Ventilation device capable of being quickly folded

Abstract

The utility model discloses a ventilation device capable of being folded quickly, which comprises a top plate, a support ring, a ventilation hood and a ventilation pipe, the top plate is provided with a middle circular hole and a ventilation hole outside the circular hole, the ventilation hood is connected below the top plate, the ventilation hole is positioned inside a connecting line of the ventilation hood and the top plate, and the top plate is connected with the support ring. The ventilation holes are connected with the ventilation pipe, the lower portion of the ventilation hood is connected with a supporting ring, and the ventilation hood is telescopic. According to the utility model, the acid mist outlet can be effectively and completely sealed, so that unorganized smoke overflow caused by untight sealing is avoided; the internal supporting structure solves the problem that the unorganized flue gas collection effect is influenced by the deformation of the ventilation hood caused by the formation of negative pressure; the successful selection of an acid-resistant light material of the ventilation hood effectively solves the problems of corrosion of acid mist and aging caused by outdoor exposure; the structure is simple, and personnel operation is simple and light.

Description

Technical Field

[0001] The utility model relates to the technical field of sulfuric acid production, in particular to a ventilation device which can be folded quickly. Background Art

[0002] According to the increasing environmental protection requirements, all unorganized flue gas must be fully recovered. Combined with the existing sulfuric acid loading process of the factory, it is placed from the storage tank to the underground tank, and then pumped to the high-level tank through the underground tank. The high-level tank releases sulfuric acid through the acid discharge pipe and then releases sulfuric acid through each acid loading port to the tank truck; there is a certain safety distance between the acid discharge port and the tank truck, and the acid needs to be discharged to the tank truck through the connecting pipe. Due to the height difference and the certain temperature of sulfuric acid itself, a large amount of sulfuric acid is put into the tank truck to form a positive pressure, and fine acid mist is ejected. Therefore, there are two overflow points of unorganized flue gas during the tank truck loading process; one is at the acid discharge port and the connecting pipe, and the other is the interface between the connecting pipe and the tank truck; these two points need to be sealed at the same time to completely collect and treat the unorganized flue gas. In addition, the sales volume of sulfuric acid is large, the loading frequency is high, and the average loading time is short. How to make the operation light, fast, economical and durable is also a problem that needs to be considered; therefore, it is necessary to design a convenient and fast device to prevent sulfuric acid from escaping. Utility Model Content

[0003] The utility model aims to provide a fast-foldable ventilation device to solve the problem of unorganized overflow during the process of loading sulfuric acid in existing tank trucks.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A quickly foldable ventilation device comprises a top plate 1, a support ring 2, a ventilation hood 3, and a ventilation pipe 5. The top plate 1 is provided with a central circular hole and ventilation holes outside the circular hole. The ventilation hood 3 is connected below the top plate 1. The ventilation holes are located inside the connecting line between the ventilation hood 3 and the top plate 1. The ventilation holes are connected to the ventilation pipe 5. The support ring 2 is connected below the ventilation hood 3. The ventilation hood 3 is retractable.

[0006] Furthermore, at least two fixing bolt holes 6 are provided between the circular hole and the circle where the ventilation holes are located on the top plate 1 .

[0007] Furthermore, a plurality of fixing rings 4 are provided on the left and right sides of the ventilation hood 3 .

[0008] Furthermore, a pull rope 7 is provided in the fixing ring 4 , and one end of the pull rope 7 is connected to the supporting ring 2 .

[0009] Furthermore, it also includes a fixed lifting roller, and the pull rope 7 moves through the fixed lifting roller.

[0010] Furthermore, the material of the ventilation hood 3 is resistant to sulfuric acid corrosion.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. It can effectively seal all acid mist outlets to avoid the overflow of unorganized smoke caused by loose sealing.

[0013] 2. The internal support structure prevents the ventilation hood from deforming due to the formation of negative pressure, which affects the collection effect of unorganized smoke.

[0014] 3. The successful selection of acid-resistant and lightweight materials for the ventilation hood effectively solves the corrosion caused by acid mist and aging caused by outdoor exposure.

[0015] 4. Simple structure, easy and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of a quickly foldable ventilation device.

[0017] In the figure: 1. Top plate, 2. Support ring, 3. Ventilation hood, 4. Fixing ring, 5. Ventilation pipe, 6. Fixing bolt hole, 7. Pull rope. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0019] See also Figure 1 The utility model provides a ventilation device that can be quickly folded, including a top plate 1, a support ring 2, a ventilation hood 3, and a ventilation pipe 5. A central circular hole and ventilation holes outside the circular hole are set on the top plate 1, and at least two fixing bolt holes 6 are set between the circular hole and the circle where the ventilation hole is located on the top plate 1, and four are generally set. The circular hole is connected to the acid discharge pipeline, and the top plate 1 is fixed to the flange of the acid discharge pipeline through the fixing bolt holes 6. The ventilation hole is connected to the ventilation pipe 5, and the ventilation pipe 5 is the discharging port of the dissipated acid mist and is connected to the acid mist treatment device. The ventilation hood 3 is connected below the top plate 1, and the connecting line between the ventilation hood 3 and the top plate 1 is located outside the ventilation hole, so that the ventilation hole is connected to the space inside the ventilation hood 3; the ventilation hood 3 is retractable and made of acid corrosion-resistant material, and the support ring 2 is connected below the ventilation hood 3, and the support ring 2 drives the ventilation hood 3 to completely cover the acid discharge port and the connecting pipe, and the connecting pipe and the tank car interface to prevent the acid mist from escaping. A plurality of fixing rings 4 are arranged on the left and right sides of the ventilation hood 3 , and a pull rope 7 is arranged in the fixing ring 4 . One end of the pull rope 7 is connected to the supporting ring 2 , and the ventilation hood 3 is extended or retracted by pulling the pull rope 7 .

[0020] In addition, in order to facilitate the retraction of the ventilation hood 3, a fixed lifting roller is generally provided above the ventilation device to pull the pull rope 7 to move up and down through the fixed lifting roller.

[0021] During use, before acid is released, the connecting pipe is connected to the acid release port and the tank car interface, and then the drawstring 7 is loosened, and the drawstring 7 is moved by fixed lifting roller skating, and the ventilation hood 3 and the support ring 2 are put down, and the ventilation hood 3 covers the acid release port and the connecting pipe, the connecting pipe and the tank car interface completely, and the ventilation pipe 5 is connected with the acid mist collection pipeline. After acid is released, pull up the drawstring 7 first, and the drawstring 7 moves upward by fixed lifting roller skating, drives the ventilation hood 3 and the support ring 2 to move upward, and the ventilation hood 3 folds up under the effect of the support ring 2, and then puts away the connecting pipe, and acid is released and ends.

[0022] The utility model has the advantages of being able to effectively seal all acid mist outlets to avoid the overflow of unorganized smoke caused by loose sealing; the internal supporting structure eliminates the deformation of the ventilation hood caused by the formation of negative pressure, which affects the collection effect of unorganized smoke; the successful selection of acid-resistant and lightweight materials for the ventilation hood effectively solves the corrosion of acid mist and aging caused by outdoor exposure; the structure is simple, and the operation of personnel is simple and light.

[0023] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rapidly foldable ventilation device, characterized in that: The invention comprises a top plate (1), a support ring (2), a ventilation hood (3), and a ventilation pipe (5); the top plate (1) is provided with a central circular hole and ventilation holes outside the circular hole; the ventilation hood (3) is connected below the top plate (1); the ventilation holes are located inside the connection line between the ventilation hood (3) and the top plate (1); the ventilation holes are connected to the ventilation pipe (5); the support ring (2) is connected below the ventilation hood (3); and the ventilation hood (3) is retractable.

2. The rapidly foldable ventilation device according to claim 1, characterized in that: At least two fixing bolt holes (6) are arranged between the circular hole and the circle where the ventilation hole is located on the top plate (1).

3. The rapidly foldable ventilation device according to claim 1, characterized in that: A plurality of fixing rings (4) are arranged on the left and right sides of the ventilation hood (3).

4. The rapidly foldable ventilation device according to claim 3, characterized in that: A pull rope (7) is arranged in the fixing ring (4), and one end of the pull rope (7) is connected to the supporting ring (2).

5. The rapidly foldable ventilation device according to claim 4, characterized in that: It also includes a fixed lifting wheel pulley, through which the pull rope (7) moves.

6. The rapidly foldable ventilation device according to claim 1, characterized in that: The material of the ventilation hood (3) is resistant to corrosion by sulfuric acid.

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