A black water tank cleaning device for a recreational vehicle

Abstract

The utility model discloses a kind of motor home black water tank cleaning devices, specifically related to black water tank cleaning technical field, including black water tank, black water tank top end is communicated with blow-off pipe, black water tank side is provided with water pump, water pump output end is communicated with water delivery pipe, water pump input end is communicated with water suction pipe, water pump side is provided with ash water tank, ash water tank side is communicated with connecting port, black water tank outside is equipped with cleaning assembly, connecting port outside is equipped with sealing mechanism;Cleaning assembly includes first connecting pipe.The utility model is by being provided with cleaning assembly, it can be sprayed with 40 ° range using three nozzles, cooperate with bearing and rotate 180 ° under the action of water flow, help to make water flow concentrated effect in the specific direction inside black water tank, and can be sprayed in different directions, so that the area of each nozzle responsible can be fully and effectively washed, help to improve the cleaning effect inside black water tank.

Description

Technical Field

[0001] This utility model relates to the field of black water tank cleaning technology, and more specifically, to a black water tank cleaning device for RVs. Background Technology

[0002] A black water tank is a general term for a container used to hold waste. RV black water tanks are specifically designed to collect wastewater discharged from the toilet inside the RV, and they are divided into two main categories: fixed and pull-out. During RV travel, the black water tank, as an essential component, often faces the problem of not being able to promptly discharge accumulated wastewater and filth to the campsite. Over time, the filth adheres to the inner wall of the tank, reducing its capacity and potentially producing biogas, posing a safety hazard.

[0003] In actual use, the cleaning of existing RV black water tanks mostly relies on simple water rinsing or manual brushing, which leaves many cleaning dead spots, such as the corners of the tank, the back of the baffle, and around the liquid level sensor. This makes it very easy for dirt to stick to the walls, clump together, and produce stubborn odors. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a black water tank cleaning device for RVs to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A black water tank cleaning device for RVs includes a black water tank, a drain pipe connected to the top of the black water tank, a water pump installed on one side of the black water tank, a water supply pipe connected to the output end of the water pump, a water suction pipe connected to the input end of the water pump, a grey water tank installed on one side of the water pump, a connection port connected to one side of the grey water tank, a cleaning component installed on the outside of the black water tank, and a sealing mechanism installed on the outside of the connection port.

[0007] The cleaning assembly includes a first connecting pipe, which is connected to one end of a water supply pipe. A connecting frame is fixedly connected inside the black water tank. The inner side of the connecting frame is threadedly connected to the outer side of the first connecting pipe. A bearing is threadedly connected to the inner side of the connecting frame. A connecting pipe is sleeved on the inner side of the bearing. A nozzle is connected to the bottom end of the connecting pipe. Three nozzles are connected to the outer side of the nozzle. The spraying range of the nozzle 13 is 40°.

[0008] By adopting the above technical solution, the tilt range inside the black water tank can be expanded, thereby enabling thorough rinsing of the inside of the black water tank.

[0009] As a further description of the above technical solution: the sealing mechanism includes a core, the outer side of which is threaded to the inner side of the connection port; a rubber check valve is provided on the outer side of the water pumping pipe; a first rubber gasket is fixedly connected to one side of the connection port; a second connecting pipe is threaded to the inner side of the core, the second connecting pipe communicates with the inner side of the connection port; the second connecting pipe and the first connecting pipe can be made of stainless steel; one end of the second connecting pipe communicates with one end of the water pumping pipe; a fixing ring is fixedly connected to the outer side of the second connecting pipe; a second rubber gasket is fixedly connected to one side of the fixing ring; and a filter screen is welded inside the second connecting pipe.

[0010] By adopting the above technical solution, a sealing effect can be provided at both ends of the core, so that the outside of the connection port can maintain good sealing performance during the process of rinsing the black water tank with grey water.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. This invention creatively solves the cleaning problem of black water tanks by combining fixed spraying at a specific angle with limited-angle rotation driven by water flow. Three nozzles distributed at a certain angle (e.g., 40°) ensure high-intensity, concentrated rinsing of a fan-shaped area at any given moment, overcoming the disadvantage of dispersed water pressure in a single rotating nozzle. Simultaneously, the reciprocating rotation of the bearings driven by water flow (e.g., 180°) ensures that this high-intensity rinsing area can systematically cover the entire inner wall of the black water tank. This collaborative working mode of 'fixed-point intense washing' and 'orderly scanning' achieves highly efficient cleaning of the complex structure of the black water tank without dead angles, an effect far superior to that of fixed nozzles or circumferential rotating nozzles.

[0013] 2. This utility model's sealing mechanism addresses the common issue of inconsistent grey water tank connection sizes in RVs. Through a core-filling adapter structure, it achieves a quick, universal, and reliable connection between the cleaning device and different RV models. Its double rubber gasket sealing design is particularly well-suited to the vibration environment of RVs during operation, ensuring no leakage under system operating pressure, thus improving system reliability and user experience. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic cross-sectional view of the black water tank of this utility model.

[0016] Figure 3 This is a schematic cross-sectional view of the grey water tank of this utility model.

[0017] Figure 4 This is a schematic diagram of the nozzle structure of this utility model.

[0018] Figure 5 For the present utility model Figure 2 Enlarged view of the structure of part A in the middle.

[0019] Figure 6 For the present utility model Figure 3 Enlarged view of the structure of part B.

[0020] The attached diagram is labeled as follows: 1. Black water tank; 2. Sewage pipe; 3. Water pump; 4. Water supply pipe; 5. Pumping pipe; 6. Grey water tank; 7. Connection port; 8. First connecting pipe; 9. Connecting frame; 10. Bearing; 11. Connecting pipe; 12. Spray head; 13. Nozzle; 14. Filler core; 15. First rubber gasket; 16. Second connecting pipe; 17. Fixing ring; 18. Second rubber gasket; 19. Filter screen; 20. Rubber check valve. Detailed Implementation

[0021] 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.

[0022] The embodiments disclosed in this application are as follows: Figure 1-6 The RV black water tank cleaning device shown includes a black water tank 1, a drain pipe 2 connected to the top of the black water tank 1, a water pump 3 installed on one side of the black water tank 1, a water supply pipe 4 connected to the output end of the water pump 3, a water suction pipe 5 connected to the input end of the water pump 3, a gray water tank 6 installed on one side of the water pump 3, a connection port 7 connected to one side of the gray water tank 6, a cleaning component installed on the outside of the black water tank 1, and a sealing mechanism installed on the outside of the connection port 7.

[0023] The cleaning assembly includes a first connecting pipe 8, which is connected to one end of a water supply pipe 4. A connecting frame 9 is fixedly connected inside the black water tank 1. The inner side of the connecting frame 9 is threadedly connected to the outer side of the first connecting pipe 8. A bearing 10 is threadedly connected to the inner side of the connecting frame 9. A connecting pipe 11 is sleeved inside the bearing 10. A nozzle 12 is connected to the bottom end of the connecting pipe 11. Three nozzles 13 are connected to the outer side of the nozzle 12. The spray range of the nozzles 13 is 40°. The bearing 10 is threadedly connected to the inner side of the connecting frame 9, and the first connecting pipe 8 is threadedly connected to the inner side of the connecting frame 9. The connection allows the water pump 3 to deliver the grey water to the bearing 10. Under the impact of the water flow, the bearing 10 can drive the nozzle 12 to rotate 180° on the second rubber pad. At the same time, under the pressure of the water pump 3, the three nozzles 13 can spray within a 40° range, thus achieving rotating spraying inside the black water tank 1. This ensures that during the cleaning process, the area covered by each nozzle 13 can be thoroughly and effectively rinsed, preventing incomplete cleaning or omissions due to an excessively large spray range.

[0024] Reference Figure 3 and 6 As shown, the sealing mechanism includes a sealing core 14, the outer side of which is threaded to the inner side of the connection port 7. A rubber check valve 20 is installed on the outer side of the water pumping pipe 5. A first rubber gasket 15 is fixedly connected to one side of the connection port 7. A second connecting pipe 16 is threaded to the inner side of the sealing core 14, and the second connecting pipe 16 communicates with the inner side of the connection port 7. The materials of the second connecting pipe 16 and the first connecting pipe 8 can be stainless steel. One end of the second connecting pipe 16 is connected to one end of the water pumping pipe 5. A fixing ring 17 is fixedly connected to the outer side of the second connecting pipe 16. A second rubber gasket 18 is fixedly connected to one side of the fixing ring 17. A filter screen 19 is welded inside the second connecting pipe 16. The core 14 is threaded to the inner side of the connection port 7, allowing the core 14 and the connection port 7 to make rigid contact. This allows the core 14 and the connection port 7 to compress the first rubber gasket 15. At the same time, the core 14 is threaded to the outer side of the second connecting pipe 16, allowing the core 14 and the fixing ring 17 to compress the second rubber gasket 18. This provides a sealing effect at both ends of the core 14, so that during the process of rinsing the black water tank 1 with grey water, the first rubber gasket 15 and the second rubber gasket 18 can prevent grey water from leaking out from the connection, and the outer side of the connection port 7 can maintain good sealing performance.

[0025] Working principle of this utility model: This utility model designs a black water tank cleaning device for RVs, the specific structure of which is shown in the attached instruction manual. Figure 1-6As shown, in this technical solution, through the cooperation of various structures, when it is necessary to clean the inside of the black water tank 1, the sewage inside the black water tank 1 is first discharged. Then, the core 14 is connected to the connection port 7 by threads. The threads allow the core 14 to move inside the connection port 7, so that the core 14 can be rigidly connected to the connection port 7. This allows the core 14 and the connection port 7 to compress the first rubber gasket 15, thereby providing a sealing effect at the connection between the core 14 and the connection port 7. The second connecting pipe 16 at one end of the suction pipe 5 is then connected to the core 14 by threads, so that the core 14 and the second connecting pipe 16 are rigidly connected. The second connecting pipe 16 can drive the fixing ring 17 to move towards the core 14, so that the core 14 and the fixing ring 17 can compress the second rubber gasket 18, thereby allowing the second rubber gasket 18 to provide a seal for the core 14. 4 provides a sealing effect at the connection with the second connecting pipe 16. Then, the bearing 10 is connected to the internal thread of the connecting frame 9, and the connecting pipe 11 is inserted into the inside of the bearing 10. Then, the first connecting pipe 8 at one end of the water supply pipe 4 is connected to the internal thread of the connecting frame 9, and the water pump 3 is started. Under the action of the water pump 3, the gray water in the gray water tank 6 can be extracted and transported to the inside of the connecting frame 9. While extracting the gray water, the filter screen 19 inside the second connecting pipe 16 can filter the impurities in the gray water. The water then transported will be delivered to the nozzle 12 through the connecting pipe 11 so that the three nozzles 13 can spray. Under the action of the water pump 3, the bearing 10 can rotate the second rubber gasket 180° under the impact of the water flow, which matches the 40° spray angle of the three nozzles 13, so as to better cover the area inside the black water tank 1 that needs to be cleaned, and achieve a comprehensive cleaning of the black water tank 1.

[0026] In the accompanying drawings of the embodiments disclosed in this utility model, only the structures involved in the embodiments of this utility model are shown. Other structures can be referred to with ordinary design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0027] 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 existing technologies and are therefore not shown in the figures and will not be described here.

[0028] In conclusion, the above are merely preferred embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A black water tank cleaning device for RVs, comprising a black water tank (1), characterized in that: The top of the black water tank (1) is connected to a drain pipe (2), a water pump (3) is installed on one side of the black water tank (1), a water supply pipe (4) is connected to the output end of the water pump (3), a water pumping pipe (5) is connected to the input end of the water pump (3), a gray water tank (6) is installed on one side of the water pump (3), a connection port (7) is connected to one side of the gray water tank (6), a cleaning component is installed on the outside of the black water tank (1), and a sealing mechanism is installed on the outside of the connection port (7). The cleaning assembly includes a first connecting pipe (8), which is connected to one end of a water supply pipe (4). A connecting frame (9) is fixedly connected inside the black water tank (1), and the inner side of the connecting frame (9) is threadedly connected to the outer side of the first connecting pipe (8). The connecting frame (9) is threaded with a bearing (10) on its inner side. A connecting pipe (11) is sleeved on the inner side of the bearing (10). A nozzle (12) is connected to the bottom end of the connecting pipe (11). Three nozzles (13) are connected to the outer side of the nozzle (12). The spraying range of the nozzles (13) is 40°.

2. The RV black water tank cleaning device according to claim 1, characterized in that: The sealing mechanism includes a core (14), the outer side of which is threaded to the inner side of the connection port (7), a rubber check valve (20) is provided on the outer side of the water pumping pipe (5), and a first rubber gasket (15) is fixedly connected to one side of the connection port (7).

3. The RV black water tank cleaning device according to claim 2, characterized in that: The inner side of the core (14) is threaded with a second connecting pipe (16), which is connected to the inner side of the connecting port (7). The materials of the second connecting pipe (16) and the first connecting pipe (8) can be stainless steel.

4. The RV black water tank cleaning device according to claim 3, characterized in that: One end of the second connecting pipe (16) is connected to one end of the pumping pipe (5), and a fixing ring (17) is fixedly connected to the outside of the second connecting pipe (16).

5. The RV black water tank cleaning device according to claim 4, characterized in that: A second rubber gasket (18) is fixedly connected to one side of the fixing ring (17), and a filter screen (19) is welded inside the second connecting pipe (16).

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