Manufacturing method of silencer ventilating tube for ship

Technical realization elements:

4. The purpose of the present utility model is to provide a noise-absorbing ventilator for ships to solve the above-mentioned problems in the background art.

5. In order to achieve the above objective, the present utility model provides the following technical solutions: a sound-absorbing ventilating cylinder for ships, comprising an outer cylinder, the bottom of the outer cylinder wall is fixedly sleeved with a connecting flange, and the outer cylinder The upper ends of the left and right sides of the inner wall are symmetrically provided with vertical sliding mechanisms. The two sets of vertical sliding mechanisms are close to each other and fixed with an inner cylinder penetrating the top position of the outer cylinder. The inner wall of the inner cylinder is in the middle The sound-absorbing wave ring is fixedly installed at the position, the lower end positions of the left and right side walls of the outer cylinder inner cavity are both provided with fixed vertical plates, and the two sets of fixed vertical plates are set at the lower positions of the two vertical sliding mechanisms. The upper ends of the fixed vertical plates close to one side of the side walls are symmetrically welded with elastic mechanisms, and the bottom positions of the two sets of elastic mechanisms are fixedly installed with ventilation fans.

6. Preferably, in the above-mentioned silencer ventilating cylinder for ships, the vertical sliding mechanism includes a sliding block and a sliding groove. The group of sliding grooves are arranged at the upper positions of the two sets of fixed vertical plates, and the inner cavities of the two groups of sliding grooves are provided with sliding blocks respectively fixed to the bottom positions of the left and right side walls of the inner cylinder.

7. Based on the above technical features, it is convenient to adjust the height of the sound-absorbing ventilating cylinder for ships.

8. Preferably, in the above-mentioned muffler ventilator for ships, the elastic mechanism includes a metal rod and a telescopic spring. The ends of the metal rods close to each other are sleeved with metal pipes. The bottom positions of the two sets of metal pipes are fixed to the left and right ends of the top of the ventilation fan. The two sets of metal pipes are close to each other. The inner walls are fixedly installed with telescopic springs respectively fixed with two sets of metal rods.

9. Based on the above technical features, it is convenient to reduce the noise of the sound-absorbing ventilating cylinder for ships.

10. Preferably, in the above-mentioned sound-absorbing ventilating cylinder for ships, the upper and lower ends of the two sets of fixed vertical plates that are far away from each other are provided with second fixed screw holes symmetrically, and the lower ends of the left and right side walls of the outer cylinder The first fixing bolts that penetrate the outer cylinder and are threadedly connected with the second fixing screw holes are arranged in symmetrical positions.

11. Based on the above technical features, it is easy to disassemble and replace the ventilation fan.

12. Preferably, in the above-mentioned silencer ventilating cylinder for ships, the lower ends of the left and right side walls of the inner cylinder body far away from each other are provided with first fixed screw holes at symmetrical and equal intervals. Both sides are symmetrically welded with fixed side plates, and the two sets of fixed side plates are provided with second fixing bolts penetrating through the fixed side plates and threadedly connected with the first fixing screw holes.

13. Based on the above technical features, it is convenient to adjust the height of the sound-absorbing ventilator for ships.

14. Preferably, in the aforementioned sound-absorbing ventilating cylinder for ships, a mounting ring is sleeved at the top position of the inner cylinder, and a dust-proof and insect-proof net is fixedly installed at the top position of the inner cavity of the mounting ring.

15. Based on the above technical features, it is easy to prevent dust and insects.

16. Preferably, in the above-mentioned sound-absorbing ventilating cylinder for ships, connecting ropes are fixedly installed on the left and right side walls of the mounting ring, hooks are fixed at the bottom positions of the two sets of connecting ropes, and the inner cylinder body The upper ends of the left and right side walls are symmetrically welded with hanging ring racks that are matched with the hooks, and the two groups of hanging ring racks are arranged above the two groups of first fixing screw holes.

17. Based on the above technical features, it is easy to disassemble and replace the dust-proof and insect-proof net.

18. Compared with the prior art, the beneficial effects of this utility model are:

19. First, through the design of this technical solution, the vibration generated during the working process of the ventilation fan is transmitted to the metal pipe and produces a certain displacement. Because the metal rod and the fixed vertical plate are fixed on the inner wall of the outer cylinder, the When the metal pipe is displaced, it drives the two sets of telescopic springs to produce elastic deformation and absorb the vibration force, thereby reducing noise. When a large amount of outside air enters the inner cavity of the outer cylinder through the inner cylinder, it is small under the action of the concave-convex structure on the surface of the sound-absorbing wave ring. Wind noise, thereby improving the sound-absorbing performance of the sound-absorbing ventilating tube for ships;

20. Second, through the design of this technical solution, when the outside air enters through the top position of the inner cylinder, the dust and insects are filtered out under the action of the dust-proof and insect-proof net to prevent insects from entering, and the hook is separated from the hanging ring frame and then upwards. Lifting the installation ring drives the separation between the dust-proof and insect-proof net and the inner cylinder to facilitate disassembly and replacement of the dust-proof and insect-proof net.

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