Dust suction apparatus of inner tank of low-temperature storage tank

[0020] The present invention will be further described in detail below with reference to the specific embodiments of the drawings.

[0021] Figure 1 to Figure 7 It is a schematic diagram of the structure of the present invention.

[0022] The reference signs are: suction pipe 1, pipe end external thread 1a, notch 1b, dust collecting net pocket 2, joint 21, diamond wire mesh 22, compressed air pipe 3, air outlet 3b, air inlet 3a, air outlet section 31. Air intake section 32, tightening nut 4, corrugated hose 5.

[0023] like Figure 1 to Figure 7 As shown in the figure, the vacuuming device for the tank in the cryogenic storage tank includes a dust collecting pipe 1 that can pass into compressed gas and also serves as a dust-containing gas channel. One end is connected with a vacuum hose that doubles as a vacuum head. The vacuum pipe 1 is provided with a notch 1b extending along its axial direction. The notch 1b is installed and connected with a compressed air pipe 3, which can input compressed air into The dust suction pipe 1 realizes dust collection by relying on the pressure difference formed between the front and the rear of the gas flow.

[0024] like figure 1 , image 3 As shown, the air outlet section 31 of the compressed air pipe 3 is fitted on the inner wall of the dust suction pipe 1 and is sealed and welded with the notch 1b, so that the dust-laden gas in the dust suction pipe 1 can flow smoothly and unobstructed, and the gas outlet section 31 The air outlet 3b should face the end of the suction pipe 1 where the dust collecting net bag 2 is connected, and the air inlet 3a of the air inlet section 32 of the compressed air pipe 3 is connected to the compressed air source.

[0025] like figure 2 As shown, the suction pipe 1 is a stainless steel hollow pipe with a circular cross-section, and the outer wall of its front port is provided with a pipe end external thread 1a suitable for connection. use as Image 6 , Figure 7 As shown, the vacuum hose is a stainless steel corrugated hose 5 connected with the vacuum pipe 1 by welding, which can be freely bent and stretched. Of course, it can also be connected by screw connection or snap connection or any other well-known method. The stainless steel corrugated hose 5 should have a certain length to facilitate hand-held movement to search the entire interior of the tank. The corrugated hose made of stainless steel has the characteristics of wear resistance and light weight.

[0026] like figure 2 , Figure 4 , Figure 5 As shown, the dust collecting net bag 2 is made with a joint 21 with an external thread, and the joint 21 is equipped with an external thread 1a of the pipe end for screw locking and fixing the fastening of the dust collecting net bag 1 and the dust collecting net bag 2. Nut 4. The dust collecting net pocket 2 can be easily tightened or dismantled by the screw fitting connection, so that the garbage in the dust collecting net pocket 2 can be poured out. The dust collecting net pocket 2 is equipped with a metal diamond wire mesh 22. In addition to the dust collection function, the wire mesh can also prevent large solid debris particles from flying out at high speed after being sucked out and hurting people.

[0027] The vacuuming device for the inner tank of the cryogenic storage tank of the present invention is implemented as follows: the air inlet 3a of the compressed air pipe 3 fitted on the thin-walled stainless steel dust collecting pipe 1 is firstly connected with the air outlet pipe of the air compressor, and the stainless steel corrugated The hose 5 is a flexible hose with a certain length that can be freely bent and stretched, and can be manually extended through the opening of the inner tank to the bottom or other parts of the inner tank of the cryogenic storage tank where no other components such as nozzles have been installed. Absorb the sundries and garbage in the inner tank, and other openings of the inner tank can be put into lighting bulbs, which is convenient for manual operation to visually check whether the garbage in the tank is cleaned up, and it is convenient to adjust the stainless steel corrugated hose as a vacuum head5 direction and location. The suction force of the dust suction pipe 1 is controlled by the pressure regulating valve on the compressor, and the suction force can be strong or weak; the length of the corrugated hose 5 can be customized according to the needs, and the longer corrugated hose 5 can be extended into the bottom of the large inner tank. The stainless steel corrugated hose 5 is used as a suction head, and has the advantages of wear resistance, flexibility, free bending and expansion. After the corrugated hose 5 touches the bottom of the inner tank, the compressed air outlet valve can be opened to start the vacuuming work. The compressed air flows along the compressed air pipe 3 through the air inlet 3a and is ejected at a high speed from the air outlet 3b. The air outlet 3b should point to the end of the suction pipe 1 where the dust collecting net bag 2 is installed. The high-speed flow along the dust collection pipe 1 to the dust collection net bag 2, at the same time, due to the pressure difference formed by the air at the front and rear ends of the air outlet 3b, the stainless steel corrugated hose 5 extending into the tank can continuously suck in the sundries in the inner tank, etc. Dust-laden gas, the dust-laden gas is discharged along the stainless steel corrugated hose 5 and the suction pipe 1 through the dust collection net bag 2 to filter out larger solid debris particles, and the dust collection net bag 2 passes through the tightening nut 4 and the external thread of the pipe end. 1a is connected with the dust suction pipe 1 by screw fit, which can be easily installed and disassembled. When the sundries are collected, just loosen the tightening nut 4, remove the dust collecting net bag 2 and pour out the sundries and garbage inside. Can.

[0028] The low-temperature storage tank inner tank vacuuming device of the invention has the characteristics of simple structure, economical and practical, and good dust-absorbing effect, can be conveniently and flexibly used by hand, and can adapt to vacuuming in various narrow and complex environmental spaces.

[0029] The preferred embodiment of the present invention has been described, and various changes or modifications can be made by those skilled in the art without departing from the scope of the present invention.