Air door structure of heating furnace air blower

Abstract

The utility model relates to the technical field of air door structures, and particularly discloses an air door structure of a heating furnace blower, which comprises an air door main body, a rotating shaft and an oil filling pipe. A connecting part is arranged in the middle of the air door body, a connecting hole is formed in the connecting part, the rotating shaft can be inserted into the connecting hole, the air door body can rotate around the connecting part, the oil injection pipe is arranged on the air door body and provided with an oil inlet end and an oil outlet end, the oil inlet end of the oil injection pipe extends out of the outer side of the air door body, and the oil outlet end of the oil injection pipe extends out of the air door body. The oil outlet end of the oil injection pipe is connected with the connecting part and communicated with the connecting hole, so that oil can enter the oil injection pipe from the oil inlet end and enter the connecting hole from the oil outlet end, namely, a gap between the rotating shaft and the inner wall of the connecting hole is filled with the oil, the lubricating effect on the rotating shaft can be achieved, jamming of the rotating shaft is avoided, meanwhile, external impurities such as moisture and dust can be isolated, and the service life of the rotating shaft is prolonged. The rotating shaft and the inner wall of the connecting hole are prevented from rusting.

Description

Technical Field

[0001] The utility model relates to the technical field of damper structures, and particularly refers to a damper structure for a blower of a heating furnace. Background Art

[0002] The circular petal type blower inlet regulating damper is commonly used for adjusting the air volume and air pressure of the combustion air of the heating furnace in the refining production device, so as to make the combustion air pressure and flow meet the production requirements. However, due to rainwater or humid air entering the damper, and since it doesn't need to be adjusted for a long time, the mating parts between the damper central body, the rotating shaft and the rotating shaft sleeve are prone to rust, resulting in adjustment jamming. Eventually, the adjusting ring and the adjusting plate are deformed, making it impossible to open and close the damper flexibly, leading to frequent maintenance or replacement of a new damper. Summary of the Invention

[0003] The utility model is made in consideration of the above problems, and the purpose of the utility model is to provide a damper structure for a blower of a heating furnace, which can prevent rust in the gap part of the connection between the rotating shaft and the damper main body, and at the same time can avoid rust and jamming of the rotating shaft and the rotating shaft sleeve.

[0004] To achieve the above purpose, the utility model provides a damper structure for a blower of a heating furnace, including a damper main body, a rotating shaft and an oil injection pipe. A connection part is provided in the middle of the damper main body, and a connection hole is provided on the connection part. The rotating shaft can be inserted into the connection hole, and the damper main body can rotate around the connection part;

[0005] The oil injection pipe is arranged on the damper main body, and an oil inlet end and an oil outlet end are provided on the oil injection pipe. The oil inlet end of the oil injection pipe extends outside the damper main body, and the oil outlet end of the oil injection pipe is connected to the connection part and communicated with the connection hole.

[0006] According to the above-mentioned damper structure for a blower of a heating furnace, it further includes a rotating shaft sleeve, and the rotating shaft sleeve is located in the connection hole and can cover the outside of the rotating shaft.

[0007] According to the above-mentioned damper structure for a blower of a heating furnace, it further includes a protective sleeve, and the protective sleeve is located between the rotating shaft sleeve and the rotating shaft, and the protective sleeve is made of a soft material.

[0008] According to the above-mentioned damper structure for a blower of a heating furnace, the damper main body is integrally cylindrical, the center line of the connection hole and the center line of the damper main body are on the same straight line, and the oil injection pipe is arranged radially on the end face of the damper main body along the damper main body.

[0009] According to the above-mentioned damper structure for a blower of a heating furnace, a lubricating chamber is formed by the inner wall of the connection hole and the rotating shaft, and the oil outlet end of the oil injection pipe is communicated with the lubricating chamber.

[0010] For the air damper structure of a heating furnace blower as described above, both ends of the air damper main body are concaved inward to form installation cavities, the oil injection pipe is arranged in the installation cavities, and the oil inlet end of the oil injection pipe can pass through the side wall of the air damper main body and be located outside the air damper main body.

[0011] For the air damper structure of a heating furnace blower as described above, it further includes strengthening rods. A plurality of the strengthening rods are arranged at intervals in the installation cavities. One end of the strengthening rod is connected to the connecting part, and the other end of the strengthening rod is connected to the inner wall of the air damper main body.

[0012] The utility model has the following beneficial effects: An oil injection pipe is added, which can supply oil to the gap between the rotating shaft and the connecting part, can not only provide a lubricating effect, but also play a sealing role, avoiding the entry of dust and other impurities, and preventing rust from occurring between the rotation and the connecting part. At the same time, a protective sleeve made of soft material is provided between the rotating shaft and the rotating shaft sleeve, which can convert the hard connection between the rotating shaft and the rotating shaft sleeve into a soft connection, avoiding jamming caused by wear during rotation. Description of the Drawings

[0013] Figure 1 is an assembly schematic diagram of the air damper main body and the oil injection pipe of the embodiment;

[0014] Figure 2 is an assembly schematic diagram of the rotating shaft, the rotating shaft sleeve and the protective sleeve of the embodiment.

[0015] In the figure:

[0016] 1. Air damper main body; 2. Rotating shaft; 3. Oil injection pipe; 4. Connecting part; 5. Connecting hole; 6. Rotating shaft sleeve; 7. Protective sleeve; 8. Strengthening rod. Detailed Embodiments

[0017] The following are specific embodiments of the utility model in combination with the drawings, and the technical solutions of the utility model will be further described, but the utility model is not limited to these embodiments.

[0018] As Figure 1-2 shown, an air damper structure of a heating furnace blower includes an air damper main body 1, a rotating shaft 2 and an oil injection pipe 3.

[0019] Among them, a connecting portion 4 is provided in the middle of the damper body 1. A connecting hole 5 is provided on the connecting portion 4. The rotating shaft 2 can be inserted into the connecting hole 5. The damper body 1 can rotate around the connecting portion 4. The oil injection pipe 3 is arranged on the damper body 1, and an oil inlet end and an oil outlet end are provided on the oil injection pipe 3. The oil inlet end of the oil injection pipe 3 extends outside the damper body 1. The oil outlet end of the oil injection pipe 3 is connected to the connecting portion 4 and communicates with the connecting hole 5. Then, the oil can enter the oil injection pipe 3 from the oil inlet end and enter the connecting hole 5 from the oil outlet end, that is, fill the gap between the rotating shaft 2 and the inner wall of the connecting hole 5, which can play a lubricating role for the rotating shaft 2, avoid its jamming, and at the same time can block external moisture and dust and other impurities, and avoid rusting of the inner wall of the rotating shaft 2 and the connecting hole 5.

[0020] To prevent the rotation shaft 2 from shifting, a shaft sleeve 6 is further included. The shaft sleeve 6 is located in the connecting hole 5 and can cover the outside of the rotating shaft 2. The shaft sleeve 6 can limit the shift of the rotating shaft 2. In this embodiment, a protective sleeve 7 is further included. The protective sleeve 7 is located between the shaft sleeve 6 and the rotating shaft 2, and the protective sleeve 7 is made of a soft material. Initially, the rotating shaft 2 is directly and rigidly connected to the shaft sleeve 6. After adding the protective sleeve 7 made of a soft material, the rotating shaft 2 is softly connected to the protective sleeve 7, which can eliminate the problem of rust and jamming between the rotating shaft 2 and the shaft sleeve 6. Of course, in this embodiment, the protective sleeve 7 is made of PVC or copper material.

[0021] Specifically, the damper body 1 is integrally cylindrical. The center line of the connecting hole 5 and the center line of the damper body 1 are on the same straight line, that is, the connecting portion 4 is the central body of the damper body 1. The oil injection pipe 3 is arranged radially on the end face of the damper body 1 along the damper body 1. At the same time, the rotating shaft 2 and the inner wall of the connecting hole 5 enclose a lubricating chamber, and the oil outlet end of the oil injection pipe 3 communicates with the lubricating chamber.

[0022] Among them, both ends of the damper body 1 are recessed inward to form installation cavities. The oil injection pipe 3 is arranged in the installation cavities, and the oil inlet end of the oil injection pipe 3 can pass through the side wall of the damper body 1 and be located outside the damper body 1. The installation space for the oil injection pipe 3 is created through the installation cavities. To improve the strength of the installation cavities, a reinforcing rod 8 is further included. A plurality of reinforcing rods 8 are arranged at intervals in the installation cavities. One end of the reinforcing rod 8 is connected to the connecting portion 4, and the other end of the reinforcing rod 8 is connected to the inner wall of the damper body 1.

[0023] The technical solutions of the present invention have been elaborated in detail above in conjunction with the accompanying drawings. The described embodiments are used to help understand the idea of the present invention. The specific embodiments described herein are only examples of the spirit of the present invention. Those skilled in the technical field to which the present invention belongs can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture (as shown in the attached drawings). If this specific posture changes, the directional indications will also change accordingly.

[0025] In addition, in the present utility model, descriptions such as "first", "second", "one", etc. are only for descriptive purposes and should not be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0026] In the present utility model, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] In addition, the technical solutions between various embodiments of the present utility model can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

Claims

1. A damper structure of a heating furnace blower, characterized in that: It comprises a damper body, a rotating shaft and an oil filling pipe, wherein a connecting part is provided in the middle of the damper body, a connecting hole is provided on the connecting part, the rotating shaft can be inserted into the connecting hole, and the damper body can rotate around the connecting part; The oil filling pipe is arranged on the damper body, and is provided with an oil inlet end and an oil outlet end. The oil inlet end of the oil filling pipe extends out of the outside of the damper body, and the oil outlet end of the oil filling pipe is connected to the connecting portion and communicated with the connecting hole.

2. The damper structure of a heating furnace blower according to claim 1, characterized in that: It also includes a rotating shaft sleeve, which is located in the connecting hole and can be covered on the outer side of the rotating shaft.

3. The damper structure of a heating furnace blower according to claim 2, characterized in that: It also includes a protective sleeve, which is located between the rotating shaft sleeve and the rotating shaft and is made of soft material.

4. The damper structure of a heating furnace blower according to claim 1, characterized in that: The damper body is cylindrical as a whole, the center line of the connecting hole and the center line of the damper body are located on the same straight line, and the oil filling pipe is arranged on the end surface of the damper body along the radial direction of the damper body.

5. The damper structure of a heating furnace blower according to claim 4, characterized in that: The rotating shaft and the inner wall of the connecting hole together form a lubrication chamber, and the oil outlet end of the oil filling pipe is communicated with the lubrication chamber.

6. The damper structure of a heating furnace blower according to claim 4, characterized in that: Both ends of the damper body are concave to form a mounting cavity, the oil filling pipe is arranged in the mounting cavity, and the oil inlet end of the oil filling pipe can pass through the side wall of the damper body and be located outside the damper body.

7. The damper structure of a heating furnace blower according to claim 6, characterized in that: It also includes a reinforcing rod, a plurality of which are arranged at intervals in the installation cavity, one end of the reinforcing rod is connected to the connecting portion, and the other end of the reinforcing rod is connected to the inner wall of the damper body.

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