Air volume adjusting air bellow for boiler

Abstract

The utility model relates to the technical field of power plant boilers, and discloses a boiler air volume adjusting air bellow which comprises a base and a centrifugal air bellow installed on the base, an adjusting air inlet pipe is installed at the position of an air inlet of the centrifugal air bellow, a three-blade type valve blade is arranged in the air pipe, an adjusting arm of the three-blade type valve blade is arranged on the outer side of the air pipe, and the centrifugal air bellow is installed on the base. The telescopic end of the telescopic adjusting piece installed at the upper end of the air pipe is connected with the adjusting arm of the three-blade type valve blade, when the air volume is adjusted, the telescopic end of the telescopic adjusting piece drives the adjusting arm to move upwards or downwards, the opening degree of the three-blade type valve blade is adjusted, and the air volume entering the centrifugal air bellow through the air pipe can be controlled; and the air quantity guided into the boiler is more convenient to adjust.

Description

Technical Field

[0001] This utility model relates to the field of power plant boiler technology, and in particular to a boiler air volume regulating air box. Background Technology

[0002] In modern industrial production and energy supply, boilers, as a key piece of equipment, are widely used in many industries such as power generation, chemical industry, and heating. During the operation of boilers in power plants, the regulation of airflow is crucial, directly affecting fuel combustion efficiency and boiler thermal efficiency. However, existing boiler bellows used in power plants are not convenient for adjusting airflow, necessitating a bellows design that facilitates the regulation of boiler airflow. Utility Model Content

[0003] This utility model provides a boiler air volume regulating air box to solve the problem that the existing boiler air boxes used in power plants are inconvenient to regulate air volume during use.

[0004] The technical problem solved by this utility model is achieved by the following technical solution:

[0005] A boiler air volume regulating air box, comprising:

[0006] A base and a centrifugal fan box mounted on the base, wherein an adjustable air inlet pipe is installed at the air inlet of the centrifugal fan box;

[0007] The adjustable air inlet pipe includes a detachable air duct installed at the air inlet of the centrifugal air box and a three-lobe valve installed inside the air duct. The adjusting arm of the three-lobe valve is located on the outside of the air duct. A telescopic adjusting component is installed at the upper end of the air duct, and the telescopic end of the telescopic adjusting component is connected to the adjusting arm of the three-lobe valve.

[0008] In one specific implementation, the three-lobe valve includes an adjusting rod and a rotating shaft connected to the adjusting rod. The rotating shaft is provided in three sets. The rotating shaft is axially connected to the air duct. The other end of the rotating shaft is connected to a valve, and the other end of the valve is rotatably connected to the inner wall of the air duct.

[0009] In one specific implementation, the adjusting linkage includes a main boom and a cross link connected to one end of the main boom. The two ends of the cross link are connected to auxiliary booms. The cross link is perpendicular to the main boom, and the auxiliary boom is parallel to the main boom.

[0010] One set of the rotating shafts is connected to the main boom, and the other two sets of rotating shafts are respectively connected to the auxiliary booms at both ends of the cross link.

[0011] In one specific implementation, a connecting slot is provided at one end of the main boom.

[0012] In one specific implementation, the telescopic adjustment component includes a support base fixedly mounted on the duct and a servo electric push rod mounted on the support base. The telescopic end of the servo electric push rod is provided with a connecting end for connecting to the main boom.

[0013] In one specific implementation, the connection end includes a connection block connected to the telescopic end of the servo electric actuator and a plug shaft disposed on one side of the connection block. The plug shaft is inserted into the connection slot, and a bolt is threaded onto the other end of the plug shaft. The diameter of the bolt end is larger than the width of the connection slot.

[0014] In one specific implementation, the centrifugal fan box includes a drive motor mounted on a base and a coupling connected to the output end of the drive motor. A cover is provided at one end of the base, and an impeller is rotatably disposed inside the cover. The shaft at one end of the impeller is connected to the coupling.

[0015] The beneficial effects of this utility model are:

[0016] A three-lobe valve is installed inside the duct, and the adjusting arm of the three-lobe valve is located outside the duct. The telescopic end of the telescopic adjusting component installed at the upper end of the duct is connected to the adjusting arm of the three-lobe valve. When adjusting the air volume, the telescopic adjusting component moves the adjusting arm up or down to adjust the opening of the three-lobe valve, so that the air volume entering the centrifugal air box through the duct can be controlled, and the adjustment of the air volume introduced into the boiler is more convenient. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a first-person view structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model.

[0020] Figure 3 This is a first-view structural schematic diagram of the adjustable air inlet pipe of this utility model.

[0021] Figure 4 This is a schematic diagram of the second-view structure of the adjustable air inlet pipe of this utility model.

[0022] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0023] Figure 6 This is a schematic diagram of the overall partial cross-sectional structure of this utility model.

[0024] In the diagram: 100, base; 200, centrifugal air box; 210, drive motor; 220, coupling; 230, casing; 240, impeller; 300, regulating air inlet pipe; 310, air duct; 320, three-lobe valve; 321, adjusting connecting rod; 301, main boom; 302, horizontal connecting rod; 303, auxiliary boom; 304, connecting slot; 322, rotating shaft; 323, valve; 330, telescopic adjusting component; 331, support base; 332, servo electric push rod; 305, connecting block; 306, insert shaft; 307, bolt. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] Reference Figure 1-6 As shown, this utility model provides a boiler air volume regulating air box, comprising:

[0033] The base 100 and the centrifugal air box 200 installed on the base 100, the air inlet of the centrifugal air box 200 is equipped with an adjustable air inlet pipe 300;

[0034] The adjustable air inlet duct 300 includes a detachable air duct 310 installed at the air inlet of the centrifugal air box 200 and a three-lobe valve 320 installed inside the air duct 310. The adjusting arm of the three-lobe valve 320 is located outside the air duct 310. A telescopic adjusting component 330 is installed at the upper end of the air duct 310. The telescopic end of the telescopic adjusting component 330 is connected to the adjusting arm of the three-lobe valve 320.

[0035] A three-lobe valve 320 is installed inside the air duct 310, and the adjusting arm of the three-lobe valve 320 is installed outside the air duct 310. The telescopic end of the telescopic adjusting member 330 installed at the upper end of the air duct 310 is connected to the adjusting arm of the three-lobe valve 320. When adjusting the air volume, the telescopic adjusting member 330 drives the adjusting arm to move up or down, thereby adjusting the opening of the three-lobe valve 320. This allows the air volume entering the centrifugal air box 200 through the air duct 310 to be controlled, making it more convenient to adjust the air volume introduced into the boiler.

[0036] As a further preferred embodiment of the above, the three-lobe valve 320 includes an adjusting rod 321 and a rotating shaft 322 connected to the adjusting rod 321. The rotating shaft 322 is provided in three sets. The rotating shaft 322 is axially connected to the air duct 310. The other end of the rotating shaft 322 is connected to a valve 323. The other end of the valve 323 is rotatably connected to the inner wall of the air duct 310.

[0037] The adjusting link 321 includes a main boom 301 and a cross link 302 connected to one end of the main boom 301. The two ends of the cross link 302 are connected to auxiliary booms 303. The cross link 302 is perpendicular to the main boom 301, and the auxiliary boom 303 is parallel to the main boom 301.

[0038] One end of the main boom 301 is provided with a connecting slot 304.

[0039] One set of rotating shafts 322 is connected to the main boom 301, and the other two sets of rotating shafts 322 are connected to the auxiliary booms 303 at both ends of the cross link 302, respectively.

[0040] As a further preferred embodiment of the above-described embodiment, the telescopic adjustment member 330 includes a support base 331 fixedly mounted on the air duct 310 and a servo electric push rod 332 mounted on the support base 331. The telescopic end of the servo electric push rod 332 is provided with a connecting end for connecting to the main boom 301.

[0041] The connection end includes a connection block 305 connected to the telescopic end of the servo electric push rod 332 and a plug shaft 306 disposed on one side of the connection block 305. The plug shaft 306 is inserted into the connection slot 304. The other end of the plug shaft 306 is threaded with a bolt 307. The diameter of the bolt 307 is larger than the width of the slot of the connection slot 304.

[0042] When the main boom 301 is horizontal, the valves 323 in the duct 310 are all horizontally positioned, and the air intake of the duct 310 is at its maximum. The extension end of the servo electric push rod 332 pushes the main boom 301 downward, causing the adjusting rod 321 to drive the rotating shaft 322 to rotate, which in turn causes the valves 323 in the duct 310 to rotate. After rotation, the valves 323 tilt in the duct 310, and the air intake of the duct 310 decreases. When the extension end of the servo electric push rod 332 pulls the main boom 301 upward, the valves 323 in the duct 310 return to the horizontal position, and the air intake of the duct 310 increases.

[0043] As a further preferred embodiment of the above, the centrifugal fan box 200 includes a drive motor 210 mounted on a base 100 and a coupling 220 connected to the output end of the drive motor 210. A cover 230 is provided at one end of the base 100, and an impeller 240 is rotatably disposed inside the cover 230. The shaft at one end of the impeller 240 is connected to the coupling 220.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A damper for regulating the air volume of a boiler, characterized in that The utility model relates to a centrifugal fan device, including: Base (100) and install on centrifugal fan (200) of base (100), install the regulating air inlet pipe (300) at the air inlet of centrifugal fan (200), Wherein, the regulating air inlet pipe (300) includes the air pipe (310) of detachable connection installation at the air inlet of centrifugal fan (200) and the three-blade valve leaf (320) of installation in air pipe (310), the regulating arm of three-blade valve leaf (320) is arranged outside air pipe (310), the upper end of air pipe (310) is installed with telescopic adjusting part (330), the telescopic end of telescopic adjusting part (330) is connected on the regulating arm of three-blade valve leaf (320).

2. A damper for a boiler according to claim 1, characterised in that: Three-blade valve leaf (320) includes regulating connecting rod (321) and the rotation axis (322) of connection on regulating connecting rod (321), rotation axis (322) sets three groups, rotation axis (322) is connected on air pipe (310), the other end of rotation axis (322) is connected with valve leaf (323), the other end of valve leaf (323) rotatably connected on the inner wall of air pipe (310).

3. A damper for a boiler according to claim 2, wherein: Regulating connecting rod (321) includes main arm rod (301) and the transverse connecting rod (302) of connection on one end of main arm rod (301), the two ends of transverse connecting rod (302) are connected with auxiliary arm rod (303), the transverse connecting rod (302) is perpendicular to main arm rod (301), auxiliary arm rod (303) is parallel to main arm rod (301), One group of rotation axis (322) is connected with main arm rod (301), and the other two groups of rotation axis (322) are connected with auxiliary arm rod (303) at the two ends of transverse connecting rod (302) respectively.

4. A damper for a boiler according to claim 3, wherein: One end of main arm rod (301) is provided with a connecting notch (304).

5. A draft regulator bellows for a boiler as defined in claim 4, characterized in that: Telescopic adjusting part (330) includes support seat (331) fixedly arranged on air pipe (310) and servo electric push rod (332) installed on support seat (331), the telescopic end of servo electric push rod (332) is provided with a connecting end for connecting with main arm rod (301).

6. A damper for a boiler according to claim 5, wherein: The connecting end includes a connecting block (305) connected to the telescopic end of the servo electric push rod (332) and a plug shaft (306) arranged on one side of the connecting block (305). The plug shaft (306) is inserted into the connecting notch (304), and a bolt (307) is threadedly installed on the other end of the plug shaft (306). The diameter of the end of the bolt (307) is greater than the width of the notch of the connecting notch (304).

7. A damper for a boiler according to any one of claims 1 to 6, characterised in that: The centrifugal fan (200) includes a drive motor (210) mounted on the base (100) and a shaft coupling (220) connected to the output end of the drive motor (210). One end of the base (100) is provided with a housing (230), and an impeller (240) is rotatably arranged in the housing (230). The shaft at one end of the impeller (240) is connected to the shaft coupling (220).

Images