A material stirring device for pharmaceutical tanks
By combining stirring blades, spiral turning blades, and rolling rollers, the problems of uneven mixing of raw materials and improper air pressure control in pharmaceutical tanks are solved, achieving full mixing of raw materials and safe and stable tank operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DALIAN JINXIU BIOLOGICAL ENG
- Filing Date
- 2025-08-05
- Publication Date
- 2026-06-30
AI Technical Summary
Existing pharmaceutical tank material mixing devices are prone to causing raw materials to separate, stratify, and settle during the mixing process. They are also difficult to effectively mix large particles or agglomerated raw materials. Furthermore, improper control of the internal air pressure of the tank can easily lead to expansion and bursting.
The mixing process uses stirring blades and spiral turning blades, combined with rolling rollers to disperse large particles. Electric heating strips are used to maintain the temperature, and the internal air pressure of the tank is monitored and controlled by an air pressure regulating mechanism.
It achieves thorough mixing of pharmaceutical raw materials and stable control of gas pressure, avoiding the risks of raw material separation and tank rupture, and improving stirring efficiency and safety.
Smart Images

Figure CN224422688U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of pharmaceutical manufacturing, specifically relating to a material stirring device for pharmaceutical tanks. Background Technology
[0002] As a crucial link in the pharmaceutical industry, the pharmaceutical field plays a vital role in the quality of drugs. In the pharmaceutical process, it is usually necessary to use pharmaceutical tanks to stir the raw materials. Stirring devices are commonly used equipment in the pharmaceutical process. They are generally installed inside pharmaceutical tanks to stir and mix pharmaceutical raw materials.
[0003] Currently, the material mixing devices inside pharmaceutical tanks use simple mixing structures to agitate the raw materials. This can lead to centrifugal separation of the raw materials due to rotation, resulting in stratification of raw materials of different densities. Consequently, the raw materials cannot be effectively mixed horizontally and vertically. Furthermore, large particles or clumps of raw materials may be present and sink to the bottom of the tank, hindering mixing and dispersion. Additionally, maintaining a certain temperature inside the tank is necessary for mixing. As the raw materials are mixed, the tank becomes pressurized due to heat, causing expansion and gas buildup. Failure to effectively regulate and control the internal pressure can easily lead to the tank bursting, posing a safety hazard. Utility Model Content
[0004] The purpose of this invention is to provide a material stirring device for pharmaceutical tanks, which aims to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A material stirring device for a pharmaceutical tank, comprising,
[0007] The pharmaceutical container includes a container body, electric heating strips uniformly fixed to the outside of the container body, a cover plate fastened to the top of the container body, a mounting bracket fixed to the middle of the top of the cover plate, and an internal air pressure regulating mechanism installed on the top of the cover plate.
[0008] The stirring mechanism includes a first rotating rod that is rotatably inserted into the inner edge of the tank, a first gear fixedly installed at the top of the first rotating rod, and stirring blades uniformly fixed to the surface of the first rotating rod.
[0009] The upper and lower mixing mechanism includes a second rotating rod that is rotatably inserted into the middle of the tank, a spiral turning blade that is spirally fixed to the surface of the second rotating rod, a second gear that is fixedly installed at the top of the second rotating rod, and a particle crushing mechanism installed at the bottom of the second rotating rod.
[0010] As a preferred embodiment of this utility model, the internal air pressure regulating mechanism of the tank includes a feed pipe fixed to the top of the cover plate, a plug threaded into the feed pipe, a guide groove opened inside the plug thread, and pressure relief holes opened on both sides of the surface of the guide groove.
[0011] In a preferred embodiment of this utility model, the feed pipe is inserted and fixed to the top of the cover plate, and its bottom end is connected to the interior of the tank. The inner surface of the feed pipe has an internal thread structure, the plug is a threaded post structure, the pressure relief holes are vertically and evenly distributed, and a pressure monitoring gauge is installed at the top of the plug. The pressure monitoring gauge monitors the internal air pressure of the tank through a pressure sensor.
[0012] As a preferred embodiment of this utility model, the particle crushing mechanism includes a crushing surface that is conical in shape and disposed at the bottom of the tank, a support rod that is fixedly installed on both sides of the bottom end of the second rotating rod, and a crushing roller that is rotatably installed at the bottom end of the support rod.
[0013] In a preferred embodiment of this utility model, the two support rods are V-shaped, and the inner side of the support rods has a groove. An installation rod is fixed inside the groove, and the rolling roller is rotatably sleeved on the surface of the installation rod. The rolling roller is inclined and abuts against the surface of the rolling surface.
[0014] In a preferred embodiment of this utility model, a connecting rod is horizontally fixed at the bottom of the inner side of the tank, and a limiting ring is fixed at the inner end of several connecting rods. The limiting rings are spaced around the bottom outer side of the spiral turning blades. The bottom end of the first rotating rod rotates and abuts against the surface of the connecting rod, and the bottom end of the second rotating rod rotates and abuts against the bottom of the inner side of the tank. The stirring blades are all spaced around the spiral turning blades.
[0015] In a preferred embodiment of this utility model, both the first rotating rod and the second rotating rod rotate vertically through the cover plate, and both the first gear and the second gear are rotatably mounted on the top of the cover plate. A plurality of the first gears are meshed and connected around the second gear. A motor is mounted on the top of the second rotating rod, and the motor is fixedly mounted in the middle of the top of the mounting frame. The mounting frame spans across the top of the outer side of the second gear.
[0016] As a preferred embodiment of this utility model, the bottom end of the tank is connected to a discharge pipe, the tank is a cylindrical structure and is vertically arranged, and the bottom edge is uniformly fixed with support legs, and the electric heating strips are all vertically and equidistantly arranged.
[0017] Compared with the prior art, the beneficial effects of this utility model are:
[0018] 1. By rotating the stirring blades and spiral turning blades, the pharmaceutical raw materials inside the tank are mixed left and right and turned up and mixed, avoiding centrifugal, settling and stratification of the pharmaceutical raw materials. The large particles or agglomerates that settle on the grinding surface are crushed and dispersed by the rotation of the grinding roller, which facilitates the full mixing of the pharmaceutical raw materials inside the pharmaceutical tank.
[0019] 2. By uniformly installing electric heating strips on the outer surface of the tank, the mixing of pharmaceutical raw materials inside the tank is heated. At the same time, the internal air pressure can be monitored by a pressure monitoring gauge, and the internal air pressure can be adjusted and controlled by the guide groove and pressure relief hole on the plug-in column to prevent the internal tank from expanding and bursting as the pharmaceutical raw materials are mixed. Attached Figure Description
[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a partial structural diagram of the stirring mechanism and the upper and lower mixing mechanism of this utility model;
[0023] Figure 3 This is a schematic diagram of part of the stirring mechanism of this utility model;
[0024] Figure 4 This is a partial structural diagram of the upper and lower mixing mechanism and the particle crushing mechanism of this utility model;
[0025] Figure 5 This is a partial structural diagram of the internal air pressure regulating mechanism of the tank of this utility model.
[0026] In the diagram: 1. Pharmaceutical tank; 11. Tank body; 12. Support leg; 13. Discharge pipe; 14. Electric heating strip; 15. Cover plate; 16. Mounting frame; 2. Stirring mechanism; 21. First gear; 22. Connecting rod; 23. Stirring blade; 24. First rotating rod; 25. Limiting ring; 3. Upper and lower mixing mechanism; 31. Motor; 32. Second rotating rod; 33. Spiral turning blade; 34. Second gear; 4. Internal air pressure regulating mechanism of the tank body; 41. Feed pipe; 42. Guide groove; 43. Insertion post; 44. Pressure relief hole; 45. Pressure monitoring gauge; 5. Particle crushing mechanism; 51. Crushing surface; 52. Crushing roller; 53. Mounting rod; 54. Groove; 55. Support rod. Detailed Implementation
[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0028] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0029] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.
[0030] Example 1
[0031] Reference Figure 1-5 This is the first embodiment of the present invention, which provides a material stirring device for a pharmaceutical tank, comprising:
[0032] The pharmaceutical container 1 includes a container body 11, an electric heating strip 14 uniformly fixed to the outside of the container body 11, a cover plate 15 fastened to the top of the container body 11, a mounting bracket 16 fixed to the middle of the top of the cover plate 15, and an internal air pressure regulating mechanism 4 installed on the top of the cover plate 15.
[0033] The stirring mechanism 2 includes a first rotating rod 24 that is rotatably inserted into the inner edge of the tank 11, a first gear 21 that is fixedly installed on the top of the first rotating rod 24, and stirring blades 23 that are uniformly fixed on the surface of the first rotating rod 24.
[0034] The upper and lower mixing mechanism 3 includes a second rotating rod 32 that is rotatably inserted into the middle of the tank 11, a spiral turning blade 33 that is spirally fixed to the surface of the second rotating rod 32, a second gear 34 that is fixedly installed at the top of the second rotating rod 32, and a particle crushing mechanism 5 installed at the bottom of the second rotating rod 32.
[0035] The pharmaceutical raw materials inside the tank 11 are mixed left and right and turned up and turned up by the rotation of the stirring blade 23 and the spiral turning blade 33, so as to avoid the pharmaceutical raw materials from centrifugation, settling and stratification. The large particles or agglomerates that settle on the rolling surface 51 are rolled and dispersed by the rotation of the rolling roller 52, so as to facilitate the full mixing of the pharmaceutical raw materials inside the pharmaceutical tank 1.
[0036] Furthermore, a connecting rod 22 is horizontally fixed at the bottom of the tank body 11. A limiting ring 25 is fixed at the inner end of several connecting rods 22. The limiting ring 25 is spaced around the bottom of the outer side of the spiral turning blade 33. The bottom end of the first rotating rod 24 rotates and abuts against the surface of the connecting rod 22. The bottom end of the second rotating rod 32 rotates and abuts against the bottom of the tank body 11. The stirring blades 23 are all spaced around the spiral turning blade 33.
[0037] The first rotating rod 24 is supported by the connecting rod 22 to keep the stirring blade 23 rotating stably, which is conducive to uniform stirring of pharmaceutical raw materials. The bottom of the spiral turning blade 33 is limited and stabilized by the limiting ring 25 to keep the spiral turning blade 33 rotating and turning the pharmaceutical raw materials up and down.
[0038] Furthermore, the first rotating rod 24 and the second rotating rod 32 both rotate vertically through the cover plate 15, the first gear 21 and the second gear 34 are both rotatably mounted on the top of the cover plate 15, and several first gears 21 are meshed and connected around the second gear 34. A motor 31 is mounted on the top of the second rotating rod 32, and the motor 31 is fixedly mounted in the middle of the top of the mounting bracket 16. The mounting bracket 16 spans across the top of the outer side of the second gear 34.
[0039] The motor 31 drives the second rotating rod 32 and the second gear 34 to rotate. The second gear 34 meshes with and drives the four surrounding first gears 21 to rotate, thereby driving the four first rotating rods 24 to rotate. This causes the stirring blades 23 to rotate around the spiral turning blades 33, preventing the pharmaceutical raw materials from being centrifugally dispersed and improving the mixing degree of the pharmaceutical raw materials.
[0040] Specifically, the particle crushing mechanism 5 includes a crushing surface 51 that is conical and located at the bottom of the tank 11, a support rod 55 that is fixedly installed on both sides of the bottom of the second rotating rod 32, and a crushing roller 52 that is rotatably installed at the bottom of the support rod 55.
[0041] In this process, the second rotating rod 32 drives the spiral turning blade 33 to rotate, and also drives the support rod 55 to rotate. The crushing roller 52 is rotatably installed at the bottom end of the support rod 55 and rotates around the crushing surface 51, thereby crushing and pulverizing large particles or agglomerated materials that have settled on the surface of the crushing surface 51, so as to facilitate the full mixing of pharmaceutical raw materials.
[0042] Preferably, the two support rods 55 have a V-shaped structure, and the inner side of the support rod 55 has a groove 54. The mounting rod 53 is fixed inside the groove 54. The rolling roller 52 is rotated and sleeved on the surface of the mounting rod 53, and the rolling roller 52 is inclined and abuts against the surface of the rolling surface 51.
[0043] The rolling roller 52 is mounted at the bottom of the support rod 55 by means of the mounting rod 53, and is used to crush and pulverize large particles or agglomerated materials that have settled on the surface of the rolling surface 51.
[0044] It should be noted that the internal air pressure regulating mechanism 4 of the tank includes a feed pipe 41 fixed to the top of the cover plate 15, a plug post 43 threaded into the feed pipe 41, a guide groove 42 opened inside the plug post 43, and pressure relief holes 44 opened on both sides of the surface of the guide groove 42.
[0045] The mixing of pharmaceutical raw materials inside the tank 11 is heated by uniformly installing electric heating strips 14 on the outer surface of the tank 11. At the same time, the air pressure inside the tank 11 can be monitored by pressure monitoring gauge 45, and the air pressure inside the tank 11 can be adjusted and controlled by the guide groove 42 and pressure relief hole 44 on the plug-in column 43 to prevent the pharmaceutical raw materials inside the tank 11 from expanding and bursting as they are mixed.
[0046] Furthermore, the feed pipe 41 is inserted and fixed to the top of the cover plate 15, and its bottom end is connected to the inside of the tank body 11. The inner surface of the feed pipe 41 is an internal thread structure, the plug post 43 is a threaded post structure, the pressure relief holes 44 are vertically and evenly distributed, and a pressure monitoring gauge 45 is installed at the top of the plug post 43. The pressure monitoring gauge 45 monitors the internal air pressure of the tank body 11 through a pressure sensor.
[0047] The bottom end of the tank 11 is connected to a discharge pipe 13. The tank 11 is a cylindrical structure and is vertically arranged. Support legs 12 are evenly fixed on its bottom edge, and electric heating bars 14 are all vertically and equidistantly arranged.
[0048] During the heating process of the tank 11 by the electric heating strip 14, the pharmaceutical raw materials are stirred and mixed inside the tank 11 by the stirring mechanism 2 and the upper and lower mixing mechanism 3. As the pharmaceutical raw materials inside the tank 11 continue to mix, the air pressure inside the tank 11 will increase. The air pressure inside the tank 11 is monitored by the pressure monitoring gauge 45. When the air pressure inside the tank 11 is greater than the set value, the plug 43 can be rotated to adjust the height of the plug 43 and adjust the number of pressure relief holes 44 exposed at the top of the feed pipe 41, so that the air pressure inside the tank 11 can be discharged from the pressure relief holes 44. In this way, the air pressure inside the tank 11 can be adjusted and controlled to maintain the convenience of stirring and mixing of pharmaceutical raw materials inside the tank 11 and avoid the risk of the tank 11 bursting.
[0049] When in use, first remove the plug 43, add the pharmaceutical raw materials into the tank 11 through the feed pipe 41, and at the same time, the electric heating strip 14 is powered by an external power source and heats the inside of the tank 11. After all the required pharmaceutical raw materials have been added into the tank 11, the plug 43 is inserted into the feed pipe 41. At the same time, the pressure monitoring gauge 45 monitors the air pressure inside the tank 11.
[0050] The motor 31 drives the second rotating rod 32 and the second gear 34 to rotate. The second gear 34 meshes with and drives the four surrounding first gears 21 to rotate, thereby driving the four first rotating rods 24 to rotate. This causes the stirring blade 23 to rotate around the spiral turning blade 33. At the same time, the spiral turning blade 33 rotates spirally and turns the lower layer of pharmaceutical raw materials upward. Therefore, it avoids the pharmaceutical raw materials from being centrifugally dispersed and causing stratification or sedimentation, and improves the mixing degree of the pharmaceutical raw materials.
[0051] During the rotation of the second rotating rod 32, the spiral turning blade 33 is driven to rotate, and the support rod 55 is driven to rotate. The crushing roller 52 is installed at the bottom of the support rod 55 and rotates around the crushing surface 51, thereby crushing and pulverizing large particles or agglomerated materials that have settled on the surface of the crushing surface 51, so as to facilitate the full mixing of pharmaceutical raw materials.
[0052] During the heating process of the tank 11 by the electric heating strip 14, the pharmaceutical raw materials are stirred and mixed inside the tank 11 by the stirring mechanism 2 and the upper and lower mixing mechanism 3. As the pharmaceutical raw materials inside the tank 11 continue to mix, the air pressure inside the tank 11 will increase. The air pressure inside the tank 11 is monitored by the pressure monitoring gauge 45. When the air pressure inside the tank 11 is greater than the set value, the plug pin 43 can be rotated to adjust the height of the plug pin 43 and adjust the number of pressure relief holes 44 exposed at the top of the feed pipe 41, so that the air pressure inside the tank 11 can be discharged from the pressure relief holes 44. In this way, the air pressure inside the tank 11 can be adjusted and controlled to maintain the convenience of stirring and mixing of pharmaceutical raw materials inside the tank 11 and avoid the risk of the tank 11 bursting.
[0053] In summary, by rotating the stirring blade 23 and the spiral turning blade 33, the pharmaceutical raw materials inside the tank 11 are mixed left and right and turned up and mixed, avoiding centrifugal, settling and stratification of the pharmaceutical raw materials. The large particles or agglomerates that settle on the rolling surface 51 are rolled and dispersed by the rotation of the rolling roller 52, which facilitates the full mixing of the pharmaceutical raw materials inside the pharmaceutical tank 1.
[0054] By uniformly installing electric heating strips 14 on the outer surface of the tank 11, the mixing of pharmaceutical raw materials inside the tank 11 is heated. At the same time, the air pressure inside the tank 11 can be monitored by pressure monitoring gauge 45, and the air pressure inside the tank 11 can be adjusted and controlled by the guide groove 42 and pressure relief hole 44 on the plug-in column 43 to prevent the pharmaceutical raw materials inside the tank 11 from expanding and bursting as they are stirred and mixed.
[0055] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, variations in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values such as temperature, pressure, etc., installation arrangements, use of materials, color, orientation, etc. For instance, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure performing the function described herein, and not only structural equivalents but also equivalent structures. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of this utility model. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.
[0056] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments may be described, i.e., those features that are not relevant to the currently considered best mode for carrying out the present invention, or those features that are not relevant to implementing the present invention.
[0057] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine task in design, manufacturing, and production without requiring extensive experimentation.
[0058] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.
Claims
1. A material stirring device for a pharmaceutical tank, characterized in that: include, The pharmaceutical container (1) includes a container body (11), an electric heating strip (14) uniformly fixed to the outside of the container body (11), a cover plate (15) fastened to the top of the container body (11), a mounting bracket (16) fixed to the middle of the top of the cover plate (15), and an internal air pressure regulating mechanism (4) installed on the top of the cover plate (15). The stirring mechanism (2) includes a first rotating rod (24) that is rotatably inserted into the inner edge of the tank (11), a first gear (21) fixedly installed on the top of the first rotating rod (24), and stirring blades (23) uniformly fixed on the surface of the first rotating rod (24); The upper and lower mixing mechanism (3) includes a second rotating rod (32) that is rotatably inserted into the middle of the tank (11), a spiral turning blade (33) that is spirally fixed to the surface of the second rotating rod (32), a second gear (34) that is fixedly installed at the top of the second rotating rod (32), and a particle crushing mechanism (5) installed at the bottom of the second rotating rod (32).
2. The material stirring device in a pharmaceutical tank according to claim 1, characterized in that: The internal air pressure regulating mechanism (4) of the tank includes a feed pipe (41) fixed to the top of the cover plate (15), a plug (43) threaded into the feed pipe (41), a guide groove (42) opened in the plug (43), and pressure relief holes (44) opened on both sides of the surface of the guide groove (42).
3. The material stirring device inside a pharmaceutical tank according to claim 2, characterized in that: The feed pipe (41) is inserted and fixed to the top of the cover plate (15), and its bottom end is connected to the inside of the tank (11). The inner surface of the feed pipe (41) is an internal thread structure, the plug (43) is a threaded column structure, the pressure relief holes (44) are vertically and evenly distributed, and a pressure monitoring gauge (45) is installed at the top of the plug (43). The pressure monitoring gauge (45) monitors the internal air pressure of the tank (11) through a pressure sensor.
4. The material stirring device in a pharmaceutical tank according to claim 1, characterized in that: The particle crushing mechanism (5) includes a crushing surface (51) that is conical and located at the bottom of the tank (11), a support rod (55) that is fixedly installed on both sides of the bottom of the second rotating rod (32), and a crushing roller (52) that is rotatably installed at the bottom of the support rod (55).
5. The material stirring device in a pharmaceutical tank according to claim 4, characterized in that: The two support rods (55) are V-shaped structures. The inner side of the support rod (55) has a groove (54). An installation rod (53) is fixed inside the groove (54). The rolling roller (52) is rotatably sleeved on the surface of the installation rod (53). The rolling roller (52) is inclined to abut against the surface of the rolling surface (51).
6. The material stirring device in a pharmaceutical tank according to claim 1, characterized in that: A connecting rod (22) is horizontally fixed at the bottom of the inner side of the tank (11). A limiting ring (25) is fixed at the inner end of several connecting rods (22). The limiting ring (25) is spaced around the bottom of the outer side of the spiral turning blade (33). The bottom end of the first rotating rod (24) rotates and abuts against the surface of the connecting rod (22). The bottom end of the second rotating rod (32) rotates and abuts against the bottom of the inner side of the tank (11). The stirring blades (23) are all spaced around the spiral turning blade (33).
7. The material stirring device in a pharmaceutical tank according to claim 1, characterized in that: The first rotating rod (24) and the second rotating rod (32) both rotate vertically through the cover plate (15). The first gear (21) and the second gear (34) are both rotatably mounted on the top of the cover plate (15). Several first gears (21) are meshed and connected around the second gear (34). A motor (31) is mounted on the top of the second rotating rod (32). The motor (31) is fixedly mounted in the middle of the top of the mounting frame (16). The mounting frame (16) spans the top of the outer side of the second gear (34).
8. The material stirring device in a pharmaceutical tank according to claim 1, characterized in that: The bottom end of the tank (11) is connected to a discharge pipe (13). The tank (11) is a cylindrical structure and is vertically arranged. Support legs (12) are evenly fixed on its bottom edge. The electric heating strips (14) are all vertically and equidistantly arranged.