Marine ventilator mounting structure capable of being opened and closed at low floor height

Abstract

The utility model relates to a marine ventilator mounting structure with low-floor height opening and closing operation, which comprises a weather tight cover and a hand wheel, the hand wheel comprises an inner wheel and an outer wheel, the diameter of the inner wheel is smaller than that of the weather tight cover, the outer part of the inner wheel is connected with a plurality of radial spokes with equal length, and the tail ends of the spokes are welded with circular operating parts; the diameter of the circular operating part is equal to, slightly larger than or slightly smaller than that of the weather tight cover; and the interlayer height of the deck in a space for mounting a marine ventilator between the upper deck and the lower deck is less than 2.5 m. A plurality of radial spokes with the same length are additionally arranged outside the hand wheel, and a circular operation part is welded at the tail ends of the spokes. Through the size design of the spokes and the circular operation part, a sailor can easily grasp the circular operation part, rotate the circular operation part and drive the hand wheel to move in a narrow space, and the opening and closing functions of the ventilation barrel are achieved.

Description

Technical Field

[0001] The utility model relates to a ventilator, in particular to a marine ventilator installation structure capable of opening and closing operations at high strata, belonging to the technical field of marine equipment. Background Art

[0002] A Type C ventilator, defined in the national standard CB / T295-2000, is an externally opened and closed ventilator equipped with an axial flow fan. It is suitable for installation on natural and mechanical ventilation systems on the open decks of various ships for ventilation purposes. This ventilator is designed to improve the efficiency of natural ventilation. By utilizing the principle that the pressure on the side of the vent cap facing the wind is increased, and that the air velocity outside the vent cap is greater than the air velocity inside the vent cap, the vent cap is designed to supply or draw air, thereby achieving the purpose of exhausting or supplying air. The opening and closing principle of a Type C ventilator relies primarily on an external opening and closing mechanism and is typically equipped with a weathertight cover and handwheel. When ventilation is required, the weathertight cover can be opened by turning the handwheel, allowing air to circulate freely. To close the ventilator to prevent the ingress of rain or seawater, the handwheel is turned again, and the weathertight cover is tightly closed, ensuring a tight seal.

[0003] The diameter of the handwheel on the weathertight cover of existing C-type ventilators is usually designed to be significantly smaller than the diameter of the weathertight cover itself. When the deck height is low, the operator has difficulty reaching over and grasping the handwheel due to the narrow top space, making it difficult to open and close the C-type ventilator. Summary of the Invention

[0004] The purpose of the utility model is to provide a marine ventilator installation structure with low-level high opening and closing operations, so that the crew can easily grasp the circular operating part in a small space, rotate the circular operating part, drive the hand wheel to move, and realize the opening and closing function of the ventilator.

[0005] The utility model adopts the following technical solutions:

[0006] A low-rise high-opening and closing operating structure for a marine ventilator is provided, comprising a weathertight cover and a handwheel, wherein the handwheel comprises an inner wheel and an outer wheel, the diameter of the inner wheel being smaller than the diameter of the weathertight cover, a plurality of radial spokes of equal length being connected to the outside of the inner wheel, and circular operating components being welded to the ends of the spokes; the diameter of the circular operating component being equal to, slightly larger than, or slightly smaller than the diameter of the weathertight cover; the deck height within the space for installing the marine ventilator between the upper and lower decks being less than 2.5 meters; the diameter of the weathertight cover being greater than 1.4 meters; and the height of the marine ventilator being greater than 1.8 meters.

[0007] Preferably, the spokes have an angle that slopes downward from the inside to the outside.

[0008] Preferably, the diameter of the circular operating member is equal to the diameter of the weathertight cover.

[0009] Preferably, the marine ventilator is arranged close to the bulkhead.

[0010] Preferably, the marine ventilator is a C-type ventilator defined in the national standard CB / T295-2000.

[0011] Preferably, the inner wheel is fixed to the spokes by welding.

[0012] The beneficial effect of this utility model is that it improves the opening and closing function structure of C-type marine ventilators by adding a number of equal-length radial spokes to the exterior of the handwheel and welding a circular operating portion to the end of the spokes. The dimensions of the spokes and the circular operating portion are designed so that the crew can easily grasp the circular operating portion in a small space, rotate the circular operating portion, and drive the handwheel to open and close the ventilator. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front sectional view of an existing C-type marine ventilator.

[0014] Figure 2 It is a top view of an existing C-type marine ventilator.

[0015] Figure 3 It is a front cross-sectional view of a C-type marine ventilator in one embodiment of the present utility model.

[0016] Figure 4 yes Figure 3 Top view of .

[0017] Figure 5 It is a schematic diagram of the opening and closing operation of the existing marine ventilator.

[0018] Figure 6 It is a schematic diagram of the opening and closing operation of the marine ventilator installation structure with low-rise and high opening and closing operations of the utility model. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1 (comparative example):

[0021] See also Figure 4 According to the conventional design of existing marine C-type ventilators, the diameter of the handwheel at the top is significantly smaller than the diameter of the weathertight cover. For most deck heights of around 3 meters, there is ample headroom, allowing operators to climb onto the C-type ventilator and turn the handwheel to open and close the weathertight cover. However, for deck heights below 2.5 meters, the limited headroom makes it difficult for operators to reach the handwheel, making it difficult to open and close the C-type ventilator.

[0022] The structure of the C-type ventilator corresponding to this embodiment can be found in the attached Figure 1 and attached Figure 2 .

[0023] Example 2:

[0024] See also Figure 3 、 4 6. A ship ventilator installation structure with low-rise opening and closing operations, comprising a weathertight cover and a handwheel, wherein the handwheel comprises an inner wheel and an outer wheel, the diameter of the inner wheel being smaller than the diameter of the weathertight cover, a number of radial spokes of equal length being welded on the outside of the inner wheel, and a circular operating component being welded at the end of the spoke; the diameter of the circular operating component being equal to, slightly larger than, or slightly smaller than the diameter of the weathertight cover; the deck height in the space for installing the ship ventilator between the upper and lower decks being less than 2.5 meters; the diameter of the weathertight cover being greater than 1.4 meters; and the height of the ship ventilator being greater than 1.8 meters.

[0025] In this embodiment, as an optional solution, see Figure 6 The spokes have an angle that is inclined downward from the inside to the outside.

[0026] In this embodiment, see Figure 3 , the diameter of the circular operating part is equal to the diameter of the weathertight cover.

[0027] In this embodiment, see Figure 3 The marine ventilator is arranged close to the bulkhead.

[0028] In this embodiment, the marine ventilator is a C-type ventilator defined in the national standard CB / T295-2000.

[0029] This new design improves the opening and closing mechanism of a C-type marine ventilator. Several radial spokes of equal length are added to the exterior of the handwheel, with a circular operating element welded to the ends of the spokes. The dimensions of the spokes and the circular operating element are designed so that crew members can easily grasp the circular operating element in a confined space. Rotating the circular operating element drives the handwheel to open and close the ventilator.

[0030] This new model solves the problem of C-type ventilators being unable to be opened and closed when arranged at low floor heights. It is easy to use and does not change the opening and closing logic of the ventilators, making it easier for crew members to understand and use. It also has a simple structure, is easy to weld and manufacture, requires no subsequent maintenance, and has low modification costs.

[0031] The above are preferred embodiments of the present invention. Ordinary technicians in this field can also make their own changes or improvements on this basis. Without departing from the overall concept of the present invention, these changes or improvements should fall within the scope of protection required by the present invention.

Claims

1. A low-rise high-opening and closing operation marine ventilator installation structure, including a weathertight cover and a hand wheel, characterized by: The hand wheel comprises an inner wheel and an outer wheel, wherein the diameter of the inner wheel is smaller than the diameter of the weathertight cover, Connecting a plurality of radial spokes of equal length to the outside of the inner wheel, and welding circular operating parts to the ends of the spokes; the diameter of the circular operating part is equal to, slightly larger than, or slightly smaller than the diameter of the weathertight cover; The height of the deck between the upper and lower decks in the space for installing marine ventilators is less than 2.5 meters; the diameter of the weathertight cover is greater than 1.4 meters; the height of the marine ventilator is greater than 1.8 meters.

2. The low-rise high-opening and closing marine ventilator installation structure according to claim 1, characterized in that: The spokes have an angle that is inclined downward from the inside to the outside.

3. The low-rise high-opening and closing marine ventilator installation structure according to claim 1, characterized in that: The diameter of the circular operating member is equal to the diameter of the weathertight cover.

4. The low-rise high-opening and closing marine ventilator installation structure according to claim 1 is characterized in that: The marine ventilator is arranged close to the bulkhead.

5. The low-rise high-opening and closing marine ventilator installation structure according to claim 1 is characterized in that: The marine ventilator is a C-type ventilator defined in the national standard CB / T295-2000.

6. The low-rise, high-opening and closing marine ventilator installation structure according to claim 1, characterized in that: The inner wheel is fixed to the spokes by welding.

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