CN111206655A

CN111206655A - Drainage degassing unit

Info

Publication number: CN111206655A
Application number: CN202010139358.8A
Authority: CN
Inventors: 陈刚
Original assignee: Shenzhen Hanzhuo Technology Co ltd
Current assignee: Shenzhen Hanzhuo Technology Co ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2020-05-29

Abstract

The invention discloses a drainage disinfection device, which is transversely arranged on a drainage pipeline of each set of housing of a building, and comprises: a housing; the quartz glass tube is sleeved in the shell, a cavity is formed between the outer wall of the quartz glass tube and the inner wall of the shell, and water passes through the quartz glass tube; the ultraviolet disinfection lamp set is arranged in the cavity and distributed along the radial arc of the outer wall of the quartz glass tube, and is externally connected with a control circuit; and the pipe joints are arranged at two ends of the shell and the quartz glass pipe, the inner sides of the pipe joints are fixedly installed on the shell and the quartz glass pipe, and the outer sides of the pipe joints are transversely connected with the drainage pipeline to enable water to flow into or out of the quartz glass pipe. The invention can disinfect the source of sewage and wastewater discharged by residents in each set of housing in the building, thereby preventing pathogens such as virus and bacteria from being transmitted to other residents of the building through the drainage system and avoiding the epidemic of infectious diseases.

Description

Drainage degassing unit

Technical Field

The invention relates to the technical field of drainage disinfection, in particular to a drainage disinfection device applied to a gravity drainage pipeline.

Background

People can produce various sewage and wastewater in daily life, the components of the sewage and wastewater are very complex, a large amount of bacteria and viruses are contained, and a drainage system is a channel for spreading the viruses when epidemic situations occur. A research paper of 'epidemiological investigation and prevention of SARS in hong Kong' from the Chinese medical journal 2003 No. 11 indicates that the failure of water seal and trap of the drainage system is one of the causes of SARS virus channel spread by the sewage drainage system. In the first case reported in the journal of medical science of new england on the first united states of america in 31/1/2020 of the year, that patients with pneumonia who diagnosed the novel coronavirus were successfully cured, 2019-nCoV RNA was detected in the stool sample collected on the 7 th day of the disease onset of the patients, and the possibility of spreading the virus through the drainage system was not excluded.

And a water seal device is arranged at the joint of each sanitary ware and the floor drain in the drainage system and the drainage pipe. The water seal is used for separating substances in the drain pipe from the surrounding environment on the premise of ensuring smooth drainage of the drainage point. Let water seal arrangement play that to cut off the effect be water that has in the water seal, can influence the unobstructed of drainage when water is too much in the water seal, the water seal is easy to be destroyed when depositing water too little, and national standard stipulates water seal thickness promptly the water height of depositing of water seal is not less than 50 mm. When the water flow or air pressure in the drainage pipeline and other factors change greatly instantly, the air pressure in the pipeline forms positive pressure or negative pressure exceeding the limit value, or the drainage point connected with the water seal does not drain for a long time to cause the water seal to dry, at the moment, the water seal is damaged and loses efficacy, and viruses and other harmful substances in the drainage pipeline overflow the pipeline to pollute the environment and even infect people.

Usually, a drainage system in a building is connected with drainage pipes of a plurality of sanitary wares, a plurality of water seal devices exist, the water seal devices are damaged completely at random, the prevention is insufficient, and the difficulty is very high in the premise of not influencing the smoothness of drainage and completely avoiding the phenomenon that the water seal is damaged.

In the existing water supply and drainage disinfection technology, centralized disinfection is generally adopted, for example, a water supply end generally carries out centralized disinfection treatment in a water supply plant or a living pump room of each community, and a drainage end generally collects and disinfects sewage and wastewater containing a large amount of pathogens generated by a building or a piece of district.

That is, in the prior art, the drainage source of each set of houses (i.e. each household) in the building is not disinfected independently, so that when the virus-containing sewage and wastewater of one household enters the public drainage pipeline of the building through a sanitary ware for conveying, the virus-containing sewage and wastewater may be transmitted to other households of the building through the water seal part with the failure of the public drainage pipeline, and the disease is caused to be prevalent.

Therefore, the prior art has yet to be improved.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention provides a drainage disinfection apparatus and a drainage system, which are used for disinfecting the source of sewage and wastewater discharged by residents in each set of housing in a building, thereby preventing pathogens such as viruses and bacteria from being transmitted to other residents in the building through the drainage system and avoiding the spread of infectious diseases.

In order to realize the purpose, the invention adopts the following technical scheme:

a drain disinfection apparatus for a drain pipe system, wherein the drain disinfection apparatus is transversely installed at a drain pipe of each housing of a building, comprising:

a housing;

the quartz glass tube is sleeved in the shell, a cavity is formed between the outer wall of the quartz glass tube and the inner wall of the shell, and water passes through the quartz glass tube;

the ultraviolet disinfection lamp set is arranged in the cavity and distributed along the radial arc of the outer wall of the quartz glass tube, and is externally connected with a control circuit;

and the pipe joints are arranged at two ends of the shell and the quartz glass pipe, the inner sides of the pipe joints are fixedly installed on the shell and the quartz glass pipe, and the outer sides of the pipe joints are transversely connected with the drainage pipeline to enable water to flow into or out of the quartz glass pipe.

The quartz glass tube is transversely provided with a downward slope from the water inlet end to the water outlet end in the shell.

The ultraviolet disinfection lamp group comprises a plurality of ultraviolet disinfection lamps which are arranged at intervals in the radial direction of the lower semicircular arc of the outer wall of the quartz glass tube;

a plurality of fixing seats arranged in an arc shape are arranged in the shell, and each fixing seat is provided with one ultraviolet disinfection lamp.

The pipe joint comprises a pipe sleeve and fixing flanges arranged along the radial direction of the pipe sleeve, the fixing flanges of the pipe joint are in bolted connection with the connecting flanges of the shell, the inner side of the inner wall of the pipe sleeve is tightly matched with the outer wall of the quartz glass pipe and is arranged on the sealing ring, and the outer side of the inner wall of the pipe sleeve is used for being in sealing fit with the outer wall of a drainage pipeline.

The inner wall of the pipe sleeve is also provided with a retaining ring in the radial direction, the inner side of the retaining ring is abutted against the end part of the quartz glass pipe, and the outer side of the retaining ring is abutted against the end part of the drainage pipeline.

The control circuit is arranged on the outer surface of the shell and is electrically connected with the ultraviolet disinfection lamp bank;

the control circuit is provided with a control panel or a switch for controlling the on and off of the ultraviolet disinfection lamp bank.

And the outer part of the quartz glass tube is axially provided with an overhaul seam, and the overhaul seam is hermetically provided with a rubber sealing strip.

When the drainage disinfection device is used, the drainage disinfection device is transversely arranged on a drainage pipeline of each set of housing of a building connected with sanitary wares through the pipe joint, and ultraviolet rays emitted by the ultraviolet disinfection lamp set penetrate through the quartz glass pipe to disinfect sewage and wastewater flowing through the quartz glass pipe so as to kill pathogens such as viruses, bacteria and the like in the sewage and wastewater, thereby disinfecting drainage sources of households in each set of housing of the building, preventing the pathogens from being transmitted to other households of the building through a drainage system and avoiding the pandemics of infectious diseases.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic axial sectional view showing a first embodiment of a drain pipe connected to both ends of a drain sterilizing apparatus according to the present invention;

FIG. 2 is a schematic view of the radial cross-section of the drain disinfection apparatus according to the present invention;

FIG. 3 is an enlarged schematic view at A in FIG. 1;

FIG. 4 is a schematic longitudinal view of a silica glass tube of the present invention;

FIG. 5 is an exploded view of a quartz glass tube of the present invention fitted with a rubber seal;

fig. 6 is a schematic view of an application scenario of the drain disinfection apparatus of the present invention.

Description of reference numerals:

100-a disinfection device, 1-a shell, 10-a cavity, 11-a fixed seat, 12-a connecting flange, 2-a quartz glass tube, 21-a maintenance seam, 22-a rubber sealing strip, 3-an ultraviolet disinfection lamp set, 31-an ultraviolet disinfection lamp, 4-a pipe joint, 41-a pipe sleeve, 411-a pipe sleeve inner side, 412-a pipe sleeve outer side, 42-a fixed flange, 43-a retainer ring, 5-a control circuit, 6-a sealing ring and 200-a drainage pipeline.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present invention, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "connected" may be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In a first embodiment, referring to fig. 1 to 3, the present invention provides a drainage disinfection apparatus 100 applied to a drainage pipeline system, wherein the drainage disinfection apparatus 100 is transversely installed at a drainage pipeline 200 of each housing of a building, and comprises:

a housing 1. The housing 1 may be made of plastic or metal, and the housing 1 mainly protects and supports the components therein.

The quartz glass tube 2 is sleeved in the shell 1, a cavity 10 is formed between the outer wall of the quartz glass tube 2 and the inner wall of the shell 1, and water body passing through the quartz glass tube 2 is used.

The ultraviolet disinfection lamp bank 3 is arranged in the cavity 10 and distributed along the radial arc of the outer wall of the quartz glass tube 2, and the ultraviolet disinfection lamp bank 3 is externally connected with a control circuit 5. The ultraviolet disinfection lamp group 3 emits ultraviolet rays to permeate the quartz glass tube 2 to disinfect the water body in the quartz glass tube 2.

Current sterilization methods can be divided into two broad categories, namely chemical sterilization and physical sterilization. Physical methods include heat, ultraviolet, gamma or X-ray irradiation, molecular sieves, and the like. The chemical method mainly adopts strong oxidant such as chlorine, chlorine dioxide, ozone, potassium permanganate, chloramine, hypochlorous acid and other chemical agents.

The chemical method is generally a disinfection method by adding chemical agents, which requires a long contact reaction time to ensure the disinfection effect, and requires the user of the sanitary ware to automatically add the chemical agents each time the sanitary ware is used, so that the realization is difficult. The physical disinfection method is not suitable for drainage pipelines in the modes of heating, gamma or X-ray irradiation, molecular sieves and the like.

Ultraviolet (ultraviolet) in the physical disinfection method is abbreviated as UV, and is electromagnetic wave with the wavelength of 100 nm-380 nm, wherein the ultraviolet wave band with disinfection capability is 200 nm-280 nm (namely UV-C), the sterilization efficiency of about 250 nm-260 nm wave band is strongest, and after pathogenic microorganisms absorb the ultraviolet energy, genetic materials (nucleic acid) of the pathogenic microorganisms are mutated to cause cells not to divide and reproduce, so that the purposes of disinfection and sterilization are achieved. The ultraviolet disinfection technology is one of physical disinfection modes, has the characteristics of broad-spectrum sterilization capability, no secondary pollution, short disinfection contact time and the like, becomes a mature, reliable, efficient and environment-friendly disinfection technology, and is widely applied to various foreign fields.

Therefore, the drain water disinfection device 100 of the invention adopts an ultraviolet disinfection mode, and an ultraviolet disinfection lamp group 3 is arranged outside the quartz glass tube 2 of the disinfection device 100 for irradiation disinfection. The ultraviolet disinfection effect is measured by the product of ultraviolet irradiation dose and contact time, when the contact time is short, the irradiation dose can be selected to be large, and when the contact time is long, the irradiation dose can be selected to be small. Therefore, the length and the diameter of the quartz glass tube 2 and the longitudinal distribution length of the ultraviolet disinfection lamp group 3 in the quartz glass tube 2 can be selected according to actual requirements, and the disinfection effect can be achieved as well. Meanwhile, the ultraviolet disinfection time is short, and the ultraviolet disinfection is also one of the characteristics of ultraviolet disinfection.

The drainage disinfection device 100 adopts the ultraviolet disinfection lamp group 3, and determines the number of ultraviolet disinfection lamps in the ultraviolet disinfection lamp group 3 through calculation and design.

The ultraviolet disinfection products in the market are various, and the ultraviolet disinfection of water and other liquids generally adopts two modes of irradiation in water or irradiation outside water.

The ultraviolet disinfection for the pressure water pipeline is basically an irradiation mode in water. The water flow in the pressure water supply pipeline and the pressure drainage pipeline is in a full pipe flow state, and the water in the pipelines flows through the disinfector to be disinfected. The disinfection device arranged in the pressure pipeline only increases a little water pressure loss and cannot influence the water passing function of the pipeline.

The drainage pipeline of residential households is a non-pressure drainage pipeline, viruses enter the source of the drainage pipeline and are only drained by sanitary appliances such as a washbasin, a toilet or a shower, the drainage duration is short, and the drainage quantity is limited. Due to the randomness of sanitary ware usage, the water flow in the source drain line of a residential building is not like a full pipe configuration of a pressurized water pipe, but is a discontinuous non-full pipe gravity flow. In order to ensure the smooth drainage of the gravity drainage pipe, the drainage in the non-full gravity drainage pipe has a free water surface, and the maximum filling degree of the gravity drainage pipe is generally 0.5-0.6 according to the specification. The gravity flow of the non-full pipe provides the power for the flow of the drainage water by the potential energy formed by the laying gradient of the pipeline, and any bulge or fixed foreign matter in the gravity drainage pipe can influence the smoothness of the drainage water and even eliminate the power for the flow of the gravity drainage water.

In view of the characteristics of the water flow in the gravity drainage pipe at the drainage source of the residential building, the ultraviolet disinfection lamp set 3 of the drainage disinfection device 100 is provided with the quartz glass tubes 2, and the quartz glass tubes are arranged along the arc to irradiate the water body, namely, the water body is disinfected by adopting an external irradiation mode. The ultraviolet rays for disinfecting by irradiating outside water must effectively penetrate through the water pipe to play the role of disinfection. The ultraviolet ray has weak penetrating ability, and can not penetrate through metal or plastic pipes and common glass pipes, so the quartz glass pipe 2 adopted by the invention meets the penetrating requirement of the ultraviolet ray. The quartz glass tube 2 has a transmittance of more than 80% in the ultraviolet spectrum region, and the quartz glass tube 2 also has excellent physicochemical properties such as high temperature resistance, corrosion resistance, good thermal stability, good light transmittance, good electrical insulation property and the like. Meanwhile, the ultraviolet disinfection lamp set 3 is installed outside water, so that regular cleaning and maintenance are facilitated.

Referring to fig. 1, the drain disinfection apparatus 100 of the present invention further includes a pipe joint 4 disposed at two ends of the housing 1 and the quartz glass pipe 2, wherein the housing 1 and the quartz glass pipe 2 are fixedly mounted at an inner side of the pipe joint 1, and a drain pipe 200 is transversely connected to an outer side of the pipe joint 1 to allow water to flow into or out of the quartz glass pipe 2. The pipe joint 4 is arranged to fix the elements in the drainage disinfection device 100 and connect the quartz glass pipe 2 and the drainage pipeline 200, so that the water in the drainage pipeline 200 can smoothly enter and exit the quartz glass pipe 2.

The water pipeline of the drainage disinfection device 100 of the invention adopts the quartz glass tube 2, the inside of the quartz glass tube 2 is smooth, and the quartz glass tube is irradiated by ultraviolet rays all the year round without breeding biological films.

The drainage disinfection device 100 of the invention is arranged between the drainage pipeline of each set of housing and the public pipeline by adopting the ways of open installation or embedded in a cushion layer, and the like according to the requirements, such as being arranged on the drainage pipeline behind a water seal elbow of a toilet.

After the drainage disinfection device 100 is arranged on a drainage pipeline 200 of each set of housing of a building, water discharged by residents flows in the quartz glass tube 2, and under the irradiation action of the ultraviolet disinfection lamp group 3, pathogens such as viruses, bacteria and other microorganisms in water are killed in time, so that the aim of disinfecting the source of drainage is fulfilled, and harmful components such as viruses are prevented from being diffused through a drainage system.

Preferably, as shown in fig. 1, the quartz glass tube 2 is transversely provided with a downward slope i from the water inlet end to the water outlet end in the housing 1.

The arrangement of the gradient i of the quartz glass tube 2 ensures that dirt is not easy to precipitate on the tube wall of the quartz glass tube 2, and dirt attached to the tube wall is also easy to drain and wash away, thereby avoiding hindering the ultraviolet rays from being injected into water and reducing the efficiency of the ultraviolet lamp.

Specifically, as shown in fig. 2, the ultraviolet sterilizing lamp set 3 in the drain sterilizing device 100 of the present invention includes a plurality of ultraviolet sterilizing lamps 31 arranged radially at intervals in the lower semicircular arc of the outer wall of the quartz glass tube 2.

A plurality of fixing seats 11 arranged in an arc shape are arranged in the shell 1, and one ultraviolet disinfection lamp 31 is installed on each fixing seat 11.

Because the drainage pipeline 200 is a gravity drainage pipeline, and the water body in the drainage pipeline is not full of the gravity flow, the invention arranges a plurality of ultraviolet disinfection lamps 31 of the ultraviolet disinfection lamp group 3 on the lower semicircle of the bottom of the outer wall of the quartz glass tube 2, and the disinfection requirement can be met by irradiating the water body along the arc arrangement.

With continuing reference to fig. 1 and fig. 3, the two ends of the housing 1 are provided with connecting flanges 12, the pipe joint 4 includes a pipe sleeve 41 and a fixing flange 42 arranged along the radial direction of the pipe sleeve 41, the fixing flange 42 of the pipe joint 4 is bolted to the connecting flange 12 of the housing 1, the inner side 411 of the inner wall of the pipe sleeve 41 is tightly fitted to the outer wall of the quartz glass pipe 2 and is arranged on the sealing ring 6, and the outer side 412 of the inner wall of the pipe sleeve 41 is used for sealing and matching with the outer wall of the drainage pipeline 200. Namely, the pipe joint 4 of the present invention is fixedly connected to the housing 1 by the fixing flange 42, the quartz glass pipe 2 is installed and fixed by fitting the quartz glass pipe 2 into the pipe sleeve 41, and the pipe sleeve 41 is further connected to the drain pipe 200. The space between the pipe sleeve 41 and the quartz glass tube 2 is also sealed by a sealing ring 6, so that water in the drainage pipeline 200 is prevented from entering the cavity 10 of the shell 1, and the ultraviolet disinfection lamp group 3 is prevented from being damaged by water entering.

Further, a retainer ring 43 is radially provided on the inner wall of the socket 41, the inner side of the retainer ring 43 abuts against the end of the silica glass tube 2, and the outer side of the retainer ring 43 abuts against the end of the drain pipe 200. The arrangement of the retainer ring 43 has the functions of limiting and fixing the quartz glass tube 2 and the drainage pipeline 200, so as to prevent the quartz glass tube 2 from moving transversely, and simultaneously prevent the drainage pipeline 200 from pushing the quartz glass tube 2 to influence the installation during the installation.

The outer surface of the shell 1 of the drainage disinfection device 100 of the invention is provided with the control circuit 5 which is electrically connected with the ultraviolet disinfection lamp group 3.

The control circuit 5 is provided with a control panel or a switch for controlling the on and off of the ultraviolet disinfection lamp set 3. The control panel may be provided with a control screen.

Thus, when the drain disinfection device 100 of the present invention is used, the ultraviolet disinfection lamp set 3 can be turned on manually or automatically through the control panel or switch when a user enters a toilet to use a sanitary ware, so as to shorten the service life of the ultraviolet disinfection lamp set 3, prolong the service life of the ultraviolet disinfection lamp set 3, and save electric energy.

Preferably, as shown in fig. 4 to 5, the quartz glass tube 2 of the present invention has an axial access slot 21 formed at the outer portion thereof, and the access slot 21 is hermetically installed with a rubber sealing strip 22.

The upper part of the quartz glass tube 2 is provided with a maintenance seam 21 which is sealed by a rubber sealing strip 22 at ordinary times, and the quartz glass tube 2 can be maintained conveniently by opening the quartz glass tube with a tool to clean the quartz glass tube when needed.

Referring to fig. 6, an application scenario of the drainage disinfection device 100 of the present invention is shown, specifically, the drainage disinfection device 100 of the present invention is installed on a drainage horizontal pipe of each set of building, and the water body disinfected by the drainage disinfection device 100 is connected to a drainage vertical pipe of the building to an underground drainage system. By adopting the drainage disinfection device 100, the drainage system of the building is sterilized and disinfected at the source of drainage, so that viruses are prevented from being diffused in the building through a drainage pipeline, and the epidemic of infectious diseases is avoided.

The drainage disinfection device 100 and the drainage system using the drainage disinfection device 100 are particularly suitable for drainage systems of buildings such as various hospitals, schools, old people care buildings, intensive public buildings and the like, are also suitable for residential districts with high drainage safety requirements, and can be applied to municipal drainage pipelines along with the improvement of product series. The technique can also be applied to water supply and other pipe networks for conveying liquid to be disinfected.

The drainage disinfection device 100 provided by the embodiment of the invention is characterized in that a shell 1, a quartz glass tube 2 arranged in the shell 1, an ultraviolet disinfection lamp group 3 arranged in the shell 1 and surrounding the quartz glass tube 2 and arranged outside the quartz glass tube 2, and a pipe joint 4 arranged at two ends for fixing the shell 1 and the quartz glass tube 2 are arranged, when in use, the drainage disinfection device 100 is transversely arranged on a drainage pipeline 200 connected with sanitary ware in each set of housing of a building through the pipe joint 4, the ultraviolet rays emitted by the ultraviolet disinfection lamp group 3 penetrate through the quartz glass tube 2 to disinfect the sewage and wastewater flowing through the quartz glass tube 2, so that pathogens such as viruses, bacteria and the like in the sewage and wastewater are killed, therefore, the drainage source of the residents in each set of the housing of the building is disinfected, pathogens are prevented from being transmitted to other residents of the building through the drainage system, and the pandemic of infectious diseases is avoided.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A drain disinfection apparatus for a drain pipe system, said drain disinfection apparatus being transversely installed in a drain pipe of each housing of a building, comprising:

a housing;

2. A drain disinfection apparatus as claimed in claim 1, wherein said quartz glass tube is provided with a downward slope in the housing from the water inlet end to the water outlet end.

3. The drain disinfection apparatus of claim 1, wherein the ultraviolet disinfection lamp set comprises a plurality of ultraviolet disinfection lamps radially spaced in a lower semicircular arc of an outer wall of the quartz glass tube;

4. The drain water disinfection apparatus of claim 1, wherein the housing is provided at both ends thereof with connection flanges, the pipe joint comprises a pipe sleeve and fixing flanges arranged along a radial direction of the pipe sleeve, the fixing flanges of the pipe joint are bolted to the connection flanges of the housing, an inner side of an inner wall of the pipe sleeve is tightly fitted to an outer wall of the quartz glass pipe and is provided to the sealing ring, and an outer side of the inner wall of the pipe sleeve is used for sealing engagement with an outer wall of the drain pipe.

5. A drain disinfection apparatus according to claim 4, characterized in that the inner wall of said pipe sleeve is further provided with a collar radially, the inner side of said collar abutting against the end of the quartz glass tube and the outer side of said collar abutting against the end of the drain pipe.

6. A drain disinfection device as claimed in claim 1, wherein said control circuit is disposed on an outer surface of said housing and electrically connected to said ultraviolet disinfection lamp bank;

7. The drain water disinfection device according to claim 1, wherein a service seam is axially formed outside the quartz glass tube, and a rubber sealing strip is hermetically mounted on the service seam.