Anti-blocking and noise reduction device and sand blasting equipment comprising same

Abstract

The utility model provides a kind of anti-blocking noise reduction device and including its sand blasting equipment.The anti-blocking noise reduction device includes hopper, microporous aeration assembly, microporous aeration assembly includes: air inlet pipe, air inlet end is used to communicate external gas source;And microporous air outlet pipe, with the air outlet end connection of air inlet pipe and intercommunication, multiple micropores are distributed on microporous air outlet pipe, microporous air outlet pipe is used to provide airflow to the inside of hopper by multiple micropores, airflow is configured to pass through sand layer formed by sand material in hopper, and is used to make sand material be in flowing state.Microporous aeration assembly can provide airflow to the inside of hopper by multiple micropores, the airflow can pass through sand material and be in flowing state, in turn have the following effects: it can reduce the friction between sand material and between sand material and the inner wall of hopper;Sand material can be unobstructed, smoothly flow to lower discharge port under the action of gravity;It is beneficial to realize full area, continuous anti-blocking effect;Better noise reduction effect.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor silicon wafer surface etching technology, and in particular to an anti-clogging and noise reduction device and a sandblasting equipment including the same. Background Technology

[0002] Sandblasting equipment uses a high-speed stream of abrasive to impact the surface of a workpiece for cleaning, strengthening, or finishing. During operation, the abrasive is fed through a vibrator (or arch-breaking device) at the bottom of the hopper. Currently, mainstream technologies suffer from the following significant drawbacks:

[0003] 1. Severe noise pollution: Mechanical vibrators (such as pneumatic piston type and electric type) generate huge impact sounds and mechanical noise when working, which can easily damage the hearing of operators and cause serious industrial noise pollution.

[0004] 2. Unstable feeding efficiency: For wet, fine or easily clumped sand, the vibrator can only act on a local area, and the effect of breaking the arch is limited. It is easy to form "bridging" or voids at the bottom of the hopper, especially near the feeding port, which leads to feeding interruption and requires manual intervention, reducing the efficiency and automation of continuous operation of the equipment.

[0005] 3. High energy consumption and maintenance costs: The vibrator itself is a mechanical moving part, which is subject to wear and tear, and requires regular maintenance and replacement, which increases operating costs.

[0006] Therefore, there is an urgent need for a device that can effectively solve the problem of sand flowability while fundamentally reducing noise. Utility Model Content

[0007] The technical problem to be solved by this utility model is to overcome the defects of existing sandblasting equipment, such as unstable material feeding efficiency and serious noise pollution, and to provide an anti-clogging and noise reduction device and a sandblasting equipment including the same.

[0008] The present invention solves the above-mentioned technical problems through the following technical solution:

[0009] A clogging prevention and noise reduction device for sandblasting equipment includes a hopper and a microporous aeration component. The microporous aeration component includes:

[0010] The intake pipe, with its intake end used to connect to an external air source;

[0011] The microporous air outlet pipe is connected to and communicates with the air outlet end of the air inlet pipe. Multiple micropores are distributed on the microporous air outlet pipe. The microporous air outlet pipe is used to provide airflow to the interior of the hopper through the multiple micropores. The airflow is configured to pass through the sand layer formed by the sand in the hopper and to keep the sand in a flowing state.

[0012] In this solution, using the aforementioned structural configuration, the microporous aeration component can provide airflow into the hopper through multiple micropores. This airflow can pass through the sand layer inside the hopper, keeping the sand in a fluid state. This anti-clogging and noise reduction device is equivalent to transforming a static sand bed into a flowing, fluid-like fluidized bed based on the fluidized bed principle.

[0013] In practical use, when the sand in the hopper needs to maintain fluidity, the external air source is turned on, and the airflow (such as compressed gas) is transported to the microporous air outlet pipe through the air inlet pipe and released into the surrounding sand through multiple micropores on its surface. The tiny bubbles that emerge from the multiple micropores travel between the sand, thereby producing the following effects: (1) It can reduce friction: the airflow can form a layer of air film between the sand, which greatly reduces the static friction and internal friction between the sand and between the sand and the inner wall of the hopper; (2) It gives the sand fluidity: the sand is "suspended" under the action of the airflow, and the overall volume expands, exhibiting properties similar to fluid (i.e., fluidization). At this time, the sand can flow smoothly and unimpeded to the lower discharge port under its own gravity, just like a liquid; (3) It can continuously prevent arching: the airflow continuously acts on the sand layer at the bottom of the entire hopper, which fundamentally destroys the conditions for "bridging" and clumping, which is conducive to achieving a continuous anti-blocking effect in the whole area; (4) Better noise reduction effect: it can abandon the high-noise mechanical impact vibrator and replace it with a near-silent gas fluidization method. The noise of the anti-blocking noise reduction device and the corresponding sandblasting equipment mainly comes from the external air source, which is usually located outside the equipment or in an isolated place. The working noise of the hopper is extremely low, which is conducive to fundamentally solving the noise pollution problem.

[0014] Preferably, the microporous air outlet pipe is installed on the inner wall of the hopper, the air inlet end of the air inlet pipe is located outside the hopper, and the air outlet end of the air inlet pipe extends into the interior of the hopper.

[0015] In this scheme, the above-mentioned structure is adopted. The air inlet end of the air inlet pipe is located outside the material head, which facilitates the connection with the external air source. The micro-pore air outlet pipe is installed on the inner wall of the hopper, and multiple micropores are located inside the hopper as a whole, which facilitates the airflow to reliably act on the sand. In addition, since the micro-pore air outlet pipe is installed on the inner wall of the hopper, setting the air outlet end of the air inlet pipe to extend into the inside of the hopper also facilitates the connection between the air inlet pipe and the micro-pore air outlet pipe.

[0016] Preferably, the hopper has a feed inlet and a discharge outlet, with the feed inlet located at the top of the hopper along its height direction and the discharge outlet located at the bottom of the hopper along its height direction, wherein the microporous air outlet is located between the feed inlet and the discharge outlet.

[0017] And / or, the microporous aeration assembly also includes a heater disposed on the air inlet pipe for heating the airflow.

[0018] In this design, the aforementioned structure is used, with the microporous air outlet pipe located between the inlet and outlet. The micropores are positioned along the sand's flow path, facilitating the action of the airflow from the micropores on the sand. Furthermore, the heater heats the airflow, helping to keep it dry and ensuring that the airflow acts on the sand without affecting its properties.

[0019] Preferably, the microporous vent pipe is installed in the middle of the hopper along its height.

[0020] In this scheme, the above-mentioned structure is adopted, and the microporous air outlet pipe is installed in the middle of the hopper along the height direction, so that the airflow flowing out of the micropores can act on the sand in a larger area, which is more conducive to the reliable function of the airflow.

[0021] Preferably, the hopper includes a base and a hopper body, the interior of the base and the interior of the hopper body are connected, the inlet is located at the top of the hopper body, and the outlet is located on the base;

[0022] The microporous air outlet pipe is installed on the hopper body.

[0023] In this scheme, the above-mentioned structural setting is adopted, and the microporous air outlet is far away from the material outlet, which helps to prevent the airflow from affecting the airflow and thus hindering the normal discharge of sand.

[0024] Preferably, the microporous aeration assembly further includes a mounting frame, the microporous air outlet pipe has a plurality of protrusions spaced apart along the extending direction, and the mounting frame is a skeleton structure with a plurality of skeleton units spaced apart.

[0025] Among them, the microporous vent pipe is installed on the mounting frame, and an open structure is formed between two adjacent skeleton units;

[0026] The protrusion has multiple micropores evenly distributed on it, and the protrusion is located inside the open structure.

[0027] In this design, the mounting frame facilitates the installation of the microporous air outlet pipe. The multiple protrusions result in a large number of evenly distributed micropores on the air outlet pipe, which further enhances its effect on the sand. Furthermore, the multiple frame units significantly reduce the number of mounting frames required, thus lowering the overall weight of the anti-clogging and noise reduction device and facilitating the connection or installation of the mounting frame to the hopper. Additionally, the open structure formed by the frame units does not obstruct the normal airflow, ensuring reliable airflow action on the sand.

[0028] Preferably, the microporous aeration assembly further includes a filter screen, which covers the exterior of the side of the mounting frame where the skeleton unit is located.

[0029] In this solution, the above-mentioned structure is adopted. The filter screen covers the outside of the side of the mounting frame with the skeleton unit. The filter screen can protect the micropores on the microporous air outlet pipe, prevent sand from clogging the micropores, and thus not affect the normal flow of air. This helps to ensure that the airflow reliably acts on the sand.

[0030] Preferably, there are multiple microporous aeration components, which are arranged at intervals along the circumference of the hopper.

[0031] Alternatively, there may be multiple microporous aeration components, which are spaced apart along the circumference of the hopper and share the same air source.

[0032] In this design, the aforementioned structure features multiple microporous aeration components spaced circumferentially around the hopper. This allows for airflow output from multiple directions, enhancing the effect on the sand and ensuring its reliable flow. Furthermore, the shared air source among these microporous aeration components reduces the overall space required for the anti-clogging and noise reduction device. The shared air source also facilitates flow rate control, making operation convenient and providing a more uniform circumferential flow velocity for the sand.

[0033] Preferably, the number of microporous aeration components is four;

[0034] The anti-clogging and noise reduction device also includes a main connecting pipe, two first branch connecting pipes, and two second branch connecting pipes. The first end of the main connecting pipe is used to connect to an external air source. The second end of the main connecting pipe is connected to the first ends of the two first branch connecting pipes through a first three-way valve. The second ends of the two first branch connecting pipes are connected to the first ends of the two second branch connecting pipes and the air inlet pipes of two microporous aeration components through two second three-way valves. The second ends of the two second branch connecting pipes are connected to the air inlet pipes of the other two microporous aeration components.

[0035] The second branch connecting pipe is equipped with a two-way valve, and the main connecting pipe is equipped with a filter, a switching valve and a pressure regulating valve. Along the airflow direction, the filter, switching valve and pressure regulating valve are arranged in sequence on the main connecting pipe.

[0036] In this design, the aforementioned structural configuration, with the inclusion of three-way and two-way valves, facilitates connections between microporous aeration components and between these components and external air sources. Furthermore, by operating the three-way and two-way valves, all microporous aeration components can be closed or partially opened as needed, allowing for adjustments to the airflow. Additionally, the on / off valve and pressure regulating valve on the main connecting pipe facilitate the opening and closing of the airflow and the adjustment of air pressure. Simultaneously, the inclusion of a filter effectively removes minute dust particles and other impurities from the airflow.

[0037] This utility model also provides a sandblasting device, including a support frame. The sandblasting device also includes the aforementioned anti-clogging and noise reduction device, which is installed on the support frame.

[0038] The positive and progressive effects of this utility model are as follows:

[0039] In this scheme, the above-mentioned structure is adopted, and the microporous aeration component can provide airflow to the inside of the hopper through multiple micropores. The airflow can pass through the sand layer in the hopper and make the sand flow. The anti-clogging and noise reduction device is equivalent to transforming the static sand bed into a fluidized bed with fluid properties based on the fluidized bed principle. In specific use, when the sand in the hopper needs to maintain fluidity, the external air source is turned on, and the airflow (such as compressed gas) is transported to the microporous outlet pipe through the air inlet pipe and released into the surrounding sand through multiple micropores on its surface. The fine bubbles that emerge from the multiple micropores travel between the sand, thereby producing the following effects: (1) It can reduce friction: the airflow can form a layer of air film between the sand, which greatly reduces the static friction and internal friction between the sand and between the sand and the inner wall of the hopper; (2) It gives the sand fluidity: the sand is "suspended" under the action of the airflow, and the overall volume expands, exhibiting fluid-like properties (i.e., fluidization). At this time, the sand can flow smoothly and unimpeded to the lower discharge port under its own gravity, just like a liquid; (3) It can continuously prevent arching: the airflow continuously acts on the sand layer at the bottom of the entire hopper, which fundamentally destroys the conditions for "bridging" and clumping, which is conducive to achieving a continuous anti-blocking effect in the whole area; (4) Better noise reduction effect: it can abandon the high-noise mechanical impact vibrator and replace it with a near-silent gas fluidization method. The noise of the anti-blocking noise reduction device and the corresponding sandblasting equipment mainly comes from the external air source, which is usually located outside the equipment or in an isolated place. The working noise of the hopper is extremely low, which is conducive to fundamentally solving the noise pollution problem. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of a sandblasting device according to a preferred embodiment of the present invention.

[0041] Figure 2 This is a partial structural schematic diagram (I) of a preferred embodiment of the anti-blocking noise reduction device of the present invention.

[0042] Figure 3 for Figure 2 A magnified structural diagram of part A in the middle.

[0043] Figure 4 This is a partial structural schematic diagram (II) of the anti-blocking noise reduction device according to a preferred embodiment of the present invention.

[0044] Figure 5 This is a schematic diagram of the anti-blocking and noise reduction device of a preferred embodiment of the present invention when it is in a non-ventilated state.

[0045] Figure 6 This is a schematic diagram of the anti-blocking and noise reduction device in the ventilation state according to a preferred embodiment of the present invention.

[0046] Figure 7 This is a schematic diagram of the microporous aeration component in a preferred embodiment of the anti-clogging and noise reduction device of this utility model.

[0047] Figure 8 An exploded view of the microporous aeration component in a preferred embodiment of the anti-clogging and noise reduction device of this utility model.

[0048] Explanation of reference numerals in the attached figures

[0049] 1 Supporting Framework

[0050] 2. Anti-blocking and noise reduction device

[0051] 10 hoppers

[0052] 101 feed inlet

[0053] 102 discharge port

[0054] 103 Hopper Body

[0055] 104 base

[0056] 20 microporous aeration components

[0057] 201 intake pipe

[0058] 202 microporous air outlet tube

[0059] 2021 protrusion

[0060] 203 micropores

[0061] 204 heater

[0062] 205 mounting bracket

[0063] 2051 skeleton unit

[0064] 206 filter

[0065] 30 main connecting pipe

[0066] 40 First branch connecting pipe

[0067] 50 Second Branch Connecting Pipe

[0068] 60 First Three-Way Valve

[0069] 70 Second Three-Way Valve

[0070] 80 two-way valve

[0071] 90 filter

[0072] 100 switch valve

[0073] 110 air pressure regulating valve

[0074] 3 External air source Detailed Implementation

[0075] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0076] like Figures 1 to 8 As shown, this embodiment provides an anti-clogging and noise reduction device 2 and a sandblasting device including the same. The anti-clogging and noise reduction device 2 includes a hopper 10 and a microporous aeration assembly 20. The microporous aeration assembly 20 includes an air inlet pipe 201 and a microporous air outlet pipe 202. The air inlet end of the air inlet pipe 201 is used to connect to an external air source 3. The microporous air outlet pipe 202 is connected to and communicates with the air outlet end of the air inlet pipe 201. A plurality of micropores 203 are distributed on the microporous air outlet pipe 202. The microporous air outlet pipe 202 is used to provide airflow to the interior of the hopper 10 through the plurality of micropores 203. The airflow is configured to pass through the sand layer formed by sand in the hopper 10 and to keep the sand in a flowing state.

[0077] In this embodiment, the microporous aeration component 20 can provide airflow to the interior of the hopper 10 through multiple micropores 203. This airflow can pass through the sand layer inside the hopper 10 and keep the sand in a flowing state. The anti-clogging and noise reduction device 2 is equivalent to transforming the static sand bed into a flowing, fluidized bed based on the fluidized bed principle.

[0078] In practical use, when the sand in the hopper 10 needs to maintain fluidity, the external air source 3 is turned on, and the airflow (such as compressed gas) is transported to the microporous air outlet pipe 202 through the air inlet pipe 201 and released into the surrounding sand through multiple micropores 203 on its surface. The tiny bubbles that emerge from the multiple micropores 203 travel between the sand, thereby producing the following effects: (1) It can reduce friction: the airflow can form a layer of air film between the sand, which greatly reduces the static friction and internal friction between the sand and between the sand and the inner wall of the hopper 10; (2) It gives the sand fluidity: the sand is "suspended" under the action of the airflow, and the overall volume expands, exhibiting properties similar to fluid (i.e., fluidization). At this time, the sand can flow smoothly and unimpeded to the lower discharge port 102 under its own gravity, just like a liquid; (3) It can continuously prevent arching: the airflow continuously acts on the sand layer at the bottom of the entire hopper 10, which fundamentally destroys the conditions for "bridging" and clumping, which is conducive to achieving a continuous anti-blocking effect in the whole area; (4) Better noise reduction effect: it can abandon the high-noise mechanical impact vibrator and replace it with a near-silent gas fluidization method. The noise of the anti-blocking noise reduction device 2 and the corresponding sandblasting equipment mainly comes from the external air source 3, and the external air source 3 is usually located outside the equipment or in an isolated place. The working noise of the hopper 10 is extremely low, which is conducive to fundamentally solving the noise pollution problem.

[0079] in, Figure 1 The diagram schematically shows an external air source 3, which comes from an air compressor.

[0080] As a preferred configuration, the microporous air outlet pipe 202 is installed on the inner wall of the hopper 10, the air inlet end of the air inlet pipe 201 is located outside the hopper 10, and the air outlet end of the air inlet pipe 201 extends into the interior of the hopper 10.

[0081] With this configuration, the air inlet end of the air inlet pipe 201 is located outside the material head, facilitating connection with the external air source 3; the microporous air outlet pipe 202 is installed on the inner wall of the hopper 10, and multiple micropores 203 are located inside the hopper 10, facilitating reliable airflow to act on the sand; in addition, since the microporous air outlet pipe 202 is installed on the inner wall of the hopper 10, setting the air outlet end of the air inlet pipe 201 to extend into the interior of the hopper 10 also facilitates connection between the air inlet pipe 201 and the microporous air outlet pipe 202.

[0082] It should be noted that the specific installation method of the microporous air outlet pipe 202 and the hopper 10 is not specifically limited here, as long as the corresponding connection can be achieved and the normal feeding and discharging of sand is not affected.

[0083] In addition, the specific number of micropores 203 on the microporous vent pipe 202 is not limited. As a preferred setting, a sufficient number of micropores 203 can be evenly arranged on the microporous vent pipe 202.

[0084] like Figure 1 , Figures 4 to 6 As shown, the hopper 10 has a feed inlet 101 and a discharge outlet 102. The feed inlet 101 is located at the top of the hopper 10 along its height direction, and the discharge outlet 102 is located at the bottom of the hopper 10 along its height direction. A microporous air outlet pipe 202 is located between the feed inlet 101 and the discharge outlet 102. With this arrangement, the microporous air outlet pipe 202 is positioned between the feed inlet 101 and the discharge outlet 102, and the micropores 203 are located in the flow path of the sand, which facilitates the effect of the airflow exiting the micropores 203 on the sand.

[0085] Furthermore, the microporous vent pipe 202 is installed in the middle of the hopper 10 along the height direction.

[0086] With this configuration, the microporous air outlet pipe 202 is installed in the middle of the hopper 10 along the height direction, so that the airflow flowing out from the micropores 203 can act on the sand in a larger area, which is more conducive to the reliable functioning of the airflow.

[0087] in, Figure 4 The arrow at the top of the middle section schematically indicates the direction of sand feeding, and the arrow at the bottom schematically indicates the direction of sand discharge. Figure 5 The diagram illustrates the internal structure of the hopper 10 when it is not ventilated. At this time, the sand naturally settles, making it difficult to supply sand, and the inner wall of the hopper 10 will also accumulate sand. Figure 6 The diagram illustrates the internal structure of the hopper 10 in the ventilated state. After ventilation, the sand is in a "boiling" state, which makes it easy to flow and facilitates sand supply, thus reducing the accumulation of sand on the inner wall of the hopper.

[0088] like Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, the microporous aeration assembly 20 also includes a heater 204, which is disposed on the air inlet pipe 201 for heating the airflow. The heater 204 heats the airflow, which helps to keep the airflow dry, thus allowing the airflow to act on the sand without affecting its properties.

[0089] like Figure 1As shown, the hopper 10 includes a base 104 and a hopper body 103. The interior of the base 104 and the interior of the hopper body 103 are connected. The feed inlet 101 is located at the top of the hopper body 103, and the discharge outlet 102 is located on the base 104. A microporous air outlet pipe 202 is installed on the hopper body 103. In this embodiment, this arrangement, with the microporous air outlet pipe 202 being far from the discharge outlet 102, helps prevent airflow from affecting airflow and thus hindering the normal discharge of sand.

[0090] like Figures 2 to 8 As shown, the microporous aeration assembly 20 also includes a mounting frame 205. The microporous air outlet pipe 202 has a plurality of protrusions 2021 spaced apart along its extension direction. The mounting frame 205 is a skeleton structure with a plurality of skeleton units 2051 spaced apart. The microporous air outlet pipe 202 is mounted on the mounting frame 205, and an open structure is formed between two adjacent skeleton units 2051. A plurality of micropores 203 are evenly distributed on the protrusions 2021, and the protrusions 2021 are located within the open structure.

[0091] In this embodiment, the mounting bracket 205 facilitates the installation of the microporous air outlet pipe 202. The multiple protrusions 2021 result in a large number of evenly distributed micropores 203 on the microporous air outlet pipe 202, which further enhances the effect on the sand. Furthermore, the multiple skeleton units 2051 significantly reduce the number of mounting brackets 205, thus reducing the overall weight of the anti-clogging and noise reduction device 2 and facilitating the connection or installation of the mounting brackets 205 with the hopper 10. On the other hand, the open structure formed by the skeleton units 2051 does not obstruct the normal flow of air, ensuring reliable airflow on the sand.

[0092] Furthermore, the microporous aeration assembly 20 also includes a filter screen 206, which covers the exterior of the side of the mounting frame 205 where the skeleton unit 2051 is located.

[0093] The filter screen 206 covers the outside of the side of the mounting frame 205 where the skeleton unit 2051 is located. The filter screen 206 can protect the micropores 203 on the micropore air outlet pipe 202, prevent sand from clogging the micropores 203, and thus not affect the normal flow of air, which helps to ensure that the airflow reliably acts on the sand.

[0094] It should be noted that the size of the filter holes in filter screen 206 is configured to prevent sand from entering the micropores 203 through the filter holes.

[0095] like Figures 1 to 6As shown, there are multiple microporous aeration components 20, which are arranged at intervals along the circumference of the hopper 10. The circumferential arrangement of multiple microporous aeration components 20 in the hopper 10 allows for airflow output from multiple directions, which is more beneficial for the sand and ensures the sand remains reliably in a flowing state.

[0096] As a preferred configuration, multiple microporous aeration components 20 share the same air source. This sharing of an air source has two advantages: firstly, it reduces the overall space occupied by the anti-clogging and noise reduction device 2; secondly, it facilitates control of flow rate and other parameters, making operation easier and providing a more uniform circumferential flow rate for the sand.

[0097] In other alternative embodiments, an air source may be set up separately for each of the multiple microporous aeration components 20, or some of the microporous aeration components 20 may be set up to share a single air source, depending on actual needs.

[0098] Specifically, in this embodiment, the number of microporous aeration components 20 is four. The anti-clogging and noise reduction device 2 also includes a main connecting pipe 30, two first branch connecting pipes 40, and two second branch connecting pipes 50. The first end of the main connecting pipe 30 is used to connect to an external air source 3. The second end of the main connecting pipe 30 is connected to the first ends of the two first branch connecting pipes 40 through a first three-way valve 60. The second ends of the two first branch connecting pipes 40 are connected to the first ends of the two second branch connecting pipes 50 and the air inlet pipes 201 of two of the microporous aeration components 20 through two second three-way valves 70. The second ends of the two second branch connecting pipes 50 are connected to the air inlet pipes 201 of the other two microporous aeration components 20. A two-way valve 80 is provided on the second branch connecting pipe 50, and a filter 90, a switching valve 100, and a pressure regulating valve 110 are provided on the main connecting pipe 30. The filter 90, the switching valve 100, and the pressure regulating valve 110 are arranged sequentially along the airflow direction on the main connecting pipe 30.

[0099] in, Figure 2 and Figure 3 The arrows in the diagram schematically indicate the direction of airflow.

[0100] In this embodiment, by setting up a three-way valve and a two-way valve, on the one hand, it facilitates the connection between the microporous aeration components 20 and between the microporous aeration components 20 and the external air source 3; on the other hand, by operating the three-way valve and the two-way valve, all microporous aeration components 20 can be closed or all or part of the microporous aeration components 20 can be opened as needed, which is beneficial for adjusting the airflow according to actual needs. In addition, the on / off valve 100 and the air pressure regulating valve 110 set on the main connecting pipe 30 facilitate the opening and closing of the airflow and also facilitate the adjustment of the airflow pressure. At the same time, the filter 90 can remove tiny dust and other impurities in the airflow.

[0101] It should be noted that, as an example, the first three-way valve 60 is a Y-type three-way valve, the second three-way valve 70 is a T-type three-way valve, and the two-way valve 80 is a right-angle two-way valve 80. Additionally, the switching valve 100 can be a manual / solenoid switching valve, and the pneumatic pressure regulating valve 110 is a precision pneumatic pressure regulating valve.

[0102] In addition, the specific connection method of the above four microporous aeration components 20 is only an example. In other alternative embodiments, it can also be adapted according to actual needs.

[0103] like Figure 1 As shown, in addition to the aforementioned anti-clogging and noise reduction device 2, the sandblasting equipment also includes a support frame 1, and the anti-clogging and noise reduction device 2 is installed on the support frame 1.

[0104] It should be noted that the specific structure of the support frame 1 is not specifically limited here and can be set according to actual needs. Correspondingly, the specific installation method of the anti-blocking and noise reduction device 2 and the support frame 1 is also not specifically limited and can be adapted to actual needs.

[0105] In summary, the anti-clogging and noise reduction device 2 in this application adopts an innovative design based on the fluidized bed principle. A fluidized bed is a reactor that utilizes gas or liquid passing through a layer of granular solids to suspend the solid particles, allowing for gas-solid or liquid-solid phase reaction processes. Its core idea is to transform a static sand bed into a dynamic fluidized bed with fluid properties.

[0106] The anti-clogging and noise reduction device 2 and the sandblasting equipment including it in this application have the following effects:

[0107] (1) It has a better noise reduction effect: It can achieve extreme noise reduction, completely abandoning the high-noise mechanical impact vibrator, and instead uses a near-silent gas fluidization method. The noise of the equipment during operation mainly comes from the air source (usually located outside the equipment or in an isolated place). The hopper body 103 has extremely low operating noise, which fundamentally solves the noise pollution problem;

[0108] (2) It can achieve efficient anti-blocking and material feeding: the fluidization effect makes the sand material flow to the best state, the material feeding is smooth and uniform, and the production interruption caused by "bridging" is completely avoided, which greatly improves the material replenishment efficiency and the operating efficiency and stability of the entire sandblasting system.

[0109] (3) High reliability and easy maintenance: This anti-blocking and noise reduction device 2 has no moving parts, no mechanical wear, long service life, and is almost maintenance-free. The core working components are easy to replace and the cost is low;

[0110] (4) Wide adaptability: It is especially suitable for sand materials that are prone to moisture and clumping, have small particles and poor flowability. It has strong universality and a wide range of applications.

[0111] (5) Energy saving and environmental protection: Compared with the continuous operation of mechanical vibrators, the air circuit system of the anti-blocking and noise reduction device 2 can work intermittently (for example, only when feeding is required), which consumes less energy and is more energy-saving and environmentally friendly.

[0112] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0113] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A clogging prevention and noise reduction device for sandblasting equipment, the clogging prevention and noise reduction device comprising a hopper, characterized in that, The anti-clogging and noise reduction device further includes a microporous aeration component, which comprises: An air intake pipe, wherein the air intake end of the air intake pipe is used to connect to an external air source; A microporous air outlet pipe is connected and communicates with the air outlet end of the air inlet pipe. The microporous air outlet pipe has multiple micropores distributed on it. The microporous air outlet pipe is used to provide airflow to the interior of the hopper through the multiple micropores. The airflow is configured to pass through the sand layer formed by the sand in the hopper and to keep the sand in a flowing state.

2. The anti-blocking noise reduction device as described in claim 1, characterized in that, The microporous air outlet pipe is installed on the inner wall of the hopper, the air inlet end of the air inlet pipe is located outside the hopper, and the air outlet end of the air inlet pipe extends into the interior of the hopper.

3. The anti-blocking noise reduction device as described in claim 1, characterized in that, The hopper has a feed inlet and a discharge outlet. The feed inlet is located at the top of the hopper along the height direction, and the discharge outlet is located at the bottom of the hopper along the height direction. The microporous air outlet is located between the feed inlet and the discharge outlet. And / or, the microporous aeration assembly further includes a heater disposed on the air inlet pipe for heating the airflow.

4. The anti-blocking noise reduction device as described in claim 3, characterized in that, The microporous air outlet pipe is installed in the middle of the hopper along its height direction.

5. The anti-blocking noise reduction device as described in claim 4, characterized in that, The hopper includes a base and a hopper body, the interior of the base and the interior of the hopper body are connected, the inlet is located at the top of the hopper body, and the outlet is located on the base; The microporous air outlet pipe is installed on the hopper body.

6. The anti-blocking noise reduction device as described in claim 2, characterized in that, The microporous aeration assembly also includes a mounting frame, and the microporous air outlet pipe has a plurality of protrusions spaced apart along the extending direction. The mounting frame is a skeleton structure and has a plurality of skeleton units spaced apart. The microporous vent pipe is mounted on the mounting frame, and an open structure is formed between two adjacent skeleton units; The protrusion has a plurality of micropores evenly distributed on it, and the protrusion is located within the open structure.

7. The anti-blocking noise reduction device as described in claim 6, characterized in that, The microporous aeration assembly also includes a filter screen, which covers the outside of the side of the mounting frame where the skeleton unit is located.

8. The anti-blocking noise reduction device according to any one of claims 1-7, characterized in that, The number of microporous aeration components is multiple, and the multiple microporous aeration components are arranged at intervals along the circumference of the hopper; Alternatively, there may be multiple microporous aeration components, which are spaced apart circumferentially along the hopper, and share the same air source.

9. The anti-blocking noise reduction device as described in claim 8, characterized in that, The number of microporous aeration components is four; The anti-clogging and noise reduction device further includes a main connecting pipe, two first branch connecting pipes, and two second branch connecting pipes. The first end of the main connecting pipe is used to connect to the external air source. The second end of the main connecting pipe is connected to the first ends of the two first branch connecting pipes through a first three-way valve. The second ends of the two first branch connecting pipes are connected to the first ends of the two second branch connecting pipes and the air inlet pipes of two of the microporous aeration components through two second three-way valves. The second ends of the two second branch connecting pipes are connected to the air inlet pipes of the other two microporous aeration components. The second branch connecting pipe is equipped with a two-way valve, and the main connecting pipe is equipped with a filter, a switching valve and a pressure regulating valve. The filter, the switching valve and the pressure regulating valve are arranged sequentially along the airflow direction on the main connecting pipe.

10. A sandblasting device, comprising a support frame, characterized in that, The sandblasting equipment further includes an anti-clogging and noise reduction device as described in any one of claims 1-9, wherein the anti-clogging and noise reduction device is installed on the support frame.

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