Ballast bed spraying device capable of steplessly regulating and controlling water spraying amount

Abstract

The ballast bed spraying device comprises a water tank and two water outlet pipelines arranged at the bottom of a vehicle body side by side, a plurality of nozzles are arranged on each water outlet pipeline side by side, one end of each water outlet pipeline is open, the other end of each water outlet pipeline is closed, and the open end of each water outlet pipeline is communicated with the water tank through a connecting pipe. After the connecting pipe is connected out of the water tank, a water pump, an electromagnetic valve and a flow meter for detecting the water flow in the pipeline are sequentially arranged on the pipeline; the water pump is controlled by a motor; the controller is used for collecting signals of the flow meter and further controlling the rotating speed of the motor and on-off of the electromagnetic valve; one of the water pumps on the two connecting pipes is a small-displacement water pump, and the other water pump on the two connecting pipes is a large-displacement water pump. The two water pumps adopt a large displacement configuration and a small displacement configuration, so that not only can high-precision variable control in a small displacement range and a medium displacement range be met, but also high-precision variable control in a large displacement range during full displacement output of the two water pumps can be met.

Description

Technical Field

[0001] The utility model relates to a roadbed spraying device, in particular to a roadbed spraying device with a water spraying amount capable of being steplessly regulated. Background Art

[0002] During railway maintenance, many large equipment will raise a lot of dust during operation, which not only causes great damage to the local environment, but also poses a great hidden danger to the health and safety of operators and construction workers. Especially in tunnels, the air circulation is poor and the dust is too concentrated, which is more harmful to the health of operators. Therefore, it is necessary to sprinkle water in advance to moisten the roadbed. The roadbed sprinkler device can suppress and eliminate the dust to reduce the harm to the health of operators.

[0003] At present, conventional spraying control systems all use standard motors to drive quantitative water pumps to output a fixed amount of water to spray the roadbed. However, due to the different depths of the roadbed and the different ballast content of the ballast, the amount of water sprayed by the spraying device is also different. In order to achieve complete wetting of the roadbed and the speed of the vehicle, the amount of water sprayed by the spraying device is also quite different. In order to meet the different water requirements of the roadbed and meet the speed of the vehicle to save the spraying time in the blockade point and achieve the best spraying effect, a roadbed spraying control device with stepless control of the water spraying amount is designed. Summary of the invention

[0004] The purpose of the utility model is to overcome the deficiencies of the existing technology and provide a roadbed spraying device with stepless adjustable watering amount, which can meet the requirements of constant control of a small flow rate required for the roadbed when the vehicle is traveling at a low speed, and constant control of a large flow rate required for the roadbed when the vehicle is traveling at a high speed, and can also meet the requirements of follow-up control of the spraying amount according to the change of vehicle speed when the vehicle speed changes, so as to achieve a uniform watering amount for the roadbed.

[0005] The technical scheme of the utility model is: a roadbed spraying device with stepless controllable watering amount, comprising a water tank and two water outlet pipes arranged side by side at the bottom of the vehicle body, each of the water outlet pipes is provided with a plurality of nozzles side by side, one end of the water outlet pipe is open and the other end is closed, the open end of the water outlet pipe is connected with the water tank through a connecting pipe, after the connecting pipe is connected from the water tank, a water pump, a solenoid valve and a flow meter for detecting the water flow in the pipe are sequentially arranged on the pipe;

[0006] The water pump is controlled by a motor;

[0007] It also includes a controller for collecting flow meter signals and controlling the motor speed and the on / off of the solenoid valve.

[0008] A ball valve and a filter are provided on the connecting pipe between the water pump and the water tank.

[0009] Two water outlet pipes are installed in parallel on the left and right sides of the water tank.

[0010] One of the water pumps on the two connecting pipes is a small-displacement water pump, and the other is a large-displacement water pump.

[0011] The motor used to control the water pump is an AC variable frequency motor.

[0012] The nozzle is a conical nozzle with an extra-large diameter and anti-clogging properties.

[0013] The utility model uses a flow meter to monitor the flow in the pipeline to feedback the output water volume of the water pump, and changes the speed of the motor through the controller, thereby adjusting the output water volume of the water pump to achieve constant control of the water output of the water pump. The two water pumps are configured with a large and a small displacement, which can not only meet the high-precision variable control within the small and medium displacement ranges, but also meet the high-precision variable control within the large displacement range when the two water pumps are fully output. The controller can control the speed of a variable frequency motor alone, and can also control the speeds of two variable frequency motors at the same time, meeting the control requirements according to the actual working conditions.

[0014] A motor is used to drive the water pump, and a pipeline is used to connect the water pump and the water tank. Water is pumped out from the water tank and output through the water pump. The water pump itself has a self-priming function and is not affected by the water level in the water tank. It can effectively and maximize the use of the stored water in the water tank.

[0015] When the water pump outputs, the fluid has a lift, which can make the liquid in the pipeline have a lower pressure, and the lower pressure can make the fluid achieve a good spraying effect when passing through the nozzle.

[0016] The nozzle adopts an extra-large diameter anti-clogging conical nozzle, and the internal channels are streamlined, allowing the liquid to pass more smoothly without dead corners or blockages, and can be effectively sprayed at low pressure.

[0017] The nozzle spray effect is a solid cone, and a multiple nozzle design is adopted. The spraying range of the nozzle is fixed, which can make the roadbed spray evenly without dead corners.

[0018] The electromagnetic switch ball valve can provide effective protection to prevent the water in the water tank from flowing onto the roadbed when the water pump is not working, thus avoiding waste.

[0019] The motor is a variable frequency adjustable speed motor with a wide speed regulation range and is easy to operate.

[0020] The beneficial effect of the utility model is that the utility model is composed of two sets of independent spraying devices, one set is a small-displacement spraying device, and the other set is a large-displacement spraying device, both of which have independent driving devices, and can work independently or simultaneously. The device is easy to control, simple in structure, and good in practicality, and can meet the requirements of high-precision variable control within a small-displacement range, and can also meet the requirements of high-precision variable control within a large-displacement range when two water pumps are fully discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the principle of the utility model;

[0022] Figure 2 This is a schematic diagram of the installation of the utility model;

[0023] Figure 3 It is a schematic diagram of the installation of the utility model nozzle;

[0024] In the figure: 1, water tank, 2.1, first manual switch ball valve, 2.2, second manual switch ball valve, 3.1, first filter, 3.2, second filter, 4.1, first water pump, 4.2, second water pump, 5.1, first motor, 5.2, second motor, 6.1, first electromagnetic switch ball valve, 6.2, second electromagnetic switch ball valve, 7.1, first flow meter, 7.2, second flow meter, 8.1, first nozzle, 8.2, second nozzle, 9, control cabinet, a, first water outlet pipeline, b, second water outlet pipeline, c, first water suction pipeline, d, second water suction pipeline. DETAILED DESCRIPTION

[0025] The embodiments of the present invention are described in detail below. The embodiments are shown in the accompanying drawings, wherein the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions.

[0026] In the description of the present invention, it should be noted that directional words, such as the terms "center", "lateral (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. Therefore, the definition of "first" and "second" features can explicitly or implicitly include one or more of the features. In the description of the utility model, "several", "several" and "respectively" mean two or more, unless otherwise clearly and specifically defined.

[0028] The following is a summary of the instructions Figure 1-3By further describing the specific implementation of the utility model, the technical solution and its beneficial effects of the utility model are made clearer and more explicit. The following description of the embodiments with reference to the accompanying drawings is exemplary and intended to explain the utility model, but cannot be understood as limiting the present application.

[0029] See also Figure 1-3 The water tank 1 is arranged on a flatbed truck, and water outlet pipes a and b are arranged side by side at the front and rear ends under the truck body. A plurality of conical nozzles 8.1 are arranged side by side at the lower end of the water outlet pipe a, and a plurality of conical nozzles 8.2 are arranged side by side at the lower end of the water outlet pipe b. The plurality of nozzles are evenly distributed, and the spraying range of the nozzles covers the entire roadbed. The water outlet pipeline a is connected with the water tank 1 through the connecting pipe c. After the connecting pipe c is connected from the bottom of the water tank 1, a first manual switch ball valve 2.1, a first filter 3.1, a first water pump 4.1, a first flow meter 7.1, and a first solenoid valve 6.1 are provided in sequence. The first water pump 4.1 is a small-displacement water pump, and the first water pump 4.1 is driven by a first motor 5.1. The water outlet pipeline b is connected with the water tank 1 through the connecting pipe d. After the connecting pipe d is connected from the bottom of the water tank 1, a second manual switch ball valve 2.2, a second filter 3.2, a second water pump 4.2, a second flow meter 7.2, and a second solenoid valve 6.2 are provided in sequence. The second water pump 4.2 is a large-displacement water pump, and the second water pump 4.2 is driven by a second motor 5.2. Both the first motor 5.1 and the second motor 5.2 are AC variable frequency motors, and the speed range is adjustable and the adjustment range is wide.

[0030] When the water pump is working normally, the manual switch ball valve is always in the open state to ensure the smooth water absorption. When the sprinkler does not work for a long time or the water pump, flow meter and other components fail, the manual switch ball valve is closed to cut off the water flow of the water tank and facilitate the replacement of components. The filter is installed near the water suction port of the water pump to filter impurities entering the water pump, which is convenient for protecting the water pump. The first motor drives the first water pump, and the second motor drives the second water pump, which can work separately or simultaneously.

[0031] The first flow meter and the second flow meter are electrically connected to the controller, and the controller receives the feedback signal of the flow rate, thereby controlling the motor speed and the on-off of the solenoid valve. The controller is a plc, and receiving the flow meter signal through the plc to control the solenoid valve and the motor speed is a prior art, which will not be repeated in this embodiment.

[0032] The description of the implementation mode does not limit the technical solution of the present utility model thereto, and any equivalent changes or appearance modifications made according to the spirit of the present utility model should fall within the protection scope of the present utility model.

Claims

1. A roadbed spraying device with stepless controllable watering amount, characterized in that: It comprises a water tank (1) and two water outlet pipes arranged side by side at the bottom of a vehicle body, each of the water outlet pipes being provided with a plurality of nozzles arranged side by side, one end of the water outlet pipe being open and the other end being closed, the open end of the water outlet pipe being connected to the water tank (1) via a connecting pipe, after the connecting pipe is connected from the water tank (1), a water pump, a solenoid valve and a flow meter for detecting the water flow in the pipe are sequentially arranged on the pipe; The water pump is controlled by a motor; It also includes a controller for collecting flow meter signals and controlling the motor speed and the on / off of the solenoid valve; One of the water pumps on the two connecting pipes is a small-displacement water pump, and the other is a large-displacement water pump.

2. The roadbed spraying device with stepless controllable watering amount according to claim 1 is characterized in that: A ball valve and a filter are provided on the connecting pipe between the water pump and the water tank (1).

3. A roadbed spraying device with stepless controllable watering amount according to claim 1 or 2, characterized in that: Two water outlet pipes are installed in parallel on the left and right sides of the water tank (1).

4. The roadbed spraying device with steplessly adjustable watering amount according to claim 1 is characterized in that: The motor used to control the water pump is an AC variable frequency motor.

5. The roadbed spraying device with steplessly adjustable watering amount according to claim 1 is characterized in that: The nozzle is a conical nozzle with an extra-large diameter and anti-clogging properties.

Images