Pneumatic mushroom-shaped ventilator

Abstract

The invention relates to the technical field of ventilation, and discloses a pneumatic mushroom-shaped ventilator which comprises a ventilator body, a hood, a reversing valve, a driving air cylinder, a hand wheel, a weather-tight cover, a transmission rod and a position sensor, the weather-tight cover is installed in the hood in an up-and-down opening and closing state through the transmission rod connected with the weather-tight cover, and opening and closing actions are completed through up-and-down movement of the driving air cylinder or the hand wheel. The reversing valve is a manual / automatic switching reversing valve, the driving air cylinder is connected with the reversing valve through a hose, a position sensor corresponding to the wind and rain sealing cover is arranged in the wind cap, and the driving air cylinder and the wind cap are fixed through bolts. Remote automatic opening and closing of the ventilator are achieved through the reversing valve and the driving air cylinder, manual opening and closing of the ventilator are achieved through hand wheel operation under the power-off and gas-off conditions, electric control pneumatic operation and multifunctional manual operation are integrated, opening and closing of the ventilator under the power-on, ventilation, power-off and gas-off conditions can be met, the structure is simple, operation is convenient, and applicability is high.

Description

Technical Field

[0001] The invention relates to a pneumatic mushroom-shaped ventilator, in particular to an electrically controlled pneumatic, multifunctional manual mushroom-shaped ventilator. Background Art

[0002] Mushroom ventilators are a type of ventilation equipment that is widely used on various ships and offshore platforms to improve the air circulation and quality inside enclosed spaces. With the advancement of ship engineering technology, people have higher and higher requirements for the quality of the air environment inside ships. At the same time, people have also put forward higher requirements for the operability of ship ventilation equipment.

[0003] The traditional mushroom-shaped ventilator is composed of a hand wheel, a hood, a screw, a weathertight cover, an indicator rod, a hood, etc. The screw is rotated by manually operating the hand wheel on the top of the hood, and the weathertight cover moves up and down with the rotation of the screw to complete the opening and closing action. This mushroom-shaped ventilator is completely completed by manual operation. On the one hand, it consumes manpower and affects the overall automation level of the ship; on the other hand, in the event of some emergencies, such as the invasion of external harmful gases or a fire in the internal cabin, the mushroom-shaped ventilator cannot be opened and closed in time, which may bring risks to the safety of the ship and personnel. Summary of the invention

[0004] In view of the shortcomings of traditional mushroom-shaped ventilators in actual operation, the present invention provides a pneumatic mushroom-shaped ventilator with a simple structure, reliable operation, and the ability to adapt to various emergencies on ships and complete opening and closing actions in real time, conveniently and safely.

[0005] The technical solution adopted by the present invention is: a pneumatic mushroom-shaped ventilator, including a cylinder, a hood, a reversing valve, a driving cylinder, a handwheel, a screw, a weathertight cover, a transmission rod, a guide block, a slide rail, a guide rod and a position sensor. The weathertight cover is installed in the hood in an up and down opening and closing state through the transmission rod connected thereto. It is characterized in that: the weathertight cover is connected to the driving cylinder and the handwheel through the transmission rod, and the opening and closing action is completed by the up and down movement of the driving cylinder or the handwheel. The air source passes through the reversing valve to the driving cylinder to complete the remote pneumatic opening and closing action of the weathertight cover. If the remote electric control opening and closing system fails, the reversing valve can be driven by the manual operating handle of the reversing valve to realize the pneumatic opening and closing action of the mushroom-shaped ventilator; if the pneumatic opening and closing system fails, the local mechanical opening and closing action can be completed by driving the connected screw rod through the handwheel on the upper part of the hood.

[0006] Preferably, the reversing valve is a manual / automatic switching electromagnetic reversing valve, which is installed and fixed on the outside of the mushroom-shaped ventilation cylinder body at a location that is convenient for operation.

[0007] Preferably, a hose connection is provided between the driving cylinder and the reversing valve, and the hose is connected to the reversing valve from a steel pipe joint extending out from the bottom of the fireproof net.

[0008] Preferably, a position sensor corresponding to the wind and rain-tight cover is provided in the hood to remotely monitor the opening and closing status of the wind and rain-tight cover.

[0009] Preferably, the screw is built-in and is arranged inside the handwheel transmission rod.

[0010] Preferably, the guide block is a wedge-shaped guide block, which fits with the outer wedge-shaped surface of the top of the driving cylinder.

[0011] Preferably, the slide rails are parallel to the center line of the driving cylinder and are symmetrically arranged along both sides of the center line.

[0012] Compared with the traditional mushroom-shaped ventilator, the present invention has the following advantages:

[0013] The purpose of the present invention is to design a new mushroom-shaped ventilator, which can realize both remote automatic opening and closing control and local mechanical manual opening and closing control. The principle is to add a set of driving cylinders on the basis of the traditional mushroom-shaped ventilator, and the driving gas enters the driving cylinder through the reversing valve to drive the weathertight cover to move up and down to realize remote automatic opening and closing, and the screw of the traditional mushroom-shaped ventilator is moved up to the inside of the handwheel transmission rod, and the handwheel is directly turned to make the screw push the driving cylinder body and the weathertight cover to move up and down to realize local mechanical manual opening and closing control. This mushroom-shaped ventilator can meet the technical requirements of modern ships, is easy to realize automatic control, has a simple structure, reliable operation, and quick response. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The present invention is a schematic structural diagram of a pneumatic mushroom-shaped ventilator.

[0016] Figure 2 This is an enlarged view of point A of a pneumatic mushroom-shaped ventilator of the present invention.

[0017] Figure 3 This is an enlarged view of point B of a pneumatic mushroom-shaped ventilator according to the present invention.

[0018] Figure 4 This is an enlarged view of point C of a pneumatic mushroom-shaped ventilator according to the present invention.

[0019] Figure 5 It is a top view partial cross-section DD schematic diagram of a pneumatic mushroom-shaped ventilator of the present invention.

[0020] Markings in the figure: 1. Reversing valve; 2. Connecting hose; 3. Weathertight cover; 4. Sealing packing; 5. Driving cylinder; 6. Air hood; 7. Guide block; 8. Screw; 9. Handwheel transmission rod; 10. Handwheel; 11. Pressure cover; 12. Packing; 13. Indicator rod; 14. Slide rail; 15. Pin; 16. Guide rod; 17. Position sensor; 18. Fireproof and insect-proof net; 19. Guide sleeve; 20. Air duct. DETAILED DESCRIPTION

[0022] To further illustrate the technical solution of the pneumatic mushroom-shaped ventilator of the present invention, the specific implementation of the pneumatic mushroom-shaped ventilator of the present invention is described in conjunction with the accompanying drawings as follows:

[0023] like Figure 1-5 The technical solution of the pneumatic mushroom-shaped ventilator shown is a pneumatic mushroom-shaped ventilator, including a driving cylinder 5, the top of the cylinder body of the driving cylinder 5 is rigidly connected to the screw rod 8, the rod extends to the bottom of the guide sleeve 18, and the weathertight cover 3 is fixed to the guide rod 16 by a pin 15. During remote pneumatic operation, the top of the cylinder body of the driving cylinder 5 is tightly fitted with the wedge-shaped surface of the guide block 7 and the top plate of the wind cap 6, and the driving gas controls the gas flow direction through the reversing valve 1, and drives the guide rod 16 to move up and down through the driving cylinder 5, thereby completing the automatic opening and closing action of the weathertight cover 3, and remotely monitoring the opening and closing state of the weathertight cover 3 through the position sensor 17; during local manual pneumatic operation, the driving gas flow direction is controlled by manually operating the conversion handle of the reversing valve 1 to make the driving cylinder 5 move, and the opening and closing state of the weathertight cover 3 is remotely monitored through the position sensor 17, and the opening and closing state of the weathertight cover 3 can also be locally monitored through the indicator rod 13; during local mechanical manual operation, the handwheel 10 is rotated to drive the handwheel transmission rod 9 to rotate, and the rotation of the handwheel transmission rod 9 drives the screw rod 8 together with the driving cylinder 5 and the weathertight cover 3 to move up and down as a whole along the slide rail 14, thereby completing the manual mechanical opening and closing action of the weathertight cover 3.

[0024] Preferably, the reversing valve 1 is a manual / automatic switching electromagnetic reversing valve, which is fixed and installed at a convenient place outside the mushroom-shaped ventilation duct 20. When the power is on, the reversing valve 1 is used to realize remote automatic control, and the solenoid valve of the reversing valve 1 is operated by the remote control panel to control the flow direction of the gas entering the driving cylinder 5; when the power is off, the reversing valve 1 is used to realize local manual control, and the handle of the reversing valve 1 is operated to control the flow direction of the gas entering the driving cylinder 5.

[0025] Preferably, a connecting hose 2 is provided between the driving cylinder 5 and the reversing valve 1 , and the connecting hose 2 enables the driving cylinder 5 to move freely up and down with the screw rod 8 when the local machine is manually controlled.

[0026] Preferably, the position sensor 17 is arranged inside the hood 6 at a position adjacent to the closing position of the weathertight cover 3 to remotely monitor the opening and closing status of the weathertight cover 3 .

[0027] Preferably, the screw rod 8 is built-in, disposed inside the handwheel transmission rod 9, and matches the internal thread of the handwheel transmission rod 9. The screw rod 8 is driven by the internal thread of the handwheel transmission rod 9 to move up and down.

[0028] Preferably, the guide block 7 is a wedge-shaped guide block, which is welded and fixed to the lower part of the top plate of the hood 6 with the axial center line of the driving cylinder 5 as the center, and fits with the outer wedge-shaped surface at the top of the driving cylinder 5 to guide the smooth return of the driving cylinder 5 body during manual control of the local machine.

[0029] Preferably, the slide rail 14 is parallel to the center line of the driving cylinder and is symmetrically arranged on both sides of the center line, cooperating with the guide sleeve 19 so that the driving cylinder 5 body can move freely up and down along the slide rail 14 when the local machine is manually controlled.

[0030] Preferably, in order to facilitate the later maintenance of the driving cylinder 5, the weathertight cover 3 and the guide rod 16 are configured to be detachable and fixed in the middle with a pin 15.

[0031] The present invention is not limited to the exact construction that has been described above and shown in the drawings, and various modifications and changes may be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. A pneumatic mushroom-shaped ventilator, comprising a cylinder, a hood, a reversing valve, a driving cylinder, a hand wheel, a screw, a weathertight cover, a transmission rod, a guide block, a slide rail, a guide rod and a position sensor. The weathertight cover is installed in the hood in an up and down opening and closing state through the guide rod connected thereto. Features: The weathertight cover is connected to the driving cylinder and the handwheel via a guide rod, and the opening and closing action is completed by the up and down movement of the driving cylinder or the handwheel. The air source passes through the reversing valve to the driving cylinder to complete the remote pneumatic opening and closing action of the weathertight cover. If the remote pneumatic opening and closing system fails, the local mechanical opening and closing action can be completed through the handwheel and the connected screw.

2. A pneumatic mushroom-shaped ventilator according to claim 1, Its characteristics are: The reversing valve is a manual / automatic switching electromagnetic reversing valve.

3. The pneumatic mushroom-shaped ventilator according to claim 1, Its characteristics are: A hose connection is provided between the driving cylinder and the reversing valve.

4. The pneumatic mushroom-shaped ventilator according to claim 1, Its characteristics are: A position sensor corresponding to the weathertight cover is arranged inside the hood.

5. The pneumatic mushroom-shaped ventilator according to claim 1, Its characteristics are: The screw rod is a built-in screw rod, which matches the internal thread of the hand wheel transmission rod.

6. The pneumatic mushroom-shaped ventilator according to claim 1, Its characteristics are: The guide block is a wedge-shaped guide block, which fits with the outer wedge-shaped surface of the top of the driving cylinder.

7. The pneumatic mushroom-shaped ventilator according to claim 1, Its characteristics are: The slide rails are parallel to the center line of the driving cylinder and are symmetrically arranged along both sides of the center line.

8. The pneumatic mushroom-shaped ventilator according to claim 1, Its characteristics are: The weathertight cover is fixed to the guide rod by pins.

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