Quick-opening marine gate valve

Abstract

An inner cavity of a valve body is provided with a wedge surface sealed with flashboards, a left flashboard and a right flashboard are installed on a rack shaft and are simultaneously contacted with the wedge surface of the inner cavity of the valve body, a spring is arranged between the left flashboard and the right flashboard, a valve cover is installed on an upper flange of the valve body, and a gear shaft is installed in a positioning hole of a shaft hole of the valve cover. A rack of the rack shaft is meshed with a gear of the gear shaft, the axial sealing assembly comprises a packing ring, a packing sleeve and a packing plate, the packing ring, the packing sleeve and the packing plate are sequentially installed in shaft holes of the gear shaft and the valve deck, the packing plate is connected with the valve deck through bolts, and a driving wrench is installed at the tail end of the gear shaft. The marine gate valve has the advantages that the marine gate valve can respond quickly and accurately under the specific working condition that quick opening and closing are needed, and the expected requirement is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field, specifically a kind of quick-opening type marine gate valve. BACKGROUND

[0002] Marine gate valve is an important valve type in ship pipeline system, for controlling the flow of fluid, they are usually installed below waterline of ship, to control the flow of medium such as cooling water, fuel oil, ballast water.In common marine gate valve driving mode, there is worm gear hand drive, electric drive, pneumatic drive etc., respectively used in different ship system, to adapt to different working condition requirements, such driving mode, long opening time, drive needs power supply and gas source, if used in the environment needing emergency quick shutdown, it cannot meet the use. SUMMARY

[0003] For the above problems, the utility model provides a kind of quick-opening type marine gate valve, can quickly and accurately close valve when emergency occurs, can guarantee good sealing performance simultaneously.

[0004] To achieve the above object, the utility model provides following technical scheme: a kind of quick-opening type marine gate valve, comprising: valve body, valve cover, left gate, right gate, rack shaft, gear shaft, axial sealing assembly, the valve body inner chamber is equipped with wedge surface sealed with gate, the left gate and right gate are installed on rack shaft, simultaneously with the wedge surface contact of valve body inner chamber, spring is equipped between left gate and right gate, the valve cover is installed on the flange of valve body, the rack of rack shaft is engaged with the gear of gear shaft, axial sealing assembly includes packing ring, packing sleeve and packing plate, packing ring, packing sleeve, packing plate are sequentially installed in the shaft hole of gear shaft and valve cover, packing plate is connected with valve cover by bolt, driving wrench is equipped at the end of gear shaft.

[0005] The end of rack shaft connected with gate is circular ring, left gate and right gate are installed in circular ring, the other end is equipped with rack engaged with gear.

[0006] The end of gear shaft is gear, positioning hole matched with valve cover is equipped below gear, platform for installing packing ring is equipped above gear, the other end is flat for connecting with driving wrench.

[0007] The utility model has the advantages that: under the working condition of specific need quick opening and closing, the marine gate valve can make response quickly and accurately, reach the expected requirement. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 It is the structural schematic diagram of the utility model.

[0009] Figure 2 It is the structure schematic diagram of left side view valve cover axle hole place of the utility model.

[0010] The number name in the figure: 1. valve body 2. left gate plate 3. right gate plate 4. spring 5. sealing gasket 6. valve cover 7. rack shaft 8. gear shaft 9. packing ring 10. packing sleeve 11. packing plate 12. drive wrench 13. bolt. DETAILED DESCRIPTION

[0011] In order to make the purpose, technical scheme of the utility model more clearly, the utility model is further explained below with the attached drawings.

[0012] A quick-opening marine gate valve, comprising: valve body 1, valve cover 6, left gate plate 2, right gate plate 3, rack shaft 7, gear shaft 8, axial sealing assembly, the inner cavity of valve body 1 is provided with wedge surface sealed with gate plate, left gate plate 2 and right gate plate 3 are installed on rack shaft 7, and simultaneously contact with the wedge surface of the inner cavity of valve body 1, spring 4 is arranged between left gate plate 2 and right gate plate 3, valve cover 6 is installed on the flange of valve body 1, rack shaft 7 is installed in the positioning hole of the shaft hole of valve cover 6, the rack of rack shaft 7 is engaged with the gear of gear shaft 8, axial sealing assembly comprises packing ring 9, packing sleeve 10 and packing plate 11, packing ring 9, packing sleeve 10 and packing plate 11 are sequentially installed in the shaft hole of gear shaft 8 and valve cover 6, packing plate 11 is connected with valve cover 6 through bolt 13, drive wrench 12 is installed at the end of gear shaft 8.

[0013] When working, drive wrench 12 is pulled, gear shaft 8 is rotated, gear shaft 8 drives rack shaft 8 to move up and down through the gear, and the opening and closing of the valve are realized.

[0014] Finally, it is explained that the above examples are only used for describing the technical scheme of the utility model and not for limiting, although the utility model is described in detail with reference to the preferred embodiment, those skilled in the art should understand that the technical scheme of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical scheme of the utility model, and they should be covered in the scope of the claims of the utility model.

Claims

1. A fast-opening marine gate valve, comprising: The valve body (1), the valve cover (6), the left gate plate (2), the right gate plate (3), the rack shaft (7), the gear shaft (8), and the axial sealing assembly are characterized in that: the inner cavity of the valve body (1) is provided with a wedge surface for sealing the gate plate, the left gate plate (2) and the right gate plate (3) are installed on the rack shaft (7) and are in contact with the wedge surface of the inner cavity of the valve body (1), a spring (4) is arranged between the left gate plate (2) and the right gate plate (3), the valve cover (6) is installed on the flange of the valve body (1), the gear shaft (8) is installed in the positioning hole of the shaft hole of the valve cover (6), the rack of the rack shaft (7) is engaged with the gear of the gear shaft (8), and the axial sealing assembly comprises a packing ring (9), a packing sleeve (10), and a packing plate (11), the packing ring (9), the packing sleeve (10), and the packing plate (11) are sequentially installed in the shaft hole of the gear shaft (8) and the valve cover (6), the packing plate (11) is connected with the valve cover (6) through a bolt (13), and a driving wrench (12) is arranged at the end of the gear shaft (8).

2. A fast opening marine gate valve according to claim 1, characterized in that: The end of the rack shaft (7) connected with the gate plate is annular, the left gate plate (2) and the right gate plate (3) are installed in the annular, and the other end is provided with a rack engaged with a gear.

3. A fast opening marine gate valve according to claim 1, characterized in that: The gear shaft (8) is provided with a gear at one end, a positioning hole matched with the valve cover (6) is arranged below the gear, a platform for installing the packing ring (9) is arranged above the gear, and the other end is flat-shaped and connected with the driving wrench (12).

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