CN214617126U

CN214617126U - Centrifugal draught fan for boiler

Info

Publication number: CN214617126U
Application number: CN202022308412.5U
Authority: CN
Inventors: 赵恒�
Original assignee: Jiangsu Gezeweinuo Fluid Technology Co ltd
Current assignee: Jiangsu Gezeweinuo Fluid Technology Co ltd
Priority date: 2020-10-16
Filing date: 2020-10-16
Publication date: 2021-11-05
Anticipated expiration: 2030-10-16

Abstract

The utility model discloses a centrifugal induced draft fan for a boiler. The moving mechanism comprises a first bidirectional screw rod, a second bidirectional screw rod, an adjusting motor and a partition plate. The outer parts of the first bidirectional screw rod and the second bidirectional screw rod are The surfaces are symmetrically screwed with moving blocks, the top of the partition plate is penetrated with a support rod, and the first bidirectional screw rod and the second bidirectional screw rod are connected through a transmission assembly before transmission. The utility model relates to the technical field of induced draft fans. The boiler centrifugal induced draft fan uses the adjusting motor to drive the rotation of the first bidirectional screw rod and the second bidirectional screw rod, so that the moving block moves, and the moving block is used to exert force on the lifting block, so that the lifting wheel protrudes from the outside to the body of the induced draft fan. It is supported to realize convenient movement and solve the problem that the existing boiler centrifugal induced draft fan is inconvenient to move, which increases the difficulty for operators to move it to the position where the cylinder needs to be used, which is time-consuming and labor-intensive, and is not conducive to people's use.

Description

Centrifugal draught fan for boiler

Technical Field

The utility model relates to a draught fan technical field specifically is a boiler centrifugation draught fan.

Background

The induced draft fan is a device which generates negative pressure through the rotation of an impeller and then extracts air from a system (device), and is generally installed at the tail end of a boiler and used for extracting hot flue gas in a hearth. In daily life, ventilators are generally divided into induced draft fans (used under negative pressure) and blowers (used under positive pressure) according to different use modes of positive pressure and negative pressure. Draught fans are widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and draught of boilers and industrial furnaces, cooling and ventilation in air conditioning equipment and household electrical equipment, drying and sorting of grains, air supply of wind tunnels, inflation and propulsion of air cushion boats and the like. The working principle of the induced draft fan is basically the same as that of a turbine compressor, but the pressure change is not large due to low gas flow rate, and the change of the specific volume of the gas is generally not required to be considered, namely the gas is treated as incompressible fluid.

The centrifugal draught fan of current boiler is because its not convenient to remove to increased operating personnel and removed it the degree of difficulty that needs use the cylinder position, wasted time and energy, be unfavorable for people's use, consequently, the utility model provides a centrifugal draught fan of boiler to solve the above-mentioned problem of mentioning.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a centrifugal draught fan of boiler has solved current centrifugal draught fan of boiler because it is not convenient for remove to increased operating personnel and removed it to the degree of difficulty that needs use the cylinder position, wasted time and energy, be unfavorable for the problem that people used.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a boiler centrifugation draught fan, includes the draught fan body, the bottom fixedly connected with supporter of draught fan body, the through-hole has been seted up in the bottom of supporter through, the inside of supporter is provided with moving mechanism.

The moving mechanism comprises a first bidirectional screw rod, a second bidirectional screw rod, an adjusting motor and a partition plate, wherein the outer surfaces of the first bidirectional screw rod and the second bidirectional screw rod are symmetrically and threadedly connected with moving blocks, a supporting rod penetrates through the top of the partition plate, a lifting mechanism is arranged on the supporting rod, the first bidirectional screw rod is in transmission connection with the second bidirectional screw rod through a transmission assembly, the output end of the adjusting motor is fixedly connected with a driving bevel gear, the outer surface of the first bidirectional screw rod is fixedly connected with a driven bevel gear, and the driving bevel gear is meshed with the driven bevel gear.

Preferably, elevating system includes lifting wheel, elevator and reset spring, lifting wheel fixed connection is in the bottom of bracing piece, elevator fixed connection is in the top of bracing piece, reset spring's top and the bottom fixed connection of elevator.

Preferably, the outer surface of bracing piece is located to the reset spring cover, reset spring's bottom and the top fixed connection of baffle, the piece is placed to the bottom fixedly connected with of supporter inner wall, accommodate motor fixed connection is in the top of placing the piece.

Preferably, the transmission assembly comprises a first belt pulley and a second belt pulley, the first belt pulley and the second belt pulley are in transmission connection through a belt, and the first belt pulley and the second belt pulley are respectively and fixedly connected to the outer surfaces of the first bidirectional screw rod and the second bidirectional screw rod.

Preferably, an inclined plane is arranged on the lifting block, a limiting sliding groove is formed in the inclined plane, and the inner portion of the limiting sliding groove is matched with the outer surface of the moving block.

Preferably, the first and second bidirectional screws are symmetrically arranged in front and back along the inside of the support body.

Advantageous effects

The utility model provides a centrifugal draught fan for boiler. Compared with the prior art, the method has the following beneficial effects:

(1) the centrifugal draught fan for the boiler comprises a moving mechanism, a first bidirectional screw rod, a second bidirectional screw rod, an adjusting motor and a partition plate, wherein the outer surfaces of the first bidirectional screw rod and the second bidirectional screw rod are symmetrically and threadedly connected with moving blocks, a support rod penetrates through the top of the partition plate, a lifting mechanism is arranged on the support rod, the first bidirectional screw rod and the second bidirectional screw rod are in transmission connection through a transmission assembly, the output end of the adjusting motor is fixedly connected with a driving bevel gear, the outer surface of the first bidirectional screw rod is fixedly connected with a driven bevel gear, the driving bevel gear is meshed with the driven bevel gear, and the first bidirectional screw rod, the second bidirectional screw rod, the adjusting motor, the partition plate, the moving blocks, the support rod, the lifting mechanism, the transmission assembly, the driving bevel gear and the driven bevel gear are matched for use, the adjusting motor is used for driving the first bidirectional screw rod and the second bidirectional screw rod to rotate, make the removal of movable block, utilize the movable block to carry out the application of force effect to the elevator for the lifting wheel stretches out the external world and supports the draught fan body, thereby it is convenient to realize removing, has solved current boiler centrifugation draught fan because it is not convenient for remove, thereby has increased operating personnel and has removed the degree of difficulty that needs use the cylinder position with it, wastes time and energy, is unfavorable for the problem that people used.

(2) This boiler centrifugation draught fan through being provided with the inclined plane on the elevator, has seted up spacing spout on the inclined plane, and the inside of spacing spout and the surface looks adaptation of movable block utilize the cooperation of spacing spout and movable block through setting up spacing spout, when the movable block moves, can realize carrying out limiting displacement to the movable block, prevent that the movable block from rotating.

Drawings

FIG. 1 is a front view of the internal structure of the present invention;

fig. 2 is a side view of the internal structure of the support body of the present invention;

fig. 3 is a perspective view of the external structure of the lifting block of the present invention.

In the figure: 1-draught fan body, 2-supporting body, 3-through hole, 4-moving mechanism, 401-first bidirectional screw rod, 402-second bidirectional screw rod, 403-adjusting motor, 404-partition plate, 405-moving block, 406-supporting rod, 407-lifting mechanism, 4071-lifting wheel, 4072-lifting block, 4073-reset spring, 408-transmission component, 4081-first belt pulley, 4082-second belt pulley, 4083-belt, 409-driving bevel gear, 410-driven bevel gear, 5-placing block, 6-bevel and 7-limiting chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a centrifugal draught fan for a boiler comprises a draught fan body 1, wherein the bottom of the draught fan body 1 is fixedly connected with a support body 2, a through hole 3 is formed in the bottom of the support body 2 in a penetrating mode, and a moving mechanism 4 is arranged inside the support body 2; the moving mechanism 4 comprises a first bidirectional screw rod 401, a second bidirectional screw rod 402, an adjusting motor 403 and a partition plate 404, the adjusting motor 403 is a three-phase asynchronous motor and is electrically connected with an external power supply, the first bidirectional screw rod 401 and the second bidirectional screw rod 402 are symmetrically arranged along the inside of the support body 2 in a front-back manner, the outer surfaces of the first bidirectional screw rod 401 and the second bidirectional screw rod 402 are symmetrically and threadedly connected with a moving block 405, a support rod 406 penetrates through the top of the partition plate 404, a lifting mechanism 407 is arranged on the support rod 406, the lifting mechanism 407 comprises a lifting wheel 4071, a lifting block 4072 and a return spring 4073, an inclined plane 6 is arranged on the lifting block 4072, a limit chute 7 is arranged on the inclined plane 6, the inside of the limit chute 7 is matched with the outer surface of the moving block 405, by arranging the limit chute 7, the matching of the limit chute 7 and the moving block 405, the limiting effect on the moving block 405 can be realized, the moving block 405 is prevented from rotating, the reset spring 4073 is sleeved on the outer surface of the supporting rod 406, the bottom end of the reset spring 4073 is fixedly connected with the top of the partition 404, the bottom of the inner wall of the supporting body 2 is fixedly connected with the placing block 5, the adjusting motor 403 is fixedly connected with the top of the placing block 5, the lifting wheel 4071 is fixedly connected with the bottom end of the supporting rod 406, the lifting block 4072 is fixedly connected with the top end of the supporting rod 406, the top end of the reset spring 4073 is fixedly connected with the bottom of the lifting block 4072, the first bidirectional screw 401 is in transmission connection with the second bidirectional screw 402 through the transmission component 408, the transmission component 408 comprises a first belt pulley 4081 and a second belt pulley 4082, the first belt pulley 4081 is in transmission connection with the second belt 4082, the first belt pulley 4081 and the second belt 4082 are respectively and fixedly connected with the outer surfaces of the first bidirectional screw 401 and the second bidirectional screw 402, the output end of the adjusting motor 403 is fixedly connected with a driving bevel gear 409, the outer surface of the first bidirectional screw rod 401 is fixedly connected with a driven bevel gear 410, the driving bevel gear 409 is engaged with the driven bevel gear 410, the first bidirectional screw rod 401, the second bidirectional screw rod 402, the adjusting motor 403, the partition plate 404, the moving block 405, the support rod 406, the lifting mechanism 407, the transmission component 408, the driving bevel gear 409 and the driven bevel gear 410 are used in a matched manner, the adjusting motor 403 is used for driving the first bidirectional screw rod 401 and the second bidirectional screw rod 402 to rotate, so that the moving block 405 moves, the lifting block 4072 is forced by the moving block 405, the lifting wheel 4071 extends out of the outer periphery to support the induced draft fan body 1, and therefore, the convenient and fast movement is realized, the problem that the existing centrifugal induced draft fan for boilers is inconvenient to move is solved, and the difficulty of an operator in moving the centrifugal induced draft fan to a position where an air cylinder needs to use is increased, time and labor are wasted, and the use is not facilitated.

And those not described in detail in this specification are well within the skill of those in the art.

During operation, by turning on the adjusting motor 403, the adjusting motor 403 drives the driving bevel gear 409 to rotate, and by engaging, the driven bevel gear 410 is driven to rotate, so as to drive the first bidirectional screw 401 and the first belt pulley 4081 to rotate, and under the transmission action of the belt 4083, the second belt pulley 4082 is driven to rotate, so as to drive the second bidirectional screw 402 to rotate, so as to drive the moving block 405 on the first bidirectional screw 401 and the second bidirectional screw 402 to move, and at the same time, the moving block 405 moves in the limiting chute 7, by using the matching of the limiting chute 7 and the moving block 405, when the moving block 405 moves, the limiting action can be performed on the moving block 405, so as to prevent the moving block 405 from rotating, and along with the movement of the moving block 405, the moving block 405 can exert a force on the lifting block 4072, so as to make the lifting block 4072 and the supporting rod 406 move downwards, simultaneously, make reset spring 4073 take place the compression, and then the lifting wheel 4071 stretches out the external world of supporter 2 through-hole 3, and then lifting wheel 4071 supports draught fan body 1, thereby it is convenient to realize removing, after the removal is accomplished, reuse adjusting motor 403, adjusting motor 403 pivoted direction is opposite with foretell direction this moment, and then drive movable block 405 and the motion of the above-mentioned opposite direction, along with the motion of movable block 405, movable block 405 gradually loses the forcing action of lifting block 4072, and then under reset spring 4073's effect, realize carrying out the reset action to lifting wheel 4071, and then lifting wheel 4071 enters into the inside of supporter 2 through-hole 3, the completion is accomodate lifting wheel 4071.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A boiler centrifugal induced draft fan, comprising an induced draft fan body (1), characterized in that: a support body (2) is fixedly connected to the bottom of the induced draft fan body (1), and the bottom of the support body (2) penetrates through A through hole (3) is opened, and a moving mechanism (4) is arranged inside the support body (2);

The moving mechanism (4) includes a first bidirectional screw (401), a second bidirectional screw (402), an adjustment motor (403) and a partition plate (404). A moving block (405) is symmetrically threaded on the outer surfaces of the two bidirectional screw rods (402), a support rod (406) runs through the top of the partition plate (404), and a lifting mechanism is arranged on the support rod (406). (407), the first two-way screw (401) and the second two-way screw (402) are previously connected through a transmission assembly (408), and the output end of the regulating motor (403) is fixedly connected with a driving bevel gear ( 409), a driven bevel gear (410) is fixedly connected to the outer surface of the first bidirectional screw (401), and the driving bevel gear (409) meshes with the driven bevel gear (410).

2. A boiler centrifugal induced draft fan according to claim 1, characterized in that: the lifting mechanism (407) comprises a lifting wheel (4071), a lifting block (4072) and a return spring (4073), the lifting wheel (4073) (4071) is fixedly connected to the bottom end of the support rod (406), the lifting block (4072) is fixedly connected to the top end of the support rod (406), and the top of the return spring (4073) is connected to the bottom of the lifting block (4072) Fixed connection.

3. A boiler centrifugal induced draft fan according to claim 2, characterized in that: the return spring (4073) is sleeved on the outer surface of the support rod (406), and the bottom end of the return spring (4073) is connected to the outer surface of the support rod (406). The top of the partition plate (404) is fixedly connected, the bottom of the inner wall of the support body (2) is fixedly connected with a placing block (5), and the adjusting motor (403) is fixedly connected to the top of the placing block (5).

The boiler centrifugal induced draft fan according to claim 1, characterized in that: the transmission assembly (408) comprises a first pulley (4081) and a second pulley (4082), and the first pulley (4081) The first pulley (4081) and the second pulley (4082) are fixedly connected to the first two-way screw (401) and the second two-way screw respectively (402) on the outer surface.

5. A boiler centrifugal induced draft fan according to claim 2, characterized in that: the lifting block (4072) is provided with a slope (6), and a limit chute (7) is set on the slope (6). , the interior of the limit chute (7) is adapted to the outer surface of the moving block (405).

6. A boiler centrifugal induced draft fan according to claim 1, characterized in that: the first bidirectional screw rod (401) and the second bidirectional screw rod (402) are symmetrical along the inside of the support body (2). set up.