Sand blasting device

Abstract

According to the sand blasting device, a sand blasting trolley body is a sand blasting pipe, the front end of the sand blasting pipe is connected with a sand blasting nozzle through a sand blasting nozzle fixator, a supporting pipe is arranged below the sand blasting pipe, and multiple sets of walking wheels are arranged at the bottom of the supporting pipe. The rear end of the sand blasting pipe is connected with a sand blasting machine, a pulling rope is installed at the front end of the sand blasting machine, the sand blasting pipe is placed into the pressure stabilizing cavity from one end of the sealing box, the front end forwards controls the speed through the pulling rope, the rear end polishes the interior of the pressure stabilizing cavity through sand sprayed by the sand blasting machine, and the polished sand is directly sprayed out through an underground air spraying hole in the pressure stabilizing cavity. And the sand blasting trolley enters from the sealing box at one end of the pressure stabilizing cavity and exits from the other side. By means of the sand blasting trolley, the problem of sand blasting in the narrow space is solved, the sand blasting trolley is key equipment in an air reservoir reduction system, it is guaranteed that the sand blasting trolley conducts sand blasting in the narrow space, the interior of the pressure stabilizing cavity is polished, the sand blasting period is shortened through the walking wheels, and unmanned sand blasting in the narrow space can be achieved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of ship gas drag reduction, and particularly relates to a sand blasting device. BACKGROUND

[0002] The ship gas drag reduction technology is a technology for reducing the surface frictional resistance of a ship by introducing air into the bottom of the ship during the running of the ship to form a stable gas lubricating layer. The ship gas layer drag reduction system comprises a gas supply system, a pressure stabilizing chamber and a gas injection hole. The gas injection hole is arranged on the ship bottom plate and communicates with the pressure stabilizing chamber. When the ship is running, the gas supply system supplies gas into the pressure stabilizing chamber, and the gas in the pressure stabilizing chamber is injected out of the ship body through the gas injection hole to form a gas lubricating layer on the bottom of the ship body, which can reduce the resistance.

[0003] In order to ensure stable pressure output, a semicircular or square pressure stabilizing chamber is usually welded in the double bottom of the ship bottom plate. When the ship is at the wharf or encounters severe sea conditions during navigation, the ship gas layer drag reduction system will be closed and run, at this time, seawater will enter the inside of the pressure stabilizing chamber from the gas injection hole and carry marine organisms into the pressure stabilizing chamber. Since seawater is corrosive, it will corrode the ship steel plate and the pressure stabilizing chamber. If it is soaked in seawater for a long time, it will cause the pressure stabilizing chamber and the ship bottom plate to corrode and crack, thereby affecting the structural safety of the ship.

[0004] The pressure stabilizing chamber is a Φ168*20.0 semicircular pipe, which directly contacts seawater inside. Although a special steel pipe containing 1% chromium is used for the semicircular pipe of the pressure stabilizing chamber, in order to further protect the semicircular pipe of the pressure stabilizing chamber and the thickened outer plate, the inside of the pressure stabilizing chamber still needs to be coated. The space inside the pressure stabilizing chamber is small, and it is welded on the thickened outer plate, so it cannot use conventional phosphating, galvanizing and other treatment methods. Due to the small space, personnel cannot enter, so special sand blasting and coating equipment is needed when sand blasting and coating inside the pressure stabilizing chamber. According to the characteristics of the pressure stabilizing chamber, sand blasting and coating equipment is designed for sand blasting and coating. SUMMARY

[0005] To solve the above problems, the present application provides a sand blasting device, which aims to shorten the overall construction period to the greatest extent and improve the construction quality. The technical scheme adopted by the present application is as follows:

[0006] A sand blasting device, the main body of the sand blasting device is a sand blasting pipe, the sand blasting pipe has two bends, both of which are 90° and opposite in orientation, the front end of the sand blasting pipe is connected with a sand blasting nozzle through a fixed buckle, side wheels are arranged on both sides of the fixed buckle, and the rear end of the sand blasting pipe is connected with a sand blasting machine; the overall height of the sand blasting trolley is less than the radius of the pressure stabilizing chamber.

[0007] The sand blasting pipe is embedded in the arc-shaped recess, and the bottom of the supporting pipe is provided with a plurality of groups of walking wheels, each group of walking wheels is provided with two pulleys, and the two pulleys are symmetrically arranged on the two sides of the supporting pipe.

[0008] The sand blasting device further comprises three groups of walking wheels, the first group of walking wheels is arranged close to the fixed buckle, the second group of walking wheels is spaced apart from the first group of walking wheels and the second group of walking wheels, the spacing between the first group of walking wheels and the second group of walking wheels is d1, the spacing between the second group of walking wheels and the third group of walking wheels is d2, and d2=2d1.

[0009] The sand blasting device further comprises three groups of walking wheels, the first group of walking wheels is arranged close to the fixed buckle, the second group of walking wheels is spaced apart from the first group of walking wheels and the second group of walking wheels, the spacing between the first group of walking wheels and the second group of walking wheels is d1, the spacing between the second group of walking wheels and the third group of walking wheels is d2, and d2=2d1.

[0010] The sand blasting device further comprises three groups of walking wheels, the first group of walking wheels is arranged close to the fixed buckle, the second group of walking wheels is spaced apart from the first group of walking wheels and the second group of walking wheels, the spacing between the first group of walking wheels and the second group of walking wheels is d1, the spacing between the second group of walking wheels and the third group of walking wheels is d2, and d2=2d1.

[0011] The sand blasting device further comprises three groups of walking wheels, the first group of walking wheels is arranged close to the fixed buckle, the second group of walking wheels is spaced apart from the first group of walking wheels and the second group of walking wheels, the spacing between the first group of walking wheels and the second group of walking wheels is d1, the spacing between the second group of walking wheels and the third group of walking wheels is d2, and d2=2d1.

[0012] The sand blasting device further comprises three groups of walking wheels, the first group of walking wheels is arranged close to the fixed buckle, the second group of walking wheels is spaced apart from the first group of walking wheels and the second group of walking wheels, the spacing between the first group of walking wheels and the second group of walking wheels is d1, the spacing between the second group of walking wheels and the third group of walking wheels is d2, and d2=2d1. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structure schematic diagram of the sand blasting trolley.

[0014] Among them, 1-sand blasting pipe, 2-sand blasting nozzle, 3-fixed buckle, 4-side support wheel, 5-walking wheel, 6-supporting pipe. DETAILED DESCRIPTION

[0015] The sand blasting device further comprises three groups of walking wheels, the first group of walking wheels is arranged close to the fixed buckle, the second group of walking wheels is spaced apart from the first group of walking wheels and the second group of walking wheels, the spacing between the first group of walking wheels and the second group of walking wheels is d1, the spacing between the second group of walking wheels and the third group of walking wheels is d2, and d2=2d1.

[0016] The sand blasting device further comprises three groups of walking wheels, the first group of walking wheels is arranged close to the fixed buckle, the second group of walking wheels is spaced apart from the first group of walking wheels and the second group of walking wheels, the spacing between the first group of walking wheels and the second group of walking wheels is d1, the spacing between the second group of walking wheels and the third group of walking wheels is d2, and d2=2d1. Figure 1 The sand blasting trolley is provided with a sand blasting pipe 1, and a sand blasting nozzle 2 is arranged at the front end of the sand blasting pipe.

[0017] The sand blasting pipe is provided with two bends, the bending angle is 90 degrees, the orientations of the two bends are opposite, and the overall height is not greater than the radius of the stable pressure cavity.

[0018] Sandblasting pipe under the setting pulley pipe 6, can make sandblasting device in the steady pressure cavity forward, pulley pipe 6 sets up three groups of walking wheels. Walking wheel according to one times and two times spacing setting.

[0019] Sandblasting nozzle is fixed by sandblasting fixed buckle 3, sandblasting fixed buckle is installed a group of side support wheel 4. The maximum width of side support wheel 4 is not more than the radius of the steady pressure cavity, and should be as close as possible, side support wheel 5 walks on the inner wall of the steady pressure cavity, which can ensure that the walking direction of the whole trolley does not deviate.

Claims

1. A sandblasting device, characterized in that The sand blasting device body is a sand blasting pipe (1) with two bends, both of which are 90° and opposite in orientation, the front end of the sand blasting pipe is connected with a sand blasting nozzle (2) through a fixed buckle (3), side support wheels (4) are arranged on both sides of the fixed buckle, and the rear end of the sand blasting pipe is connected with a sand blasting machine; the overall height of the sand blasting trolley is less than the radius of the pressure stabilizing cavity; A pipe support (6) is arranged below the sand blasting pipe, the pipe support is an arc-shaped groove concave downward as a whole, the sand blasting pipe is embedded in the arc-shaped groove, and a plurality of groups of walking wheels (5) are arranged at the bottom of the pipe support, each group of walking wheels is provided with two pulleys, and the two pulleys are symmetrically arranged on both sides of the pipe support.

2. A sandblasting device according to claim 1, characterized in that The bottom of the pipe support is provided with three groups of walking wheels, the first group of walking wheels is arranged close to the fixed buckle, the second group of walking wheels is spaced from the first group of walking wheels and the second group of walking wheels, the spacing between the first group of walking wheels and the second group of walking wheels is d1, and the spacing between the second group of walking wheels and the third group of walking wheels is d2, d2=2d1.

3. A sandblasting device according to claim 1, characterized in that The maximum width at the two side support wheels is not greater than the radius of the pressure stabilizing cavity.

4. The sandblasting device of claim 1, wherein The side support wheels are in contact with the inner wall of the pressure stabilizing cavity.

5. The sandblasting device of claim 1, wherein The diameter of the sand blasting pipe approaches half of the radius of the pressure stabilizing cavity.

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