Air door with adjustable air volume

Abstract

The air door comprises an air door body, an air opening is fixedly formed in the outer side of the air door body, a containing box is fixed to the end of the air door body in a threaded connection mode, an air blocking door is movably installed in the containing box, and a gearbox is installed on the upper side of the right wall of the air door body in a threaded connection mode. A handle connecting shaft is installed at the end of the gearbox, an output shaft on the gearbox is fixedly connected with the driving shaft through a coupler, and a pointer is fixedly installed on the output shaft. According to the air door with the adjustable air volume, when the driving pointer rotates, the mark holes in the driving pointer are formed in the corresponding numbers in a framing mode, and the corresponding ventilation volume of the air door body can be selected; when the ventilation quantity is manually adjusted, the experience and feeling of operators are not needed, the adjustment results of different operators each time are consistent, and the influence on the stability and efficiency of boiler combustion is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler equipment field, concretely is a damper of adjustable air volume. BACKGROUND

[0002] The damper working principle of boiler mainly is through the control ventilation section size to adjust the air quantity of entering the boiler, thereby satisfies the demand to the air in the boiler combustion process, takes the example of the commonly used baffle damper, and its working principle is specifically as follows: the damper usually is composed of one or more rotatable baffle, and the baffle is installed in the air duct, when the baffle is parallel with the air duct, the ventilation section is maximum, and the air can pass smoothly, and the damper is in the open state, when the baffle rotates to be perpendicular with the air duct or form certain angle, will block part or all air flow, reduce the ventilation section, thereby limit the air to enter the boiler, at this time, the damper is in the closed or partial closed state,

[0003] In some small boilers, the commonly used manual baffle damper, the angle of baffle is controlled by artificial rotating handle, realizes the opening and closing degree adjustment of damper, the artificial adjustment mainly relies on the experience and feeling of operator, and the judgment standard and operation habit of different operators exist difference, leads to the inconsistent result of each adjustment, influences the stability and efficiency of boiler combustion. CONTENT OF UTILITY MODEL

[0004] The utility model aims at providing a damper of adjustable air volume to solve the defects mentioned in the above background technology.

[0005] In order to achieve the above object, provide a damper of adjustable air volume, including the damper body, the outside fixed installation of damper body has the air port, and the end of damper body is fixed with the containing box, and the inside movable installation of containing box has the damper, and the upper side screw joint of the right wall of damper body installs the gearbox, the end of gearbox installs handle connecting shaft, and the output shaft on gearbox is fixedly connected with driving shaft through the connecting shaft, and the pointer is fixedly installed on the output shaft, and the side of pointer is provided with air volume calibration piece, and the bottom screw joint of air volume calibration piece is installed on the damper body.

[0006] Preferably, the handle connecting shaft is driven to rotate by the gearbox and the output shaft, and a first umbrella gear is installed on the driving shaft fixedly connected to the end of the output shaft, and the driving shaft is movably arranged above the damper body.

[0007] Preferably, the transmission box is screw-jointed to the top left side of the damper body, and the first umbrella gear and the second umbrella gear are movably arranged in the transmission box, and the sizes of the first umbrella gear and the second umbrella gear are adapted to each other, and the first umbrella gear and the second umbrella gear are meshingly connected.

[0008] Preferably, the rotation shaft of the second bevel gear is fixedly connected with the driven shaft through a connecting shaft, and the end of the driven shaft away from the second bevel gear is fixedly connected with the damper.

[0009] Preferably, the pointer is an S-shaped structure made of metal, and a pointed part is arranged at the top of the pointer, and the pointed part is triangular, and a rectangular mark hole is arranged at the upper part of the pointer.

[0010] Preferably, the air volume calibration sheet is a fan-shaped structure made of metal, and a plurality of calibration openings are uniformly arranged on the circumferential outer wall of the air volume calibration sheet.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] 1. The handle connecting shaft drives the pointer to rotate through the gearbox and the output shaft, and the output shaft drives the damper to rotate through the driving shaft, the first bevel gear, the second bevel gear and the driven shaft, so that the area of the damper covering the air inlet is changed to change the ventilation volume of the damper body.

[0013] 2. When the output shaft rotates, the pointer is driven to rotate, and the pointed part at the top of the driving pointer points to the calibration openings at different positions on the top of the air volume calibration sheet to adjust the ventilation volume of the damper body; the numbers representing different air volumes corresponding to the plurality of calibration openings can be arranged at the bottom of the plurality of calibration openings, and when the driving pointer rotates, the mark hole frame on the driving pointer is selected on the corresponding numbers, so that the ventilation volume of the damper body can be selected; when the ventilation volume is manually adjusted, the experience and feeling of the operator are not required, the results of the adjustment by different operators are consistent each time, and the stability and efficiency of the boiler combustion are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a front view of the structure of the utility model;

[0015] Figure 2 It is a right side view of the utility model; Figure 1

[0016] Figure 3 It is a top view of the utility model; Figure 1

[0017] Figure 4 It is a front view of the utility model; Figure 1

[0018] Figure 5 It is a schematic view of the damper and the connecting structure thereof;

[0019] Figure 6 It is a schematic view of the pointer and the air volume calibration sheet structure. ​​​

[0020] Marked numbers in the figure: 1, air door body; 2, air port; 3, handle connecting shaft; 4, gearbox; 5, output shaft; 6, pointer; 61, tip; 62, mark hole; 7, air volume calibration sheet; 71, calibration gap; 8, driving shaft; 9, first umbrella gear; 10, second umbrella gear; 11, transmission box; 12, driven shaft; 13, air baffle; 14, containing box. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-6 The utility model provides a kind of air volume adjustable air door, including air door body 1, air port 2 is fixedly installed on the outside of air door body 1, and the end of air door body 1 is fixedly connected with containing box 14 by screwing, simultaneously, air baffle 13 is movably installed in containing box 14, and variable speed box 4 is fixedly connected on the right wall upper side of air door body 1 by screwing, handle connecting shaft 3 is installed on the end of variable speed box 4, and output shaft 5 on variable speed box 4 is fixedly connected with driving shaft 8 by connecting shaft, pointer 6 is fixedly installed on output shaft 5, and air volume calibration sheet 7 is arranged on the side of pointer 6, simultaneously, air volume calibration sheet 7 bottom is fixedly connected on air door body 1 by screwing.

[0023] Working principle: when the operator uses it, the device is installed at the air outlet of the air blower. The gas accelerated by the air blower enters the inside of the boiler through the air door body 1 to complete the air inlet combustion work. When the air volume of the air door body 1 needs to be adjusted, the handle is installed on the handle connecting shaft 3, the handle is rotated, the handle connecting shaft 3 drives the pointer 6 to rotate through the gearbox 4 and the output shaft 5, at the same time, the output shaft 5 drives the air door 13 to rotate through the driving shaft 8, the first umbrella gear 9, the second umbrella gear 10 and the driven shaft 12. By changing the area of the air door 13 covering the air inlet 2, the air volume of the air door body 1 is changed. The specific size of the air volume can be calibrated and confirmed by the pointer 6 and the air volume calibration sheet 7. The specific way is: when the output shaft 5 rotates, the pointer 6 rotates, the tip 61 at the top of the pointer 6 adjusts the air volume of the air door body 1 by pointing to the calibration gap 71 at the top of the air volume calibration sheet 7. Different air volumes can be represented by numbers set at the bottom of the calibration gap 71. When the pointer 6 rotates, the mark hole 62 on the pointer 6 frames the corresponding numbers, so that the air volume of the air door body 1 can be selected. When the air volume is adjusted manually, it does not need to rely on the experience and feeling of the operator. The result of each adjustment by different operators is consistent, which avoids affecting the stability and efficiency of the boiler combustion.

[0024] The handle connecting shaft 3 drives the pointer 6 to rotate through the gearbox 4 and the output shaft 5, and the driving shaft 8 fixedly connected to the end of the output shaft 5 is provided with the first umbrella gear 9.

[0025] As a preferred embodiment, the top left side of the air door body 1 is screw-connected with the transmission box 11, and the first umbrella gear 9 and the second umbrella gear 10 are movably installed in the inside of the transmission box 11. The sizes of the first umbrella gear 9 and the second umbrella gear 10 are matched, and the first umbrella gear 9 and the second umbrella gear 10 are connected in meshing.

[0026] The rotating shaft of the second umbrella gear 10 is fixedly connected with the driven shaft 12 through the connecting shaft, and the end of the driven shaft 12 away from the second umbrella gear 10 is fixedly connected with the air door 13.

[0027] As a preferred embodiment, the pointer 6 is made of metal material and has an "S" shape structure, and the top of the pointer 6 is provided with the tip 61, which is triangularly arranged. The upper part of the pointer 6 is provided with a rectangular mark hole 62.

[0028] The air volume calibration sheet 7 is made of metal material and has a fan shape structure, and a plurality of calibration gaps 71 are uniformly arranged on the circumferential outer wall of the air volume calibration sheet 7.

[0029] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An air damper of adjustable air volume, comprising a damper body (1), characterized in that: The outer side of the damper body (1) is fixedly installed with an air port (2), and the end of the damper body (1) is screw-fixedly installed with a containing box (14), while the inside of the containing box (14) is movably installed with a wind door (13), and the right wall upper side of the damper body (1) is screw-installed with a gearbox (4), the end of the gearbox (4) is installed with a handle connecting shaft (3), and the output shaft (5) on the gearbox (4) is fixedly connected with a driving shaft (8) through a connecting shaft, the output shaft (5) is fixedly installed with a pointer (6), and the side of the pointer (6) is provided with a wind volume calibration sheet (7), while the bottom of the wind volume calibration sheet (7) is screw-installed on the damper body (1).

2. A damper according to claim 1, wherein: The handle connecting shaft (3) is driven to rotate the pointer (6) through the gearbox (4) and the output shaft (5), and the driving shaft (8) fixedly connected with the end of the output shaft (5) is installed with a first umbrella gear (9), while the driving shaft (8) is movably arranged above the damper body (1).

3. A damper according to claim 2, wherein: The top left side of the damper body (1) is screw-installed with a transmission box (11), and the inside of the transmission box (11) is movably installed with a first umbrella gear (9) and a second umbrella gear (10) respectively, while the sizes of the first umbrella gear (9) and the second umbrella gear (10) are matched, and the first umbrella gear (9) and the second umbrella gear (10) are meshingly connected.

4. An air volume adjustable damper according to claim 3, wherein: The rotating shaft of the second umbrella gear (10) is fixedly connected with a driven shaft (12) through a connecting shaft, and the end of the driven shaft (12) away from the second umbrella gear (10) is fixedly connected with the wind door (13).

5. The damper of claim 1, wherein: The pointer (6) is made of metal material and has a "S" shape structure, the top of the pointer (6) is provided with a pointed end (61), while the pointed end (61) is triangularly arranged, and the upper part of the pointer (6) is provided with a rectangular mark hole (62).

6. The damper of claim 1, wherein: The wind volume calibration sheet (7) is made of metal material and has a fan shape structure, and a plurality of calibration openings (71) are uniformly arranged on the circumferential outer wall of the wind volume calibration sheet (7).

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