Sterilization device and water outlet equipment

Abstract

The sterilization device comprises a lamp tube, an ultraviolet lamp, a spiral descaling brush and a rotating shaft, the rotating shaft is installed in the lamp tube along the axis of the lamp tube, the spiral descaling brush is installed on the rotating shaft and provided with spiral brush pieces, and the spiral brush pieces continuously and spirally extend in the axial direction of the lamp tube; the outer end of the spiral brush piece in the radial direction makes contact with the inner wall of the lamp tube, the spiral descaling brush can be driven by water flow to rotate, the ultraviolet lamp is arranged outside the lamp tube, and the irradiation direction of the ultraviolet lamp faces the spiral descaling brush. The straight-through type overflowing pipeline is adopted for discharging water, the spiral descaling brush is arranged in the lamp tube, when water flows through, the spiral descaling brush can be driven to rotate, so that coverings such as water scales on the tube wall of the lamp tube are scraped away, self-cleaning descaling is achieved, and the ultraviolet lamp is arranged outside the lamp tube and emits ultraviolet rays to irradiate water passing through the lamp tube.

Description

Technical Field

[0001] The present invention relates to the technical field of water treatment equipment, and particularly to a sterilization device and a water outlet device. Background Art

[0002] With the improvement of people's living standards, people have higher and higher requirements for the water used in a healthy life, and will perform sterilization treatment on drinking water. Ultraviolet sterilization mainly uses the emission of high-energy light to destroy the cell membrane of bacteria to achieve the purpose of inhibiting bacteria. It has a fast purification speed, no residue, and no secondary pollution. Therefore, ultraviolet sterilization water treatment equipment is more and more favored by users.

[0003] At present, all ultraviolet sterilization devices on the market mainly adopt two types: one is the ultraviolet light emitted by a mercury lamp tube, and the other is to emit ultraviolet light of a certain wavelength to the water flow through a glass tube lampshade by UVLED, both of which destroy the molecular structure of DNA or RNA (ribonucleic acid) in the microbial body cells, causing growth cell death and / or reproductive cell death, so as to achieve sterilization and disinfection.

[0004] However, both of these two types on the current market will encounter difficult problems when dealing with water channel sterilization. After long-term water passing and water contact, scale, impurities and other coverings will remain on the quartz tube wall, and the coverings will block the irradiation of ultraviolet light on the water body, thus greatly reducing the sterilization efficiency of ultraviolet light.

[0005] One of the prior arts is to add a filtering device such as an RO membrane at the front end of the ultraviolet water body sterilization device to filter impurities, scale and other devices, which is mainly applied to products such as water purifiers. Because adding a front-end filtering and water purification device will inevitably lead to a small water outlet flow rate, which cannot meet the water outlet requirements of existing national standards in other water use fields. For example, it cannot be applied to the water outlet of a bathroom faucet. The national standard requires that the minimum water outlet flow rate of a washbasin faucet, a kitchen faucet, etc. is 3L / min, and it is impossible to meet the water outlet flow rate standard with a water purification device plus a sterilization device in a limited space.

[0006] Another prior art is to drive the lamp tube to rotate through a motor and use a fixed cleaning brush to clean the attachments on the surface of the lamp tube. However, this solution using an electric control to drive the cleaning brush has a complex structure, is prone to failure, and has a high cost, and is not suitable for wide application. Summary of the Invention

[0007] The present invention aims to at least partly solve one of the above technical problems in the related art. For this reason, the present invention proposes a sterilization device.

[0008] To achieve the above object, the technical solution of the present invention is as follows:

[0009] The present invention also proposes a water outlet device having the above sterilization device.

[0010] A sterilization device according to an embodiment of the first aspect of the present invention includes a lamp tube, an ultraviolet lamp, a spiral descaling brush, and a rotating shaft. The two ends of the lamp tube are respectively a water inlet end and a water outlet end. The rotating shaft is installed in the lamp tube along the axis of the lamp tube. The spiral descaling brush is installed on the rotating shaft. The spiral descaling brush has spiral brush pieces, and the spiral brush pieces continuously spiral and extend along the axial direction of the lamp tube. The outer end portion of the spiral brush pieces in the radial direction contacts the inner wall of the lamp tube. The spiral descaling brush can be driven by water flow to rotate. The ultraviolet lamp is arranged outside the lamp tube, and the position of the ultraviolet lamp corresponds to the position of the spiral descaling brush. The irradiation direction of the ultraviolet lamp faces the spiral descaling brush.

[0011] The sterilization device according to the embodiment of the present invention has at least the following beneficial effects:

[0012] 1. The present invention adopts a straight-through flow-through pipeline for water outlet, and a spiral descaling brush is arranged in the lamp tube. When water flows through, it will drive the spiral descaling brush to rotate, so as to scrape off the scale and other coverings on the inner wall of the lamp tube, realizing self-cleaning and descaling. An ultraviolet lamp is arranged outside the lamp tube, and it emits ultraviolet rays to irradiate the water body passing through the lamp tube.

[0013] 2. The sterilization device of the present invention can pass water with a large flow rate, and there is no need to install a filtering device at the front end, and there is almost no flow loss. It meets the faucet flow standard requirements and reaches the sterilization requirements at the same time, and can be applied to the water outlet pipelines such as bathroom faucet devices.

[0014] 3. Compared with the control by an electric controller, the present invention uses the flowing water to drive the spiral descaling brush, and automatically cleans the lamp tube through the water body flow. It does not require electricity and electronic control, the structure is simpler and more reliable, and the cost is also lower, which is conducive to wide application, and effectively avoids the trouble of later disassembly and cleaning of traditional ultraviolet sterilization lamps and the cost waste of overall replacement.

[0015] According to some embodiments of the present invention, it further includes a shape memory alloy spring and a return spring. The spiral descaling brush is sleeved on the rotating shaft, and the spiral descaling brush can move axially along the rotating shaft. One end of the rotating shaft is provided with a first limiting flange, and the other end is provided with a second limiting flange. The shape memory alloy spring and the return spring are sleeved on the rotating shaft, and the shape memory alloy spring and the return spring are respectively located at both ends of the spiral descaling brush. Among them, the shape memory alloy spring abuts between the first limiting flange and the spiral descaling brush, and the return spring abuts between the second limiting flange and the spiral descaling brush.

[0016] According to some embodiments of the present invention, a water inlet joint and a water outlet joint are respectively installed at the water inlet end and the water outlet end of the lamp tube. The water inlet joint and the water outlet joint are both provided with rotating shaft mounting seats, and both ends of the rotating shaft are installed on the rotating shaft mounting seats.

[0017] According to some embodiments of the present invention, the rotating shaft mounting seat has a groove, and steel balls are installed in the groove. The end of the rotating shaft is embedded in the groove and abuts against the steel balls.

[0018] According to some embodiments of the present invention, the water inlet direction of the water inlet joint and the water outlet direction of the water outlet joint are both parallel to the axis of the lamp tube.

[0019] According to some embodiments of the present invention, it further includes a housing. The housing is in a sleeve shape. The lamp tube and the ultraviolet lamp are placed inside the housing. The two ends in the length direction of the housing are respectively connected to the water inlet joint and the water outlet joint.

[0020] According to some embodiments of the present invention, it further includes a lamp board. The ultraviolet lamp is an LED ultraviolet lamp bead. The LED ultraviolet lamp bead is arranged on the lamp board. The lamp board is located outside the lamp tube. There are several LED ultraviolet lamp beads on the lamp board, and these ultraviolet lamp beads are arranged at intervals along the axis of the spiral descaling brush.

[0021] According to some embodiments of the present invention, two or more spiral brush pieces are arranged on the spiral descaling brush along its circumferential direction. According to the number of the spiral brush pieces, the same number of lamp boards are arranged along the circumferential direction of the lamp tube, and the number of LED ultraviolet lamp beads on each lamp board is the same.

[0022] According to some embodiments of the present invention, the spiral descaling brush is composed of a hard main body bracket and a soft rubber layer wrapped on the outer surface of the main body bracket. And the soft rubber layer at the outer end in the radial direction of the spiral brush piece is a sharp corner structure, which is in interference fit with the inner wall of the lamp tube.

[0023] The water outlet device according to the second aspect embodiment of the present invention includes the sterilization device, the water outlet part body, the water outlet pipe, the water flow switch and the power supply. The sterilization device and the water flow switch are connected to the water outlet pipe. The power supply is electrically connected to the water flow switch, and the water flow switch is electrically connected to the ultraviolet lamp.

[0024] The additional aspects and advantages of the present invention will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0026] Figure 1 is a schematic structural diagram of the sterilization device of the present invention in the initial state;

[0027] Figure 2 is a schematic structural diagram of the sterilization device of the present invention in the hot water state;

[0028] Figure 3 is a cross-sectional view of the sterilization device of the present invention;

[0029] Figure 4 is a schematic structural view of the double helix brush piece of the present invention;

[0030] Figure 5 is a schematic structural view of the water outlet device of the present invention.

[0031] Reference numerals: lamp tube 100, LED ultraviolet lamp beads 200, spiral descaling brush 300, spiral brush piece 310, main body bracket 320, soft rubber layer 330, rotating shaft 400, first limiting flange 410, second limiting flange 420, shape memory alloy spring 500, return spring 600, water inlet joint 700, rotating shaft mounting seat 710, steel ball 720, water outlet joint 800, outer shell 900, lamp board 1000, sterilization device 1100, water outlet part body 1200, water outlet pipe 1300, water flow switch 1400, power supply 1500. Detailed Description of the Invention

[0032] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0033] Referring to Figures 1-4 , a sterilization device includes a lamp tube 100, an ultraviolet lamp, a spiral descaling brush 300 and a rotating shaft 400. The lamp tube 100 is a quartz lamp tube, and the two ends of the lamp tube 100 are respectively a water inlet end and a water outlet end. The rotating shaft 400 is installed in the lamp tube 100 along the axis of the lamp tube 100. The spiral descaling brush 300 is installed on the rotating shaft 400. The spiral descaling brush 300 has a spiral brush piece 310. The outer end of the spiral brush piece 310 in the radial direction is made of soft rubber material, and its top abuts against the inner wall of the lamp tube 100. The spiral descaling brush 300 can be driven by water flow to rotate. The ultraviolet lamp is arranged outside the lamp tube 100, and the position of the ultraviolet lamp corresponds to the position of the spiral descaling brush 300, and the irradiation direction of the ultraviolet lamp faces the spiral descaling brush 300. Water enters the water inlet end of the lamp tube 100. When the water body flows, the ultraviolet lamp has been powered on and is in a sterilization state. The flowing water body drives the spiral descaling brush 300 to rotate. Since the spiral-shaped spiral brush piece 310 blocks the flow of water, the water flow directly axially impacts the spiral brush piece 310, and the spiral brush piece 310 will receive the resultant force of the water flow rotation, thereby driving the spiral descaling brush 300 to rotate.

[0034] In some embodiments of the present invention, a memory alloy spring 500 and a return spring 600 are further included. The spiral descaling brush 300 is sleeved on the rotating shaft 400. The spiral descaling brush 300 can move axially along the rotating shaft 400. A first limiting flange 410 is provided at one end of the rotating shaft 400, and a second limiting flange 420 is provided at the other end. The memory alloy spring 500 and the return spring 600 are sleeved on the rotating shaft 400, and the memory alloy spring 500 and the return spring 600 are respectively located at the two ends of the spiral descaling brush 300, wherein the memory alloy spring 500 is pressed against between the first limiting flange 410 and the spiral descaling brush 300, and the return spring 600 is pressed against between the second limiting flange 420 and the spiral descaling brush 300. Cold water is not easy to scale and breed coverings, and it is easy to scrape off when cold water flows. However, when the water flow is stationary, especially when hot water is sealed in the pipe, the water temperature is still relatively high, the molecular movement is relatively fast, and the hardness of the water is relatively high, scale will be produced and attached to the pipe wall. If it is not used for a long time, it will be obviously scaled, and it will be difficult for the water flow to easily scrape off the scale when it is turned on next time. In order to solve the problem of easy scaling when standing hot water, the present invention respectively sets a memory alloy spring 500 and a reset spring 600 at both ends of the rotating shaft 400. When the temperature of the incoming water is lower than the deformation temperature of the memory alloy spring 500, that is, cold water, the memory alloy spring 500 is in a compressed state, and the water flow directly impacts the spiral descaling brush 300 to rotate, scraping off the attachments on the tube wall. When the temperature of the incoming water is higher than the deformation temperature of the memory alloy spring 500, that is, hot water, the memory alloy spring 500 is deformed, the reset spring 600 is compressed, the memory alloy spring 500 pushes the spiral descaling brush 300 to move axially, and the water flow directly impacts the spiral descaling brush 300 to rotate, scraping off the attachments on the inner wall of the lamp tube 100. When the hot water flow is left standing, the water temperature will slowly decrease, the deformation stiffness of the memory alloy spring 500 will slowly soften, and the reset spring 600 will push the spiral descaling brush 300 to move axially and slowly reset. This process will scrape the inner wall of the lamp tube 100 until the temperature drops to room temperature. When it becomes room temperature, it is not easy to adhere to the tube wall, which prevents the problem of scaling caused by high-temperature water standing still.

[0035] In some embodiments of the present invention, the water inlet end and the water outlet end of the lamp tube 100 are respectively installed with a water inlet joint 700 and a water outlet joint 800, and the water inlet joint 700 and the water outlet joint 800 are both provided with a shaft mounting seat 710, and both ends of the rotating shaft 400 are mounted on the shaft mounting seat 710. The ends of the water inlet joint 700 and the water outlet joint 800 facing the outside of the lamp tube 100 are provided with threads for connecting with an external water pipe, and the ends of the water inlet joint 700 and the water outlet joint 800 facing the inside of the lamp tube 100 are the shaft mounting seat 710, and the shaft mounting seat 710 extends into the lamp tube 100.

[0036] In some embodiments of the present invention, the rotating shaft mounting seat 710 has a groove, in which steel balls 720 are installed. The end of the rotating shaft 400 is embedded in the groove and abuts against the steel balls 720. The shape memory alloy spring 500 and the return spring 600 respectively abut against the first limiting flange 410 and the second limiting flange 420. Frictional forces will be generated at the parts where the springs contact the flanges and at the parts where the springs contact the spiral descaling brush 300. When the spiral descaling brush 300 rotates, it will drive the rotating shaft 400 to rotate together. Therefore, adding steel balls 720 at both ends of the rotating shaft 400 can reduce the frictional force of the rotation of the rotating shaft 400.

[0037] In some embodiments of the present invention, the water inlet direction of the water inlet joint 700 and the water outlet direction of the water outlet joint 800 are both parallel to the axis of the lamp tube 100. Compared with the case where the water inlet and outlet directions are perpendicular to the axial direction of the spiral descaling brush 300, in the present invention, the water inlet and outlet water flow directions are parallel to the axis of the lamp tube 100, and the water flow directly impacts the spiral brush pieces 310, which can better drive the rotation of the spiral descaling brush 300.

[0038] In some embodiments of the present invention, it further includes a housing 900. The housing 900 is in a sleeve shape. The lamp tube 100 and the ultraviolet lamp are placed inside the housing 900. The two ends in the length direction of the housing 900 are respectively connected to the water inlet joint 700 and the water outlet joint 800. The housing 900 is made of aluminum alloy, which can effectively dissipate heat for the ultraviolet lamp.

[0039] In some embodiments of the present invention, it further includes a lamp board 1000. The ultraviolet lamp is an LED ultraviolet lamp bead 200. The LED ultraviolet lamp bead 200 is arranged on the lamp board 1000. The lamp board 1000 is located outside the lamp tube 100. A plurality of LED ultraviolet lamp beads 200 are arranged on the lamp board 1000, and these ultraviolet lamp beads are arranged at intervals along the axial direction of the spiral descaling brush 300. In the prior art, most of the ultraviolet lamp tubes 100 use mercury lamps to emit ultraviolet rays. It takes about several minutes for the mercury lamp to reach the state where it can sterilize from startup. The water used in sanitary equipment is generally used immediately after it is turned on. It is impossible to wait for several minutes before using it. Waiting for too long does not conform to the usage habit. If it is always kept powered on and in the sterilization state all the time, it will lead to the shortening of the service life of the sterilization equipment and the waste of electric energy. The present invention uses the LED ultraviolet lamp bead 200 to emit ultraviolet rays to irradiate the water body. The LED ultraviolet lamp bead 200 emits ultraviolet rays of a certain wavelength and penetrates through the quartz lamp tube to irradiate the passing water body, killing the bacteria in the water body, which can meet the requirement of sterilization immediately after it is turned on and avoid ineffective waiting.

[0040] In some embodiments of the present invention, the spiral descaling brush 300 is provided with two or more spiral brush pieces 310 along its circumferential direction. According to the number of the spiral brush pieces 310, the same number of lamp boards 1000 are arranged along the circumferential direction of the lamp tube 100, and the number of LED ultraviolet lamp beads 200 on each lamp board 1000 is the same. For example, Figure 4As shown, a double spiral brush sheet 310 is used, and two lamp boards 1000 are correspondingly arranged, and the two lamp boards 1000 are symmetrically arranged, and the LED ultraviolet lamp beads 200 on the two lamp boards 1000 are also arranged one-to-one and face-to-face symmetrically to ensure that the ultraviolet light irradiates the water body without dead angles. If the spiral descaling brush 300 is a three-spiral or four-spiral spiral, an equal number of lamp boards 1000 need to be arranged.

[0041] In some embodiments of the present invention, the spiral descaling brush 300 is composed of a hard main frame 320 and a soft rubber layer 330 wrapped on the outer surface of the main frame 320, and the soft rubber layer 330 located at the outer end of the spiral brush sheet 310 in the radial direction is a sharp-angle structure, which is in interference contact with the inner wall of the lamp tube 100. The spiral descaling brush 300 is supported by a plastic skeleton and installed on the rotating shaft 400. The outer surface of the skeleton is wrapped with an anti-ultraviolet soft rubber layer 330, such as silicone rubber, fluorosilicone rubber, etc. The structure is moderately soft and hard, and can well scrape the inner wall of the lamp tube 100. The soft rubber layer 330 at the outer end of the spiral brush sheet 310 in the radial direction contacts the inner wall of the lamp tube 100, and its shape is designed to be sharp and has an interference fit with the inner wall of the lamp tube 100. The covering can be scraped off when rotating. The sharp angle design can reduce the friction between the spiral brush sheet 310 and the inner wall of the lamp tube 100, and avoid the excessive interference affecting the rotation.

[0042] Reference Figure 5 A water outlet device includes a sterilization device 1100, a water outlet body 1200, a water outlet pipe 1300, a water flow switch 1400 and a power supply. The sterilization device 1100 and the water flow switch 1400 are connected to the water outlet pipe 1300, the power supply is electrically connected to the water flow switch 1400, and the water flow switch 1400 is electrically connected to the ultraviolet lamp. The water flow switch 1400 is installed at the front end of the sterilization device 1100, and the power supply is turned on when there is water flowing to start sterilization. The water flow switch 1400 will turn on the power supply when the water flows, and turn off the power supply when the water stops, so as to avoid the sterilization device 1100 being in a powered state when not in use, causing energy waste.

[0043] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A sterilization device, characterized in that: The invention comprises a lamp tube (100), an ultraviolet lamp, a spiral descaling brush (300) and a rotating shaft (400), wherein two ends of the lamp tube (100) are respectively a water inlet end and a water outlet end, the rotating shaft (400) is installed inside the lamp tube (100) along the axis of the lamp tube (100), the spiral descaling brush (300) is installed on the rotating shaft (400), the spiral descaling brush (300) has a spiral brush sheet (310), the radial outer end of the spiral brush sheet (310) contacts the inner wall of the lamp tube (100), the spiral descaling brush (300) can be driven by water flow to rotate, the ultraviolet lamp is arranged outside the lamp tube (100), the position of the ultraviolet lamp corresponds to the position of the spiral descaling brush (300), and the irradiation direction of the ultraviolet lamp is toward the spiral descaling brush (300).

2. The sterilization device according to claim 1, characterized in that: The invention also comprises a memory alloy spring (500) and a return spring (600); the spiral descaling brush (300) is sleeved on the rotating shaft (400); the spiral descaling brush (300) can move axially along the rotating shaft (400); one end of the rotating shaft (400) is provided with a first limiting flange (410); the other end of the rotating shaft (400) is provided with a second limiting flange (420); the memory alloy spring (500) and the return spring (600) are sleeved on the rotating shaft (400); and the memory alloy spring (500) and the return spring (600) are respectively located at two ends of the spiral descaling brush (300); the memory alloy spring (500) is pressed between the first limiting flange (410) and the spiral descaling brush (300); and the return spring (600) is pressed between the second limiting flange (420) and the spiral descaling brush (300).

3. The sterilization device according to claim 2, characterized in that: A water inlet joint (700) and a water outlet joint (800) are respectively installed at the water inlet end and the water outlet end of the lamp tube (100); a rotating shaft mounting seat (710) is provided on each of the water inlet joint (700) and the water outlet joint (800); and both ends of the rotating shaft (400) are mounted on the rotating shaft mounting seat (710).

4. The sterilization device according to claim 3, characterized in that: The rotating shaft mounting seat (710) has a groove, a steel ball (720) is installed in the groove, and the end of the rotating shaft (400) is embedded in the groove and abuts against the steel ball (720).

5. The sterilization device according to claim 3, characterized in that: The water inlet direction of the water inlet joint (700) and the water outlet direction of the water outlet joint (800) are both parallel to the axis of the lamp tube (100).

6. The sterilization device according to claim 3, characterized in that: It also comprises a housing (900) which is in the shape of a sleeve. The lamp tube (100) and the ultraviolet lamp are placed in the housing (900). Both ends of the housing (900) in the length direction are respectively connected to the water inlet joint (700) and the water outlet joint (800).

7. The sterilization device according to claim 1, characterized in that: It also comprises a lamp board (1000), wherein the ultraviolet lamp is an LED ultraviolet lamp bead (200), the LED ultraviolet lamp bead (200) is arranged on the lamp board (1000), the lamp board (1000) is located outside the lamp tube (100), a plurality of LED ultraviolet lamp beads (200) are arranged on the lamp board (1000), and the ultraviolet lamp beads are arranged at intervals along the axial direction of the spiral descaling brush (300).

8. The sterilization device according to claim 7, characterized in that: The spiral descaling brush (300) is provided with more than two spiral brush pieces (310) along its circumference, and the same number of lamp panels (1000) are arranged along the circumference of the lamp tube (100) according to the number of the spiral brush pieces (310), and the number of LED ultraviolet lamp beads (200) on each lamp panel (1000) is the same.

9. The sterilization device according to claim 1, characterized in that: The spiral descaling brush (300) is composed of a hard main frame (320) and a soft rubber layer (330) wrapped around the outer surface of the main frame (320), and the soft rubber layer (330) located at the outer end of the spiral brush sheet (310) in the radial direction is a pointed structure, which is in interference fit with the inner wall of the lamp tube (100).

10. A water outlet device, characterized in that: It comprises the sterilization device (1100) as described in any one of claims 1 to 9, a water outlet body (1200), a water outlet pipe (1300), a water flow switch (1400) and a power supply, wherein the sterilization device and the water flow switch (1400) are connected to the water outlet pipe (1300), the power supply is electrically connected to the water flow switch (1400), and the water flow switch (1400) is electrically connected to the ultraviolet lamp.

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