Induced sand blasting gun

Abstract

The invention discloses an induction type sand blasting gun which comprises a wind tunnel gun body and a wear-resistant sand blasting pipe installed on the wind tunnel gun body. The induction ejector comprises a wear-resistant induction ring, the wear-resistant induction ring is mounted at a nozzle part of the wear-resistant sand blasting pipe, the wear-resistant induction ring and the wear-resistant sand blasting pipe are coaxially arranged, an air injection assembly is mounted at the end, close to the wear-resistant sand blasting pipe, of the wear-resistant induction ring, and the air injection assembly communicates with the wear-resistant induction ring; an output port of the air injection assembly is parallel to the inner wall of the wear-resistant induction ring, an air supply bridge pipe is installed on the air injection assembly, and one end of the air supply bridge pipe fixedly communicates with an air supply pipe of the wind tunnel gun. Wherein the air supply bridge pipe is provided with a pressure regulating mechanism, and the pressure regulating mechanism is used for controlling the air supply pressure. The air jet flow sprayed by the air nozzle has an energy gathering effect on the sand blasting jet flow flowing in the same direction, so that the problem of divergence of the sand blasting jet flow of the wind tunnel gun is inhibited, and the original problems of jet flow divergence and non-concentrated energy are improved.

Description

Technical Field

[0001] The invention relates to the technical field of pneumatic sandblasting technology, in particular to an induction sandblasting gun. Background Art

[0002] Dynamic sandblasting equipment is divided into two types of sandblasting principles: pressure-feeding and suction-feeding according to the property that the air pressure of the sand introduced into the sandblasting hose is higher or lower than the atmospheric pressure. The corresponding sandblasting equipment is also divided into two categories: pressure-feeding and suction-feeding.

[0003] Pressure-feed sandblasting machine. The sand is loaded into a high-pressure sand tank, and the sand flows into the mixing tee through the sand valve at the bottom of the sand tank. Another high-pressure airflow mixes with the sand in the mixing tee and enters the sandblasting hose at a pressure higher than the ambient atmospheric pressure. A sandblasting jet is formed at the other end of the sandblasting hose through a necked nozzle. This type of machine is referred to as a sandblasting machine, and one of its characteristics is that it must be equipped with a bulky high-pressure sand storage tank. The advantage of a sandblasting machine is its high working efficiency, but the equipment is bulky, the machine needs to be shut down for sand loading, it is labor-intensive, and it is inconvenient to use.

[0004] Suction-type sandblasting machine, referred to as sandblasting gun. It is actually an application of pneumatic vacuum ejector in sandblasting technology. The negative pressure end of the sandblasting gun is sealed and connected to a sand suction hose. The other end of the hose attracts air and sand. The ejected air is used as a carrier for conveying sand, and the working sandblasting jet is sprayed out at the outlet of the ejector. At this time, the diffuser tube as the outlet of the ejector is replaced with a wear-resistant sandblasting tube. The requirements of the sandblasting gun are stricter and more comprehensive than those of the ejector. It has higher requirements on the speed and sand output of the sandblasting jet at the outlet, and also has higher requirements on the negative pressure and air intake at the negative pressure end. The advantages of the sandblasting gun are simple structure and easy use, but the disadvantage is that the performance efficiency is generally low. The low efficiency is manifested in two aspects. On the one hand, the sand flow rate is small, and on the other hand, the sand particle speed is low.

[0005] The prior art proposes to use a wind tunnel gun, which adopts an innovative air nozzle structure and a supersonic target design, and the sandblasting efficiency is greatly improved compared with an ordinary sandblasting gun. The length of the supersonic airflow in the wear-resistant sandblasting tube of the wind tunnel gun is only about half of the length of the wear-resistant sandblasting tube. If the supersonic airflow can be extended, the speed of the sand particles and the sandblasting efficiency can be further improved. Although the longer expansion section of the wear-resistant sandblasting tube ensures the uniformity of the sand output and speed, in actual sandblasting, the sandblasting jet continues to diverge along the expansion angle direction after the outlet, and the non-concentration of the jet energy also affects the further improvement of the sandblasting efficiency. Based on this, the present invention provides an induction sandblasting gun. Summary of the invention

[0006] The purpose of the present invention is to provide an induction sandblasting gun to solve the problems existing in the prior art.

[0007] To achieve the above object, the present invention provides the following solution: The present invention provides an induction sandblasting gun, comprising:

[0008] A wind tunnel gun, the wind tunnel gun comprising a wind tunnel gun body and a wear-resistant sandblasting tube mounted on the wind tunnel gun body;

[0009] An induced ejector, the induced ejector comprising a wear-resistant induction ring, the wear-resistant induction ring being installed at the nozzle portion of the wear-resistant sandblasting tube, and the wear-resistant induction ring and the wear-resistant sandblasting tube being coaxially arranged, an injection assembly being installed at one end of the wear-resistant induction ring close to the wear-resistant sandblasting tube, the injection assembly being communicated with the wear-resistant induction ring, and the output port of the injection assembly being arranged parallel to the inner wall of the wear-resistant induction ring, an air supply bridge pipe being installed on the injection assembly, and one end of the air supply bridge pipe being fixedly communicated with the air supply pipe of the wind tunnel gun;

[0010] Wherein, a pressure regulating mechanism is installed on the air supply bridge pipe, and the pressure regulating mechanism is used to control the air supply pressure.

[0011] According to the induction sandblasting gun provided by the present invention, the inner wall of the wear-resistant sandblasting tube is arranged into a contraction section, a straight section and an expansion section along the spraying direction, and the length of the expansion section is greater than that of the contraction section and the straight section.

[0012] According to the induced sandblasting gun provided by the present invention, the wear-resistant induction ring includes a wear-resistant cone tube and a connecting tube, the inner diameter of the connecting tube is equal to the smaller diameter end of the wear-resistant cone tube, the larger diameter end of the wear-resistant cone tube abuts against the jet assembly, and the inner diameter of the larger diameter end of the wear-resistant cone tube is greater than the inner diameter of the extended section of the wear-resistant sandblasting tube.

[0013] According to the induced sandblasting gun provided by the present invention, the jet assembly includes a compressed air distribution ring, an annular interlayer is arranged inside the compressed air distribution ring, an air cavity is formed between the annular interlayer and the compressed air distribution ring, the air supply bridge pipe is connected with the air cavity, an annular slit is opened on the side wall of the air cavity, the annular slit is connected with the annular slit and the wear-resistant cone tube, and the jet direction of the annular slit is arranged parallel to the inner wall of the wear-resistant cone tube.

[0014] According to the induced sandblasting gun provided by the present invention, the pressure regulating mechanism includes a pressure regulator body, an air inlet and an air outlet are symmetrically opened on the side of the pressure regulator body, the air inlet and the air outlet are both connected to the air supply bridge pipe, a pressure relief port is opened at the bottom of the pressure regulator body, a sealing component is slidably connected in the pressure regulator body, the sealing component is corresponding to the air inlet, the air outlet and the pressure relief port, an adjusting component is installed on the top of the pressure regulator body, and the sealing component is rotatably connected to the adjusting component.

[0015] According to the induced sandblasting gun provided by the present invention, the sealing component includes a sealing block, a sealing ring is fixedly connected to the inner wall of the pressure regulator body, the sealing ring is sleeved on the outer wall of the sealing block, the air inlet end of the air inlet and the air outlet end of the air outlet are respectively located at the upper and lower sides of the sealing ring, a sliding hole is opened at the bottom of the sealing block, a sliding rod is slidably connected in the sliding hole, a sealing head is fixedly connected to the bottom of the sliding rod, the sealing head and the pressure relief port are correspondingly arranged, a spring is sleeved on the sliding rod, and the two ends of the spring are respectively fixedly connected to the sealing head and the sealing block; a sleeve is fixedly connected to the top of the sealing head, and the adjusting component is slidably connected to the sleeve.

[0016] According to the induced sandblasting gun provided by the present invention, the adjustment component includes a magnetic head detachably connected to the top of the voltage regulator body, a connecting rod is fixedly connected to the bottom of the magnetic head, the connecting rod is inserted into the sleeve, a magnetic seat is installed at the top of the sleeve, and the magnetic head is correspondingly arranged to the magnetic seat.

[0017] According to the induction sandblasting gun provided by the present invention, annular grooves are respectively provided on the outer wall of the blocking block and the outer wall of the magnetic suction head, and sealing rubber rings are installed in the annular grooves.

[0018] The present invention discloses the following technical effects:

[0019] The negative pressure end of the induced ejector of the present invention acts on the outlet of the wear-resistant sandblasting tube, thereby reducing the background pressure at the outlet of the wear-resistant sandblasting tube. The shock wave appearing in the wear-resistant sandblasting tube of the wind tunnel gun is induced to be delayed and even led out of the tube outlet of the wear-resistant sandblasting tube, thereby extending the length of the supersonic airflow in the wear-resistant sandblasting tube. The sand particles are more fully accelerated in the extended supersonic airflow, thereby increasing the sand particle speed at the outlet of the sandblasting gun.

[0020] The jet jetted from the jet nozzle of the present invention has an energy gathering effect on the sandblasting jet flowing in the same direction, so the divergence problem of the wind tunnel gun sandblasting jet is suppressed, so that the original problems of jet divergence and energy non-concentration are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of the induction-type sandblasting gun of the present invention;

[0023] Figure 2It is a structural schematic diagram of the voltage regulating mechanism of the present invention.

[0024] Among them, 1. wind tunnel gun; 101. wear-resistant sandblasting tube; 2. induced ejector; 201. wear-resistant induction ring; 202. wear-resistant cone tube; 203. air supply bridge tube; 204. compressed air distribution ring; 205. air nozzle; 3. pressure regulating mechanism; 301. pressure regulator body; 302. air inlet; 303. air outlet; 304. pressure relief port; 305. sealing block; 306. sealing ring; 307. sliding hole; 308. sliding rod; 309. sealing head; 310. spring; 311. sleeve; 312. magnetic suction head; 313. connecting rod; 314. sealing rubber ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Reference Figure 1-Figure 2 The present invention provides an induction sandblasting gun, comprising:

[0028] A wind tunnel gun 1, the wind tunnel gun 1 comprises a wind tunnel gun 1 body and a wear-resistant sandblasting tube 101 installed on the wind tunnel gun 1 body;

[0029] The induced ejector 2 includes a wear-resistant induced ring 201, which is installed at the nozzle part of the wear-resistant sandblasting tube 101, and the wear-resistant induced ring 201 and the wear-resistant sandblasting tube 101 are coaxially arranged, and an injection assembly is installed at one end of the wear-resistant induced ring 201 close to the wear-resistant sandblasting tube 101, and the injection assembly is connected with the wear-resistant induced ring 201, and the output port of the injection assembly is arranged parallel to the inner wall of the wear-resistant induced ring 201, and an air supply bridge pipe 203 is installed on the injection assembly, and one end of the air supply bridge pipe 203 is fixedly connected with the air supply pipe of the wind tunnel gun 1;

[0030] A pressure regulating mechanism 3 is installed on the air supply bridge pipe 203, and the pressure regulating mechanism 3 is used to control the air supply pressure.

[0031] The negative pressure end of the induced ejector 2 of the present invention acts on the outlet of the wear-resistant sandblasting tube 101, reducing the background pressure at the outlet of the wear-resistant sandblasting tube 101. The shock wave appearing in the wear-resistant sandblasting tube 101 of the wind tunnel gun 1 is induced to be delayed or even led out of the tube mouth of the wear-resistant sandblasting tube 101, thereby extending the length of the supersonic airflow in the wear-resistant sandblasting tube 101. The sand particles are more fully accelerated in the extended supersonic airflow, thereby increasing the sand particle speed at the outlet of the sandblasting gun.

[0032] Secondly, the jet jetted from the air nozzle 205 has an energy gathering effect on the sandblasting jet flowing in the same direction, so the divergence problem of the sandblasting jet of the wind tunnel gun 1 is suppressed, so that the original problems of jet divergence and energy non-concentration are improved.

[0033] Further optimization scheme, the inner wall of the wear-resistant sandblasting tube 101 is arranged along the spraying direction as a contraction section, a straight section and an expansion section, and the expansion section is longer than the contraction section and the straight section. The purpose of such design is to better utilize the high-speed characteristics of supersonic airflow.

[0034] A further optimized solution is that the wear-resistant induction ring 201 includes a wear-resistant tapered tube 202 and a connecting tube. The inner diameter of the connecting tube is equal to the smaller diameter end of the wear-resistant tapered tube 202. The larger diameter end of the wear-resistant tapered tube 202 abuts against the jet assembly, and the inner diameter of the larger diameter end of the wear-resistant tapered tube 202 is greater than the inner diameter of the extended section of the wear-resistant sandblasting tube 101.

[0035] A further optimized solution is that the jet assembly includes a compressed air distribution ring 204, an annular interlayer is arranged inside the compressed air distribution ring 204, an air cavity is formed between the annular interlayer and the compressed air distribution ring 204, the air supply bridge pipe 203 is connected to the air cavity, an annular slit 205 is opened on the side wall of the air cavity, the annular slit 205 is connected to the annular slit 205 and the wear-resistant cone tube 202, and the jet direction of the annular slit 205 is arranged parallel to the inner wall of the wear-resistant cone tube 202.

[0036] The compressed air in the compressed air distribution ring 204 is input into the wear-resistant cone tube 202 through the annular slit 205 . The jetting direction is the same as the sandblasting jet and converges at a small angle toward the axis of the wear-resistant sandblasting tube 101 .

[0037] In this embodiment, the annular gap 205 can also be replaced by independent air jets installed on the side wall of the air cavity at equal axial intervals.

[0038] A further optimized solution is provided, in which the pressure regulating mechanism 3 comprises a pressure regulator body 301, and an air inlet 302 and an air outlet 303 are symmetrically provided on the side of the pressure regulator body 301, and the air inlet 302 and the air outlet 303 are both connected to the air supply bridge pipe 203, and a pressure relief port 304 is provided at the bottom of the pressure regulator body 301, and a sealing component is slidably connected inside the pressure regulator body 301, and the sealing component is arranged corresponding to the air inlet 302, the air outlet 303 and the pressure relief port 304, and an adjusting component is installed on the top of the pressure regulator body 301, and the sealing component is rotatably connected to the adjusting component.

[0039] A further optimized solution is provided, in which the blocking component includes a blocking block 305, a blocking ring 306 is fixedly connected to the inner wall of the voltage regulator body 301, and the blocking ring 306 is sleeved on the outer wall of the blocking block 305. The air inlet end of the air inlet 302 and the air outlet end of the air outlet 303 are respectively located on the upper and lower sides of the blocking ring 306. A sliding hole 307 is provided at the bottom of the blocking block 305, and a sliding rod 308 is slidably connected in the sliding hole 307. A blocking head 309 is fixedly connected to the bottom of the sliding rod 308, and the blocking head 309 is correspondingly arranged with the pressure relief port 304. A spring 310 is sleeved on the sliding rod 308, and the two ends of the spring 310 are respectively fixedly connected to the blocking head 309 and the blocking block 305; a sleeve 311 is fixedly connected to the top of the blocking head 309, and the adjusting component and the sleeve 311 are rotatably connected.

[0040] A further optimized solution is that the adjustment component includes a magnetic head 312 detachably connected to the top of the voltage regulator body 301, a connecting rod 313 is fixedly connected to the bottom of the magnetic head 312, the connecting rod 313 is inserted into the sleeve 311, a magnetic seat is installed at the top of the sleeve 311, and the magnetic head 312 is correspondingly arranged with the magnetic seat.

[0041] According to a further optimized solution, an annular groove is respectively formed on the outer wall of the blocking block 305 and the outer wall of the magnetic suction head 312, and a sealing rubber ring 314 is installed in the annular groove.

[0042] The air supply bridge pipe 203 adopts a segmented design, one section is connected to the air inlet 302 of the voltage regulator body 301, and the other section is connected to the air outlet 303. When in use, the magnetic suction head 312 is energized to generate magnetic force to attract the magnetic suction seat, guide the magnetic suction seat to drive the blocking block 305 to move upward, and at the same time, under the action of the spring 310, the blocking head 309 still forms an extrusion and blocking effect on the pressure relief port 304. When the blocking block 305 and the blocking ring 306 are misaligned, the air inlet 302 and the outlet are connected. The air port 303 is connected, so that the air inlet 302 is connected with the air outlet 303, and the pressure relief port 304 is closed. The gas in the air supply pipe of the wind tunnel gun 1 enters the regulator body 301 through the air supply bridge pipe 203. When the air pressure needs to be adjusted, a strong magnetic field is generated instantly through the magnetic seat, pulling the magnetic seat and the plugging head 309 to the top instantly. At this time, the block pulls the spring 310 and the plugging head 309, so that the pressure relief port 304 is fully opened, thereby allowing the gas to leak out.

[0043] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. Induction sandblasting gun, characterized in that: include: A wind tunnel gun (1), the wind tunnel gun (1) comprising a wind tunnel gun (1) body and a wear-resistant sandblasting tube (101) mounted on the wind tunnel gun (1) body; An induced ejector (2), the induced ejector (2) comprising a wear-resistant induced ring (201), the wear-resistant induced ring (201) being mounted on the nozzle portion of the wear-resistant sandblasting tube (101), and the wear-resistant induced ring (201) and the wear-resistant sandblasting tube (101) being coaxially arranged, an injection assembly being mounted on one end of the wear-resistant induced ring (201) close to the wear-resistant sandblasting tube (101), the injection assembly being in communication with the wear-resistant induced ring (201), and an output port of the injection assembly being arranged parallel to an inner wall of the wear-resistant induced ring (201), an air supply bridge pipe (203) being mounted on the injection assembly, and one end of the air supply bridge pipe (203) being fixedly connected to an air supply pipe of the wind tunnel gun (1); Wherein, a pressure regulating mechanism (3) is installed on the air supply bridge pipe (203), and the pressure regulating mechanism (3) is used to control the air supply pressure.

2. The induced sandblasting gun according to claim 1, characterized in that: The inner wall of the wear-resistant sandblasting tube (101) is arranged along the spraying direction as a contraction section, a straight section and an expansion section, and the expansion section is longer than the contraction section and the straight section.

3. The induced sandblasting gun according to claim 2, characterized in that: The wear-resistant induction ring (201) comprises a wear-resistant cone tube (202) and a connecting tube, wherein the inner diameter of the connecting tube is equal to the smaller diameter end of the wear-resistant cone tube (202), the larger diameter end of the wear-resistant cone tube (202) abuts against the jet assembly, and the inner diameter of the larger diameter end of the wear-resistant cone tube (202) is greater than the inner diameter of the extended section of the wear-resistant sandblasting tube (101).

4. The induction sandblasting gun according to claim 3, characterized in that: The jet assembly comprises a compressed air distribution ring (204), an annular interlayer is arranged inside the compressed air distribution ring (204), an air cavity is formed between the annular interlayer and the compressed air distribution ring (204), the air supply bridge pipe (203) is connected to the air cavity, an annular slit (205) is opened on the side wall of the air cavity, the annular slit (205) is connected to the annular slit (205) and the wear-resistant cone tube (202), and the jetting direction of the annular slit (205) is arranged parallel to the inner wall of the wear-resistant cone tube (202).

5. The induction sandblasting gun according to claim 1, characterized in that: The pressure regulating mechanism (3) comprises a pressure regulator body (301), the side of the pressure regulator body (301) is symmetrically provided with an air inlet (302) and an air outlet (303), the air inlet (302) and the air outlet (303) are both connected to the air supply bridge pipe (203), the bottom of the pressure regulator body (301) is provided with a pressure relief port (304), a sealing component is slidably connected inside the pressure regulator body (301), the sealing component is correspondingly arranged with the air inlet (302), the air outlet (303) and the pressure relief port (304), and an adjusting component is installed at the top of the pressure regulator body (301), and the sealing component is rotatably connected with the adjusting component.

6. The induction sandblasting gun according to claim 5, characterized in that: The blocking assembly comprises a blocking block (305), the inner wall of the voltage regulator body (301) is fixedly connected with a blocking ring (306), the blocking ring (306) is sleeved on the outer wall of the blocking block (305), the air inlet end of the air inlet (302) and the air outlet end of the air outlet (303) are respectively located at the upper and lower sides of the blocking ring (306), the bottom of the blocking block (305) is provided with a sliding hole (307), and a sliding rod (307) is slidably connected in the sliding hole (307). 8), a plugging head (309) is fixedly connected to the bottom of the sliding rod (308), and the plugging head (309) is correspondingly arranged between the pressure relief port (304), and a spring (310) is sleeved on the sliding rod (308), and the two ends of the spring (310) are respectively fixedly connected to the plugging head (309) and the plugging block (305); a sleeve (311) is fixedly connected to the top of the plugging head (309), and the adjusting component is slidably connected to the sleeve (311).

7. The induction sandblasting gun according to claim 6, characterized in that: The regulating assembly comprises a magnetic head (312) detachably connected to the top of the voltage regulator body (301); a connecting rod (313) is fixedly connected to the bottom of the magnetic head (312); the connecting rod (313) is inserted into the sleeve (311); a magnetic seat is installed at the top of the sleeve (311); and the magnetic head (312) and the magnetic seat are arranged correspondingly.

8. The induction sandblasting gun according to claim 7, characterized in that: The outer wall of the blocking block (305) and the outer wall of the magnetic suction head (312) are respectively provided with an annular groove, and a sealing rubber ring (314) is installed in the annular groove.

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