A backwater prevention joint of a scrubber

Abstract

The utility model discloses a kind of anti-water back joint of scrubber, belong to joint device technical field, a kind of anti-water back joint of scrubber, including joint main body, water supply pipeline and water outlet pipeline are connected respectively in joint main body two ends, and anti-backflow component is set in joint main body, anti-backflow component is used to realize to sewage backflow, it can realize the action of sliding rod and sealing hemisphere by water flow direction automatic drive, realized when the low resistance unobstructed of clean water forward flow, and the sensitive response and efficient sealing of sewage reverse backflow. Multiple elastic strips not only can assist sealing hemisphere to be quickly reset when water flow stops or counter pressure and enhance sealing pressure, simultaneously avoid the failure problem caused by impurity jam.

Description

Technical Field

[0001] This utility model relates to the field of connector device technology, and more specifically, to a backflow prevention connector for a floor scrubber. Background Technology

[0002] With the widespread application of automated cleaning equipment, floor scrubbers, as efficient floor cleaning tools, have been widely used in public places such as shopping malls, hospitals, and airports. Floor scrubbers typically deliver clean water to cleaning components such as brushes through water supply pipes, while simultaneously recycling wastewater into a wastewater tank, achieving a cycle of cleaning and recycling.

[0003] However, during the use of floor scrubbers, due to changes in system pressure, shutdowns, pipe blockages, or improper operation, wastewater often flows back along the pipes, causing it to backflow into the clean water tank or water supply line. This not only contaminates the clean water but also affects the normal operation and cleaning effect of the equipment. Existing anti-backflow structures are mostly simple one-way valves with limited sealing performance and sensitivity. They are prone to failure due to impurities or poor sealing, and cannot effectively solve the problem of wastewater backflow. Therefore, there is an urgent need for a backflow prevention connector with a reasonable structure, efficient sealing, and reliable operation to ensure the hygiene safety and operational reliability of floor scrubbers.

[0004] Therefore, a backflow prevention connector for floor scrubbers is proposed to address the above-mentioned problems. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a backflow prevention connector for floor scrubbers. This connector automatically drives the sliding rod and sealing hemisphere according to the water flow direction, achieving low-resistance smooth flow when clean water flows forward, and sensitive response and efficient sealing when wastewater flows back. Multiple elastic strips not only assist the sealing hemisphere in quickly returning to its original position and enhancing the sealing pressure when the water flow stops or there is back pressure, but also prevent failure caused by impurities blocking the flow.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A backflow prevention connector for a floor scrubber includes a connector body, with a water supply pipe and a water outlet pipe connected to both ends of the connector body, and an anti-backflow component is provided inside the connector body to prevent sewage backflow.

[0010] Furthermore, the anti-backflow assembly includes a fixing ring, a bracket is fixedly connected to the middle of the fixing ring, a fixing cylinder is fixedly connected to one end of the bracket, and a sliding rod is slidably connected inside the fixing cylinder.

[0011] Furthermore, the inner wall of the fixed cylinder is fixedly connected with a plurality of evenly distributed elastic strips, one end of each elastic strip being fixedly connected to a sliding rod.

[0012] Furthermore, a movable ring is fixedly connected to one end of the slide rod, and multiple evenly distributed force plates are fixedly connected to the inner wall of the movable ring, with the multiple force plates being inclined.

[0013] Furthermore, a connecting rod is fixedly connected to the middle of the plurality of force-bearing plates, a sealing hemisphere is fixedly connected to one end of the connecting rod, and a force-bearing block is fixedly connected to one end of the sealing hemisphere. The sealing hemisphere is hemispherical in shape, and the force-bearing block is conical in shape.

[0014] Furthermore, a sealing ring is installed on the inner wall of the connector body, and the sealing hemisphere abuts against the outer surface of the sealing ring.

[0015] 3. Beneficial effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] This solution innovatively combines components such as a fixed ring, bracket, fixed cylinder, sliding rod, moving ring, inclined force plate, connecting rod, sealing hemisphere, force block, and sealing ring to construct a backflow prevention assembly with significant synergistic effect. Compared with existing backflow prevention structures that rely solely on simple one-way valves, this solution automatically drives the sliding rod and sealing hemisphere according to the water flow direction, achieving low-resistance smooth flow when clean water flows forward and sensitive response and efficient sealing when sewage flows backward. Multiple elastic strips not only assist the sealing hemisphere in quickly returning to its original position and enhancing sealing pressure when water flow stops or back pressure occurs, but also prevent failure caused by impurities. The force block and inclined force plate further optimize the force distribution and conversion, enabling the sealing assembly to maintain good sealing performance under various operating conditions. The overall structure effectively overcomes the defects of traditional one-way valves, such as insufficient sealing performance and sensitivity, easy blockage by impurities, and poor sealing. It prevents the risk of sewage backflow, significantly improves the hygiene safety and operational reliability of the floor scrubber's water supply system, and extends the service life of the equipment. It has significant practical value and promotion prospects. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the anti-backflow component structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the fixing ring structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the sealing hemispherical structure of this utility model.

[0022] Explanation of the labels in the diagram:

[0023] 1. Connector body; 2. Anti-backflow assembly; 11. Sealing ring; 21. Fixing ring; 22. Bracket; 23. Fixing cylinder; 24. Slide rod; 25. Moving ring; 26. Force plate; 27. Connecting rod; 28. Sealing hemisphere; 29. ​​Force block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example:

[0028] Please see Figure 1-4 A backflow prevention connector for a floor scrubber includes a connector body 1, with a water supply pipe and a water outlet pipe connected to both ends of the connector body 1, and an anti-backflow component 2 is provided inside the connector body 1 to prevent sewage backflow.

[0029] The backflow prevention connector is a key component specifically designed for use in the water supply system of floor scrubbers. Its core function is to prevent backflow of wastewater or dirty water during operation or shutdown. When cleaning, the floor scrubber typically delivers clean water through a supply line to the cleaning components such as brushes and spray nozzles, while the wastewater generated after cleaning is recycled back to the wastewater tank through another line. Due to the variable working environment of floor scrubbers, pressure fluctuations, shutdowns, and pipe blockages frequently occur in the water system, easily leading to wastewater backflow along the original pipeline direction. This contaminates the clean water tank and the water supply system, affecting the cleaning effect and the hygiene of the equipment.

[0030] The anti-backflow connector is specifically designed to meet these needs. By installing an anti-backflow component between the water supply and outlet pipes, it ensures one-way water flow. When clean water flows normally into the floor scrubber, the anti-backflow connector is open, ensuring unobstructed water supply. When backflow pressure occurs, the anti-backflow component automatically closes, sealing the water path and preventing wastewater from flowing back. This structure ensures the floor scrubber's water supply system remains hygienic and safe, effectively extending the equipment's lifespan.

[0031] The backflow prevention connector in this solution includes a connector body 1, whose two ends are connected to the water supply pipe and water outlet pipe of the floor scrubber, respectively. The connector body 1 is equipped with an anti-backflow component 2, which can automatically switch according to changes in fluid pressure and direction. Specifically, when the floor scrubber is in normal water supply mode, clean water flows into the connector body 1 through the water supply pipe under water pressure, pushing the anti-backflow component 2 to open, allowing water to flow smoothly into all water-using components inside the floor scrubber, achieving efficient water supply.

[0032] When the floor scrubber stops operating, or when the pressure in the outlet pipe exceeds the pressure in the supply pipe due to pipe blockage, a drop in the clean water tank level, or changes in external pressure, there is a risk that sewage or dirty water may flow back into the clean water system. In this situation, the anti-backflow component 2 can quickly close under reverse water flow or pressure, forming a reliable seal that blocks the sewage backflow path and effectively prevents sewage from entering the clean water tank or supply system.

[0033] The aforementioned anti-backflow connector enables one-way water flow and automatic sealing, ensuring that the floor scrubber maintains the cleanliness and safety of the water supply system under various working conditions, greatly improving the equipment's hygiene protection capabilities and operational reliability.

[0034] The anti-backflow assembly 2 includes a fixing ring 21, a bracket 22 fixedly connected to the middle of the fixing ring 21, a fixing cylinder 23 fixedly connected to one end of the bracket 22, and a sliding rod 24 slidably connected inside the fixing cylinder 23.

[0035] The inner wall of the fixed cylinder 23 is fixedly connected with multiple evenly distributed elastic strips. One end of each elastic strip is fixedly connected to the slide rod 24. One end of the slide rod 24 is fixedly connected to a movable ring 25. The inner wall of the movable ring 25 is fixedly connected with multiple evenly distributed force plates 26. The force plates 26 are inclined.

[0036] A connecting rod 27 is fixedly connected to the middle of multiple load-bearing plates 26. A sealing hemisphere 28 is fixedly connected to one end of the connecting rod 27. A load-bearing block 29 is fixedly connected to one end of the sealing hemisphere 28. The sealing hemisphere 28 is hemispherical, and the load-bearing block 29 is conical.

[0037] A sealing ring 11 is installed on the inner wall of the connector body 1, and the sealing hemisphere 28 abuts against the outer surface of the sealing ring 11.

[0038] During normal operation of the floor scrubber and when the water supply pipeline is in operation, water flows in from the fixed ring 21 at one end of the connector body 1, passes through the bracket 22, fixed cylinder 23, moving ring 25, force plate 26, and connecting rod 27, and finally flows to the side of the force block 29 and enters the outlet pipeline. When the water flows through the moving ring 25, it exerts a pushing force on the multiple inclined force plates 26, pushing the moving ring 25 to move in the direction of water flow. Since the moving ring 25 is fixedly connected to the slide rod 24, the slide rod 24 drives the connected sealing hemisphere 28 and force block 29 to move towards the water outlet direction, i.e., the side of the force block 29. During this process, the slide rod 24 overcomes the tension of multiple elastic strips in the fixed cylinder 23, causing the sealing hemisphere 28 to gradually detach from the tight contact with the sealing ring 11, opening the water flow channel in the connector body 1, thereby ensuring that clean water can flow smoothly and supply the water system inside the floor scrubber.

[0039] When the floor scrubber stops operating, or when the water level in the clean water tank is too low, external pressure changes, or the pressure in the downstream water outlet pipe is higher than that in the upstream water supply pipe due to pipe blockage, resulting in a backflow of sewage or dirty water, the water flow direction reverses. The water flows from the side of the force-bearing block 29 to the side of the fixed ring 21. At this time, the reverse water flow first contacts the force-bearing block 29 at the foremost position. Since the force-bearing block 29 has a conical structure, it can effectively disperse the impact of the reverse water flow and direct the main pressure to the edge of the sealing hemisphere 28. The reverse water flow continues to act on the sealing hemisphere 28. Under the combined action of the back pressure of the water flow and the tension of multiple elastic strips, the sealing hemisphere 28 is pushed back to its original position, so that its outer surface is tightly fitted with the sealing ring 11, forming a ring seal. Since the sealing hemisphere 28 and the sealing ring 11 are in surface contact, the sealing effect is good, which can effectively block the backflow path of sewage or dirty water and prevent contamination of the clean water tank or water supply pipe.

[0040] The presence of multiple elastic strips ensures that the sealing hemisphere 28 can quickly return to its original position when there is no water flow or reverse water flow, and enhances the sealing pressure. Even when there are slight pressure fluctuations in the pipeline, it can always maintain a good sealing state, thereby achieving dynamic adaptive sealing. At the same time, the inclined arrangement of the force plate 26 not only helps to transmit the thrust in the direction of water flow, but also further enhances the sensitivity and reliability of the action, ensuring the rapid response of the sealing assembly under different operating conditions.

[0041] Through the coordinated action of various components, low-resistance and smooth flow are achieved during forward water supply, and efficient sealing is achieved during reverse flow. This ensures smooth water supply during the operation of the floor scrubber, effectively eliminates the risk of sewage backflow, and improves the hygiene, safety, and service life of the equipment.

[0042] Working principle:

[0043] During normal operation of the floor scrubber, clean water flows in from the water supply pipe through the fixed ring 21 at one end of the connector body 1, and then passes sequentially through the bracket 22, fixed cylinder 23, moving ring 25, force plate 26, and connecting rod 27, finally flowing to the force block 29 and entering the outlet pipe. When the water flows through the moving ring 25, it exerts a pushing force on the multiple inclined force plates 26, causing the moving ring 25 and the sliding rod 24 to move together towards the force block 29, overcoming the tension of the elastic strip inside the fixed cylinder 23, and moving the sealing hemisphere 28 and the force block 29 away from the sealing ring 11, thereby opening the water flow channel and achieving a smooth supply of clean water. When the floor scrubber stops operating or the pressure in the outlet pipe is higher than that in the water supply pipe due to pipe blockage, external pressure changes, or other reasons, the water flow direction reverses, flowing from the force block 29 side to the fixed ring 21 side. At this point, the reverse water flow first acts on the conical force-bearing block 29, dispersing and concentrating the pressure on the edge of the sealing hemisphere 28. Under the combined action of the water flow back pressure and the elastic strip tension, the sealing hemisphere 28 quickly returns to its original position, tightly fitting against the sealing ring 11 to form a surface contact seal, effectively blocking the backflow path of sewage or dirty water. The synergistic effect of multiple elastic strips ensures that the sealing hemisphere 28 can reliably reset even under slight pressure fluctuations. The inclined setting of the force-bearing plate 26 further optimizes the hydrodynamic transmission and action sensitivity. The overall structure automatically switches the state of the sealing components by the water flow direction, achieving low-resistance unobstructed flow during forward water supply and efficient sealing during reverse backflow, ensuring the cleanliness and safety of the floor scrubber's water supply system and significantly improving the reliability and lifespan of the equipment.

[0044] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A backflow prevention connector for a floor scrubber, comprising a connector body (1), characterized in that: The connector body (1) is connected to a water supply pipe and a water outlet pipe at both ends, and an anti-backflow component (2) is provided inside the connector body (1). The anti-backflow component (2) is used to block the backflow of sewage. The anti-backflow component (2) includes a fixing ring (21), a bracket (22) is fixedly connected to the middle of the fixing ring (21), a fixing cylinder (23) is fixedly connected to one end of the bracket (22), and a sliding rod (24) is slidably connected inside the fixing cylinder (23). Multiple evenly distributed elastic strips are fixedly connected to the inner wall of the fixing cylinder (23), and one end of each elastic strip is fixedly connected to the sliding rod (24). One end of the sliding rod (24) is fixedly connected to... There is a movable ring (25), and multiple uniformly distributed force plates (26) are fixedly connected to the inner wall of the movable ring (25). The multiple force plates (26) are inclined. A connecting rod (27) is fixedly connected in the middle of the multiple force plates (26). A sealing hemisphere (28) is fixedly connected to one end of the connecting rod (27). A force block (29) is fixedly connected to one end of the sealing hemisphere (28). The shape of the sealing hemisphere (28) is set as hemispherical, and the shape of the force block (29) is set as conical. A sealing ring (11) is installed on the inner wall of the connector body (1). The sealing hemisphere (28) abuts against the outer surface of the sealing ring (11).

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