Radar level gage based on automatic discharging of powdery materials

Abstract

The invention discloses a radar level gauge based on automatic discharging of powdery materials, and relates to the technical field of radar level gauges. Comprising a body, a barrel is installed at the bottom end of the body, an air injection ring is installed at the bottom of the body, an installation frame is installed on the surface of the barrel, a rotating ring is rotationally connected to the surface of the installation frame, an electric push rod is installed at the top end of the rotating ring, a connecting plate is installed at the extending end of the electric push rod, and a baffle is rotationally connected to the surface of the rotating ring. According to the dust suppression device, dust drifting in air can be collected by arranging a baffle, and dust drifting in the discharging bin can be blown downwards and towards the inner wall by arranging an air spraying ring, a rotating ring, a dust suppression assembly and a connecting plate, so that gathering of the dust around an antenna of the radar level gauge is reduced, interference of the dust on radar waves is reduced, and the service life of the radar level gauge is prolonged. And the radar level gauge can receive clearer and more accurate echo signals, so that the precision of material level measurement is improved.

Description

Technical Field

[0001] This invention relates to the field of radar level gauge technology, specifically to a radar level gauge based on automatic unloading of powdered materials. Background Technology

[0002] A radar level gauge is an advanced instrument that uses high-frequency electromagnetic waves (radar waves) for non-contact continuous measurement. It is mainly used for monitoring the level (height) of solid, liquid, and slurry materials in industrial processes. Its core principle is based on the emission, reflection, and reception of radar waves. It determines the material surface position by calculating the time difference or frequency change, and features high precision, high reliability, and strong adaptability.

[0003] Powdered materials in the unloading hopper may diffuse or become airborne. The dust cloud formed by the diffusion or airborne powder has certain wave absorption characteristics. When radar waves pass through the dust cloud, some energy is absorbed by the dust particles, resulting in a weakening of the signal strength. If dust adheres to the antenna surface, it may reduce the radar wave transmission / reception efficiency, leading to signal attenuation or false echoes. On the other hand, when detecting powdered materials with high humidity, moisture has a certain absorption effect on radar waves. Powdered materials with high humidity will increase the energy loss of radar waves during propagation, resulting in more severe signal attenuation.

[0004] To address the aforementioned issues, innovative design based on existing methods is urgently needed. Summary of the Invention

[0005] The purpose of this invention is to provide a radar level gauge based on automatic unloading of powdered materials, in order to solve the problems mentioned above in the background technology, where dust adhering to the antenna surface may weaken the radar wave transmission / reception efficiency. On the other hand, when detecting powdered materials with high humidity, the high humidity of the powdered materials will cause the radar wave signal to attenuate more severely. The technical solution of this invention addresses the problem that the existing technical solutions are too simplistic and provides a solution that is significantly different from the existing technology.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a radar level gauge for automatic unloading of powdered materials, comprising a body, a cylinder mounted at the bottom of the body, an air jet ring mounted at the bottom of the body, a mounting frame mounted on the surface of the cylinder, a rotating ring rotatably connected to the surface of the mounting frame, an electric push rod mounted at the top of the rotating ring, a connecting plate mounted at the extended end of the electric push rod, a baffle rotatably connected to the surface of the rotating ring, a dust suppression component mounted inside the rotating ring and the baffle, a pressure platform mounted at the bottom of the connecting plate, connecting rods mounted on both sides of the pressure platform, a venting ring mounted at the bottom of the cylinder, and an airflow control component mounted inside the venting ring; The dust suppression assembly includes a rack mounted on the surface of a rotating rod near the end of the baffle. A gear ring is mounted on the bottom of the connecting plate, and the gear ring meshes with the rack. A movable plate is slidably limited inside the baffle. A sliding rod and a pressing rod are mounted on the end of the movable plate away from the baffle. An abutment block is mounted on the end of the movable plate near the inside of the baffle. An adjusting frame is slidably limited inside the baffle.

[0007] Preferably, the number of baffles is four sets, and the four sets of baffles are evenly distributed in a circular shape on the surface of the rotating ring, and a number of blocking strips are installed on the surface of the baffles.

[0008] Preferably, the end of the extrusion rod passes through the rotating rod near one end of the baffle and extends into the interior of the rotating ring. The pressure table has an inclined surface, and the end of the extrusion rod abuts against the inclined surface of the pressure table.

[0009] Preferably, the slide rod is limited to slide within the side end of the baffle, and a spring is sleeved on the surface of the baffle, with the spring connected to the side end of the baffle.

[0010] Preferably, the adjusting frame slides vertically within the baffle, the adjusting frame is an L-shaped plate, and the left side of the adjusting frame and the side end of the baffle are both provided with vents of the same specifications. A spring is installed at the bottom of the adjusting frame, and the other end of the spring is connected to the inner wall of the baffle.

[0011] Preferably, a protrusion is installed at the bottom of the adjusting frame, the bottom of the protrusion is rounded, and the surface of the abutment block is provided with an inclined surface, the inclined surface of the abutment block abutting against the protrusion at the bottom of the adjusting frame.

[0012] Preferably, the airflow control component includes an adjustment ring rotatably connected inside the ventilation ring, a round rod is mounted on the surface of the adjustment ring, a thin rod is slidably limited inside the ventilation ring, a contact plate is mounted at the top of the thin rod, and a pressure plate is mounted at the bottom of the thin rod.

[0013] Preferably, the surface of the vent ring is provided with an inclined groove, and the round rod slides within the inclined groove on the surface of the vent ring.

[0014] Preferably, the pressure plate is arc-shaped and has a beveled surface at the bottom. The beveled surface at the bottom of the pressure plate abuts against the round rod. A spring is sleeved on the surface of the thin rod. The bottom of the spring is connected to the vent ring. The bottom of the connecting rod abuts against the top of the contact plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention, by setting up baffles, can collect airborne dust. Furthermore, the installation of the jet ring, rotating ring, dust suppression components, and connecting plate can blow dust floating inside the unloading hopper downwards and towards the inner wall, thereby reducing dust accumulation around the radar level gauge antenna, reducing dust interference with radar waves, and enabling the radar level gauge to receive clearer and more accurate echo signals, thus improving the accuracy of level measurement. Blowing dust towards the inner wall and downwards allows it to return to the material pile, reducing material waste, increasing material utilization, and lowering production costs.

[0016] This invention, through the setting of a ventilation ring, can form an airflow barrier at the bottom of the bottom cylinder of the radar level gauge. When dust attempts to enter the bottom cylinder of the radar level gauge with the airflow or material movement, the airflow barrier will change the movement trajectory of the dust, preventing it from smoothly entering the inside of the cylinder. This prevents dust, dirt, etc. from adhering to the transmitting and receiving antennas of the radar level gauge, absorbing and scattering radar waves, resulting in signal attenuation and affecting the measurement distance and accuracy.

[0017] This invention, through the airflow control component, can not only increase the air pressure that blows the dust toward the inner wall when the dust humidity is high, but also change the tilt angle of the baffle to avoid the problem of dust with high humidity sticking to the surface of the baffle and making it inconvenient to fall into the material pile. In addition, the airflow control component can also increase the air pressure of the ventilation ring to prevent dust with high humidity from entering the bottom cylinder of the radar level gauge. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present invention from one perspective; Figure 2 This is a schematic diagram of the main structure of the present invention from another perspective; Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A; Figure 4 This is an exploded structural diagram of the connecting plate and the baffle of the present invention; Figure 5 This is a cross-sectional structural diagram of the connecting plate and the baffle of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point B; Figure 7 This is a cross-sectional structural diagram of the baffle of the present invention; Figure 8 This is an exploded structural diagram of the baffle of the present invention; Figure 9 This is a schematic diagram of the exploded structure of the venting ring of the present invention.

[0019] In the diagram: 1. Main body; 2. Cylinder; 3. Air jet ring; 4. Mounting bracket; 5. Rotary ring; 6. Electric push rod; 7. Connecting plate; 8. Baffle; 901. Gear ring; 902. Gear rack; 903. Moving plate; 904. Slide rod; 905. Abutting block; 906. Pressing rod; 907. Adjusting bracket; 10. Pressing platform; 11. Connecting rod; 12. Ventilation ring; 131. Adjusting ring; 132. Round rod; 133. Abutting plate; 134. Pressing plate. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-9 The present invention provides a technical solution: a radar level gauge based on automatic unloading of powdered materials, comprising a body 1, a cylinder 2 installed at the bottom of the body 1, an air jet ring 3 installed at the bottom of the body 1, a mounting frame 4 installed on the surface of the cylinder 2, a rotating ring 5 rotatably connected to the surface of the mounting frame 4, an electric push rod 6 installed at the top of the rotating ring 5, a connecting plate 7 installed at the extended end of the electric push rod 6, a baffle 8 rotatably connected to the surface of the rotating ring 5, a dust suppression component installed inside the rotating ring 5 and the baffle 8, a pressure plate 10 installed at the bottom of the connecting plate 7, connecting rods 11 installed on both sides of the pressure plate 10, a ventilation ring 12 installed at the bottom of the cylinder 2, and an airflow control component installed inside the ventilation ring 12; The dust suppression assembly includes a rack 902 mounted on the surface of the rotating rod at one end of the baffle 8 near the rotating ring 5, a gear ring 901 mounted on the bottom of the connecting plate 7, the gear ring 901 meshing with the rack 902, a movable plate 903 slidingly limited inside the baffle 8, a sliding rod 904 and a pressing rod 906 mounted on the end of the movable plate 903 away from the baffle 8, an abutting block 905 mounted on the end of the movable plate 903 near the inside of the baffle 8, and an adjusting frame 907 slidingly limited inside the baffle 8. This assembly can blow the dust floating inside the unloading hopper downwards and towards the inner wall, thereby reducing the accumulation of dust around the radar level gauge antenna, reducing the interference of dust on radar waves, and enabling the radar level gauge to receive clearer and more accurate echo signals.

[0022] In one embodiment of the present invention, the airflow control assembly includes an adjusting ring 131 rotatably connected inside the venting ring 12. A round rod 132 is mounted on the surface of the adjusting ring 131. A thin rod is slidably limited inside the venting ring 12. An abutment plate 133 is mounted at the top of the thin rod, and a pressure plate 134 is mounted at the bottom of the thin rod. An inclined groove is formed on the surface of the venting ring 12, and the round rod 132 slides within the inclined groove. The pressure plate 134 is arc-shaped and has a slope at its bottom end. The slope at the bottom end of the pressure plate 134 abuts against the round rod 132. The surface of the thin rod... A spring is fitted, with the bottom of the spring connected to the ventilation ring 12. The bottom of the connecting rod 11 abuts against the top of the contact plate 133. When the dust humidity is high, the airflow control component can not only increase the air pressure that blows the dust toward the inner wall, but also change the tilt angle of the baffle 8 to prevent the dust with high humidity from sticking to the surface of the baffle 8. The ventilation ring 12 can form an airflow barrier at the bottom of the bottom cylinder 2 of the radar level gauge. When the dust tries to enter with the airflow or material movement, the airflow barrier will change the movement trajectory of the dust, making it unable to enter the inside of the cylinder 2 smoothly. Dust adhering to the antenna surface may weaken the radar wave transmission / reception efficiency. On the other hand, when detecting powdery materials with high moisture content, the high moisture content of the powdery materials will cause more severe attenuation of the radar wave signal. The specific implementation method is as follows: In use, the rotating ring 5 is first driven by the motor to slowly rotate on the surface of the mounting bracket 4. At this time, the baffle 8 comes into contact with the dust floating in the unloading bin, causing it to remain on the surface of the baffle 8. The blocking strip on the surface of the baffle 8 can effectively collect the dust. At this time, air is introduced into the air jet ring 3 and the ventilation ring 12. The gas is sprayed through the bottom hole of the air jet ring 3. The airflow causes the dust inside the unloading hopper to move downwards, and the downward airflow can blow the dust collected on the surface of the baffle 8 downwards and fall into the bottom of the unloading hopper. The airflow ejected from the bottom hole of the jet ring 3 can enter the interior of the baffle 8 through the top notch. At this time, the airflow inside the baffle 8 is discharged from the side ventilation hole, so that the dust floating on the side of the baffle 8 contacts the inner wall of the unloading hopper, preventing the dust inside the unloading hopper from scattering. The airflow inside the ventilation ring 12 continues to spray out, which can form a gas barrier at the bottom of the ventilation ring 12 to prevent dust from entering the cylinder 2 and affecting the measurement accuracy of the body 1. As one embodiment of the present invention, there are four sets of baffles 8. The four sets of baffles 8 are evenly distributed in a circular shape on the surface of the rotating ring 5. Several blocking strips are installed on the surface of the baffles 8. The four sets of baffles 8 can collect the dust floating in the unloading bin. The blocking strips can prevent the collected dust from being dispersed again. In one embodiment of the present invention, the end of the extrusion rod 906 passes through the rotating rod near the end of the baffle 8 and extends into the interior of the rotating ring 5. The pressure table 10 has an inclined surface, and the end of the extrusion rod 906 abuts against the inclined surface of the pressure table 10. When the pressure table 10 moves down, it abuts against the extrusion rod 906, causing it to drive the moving plate 903 to move inside the baffle 8, thereby adjusting the air pressure at the side of the baffle 8. In one embodiment of the present invention, the slide bar 904 is limited to slide within the side end of the baffle 8, and a spring is sleeved on the surface of the baffle 8. The spring is connected to the side end of the baffle 8. When the pressing rod 906 loses its resistance to the pressure table 10, the spring can drive the moving plate 903 to automatically reset. As one embodiment of the present invention, the adjusting frame 907 slides vertically within the baffle 8. The adjusting frame 907 is an L-shaped plate. The left side of the adjusting frame 907 and the side end of the baffle 8 are both provided with vents of the same specifications. A spring is installed at the bottom of the adjusting frame 907, and the other end of the spring is connected to the inner wall of the baffle 8. When the adjusting frame 907 moves vertically within the baffle 8, the air pressure output from the side end of the baffle 8 can be regulated. In one embodiment of the present invention, a protrusion is installed at the bottom of the adjusting frame 907, and the bottom of the protrusion is provided with a rounded corner. The surface of the contact block 905 is provided with an inclined surface, and the inclined surface of the contact block 905 abuts against the protrusion at the bottom of the adjusting frame 907. The rounded corner at the bottom of the protrusion can reduce the friction force on the contact block 905.

[0023] Working principle: In use, the motor drives the rotating ring 5 to slowly rotate on the surface of the mounting frame 4. At this time, the baffle 8 comes into contact with the dust floating in the unloading bin, causing it to remain on the surface of the baffle 8. The blocking strip on the surface of the baffle 8 can effectively collect the dust. At this time, air is introduced into the jet ring 3 and the ventilation ring 12. The gas is ejected through the bottom hole of the jet ring 3, causing the dust inside the unloading bin to move downward. The downward airflow can also blow the dust collected on the surface of the baffle 8 downward and fall into the bottom of the unloading bin. The airflow ejected from the bottom hole of the jet ring 3 can enter the interior of the baffle 8 through the notch at the top of the baffle 8. At this time, the airflow inside the baffle 8 is discharged from the side ventilation hole, causing the dust floating on the side of the baffle 8 to come into contact with the inner wall of the unloading bin, preventing the dust inside the unloading bin from scattering. The airflow inside the ventilation ring 12 continues to be ejected, which can form a gas barrier at the bottom of the ventilation ring 12 to prevent dust from entering the cylinder 2 and affecting the measurement accuracy of the main body 1. When detecting dust with high humidity, the controller drives the electric push rod 6 to extend and lower the connecting plate 7. The lowering of the connecting plate 7 causes the rack 902 to move downwards as well. The downward movement of the rack 902 causes the gear ring 901 to rotate, which in turn causes the baffle 8 to rotate on the surface of the rotating ring 5, gradually bringing it closer to a vertical position. This prevents the dust with high humidity from adhering too strongly and falling off the surface of the baffle 8. Simultaneously, the downward movement of the connecting plate 7 causes the pressure table 10 to move downwards and contact the pressing rod 906. The pressing rod 906 causes the moving plate 903 to slide inside the baffle 8. The moving plate 903 moves along... The moving contact block 905 abuts against the bottom protrusion of the adjusting frame 907, causing it to move upward, increasing the air pressure of the vent hole at the side end of the baffle 8, so that the dust with higher humidity comes into contact with the inner wall of the unloading hopper. At the same time, the pressure table 10 moves downward, and the connecting rod 11 moves downward to squeeze the contact plate 133. At this time, the contact plate 133 moves downward, causing the pressure plate 134 to move downward to abut against the round rod 132, so that it slides in the inclined groove on the surface of the ventilation ring 12, causing the adjusting ring 131 to rotate inside the ventilation ring 12, which increases the pressure of the airflow ejected from the ventilation ring 12, preventing the dust with higher humidity from entering the cylinder 2 and affecting the measurement accuracy of the body 1.

[0024] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A radar level gauge for automatic unloading of powdered materials, comprising a body (1), characterized in that: The main body (1) is equipped with a cylinder (2) at the bottom end, and an air jet ring (3) is installed at the bottom of the main body (1). The cylinder (2) is equipped with a mounting bracket (4), and a rotating ring (5) is rotatably connected to the surface of the mounting bracket (4). An electric push rod (6) is installed at the top of the rotating ring (5), and a connecting plate (7) is installed at the extended end of the electric push rod (6). A baffle (8) is rotatably connected to the surface of the rotating ring (5). Dust suppression components are installed inside the rotating ring (5) and the baffle (8). A pressure platform (10) is installed at the bottom of the connecting plate (7), and connecting rods (11) are installed on both sides of the pressure platform (10). A ventilation ring (12) is installed at the bottom end of the cylinder (2), and an airflow control component is installed inside the ventilation ring (12). The dust suppression assembly includes a rack (902) installed on the surface of the rotating rod at one end of the baffle (8) near the rotating ring (5), a gear ring (901) installed at the bottom of the connecting plate (7), the gear ring (901) meshing with the rack (902), a movable plate (903) sliding inside the baffle (8), a sliding rod (904) and a pressing rod (906) installed at the end of the movable plate (903) away from the baffle (8), an abutment block (905) installed at the end of the movable plate (903) near the inside of the baffle (8), and an adjusting frame (907) sliding inside the baffle (8).

2. The radar level gauge based on automatic unloading of powdered materials according to claim 1, characterized in that: The number of baffles (8) is four sets, and the four sets of baffles (8) are evenly distributed in a circular shape on the surface of the rotating ring (5). Several blocking strips are installed on the surface of the baffles (8).

3. A radar level gauge for automatic unloading of powdered materials according to claim 1, characterized in that: The end of the extrusion rod (906) passes through the rotating rod near the end of the baffle (8) and extends into the interior of the rotating ring (5). The pressure table (10) has an inclined surface, and the end of the extrusion rod (906) abuts against the inclined surface of the pressure table (10).

4. A radar level gauge for automatic unloading of powdered materials according to claim 1, characterized in that: The slide bar (904) slides within the side end of the baffle (8), and a spring is sleeved on the surface of the baffle (8), with the spring connected to the side end of the baffle (8).

5. A radar level gauge for automatic unloading of powdered materials according to claim 1, characterized in that: The adjusting frame (907) slides vertically within the baffle (8). The adjusting frame (907) is an L-shaped plate. The left side of the adjusting frame (907) and the side end of the baffle (8) are both provided with vents of the same specifications. A spring is installed at the bottom of the adjusting frame (907), and the other end of the spring is connected to the inner wall of the baffle (8).

6. A radar level gauge for automatic unloading of powdered materials according to claim 1, characterized in that: The bottom of the adjusting frame (907) is equipped with a protrusion with rounded corners. The surface of the abutment block (905) is provided with a slope, and the slope of the abutment block (905) abuts against the protrusion at the bottom of the adjusting frame (907).

7. A radar level gauge for automatic unloading of powdered materials according to claim 1, characterized in that: The airflow control assembly includes an adjustment ring (131) rotatably connected inside the ventilation ring (12), a round rod (132) is mounted on the surface of the adjustment ring (131), a thin rod is limited and slidable inside the ventilation ring (12), a contact plate (133) is mounted at the top of the thin rod, and a pressure plate (134) is mounted at the bottom of the thin rod.

8. A radar level gauge for automatic unloading of powdered materials according to claim 7, characterized in that: The surface of the ventilation ring (12) is provided with an inclined groove, and the round rod (132) slides within the inclined groove on the surface of the ventilation ring (12).

9. A radar level gauge for automatic unloading of powdered materials according to claim 7, characterized in that: The pressure plate (134) is arc-shaped and has a sloping surface at the bottom. The sloping surface at the bottom of the pressure plate (134) abuts against the round rod (132). A spring is sleeved on the surface of the thin rod. The bottom of the spring is connected to the vent ring (12). The bottom of the connecting rod (11) abuts against the top of the contact plate (133).

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