A jet sandblasting test platform

Abstract

The utility model relates to the technical field of erosion wear test discloses a jet flow type sand blasting test platform, including air compressor, fixed frame, support frame, sand bucket and sand blasting gun, the fixed frame inside is equipped with even sand -entraining airflow system, the air compressor and sand bucket are connected with the pipeline in even sand -entraining airflow system respectively and are provided, the fixed frame places in support frame top, the fixed frame one side fixedly penetrates and has output pipe, the output pipe is connected with the pipeline in even sand -entraining airflow system and is provided, the sand blasting gun is opened from left to right and is communicated and has the sand horn mouth of entering, acceleration channel and sand horn mouth, through the sand horn mouth of entering in this sand blasting gun, acceleration channel and sand horn mouth, can control airflow, reduce the attenuation of particle momentum, and stabilize the movement track of particle, to improve the accuracy and consistency of erosion wear test.

Description

Technical Field

[0001] This utility model belongs to the field of erosion and wear testing technology, specifically, it relates to a jet-type sandblasting test platform. Background Technology

[0002] In fields such as materials science, mechanical engineering, aerospace, and new energy, research on the erosion and wear properties of materials under complex environments is crucial. Taking the wind power industry as an example, wind turbine blades are exposed to sandstorms for extended periods. Sand particles, carried by high-speed airflow, continuously impact the blade surface, causing erosion and wear, severely affecting their aerodynamic performance and service life, and consequently reducing wind power generation efficiency and equipment reliability. Therefore, accurate research on the erosion and wear properties of wind turbine blades in sandstorm environments is of key significance for optimizing blade material and structural design and improving the durability of wind power equipment. Jet-type testing platforms are important tools for conducting such research.

[0003] Jet-type testing platforms accelerate particles with high-pressure airflow and propel them at high speed onto the sample surface through nozzles, simulating erosion wear processes in real-world environments. During this process, the high-speed particles collide violently with the material surface, causing surface deformation, crack propagation, and spalling. Their kinetic energy induces plastic deformation or brittle fracture, leading to erosion wear. However, traditional jet-type testing platforms have significant drawbacks: the jet nozzles are difficult to control effectively at the exit point, causing particles to concentrate in the central region of the jet. This is mainly attributed to uneven nozzle design and airflow distribution—high airflow velocity in the central region and low velocity in the peripheral region cause particles to converge towards the center under the influence of the airflow. Simultaneously, an unreasonable nozzle shape and size design exacerbates the central concentration effect, and the particle's own inertia further strengthens its tendency to move along the central axis of the jet. These factors combined result in particles not being evenly distributed on the sample surface, leading to significant differences between the simulated erosion wear conditions and actual wind and sand environments. This severely affects the accuracy and reliability of wear test results for materials such as wind turbine blades, making it difficult to effectively guide the research and development and performance optimization of blade materials. Therefore, there is an urgent need to develop a jet-type sandblasting test platform that can achieve uniform particle spraying and improve test accuracy. Utility Model Content

[0004] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows: A jet-type sandblasting test platform includes an air compressor, a fixed frame, a support frame, a sand bucket, and a sandblasting gun. A uniform sand-carrying airflow system is installed inside the fixed frame. The air compressor and the sand bucket are respectively connected to the pipelines in the uniform sand-carrying airflow system. The fixed frame is placed on the top of the support frame. An output pipe is fixedly inserted through one side of the fixed frame. The output pipe is connected to the pipelines in the uniform sand-carrying airflow system. The sandblasting gun has a sand inlet, an acceleration channel, and a sandblasting nozzle connected from left to right. The sandblasting gun is inserted into the output pipe and connected to the output end. A fixing component for mounting the sandblasting gun is provided on one side of the fixed frame.

[0005] In a preferred embodiment of this utility model, the fixing component includes a fixing plate and a retaining frame. The fixing plate is installed on one side of the fixing frame, and the retaining frame movably passes through the fixing plate. A retaining groove is provided on the outer wall of the sandblasting gun near the sand inlet. The retaining frame is engaged in the retaining groove. An L-shaped limiting plate is slidably connected to the fixing plate. A limiting opening is provided on the retaining frame, and the L-shaped limiting plate is inserted into the limiting opening. A stop block is installed on the inner wall of the retaining groove, and the stop block is slidably connected to the retaining frame. A lever plate is installed on the outer wall of the L-shaped limiting plate. By setting the retaining frame, the retaining frame can be engaged in the retaining groove and squeezed against the stop block, thereby limiting and fixing the sandblasting gun.

[0006] In a preferred embodiment of this utility model, the abutment block and the card frame are provided with a forward-inclined inclined surface one, and the card frame and the abutment block are provided with a backward-inclined inclined surface two, and the inclined surface one and the inclined surface two are in contact with each other.

[0007] In a preferred embodiment of this utility model, a pad is installed at one end of the output end. The pad is made of wear-resistant rubber. By setting the pad, the sealing between the output pipe and the sandblasting gun can be increased.

[0008] In a preferred embodiment of this utility model, a groove is provided on the front of the fixing plate, the L-shaped limiting plate is slidably connected to the groove, a limiting rod is installed on the inner wall of the groove, the limiting rod movably passes through the L-shaped limiting plate, and a spring is surrounded on the outer wall of the limiting rod. The spring is installed between one side of the L-shaped limiting plate and the inner wall of the groove. By setting the limiting rod, the L-shaped limiting plate and the spring can be limited, ensuring the stability of the L-shaped limiting plate when moving and the spring when compressed.

[0009] In a preferred embodiment of this utility model, the L-shaped limiting plate is adapted to the limiting port and the sliding groove. By setting the L-shaped limiting plate, the L-shaped limiting plate can be inserted into the limiting port, thereby fixing the card frame.

[0010] Compared with the prior art, the present invention has the following advantages: This invention, through the sand inlet, acceleration channel, and spray nozzle of the sandblasting gun, can control the airflow, reduce the attenuation of particle momentum, and stabilize the particle trajectory, thereby improving the accuracy and consistency of erosion wear tests. The specific embodiments of this invention will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0011] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the top cross-sectional structure of the sandblasting gun of this utility model; Figure 3 This utility model Figure 2 Enlarged structural diagram of section A in the middle; Figure 4 This is a schematic diagram of the connection structure between the card frame and the sandblasting gun of this utility model; Figure 5 This utility model Figure 4 Enlarged structural diagram of section B in the middle; Figure 6 This is a comparison chart of wind speeds at different distances from the nozzle of the sandblasting gun.

[0012] In the diagram: 1. Air compressor; 2. Fixed frame; 3. Sandblasting gun; 4. Support frame; 5. Sand bucket; 6. Output pipe; 7. Baffle plate; 8. Pad; 9. Fixed plate; 10. Clip frame; 11. Clip groove; 12. Pad block; 13. Limit port; 14. L-shaped limit plate; 15. Limit rod; 16. Spring; 17. Slide groove; 301. Sand inlet flare; 302. Acceleration channel; 303. Sandblasting flare. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0014] like Figures 1 to 6As shown, a jet-type sandblasting test platform includes an air compressor 1, a fixed frame 2, a support frame 4, a sand bucket 5, and a sandblasting gun 3. A uniform sand-carrying airflow system is installed inside the fixed frame 2. The air compressor 1 and the sand bucket 5 are respectively connected to the pipeline in the uniform sand-carrying airflow system. The fixed frame 2 is placed on the top of the support frame 4. An output pipe 6 is fixedly inserted through one side of the fixed frame 2. The output pipe 6 is connected to the pipeline in the uniform sand-carrying airflow system. The sandblasting gun 3 has a sand inlet horn 301, an acceleration channel 302, and a sandblasting horn 303 connected from left to right. The sandblasting gun 3 is inserted into the output pipe 6 and connected to the output end. A fixing component for installing the sandblasting gun 3 is provided on one side of the fixed frame 2.

[0015] Furthermore, the fixing components include a fixing plate 9 and a frame 10. The fixing plate 9 is installed on one side of the fixing frame 2, and the frame 10 moves through the fixing plate 9. The outer wall of the sandblasting gun 3 has a slot 11 near the sand inlet, and the frame 10 is engaged in the slot 11. The fixing plate 9 is slidably connected to an L-shaped limiting plate 14. The frame 10 has a limiting opening 13, and the L-shaped limiting plate 14 is inserted into the limiting opening 13. A stop block 12 is installed on the inner wall of the slot 11, and the stop block 12 is slidably connected to the frame 10. A lever 7 is installed on the outer wall of the L-shaped limiting plate 14.

[0016] The design incorporates a locking frame 10 that can be inserted into a slot 11 and press against a stop block 12, thereby limiting and fixing the sandblasting gun 3.

[0017] Furthermore, the abutment block 12 and the card frame 10 have a forward-sloping first surface on the opposite side, and the card frame 10 and the abutment block 12 have a backward-sloping second surface on the opposite side, with the first surface and the second surface fitting together.

[0018] Furthermore, a pad 8 is installed at one end of the output end, and the pad 8 is made of wear-resistant rubber.

[0019] By setting the pad 8, the sealing between the output pipe 6 and the sandblasting gun 3 can be increased.

[0020] Furthermore, a groove 17 is provided on the front of the fixing plate 9, and the L-shaped limiting plate 14 is slidably connected to the groove 17. A limiting rod 15 is installed on the inner wall of the groove 17. The limiting rod 15 moves through the L-shaped limiting plate 14, and a spring 16 surrounds the outer wall of the limiting rod 15. The spring 16 is installed between one side of the L-shaped limiting plate 14 and the inner wall of the groove 17.

[0021] The limiting rod 15 can limit the L-shaped limiting plate 14 and the spring 16, ensuring the stability of the L-shaped limiting plate 14 when moving and the spring 16 when compressed.

[0022] Furthermore, the L-shaped limiting plate 14 is adapted to the limiting port 13 and the sliding groove 17.

[0023] The L-shaped limiting plate 14 is installed so that it can be inserted into the limiting port 13, thereby fixing the card frame 10.

[0024] The implementation principle of a jet-type sand-spraying test platform is as follows: The uniform sand-carrying airflow system, from left to right, consists of a diffuser, a gas-sand mixing converging pipe, a gas converging pipe, and a vertically rising sand-upper pipe. The diffuser has a circular outlet with a radius of 3cm at its front end and a length of 15cm, with a 1cm×1cm circular transition section in the middle. The gas-sand mixing converging pipe is 5cm long and has a maximum cross-sectional area of ​​2.5cm×2.5cm. Inside the gas-sand mixing converging pipe are gas converging pipes decreasing in diameter from 6mm to 3.5mm and a vertically rising sand-upper pipe with a diameter of 6mm. During use, the air compressor 1 is started, generating airflow in the uniform sand-carrying airflow system. This causes the sand in the sand bucket 5 to be drawn in and mixed with the airflow due to the pressure difference, and then transported... The sand enters the sandblasting gun 3 and is finally ejected through the sand inlet 301, acceleration channel 302, and sand blasting nozzle 303. After leaving the sandblasting gun 3, the airflow undergoes several development stages. In the initial stage, the airflow and sand particles are ejected at a relatively high speed and in a relatively concentrated state, resulting in greater kinetic energy. As the airflow expands forward, the airflow speed gradually decreases, and the kinetic energy of the sand particles is converted into other forms of energy, leading to a weakening of the impact force. In the stable expansion zone, the airflow speed further decreases, and the distribution of sand particles gradually becomes more uniform. However, due to the instability of the flow, the trajectory of the sand particles may deviate. After entering the wake zone, the airflow speed and the kinetic energy of the sand particles decrease significantly, the impact force is further weakened, and the wear effect gradually decreases. To obtain a suitable test result of 16... The wind speed (m / s) was measured using a cup anemometer at distances of 5cm, 10cm, 15cm, 20cm, 25cm, 30cm, 35cm, and 40cm from the nozzle. The results showed that within 15cm of the nozzle, the wind speed was stable with minimal kinetic energy loss. The sand inlet 301, acceleration channel 302, and sand blasting nozzle 303 in the sandblasting gun 3 allow for airflow control, reducing particle momentum attenuation and stabilizing particle trajectory, thereby improving the accuracy and consistency of the erosion and wear test. When disassembly and maintenance of the gun nozzle are required, the L-shaped limiting plate 14 can be pulled inwards using the lever 7, compressing the spring 16 and disengaging the L-shaped limiting plate 14. Pull the slot 13 outwards and then pull the retaining frame 10 outwards to disengage it from the slot 11. Then, pull the sandblasting gun 3 outwards to disengage it from the output pipe 6, thus completing the disassembly of the sandblasting gun 3. After maintenance, the sandblasting gun 3 can be directly inserted back into the output pipe 6, and then the retaining frame 10 can be inserted into the slot 11 and pressed against the abutment block 12. Then, release the lever plate 7. At this time, the L-shaped limiting plate 14 will be inserted into the limiting slot 13 under the reset force of the spring 16, and the retaining frame 10 will be limited and fixed again, thus completing the installation of the sandblasting gun 3. Through the above structure, it is convenient for personnel to disassemble and maintain the sandblasting gun 3, greatly reducing the difficulty of disassembling and assembling the sandblasting gun 3 and improving the work efficiency of personnel.

Claims

1. A jet-type sandblasting test platform, comprising an air compressor (1), a fixed frame (2), a support frame (4), a sand bucket (5), and a sandblasting gun (3), wherein a uniform sand-carrying airflow system is installed inside the fixed frame (2), and the air compressor (1) and the sand bucket (5) are respectively connected to pipelines in the uniform sand-carrying airflow system, and the fixed frame (2) is placed on top of the support frame (4), characterized in that, The fixed frame (2) has an output pipe (6) fixedly passing through one side. The output pipe (6) is connected to the pipeline in the uniform sand-carrying airflow system. The sandblasting gun (3) is connected from left to right with a sand inlet (301), an acceleration channel (302) and a sand blasting nozzle (303). The sandblasting gun (3) is inserted into the output pipe (6) and connected to the output end. The fixed frame (2) has a fixing component for installing the sandblasting gun (3) on one side.

2. The jet-type sandblasting test platform according to claim 1, characterized in that, The fixing assembly includes a fixing plate (9) and a frame (10). The fixing plate (9) is installed on one side of the fixing frame (2). The frame (10) is movably inserted through the fixing plate (9). The outer wall of the sandblasting gun (3) is provided with a slot (11) near the sand inlet. The frame (10) is engaged in the slot (11). The fixing plate (9) is slidably connected with an L-shaped limiting plate (14). The frame (10) is provided with a limiting port (13). The L-shaped limiting plate (14) is inserted into the limiting port (13). The inner wall of the slot (11) is provided with a stop block (12). The stop block (12) is slidably connected to the frame (10). The outer wall of the L-shaped limiting plate (14) is provided with a lever plate (7).

3. The jet-type sandblasting test platform according to claim 2, characterized in that, The abutment (12) and the card frame (10) have a forward-sloping first surface on the opposite side, and the card frame (10) and the abutment (12) have a backward-sloping second surface on the opposite side, and the first surface and the second surface are in contact with each other.

4. The jet-type sandblasting test platform according to claim 1, characterized in that, One end of the output terminal is equipped with a pad (8), and the pad (8) is made of wear-resistant rubber.

5. The jet-type sandblasting test platform according to claim 2, characterized in that, The fixed plate (9) has a sliding groove (17) on its front side. The L-shaped limiting plate (14) is slidably connected to the sliding groove (17). A limiting rod (15) is installed on the inner wall of the sliding groove (17). The limiting rod (15) moves through the L-shaped limiting plate (14). A spring (16) surrounds the outer wall of the limiting rod (15). The spring (16) is installed between one side of the L-shaped limiting plate (14) and the inner wall of the sliding groove (17).

6. The jet-type sandblasting test platform according to claim 5, characterized in that, The L-shaped limiting plate (14) is adapted to the limiting port (13) and the sliding groove (17).

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