CN213114842U

CN213114842U - Sewer backflow prevention device

Info

Publication number: CN213114842U
Application number: CN202020412254.5U
Authority: CN
Inventors: 许诺; 吴文涛; 许昌友
Original assignee: Jiangsu Meijia Motor Co ltd
Current assignee: Jiangsu Meijia Motor Co ltd
Priority date: 2020-03-27
Filing date: 2020-03-27
Publication date: 2021-05-04
Anticipated expiration: 2030-03-27

Abstract

The utility model discloses a sewer backflow prevention device, which is arranged in a sewer elbow, the backflow prevention device comprises an inner pipe which is matched with the sewer elbow and is arranged, a tubular structure which allows liquid to pass through is arranged in the inner pipe, the tubular structure is arranged in the inner pipe and extends towards the direction of the sewer elbow, a rocking cover is arranged on a water inlet and a water outlet which are arranged at the side of the sewer elbow and is used for installing the tubular structure, and when the backflow prevention device is in a closed state, the rocking cover completely covers the water inlet and the water outlet; the utility model discloses it is fixed to adopt the torsional spring between rocking cover and inner tube, has strengthened the closure performance of device, makes it not receive any factor can both be perfect closed, and the use of torsional spring has improved the life of device, and intensity is high, and anti-oxidant, and is rust-resistant good, and the sound construction is reliable, and is not fragile.

Description

Sewer backflow prevention device

Technical Field

The utility model relates to a sewage equipment technical field, especially a sewage anti-reflux device.

Background

The sewer backflow-preventing pipe bending device is a measure for preventing a main water pipe and an auxiliary water pipe from remaining to generate reverse water, can isolate a main water tank and an auxiliary water tank of a sewer, carries out innocent treatment, and effectively avoids the problem that when drainage of the main water tank is not smooth, water pipes connected can overflow into the auxiliary water tank. At present, the launching backflow prevention device is realized through the balancing weight, but the bent pipe at the moment needs to be completely parallel to the ground, and the backflow prevention device cannot be inclined by any angle.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the to-be-solved technical problem of the utility model is to provide a offal anti-reflux device, the anti-reflux device anti-reflux among the prior art and the deodorant condition harsh, the main and auxiliary water pipe appears leading to water backward flow easily and the easy problem of damaging of device itself.

The technical scheme is as follows: sewer anti-reflux device, it is installed in the sewer return bend, this anti-reflux device include with the inner tube of sewer return bend cooperation installation, set up the tubular structure that lets liquid pass through in the inner tube, tubular structure arranges in the inner tube, and to the direction of sewer return bend extends the setting, the packing into of tubular structure the mouth of a river department of cominging in and going out of sewer return bend side installs the rocking cover, when anti-reflux device is in closed state, the rocking cover covers completely the mouth of a river of cominging in and going out.

Further, comprising:

the rocking cover comprises a body covering the water inlet and outlet and an installation shaft installed on the inner side wall of the inner pipe, and the two installation shafts are respectively arranged on two sides of the upper end of the body.

Further, comprising:

the inner tube inside wall of tubular structure top arranged with install axle complex mounting groove, the installation axle with mounting groove interference fit installs.

Further, comprising:

the bottom of body sets up to the arc that matches with the offal return bend inboard, just the bottom of body with the lower inside wall butt of offal return bend.

Further, comprising:

the outer side wall of the inner pipe is provided with an axial groove which is matched and installed with a positioning rib in the launching bent pipe.

Further, comprising:

the density of the material used by the rocking cover is not less than that of water.

Further, comprising:

the surface where the water inlet and outlet are located is arranged in the vertical direction.

Further, comprising:

the device also includes a torsion spring mounted on the mounting shaft.

Further, comprising:

the number of the torsion springs is set to be one which is arranged on the installation shaft at one side or two which are respectively arranged on the installation shafts at two sides.

Further, comprising:

the inner tube inner side wall above the tubular structure is provided with a boss, one rotating arm of the torsion spring is arranged on the body of the rocking cover, and the other rotating arm is arranged on the boss.

Has the advantages that: (1) the inner pipe of the drainage backflow preventer of the utility model is installed by matching the groove and the positioning rib in the bent pipe, so that the drainage backflow preventer is convenient to disassemble and assemble and clean; (2) the tubular structure and the rocking cover are installed in a matching way, when the pipeline is closed, the main pipeline and the auxiliary pipeline are sealed and isolated, water backflow can be prevented, odor can be prevented, when water is drained, the rocking cover is completely opened, the water is good in draining effect and not easy to block, and residue and foreign matter residue are not easy to influence the draining effect after long-term use; (3) adopt the torsional spring to fix between rocking cover and the inner tube, strengthened the closure performance of device, made it not receive any factor can both perfectly closed, the use of torsional spring has improved the life of device, and intensity is high, and anti-oxidant, rust-resistant good, the sound construction is reliable, and is not fragile.

Drawings

FIG. 1 is an exploded view of the device of the present invention without the torsion spring;

FIG. 2 is an internal structure view of the present invention without a torsion spring, with the rocking cover in a closed state;

FIG. 3 is a schematic view of the installation of the inner tube and the rocking cover when the present invention does not include a torsion spring;

FIG. 4 is a sectional view of the inner tube and the rocking cover when the present invention does not include a torsion spring;

FIG. 5 is an exploded view of the device of the present invention with the torsion spring installed;

FIG. 6 is a schematic view of the installation of the inner tube and the rocking cover when the torsion spring is installed in the present invention;

FIG. 7 is a sectional view of the inner tube and the rocking cover when the torsion spring is installed in the present invention

Fig. 8 is a sectional view of the rocking cover of the present invention in an open state.

The figure includes: the water inlet and outlet structure comprises an inner pipe 1, a tubular structure 11, a water inlet and outlet 111, a mounting groove 12, a boss 13, a groove 14, a rocking cover 2, a body 21, a mounting shaft 22, a torsion spring 3 and a sewer elbow 10.

Detailed Description

The utility model discloses a offal anti-reflux device, it is installed in offal return bend 10, as shown in fig. 1-4, this return bend can include multiple type interface, can with the dish washer, the gap, the water purifier is connected, this offal anti-reflux device has been installed, when there is not rivers, make return bend and other pipe keep apart and seal, when rivers are great, can carry out quick drainage, set up a location muscle that plays the positioning action at the inside wall of this return bend, this location muscle is installed with the cooperation of offal anti-reflux device's inner tube 1, the excircle diameter of inner tube 1 is less than the interior circle diameter of return bend 10, and axial recess 14 is seted up to 1 lateral wall of inner tube, a strengthening rib cooperation installation with the return bend, the installation is all simple with the dismantlement, operation such as convenience of customers washs.

Offer the tubular structure 11 that lets liquid pass through in the inner tube 1, tubular structure 11 arranges the inner tube 1 in to the installation direction of downing return bend 10 extends the setting, obtains a cross-section, the concrete shape of tubular structure 11 the utility model discloses do not restrict, set up to hollow tubular structure can, this well kenozooecium includes the water inflow outlet 111 that comes out of cominging in and going out. And a certain gap is arranged between the periphery of the tubular structure 11 and the inner side wall of the inner tube 1 for arranging other components. The rocking cover 2 is installed on the water inlet and outlet 111 on one side of the loading sewer elbow pipe 10 of the tubular structure 11, when the backflow preventer is in a closed state, the rocking cover 2 completely covers the water inlet and outlet 111, the surface where the water inlet and outlet 111 is located is a contact surface with the rocking cover 2, under the condition without a torsion spring, the arrangement in the vertical direction needs to be ensured, and the contact part around the water inlet and outlet 111 is smooth, so that the complete closure is ensured.

And in order to better cooperate the structure of offal return bend 10, the lower extreme of the face of intaking and discharging mouth of a river 111 place and the bottom of rocking the lid all can set up the arc structure that corresponds with the lower inside wall of offal return bend, nevertheless the bottom of rocking the lid need be less than the lower extreme of the face of intaking and discharging mouth of a river 111 place, and the most appropriate mode is that the bottom of rocking the lid and the lower inside wall butt of offal return bend leave the space between avoiding, lead to the closure incomplete.

The rocking cover 2 comprises a body 21 covering the water inlet and outlet 111 and a mounting shaft 22 mounted on the inner side wall of the inner tube 1, and the two mounting shafts 22 are respectively arranged on two sides of the upper end of the body 21. Arranged on the 1 inside wall of inner tube above the tubular structure 11 with installation axle 22 complex mounting groove 12, installation axle 22 and the installation of the 12 interference fit of mounting groove, consequently shake lid 2 and can pass through the mounting groove 12 closure or open, in this embodiment, this mounting groove can set up in a fixed part of the inside wall of inner tube, the setting up of this fixed part has been guaranteed to shake the lid and has been installed in the mounting groove, the realization shakes the lid and covers tubular structure's the mouth of a river 111 face of cominging in and going out completely, the length of two installation axles 22 is the same completely that does not necessarily set up on the body 21, can be according to the characteristics such as the groove width.

Shake the density of the material that lid 2 used and be not less than the density of water, shake lid 2 and inner tube 1 and be a counter weight relation, shake lid 2 weight great, can be better close, when rivers impact force is greater than and shakes when covering the dead weight, then shake the lid and open.

In a further embodiment of the invention, as shown in fig. 5-7, the device further comprises a torsion spring 3 mounted on the mounting shaft 22, the mounting shaft 22 being mounted in the mounting groove 12. The use of the torsion spring 3 overcomes the defect that the water inlet and outlet port 111 and the rocking cover can normally work only in a vertical state, and the limitation of the elasticity of the torsion spring is increased, and the angle between two rotating arms of the torsion spring is not less than 180 degrees, so that the elasticity of the torsion spring can be limited even if the inner pipe is installed in a bent pipe at other angles, and the rocking cover and the water inlet and outlet port 111 are in a closed state.

The torsion springs 3 may be one or two in number, and are mounted on the one-side mounting shaft 22 when the number is 1, and on the two-side mounting shafts 22 when two are employed, respectively.

As shown in fig. 5, in order to ensure that the torsion angle of the torsion spring 3 is not less than 180 degrees, bosses 13 are provided on the inner side wall of the inner tube 1 above the tubular structure 11, i.e., the body 21 and the bosses 13 are respectively provided on the upper and lower sides of the mounting shaft 22, one rotation arm of the torsion spring 3 is placed on the body 21 of the rocking cover 2, and the other rotation arm is placed on the bosses 13. In order to ensure that the rotating arm is completely attached to the boss 13, the boss 13 may be configured as a wedge structure or a fixed structure forming a certain angle with the inner side wall of the inner tube. When no water flow rushes down, the rocking cover is in a closed state, the closing performance is enhanced by the arrangement of the torsion spring, and when the impact force of the water flow is greater than the dead weight of the rocking cover and the torsion of the torsion spring, the rocking cover is opened.

The utility model discloses an operating principle is, the utility model discloses in contain the torsional spring and not contain the torsional spring all can realize the device's function, the principle is basically the same, here unified expression is down: when no water flow rushes down or the water flow is small, the rocking cover 2 seals the water inlet and outlet of the tubular structure under the self-weight or the elastic force of the torsion spring 3, so that the isolation between the water pipes is realized; when rivers are normal or great, the mechanism of this device is as shown in fig. 8, under the effect of rivers impact force, shakes lid 2 and overcomes self gravity or torsional spring 3's elasticity, shakes lid 2 bottom and breaks away from tubular structure 11's the mouth of a river of going in and out, forms great wash port quick drainage, and when rivers stopped the back again, torsional spring 3 kick-backs, shakes lid 2 and tubular structure 11 laminating once more, seals on tubular structure.

Claims

1. The utility model provides a offal anti-reflux device, its installs in offal return bend (10), its characterized in that, this anti-reflux device include with inner tube (1) of offal return bend (10) cooperation installation, tubular structure (11) that let liquid pass through have been seted up in inner tube (1), tubular structure (11) are arranged in inner tube (1), and to the direction of offal return bend (10) extends the setting, the packing into of tubular structure (11) install on the mouth of a river (111) of going out of offal return bend (10) side and shake lid (2), when anti-reflux device is in the closed condition, shake lid (2) and cover completely go out mouth of a river (111).

2. The sewage backflow prevention device according to claim 1, wherein said rocking cover (2) comprises a body (21) covering said water inlet/outlet port (111) and a mounting shaft (22) mounted to an inner sidewall of said inner pipe (1), said mounting shaft (22) comprising two, respectively disposed at both sides of an upper end of said body (21).

3. A sewer backflow prevention device according to claim 2, characterized in that a mounting groove (12) matched with the mounting shaft (22) is arranged on the inner side wall of the inner pipe (1) above the tubular structure (11), and the mounting shaft (22) is installed in an interference fit with the mounting groove (12).

4. A sewer backflow prevention device according to claim 2, characterized in that the bottom of the body (21) is provided in an arc shape matching the inside of the sewer elbow (10), and the bottom of the body (21) abuts against the lower inner side wall (101) of the sewer elbow (10).

5. A sewer backflow prevention device according to claim 1, characterized in that the outer side wall of the inner pipe (1) is provided with an axial groove (14) which is fitted with a positioning rib in the sewer elbow.

6. A sewer backflow prevention device according to claim 1, wherein the shake cover (2) is made of a material having a density not less than that of water.

7. A sewer backflow prevention device according to claim 1, wherein the surface on which the water inlet/outlet port (111) is located is arranged in a vertical direction.

8. A sewer backflow device according to any one of claims 2 to 4, characterised in that the device further comprises a torsion spring (3) mounted on said mounting shaft (22).

9. A sewer backflow prevention device according to claim 8, characterised in that the torsion springs (3) are provided in number as one mounted on the one-side mounting shaft (22) or two mounted on the two-side mounting shafts (22), respectively.

10. A sewer backflow prevention device according to claim 8, characterized in that a boss (13) is provided on the inner side wall of the inner pipe (1) above the tubular structure (11), one rotation arm of the torsion spring (3) is placed on the body (21) of the rocking cover (2), and the other rotation arm is placed on the boss (13).