use temperature of the high-viscosity medium.

[0009] A hose heat exchanger for high-viscosity media comprises an inner tube and an outer tube, which are concentrically arranged and form a double-layer tube structure with an annular cavity. Both the inner tube and the outer tube are hoses and the two ends of the inner tube extend out of the corresponding ends of the outer tube respectively. The inner tube is used for the circulation of high-viscosity media and the two ends of the inner tube are respectively a liquid inlet and a liquid outlet. The annular cavity is used for the circulation of heat exchange media. The outer tube is fixed to the inner tube by fastening mechanisms respectively arranged at the two ends of the outer tube so that the two ends of the annular cavity are closed. The two fastening mechanisms are respectively provided with a water inlet and a water outlet, and the water inlet and the water outlet are respectively connected to the annular cavity, so that the heat exchange medium enters the annular cavity for heat exchange with the high-viscosity medium in the inner tube.

[0010] Furthermore, the fastening mechanism includes a joint body, a locking sleeve, a first clamping nut, a second clamping nut, a sealing assembly and a joint nut; the joint body is sleeved on the inner tube, and the water inlet and water outlet are respectively arranged on the corresponding joint body and connected to the annular cavity, with the water inlet or water outlet as the boundary, and the end of the joint body corresponding to the outer tube is the connecting end, and the other end is the sealing end.

[0011] An annular outer tube mounting groove recessed inwardly is provided on the end surface of the joint body where the connecting end is located, and the outer tube is embedded in the outer tube mounting groove, and the outer end of the inner ring groove wall of the outer tube mounting groove is a toothed structure, and the tooth shape is at a certain angle and faces the sealing end, and the diameter of the inner end circumferential surface gradually increases so that the inner end of the outer tube mounting groove gradually decreases; the outer ring groove wall of the outer tube mounting groove is shorter than the inner ring groove wall of the outer tube mounting groove, and an external thread is provided on the corresponding outer circumference of the joint body, and the joint nut is arranged on the joint body where the connecting end is located and is screwed and fixedly connected to the joint body; the locking sleeve is arranged between the joint nut and the outer tube, and the locking sleeve is provided with a wedge-shaped structure corresponding to the inner end of the outer tube mounting groove toward the sealing end; the first clamping nut is provided with a thread on the outer circumference and is arranged on the connecting end surface of the joint body, and is located between the joint nut and the outer tube, and the first clamping nut is screwed and fixed with the joint nut, thereby pressing the locking sleeve in the outer tube mounting groove, and then wedging one end of the outer tube in the outer tube mounting groove.

[0012] The sealing assembly is arranged between the joint body and the inner tube where the sealing end is located, and a sealing groove is provided on the joint body for placing the sealing assembly; the second clamping nut is arranged on the sealing end surface of the joint body and is located between the joint body and the inner tube, the second clamping nut is cylindrical and has an external thread, and has an annular protrusion corresponding to the sealing groove at one end facing the sealing groove, a groove corresponding to the second clamping nut is provided on the end surface of the joint body, and a thread matching the external thread of the second clamping nut is provided on the groove, and the second clamping nut and the joint body are screwed together and fixedly connected, and the protrusion presses the sealing assembly in the sealing groove, thereby playing a sealing role.

[0013] Furthermore, the sealing assembly is composed of a plurality of sealing pads and a plurality of O-rings arranged alternately.

[0014] Furthermore, the outer end surfaces of the first clamping nut and the second clamping nut are provided with a plurality of grooves, so as to facilitate the disassembly and assembly of the first clamping nut and the second clamping nut by using a special tool.

[0015] A heat exchange system for high-viscosity media comprises a delivery pump, a delivery hose and a spray gun, wherein one end of the delivery hose is connected to the outlet end of the delivery pump, and the other end is connected to the inlet end of the spray gun, and comprises the aforementioned hose heat exchanger, temperature sensor and controller, wherein the hose heat exchanger is arranged on the delivery hose, thereby dividing the delivery hose into two sections, a first delivery hose and a second delivery hose, wherein one end of the first delivery hose is connected to the outlet end of the delivery pump, and the other end is connected to the liquid inlet of the hose heat exchanger; one end of the second delivery hose is connected to the liquid outlet of the hose heat exchanger, and the other end is connected to the inlet end of the spray gun; the water inlet and the water outlet of the hose heat exchanger are respectively connected to the outlet and the inlet of a thermostatic water tank, so that the heat exchange medium enters the hose heat exchanger for heat exchange with the high-viscosity medium; the temperature sensor is arranged on the spray gun for detecting the temperature of the high-viscosity medium at the outlet of the spray gun, and the temperature sensor and the thermostatic water tank are respectively connected to the controller, so that the controller compares the real-time temperature detected by the temperature sensor with the set temperature to adjust the temperature of the thermostatic water tank, thereby adjusting the temperature of the heat exchange medium in the thermostatic water tank.

[0016] Furthermore, the water outlet and liquid inlet of the hose heat exchanger are located at the same end of the outer tube, and the water inlet and liquid outlet of the hose heat exchanger are located at the other end of the outer tube, so that the heat exchange medium enters the hose heat exchanger and performs countercurrent heat exchange with the high-viscosity medium.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The hose heat exchanger of the present invention has a simple structure and is easy to install. It uses automatically controllable constant temperature water for temperature control. The temperature of the medium in the heat exchanger varies slightly in the radial and axial directions, thus avoiding the problems of local overheating and possible excessive temperature overshoot in existing electric heating.

[0019] 2. The hose heat exchanger of the present invention can not only effectively heat the high-viscosity medium, but also effectively cool the high-viscosity medium. When the ambient temperature is higher than the operating temperature, the temperature of the high-viscosity medium in the heat exchanger can be effectively controlled. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the hose heat exchanger of the present invention.

[0021] Figure 2 yes Figure 1 Enlarged view of part A.

[0022] Figure 3 It is a structural diagram of the heat exchange system.

[0023] Among them: 1-inner tube; 2-outer tube; 3-connector body; 4-connector nut; 5-locking sleeve; 6-first clamping nut; 7-O-ring; 8-sealing gasket; 9-second clamping nut; 10-water inlet; 11-water outlet; 01-delivery pump; 02-hose heat exchanger; 03-spray gun; 04-constant temperature water tank; 05-controller. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] See also Figure 1 and Figure 2 A hose heat exchanger for high-viscosity media comprises an inner tube 1 and an outer tube 2, which are concentrically arranged and form a double-layer tube structure with an annular cavity. Both the inner tube 1 and the outer tube 2 are hoses and the two ends of the inner tube 1 extend out of the corresponding ends of the outer tube 2 respectively. The inner tube 1 is used for the circulation of high-viscosity media and the two ends of the inner tube are respectively a liquid inlet and a liquid outlet. The annular cavity is used for the circulation of heat exchange media. The outer tube 2 is fixed to the inner tube 1 by fastening mechanisms respectively arranged at the two ends of the outer tube 2 so that the two ends of the annular cavity are closed. The two fastening mechanisms are respectively provided with a water inlet 10 and a water outlet 11, and the water inlet 10 and the water outlet 11 are respectively communicated with the annular cavity, so that the heat exchange medium enters the annular cavity for heat exchange with the high-viscosity medium in the inner tube 1.

[0026] Here, the hose heat exchanger is composed of an inner hose (inner tube) and an outer hose (outer tube). The inner tube is used for the circulation of high-viscosity media, and the annular cavity between the outer tube and the inner tube is used for the circulation of heat exchange media. Because both the inner tube and the outer tube are hoses, it is impossible to set a water inlet and a water outlet on the outer tube for connection with the heat exchange medium delivery pipeline. Therefore, the water inlet and the water outlet are set on the fastening mechanism to ensure that the water inlet and the water outlet are connected to the annular cavity so that the heat exchange medium can circulate in the annular cavity, thereby ensuring that the high-viscosity medium and the heat exchange medium can fully exchange heat.

[0027] The hose heat exchanger is light in weight and can be installed on the robot arm during use. At the same time, because it uses a hose, after being installed on the robot arm, it can move with the robot without affecting the normal operation of the robot. At the same time, installing the hose heat exchanger on the robot arm greatly saves space in the limited working space.

[0028] In specific implementation, the fastening mechanism includes a joint body 3, a locking sleeve 5, a first clamping nut 6, a second clamping nut 9, a sealing assembly and a joint nut 4; the joint body 3 is sleeved on the inner tube 1, and the water inlet 10 and the water outlet 11 are respectively arranged on the corresponding joint body 3 and connected to the annular cavity, with the water inlet 10 or the water outlet 11 as the boundary, and the end of the joint body 3 corresponding to the outer tube is the connecting end, and the other end is the sealing end.

[0029] An annular outer tube mounting groove recessed inward is provided on the end face of the joint body 3 where the connection end is located, and the outer tube 2 is embedded in the outer tube mounting groove, and the outer end of the inner groove wall of the outer tube mounting groove is a toothed structure, and the tooth shape is at a certain angle and faces the sealing end, and the diameter of the inner end circumferential surface gradually increases so that the inner end of the outer tube mounting groove gradually decreases; the outer groove wall of the outer tube mounting groove is shorter than the inner groove wall of the outer tube mounting groove, and an external thread is provided on the corresponding outer circumference of the joint body 3, and the joint nut 4 is arranged on the joint body 3 where the connection end is located and is screwed and fixedly connected with the joint body 3; the locking sleeve 5 is arranged between the joint nut 4 and the outer tube 2, and the locking sleeve 5 is provided with a wedge-shaped structure corresponding to the inner end of the outer tube mounting groove toward the sealing end; the first clamping nut 6 is provided with a thread on the outer circumference and is arranged on the connection end face of the joint body 3, and is located between the joint nut 4 and the outer tube 2, and the first clamping nut 6 is screwed and fixed with the joint nut 4, so that the locking sleeve 5 is pressed in the outer tube mounting groove, and then one end of the outer tube 2 is wedged in the outer tube mounting groove.

[0030] In this way, after the outer tube is inserted into the outer tube mounting groove, when the first clamping nut is tightened, the joint nut not only guides the locking sleeve, but also there is a gap between the joint nut and the joint body, so that when the first clamping nut is tightened, the joint nut also exerts a certain clamping force on the locking sleeve; when the first clamping nut is tightened, the locking sleeve is pressed into the outer tube mounting groove, and at the same time, the wedge-shaped structure of the locking sleeve can effectively wedge the outer tube into the outer tube mounting groove, and at the same time, the outer end of the circumferential surface where the outer tube mounting groove is located is a serrated structure, and the serrations face the sealing end, the serrated structure increases the friction between the outer tube and the joint body, avoids the possibility of the outer tube slipping out, and has a good sealing effect, ensuring that the heat exchange medium will not leak from the connection between the outer tube and the outer tube mounting groove of the joint body.

[0031] The sealing assembly is arranged between the joint body 3 where the sealing end is located and the inner tube 1, and a sealing groove is provided on the joint body 3 for placing the sealing assembly; the second clamping nut 9 is arranged on the sealing end surface of the joint body 3 and is located between the joint body 3 and the inner tube 1, the second clamping nut 9 is cylindrical and has an external thread, and has an annular protrusion corresponding to the sealing groove at one end facing the sealing groove, a groove corresponding to the second clamping nut 9 is provided on the end surface of the joint body 3, and a thread matching the external thread of the second clamping nut 9 is provided on the groove, and the second clamping nut 9 and the joint body 3 are screwed together and fixedly connected, and the protrusion presses the sealing assembly in the sealing groove, thereby playing a sealing role.

[0032] In specific implementation, the sealing assembly is composed of a plurality of sealing pads 8 and a plurality of O-rings 7 that are alternately arranged.

[0033] Here, the sealing assembly is composed of multiple gaskets and O-rings. When one of the O-rings is damaged, the other O-rings can still play a sealing role to prevent the leakage of the heat exchange medium. At the same time, when a small amount of leakage is found, since the O-ring has a certain elasticity, the second compression nut can be tightened, so that the sealing assembly continues to be compressed and deformed, causing the O-ring to deform in the radial direction under pressure, thereby playing a sealing role.

[0034] In a specific implementation, the outer end surfaces of the first clamping nut 6 and the second clamping nut 9 are provided with a plurality of grooves, so as to facilitate the disassembly and assembly of the first clamping nut 6 and the second clamping nut 9 by using special tools.

[0035] When assembling the hose heat exchanger, first put the first compression nut, locking sleeve, joint nut and joint body on one end of the inner tube in sequence, and make the inner tube extend out of the joint body by a certain length; then install the O-ring and gasket on the inner tube and the joint body, and then install the second compression nut, and then tighten the second compression nut to compress the O-ring and gasket in the sealing groove; then insert the outer tube into the outer tube installation groove, tighten the joint nut, assemble the locking sleeve, and finally tighten the first compression nut to complete the assembly of the fastening mechanism at one end of the inner tube. Repeat the above steps to complete the assembly of the fastening mechanism at the other end of the inner tube, and thus complete the assembly of the hose heat exchanger.

[0036] See also Figure 3 A heat exchange system for high-viscosity media includes a delivery pump 01, a delivery hose and a spray gun 03. One end of the delivery hose is connected to the outlet of the delivery pump 01, and the other end is connected to the inlet of the spray gun 03. It includes the aforementioned hose heat exchanger 02, a temperature sensor (not shown in the figure) and a controller 05. The hose heat exchanger 02 is arranged on the delivery hose, so that the delivery hose is divided into a first delivery hose and a second delivery hose. One end of the first delivery hose is connected to the outlet of the delivery pump 01, and the other end is connected to the liquid inlet of the hose heat exchanger 02; one end of the second delivery hose is connected to the outlet of the hose heat exchanger 02 The hose heat exchanger 02 is connected with the liquid port, and the other end is connected with the inlet end of the spray gun 03; the water inlet and outlet of the hose heat exchanger 02 are respectively connected with the outlet and inlet of the constant temperature water tank 04, so as to facilitate the heat exchange medium to enter the hose heat exchanger 02 and exchange heat with the high viscosity medium; the temperature sensor is arranged on the spray gun to detect the temperature of the high viscosity medium at the outlet of the spray gun, and the temperature sensor and the constant temperature water tank 04 are respectively connected with the controller 05, so as to facilitate the controller 05 to compare the real-time temperature detected by the temperature sensor with the set temperature to adjust the temperature of the constant temperature water tank 04, thereby adjusting the temperature of the heat exchange medium in the constant temperature water tank 04.

[0037] The hose heat exchanger is usually installed on the robot arm, so that the hose heat exchanger can move with the robot and will not affect the robot operation. In this embodiment, the temperature sensor and the constant temperature water tank are connected to the controller wirelessly.

[0038] Before the operation of the heat exchange system, the optimal operating temperature range of the high-temperature viscosity medium is pre-set in the controller. During the operation, when the temperature detected by the temperature sensor is higher than the set temperature, the high-viscosity medium needs to be cooled down, and the controller controls the constant temperature water tank to reduce the temperature of the constant temperature water tank, so that the temperature of the heat exchange medium entering the hose heat exchanger is reduced, and the low-temperature heat exchange medium and the high-temperature high-viscosity medium exchange heat in the hose heat exchanger, thereby reducing the temperature of the high-viscosity medium and ensuring that the temperature of the high-viscosity medium is within the optimal operating temperature range; when the temperature detected by the temperature sensor is lower than the set temperature, the high-viscosity medium needs to be heated up, and the controller controls the constant temperature water tank to increase the temperature of the constant temperature water tank, so that the temperature of the heat exchange medium entering the hose heat exchanger is increased, and the high-temperature heat exchange medium and the low-temperature high-viscosity medium exchange heat in the hose heat exchanger, thereby increasing the temperature of the high-viscosity medium and ensuring that the temperature of the high-viscosity medium is within the optimal operating temperature range. In this way, the automatic control of temperature is realized, which can effectively avoid the influence of too high or too low temperature on the spraying quality.

[0039] In specific implementation, the water outlet and liquid inlet of the hose heat exchanger 02 are located at the same end of the outer tube, and the water inlet and liquid outlet of the hose heat exchanger 02 are located at the other end of the outer tube, so that the heat exchange medium enters the hose heat exchanger 02 and performs countercurrent heat exchange with the high-viscosity medium.

[0040] In this way, the heat exchange between the heat exchange medium and the high-viscosity medium is made more efficient, which is beneficial to improving the heat exchange efficiency.

[0041] Finally, it should be noted that the above embodiments of the present invention are only examples for illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes and modifications can be made based on the above description. It is impossible to list all implementation methods here. Any obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A hose heat exchanger for high-viscosity media, comprising an inner tube and an outer tube, the inner tube and the outer tube are concentrically arranged to form a double-layer tube structure with an annular cavity, characterized in that: The inner tube and the outer tube are both hoses and the two ends of the inner tube extend out of the corresponding ends of the outer tube respectively. The inner tube is used for the circulation of high-viscosity media and the two ends of the inner tube are respectively a liquid inlet and a liquid outlet. The annular cavity is used for the circulation of heat exchange media. The outer tube is fixed to the inner tube by fastening mechanisms respectively arranged at the two ends of the outer tube so that the two ends of the annular cavity are closed. The two fastening mechanisms are respectively provided with a water inlet and a water outlet. The water inlet and the water outlet are respectively communicated with the annular cavity, so that the heat exchange medium enters the annular cavity to exchange heat with the high-viscosity medium in the inner tube; the water outlet and the liquid inlet are located at the same end of the outer tube, and the water inlet and the liquid outlet are located at the other end of the outer tube; The fastening mechanism comprises a joint body, a locking sleeve, a first compression nut, a second compression nut, a sealing assembly and a joint nut; the joint body is sleeved on the inner tube, the water inlet and the water outlet are respectively arranged on the corresponding joint body and communicated with the annular cavity, with the water inlet or the water outlet as the boundary, one end of the joint body corresponding to the outer tube is the connection end, and the other end is the sealing end; An annular outer tube mounting groove recessed inwardly is provided on the end surface of the joint body where the connecting end is located, the outer tube is embedded in the outer tube mounting groove, and the outer end of the inner ring groove wall of the outer tube mounting groove is a toothed structure, and the tooth shape is at a certain angle and faces the sealing end, and the diameter of the inner end circumferential surface gradually increases so that the inner end of the outer tube mounting groove gradually decreases; the outer ring groove wall of the outer tube mounting groove is shorter than the inner ring groove wall of the outer tube mounting groove, and an external thread is provided on the corresponding outer circumference of the joint body, the joint nut is arranged on the joint body where the connecting end is located and is screwed and fixedly connected to the joint body; the locking sleeve is arranged between the joint nut and the outer tube, and the locking sleeve is provided with a wedge-shaped structure corresponding to the inner end of the outer tube mounting groove toward the sealing end; the first clamping nut is provided with a thread on the outer circumference and is arranged on the connecting end surface of the joint body, and is located between the joint nut and the outer tube, the first clamping nut is screwed and fixed with the joint nut, so that the locking sleeve is pressed into the outer tube mounting groove, and then one end of the outer tube is wedged into the outer tube mounting groove; The sealing assembly is arranged between the joint body and the inner tube where the sealing end is located, and a sealing groove is provided on the joint body for placing the sealing assembly; the second clamping nut is arranged on the sealing end surface of the joint body and is located between the joint body and the inner tube, the second clamping nut is cylindrical and has an external thread, and has an annular protrusion corresponding to the sealing groove at one end facing the sealing groove, a groove corresponding to the second clamping nut is provided on the end surface of the joint body, and a thread matching the external thread of the second clamping nut is provided on the groove, and the second clamping nut and the joint body are screwed together and fixedly connected, and the protrusion presses the sealing assembly in the sealing groove, thereby playing a sealing role.

2. A hose heat exchanger for high viscosity media according to claim 1, characterized in that: The sealing assembly is composed of a plurality of sealing pads and a plurality of O-rings which are arranged alternately.

3. The hose heat exchanger for high viscosity media according to claim 1, characterized in that: The outer end surfaces of the first clamping nut and the second clamping nut are provided with a plurality of grooves, so as to facilitate the disassembly and assembly of the first clamping nut and the second clamping nut by using a special tool.

4. A heat exchange system for high viscosity media, comprising a delivery pump, a delivery hose and a spray gun, wherein one end of the delivery hose is connected to the outlet of the delivery pump, and the other end is connected to the inlet of the spray gun, characterized in that: It comprises the hose heat exchanger, temperature sensor and controller as described in any one of claims 1 to 3, wherein the hose heat exchanger is arranged on the delivery hose, thereby dividing the delivery hose into two sections, a first delivery hose and a second delivery hose, wherein one end of the first delivery hose is connected to the outlet end of the delivery pump, and the other end is connected to the liquid inlet of the hose heat exchanger; one end of the second delivery hose is connected to the liquid outlet of the hose heat exchanger, and the other end is connected to the inlet end of the spray gun; the water inlet and outlet of the hose heat exchanger are respectively connected to the outlet and inlet of the thermostatic water tank, so as to facilitate the heat exchange medium to enter the hose heat exchanger for heat exchange with the high-viscosity medium; the temperature sensor is arranged on the spray gun for detecting the temperature of the high-viscosity medium at the outlet of the spray gun, and the temperature sensor and the thermostatic water tank are respectively wirelessly connected to the controller, so as to facilitate the controller to compare the real-time temperature detected by the temperature sensor with the set temperature to adjust the temperature of the thermostatic water tank, thereby adjusting the temperature of the heat exchange medium in the thermostatic water tank.

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