Differential pressure balance material returning device of boiler

Abstract

The utility model relates to the technical field of boiler material returning devices, in particular to a boiler differential pressure balance material returning device which actively transports solid particles separated from waste gas through a discharging device, controls the solid particles to be sent back into a boiler and controls the material returning speed of the solid particles at the same time. Separated solid particles are stored through a storage structure, so that the practicability of the device is improved; comprising a discharging device and a storage structure, and the storage structure is installed on the discharging device.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of boiler return material device, in particular to a kind of boiler differential pressure balance return material device. BACKGROUND

[0002] The main function of the boiler return material device is to continuously transport the high-temperature solid material separated by the separator back to the dense phase zone of the furnace, ensuring that the internal furnace maintains a positive pressure state, avoiding the reverse flow of high-temperature flue gas into the separator, and ensuring the stable operation of the system. By adjusting the amount of returned ash, the return material device can also help control the bed temperature, thereby optimizing the combustion effect.

[0003] The existing technology with the application number CN201720920285.X relates to a boiler return material device, which includes a return material channel, a return material pipe, a return material cavity, a bellows, a return material air chamber, a ventilation hole, a connecting rod, a loosening air pipe, a air supply device, and an adjusting valve. It can ensure that the return material device can work continuously and improve work efficiency.

[0004] However, the above-mentioned device has insufficient storage capacity for solid materials in actual use. Since the internal air flow is used to drive the powder backflow into the boiler, it is easy to block. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides a kind of boiler differential pressure balance return material device, which actively transports solid particles separated from waste gas by discharge device, controls solid particles to return to boiler, controls solid particle return rate, stores separated solid particles by storage structure, and improves the practicability of the device.

[0006] The utility model relates to a kind of boiler differential pressure balance return material device;Including discharge device and storage structure, storage structure is installed on discharge device;By discharge device actively transports solid particles separated from waste gas, controls solid particles to return to boiler, controls solid particle return rate, stores separated solid particles by storage structure, improves the practicability of the device.

[0007] Preferably, the discharging device comprises a cyclone separator, an air outlet, an air inlet, a discharge hopper, a feeding pipe, a speed reducer and a screw, the top end surface of the cyclone separator is provided with the air outlet, the upper part of the side surface of the cyclone separator is provided with the air inlet, the bottom of the cyclone separator is provided with the discharge hopper, the output end of the discharge hopper is connected with the right part inside the feeding pipe, the end surface of the feeding pipe is installed with the speed reducer, the feeding pipe is installed with the screw, and the output end of the speed reducer is connected with the screw; the boiler waste gas is sent into the cyclone separator through the air inlet to form a gas vortex, the separated gas is discharged through the air outlet, and the solid particles fall into the feeding pipe through the discharge hopper; the power is transmitted to the screw to drive the screw to rotate by starting the speed reducer, so that the solid particles are pushed to the left part inside the feeding pipe, the conveying rate of the solid particles in the feeding pipe is controlled by controlling the power of the speed reducer, and the control of the return rate is completed, and the practicability of the device is improved.

[0008] Preferably, the storage structure comprises a semicircular arc protrusion, a high-temperature-resistant valve and small spiral blades, the lower part inside the feeding pipe is provided with the semicircular arc protrusion, the semicircular arc protrusion extends from the middle part inside the feeding pipe to the front part inside the feeding pipe, the front end surface of the feeding pipe is provided with the high-temperature-resistant valve, and the front part of the screw is provided with the small spiral blades; the effective storage space of the front part inside the feeding pipe is reduced through the semicircular arc protrusion, the materials are pushed to the upper side of the left part inside the feeding pipe for storage through the small spiral blades of the front part of the screw, and the particle storage in the left part inside the feeding pipe is controlled by opening and closing the high-temperature-resistant valve, and the practicability of the device is improved.

[0009] Preferably, the device further comprises a heat preservation layer, a heat exchange pipe and a quick connector, the left part of the feeding pipe is sleeved with the heat preservation layer, the heat preservation layer is wound with the heat exchange pipe, a plurality of groups of quick connectors are installed on the side surface of the heat preservation layer, and the quick connectors are connected with the ports of the heat exchange pipe; the left part of the feeding pipe is heat preserved through the heat preservation layer, the temperature change of the materials in the feeding pipe is reduced, the heat exchange pipe is used to pass in heat dissipation liquid, so that the materials in the feeding pipe are assisted to be cooled, the return temperature is adjusted, the connection of the external pipeline is facilitated for the operator through the quick connector, and the practicability of the device is improved.

[0010] Preferably, the device further comprises a sealing chamber and a temperature sensor, a group of sealing chambers are arranged in the semicircular arc protrusion, and the temperature sensor is installed on the top of the sealing chamber; the temperature of the materials in the left part of the feeding pipe is monitored through the temperature sensor, the operator can know the return temperature, and the practicability of the device is improved.

[0011] Preferably, the device further comprises a heat insulation plate, and the right part inside the feeding pipe is provided with the heat insulation plate; the heat insulation plate arranged in the right part inside the feeding pipe reduces the high-temperature conduction of the materials in the feeding pipe to the speed reducer, so as to affect the normal operation of the speed reducer, and the practicability of the device is improved.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the solid particles separated from the exhaust gas are actively transported by the discharge device, the solid particles are controlled to be sent back to the boiler, the return rate of the solid particles is controlled at the same time, and the separated solid particles are stored by the storage structure, which improves the practicality of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a high-temperature resistant valve, a geared motor, a temperature sensor, and quick connectors.

[0014] Figure 2 This is a first cross-sectional structural diagram of the present invention;

[0015] Figure 3 This is a schematic diagram of the second cross-sectional structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the third cross-sectional structure of this utility model;

[0017] Figure 5 This is a partially enlarged structural schematic diagram of the present invention;

[0018] The following are labels in the attached diagram: 1. Cyclone separator; 2. Air outlet; 3. Air inlet; 4. Discharge hopper; 5. Feed pipe; 6. Gear motor; 7. Spiral; 8. Semi-circular protrusion; 9. High-temperature resistant valve; 10. Small spiral blades; 11. Insulation layer; 12. Heat exchange tube; 13. Quick connector; 14. Sealed chamber; 15. Temperature sensor; 16. Insulation plate. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete.

[0020] Example 1

[0021] Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the storage structure is installed on the discharge device;

[0022] First, the boiler exhaust gas is sent into the cyclone separator 1 through the air inlet 3 to form a gas vortex. The separated gas is discharged through the air outlet 2, and the solid particles fall into the feeding pipe 5 through the discharge hopper 4. The geared motor 6 is turned on to transmit power to the screw 7 to drive the screw 7 to rotate, thereby pushing the solid particles into the left side of the feeding pipe 5. The particle material is stored on the upper left side of the feeding pipe 5. When it is necessary to return the material, the high temperature valve 9 is opened to push the material out.

[0023] The discharge device includes a cyclone separator 1, an air outlet 2, an air inlet 3, a discharge hopper 4, a feeding pipe 5, a geared motor 6, and a screw 7. The top surface of the cyclone separator 1 is provided with an air outlet 2, the upper side of the cyclone separator 1 is provided with an air inlet 3, the bottom of the cyclone separator 1 is provided with a discharge hopper 4, the output end of the discharge hopper 4 is connected to the right side of the feeding pipe 5, the right end of the feeding pipe 5 is installed with a geared motor 6, the feeding pipe 5 is installed with a screw 7, and the output end of the geared motor 6 is connected to the screw 7.

[0024] The storage structure includes a semi-circular protrusion 8, a high-temperature resistant valve 9, and a small spiral blade 10. The lower part of the feeding pipe 5 is provided with a semi-circular protrusion 8, which extends from the middle of the feeding pipe 5 to the front of the feeding pipe 5. The front end face of the feeding pipe 5 is provided with a high-temperature resistant valve 9, and the front part of the spiral 7 is provided with a small spiral blade 10.

[0025] It also includes an insulation layer 11, a heat exchange tube 12, and a quick connector 13. The left side of the feed pipe 5 is fitted with an insulation layer 11, and the heat exchange tube 12 is wound inside the insulation layer 11. Multiple quick connectors 13 are installed on the side of the insulation layer 11, and the quick connectors 13 are connected to the ports of the heat exchange tube 12.

[0026] It also includes a sealed chamber 14 and a temperature sensor 15. A set of sealed chambers 14 is provided inside the semi-circular protrusion 8, and a temperature sensor 15 is installed on the top of the sealed chamber 14.

[0027] It also includes a heat insulation plate 16, which is provided on the right side of the feed pipe 5;

[0028] The device actively transports the solid particles separated from the exhaust gas through the discharge device, controls the return of the solid particles to the boiler, and controls the return rate of the solid particles. The separated solid particles are stored through the storage structure, which improves the practicality of the device.

[0029] like Figures 1 to 5As shown, this utility model discloses a boiler differential pressure balancing return material device. During operation, boiler exhaust gas is first sent from the air inlet 3 into the cyclone separator 1 to form a gas vortex. The separated gas is discharged from the air outlet 2, and solid particles fall from the discharge hopper 4 into the inside of the feeding pipe 5. The geared motor 6 is turned on to transmit power to the screw 7, which drives the screw 7 to rotate, thereby pushing the solid particles into the left side of the feeding pipe 5. The particle material is stored on the upper left side of the feeding pipe 5. When return material is needed, the high temperature resistant valve 9 is opened to push the material out.

[0030] The cyclone separator 1 of the boiler differential pressure balancing return device of this utility model is purchased from the market. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A boiler differential pressure balanced material return device; characterized by, The utility model relates to a kind of material discharging device and storage structure, and the storage structure is installed on the material discharging device;Material discharging device includes cyclone (1), air outlet (2), air inlet (3), discharge hopper (4), feeding pipe (5), speed reducer (6) and spiral (7), air outlet (2) is provided on the top end surface of cyclone (1), air inlet (3) is provided on the upper portion of the side of cyclone (1), discharge hopper (4) is provided on the bottom of cyclone (1), the output end of discharge hopper (4) is connected with right portion in feeding pipe (5), speed reducer (6) is installed on the end surface of feeding pipe (5), spiral (7) is installed in feeding pipe (5), the output end of speed reducer (6) is connected with spiral (7);Storage structure includes semicircle arc protrusion (8), high temperature resistant valve (9) and small spiral blade (10), semicircle arc protrusion (8) is provided in lower portion in feeding pipe (5), semicircle arc protrusion (8) extends from middle portion in feeding pipe (5) to front portion in feeding pipe (5), high temperature resistant valve (9) is provided on the front end surface of feeding pipe (5), and small spiral blade (10) is provided on the front portion of spiral (7).

2. A boiler differential pressure balanced return device as claimed in claim 1, wherein, It further includes heat preservation layer (11), heat exchange pipe (12) and quick connector (13), left portion of feeding pipe (5) is sleeved with heat preservation layer (11), heat exchange pipe (12) is wound in heat preservation layer (11), and multiple groups of quick connector (13) are installed on the side of heat preservation layer (11), and quick connector (13) is connected with the port of heat exchange pipe (12).

3. A boiler differential pressure balanced return device as claimed in claim 2, wherein, It further includes sealing chamber (14) and temperature sensor (15), a group of sealing chamber (14) is arranged in semicircle arc protrusion (8), and temperature sensor (15) is installed in top portion in sealing chamber (14).

4. A boiler differential pressure balanced return device as claimed in claim 3, wherein, It further includes heat insulation plate (16), and right portion in feeding pipe (5) is provided with heat insulation plate (16).

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