A sandblasting device for scroll tube experiments
By designing a sandblasting device for vortex tube experiments and using a motor to control the turntable speed and the structure of the stirring frame, the quantitative and uniform injection of sand material in vortex tube sandblasting experiments was achieved. This solved the problem of low efficiency caused by complex manual operation, improved experimental efficiency, and ensured the safety and stability of the device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN TIANLU JIAHANG TECH CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-06-05
AI Technical Summary
In existing vortex tube sandblasting experiments, the method of manually injecting sand requires a high level of operational experience, resulting in low experimental efficiency.
A sandblasting device for vortex tube experiments was designed, including a base, a turntable, a discharge pipe, a suction pipe, and a discharge hopper. The turntable speed and sand quantity are controlled by a motor. Combined with a mixing frame and scraper structure, the sand is quantitatively and uniformly injected and mixed.
It improves the efficiency of vortex tube sandblasting experiments, ensures the safety and stability of the device, and reduces the difficulty of operation and the risk of sand agglomeration.
Smart Images
Figure CN224322953U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of vortex tube technology, and in particular to a sandblasting device for vortex tube experiments. Background Technology
[0002] Some industrial equipment needs to operate for extended periods in harsh environments such as sandstorms. Foreign matter in these conditions can be sucked into the engine, causing fatal damage to downstream moving parts, and in severe cases, even engine shutdown. Currently, air separation and purification devices incorporating vortex tubes are commonly used to address the threat posed by foreign matter to engines and other components.
[0003] During the production of vortex tubes, sandblasting experiments are required to verify the erosion resistance and separation efficiency of the vortex tubes. Sandblasting experiments usually involve manually injecting standard sand into the air pipe connected to the compressed air pipeline. After mixing, the sand is injected into the vortex tube.
[0004] The existing technical solutions mentioned above have the following drawbacks: the method of manually injecting sand requires a high level of operational experience from the staff and is inefficient when conducting multiple experiments consecutively. Utility Model Content
[0005] This application provides a sandblasting device for vortex tube experiments to facilitate and improve experimental efficiency.
[0006] The above-mentioned technical objective of this application is achieved through the following technical solution:
[0007] A sandblasting device for vortex tube experiments includes a base, a first motor installed inside the base, a turntable rotatably mounted on the base, the output shaft of the first motor connected to the turntable, a material discharge groove on the turntable, at least two material discharge grooves spaced apart, a discharge pipe fixedly connected to the base, an air inlet pipe connected to the peripheral wall of the discharge pipe, a suction pipe connected to one end of the discharge pipe, one end of the suction pipe located above the turntable, a pressure plate fixedly connected to one end of the suction pipe, one side of the pressure plate adhering to the turntable, a material hopper fixedly connected to the base, the bottom of the material hopper adhering to the turntable, and a material discharge port at the bottom of the material hopper.
[0008] By adopting the above technical solution, the pressure plate can block excess sand from being pushed away at the opening of the discharge trough, ensuring that the volume of sand in the discharge trough below the pressure plate is uniform. Compressed air in the air inlet pipe flows rapidly into the vortex tube through the discharge pipe, creating a negative pressure near the suction pipe. This causes the sand in the discharge trough near the pressure plate end of the suction pipe to be sucked into the suction pipe and mixed with the compressed air in the discharge pipe. By controlling the speed of the first motor to adjust the speed of the turntable, the number of sand-filled discharge troughs passing under the suction pipe end within a fixed time is controlled, thereby controlling the speed at which the suction pipe sucks in sand. The discharge troughs containing a fixed volume of sand facilitate the operator's control of the amount of sand sprayed by the sandblasting device. It also facilitates the operator to evenly inject a quantitative amount of sand into the air pipe connected to the compressed air pipeline, mix it, and then inject it into the vortex tube, which is convenient for conducting vortex tube sandblasting experiments and improves experimental efficiency.
[0009] Optionally, the surface of the pressure plate is trapezoidal.
[0010] By adopting the above technical solution, the platen surface is trapezoidal, which can push excess sand on the turntable to the edge and center of the turntable away from the discharge chute, thereby improving the accuracy of the sandblasting device in quantitatively measuring the volume of sand in the discharge chute.
[0011] Optionally, the edge of the pressure plate is bent away from the base.
[0012] By adopting the above technical solution, the edge bending of the pressure plate can reduce the resistance to the rotation of the turntable caused by the friction between the sand on the turntable and the edge of the pressure plate, thus ensuring the smooth rotation of the turntable and the stability of the turntable rotation.
[0013] Optionally, a mounting frame is fixedly connected to the hopper, a second motor is mounted on the mounting frame, the output shaft of the second motor is connected to a stirring frame, and the stirring frame is rotatably disposed inside the hopper.
[0014] By adopting the above technical solution, the second motor on the mounting frame drives the mixing frame to rotate, which can agitate the sand in the hopper, reduce the risk of the sand in the hopper becoming damp and clumping, thus preventing the sand from falling smoothly, and ensure that the sand in the hopper falls evenly into the discharge trough of the turntable, thus ensuring the safety and stability of the sandblasting device.
[0015] Optionally, a stirring plate is fixedly connected to the stirring rack, and the stirring plate is slidably connected to the inner wall of the hopper.
[0016] By adopting the above technical solution, the mixing plate can rotate with the mixing frame against the inner wall of the hopper, reducing the risk of the sand in the hopper being damp and sticking to the inner wall of the hopper, and ensuring that the sand in the hopper falls evenly into the discharge trough of the turntable.
[0017] Optionally, a filter cover is fixedly connected to the hopper, and the filter cover has sieve holes.
[0018] By adopting the above technical solution, the sieve holes on the filter cover can prevent larger particles in the sand from falling into the hopper, reducing the operational disruptions and damage caused by larger diameter sand entering the sandblasting device, and ensuring the safety and stability of the sandblasting device.
[0019] Optionally, the output shaft of the second motor is connected to a stirring rod, a collection box is fixedly connected to the hopper, and a collection port is opened on the peripheral wall of the hopper.
[0020] By adopting the above technical solution, the larger diameter sand material screened out by the filter cover rolls to the connection between the filter cover and the hopper. The second motor drives the stirring rod to rotate, which can push the larger sand material to the collection port and fall into the collection box, reducing the accumulation of sand material on the filter cover and making it easier for staff to clean the sandblasting device.
[0021] Optionally, a support plate is fixedly connected to the base, a first scraper is fixedly connected to the support plate, a second scraper is fixedly connected to the first scraper, and a third scraper is fixedly connected to the second scraper.
[0022] By adopting the above technical solution, the first scraper can push the sand at the edge of the turntable into the discharge trough, the second scraper can push the sand at the center of the turntable into the discharge trough, and at the same time reduce the resistance to the rotation of the turntable when the sand accumulates on the turntable and rubs against the pressure plate. The third scraper can work with the first and second scrapers to scrape the sand recovered into the discharge trough flat, reduce the resistance to the rotation of the turntable when the sand accumulates at the opening of the discharge trough and rotates to the bottom of the discharge hopper, improve the sand recovery rate on the turntable, and ensure the safety and stability of the sandblasting device.
[0023] In summary, this application has the following technical effects:
[0024] 1. By setting up a first motor, turntable, discharge pipe, suction pipe and drop hopper, the rotation speed of the first motor is controlled to adjust the rotation speed of the turntable, and the number of drop troughs filled with sand passing under one end of the suction pipe within a fixed time is controlled to control the speed at which the suction pipe sucks in the sand. The drop troughs filled with a fixed volume of sand make it easy for the operator to control the amount of sand sprayed by the sandblasting device, and it is easy for the operator to evenly inject a quantitative amount of sand into the air pipe connected to the compressed air pipeline, mix it and then inject it into the vortex tube, which facilitates the vortex tube sandblasting experiment and improves the experimental efficiency.
[0025] 2. By setting up an installation frame, a second motor and a mixing frame, the second motor on the installation frame drives the mixing frame to rotate, which can agitate the sand in the hopper, reduce the risk of the sand in the hopper becoming damp and clumping, which would cause the sand to fall unevenly, and ensure that the sand in the hopper falls evenly into the discharge trough of the turntable, thus ensuring the safety and stability of the sandblasting device.
[0026] 3. By setting up a mixing plate, the mixing plate can rotate with the mixing frame to fit the inner wall of the hopper, reducing the risk of the sand in the hopper being damp and sticking to the inner wall of the hopper, and ensuring that the sand in the hopper falls evenly into the discharge chute of the turntable. Attached Figure Description
[0027] Figure 1 This is a structural diagram of the object of this application;
[0028] Figure 2 This is a structural diagram of this application after it has been opened;
[0029] Figure 3 This is a prominent structural diagram of the discharge pipe and suction pipe of this application;
[0030] Figure 4 This is a cross-sectional structural diagram of the hopper, mounting frame, filter cover and collection box of this application;
[0031] Figure 5 This is a prominent structural diagram of the turntable, support plate, first scraper, second scraper, and third scraper of this application.
[0032] Explanation of reference numerals in the attached drawings: 1. Base; 11. Housing; 12. First motor; 13. Support plate; 14. First scraper; 15. Second scraper; 16. Third scraper; 2. Turntable; 21. Material chute; 3. Discharge pipe; 31. Air inlet pipe; 4. Suction pipe; 41. Pressure plate; 5. Discharge hopper; 51. Discharge port; 6. Mounting frame; 61. Second motor; 62. Mixing frame; 63. Mixing plate; 7. Filter cover; 71. Screen hole; 72. Mixing rod; 8. Collection box; 81. Collection port. Detailed Implementation
[0033] The present application will be further described in detail below with reference to the accompanying drawings.
[0034] This application discloses a sandblasting device for vortex tube experiments, referring to... Figure 1 and Figure 2 The sandblasting device includes a base 1, on which a housing 11 is fixed by bolts. A first motor 12 is installed inside the base 1. The output shaft of the first motor 12 extends out of the top surface of the base 1 and is connected to a turntable 2 via a coupling. The turntable 2 is rotatably connected to the top surface of the base 1. A material drop groove 21 is provided on the turntable 2. The material drop groove 21 is a strip-shaped groove and multiple grooves are provided at intervals along the turntable 2. The multiple material drop grooves 21 are symmetrically arranged with the center of the top surface of the turntable 2 as the center.
[0035] Reference Figure 2 and Figure 3A discharge pipe 3 is bolted to the side of the base 1 away from the turntable 2. One end of the discharge pipe 3 is connected to a vortex tube, and the other end of the discharge pipe 3 is connected to a suction pipe 4. An air inlet pipe 31 is connected to the peripheral wall of the discharge pipe 3. The end of the air inlet pipe 31 away from the discharge pipe 3 is connected to a compressed air source. The end of the suction pipe 4 away from the discharge pipe 3 is bent toward the turntable 2. The opening of the suction pipe 4 away from the discharge pipe 3 can cover at least two drop troughs 21. A pressure plate 41 is welded to the peripheral wall of the suction pipe 4 near the turntable 2. The surface of the pressure plate 41 is trapezoidal. The surface of the pressure plate 41 away from the suction pipe 4 is attached to and slidably connected to the top surface of the turntable 2. The edge of the pressure plate 41 is bent away from the base 1.
[0036] Reference Figure 2 and Figure 4 A hopper 5 is fixed to the base 1 by bolts. The hopper 5 is located inside the housing 11 and the top of the hopper 5 extends out of the top of the housing 11. The bottom of the hopper 5 is located above the turntable 2 on the side away from the discharge pipe 3. The bottom of the hopper 5 is slidably connected to the top surface of the turntable 2. The bottom of the hopper 5 has a strip-shaped discharge port 51. The discharge port 51 is located above the discharge trough 21 and can cover at least two discharge troughs 21.
[0037] Reference Figure 4 A mounting frame 6 is bolted to the top of the hopper 5. A second motor 61 is mounted on the mounting frame 6. The output shaft of the second motor 61 is connected to a stirring frame 62 via a key. The stirring frame 62 is located inside the hopper 5. The bottom of the stirring frame 62 is slidably connected to the bottom of the hopper 5. Stirring plates 63 are adhered to the side walls of the stirring frame 62 near the inner wall of the hopper 5. In this embodiment, the stirring plates 63 are made of elastic material. The side of the stirring plate 63 away from the stirring frame 62 is slidably connected to the inner wall of the hopper 5.
[0038] Reference Figure 4 A filter cover 7 is bolted to the top of the hopper 5. The filter cover 7 covers the hopper 5 and has a raised center. The filter cover 7 has multiple sieve holes 71 spaced apart. A stirring rod 72 is connected to the section of the output shaft of the second motor 61 away from the stirring frame 62. The peripheral wall of the stirring rod 72 is attached to the top surface of the filter cover 7. The end of the stirring rod 72 away from the second motor 61 is attached to the inner wall of the hopper 5. A collection port 81 is provided on the peripheral wall of the hopper 5 near the filter cover 7. The collection port 81 is located on the top of the filter cover 7 near the hopper 5. A collection box 8 is bolted to the peripheral wall of the hopper 5. The top of the collection box 8 has an opening located below the collection port 81.
[0039] Reference Figure 2 and Figure 5A support plate 13 is bolted to the base 1. A first scraper 14 is bolted to the top of the support plate 13. The first scraper 14 is slidably connected to the top surface of the turntable 2 at a section away from the support plate 13. One end of the first scraper 14 is located above the edge of the material chute 21 near the edge of the turntable 2. The other end of the first scraper 14 is located at the edge of the top surface of the turntable 2. A second scraper 15 is welded to the end of the first scraper 14 away from the support plate 13. The second scraper 15 is slidably connected to the top surface of the turntable 2 and located above the material chute 21. A third scraper 16 is welded to the end of the second scraper 15 away from the first scraper 14. The third scraper 16 is slidably positioned above the turntable 2. The end of the third scraper 16 away from the second scraper 15 is located at the center of the turntable 2. The first scraper 14, the second scraper 15 and the third scraper 16 are connected in a U-shape with the opening facing the discharge pipe 3.
[0040] When using this sandblasting device, connect the end of the discharge pipe 3 away from the suction pipe 4 to the vortex tube to be tested. Start the first motor 12 to drive the turntable 2 to rotate, and add sand into the discharge hopper 5. The sand falls from the discharge port 51 at the bottom of the discharge hopper 5 into the discharge trough 21. When the discharge trough 21 rotates with the turntable 2 to the discharge port 51, it is filled with the falling sand. The discharge trough 21 filled with sand continues to rotate with the turntable 2 to the pressure plate 41. The pressure plate 41 can prevent excess sand at the opening of the discharge trough 21 from being pushed away, so that the volume of sand in the discharge trough 21 below the pressure plate 41 is the same. The compressed air in the air inlet pipe 31 flows rapidly into the vortex tube through the discharge pipe 3, and can be discharged through the discharge pipe. A negative pressure is formed near the suction pipe 4, causing the sand and gravel in the drop trough 21 near the pressure plate 41 of the suction pipe 4 to be sucked into the suction pipe 4 and enter the discharge pipe 3 to mix with compressed air. The rotation speed of the turntable 2 is adjusted by controlling the rotation speed of the first motor 12, and the number of drop troughs 21 filled with sand passing under one end of the suction pipe 4 within a fixed time is controlled to control the speed at which the suction pipe 4 sucks in sand. The drop trough 21 filled with a fixed volume of sand makes it easy for the operator to control the amount of sand and gravel sprayed by the sandblasting device, and makes it easy for the operator to evenly inject a quantitative amount of sand into the air pipe connected to the compressed air pipeline, mix it and then inject it into the vortex tube, which facilitates the vortex tube sandblasting experiment and improves the experimental efficiency.
[0041] The pressure plate 41 has a trapezoidal surface, which can push excess sand on the turntable 2 to the edge and center of the turntable 2 away from the discharge chute 21, improving the accuracy of the sandblasting device in quantitatively measuring the volume of sand in the discharge chute 21. The curved edge of the pressure plate 41 can reduce the resistance to the rotation of the turntable 2 caused by the friction between the sand on the turntable 2 and the edge of the pressure plate 41, ensuring the smooth rotation and stability of the turntable 2.
[0042] The first scraper 14 can push the sand on the edge of the turntable 2 into the discharge trough 21, which makes it easier to reuse the sand on the turntable 2. At the same time, it reduces the resistance to the rotation of the turntable 2 when the sand accumulates on the turntable 2 and rubs against the pressure plate 41, ensuring the smooth rotation of the turntable 2 and ensuring the safety and stability of the sandblasting device.
[0043] The second scraper 15 can push the sand at the center of the turntable 2 into the discharge trough 21, which makes it easier to reuse the sand on the turntable 2. At the same time, it reduces the resistance to the rotation of the turntable 2 when the sand accumulates on the turntable 2 and rubs against the pressure plate 41, ensuring the smooth rotation of the turntable 2 and ensuring the safety and stability of the sandblasting device.
[0044] The third scraper 16 can work with the first scraper 14 and the second scraper 15 to scrape the sand material recovered into the discharge trough 21, reduce the resistance generated by the sand material accumulating at the opening of the discharge trough 21 and rotating to the bottom of the discharge hopper 5, improve the sand material recovery rate on the turntable 2, and ensure the safety and stability of the sandblasting device.
[0045] The second motor 61 on the mounting frame 6 drives the mixing frame 62 to rotate, which agitates the sand in the hopper 5, reducing the risk of damp sand in the hopper 5 causing clumping and hindering smooth discharge. This ensures that the sand in the hopper 5 falls evenly into the discharge trough 21 of the turntable 2, guaranteeing the safety and stability of the sandblasting device. The mixing plate 63 rotates with the mixing frame 62, conforming to the inner wall of the hopper 5, reducing the risk of damp sand in the hopper 5 sticking to the inner wall, and ensuring that the sand in the hopper 5 falls evenly into the discharge trough 21 of the turntable 2.
[0046] The sieve holes 71 on the filter cover 7 can prevent larger particles in the sand from falling into the hopper 5, reducing the operational disruptions and damage caused by larger diameter sand entering the sandblasting device, and ensuring the safety and stability of the sandblasting device. The larger diameter sand screened out by the filter cover 7 rolls to the connection between the filter cover 7 and the hopper 5. The second motor 61 drives the stirring rod 72 to rotate, which can push the larger sand to the collection port 81 and fall into the collection box 8, reducing the accumulation of sand on the filter cover 7 and making it easier for the staff to clean the sandblasting device.
[0047] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.
Claims
1. A sandblasting device for vortex tube experiments, characterized in that: The sandblasting device includes a base (1), a first motor (12) is installed in the base (1), a turntable (2) is rotatably mounted on the base (1), the output shaft of the first motor (12) is connected to the turntable (2), a material drop trough (21) is opened on the turntable (2), at least two material drop troughs (21) are arranged at intervals, a discharge pipe (3) is fixedly connected to the base (1), an air inlet pipe (31) is connected to the peripheral wall of the discharge pipe (3), a suction pipe (4) is connected to one end of the discharge pipe (3), one end of the suction pipe (4) is located above the turntable (2), a pressure plate (41) is fixedly connected to one end of the suction pipe (4), one side of the pressure plate (41) is attached to the turntable (2), a material drop hopper (5) is fixedly connected to the base (1), the bottom of the material drop hopper (5) is attached to the turntable (2), and a material drop port (51) is opened at the bottom of the material drop hopper (5).
2. The sandblasting device for vortex tube experiments according to claim 1, characterized in that: The surface of the pressure plate (41) is trapezoidal.
3. The sandblasting device for vortex tube experiments according to claim 2, characterized in that: The edge of the pressure plate (41) is bent away from the base (1).
4. The sandblasting device for vortex tube experiments according to claim 1, characterized in that: A mounting frame (6) is fixedly connected to the hopper (5), and a second motor (61) is mounted on the mounting frame (6). The output shaft of the second motor (61) is connected to a stirring frame (62), which is rotatably mounted inside the hopper (5).
5. The sandblasting device for vortex tube experiments according to claim 4, characterized in that: A stirring plate (63) is fixedly connected to the stirring frame (62), and the stirring plate (63) is slidably connected to the inner wall of the hopper (5).
6. The sandblasting device for vortex tube experiments according to claim 5, characterized in that: A filter cover (7) is fixedly connected to the hopper (5), and the filter cover (7) has a sieve hole (71).
7. The sandblasting device for vortex tube experiments according to claim 6, characterized in that: The output shaft of the second motor (61) is connected to a stirring rod (72), and a collection box (8) is fixedly connected to the hopper (5). A collection port (81) is opened on the peripheral wall of the hopper (5).
8. A sandblasting device for vortex tube experiments according to claim 3, characterized in that: A support plate (13) is fixedly connected to the base (1), a first scraper (14) is fixedly connected to the support plate (13), a second scraper (15) is fixedly connected to the first scraper (14), and a third scraper (16) is fixedly connected to the second scraper (15).