CN106988403B

CN106988403B - A kind of odour-proof floor drain

Info

Publication number: CN106988403B
Application number: CN201710286983.3A
Authority: CN
Inventors: 霍永军
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-04-27
Filing date: 2017-04-27
Publication date: 2019-06-18
Anticipated expiration: 2037-04-27
Also published as: CN106988403A

Abstract

The invention discloses a kind of floor drains, comprising: main body is formed with cavity；Deflector hole is offered in the middle part of partition in cavity；The upper end of stator core is formed with the plugging cap with spherical surface, and lower end is formed with blind hole；Guide post is arranged at the bottom of cavity, and guide post stretches in blind hole；Rotor set, is set on stator core；Rotor set is configured to motor generator with stator core；Battery；At least one helical guide groove at least is offered on the outer wall of rotor set, so that the outer wall of rotor set and the chamber wall of cavity surround helical duct, when Yi Dangshui flows through helical duct, water-driven rotor set rotation, motor generator is used as generator with to charge the battery；Spring is provided between the upper end of guide post and the bottom of blind hole, spring is for making plugging cap block deflector hole with certain pretightning force.The present invention, which flows through helical duct using water, makes rotor set rotation, to realize power generation.The present invention being capable of deodorization under the premise of not influencing draining by the cooperation of plugging cap and spring.

Description

A kind of odour-proof floor drain

Technical field

The present invention relates to plumbing technical field more particularly to a kind of floor drains for draining.

Background technique

Floor drain is the important interface of connection water end (W.E.) and sewerage system.Floor drain in the prior art is easy because it is internal Accumulate the substances such as solids and hair, is easy to result in blockage to itself or drainage.

To solve the above problems, the Chinese patent of Patent No. CN202124901U provides a kind of energy conservation and environmental protection unimpededly It leaks, is provided with fixed mill, rotary grinding disk, motor, generator, battery and annular diversion trench in the floor drain.Battery It is charged for motor to drive rotary grinding disk to rotate relative to fixed mill to pulverize solids, fixture passes through annular after being grinded up Diversion trench accelerates with the blade of surge generator, and blade rotates and makes electrical power generators, so as to charge the battery, battery is used In for motor.

The floor drain of above structure pulverizes solids by mill, to effectively prevent solids blocking floor drain and row Water pipe, and the rotation of blade is realized using water and the fixture being grinded up to the impact of blade, to realize electrical power generators And to charge the battery, using as the power for rolling solids.

However, rotate blade the impact of blade using water and solids, water and solids are by the kinetic energy of its own The efficiency for being converted to the kinetic energy of blade is very low, and generating efficiency and effect are simultaneously bad, and water and solids are inevitable to the impact of blade Cause blade larger vibration, this vibration is unfavorable to the service life of blade and generator.

In addition, the floor drain of above-mentioned patent does not have deodorant function.

Summary of the invention

For the above-mentioned technical problems in the prior art, the present invention provides a kind of odour-proof floor drains.

In order to solve the above technical problems, the embodiment of the present invention the technical solution adopted is that:

A kind of odour-proof floor drain, comprising:

Main body is formed with upper end opening, the cavity that lower end is connected to drainpipe；Partition, institute are provided in the cavity It states partition and the cavity is divided into upper chamber and lower chambers, offer deflector hole in the middle part of the partition；

Stator core is arranged in the lower chambers, and the upper end of the stator core is formed with the plugging cap with spherical surface, institute The lower end for stating stator core is formed with blind hole；The bottom of the cavity position opposite with the blind hole is provided with guide post, described Guide post stretches in the blind hole；

Rotor set is set on the stator core, and can be rotated relative to the stator core；The inner wall of the rotor set A pair of electromagnetism pair that can generate electromagnetic excitation is provided on the upper outer wall with the stator core so that rotor set with it is described Stator core is configured to motor generator；And

Battery is used for when the motor generator is used as motor, for the rotation power supply of rotor set；And work as When the motor generator is used as generator, the rotation of the rotor set makes the battery electric power storage；Wherein,

At least the rotor set outer wall on offer at least one helical guide groove so that the rotor set outer wall with The chamber wall of the cavity surrounds helical duct, and when Yi Dangshui flows through the helical duct, the set of rotor described in the water-driven turns Dynamic, the motor generator is used as generator for battery charging；

Spring is provided between the upper end of the guide post and the bottom of the blind hole, the spring is for making the closure Cap blocks the deflector hole with certain pretightning force.

Preferably, the floor drain further includes pocket；Vertical Channel is offered from the upper end of the stator core to its lower end, So that the indoor water energy of epicoele is enough able to enter the lower chambers by the Vertical Channel；The outer of the pocket is solid It is scheduled at the upper port of the Vertical Channel, openable and closable openning together, the phase of the openning are formed on the bottom of the pocket Two lips are provided with the magnetic stripe that can be mutually attracted, when two magnetic stripes are attracted, two magnetic stripes can also be surrounded at least One for the hollow-out parts passed through that supply water；Wherein:

The opening state of the deflector hole and the precedence relationship of the opening state of the openning are configured to:

The deflector hole is opened prior to the openning.

Preferably, the upper chamber is provided with spacer, and the chamber wall interference fit of the spacer and the upper chamber is described Partition is shaped in the lower end of the spacer.

Preferably, the floor drain further includes bottom cover, the bottom cover be arranged in the bottom of the main body and with the main body spiral shell Line connection, the guide post are arranged on the bottom cover, and the bottom cover offers apopore.

Preferably, the upper end button of the main body is equipped with upper cover, offers inlet opening on the upper lid.

Preferably, corresponding a plurality of spiral is offered on the outer wall of the rotor set and in the chamber wall of the cavity Guide groove is to form a plurality of helical duct.

Compared with prior art, the beneficial effect of odour-proof floor drain provided by the present invention is:

1, the present invention converts the kinetic energy of the flowing of water and pressure potential to the kinetic energy of rotor set, thus realize power generation, In compared with the prior art in such a way that water slug blade makes blade rotate to realize power generation, kinetic energy and the potential energy benefit of water It is higher with rate, it is often more important that: rotor covers more by the effect of peripheral force, and is less subject to the effect of axial force, thus Reduce water to the downward impact that rotor covers, the rotation of rotor set is more steady, to make to be formed by motor generator The service life is longer.

2, the present invention being capable of deodorization under the premise of not influencing draining by the cooperation of plugging cap and spring.

Detailed description of the invention

(deflector hole and openning are in closing shape to the structural schematic diagram for the floor drain that Fig. 1 provides for the embodiment of the present invention State).

Fig. 2 is the A direction view of Fig. 1.

Fig. 3 is the B direction view of Fig. 1.

Fig. 4 is the enlarged view of the Local C of Fig. 1.

Fig. 5 is the D direction view of Fig. 4.

(deflector hole is in the open state, and openning is in for the structural schematic diagram for the floor drain that Fig. 6 provides for the embodiment of the present invention Closed state).

(deflector hole and openning are in open shape to the structural schematic diagram for the floor drain that Fig. 7 provides for the embodiment of the present invention State).

Fig. 8 is the enlarged view of the local E of Fig. 7.

Fig. 9 is the F direction view of Fig. 8.

In figure:

10- main body；11- upper chamber；12- lower chambers；20- stator core；21- plugging cap；22- Vertical Channel；23- blind hole； 30- rotor set；40- electromagnetism pair；50- helical duct；51- helical guide groove；60- pocket；61- ring bodies；62- magnetic stripe；63- is engraved Empty portion；70- upper cover；The inlet opening 71-；80- bottom cover；81- apopore；82- guide post；90- spring；100- spacer；101- partition； 102- deflector hole；110- bearing；120- sealing ring；130- battery.

Specific embodiment

Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing and specific embodiment party Formula elaborates to the present invention.

As shown in figs 1-9, embodiment of the invention discloses a kind of odour-proof floor drain, the floor drain is mountable to be needed in bathroom etc. On the ground of draining.The floor drain includes main body 10, stator core 20, rotor set 30 and battery 130.Main body 10 is formed with upper end The cavity that open, lower end is connected to drainpipe is provided with partition 101 in cavity, and cavity is divided into 11 He of upper chamber by partition 101 Lower chambers 12 offer deflector hole 102 in the middle part of partition 101, and the water flowed into upper chamber 11 from 10 upper end of main body passes through deflector hole 102 can flow into lower chambers 12, subsequently into drainpipe；Stator core 20 is arranged in lower chambers 12, the upper end of stator core 20 Be formed with the plugging cap 21 with spherical surface, the plugging cap 21 for block deflector hole 102 so that upper chamber 11 and lower chambers 12 every Disconnected, the lower end of stator core 20 is formed with blind hole 23；The bottom of the cavity position opposite with blind hole 23 is provided with guide post 82, this is led It is radially formed with key to column 82, guide post 82 stretches in blind hole 23, and the key is for limiting the rotation of stator core 20, and stator Core 20 is slided in blind hole 23 by guide post 82 can be realized vertical shift, lead so that plugging cap 21 be made to block and moving up Discharge orifice 102, and deflector hole 102 is opened and moving down；Rotor set 30 is set on stator core 20, rotor set 30 and stator core Bearing 110 and sealing ring 120 are installed between 20, bearing 110 can make rotor cover the rotation of 30 relative stator cores 20, sealing ring 120 limit water entry into the annular gap between rotor set 30 and stator core 20；Rotor set 30 inner wall on stator core 20 A pair of electromagnetism that can generate electromagnetic excitation is provided on outer wall to 40, so that rotor set 30 is configured to electronic hair with stator core 20 Motor；Battery 130 is used for when motor generator is used as motor, for the rotation power supply of rotor set 30；And work as dynamoelectric and power generation When machine is used as generator, the rotation of rotor set 30 makes 130 electric power storage of battery.Key of the invention is: 1) at least in rotor set At least one helical guide groove 51 is offered on 30 outer wall, so that the outer wall of rotor set 30 and the chamber wall of cavity surround spiral and lead to Road 50.In this way, the water is by flowing in helical duct 50 to drive rotor after the water of floor drain upper end enters helical duct 50 30 rotation of set, at this point, motor generator is used as generator, thus generate electricity because of the rotation of rotor set 30, generated electricity It can be stored in battery 130；2) spring 90, the spring 90 are provided between the upper end of guide post 82 and the bottom of blind hole 23 So that plugging cap 21 blocks deflector hole 102 with certain pretightning force.

It should be noted that: above-mentioned electromagnetism should be construed to form the permanent magnet and coil of pairing, the permanent magnet to 40 It is generated electricity with coil by electromagnetic induction principle realization and electronic.It can make that there is above-mentioned electromagnetism to cover 30 and stator core to 40 rotor 20 technologies for forming motor generator have been the prior arts, e.g., applied to the motor generator on energy-saving bicycle, are had Electric functions simultaneously have generating function simultaneously.Therefore, it is no longer discussed in detail herein and 30 Hes is covered to 40 rotor with above-mentioned electromagnetism The concrete details technology of the formation motor generator of stator core 20.

It is of the invention it is critical that: so that rotor set 30 and the chamber wall of the cavity of main body 10 is formed helical duct 50, To which when water passes through the helical duct 50, driving rotor set 30 is rotated to realize generating function.

The present invention converts the kinetic energy of the flowing of water and pressure potential to the kinetic energy of rotor set 30, thus realize power generation, In compared with the prior art in such a way that water slug blade makes blade rotate to realize power generation, kinetic energy and the potential energy benefit of water It is higher with rate, it is often more important that: rotor set 30 is less subject to the effect of axial force more by the effect of peripheral force, from And reducing water to the downward impact of rotor set 30, the rotation of rotor set 30 is more steady, to make to be formed by electronic hair The service life is longer for motor.

As described above, floor drain of the invention have power generation and storage function, the electric energy stored can with multiple use, Such as one light bulb (floor-lamp) can be set in the upper end of floor drain, battery 130 is the bulb powered, preferred real at of the invention one It applies in example, the electric energy stored is when block is fastened between rotor set 30 and chamber wall, for driving 30 rotation of rotor set (at this point, motor generator is used as motor) makes the steering when steering and power generation of rotor set 30 on the contrary, to by turning The rotation of sub-set 30 and block is pulverized.Preferably, the edge of helical guide groove 51 can be arranged to sharp cutter, such as bored The cutting edge of head, cuts block so as to more quickly broken.

As described above, spring 90 makes plugging cap 21 with certain pretightning force envelope when not having water to enter upper chamber 11 Get lodged in deflector hole 102；When water enters upper chamber 11 from the upper end of main body 10 and enters the water in upper chamber 11 to plugging cap 21 When downward pressure is greater than the pretightning force, spring 90 is compressed, and plugging cap 21 moves down, and deflector hole 102 is opened.

As described above, as shown in Figure 1, when do not have on flooring water flow into floor drain main body 10 in cavity when, Plugging cap 21 blocks deflector hole 102, to effectively prevent drainpipe, (attached drawing is not shown, under the drainpipe and main body 10 End connection) in sewage or foul smell by deflector hole 102 enter the room ground, and pollution is generated to flooring；Work as interior When the water on ground is entered in upper chamber 11, as shown in Figure 6 and Figure 7, deflector hole 102 is opened, and water enters cavity of resorption by deflector hole 102 Room 12, and enter drainpipe through lower chambers 12, it is discharged through drainpipe.

As described above, the water in upper chamber 11 enables to the opening of deflector hole 102 to depend in which kind of liquid level The coefficient of elasticity and initial compression amount of spring 90, the coefficient of elasticity and initial compression amount of spring 90 are bigger, can open and lead The liquid level of the water of discharge orifice 102 is higher, and the coefficient of elasticity and initial compression amount of spring 90 are smaller, can open deflector hole The liquid level of 102 water is lower.Correspondingly, the coefficient of elasticity of spring 90 and initial compression amount are bigger, and plugging cap 21 blocks The pretightning force of deflector hole 102 is bigger, and the coefficient of elasticity and initial compression amount of spring 90 are smaller, and plugging cap 21 blocks deflector hole 102 pretightning force is smaller.Therefore, the coefficient of elasticity and initial compression amount for selecting suitable spring 90, can make deflector hole 102 The liquid level of water be unlikely to excessively high, and pretightning force is also unlikely to too small.It preferably, as shown in fig. 6, can be by the bullet of spring 90 Property coefficient and initial compression amount are designed to that water conservancy diversion can be made when the liquid level of water is the half of 11 height of upper chamber It opens in hole 102.

If the pretightning force of plugging cap 21 is big, although plugging cap 21 can be made preferably to block deflector hole 102, floor drain is utilized When draining, (the water on flooring at this time when deflector hole 102 is not easy to open or even water is already higher than the height of upper chamber 11 Cannot be introduced into upper chamber 11 and be discharged), deflector hole 102 is still not switched on, to cannot play a role in the drainage or drain because of envelope Blocking cap 21 and have some setbacks；If the pretightning force of plugging cap 21 is small, although can make to drain smooth, plugging cap 21 is to deflector hole 102 Closure is not tight enough, so that sewage and foul smell be made to be easily accessible upper chamber 11 and flooring.

To solve the above problems, in a preferred embodiment of the invention, such as Fig. 1, and Fig. 4, Fig. 5, Fig. 8, Fig. 9 are combined Shown, floor drain further includes pocket 60；Vertical Channel 22 is offered from the upper end of stator core 20 to its lower end, so that upper chamber 11 Interior water energy enough passes through Vertical Channel 22 and is able to enter lower chambers 12；The outer of pocket 60 is fixed on a ring bodies 61, should Ring bodies 61 is installed at the upper port of Vertical Channel 22, i.e. the upper end of stator core 20, and the bottom of pocket 60 is formed together can The openning of folding, the two opposite lips of openning are provided with the magnetic stripe 62 that can be mutually attracted, when two magnetic stripes 62 are attracted, two magnetic Item 62 can also surround at least one for the hollow-out parts 63 passed through that supply water；And make the opening action and openning of deflector hole 102 The sequencing of opening action be configured to: deflector hole 102 is opened prior to openning.In this way, into the water in main body 10 first into Enter pocket 60 and held by pocket 60, since pocket 60 is connected on stator core 20, when the weight of the water in pocket 60 Power completely or partially overcomes the pretightning force of plugging cap 21, and to be unlikely to water in upper chamber 11 or have lower liquid level Water when, deflector hole 102 just can be opened in time.

As described above, the structure provided with pocket 60 can increase relative to the structure for being not provided with pocket 60 Pretightning force, increased pretightning force by enter pocket 60 (self weight that pocket 60 might as well be ignored) interior water gravity carry out It is completely counterbalanced by or partial offset, to increase pretightning force compared to the structure for being not provided with pocket 60, and is not improved The liquid level for the water in upper chamber 11 for opening deflector hole 102.

It should be noted that: the gravity for the water for selecting the magnetic force of magnetic stripe 62 that need to can be held according to pocket 60 is selected It selects.A kind of selection is that the magnetic force of magnetic stripe 62 should select are as follows: when pocket 60 fills with water, the reversed drawing of two lips of openning Power can overcome the magnetic force of magnetic stripe 62, i.e. the magnetic force of magnetic stripe 62 should select are as follows: when pocket 60 fills with water, the lucky energy of openning It is enough to open, at this point, the Prestress design of plugging cap 21 is at the gravity for filling with water less than pocket 60；Another option is that magnetic stripe 62 Magnetic force should be selected as, when pocket 60 filled with water and water in upper chamber 11 at a certain altitude, two lips of openning Reversal interlocking relay can overcome the magnetic force of magnetic stripe 62, i.e. the magnetic force of magnetic stripe 62 should select are as follows: when pocket 60 filled with water and Water in upper chamber 11 at a certain altitude, openning can be opened just, at this point, the Prestress design of plugging cap 21 is at bigger The gravity of water is filled in pocket 60, and is less than downward pressure of the water to plugging cap 21 for the liquid level for opening openning.

For the first above-mentioned selection, the smoothness of the draining of floor drain of the invention can be greatly improved.Reason It is: initially enters pocket 60 into the water in main body 10, when the water in pocket 60 does not fill with also, i.e., in upper chamber 11 also When non-water, the gravity of the water in pocket 60 has overcome the pretightning force of plugging cap 21 and has opened deflector hole 102, works as pocket After 60 water are full, the openning of pocket 60 is opened, and water enters lower chambers 12 from the openning of helical duct 50 and pocket 60 simultaneously, and It is discharged from lower chambers 12, i.e., moisture two-way is discharged, to improve the sensitivity of the opening of plugging cap 21, improves the smooth of draining Property, which is suitable for the larger situation of flooring water.

For above-mentioned second select, can more improve rotor set 30 rotation stability and water kinetic energy and Potential energy is the efficiency that rotor covers 30 rotational kinetic energies, and then improves generating efficiency.Reason is: first into the water in main body 10 It is introduced into pocket 60, and after 60 water of pocket is full, into upper chamber 11, the liquid level in upper chamber 11 is made to reach a certain height When, the water and the water in pocket 60 of upper chamber 11 overcome pretightning force and open deflector hole 102, the water in upper chamber 11 into Enter helical duct 50, since the water in upper chamber 11 has certain liquid height, allows the water to full of helical duct 50, thus It will not make water that can not generate impact to rotor set 30 full of helical duct 50 because measuring less, to improve 30 rotation of rotor set Stability, and improve energy conversion efficiency, that is, improve generating efficiency.It is smaller that the selection is suitable for flooring water And often result in the case where can not retaining in upper chamber 11.Even if in addition, when experience opening deflector hole 102 and because of flooring water When amount increases and 11 liquid level of upper chamber is still caused to continue the case where rising, openning can be opened and be enabled water to from openning at this time Discharge a part.

The advantage of pocket 60 in floor drain of the invention is:

Pocket 60 can improve the pretightning force of plugging cap 21 in the case where not influencing the smoothness of draining of floor drain, Thus the ability that the counnter attack for improving floor drain is smelly.

Pocket 60 in the case where not reducing the pretightning force of plugging cap 21, can be improved the opening of plugging cap 21 Aperture and sensitivity, to improve the smoothness and sensitivity of the draining of floor drain.

Pocket 60 can be drained together by openning with helical duct 50, improve the smoothness of draining, especially It is to encounter the larger situation of water, can more shows its advantage.

It should be noted that: the statement of above-mentioned " deflector hole 102 is opened prior to openning " refers to: pretightning force and magnetic force Design should meet first make deflector hole 102 open, then can just openning be made to open.This point can be by calculating and by multiple Test obtains.

The shape of magnetic stripe 62 should also be designed to that, when two magnetic stripes 62 are attracted, two magnetic stripes 62 can surround at least one just The purpose of hollow-out parts 63, such setting is: when having no or only that less water enters upper chamber 11 and the water cannot make to lead When discharge orifice 102 is opened, water enters pocket 60 and enters lower chambers 12 by hollow-out parts 63 and be discharged.In addition, the hollow-out parts 63 It can prevent 60 water of pocket.

It should be noted that: the hollow-out parts 63 are a lesser hole, which is unlikely to make foul smell via lower chambers 12, the bottom of stator core 20 enters Vertical Channel 22, and enters upper chamber 11 and interior through the hole, therefore, the hollow-out parts 63 and it is unlikely to enter the room foul smell.

Preferably, the upper chamber 11 is provided with spacer 100, the chamber wall mistake of the spacer 100 and the upper chamber 11 It is full of cooperation, the partition 101 is shaped in the lower end of the spacer 100.

Preferably, as shown in figure 3, the floor drain further includes bottom cover 80, the bottom of the main body 10 is arranged in the bottom cover 80 Portion is simultaneously threadedly coupled with the main body 10, and the guide post 82 is arranged on the bottom cover 80, and the bottom cover 80 offers water outlet Hole 81.

Preferably, it as shown in Fig. 2, the upper end button of the main body 10 is equipped with upper cover 70, offers in the upper cover 70 into water Hole 71.

Preferably, corresponding a plurality of spiral shell is offered on the outer wall of the rotor set 30 and in the chamber wall of the cavity Guide groove 51 is revolved to form a plurality of helical duct 50.

Above embodiments are only exemplary embodiment of the present invention, are not used in the limitation present invention, protection scope of the present invention It is defined by the claims.Those skilled in the art can within the spirit and scope of the present invention make respectively the present invention Kind modification or equivalent replacement, this modification or equivalent replacement also should be regarded as being within the scope of the present invention.

Claims

1. a kind of odour-proof floor drain characterized by comprising

Main body is formed with upper end opening, the cavity that lower end is connected to drainpipe；Be provided with partition in the cavity, it is described every The cavity is divided into upper chamber and lower chambers by plate, offers deflector hole in the middle part of the partition；

Stator core is arranged in the lower chambers, and the upper end of the stator core is formed with the plugging cap with spherical surface, described fixed The lower end of sub- core is formed with blind hole；The bottom of the cavity position opposite with the blind hole is provided with guide post, the guiding Column stretches in the blind hole；

Rotor set is set on the stator core, and can be rotated relative to the stator core；On the inner wall of rotor set with A pair of electromagnetism pair that can generate electromagnetic excitation is provided on the outer wall of the stator core, so that rotor set and the stator Core is configured to motor generator；And

Battery is used for when the motor generator is used as motor, for the rotation power supply of rotor set；And when described When motor generator is used as generator, the rotation of the rotor set makes the battery electric power storage；Wherein,

At least the rotor set outer wall on offer at least one helical guide groove so that the rotor set outer wall with it is described The chamber wall of cavity surrounds helical duct, when Yi Dangshui flows through the helical duct, the set rotation of rotor described in the water-driven, and institute Motor generator is stated as generator as battery charging；

Be provided with spring between the upper end of the guide post and the bottom of the blind hole, the spring for make the plugging cap with Certain pretightning force blocks the deflector hole.

2. odour-proof floor drain according to claim 1, which is characterized in that the floor drain further includes pocket；From the stator The upper end of core to its lower end offers Vertical Channel, so that the indoor water energy of the epicoele enough can be by the Vertical Channel Enter the lower chambers；The outer of the pocket is fixed at the upper port of the Vertical Channel, the bottom shape of the pocket At openable and closable openning together, opposite two lips of the openning are provided with the magnetic stripe that can be mutually attracted, when two magnetic stripes When actuation, two magnetic stripes can also surround at least one for the hollow-out parts passed through that supply water；Wherein:

The deflector hole is opened prior to the openning.

3. odour-proof floor drain according to claim 1, which is characterized in that the upper chamber is provided with spacer, the spacer with The chamber wall of the upper chamber is interference fitted, and the partition is shaped in the lower end of the spacer.

4. odour-proof floor drain according to claim 1, which is characterized in that the floor drain further includes bottom cover, the bottom cover setting The main body bottom and connect with the main body screw, the guide post is arranged on the bottom cover, and the bottom cover opens up There is apopore.

5. odour-proof floor drain according to claim 1, which is characterized in that the upper end of main body button is equipped with upper cover, it is described on It covers and offers inlet opening.

6. odour-proof floor drain according to claim 1, which is characterized in that the appearance on the outer wall of the rotor set with the cavity Corresponding a plurality of helical guide groove is offered in cavity wall to form a plurality of helical duct.