An anti-blocking device for the toilet of a rail vehicle

Abstract

The present invention provides an anti-blocking device for a rail vehicle toilet, belonging to the technical field of vacuum toilets. A dirt pipe hole is provided on the lower plane of the step along the midline of the front part of the bottom plate. Centered on the dirt pipe hole, a vacuum pipe hole is provided in the 45° direction in the second quadrant. A water tank is provided on the upper plane of the step at the rear part of the bottom plate. The high-pressure air pump is located in the high-pressure air pump box on the right side of the water tank; the water outlet of the flushing supercharger is connected to the vacuum toilet through a first water pipe. The tails of two vacuum generating devices are both connected to mufflers and are arranged side by side on the upper plane of the horizontal protruding structure. The front end of the vacuum generating device is connected to the inlet of the solenoid valve through a first vacuum pipe. The outlet of the solenoid valve is connected to the dirt collection box through a second vacuum pipe. The solenoid valve is provided with a switch base; an air inlet hole is provided in the upper part of the excrement discharge pipe of the vacuum toilet. The high-pressure air pump is connected to the air inlet hole through a ventilation pipe; a control box is provided on the back of the vacuum toilet; it is used to prevent the vacuum toilet of the rail vehicle from being blocked.

Description

Technical Field

[0001] The invention belongs to the technical field of vacuum toilet collectors, and in particular relates to an anti-blocking device for vacuum toilet collectors on rail vehicles. Background Art

[0002] In recent years, my country's rail transit has achieved rapid development, and the requirements for passenger comfort and environmental protection have become increasingly higher. While the speed and safety of trains have been improved, the requirements for passenger riding experience during train operation have also received increasing attention from industry insiders, among which the train's feces collection device is of particular concern. According to statistics, the total passenger volume of the national railway in 1416 was about 280 million. Each passenger used the toilet once, and excrement was 0.5 kg, which was about 1.4 million tons per year. The use of traditional direct-discharge toilets will cause great pollution to the environment, while vacuum toilets can collect excrement and reduce environmental pollution.

[0003] The vacuum toilet is mainly composed of 8 major components, which are distributed in three spaces: the equipment installed in the vehicle's toilet includes flushing switch, vacuum toilet, flushing booster, and vacuum generating device; the equipment installed in the vehicle's electrical cabinet includes toilet circuit indicator panel and toilet circuit controller; the equipment installed at the bottom of the vehicle includes waste collection box and electric heater.

[0004] Its main working principle is to open the solenoid valve connected to the vacuum generating device through the toilet circuit controller, the vacuum generating device starts to work, the waste collection box starts to be vacuumed, the flushing booster starts to work, the water booster flushes the toilet, and the flushed vacuum toilet opens the solenoid valve connected to the toilet through the toilet circuit controller, and the waste in the toilet is sucked into the waste collection box.

[0005] Through the above analysis, it can be found that the existing vacuum toilet collector absorbs dirt through high-pressure water flow and vacuum suction, but it cannot cope with blockage. When toilet paper or plastic bags enter the vacuum toilet, the toilet collector cannot be used. Therefore, for the toilet collector of the rail vehicle, a compact structure, small size, compact structure, can use the in-vehicle components, high efficiency, easy installation and disassembly and other functions are required. The anti-blocking device of the rail vehicle toilet collector provided by the present invention uses the pressure sensor in the dirt collection box to measure the air pressure in the box to judge the blockage situation. When blockage occurs, the high-pressure gas of the high-pressure air pump compresses the blockage, and the partition is used to isolate the high-pressure gas from the toilet. While completing the function of collecting stools, the entire device cleverly uses the air pressure changes in the dirt collection box and the original high-pressure air pump device in the car to detect and solve the blockage of the vacuum toilet. Only a very small structure needs to be added, and the blockage is absorbed by combining high-pressure gas and vacuum suction to improve the absorption capacity. The flushing process is a spontaneous process, which is efficient and environmentally friendly, has no discomfort to passengers, and is very valuable for solving existing problems. Summary of the invention

[0006] The object of the present invention is to provide a clogging prevention device for a rail vehicle toilet, which can effectively solve the technical problem of clogging of a vacuum toilet.

[0007] The object of the present invention is achieved by the following technical solutions: A clogging prevention device for a rail vehicle toilet includes a vacuum toilet fixed to a bottom plate. A flushing booster is fixed to the bottom plate by bolts. A waste collection box is located below the bottom plate. The vacuum toilet and the waste collection box are connected by a fecal discharge pipe and a waste pipe. The bottom plate is a long strip structure with a first-stage special-shaped step and a high-pressure air pump box at the rear. The left side of the first-stage special-shaped step has a horizontal protruding structure. A waste pipe hole is provided on the lower plane of the step along the front midline of the bottom plate. Centered on the waste pipe hole, a vacuum pipe hole is provided in the 45° direction in the second quadrant. A water tank is provided on the upper plane of the step at the rear of the bottom plate. The high-pressure air pump is located in the high-pressure air pump box on the right side of the water tank; the water outlet of the water tank is connected to the water inlet of the flushing booster through a second water pipe, and the water outlet of the flushing booster is connected to the vacuum toilet through a first water pipe. The tails of two vacuum generating devices are both connected to a silencer and arranged side by side on the upper plane of the horizontal protruding structure. The front end of the vacuum generating device is connected to the inlet of an electromagnetic valve through a first vacuum pipe. The outlet of the electromagnetic valve is connected to the waste collection box through a second vacuum pipe. The electromagnetic valve is provided with a switch base; an air inlet hole is provided in the upper part of the fecal discharge pipe of the vacuum toilet. The high-pressure air pump is connected to the air inlet hole through a ventilation pipe; a control box is provided on the back of the vacuum toilet; at the relative position of the upper part of the fecal discharge pipe and the air inlet hole, a high-pressure opening is provided above and a flushing opening is provided below; a partition seat is provided on the right side of the high-pressure opening, and a plug seat is provided on the right side of the flushing opening; the front end of the partition is in a tapered blade shape and the tail end is fixed to one end of a push rod. The other end of the push rod passes through a stroke controller and is fixed to a push column; the front end of the plug is in a columnar shape and the tail end is fixed to one end of a push rod. The other end of the push rod passes through a stroke controller and is fixed to a push column. Each component in the clogging prevention device is centrally powered by a power supply.

[0008] A jet switch is provided on the inner wall of the control box, and the stroke controller is located inside the control box. A flushing switch is provided on the side wall of the vacuum toilet.

[0009] A pressure sensor and its baffle are provided on the inner wall of the upper cover of the waste collection box, and an electric heat tracing heater is provided on the outer side wall of the waste collection box.

[0010] Further, a water tank, a vacuum generating device, and a silencer are provided on the stepped portion of the special-shaped bottom plate. The high-pressure air pump is placed in the high-pressure air pump box inside the stepped portion of the special-shaped bottom plate. The lower end and the side end of the baffle are fixed to the dirt collection box. The air pipe is in transitional fit with the vacuum toilet, the vacuum pipe is in interference fit with the vacuum generating device, the partition plate and the plug are in transitional fit with the control box. The front ends of the partition plate and the plug are in the shape of a straight groove. The outer diameters of the partition plate and the plug are the same as the outer diameter of the opening and larger than the inner diameter of the defecation pipe. The front ends of the partition plate seat and the plug seat are cut out into a semi-circle with the same outer diameter as the opening. The partition plate seat and the plug seat are in transitional fit with the opening, and there is a circular chamfer at the mating position. The entire device is coordinated by the circuit controller and the pipes with different functions in the pipe group.

[0011] Advantages and effects compared with the prior art: The air pressure in the dirt collection box is measured by the pressure sensor in the dirt collection box to judge the blockage situation. When a blockage occurs, the high-pressure gas of the high-pressure air pump presses the blockage, and the partition plate is used to isolate the high-pressure gas from the toilet. While the entire device completes the function of collecting feces, it cleverly utilizes the change of air pressure in the dirt collection box and the original high-pressure air pump device in the vehicle, can detect and solve the blockage of the vacuum toilet, only needs to add very few structures, and improves the absorption capacity by combining the high-pressure gas and the vacuum suction to absorb the blockage. The flushing process is a spontaneous process, which is efficient and environmentally friendly, has no discomfort impact on passengers, and is very valuable for solving existing problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0013] Figure 2 is a schematic diagram of the bottom plate and the water tank structure of the present invention;

[0014] Figure 3 is a schematic diagram of the circuit of the present invention;

[0015] Figure 4 is a schematic diagram of the pipe group structure of the present invention;

[0016] Figure 5 is a schematic diagram of the vacuum toilet structure of the present invention;

[0017] Figure 6 is a schematic diagram of the control box structure of the present invention;

[0018] Figure 7 is a schematic diagram of the assembly structure of the vacuum toilet and the control box of the present invention;

[0019] Figure 8 is a schematic diagram of the dirt collection box structure of the present invention;

[0020] Figure 9 is a schematic diagram of the solenoid valve and the vacuum generating device structure of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0021] As shown Figure 1 in the figure, an anti-clogging device for a toilet on a rail vehicle includes a vacuum toilet 12 fixed to a bottom plate 1. A flushing booster 31 is fixed to the bottom plate 1 by bolts 32. A waste collection box 26 is located below the bottom plate 1. The vacuum toilet 12 and the waste collection box 26 are connected by a feces discharge pipe 15 and a waste pipe 5. The bottom plate 1 is a long strip structure with a first-level special-shaped step and a high-pressure air pump box at the rear. The left side of the first-level special-shaped step has a horizontally protruding structure. A waste pipe hole 2 is provided on the lower plane of the step along the front midline of the bottom plate 1. Centered on the waste pipe hole 2, a vacuum pipe hole 3 is provided in the 45° direction in the second quadrant. A water tank 4 is provided on the upper plane of the step at the rear of the bottom plate 1. A high-pressure air pump 33 is located in the high-pressure air pump box on the right side of the water tank 4. The water outlet of the water tank 4 is connected to the water inlet of the flushing booster 31 through a second water pipe 10. The water outlet of the flushing booster 31 is connected to the vacuum toilet 12 through a first water pipe 9. The tails of two vacuum generating devices 29 are both connected to a silencer 30 and are arranged side by side on the upper plane of the horizontally protruding structure. The front end of the vacuum generating device 29 is connected to the inlet of a solenoid valve 27 through a first vacuum pipe 7. The outlet of the solenoid valve 27 is connected to the waste collection box 26 through a second vacuum pipe 6. The solenoid valve 27 is provided with a switch base 28. An air inlet hole 22 is provided in the upper part of the feces discharge pipe 15 of the vacuum toilet 12. The high-pressure air pump 33 is connected to the air inlet hole 22 through a ventilation pipe 8. A control box 16 is provided on the back of the vacuum toilet 12. At the relative position of the upper part of the feces discharge pipe 15 and the air inlet hole 22, a high-pressure opening is provided above and a flushing opening is provided below. A partition seat 17 is provided on the right side of the high-pressure opening, and a plug seat 18 is provided on the right side of the flushing opening. The front end of a partition 13 is in a conical blade shape, and the tail end is fixed to one end of a push rod. The other end of the push rod passes through a stroke controller 21 and is fixed to a push column 19. The front end of a plug 14 is in a columnar shape, and the tail end is fixed to one end of a push rod. The other end of the push rod passes through the stroke controller 21 and is fixed to the push column 19. Each component in the anti-clogging device is centrally powered by a power supply 34.

[0022] Further, a jet switch 20 is provided on the inner wall of the control box 16, and the stroke controller 21 is located inside the control box 16. A flushing switch 11 is provided on the side wall of the vacuum toilet 12.

[0023] Further, a pressure sensor 23 and its baffle 24 are provided on the inner wall of the upper cover of the waste collection box 26, and an electric heat tracing device 25 is provided on the outer side wall of the waste collection box 26.

[0024] This anti-clogging device for the toilet of rail vehicles uses a pressure sensor in the sewage collection tank to measure the air pressure in the tank and determine the clogging situation. When clogging occurs, the high-pressure gas from the high-pressure air pump compresses the clogging object, and a partition is used to isolate the high-pressure gas from the toilet bowl. While completing the function of collecting feces, the device cleverly utilizes the change in air pressure in the sewage collection tank and the original high-pressure air pump device in the vehicle to detect and solve the clogging problem of the vacuum toilet. Only a very small number of structures need to be added. By combining the high-pressure gas and the vacuum suction to absorb the clogging object, the absorption capacity is improved. The flushing process is a spontaneous process, which is efficient and environmentally friendly, has no discomfort impact on passengers, and is very valuable for solving existing problems. When a passenger presses the flushing switch, the water tank supplies water through a water pipe, and high-pressure water flow is formed after passing through the flushing booster. At the same time, the solenoid valve opens and the vacuum generating device starts to extract air from the sewage collection tank, and the silencer effectively reduces the noise of extracting air. At this time, the stroke controller controls the plug to push out and cooperate with the feces discharge pipe to isolate the air between the sewage collection tank and the vacuum toilet. When the sewage collection tank is in a vacuum state, the high-pressure water flow rushes into the vacuum toilet and flushes the feces into the feces discharge pipe. At this time, the stroke controller controls the plug to retract, and the feces are sucked into the sewage collection tank due to the vacuum pressure. When the climate is cold and the feces freeze, the electric heating tape heats the sewage collection tank. When clogging occurs, the pressure sensor in the sewage collection tank detects that the air pressure has not increased to the threshold value, and the stroke controller triggers the partition to move forward. The baffle in the sewage collection tank can prevent excessive sewage from affecting the operation of the pressure sensor. The partition is in the front of the feces discharge pipe, and the front end of the partition is semi-conical, which can effectively cut most of the clogging sewage. When the opening of the feces discharge pipe cooperates with the partition seat and the plug seat, through holes are provided, and circular chamfers are provided at the through holes. The chamfers can leave a certain space for the sewage when the partition and the plug move forward and backward to prevent clogging. When the forward stroke of the partition ends, the push rod fixed to the partition presses the air jet switch, and the impeller of the high-pressure air pump operates at high speed, generating high-pressure gas that passes through the ventilation pipe and rushes into the air pipe hole at the lower end of the high-pressure opening. Through the high-pressure gas and the vacuum pressure, the sewage is discharged into the sewage collection tank. When the air pressure in the sewage tank returns to the set value, the stroke controller controls the partition to retract, and the high-pressure flushing process ends.

[0025] During the entire power supply process, when the flushing switch is closed to connect the power supply, the vacuum generating device in the sewage collector starts to evacuate, and the water released from the water tank forms high-pressure water flow after passing through the flushing booster. These two actions are controlled by the main controller in a sequential order. The signal of the pressure sensor is sent to the stroke controller in the control box, and the stroke controller controls the strokes of the plug and the partition. Initially, the stroke controller is connected to the plug and controls the plug to retract when the high-pressure water flow flushes. If the pressure sensor detects that the pressure drops to the threshold value, it indicates that no clogging has occurred, and the position of the stroke controller remains unchanged, controlling the plug to push out; if the pressure sensor detects that the pressure has not dropped to the threshold value, it indicates that clogging has occurred, and the stroke controller is connected to the partition, controlling the partition to push out. When the partition pushes out, it hits the air jet switch, causing the high-pressure air pump to release high-pressure gas and wash away the clogging object.

[0026] The specific embodiments described in the present invention do not constitute a limitation on the scope of the present application. Any modifications, equivalent substitutions, improvements, etc. that can be made by professionals in the field within the spirit and principle of the concept of the present invention should be included within the protection scope of the present invention.

Claims

1. An anti-blocking device for a rail vehicle toilet, comprising a vacuum toilet (12) fixed to a bottom plate (1). A flushing booster (31) is fixed to the bottom plate (1) by bolts (32). A dirt collection box (26) is located below the bottom plate (1). The vacuum toilet (12) is connected to the dirt collection box (26) through a feces discharge pipe (15) and a dirt pipe (5). It is characterized in that: The bottom plate (1) is a long strip structure with a first-level special-shaped step and a high-pressure air pump box at the rear. The left side of the first-level special-shaped step has a horizontally protruding structure. A dirt pipe hole (2) is provided on the lower plane of the step along the front midline of the bottom plate (1). Centered on the dirt pipe hole (2), a vacuum pipe hole (3) is provided in the 45° direction in the second quadrant. A water tank (4) is provided on the upper plane of the step at the rear of the bottom plate (1). The high-pressure air pump (33) is located in the high-pressure air pump box on the right side of the water tank (4). The water outlet of the water tank (4) is connected to the water inlet of the flushing booster (31) through a second water pipe (10). The water outlet of the flushing booster (31) is connected to the vacuum toilet (12) through a first water pipe (9). The tails of both vacuum generating devices (29) are connected to silencers (30) and are arranged side by side on the upper plane of the horizontally protruding structure. The front end of the vacuum generating device (29) is connected to the inlet of a solenoid valve (27) through a first vacuum pipe (7). The outlet of the solenoid valve (27) is connected to the dirt collection box (26) through a second vacuum pipe (6). The solenoid valve (27) is provided with a switch base (28). An air inlet hole (22) is provided in the upper part of the feces discharge pipe (15) of the vacuum toilet (12). The high-pressure air pump (33) is connected to the air inlet hole (22) through a ventilation pipe (8). A control box (16) is provided on the back of the vacuum toilet (12). At the relative position of the upper part of the feces discharge pipe (15) and the air inlet hole (22), a high-pressure opening is provided above and a feces flushing opening is provided below. A partition seat (17) is provided on the right side of the high-pressure opening, and a plug disc seat (18) is provided on the right side of the feces flushing opening. The front end of the partition (13) is in a conical blade shape, and the tail end is fixed to one end of a push rod. The other end of the push rod passes through a stroke controller (21) and is fixed to a push column (19). The front end of the plug disc (14) is in a columnar shape, and the tail end is fixed to one end of a push rod. The other end of the push rod passes through the stroke controller (21) and is fixed to the push column (19). Each component in the anti-blocking device is centrally powered by a power supply (34). A jet switch (20) is provided on the inner wall of the control box (16), and the stroke controller (21) is located inside the control box (16). A flushing switch (11) is provided on the side wall of the vacuum toilet (12). A pressure sensor (23) and its baffle (24) are provided on the inner wall of the upper cover of the dirt collection box (26), and an electric heat tracing device (25) is provided on the outer wall of the dirt collection box (26).

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