CN111687150A - Pull-type black water tank cleaning device and method for motor home - Google Patents

Abstract

The invention relates to a cleaning device, in particular to a pull-out type black water tank cleaning device and a cleaning method for a caravan.

Description

A kind of RV pull-out type black water tank cleaning device and cleaning method

technical field

The invention relates to a cleaning device, in particular to a cleaning device and a cleaning method for a pull-out black water tank of an RV.

Background technique

The black water tank is a general term for a box that contains filth. The black water tank of the RV is a box specially used to collect the waste water discharged from the toilet in the RV. It is divided into two categories: fixed type and pull-out type. During the journey of the RV, the black water tank, as one of the indispensable parts in the RV, often has the problem that the accumulated sewage and dirt cannot be discharged to the camp in time. If the capacity of the box is increased, biogas may also be generated, posing a safety hazard.

Due to the lack of RV campsites and incomplete equipment in China, most of the RV black water tanks adopt a pull-out structure, and the pull-out black water tanks are now cleaned with degradants and poured into toilets, sewers or RV campsites to store sewage. The degrading agent used cannot completely degrade the dirt, and some dirt will remain in the black water tank. If it is not cleaned, it will affect the comfort of the environment in the RV for a long time. The degrading agent chemicals in it have a certain impact on the environment. In addition, after the black water tank is filled with dirt, the weight is heavy. If it is dragged to the toilet to be dumped, it requires a certain amount of physical strength and wastes manpower.

SUMMARY OF THE INVENTION

In order to solve the problem of dirt residue in the black water tank of the RV existing in the prior art, the present invention provides a pull-out black water tank cleaning device and a cleaning method for the RV which can clean the dirt in the black water tank of the RV.

The technical solution adopted by the present invention to solve the technical problem is as follows: a pull-out type black water tank cleaning device for RVs, including cleaning supply piles for sewage discharge, cleaning and water and electric energy supply, and for crushing and collecting the internal sewage of the black water tank. A sewage suction device for objects, a cleaning gun for cleaning the inner wall of the black water tank, the cleaning supply pile is provided with a faucet, a charging port, a water filling port, a sewage outlet, a self-priming sewage pump and a billing device,

The sewage suction device comprises a water inlet hose, a sewage discharge hose, and a sewage suction head. One end of the water inlet hose is connected to the faucet, the other end is connected to the sewage discharge head, one end of the sewage discharge hose is connected to the sewage outlet, and the other end is connected to the sewage suction head;

The cleaning gun includes a spherical nozzle, and the spherical nozzle can move up and down to clean the inner wall of the box in all directions;

Further, the shape of the sewage suction head is in the shape of a lotus root, and the tail of the sewage suction head has a sewage discharge joint connected with the sewage discharge hose and a water inlet joint connected with the water inlet hose. The sewage pipe connected with the joint, the outer pipe of the sewage pipe leading to the head of the sewage suction head is the water inlet pipe connected with the water inlet joint, the head of the sewage suction head is rotatably connected with an impeller, and the impeller is fixed or integrally formed with a scraper The position of the water outlet of the water inlet pipe corresponds to the position of the scraper, the head of the sewage pipe is fixed with a fixed shaft, and the impeller is rotatably connected to the fixed shaft.

Further, the sewage suction device also includes a connecting end cover fixed on the dumping pipe of the black water tank, and the connecting end cover is provided with a first limit hole for the water inlet hose to pass through, and for the sewage discharge hose to pass through. The second limit hole passed through, and the balance pressure hole for connecting the inside of the black water tank with the atmosphere, the sewage suction device also includes a support ball, and the water inlet hose and the sewage hose are fixed on the support ball The size of the support ball is smaller than or equal to the inner diameter of the dumping pipe of the black water tank, and the sewage suction device also includes a fixed snap ring, and the water inlet hose and the sewage hose are fixed on the fixed snap ring, and the fixed snap ring is located at the Between the support ball and the sewage suction head, a first limit snap ring and a second limit snap ring are fixed on the water inlet hose, and the first limit snap ring and the second limit snap ring are respectively located in the connection On both sides of the end cover, a third limit snap ring and a fourth limit snap ring are fixed on the sewage hose, and the third limit snap ring and the fourth limit snap ring are respectively located on both sides of the connecting end face , the sewage hose is provided with a transparent pipe on the outside of the dumping pipe of the black water tank.

Further, the cleaning gun adopts the structure of a refueling gun. The cleaning gun includes a self-sealing mechanism, a main valve, a switch handle and a sub-valve. The cleaning gun has an inner sealing ring. The sealing ring in the cavity starts with a water hole, and the water hole is connected. The water delivery hose is connected with the spherical nozzle, and the sealing ring is also provided with a through hole, and the through hole is fitted with an intake pipe, one end of the intake pipe extends to the head of the cleaning gun, and the other One end is communicated with the inner cavity of the cleaning cavity, the inner cavity is provided with an automatic control membrane, and the automatic membrane is linked with the self-sealing mechanism.

Further, a telescopic device is provided on the cleaning gun, and the telescopic device includes a casing fixed on the barrel of the cleaning gun, a cleaning rod is slidably arranged in the casing, and a spherical nozzle is arranged on the head of the cleaning rod. There are springs between the rods.

Further, a first limit block and a second limit block are fixed on the draw rod, and the first limit block and the second limit block are respectively located on both sides of the sleeve, and the pipeline of the cleaning gun head is A conical sealing ring is fixed on the outer side, and the conical sealing ring includes a first clamping head and a second clamping head which are matched with the outer baffle chute at the dirt inlet of the black water tank.

Further, the cleaning supply pile is also provided with a cleaning connection that communicates with the cleaning gun, a first electronically controlled ball valve for controlling the opening and closing of the water supply pipeline inside the cleaning supply pile, and a water inlet hose for controlling the cleaning process. The second electric control ball valve of the switch, the first electric control ball valve and the second electric control ball valve are all linked with the billing device, and the cleaning supply pile is also provided with a fixed slot for placing the cleaning gun and for hanging suction. hook of the dirty device.

A cleaning method of the above-mentioned RV pull-out type black water tank cleaning device, including the online sewage discharge mode, the black water tank of the online sewage discharge mode does not need to be removed from the RV, and the online sewage discharge mode includes the following steps:

S11: Open the black water tank door of the RV, break out the black water tank dumping pipe, remove the end cover of the black water tank dumping pipe, and remove the sewage suction device from the hook, so that the sewage suction head enters the black water tank through the black water tank dumping pipe, and the connecting end The cover is connected and fixed with the black water tank dumping pipe through threaded fit.

S12: Scan the QR code on the electronic display screen of the billing device with a mobile phone, start cleaning the supply pile, and at the same time open the first electronically controlled ball valve.

S13: Click the sewage icon on the electronic display screen of the billing device, the self-priming sewage pump starts to work, and at the same time, the second electronically controlled ball valve is opened, and the water outlet of the sewage suction head discharges high-pressure clean water, which impacts the scraper on the upper end of the impeller, and drives the impeller to rotate, smash and Convey the dirt in the black water tank.

S14: Observe the transparent tube. When the conveying water flow is relatively clear, click the stop water inlet icon on the electronic display screen of the billing device, the second electronically controlled ball valve is closed, and the water inlet hose stops entering water. Observe the transparent tube again. When there is no water flow , click the sewage icon on the electronic display screen of the billing device, the self-priming sewage pump stops working, and the sewage discharge ends.

S15: Unscrew the sewage suction device and put it back on the hook, end the sewage service, cover the end cover of the black water tank dumping pipe, break the black water tank dumping pipe back to its original place, close the black water tank door of the RV, and click on the electronic display of the billing device. End the service icon, the first electric control ball valve is closed, scan the QR code, and pay the black water tank sewage fee.

Further, the cleaning method also includes an offline cleaning and sewage mode. In the offline cleaning and sewage mode, the black water tank is removed from the RV and placed on the ground. The offline cleaning and sewage mode includes the following steps:

S21: Remove the drained black water tank and the sewage suction device from the RV, and place the black water tank on the ground.

S22: Remove the cleaning gun from the fixed slot, open the dirt inlet above the black water tank, place the cleaning gun cone seal on the inlet, and rotate the cleaning gun body to make the conical sealing ring clamp and the black water tank dirty. The outer baffle chute at the entrance of the material is matched to fix the cleaning gun.

S13: Use the mobile phone to scan the QR code on the electronic display screen of the billing device, start the cleaning supply pile, and at the same time, the first electronically controlled ball valve is opened, and the water flows to the cleaning gun.

S24: Press the switch of the cleaning gun, the clean water enters the gun body, and the water in the cleaning gun enters the spherical nozzle through the auxiliary valve and the water delivery hose to clean the six inner walls of the black water tank. At the same time, the expansion device uses the water pressure and the gravity of the pull rod And spring force to adjust the position of the spherical nozzle, so that it moves up and down to clean the wall of the box.

S25: During the cleaning process, the liquid level in the black water tank continues to rise. When the liquid level is higher than the end face of the outlet of the intake pipe, the port of the intake pipe is blocked, and the cleaning gun automatically jumps.

S26: Click the sewage icon on the electronic display screen of the billing device, and repeat the sewage discharge process of S13 to S14.

S27: After the sewage discharge is completed, remove the sewage suction device and put it back on the hook, take out the cleaning gun and put it back in the fixed card slot, then put the black water tank back in the RV, close the black water tank door of the RV, and click End on the electronic display of the billing device Service icon, the first electronically controlled ball valve is closed, and the black water tank cleaning and sewage service fees are paid by scanning the QR code on the electronic display screen of the billing device.

Beneficial effects:

(1) The RV pull-out type black water tank cleaning device of the present invention can not only provide water and electricity supply for the RV, but also mechanically clean the dirt in the black water tank, and discharge the dirt into the cleaning supply pile on the spot. The connected sewers avoid environmental pollution caused by the use of chemical degradants;

(2) The present invention is composed of mechanical devices, has good reliability, simple structure and convenient use, and is suitable for RV camps and various service areas of expressways;

(3) In order to meet the different needs of customers, there are two functions of online sewage discharge (the black water tank does not need to be removed) and the offline black water tank cleaning and sewage function (the black water tank needs to be removed from the RV and placed on the ground). The use of degradants causes pollution to water resources. It is suitable for RV camps and various service areas of expressways, so as to create a more comfortable and environmentally friendly driving experience for RV drivers. The device has a simple structure and is easy to use.

Description of drawings

The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

Fig. 1 is the overall schematic diagram of a kind of RV pull-out type black water tank cleaning device;

Fig. 2 is a schematic diagram of the cleaning supply pile structure;

Figure 3 is a schematic structural diagram of a sewage suction device;

Figure 4 is a schematic diagram of the structure of the connection end cap;

Fig. 5 is a schematic diagram of a dirt suction head;

Fig. 6 is a schematic diagram of a cleaning gun structure;

Fig. 7 is a schematic diagram of the structure of the conical sealing ring of the cleaning gun;

Figure 8 is a flow chart of sewage and cleaning.

Among them, 1. Cleaning supply pile, 1-1, faucet, 1-2, charging port, 1-3, water filling port, 1-4, sewage outlet, 1-5, sewage pump, 1-6, billing device, 1-7. Cleaning the joint, 1-8a, The first electric ball valve, 1-8b, The second electric ball valve, 1-9, The fixing slot, 1-10, The hook, 2, The sewage suction device, 2- 1. Water inlet hose, 2-2, Sewage hose, 2-3, Connection end cap, 2-3-1, Balance pressure hole, 2-3-2, First limit hole, 2-3-3 , Second limit hole, 2-4, Support ball, 2-5, Suction head, 2-5-1, Impeller, 2-5-2, Scraper, 2-5-3, Fixed shaft, 2- 5-4, sewage pipe, 2-5-5, sewage joint, 2-5-6, water inlet joint, 2-5-7, water outlet, 2-6, fixed snap ring, 2-7, transparent pipe, 2-8a, first limit snap ring, 2-8b, second limit snap ring, 2-8c, third limit snap ring, 2-8d, fourth limit snap ring, 3, cleaning gun, 3 -1, the inner seal ring of the gun, 3-2, the water hose, 3-3, the tie rod, 3-4a, the first limit block, 3-4b, the second limit block, 3-5, the casing, 3-6, spherical nozzle, 3-7, intake pipe, 3-8, conical sealing ring, 3-8-1, first clamp, 3-8-2, second clamp, 3-9, Self-sealing mechanism, 3-10, main valve, 3-11, switch handle, 3-12, auxiliary valve, 5, black water tank.

Detailed ways

As shown in Figures 1 to 2, a pull-out black water tank cleaning device for an RV includes a cleaning supply pile 1 for sewage discharge, cleaning and water and electric energy supply, and a sewage suction device for crushing and collecting the dirt inside the black water tank 5. 2. The cleaning gun 3 for cleaning the inner wall of the black water tank 5, the cleaning supply pile 1 is provided with a faucet 1-1, a charging port 1-2, a water filling port 1-3, a sewage outlet 1-4, and a self-priming sewage pump 1 -5 and billing devices 1-6,

As shown in Figures 3-4, the sewage suction device 2 includes a water inlet hose 2-1, a sewage discharge hose 2-2, and a sewage suction head 2-5. One end of the water inlet hose 2-1 is connected to the faucet 1-1 , the other end is connected to the sewage head, one end of the sewage hose 2-2 is connected to the sewage outlet 1-4, and the other end is connected to the sewage suction head 2-5;

The cleaning gun 3 includes a spherical nozzle 3-6, which can move up and down to clean the inner wall of the box in all directions.

As shown in Figure 5, the suction head 2-5 is in the shape of a lotus root, and the tail of the suction head 2-5 has a sewage joint 2-5-5 connected with the sewage hose 2-2 and a sewage joint 2-5 connected with the water inlet hose 2-1. The water inlet joint 2-5-6 and the sewage suction head 2-5 have the structure of the casing 3-5 as a whole, and the inner pipe is the sewage pipe 2-5-4 connected with the sewage joint 2-5-5, and the sewage pipe 2-5 -4 The outer pipe of the head leading to the sewage suction head 2-5 is the water inlet pipe connected with the water inlet joint 2-5-6. The head of the sewage suction head 2-5 is rotatably connected with the impeller 2-5-1, the impeller 2 -5-1 is fixed or integrally formed with a scraper 2-5-2, the position of the water outlet 2-5-7 of the water inlet pipe corresponds to the position of the scraper 2-5-2, and the head of the sewage pipe 2-5-4 A fixed shaft 2-5-3 is fixed, and the impeller 2-5-1 is rotatably connected to the fixed shaft 2-5-3.

The sewage suction device 2 also includes a connecting end cover 2-3 fixed on the pouring pipe of the black water tank 5, and the connecting end cover 2-3 is provided with a first limiting hole 2-3 for the water inlet hose 2-1 to pass through. -2. The second limit hole 2-3-3 for the sewage hose 2-2 to pass through, and the balance pressure hole 2-3-1 for connecting the inside of the black water tank 5 with the atmosphere, the sewage suction device 2 also includes a support ball 2-4, the water inlet hose 2-1 and the sewage hose 2-2 are fixed on the support ball 2-4, the size of the support ball 2-4 is less than or equal to the inner diameter of the pouring pipe of the black water tank 5 , the sewage suction device 2 also includes a fixed snap ring 2-6, the water inlet hose 2-1 and the sewage hose 2-2 are fixed on the fixed snap ring 2-6, and the fixed snap ring 2-6 is located on the support ball 2-4 Between the suction head 2-5, the water inlet hose 2-1 is fixed with a first limit snap ring 2-8a and a second limit snap ring 2-8b, and the first limit snap ring 2-8a The second limit snap ring 2-8b and the second limit snap ring 2-8b are respectively located on both sides of the connecting end cover 2-3, and the sewage hose 2-2 is fixed with a second limit snap ring 2-8c and a fourth limit snap ring 2-8d , and the second limit snap ring 2-8c and the fourth limit snap ring 2-8d are respectively located on both sides of the connecting end face, and the sewage hose 2-2 is provided with a section of transparent pipe 2-7 on the outside of the dumping pipe of the black water tank 5 .

As shown in Figures 6 to 7, the cleaning gun 3 adopts the structure of a refueling gun. The cleaning gun 3 includes a self-sealing mechanism 3-9, a main valve 3-10, a switch handle 3-11 and a sub-valve 3-12. The sealing ring 3-1, the water hole starts on the sealing ring 3-1 in the gun, the water hole is connected to the water delivery hose 3-2, the water delivery hose 3-2 is connected with the spherical nozzle 3-6, and the sealing ring is also provided with The through hole is fitted with an air inlet pipe 3-7, one end of the air inlet pipe 3-7 extends to the head of the cleaning gun 3, and the other end of the air inlet pipe 3-7 is communicated with the inner cavity of the cleaning chamber, An automatic control membrane is arranged on the inner cavity, and the automatic membrane is linked with the self-sealing mechanism 3-9.

The cleaning gun 3 is provided with a telescopic device, and the telescopic device includes a sleeve 3-5 fixed on the barrel of the cleaning gun. The sleeve 3-5 is slidably provided with a cleaning rod 3-3, and the spherical nozzle 3-6 is set on the cleaning rod. There is a spring 4-2 between the head of 3-3, the sleeve 3-5 and the cleaning rod 3-3.

A first limit block 3-4a and a second limit block 3-4b are fixed on the pull rod 3-3, and the first limit block 3-4a and the second limit block 3-4b are respectively located on the sleeve 3-5. On both sides, the outer side of the pipe at the head of the cleaning gun 3 is fixed with a conical sealing ring 3-8, and the conical sealing ring 3-8 includes a first chuck 3 that cooperates with the outer baffle chute at the dirt inlet of the black water tank 5 -8-1 and second chuck 3-8-2.

The cleaning supply pile 1 is also provided with a cleaning connection 1-7 communicating with the cleaning gun 3, a first electronically controlled ball valve 1-8a for controlling the opening and closing of the water supply pipeline inside the cleaning supply pile 1, and a first electric control ball valve 1-8a for controlling the inlet and outlet during the cleaning process. The second electric control ball valve 1-8b of the water hose 2-1 switch, the first electric control ball valve 1-8a and the second electric control ball valve 1-8b are all linked with the billing device 1-6. A fixing slot 1-9 for placing the cleaning gun 3 and a hook 1-10 for hanging the dirt suction device 2 are provided.

As shown in Fig. 8, a cleaning method of the above-mentioned RV pull-out type black water tank cleaning device, comprising the black water tank 5 of the online sewage mode online sewage mode does not need to be removed from the RV, and the online sewage mode includes the following steps:

S11: Open the black water tank door of the RV, break out the black water tank dumping pipe, remove the end cap of the black water tank dumping pipe, remove the sewage suction device 2 from the hooks 1-10, and make the sewage suction head 2-5 pass through the black water tank dumping pipe Entering into the black water tank, the connecting end caps 2-3 are connected and fixed with the black water tank dumping pipe through screw fitting.

S12: Scan the two-dimensional code on the electronic display screen of the billing device 1-6 with a mobile phone, start the cleaning supply pile 1, and simultaneously open the first electronically controlled ball valve 1-8a.

S13: Click the sewage icon on the electronic display screen of the billing device 1-6, the self-priming sewage pump 1-5 starts to work, at the same time the second electronically controlled ball valve 1-8b is opened, and the sewage suction head 2-5 water outlet 2-5- 7. Discharge high-pressure clean water, impact the scraper 2-5-2 on the upper end of impeller 2-5-1, drive the impeller to rotate, crush and transport the dirt in the black water tank.

S14: Observe the transparent tube 2-7, when the water flow is relatively clear, click the stop water inlet icon on the electronic display screen of the billing device 1-5, the second electronically controlled ball valve 1-8b is closed, and the water inlet hose 2-1 stops Into the water, observe the transparent pipe 2-7 again, when there is no water flow, click the sewage icon on the electronic display screen of the billing device 1-6, the self-priming sewage pump 1-5 stops working, and the sewage discharge ends.

S15: Then choose whether to clean the inner wall of the black water tank 5. If cleaning is not required, unscrew the sewage suction device 2 and put it back on the hooks 1-10 to end the sewage service. Cover the end cap of the black water tank dumping pipe, and break the black water tank dumping pipe. Return to the original place, close the black water tank door of the RV, click the end service icon on the electronic display screen of the billing device 1-6, the first electronically controlled ball valve 1-8a is closed, scan the QR code, and pay the black water tank sewage fee.

If you need to clean the inner wall of the black water tank, perform the following offline cleaning and sewage mode.

In the offline cleaning and sewage mode, the black water tank 5 is removed from the RV and placed on the ground. The offline cleaning and sewage mode includes the following steps:

S21: Remove the drained black water tank together with the sewage suction device 2 from the RV, and place the black water tank 5 on the ground.

S22: Remove the cleaning gun 3 from the fixed card slots 1-9, open the dirt inlet above the black water tank, place the cleaning gun 3 conical sealing ring 3-8 on the inlet, rotate the cleaning gun 3 gun body to make the cone The clamping head of the 3-8 shape sealing ring cooperates with the outer baffle chute at the dirt inlet of the black water tank to fix the cleaning gun 3.

S13: Use the mobile phone to scan the QR code on the electronic display screen of the billing device 1-6, start the cleaning supply pile 1, and at the same time, the first electronically controlled ball valve 1-8a is opened, and the water flows to the cleaning gun.

S24: Press the switch 3-11 of the cleaning gun 3, clean water enters the gun body, and the water in the cleaning gun enters the spherical nozzle 3-6 through the sub-valve 3-12 and the water delivery hose 3-2 to the six inner walls of the black water tank During cleaning, the telescopic device 3-5 uses the water pressure, the gravity of the pull rod 3-3 and the spring force to adjust the position of the spherical nozzle 3-6, so that it moves up and down to clean the wall of the box.

S25: During the cleaning process, the liquid level in the black water tank continues to rise. When the liquid level is higher than the outlet end face of the inlet pipe 3-7, the inlet pipe 3-7 is blocked, and the cleaning gun 3 can automatically jump the gun.

S26: Click the sewage icon on the electronic display screen of the charging device 1-6, and repeat the sewage discharge process of S13-S14.

S27: After the sewage discharge, remove the sewage suction device 2 and put it back on the hooks 1-10, take out the cleaning gun 3 and put it back in the fixing slots 1-9, put the black water tank back in the RV, close the black water tank door of the RV, and click the button. The end service icon on the electronic display screen of the charging device 1-6, the first electronically controlled ball valve 1-8a is closed, and the black water tank cleaning and sewage service fee is paid by scanning the QR code on the electronic display screen of the charging device.

The water filling port 1-3 and the sewage outlet 1-4 of the cleaning supply pile 1 are provided with threads, which are convenient for quick loading and unloading of relevant pipelines.

The sewage pump 1-5 is arranged inside the cleaning supply pile 1, the sewage inlet of the sewage pump 1-5 is connected with the sewage outlet 1-4 of the cleaning supply pile 1 through the pipeline, and the sewage inlet of the sewage pump 1-5 is connected with the sewer through the pipeline.

The billing device 1-6 of the cleaning supply pile 1 adopts time-based charging, and provides the RV with black water tank sewage discharge, cleaning service and water and electricity energy supply by scanning the two-dimensional code on the display screen of the billing device 1-6 through the mobile phone. Then scan the QR code again to complete the settlement of related fees.

The connecting end cover 2-3 is connected with the thread on the dumping pipe of the black water tank through its own thread, and the balanced pressure hole on the connecting end cover 2-3 ensures that the black water tank will not generate positive or negative pressure during the cleaning and sewage process.

Both ends of the water inlet hose 2-1 and the sewage hose 2-2 are provided with threads. Connection; the sewage hose 2-2 consists of three sections, the two ends are respectively connected with the sewage suction head 2-5 and the sewage outlet 1-4, and the middle section is the transparent pipe 2-7; the transparent pipe 2-7 is located in the sewage hose 2 -2 On the outer side of the black water tank dumping pipe, both ends are provided with threads to connect with the sewage hose 2-2, which is used to observe the sewage situation when the black water tank 5 is discharged.

The water inlet hose 2-1 and the sewage hose 2-2 are all synthetic rubber pipes, the inner rubber is ultra-high molecular weight polyethylene (UHMWPE), the outer rubber is EPDM synthetic rubber, and the surface of the hose is corrugated. This hose not only has good corrosion resistance, aging resistance, weather resistance, ozone resistance, abrasion resistance and good bending radius, but also the corrugated outer wall ensures better flexibility.

The support ball 2-4 is used to fix and support the sewage hose 2-2 and the water inlet hose 2-1. On the one hand, due to its spherical structure, it is convenient for the sewage hose 2-2 and the water inlet hose 2-1 to be installed in the black water tank. On the other hand, when the black water tank 5 discharges sewage, it can not only support the sewage hose 2-2 and the water inlet hose 2-1, but also prevent the sewage suction head 2-5 from hitting the inner wall of the black water tank 5.

The sewage suction head 2-5 is connected to the sewage pump 1-5 inside the cleaning supply pile 1 through a pipeline. The sewage suction head 2-5 is naturally perpendicular to the bottom of the box due to its own gravity, which ensures the stability of the pipeline during the sewage discharge process. Provide power to discharge the dirt from the black water tank 5 .

The sewage suction head 2-5 is in the shape of a lotus root, which is convenient for it to advance and retreat in the dumping pipe of the black water tank. The material is stainless steel, and the inside is a casing structure. The impeller 2-5-1 is installed, and the kinetic energy of the high-pressure water flow in the outer tube of the casing is used to impact the scraper 2-5-2 on the upper end of the impeller 2-5-1, and the impeller 2-5-1 is driven to rotate and crush. And convey the dirt in the black water tank 5; the high-pressure water flow can strengthen the disturbance and circulation at the bottom of the black water tank to prevent the accumulation of dirt and block the sewage suction heads 2-5.

The cleaning gun 3 adopts the structure of a refueling gun. When cleaning the inner wall, the liquid level in the black water tank 5 continues to rise. When the water level rises to the entrance of the air intake pipes 3-7, the gas nozzle is blocked, and the automatic control film inside the cleaning gun 3 is The negative pressure is formed to drive the self-sealing mechanism 3-9 to move upward, and the self-sealing mechanism 3-9 drives the main valve 3-10 and the auxiliary valve 3-12 to close to realize automatic gun jumping. The specific structure can refer to the refueling gun.

The nozzles of the cleaning gun 3 are spherical nozzles 3-6, and the water outlet holes of the same size are evenly arranged on the spherical surface, so that the six walls of the black water tank 5 can be cleaned in all directions without dead ends.

The nozzle of the cleaning gun 3 is connected to the telescopic device. The telescopic device is composed of the pull rod 3-3, the sleeve 3-5 and the upper and lower limit blocks. The sleeve 3-5 has a built-in spring, and the force of the spring on the pull rod 3-3 can be upward. It can also be downward. In the present invention, the force of the spring on the pull rod 3-3 can be upward, and the spring force of the spring and the gravity of the pull rod 3-3 are used to adjust the movement of the spherical nozzle 3-6. The inner wall of the black water tank 5 can be cleaned by manually controlling the pull rod 3-3 to move the spherical nozzle 3-6 up and down rapidly. The first limit block 3-4a and the second limit block are respectively set above and below the pull rod 3-3. 3-4b, limit the moving range of the spherical nozzle.

A conical sealing ring 3-8 is fixed on the outer wall of the barrel of the cleaning gun 3, and a first clamping head 3-8-1 and a second clamping head 3-8-2 are respectively provided on both sides of the upper end of the conical sealing ring 3-8. Rotating the gun body can match the first clamping head 3-8-1 and the second clamping head 3-8-2 with the outer baffle chute at the dirt inlet of the black water tank to fix the cleaning gun 3 .

As shown in FIG. 1, the charging devices 1-6 are electronic display screens, which are installed on the outer surface of the cleaning supply pile 1, and are used for process display and control, display of consumption details and payment of the final total cost; the cleaning gun connection is 1-7 is connected to the cleaning gun 3 through a hose; the first electronically controlled ball valve 1-8a is linked with the billing device 1-6 to control the opening and closing of the water inlet pipe inside the cleaning supply pile, the internal water channel and the cleaning gun The second electric control ball valve 1-8b is linked with the charging device 1-6 to control the on-off of the water inlet hose 2-1 during the cleaning process; the fixed card slot 1-9 is used to place the cleaning gun 3 ; The hooks 1-10 are used to hang the sewage suction device 2.

The two ends of the water inlet hose 2-1 are respectively connected with the water inlet hose joint 2-5-6 and the water filling port 1-3 of the cleaning supply pile 1; the sewage hose 2-2 is divided into two sections, and the middle part is made of transparent The pipes 2-7 are connected, and the two ends are respectively connected with the sewage hose joint 2-5-5 and the sewage outlet 1-4 of the cleaning supply pile 1; the water inlet hose 2-1 and the sewage hose 2-2 extend into the black water tank The length of the inner section is 35-40mm, and the vertical section of the pipeline is 18-20mm, and the first limit is provided on the water inlet hose 2-1 and the sewage hose 2-2 on the left and right sides of the connecting end cover 2-3 Snap ring 2-8a, second limit snap ring 2-8b, third limit snap ring 2-8c and fourth limit snap ring 2-8d, for water inlet hose 2-1 and sewage hose 2 -2 Axial fixation; support 2-4 diameter 35~45mm, due to its spherical structure, it is convenient for the water inlet hose 2-1 and the sewage hose 2-2 to enter and exit the black water tank dumping pipe, and at the same time the black water tank 5 discharges sewage not only can support the water inlet hose 2-1 and the sewage discharge hose 2-2, but also prevent the sewage suction head 2-5 from colliding with the inner wall of the black water tank 5; the sewage suction head 2-5 is used to crush and collect the sewage inside the black water tank When the sewage suction device 2 is installed on the dumping pipe of the black water tank, the sewage suction head 2-5 is 40 to 60 mm away from the inner wall surface of the bottom of the black water tank; the fixing ring 2-6 prevents the pipes from intertwining and affects the transportation; the transparent pipe 2-7 It is used to observe the sewage in the black water tank 5 when the black water tank is drained.

As shown in Figure 5, the sewage suction head 2-5 includes an impeller 2-5-1, a scraper 2-5-2, a sewage pipe fixing shaft 2-5-3, a sewage pipe 2-5-4, and a sewage hose joint 2-5-5, the water inlet hose joint 2-5-6, the water outlet 2-5-7; the impeller 2-5-1 is installed on the fixed shaft 2-5-3 of the sewage pipe, the impeller 2-5-1 There is a scraper 2-5-2 on the periphery of the upper end. When the black water tank is discharging sewage, the sewage is discharged from the black water tank through the sewage pipe 2-5-4, the sewage hose joint 2-5-5 and the sewage hose 2-2. 5, and at the same time, clean water enters the suction head 2-5 through the water inlet hose joint 2-5-6, and then is discharged from the water outlet 2-5-7, so that the high-speed water flow impacts the scraper 2-5-2 to drive the impeller Rotate 2-5-1 to smash the soft solids in the dirt inside the black water tank to avoid blockage of the 2-5-4 orifice of the sewage pipe.

As shown in Figure 6, for the structure of the cleaning gun 3, after the cleaning gun switch opens 3-11, it drives the self-sealing mechanism 3-9, the main valve 3-10, and the auxiliary valve 3-12 to move, and clean water passes through the main valve 3-10. Enter the gun body, enter the spherical nozzle 3-6 through the auxiliary valve 3-12 and the water delivery hose 3-2 to clean the six inner walls of the black water tank 5. -3 gravity and spring force to adjust the movement of spherical nozzles 3-6, and you can also manually control pull rod 3-3 to move up and down quickly to clean the wall of black water tank 5. During the cleaning process, the liquid level in the tank continues to rise. When the level is higher than the outlet end face of the intake pipe 3-7, the port of the intake pipe 3-7 is blocked, and the self-control film inside the cleaning gun 3 forms a negative pressure to drive the self-sealing mechanism 3-9 to move upward, thereby driving the main valve 3-10 And the auxiliary valve 3-12 is closed, the switch releases 3-11, and the automatic jump gun is realized.

It should be understood that the specific embodiments described above are only used to explain the present invention, but not to limit the present invention. Obvious changes or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims (9)

1. an RV pull-out type black water tank cleaning device, is characterized in that: comprise the cleaning supply pile (1) that is used for sewage discharge, cleaning and water, electric energy supply, for pulverizing and collecting the dirt inside the black water tank (5) A sewage suction device (2), a cleaning gun (3) for cleaning the inner wall of the black water tank (5), the cleaning supply pile (1) is provided with a faucet (1-1), a charging port (1-2), a charging port (1-2), a Water outlet (1-3), sewage outlet (1-4), self-priming sewage pump (1-5) and billing device (1-6), The sewage suction device (2) comprises a water inlet hose (2-1), a sewage discharge hose (2-2), and a sewage suction head (2-5), and one end of the water inlet hose (2-1) is connected to a faucet. (1-1) connection, the other end is connected to the sewage head, one end of the sewage hose (2-2) is connected to the sewage outlet (1-4), and the other end is connected to the sewage suction head (2-5); The cleaning gun (3) includes a spherical spray head (3-6), and the spherical spray head (3-6) can move up and down to clean the inner wall of the box in all directions. 2. A kind of RV pulling-type black water tank cleaning device according to claim 1, characterized in that: the sewage suction head (2-5) is in the shape of a lotus root, and the tail of the sewage suction head (2-5) has the same soft and soft discharge. The sewage joint (2-5-5) connected with the pipe (2-2) and the water inlet joint (2-5-6) connected with the water inlet hose (2-1), the sewage suction head (2-5) is integral It is the structure of the casing (3-5), the inner pipe is the sewage pipe (2-5-4) connected with the sewage joint (2-5-5), and the sewage pipe (2-5-4) leads to the sewage suction head ( The outer pipe of the head of 2-5) is a water inlet pipe that communicates with the water inlet joint (2-5-6), and the head of the sewage suction head (2-5) is rotatably connected with an impeller (2-5-1) , the impeller (2-5-1) is fixed or integrally formed with a scraper (2-5-2), and the position of the water outlet (2-5-7) of the water inlet pipe is the same as the position of the scraper (2-5-2) Correspondingly, the head of the sewage pipe (2-5-4) is fixed with a fixed shaft (2-5-3), and the impeller (2-5-1) is rotatably connected to the fixed shaft (2-5-3). )superior. 3. A RV pulling-type black water tank cleaning device according to claim 1, characterized in that: the sewage suction device (2) further comprises a connecting end cover (2-3) fixed on the pouring pipe of the black water tank (5) ), the connecting end cover (2-3) is provided with a first limit hole (2-3-2) for the water inlet hose (2-1) to pass through, and a first limit hole (2-3-2) for the sewage hose (2-1) to pass through. -2) The second limit hole (2-3-3) passing through, and the balance pressure hole (2-3-1) for connecting the inside of the black water tank (5) with the atmosphere, the sewage suction device (2) also includes a support ball (2-4), the water inlet hose (2-1) and the sewage hose (2-2) are both fixed on the support ball (2-4), and the support ball (2-2) The size of -4) is less than or equal to the inner diameter of the pouring pipe of the black water tank (5), the sewage suction device (2) further comprises a fixing snap ring (2-6), and the water inlet hose (2-1) and the sewage hose (2-2) are fixed on the fixed snap ring (2-6), and the fixed snap ring (2-6) is located between the support ball (2-4) and the sewage suction head (2-5), so the The water inlet hose (2-1) is fixed with a first limit snap ring (2-8a) and a second limit snap ring (2-8b), and the first limit snap ring (2-8a) and the second limit snap ring (2-8b) are respectively located on both sides of the connecting end cover (2-3), and the sewage hose (2-2) is fixed with a second limit snap ring (2-8c). ) and the fourth limit snap ring (2-8d), and the second limit snap ring (2-8c) and the fourth limit snap ring (2-8d) are located on both sides of the connecting end face, respectively, and the sewage hose ( 2-2) A section of transparent pipe (2-7) is arranged on the outside of the pouring pipe of the black water tank (5). 4. A kind of RV pull-out type black water tank cleaning device according to claim 1 is characterized in that: the cleaning gun (3) adopts the fuel gun structural form, and the cleaning gun (3) comprises a self-sealing mechanism (3-9), a main The valve (3-10), the switch handle (3-11) and the auxiliary valve (3-12), the cleaning gun (3) has an inner gun sealing ring (3-1), and the gun inner sealing ring (3- 1) Start the water hole on the top, the water hole is connected to the water delivery hose (3-2), the water delivery hose (3-2) is connected with the spherical nozzle (3-6), and the sealing ring is also provided with a through hole, the through hole An air inlet pipe (3-7) is fitted inside, one end of the air inlet pipe (3-7) extends to the head of the cleaning gun (3), and the other end of the air inlet pipe (3-7) is connected to the inner part of the cleaning chamber. The cavity is communicated, the inner cavity is provided with an automatic control membrane, and the automatic membrane is linked with the self-sealing mechanism (3-9). 5. A kind of caravan pulling type black water tank cleaning device according to claim 4 is characterized in that: the cleaning gun (3) is provided with a telescopic device, and the telescopic device comprises a sleeve fixed on the barrel of the cleaning gun (3). The pipe (3-5), the sleeve (3-5) is slidably provided with a cleaning rod (3-3), and the spherical nozzle (3-6) is arranged on the head of the cleaning rod (3-3). There is a spring (4-2) between the pipe (3-5) and the cleaning rod (3-3). 6. A RV pull-out type black water tank cleaning device according to claim 5, characterized in that: a first limit block (3-4a) and a second limit block ( 3-4b), the first limit block (3-4a) and the second limit block (3-4b) are respectively located on both sides of the sleeve (3-5), the cleaning gun (3) The outer side of the pipe of the head is fixed with a conical sealing ring (3-8), and the conical sealing ring (3-8) includes a first clamping head ( 3-8-1) and the second chuck (3-8-2). 7. A kind of RV pull-out type black water tank cleaning device according to claim 1 is characterized in that: the cleaning supply pile (1) is also provided with a cleaning connection (1) that communicates with the cleaning gun (3). -7), the first electric control ball valve (1-8a) used to control the opening and closing of the water supply pipeline inside the cleaning supply pile (1) and the second electric control ball valve (1-8a) used to control the switch of the water inlet hose (2-1) during the cleaning process The ball control valve (1-8b), the first electric control ball valve (1-8a) and the second electric control ball valve (1-8b) are all linked with the charging device (1-6), and the cleaning supply pile (1) A fixed slot (1-9) for placing the cleaning gun (3) and a hook (1-10) for hanging the sewage suction device (2) are also provided on the upper part. 8. A cleaning method for a RV pull-out type black water tank cleaning device according to any one of claims 1 to 7, characterized in that: the black water tank (5) comprising the online sewage discharge mode does not need to be taken from the RV , the online blowdown mode includes the following steps: S11: Open the black water tank door of the RV, break out the black water tank dumping pipe, remove the end cover of the black water tank dumping pipe, and remove the sewage suction device (2) from the hook (1-10), so that the sewage suction head (2-5 ) into the inside of the black water tank through the black water tank dumping pipe, and the connecting end cover (2-3) is connected and fixed with the black water tank dumping pipe through screw fitting; S12: Use the mobile phone to scan the QR code on the electronic display screen of the charging device (1-6), start the cleaning supply pile (1), and at the same time open the first electronically controlled ball valve (1-8a); S13: Click the sewage icon on the electronic display screen of the billing device (1-6), the self-priming sewage pump (1-5) starts to work, and at the same time the second electronically controlled ball valve (1-8b) is opened, and the sewage suction head (2- 5) The water outlet (2-5-7) discharges high-pressure clean water, and impacts the upper scraper (2-5-2) of the impeller (2-5-1), driving the impeller to rotate, crush and transport the dirt in the black water tank; S14: Observing the transparent pipe (2-7), when the conveying water flow is relatively clear, click the stop water icon on the electronic display screen of the billing device (1-5), the second electronically controlled ball valve (1-8b) is closed, and the water enters Stop the water supply to the hose (2-1), observe the transparent tube (2-7) again, when there is no water flow, click the sewage icon on the electronic display screen of the billing device (1-6), and the self-priming sewage pump (1- 5) Stop work and end the sewage discharge; S15: Unscrew the sewage suction device (2) and put it back on the hook (1-10) to end the sewage service, cover the end cap of the black water tank dumping pipe, break the black water tank dumping pipe back to its original place, close the black water tank door of the RV, click The service end icon on the electronic display screen of the billing device (1-6), the first electronically controlled ball valve (1-8a) is closed, the two-dimensional code is scanned, and the black water tank sewage fee is paid. 9. The cleaning method of the RV pull-out type black water tank cleaning device according to claim 8, characterized in that: it further comprises an offline cleaning and sewage mode, and in the offline cleaning and sewage mode, the black water tank (5) is removed from the RV Placed on the ground, the offline cleaning and sewage mode includes the following steps: S21: Remove the drained black water tank (5) together with the sewage suction device (2) from the RV and place it on the ground; S22: Remove the cleaning gun (3) from the fixing slot (1-9), open the dirt inlet above the black water tank, place the cleaning gun (3) conical sealing ring (3-8) on the inlet, and pass the Rotate the gun body of the cleaning gun (3) so that the clamping head of the conical sealing ring (3-8) is matched with the outer baffle chute at the dirt inlet of the black water tank to fix the cleaning gun (3); S13: Use the mobile phone to scan the QR code on the electronic display screen of the billing device (1-6), start the cleaning supply pile (1), and at the same time the first electronically controlled ball valve (1-8a) is opened, and the water flows to the cleaning gun; S24: Press the switch (3-11) of the cleaning gun (3), clean water enters the gun body, and the water in the cleaning gun enters the spherical nozzle (3) through the auxiliary valve (3-12) and the water delivery hose (3-2). -6) Clean the six inner walls of the black water tank, and at the same time, the telescopic device (3-5) adjusts the position of the spherical nozzle (3-6) by using the water pressure, the gravity of the pull rod (3-3) and the spring force, so that the Move up and down to clean the wall of the box; S25: During the cleaning process, the liquid level in the black water tank continues to rise. When the liquid level is higher than the outlet end face of the intake pipe (3-7), the port of the intake pipe (3-7) is blocked, and the cleaning gun (3) is realized. automatic jump gun; S26: Click the sewage icon on the electronic display screen of the billing device (1-6), and repeat the sewage discharge process from S13 to S14; S27: After the sewage discharge, remove the sewage suction device (2) and put it back on the hook (1-10), take out the cleaning gun (3) and put it back in the fixing slot (1-9), and then put the black water tank back into the RV, Close the black water tank door of the RV, click the end service icon on the electronic display screen of the billing device (1-6), the first electronically controlled ball valve (1-8a) is closed, and scan the QR code on the electronic display screen of the billing device. Pay for black water tank cleaning and sewerage services.

Images