Detachable ventilating and filtering device for ventilating mast

Abstract

The utility model relates to the field of mast pipe filtration, and discloses a detachable ventilation mast ventilation filtering device which comprises a ventilation mast pipe, the ventilation mast pipe is in a gooseneck shape, an air outlet of the ventilation mast pipe faces downwards, a filter is arranged on the inner side of the air outlet of the ventilation mast pipe, and the filter comprises a lower pipe, an upper pipe, a supporting frame and a filter screen. The bottom of the lower pipe is connected with the bottom of the inner wall of the ventilation mast pipe, the caliber of the upper portion of the lower pipe is smaller than that of the lower portion, and the upper pipe is fixedly connected with the bottom of the upper pipe. The top of the upper pipe is provided with a filter screen, and the bottom edge of the filter screen is fixedly connected with four fixing pipe elastic pieces. According to the utility model, the inner support cross-shaped symmetrical structure is adopted, and the nut is rotated, so that the end part of the sleeve pushes the fixed pipe elastic sheet against the inner wall of the upper pipe, and the filter screen is fastened in the upper pipe, so that the filter screen can be conveniently disassembled and assembled.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mast pipe filtering field, concretely to detachable breathable mast breathable filter device. BACKGROUND

[0002] LNG breathable mast is a kind of LNG liquid cargo tank breather, when liquid cargo tank is loaded, cabin pressure rises, when pressure is too high, breathable mast pipe can release pressure, and excess gas is discharged from cabin, these gases are usually inert gas or flammable gas, and breathable mast discharges gas to high point away from deck surface.

[0003] Since cabin is flammable gas, foreign matter and bird are prevented from entering cabin, need to increase fireproof filter screen, and current breathable filter screen installation needs to be fixed and installed in the form of welding flange at the tail end of elbow pipe, is difficult to disassemble and replace, and time and material are consumed. CONTENT OF THE UTILITY MODEL

[0004] In order to overcome the above-mentioned insufficient, the utility model provides a detachable breathable mast breathable filter device.

[0005] The utility model adopts the technical scheme that:

[0006] A detachable breathable mast breathable filter device, including breathable mast pipe, breathable mast pipe is goose neck and gas outlet is downward, and the inboard side of the gas outlet of breathable mast pipe has filter, and the filter includes lower pipe, upper pipe, support frame and filter screen, the bottom of lower pipe is connected with the bottom of inner wall of breathable mast pipe, the upper portion of lower pipe is reduced than lower portion, the upper portion of lower pipe is fixedly connected with the bottom of upper pipe, and lower pipe is communicated with upper pipe, the inner wall top of upper pipe has filter screen, the bottom edge of filter screen is fixedly connected with four fixed pipe spring sheets, four fixed pipe spring sheets are evenly distributed on the bottom edge of filter screen, and fixed pipe spring sheet is attached to the inner wall of upper pipe, the inside of upper pipe has support frame, support frame is cross-shaped, four ends of support frame are fixedly connected with screw rod, the end outer wall of screw rod is slidably sleeved with sleeve pipe, one end of sleeve pipe is fixedly connected with nut towards support frame, nut is threadedly sleeved with screw rod, the other end of sleeve pipe is abutted with fixed pipe spring sheet, and the other end of sleeve pipe is abutted with fixed pipe spring sheet in the inner wall of upper pipe.

[0007] The utility model has the advantages of:

[0008] The utility model adopts inner support cross-symmetrical structure, rotates nut, and makes the end of sleeve pipe abut fixed pipe spring sheet in the inner wall of upper pipe, realizes that filter screen is fastened in the inside of upper pipe, so that filter screen can be conveniently disassembled and installed. DRAWING EXPLANATION

[0009] Figure 1 It is the structure schematic diagram of the utility model;

[0010] Figure 2 It is Figure 1Part structural schematic view enlarged view;

[0011] Figure 3 Is the structure schematic view of the support frame of the utility model;

[0012] Figure 4 Is Figure 3 The side view sectional view of

[0013] Figure 5 Is Figure 2 The filter screen enlarged view of

[0014] Figure 6 Is Figure 5 The plan view of

[0015] Figure 7 Is Figure 6 The bottom view of

[0016] In all drawings, the specific reference signs are: 1, breathable mast pipe; 2, filter; 3, filter screen; 4, support frame; 5, screw rod; 6, sleeve; 7, nut; 21, lower pipe; 22, upper pipe; 8, fixed pipe spring. Specific implementation

[0017] As Figures 1-7 Shown: a detachable breathable mast breathable filter device, including breathable mast pipe 1, the breathable mast pipe 1 is goose neck shape and the air outlet is downward, the air outlet inner side of the breathable mast pipe 1 has filter 2, filter 2 includes lower pipe 21, upper pipe 22, support frame 4 and filter screen 3; the bottom of lower pipe 21 is connected to the inner wall bottom of the breathable mast pipe 1, the upper part of lower pipe 21 is smaller than the lower part, the lower pipe 21 upper part is fixedly connected to the bottom of upper pipe 22, and the lower pipe 21 is communicated with the upper pipe 22; the inner wall top of upper pipe 22 has filter screen 3, and the bottom edge of filter screen 3 is fixedly connected with four fixed pipe springs 8; the four fixed pipe springs 8 are evenly distributed on the bottom edge of filter screen 3, and the fixed pipe spring 8 is attached to the inner wall of upper pipe 22; the inside of upper pipe 22 has support frame 4, and the support frame 4 is cross-shaped, the four ends of support frame 4 are fixedly connected with screw rod 5, the end outer wall of screw rod 5 is slidably sleeved with sleeve 6, one end of sleeve 6 towards support frame 4 is fixedly connected with nut 7, nut 7 is threadedly sleeved with screw rod 5, and the other end of sleeve 6 abuts against fixed pipe spring 8, and the other end of sleeve 6 abuts against fixed pipe spring 8 in the inner wall of upper pipe 22.

[0018] The inner wall of upper pipe 22 is slidably attached to the edge of filter screen 3. Rotate the nut 7, so that the end of the sleeve 6 abuts against the fixed pipe spring 8 in the inner wall of the upper pipe 22, and the filter screen 3 is tightly fixed in the inner wall of the upper pipe 22, so that the filter screen 3 can be easily disassembled and installed.

Claims

1. A detachable breathable mast air-permeable filter device, characterized in that, The utility model provides a venting mast (1) is provided with a filter (2) on the inside of the air outlet of the venting mast (1), the filter (2) comprises a lower pipe (21), an upper pipe (22), a support frame (4) and a filter screen (3), the bottom of the lower pipe (21) is connected with the bottom of the inner wall of the venting mast (1), the upper portion of the lower pipe (21) is smaller than the lower portion in caliber, the upper portion of the lower pipe (21) is fixedly connected with the bottom of the upper pipe (22), and the lower pipe (21) is communicated with the upper pipe (22), the inner wall top of the upper pipe (22) is provided with the filter screen (3), the bottom edge of the filter screen (3) is fixedly connected with four fixed pipe spring sheets (8), the four fixed pipe spring sheets (8) are uniformly distributed on the bottom edge of the filter screen (3), and the fixed pipe spring sheet (8) is attached to the inner wall of the upper pipe (22), the inside of the upper pipe (22) is provided with the support frame (4), the support frame (4) is cross-shaped, the four ends of the support frame (4) are fixedly connected with screw rods (5), the end outer wall of the screw rod (5) is slidably sleeved with a sleeve pipe (6), one end of the sleeve pipe (6) towards the support frame (4) is fixedly connected with a nut (7), the nut (7) is threadedly sleeved with the screw rod (5), the other end of the sleeve pipe (6) is abuttingly connected with the fixed pipe spring sheet (8), and the other end of the sleeve pipe (6) abuttingly connects the fixed pipe spring sheet (8) with the inner wall of the upper pipe (22).

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