Explosion-proof water sand blasting device

Abstract

The utility model relates to the technical field of water sand blasting devices, in particular to an explosion-proof water sand blasting device, which is characterized in that the left side of an outer barrel is fixedly communicated with an air inlet pipe, and the lower part of the outer barrel is fixedly communicated with a discharge pipe. According to the explosion-proof water sand blasting device, a cylinder is inserted into a conical groove, the conical groove is more convenient for the cylinder to enter a feeding pipe, and then a baffle plate is rotated to screw the cylinder into the feeding pipe, so that flammable and explosive gas or dust can be prevented from entering equipment through a first elastic sealing ring and the baffle plate, and the possibility of forming an explosive mixture in the equipment is reduced; when the lower end of the stirring roller is adjacent to the inner wall of the inner barrel, the output end of the multi-stage electric telescopic rod extends out, and the stirring roller can move up and down by controlling the output end of the multi-stage electric telescopic rod to move in a reciprocating manner, so that the stirring dead angles in the inner barrel can be reduced; and water and sand in the inner barrel can be mixed more sufficiently.

Description

Technical Field

[0001] This utility model relates to the technical field of water jet sandblasting devices, specifically an explosion-proof water jet sandblasting device. Background Technology

[0002] Water blasting equipment, also known as water blasting machine or liquid blasting machine, is a device used for cleaning, polishing and other treatments on the surface of objects. The water blasting rust removal process involves spraying an appropriate amount of sand carried in water onto the surface of the material that needs rust removal, and removing the rust layer through the impact, shearing and friction of the solid-liquid mixture.

[0003] For example, a water blasting device with announcement number "CN217097298U" uses a fixed plate to create two internal spaces. After the first batch of material is mixed, it enters the next space through a discharge port on the fixed plate. Closing the discharge port allows for the mixing of the second batch of material. The first batch can be mixed while the next batch is being mixed, reducing wasted time. A push rod moves the base and wheels to move the water blasting device. However, this device is prone to allowing flammable and explosive gases or dust to enter through the feed and water inlets. When the accumulated static charge inside the equipment reaches a certain level, the resulting electric sparks can ignite the surrounding combustible dust and air mixture, potentially causing an explosion. Furthermore, the fixed position of the mixing rod means that some areas are not mixed, creating dead zones and leading to incomplete mixing of some raw materials. Utility Model Content

[0004] The purpose of this invention is to address the problem that flammable and explosive gases or dust can easily enter the feed inlet and water inlet. When the static charge accumulated inside the equipment reaches a certain level, the generated electric sparks are enough to ignite the surrounding combustible dust and air mixture, thereby causing an explosion. At the same time, the device has a fixed position for the stirring rod, which means that some areas cannot be stirred, resulting in stirring dead zones and making it easy for some raw materials to be insufficiently mixed. Therefore, an explosion-proof water jetting device is proposed.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Design an explosion-proof water blasting device, comprising an outer barrel and an inner barrel. The inner barrel is fixedly connected to the inner wall of the outer barrel. The top of the outer barrel is connected to a cover plate via an elastic sealing gasket and multiple bolts. Feed pipes are fixedly connected to both sides of the top of the cover plate. Each feed pipe has a sealing structure inside. An auxiliary mixing mechanism is provided in the middle of the top of the cover plate. An air inlet pipe is fixedly connected to the left side of the outer barrel. A discharge pipe is fixedly connected to the bottom of the outer barrel.

[0007] Preferably, each of the discharge pipes is equipped with a sandblasting head, and multiple support legs are fixedly connected to the bottom of the outer barrel.

[0008] Preferably, the sealing structure includes a baffle, a cylinder is fixedly connected to the outer wall of the baffle, a first elastic sealing ring is fixedly connected to the upper part of the outer wall of the cylinder, the outer wall of the first elastic sealing ring abuts against the conical groove, the outer wall of the cylinder is threadedly connected to the feed pipe, and grooves are machined on both sides of the baffle.

[0009] Preferably, the conical groove is machined above the inner wall of the feed pipe.

[0010] Preferably, the auxiliary mixing mechanism includes multi-stage electric telescopic rods and locking blocks. The ends of the two multi-stage electric telescopic rods are fixedly connected to the cover plate. The output ends of the multi-stage electric telescopic rods are fixedly connected to the slider. The inner wall of the slider is slidably connected to two vertical rods. The bottom of each vertical rod is fixedly connected to the cover plate. The inner sides of the two locking blocks are fixedly connected to the stirring roller. The outer walls of the locking blocks and the stirring rollers are pressed against the second elastic sealing ring. The outer wall of the second elastic sealing ring is fixedly connected to a circular ring. The outer wall of the circular ring is rotatably connected to the cover plate through a sealing bearing.

[0011] Preferably, the slider is threadedly connected to the servo motor via bolts, and the end of the servo motor output shaft is fixedly connected to the stirring roller.

[0012] The present invention proposes an explosion-proof water jetting device, the advantages of which are as follows: through the cooperation of the feed pipe and the sealing structure, a hand is placed in the grooves on both sides of the left baffle, and then the cylinder is inserted into the conical groove. The conical groove makes it easier for the cylinder to enter the feed pipe. Then the baffle is rotated to make the cylinder screw into the feed pipe. When the outer wall of the first elastic sealing ring is pressed against the conical groove, the rotation of the baffle is stopped. This achieves the effect that the first elastic sealing ring and the baffle can prevent flammable and explosive gases or dust from entering the equipment, reduce the possibility of forming an explosive mixture in the equipment, and minimize the occurrence of an explosion.

[0013] With the cooperation of the cover plate and the auxiliary mixing mechanism, the output end of the multi-stage electric telescopic rod retracts, causing the slider to slide along the outer wall of the vertical rods on both sides. This, in turn, drives the stirring roller to move along the second elastic sealing ring. At the same time, the locking block can drive the second elastic sealing ring and the ring to rotate. Therefore, the stirring roller can rotate while moving. The second elastic sealing ring can play a sealing role. When the lower end of the stirring roller is adjacent to the inner wall of the inner barrel, the output end of the multi-stage electric telescopic rod extends. By controlling the reciprocating movement of the output end of the multi-stage electric telescopic rod, the stirring roller can be driven to move up and down. This allows the stirring roller to move up and down, reducing the dead zones of mixing inside the inner barrel. To a certain extent, this allows the water and sand inside the inner barrel to be mixed more thoroughly. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 A front sectional view;

[0016] Figure 3 for Figure 2 A magnified view of part A in the diagram;

[0017] Figure 4 for Figure 2 A magnified view of part B in the diagram;

[0018] Figure 5 for Figure 1 A magnified view of part of C;

[0019] Figure 6 for Figure 3 A three-dimensional schematic diagram of a portion of the central sealing structure;

[0020] Figure 7 This is a side sectional view of the feed pipe.

[0021] In the diagram: 1. Outer barrel, 2. Air inlet pipe, 3. Sealing structure, 301. Baffle, 302. Cylindrical, 303. First elastic sealing ring, 304. Groove, 305. Conical groove, 4. Servo motor, 5. Auxiliary mixing mechanism, 501. Multi-stage electric telescopic rod, 502. Slider, 503. Vertical rod, 504. Locking block, 505. Ring, 506. Second elastic sealing ring, 6. Stirring roller, 7. Inner barrel, 8. Sandblasting head, 9. Discharge pipe, 10. Feed pipe, 11. Cover plate. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] See attached document Figure 1-7 In this embodiment, an explosion-proof water blasting device includes an outer barrel 1 and an inner barrel 7. The inner barrel 7 is fixedly connected to the inner wall of the outer barrel 1. The upper part of the outer barrel 1 is connected to the cover plate 11 by an elastic sealing gasket (not shown in the figure) and multiple bolts. Both sides of the upper part of the cover plate 11 are fixedly connected to feed pipes 10. Each feed pipe 10 is provided with a sealing structure 3. An auxiliary mixing mechanism 5 is provided in the middle of the upper part of the cover plate 11. An air inlet pipe 2 is fixedly connected to the left side of the outer barrel 1. A discharge pipe 9 is fixedly connected to the lower part of the outer barrel 1.

[0024] The discharge pipe 9 is equipped with a sandblasting head 8 at each end. Multiple support legs are fixedly connected to the bottom of the outer barrel 1. A conical groove 305 is machined on the upper part of the inner wall of the feed pipe 10. The slider 502 is threadedly connected to the servo motor 4 by bolts. The output shaft end of the servo motor 4 is fixedly connected to the stirring roller 6.

[0025] The sealing structure 3 includes a baffle 301, a cylinder 302 is fixedly connected to the outer wall of the baffle 301, a first elastic sealing ring 303 is fixedly connected to the upper part of the outer wall of the cylinder 302, the outer wall of the first elastic sealing ring 303 abuts against the conical groove 305, the outer wall of the cylinder 302 is threadedly connected to the feed pipe 10, and grooves 304 are machined on both sides of the baffle 301.

[0026] The auxiliary mixing mechanism 5 includes multi-stage electric telescopic rods 501 and locking blocks 504. The ends of the two multi-stage electric telescopic rods 501 are fixedly connected to the cover plate 11. The output ends of the multi-stage electric telescopic rods 501 are fixedly connected to the slider 502. The inner wall of the slider 502 is slidably connected to the two vertical rods 503. The bottom of the vertical rods 503 is fixedly connected to the cover plate 11. The inner sides of the two locking blocks 504 are fixedly connected to the stirring roller 6. The outer walls of the locking blocks 504 and the stirring roller 6 are pressed against the second elastic sealing ring 506. The second elastic sealing ring 506 and the first elastic sealing ring 303 can both play a sealing role. The outer wall of the second elastic sealing ring 506 is fixedly connected to the ring 505. The outer wall of the ring 505 is rotatably connected to the cover plate 11 through a sealing bearing.

[0027] Working principle:

[0028] When using explosion-proof water jet sandblasting equipment:

[0029] Preparation process:

[0030] The operator first adds water and sand to the inner tank 7 through the feed pipes 10 on both sides (default open state) in a certain ratio. Then, the operator puts their hand into the grooves 304 on both sides of the left baffle 301 and inserts the cylinder 302 into the conical groove 305. The conical groove 305 makes it easier for the cylinder 302 to enter the feed pipe 10. Then, the operator rotates the baffle 301 to screw the cylinder 302 into the feed pipe 10. When the outer wall of the first elastic sealing ring 303 is pressed against the conical groove 305, the operator stops rotating the baffle 301. The operator then repeats the above process to install the right baffle 301. This is to prevent flammable and explosive gases or dust from entering the equipment through the first elastic sealing ring 303 and the baffle 301, thereby reducing the possibility of forming an explosive mixture inside the equipment and minimizing the risk of an explosion.

[0031] Mixing process:

[0032] The servo motor 4 is started, and its output shaft rotates, driving the stirring roller 6 to rotate. The stirring roller 6 can stir the sand and water in the inner cylinder. Then, two multi-stage electric telescopic rods 501 are started simultaneously. The two multi-stage electric telescopic rods 501 are connected to a PLC controller. Through programming and other operations, the two multi-stage electric telescopic rods 501 can be controlled to start and stop simultaneously, and the extension distance of the electric telescopic rods 501 can be precisely controlled. The retraction of the output end of the multi-stage electric telescopic rods 501 causes the slider 502 to slide along the outer wall of the vertical rods 503 on both sides, which in turn drives the stirring roller 6 to move along the second elastic sealing ring 506. The movement of the stirring roller 6, along with the rotation of the second elastic sealing ring 506 and the ring 505 via the locking block 504, allows the stirring roller 6 to rotate while moving. The second elastic sealing ring 506 provides a sealing function. When the lower end of the stirring roller 6 is adjacent to the inner wall of the inner barrel 7, the output end of the multi-stage electric telescopic rod 501 extends. By controlling the reciprocating movement of the output end of the multi-stage electric telescopic rod 501, the stirring roller 6 can be moved up and down. This allows the stirring roller 6 to move up and down, reducing the dead zones in the mixing inside the inner barrel 7. To a certain extent, this allows the water and sand inside the inner barrel 7 to mix more thoroughly.

[0033] Sandblasting process:

[0034] After the water and sand in the inner barrel 7 are mixed, the operator opens the solenoid valve at the discharge port at the bottom of the inner barrel 7, allowing the mixed water and sand to enter the outer barrel 1. Then, the solenoid valve at the discharge port at the bottom of the inner barrel 7 is closed. The left side of the air inlet pipe 2 is connected to an external air compressor, which delivers air to the outer barrel 1 through the air inlet pipe 2. The solenoid valve at the discharge pipe 9 is opened, and the operator holds the sandblasting head 8 and aims it at the workpiece to be sandblasted. As the air pressure inside the outer barrel 1 increases, the mixed water and sand are discharged from the sandblasting head 8. After the workpiece is sandblasted, the operator closes the external air compressor and the solenoid valve at the discharge pipe 9 to stop the material supply.

[0035] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. An explosion-proof water jetting device, comprising an outer barrel (1) and an inner barrel (7), wherein the inner barrel (7) is fixedly connected to the inner wall of the outer barrel (1), characterized in that: The outer barrel (1) is connected to the cover plate (11) above by an elastic sealing gasket and multiple bolts. Both sides of the cover plate (11) are fixedly connected to feed pipes (10). The feed pipes (10) are all equipped with sealing structures (3). The middle part of the cover plate (11) is equipped with an auxiliary mixing mechanism (5). The left side of the outer barrel (1) is fixedly connected to an air inlet pipe (2). The bottom of the outer barrel (1) is fixedly connected to a discharge pipe (9).

2. The explosion-proof water jetting device according to claim 1, characterized in that: The discharge pipe (9) is equipped with a sandblasting head (8) at its end, and multiple support legs are fixedly connected to the bottom of the outer barrel (1).

3. The explosion-proof water jetting device according to claim 1, characterized in that: The sealing structure (3) includes a baffle (301), a cylinder (302) is fixedly connected to the outer wall of the baffle (301), a first elastic sealing ring (303) is fixedly connected to the upper part of the outer wall of the cylinder (302), the outer wall of the first elastic sealing ring (303) abuts against the conical groove (305), the outer wall of the cylinder (302) is threadedly connected to the feed pipe (10), and grooves (304) are machined on both sides of the baffle (301).

4. The explosion-proof water jetting device according to claim 3, characterized in that: The conical groove (305) is machined on the upper part of the inner wall of the feed pipe (10).

5. The explosion-proof water jetting device according to claim 1, characterized in that: The auxiliary mixing mechanism (5) includes a multi-stage electric telescopic rod (501) and a locking block (504). The ends of the two multi-stage electric telescopic rods (501) are fixedly connected to the cover plate (11). The output ends of the multi-stage electric telescopic rods (501) are fixedly connected to the slider (502). The inner wall of the slider (502) is slidably connected to the two vertical rods (503). The bottom of the vertical rods (503) is fixedly connected to the cover plate (11). The inner sides of the two locking blocks (504) are fixedly connected to the stirring roller (6). The outer walls of the locking blocks (504) and the stirring roller (6) are pressed against the second elastic sealing ring (506). The outer wall of the second elastic sealing ring (506) is fixedly connected to the ring (505). The outer wall of the ring (505) is rotatably connected to the cover plate (11) through a sealing bearing.

6. The explosion-proof water jetting device according to claim 5, characterized in that: The slider (502) is threadedly connected to the servo motor (4) by bolts, and the end of the output shaft of the servo motor (4) is fixedly connected to the stirring roller (6).

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