Compact water-saving vacuum excrement collector

Abstract

The utility model relates to the technical field of excrement collectors, in particular to a compact and water-saving vacuum excrement collector which comprises a urinal, a sewage tank is mounted below the urinal, a pumping and discharging pipe is mounted at the position, close to the bottom, of the sewage tank, the sewage tank is communicated with the urinal through an excrement discharging pipe, and a vacuum pump is mounted above the sewage tank. The input end of the vacuum pump is fixedly connected with a six-way connector, the six-way connector is fixedly connected with a first connecting pipe and four second connecting pipes, a heat preservation box is fixedly installed on the outer side of the sewage box, and the bottom ends of the four second connecting pipes extend to the positions between the front side, the rear side, the left side and the right side of the sewage box and the heat preservation box correspondingly. The bottom end of the first connecting pipe penetrates through the heat preservation box and extends into the dirt box. The sewage box is wrapped in a vacuum mode through the heat preservation box, the transmission efficiency of internal heat and external heat is reduced, heat preservation is conducted on the sewage box, low-temperature freezing is avoided, and meanwhile vacuum pumping can be conducted synchronously when the sewage box is vacuumized through the vacuum pump in the negative-pressure vacuum state between the sewage box and the heat preservation box.

Description

Technical Field

[0001] This utility model relates to the field of toilet collection technology, specifically to a compact and water-saving vacuum toilet collection device. Background Technology

[0002] Vacuum toilets are commonly used on trains. Their working principle is as follows: before use, the vacuum pump first evacuates the waste tank to a vacuum state. When the waste tank reaches a certain negative pressure, it will automatically stop. At this time, a certain degree of vacuum is maintained in the waste tank. When the user presses the flush button, the water booster in the air-water pan first provides pressurized water to flush the toilet. Then the drain valve opens, and the waste is drawn into the waste tank by the pressure difference generated between the toilet and the waste tank.

[0003] Chinese patent application number 202420624183.3 discloses a vacuum toilet. This vacuum toilet uses an electric heating wire on the waste tank to raise the temperature and prevent ice from forming inside the waste tank. However, the waste tank lacks effective insulation. When the train is running in a cold environment, the low temperature and rapid airflow will quickly carry away the heat from the electric heating wire and the waste tank, resulting in an insignificant heating and anti-icing effect. Moreover, the heating of the electric heating wire consumes electricity, requiring additional power from the train. Utility Model Content

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] A compact, water-saving vacuum toilet includes a toilet bowl, a waste tank installed below the toilet bowl, a drain pipe installed near the bottom of the waste tank, and the waste tank and toilet bowl connected by a drain pipe. An isolation valve is installed on the drain pipe. A vacuum pump is installed above the waste tank, and a six-way connector is fixedly connected to the input end of the vacuum pump. One connecting pipe and four connecting pipes are fixedly connected to the six-way connector. An insulation box is fixedly installed outside the waste tank. The bottom ends of the four connecting pipes extend to the front, back, left, and right sides of the waste tank and the insulation box, respectively. The insulation box and the waste tank are sealed together. The bottom end of the connecting pipe passes through the insulation box and extends into the waste tank.

[0006] Furthermore, multiple support columns are installed between the waste bin and the insulation box. Each support column has a metal sleeve at both ends, and these sleeves are fixedly connected to the corresponding waste bin and insulation box. This ensures a secure and reliable connection between the waste bin and the insulation box, allowing for reliable fixation of the waste bin along with the insulation box after installation.

[0007] Furthermore, both ends of the support column are fitted with rubber sleeves, which are located inside the metal sleeve. The rubber sleeves serve as a spacer to reduce heat conduction between the support column and the metal sleeve.

[0008] Furthermore, the space between the insulated box and the waste bin is filled with insulating cotton, which can be any one or a combination of several of the following: rock wool, fiberglass wool, rubber and plastic insulating cotton, polyurethane foam, polyester fiber insulating cotton, and polyethylene insulating cotton. The insulating cotton, combined with the negative pressure vacuum between the waste bin and the insulated box, provides comprehensive insulation, thereby improving insulation performance.

[0009] Furthermore, sleeves are installed at both ends of the connecting pipe between the waste tank and the insulation box. The sleeves have densely packed ventilation holes, and filter cotton is installed inside the sleeves corresponding to the ventilation holes. The bottom end of the second connecting pipe extends into the sleeve. The filter cotton can block some fibers or materials of the insulation cotton attracted during vacuuming, preventing them from entering the vacuum pump.

[0010] Furthermore, wind deflectors are fixedly installed on the insulated box at both the front and rear ends of the train. This prevents airflow from blowing directly onto the surface of the insulated box while the train is moving, and also blocks rain and snow, making it difficult for them to freeze and adhere to the surface of the insulated box.

[0011] Furthermore, the wind deflector is designed with an arc-shaped structure that bulges outward in the middle and concave at both ends, and is inclined with its bottom approaching the insulation box and its top moving away from the insulation box. The arc-shaped structure helps to break through the wind and reduce air resistance, while the inclined state can guide the air, thus reducing the amount of wind blowing onto the insulation box.

[0012] Furthermore, multiple partitions are fixedly installed inside the waste bin, each with a pre-set connection opening at its bottom. These partitions reduce the impact force of waste on the bin walls under the train's inertia, thus protecting the waste bin.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses an insulated box to vacuum-wrap the waste bin, reducing the heat transfer efficiency between the inside and outside, thereby keeping the waste bin warm and preventing it from freezing at low temperatures. At the same time, the negative pressure vacuum state between the waste bin and the insulated box can be simultaneously evacuated by a vacuum pump while the waste bin is being evacuated, thus controlling the train's power consumption.

[0015] 2. In this utility model, a rubber sleeve is used to separate the support column connecting the waste bin and the insulation box from the metal sleeve. While ensuring the waste bin is reliably fixed, the heat inside and outside is controlled to be conducted through the support column, thereby ensuring the insulation effect of the waste bin.

[0016] 3. In this utility model, the sleeve and filter cotton filter the two openings of the connecting pipe inside the insulation cotton, preventing some insulation cotton fibers from being drawn into the vacuum pump, thus ensuring the reliable operation of the vacuum pump.

[0017] 4. In this utility model, the wind deflector is used to block the wind from the insulated box, which can reduce the impact of low temperature air on the insulated box and prevent rain and snow from freezing and adhering to the surface of the insulated box. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a cross-sectional view of the present invention;

[0020] Figure 3 This is a schematic diagram of the installation of the connecting pipe 2 in this utility model;

[0021] Figure 4 This is an enlarged view of point A in this utility model;

[0022] Figure 5 This is a cross-sectional view of the sleeve in this utility model;

[0023] Figure 6 This is a schematic diagram of the installation of the support column in this utility model;

[0024] Figure 7 This is a cross-sectional view of the support column in this utility model.

[0025] Attached reference numerals: 1. Toilet bowl; 2. Waste bin; 3. Drain pipe; 4. Isolation valve; 5. Vacuum pump; 6. Connecting pipe one; 7. Insulation box; 8. Six-way connector; 9. Connecting pipe two; 10. Support column; 11. Metal sleeve; 12. Rubber sleeve; 13. Insulation cotton; 14. Sleeve; 15. Vent hole; 16. Filter cotton; 17. Drain pipe; 18. Partition plate; 19. Connecting port; 20. Wind baffle plate. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0027] This application provides a compact, water-saving vacuum toilet, primarily addressing the issues raised in the prior art regarding the lack of sufficient insulation in the waste tank and the additional energy consumption required by the heating element to prevent icing. The following technical solution is provided, which will be discussed in conjunction with... Figure 1 - Figure 7 Please provide a detailed explanation:

[0028] A compact, water-saving vacuum toilet includes a toilet bowl 1, a waste tank 2 installed below the toilet bowl 1, a drain pipe 17 installed near the bottom of the waste tank 2, the waste tank 2 and the toilet bowl 1 are connected by a drain pipe 3, an isolation valve 4 is installed on the drain pipe 3, a vacuum pump 5 is installed above the waste tank 2, a six-way connector 8 is fixedly connected to the input end of the vacuum pump 5, and a connecting pipe 6 and four connecting pipes 9 are fixedly connected to the six-way connector 8.

[0029] An insulated box 7 is fixedly installed on the outside of the waste bin 2. The bottom ends of four connecting pipes 9 extend to the front, back, left, and right sides of the waste bin 2 and the insulated box 7 respectively. The insulated box 7 and the waste bin 2 are sealed together. The bottom end of the connecting pipe 6 passes through the insulated box 7 and extends into the waste bin 2.

[0030] Vacuum pump 5 operates, and through the connection of six-way connector 8, it evacuates the waste tank 2 and the space between waste tank 2 and insulation box 7, making its interior a predetermined negative pressure state. When isolation valve 4 is opened, since waste tank 2 and toilet bowl 1 are connected by drain pipe 3, under the positive and negative pressure difference, the waste in toilet bowl 1 will be sucked into waste tank 2 through drain pipe 3. Then isolation valve 4 is closed again, and vacuum pump 5 operates again to evacuate the waste tank 2 and reduce the pressure. In order to prevent the odor in waste tank 2 from entering the space between waste tank 2 and insulation box 7 through six-way connector 8, a valve can be installed on connecting pipe 6 to prevent the odor from passing through. The valve can be opened each time vacuuming is performed.

[0031] Each time the vacuum pump 5 evacuates the waste tank 2, it simultaneously evacuates the space between the waste tank 2 and the insulation box 7, creating a low-pressure vacuum state between them. Since heat is known to be transferred through radiation, conduction, and convection, the low-pressure vacuum state between the waste tank 2 and the insulation box 7 restricts heat transfer, thereby significantly reducing the impact of the external ambient temperature on the temperature inside the waste tank 2 and preventing the waste inside the waste tank 2 from freezing. At the same time, the low-pressure vacuum state between the waste tank 2 and the insulation box 7 is maintained by the existing vacuum pump 5 without adding any additional power-consuming equipment.

[0032] In some embodiments, multiple support columns 10 are installed between the waste bin 2 and the insulated box 7. Both ends of the support column 10 are covered with rubber sleeves 12, and metal sleeves 11 are covered on the outside of the rubber sleeves 12. The metal sleeves 11 at both ends of the support column 10 are fixedly connected to the waste bin 2 and the insulated box 7 at the corresponding positions.

[0033] The support column 10 connects the inner and outer waste bins 2 and the insulation box 7 to ensure sufficient vacuum space between the waste bins 2 and the insulation box 7. At the same time, the contact part between the support column 10 and the metal sleeve 11 is separated by a rubber sleeve 12. Rubber itself has poor thermal conductivity, so while ensuring the installation and fixation of the waste bins 2, the heat transfer path between the waste bins 2 and the external environment is minimized as much as possible.

[0034] In some embodiments, the space between the insulated box 7 and the waste bin 2 is filled with insulating cotton 13, which is any one or a combination of rock wool, glass fiber cotton, rubber and plastic insulating cotton, polyurethane foam cotton, and polyester fiber / polyethylene insulating cotton.

[0035] The insulation cotton 13 is used to fill the space, and the vacuum pump 5 is used to evacuate the space between the waste box 2 and the insulation box 7, which further reduces the heat exchange between the waste box 2 and the external environment. With the heat supplemented by the hot air drawn in by the drain pipe 3 each time the isolation valve 4 is opened, the temperature inside the waste box 2 can be maintained above zero, thereby preventing ice from forming inside the waste box 2.

[0036] In some embodiments, a sleeve 14 is installed at the end of the connecting pipe 2 9 between the waste bin 2 and the insulation box 7. The sleeve 14 has dense ventilation holes 15. Filter cotton 16 is installed inside the sleeve 14 corresponding to the ventilation holes 15. The bottom end of the connecting pipe 2 9 extends into the sleeve 14.

[0037] Since the space between the waste bin 2 and the insulation box 7 is filled with insulation cotton 13, some of the insulation cotton, such as rock wool and glass fiber cotton, has loose surface material. When the vacuum pump 5 is evacuated through the connecting pipe 2 9, a small amount of rock wool or glass fiber cotton may be extracted from the surface, which may cause the vacuum pump 5 to malfunction. Therefore, a sleeve 14 is set up so that when air can enter the sleeve 14 through the vent hole 15 and be sucked away by the connecting pipe 2 9, the filter cotton 16 blocks the rock wool and glass fiber cotton to prevent the inhalation of a small amount of surface material.

[0038] In some embodiments, wind deflectors 20 are fixedly installed on the insulated box 7 at both the front and rear ends of the train. The wind deflectors 20 are arranged in an arc-shaped structure with the middle convex and the ends concave. The wind deflectors 20 are arranged in an inclined state with the bottom closer to the top of the insulated box 7 and away from the insulated box 7.

[0039] Waste bin 2 is generally installed under the train carriages. When the train is running, it is directly exposed to the airflow. Due to the rapid airflow, the temperature of the airflow environment is lower than that of the windless environment. If there is rain or snow in the train's running environment, some rain or snow will adhere to the surface of the insulation box 7. Combined with the low temperature, this will cause ice to form on the surface of the insulation box 7, placing the insulation box 7 in a very low temperature environment. The greater the temperature difference between the inside and outside of waste bin 2 and insulation box 7, the faster the heat transfer between the inside and outside will be. This will affect the anti-icing effect inside waste bin 2. Therefore, a wind deflector 20 is installed. The airflow blows directly onto the wind deflector 20, and rain or snow also freezes and adheres to the wind deflector 20, thereby greatly reducing the impact on the insulation box 7.

[0040] In some embodiments, multiple partitions 18 are fixedly installed inside the waste bin 2, and each partition 18 has a pre-set communication port 19 at its bottom.

[0041] When the train changes from stationary to moving, from moving to stationary, or brakes, the waste in the waste bin 2 will surge due to inertia. The more waste surges, the greater the impact force on the walls of the waste bin 2. The partition 18 can divide the space inside the waste bin 2 into multiple areas, and each area can be connected through the connecting port 19, thereby reducing the impact force of the waste in the waste bin 2 on the walls due to the inertia of the train and ensuring the structural integrity of the waste bin 2.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A compact, water-saving vacuum toilet, comprising a toilet bowl (1), a waste tank (2) installed below the toilet bowl (1), a drain pipe (17) installed on the waste tank (2) near its bottom, and the waste tank (2) and the toilet bowl (1) being connected by a drain pipe (3), characterized in that, An isolation valve (4) is installed on the drain pipe (3), a vacuum pump (5) is installed above the waste tank (2), a six-way connector (8) is fixedly connected to the input end of the vacuum pump (5), a connecting pipe (6) and four connecting pipes (9) are fixedly connected to the six-way connector (8), an insulation box (7) is fixedly installed on the outside of the waste tank (2), the bottom ends of the four connecting pipes (9) extend to the front, back, left and right sides of the waste tank (2) and the insulation box (7) respectively, the insulation box (7) and the waste tank (2) are sealed together, and the bottom end of the connecting pipe (6) passes through the insulation box (7) and extends into the waste tank (2).

2. The compact, water-saving vacuum toilet according to claim 1, characterized in that, Multiple support columns (10) are installed between the waste bin (2) and the insulation box (7). Metal sleeves (11) are installed at both ends of the support columns (10). The metal sleeves (11) at both ends of the support columns (10) are fixedly connected to the waste bin (2) and the insulation box (7) at the corresponding positions.

3. The compact, water-saving vacuum toilet according to claim 2, characterized in that, Both ends of the support column (10) are fitted with rubber sleeves (12), which are located inside the metal sleeve (11).

4. The compact, water-saving vacuum toilet according to claim 1, characterized in that, The space between the insulated box (7) and the waste bin (2) is filled with insulating cotton (13), which is any one or a combination of rock wool, glass fiber cotton, rubber and plastic insulating cotton, polyurethane foam cotton, polyester fiber insulating cotton and polyethylene insulating cotton.

5. The compact, water-saving vacuum toilet according to claim 4, characterized in that, A sleeve (14) is installed at the end of the connecting pipe (9) between the waste bin (2) and the insulation box (7). The sleeve (14) has dense ventilation holes (15). Filter cotton (16) is installed inside the sleeve (14) at the position corresponding to the ventilation holes (15). The bottom end of the connecting pipe (9) extends into the sleeve (14).

6. The compact, water-saving vacuum toilet according to claim 1, characterized in that, Wind deflectors (20) are fixedly installed on the insulated box (7) in the directions corresponding to the front and rear ends of the train.

7. The compact, water-saving vacuum toilet according to claim 6, characterized in that, The wind deflector (20) is an arc-shaped structure with a convex middle and concave ends. The wind deflector (20) is inclined with its bottom facing towards the heat preservation box (7) and its top facing away from the heat preservation box (7).

8. The compact, water-saving vacuum toilet according to claim 1, characterized in that, The waste bin (2) has multiple partitions (18) fixedly installed inside, and each partition (18) has a pre-set communication port (19) at the bottom.

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