Liquid stirring device

Abstract

The utility model discloses a liquid stirring device. The liquid stirring device comprises a box body, a barrel body and a stirring assembly, the barrel body is located in the box body and supported by the box body, and a stirring cavity used for storing polishing liquid is formed in the barrel body; the stirring assembly is located in the box body and supported by the barrel body, the stirring assembly comprises a first stirring part and a second stirring part which are located in the stirring cavity, the first stirring part is close to the bottom of the stirring cavity, the second stirring part is located above the first stirring part, and the first stirring part and the second stirring part both have rotational degrees of freedom; therefore, the first stirring piece and the second stirring piece rotate relative to the barrel body. Through the arrangement, the first stirring piece and the second stirring piece are distributed in the barrel body in the vertical direction, and the first stirring piece and the second stirring piece can enable the polishing solution to be stirred more uniformly, so that the stirring uniformity of the liquid stirring device is improved.

Description

Technical Field

[0001] The present application relates to the technical field of mixers, and in particular to a liquid stirring device. Background Art

[0002] At present, the liquid stirring device includes a barrel body and a stirring assembly. The barrel body is used to store the polishing liquid. The stirring assembly is at least partially located in the barrel body. The stirring assembly is used to stir the polishing liquid so that the concentration of the polishing liquid is more uniform, so that the polishing liquid can meet the process requirements.

[0003] In the prior art, the stirring assembly includes a stirring member, which is located in the middle of the barrel and stirs the polishing liquid. When the liquid level of the polishing liquid is lower than the height of the stirring member, the stirring member will not be able to fully stir the polishing liquid, resulting in poor stirring uniformity of the liquid stirring device. Utility Model Content

[0004] In order to solve the deficiencies of the prior art, the purpose of the present application is to provide a liquid stirring device with higher stirring uniformity.

[0005] To achieve the above objectives, this application adopts the following technical solutions:

[0006] A liquid stirring device is used to process polishing liquid. The liquid stirring device includes a box body, a barrel body and a stirring assembly. The barrel body is located in the box body, and a stirring chamber for storing polishing liquid is formed inside the barrel body; the stirring assembly is located in the box body, and the stirring assembly includes a first stirring member and a second stirring member located in the stirring chamber, the first stirring member is close to the bottom of the stirring chamber, and the second stirring member is located above the first stirring member. The first stirring member and the second stirring member both have rotational freedom so that the first stirring member and the second stirring member can rotate relative to the barrel body.

[0007] Furthermore, the stirring assembly also includes a driving member, which is located in the box body and can drive the first stirring member and the second stirring member to rotate.

[0008] Furthermore, the stirring assembly also includes a stirring shaft, which extends in a vertical direction and is located in the stirring chamber. The stirring shaft is connected to a driving member, which drives the stirring shaft to rotate. The first stirring member and the second stirring member are both connected to the stirring shaft.

[0009] Furthermore, the first stirring member includes a rotating support plate and a plurality of stirring blocks, the rotating support plate is connected to the lower end of the stirring shaft; the plurality of stirring blocks are distributed circumferentially around the stirring shaft and fixedly connected to the rotating support plate; the second stirring member has the same structure as the first stirring member.

[0010] Furthermore, the second stirring member includes a blade support tube and a stirring blade, the blade support tube is sleeved on the stirring shaft and connected to the stirring shaft; a plurality of stirring blades are distributed circumferentially around the stirring shaft and fixedly connected to the blade support tube; the first stirring member and the second stirring member have the same structure.

[0011] Furthermore, the liquid stirring device also includes a liquid inlet component, a liquid outlet component, and two measuring devices. The liquid inlet component is located in the box and is connected to the barrel body; the liquid outlet component is located in the box and is connected to the barrel body; the two measuring devices are both located in the box, one measuring device is connected to the liquid inlet component, and the other measuring device is connected to the liquid outlet component.

[0012] Furthermore, the liquid inlet component includes a liquid inlet pipe and a liquid inlet pump. The liquid inlet pipe is located in the box and is connected to the barrel body. The liquid inlet pump is located in the box and is integrated on the liquid inlet pipe and is connected to the liquid inlet pipe. The measuring device is located on the liquid inlet pipe between the liquid inlet pump and the barrel body.

[0013] Furthermore, the liquid outlet component includes a liquid outlet pipe and a liquid outlet pump. The liquid outlet pipe is located in the box body and is connected to the barrel body. The liquid outlet pump is located in the box body and supported by the box body. The liquid outlet pump is integrated on the liquid inlet pipe and is connected to the liquid inlet pipe. The measuring device is located on the liquid outlet pipe between the liquid outlet pump and the barrel body.

[0014] Furthermore, the liquid stirring device also includes a control system, which is at least partially located in the box, and the control system is electrically connected to the measuring device, the liquid inlet pump and the liquid outlet pump respectively.

[0015] Furthermore, the liquid stirring device also includes a heater and a temperature control system. The heater is located in the box and arranged around the barrel body, and the heater is arranged in close contact with the barrel body; the temperature control system is located in the box and electrically connected to the heater, and the temperature control system can adjust the temperature of the heater.

[0016] The above-mentioned liquid stirring device distributes the first stirring member and the second stirring member in the barrel along the vertical direction, and the first stirring member and the second stirring member can fully stir the polishing liquid, so that the polishing liquid is stirred more evenly, which is beneficial to improve the stirring uniformity of the liquid stirring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a liquid stirring device provided in an embodiment of the present application.

[0018] Figure 2 A partial schematic diagram of a liquid stirring device provided in an embodiment of the present application.

[0019] Figure 3 An exploded view of the barrel, stirring assembly and liquid outlet assembly provided in an embodiment of the present application.

[0020] Figure 4 This is a schematic structural diagram of the first stirring member provided in an embodiment of the present application.

[0021] Figure 5 Provided in the embodiments of this application Figure 3 A partial enlarged view of point A in the middle.

[0022] Figure 6 A partial schematic diagram of the liquid stirring device provided in an embodiment of the present application from another angle.

[0023] In the figure: 100, liquid stirring device; 11, box body; 12, mother liquid barrel; 13, stirring assembly; 131, first stirring member; 1311, rotating support plate; 1312, stirring block; 132, second stirring member; 1321, fan blade support tube; 1322, stirring fan blade; 133, driving member; 134, stirring shaft; 14, liquid inlet assembly; 141, liquid inlet pipe; 142, liquid inlet pump; 15, liquid outlet assembly; 151, liquid outlet pipe; 152, liquid outlet pump; 16, measuring device; 17, control system; 18, heater; 19, temperature control system; 101, storage chamber; 102, stirring chamber. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the specific implementation manner of the present application will be clearly and completely described below in conjunction with the drawings in the implementation manner of the present application.

[0025] like Figure 1 A liquid stirring device 100 is shown, which is used to process polishing liquid. Specifically, polishing liquid is a liquid preparation widely used in the industrial field, mainly used for polishing the surface of an object, wherein the polishing liquid is a liquid composed of multiple chemical components, and the polishing liquid will produce precipitation when it is left standing, so the polishing liquid needs to be stirred before use. The liquid stirring device 100 provided in the present application can stir the polishing liquid, thereby helping to improve the working performance of the polishing liquid. In order to clearly explain the technical solution of the application, it is also defined as follows Figure 1 In the present application, the length direction of the liquid stirring device 100 refers to the front-to-back direction, the width direction of the liquid stirring device 100 refers to the left-right direction, and the vertical direction refers to the up-down direction.

[0026] like Figure 2 and Figure 3As shown, as an implementation method, the liquid stirring device 100 includes a box body 11, a barrel body 12 and a stirring assembly 13. The box body 11 is used to protect internal components such as the barrel body 12 and the stirring assembly 13. The barrel body 12 is located in the box body 11, the barrel body 12 is connected to the box body 11 and supported by the box body 11, and a stirring chamber 102 for storing polishing liquid is formed inside the barrel body 12. The stirring assembly 13 is located in the box body 11, and the stirring assembly 13 can be arranged above the barrel body 12 and supported by the barrel body 12, and the stirring assembly 13 is used to stir the polishing liquid. Specifically, the stirring assembly 13 includes a first stirring member 131 and a second stirring member 132 located in the stirring chamber 102, the first stirring member 131 is close to the bottom of the stirring chamber 102, and the second stirring member 132 is located above the first stirring member 131, and the first stirring member 131 and the second stirring member 132 both have rotational freedom, so that the first stirring member 131 and the second stirring member 132 can rotate relative to the barrel body 12. More specifically, the first stirring member 131 and the second stirring member 132 are distributed in the barrel body 12 along the vertical direction, and the first stirring member 131 and the second stirring member 132 can be immersed in the polishing liquid. The first stirring member 131 and the second stirring member 132 are used to stir the polishing liquid, so that the overall concentration of the polishing liquid is uniform. When the liquid level of the polishing liquid in the barrel body 12 is lower than the second stirring member 132, the first stirring member 131 can also stir the polishing liquid alone to achieve uniform stirring of the polishing liquid. Through the above arrangement, the first stirring member 131 and the second stirring member 132 can make the stirring of the polishing liquid more uniform, which is conducive to improving the stirring uniformity of the liquid stirring device 100, so that the polishing liquid meets the use requirements, and the first stirring member 131 and the second stirring member 132 can increase the stirring speed of the polishing liquid, which is conducive to improving the stirring efficiency of the liquid stirring device 100. It should be noted that the size and number of the stirring members can be adjusted according to the capacity of the barrel body 12 to achieve uniform stirring of the polishing liquid.

[0027] In this embodiment, the stirring assembly 13 also includes a driving member 133, which is located in the box body 11. The driving member 133 can be arranged above the barrel body 12 and fixedly connected to the barrel body 12, and the driving member 133 can drive the first stirring member 131 and the second stirring member 132 to rotate. Specifically, the driving member 133 has a rotation function, and the driving member 133 can simultaneously drive the first stirring member 131 and the second stirring member 132 to rotate synchronously, so that the rotation speeds of the first stirring member 131 and the second stirring member 132 are basically the same. When the polishing liquid needs to be stirred, the driving member 133 controls the first stirring member 131 and the second stirring member 132 to rotate synchronously. When the polishing liquid is stirred, the driving member 133 can also control the first stirring member 131 and the second stirring member 132 to stop synchronously. Through the above arrangement, the concentration of the polishing liquid can be always kept in a constant range, which is conducive to improving the stirring quality of the polishing liquid, and then to improving the stirring efficiency of the liquid stirring device 100.

[0028] Exemplarily, the driving member 133 may be a driving motor, a pneumatic motor, a liquid motor or the like, so as to enable the first stirring member 131 and the second stirring member 132 to rotate stably.

[0029] It should be noted that the stirring assembly 13 further includes a stirring shaft 134, which extends in the vertical direction and is located in the stirring chamber 102, and the stirring shaft 134 is connected to the driving member 133, and the driving member 133 can drive the stirring shaft 134 to rotate, and the first stirring member 131 and the second stirring member 132 are both connected to the stirring shaft 134. Specifically, the length of the stirring shaft 134 in the vertical direction is substantially equal to the depth of the barrel body 12, the upper end of the stirring shaft 134 is fixedly connected to the driving member 133, and the lower end of the stirring shaft 134 is detachably connected to the first stirring member 131. More specifically, both the first stirring member 131 and the second stirring member 132 can be detachably connected to the stirring shaft 134. When the distance between the first stirring member 131 and the second stirring member 132 is too close, the positions of the first stirring member 131 and the second stirring member 132 on the stirring shaft 134 can be adjusted to make the layout of the first stirring member 131 and the second stirring member 132 more reasonable, thereby facilitating the first stirring member 131 and the second stirring member 132 to stir the polishing liquid. Through the above arrangement, the positions of the first stirring member 131 and the second stirring member 132 can be changed so that the first stirring member 131 and the second stirring member 132 can be reasonably arranged in the barrel body 12, which is beneficial to improve the assembly performance of the liquid stirring device 100. In addition, the first stirring member 131 and the second stirring member 132 can be selectively installed on the stirring shaft 134 so that the polishing liquid can be stirred evenly.

[0030] like Figure 4As shown, as an implementation method, the first stirring member 131 includes a rotating support plate 1311 and a plurality of stirring blocks 1312, the rotating support plate 1311 is connected to the lower end of the stirring shaft 134, and the plurality of stirring blocks 1312 are distributed around the circumference of the stirring shaft 134 and are fixedly connected to the rotating support plate 1311. Specifically, the rotating support plate 1311 has a high strength, and the thickness of the rotating support plate 1311 is relatively thin, and the plurality of stirring blocks 1312 are in a sheet structure, and the volume of the stirring blocks 1312 is relatively small, so as to facilitate the stirring of the polishing liquid. Through the above arrangement, while improving the structural stability of the first stirring member 131, the first stirring member 131 can also be lightweight. In addition, the first stirring member 131 occupies a smaller space of the barrel body 12, so as to facilitate the processing of more polishing liquid, which is also conducive to improving the space utilization of the barrel body 12, thereby improving the working efficiency of the liquid stirring device 100. It should be noted that in this embodiment, the second stirring member 132 and the first stirring member 131 have the same structure.

[0031] like Figure 5 As shown, as another implementation, the second stirring member 132 includes a blade support tube 1321 and a stirring blade 1322, the blade support tube 1321 is sleeved on the stirring shaft 134 and connected to the stirring shaft 134, and a plurality of stirring blades 1322 are provided, and the plurality of stirring blades 1322 are distributed around the circumference of the stirring shaft 134 and fixedly connected to the blade support tube 1321. Specifically, the blade support tube 1321 and the stirring shaft 134 are configured to be detachably connected, that is, the blade support tube 1321 can first slide on the stirring shaft 134, and then the blade support tube 1321 is fixed by a fastener, so that the stirring blade 1322 can be selectively arranged on the stirring shaft 134 along with the blade support tube 1321, and the stirring blade 1322 is used to stir the polishing liquid. Through the above arrangement, the position of the second stirring member 132 can be adjusted without disassembling the first stirring member 131, which is beneficial to improving the assembly speed of the second stirring member 132, and further beneficial to improving the assembly efficiency of the stirring assembly 13. It should be noted that in this embodiment, the first stirring member 131 and the second stirring member 132 have the same structure.

[0032] like Figure 4 and Figure 5 As shown, as another optional embodiment, the first stirring member 131 and the second stirring member 132 have different structures, that is, the first stirring member 131 includes a rotating support plate 1311 and a plurality of stirring blocks 1312, and the second stirring member 132 includes a blade support tube 1321 and stirring blades 1322. Or the first stirring member 131 includes a blade support tube 1321 and stirring blades 1322, and the second stirring member 132 includes a rotating support plate 1311 and a plurality of stirring blocks 1312.

[0033] like Figure 2 As shown, as an implementation, the liquid stirring device 100 further includes a liquid inlet assembly 14, a liquid outlet assembly 15 and two measuring devices 16. The liquid inlet assembly 14 is located in the box body 11 and supported by the box body 11, and the liquid inlet assembly 14 is communicated with the barrel body 12. The liquid outlet assembly 15 is located in the box body 11 and supported by the box body 11, and the liquid outlet assembly 15 is communicated with the barrel body 12; the two measuring devices 16 are both located in the box body 11, one measuring device 16 is connected to the liquid inlet assembly 14, and the other measuring device 16 is connected to the liquid outlet assembly 15. Specifically, the liquid inlet assembly 14 is used to input the polishing liquid to be processed into the barrel body 12, the liquid outlet assembly 15 is used to output the processed polishing liquid from the barrel body 12, and the measuring device 16 is used to detect the flow rate of the polishing liquid to accurately measure the volume of the polishing liquid in the barrel body 12. Through the above arrangement, it is possible to avoid the polishing liquid capacity in the barrel 12 being too low, which would cause the polishing liquid processing efficiency to slow down, thereby preventing the processing speed of the liquid stirring device 100 from slowing down, which is beneficial to improving the processing efficiency of the liquid stirring device 100.

[0034] like Figure 3 and Figure 6 As shown, in this embodiment, the liquid inlet component 14 includes a liquid inlet pipe 141 and a liquid inlet pump 142, the liquid inlet pipe 141 is located in the box body 11 and connected to the box body 11, the liquid inlet pipe 141 is communicated with the barrel body 12, the liquid inlet pump 142 is located in the box body 11 and supported by the box body 11, the liquid inlet pump 142 is integrated on the liquid inlet pipe 141 and communicated with the liquid inlet pipe 141, and the measuring device 16 is located on the liquid inlet pipe 141 between the liquid inlet pump 142 and the barrel body 12. Similarly, the liquid outlet assembly 15 includes a liquid outlet pipe 151 and a liquid outlet pump 152. The liquid outlet pipe 151 is located in the box body 11 and connected to the box body 11. The liquid outlet pipe 151 is communicated with the barrel body 12. The liquid outlet pump 152 is located in the box body 11 and supported by the box body 11. The liquid outlet pump 152 is integrated on the liquid inlet pipe 141 and communicated with the liquid inlet pipe 141. The measuring device 16 is located on the liquid outlet pipe 151 between the liquid outlet pump 152 and the barrel body 12. Specifically, the liquid inlet pipe 141 and the liquid outlet pipe 151 are used to transport the polishing liquid, the liquid inlet pump 142 and the liquid outlet pump 152 are used to drive the polishing liquid to flow, and the measuring device 16 can accurately measure the flow rate of the polishing liquid. When the polishing liquid in the barrel body 12 is insufficient, the liquid inlet pump 142 is turned on and transports the polishing liquid into the barrel body 12. The measuring device 16 on the liquid inlet pipe 141 can accurately calculate the volume of the polishing liquid injected into the barrel body 12. Furthermore, when the polishing liquid in the barrel body 12 is processed, the liquid outlet pump 152 is turned on and the polishing liquid in the barrel body 12 is output, and the measuring device 16 on the liquid outlet pipe 151 can accurately calculate the volume of the polishing liquid discharged from the barrel body 12. Through the above arrangement, the polishing liquid can flow in the liquid inlet assembly 14, the barrel body 12 and the liquid outlet assembly 15, which is conducive to improving the flow speed of the polishing liquid, and further conducive to improving the working efficiency of the liquid stirring device 100.

[0035] As an implementation method, the liquid stirring device 100 also includes a control system 17, and the control system 17 is at least partially located in the housing 11, and the control system 17 is electrically connected to the measuring device 16, the liquid inlet pump 142, and the liquid outlet pump 152. Specifically, the control system 17 is used to receive the feedback signal of the measuring device 16, and control the opening or closing of the liquid inlet pump 142 and the liquid outlet pump 152. Through the above-mentioned settings, the control system 17 can improve the control accuracy of the measuring device 16, the liquid inlet pump 142, and the liquid outlet pump 152, so as to improve the processing efficiency of the polishing liquid, thereby helping to improve the control accuracy of the liquid stirring device 100. It should be noted that the liquid inlet pump 142 and the liquid outlet pump can be provided with electric diaphragm pumps, water pumps and other devices.

[0036] As an implementation, the liquid stirring device 100 also includes a heater 18 and a temperature control system 19. The heater 18 is located in the box 11 and is arranged around the barrel 12. The heater 18 is arranged in a close relationship with the barrel 12. The temperature control system 19 is located in the box 11 and is electrically connected to the heater 18. The temperature control system 19 can adjust the temperature of the heater 18. Specifically, the heater 18 is used to heat the polishing liquid in the barrel 12. The polishing liquid can reduce the reaction time at high temperature to reduce the stirring time of the stirring component 13 for the polishing liquid. The temperature control system 19 can control the temperature of the heater 18 so that the polishing liquid obtains the required temperature. Through the above-mentioned setting, the processing time of the polishing liquid can be shortened, thereby increasing the processing speed of the polishing liquid, and then improving the processing efficiency of the liquid stirring device 100. In addition, the temperature control system 19 can control the heater 18 to be at a constant temperature to avoid the damage of the barrel 12 caused by the excessive temperature of the heater 18, which is also conducive to improving the service life of the liquid stirring device 100.

[0037] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A liquid stirring device (100) for treating a polishing liquid, characterized in that: The liquid stirring device (100) comprises: Box body (11); A barrel body (12), the barrel body (12) being located inside the box body (11), and a stirring chamber (102) for storing the polishing liquid is formed inside the barrel body (12); and A stirring assembly (13), the stirring assembly (13) is located in the box (11), and the stirring assembly (13) comprises: a first stirring member (131), the first stirring member (131) being located in the stirring chamber (102), the first stirring member (131) being close to the bottom of the stirring chamber (102), and the first stirring member (131) having a degree of rotational freedom so that the first stirring member (131) can rotate relative to the barrel body (12); and A second stirring member (132), wherein the second stirring member (132) is located in the stirring chamber (102), the second stirring member (132) is located above the first stirring member (131), and the second stirring member (132) has a rotational freedom so that the second stirring member (132) can rotate relative to the barrel body (12).

2. The liquid stirring device (100) according to claim 1, characterized in that: The stirring assembly (13) further comprises a driving member (133), wherein the driving member (133) is located in the housing (11), and the driving member (133) is capable of driving the first stirring member (131) and the second stirring member (132) to rotate.

3. The liquid stirring device (100) according to claim 2, characterized in that: The stirring assembly (13) further comprises a stirring shaft (134), wherein the stirring shaft (134) extends in a vertical direction and is located in the stirring chamber (102), wherein the stirring shaft (134) is connected to the driving member (133), wherein the driving member (133) is capable of driving the stirring shaft (134) to rotate, and wherein the first stirring member (131) and the second stirring member (132) are both connected to the stirring shaft (134).

4. The liquid stirring device (100) according to claim 3, characterized in that: The first stirring member (131) comprises: a rotating support plate (1311), the rotating support plate (1311) being connected to the lower end of the stirring shaft (134); and a plurality of stirring blocks (1312), wherein the plurality of stirring blocks (1312) are distributed circumferentially around the stirring shaft (134) and are fixedly connected to the rotating support plate (1311); The second stirring member (132) and the first stirring member (131) have the same structure.

5. The liquid stirring device (100) according to claim 3, characterized in that: The second stirring member (132) comprises: a fan blade support tube (1321), wherein the fan blade support tube (1321) is sleeved on the stirring shaft (134) and connected to the stirring shaft (134); and A stirring blade (1322), wherein a plurality of the stirring blades (1322) are distributed circumferentially around the stirring shaft (134) and are fixedly connected to the blade support tube (1321); The first stirring member (131) and the second stirring member (132) have the same structure.

6. The liquid stirring device (100) according to claim 1, characterized in that: The liquid stirring device (100) further comprises: A liquid inlet assembly (14), the liquid inlet assembly (14) is located in the box body (11), and the liquid inlet assembly (14) is in communication with the barrel body (12); a liquid outlet assembly (15), the liquid outlet assembly (15) being located in the box body (11), the liquid outlet assembly (15) being in communication with the barrel body (12); and Two measuring devices (16), both of which are located in the box (11), one of which is connected to the liquid inlet component (14), and the other of which is connected to the liquid outlet component (15).

7. The liquid stirring device (100) according to claim 6, characterized in that: The liquid inlet assembly (14) comprises: a liquid inlet pipe (141), the liquid inlet pipe (141) being located in the box body (11), the liquid inlet pipe (141) being in communication with the barrel body (12); and A liquid inlet pump (142), the liquid inlet pump (142) is located in the box body (11), the liquid inlet pump (142) is integrated on the liquid inlet pipeline (141) and is in communication with the liquid inlet pipeline (141), and the measuring device (16) is located on the liquid inlet pipeline (141) between the liquid inlet pump (142) and the barrel body (12).

8. The liquid stirring device (100) according to claim 7, characterized in that: The liquid outlet component (15) comprises: a liquid outlet pipe (151), the liquid outlet pipe (151) being located in the box body (11), and the liquid outlet pipe (151) being in communication with the barrel body (12); and A liquid outlet pump (152), the liquid outlet pump (152) is located in the box body (11), the liquid outlet pump (152) is integrated on the liquid inlet pipe (141) and is in communication with the liquid inlet pipe (141), and the measuring device (16) is located on the liquid outlet pipe (151) between the liquid outlet pump (152) and the barrel body (12).

9. The liquid stirring device (100) according to claim 8, characterized in that: The liquid stirring device (100) further comprises a control system (17), wherein the control system (17) is at least partially located in the housing (11), and the control system (17) is electrically connected to the measuring device (16), the liquid inlet pump (142), and the liquid outlet pump (152).

10. The liquid stirring device (100) according to claim 1, characterized in that: The liquid stirring device (100) further comprises: a heater (18), the heater (18) being located in the box (11) and arranged around the barrel (12), the heater (18) being arranged in close contact with the barrel (12); and A temperature control system (19), wherein the temperature control system (19) is located in the box (11) and is electrically connected to the heater (18), and the temperature control system (19) is capable of adjusting the temperature of the heater (18).

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