Water supply tank with self-cleaning and sterilizing functions

Abstract

A water supply tank with self-cleaning and sterilizing functions comprises a water tank body used for containing water, a water inlet pipe and a water outlet pipe are connected to the outer portion of the water tank body, a plurality of ultraviolet lamp tubes are inserted into the water tank body, and the inner side tank wall of the water tank body is coated with a photocatalytic coating. A partition plate capable of dividing an inner cavity of the water tank body into mutually isolated sub-cavities is further arranged in the water tank body, any sub-cavity is connected with the water inlet pipe and the water outlet pipe through a branch pipe and a corresponding switch valve, and the ultraviolet lamp tube is arranged in any sub-cavity. The double functions of photocatalytic self-cleaning of the inner wall of the water tank body and disinfection and sterilization of stored water can be achieved, and ozone peculiar smell is avoided.

Description

Technical Field

[0001] The utility model relates to the field of water supply equipment, in particular to a water supply tank with self-cleaning and sterilization functions. Background Art

[0002] As the public's requirements for drinking water quality continue to increase, more and more pure water equipment is entering the community. After the pure water is prepared and before it is used, the water purification device needs to store the purified water in the water supply tank for a certain period of time. Most of the current water tank materials are polypropylene plastic or stainless steel plates. These materials are not easy to adsorb bacteria during the short-term water storage process. However, in hot weather such as summer, microorganisms in the air can easily parasitize on the surface of these materials and form a biological contamination adsorption layer. If it is not disinfected and sterilized in time, it is easy to cause secondary pollution to the clean water source.

[0003] The water supply tanks of current integrated water supply equipment are basically disinfected and sterilized by a combination of ozone and ultraviolet irradiation. However, the attachments on the walls of the water supply tanks cannot be removed, and regular manpower is required to open the tanks for cleaning. Moreover, since ozone dissolves in water, it is easy to produce odor in the output water. Utility Model Content

[0004] The utility model aims to provide a water supply tank with self-cleaning and sterilization functions, realizing the dual functions of photocatalytic self-cleaning of the inner wall of the water tank and disinfection and sterilization of stored water, and avoiding ozone odor.

[0005] In order to solve the above technical problems, the specific solution adopted by the utility model is: a water supply tank with self-cleaning and sterilization functions, including a water tank body for holding water, the outside of the water tank body is connected to a water inlet pipe and a water outlet pipe, a plurality of ultraviolet lamp tubes are inserted in the water tank body, the inner wall of the water tank body is coated with a photocatalytic coating, and a partition is also provided in the water tank body, which can divide the inner cavity of the water tank body into mutually isolated sub-chambers, any sub-chamber is respectively connected to the water inlet pipe and the water outlet pipe through a branch pipe and a corresponding switch valve, and any sub-chamber has the ultraviolet lamp tube.

[0006] Preferably, the water tank body is rectangular, the partition is a straight plate and is made of stainless steel or polyurethane plastic material, the sub-chambers are formed on both sides of the partition in the water tank body, and the photocatalytic coating is coated on both sides of the partition respectively.

[0007] Preferably, the partitions are distributed parallel to the short sides of the water tank body, ultraviolet lamps are provided at positions close to the four corners of the sub-chambers, and the ultraviolet lamps are distributed vertically.

[0008] Preferably, the number of the partitions is one, and the partitions divide the inner cavity of the water tank body into two sub-chambers with the same volume.

[0009] Preferably, the water tank body is rectangular, the partition is cylindrical and made of inorganic glass material, and the sub-chambers are formed on the inner side and the outer side of the partition in the water tank body.

[0010] Preferably, the ultraviolet lamp tubes are arranged at positions outside the partition and corresponding to the four corners of the water tank body, and the ultraviolet lamp tubes are distributed vertically.

[0011] Preferably, the cross-sectional shape of the partition is rectangular.

[0012] Preferably, a quartz glass tube for plugging and matching with the ultraviolet lamp is provided in the water tank body, and the upper end of the quartz glass tube is open and extends out of the top of the water tank body.

[0013] The water tank body of the utility model does not have an ozone generating mechanism, but retains the ultraviolet lamp tube, and a photocatalytic coating is coated on the inner wall of the water tank body. During the implementation process, the ultraviolet light emitted by the ultraviolet lamp tube not only directly disinfects and sterilizes, but also serves as a light excitation source for the photocatalytic coating, so that the photocatalytic coating simultaneously sterilizes and sterilizes the water body and realizes the self-cleaning function of the inner wall of the water tank body.

[0014] In addition, the water tank body of the utility model is divided into a plurality of sub-chambers isolated from each other by partitions, and the plurality of sub-chambers can be alternately filled with water for water supply, so that when some sub-chambers are filled with water to meet the water supply demand, the remaining sub-chambers are not filled with water, so that the ultraviolet rays generated by the ultraviolet lamps therein are directly irradiated on the photocatalytic coating on the inner wall of the water tank body without being disturbed by the water, thereby ensuring the efficient operation of the self-cleaning function of the photocatalytic coating, giving full play to the self-cleaning function of the photocatalytic coating, and facilitating the disinfection and sterilization effect of the water in the water tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a longitudinal cross-sectional structural schematic diagram of Embodiment 1 of a water supply tank with self-cleaning and sterilization functions of the utility model;

[0016] Figure 2 for Figure 1 AA-direction cross-sectional structural diagram;

[0017] Figure 3 It is a schematic cross-sectional view of the structure of Embodiment 2 of a water supply tank with self-cleaning and sterilization functions of the utility model;

[0018] Markings in the figure: 1. water tank body, 2. photocatalytic coating, 3. quartz glass tube, 4. ultraviolet lamp tube, 5. sub-chamber, 6. water outlet pipe, 7. partition, 8. water inlet pipe, 9. branch pipe, 10. switch valve. DETAILED DESCRIPTION

[0019] like Figure 1-3 As shown, the utility model is a water tank with self-cleaning and sterilization functions. The inner side of the water tank body 1 of the water tank is provided with a photocatalytic coating 2, and the water tank body 1 is also provided with an ultraviolet lamp 4 and a partition 7. The ultraviolet light generated by the ultraviolet lamp 4 is directly used for water disinfection and sterilization, and on the other hand, it is fully used as an excitation light source for the photocatalytic coating 2, so that the photocatalytic coating 2 produces a dual effect of self-cleaning and disinfection. The partition 7 divides the water tank body 1 into mutually isolated sub-chambers 5, and the sub-chambers 5 are alternately filled with water for water supply. The ultraviolet lamp 4 in the sub-chamber 5 that does not contain water is also always on, so that the ultraviolet light does not need to penetrate the water body and directly irradiates the photocatalytic coating 2, thereby ensuring its self-cleaning effect.

[0020] The technical solution of the utility model is described below through two embodiments. It should be noted that the photocatalytic coating 2 and the preparation method in Example 1 and Example 2 are independently developed by the applicant and are separately applied for invention patents, and are not the protection objects of the utility model. Those skilled in the art can also achieve similar self-cleaning and disinfection and sterilization effects through conventional titanium dioxide coatings in the field.

[0021] Example 1

[0022] like Figure 1 As shown, the water tank body 1 is a conventional rectangle, and the partition 7 is located in the middle of the water tank body 1 and divides the water tank body 1 into two mutually isolated left and right sub-chambers 5. The water tank body 1 and the partition 7 are both made of stainless steel. The tops of the two sub-chambers 5 are connected to the water inlet pipe 8 through the branch pipe 9 and the switch valve 10, so that the water produced by the water making equipment is passed into the corresponding sub-chamber 5 through the water inlet pipe 8; the bottoms of the two sub-chambers 5 are connected to the water outlet pipe 6 through the branch pipe 9 and the switch valve 10, so that the water in the corresponding sub-chamber 5 is led to the water intake element through the water outlet pipe 6. In addition, the water inlet pipe 8 and the water outlet pipe 6 are respectively provided with pumps, sensors, controllers and other electrical components, which are the same as the water supply tank system in the prior art and will not be described in detail here.

[0023] like Figure 2 As shown, in order to ensure the self-cleaning and sterilization effect of the photocatalytic coating 2 at the corners of the sub-chamber 5, a quartz glass tube 3 is provided at the four corners of the top of any sub-chamber 5. The lower end of the quartz glass tube 3 is inserted from the top of the sub-chamber 5 to a position close to the bottom of the sub-chamber 5. The upper end of the quartz glass tube 3 is open and provided for the insertion and matching of the ultraviolet lamp tube 4, so as to facilitate the replacement and maintenance of the ultraviolet lamp tube 4.

[0024] The photocatalytic coating 2 in this embodiment is GC-Ag-TiO2, and the preparation method includes the following steps:

[0025] (1) Preparation of nano-GC-Ag-TiO2 photocatalyst

[0026] Take 1:1 volume (6ml) of anhydrous ethanol and water, add 20-30% nitric acid (1.2ml) (adjust pH to ensure the solubility of silver nitrate) and 0.25% (0.0425g) silver nitrate, place it on a magnetic stirrer and stir for 5min, then add 0.1g of 100-mesh high-purity graphite powder (GC) (to enhance light absorption performance and improve the transmission of photoelectrons, increase the number of electron holes in the photooxidation process, and enhance the photooxidation effect) and continue stirring for 5min. Stir well and record it as liquid A. Add 3ml of glacial acetic acid to 30mL of anhydrous ethanol, and then use a syringe pump to disperse 10mL of butyl titanate into it, with a drop speed of 0.25mL / min. After the drop is completed, stir for another 5min, which is recorded as liquid B. Use a syringe pump to slowly drip liquid B into liquid A, with a drop speed of 2mL / min. During the drop process, control the reaction temperature to 15-25℃, keep the speed constant at 280r / min, and stir for 2h to form a uniform sol. The sol obtained after stirring was aged at room temperature for 12 hours and then dried in a drying oven at 80°C. The obtained solid material was ground and then calcined in a muffle furnace at 450°C for 1 hour with a heating rate of 5°C / min. Then, it was ground into powder to obtain nano GC-Ag-TiO2 photocatalyst.

[0027] (2) Preparation of self-cleaning coating

[0028] Add 1%-10% GC-Ag-TiO2 powder catalyst to polytetrafluoroethylene aqueous dispersion, vigorously stir and ultrasonically vibrate for 20-30 minutes to obtain a uniform coating; wipe the stainless steel base material with dilute hydrochloric acid and alcohol, and evenly spray the mixed coating on the surface of the stainless steel plate by spray gun or brush, with the spraying thickness of 0.1-100 microns; put the sprayed plate in an oven and dry it at 100-200 degrees for 2-8 hours to form a self-cleaning coating with sterilization function.

[0029] Example 2

[0030] like Figure 3As shown, the water tank body 1 in this embodiment is also a conventional rectangle and is made of stainless steel. What is different from Example 1 is that the partition 7 in this embodiment is rectangular and made of inorganic glass. The two sub-chambers 5 in this embodiment are respectively formed by the inner cavity of the rectangular partition 7 and the interlayer between the partition 7 and the water tank body 1. The two sub-chambers 5 are also connected to the water inlet pipe 8 and the water outlet pipe 6 (not shown in the figure) through the branch pipe 9 and the switch valve 10 as in Example 1. Because the partition 7 in this embodiment is transparent, only four ultraviolet lamp tubes 4 are set in this embodiment. The four ultraviolet lamp tubes 4 are located outside the partition 7 and correspond to the positions of the four corners of the water tank body 1. The four ultraviolet lamp tubes 4 are always open. On the one hand, the water in the inner or outer sub-chamber 5 is continuously disinfected and sterilized by ultraviolet rays. On the other hand, the photocatalytic coating 2 is directly irradiated after the outer sub-chamber 5 is emptied to ensure its self-cleaning effect.

Claims

1. A water supply tank with self-cleaning and sterilizing functions, comprising a water tank body (1) for containing water, the water tank body (1) being externally connected with a water inlet pipe (8) and a water outlet pipe (6), and a plurality of ultraviolet lamp tubes (4) being inserted in the water tank body (1), characterized in that: The inner wall of the water tank body (1) is coated with a photocatalytic coating (2), and a partition (7) is also provided in the water tank body (1) for dividing the inner cavity of the water tank body (1) into mutually isolated sub-chambers (5). Each sub-chamber (5) is respectively connected to the water inlet pipe (8) and the water outlet pipe (6) through a branch pipe (9) and a corresponding switch valve (10), and each sub-chamber (5) has the ultraviolet lamp tube (4).

2. A water supply tank with self-cleaning and sterilization functions as claimed in claim 1, characterized in that: The water tank body (1) is rectangular, the partition (7) is a straight plate and is made of stainless steel or polyurethane plastic material, the sub-chambers (5) are formed on both sides of the partition (7) in the water tank body (1), and the photocatalytic coating (2) is coated on both sides of the partition (7).

3. A water supply tank with self-cleaning and sterilization functions as claimed in claim 2, characterized in that: The partition (7) is distributed parallel to the short side of the water tank body (1), and ultraviolet lamp tubes (4) are arranged at positions close to the four corners of the sub-chamber (5), and the ultraviolet lamp tubes (4) are distributed vertically.

4. A water supply tank with self-cleaning and sterilization functions as claimed in claim 2, characterized in that: The number of the partition (7) is one, and the partition (7) divides the inner cavity of the water tank body (1) into two sub-chambers (5) of the same volume.

5. A water supply tank with self-cleaning and sterilization functions as claimed in claim 1, characterized in that: The water tank body (1) is rectangular, the partition (7) is cylindrical and made of inorganic glass material, and the sub-chambers (5) are formed on the inner side and the outer side of the partition (7) in the water tank body (1).

6. A water supply tank with self-cleaning and sterilization functions as claimed in claim 5, characterized in that: The ultraviolet lamp tubes (4) are arranged in the water tank body (1) at positions outside the partition (7) and corresponding to the four corners of the water tank body (1), and the ultraviolet lamp tubes (4) are distributed vertically.

7. A water supply tank with self-cleaning and sterilization functions as claimed in claim 5, characterized in that: The cross-sectional shape of the partition (7) is rectangular.

8. A water supply tank with self-cleaning and sterilization functions as claimed in claim 1, characterized in that: A quartz glass tube (3) for plugging and matching with an ultraviolet lamp tube (4) is arranged in the water tank body (1); the upper end of the quartz glass tube (3) is open and extends out of the top of the water tank body (1).

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