Emergency ventilation device for chemical production workshop

Abstract

The utility model relates to the field of emergency ventilation of chemical production workshops, in particular to an emergency ventilation device of a chemical production workshop. Comprising a moving mechanism composed of a threaded shaft, a pulley sliding rail limiting mechanism and the like, and an air exhaust power mechanism composed of a transmission shaft, a supporting shaft and the like. Compared with the prior art, the device has the advantages that under the mutual cooperation of parts and mechanisms such as the threaded shaft, the transmission shaft, the canvas telescopic belt and the like, a movable air exhaust system is formed, the air exhaust opening can be close to the leakage position at the first time through the movable air exhaust end, hazardous gas can be intensively extracted and exhausted, the hazardous gas is prevented from spreading and diffusing, and the service life of the hazardous gas is prolonged. And the safety guarantee of production personnel in a workshop under the condition is improved.

Description

Technical Field

[0001] The utility model relates to the field of emergency ventilation of chemical production workshops, in particular to an emergency ventilation device for chemical production workshops. Background Art

[0002] During chemical production, raw materials and production processes contain some gases, some of which are harmful to the human body or flammable and explosive. The production workshop is a relatively closed environment. When dangerous gases leak, they will accumulate indoors and spread, creating a danger.

[0003] In order to prevent the accumulation of dangerous gases indoors and threaten the safety of production personnel, ventilation devices need to be installed in the workshop. The traditional workshop ventilation measure is to install exhaust fans in several fixed positions. If it is better, it will be equipped with powerful exhaust fans. However, these exhaust ports are fixed in the building and may be far away from the location where the random leakage occurs. The dangerous gases cannot be extracted and discharged in the first time, which will cause a certain amount of spread and cause danger. The space through which the airflow passes will also be contaminated by the dangerous gases. The safety of people near the airflow path cannot be guaranteed. Therefore, an emergency ventilation device for chemical production workshops is needed. Utility Model Content

[0004] 1. Technical Problems Solved

[0005] The technical problem to be solved by the utility model is that the air outlets of common workshop ventilation equipment are fixed. When dangerous chemical gas leaks at any place, it cannot be guaranteed that the dangerous gas will be discharged to the outside in time, and there are still certain safety hazards.

[0006] 2. Technical Solution

[0007] In order to solve the above technical problems, the technical solution provided by the utility model is: an emergency ventilation device for a chemical production workshop, comprising a mounting frame, an exhaust duct is connected to the mounting frame, a driven shaft is rotatably connected to one end of the exhaust duct, and a plurality of fan blades are connected to the driven shaft.

[0008] A threaded shaft is rotatably connected in the mounting frame, a driving block with an internal threaded structure is connected to the threaded shaft, a support frame matching the exhaust duct is connected to one side of the driving block, the support frame is rotatably connected to a support shaft downward, a transmission shaft is rotatably connected in the mounting frame, a bushing with multiple sliders is connected to the transmission shaft, a worm gear transmission mechanism is commonly connected between the bushing and the support shaft, and a chain groove sprocket transmission mechanism is commonly connected between the support shaft and the bottom end of the driven shaft.

[0009] Furthermore, a No. 1 motor cooperating with the threaded shaft is connected to one side of the mounting frame to provide power for the rotation of the threaded shaft, and a No. 2 motor cooperating with the transmission shaft is connected to the mounting frame below the No. 1 motor to provide power for the rotation of the transmission shaft.

[0010] Furthermore, the driving block is connected downwardly with a plurality of pulleys, and the mounting frame is located below the threaded shaft and is connected with a plurality of limiting slide rails that cooperate with the pulleys. Through the mutual cooperation between the pulleys and the limiting slide rails, limiting conditions are provided for the driving block to move on the threaded shaft.

[0011] Furthermore, a movable elbow cooperating with the support frame is connected to one end of the exhaust pipe, and a canvas telescopic belt cooperating with the movable elbow is connected to the exhaust pipe to facilitate the movable elbow part with the exhaust mechanism to move along with the driving block.

[0012] Furthermore, the transmission shaft is connected to a plurality of limiting sliding grooves matched with the shaft sleeve to provide limiting conditions for the movement and rotation of the shaft sleeve.

[0013] 3. Beneficial Effects

[0014] The advantage of the utility model over the prior art is that the threaded shaft, the transmission shaft, the canvas telescopic belt and other components and mechanisms cooperate with each other to form a mobile exhaust system. Through the mobile exhaust end, the exhaust port can be brought close to the leakage point at the first time to centrally extract and discharge dangerous gases to prevent them from spreading, thereby improving the safety of production personnel in the workshop under such circumstances. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the appearance of an emergency ventilation device for a chemical production workshop of the utility model. Figure 1 .

[0016] Figure 2 This is a schematic diagram of the appearance of an emergency ventilation device for a chemical production workshop of the utility model. Figure 2 .

[0017] Figure 3 yes Figure 1 Schematic diagram of the local structure.

[0018] Figure 4 yes Figure 2 Schematic diagram of the local structure.

[0019] As shown in the figure: 1. Mounting frame, 2. Threaded shaft, 3. Motor No. 1, 4. Driving block, 5. Limiting slide rail, 6. Pulley, 7. Support frame, 8. Support shaft, 9. Worm gear transmission mechanism, 10. Transmission shaft, 11. Motor No. 2, 12. Limiting slide groove, 13. Bushing, 14. Chain groove chain transmission mechanism, 15. Driven shaft, 16. Fan blades, 17. Moving elbow, 18. Canvas telescopic belt, 19. Exhaust duct. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] Embodiment 1

[0022] Combined with Figure 1-3 In order to solve the above technical problems, the technical solution provided by the utility model is: an emergency ventilation device for a chemical production workshop, comprising a mounting frame 1, an exhaust pipe 19 is connected to the mounting frame 1, a driven shaft 15 is rotatably connected to one end of the exhaust pipe 19, a plurality of fan blades 16 are connected to the driven shaft 15, a movable elbow 17 matched with a support frame 7 is connected to one end of the exhaust pipe 19, a canvas telescopic belt 18 matched with the movable elbow 17 is connected to the exhaust pipe 19, so that the movable elbow 17 with the exhaust mechanism can move along with the driving block 4.

[0023] Through the movable elbow 17, it is possible to accurately approach and reach the top of the chemical production location where the leakage occurs at any time. The driven shaft 15 drives the fan blades 16 to rotate, which can provide a suction effect and discharge the leaked dangerous chemical gas out of the workshop through the exhaust pipe 19.

[0024] Embodiment 2

[0025] Combined with Figure 1-4A threaded shaft 2 is rotatably connected inside the mounting frame 1, and a No. 1 motor 3 that matches the threaded shaft 2 is connected to one side of the mounting frame 1 to provide power for the rotation of the threaded shaft 2. A driving block 4 with an internal thread structure is connected to the threaded shaft 2, and a plurality of pulleys 6 are connected downward to the driving block 4. The mounting frame 1 is located below the threaded shaft 2 and is connected to a plurality of limiting slide rails 5 that match the pulleys 6. Through the mutual cooperation between the pulleys 6 and the limiting slide rails 5, a limiting condition is provided for the driving block 4 when it moves on the threaded shaft 2. A support frame 7 that matches the exhaust pipe 19 is connected to one side of the driving block 4, and the support frame 7 rotates downward A supporting shaft 8 is dynamically connected, and a transmission shaft 10 is rotatably connected in the mounting frame 1. The mounting frame 1 is located below the No. 1 motor 3 and is connected with a No. 2 motor 11 that cooperates with the transmission shaft 10 to provide power for the rotation of the transmission shaft 10. A shaft sleeve 13 with multiple sliders is connected to the transmission shaft 10. A plurality of limiting grooves 12 that cooperate with the shaft sleeve 13 are connected to the transmission shaft 10 to provide limiting conditions for the movement and rotation of the shaft sleeve 13. A worm gear transmission mechanism 9 is commonly connected between the shaft sleeve 13 and the support shaft 8, and a chain groove sprocket transmission mechanism is commonly connected between the support shaft 8 and the bottom end of the driven shaft 15.

[0026] By rotating the threaded shaft 2, the movable end of the exhaust pipe 19 is provided with the function of moving to a side below the mounting frame 1. By rotating the transmission shaft 10, the support shaft 8 is driven to rotate under the action of the worm gear transmission mechanism 9, and under the action of the chain groove chain transmission mechanism 14, the driven shaft 15 also rotates accordingly, thereby starting the exhaust function.

[0027] During the specific implementation of the utility model, when the device is used to ventilate a chemical production workshop, the device is installed in the airspace above the workshop, generally under the ceiling, and the area below it overlaps with chemical production equipment and storage places that are prone to gas leakage. When a dangerous gas leaks somewhere covered by the device, the internal threaded shaft 2 of the device rotates, and under the drive block 4, the mobile end head used for exhaust pipe air extraction moves to the top of the leak, and rotates through the transmission shaft 10, indirectly driving the driven shaft 15 and the fan blades 16 in the mobile end head to rotate, thereby effectively pumping the leaked gas into the exhaust pipe 19, and further exhausting it to the outdoors or the corresponding discharge place through the exhaust pipe 19, thereby effectively ventilating the room after the dangerous chemical gas leaks, quickly exhausting the dangerous gas from the room, and preventing it from spreading in the workshop.

[0028] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An emergency ventilation device for a chemical production workshop, comprising a mounting frame (1), an exhaust pipe (19) being connected to the mounting frame (1), a driven shaft (15) being rotatably connected to one end of the exhaust pipe (19), a plurality of fan blades (16) being connected to the driven shaft (15), characterized in that: A threaded shaft (2) is rotatably connected inside the mounting frame (1), a driving block (4) with an internal thread structure is connected to the threaded shaft (2), a support frame (7) matched with an exhaust pipe (19) is connected to one side of the driving block (4), the support frame (7) is rotatably connected downwardly to a support shaft (8), a transmission shaft (10) is rotatably connected inside the mounting frame (1), a shaft sleeve (13) with a plurality of sliders is connected to the transmission shaft (10), a worm gear transmission mechanism (9) is commonly connected between the shaft sleeve (13) and the support shaft (8), and a chain groove sprocket transmission mechanism is commonly connected between the support shaft (8) and the bottom end of the driven shaft (15).

2. According to claim 1, an emergency ventilation device for a chemical production workshop is characterized in that: A first motor (3) matched with the threaded shaft (2) is connected to one side of the mounting frame (1), and a second motor (11) matched with the transmission shaft (10) is connected to the mounting frame (1) below the first motor (3).

3. According to claim 1, an emergency ventilation device for a chemical production workshop is characterized in that: The driving block (4) is connected downwardly with a plurality of pulleys (6), and the mounting frame (1) is located below the threaded shaft (2) and is connected with a plurality of limiting slide rails (5) that match the pulleys (6).

4. The emergency ventilation device for a chemical production workshop according to claim 1, characterized in that: One end of the exhaust pipe (19) is connected to a movable elbow (17) that matches the support frame (7), and the exhaust pipe (19) is connected to a canvas telescopic belt (18) that matches the movable elbow (17).

5. The emergency ventilation device for a chemical production workshop according to claim 1, characterized in that: The transmission shaft (10) is connected to a plurality of limiting sliding grooves (12) that match the shaft sleeve (13).

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