Anti-backflow device for pipeline type sewage system

Abstract

The utility model provides a pipeline type sewage system anti-backflow device which comprises a shell, an automatic valve assembly and a manual valve assembly, and a through cavity communicated with a pipeline is formed in the shell. The automatic valve assembly comprises an automatic driving part and a first valve movably arranged in the through cavity, and the first valve is driven by the driving part to control the on-off of the through cavity; the manual valve assembly comprises a manual driving part and a second valve movably arranged in the through cavity, and the second valve is driven by the manual driving part to control the on-off of the through cavity; during use, if the second valve is not completely closed due to impurity accumulation at the second valve, sewage enters the first valve through a gap at the second valve and reaches the set height of the detection piece, the detection piece is electrically connected with the automatic driving piece, and the detection piece is electrically connected with the automatic driving piece and is used for detecting the liquid level height of the through cavity. The detection piece sends out a signal to enable the automatic driving piece to drive the first valve to close to prevent the sewage from further flowing backwards.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage equipment, in particular to a pipeline type sewage system backflow prevention device. Background Art

[0002] In the building drainage system, each household's water-using devices such as sinks and toilets are connected to the sewer branch, which is then connected to the building's sewer main. When the main is blocked, the sewage discharged by the upper residents will flow back through the branch pipes into the lower residents, causing pollution in the lower residents' homes and damage to furniture.

[0003] Chinese patent CN210372154U discloses an urban rainwater and sewage diversion backflow prevention device, which includes a check box, with interconnected pipes at both ends of the check box, and a check valve is provided in the pipe located on one side of the check box.

[0004] However, the anti-backflow device has only one check valve, and the slag in the water may get stuck on the valve cover from time to time, causing the valve cover not to be completely closed, thereby failing to prevent water from backflowing. Utility Model Content

[0005] Therefore, the technical problem to be solved by the utility model is that the anti-backflow device in the prior art has only one check valve, and the slag in the sewage will get stuck on the valve cover from time to time, causing the valve cover to not be completely closed, thereby failing to prevent water backflow.

[0006] To this end, the utility model provides a pipeline sewage system backflow prevention device, comprising:

[0007] The shell has a through cavity inside which is connected to the pipeline;

[0008] An automatic valve assembly, comprising an automatic driving member and a first valve movably disposed in a through cavity, wherein the first valve is driven by the automatic driving member to control the opening and closing of the through cavity;

[0009] A manual valve assembly, comprising a manual driving member and a second valve movably disposed in the through cavity, wherein the second valve is driven by the manual driving member to control the opening and closing of the through cavity;

[0010] Wherein, the first valve and the second valve are configured to control the opening and closing of the through cavity simultaneously or individually.

[0011] Optionally, a detection component is further included, which is electrically connected to the automatic driving component. The detection component is arranged in the through cavity to detect the height of the liquid level in the through cavity, and transmits a signal to the automatic driving component to close the first valve when a set height is reached.

[0012] Optionally, displacement sensors are provided at both the first valve and the second valve to detect the sealing degree of the first valve and the second valve when closed.

[0013] Optionally, it further comprises a first transmission member, one end of which is connected to the driving end of the automatic driving member, and the other end of which is hinged to the first valve;

[0014] The first transmission member is configured to be driven by the automatic driving member to promote the movement of the first valve.

[0015] Optionally, the automatic drive member is a hydraulic drive device.

[0016] Optionally, the manual drive member comprises a hand-held portion, a connecting portion and a hinged portion arranged therebetween, the hinged portion is hinged to the housing, and the connecting portion is movably connected to the second valve;

[0017] Wherein, the hand-held part is configured to rotate relative to the housing through the hinge part under the action of an external force, so as to drive the connecting part to drive the second valve to move.

[0018] Optionally, the manual drive member is arc-shaped as a whole.

[0019] Optionally, a sliding groove is provided on the second valve, and the end of the connecting portion is slidably disposed in the sliding groove.

[0020] Optionally, a mounting portion is provided on the shell, the automatic driving component is connected to the manual driving component, and the mounting portion is provided with a through hole communicating with the through cavity.

[0021] The utility model provides a pipeline sewage system backflow prevention device, which has the following advantages:

[0022] 1. The utility model provides a pipeline sewage system backflow prevention device, including a shell, an automatic valve assembly and a manual valve assembly, wherein a through cavity communicating with a pipeline is provided inside the shell; the automatic valve assembly includes an automatic driving member and a first valve movably arranged in the through cavity, wherein the first valve is driven by the driving member to control the on-off of the through cavity; the manual valve assembly includes a manual driving member and a second valve movably arranged in the through cavity, wherein the second valve is driven by the manual driving member to control the on-off of the through cavity; wherein the first valve and the second valve are configured to control the on-off of the through cavity simultaneously or individually.

[0023] In the pipeline sewage system backflow prevention device of this structure, during use, weeds and other impurities will appear around the second valve. When the second valve is closed, the second valve cannot be completely closed due to the appearance of weeds and other impurities. Therefore, an automatic valve assembly is arranged behind the second valve. If the second valve is not completely closed due to the accumulation of impurities at the second valve, the sewage enters the first valve through the gap at the second valve and reaches the set height of the detection component, the automatic driving component drives the first valve to close to prevent further backflow of sewage.

[0024] 2. The utility model provides a pipeline sewage system backflow prevention device, which also includes a detection component electrically connected to the automatic drive component. The detection component is arranged in the through cavity to detect the liquid level height of the through cavity, and when the set height is reached, a signal is transmitted to the automatic drive component to close the first valve.

[0025] In the pipeline sewage system backflow prevention device of this structure, a detection component, such as a liquid level sensor, is arranged in the through cavity, and the detection component is electrically connected to the automatic driving component. The detection component is used to detect the liquid level height of the through cavity, and transmits a signal to the automatic driving component to close the first valve when the set height is reached. The automatic driving component may be integrated with a circuit board in the prior art to realize signal processing of the detection component and control of the automatic driving component. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic structural view of a second valve in a closed state in a pipeline type sewage system backflow prevention device provided in an embodiment of the utility model;

[0028] Figure 2 This is a schematic structural view of a pipeline sewage system backflow prevention device provided in an embodiment of the utility model, in which a first valve and a second valve are both in an open state;

[0029] Figure 3 It is a schematic structural view of a first valve in a pipeline sewage system backflow prevention device provided in an embodiment of the utility model in a closing process;

[0030] Figure 4 It is a schematic structural view of the second valve in the pipeline sewage system backflow prevention device provided in the embodiment of the utility model in the closing process.

[0031] Description of reference numerals:

[0032] 1- housing;

[0033] 2-automatic valve assembly; 21-automatic driving member; 22-first valve; 23-first transmission member;

[0034] 3-manual valve assembly; 31-manual drive member; 32-second valve. DETAILED DESCRIPTION

[0035] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0036] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0037] Example

[0038] This embodiment provides a pipeline sewage system backflow prevention device, such as Figures 1 to 4 As shown, it includes a housing 1, an automatic valve assembly 2 and a manual valve assembly 3. A through cavity communicating with a pipeline is provided inside the housing 1, and the automatic valve assembly 2 and the manual valve assembly 3 are both arranged inside the through cavity inside the housing 1.

[0039] In this embodiment, the manual valve assembly 3 includes a manual driving member 31 and a second valve 32 movably disposed in the through cavity. The second valve 32 is driven by the manual driving member 31 to control the opening and closing of the through cavity.

[0040] like Figures 1 to 4 As shown, a placement cavity is also provided inside the housing 1, the placement cavity is located at the upper part of the through cavity, a mounting portion for mounting a manual drive member 31 is provided at the bottom of the placement cavity, and the second valve 32 is hinged to the side wall of the through cavity of the housing 1. Figure 1As shown, during use, the second valve 32 is in Figure 1 The closed position shown is used to seal the through cavity to prevent sewage backflow.

[0041] like Figures 2 to 4 As shown, the manual drive member 31 is hinged to the mounting portion, and its lower end passes through the through hole on the upper side of the through cavity and is movably connected to the side wall of the second valve 32. Therefore, the second valve 32 can be controlled to open by pushing the upper end of the manual drive member 31 for cleaning and maintenance.

[0042] In this embodiment, the manual drive member 31 is arc-shaped as a whole. Figures 1 to 4 As shown, the manual driving member 31 includes a hand-held portion, a connecting portion and a hinged portion arranged therebetween, the hinged portion is hinged to the mounting portion, and the connecting portion is movably connected to the second valve 32; furthermore, the hand-held portion can rotate relative to the housing 1 through the hinged portion under the action of an external force, so as to drive the connecting portion to drive the second valve 32 to move.

[0043] In this embodiment, a sliding groove is provided on the second valve 32, and the end of the connecting portion is slidably disposed in the sliding groove. Figure 1 As shown, a handle structure is provided on the side of the second valve 32, and its interior is hollow to form the above-mentioned sliding groove. The end of the connecting part is also provided with a groove to place the groove wall of the above-mentioned sliding groove, so that the end of the connecting part can slide relative to the second valve 32, and the manual driving member 31 can control the second valve 32.

[0044] During use, weeds and other impurities may appear around the second valve 32 . When the second valve 32 is closed, the second valve 32 cannot be completely closed due to the weeds and other impurities. Therefore, an automatic valve assembly 2 is provided behind the second valve 32 .

[0045] In this embodiment, the automatic valve assembly 2 includes an automatic driving member 21, a first valve 22 and a first transmission member 23 connected therebetween.

[0046] like Figures 1 to 4 As shown, the automatic driving member 21 is also arranged on the mounting portion at the bottom of the placement cavity, the first valve 22 is hinged to the side wall of the through cavity of the housing 1, one end of the first transmission member 23 is connected to the driving end of the automatic driving member 21, and the other end of the first transmission member 23 passes through the through hole on the upper side of the through cavity and is hinged to the first valve 22. Figure 2 and Figure 3 As shown, the automatic driving member 21 drives the first transmission member 23 to move downward to push the first valve 22, thereby pushing the first valve 22 to close, and vice versa, pulling the first valve 22 to open. The automatic driving member 21 adopts a hydraulic driving device in the prior art.

[0047] In this embodiment, a detection member, such as a liquid level sensor, is provided in the through cavity. The detection member is electrically connected to the automatic drive member 21. The detection member is used to detect the liquid level height of the through cavity, and transmits a signal to the automatic drive member 21 to close the first valve 22 when the set height is reached. Among them, a circuit board in the prior art can be integrated in the automatic drive member 21 to realize signal processing of the detection member and control the automatic drive member 21. Displacement sensors are provided at both the first valve 22 and the second valve 32. The double verification method is used to detect the sealing degree of the first valve 22 and the second valve 32. That is, after the two displacement sensors at the first valve 22 and the second valve 32 detect that the first valve 22 and the second valve 32 are both in the sealed closed position, it can be determined that the first valve 22 and the second valve 32 are both closed normally.

[0048] During use, if the second valve 32 is not completely closed due to accumulation of impurities at the second valve 32, sewage enters the first valve 22 through the gap at the second valve 32 and reaches the set height of the detection component, the detection component sends a signal to enable the automatic drive component 21 to drive the first valve 22 to close, thereby preventing further backflow of sewage.

[0049] Among them, since a through hole is provided on the upper side of the through cavity of the shell 1, so that the automatic driving component 21 and the manual driving component 31 can respectively pass through the through hole to control the first valve 22 and the second valve 32, in order to prevent the sewage liquid level from entering the placement cavity of the shell 1 through the above-mentioned through hole when it is too high, causing damage to the automatic valve assembly 2 and the manual valve assembly 3, in this embodiment, the automatic valve assembly 2 and the manual valve assembly 3 are both waterproof and sealed.

[0050] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. A pipeline sewage system backflow prevention device, characterized in that: include: A housing (1) is provided with a through cavity for communicating with a pipeline; An automatic valve assembly (2) comprises an automatic driving member (21) and a first valve (22) movably arranged in a through cavity, wherein the first valve (22) is driven by the automatic driving member (21) to control the opening and closing of the through cavity; A manual valve assembly (3), comprising a manual drive member (31) and a second valve (32) movably arranged in the through cavity, wherein the second valve (32) is driven by the manual drive member (31) to control the opening and closing of the through cavity; The first valve (22) and the second valve (32) are configured to control the opening and closing of the through cavity simultaneously or individually.

2. The pipeline sewage system backflow prevention device according to claim 1, characterized in that: It also includes a detection component electrically connected to the automatic drive component (21), the detection component is arranged in the through cavity to detect the liquid level in the through cavity, and transmits a signal to the automatic drive component (21) to close the first valve (22) when the liquid level reaches a set height.

3. The pipeline sewage system backflow prevention device according to claim 2, characterized in that: Displacement sensors are provided at both the first valve (22) and the second valve (32) to detect the degree of sealing when the first valve (22) and the second valve (32) are closed.

4. The pipeline sewage system backflow prevention device according to claim 2, characterized in that: The automatic valve assembly (2) further comprises a first transmission member (23), one end of the first transmission member (23) being connected to the driving end of the automatic driving member (21), and the other end of the first transmission member (23) being hinged to the first valve (22); The first transmission member (23) is configured to be driven by the automatic driving member (21) to push the first valve (22) to move.

5. The pipeline sewage system backflow prevention device according to claim 4, characterized in that: The automatic driving component (21) is a hydraulic driving device.

6. The pipeline sewage system backflow prevention device according to any one of claims 1 to 5, characterized in that: The manual drive member (31) comprises a hand-held portion, a connecting portion and a hinged portion arranged therebetween, the hinged portion being hingedly connected to the housing (1), and the connecting portion being movably connected to the second valve (32); Wherein, the hand-held portion is configured to rotate relative to the housing (1) via the hinged portion under the action of an external force, so as to drive the connecting portion to drive the second valve (32) to move.

7. The pipeline sewage system backflow prevention device according to claim 6, characterized in that: The manual drive member (31) is arc-shaped as a whole.

8. The pipeline sewage system backflow prevention device according to claim 6, characterized in that: The second valve (32) is provided with a sliding groove, and the end of the connecting portion is slidably arranged in the sliding groove.

9. The pipeline sewage system backflow prevention device according to claim 1, characterized in that: The housing (1) is provided with a mounting portion, the automatic driving component (21) is connected to the manual driving component (31), and the mounting portion is provided with a through hole communicating with the through cavity.

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