Anti-reflux device for industrial drainage pipeline

Abstract

The utility model relates to an industrial drainage pipeline anti-backflow device in the technical field of anti-backflow. The industrial drainage pipeline anti-backflow device comprises an industrial drainage pipe, a water level flow dividing pipe and a floating lever assembly. The floating lever assembly comprises a floating ball, a hinge rod, a linkage shaft, a lever sleeve strip, a hinge shaft, a linkage block, a linkage valve strip, a rotating shaft and a valve element body. The floating lever assembly is adopted, the linkage block enables the linkage valve strip to rotate clockwise, the sealing ring can achieve closing, plugging and anti-backflow treatment on the inner wall of the industrial drainage pipe, and the industrial drainage pipe anti-backflow device has the advantages of being different from an electric control anti-backflow device, more convenient to use and install, capable of being used for a long time in the condition and environment without depending on electric power and high in stability. Therefore, the problems that the device needs to be used through an electrifying means, is difficult to use for a long time in time in the pipeline blockage process without depending on the condition and environment of electric power, and is poor in use stability are solved.

Description

Technical Field

[0001] This utility model relates to the field of backflow prevention technology, and in particular to a backflow prevention device for industrial drainage pipes. Background Technology

[0002] The main function of backflow prevention devices in industrial drainage pipelines is to prevent sewage or harmful media from flowing back into the pipelines, thereby avoiding harm to the production environment, equipment, and personnel safety. However, in industrial production, drainage pipelines may become blocked due to impurities, causing drainage to continue to overflow.

[0003] In existing published literature, patent publication number CN105179762A discloses an anti-backflow device. This technology utilizes an outlet sealing element installed within the water inlet chamber of the housing. The anti-backflow device provided by this invention employs a purely mechanical structure to control the water pressure conversion within the control valve assembly, thereby opening or closing the water inlet. It can quickly switch between water supply and replenishment modes, effectively preventing backflow while maintaining normal equipment operation. However, this patent has the following drawbacks.

[0004] When industrial drainage pipes are used for drainage, blockages can cause water to flow backwards. This requires electricity to operate, which makes it difficult to use in situations where the pipes are blocked and to operate for extended periods without electricity, resulting in poor operational stability. Utility Model Content

[0005] To overcome the aforementioned deficiencies of the prior art, this utility model provides the following technical solution: an anti-backflow device for industrial drainage pipes, comprising an industrial drainage pipe and a water level diversion pipe, wherein the water level diversion pipe is fixedly connected to the outer wall of the industrial drainage pipe, and a floating lever assembly is provided inside the water level diversion pipe; the floating lever assembly includes a float slidably disposed inside the water level diversion pipe, a hinge rod is fixedly connected to the top of the outer wall of the float, a linkage shaft is fixedly connected to one side of the inner wall of the hinge rod, and a lever sleeve is rotatably connected to the outer wall of the linkage shaft, and a hinge shaft is rotatably connected to the inner wall of the lever sleeve at a position away from the linkage shaft; a linkage block is fixedly installed at one end of the hinge shaft, and a linkage valve strip is fixedly connected to the outer wall of the linkage block, a rotating shaft is fixedly installed on the side of the linkage valve strip, and a valve core is fixedly connected to one end of the rotating shaft.

[0006] Preferably, the float is slidably connected to the water level diversion pipe, and the outer wall of the float is smooth. The lever sleeve is hinged to the hinge rod, and the center point of the linkage shaft is lower than the center point of the hinge shaft; the rotating shaft is rotatably connected to the industrial drain pipe, and the valve core is rotatably connected to the industrial drain pipe. A sealing sleeve is rotatably connected to the outer wall of the rotating shaft, and a sealing ring is fixedly connected to one end of the sealing sleeve, the sealing ring being rotatably connected to the rotating shaft; the sealing sleeve is fixedly connected to the industrial drain pipe.

[0007] When this technology is in use, the industrial drain pipe is filled into the water level diversion pipe. The float moves the hinge rod upward, the linkage shaft moves the bottom end of the lever sleeve upward, the hinge shaft drives the two limit rings to rotate clockwise, the linkage block makes the linkage valve strip rotate clockwise, and the rotating shaft rotates stably clockwise inside the sealing sleeve and sealing ring. The sealing ring can close and block the inner wall of the industrial drain pipe to prevent backflow.

[0008] Preferably, the upper surface of the linkage valve strip is provided with a counterweight balancing assembly; the counterweight balancing assembly includes a support block fixedly disposed on the upper surface of the linkage valve strip, and a counterweight column fixedly installed on the upper surface of the support block; the counterweight balancing assembly also includes a linkage plate, a spring, a base plate, a linkage bar, and a reinforcing block; the linkage plate is fixed to the lower surface of the linkage valve strip, and the spring is fixedly located at the bottom end of the linkage plate, the base plate is fixedly located at the bottom end of the spring, the linkage bar is fixedly installed on the lower surface of the base plate, and the reinforcing block is fixedly located at one end of the linkage bar, and the reinforcing block is fixedly connected to the industrial drainage pipe. The counterweight column is made of lead material, and the cross-sectional shape of the counterweight column is circular. The linkage plate and the base plate are symmetrically arranged about the spring, and the cross-sectional shape of the linkage plate and the base plate is circular.

[0009] When this technology is in use, the counterweight column, counterweight support block, and linkage valve strip counterweight are pressed against the linkage plate, the spring is pressed against the base plate, the base plate counterweight is on the linkage bar, the reinforcing block supports the linkage bar, and the linkage bar provides support force to the base plate.

[0010] Preferably, the inner wall of the float is provided with a guide assembly; the guide assembly includes a support column, a support ring, a guide rod, and a limiting block; the support column is slidably located on the inner wall of the float, and the support column is fixedly connected to the water level diversion pipe; the support ring is fixedly located on the outer wall of the support column and is used to support the float; the top end of the support column is fixedly connected to the guide rod, and the float is slidably connected to the guide rod; the limiting block is fixedly located at the top end of the guide rod and is used to limit the float. Limiting rings are slidably connected to both sides of the lever sleeve, and both limiting rings are fixedly connected to the hinge shaft. A sealing ring is fixedly connected to the outer wall of the valve core, and the sealing ring is rotatably connected to the industrial drain pipe; the bottom end of the industrial drain pipe is fixedly connected to a downpipe.

[0011] When this technology is in use, the float rises and slides along the outer wall of the guide rod. The support rod supports the support ring, and the support ring supports the bottom of the float. When the limiting block limits the float, the float can be limited and blocked at the position of the water level diversion pipe.

[0012] The technical effects and advantages of this utility model are as follows:

[0013] This invention employs a floating lever assembly. Industrial water flows upward through the lower drain pipe into the industrial drainage pipe, and then into the water level distribution pipe. The float moves the hinge rod upward, which in turn moves the linkage shaft upward. The top of the lever sleeve rotates the hinge shaft clockwise, causing the linkage block to rotate the linkage valve bar clockwise. The rotating shaft rotates clockwise, and the valve core rotates the sealing ring clockwise. Thus, the sealing ring can close and seal the inner wall of the industrial drainage pipe, preventing backflow. Unlike electrically controlled backflow prevention devices, this invention is more convenient to use and install, can be used for a long time in environments and conditions that do not rely on electricity, and has high stability.

[0014] This utility model uses a counterweight column and a counterweight support block, with the support block counterweighting the linkage valve strip. The linkage plate counterweight is pressed against the top of the spring, and the spring is pressed against the base plate. The reinforcing block supports the linkage strip, and the linkage valve strip can remain horizontal, so it can be opened through the valve core body on the rotating shaft. Therefore, it can remain open when not blocked.

[0015] 3. In this utility model, a float slides up the outer wall of a guide rod, a support rod supports a support ring, and the support ring supports the bottom of the float. The float then begins to slide up the outer wall of the guide rod, thereby limiting and sealing the position of the water level diversion pipe. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the anti-backflow device for industrial drainage pipelines according to this utility model.

[0017] Figure 2 This is a partial structural diagram of the vertical cross-section of the water level diversion pipe of this utility model.

[0018] Figure 3 This is a partial structural diagram of the connection between the lever sleeve and the linkage shaft of this utility model.

[0019] Figure 4 This is a partial structural diagram of the connection between the industrial drainage pipe and the reinforcing block of this utility model.

[0020] Figure 5 This is a top view of the anti-backflow device for industrial drainage pipes according to this utility model.

[0021] Figure 6This is a partial structural diagram of the vertical cross-section of the connection between the hinge rod and the float of this utility model.

[0022] The attached diagram is labeled as follows: 1. Industrial drainage pipe; 2. Water level diversion pipe; 3. Float ball; 4. Hinge rod; 5. Linkage shaft; 6. Lever sleeve; 7. Hinge shaft; 8. Linkage block; 9. Linkage valve strip; 10. Rotating shaft; 11. Valve core body; 12. Sealing sleeve; 13. Sealing shaft ring; 14. Support block; 15. Counterweight column; 16. Linkage plate; 17. Spring; 18. Base plate; 19. Linkage strip; 20. Reinforcing block; 21. Support column; 22. Support ring; 23. Guide rod; 24. Limiting block; 25. Limiting ring; 26. Sealing ring; 27. Lower drain pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] As attached Figure 1 - Appendix Figure 6 The present invention relates to an anti-backflow device for industrial drainage pipes, which is equipped with a floating lever assembly. The floating lever assembly is designed to prevent backflow, unlike electrically controlled anti-backflow devices. It is more convenient to use and install, can be used for a long time in conditions and environments that do not rely on electricity, and has high stability. The specific structural configuration of the floating lever assembly is as follows.

[0025] In this embodiment, as shown in the appendix Figure 1 - Appendix Figure 5 As shown, it includes an industrial drainage pipe 1 and a water level diversion pipe 2. The water level diversion pipe 2 is fixedly connected to the outer wall of the industrial drainage pipe 1. A floating lever assembly is provided inside the water level diversion pipe 2. The floating lever assembly includes a float 3 that is slidably disposed inside the water level diversion pipe 2. A hinge rod 4 is fixedly connected to the top of the outer wall of the float 3. A linkage shaft 5 is fixedly connected to one side of the inner wall of the hinge rod 4. A lever sleeve 6 is rotatably connected to the outer wall of the linkage shaft 5. A hinge shaft 7 is rotatably connected to the inner wall of the lever sleeve 6 at a position away from the linkage shaft 5.

[0026] A linkage block 8 is fixedly installed at one end of the hinge shaft 7, and a linkage valve strip 9 is fixedly connected to the outer wall of the linkage block 8. A rotating shaft 10 is fixedly installed on the side of the linkage valve strip 9, and a valve core 11 is fixedly connected to one end of the rotating shaft 10. The float 3 is slidably connected to the water level diversion pipe 2, and the outer wall of the float 3 is a smooth surface. The lever sleeve 6 is hinged to the hinge rod 4, and the center point of the linkage shaft 5 is lower than the center point of the hinge shaft 7; the rotating shaft 10 is rotatably connected to the industrial drainage pipe 1, and the valve core 11 is rotatably connected to the industrial drainage pipe 1.

[0027] In this embodiment, as shown in the appendix Figure 5 As shown, a sealing sleeve 12 is rotatably connected to the outer wall of the rotating shaft 10, and a sealing ring 13 is fixedly connected to one end of the sealing sleeve 12. The sealing ring 13 is rotatably connected to the rotating shaft 10. The sealing sleeve 12 is fixedly connected to the industrial drain pipe 1 so that the rotating shaft 10 can rotate on the inner wall of the sealing sleeve 12 and the sealing ring 13, so that the rotating shaft 10 can rotate in a sealed manner.

[0028] In this embodiment, as shown in the appendix Figure 4 As shown, the upper surface of the linkage valve strip 9 is provided with a counterweight balancing assembly; the counterweight balancing assembly includes a support block 14 fixedly installed on the upper surface of the linkage valve strip 9, and a counterweight column 15 fixedly installed on the upper surface of the support block 14; the counterweight balancing assembly also includes a linkage plate 16, a spring 17, a base plate 18, a linkage strip 19, and a reinforcing block 20.

[0029] The linkage plate 16 is fixed to the lower surface of the linkage valve strip 9, and the spring 17 is fixed at the bottom end of the linkage plate 16. The base plate 18 is fixed at the bottom end of the spring 17. The linkage bar 19 is fixedly installed on the lower surface of the base plate 18, and the reinforcing block 20 is fixed at one end of the linkage bar 19. The reinforcing block 20 is fixedly connected to the industrial drainage pipe 1. The counterweight column 15 is made of lead, and the cross-sectional shape of the counterweight column 15 is circular. The linkage plate 16 and the base plate 18 are symmetrically arranged about the spring 17, and the cross-sectional shape of both the linkage plate 16 and the base plate 18 is circular.

[0030] In this embodiment, as shown in the appendix Figure 1 - Appendix Figure 6As shown, the inner wall of the float 3 is provided with a guide assembly; the guide assembly includes a support column 21, a support ring 22, a guide rod 23, and a limiting block 24; the support column 21 is slidably located on the inner wall of the float 3, and the support column 21 is fixedly connected to the water level diversion pipe 2; the support ring 22 is fixedly located on the outer wall of the support column 21, and the support ring 22 is used to support the float 3; the top of the support column 21 is fixedly connected to the guide rod 23, and the float 3 is slidably connected to the guide rod 23; the limiting block 24 is fixedly located on the top of the guide rod 23, and the limiting block 24 is used to limit the float 3. Limiting rings 25 are slidably connected to both sides of the lever sleeve 6, and both limiting rings 25 are fixedly connected to the hinge shaft 7. A sealing ring 26 is fixedly connected to the outer wall of the valve core 11, and the sealing ring 26 is rotatably connected to the industrial drain pipe 1; the bottom end of the industrial drain pipe 1 is fixedly connected to the drain pipe 27.

[0031] The working principle of this utility model's anti-backflow device for industrial drainage pipelines is as follows;

[0032] Step 1: During installation and connection, connect the downpipe 27 to the anti-backflow pipe port, while the industrial drainage pipe 1 supports the water level diversion pipe 2 to increase the stability of the water level diversion pipe 2.

[0033] Step 2: During counterweight balancing, the counterweight column 15 simultaneously counterweights the support block 14, and the support block 14 counterweights the linkage valve strip 9. This causes the linkage valve strip 9 to be pressed against the linkage plate 16, which in turn presses against the top of the spring 17. The spring 17, in turn, presses against the base plate 18, which in turn counterweights the linkage bar 19. The linkage bar 19 supports the reinforcing block 20, which is in turn supported by the industrial drain pipe 1. The reinforcing block 20 supports the linkage bar 19, which in turn provides support to the base plate 18. The linkage valve strip 9 remains horizontal, allowing it to be opened via the valve core 11 on the rotating shaft 10.

[0034] Step 3: During backflow prevention, when blocked, industrial water will flow upward through the downpipe 27 into the industrial drain pipe 1, and then into the water level diversion pipe 2. The water level diversion pipe 2 causes the float 3 to float and move upward, which in turn moves the hinge rod 4 upward. The hinge rod 4 then moves the linkage shaft 5 upward, which in turn moves the bottom of the lever sleeve 6 upward. The top of the lever sleeve 6 then rotates the hinge shaft 7 clockwise. The hinge shaft 7 rotates the two limit rings 25 clockwise, which in turn rotates the linkage block 8 clockwise. The linkage block 8 causes the linkage valve strip 9 to rotate clockwise, and the rotating shaft 10 rotates clockwise. The rotating shaft 10 rotates stably clockwise inside the sealing sleeve 12 and the sealing ring 13, and also rotates the valve core 11 clockwise. The valve core 11 then rotates the sealing ring 26 clockwise, thus sealing the inner wall of the industrial drain pipe 1 and preventing backflow.

[0035] Step 4: During the guiding process, when float 3 rises, it slides upwards along the outer wall of guide rod 23. Simultaneously, water level diversion pipe 2 supports pillar 21, pillar 21 supports support ring 22, and support ring 22 supports the bottom of float 3. Float 3 then begins to slide upwards along the outer wall of guide rod 23. When limit block 24 limits float 3, it effectively blocks the position of water level diversion pipe 2, thus preventing industrial water from overflowing from inside water level diversion pipe 2.

[0036] All contents not described in detail in the specification are existing technologies known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited; conventional equipment can be used. Electrical control components not mentioned in this technical solution are not shown in the figures because they are existing technologies, and will not be described here.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An anti-backflow device for industrial drainage pipes, comprising an industrial drainage pipe (1) and a water level diversion pipe (2), characterized in that: The water level diversion pipe (2) is fixedly connected to the outer wall of the industrial drainage pipe (1), and a floating lever assembly is provided inside the water level diversion pipe (2); The floating lever assembly includes a float (3) that is slidably disposed inside the water level diversion pipe (2). A hinge rod (4) is fixedly connected to the top of the outer wall of the float (3). A linkage shaft (5) is fixedly connected to one side of the inner wall of the hinge rod (4). A lever sleeve (6) is rotatably connected to the outer wall of the linkage shaft (5). A hinge shaft (7) is rotatably connected to the inner wall of the lever sleeve (6) at a position away from the linkage shaft (5). A linkage block (8) is fixedly installed at one end of the hinge shaft (7), and a linkage valve strip (9) is fixedly connected to the outer wall of the linkage block (8). A rotating shaft (10) is fixedly installed on the side of the linkage valve strip (9), and a valve core (11) is fixedly connected to one end of the rotating shaft (10).

2. The anti-backflow device for industrial drainage pipelines according to claim 1, characterized in that: The float (3) is slidably connected to the water level diversion pipe (2), and the outer wall of the float (3) is a smooth surface.

3. The anti-backflow device for industrial drainage pipelines according to claim 1, characterized in that: The lever sleeve (6) is hinged to the hinge rod (4), and the center point of the linkage shaft (5) is lower than the center point of the hinge shaft (7). The rotating shaft (10) is rotatably connected to the industrial drain pipe (1), and the valve core (11) is rotatably connected to the industrial drain pipe (1).

4. The anti-backflow device for industrial drainage pipelines according to claim 1, characterized in that: A sealing sleeve (12) is rotatably connected to the outer wall of the rotating shaft (10), and a sealing ring (13) is fixedly connected to one end of the sealing sleeve (12). The sealing ring (13) is rotatably connected to the rotating shaft (10). The sealing sleeve (12) is fixedly connected to the industrial drainage pipe (1).

5. The anti-backflow device for industrial drainage pipelines according to claim 1, characterized in that: The upper surface of the linkage valve strip (9) is provided with a counterweight balancing component; The counterweight balancing assembly includes a support block (14) fixedly installed on the upper surface of the linkage valve bar (9), and a counterweight column (15) is fixedly installed on the upper surface of the support block (14). The counterweight balancing assembly also includes a linkage plate (16), a spring (17), a base plate (18), a linkage bar (19), and a reinforcing block (20). The linkage plate (16) is fixed on the lower surface of the linkage valve strip (9), and the spring (17) is fixed at the bottom end of the linkage plate (16). The base plate (18) is fixed at the bottom end of the spring (17). The linkage strip (19) is fixedly installed on the lower surface of the base plate (18), and the reinforcing block (20) is fixed at one end of the linkage strip (19). The reinforcing block (20) is fixedly connected to the industrial drainage pipe (1).

6. The anti-backflow device for industrial drainage pipelines according to claim 5, characterized in that: The counterweight column (15) is made of lead and has a circular cross-sectional shape.

7. The anti-backflow device for industrial drainage pipelines according to claim 5, characterized in that: The linkage plate (16) and the base plate (18) are symmetrically arranged about the spring (17), and the cross-sectional shape of the linkage plate (16) and the base plate (18) is circular.

8. The anti-backflow device for industrial drainage pipelines according to claim 1, characterized in that: The inner wall of the float (3) is provided with a guide assembly; The guide assembly includes a support column (21), a support ring (22), a guide rod (23), and a limiting block (24); The support column (21) is slidably located on the inner wall of the float (3). The support column (21) is fixedly connected to the water level diversion pipe (2). The support ring (22) is fixedly located on the outer wall of the support column (21). The support ring (22) is used to support the float (3). The top of the support column (21) is fixedly connected to the guide rod (23), and the float (3) is slidably connected to the guide rod (23). The limiting block (24) is fixed at the top of the guide rod (23) and is used to limit the float (3).

9. The anti-backflow device for industrial drainage pipelines according to claim 1, characterized in that: Both sides of the lever sleeve (6) are slidably connected to limit rings (25), and both limit rings (25) are fixedly connected to the hinge shaft (7).

10. The anti-backflow device for industrial drainage pipelines according to claim 1, characterized in that: A sealing ring (26) is fixedly connected to the outer wall of the valve core (11), and the sealing ring (26) is rotatably connected to the industrial drain pipe (1). The bottom end of the industrial drainage pipe (1) is fixedly connected to a downpipe (27).

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