A bottle preform melt transfer device with local cooling temperature control

Abstract

The application discloses a bottle piece molten body transfer device with local cooling temperature control, which comprises a liquid loading module, a temperature control module, a backing plate, a gas cylinder, a transmission module and a cooling module. The transmission module is placed on a platform, the liquid loading module is connected to one end of the transmission module away from the platform, the transmission module is located at the bottom of the liquid loading module, the backing plate is placed on the platform, the transmission module is connected to the backing plate, the transmission module is fixed on the backing plate, the gas cylinder is connected to one end of the backing plate close to the transmission module, the gas cylinder is fixed on the backing plate, one end of the gas cylinder away from the backing plate is connected to the temperature control module, the gas cylinder is fixed on the temperature control module, the temperature control module is slidably connected to the liquid loading module, the temperature control module is located at the top of the liquid loading module, the temperature control module is connected to the cooling module at one end close to the gas cylinder, the cooling module is fixed on the temperature control module, one end of the backing plate away from the gas cylinder is connected to the cooling module, the cooling module is fixed on the backing plate, and the temperature control module is connected to a computer.

Description

Technical Field

[0001] This invention relates to the field of transfer device technology, specifically to a bottle flake melt transfer device with localized cooling and temperature control. Background Technology

[0002] The product temperature after the bottle flakes are melted is still very high. High temperature will affect the molecular chain and product viscosity. Therefore, before entering the next process, the melted product needs to be cooled down. If the temperature is cooled down too quickly, it will affect the subsequent processes. The melt needs to be cooled down slowly to protect the viscosity of the melt.

[0003] In existing technologies, the transfer of molten bottle flakes largely relies on manual operation. However, the temperature of the molten material is high, making the transfer process dangerous and inconvenient. Summary of the Invention

[0004] The purpose of this invention is to provide a bottle flake melt transfer device with localized cooling and temperature control to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A bottle flake molten material transfer device with localized cooling and temperature control includes a filling module, a temperature control module, a pad, a cylinder, a transmission module, and a cooling module. The transmission module is placed on a platform, with its end away from the platform connected to the filling module. The transmission module is located at the bottom of the filling module. The pad is placed on the platform, and the transmission module is connected to and fixed to the pad. The cylinder is connected to the end of the pad near the transmission module and fixed to the pad. The end of the cylinder away from the pad is connected to the temperature control module and fixed to the temperature control module. The temperature control module is slidably connected to the filling module and is located at the top of the filling module. The cooling module is connected to the end of the temperature control module near the cylinder and fixed to the temperature control module. The end of the pad away from the cylinder is connected to the cooling module and fixed to the pad. The temperature control module and transmission module are connected to a computer. The cylinder can also be replaced with a hydraulic cylinder, etc.

[0007] Furthermore, the liquid filling module includes a first cup body, a second cup body, and a control module. The control module is disposed on the side of the first cup body, the second cup body is slidably connected to the first cup body, and the control module is slidably connected to the second cup body. The first cup body is used to hold the molten flakes, the second cup body is used to isolate the cooling device and the molten flakes, and the control module is used to separate the first cup body and the second cup body.

[0008] Furthermore, the first cup body includes a funnel, a first cup wall, and groove blocks. The funnel is fixedly connected to the bottom of the first cup wall, and two groove blocks are provided at the end of the first cup wall away from the funnel. The groove blocks are slidably connected to the second cup body, and the funnel is connected to the second cup body. A through hole is provided in the center of the funnel to facilitate the outflow of the molten material, and the groove blocks are used to control the sliding direction of the second cup body.

[0009] Furthermore, the second cup body includes a boss, guide posts, an inclined block, and a second cup wall. An inclined block is provided on the side of the second cup wall, and two guide posts are provided at the end of the second cup wall away from the inclined block. The boss is fixedly connected to the bottom of the second cup wall. The boss is connected to the funnel and fits against the funnel. The guide posts are slidably connected to the groove block. The inclined block is connected to the control module. A cylindrical plug is provided at the bottom of the boss. The connection surface between the boss and the funnel is adapted and fitted to improve the sealing performance. The guide posts and the groove block cooperate to restrict the movement direction of the second cup body. The guide posts and the groove block can be tilted at a certain angle to facilitate sliding.

[0010] Furthermore, the control module includes a handle, a pressure rod, a buckle, and a push block. The handle is fixedly connected to the first cup wall, and one end of the handle has a countersunk through hole. The pressure rod passes through the countersunk through hole of the handle and connects to the push block. The push block is fixed on the pressure rod, and the side of the push block away from the pressure rod is slidably connected to the inclined block. The end of the handle away from the push block has a deep hole, and one end of the buckle passes through the deep hole of the push block and connects to the pressure rod. The handle facilitates manual operation, the buckle is used for self-locking of the pressure rod, and the push block and the inclined block cooperate to separate the first cup body and the second cup body, controlling the flow of molten material.

[0011] Furthermore, the temperature control module includes a cup lid, a metal tube, a shell, a temperature controller, and a temperature sensor. The top of the cup lid is fixedly connected to the shell, and the shell is fixedly connected to the temperature controller. A fixing block is provided on the side of the cup lid to connect to a cylinder. The cup lid has several through holes, and the temperature sensor passes through the through holes of the cup lid to connect to the temperature controller. The shell has several through holes, and the metal tube connects to the cooling module. The metal tube passes through the through holes of the cup lid and the shell. The cup lid is connected to the first cup wall. The metal tube has a spiral structure, which can accelerate temperature transfer. The shell can protect the internal devices. The cylinder is connected to a solenoid valve. The temperature controller and the temperature sensor work together to control the opening and closing of the solenoid valve, separating the cup lid from the liquid loading module to facilitate the transfer of the molten material.

[0012] Furthermore, the transmission module includes a base, a stator, a mover, a first guide rail, a second guide rail, a tray, and a baffle. The base is placed on a platform, with a baffle fixedly connected to one end of the base and a pad fixedly connected to the base away from the baffle. The stator is placed on the base, and several second guide rails are placed at both ends of the base, with two second guide rails facing each other and slidably connected to the first guide rail. The mover is fixedly connected to the tray, and several first guide rails are placed at both ends of the bottom of the tray, with two first guide rails facing each other and slidably connected to the second guide rail. The end of the tray away from the mover is slidably connected to the first cup wall. By changing the electromagnetic field of the stator, the mover is moved, thereby driving the tray to move. The tray is used to fix the liquid-filling module and prevent it from tipping over and falling during transportation.

[0013] Furthermore, the cooling module includes a water tank, an inlet connector, an outlet connector, a liquid pump, an inlet pipe, and an outlet pipe. The liquid pump is placed at the bottom of the water tank, and two through holes are provided on the side of the water tank. The inlet connector and the outlet connector are fixedly connected to the through holes of the water tank, respectively. One end of the inlet pipe is fixedly connected to the inlet connector, and the end of the inlet pipe away from the inlet connector is fixedly connected to a metal pipe. One end of the outlet pipe is fixedly connected to the outlet connector, and the end of the outlet pipe away from the outlet connector is fixedly connected to a metal pipe. Coolant is filled in the water tank and transported to the metal pipe by the liquid pump to achieve local cooling of the molten material. The water tank can be equipped with heat sinks and a fan to accelerate the cooling of the coolant.

[0014] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention uses a spiral metal rod to introduce coolant for cooling, which has high cooling efficiency. The metal rod is placed in the second cup body to achieve local heat dissipation. A temperature sensor is used to check the temperature, and a solenoid valve is controlled by a temperature controller to realize the automatic lifting of the temperature control module, reducing manual operation. After the temperature control module and the liquid filling module are completely separated, they are transported by the transmission module. The computer controls the temperature control module and the transmission module to achieve automatic cooling and transportation. The liquid outlet of the liquid filling module is at the bottom, eliminating the need for manual pouring of liquid. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the flask flake melt transfer device of the present invention;

[0017] Figure 2 This is a top view of the bottle flake melt transfer device of the present invention;

[0018] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure at point A;

[0019] Figure 4 This is a schematic diagram of the liquid loading module structure of the present invention;

[0020] Figure 5 This is a top view of the liquid loading module of the present invention;

[0021] Figure 6 yes Figure 5 Schematic diagram of the cross-sectional structure at point B;

[0022] Figure 7 yes Figure 6 A magnified structural diagram at point C;

[0023] Figure 8 This is a schematic diagram of the cooling module structure of the present invention;

[0024] Figure 9 This is a schematic diagram of the transmission module structure of the present invention;

[0025] Figure 10 yes Figure 9 A magnified structural diagram at point D;

[0026] In the diagram: 1. Liquid filling module; 11. First cup body; 111. Funnel; 112. First cup wall; 113. Groove block; 12. Second cup body; 121. Boss; 122. Guide post; 123. Inclined block; 124. Second cup wall; 13. Control module; 131. Handle; 132. Pressure rod; 133. Snap fastener; 134. Push block; 2. Temperature control module; 21. Cup lid; 22. Metal tube 23. Housing; 24. Thermostat; 25. Temperature sensor; 3. Pad; 4. Cylinder; 5. Transmission module; 51. Base; 52. Stator; 53. Mover; 54. First guide rail; 55. Second guide rail; 56. Tray; 57. Baffle; 6. Cooling module; 61. Water tank; 62. Inlet connector; 63. Outlet connector; 64. Liquid pump; 65. Inlet pipe; 66. Outlet pipe. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] The present invention provides the following technical solution:

[0029] like Figure 1 , Figure 2 , Figure 3As shown, the molten flake transfer device includes a liquid filling module 1, a temperature control module 2, a pad 3, a cylinder 4, a transmission module 5, and a cooling module 6. The transmission module 5 is placed on a platform, with its end away from the platform connected to the liquid filling module 1. The transmission module 5 is located at the bottom of the liquid filling module 1. The pad 3 is placed on the platform, and the transmission module 5 is connected to the pad 3 and fixed to the pad 3. The end of the pad 3 near the transmission module 5 is connected to the cylinder 4, which is fixed to the pad 3. The end of the cylinder 4 away from the pad 3 is connected to the temperature control module 2 and fixed to the temperature control module 2. The temperature control module 2 is slidably connected to the liquid filling module 1 and is located at the top of the liquid filling module 1. The end of the temperature control module 2 near the cylinder 4 is connected to the cooling module 6, which is fixed to the temperature control module 2. The end of the pad 3 away from the cylinder 4 is connected to the cooling module 6, which is fixed to the pad 3. The temperature control module 2 and the transmission module 5 are connected to a computer.

[0030] The molten flakes are placed into the intermediate filling module 1, the cooling module 6 locally cools the molten flakes, the temperature control module 2 can detect the temperature of the molten flakes, the cylinder 4 controls the connection between the filling module 1 and the temperature control module 2, the transmission module 5 transfers the molten flakes to the next process, and the pad 3 is used to support and fix the cylinder 4 and the cooling module 6.

[0031] like Figure 4 , Figure 5 As shown, the liquid filling module 1 includes a first cup body 11, a second cup body 12, and a control module 13. The control module 13 is disposed on the side of the first cup body 11. The second cup body 12 is slidably connected to the first cup body 11 and is located at the center of the first cup body 11. The control module 13 is slidably connected to the second cup body 12.

[0032] The first cup 11 is used to hold the molten flakes, the second cup 12 can isolate the molten flakes from the temperature control module 2, the second cup 12 can also control the liquid discharge of the molten flakes, and the control module 13 is used to separate the first cup 11 and the second cup 12.

[0033] like Figure 6 As shown, the first cup body 11 includes a funnel 111, a first cup wall 112 and a groove block 113. The funnel 111 is fixedly connected to the bottom of the first cup wall 112. Two groove blocks 113 are provided at the end of the first cup wall 112 away from the funnel 111. The groove blocks 113 are slidably connected to the second cup body 12. The funnel 111 is connected to the second cup body 12.

[0034] The first cup wall 112 is welded to the funnel 111 to improve airtightness and prevent leakage. The funnel 111 can accelerate the outflow of the molten bottle flakes, and the groove block 113 can maintain the stability of the second cup body 12.

[0035] like Figure 6As shown, the second cup body 12 includes a boss 121, a guide post 122, an inclined block 123, and a second cup wall 124. An inclined block 123 is provided on the side of the second cup wall 124. Two guide posts 122 are provided at the end of the second cup wall 124 away from the inclined block 123. The boss 121 is fixedly connected to the bottom of the second cup wall 124. The boss 121 is connected to the funnel 111 and fits on the funnel 111. The guide post 122 is slidably connected to the groove block 113. The inclined block 123 is connected to the control module 13.

[0036] The boss 121 is welded to the bottom of the second cup wall 124. The guide post 122 and the inclined block 123 can be fixed to the side of the second cup wall 124 with screws. The boss 121 can fit tightly with the funnel 111. The guide post 122 and the groove block 113 can restrict the movement direction of the second cup body 12. The inclined block 123 facilitates the control module 13 to push the second cup body 12.

[0037] like Figure 6 , Figure 7 As shown, the control module 13 includes a handle 131, a pressure rod 132, a snap fastener 133, and a push block 134. The handle 131 is fixedly connected to the first cup wall 112. One end of the handle 131 has a countersunk through hole, through which a compression spring is placed. The pressure rod 132 passes through the compression spring and the countersunk through hole of the handle 131 and is connected to the push block 134. The end of the pressure rod 132 away from the push block 134 has a stop to prevent the compression spring from popping out. The push block 134 is fixed to the pressure rod 132. The side of the push block 134 away from the pressure rod 132 is slidably connected to the inclined block 123. The end of the handle 131 away from the push block 134 has a deep hole. One end of the snap fastener 133 passes through the deep hole of the push block 134 and is connected to the pressure rod 132. To prevent the snap fastener 133 from popping out, the snap fastener 133 is connected to the handle 131 using a tension spring.

[0038] For ease of installation, the push block 134 and the pressure rod 132 are connected by threads. The handle 131 is used to fix the pressure rod 132 and the buckle 133. The push block 134 controls the second cup body 12 to rise, and the buckle 133 restricts the movement of the pressure rod 132 to prevent the second cup body 12 from falling.

[0039] like Figure 8 As shown, the temperature control module 2 includes a cup lid 21, a metal tube 22, a housing 23, a thermostat 24, and a temperature sensor 25. The top of the cup lid 21 is fixedly connected to the housing 23, and the housing 23 is fixedly connected to the thermostat 24. A fixing block is provided on the side of the cup lid 21 to connect to the cylinder 4. The cup lid 21 has several through holes. The temperature sensor 25 passes through the through holes of the cup lid 21 to connect to the thermostat 24. The housing 23 has several through holes. The metal tube 22 is connected to the cooling module 6. The metal tube 22 passes through the through holes of the cup lid 21 and the through holes of the housing 23. The cup lid 21 is connected to the first cup wall 112.

[0040] The cup lid 21 is used to support the various components of this module. The outer shell 23 is welded to the cup lid 21. The outer shell 23 can protect the internal circuit. Copper is an excellent thermal conductor and can accelerate the transfer of temperature. Therefore, the metal tube 22 is made of copper. The thermostat 24 and the temperature sensor 25 control the cooling time to achieve automatic cooling.

[0041] like Figure 9 , Figure 10 As shown, the transmission module 5 includes a base 51, a stator 52, a mover 53, a first guide rail 54, a second guide rail 55, a tray 56, and a baffle 57. The base 51 is placed on a platform, and the baffle 57 is fixedly connected to one end of the base 51. The pad 3 is fixedly connected to the base 51 away from the baffle 57. The stator 52 is placed on the base 51. Several second guide rails 55 are placed at both ends of the base 51. Two second guide rails 55 are placed opposite each other. The second guide rails 55 are slidably connected to the first guide rail 54. The mover 53 is fixedly connected to the tray 56. Several first guide rails 54 are placed at both ends of the bottom of the tray 56. Two first guide rails 54 are placed opposite each other. The first guide rails 54 are slidably connected to the second guide rail 55. The end of the tray 56 away from the mover 53 is slidably connected to the first cup wall 112.

[0042] To facilitate installation and disassembly, all components of this module are fixedly connected with screws. The base 51 is used to fix the stator 52 and the second guide rail 55. The first guide rail 54 and the second guide rail 55 restrict the displacement direction of the tray 56. The baffle 57 prevents the tray 56 from sliding out of the second guide rail 55. Changing the electromagnetic field of the stator 52 controls the movement of the mover 53. The mover 53 drives the tray 56 to move, thereby completing the transfer of the bottle flake molten material.

[0043] like Figure 8 As shown, the cooling module 6 includes a water tank 61, an inlet connector 62, an outlet connector 63, a liquid pump 64, an inlet pipe 65, and an outlet pipe 66. The liquid pump 64 is placed at the bottom of the water tank 61. Two through holes are provided on the side of the water tank 61. The inlet connector 62 and the outlet connector 63 are fixedly connected to the through holes of the water tank 61, respectively. One end of the inlet pipe 65 is fixedly connected to the inlet connector 62, and the end of the inlet pipe 65 away from the inlet connector 62 is fixedly connected to a metal pipe 22. One end of the outlet pipe 66 is fixedly connected to the outlet connector 63, and the end of the outlet pipe 66 away from the outlet connector 63 is fixedly connected to the metal pipe 22.

[0044] The water tank 61 holds coolant. The inlet connector 62 and outlet connector 63 facilitate the connection of the inlet pipe 65 and the outlet pipe 66. The inlet pipe 65 and the outlet pipe 66 are used to transport coolant. The liquid pump 64 pushes the coolant into the outlet pipe 66. The outlet pipe 66 transports the coolant to the metal pipe 22. The other end of the metal pipe 22 outputs coolant, which is then transported to the water tank 61 through the inlet pipe 65 to achieve circulation.

[0045] The working principle of this invention is as follows: the liquid filling module places the molten bottle flakes, which are then cooled by the cooling module. When the required temperature is reached, the control cylinder separates the cooling module, and the transmission module transfers the molten bottle flakes to the next process.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for transferring molten bottle flakes with localized cooling and temperature control, characterized in that: The bottle flake melt transfer device includes a liquid loading module (1), a temperature control module (2), a pad (3), a cylinder (4), a transmission module (5), and a cooling module (6). The transmission module (5) is placed on a platform, and the end of the transmission module (5) away from the platform is connected to the liquid loading module (1). The transmission module (5) is located at the bottom of the liquid loading module (1). The pad (3) is placed on the platform, and the transmission module (5) is connected to the pad (3). The transmission module (5) is fixed on the pad (3). The end of the pad (3) near the transmission module (5) is connected to the cylinder (4). The cylinder (4) is fixed on the pad (6). 3) The cylinder (4) is connected to the temperature control module (2) at the end away from the pad (3). The cylinder (4) is fixed on the temperature control module (2). The temperature control module (2) is slidably connected to the liquid filling module (1). The temperature control module (2) is located on top of the liquid filling module (1). The end of the temperature control module (2) close to the cylinder (4) is connected to the cooling module (6). The cooling module (6) is fixed on the temperature control module (2). The end of the pad (3) away from the cylinder (4) is connected to the cooling module (6). The cooling module (6) is fixed on the pad (3). The temperature control module (2) is connected to the computer via the transmission module (5). The liquid filling module (1) includes a first cup body (11), a second cup body (12) and a control module (13). The control module (13) is disposed on the side of the first cup body (11), the second cup body (12) is slidably connected to the first cup body (11), and the control module (13) is slidably connected to the second cup body (12). The first cup body (11) includes a funnel (111) and a first cup wall (112). The funnel (111) is fixedly connected to the bottom of the first cup wall (112), and the funnel (111) is connected to the second cup body (12). The second cup body (12) includes a boss (121), a wedge (123), and a second cup wall (124). The wedge (123) is provided on the side of the second cup wall (124), and the boss (121) is fixedly connected to the bottom of the second cup wall (124). The boss (121) is connected to the funnel (111), and the boss (121) fits on the funnel (111). The wedge (123) is connected to the control module (13). The first cup (11) is used to hold the molten flakes, the second cup (12) can isolate the molten flakes from the temperature control module (2), the second cup (12) can also control the liquid discharge of the molten flakes, and the control module (13) is used to separate the first cup (11) and the second cup (12).

2. The bottle flake melt transfer device with localized cooling and temperature control according to claim 1, characterized in that: The first cup body (11) also includes a groove block (113). Two groove blocks (113) are provided at the end of the first cup wall (112) away from the funnel (111). The groove block (113) is slidably connected to the second cup body (12).

3. The device for transferring molten bottle flakes with localized cooling and temperature control according to claim 2, characterized in that: The second cup body (12) also includes guide posts (122). Two guide posts (122) are provided at the end of the second cup wall (124) away from the inclined block (123). The guide posts (122) are slidably connected to the groove block (113).

4. The device for transferring molten bottle flakes with localized cooling and temperature control according to claim 3, characterized in that: The control module (13) includes a handle (131), a pressure rod (132), a snap fastener (133), and a push block (134). The handle (131) is fixedly connected to the first cup wall (112). One end of the handle (131) has a countersunk through hole. The pressure rod (132) passes through the countersunk through hole of the handle (131) and is connected to the push block (134). The push block (134) is fixed on the pressure rod (132). The side of the push block (134) away from the pressure rod (132) is slidably connected to the inclined block (123). The end of the handle (131) away from the push block (134) has a deep hole. One end of the snap fastener (133) passes through the deep hole of the push block (134) and is connected to the pressure rod (132).

5. A device for transferring molten bottle flakes with localized cooling and temperature control according to claim 2, characterized in that: The temperature control module (2) includes a cup lid (21), a metal tube (22), a shell (23), a thermostat (24), and a temperature sensor (25). The top of the cup lid (21) is fixedly connected to the shell (23), and the shell (23) is fixedly connected to the thermostat (24). A fixing block is provided on the side of the cup lid (21) to connect to the cylinder (4). The cup lid (21) has several through holes. The temperature sensor (25) passes through the through holes of the cup lid (21) to connect to the thermostat (24). The shell (23) has several through holes. The metal tube (22) is connected to the cooling module (6). The metal tube (22) passes through the through holes of the cup lid (21) and the shell (23). The cup lid (21) is connected to the first cup wall (112).

6. The device for transferring molten bottle flakes with localized cooling and temperature control according to claim 1, characterized in that: The transmission module (5) includes a base (51), a stator (52), a mover (53), a first guide rail (54), a second guide rail (55), a tray (56), and a baffle (57). The base (51) is placed on a platform, and the baffle (57) is fixedly connected to one end of the base (51). A pad (3) is fixedly connected to the base (51) away from the baffle (57). The stator (52) is placed on the base (51), and several second guide rails are placed at both ends of the base (51). (55), two second guide rails (55) are placed opposite each other, the second guide rails (55) are slidably connected to the first guide rails (54), the mover (53) is fixedly connected to the tray (56), several first guide rails (54) are placed at both ends of the bottom of the tray (56), two first guide rails (54) are placed opposite each other, the first guide rails (54) are slidably connected to the second guide rails (55), and the end of the tray (56) away from the mover (53) is slidably connected to the first cup wall (112).

7. A device for transferring molten bottle flakes with localized cooling and temperature control according to claim 5, characterized in that: The cooling module (6) includes a water tank (61), an inlet connector (62), an outlet connector (63), a pump (64), an inlet pipe (65), and an outlet pipe (66). The pump (64) is placed at the bottom of the water tank (61). Two through holes are provided on the side of the water tank (61). The inlet connector (62) and the outlet connector (63) are fixedly connected to the through holes of the water tank (61) respectively. One end of the inlet pipe (65) is fixedly connected to the inlet connector (62), and the end of the inlet pipe (65) away from the inlet connector (62) is fixedly connected to a metal pipe (22). One end of the outlet pipe (66) is fixedly connected to the outlet connector (63), and the end of the outlet pipe (66) away from the outlet connector (63) is fixedly connected to a metal pipe (22).

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