Uniform sand blasting equipment based on compressed air vibration
By introducing compressed air vibration devices in the sandblasting equipment, the problem of reduced sand accumulation and reduction of sandblasting is solved, the uniformity and consistency of the sandblast effect are achieved, and the work needs are adapted to the frequency of vibration and duration.
Patent Information
- Application Number
- CN202411799260.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-01-28
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
During the sandblasting process of existing sandblasting machines, sand cannot flow smoothly from the sandblasting table holes into the sand storage tank, resulting in a reduction in sand accumulation and sandblasting amount.
Design a uniform sandblasting device based on compressed air vibration. Through the pneumatic vibrator, the compressed air is used to drive the device to vibrate, so that the sand is smooth into the sand slot to ensure the uniformity of the sand output.
By compressed the air vibration device, the problem of sand accumulation is solved, the consistency of the sandblast effect is ensured, and the vibration frequency and duration of the vibration are controlled through relays to meet different work needs.
Smart Images
Figure CN119369306A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a uniform sandblasting device based on compressed air vibration. Background Art
[0002] The working principle of the sandblasting machine is to use compressed air as a power source to spray abrasive (metallic abrasive or non-metallic abrasive) at high speed through a nozzle onto the surface of the workpiece, thereby achieving the purpose of cleaning, removing rust or changing the surface quality of the workpiece. In the sandblasting machine, the abrasive is mixed with compressed air to form a high-speed jet beam, which is sprayed along the feed pipe and impacts the surface of the workpiece, causing the surface attachment to peel off or change the mechanical properties.
[0003] However, during the sandblasting process of the existing sandblasting machine, the sand cannot flow smoothly from the sandblasting table hole into the sand storage tank, which will cause accumulation on the table surface, resulting in a gradual reduction in the sandblasting amount. Summary of the invention
[0004] The purpose of the present invention is to solve the above deficiencies in the prior art and provide a uniform sandblasting device based on compressed air vibration.
[0005] A uniform sandblasting device based on compressed air vibration includes an air compressor, a pneumatic vibrator, a solenoid valve, and a relay. The pneumatic vibrator is connected to the air compressor through an air pipe, and the pneumatic vibrator is installed on the support legs of a platform through a fixed seat. A plurality of support legs are provided at the bottom of the platform. The platform is used to place the sandblasting machine. The solenoid valve is provided between the pneumatic vibrator and the air compressor, and the solenoid valve is connected to the relay. A connecting portion fixedly connected to the vibrator is provided on the bottom surface of the fixed seat. The fixed seat is a U-shaped structure, and the fixed seat is clamped on the support legs and passed through by a screw rod. At least two nuts are provided on both sides of the screw rod for fastening.
[0006] Furthermore, the pneumatic vibrator comprises:
[0007] A vibrating body, wherein the vibrating body is provided with a vibrating cavity along the axial direction, and an air inlet hole communicating with the vibrating cavity is provided on the side wall;
[0008] A vibration core, wherein the vibration core is located in the vibration cavity and is gap-matched with the vibration cavity, wherein the maximum gap between the vibration core and the vibration body is less than 0.15 mm, and in the length direction, the vibration cavity is divided into a first chamber and a second chamber by the vibration core, and a first air path channel and a second air path channel respectively connected to the first chamber and the second chamber are provided in the vibration core, wherein the opening of the first air path channel is close to the second chamber, and the opening of the second air path channel is close to the first chamber;
[0009] The end head assembly includes a first end head and a second end head, wherein the first end head and the second end head cooperate with the first chamber and the second chamber respectively, wherein the first end head is provided with an exhaust hole connecting the first chamber and the outside, and the second end head is elastically connected to the vibration core in the second chamber through an elastic member.
[0010] Furthermore, the inner side wall of the vibration cavity is provided with a first annular groove and a second annular groove at intervals along the length direction, and the first annular groove and the second annular groove are connected to each other through an air path groove;
[0011] In the initial state, the air inlet hole is closer to the second chamber than the first air path channel, and the positional relationship between the air inlet hole, the second air path channel, the first chamber and the first annular groove meets the following requirements: when communication is achieved between the air inlet hole and the opening of the second air path channel, communication is achieved between the first annular groove and the first chamber, and at the same time, the second annular groove and the second chamber are not connected.
[0012] Furthermore, the outer ends of the first end head and the second end head are respectively provided with external threaded holes.
[0013] Furthermore, the inner side wall of the vibration cavity is provided with a first annular groove and a second annular groove at intervals along the length direction, and the first annular groove and the second annular groove are connected to each other through an air path groove;
[0014] In the initial state, the air inlet hole is closer to the second chamber than the first air path channel, and the positional relationship between the air inlet hole, the second air path channel, the first chamber and the first annular groove meets the following requirements: when communication is achieved between the air inlet hole and the opening of the second air path channel, communication is achieved between the first annular groove and the first chamber, and at the same time, communication is achieved between the second annular groove and the second chamber.
[0015] Furthermore, a pressure reducing valve is provided between the solenoid valve and the air compressor.
[0016] Furthermore, the solenoid valve is a two-position four-way solenoid valve.
[0017] Furthermore, the air compressor is one of a screw compressor, a piston air compressor, a vane compressor, a rotary compressor, a reciprocating compressor, and an axial flow compressor.
[0018] Beneficial effect: Compared with the prior art, the present invention assembles a compressed air vibration device on the sandblasting equipment, and uses compressed air under different pressures to drive the vibration effect of the device, so that the sand on the tabletop falls into the sand trough, so as to ensure the uniformity of the sand output and make the product sandblasting effect consistent. At the same time, the working frequency and working time of the vibrator are set by the relay, which can better adapt to work needs. It is fixed to the support leg of the platform through a U-shaped structure fixing seat, and passed through by a screw, and then locked with two nuts on both sides, which can prevent the nuts from loosening due to vibration and causing the vibrator to fall off. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 Schematic diagram of the structure of a pneumatic vibrator.
[0020] Figure 2 Schematic diagram of the explosion structure of the pneumatic vibrator.
[0021] Figure 3 A cross-sectional schematic diagram of a pneumatic vibrator.
[0022] Figure 4 This is a cross-sectional schematic diagram of the pneumatic vibrator from another perspective.
[0023] Figure 5 It is a cross-sectional schematic diagram of the vibration core.
[0024] Figure 6 It is a cross-sectional schematic diagram when the vibration core moves to the right side.
[0025] Figure 7 It is a cross-sectional schematic diagram of another preferred embodiment when the vibration core moves to the right side. DETAILED DESCRIPTION
[0026] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.
[0027] A uniform sandblasting device based on compressed air vibration includes an air compressor, a pneumatic vibrator, a solenoid valve, and a relay. The pneumatic vibrator is connected to the air compressor through an air pipe, and the pneumatic vibrator is installed on the support legs of a platform through a fixed seat. A plurality of support legs are provided at the bottom of the platform. The platform is used to place the sandblasting machine. The solenoid valve is provided between the pneumatic vibrator and the air compressor, and the solenoid valve is connected to the relay. A connecting portion fixedly connected to the vibrator is provided on the bottom surface of the fixed seat. The fixed seat is a U-shaped structure, and the fixed seat is clamped on the support legs and passed through by a screw rod. At least two nuts are provided on both sides of the screw rod for fastening.
[0028] It should be noted that the gas passes through the air compressor through the pressure reducing valve and then enters the pneumatic vibrator through the solenoid valve to provide power for the pneumatic vibrator. The solenoid valve is controlled by the circuit. A relay is connected to the circuit to control the working frequency of the vibrator and the working duration of each time. It is clamped on the support leg through a U-shaped fixing seat, passed through with a screw, and locked with at least two nuts on both sides. Since the nuts on both sides are located on the same screw, the tightening and loosening directions are opposite. Therefore, when the nut on one side is loosened, the nut on the other side will become tighter. One side is locked by two nuts to enhance the tightness.
[0029] Wherein, the pneumatic vibrator comprises a vibrating body 10, a vibrating core 20 and a terminal assembly;
[0030] The vibrating body 10 is provided with a vibrating cavity 101 along the axial direction, and an air inlet 102 connected to the vibrating cavity 101 is provided on the side wall, so as to allow high-pressure gas from the outside to enter the vibrating cavity 101 through the air inlet 102;
[0031] The vibration core 20 is located in the vibration cavity 101 and extends along the axial direction of the vibration body 10, and has a gap fit with the vibration cavity 101, wherein the maximum gap between the vibration core 20 and the vibration body 10 is less than 0.15 mm, that is, the fitting accuracy between the vibration core 20 and the vibration body 10 is less than 1.5 threads, and at the same time, in the length direction, the vibration cavity 101 is divided into a first chamber 103 and a second chamber 104 by the vibration core 20, and at the same time, a first air path channel 201 and a second air path channel 202 respectively connecting the first chamber 103 and the second chamber 104 are provided in the vibration core 20, wherein the opening of the first air path channel 201 is close to the second chamber 104, and the opening of the second air path channel 202 is close to the first chamber 103, that is, the first air path channel 201 and the second air path channel 202 are staggered.
[0032] Wherein, the end head assembly includes a first end head 31 and a second end head 32, wherein the first end head 31 and the second end head 32 are respectively matched with the first chamber 103 and the second chamber 104, wherein the first end head 31 is provided with an exhaust hole 301 connecting the first chamber 103 and the outside, so that based on the aperture size of the exhaust hole 301 and the air pressure in the first chamber 103, the gas in the first chamber 103 can be discharged at a predetermined speed, wherein the second end head 32 is elastically connected to the vibration core 20 in the second chamber 104 through an elastic member 41.
[0033] In simple terms, external high-pressure gas enters the vibration chamber 101 through the air inlet 102. Due to the clearance between the vibration core 20 and the vibration body 10, the gas first enters the first gas path 201 which is closer through the gap, and then enters the first chamber 103 through the first gas path 201, continuously increasing the pressure of the first chamber 103, thereby pushing the vibration core 20 to move toward the second chamber 104. During this period, the exhaust hole 301 is always kept in the exhaust state, but the exhaust speed and exhaust volume are less than the speed and volume of the gas entering the first gas path 201. At the same time, the elastic member 41 is gradually compressed.
[0034] When the vibration core 20 moves to the right until the air inlet 102 is connected to the second air path channel 202, the connection between the air inlet 102 and the first air path channel 201 is automatically cut off, and the high-pressure gas enters the second chamber 104 through the second air path channel 202 and gradually increases the pressure in the second chamber 104. At this time, combined with the exhaust state of the exhaust hole 301, the compressed state of the elastic member 41 and the pressure in the second chamber 104, when the combined force of the three is greater than the pressure of the first chamber 103, the vibration core 20 will move in the opposite direction to the left, forming vibration at the first end 31. Since the gap size between the vibration core 20 and the vibration body 10 is predetermined, the aperture sizes of the first air path channel 201 and the second air path channel 202 are predetermined, and the aperture size of the exhaust hole 301 is predetermined, based on these predetermined design sizes, when high-pressure gas is introduced, such as when 2Mpa of air pressure is introduced through a cylinder, the vibration intensity of the pneumatic vibrator can be accurately controlled within the range of 32N to 188N, and its vibration frequency can also be accurately controlled within the range of 1800vpm to 9300vpm, where vpm refers to the number of vibrations per minute, which can effectively improve the control accuracy of the vibration force and vibration frequency of the pneumatic vibrator. In addition, the key point is that the overall structure of the pneumatic vibrator is compact and the equipment is sophisticated, which can not only effectively save energy consumption, but also facilitate later maintenance.
[0035] Preferably, the diameter of the air inlet hole 102 is 0.6 mm to 3 mm, such as 0.9 mm, 1.3 mm, 1.5 mm, 1.8 mm, 2.4 mm, 2.6 mm or 2.9 mm.
[0036] Further preferably, the diameter of the exhaust hole 301 is 0.6 mm to 2 mm, such as 0.8 mm, 1.2 mm, 1.5 mm or 1.8 mm.
[0037] Preferably, the openings of the first gas passage 201 and the second gas passage 202 are both located in an annular groove extending in the radial direction.
[0038] As a preferred embodiment, Figure 5 and Figure 6 The inner side wall of the vibration cavity 101 is provided with a first annular groove 105 and a second annular groove 106 at intervals along the length direction, wherein the first annular groove 105 and the second annular groove 106 are connected to each other through an air path groove 107;
[0039] In the initial state, the air inlet 102 is closer to the second chamber 104 than the first air path channel 201, and the positional relationship among the air inlet 102, the second air path channel 202, the first chamber 103 and the first annular groove 105 meets the following requirements: when the air inlet 102 is connected with the opening of the second air path channel 202, the first annular groove 105 is connected with the first chamber 103, and at the same time, the second annular groove 106 is not connected with the second chamber 104. In this way, when the air inlet 102 is connected with the opening of the second air path channel 202, the connection relationship between the air inlet 102 and the first air path channel 201 is automatically cut off, and the external high-pressure gas enters the second chamber 104 through the second air path channel 202. At the same time, the first chamber The high-pressure gas in the chamber 103 flows into the second annular groove 106 through the first annular groove 105 and the air path groove 107, but does not flow into the second chamber 104. That is to say, based on the combined force of the above three (combined with the exhaust state of the exhaust hole 301, the compressed state of the elastic member 41 and the pressure in the second chamber 104), the first annular groove 105, the air path groove 107 and the second annular groove 106 can serve as a buffer space for the high-pressure gas in the first chamber 103, thereby relieving part of the pressure of the first chamber 103, so that the vibration core 20 can move faster and in advance toward the direction of the first chamber 103, wherein the advance movement time and the increase in the movement speed of the vibration core 20 are mainly determined based on the volume of the above-mentioned buffer space, but in this way, the vibration force and vibration frequency of the pneumatic vibrator can be further improved.
[0040] As another preferred embodiment, Figure 5 and Figure 7 The inner side wall of the vibration cavity 101 is provided with a first annular groove 105 and a second annular groove 106 at intervals along the length direction, and the first annular groove 105 and the second annular groove 106 are connected to each other through an air path groove 107;
[0041] In the initial state, the air inlet hole 102 is closer to the second chamber 104 than the first air path channel 201, and the positional relationship among the air inlet hole 102, the second air path channel 201, the first chamber 103 and the first annular groove 105 meets the following requirements: when communication is achieved between the air inlet hole 102 and the opening of the second air path channel 202, communication is achieved between the first annular groove 105 and the first chamber 103, and at the same time, communication is achieved between the second annular groove 106 and the second chamber 104. The difference from the aforementioned preferred embodiment lies in that when the air inlet 102 is connected with the opening of the second air path channel 202, the second annular groove 106 is also connected with the second chamber 104. In this way, in the early stage of the vibration core 20 moving to the left, the high-pressure gas in the first chamber 103 will enter the second chamber 104 along the first annular groove 105, the air path groove 107 and the second annular groove 106, which not only serves as a buffer space, but also can quickly change the pressure difference between the two chambers by transferring the high-pressure gas in the first chamber 103 to the second chamber 104, so that the vibration core 20 can move faster and earlier, thereby further improving the vibration force and vibration frequency of the pneumatic vibrator.
[0042] Further preferably, the inner cavity aperture size of the first gas path channel 201, the second gas path channel 202 and the gas path groove 107 meets the following requirements: under the air pressure of 2Mpa, the gas consumption of the vibrator is 93L / min to 96L / min. For example, when the first gas path channel 201, the second gas path channel 202 and the gas path groove 107 are all groove structures, the groove depth size is 0.5mm to 1.5mm, and the groove width size is 1mm to 1.5mm.
[0043] Further preferably, the outer ends of the first end head 31 and the second end head 32 are respectively provided with external threaded holes 302 to facilitate quick connection with external devices.
[0044] Further preferably, the elastic member 41 is implemented as a spring.
Claims
1. A uniform sandblasting device based on compressed air vibration, characterized in that: It includes an air compressor, a pneumatic vibrator, a solenoid valve, and a relay. The pneumatic vibrator is connected to the air compressor through an air pipe, and the pneumatic vibrator is installed on the supporting legs of the platform through a fixed seat. A plurality of supporting legs are provided at the bottom of the platform. The platform is used to place a sandblasting machine. The solenoid valve is arranged between the pneumatic vibrator and the air compressor, and the solenoid valve is connected to the relay. A connecting part fixedly connected to the vibrator is provided on the bottom surface of the fixed seat. The fixed seat is a U-shaped structure, and the fixed seat is clamped on the supporting legs and passed through by a screw. At least two nuts are provided on both sides of the screw for fastening.
2. A uniform sandblasting device based on compressed air vibration according to claim 1, characterized in that: The pneumatic vibrator comprises: A vibrating body, wherein the vibrating body is provided with a vibrating cavity along the axial direction, and an air inlet hole communicating with the vibrating cavity is provided on the side wall; A vibration core, wherein the vibration core is located in the vibration cavity and is gap-matched with the vibration cavity, wherein the maximum gap between the vibration core and the vibration body is less than 0.15 mm, and in the length direction, the vibration cavity is divided into a first chamber and a second chamber by the vibration core, and a first air path channel and a second air path channel respectively connected to the first chamber and the second chamber are provided in the vibration core, wherein the opening of the first air path channel is close to the second chamber, and the opening of the second air path channel is close to the first chamber; The end head assembly includes a first end head and a second end head, wherein the first end head and the second end head cooperate with the first chamber and the second chamber respectively, wherein the first end head is provided with an exhaust hole connecting the first chamber and the outside, and the second end head is elastically connected to the vibration core in the second chamber through an elastic member.
3. A uniform sandblasting device based on compressed air vibration according to claim 2, characterized in that: The inner side wall of the vibration chamber is provided with a first annular groove and a second annular groove at intervals along the length direction, and the first annular groove and the second annular groove are connected to each other through an air path groove; In the initial state, the air inlet hole is closer to the second chamber than the first air path channel, and the positional relationship between the air inlet hole, the second air path channel, the first chamber and the first annular groove meets the following requirements: when communication is achieved between the air inlet hole and the opening of the second air path channel, communication is achieved between the first annular groove and the first chamber, and at the same time, the second annular groove and the second chamber are not connected.
4. A uniform sandblasting device based on compressed air vibration according to claim 3, characterized in that: The outer ends of the first end head and the second end head are respectively provided with external threaded holes.
5. The uniform sandblasting equipment based on compressed air vibration according to claim 3, characterized in that: The inner side wall of the vibration chamber is provided with a first annular groove and a second annular groove at intervals along the length direction, and the first annular groove and the second annular groove are connected to each other through an air path groove; In the initial state, the air inlet hole is closer to the second chamber than the first air path channel, and the positional relationship between the air inlet hole, the second air path channel, the first chamber and the first annular groove meets the following requirements: when communication is achieved between the air inlet hole and the opening of the second air path channel, communication is achieved between the first annular groove and the first chamber, and at the same time, communication is achieved between the second annular groove and the second chamber.
6. The uniform sandblasting equipment based on compressed air vibration according to claim 1, characterized in that: A pressure reducing valve is arranged between the electromagnetic valve and the air compressor.
7. The uniform sandblasting equipment based on compressed air vibration according to claim 1, characterized in that: The solenoid valve is a two-position four-way solenoid valve.
8. The uniform sandblasting equipment based on compressed air vibration according to claim 1, characterized in that: The air compressor is one of a screw compressor, a piston air compressor, a vane compressor, a rotary compressor, a reciprocating compressor, and an axial flow compressor.