Air supply device capable of automatically adjusting air volume for boiler air supply

Abstract

The utility model provides an automatic air volume adjusting air supply device for boiler air supply, and relates to the field of boiler air supply devices, the automatic air volume adjusting air supply device comprises an air supply assembly and a monitoring assembly, the air supply assembly comprises a shell, an impeller and an air pipe, the impeller is installed in an inner cavity of the shell, and the air pipe is communicated with an air outlet of the shell; an adjusting assembly is mounted at an air outlet of the shell and comprises a mounting box, a first motor, a movable plate, a first gear, a second gear and a transmission rod; by arranging the monitoring assembly and the adjusting assembly, the effect of automatically adjusting the air supply volume is achieved, the air flow meter monitors the air supply flow, the pressure sensor and the temperature sensor monitor the temperature and the pressure in the boiler combustion chamber in real time, the adjusting assembly adjusts the opening degree of the movable plate according to monitored data, and the adjustment effect is good. Therefore, the air supply amount can be automatically adjusted, and the using effect of the boiler air supply device is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the field of boiler air supply devices, and specifically relates to an air supply device for a boiler that automatically adjusts the air volume for air supply. Background Art

[0002] The boiler air supply device is an important component in the boiler system. Its main function is to supply the air required for combustion to the boiler combustion chamber to support the full combustion of fuel and improve the utilization rate of energy.

[0003] According to the Chinese patent application number: 202020684419.4, there is disclosed an adjustable boiler induced draft fan, which includes a motor, a mounting plate, an air volume adjustment device, an air outlet, an air inlet, a blower housing, blower blades, a mounting frame, louvers, an adjustment handle, a driven gear, a connecting shaft, and a driving gear. By installing an air volume adjustment device inside the air outlet of the boiler induced draft fan, when using the boiler induced draft fan to supply air to the boiler, the opening and closing size of the louvers can be adjusted through the adjustment handle on the air volume adjustment device, thereby adjusting the air volume supplied by the boiler induced draft fan. In this way, the air volume can be adjusted according to actual needs. Moreover, heat dissipation reinforcing ribs are installed on the surface of the blower housing of the boiler induced draft fan. Through the setting of the heat dissipation reinforcing ribs, on the one hand, the strength of the blower housing can be greatly increased, and on the other hand, the contact area between the blower housing and the air is increased, so that the heat on the blower housing can be dissipated in time, improving the performance of the boiler induced draft fan.

[0004] The prior art effectively solves the problem that the existing boiler induced draft fan lacks a certain multi-range air volume adjustment device during use, so that the air volume blown by the boiler induced draft fan cannot be well controlled, and has the advantages of being able to adjust the air volume blown by the induced draft fan and improving the performance of the boiler induced draft fan. However, this type of boiler induced draft fan requires manual adjustment of the air volume during use, and the induced draft fan cannot be adaptively adjusted according to the combustion conditions in the combustion chamber, thereby reducing the use effect of the boiler air supply device.

[0005] In summary, the utility model provides an air supply device for a boiler that automatically adjusts the air volume to solve the above problems. Summary of the Utility Model

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0007] An air supply device for a boiler that automatically adjusts the air volume, comprising an air supply component and a monitoring component. The air supply component includes a housing, an impeller, and an air duct. The impeller is installed in the inner cavity of the housing, and the air duct is communicated with the air outlet of the housing. An adjustment component is installed at the air outlet of the housing. The adjustment component includes an installation box, a first motor, a movable plate, a first gear, a second gear, and a transmission rod. The movable plate is located in the inner cavity of the air outlet of the housing and is movably connected to the inner wall of the housing through a rotating shaft. The first gear, the second gear, and the transmission rod are all installed in the inner cavity of the installation box. The installation box is fixedly connected to the housing. The monitoring component includes a control box, a controller, an inverter, an air flow meter, a pressure sensor, and a temperature sensor. The air flow meter is installed on the surface of the air duct, and the detection end of the air flow meter is located in the inner cavity of the air duct. The output ends of the air flow meter, the pressure sensor, and the temperature sensor are all connected to the input end of the controller. The output end of the controller is respectively connected to the input ends of the adjustment component and the inverter. A driving component is arranged on the back of the housing, and the driving component is used to provide power for the air supply component.

[0008] Further, in the present utility model, the driving component includes a protective cover, a second motor, a driving wheel, a driven wheel, a connecting rod, and a support rod. The output end of the inverter is connected to the input end of the second motor.

[0009] Further, in the present utility model, the driving wheel, the driven wheel, the connecting rod, and the support rod are all installed in the inner cavity of the protective cover. One end of the protective cover is fixedly connected to the housing.

[0010] Further, in the present utility model, the driven wheel and the connecting rod are connected by belt drive. One end of the connecting rod is fixedly connected to the driven wheel. The other end of the connecting rod penetrates into the inner cavity of the housing and is fixedly connected to the impeller. The output end of the second motor penetrates into the inner cavity of the protective cover and is in transmission connection with the driving wheel.

[0011] Further, in the present utility model, one end of the support rod is fixedly connected to the driven wheel, and the other end of the support rod is movably connected to the inner wall of the protective cover through a bearing.

[0012] Further, in the present utility model, the first motor is fixed on the surface of the installation box. The first gear meshes with the second gear. The output end of the first motor penetrates into the inner cavity of the installation box and is in transmission connection with the first gear. One end of the transmission rod is fixedly connected to the second gear, and the other end of the transmission rod penetrates into the inner cavity of the housing and is fixedly connected to the movable plate.

[0013] Further, in the present utility model, the pressure sensor and the temperature sensor are both installed in the boiler combustion chamber. The controller and the inverter are both installed in the inner cavity of the control box.

[0014] Beneficial effects: The utility model has the following beneficial effects:

[0015] By providing a air supply component and a drive component, the utility model can supply air to the combustion chamber of the boiler, ensuring full combustion of the fuel and improving the utilization efficiency of energy. By providing a monitoring component and an adjustment component, it can automatically adjust the air supply volume. The air flow meter monitors the air supply flow, and the pressure sensor and temperature sensor monitor the temperature and pressure in the combustion chamber of the boiler in real time. The adjustment component adjusts the opening degree of the movable plate based on the monitoring data, thereby automatically adjusting the air supply volume and effectively improving the use effect of the boiler air supply device. Description of the drawings

[0016] Figure 1 is the front view structural schematic diagram of the utility model;

[0017] Figure 2 is the separated state structural schematic diagram of the drive component and the impeller of the utility model;

[0018] Figure 3 is the separated state structural schematic diagram of the adjustment component of the utility model;

[0019] Figure 4 is the system flow schematic diagram of the utility model.

[0020] In the figure:

[0021] 1. Air supply component; 101. Housing; 102. Impeller; 103. Air duct; 2. Adjustment component; 201. Installation box; 202. First motor; 203. Movable plate; 204. First gear; 205. Second gear; 206. Transmission rod; 3. Monitoring component; 301. Control box; 302. Controller; 303. Frequency converter; 304. Air flow meter; 305. Pressure sensor; 306. Temperature sensor; 4. Drive component; 401. Protective cover; 402. Second motor; 403. Driving wheel; 404. Driven wheel; 405. Connecting rod; 406. Support rod. Detailed implementation manners

[0022] To better understand the technical content of the present utility model, specific embodiments are hereby given and described in conjunction with the accompanying drawings as follows. In the present disclosure, aspects of the present utility model are described with reference to the drawings, and many illustrative embodiments are shown in the drawings. The embodiments of the present disclosure do not necessarily define all aspects of the present utility model. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed by the present utility model are not limited to any implementation manner. Additionally, some aspects disclosed by the present utility model can be used alone, or in any suitable combination with other aspects disclosed by the present utility model.

[0023] Embodiment 1

[0024] As Figures 1-4 shown, this is the first embodiment of the present utility model. This embodiment provides a air supply device for automatically adjusting the air volume for a boiler air supply, which includes an air supply component 1 and a monitoring component 3. The air supply component 1 includes a housing 101, an impeller 102, and an air duct 103. The impeller 102 is installed in the inner cavity of the housing 101, and the air duct 103 is communicated with the air outlet of the housing 101. An adjusting component 2 is installed at the air outlet of the housing 101. The adjusting component 2 includes an installation box 201, a first motor 202, a movable plate 203, a first gear 204, a second gear 205, and a transmission rod 206. The movable plate 203 is located in the inner cavity of the air outlet of the housing 101 and is movably connected to the inner wall of the housing 101 through a rotating shaft. The first gear 204, the second gear 205, and the transmission rod 206 are all installed in the inner cavity of the installation box 201. The installation box 201 is fixedly connected to the housing 101. The monitoring component 3 includes a control box 301, a controller 302, a frequency converter 303, an air flow meter 304, a pressure sensor 305, and a temperature sensor 306. The air flow meter 304 is installed on the surface of the air duct 103, and the detection end of the air flow meter 304 is located in the inner cavity of the air duct 103. The output ends of the air flow meter 304, the pressure sensor 305, and the temperature sensor 306 are all connected to the input end of the controller 302. The output end of the controller 302 is respectively connected to the input ends of the adjusting component 2 and the frequency converter 303. A driving component 4 is provided on the back of the housing 101, and the driving component 4 is used to provide power for the air supply component 1.

[0025] As Figures 1-4As shown, the drive assembly 4 provides power to the impeller 102, causing the impeller 102 to rotate at high speed to generate centrifugal force, driving the air flow through the housing 101 and the air duct 103 to be delivered to the boiler combustion chamber, so as to supply air to the boiler combustion chamber. The air flowmeter 304 monitors the air flow rate being delivered, and the pressure sensor 305 and the temperature sensor 306 monitor the temperature and pressure in the boiler combustion chamber, and send the monitoring results to the controller 302. The controller 302 can be a PID or a DCS. The controller 302 adjusts the opening degree of the adjustment assembly 2 through the adjustment assembly 2 according to the monitoring results or adjusts the frequency of the second motor 402 through the frequency converter 303 to achieve the adjustment of the air supply volume. The output shaft of the first motor 202 rotates to drive the first gear 204 to rotate. When the first gear 204 rotates, it drives the second gear 205 to rotate. When the second gear 205 rotates, it drives the movable plate 203 to rotate through the transmission rod 206. When the movable plate 203 is in the horizontal state, it is in the closed state. When the movable plate 203 is in the horizontal and vertical state, it is in the fully open state. By adjusting the opening angle of the movable plate 203, the air supply volume can be adjusted. The adjustment assembly 2 cooperates with the monitoring assembly 3, so as to be able to automatically adjust the air supply volume of the boiler.

[0026] Embodiment 2

[0027] Referring to Figure 1 and 2 This is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0028] In this embodiment, the drive assembly 4 includes a protective cover 401, a second motor 402, a driving wheel 403, a driven wheel 404, a connecting rod 405 and a support rod 406. The output end of the frequency converter 303 is connected to the input end of the second motor 402.

[0029] The driving wheel 403, the driven wheel 404, the connecting rod 405 and the support rod 406 are all installed in the inner cavity of the protective cover 401, and one end of the protective cover 401 is fixedly connected to the housing 101.

[0030] The driven wheel 404 and the connecting rod 405 are connected by belt drive. One end of the connecting rod 405 is fixedly connected to the driven wheel 404. The other end of the connecting rod 405 penetrates into the inner cavity of the housing 101 and is fixedly connected to the impeller 102. The output end of the second motor 402 penetrates into the inner cavity of the protective cover 401 and is in transmission connection with the driving wheel 403.

[0031] One end of the support rod 406 is fixedly connected to the driven wheel 404, and the other end of the support rod 406 is movably connected to the inner wall of the protective cover 401 through a bearing.

[0032] As Figure 1 and 2As shown in the figure, the protective cover 401 is used to provide a protective and installation space for the driving wheel 403, the driven wheel 404, the connecting rod 405 and the support rod 406. The output shaft of the second motor 402 rotates to drive the driving wheel 403 to rotate. When the driving wheel 403 rotates, it drives the driven wheel 404 to rotate through a belt. When the driven wheel 404 rotates, the support rod 406 can support and limit it. While the driven wheel 404 rotates, it drives the impeller 102 to rotate at a high speed in the inner cavity of the housing 101 through the connecting rod 405, so as to be able to transport external fresh air to the boiler combustion chamber. The controller 302 controls the frequency of the second motor 402 through the frequency converter 303, so as to be able to adjust the rotation speed of the impeller 102, and thus be able to adjust the air supply volume.

[0033] Embodiment 3

[0034] Referring to Figure 1 、 3 and 4, this is the third embodiment of the present utility model, and this embodiment is based on the first two embodiments.

[0035] In this embodiment, the first motor 202 is fixed on the surface of the installation box 201. The first gear 204 meshes with the second gear 205. The output end of the first motor 202 penetrates into the inner cavity of the installation box 201 and is in transmission connection with the first gear 204. One end of the transmission rod 206 is fixedly connected with the second gear 205, and the other end of the transmission rod 206 penetrates into the inner cavity of the housing 101 and is fixedly connected with the movable plate 203.

[0036] The pressure sensor 305 and the temperature sensor 306 are both installed in the boiler combustion chamber. The controller 302 and the frequency converter 303 are both installed in the inner cavity of the control box 301.

[0037] As Figure 1 、 3 and 4 show, when the output shaft of the first motor 202 rotates forward, the movable plate 203 moves upward. When the output shaft of the first motor 202 rotates reversely, the movable plate 203 moves downward. When the movable plate 203 turns downward, the air volume can be increased. When the movable plate 203 turns upward, the air volume can be reduced. The control box 301 can provide an installation and protection space for the controller 302 and the frequency converter 303.

[0038] During use, the output shaft of the second motor 402 rotates to drive the driving wheel 403 to rotate. When the driving wheel 403 rotates, it drives the driven wheel 404 to rotate through a belt. When the driven wheel 404 rotates, the support rod 406 can support and limit it. While the driven wheel 404 rotates, it drives the impeller 102 to rotate at a high speed in the inner cavity of the housing 101 through the connecting rod 405, so as to be able to transport external fresh air to the boiler combustion chamber. The air flowmeter 304 monitors the air flow rate of the transported air, and the pressure sensor 305 and the temperature sensor 306 monitor the temperature and pressure in the boiler combustion chamber, and send the monitoring results to the controller 302. The controller 302 adjusts the opening degree of the adjusting component 2 through the adjusting component 2 or adjusts the frequency of the second motor 402 through the frequency converter 303 according to the monitoring results to realize the adjustment of the air supply volume. The output shaft of the first motor 202 rotates to drive the first gear 204 to rotate. When the first gear 204 rotates, it drives the second gear 205 to rotate. When the second gear 205 rotates, it drives the movable plate 203 to rotate through the transmission rod 206. When the movable plate 203 is in the horizontal state, it is in the closed state. When the movable plate 203 is in the horizontal and vertical state, it is in the fully open state. By adjusting the opening angle of the movable plate 203, the air supply volume can be adjusted. The controller 302 controls the frequency of the second motor 402 through the frequency converter 303, so as to be able to adjust the rotation speed of the impeller 102, and thus the air supply volume can also be adjusted.

[0039] The standard parts used in this application document can all be purchased from the market, and can be customized according to the description of the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. The control method is automatically controlled by a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art, which belongs to the common knowledge in this field. And this application document is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail in this application document.

[0040] Although the present utility model has been disclosed above with a preferred embodiment, it is not intended to limit the present utility model. Those with ordinary knowledge in the technical field to which the present utility model belongs can make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to what is defined by the claims.

Claims

1. An air supply device for a boiler that automatically adjusts the air volume, comprising an air supply component (1) and a monitoring component (3), characterized in that: The air supply component (1) includes a housing (101), an impeller (102), and an air duct (103). The impeller (102) is installed in the inner cavity of the housing (101). The air duct (103) is communicated with the air outlet of the housing (101). An adjustment component (2) is installed at the air outlet of the housing (101). The adjustment component (2) includes an installation box (201), a first motor (202), a movable plate (203), a first gear (204), a second gear (205), and a transmission rod (206). The movable plate (203) is located in the inner cavity of the air outlet of the housing (101) and is movably connected to the inner wall of the housing (101) through a rotating shaft. The first gear (204), the second gear (205), and the transmission rod (206) are all installed in the inner cavity of the installation box (201). The installation box (201) is fixedly connected to the housing (101). The monitoring component (3) includes a control box (301), a controller (302), a frequency converter (303), an air flow meter (304), a pressure sensor (305), and a temperature sensor (306). The air flow meter (304) is installed on the surface of the air duct (103), and the detection end of the air flow meter (304) is located in the inner cavity of the air duct (103). The output ends of the air flow meter (304), the pressure sensor (305), and the temperature sensor (306) are all connected to the input end of the controller (302). The output end of the controller (302) is respectively connected to the input ends of the adjustment component (2) and the frequency converter (303). A driving component (4) is arranged on the back of the housing (101), and the driving component (4) is used to provide power for the air supply component (1).

2. The air supply device for automatically adjusting the air volume for boiler air supply according to claim 1, characterized in that: The driving component (4) includes a protective cover (401), a second motor (402), a driving wheel (403), a driven wheel (404), a connecting rod (405), and a support rod (406). The output end of the frequency converter (303) is connected to the input end of the second motor (402).

3. The air supply device for automatically adjusting the air volume for the boiler air supply according to claim 2, characterized in that: The driving wheel (403), the driven wheel (404), the connecting rod (405), and the support rod (406) are all installed in the inner cavity of the protective cover (401). One end of the protective cover (401) is fixedly connected to the housing (101).

4. The air supply device for automatically adjusting the air volume for boiler air supply according to claim 2, characterized in that: The driven wheel (404) and the connecting rod (405) are connected by belt drive. One end of the connecting rod (405) is fixedly connected to the driven wheel (404). The other end of the connecting rod (405) penetrates into the inner cavity of the housing (101) and is fixedly connected to the impeller (102). The output end of the second motor (402) penetrates into the inner cavity of the protective cover (401) and is in transmission connection with the driving wheel (403).

5. The air supply device for automatically adjusting the air volume for a boiler as described in claim 2, characterized in that: One end of the support rod (406) is fixedly connected to the driven wheel (404), and the other end of the support rod (406) is movably connected to the inner wall of the protective cover (401) through a bearing.

6. The air supply device for automatically adjusting the air volume for a boiler as described in claim 1, wherein: The first motor (202) is fixed to the surface of the installation box (201). The first gear (204) meshes with the second gear (205). The output end of the first motor (202) penetrates into the inner cavity of the installation box (201) and is in driving connection with the first gear (204). One end of the transmission rod (206) is fixedly connected to the second gear (205), and the other end of the transmission rod (206) penetrates into the inner cavity of the housing (101) and is fixedly connected to the movable plate (203).

7. The air supply device for automatically adjusting the air volume for boiler air supply according to claim 1, characterized in that: The pressure sensor (305) and the temperature sensor (306) are both installed in the boiler combustion chamber. The controller (302) and the frequency converter (303) are both installed in the inner cavity of the control box (301).

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