Disinfectant preparation device

Abstract

The utility model belongs to the technical field of disinfectant preparation devices, and particularly relates to a disinfectant preparation device which comprises a preparation box and a water outlet formed in the bottom end of the preparation box, and further comprises a cleaning assembly arranged on the surface of the preparation box, and the cleaning assembly comprises an installation base arranged on the surface of the preparation box. The configuration box is mounted on the surface of the mounting base, an inner cylinder is arranged on the surface of the configuration box, a rotating shaft is fixedly connected to the end, away from the configuration box, of the inner cylinder, and six groups of stirring rods are symmetrically and fixedly connected to the surface of the rotating shaft; according to the device, residual disinfectant on the inner wall of the device can be cleaned in time, so that pollution to other configuration liquid or the environment in the next use process is avoided, the accuracy of the configuration concentration of the disinfectant can be ensured, meanwhile, the probability that the device is corroded and damaged by residues can be reduced, and the service life of the device is prolonged.

Description

Technical Field

[0001] This utility model belongs to the technical field of disinfectant preparation device, specifically relating to a disinfectant preparation device. Background Technology

[0002] Different types of disinfectants are suitable for different disinfection scenarios. For example, chlorine-containing disinfectants destroy the structure of pathogens through oxidation and are mainly suitable for disinfecting object surfaces and clothing. Alcohol-based disinfectants achieve bactericidal effects by dissolving the lipid membrane of bacteria and are often used for skin and medical device disinfection. Therefore, the configurator can help users adjust the effective ingredients of the disinfectant according to specific needs to ensure disinfection effectiveness.

[0003] According to the publicly available announcement (CN220677470U), a disinfectant preparation device is disclosed. This technology discloses "a stirring device with an outlet for residue and waste liquid at the bottom, an inlet on the upper side wall, and an outlet for supernatant on the lower side wall, the outlet for supernatant being a certain distance away from the bottom of the stirring device; a guide plate, which is U-shaped and fixedly connected to the top of the stirring device, and gradually slopes downward from the top to the bottom, with the two straight parts of the guide plate facing upward, etc., which has the technical effect of preventing disinfectant powder from floating up."

[0004] In this existing design, after the disinfectant solution is prepared, the disinfectant solution adhering to the inner wall of the equipment cannot be cleaned in time. Since the effective components of the disinfectant solution required for different scenarios are different, if the residue on the inner wall of the equipment is not cleaned in time, the residual disinfectant solution will mix with the newly prepared disinfectant solution, which may cause a chemical reaction, produce toxic substances or reduce the disinfection effect, or even endanger life safety. It may also cause the inner surface of the equipment to rust, causing irreversible damage to the equipment.

[0005] Therefore, a disinfectant dispenser was designed to solve the above problems. Utility Model Content

[0006] To address the problems mentioned in the background section, this invention provides a disinfectant preparation device. This device allows for the timely cleaning of residual disinfectant from the inner wall of the equipment, preventing contamination of other prepared solutions or the environment during subsequent use. It also ensures the accuracy of the disinfectant concentration and reduces the probability of residue corrosion and damage, thus extending the equipment's lifespan.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a disinfectant dispenser, comprising a dispenser box and an outlet disposed at the bottom of the dispenser box, and further comprising a cleaning component disposed on the surface of the dispenser box;

[0008] The cleaning assembly includes a mounting base disposed on the surface of the configuration box, the configuration box being mounted on the surface of the mounting base, an inner cylinder being disposed on the surface of the configuration box, a rotating shaft being fixedly connected to the end of the inner cylinder away from the configuration box, six sets of stirring rods being symmetrically fixedly connected to the surface of the rotating shaft, an irregular rod A being disposed at the end of the rotating shaft away from the inner cylinder, a base plate being fixedly connected to the end of the irregular rod A away from the rotating shaft, scrapers being symmetrically fixedly connected to the surface of the base plate, and nozzles being symmetrically mounted on the inner surface of the configuration box.

[0009] In a preferred embodiment of the disinfectant dispenser of this utility model, the shape of the scraper matches the inner wall of the dispenser box.

[0010] As a preferred embodiment of the disinfectant dispenser of this utility model, the surface of the dispenser box is provided with a groove that cooperates with the base plate.

[0011] As a preferred embodiment of the disinfectant dispenser of this utility model, the surface of the scraper is rotatably connected with two sets of ball bearings, and the surface of the dispenser box is provided with a limiting groove that cooperates with the ball bearings.

[0012] As a preferred embodiment of the disinfectant dispenser of this utility model, a silicone plate is fixedly connected to the side of the scraper near the dispenser box.

[0013] As a preferred embodiment of the disinfectant dispenser of this utility model, it further includes a stirring assembly disposed on the surface of the dispenser box;

[0014] The stirring assembly includes a shaped rod B disposed on the surface of the inner cylinder. The surface of the inner cylinder has a shaped groove B that mates with the shaped rod B. The shaped rod B is slidably connected to the inner cylinder through the shaped groove B. A sleeve is slidably connected to the surface of the inner cylinder. The sleeve is fixedly connected to the surface of the configuration box. A retaining post is fixedly connected to the surface of the inner cylinder. The surface of the sleeve has an annular track groove that mates with the retaining post. The surface of the rotating shaft has a shaped groove A that mates with the shaped rod A.

[0015] In a preferred embodiment of the disinfectant dispenser of this utility model, both the irregular rod A and the irregular rod B are regular pentagons.

[0016] As a preferred embodiment of the disinfectant dispenser of this utility model, the surface of the rotating shaft is symmetrically provided with a plurality of drainage holes, and the drainage holes are connected to the irregular groove A.

[0017] As a preferred embodiment of the disinfectant dispenser of this utility model, a servo motor is mounted on the surface of the dispenser box, and the output shaft of the servo motor is fixedly connected to the irregular rod B.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: The addition of a cleaning component allows for timely cleaning of residual disinfectant on the inner wall of the equipment, thus preventing contamination of other prepared solutions or the environment during subsequent use. It also ensures the accuracy of the disinfectant concentration and reduces the probability of corrosion and damage to the equipment from residues, extending its service life. Furthermore, the addition of a stirring component accelerates the dissolution of the disinfectant in the solvent, ensuring uniform distribution of various components and improving the uniformity of the disinfectant mixture. This prevents localized high or low concentrations and ensures consistent disinfection results. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0021] Figure 2 This is a schematic diagram of the inner cylinder structure in this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the rotating shaft in this utility model;

[0023] Figure 4 This is a schematic diagram of the silicone plate in this utility model;

[0024] Figure 5 In this utility model Figure 4 Enlarged structural diagram at point B;

[0025] Figure 6 This is a schematic diagram of the annular track groove structure in this utility model;

[0026] Figure 7 In this utility model Figure 3 Enlarged structural diagram at point A;

[0027] In the picture:

[0028] 1. Configuration box; 11. Water outlet;

[0029] 2. Cleaning components; 21. Mounting base; 22. Inner cylinder; 23. Rotating shaft; 24. Stirring rod; 25. Irregular rod A; 26. Base plate; 27. Scraper; 28. Nozzle; 29. ​​Slide groove; 210. Ball bearing; 211. Limiting groove; 212. Silicone plate;

[0030] 3. Stirring assembly; 31. Irregular rod B; 32. Irregular groove B; 33. Sleeve; 34. Clamping post; 35. Annular track groove; 36. Irregular groove A; 37. Drain hole; 38. Servo motor. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Example 1

[0033] like Figure 1 As shown;

[0034] A disinfectant dispenser includes a dispenser box 1 and an outlet 11 located at the bottom of the dispenser box 1.

[0035] In this implementation plan: In the prior art, the preparation box 1 is used to complete the preparation of disinfectant. For the specific working principle of the preparation box 1, please refer to the technology disclosed in "CN220677470U discloses a disinfectant preparation device". This technology discloses that "by spraying water through the water spraying component, the disinfectant powder can be prevented from floating, and the water sprayed by the water spraying component has a certain impact force, which can prevent the disinfectant powder from adhering to the guide plate. Setting the guide plate in a U-shape can prevent the sprayed water from splashing". However, in this prior art design, after the disinfectant is prepared, the disinfectant adhering to the inner wall of the equipment cannot be cleaned in time. Since the effective components of the disinfectant required for different scenarios are different, if the residue on the inner wall of the equipment is not cleaned in time, the residual disinfectant will mix with the newly prepared disinfectant, which may cause a chemical reaction, produce toxic substances or reduce the disinfection effect, or even endanger life safety. It may also cause irreversible damage to the equipment by causing corrosion of the inner surface of the equipment. In combination, this problem is obviously a real and difficult problem to solve. Therefore, in order to solve this technical problem, a cleaning component 2 and a stirring component 3 are added to this application.

[0036] Furthermore:

[0037] like Figures 1 to 3 As shown:

[0038] In conjunction with the above: a disinfectant dispenser, further comprising a cleaning component 2 disposed on the surface of the dispenser box 1;

[0039] The cleaning component 2 includes a mounting base 21 disposed on the surface of the configuration box 1. The configuration box 1 is mounted on the surface of the mounting base 21. An inner cylinder 22 is disposed on the surface of the configuration box 1. A rotating shaft 23 is fixedly connected to the end of the inner cylinder 22 away from the configuration box 1. Six sets of stirring rods 24 are symmetrically fixedly connected to the surface of the rotating shaft 23. An irregularly shaped rod A25 is disposed at the end of the rotating shaft 23 away from the inner cylinder 22. A base plate 26 is fixedly connected to the end of the irregularly shaped rod A25 away from the rotating shaft 23. Scrapers 27 are symmetrically fixedly connected to the surface of the base plate 26. The shape of the scraper 27 matches the inner sidewall of the configuration box 1. Spray nozzles 28 are symmetrically mounted on the inner surface of the configuration box 1.

[0040] In this implementation plan: When staff need to clean the residual disinfectant on the inner wall of the equipment, they first operate the nozzle 28 to spray the cleaning solution (the cleaning solution can be tap water, or the type of disinfectant can be selected). While the nozzle 28 sprays the cleaning solution onto the inner wall of the preparation tank 1, the staff operates the inner cylinder 22 to rotate. The rotation of the inner cylinder 22 drives the rotating shaft 23 to rotate, which in turn drives the base plate 26 to rotate inside the preparation tank 1 via the shaped rod A25. This, in turn, drives the scraper 27 to rotate inside the preparation tank 1. Because the shape of the scraper 27 matches the inner wall of the preparation tank 1, it... During the rotation of the scraper 27, water droplets on the inner wall of the preparation tank 1 are collected. After collection, the water droplets flow out of the preparation tank 1 through the outlet 11. The cleaning fluid treats the residual disinfectant on the inner wall of the preparation tank 1. The scraper 27 collects the water droplets on the inner wall of the preparation tank 1 and makes them flow out of the preparation tank 1 to clean the inner wall of the preparation tank 1. At the same time, the rotation of the rotating shaft 23 can drive the stirring rod 24 to rotate. Therefore, during the preparation of disinfectant, both the scraper 27 and the stirring rod 24 can stir the disinfectant, thereby speeding up the mixing speed of the disinfectant and improving the efficiency of equipment preparation.

[0041] It should be noted that nozzle 28 is connected to a water pipe and water tank for operation.

[0042] Furthermore:

[0043] like Figure 3 As shown:

[0044] In an optional embodiment, the surface of the configuration box 1 is provided with a groove 29 that mates with the base plate 26.

[0045] In this embodiment, when the base plate 26 rotates inside the configuration box 1, it can be made to rotate inside the configuration box 1 by means of the slide groove 29, which can limit the rotation range of the base plate 26, guide the movement trajectory of the base plate 26, and thus prevent the base plate 26 from leaving the configuration box 1.

[0046] Furthermore:

[0047] likeFigure 4 As shown:

[0048] In an optional embodiment, two sets of balls 210 are rotatably connected to the surface of the scraper 27, and a limiting groove 211 that cooperates with the balls 210 is provided on the surface of the configuration box 1.

[0049] In this embodiment: when the scraper 27 slides on the surface of the configuration box 1, the scraper 27 drives the ball 210 to roll on the surface of the configuration box 1 through the limiting groove 211. The ball 210 rotates on the surface of the scraper 27, changing the sliding friction between the scraper 27 and the configuration box 1 into rolling friction, reducing the friction between the scraper 27 and the configuration box 1, and making the scraper 27 move more smoothly.

[0050] Furthermore:

[0051] like Figure 3 and Figure 4 As shown:

[0052] In an optional embodiment, a silicone plate 212 is fixedly connected to the side of the scraper 27 near the configuration box 1.

[0053] In this embodiment: the silicone plate 212 is made of silicone material. Because it is soft and elastic, it allows the scraper 27 to fit well against the inner wall of the configuration box 1. This can improve the scraping efficiency and prevent water leakage, making the inner wall of the configuration box 1 cleaner. The reduction of water droplets also helps the moisture inside the configuration box 1 to evaporate quickly, avoiding the long-term damp environment inside the configuration box 1 that could cause bacterial growth.

[0054] Furthermore:

[0055] like Figures 4 to 7 As shown:

[0056] In an optional embodiment, a stirring assembly 3 is also included, disposed on the surface of the configuration tank 1;

[0057] The stirring assembly 3 includes a shaped rod B31 disposed on the surface of the inner cylinder 22. The surface of the inner cylinder 22 is provided with a shaped groove B32 that mates with the shaped rod B31. The shaped rod B31 is slidably connected to the inner cylinder 22 through the shaped groove B32. A sleeve 33 is slidably connected to the surface of the inner cylinder 22. The sleeve 33 is fixedly connected to the surface of the configuration box 1. A retaining post 34 is fixedly connected to the surface of the inner cylinder 22. The surface of the sleeve 33 is provided with an annular track groove 35 that mates with the retaining post 34. The surface of the rotating shaft 23 is provided with a shaped groove A36 that mates with the shaped rod A25.

[0058] In this implementation scheme: Since all the irregular rods B31 are regular pentagons, when the irregular rod B31 rotates, it drives the inner cylinder 22 to rotate. The rotation of the inner cylinder 22 drives the locking pin 34 to slide along the annular track groove 35 on the surface of the sleeve 33. Because the annular track groove 35 has a certain height difference, when the locking pin 34 slides in the annular track groove 35, the inner cylinder 22 rotates on the inner surface of the sleeve 33 along the movement trajectory of the locking pin 34 while also moving up and down. At this time, the inner cylinder 22 slides on the surface of the irregular rod B31 through the irregular groove B32. The pentagonal design of the irregular rod B31 allows the irregular rod B31 to drive the inner cylinder 22 to rotate while also allowing the inner cylinder 22 to slide on the surface of the irregular rod B31. The movement trajectory of the inner cylinder 22 is limited and guided, thereby enabling the inner cylinder 22 to drive the rotating shaft 23 and the stirring rod 24 fixed on its surface to rotate while also moving up and down. While the rotating shaft 23 moves up and down, the irregular rod A25 slides on the surface of the rotating shaft 23 through the irregular groove A36. The pentagonal design of the irregular rod A25 allows the rotating shaft 23 to drive the irregular rod A25 to rotate while also allowing the irregular rod A25 to slide on the surface of the rotating shaft 23, thus limiting and guiding the movement trajectory of the irregular rod A25. This design can also accelerate the dissolution rate of the disinfectant in the solvent, allowing various components in the disinfectant to be evenly distributed, improving the uniformity of the disinfectant mixture, avoiding excessively high or low local concentrations, and ensuring the consistency of the disinfection effect.

[0059] Furthermore:

[0060] like Figures 1 to 4 As shown:

[0061] In an optional embodiment, a plurality of drainage holes 37 are symmetrically formed on the surface of the rotating shaft 23, and the drainage holes 37 are connected to the irregular groove A36.

[0062] In this embodiment: when the irregular rod A25 slides on the inner surface of the rotating shaft 23 through the irregular groove A36, the drain hole 37 can connect the internal space of the rotating shaft 23 with the internal space of the configuration box 1, so as to prevent the air inside the irregular groove A36 from not being able to be discharged when the irregular rod A25 slides into the rotating shaft 23 when the configuration box 1 is full of liquid, thus affecting the normal operation of the equipment. The drain hole 37 can also spray the disinfectant inside the irregular groove A36 out from the drain hole 37 when the irregular rod A25 slides into the rotating shaft 23 when the configuration box 1 is full of liquid, so that the disinfectant and solvent can be more fully mixed.

[0063] Furthermore:

[0064] like Figure 4 As shown:

[0065] In an optional embodiment, a servo motor 38 is mounted on the surface of the configuration box 1, and the output shaft of the servo motor 38 is fixedly connected to the irregular rod B31.

[0066] In this embodiment: when the servo motor 38 is working, it drives the irregular rod B31 to rotate. The electric method makes it easier for the staff to stir the disinfectant and clean the residual liquid on the inner wall of the preparation tank 1.

[0067] Working principle: When the operator needs to clean the residual disinfectant on the inner wall of the equipment, the nozzle 28 is first activated to spray the cleaning solution (the cleaning solution can be tap water or selected according to the type of disinfectant). Simultaneously, as the nozzle 28 sprays the cleaning solution onto the inner wall of the preparation tank 1, the operator starts the servo motor 38, which drives the irregularly shaped rod B31 to rotate. Since the irregularly shaped rod B31 is a regular pentagon, its rotation drives the inner cylinder 22 to rotate. The rotation of the inner cylinder 22, in turn, drives the rotating shaft 23 to rotate. This, in turn, drives the base plate 26 to rotate inside the preparation tank 1 via the irregularly shaped rod A25. This, in turn, drives the scraper 27 to rotate inside the preparation tank 1. The scraper 27 then drives the ball bearings 2... 10. The scraper 27 rolls on the surface of the configuration box 1 via the limiting groove 211, making its movement smoother. Because the scraper 27's shape is designed to fit the inner wall of the configuration box 1, and a silicone plate 212 is fixed to the surface of the scraper 27 (the silicone plate 212 is made of silicone, which is soft and elastic), the scraper 27 can fit well against the inner wall of the configuration box 1. This improves scraping efficiency and prevents leakage, resulting in a cleaner inner wall of the configuration box 1. The reduced water droplets also facilitate rapid evaporation of moisture inside the configuration box 1, preventing bacterial growth caused by a long-term damp environment. Thus, the scraper 27 collects water droplets on the inner wall of the configuration box 1 during rotation, and the collected water droplets are discharged through the outlet. The disinfectant solution flows out of the container 1 through the outlet 11. The cleaning fluid removes residual disinfectant from the inner wall of the container 1. Then, the scraper 27 collects water droplets from the inner wall of the container 1 and allows them to flow out, cleaning the inner wall of the container 1. During the disinfectant preparation process, the inner cylinder 22 rotates, causing the locking pin 34 to slide along the annular track groove 35 on the surface of the sleeve 33. Because the annular track groove 35 has a certain height difference, as the locking pin 34 slides within the annular track groove 35, the inner cylinder 22 rotates and moves up and down along the trajectory of the locking pin 34 on the inner surface of the sleeve 33. At this time, the inner cylinder 22 slides on the surface of the irregular rod B31 through the irregular groove B32. The irregular rod B31 has a pentagonal design... The design allows the shaped rod B31 to drive the inner cylinder 22 to rotate while simultaneously allowing the inner cylinder 22 to slide on the surface of the shaped rod B31. This limits and guides the movement trajectory of the inner cylinder 22, enabling the inner cylinder 22 to drive the rotating shaft 23 and the stirring rod 24 fixed to its surface to rotate while also moving up and down. While the rotating shaft 23 moves up and down, the shaped rod A25 slides on the surface of the rotating shaft 23 through the shaped groove A36. The pentagonal design of the shaped rod A25 allows the rotating shaft 23 to drive the shaped rod A25 to rotate while simultaneously allowing the shaped rod A25 to slide on the surface of the rotating shaft 23, limiting and guiding the movement trajectory of the shaped rod A25. When the shaped rod A25 slides on the inner surface of the rotating shaft 23 through the shaped groove A36...The drain hole 37 connects the internal space of the rotating shaft 23 with the internal space of the mixing box 1. This prevents air from being trapped inside the shaped groove A36 when the shaped rod A25 slides into the rotating shaft 23, thus avoiding disruption to the normal operation of the equipment. The rotation of the rotating shaft 23 drives the stirring rod 24 to rotate. Therefore, during the preparation of the disinfectant solution, both the scraper 27 and the stirring rod 24 can stir the disinfectant solution, accelerating the mixing speed and improving the efficiency of the equipment. This design also accelerates the dissolution rate of the disinfectant solution in the solvent, ensuring a uniform distribution of various components and improving the uniformity of the disinfectant solution mixture. This prevents localized high or low concentrations and ensures consistent disinfection results.

[0068] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A disinfectant dispenser, comprising a dispenser box (1) and an outlet (11) disposed at the bottom of the dispenser box (1), characterized in that: It also includes a cleaning component (2) disposed on the surface of the configuration box (1); The cleaning component (2) includes a mounting base (21) disposed on the surface of the configuration box (1). The configuration box (1) is mounted on the surface of the mounting base (21). An inner cylinder (22) is disposed on the surface of the configuration box (1). A rotating shaft (23) is fixedly connected to one end of the inner cylinder (22) away from the configuration box (1). Six sets of stirring rods (24) are symmetrically fixedly connected to the surface of the rotating shaft (23). A shaped rod A (25) is disposed at one end of the rotating shaft (23) away from the inner cylinder (22). A base plate (26) is fixedly connected to one end of the shaped rod A (25) away from the rotating shaft (23). A scraper (27) is symmetrically fixedly connected to the surface of the base plate (26). Spray nozzles (28) are symmetrically mounted on the inner surface of the configuration box (1).

2. The disinfectant preparation device according to claim 1, characterized in that: The scraper (27) is designed to fit the inner wall of the configuration box (1).

3. The disinfectant preparation device according to claim 1, characterized in that: The surface of the configuration box (1) is provided with a groove (29) that matches the base plate (26).

4. The disinfectant preparation device according to claim 1, characterized in that: The scraper (27) has two sets of balls (210) rotatably connected to its surface, and the configuration box (1) has a limiting groove (211) that cooperates with the balls (210) on its surface.

5. The disinfectant preparation device according to claim 1, characterized in that: A silicone plate (212) is fixedly connected to the scraper (27) on the side near the configuration box (1).

6. The disinfectant preparation device according to claim 1, characterized in that: It also includes a stirring assembly (3) disposed on the surface of the configuration box (1); The stirring assembly (3) includes a shaped rod B (31) disposed on the surface of the inner cylinder (22). The surface of the inner cylinder (22) is provided with a shaped groove B (32) that mates with the shaped rod B (31). The shaped rod B (31) is slidably connected to the inner cylinder (22) through the shaped groove B (32). A sleeve (33) is slidably connected to the surface of the inner cylinder (22). The sleeve (33) is fixedly connected to the surface of the configuration box (1). A retaining post (34) is fixedly connected to the surface of the inner cylinder (22). An annular track groove (35) that mates with the retaining post (34) is provided on the surface of the sleeve (33). A shaped groove A (36) that mates with the shaped rod A (25) is provided on the surface of the rotating shaft (23).

7. The disinfectant preparation device according to claim 6, characterized in that: Both the irregular rod A (25) and the irregular rod B (31) are regular pentagons.

8. The disinfectant preparation device according to claim 7, characterized in that: The surface of the rotating shaft (23) is symmetrically provided with a plurality of drainage holes (37), and the drainage holes (37) are connected to the irregular groove A (36).

9. The disinfectant preparation device according to claim 8, characterized in that: A servo motor (38) is mounted on the surface of the configuration box (1), and the output shaft of the servo motor (38) is fixedly connected to the irregular rod B (31).

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