High-temperature transmission sealing device and induced draft fan
By designing a high-temperature transmission sealing device in the induced fan, using high-pressure gas and heat-resistant sealing materials, the problem of smoke leakage is solved, the environment and equipment are protected, and maintenance costs and workload are reduced.
Patent Information
- Application Number
- CN202421110629.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The original air induction fan baffle shaft seal consists of a pack seal and a flange. When the pack wears, a large amount of flue gas and sulfide leaks, affecting the environmental sanitation and corroding the equipment. The sealing pack and insulation need to be replaced regularly. Aluminum leather, a lot of workload.
A high-temperature transmission sealing device is designed, including a first sealing seat, a pull rod fastener, a sealing gasket and an air interface. By introducing high-pressure gas into the sealing chamber, a positive pressure is formed to prevent the smoke from leaking. The sealing gasket uses heat-resistant materials such as Fluoroelastomer, tie rod fasteners and sealing fillers further enhance the sealing effect.
Effectively prevent smoke leakage, protect environmental sanitation and equipment, reduce the need for replacement of materials and repair labor costs, and improve the service life of the equipment.
Smart Images
Figure CN222229433U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of induced draft fans, in particular to a high-temperature transmission sealing device and an induced draft fan. Background Art
[0002] The original induced draft fan baffle shaft seal is composed of packing seal and flange. When the packing is worn, a large amount of smoke and sulfide leak out, which not only affects environmental hygiene, but also corrodes equipment and thermal insulation aluminum. Therefore, it is necessary to regularly replace the sealing packing and thermal insulation aluminum, and each time a scaffold needs to be set up for operation, resulting in a large workload. Utility Model Content
[0003] Based on this, it is necessary to provide a high-temperature transmission sealing device and an induced draft fan, which aims to solve the problem that the original induced draft fan baffle shaft seal is composed of packing seal and flange. When the packing is worn, a large amount of smoke and sulfide leak out, which not only affects environmental hygiene, but also corrodes equipment and thermal insulation aluminum skin. Therefore, it is necessary to regularly replace the sealing packing and thermal insulation aluminum skin, and each time a rack needs to be set up for operation, resulting in a large workload. Technical problems.
[0004] In the first aspect, the utility model provides a high-temperature transmission sealing device, which includes a first sealing seat, a tie rod fastener, a sealing gasket and an air interface, wherein the first sealing seat is installed on the baffle shaft, the tie rod fastener passes through the first sealing seat and is connected to an external component, the sealing gasket is arranged between the first sealing seat and the baffle shaft, a sealing cavity is provided between the first sealing seat and the baffle shaft, the air interface is installed on the first sealing seat and is connected to the sealing cavity, and an external air source is connected to the air interface to allow high-pressure gas to flow from the air interface into the sealing cavity.
[0005] In one embodiment, the high-temperature transmission sealing device includes an air source main pipe and an air source branch pipe, the air source main pipe is connected to the air source branch pipe, and the air interface is connected to the air source main pipe or the air source branch pipe.
[0006] In one embodiment, the pull rod fastener includes a rod body and a fastening portion, the first sealing seat includes a seat body and a mounting plate connected to the seat body, the rod body is connected to the external component and passes through the mounting plate, and the fastening portion is threadedly connected to the rod body and abuts against the mounting plate.
[0007] In one embodiment, two pull rod fasteners are provided and symmetrically arranged on both sides of the first sealing seat.
[0008] In one embodiment, the high temperature transmission sealing device further includes a sealing filler installed in the sealing cavity.
[0009] In one embodiment, the high-temperature transmission sealing device further comprises a pressure cover, which is mounted on the first sealing seat and is used to prevent the sealing packing from escaping.
[0010] In one embodiment, the high-temperature transmission sealing device further includes a mounting member, wherein the mounting member passes through the gland and is connected to the first sealing seat.
[0011] In one of the embodiments, the high temperature transmission sealing device further comprises a flexible sealing body, wherein the flexible sealing body is located at the gland and mounted on the baffle shaft.
[0012] In one embodiment, the high temperature transmission sealing device further comprises a second sealing seat, and the second sealing seat mounts the flexible sealing body on the baffle shaft.
[0013] In a second aspect, the utility model further provides an induced draft fan, which includes the high-temperature transmission sealing device of any of the above embodiments.
[0014] Implementing the embodiments of the present utility model will have the following beneficial effects:
[0015] The utility model adopts a high-temperature transmission sealing device and an induced draft fan, wherein the first sealing seat of the high-temperature transmission sealing device is installed on the baffle shaft, the pull rod fastener passes through the first sealing seat and is connected to the external component, the sealing point is arranged between the first sealing seat and the baffle shaft, a sealing cavity is arranged between the first sealing seat and the baffle shaft, the air interface is installed on the first sealing seat and is connected to the sealing cavity, the external air source is connected to the air interface so that high-pressure gas flows from the air interface into the sealing cavity, the first sealing seat and the sealing gasket are arranged, and the high-pressure gas flowing from the external compressed air into the sealing cavity from the air interface is blocked and sealed to form a positive pressure to achieve the effect of no smoke leakage, thereby protecting environmental hygiene and equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] in:
[0018] Figure 1 Detailed description of the invention Figure 4 is a cross-sectional view of a high temperature transmission sealing device in one embodiment.
[0019] Reference numerals:
[0020] 1. First sealing seat; 11. Seat body; 12. Mounting plate;
[0021] 2. Tie rod fastener; 21. Rod body; 22. Fastening part;
[0022] 3. Sealing gasket; 4. Air interface; 5. Sealing filler; 6. Pressure cover; 7. Mounting piece; 8. Flexible sealing body; 9. Second sealing seat; 100. Baffle shaft; 200. External component; 300. Sealing chamber. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0025] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.
[0026] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.
[0027] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.
[0028] Please combine Figure 1 Now, the high temperature transmission sealing device provided by the utility model is described. The high temperature transmission sealing device is used in the induced draft fan.
[0029] The high-temperature transmission sealing device includes a first sealing seat 1, a tie rod fastener 2, a sealing gasket 3 and an air interface 4. The first sealing seat 1 is installed on the baffle shaft 100. The tie rod fastener 2 passes through the first sealing seat 1 and is connected to the external component 200. The sealing gasket 3 is arranged between the first sealing seat 1 and the baffle shaft 100. A sealing cavity 300 is provided between the first sealing seat 1 and the baffle shaft 100. The air interface 4 is installed on the first sealing seat 1 and is connected to the sealing cavity 300. The external air source is connected to the air interface 4 to allow high-pressure gas to flow from the air interface 4 into the sealing cavity 300.
[0030] Specifically, a high temperature transmission sealing device is installed on the baffle shaft 100 outside the original induced draft fan outlet, and compressed air is connected through the air interface 4 to ensure that positive pressure is formed at the leak point to achieve a sealing effect. The first sealing seat 1 and the baffle shaft 100 are installed in a half-type assembly manner.
[0031] It can be understood that the first sealing seat 1 of the high-temperature transmission sealing device is installed on the baffle shaft 100, the pull rod fastener 2 passes through the first sealing seat 1 and is connected to the external component 200, the sealing point is arranged between the first sealing seat 1 and the baffle shaft 100, and a sealing cavity 300 is arranged between the first sealing seat 1 and the baffle shaft 100, the air interface 4 is installed on the first sealing seat 1 and is connected to the sealing cavity 300, the external air source is connected to the air interface 4 to allow high-pressure gas to flow from the air interface 4 into the sealing cavity 300, and the leaked flue gas medium is blocked and sealed by setting the first sealing seat 1 and the sealing gasket 3, as well as the high-pressure gas from the external compressed air flowing into the sealing cavity 300 from the air interface 4, to form a positive pressure to achieve the effect of no smoke leakage, thereby protecting environmental hygiene and equipment.
[0032] It should be noted that the sealing pressure of the external compressed air connected to the air interface 4 is 1.6Mpa, which is 0.25Mpa higher than the exhaust gas pressure at the exhaust fan outlet. No exhaust gas leakage can reduce environmental pollution and save heat energy; it can save the material cost of replacing insulation and aluminum skin each time, and save a lot of labor cost of repairing leaks.
[0033] In this embodiment, the sealing gasket 3 is a structural member made of fluororubber. Fluororubber refers to a synthetic polymer elastomer containing fluorine atoms on the carbon atoms of the main chain or side chain. The introduction of fluorine atoms gives the rubber excellent heat resistance, oxidation resistance, oil resistance, corrosion resistance and atmospheric aging resistance. The sealing gasket 3 serves to seal the plane of the shaft seat of the baffle shaft 100.
[0034] Furthermore, the high temperature transmission sealing device includes an air source mother pipe and an air source branch pipe, the air source mother pipe is connected to the air source branch pipe, and the air interface 4 is connected to the air source mother pipe or the air source branch pipe. The external air source device is connected to the air source mother pipe, so that the compressed air can enter the air source mother pipe and the air source branch pipe, and the air interface 4 is connected to the air source mother pipe or the air source branch pipe, so that the compressed high-pressure gas enters the sealing cavity 300 from the air interface 4, thereby forming a positive pressure at the leak point, and the smoke does not leak out, which has a sealing effect.
[0035] Furthermore, the pull rod fastener 2 includes a rod body 21 and a fastening portion 22, the first sealing seat 1 includes a seat body 11, and a mounting plate 12 connected to the seat body 11, the rod body 21 is connected to the external component 200 and passes through the mounting plate 12, the fastening portion 22 is threadedly connected to the rod body 21, and abuts against the mounting plate 12. Specifically, the fastening portion 22 can be a bolt, and the external component 200 is a baffle door housing. The first sealing seat 1 contacts the external component 200, the fastening portion 22 is threadedly connected to the rod body 21, the fastening portion 22 is rotated, and the rotating portion abuts against the mounting plate 12, so that the mounting plate 12 drives the seat body 11 to abut against the external component 200, so that the first sealing seat 1 can be fixed to the external component 200.
[0036] Furthermore, two pull rod fasteners 2 are provided and symmetrically arranged on both sides of the first sealing seat 1. In this way, the installation stability of the first sealing seat 1 can be improved.
[0037] In one embodiment, if Figure 1 As shown, the high temperature transmission sealing device further comprises a sealing filler 5, and the sealing filler 5 is installed in the sealing cavity 300. In this way, the sealing effect can be further achieved.
[0038] In this embodiment, the high temperature transmission sealing device further comprises a gland 6, which is mounted on the first sealing seat 1 and is used to prevent the sealing packing 5 from escaping. By providing the gland 6, the gland 6 can prevent the sealing packing 5 from escaping from the sealing cavity 300, thereby ensuring the sealing effect of the sealing packing 5.
[0039] Further, the high temperature transmission sealing device further comprises a mounting member 7, which penetrates the gland 6 and is connected to the first sealing seat 1. Specifically, the mounting member 7 may be a bolt. The mounting member 7 penetrates the gland 6 and is threadedly connected to the first sealing seat 1, so that the gland 6 can be stably mounted on the first sealing seat 1.
[0040] In one embodiment, continue as Figure 1 As shown, the high temperature transmission sealing device further comprises a flexible sealing body 8, which is located at the gland 6 and mounted on the baffle shaft 100. By providing the flexible sealing body 8, the gland 6 and the baffle shaft 100 can be sealed.
[0041] In this embodiment, the high temperature transmission sealing device further comprises a second sealing seat 9, and the second sealing seat 9 mounts the flexible sealing body 8 on the baffle shaft 100. By providing the second sealing seat 9, the flexible sealing body 8 can be stably fixed on the baffle shaft 100.
[0042] The utility model also provides an induced draft fan, which comprises the high-temperature transmission sealing device of any of the above embodiments.
[0043] It can be understood that the induced draft fan of the utility model uses the above-mentioned high-temperature transmission sealing device, so that the first sealing seat 1 of the high-temperature transmission sealing device is installed on the baffle shaft 100, the pull rod fastener 2 passes through the first sealing seat 1 and is connected to the external component 200, the sealing point is arranged between the first sealing seat 1 and the baffle shaft 100, and a sealing cavity 300 is arranged between the first sealing seat 1 and the baffle shaft 100, the air interface 4 is installed on the first sealing seat 1 and is connected to the sealing cavity 300, the external air source is connected to the air interface 4, so that high-pressure gas flows from the air interface 4 into the sealing cavity 300, and the leaked flue gas medium is blocked and sealed by setting the first sealing seat 1 and the sealing gasket 3, and the high-pressure gas of compressed air flowing from the air interface 4 into the sealing cavity 300, so as to form a positive pressure to achieve the effect of no smoke leakage, thereby protecting environmental hygiene and equipment.
[0044] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0045] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope covered by the present invention.
Claims
1. A high temperature transmission sealing device, characterized in that: The high-temperature transmission sealing device includes a first sealing seat, a tie rod fastener, a sealing gasket and an air interface. The first sealing seat is installed on the baffle shaft. The tie rod fastener passes through the first sealing seat and is connected to an external component. The sealing gasket is arranged between the first sealing seat and the baffle shaft. A sealing cavity is provided between the first sealing seat and the baffle shaft. The air interface is installed on the first sealing seat and is connected to the sealing cavity. An external air source is connected to the air interface to allow high-pressure gas to flow from the air interface into the sealing cavity.
2. The high temperature transmission sealing device according to claim 1, characterized in that: The high-temperature transmission sealing device comprises an air source main pipe and an air source branch pipe, the air source main pipe is connected to the air source branch pipe, and the air interface is connected to the air source main pipe or the air source branch pipe.
3. The high temperature transmission sealing device according to claim 1, characterized in that: The pull rod fastener includes a rod body and a fastening portion, the first sealing seat includes a seat body and a mounting plate connected to the seat body, the rod body is connected to the external component and passes through the mounting plate, and the fastening portion is threadedly connected to the rod body and abuts against the mounting plate.
4. The high temperature transmission sealing device according to claim 3, characterized in that: The pull rod fasteners are provided with two and are symmetrically arranged on both sides of the first sealing seat.
5. The high temperature transmission sealing device according to claim 1, characterized in that: The high-temperature transmission sealing device also includes a sealing filler installed in the sealing cavity.
6. The high temperature transmission sealing device according to claim 5, characterized in that: The high-temperature transmission sealing device also includes a pressure cover, which is installed on the first sealing seat and is used to prevent the sealing packing from escaping.
7. The high temperature transmission sealing device according to claim 6, characterized in that: The high-temperature transmission sealing device also includes a mounting member, which passes through the gland and is connected to the first sealing seat.
8. The high temperature transmission sealing device according to claim 6, characterized in that: The high-temperature transmission sealing device also includes a flexible sealing body, which is located at the gland and installed on the baffle shaft.
9. The high temperature transmission sealing device according to claim 8, characterized in that: The high temperature transmission sealing device further comprises a second sealing seat, and the second sealing seat mounts the flexible sealing body on the baffle shaft.
10. An induced draft fan, characterized in that: The induced draft fan comprises a high temperature transmission sealing device as described in any one of claims 1-9.