Fire coal quantitative conveying equipment for coal-fired power plant

Abstract

The utility model discloses fire coal quantitative conveying equipment for a coal-fired power plant, and belongs to the technical field of fire coal conveying devices. The fire coal quantitative conveying equipment for the coal-fired power plant comprises a quantitative box and a conveying belt, a conveying pipe is fixedly connected to the quantitative box, the discharging end of the conveying pipe is located over the conveying belt, and the fire coal quantitative conveying equipment further comprises a baffle movably connected to the conveying pipe; the first driving cylinder is fixedly connected to the side wall of the quantitative box; the sliding cavity is formed in the first driving cylinder; the first sliding plug is slidably connected into the sliding cavity; according to the coal conveying device, coal materials impact the driving plate when input, then gas is input into the pressure storage cavity, the weight of input coal is judged through the gas input into the pressure storage cavity, then the pressure release valve can be conveniently and rapidly opened, the baffle is rapidly pulled out, and the coal materials on the baffle are rapidly discharged to the conveying belt; and through the quantitative box in the device, manual weighing is not needed for quantitative coal conveying, and the conveying efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of coal conveying devices, and in particular to a quantitative coal conveying device for coal-fired power plants. Background Technology

[0002] Coal-fired power plants convert the chemical energy of fuel into thermal energy. Steam pressure drives the turbine to rotate, and the turbine then drives the generator to rotate, converting mechanical energy into electrical energy. In current technology, a coal-fired furnace can burn about 100-105 kg of coal per hour. Therefore, before adding coal to the furnace, it is generally necessary to weigh the coal to facilitate subsequent cost accounting.

[0003] In existing power plants, coal is typically weighed manually before being transported. However, this method is time-consuming and may result in low transport efficiency. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art and to propose a coal quantitative conveying device for coal-fired power plants.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A coal metering conveying device for a coal-fired power plant includes a metering bin and a conveyor belt. A conveying pipe is fixedly connected to the metering bin, and the discharge end of the conveying pipe is located directly above the conveyor belt. The device also includes:

[0007] A baffle is movably connected to the conveying pipe;

[0008] The first drive cylinder is fixedly connected to the side wall of the metering box;

[0009] The sliding cavity is formed in the first drive cylinder;

[0010] The first sliding plug is slidably connected in the sliding cavity;

[0011] A first drive rod is fixedly connected to a first slide block, and the end of the first drive rod away from the first slide block is fixedly connected to the baffle.

[0012] Preferably, the first drive cylinder has a pressure accumulator chamber, and a connecting pipe is fixedly connected to the first drive cylinder. The pressure accumulator chamber is connected to the sliding cavity through the connecting pipe.

[0013] Furthermore, a second drive cylinder is fixedly connected to the metering box, a second slide plug is slidably connected to the second drive cylinder, and a gas supply pipe is fixedly connected to the side wall of the second drive cylinder, the gas supply pipe being connected to the accumulator chamber.

[0014] Furthermore, a rotating shaft is rotatably connected to the conveying pipe, and a drive plate and a push plate are fixedly connected to the side wall of the rotating shaft. A second drive rod is fixedly connected to the second slide plug, and the push plate abuts against the second drive rod.

[0015] Preferably, a limit rod is fixedly connected to the baffle.

[0016] Furthermore, a tension spring is fixedly connected to the first slide.

[0017] Furthermore, a first spring is fitted onto the second drive rod.

[0018] Furthermore, a second spring is fixedly connected to the drive plate, and the end of the second spring away from the drive plate is fixedly connected to the inner wall of the delivery pipe.

[0019] Compared with the prior art, this utility model provides a coal quantitative conveying device for coal-fired power plants, which has the following beneficial effects:

[0020] The parts of this device not described herein are the same as or can be implemented using existing technologies. This utility model utilizes the impact of coal material input on the drive plate to input gas into the accumulator chamber. By using the gas input into the accumulator chamber to determine the weight of the input coal, it is easy to quickly open the pressure relief valve, thereby quickly pulling out the baffle and quickly discharging the coal material on the baffle onto the conveyor belt. Through the quantitative box in this device, manual weighing of coal is no longer required for quantitative conveying, thus improving conveying efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a coal quantitative conveying device for a coal-fired power plant proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the metering box in a coal metering conveying device for a coal-fired power plant proposed in this utility model;

[0023] Figure 3 This is a cross-sectional view of the metering box in a coal metering conveying device for a coal-fired power plant proposed in this utility model;

[0024] Figure 4 This utility model proposes a coal quantitative conveying device for coal-fired power plants. Figure 3 Enlarged view of part A in the image;

[0025] Figure 5 This utility model proposes a coal quantitative conveying device for coal-fired power plants. Figure 3 Enlarged view of part B in the image.

[0026] In the diagram: 1. Metering box; 101. Feeding pipe; 102. Conveying pipe; 2. Conveyor belt; 3. Air supply pipe; 4. Second drive cylinder; 401. Second sliding plug; 4011. Second drive rod; 4012. First spring; 402. Air supply pipe; 5. Drive plate; 501. Second spring; 6. Rotating shaft; 601. Push plate; 7. Baffle; 701. Limiting rod; 702. First drive rod; 8. First drive cylinder; 801. Sliding cavity; 8011. Pressure relief pipe; 8012. Tension spring; 8013. First sliding plug; 802. Accumulation chamber; 803. Connecting pipe. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Example:

[0029] Reference Figures 1-5 A coal metering conveying device for a coal-fired power plant includes a metering box 1 and a conveyor belt 2. A conveying pipe 102 is fixedly connected to the metering box 1, and a feeding pipe 101 is fixedly connected to the top of the conveying pipe 102. The discharge end of the conveying pipe 102 is located directly above the conveyor belt 2. The device also includes:

[0030] Baffle 7 is movably connected to conveying pipe 102;

[0031] The first drive cylinder 8 is fixedly connected to the side wall of the metering box 1;

[0032] The sliding cavity 801 is formed in the first drive cylinder 8;

[0033] The first sliding plug 8013 is slidably connected in the sliding cavity 801;

[0034] The first drive rod 702 is fixedly connected to the first slide plug 8013, and the end of the first drive rod 702 away from the first slide plug 8013 is fixedly connected to the baffle 7.

[0035] The first drive cylinder 8 has a pressure accumulator 802, and a connecting pipe 803 is also fixedly connected to the first drive cylinder 8. The pressure accumulator 802 is connected to the sliding cavity 801 through the connecting pipe 803.

[0036] Reference Figure 5 The second drive cylinder 4 is fixedly connected to a pressure relief pipe 8011, and the pressure relief pipe 8011 is equipped with a commercially available electromagnetic pressure relief valve.

[0037] It should be noted that the connecting pipe 803 is equipped with a control valve that is available for purchase on the market.

[0038] A second drive cylinder 4 is fixedly connected to the metering box 1. A second slide plug 401 is slidably connected to the second drive cylinder 4. A gas supply pipe 3 is fixedly connected to the side wall of the second drive cylinder 4. The gas supply pipe 3 is connected to the accumulator chamber 802.

[0039] Reference Figure 4 An air supply pipe 402 is fixedly connected to the side wall of the second drive cylinder 4, and a one-way valve is provided on both the air supply pipe 402 and the air delivery pipe 3.

[0040] A rotating shaft 6 is rotatably connected to the conveying pipe 102. A drive plate 5 and a push plate 601 are fixedly connected to the side wall of the rotating shaft 6. A second drive rod 4011 is fixedly connected to the second slide plug 401. The push plate 601 abuts against the second drive rod 4011.

[0041] A limit rod 701 is fixedly connected to the baffle 7.

[0042] Reference Figure 3 , Figure 4 By using the limiting rod 701 set on the baffle 7, the baffle 7 can be prevented from falling off the conveying pipe 102 due to excessive sliding when it is quickly pulled out.

[0043] A tension spring 8012 is fixedly connected to the first slider 8013.

[0044] Reference Figure 5 The first slide 8013 can be quickly reset by means of the tension spring 8012 provided on the first slide 8013.

[0045] The first spring 4012 is sleeved on the second drive rod 4011.

[0046] One end of the first spring 4012 is fixedly connected to the bottom wall of the second drive cylinder 4, and the other end of the first spring 4012 is fixedly connected to the bottom end of the second drive rod 4011.

[0047] Reference Figure 4 The first spring 4012 enables the second slider 401 to be quickly reset.

[0048] A second spring 501 is fixedly connected to the drive plate 5, and the end of the second spring 501 away from the drive plate 5 is fixedly connected to the inner wall of the conveying pipe 102.

[0049] Reference Figures 1-5 In use, coal material is fed into conveying pipe 102 through feeding pipe 101. The fed coal material will fall and hit drive plate 5, which will drive push plate 601 to rotate. The rotation of push plate 601 will push second drive rod 4011 to move upward. The upward movement of second drive rod 4011 will push second slide plug 401 to slide upward, thereby pushing gas in second drive cylinder 4 into accumulator 802 through gas delivery pipe 3.

[0050] Reference Figure 3 The falling coal material will remain on baffle 7;

[0051] After a certain amount of coal material is conveyed, the gas in the accumulator chamber 802 reaches the set pressure threshold. At this time, the pressure relief valve on the pressure relief pipe 8011 is opened, and the gas in the slide chamber 801 will be released quickly through the pressure relief pipe 8011. At this time, under the action of the tension spring 8012, the baffle 7 will be pulled out quickly, and the material on the baffle 7 will fall instantly and be sent to the conveyor belt 2 through the conveying pipe 102.

[0052] Reference Figures 3-5 After the coal material on the baffle 7 is quickly discharged, the control valve on the connecting pipe 803 is opened. At this time, the gas in the accumulator 802 will be blown into the sliding chamber 801 through the connecting pipe 803. The gas blown into the sliding chamber 801 will push the first sliding plug 8013 to slide, thereby pushing the baffle 7 to move, so that the coal blocks can be quantitatively conveyed for use next time.

[0053] It should be noted that when the gas in the accumulator chamber 802 reaches the set pressure threshold, the input of coal material will be stopped.

[0054] It should also be noted that both the control valve and the pressure relief valve can be manually controlled or electromagnetically controlled.

[0055] This invention utilizes the impact of coal material input on the drive plate 5 to input gas into the accumulator chamber 802. The weight of the input coal is determined by the gas in the accumulator chamber 802, which facilitates the quick opening of the pressure relief valve and the rapid pulling out of the baffle 7, allowing the coal material on the baffle 7 to be quickly discharged onto the conveyor belt 2. Through the quantitative box 1 in this device, manual weighing of coal is no longer required for quantitative conveying, thus improving conveying efficiency.

[0056] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A coal ration feeding device for coal-fired power plants, comprising a ration tank (1) and a conveying belt (2), a conveying pipe (102) is fixedly connected to the ration tank (1), and a discharge end of the conveying pipe (102) is located directly above the conveying belt (2), characterized in that, Also include: Baffle (7), movable connection in the conveying pipe (102); First drive cylinder (8), fixedly connected to the side wall of the quantitative tank (1); Slide cavity (801) is opened in the first drive cylinder (8); First sliding plug (8013) is slidably connected in the slide cavity (801); First drive rod (702), fixedly connected to the first sliding plug (8013), the first drive rod (702) is fixedly connected to the baffle (7) away from the first sliding plug (8013) one end; The first drive cylinder (8) is provided with an accumulator cavity (802), and the first drive cylinder (8) is further provided with a communication pipe (803), and the accumulator cavity (802) is communicated with the slide cavity (801) through the communication pipe (803); The quantitative tank (1) is fixedly connected with the second drive cylinder (4), the second drive cylinder (4) is slidably connected with the second sliding plug (401), the side wall of the second drive cylinder (4) is fixedly connected with the gas pipe (3), and the gas pipe (3) is communicated with the accumulator cavity (802); The conveying pipe (102) is rotatably connected with the rotating shaft (6), the rotating shaft (6) is fixedly connected with the driving plate (5) and the push plate (601) on the side wall, the second sliding plug (401) is fixedly connected with the second drive rod (4011), and the push plate (601) is abutted with the second drive rod (4011).

2. The coal-quantitative-feeding device for coal-fired power plants according to claim 1, characterized in that, The baffle (7) is fixedly connected with the limiting rod (701).

3. The coal-quantitative-feeding device for coal-fired power plants according to claim 2, characterized in that, The first sliding plug (8013) is fixedly connected with the tension spring (8012).

4. The coal-quantitative-feeding device for coal-fired power plants according to claim 1, characterized in that, The second drive rod (4011) is sleeved with the first spring (4012).

5. The coal-quantitative-feeding device for coal-fired power plants according to claim 1, characterized in that, The driving plate (5) is fixedly connected with the second spring (501), and one end of the second spring (501) away from the driving plate (5) is fixedly connected to the inner side wall of the conveying pipe (102).

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