Backflow prevention structure of sewage collection device

Abstract

The utility model relates to an anti-backflow structure of a sewage collecting device, which belongs to the technical field of sewage treatment and comprises an anti-backflow pipe, an anti-backflow mechanism is arranged in the anti-backflow pipe and comprises a fixing rod, a conical anti-backflow cylinder and a rubber ring, the fixing rod is fixedly mounted in the anti-backflow pipe, and a sleeve is fixedly mounted at one end of the fixing rod. According to the anti-backflow structure of the sewage collection device, the conical anti-backflow barrel, the rubber ring and the string rod are arranged in the anti-backflow pipe, and the floating ball, the first anti-backflow rubber bowl and the second anti-backflow rubber bowl are arranged on the string rod, so that the string rod can be driven to move in the anti-backflow pipe through buoyancy of water acting on the floating ball when the anti-backflow structure is used; the first anti-reflux rubber bowl can block the conical anti-reflux barrel, the second anti-reflux rubber bowl makes contact with the rubber ring to block the bottom of the anti-reflux pipe, and the anti-reflux effect of the sewage collecting device can be improved through the double-blocking anti-reflux structure.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, and particularly relates to an anti-backflow structure of a sewage collection device. Background Technique

[0002] A sewage collection device is equipment and a system used for collecting, storing, and treating sewage, which is widely used in industrial, agricultural, and urban sewage management. The anti-backflow structure is to prevent sewage from flowing back in pipelines or equipment due to pressure changes or other reasons, ensuring the normal operation of the sewage system and environmental safety.

[0003] Patent Publication No. CN212387744U discloses an anti-backflow device for sewage treatment, which particularly relates to the technical field of sewage treatment. The utility model includes an anti-backflow pipe, an inlet and an outlet are respectively arranged at the upper and lower ends of the anti-backflow pipe, and the cross-sectional area of the outlet is larger than that of the inlet; a baffle is arranged on the inner side wall of the anti-backflow pipe, and the edge of the baffle is slidably connected to the inner side wall at the upper end of the anti-backflow pipe; springs are arranged at both ends of the baffle, and both ends of the springs are respectively connected to the inner side wall at the upper end of the anti-backflow pipe and the baffle; a folding plate is arranged on the inner side wall at the upper end of the anti-backflow pipe, the length of the folding plate is equal to the distance between the two inner side walls at the upper end of the anti-backflow pipe, the upper end of the folding plate is hinged to the anti-backflow pipe, and one side of the folding plate is slidably connected to the end of the baffle; a push plate is arranged at the upper end of the folding plate. The anti-backflow device for sewage treatment proposed by the utility model can prevent the backflow of clear water and improve the sewage treatment efficiency.

[0004] The above patent improves the disadvantages that when the water level of clear water in the existing sewage treatment device is too high, congestion will occur and backflow will appear, resulting in secondary pollution of clear water, and proposes an anti-backflow device for sewage treatment to solve the above problems. A spring is arranged between the anti-backflow pipe and the baffle in this patent, and the spring can play a role in stretching the baffle. However, the spring is arranged inside the anti-backflow pipe, and the internal environment of the anti-backflow pipe is humid, so the spring is very easy to rust, resulting in the spring being unable to work normally, making the baffle unable to move well and affecting the anti-backflow effect. Content of the Utility Model

[0005] In view of the deficiencies of the prior art, the utility model provides an anti-backflow structure of a sewage collection device, which has the advantage of good anti-backflow effect, and solves the problem that in the existing anti-backflow structure, the spring is arranged inside the anti-backflow pipe, and the internal environment of the anti-backflow pipe is humid, so the spring is very easy to rust, resulting in the spring being unable to work normally, making the baffle unable to move well and affecting the anti-backflow effect.

[0006] To achieve the above object, the utility model provides the following technical solution: An anti-backflow structure of a sewage collection device, including an anti-backflow pipe, and an anti-backflow mechanism is arranged inside the anti-backflow pipe;

[0007] The anti-backflow mechanism includes a fixed rod, a conical anti-backflow cylinder and a rubber ring fixedly installed inside the anti-backflow pipe. One end of the fixed rod is fixedly installed with a sleeve, and a string rod penetrating the sleeve is slidably installed inside the sleeve. A floating ball, a first anti-backflow rubber bowl and a second anti-backflow rubber bowl are fixedly installed on the surface of the string rod.

[0008] Further, the number of the fixed rods is three, and the three fixed rods are evenly distributed on the surface of the sleeve.

[0009] The beneficial effect of adopting the above further scheme is that: through multiple fixed rods, it is beneficial to improve the connection stability between the sleeve and the anti-backflow pipe.

[0010] Further, two retaining rings are fixedly installed on the surface of the string rod. The sleeve is located between the two retaining rings. An expansion rubber protective sleeve is fixedly installed on the surface of the retaining ring, and one end of the expansion rubber protective sleeve away from the retaining ring is fixedly connected to the end surface of the sleeve.

[0011] The beneficial effect of adopting the above further scheme is that: the connection between the sleeve and the string rod can be protected through the expansion rubber protective sleeve, and it can prevent water or sundries from entering the connection between the sleeve and the string rod, causing jamming or rust between the sleeve and the string rod.

[0012] Further, the top opening diameter of the conical anti-backflow cylinder is larger than the bottom opening diameter of the conical anti-backflow cylinder, and the maximum diameter of the first anti-backflow rubber bowl is larger than the bottom opening diameter of the conical anti-backflow cylinder.

[0013] The beneficial effect of adopting the above further scheme is that: it is convenient for the first anti-backflow rubber bowl to block the conical anti-backflow cylinder, and it can prevent sewage from entering the conical anti-backflow cylinder.

[0014] Further, the maximum diameter of the second anti-backflow rubber bowl is larger than the inner diameter of the rubber ring.

[0015] The beneficial effect of adopting the above further scheme is that: it is convenient for the second anti-backflow rubber bowl to contact the inner surface of the rubber ring.

[0016] Further, a limiting ring is fixedly installed inside the anti-backflow pipe below the rubber ring. A limiting rod is fixedly installed on the surface of the string rod. Both ends of the limiting rod are in contact with the inner surface of the anti-backflow pipe, and the length of the limiting rod is larger than the inner diameter of the limiting ring.

[0017] The beneficial effect of adopting the above further scheme is that: by setting the limiting ring and the limiting rod, it is convenient to limit the rising height of the string rod, which is beneficial to preventing the second anti-backflow rubber bowl from being excessively stuck into the rubber ring and preventing the first anti-backflow rubber bowl from being excessively stuck into the conical anti-backflow cylinder.

[0018] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0019] 1. For the anti-backflow structure of the sewage collection device, a conical anti-backflow cylinder, a rubber ring and a string rod are provided in the anti-backflow pipe. A floating ball, a first anti-backflow rubber bowl and a second anti-backflow rubber bowl are provided on the string rod. When in use, the buoyancy of water acting on the floating ball can drive the string rod to move in the anti-backflow pipe, so that the first anti-backflow rubber bowl seals the conical anti-backflow cylinder, and the second anti-backflow rubber bowl contacts the rubber ring to seal the bottom of the anti-backflow pipe. The anti-backflow effect of the sewage collection device can be improved through the double-sealing anti-backflow structure.

[0020] 2. For the anti-backflow structure of the sewage collection device, a telescopic rubber protective sleeve is provided between the string rod and the sleeve, which can protect the connection between the sleeve and the string rod, prevent water or debris from entering the connection between the sleeve and the string rod, causing jamming or corrosion between the sleeve and the string rod, and is beneficial to ensuring that the string rod can slide smoothly on the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic internal structure diagram of the anti-backflow pipe of the present utility model;

[0022] Figure 2 It is a schematic surface structure diagram of the string rod of the present utility model;

[0023] Figure 3 It is a schematic structure diagram of the second anti-backflow rubber bowl of the present utility model;

[0024] Figure 4 It is a schematic structure diagram of the first anti-backflow rubber bowl of the present utility model;

[0025] Figure 5 It is a schematic surface structure diagram of the sleeve of the present utility model.

[0026] In the figure: 1. Anti-backflow pipe; 2. Fixed rod; 3. Conical anti-backflow cylinder; 4. Rubber ring; 5. Sleeve; 6. String rod; 7. Floating ball; 8. First anti-backflow rubber bowl; 9. Second anti-backflow rubber bowl; 10. Retaining ring; 11. Telescopic rubber protective sleeve; 12. Limiting ring; 13. Limiting rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative work shall fall within the protection scope of the present utility model.

[0028] Please refer toFigures 1 to 5 , an anti-backflow structure of a sewage collection device in this embodiment includes an anti-backflow pipe 1. An anti-backflow mechanism is provided inside the anti-backflow pipe 1. The anti-backflow mechanism includes a fixed rod 2 fixedly installed inside the anti-backflow pipe 1, a conical anti-backflow cylinder 3, and a rubber ring 4. One end of the fixed rod 2 is fixedly installed with a sleeve 5. The number of fixed rods 2 is three, and the three fixed rods 2 are evenly distributed on the surface of the sleeve 5. Through multiple fixed rods 2, it is beneficial to improve the connection stability between the sleeve 5 and the anti-backflow pipe 1. A string rod 6 penetrating the sleeve 5 is slidably installed inside the sleeve 5. A floating ball 7, a first anti-backflow rubber bowl 8, and a second anti-backflow rubber bowl 9 are fixedly installed on the surface of the string rod 6. The top opening diameter of the conical anti-backflow cylinder 3 is larger than the bottom opening diameter of the conical anti-backflow cylinder 3. The maximum diameter of the first anti-backflow rubber bowl 8 is larger than the bottom opening diameter of the conical anti-backflow cylinder 3, which is convenient for the first anti-backflow rubber bowl 8 to block the conical anti-backflow cylinder 3 and prevent sewage from entering the conical anti-backflow cylinder 3. The maximum diameter of the second anti-backflow rubber bowl 9 is larger than the inner diameter of the rubber ring 4, which is convenient for the second anti-backflow rubber bowl 9 to contact the inner surface of the rubber ring 4.

[0029] Two retaining rings 10 are fixedly installed on the surface of the string rod 6. The sleeve 5 is located between the two retaining rings 10. A telescopic rubber protective sleeve 11 is fixedly installed on the surface of the retaining ring 10. One end of the telescopic rubber protective sleeve 11 away from the retaining ring 10 is fixedly connected to the end surface of the sleeve 5. Through the telescopic rubber protective sleeve 11, the connection between the sleeve 5 and the string rod 6 can be protected, and water or debris can be prevented from entering the connection between the sleeve 5 and the string rod 6, causing the sleeve 5 and the string rod 6 to be stuck or corroded.

[0030] A limiting ring 12 located below the rubber ring 4 is fixedly installed inside the anti-backflow pipe 1. A limiting rod 13 is fixedly installed on the surface of the string rod 6. Both ends of the limiting rod 13 are in contact with the inner surface of the anti-backflow pipe 1. The length of the limiting rod 13 is greater than the inner diameter of the limiting ring 12. By setting the limiting ring 13 and the limiting rod 12, it is convenient to limit the rising height of the string rod 6, which is beneficial to prevent the second anti-backflow rubber bowl 9 from being excessively stuck into the rubber ring 4 and prevent the first anti-backflow rubber bowl 8 from being excessively stuck into the conical anti-backflow cylinder 3.

[0031] It should be noted that the diameter of the string rod 6 in this embodiment is adapted to the inner diameter of the sleeve 5, and the outer surface of the string rod 6 is in sliding contact with the inner surface of the sleeve 5, which is beneficial for the string rod 6 to slide on the sleeve 5.

[0032] It should be noted that the conical anti-backflow cylinder 3, the first anti-backflow rubber bowl 8, and the second anti-backflow rubber bowl 9 in this embodiment are all made of rubber materials.

[0033] In this embodiment, the first anti-reflux rubber bowl 8 and the second anti-reflux rubber bowl 9 are both bowl-shaped, and the arc-shaped outer surfaces of the first anti-reflux rubber bowl 8 and the second anti-reflux rubber bowl 9 face the conical anti-reflux cylinder 3 and the rubber ring 4 respectively.

[0034] The working principle of the above embodiment is as follows:

[0035] During use, when sewage flows back into the anti-backflow pipe 1, the water flow will drive the floating ball 7 to float. The floating ball 7 drives the string rod 6 to move, and the telescopic rubber protective sleeve 11 expands and contracts following the movement of the string rod 6. Consequently, the first anti-reflux rubber bowl 8 and the second anti-reflux rubber bowl 9 move synchronously with the string rod 6, causing the first anti-reflux rubber bowl 8 and the second anti-reflux rubber bowl 9 to move towards the conical anti-reflux cylinder 3 and the rubber ring 4. As a result, the first anti-reflux rubber bowl 8 contacts the smaller-diameter end of the opening of the conical anti-reflux cylinder 3, and the second anti-reflux rubber bowl 9 contacts the rubber ring 4. Meanwhile, the limit rod 13 contacts the limit ring 12, thereby limiting the string rod 6 and preventing it from moving further. The conical anti-reflux cylinder 3 can be blocked by the first anti-reflux rubber bowl 8, and the bottom of the anti-backflow pipe 1 can be blocked by the contact between the second anti-reflux rubber bowl 9 and the rubber ring 4, thus preventing sewage from flowing back into the anti-backflow pipe 1.

[0036] It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the said element.

[0037] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-backflow structure of a sewage collection device, including an anti-backflow pipe (1), characterized in that: A backflow prevention mechanism is provided inside the backflow prevention pipe (1); The backflow prevention mechanism includes a fixed rod (2), a conical backflow prevention cylinder (3) and a rubber ring (4) fixedly installed inside the backflow prevention pipe (1). One end of the fixed rod (2) is fixedly installed with a sleeve (5). A string rod (6) penetrating through the sleeve (5) is slidably installed inside the sleeve (5). A floating ball (7), a first backflow prevention rubber bowl (8) and a second backflow prevention rubber bowl (9) are fixedly installed on the surface of the string rod (6).

2. The anti-backflow structure of a sewage collection device according to claim 1, characterized in that: The number of the fixed rods (2) is three, and the three fixed rods (2) are evenly distributed on the surface of the sleeve (5).

3. The anti-backflow structure of a sewage collection device according to claim 1, characterized in that: Two retaining rings (10) are fixedly installed on the surface of the string rod (6). The sleeve (5) is located between the two retaining rings (10). An expansion rubber protective sleeve (11) is fixedly installed on the surface of the retaining ring (10). One end of the expansion rubber protective sleeve (11) away from the retaining ring (10) is fixedly connected to the end surface of the sleeve (5).

4. The anti-backflow structure of a sewage collection device according to claim 1, characterized in that: The top opening diameter of the conical backflow prevention cylinder (3) is larger than the bottom opening diameter of the conical backflow prevention cylinder (3). The maximum diameter of the first backflow prevention rubber bowl (8) is larger than the bottom opening diameter of the conical backflow prevention cylinder (3).

5. The anti-backflow structure of a sewage collection device according to claim 1, characterized in that: The maximum diameter of the second backflow prevention rubber bowl (9) is larger than the inner diameter of the rubber ring (4).

6. The anti-backflow structure of a sewage collection device according to claim 1, characterized in that: A limiting ring (12) is fixedly installed inside the backflow prevention pipe (1) and is located below the rubber ring (4). A limiting rod (13) is fixedly installed on the surface of the string rod (6). Both ends of the limiting rod (13) are in contact with the inner surface of the backflow prevention pipe (1). The length of the limiting rod (13) is larger than the inner diameter of the limiting ring (12).

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