Improved resin cooling device
Through the coordinated arrangement of the adjustment plate and the cam, the lifting plate is driven to reciprocate vertically, solving the problem of insufficient contact area between raw materials and cooling water in the resin cooling device, and achieving a more efficient cooling effect.
Patent Information
- Application Number
- CN202421482141.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-06-26
AI Technical Summary
During the cooling process of existing resin cooling devices, the contact area between raw materials such as resin, curing agent, adhesive, paint, coating or diluent and cooling water is limited, resulting in a low cooling rate, and improving the agitation method of the device occupies storage space and reducing cooling efficiency.
By coordinating the adjustment plate and the cam, the lifting plate is driven to move vertically, increase the contact area between the raw material and the cooling water, and use the rotation of the stirring fan blade to drive the reciprocating movement of the adjustment plate and the lifting plate to improve cooling efficiency.
Without increasing the storage space, the cooling efficiency of the resin cooling device is significantly improved, the contact area between raw materials and cooling water is enhanced, and the cooling effect is improved.
Smart Images
Figure CN223085145U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of cooling equipment, in particular to an improved resin cooling device. Background Technique
[0002] A resin cooling device is a device used to reduce the temperature of resin, and is widely used in resin processing, synthesis and other related industrial fields. In addition to cooling the resin, the resin cooling device can also cool raw materials such as curing agents, adhesives, paints, coatings or diluents to ensure that these raw materials maintain an appropriate temperature during the processing process, thereby improving product quality and production efficiency;
[0003] During the use of the resin cooling device, raw materials such as resin, curing agent, adhesive, paint, coating or diluent that need to be cooled are usually put into the interior of the cooling tank, and then cooling water is injected into the cavity opened inside the cooling tank. During the flow of the cooling water inside the cavity, the heat of the raw materials such as resin, curing agent, adhesive, paint, coating or diluent inside the tank body is absorbed, so as to cool the raw materials such as resin, curing agent, adhesive, paint, coating or diluent;
[0004] During the working process of the existing resin cooling device, although it can cool raw materials such as resin, curing agent, adhesive, paint, coating or diluent through cooling water, the contact area between these raw materials and the cooling water is limited, resulting in a relatively low cooling speed of the resin cooling device. Some improved resin cooling devices are provided with multiple groups of driving devices inside the cooling tank to stir raw materials such as resin, curing agent, adhesive, paint, coating or diluent from multiple angles at the same time. Although this method shortens the cooling time, it will also affect the storage space inside the improved resin cooling device, resulting in relatively less raw materials for each cooling, and reducing the cooling efficiency of the improved resin cooling device. For this reason, we propose an improved resin cooling device. Content of the Utility Model
[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide an improved resin cooling device. Through the cooperation setting of the adjusting plate and the cam, during the rotation of the stirring fan blade, the lifting plate can be driven to move vertically back and forth, increasing the contact area between raw materials such as resin, curing agent, adhesive, paint, coating or diluent and the cooling water without occupying too much storage space inside the improved resin cooling device, and further improving the cooling efficiency of the improved resin cooling device, which can effectively solve the problems in the background technique.
[0006] To achieve the above object, the utility model provides the following technical solution: an improved resin cooling device, including a tank body and a stirring mechanism;
[0007] Tank body: A protective cover is provided in the middle of its upper end. A feed pipe is arranged in the feed inlet opened on the front side of the upper end of the tank body. A feed valve is connected in series in the middle of the feed pipe. A discharge pipe is arranged in the discharge outlet opened on the right side of the outer arc surface of the tank body. A discharge valve is connected in series in the middle of the discharge pipe;
[0008] Stirring mechanism: It includes a rotating cylinder, a mounting rod, bevel gears and a cam. The rotating cylinder is rotatably connected to the middle of the top wall of the protective cover through a bearing. Limiting grooves are respectively arranged in the middle of the outer arc surface of the rotating cylinder. The mounting rod is rotatably connected to the lower side of the front wall of the protective cover through a bearing. Bevel gears are arranged on the rear side of the outer arc surface of the mounting rod and the lower side of the outer arc surface of the rotating cylinder. The two bevel gears are meshed and connected. A cam is arranged on the front side of the outer arc surface of the mounting rod. Through the cooperation setting of the adjusting plate and the cam, during the rotation of the stirring fan blades, the lifting plate can be driven to perform vertical reciprocating movement, increasing the contact area between raw materials such as resin, curing agent, adhesive, paint, coating or diluent and cooling water without taking up too much storage space inside the improved resin cooling device, and further improving the cooling efficiency of the improved resin cooling device.
[0009] Furthermore, it also includes a control switch. The control switch is located outside the tank body. The input end of the control switch is electrically connected to an external power supply, and can regulate the electrical components inside the equipment.
[0010] Furthermore, the stirring mechanism also includes an output rod, stirring fan blades, an adjusting plate and a limiting rod. The output rod is slidably connected to the avoidance groove arranged in the middle of the top wall of the tank body. Stirring fan blades are respectively arranged on the lower side of the outer arc surface of the output rod. The stirring fan blades are all located inside the tank body. Limiting rods are respectively arranged on the upper side of the outer arc surface of the output rod. The limiting rods are respectively slidably connected to the vertically adjacent limiting grooves. The adjusting plate is slidably connected to the inner wall of the protective cover. The lower end of the adjusting plate contacts the outer arc surface of the cam. The outer ends of the limiting rods are fixedly connected to the inner ring surface of the adjusting bearing. The adjusting bearing is arranged in the installation groove opened in the middle of the upper end of the adjusting plate, and can stir and mix raw materials such as resin, curing agent, adhesive, paint, coating or diluent.
[0011] Furthermore, the stirring mechanism also includes a lifting plate. The lifting plates are respectively arranged in the middle of the outer arc surface of the output rod. The lifting plates are respectively arranged at intervals with the stirring fan blades in the same group at the same height, and can drive raw materials such as resin, curing agent, adhesive, paint, coating or diluent to constantly tumble, thereby increasing the contact area between raw materials such as resin, curing agent, adhesive, paint, coating or diluent and cooling water.
[0012] Further, it further includes guide sliding columns and springs. The guide sliding columns are respectively arranged on the left and right sides of the top wall of the protective cover. The guide sliding columns are respectively slidably connected with the sliding holes correspondingly arranged at the upper ends of the adjusting plates. The springs are respectively arranged between the upper ends of the adjusting plates and the top wall of the protective cover. The springs are sleeved on the outer sides of the upper sides of the guide sliding columns and can drive the lifting plate to move and reset through the adjusting plates.
[0013] Further, it further includes a motor. The motor is arranged in the middle of the upper end of the protective cover. The lower end of the output shaft of the motor is fixedly connected with the upper end of the rotating cylinder. The input end of the motor is electrically connected with the output end of the control switch and can drive the stirring fan blades to rotate through the rotating cylinder.
[0014] Further, it further includes a cavity, a water inlet pipe and a drain pipe. The cavity is arranged on the upper side inside the tank body. The water inlet pipe is arranged in the water inlet opened on the upper side inside the cavity. A water inlet valve is connected in series in the middle of the water inlet pipe. The drain pipe is arranged in the drain outlet opened on the lower side inside the cavity. A drain valve is connected in series in the middle of the drain pipe. During the process of flowing inside the cavity, the cooling water absorbs the heat of raw materials such as resin, curing agent, adhesive, paint, coating or thinner inside the tank body, so as to cool the raw materials such as resin, curing agent, adhesive, paint, coating or thinner.
[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: The improved resin cooling device has the following advantages:
[0016] During the cooling operation, through the regulation of the control switch, the motor starts to run. The output shaft of the motor drives the rotating cylinder to rotate. The rotating cylinder drives the output rod to rotate through the limiting rod, and the output rod drives the stirring fan blades to rotate, thereby stirring raw materials such as resin, curing agent, adhesive, paint, coating or diluent. During the rotation of the rotating cylinder, the rotating cylinder drives the mounting rod to rotate through the meshing connection between bevel gears. The mounting rod drives the cam to rotate. When the contact point between the cam and the adjusting plate changes from the centripetal to the centrifugal, the adjusting plate is pushed by the cam and starts to drive the output rod to move downward through the limiting rod, and the spring extends. When the contact point between the cam and the adjusting plate changes from the centrifugal to the centripetal, the pulling force generated by the contraction of the spring causes the adjusting plate to drive the output rod to move upward through the limiting rod, so that the adjusting plate can drive the lifting plate to perform vertical reciprocating motion through the output rod. During the movement of the lifting plate, it can drive raw materials such as resin, curing agent, adhesive, paint, coating or diluent to constantly tumble, thereby increasing the contact area between the raw materials such as resin, curing agent, adhesive, paint, coating or diluent and the cooling water, and further improving the cooling efficiency. Through the cooperative setting of the adjusting plate and the cam, during the rotation of the stirring fan blades, the lifting plate can be driven to perform vertical reciprocating movement, increasing the contact area between the raw materials such as resin, curing agent, adhesive, paint, coating or diluent and the cooling water without occupying too much storage space inside the improved resin cooling device, and further improving the cooling efficiency of the improved resin cooling device. Description of the Drawings
[0017] Figure 1 is a schematic structural diagram of the present utility model;
[0018] Figure 2 is a schematic front sectional structural diagram of the present utility model;
[0019] Figure 3 is a schematic structural diagram of the stirring mechanism of the present utility model.
[0020] In the figure: 1 tank body, 2 control switch, 3 protective cover, 4 feed pipe, 5 discharge pipe, 6 stirring mechanism, 61 rotating cylinder, 62 output rod, 63 stirring fan blades, 64 lifting plate, 65 adjusting plate, 66 mounting rod, 67 bevel gear, 68 cam, 69 limiting rod, 7 cavity, 8 water inlet pipe, 9 drain pipe, 10 guiding slide post, 11 spring, 12 motor. Detailed Embodiment
[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0022] Please refer to Figures 1 - 3 , this embodiment provides a technical solution: an improved resin cooling device, including a tank body 1 and a stirring mechanism 6;
[0023] Tank body 1: A protective cover 3 is provided in the middle of the upper end of the tank body 1. A feed pipe 4 is provided in the feed port opened on the front side of the upper end of the tank body 1. A feed valve is connected in series in the middle of the feed pipe 4. A discharge pipe 5 is provided in the discharge port opened on the right side of the outer arc surface of the tank body 1. A discharge valve is connected in series in the middle of the discharge pipe 5. Before use, the improved resin cooling device is moved to a designated working location by an external traction device, so that the tank body 1 is installed and docked with the corresponding work station, thereby realizing the support and fixation of the tank body 1 and the internal equipment. Then, the water inlet pipe 8 and the drain pipe 9 are docked with the external pipeline. During work, the feed pipe is opened, and raw materials such as resin, curing agent, adhesive, paint, coating or diluent that need to be cooled are added into the interior of the tank body 1 through the feed pipe 4. After the addition is completed, the feed valve is closed again. Then, the cooling component cools the raw materials such as resin, curing agent, adhesive, paint, coating or diluent. During the cooling process, the raw materials such as resin, curing agent, adhesive, paint, coating or diluent are stirred by a stirring device, thereby increasing the contact area between the raw materials such as resin, curing agent, adhesive, paint, coating or diluent and the cooling water and further improving the cooling efficiency. After the cooling work is completed, the discharge valve is opened, and the cooled raw materials such as resin, curing agent, adhesive, paint, coating or diluent are discharged through the discharge pipe 5;
[0024] Stirring mechanism 6: It includes a rotating cylinder 61, a mounting rod 66, bevel gears 67 and a cam 68. The rotating cylinder 61 is rotatably connected to the middle of the top wall of the protective cover 3 through a bearing. Limiting grooves are respectively arranged in the middle of the outer arc surface of the rotating cylinder 61. The mounting rod 66 is rotatably connected to the lower side of the front wall of the protective cover 3 through a bearing. Bevel gears 67 are arranged on the rear side of the outer arc surface of the mounting rod 66 and the lower side of the outer arc surface of the rotating cylinder 61 respectively, and the two bevel gears 67 are meshed and connected. A cam 68 is arranged on the front side of the outer arc surface of the mounting rod 66. The stirring mechanism 6 further includes an output rod 62, stirring fan blades 63, an adjusting plate 65 and a limiting rod 69. The output rod 62 is slidably connected to the avoidance groove arranged in the middle of the top wall of the tank body 1. Stirring fan blades 63 are respectively arranged on the lower side of the outer arc surface of the output rod 62, and the stirring fan blades 63 are all located inside the tank body 1. Limiting rods 69 are respectively arranged on the upper side of the outer arc surface of the output rod 62, and the limiting rods 69 are respectively slidably connected to the vertically adjacent limiting grooves. The adjusting plate 65 is slidably connected to the inner wall of the protective cover 3, and the lower end of the adjusting plate 65 is in contact with the outer arc surface of the cam 68. The outer ends of the limiting rods 69 are fixedly connected to the inner ring surface of the adjusting bearing, and the adjusting bearing is arranged in the mounting groove opened in the middle of the upper end of the adjusting plate 65. The stirring mechanism 6 further includes a lifting plate 64, and the lifting plates 64 are respectively arranged in the middle of the outer arc surface of the output rod 62. The lifting plates 64 are respectively arranged at intervals with the stirring fan blades 63 in the same group at the same height. During the cooling operation, through the regulation of the control device, the driving device starts to operate. The output shaft of the driving device drives the rotating cylinder 61 to rotate. The rotating cylinder 61 drives the output rod 62 to rotate through the limiting rod 69, and the output rod 62 drives the stirring fan blades 63 to rotate, so as to stir raw materials such as resin, curing agent, adhesive, paint, coating or diluent. During the rotation of the rotating cylinder 61, the rotating cylinder 61 drives the mounting rod 66 to rotate through the meshing connection between the bevel gears 67, and the mounting rod 66 drives the cam 68 to rotate. When the contact point between the cam 68 and the adjusting plate 65 changes from the centripetal to the centrifugal, the adjusting plate 65 starts to drive the output rod 62 to move downward through the limiting rod 69 under the thrust of the cam 68, and the reset device extends. When the contact point between the cam 68 and the adjusting plate 65 changes from the centrifugal to the centripetal, the pulling force generated by the contraction of the reset device makes the adjusting plate 65 drive the output rod 62 to move upward through the limiting rod 69, so that the adjusting plate 65 can drive the lifting plate 64 to perform vertical reciprocating motion through the output rod 62. During the movement of the lifting plate 64, it can drive raw materials such as resin, curing agent, adhesive, paint, coating or diluent to constantly tumble, thereby increasing the contact area between raw materials such as resin, curing agent, adhesive, paint, coating or diluent and the cooling water, and further improving the cooling efficiency. Through the cooperative setting of the adjusting plate 65 and the cam 68, during the rotation of the stirring fan blades 63, the lifting plate 64 can be driven to perform vertical reciprocating movement.Without taking up too much storage space inside the improved resin cooling device, the contact area between raw materials such as resin, curing agent, adhesive, paint, coating or diluent and cooling water is increased, further improving the cooling efficiency of the improved resin cooling device.
[0025] Among them: It also includes a control switch 2. The control switch 2 is located outside the tank body 1. The input end of the control switch 2 is electrically connected to an external power supply, and can regulate the electrical components inside the device.
[0026] Among them: It also includes a guiding slide column 10 and a spring 11. The guiding slide columns 10 are respectively arranged on the left and right sides of the top wall of the protective cover 3. The guiding slide columns 10 are respectively slidably connected to the sliding holes correspondingly arranged at the upper ends of the adjusting plate 65. The springs 11 are respectively arranged between the upper ends of the adjusting plate 65 and the top wall of the protective cover 3. The springs 11 are all sleeved on the outer sides of the upper sides of the guiding slide columns 10. The pulling force generated by the contraction of the springs 11 causes the adjusting plate 65 to drive the output rod 62 to move upward and reset through the limiting rod 69.
[0027] Among them: It also includes a motor 12. The motor 12 is arranged in the middle of the upper end of the protective cover 3. The lower end of the output shaft of the motor 12 is fixedly connected to the upper end of the rotating cylinder 61. The input end of the motor 12 is electrically connected to the output end of the control switch 2. During the cooling operation, through the regulation of the control switch 2, the motor 12 starts to operate. The output shaft of the motor 12 drives the rotating cylinder 61 to rotate. The rotating cylinder 61 drives the output rod 62 to rotate through the limiting rod 69, and the output rod 62 drives the stirring fan blades 63 to rotate, thereby stirring raw materials such as resin, curing agent, adhesive, paint, coating or diluent.
[0028] Among them: It also includes a cavity 7, a water inlet pipe 8 and a drain pipe 9. The cavity 7 is arranged on the upper side inside the tank body 1. The water inlet pipe 8 is arranged in the water inlet opened on the upper side inside the cavity 7. A water inlet valve is connected in series in the middle of the water inlet pipe 8. The drain pipe 9 is arranged in the drain opening opened on the lower side inside the cavity 7. A drain valve is connected in series in the middle of the drain pipe 9. During operation, open the feed pipe, and add raw materials such as resin, curing agent, adhesive, paint, coating or diluent that need to be cooled into the inside of the tank body 1 through the feed pipe 4. After the addition is completed, close the feed valve again. Then open the water inlet valve and the drain valve. External cooling water enters the inside of the cavity 7 through the water inlet pipe 8. During the process of the cooling water flowing inside the cavity 7, it absorbs the heat of raw materials such as resin, curing agent, adhesive, paint, coating or diluent inside the tank body 1, thereby cooling the raw materials such as resin, curing agent, adhesive, paint, coating or diluent, and discharging the used cooling water through the drain pipe 9.
[0029] The working principle of an improved resin cooling device provided by the utility model is as follows: Before use, the improved resin cooling device is moved to a designated working location by an external traction device, so that the tank body 1 is installed and docked with the corresponding work station, thereby realizing the support and fixation of the tank body 1 and the internal equipment. Then, the water inlet pipe 8 and the drain pipe 9 are docked with external pipelines. During work, the feed pipe is opened, and raw materials such as resin, curing agent, adhesive, paint, coating or diluent that need to be cooled are added into the interior of the tank body 1 through the feed pipe 4. After the addition is completed, the feed valve is closed again. Then, the water inlet valve and the drain valve are opened. The external cooling water enters the interior of the cavity 7 through the water inlet pipe 8. During the process of the cooling water flowing in the cavity 7, it absorbs the heat of the raw materials such as resin, curing agent, adhesive, paint, coating or diluent inside the tank body 1, thereby cooling the raw materials such as resin, curing agent, adhesive, paint, coating or diluent. The used cooling water is discharged through the drain pipe 9. During the cooling process, through the regulation of the control switch 2, the motor 12 starts to operate. The output shaft of the motor 12 drives the rotating cylinder 61 to rotate. The rotating cylinder 61 drives the output rod 62 to rotate through the limiting rod 69. The output rod 62 drives the stirring fan blades 63 to rotate, thereby stirring the raw materials such as resin, curing agent, adhesive, paint, coating or diluent. During the rotation of the rotating cylinder 61, the rotating cylinder 61 drives the mounting rod 66 to rotate through the meshing connection between the bevel gears 67. The mounting rod 66 drives the cam 68 to rotate. When the contact point between the cam 68 and the adjusting plate 65 changes from the center to the far center, the adjusting plate 65 is pushed by the cam 68 and starts to drive the output rod 62 to move downward through the limiting rod 69, and the spring 11 extends. When the contact point between the cam 68 and the adjusting plate 65 changes from the far center to the center, the pulling force generated by the contraction of the spring 11 causes the adjusting plate 65 to drive the output rod 62 to move upward through the limiting rod 69, so that the adjusting plate 65 can drive the lifting plate 64 to perform vertical reciprocating motion through the output rod 62. During the movement of the lifting plate 64, it can drive the raw materials such as resin, curing agent, adhesive, paint, coating or diluent to constantly tumble, thereby increasing the contact area between the raw materials such as resin, curing agent, adhesive, paint, coating or diluent and the cooling water and further improving the cooling efficiency. After the cooling work is completed, the discharge valve is opened, and the cooled raw materials such as resin, curing agent, adhesive, paint, coating or diluent are discharged through the discharge pipe 5.
[0030] It should be noted that the motor 12 disclosed in the above embodiments can be selected as 5IK200A - AF, and the control switch 2 is provided with control buttons corresponding to the motor 12 one by one for controlling its switch.
[0031] The above are only embodiments of the present utility model, and do not thus limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present utility model.
Claims
1. An improved resin cooling device, characterized in that: It includes a tank body (1) and a stirring mechanism (6); Tank body (1): A protective cover (3) is provided in the middle of its upper end. A feed pipe (4) is provided in the feed inlet opened on the front side of the upper end of the tank body (1). A feed valve is connected in series in the middle of the feed pipe (4). A discharge pipe (5) is provided in the discharge outlet opened on the right side of the outer arc surface of the tank body (1). A discharge valve is connected in series in the middle of the discharge pipe (5); Stirring mechanism (6): It includes a rotating cylinder (61), a mounting rod (66), bevel gears (67) and a cam (68). The rotating cylinder (61) is rotatably connected to the middle of the top wall of the protective cover (3) through a bearing. Limiting grooves are respectively provided in the middle of the outer arc surface of the rotating cylinder (61). The mounting rod (66) is rotatably connected to the lower side of the front wall of the protective cover (3) through a bearing. Bevel gears (67) are provided on the rear side of the outer arc surface of the mounting rod (66) and the lower side of the outer arc surface of the rotating cylinder (61). The two bevel gears (67) are meshed and connected. A cam (68) is provided on the front side of the outer arc surface of the mounting rod (66).
2. An improved resin cooling device according to claim 1, characterized in that: It further includes a control switch (2). The control switch (2) is located outside the tank body (1). The input end of the control switch (2) is electrically connected to an external power supply.
3. An improved resin cooling device according to claim 1, characterized in that: The stirring mechanism (6) further includes an output rod (62), stirring fan blades (63), an adjusting plate (65) and a limiting rod (69). The output rod (62) is slidably connected to the avoidance groove provided in the middle of the top wall of the tank body (1). Stirring fan blades (63) are respectively provided on the lower side of the outer arc surface of the output rod (62). The stirring fan blades (63) are all located inside the tank body (1). Limiting rods (69) are respectively provided on the upper side of the outer arc surface of the output rod (62). The limiting rods (69) are respectively slidably connected to the vertically adjacent limiting grooves. The adjusting plate (65) is slidably connected to the inner wall of the protective cover (3). The lower end of the adjusting plate (65) is in contact with the outer arc surface of the cam (68). The outer ends of the limiting rods (69) are fixedly connected to the inner ring surface of the adjusting bearing. The adjusting bearing is arranged in the mounting groove opened in the middle of the upper end of the adjusting plate (65).
4. An improved resin cooling device according to claim 3, characterized in that: The stirring mechanism (6) further includes a lifting plate (64). The lifting plates (64) are respectively provided in the middle of the outer arc surface of the output rod (62). The lifting plates (64) are respectively arranged at intervals with a group of stirring fan blades (63) at the same height.
5. An improved resin cooling device according to claim 3, characterized in that: It further includes guide sliding columns (10) and springs (11). The guide sliding columns (10) are respectively provided on the left and right sides of the top wall of the protective cover (3). The guide sliding columns (10) are respectively slidably connected to the sliding holes corresponding to the upper ends of the adjusting plate (65). Springs (11) are respectively provided between the upper end of the adjusting plate (65) and the top wall of the protective cover (3). The springs (11) are all sleeved on the outer side of the upper side of the guide sliding columns (10).
6. An improved resin cooling device according to claim 2, wherein: It further includes a motor (12). The motor (12) is arranged in the middle of the upper end of the protective cover (3). The lower end of the output shaft of the motor (12) is fixedly connected to the upper end of the rotating cylinder (61). The input end of the motor (12) is electrically connected to the output end of the control switch (2).
7. An improved resin cooling device according to claim 1, characterized in that: It also includes a cavity (7), a water inlet pipe (8) and a drain pipe (9). The cavity (7) is arranged on the upper side inside the tank body (1). The water inlet pipe (8) is arranged in the water inlet opened on the upper side inside the cavity (7). A water inlet valve is connected in series in the middle of the water inlet pipe (8). The drain pipe (9) is arranged in the drain port opened on the lower side inside the cavity (7). A drain valve is connected in series in the middle of the drain pipe (9).