Automatic vacuum blow-down valve and blow-down device for high-speed rail

Abstract

The utility model discloses an automatic vacuum blow-down valve and a blow-down device for a high-speed rail. The vacuum blow-down valve comprises a valve body and a valve rod, the valve body is provided with a sewage suction port and a sewage discharge port; a sealing partition plate is arranged in an inner cavity of the valve body and divides the inner cavity of the valve body into a sewage discharging cavity and a working cavity. The two ends of the valve rod are connected with a valve plate and a piston which are arranged at the two ends of the valve rod respectively. The valve plate abuts against the inner wall of the valve body and is used for communicating or separating the sewage suction opening and the sewage outlet. The piston is arranged in the working cavity, the piston moves in the working cavity and divides the working cavity into a breathing cavity and a negative pressure cavity, the breathing cavity is communicated with the external atmosphere, and the negative pressure cavity is communicated with the drain outlet; an elastic piece is arranged in the negative pressure cavity, and the two ends of the elastic piece are connected with the piston and the inner wall of the negative pressure cavity respectively. The vacuum blow-down valve and the blow-down device are convenient to operate and high in blow-down efficiency.

Description

Technical Field

[0001] This utility model relates to the field of sewage valve technology, and more specifically to an automatic vacuum sewage valve and sewage discharge device for high-speed rail. Background Technology

[0002] During high-speed train operation, passenger waste needs to be collected and treated through an effective sewage system. Currently, most high-speed trains use vacuum toilet systems, which work by using positive and negative pressure differences to draw waste into a sludge tank. While this system improves sewage efficiency to some extent, there are still many problems in the sewage disposal process after the train arrives at the station.

[0003] The current sewage discharge process on high-speed railways requires a dedicated person to manually connect the sewage pipe to the sewage tank, then sequentially open the sewage valve and start the vacuum pump to suck the waste from the sewage tank into the station's sewage pumping station. This process requires manual operation step by step, which is not only labor-intensive and time-consuming, but also involves a harsh operating environment, causing great inconvenience to the staff.

[0004] Therefore, developing an automatic vacuum sewage discharge valve and sewage discharge device for high-speed rail that is easy to operate and highly efficient is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the present invention provides an automatic vacuum sewage discharge valve and sewage discharge device for high-speed rail that is easy to operate and highly efficient.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Automatic vacuum drain valves for high-speed rail include:

[0008] The valve body has a suction port and a discharge port; a sealing partition is provided in the inner cavity of the valve body, which divides the inner cavity of the valve body into a discharge chamber and a working chamber;

[0009] A valve stem has valve plates and pistons connected to its two ends, with the valve plates and pistons respectively disposed at the two ends of the valve stem. The valve plates abut against the inner wall of the valve body and are used to connect or disconnect the suction port and the discharge port. The piston is placed in the working chamber and moves within the working chamber, dividing the working chamber into a breathing chamber and a negative pressure chamber. The breathing chamber is connected to the external atmosphere, and the negative pressure chamber is connected to the discharge port. An elastic element is disposed within the negative pressure chamber, with its two ends connected to the piston and the inner wall of the negative pressure chamber, respectively.

[0010] The beneficial effect of adopting the above technical solution is that by using negative pressure to move the piston and resetting it through the elastic element, the vacuum drain valve can be automatically started and stopped.

[0011] Preferably, the valve body is provided with a valve seat, and the valve plate abuts against the valve seat. The tight fit between the valve seat and the valve plate ensures the valve's sealing performance and prevents sewage leakage.

[0012] Preferably, the breathing chamber has air holes on its side wall. These air holes allow the breathing chamber to communicate with the external atmosphere, ensuring that the pressure inside the breathing chamber is equal to atmospheric pressure. This provides a stable external pressure environment for the normal movement of the piston, enabling the piston to smoothly generate an upward pulling force under negative pressure, thus pushing the valve plate to open the valve.

[0013] Preferably, an air pipe is connected between the negative pressure chamber and the drain outlet.

[0014] An automatic sewage discharge device for high-speed rail includes a vacuum sewage discharge valve, a sewage tank, a vacuum pump, an electric telescopic pipe, and a controller. The sewage tank, vacuum pump, and electric telescopic pipe are connected sequentially via a sewage discharge pipe. The vacuum sewage discharge valve is connected to the sewage discharge pipe between the sewage tank and the vacuum pump. The telescopic end of the electric telescopic pipe is connected to the sewage pipe. The controller is connected to the vacuum pump and the electric telescopic pipe and sends commands to them. The controller can automatically control the start and stop of the vacuum pump and the electric telescopic pipe based on the sewage tank level information detected by the level sensor, thereby achieving precise control of the sewage discharge process and ensuring that the sewage in the sewage tank can be discharged in a timely and effective manner.

[0015] Preferably, a level sensor is installed at the bottom of the wastewater tank, and the level sensor is connected to the controller. The level sensor can monitor the changes in the liquid level in the wastewater tank in real time and transmit the liquid level signal to the controller. The controller precisely controls the start and stop of the vacuum pump and the electric telescopic pipe based on the liquid level signal.

[0016] Preferably, the sewage discharge device further includes a fault feedback module. This module receives signals from the level sensor, vacuum pump, and electric telescopic pipe, and feeds these signals back to the controller. The fault feedback module can receive signals from components such as the level sensor, vacuum pump, and electric telescopic pipe, and analyze and process these signals to achieve real-time monitoring and fault diagnosis of the sewage discharge device's operating status. Once an abnormality is detected, the fault feedback module can promptly identify and display the fault location and feed the fault information back to the central control room, facilitating timely detection and handling of the fault by staff.

[0017] Preferably, the controller is located in the central control room. This location allows staff to centrally manage and monitor the entire sewage system's operation, promptly obtaining information such as the sewage tank level, the vacuum pump, and the electric telescopic hose's status. This enables remote control and management of the sewage discharge process, improving work efficiency and management level.

[0018] As can be seen from the above technical solution, compared with the prior art, this utility model discloses an automatic vacuum sewage discharge valve and sewage discharge device for high-speed rail, the beneficial effects of which are:

[0019] (1) Through the coordinated work of electric telescopic pipe, vacuum pump, liquid level sensor and fault feedback module, the entire sewage discharge process is fully automated. After the train arrives at the station, the main control room only needs to send a start signal, and the electric telescopic pipe will automatically extend into the sewage pipe of the station, triggering the vacuum pump to start. The vacuum sewage discharge valve will automatically open under negative pressure to discharge sewage. After the sewage is discharged, the liquid level sensor will trigger the vacuum pump and electric telescopic pipe to close. No manual intervention is required, which greatly reduces the workload of manual operation, reduces labor intensity and improves the working environment.

[0020] (2) The vacuum drain valve automatically opens and closes by the negative pressure generated by the vacuum pump, without the need for additional electric or starter actuators. This simplifies the equipment structure, reduces equipment failure points, and improves the reliability and stability of the equipment, thereby ensuring the efficient operation of the drain process. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of the vacuum drain valve provided by this utility model;

[0023] Figure 2 A schematic diagram of the sewage discharge device provided by this utility model.

[0024] In the figure,

[0025] 1-Valve body;

[0026] 11-Suction port; 12-Discharge port; 13-Breathing chamber; 14-Negative pressure chamber; 15-Valve seat; 16-Air vent;

[0027] 2-Valve stem; 3-Valve plate; 4-Piston; 5-Sealing partition; 6-Elastic element; 7-Gas pipe; 8-Sewage tank; 9-Vacuum pump; 10-Electric telescopic pipe; 011-Sewage pipe; 012-Sewage pipeline; 013-Liquid level sensor; 014-Fault feedback module; 015-Controller; 016-Vacuum drain valve. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1:

[0030] like Figure 1 As shown, this utility model embodiment discloses an automatic vacuum drain valve for high-speed rail, comprising:

[0031] Valve body 1, which has a suction port 11 and a discharge port 12; a sealing partition 5 is provided in the inner cavity of valve body 1, which divides the inner cavity of valve body 1 into a discharge chamber and a working chamber.

[0032] A valve stem 2 has a valve plate 3 and a piston 4 connected to both ends. The valve plate 3 and piston 4 are respectively located at both ends of the valve stem 2. The valve plate 3 abuts against the inner wall of the valve body 1 and is used to connect or disconnect the suction port 11 and the discharge port 12. The piston 4 is placed in the working chamber and moves within the working chamber, dividing the working chamber into a breathing chamber 13 and a negative pressure chamber 14. The breathing chamber 13 is connected to the external atmosphere, and the negative pressure chamber 14 is connected to the discharge port 12. An elastic element 6 is provided in the negative pressure chamber 14, and the two ends of the elastic element 6 are connected to the piston 4 and the inner wall of the negative pressure chamber 14, respectively. The elastic element 6 can be a spring.

[0033] To further optimize the above technical solution, the automatic start-up of the vacuum drain valve is achieved by utilizing the difference in cross-sectional area between piston 4 and valve stem 2; for example... Figure 1 As shown, the cross-sectional area S2 of piston 4 is much larger than the cross-sectional area S1 of valve stem 2. When the pressure at the drain port 12 of valve body 1 decreases, the pressure in the breathing chamber > the pressure in the negative pressure chamber = the pressure in the valve body cavity, i.e., P 呼 >P 负 =P 内 And S2 > S1, then F2 > F1, (F2 = (P 呼 -P 负 )*S2, F1=(P 呼 -P 内(S1) means that the force of atmospheric pressure pushing piston 4 is greater than the force pushing valve stem 2. Therefore, the component moves towards negative pressure chamber 14, and the valve opens. Simultaneously, the pushing force must be greater than the spring force, i.e., F2 - F1 > F. 弹簧 This is determined by the area difference S1 and S2. Expressed by the formula:

[0034] After the vacuum pump starts: ((P) 呼 >P 内 =P 负 )

[0035] The force that drives the valve stem due to the pressure within the breathing chamber: F1 = (P 呼 -P 内 )×S1

[0036] The force that drives the piston movement due to the pressure within the respiratory cavity: F2 = (P 呼 -P 负 )×S2

[0037] The force that drives the piston to move due to the spring force: F 弹

[0038] Then we have: F1 - F2 > F 弹 At that time, that is: (P 呼 -P 内 )×(S2-S1)>F 弹簧

[0039] The valve is opened.

[0040] After the vacuum pump is turned off: (P 呼 =P 内 =P 负 )

[0041] Then we have: F1 = F2 = 0 < F 弹 At this point, the valve closes under the action of the spring.

[0042] To further optimize the above technical solution, the valve body 1 is provided with a valve seat 15, and the valve plate 3 abuts against the valve seat 15.

[0043] To further optimize the above technical solution, an air hole 16 is provided on the side wall of the breathing chamber 13.

[0044] To further optimize the above technical solution, an air pipe 7 is connected between the negative pressure chamber 14 and the drain outlet 12.

[0045] Working principle of vacuum drain valve:

[0046] When the system is under normal pressure, the spring is in its natural state, the valve plate 3 and the valve seat 15 are tightly fitted, and the valve is closed; when the vacuum pump 9 at the drain port 12 is turned on, the vacuum pump 9 provides a vacuum negative pressure, the piston 4 compresses the spring, the valve plate 3 and the valve seat 15 separate, and the valve opens automatically.

[0047] Example 2:

[0048] The automatic sewage discharge device for high-speed rail includes a vacuum sewage discharge valve 016, and also includes a sewage tank 8, a vacuum pump 9, an electric telescopic pipe 10, and a controller 015. The sewage tank 8, vacuum pump 9, and electric telescopic pipe 10 are connected in sequence through a sewage discharge pipe 011. The vacuum sewage discharge valve 016 is connected to the sewage discharge pipe 011 between the sewage tank 8 and the vacuum pump 9. The telescopic end of the electric telescopic pipe 10 is connected to the sewage pipe 012. The controller 015 is connected to the vacuum pump 9 and the electric telescopic pipe 10, and sends commands to the vacuum pump 9 and the electric telescopic pipe 10.

[0049] To further optimize the above technical solution, a liquid level sensor 013 is installed at the bottom of the sewage tank 8, and the liquid level sensor 013 is connected to the controller 015.

[0050] To further optimize the above technical solution, the sewage discharge device also includes a fault feedback module 014, which receives signals from the liquid level sensor 013, the vacuum pump 9, and the electric telescopic pipe 10, and feeds the signals back to the controller 015.

[0051] To further optimize the above technical solution, a displacement feedback module is installed at the electric telescopic pipe 10. The displacement feedback module transmits the moving distance of the electric telescopic pipe 10 to the controller 015. The electric telescopic pipe 10 is installed on the train body, facilitating connection with the sewage pipe 012 of the station via telescopic movement.

[0052] To further optimize the above technical solution, controller 015 is installed in the driver's main control room.

[0053] Working principle of the sewage discharge device:

[0054] After the train arrives at the station and stops at the designated location, the controller 015 in the driver's control room sends a start signal. Upon receiving the signal, the electric telescopic tube 10 automatically extends and inserts into the station's sewage pipe 012. After the electric telescopic tube 10 extends to its full position, its displacement feedback module sends a signal to the controller 015. The controller 015 then controls the vacuum pump 9 to start. After the vacuum pump 9 starts, a negative pressure is generated between the sewage tank 8 and the vacuum drain valve. Under the action of the negative pressure, the vacuum drain valve 016 automatically opens, and the sewage in the sewage tank 8 is discharged into the station's sewage pipe 012 through the drain pipe 011. The liquid level in the sewage tank 8 drops, and the liquid level sensor 013 detects the change in liquid level. When the sewage is emptied, the liquid level sensor 013 sends a signal to the controller 015, which then controls the vacuum pump 9 to shut down. After the vacuum pump 9 shuts down, the vacuum drain valve 016 automatically closes under the action of the spring, restoring the sealed state. Upon receiving the signal, the electric telescopic tube 10 automatically retracts and returns to its initial position.

[0055] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0056] 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. An automatic vacuum drain valve for high-speed rail, characterized in that, include: The valve body has a suction port and a discharge port; a sealing partition is provided in the inner cavity of the valve body, which divides the inner cavity of the valve body into a discharge chamber and a working chamber; A valve stem has valve plates and pistons connected to its two ends, with the valve plates and pistons respectively disposed at the two ends of the valve stem. The valve plates abut against the inner wall of the valve body and are used to connect or disconnect the suction port and the discharge port. The piston is placed in the working chamber and moves within the working chamber, dividing the working chamber into a breathing chamber and a negative pressure chamber. The breathing chamber is connected to the external atmosphere, and the negative pressure chamber is connected to the discharge port. An elastic element is disposed within the negative pressure chamber, with its two ends connected to the piston and the inner wall of the negative pressure chamber, respectively.

2. The automatic vacuum drain valve for high-speed rail according to claim 1, characterized in that, The valve body is provided with a valve seat, and the valve plate abuts against the valve seat.

3. The automatic vacuum drain valve for high-speed rail according to claim 2, characterized in that, Air holes are provided on the side wall of the breathing chamber.

4. The automatic vacuum drain valve for high-speed rail according to claim 1, characterized in that, An air pipe connects the negative pressure chamber to the sewage outlet.

5. An automatic sewage discharge device for high-speed rail, characterized in that, The vacuum drain valve according to any one of claims 1-4 further includes: a sewage tank, a vacuum pump, an electric telescopic tube, and a controller; the sewage tank, vacuum pump, and electric telescopic tube are connected in sequence through a drain pipe; the vacuum drain valve is connected to the drain pipe between the sewage tank and the vacuum pump; the telescopic end of the electric telescopic tube is connected to the sewage pipe; the controller is connected to the vacuum pump and the electric telescopic tube, and sends commands to the vacuum pump and the electric telescopic tube.

6. The automatic sewage discharge device for high-speed rail according to claim 5, characterized in that, A liquid level sensor is installed at the bottom of the sewage tank, and the liquid level sensor is connected to the controller.

7. The automatic sewage discharge device for high-speed rail according to claim 6, characterized in that, The sewage discharge device also includes a fault feedback module, which receives signals from the liquid level sensor, vacuum pump, and electric telescopic pipe, and feeds the signals back to the controller.

8. The automatic sewage discharge device for high-speed rail according to claim 5, characterized in that, The controller is located in the driver's control room.

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