Ice particle pressure vessel and ice particle spraying rust removal system

Abstract

The present invention discloses an ice pellet pressure vessel, comprising an upper tank body, a middle tank body, and a lower tank body that are interconnected. The upper tank body and the lower tank body are separated by valve three, and the middle tank body is separated from the upper tank body and the lower tank body by valve four and valve six, respectively, to achieve continuous operation without stopping to replenish ice pellets. Also disclosed is an ice pellet spraying and rust removal system comprising an ice pellet pressure vessel, which also includes an air compressor, an air storage tank, a precooler, a refrigerator, and an ice pellet making device. Fresh water is first cooled by pre-cooled air, then cooled by the secondary cooled air to make ice, and then the ice pellets are cooled in the ice pellet pressure vessel. After multiple cooling steps, the ice pellet temperature is below 40°C. According to the physical properties of ice, when the temperature is below 40°C, the Mohs hardness of ice can reach level 4 or above. At this time, the ice pellets are driven by low-temperature compressed air to be sprayed onto the metal surface, achieving good rust removal and cleaning effects, and the process is easy to control.

Description

Technical Field

[0001] The invention relates to the technical field of rust removal and cleaning, in particular to an ice particle pressure container and an ice particle spraying rust removal system. Background Art

[0002] Currently, the main methods for rust removal, coating, and corrosion protection on metal surfaces in China are sandblasting and ultra-high-pressure water rust removal. The medium used in sandblasting is mineral sand, while the medium used in ultra-high-pressure water rust removal is drinking tap water. Sandblasting produces heavy metal dust pollution, which directly harms the atmospheric environment and the physical and mental health of workers. Ultra-high-pressure water rust removal uses drinking tap water as the medium, pressurized to 2500 bar by a high-pressure pump, and sprayed onto the metal surface to remove rust. Ultra-high-pressure water rust removal has the following disadvantages in industrial applications: Ultra-high-pressure operations are prone to safety accidents; High-pressure pump driving consumes a lot of energy; High-pressure water operations do not completely remove rust, making it difficult to remove pitted areas on the metal surface; It is difficult to achieve effective roughness on the rusted surface, which affects the adhesion of the coating.

[0003] To address the shortcomings of existing metal surface rust removal processes, an ice particle spraying system is being developed to achieve a low-energy, pollution-free, safe, and efficient metal surface rust removal process. Ice particles are produced from water and then cooled using low-temperature compressed air or liquid nitrogen. After the compressed air is dried, purified, and cooled, it is used to spray the ice particles onto the metal surface, effectively removing rust. However, existing ice particle spraying systems require that the spraying process, after the ice particles are produced, be stopped and refilled. This is time-consuming and labor-intensive, preventing continuous operation and impacting rust removal efficiency. Therefore, there is an urgent need for an ice particle pressure vessel and an ice particle spraying system incorporating the same. Summary of the Invention

[0004] In view of the fact that the existing ice particle rust removal device needs to stop spraying and then replenish ice particles after preparing ice particles and putting them into the spraying device, which cannot achieve continuous operation, an ice particle pressure vessel is provided. Through the cooperation of multiple tank bodies, the replenishment of ice particles during operation does not affect the spraying of ice particles, and continuous operation can be achieved without stopping to replenish ice particles. An ice particle spraying and rust removal system including an ice particle pressure vessel is also provided.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An ice particle pressure vessel comprises an upper tank body, a middle tank body and a lower tank body which are interconnected. The upper tank body and the lower tank body are separated by valve three, the middle tank body is separated from the upper tank body and the lower tank body by valve four and valve six respectively, a low-temperature air inlet one and a feed port are provided above the upper tank body, valves one and valve two are installed on the low-temperature air inlet one and the feed port respectively, a low-temperature air inlet two is provided on the middle tank body and is separated from the middle tank body by valve five, a roller machine is fixedly connected to the lower part of the lower tank body, the roller machine is separated from the injection pipe by valve eight, and the injection pipe is separated from the middle tank body by valve seven.

[0007] Furthermore, vibrators are fixed on the walls of the upper tank body and the lower tank body, an agitator is fixed inside the upper tank body, and a pressure relief port is provided above the upper tank body. The outlet end of the low-temperature air inlet 1 is aligned with the outlet end of the feed port.

[0008] Furthermore, a cover plate surrounding the roller mill is fixed to the lower end of the lower tank body; two groups of valves 8 are provided below the roller mill, one of which is reserved for backup.

[0009] An ice particle spraying and rust removal system comprises the ice particle pressure vessel, an air compressor, an air storage tank, a precooler, a refrigerator, and an ice particle making device. Air is compressed by the air compressor and stored in the air storage tank, and is preliminarily cooled by the precooler. Part of the preliminarily cooled air flows into a water storage tank in the ice particle making device for preliminarily cooling fresh water. Another part of the air is secondary cooled by the refrigerator and then flows into the ice particle making device for heat exchange during the ice making process. Another part of the air flows into a low-temperature air inlet 1 and a low-temperature air inlet 2 in the ice particle pressure vessel, thereby achieving ice particle cooling and ice particle driving. Finally, the air is sprayed onto a metal surface through a spray pipe in the ice particle pressure vessel to achieve ice particle rust removal.

[0010] Furthermore, the ice particle making device includes a bracket, a grooved roller, a cutter, a water storage tank and a dripping line fixed to the bracket, the grooved roller and the cutter are movably connected to the bracket through a roller shaft and a cutter shaft respectively, the outer surface of the grooved roller is arranged with grooves, the water storage tank above the grooved roller drips water into the grooves of the grooved roller through the dripping line, and the dripping line is arranged corresponding to the groove, a cutter corresponding to the groove is arranged on one side of the grooved roller, a motor is fixed on the bracket to drive the roller shaft or the cutter shaft to rotate, the roller shaft and the cutter shaft are realized by a transmission mechanism to realize reverse rotation of the two, the grooved roller and the roller shafts at both ends are provided with cavities that are interconnected, one end of the roller shaft is connected to the refrigerator through a pipe, so that the air after secondary cooling flows into the internal cavity of the grooved roller to cool the water flow on the groove to make ice, the water storage tank is provided with a pipe connected to the precooler, which is used to transport the precooled air to the water storage tank to cool the fresh water, an ice particle collector is provided below the grooved roller and the cutter, and the ice particles are transported from the ice particle collector to the feed port in the ice particle pressure vessel through a conveying device.

[0011] Furthermore, the drip discharge line adopts a hose, and a knob threadedly connected to the bracket is provided on the drip discharge line for adjusting the droplet flow rate. The knob is set between the two hoses, and a contact plate that increases the contact area is fixed on the knob for directly contacting the hose.

[0012] Furthermore, the drum shaft and the cutter shaft rotate in opposite directions via a gear set in which an odd number of gear pairs are meshed.

[0013] Furthermore, the groove width of the groove roller is 3-5 mm.

[0014] Furthermore, the water tank is provided with a pipe interface connected to an external water source for replenishing fresh water in the water tank.

[0015] Furthermore, the ice particle jet rust removal system also includes a compressed air oil-water separator, a cold dryer, an air filter, a high-efficiency purifier, and an adsorption dryer, which are connected to the air storage tank and the precooler and are connected in sequence according to the air flow direction.

[0016] The beneficial effects of the present invention are:

[0017] 1. The present invention realizes the cooling, storage and spraying of ice particles through the cooperation of the upper tank body, the middle tank body and the lower tank body and multiple valves in the ice particle pressure container. At the same time, the replenishment of ice particles during operation does not affect the spraying of ice particles, and continuous operation can be achieved without stopping the machine to replenish ice particles.

[0018] 2. In the present invention, fresh water is first cooled by primary cooling air, then by secondary cooling air to produce ice. The ice particles are then cooled again within the ice particle pressure vessel. After multiple cooling cycles, the ice particle temperature is below -40°C. Based on the physical properties of ice, its Mohs hardness can reach 4 or higher at temperatures below -40°C. At this point, the ice particles are sprayed onto metal surfaces using low-temperature compressed air, achieving effective rust removal and cleaning, while also being easily controlled.

[0019] 3. In the ice-making device of the present invention, ice bars are formed in a plurality of grooves, which are then cut into ice particles by counter-rotating cutters. The ice-making efficiency is high, and the droplet flow rate above the groove roller can be adjusted by a knob, which facilitates the control of the water flow and the speed and effect of ice particle making. The groove width is appropriately widthd, the ice particles formed are of appropriate volume and specifications, and the rust removal effect is good.

[0020] 4. In the present invention, the ice particles are cooled multiple times before being ejected from the injection pipe. The air is processed multiple times by the compressed air oil-water separator, the cold dryer and the adsorption dryer. The temperature of the ice particles is low, and there is no water mist or water vapor in the injection pipe. This can effectively prevent the injection pipe from freezing and causing blockage of the injection pipe. At the same time, it also provides a guarantee for continuous operation and avoids pipeline maintenance work caused by freezing of the injection pipe.

[0021] 5. The ice particle pressure container of the present invention is provided with a stirrer and a vibrator, which can prevent the ice particles from sticking to the upper tank body or the lower tank body.

[0022] 6. The present invention uses fresh water to make ice particles for rust removal, and the working environment is free of dust pollution, ensuring the physical and mental health of close-range workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 Schematic diagram of the ice particle pressure container in the present invention.

[0024] Figure 2 Schematic diagram of the ice particle jet rust removal system of the present invention.

[0025] Figure 3 This is a front view of the ice particle making device of the present invention.

[0026] Figure 4 This is a top view of the ice particle making device of the present invention.

[0027] Figure 5 Schematic diagram of the dripping line in the present invention.

[0028] Figure 6 This is a side view of the connection between the drip cable and the knob in the present invention.

[0029] In the figure, 11, upper tank body; 111, low-temperature air inlet 1; 112, feed port; 12, middle tank body; 122, low-temperature air inlet 2; 13, lower tank body; 14, agitator; 15, vibrator; 16, roller machine; 17, injection pipe; 181, valve 1; 182, valve 2; 183, valve 3; 184, valve 4; 185, valve 5; 186, valve 6; 187, valve 7; 188, valve 8; 19, cover plate; 21, bracket; 22, water storage tank; 23, drip line; 231, knob; 24, grooved roller; 241, roller shaft; 25, cutter; 251, cutter shaft; 26, gear set; 27, motor; 28, ice particle collector. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the specific embodiments of the drawings, but the protection scope of the present invention is not limited thereto.

[0031] Example 1

[0032] like Figure 1The ice particle pressure container shown includes an upper tank body 11, a middle tank body 12 and a lower tank body 13 that are interconnected. The upper tank body 11 and the lower tank body 13 are separated by a valve 3 183. The middle tank body 12 is separated from the upper tank body 11 and the lower tank body 13 by valve 4 184 and valve 6 186 respectively. A low-temperature air inlet 111 and a feed port 112 are provided above the upper tank body 11. The outlet end of the low-temperature air inlet 111 is aligned with the outlet end of the feed port 112 to improve the cooling effect of the ice particles. The low-temperature air inlet 111 and the feed port 112 are respectively installed with valve 181 and valve 2 182. An agitator 14 is fixed inside the upper tank body 11. A pressure relief port is also provided above the upper tank body 11 for regulating the pressure of the upper tank body 11. Protection, the middle tank body 12 is provided with a low-temperature air inlet 2 122 which is separated from the middle tank body 12 by a valve 5 185, vibrators 15 are fixed on the walls of the upper tank body 11 and the lower tank body 13, a roller machine 16 is fixedly connected to the bottom of the lower tank body 13, and a covering plate 19 surrounding the roller machine 16 is fixed at the lower end of the lower tank body 13 to play a reinforcing role, two groups of valves 8 188 are provided below the roller machine 16, and the bottom of the roller machine 16 is separated from the injection pipe 17 by one group of valves 8 188, and the other group of valves 8 188 is reserved for backup, which is used when the first group of valves 8 188 fails or needs to be connected to the second injection pipe 17, and is in a closed state when not in use. The injection pipe 17 is separated from the middle tank body 12 by valve 7 187.

[0033] The ice pellet pressure vessel has two working states, one for replenishing ice pellets in the upper tank body 11 and the other for replenishing ice pellets in the lower tank body 13. When the upper tank body 11 needs to be replenished with ice pellets, valve 1 181, valve 2 182, valve 5 185, valve 6 186, valve 7 187 and valve 8 188 connected to the injection pipe 17 are opened, and valve 3 183 and valve 4 184 are closed. At this time, the upper tank body 11 is separated from the middle tank body 12 and the lower tank body 13, and the middle tank body 12 is connected to the lower tank body 13. Ice pellets enter the upper tank body 11 from the feed port 112 to replenish and store ice pellets in the upper tank body 11, and the low-temperature gas is discharged. The low-temperature air enters the upper tank body 11 from the low-temperature air inlet 111 to cool the ice particles in the upper tank body 11; the low-temperature air enters the middle tank body 12 from the low-temperature air inlet 2 122, and a part of it enters the lower tank body 13, providing driving force for the ice particles in the lower tank body 13, and at the same time can achieve further cooling, and the ice particles in the lower tank body 13 are transported to the injection pipe 17 through the roller machine 16, and then the low-temperature gas flowing into the injection pipe 17 from the middle tank body 12 sprays the ice particles from the injection pipe 17 to the surface to be rusted.

[0034] When the lower tank body 13 needs to be replenished with ice particles, valve three 183, valve four 184, valve five 185, valve seven 187 and valve eight 188 connected to the injection pipe 17 are opened, and valve one 181, valve two 182 and valve six 186 are closed. At this time, the upper tank body 11 is connected with the middle tank body 12 and the lower tank body 13, and the middle tank body 12 and the lower tank body 13 are separated. The upper tank body 11 is not replenished with ice particles. The ice particles in the upper tank body 11 are driven by the low-temperature airflow from the middle tank body 12 to the upper tank body 11. The ice particles enter the lower tank body 13 from the upper tank body 11, replenishing the lower tank body 13 with ice particles. At the same time, the ice particles in the lower tank body 13 are driven by the low-temperature airflow through the roller machine 16 to enter the injection pipe 17. The low-temperature gas flowing from the middle tank body 12 into the injection pipe 17 sprays the ice particles from the injection pipe 17 to the surface to be derusted. During the switching process between the two modes, ice particles can always be sprayed out from the spraying pipe 17, thereby achieving continuous operation without stopping the machine to replenish ice particles.

[0035] Example 2

[0036] Figure 2 The figure shows an ice particle spraying rust removal system, which includes the ice particle pressure vessel described in Example 1, and also includes an air compressor, an air storage tank, a precooler, a refrigerator, and an ice particle making device. The air is compressed by the air compressor and stored in the air storage tank. The air is then processed in sequence by a compressed air oil-water separator, a cold dryer, an air filter, a high-efficiency purifier, and a dryer. The compressed air oil-water separator is used to separate impurities such as condensed water and oil from the compressed air, so that the compressed air is preliminarily purified; the cold dryer cools and dries the compressed air; the air filter and the high-efficiency purifier sequentially purify the air. The air is purified to varying degrees; the air is dried by the air dryer; the air is then preliminarily cooled by the precooler, and part of the preliminarily cooled air flows into the water storage tank in the ice particle making device for preliminarily cooling the fresh water. Another part of the air is cooled by the refrigerator for secondary cooling and flows into the ice particle making device for heat exchange during the ice making process. The other part flows into the low-temperature air inlet 111 and the low-temperature air inlet 2 122 in the ice particle pressure vessel to achieve ice particle cooling and ice particle driving, and finally is sprayed onto the metal surface through the spray pipe 17 in the ice particle pressure vessel to achieve ice particle rust removal.

[0037] Depend on Figure 3 and Figure 4It can be seen that the ice particle making device includes a bracket 21, a grooved roller 24, a cutter 25, a water storage tank 22 fixed to the bracket 21, and a dripping line 23. The grooved roller 24 and the cutter 25 are movably connected to the bracket 21 through a roller shaft 241 and a cutter shaft 251 respectively. The outer surface of the grooved roller 24 is arranged with grooves. The groove width of the grooved roller 24 is 3-5mm. If the groove width is too wide, the water in the groove is easy to flow out, and the ice bars formed in the groove are easy to be too thin, and the ice particles formed are easy to be too small. If the ice strips are too narrow, the ice particles formed are likely to be too small. The water tank 22 is provided with a pipe connected to the precooler, which is used to transport the air initially cooled by the precooler to the water tank 22 to cool the fresh water. At this time, the fresh water temperature can be reduced to 0-5°C. The water tank 22 is also provided with a pipe interface connected to an external water source to replenish the fresh water in the water tank 22. The water tank 22 above the groove drum 24 drips water into the groove of the groove drum 24 through the drip line 23, and the drip line 23 is set corresponding to the groove. Figure 5 and Figure 6 The drip line 23 adopts a hose, and a knob 231 is provided on the drip line 23 which is threadedly connected to the bracket 21. The knob 231 is set in the middle of the two hoses. A contact plate for increasing the contact area is fixed on the knob 231, which is used to directly contact the hose. By rotating the knob 231, the contact plate squeezes the hose of the drip line 23, so that the shape of the hose changes, thereby changing the cross-sectional area of the water flow channel to achieve the adjustment of the droplet flow rate. A cutter 25 corresponding to the groove is provided on one side of the groove roller 24, and a motor 27 for driving the roller shaft 241 or the cutter shaft 251 to rotate is fixed on the bracket 21. The roller shaft 241 and the cutter shaft 251 are driven by a transmission The driving mechanism realizes the reverse rotation of the two. The transmission mechanism adopts a gear set 26 with an odd number of meshing gears. The grooved roller 24 and the roller shafts 241 at both ends are provided with interconnected cavities. One end of the roller shaft 241 is connected to the refrigerator through a pipe. The roller shaft 241 and the pipe at one end are sealed by a conical dynamic seal, so that the air after secondary cooling flows into the internal cavity of the grooved roller 24 to cool the water flow on the groove to make ice. At this time, the temperature of the ice bars produced is -5 to -10°C. An ice particle collector 28 is provided below the grooved roller 24 and the cutter 25. The ice particles are transported from the ice particle collector 28 to the feed port 112 in the ice particle pressure vessel through a conveying device.

[0038] When the ice particle making device is working, the water in the water storage tank 22 is cooled by the air after preliminary cooling in the precooler, and then drips into the grooves of the grooved drum 24 through the drip line 23. The air after secondary cooling in the grooved drum 24 is cooled into ice. The ice in the grooves is cut into ice particles by the counter-rotating cutter. The ice particles are collected in the ice particle collector 28 below and then transported to the feed port 112 in the ice particle pressure vessel through the conveying device, thereby replenishing the ice particles in the ice particle pressure vessel.

[0039] The examples are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments. Any obvious improvements, substitutions or modifications that can be made by those skilled in the art without departing from the essence of the present invention are within the scope of protection of the present invention.

Claims

1. An ice particle pressure container, characterized in that: The invention comprises an upper tank body (11), a middle tank body (12) and a lower tank body (13) which are interconnected. The upper tank body (11) and the lower tank body (13) are separated by a valve three (183). The middle tank body (12) is separated from the upper tank body (11) and the lower tank body (13) by valve four (184) and valve six (186) respectively. A low-temperature air inlet (111) and a feed port (112) are provided above the upper tank body (11). The low-temperature air inlet (111) and the feed port (112) are provided above the upper tank body (11). (112) are respectively installed with valve one (181) and valve two (182), the middle tank body (12) is provided with a low-temperature air inlet two (122) separated from the middle tank body (12) by valve five (185), and a roller machine (16) is fixedly connected below the lower tank body (13), and the roller machine (16) is separated from the injection pipe (17) by valve eight (188), and the injection pipe (17) is separated from the middle tank body (12) by valve seven (187); A vibrator (15) is fixed on the wall of the upper tank body (11) and the lower tank body (13), an agitator (14) is fixed inside the upper tank body (11), and a pressure relief port is provided above the upper tank body (11). The outlet end of the low-temperature air inlet (111) is aligned with the outlet end of the feed port (112).

2. The ice particle pressure container according to claim 1, characterized in that: A covering plate (19) surrounding the roller machine (16) is fixed to the lower end of the lower tank body (13); two groups of valves eight (188) are provided below the roller machine (16), one of which is reserved for standby.

3. An ice particle jet rust removal system, characterized by: An ice particle pressure vessel comprising any one of claims 1-2, further comprising an air compressor, an air storage tank, a precooler, a refrigerator, and an ice particle making device. The air is compressed by the air compressor and stored in the air storage tank, and is preliminarily cooled by the precooler. A portion of the preliminarily cooled air flows into the water storage tank in the ice particle making device for preliminarily cooling the fresh water. Another portion of the air flows into the ice particle making device after secondary cooling by the refrigerator for heat exchange during the ice making process, and another portion of the air flows into a low-temperature air inlet 1 (111) and a low-temperature air inlet 2 (122) in the ice particle pressure vessel, thereby achieving ice particle cooling and ice particle driving, and finally being sprayed onto the metal surface through a spray pipe (17) in the ice particle pressure vessel to achieve ice particle rust removal.

4. The ice particle spraying rust removal system according to claim 3, characterized in that: The ice particle making device comprises a bracket (21), a grooved roller (24), a cutter (25), and a water storage tank (22) and a dripping line (23) fixed on the bracket (21). The grooved roller (24) and the cutter (25) are movably connected to the bracket (21) through a roller shaft (241) and a cutter shaft (251), respectively. Grooves are arranged on the outer surface of the grooved roller (24). The water storage tank (22) above the grooved roller (24) drips water into the grooves of the grooved roller (24) through the dripping line (23), and the dripping line (23) is arranged corresponding to the grooves. A cutter (25) corresponding to the grooves is arranged on one side of the grooved roller (24). A driving roller shaft (241) or a cutter shaft (251) is fixed on the bracket (21). The motor (27) is driven by a motor, and the roller shaft (241) and the cutter shaft (251) are rotated in opposite directions by a transmission mechanism. The grooved roller (24) and the roller shafts (241) at both ends are provided with cavities that are interconnected. One end of the roller shaft (241) is connected to a refrigerator through a pipeline, so that the air after secondary cooling flows into the internal cavity of the grooved roller (24) to cool the water flow on the groove to make ice. The water storage tank (22) is provided with a pipeline connected to a precooler, which is used to transport the precooled air to the water storage tank (22) to cool the fresh water. An ice particle collector (28) is provided below the grooved roller (24) and the cutter (25). The ice particles are transported from the ice particle collector (28) to the feed port (112) in the ice particle pressure container through a transport device.

5. The ice particle spraying rust removal system according to claim 4, characterized in that: The dripping discharge line (23) adopts a hose. The dripping discharge line (23) is provided with a knob (231) threadedly connected to the bracket (21) for adjusting the flow rate of the liquid droplets. The knob (231) is arranged between the two hoses. A contact plate for increasing the contact area is fixed on the knob (231) for directly contacting the hose.

6. The ice particle spraying rust removal system according to claim 4, characterized in that: The roller shaft (241) and the cutter shaft (251) are rotated in opposite directions by a gear set (26) in which an odd number of gear pairs are meshed.

7. The ice particle spraying rust removal system according to claim 4, characterized in that: The groove width of the groove roller (24) is 3-5 mm.

8. The ice particle spraying rust removal system according to claim 4, characterized in that: The water storage tank (22) is also provided with a pipeline interface connected to an external water source for replenishing fresh water in the water storage tank (22).

9. The ice particle spraying rust removal system according to claim 3, characterized in that: It also includes a compressed air oil-water separator, a cold dryer, an air filter, a high-efficiency purifier, and an adsorption dryer that are connected to the air storage tank and the precooler and are connected in sequence according to the air flow direction.

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