Electric precipitator with waste heat recovery device

Abstract

The utility model discloses an electric dust collector with waste heat recovery device, electric dust collector with waste heat recovery device, including electric dust collector and hopper, the hopper is located at the bottom of electric dust collector, the spiral pipe for waste heat recovery is provided in the hopper, the hopper bottom is provided with the bottom plate, the spiral pipe is located the top of bottom plate, the utility model discloses the spiral pipe is set up in the top of hopper bottom plate, and the dust that accumulates in the hopper bottom is recovered to waste heat by spiral pipe, when the dust reaches a certain amount, the signal output to PLC controller through the sensor, and the vibration work of motor is started to the dust vibration on the spiral pipe of PLC controller, and the dust is discharged after the waste heat recovery to the bottom plate of electric push rod work opening of starting at the same time, improve the waste heat recovery efficiency of spiral pipe to the dust.

Description

Technical Field

[0001] This utility model relates to the field of electrostatic precipitator technology, and in particular to an electrostatic precipitator with a waste heat recovery device. Background Technology

[0002] Currently, the dust hopper is located at the bottom of the electrostatic precipitator, and dust is collected and stored through accessories such as vibrators and level gauges.

[0003] In the prior art, some electrostatic precipitators cannot recover heat before treating flue gas for dust removal, or the waste heat recovery cannot clean the dust adsorbed on the pipe wall. For example, in the published document CN203540704U, a waste heat recovery device is set inside the inlet head to recover the waste heat in the flue gas. However, since the dust in the flue gas in the electrostatic precipitator will be adsorbed on the pipe wall, the dust accumulation will increase the thermal resistance of the pipe wall and reduce the heat transfer efficiency.

[0004] Therefore, the applicant hereby submits this application. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing an electrostatic precipitator with a waste heat recovery device. The dust after waste heat recovery is discharged through the vibration of the spiral tube by the motor and the opening of the bottom plate by the push rod.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] An electrostatic precipitator with a waste heat recovery device includes an electrostatic precipitator and a dust hopper. The dust hopper is located at the bottom of the electrostatic precipitator. A swirling tube for waste heat recovery is installed inside the dust hopper. A bottom plate is provided at the bottom of the dust hopper, and the swirling tube is located above the bottom plate.

[0008] In the above scheme, preferably, through holes are provided on both sides of the ash hopper, and the two ends of the spiral tube are respectively located on the through holes.

[0009] In the above scheme, preferably, the diameter of the through hole is larger than the diameter of the spiral tube, a gap is left between the through hole and the end of the spiral tube, and an elastic flexible element is provided in the gap.

[0010] In the above scheme, preferably, a support plate is provided on one side of the ash hopper, a motor is provided on the support plate, and the output shaft of the motor is connected to the end of the rotating tube.

[0011] In the above scheme, preferably, the motor is a vibration motor.

[0012] In the above scheme, preferably, a plate is provided on the other side of the ash hopper, an extension plate is provided on one side of the bottom plate, and a push rod is provided between the plate and the extension plate.

[0013] In the above scheme, preferably, the push rod is an electric push rod.

[0014] In the above scheme, preferably, a sensor is provided on the ash hopper, with one end of the sensor located inside the ash hopper.

[0015] In the above scheme, preferably, a PLC controller is provided outside the electrostatic precipitator. The PLC controller is used to receive signals from the sensor and control the opening and closing of the motor and the push rod.

[0016] The beneficial effects of this utility model are as follows: This utility model uses a swirling tube installed above the bottom plate of the ash hopper. The swirling tube recovers waste heat from the dust accumulated at the bottom of the ash hopper. When the dust reaches a certain amount, a signal is output to the PLC controller through a sensor. The PLC controller starts the vibration of the motor to vibrate the dust adsorbed on the swirling tube. At the same time, it starts the electric push rod to open the bottom plate and discharge the dust after waste heat recovery, thereby improving the waste heat recovery efficiency of the swirling tube for dust. Attached Figure Description

[0017] Figure 1 This is a cross-sectional schematic diagram of the present invention.

[0018] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0019] Figure 3 This is a schematic diagram of the position and structure of the spiral tube in this utility model.

[0020] Figure 4 for Figure 3 Enlarged diagram of point B in the middle.

[0021] Figure 5 This is a schematic diagram of the through hole location structure in this utility model. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:

[0023] See Figure 1 Figure 5 An electrostatic precipitator with a waste heat recovery device includes an electrostatic precipitator 1 and a dust hopper 2. The dust hopper 2 is located at the bottom of the electrostatic precipitator 1 and is used to collect the dust separated during the dust removal process. Since the dust temperature is too high, waste heat recovery of the dust is required. A bottom plate 4 is provided at the bottom of the dust hopper 2, and a spiral tube 3 is provided on the dust hopper 2. The spiral tube 3 is used to recover waste heat from the dust accumulated at the bottom of the dust hopper 2. In this embodiment, the distribution of the spiral tube 3 is shown in the figure. Stainless steel finned tubes and spiral finned tubes are used, which have high corrosion resistance and high waste heat recovery efficiency.

[0024] Specifically, through holes 5 are provided on both sides of the ash hopper 2 for installing the swirling tube 3. The two ends of the swirling tube 3 are located on the through holes 5. Since dust may adhere to the swirling tube 3 and cannot be cleaned, a support plate 8 is provided on one side of the ash hopper 2. A motor 9 is installed on the support plate 8. In this embodiment, the motor 9 is a vibration motor. One end of the output shaft of the motor 9 is connected and fixed to one end of the swirling tube 3. The motor 9 drives the swirling tube 3 to achieve a vibration effect, which vibrates and removes the dust adsorbed on the swirling tube 3. Since the two ends of the swirling tube 3 are located on the through holes 5 on both sides of the ash hopper 2, the wall of the ash hopper 2 will be damaged during vibration. Therefore, the diameter of the through holes 5 is larger than the diameter of the swirling tube 3. The two ends of the swirling tube 3 are installed on the through holes 5, and a gap 6 is left between them. An elastic flexible element 7 is provided in the gap 6 to improve stability during vibration.

[0025] Furthermore, to discharge the dust after waste heat recovery, hinges are provided at the bottom of the base plate 4 and the bottom of the ash hopper 2 for rotating and opening the base plate 4. A plate 10 is provided on the other side of the ash hopper 2, and an extension plate 11 is provided on one side of the base plate 4. The plate 10 and the extension plate 11 are located on the same side. A push rod 12 is provided between the plate 10 and the extension plate 11. In this embodiment, the push rod 12 is an electric push rod. An electric push rod is an electric drive device that converts the rotary motion of the motor 9 into linear reciprocating motion, used to open or close the base plate 4.

[0026] A sensor 13 is installed on the ash hopper 2, with one end of the sensor 13 located inside the ash hopper 2. It is used to detect when the dust reaches a certain position and output a signal. A PLC controller can be installed outside the electrostatic precipitator 1. The PLC controller is used to receive the output signal of the sensor 13. In this embodiment, the operation of the motor 9 and the push rod 12 are controlled by the PLC controller. After receiving the signal from the sensor 13, the PLC controller can set a certain time. After the time is reached, the PLC controller controls the motor 9 and the push rod 12 to start working. The vibrating motor vibrates and drops the dust adsorbed on the swirling tube 3. The electric push rod is used to open the bottom plate 4 to discharge the dust after waste heat recovery. The swirling tube 3 can perform new waste heat recovery on the newly dropped dust, which improves the waste heat recovery efficiency of the swirling tube 3 for dust.

[0027] Working principle: As dust falls to the bottom of the ash hopper 2, it is placed above the base plate 4 through the swirling tube 3. When the dust in the ash hopper 2 is collected to a certain position, the sensor 13 sends a signal to the PLC sensor 13. The PLC sensor 13 controls the operation of the vibration motor and the electric actuator. The vibration motor drives the swirling tube 3 to vibrate and shake off the dust adsorbed on the swirling tube 3. The electric actuator drives the base plate 4 to open, so as to discharge the dust after the waste heat of the swirling tube 3 is recovered.

[0028] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An electrostatic precipitator with a waste heat recovery device, comprising an electrostatic precipitator (1) and a dust hopper (2), characterized in that: The ash hopper (2) is located at the bottom of the electrostatic precipitator (1). The ash hopper (2) is equipped with a swirling tube (3) for dust waste heat recovery. The bottom of the ash hopper (2) is equipped with a bottom plate (4). The swirling tube (3) is located above the bottom plate (4).

2. The electrostatic precipitator with waste heat recovery device according to claim 1, characterized in that: Both sides of the ash hopper (2) are provided with through holes (5), and both ends of the spiral tube (3) are located on the through holes (5).

3. The electrostatic precipitator with waste heat recovery device according to claim 2, characterized in that: The diameter of the through hole (5) is larger than the diameter of the spiral tube (3), and there is a gap (6) between the through hole (5) and the end of the spiral tube (3), and an elastic flexible element (7) is provided on the gap (6).

4. The electrostatic precipitator with waste heat recovery device according to claim 1, characterized in that: A support plate (8) is provided on one side of the ash hopper (2), and a motor (9) is provided on the support plate (8). The output shaft of the motor (9) is connected to the end of the spiral tube (3).

5. The electrostatic precipitator with waste heat recovery device according to claim 4, characterized in that: The motor (9) is a vibration motor.

6. The electrostatic precipitator with a waste heat recovery device according to claim 4 or 5, characterized in that: A plate (10) is provided on the other side of the ash hopper (2), an extension plate (11) is provided on one side of the bottom plate (4), and a push rod (12) is provided between the plate (10) and the extension plate (11).

7. The electrostatic precipitator with a waste heat recovery device according to claim 6, characterized in that: The push rod (12) is an electric push rod.

8. The electrostatic precipitator with a waste heat recovery device according to claim 6, characterized in that: A sensor (13) is provided on the ash hopper (2), with one end of the sensor (13) located inside the ash hopper (2).

9. The electrostatic precipitator with a waste heat recovery device according to claim 8, characterized in that: The electrostatic precipitator (1) is equipped with a PLC controller, which is used to receive signals from the sensor (13) and control the opening and closing of the motor (9) and the push rod (12).

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