Medical rectifying still easy to clean

Abstract

The utility model discloses a medical rectifying still easy to clean, and relates to the technical field of rectifying still. The bottom of the tank body is provided with a support frame, the upper surface of the tank body is provided with a feeding pipeline and a discharging pipeline which are communicated with the interior of the tank body, the tank body is internally provided with a stirring assembly, the stirring assembly is provided with a cleaning assembly, the cleaning assembly is provided with an opening and closing assembly, and the lower end of the opening and closing assembly is provided with a conveying pipeline. The stirring assembly drives the cleaning assembly to rotate, so that the opening and closing assembly also rotates, the opening and closing assembly generates centrifugal force through rotation to enable the shape of the opening and closing assembly to change, the conveying assembly can convey cleaning water into the cleaning assembly, a conveying pipeline does not need to be opened manually, operation can be simplified, and the cleaning efficiency is improved. And under the driving of the stirring assembly, the cleaning assembly rotates to clean the inner wall of the tank body, so that the inner wall of the tank body can be integrally cleaned, and no residual liquid is left.

Description

Technical Field

[0001] The utility model belongs to the technical field of rectifying stills, and more specifically, particularly relates to an easily-cleaned rectifying still for medicine use. Background Art

[0002] A rectifying still is a commonly used laboratory device, mainly used for the separation and purification of liquid mixtures. The rectifying still utilizes the different boiling points of substances. Through heating and cooling methods, different components in the liquid mixture are vaporized and condensed respectively, so as to achieve the purpose of separation and purification. It is widely used in experimental research in fields such as chemistry, medicine, and food. For example, in chemical synthesis, it is used for separating and purifying reaction products; in drug preparation, it is used for extracting and purifying active ingredients; in the food industry, it is used for separating and concentrating natural extracts, etc.

[0003] In the Chinese Patent Network CN220676800U, there is disclosed an easily-cleaned rectifying still, which includes a frame assembly, a tank body, a cover body, a stirring assembly and a cleaning mechanism. The cleaning mechanism includes a sliding ring, multiple groups of spraying assemblies, a shunt box, a water inlet hopper, a driving disk, a driving motor and a rotating wheel. The driving motor is arranged on the outer side of the tank body, the rotating wheel is fixedly connected with the driving motor, the sliding ring is movably connected with the tank body, the driving disk is fixedly connected with the sliding ring, the driving disk cooperates with the rotating wheel, multiple groups of spraying assemblies are all arranged above the sliding ring, the shunt box is arranged above the multiple spraying assemblies, the water inlet hopper is fixedly connected with the shunt box, and the cover body is arranged above the driving disk.

[0004] In the prior art, a spray head is used to spray cleaning water onto the inner wall to clean it, but this only performs local cleaning on the areas that the spray head can reach, and cannot clean the entire inner wall of the still body, resulting in an unsatisfactory cleaning effect, so that residual liquid still remains on its inner wall, and it may still cause secondary pollution to subsequent reactions.

[0005] Regarding the problems in the related art, no effective solution has been proposed yet. Summary of the Utility Model

[0006] Regarding the problems in the related art, the utility model proposes an easily-cleaned rectifying still for medicine use to overcome the above-mentioned technical problems existing in the prior related art.

[0007] To solve the above-mentioned technical problems, the utility model is realized through the following technical solutions:

[0008] The utility model relates to an easy-to-clean rectifying still for medical use, which comprises a tank body. A support frame is installed at the bottom of the tank body. A feed pipe and a discharge pipe which are communicated with the inside of the tank body are installed on the upper surface of the tank body. A stirring assembly is installed in the tank body. A cleaning assembly is installed on the stirring assembly. An opening and closing assembly is installed on the cleaning assembly. A conveying pipe is installed at the lower end of the opening and closing assembly;

[0009] The feed port is used for filling the stock solution into the tank body. The stirring assembly is used for stirring the mixed liquid inside the tank body to make it fuse and react. Moreover, the stirring assembly can drive the cleaning assembly to rotate. When the stirring assembly rotates counterclockwise, the shape of the opening and closing assembly will be changed, so that the cleaning water can enter the cleaning assembly from the conveying pipe, and the cleaning assembly can be driven by the stirring assembly to clean the inner wall of the tank body.

[0010] Furthermore, the stirring assembly comprises a motor. The motor is installed at the central position of the upper surface of the tank body. A rotating shaft is installed at the center of the motor. The lower end of the rotating shaft penetrates through the tank body and extends into its interior. A stirring frame is sleeved on the rotating shaft.

[0011] Furthermore, the cleaning assembly comprises a connecting pipe. The connecting pipe is fixedly installed at the lower end of the rotating shaft. The lower end of the connecting pipe penetrates through the tank body and extends outwards. An L-shaped pipe which is communicated with the inside of the connecting pipe is installed on the connecting pipe. A high-pressure spray head which is communicated with the inside of the L-shaped pipe is installed at the upper end of the L-shaped pipe. A plurality of brushes are installed on one side surface of the L-shaped pipe. All the brushes can contact with the inner wall of the tank body.

[0012] Furthermore, the opening and closing assembly comprises an opening and closing pipe. The opening and closing pipe is installed at the lower end of the connecting pipe. The opening and closing pipe is communicated with the inside of the connecting pipe. A fixing plate is installed on the inner wall of the opening and closing pipe. Through holes are symmetrically formed in the fixing plate. A fixing column is installed at the center of the fixing plate. A torsion spring is installed around the fixing column. An opening and closing plate is installed at one end of the torsion spring. The lower surface of the opening and closing plate is closely attached to the upper surface of the fixing plate. The fixing plate can close the through holes. Baffles are symmetrically installed on the fixing plate. One side of each baffle contacts with the opening and closing plate, and it is ensured that the opening and closing plate rotates in one direction.

[0013] Furthermore, the lower end of the opening and closing pipe is rotatably installed on the conveying pipe. A fixing frame is installed at the bottom of the tank body. The conveying pipe penetrates and is fixed on the fixing frame.

[0014] Furthermore, a water outlet pipe which is communicated with the inside of the tank body is installed at the bottom of the tank body. A valve is installed on the water outlet pipe.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model drives its cleaning component to rotate through the stirring component, so that its opening and closing component also rotates. Thus, the opening and closing component generates centrifugal force through rotation to change its shape, enabling the conveying component to convey cleaning water into the cleaning component, so as to achieve that there is no need for manual driving to open the conveying pipeline, which can simplify the operation and is relatively convenient. Then, driven by the stirring component, the cleaning component rotates to clean the inner wall of the tank, so as to achieve overall cleaning of the inner wall of the tank, efficiently complete the cleaning operation, and also ensure perfect cleaning effect without residual liquid remaining.

[0017] 2. The utility model drives its opening and closing pipeline to rotate by the counterclockwise rotation of the motor. Under the centrifugal force generated by the rotation, the opening and closing plate rotates and no longer closes the hole, enabling the cleaning water to be conveyed into the connecting pipeline in the conveying pipeline. Thus, the inner wall is rinsed with a high-pressure nozzle, and under the action of the brush, the inner wall is thoroughly cleaned without residual liquid remaining. When the motor stops rotating and the opening and closing pipeline no longer rotates, the opening and closing plate will close the hole again under the action of the torsion spring, so that the cleaning water can no longer be conveyed into the connecting pipeline, so as to achieve that there is no need for manual driving to open the conveying pipeline and simplify the operation.

[0018] Of course, it is not necessary for any product implementing the utility model to achieve all the above advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is the three-dimensional structure schematic diagram of the utility model;

[0021] Figure 2 is the second three-dimensional structure schematic diagram of the utility model;

[0022] Figure 3 is the Figure 2 partial enlarged structure schematic diagram at A of the utility model;

[0023] Figure 4 is the three-dimensional sectional structure schematic diagram of the utility model;

[0024] Figure 5 is the structure schematic diagram of the stirring component of the utility model;

[0025] Figure 6 is theFigure 5 Schematic diagram of the enlarged structure at B in the [specific context];

[0026] Figure 7 Schematic diagram of the opening and closing assembly structure of the present utility model;

[0027] Figure 8 Structure display diagram of the holes on the fixing plate of the present utility model.

[0028] In the attached drawings, the list of components represented by each reference numeral is as follows:

[0029] 1. Tank body; 2. Support frame; 3. Feed pipe; 4. Discharge pipe; 5. Stirring assembly; 6. Cleaning assembly; 7. Opening and closing assembly; 8. Delivery pipe; 9. Motor; 10. Rotating shaft; 11. Stirring frame; 12. Connecting pipe; 13. L-shaped pipe; 14. High-pressure nozzle; 15. Brush; 16. Opening and closing pipe; 17. Fixing plate; 18. Hole; 19. Fixed column; 20. Torsion spring; 21. Opening and closing plate; 22. Baffle; 23. Fixed frame; 24. Water outlet pipe; 25. Valve. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the utility model will be clearly and completely described in conjunction with the attached drawings in the embodiments of the utility model. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the utility model.

[0031] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc. indicating the orientation or position relationship are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the utility model.

[0032] Please refer to Figures 1-8 As shown, the present utility model is a medicament-use rectifying still that is easy to clean, including a tank body 1. A support frame 2 is installed at the bottom of the tank body 1. A feed pipe 3 and a discharge pipe 4 that are internally connected to the tank body 1 are installed on the upper surface of the tank body 1. A stirring assembly 5 is installed inside the tank body 1. A cleaning assembly 6 is installed on the stirring assembly 5. An opening and closing assembly 7 is installed on the cleaning assembly 6. A delivery pipe 8 is installed at the lower end of the opening and closing assembly 7;

[0033] The feed inlet is used to pour the stock solution into the tank body 1, and the stirring assembly 5 is used to stir the mixed liquid inside the tank body 1 to make it fuse and react. Moreover, the stirring assembly 5 can drive the cleaning assembly 6 to rotate. When the stirring assembly 5 rotates counterclockwise, it will change the shape of the opening and closing assembly 7, so that the cleaning water can enter the cleaning assembly 6 from the conveying pipeline 8, so as to drive the cleaning assembly 6 by the stirring assembly 5 to clean the inner wall of the tank body 1.

[0034] In actual use, the stock solution is conveyed into the tank body 1 through the feed inlet, and then the stirring assembly 5 is driven to rotate clockwise, so as to stir and mix the stock solution, enabling it to react more quickly. The rectified steam is conveyed to the outside through the discharge port. When the inner wall of the tank body 1 needs to be cleaned, the stirring assembly 5 can be driven to rotate counterclockwise, so that it drives the cleaning assembly 6 to rotate. As a result, the opening and closing assembly 7 changes its shape under the centrifugal force generated by the rotation, making the cleaning assembly 6 communicate with the conveying pipeline 8, so that the cleaning water is sprayed onto the inner wall of the tank body 1 through the cleaning assembly 6. Furthermore, driven by the stirring assembly 5, the cleaning assembly 6 can clean the entire inner wall of the tank body 1.

[0035] In the utility model, the stirring assembly 5 drives the cleaning assembly 6 to rotate, so that the opening and closing assembly 7 also rotates. As a result, the opening and closing assembly 7 changes its shape due to the centrifugal force generated by the rotation, enabling the conveying assembly to convey the cleaning water into the cleaning assembly 6. Thus, it is no longer necessary to manually drive to open the conveying pipeline 8, which can simplify the operation and is relatively convenient. Then, driven by the stirring assembly 5, the cleaning assembly 6 rotates to clean the inner wall of the tank body 1, so as to achieve the overall cleaning of the inner wall of the tank body 1, efficiently complete the cleaning operation, and ensure perfect cleaning effect without any residual liquid remaining.

[0036] In one embodiment, for the above-mentioned stirring assembly 5, the stirring assembly 5 includes a motor 9, the motor 9 is installed at the central axis position on the upper surface of the tank body 1, a rotating shaft 10 is installed at the central axis of the motor 9, the lower end of the rotating shaft 10 penetrates the tank body 1 and extends into its interior, and a stirring frame 11 is sleeved on the rotating shaft 10.

[0037] By driving the motor 9, it drives the stirring frame 11 to rotate clockwise through the rotating shaft 10, so as to stir and mix the stock solution in the tank body 1, enabling it to react rapidly, complete the rectification process, and improve work efficiency.

[0038] In one embodiment, for the above-mentioned cleaning component 6, the cleaning component 6 includes a connecting pipe 12, the connecting pipe 12 is fixedly installed at the lower end of the rotating shaft 10, the lower end of the connecting pipe 12 penetrates through the tank body 1 and extends to the outside, an L-shaped pipe 13 communicating with the inside thereof is installed on the connecting pipe 12, a high-pressure spray head 14 communicating with the inside thereof is installed at the upper end of the L-shaped pipe 13, a plurality of brushes 15 are installed on one side surface of the L-shaped pipe 13, and the brushes 15 can all contact the inner wall of the tank body 1.

[0039] The cleaning water can be conveyed into the connecting pipe 12 through the opening and closing component 7, so that the cleaning water is conveyed into the L-shaped pipe 13, and then the inner wall is rinsed through the high-pressure spray head 14. By rotating the driving motor 9 counterclockwise, the rotating shaft 10 can drive the connecting pipe 12 to rotate, drive the L-shaped pipe 13 to rotate around the central axis of the tank body 1, and thus clean the inner wall of the tank body 1 through the brushes 15, so as to achieve efficient cleaning of the inner wall of the tank body 1, and it is relatively automated, and can effectively avoid the mixing of residual liquid and the next batch of stock solution.

[0040] In one embodiment, for the above-mentioned opening and closing component 7, the opening and closing component 7 includes an opening and closing pipe 16, the opening and closing pipe 16 is installed at the lower end of the connecting pipe 12, the opening and closing pipe 16 communicates with the inside of the connecting pipe 12, a fixing plate 17 is installed on the inner wall of the opening and closing pipe 16, through holes 18 are symmetrically formed in the fixing plate 17, a fixing column 19 is installed at the center of the fixing plate 17, a torsion spring 20 is installed around the fixing column 19, one end of the torsion spring 20 is installed with an opening and closing plate 21, the lower surface of the opening and closing plate 21 is closely attached to the upper surface of the fixing plate 17, the fixing plate 17 can close the through holes 18, baffles 22 are symmetrically installed on the fixing plate 17, one side of each baffle 22 contacts the opening and closing plate 21, and it is ensured that the opening and closing plate 21 rotates in one direction.

[0041] When it is necessary to clean its inner wall, the motor 9 can be driven to rotate counterclockwise, so that its rotating shaft 10 drives its connecting pipe 12 to rotate, thereby driving its opening and closing pipe 16 to rotate. Under the centrifugal force generated by the rotation, the opening and closing plate 21 rotates, no longer closing the hole 18, so that the cleaning water can be transported into the connecting pipe 12 through the transport pipe 8, and then the inner wall can be rinsed with the high-pressure nozzle 14. Under the action of the brush 15, the inner wall is thoroughly cleaned without residual liquid remaining. When the motor 9 stops rotating and the opening and closing pipe 16 stops rotating, the opening and closing plate 21 will close the hole 18 again under the action of the torsion spring 20, so that the cleaning water can no longer be transported into the connecting pipe 12, so as to achieve the purpose of not requiring manual driving to open the transport pipe 8, simplifying the operation, and the baffle 22 can prevent it from driving the opening and closing plate 21 to rotate when the rotating shaft 10 rotates clockwise.

[0042] In one embodiment, for the above-mentioned opening and closing pipe 16, the lower end of the opening and closing pipe 16 is rotatably installed on the transport pipe 8, a fixing frame 23 is installed at the bottom of the tank body 1, and the transport pipe 8 is fixedly installed through the fixing frame 23.

[0043] By rotatably installing the opening and closing pipe 16 on the transport pipe 8, the opening and closing pipe 16 can rotate driven by the motor 9, thereby changing the shape of the opening and closing plate 21. The fixing frame 23 can fix the transport pipe 8 to increase firmness.

[0044] In one embodiment, for the above-mentioned tank body 1, a water outlet pipe 24 communicating with its interior is installed at the bottom of the tank body 1, and a valve 25 is installed on the water outlet pipe 24.

[0045] When the cleaning operation is completed and the internal waste water needs to be discharged, the valve 25 can be opened so that the waste water can be discharged outside through the water outlet pipe 24. And under the action of the valve 25, the sealing performance of the tank body 1 can also be ensured during the rectification operation, so that the internal stock solution will not flow out.

[0046] In summary, by means of the above technical solution of the present utility model, the stock solution is conveyed into the tank body 1 through the feed inlet, and then the motor 9 is driven to drive the stirring frame 11 to rotate clockwise through the rotating shaft 10, so as to stir and mix the stock solution in the tank body 1, enabling a rapid reaction to occur, completing the rectification process, and improving work efficiency. When it is necessary to clean the inner wall, the motor 9 can be driven to rotate counterclockwise, so that the rotating shaft 10 can drive the connecting pipe 12 to rotate, driving the L-shaped pipe 13 to rotate around the central axis of the tank body 1, thereby cleaning the inner wall of the tank body 1 through the brush 15. When the connecting pipe 12 rotates, it may drive the opening and closing pipe 16 to rotate. Under the centrifugal force generated by the rotation, the opening and closing plate 21 rotates, no longer closing the hole 18, so that the cleaning water can be conveyed into the connecting pipe 12 through the conveying pipe 8, and then the inner wall is rinsed with the high-pressure nozzle 14. Under the action of the brush 15, the inner wall is thoroughly cleaned without residual liquid. When the motor 9 stops rotating and the opening and closing pipe 16 stops rotating, the opening and closing plate 21 will close the hole 18 again under the action of the torsion spring 20, so that the cleaning water can no longer be conveyed into the connecting pipe 12, achieving the effect of not requiring manual driving to open the conveying pipe 8, simplifying the operation, and the baffle 22 can prevent the opening and closing plate 21 from rotating when the rotating shaft 10 rotates clockwise. When the cleaning operation is completed and the internal wastewater needs to be discharged, the valve 25 can be opened so that the wastewater can be discharged outside through the water outlet pipe 24, and the valve 25 can also ensure the sealing performance of the tank body 1 during the rectification operation, preventing the internal stock solution from flowing out.

[0047] Through the above technical solutions: 1. The stirring assembly 5 drives the cleaning assembly 6 to rotate, causing the opening and closing assembly 7 to also rotate. As a result, the opening and closing assembly 7 generates centrifugal force through rotation, causing its shape to change, enabling the conveying assembly to convey cleaning water into the cleaning assembly 6, thereby eliminating the need for manual driving to open the conveying pipeline 8, simplifying the operation, and being relatively convenient. Then, driven by the stirring assembly 5, the cleaning assembly 6 rotates to clean the inner wall of the tank body 1, achieving overall cleaning of the inner wall of the tank body 1, efficiently completing the cleaning operation, and ensuring a perfect cleaning effect without any residual liquid remaining; 2. The motor 9 rotates counterclockwise to drive the opening and closing pipeline 16 to rotate. Under the centrifugal force generated by the rotation, the opening and closing plate 21 rotates, no longer closing the hole 18, allowing the cleaning water to be conveyed into the connecting pipeline 12 through the conveying pipeline 8. Thus, the high-pressure nozzle 14 is used to wash the inner wall, and under the action of the brush 15, the inner wall is thoroughly cleaned without any residual liquid. When the motor 9 stops rotating and the opening and closing pipeline 16 stops rotating, the opening and closing plate 21 will close the hole 18 again under the action of the torsion spring 20, preventing the cleaning water from being conveyed into the connecting pipeline 12, so as to eliminate the need for manual driving to open the conveying pipeline 8 and simplify the operation.

[0048] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0049] The preferred embodiments of the utility model disclosed above are only used to assist in explaining the utility model. The preferred embodiments do not elaborate on all the details, nor do they limit the utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the utility model, so that those skilled in the relevant technical field can understand and utilize the utility model well. The utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A distillation kettle for medicine that is easy to clean, comprising a tank body (1), characterized in that, A support frame (2) is installed at the bottom of the tank body (1). An inlet pipe (3) and an outlet pipe (4) that are internally connected to the tank body (1) are installed on the upper surface of the tank body (1). A stirring assembly (5) is installed inside the tank body (1). A cleaning assembly (6) is installed on the stirring assembly (5). An opening and closing assembly (7) is installed on the cleaning assembly (6). A conveying pipe (8) is installed at the lower end of the opening and closing assembly (7). The inlet is used to pour the stock solution into the tank body (1). The stirring assembly (5) is used to stir the mixed liquid inside the tank body (1) to make it fuse and react. And the stirring assembly (5) can drive the cleaning assembly (6) to rotate. When the stirring assembly (5) rotates counterclockwise, it will change the form of the opening and closing assembly (7), so that the cleaning water can enter the cleaning assembly (6) from the conveying pipe (8), so as to drive the cleaning assembly (6) by the stirring assembly (5) to clean the inner wall of the tank body (1).

2. The easy-to-clean rectifying still for pharmaceutical use according to claim 1, wherein, The stirring assembly (5) includes a motor (9). The motor (9) is installed at the central position of the upper surface of the tank body (1). A rotating shaft (10) is installed at the axis of the motor (9). The lower end of the rotating shaft (10) penetrates the tank body (1) and extends into its interior. A stirring frame (11) is sleeved on the rotating shaft (10).

3. The easy-to-clean rectification still for medicine according to claim 2, wherein The cleaning assembly (6) includes a connecting pipe (12). The connecting pipe (12) is fixedly installed at the lower end of the rotating shaft (10). The lower end of the connecting pipe (12) penetrates the tank body (1) and extends outwards. An L-shaped pipe (13) that is internally connected to the connecting pipe (12) is installed on the connecting pipe (12). A high-pressure spray head (14) that is internally connected to the L-shaped pipe (13) is installed at the upper end of the L-shaped pipe (13). A plurality of brushes (15) are installed on one side surface of the L-shaped pipe (13). The brushes (15) can all contact the inner wall of the tank body (1).

4. A rectifying still for pharmaceutical use that is easy to clean according to claim 3, characterized in that, The opening and closing assembly (7) includes an opening and closing pipe (16). The opening and closing pipe (16) is installed at the lower end of the connecting pipe (12). The opening and closing pipe (16) is internally connected to the connecting pipe (12). A fixing plate (17) is installed on the inner wall of the opening and closing pipe (16). Through holes (18) are symmetrically formed on the fixing plate (17). A fixing column (19) is installed at the axis of the fixing plate (17). A torsion spring (20) is installed around the fixing column (19). One end of the torsion spring (20) is installed with an opening and closing plate (21). The lower surface of the opening and closing plate (21) is closely attached to the upper surface of the fixing plate (17). The fixing plate (17) can close the through holes (18). Baffles (22) are symmetrically installed on the fixing plate (17). One side of each baffle (22) contacts the opening and closing plate (21) and satisfies that the opening and closing plate (21) rotates in one direction.

5. A distillation kettle for medicine that is easy to clean according to claim 4, characterized in that, The lower end of the opening and closing pipe (16) is rotatably installed on the conveying pipe (8). A fixing frame (23) is installed at the bottom of the tank body (1). The conveying pipe (8) is fixedly installed through the fixing frame (23).

6. The easy-to-clean rectifying still for pharmaceutical use according to claim 5, characterized in that A water outlet pipe (24) communicating with the inside is installed at the bottom of the tank body (1), and a valve (25) is installed on the water outlet pipe (24).

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