Resistance rotation type level gage

Abstract

The invention discloses a damped rotation type level gage. Belongs to the technical field of level gauges. The technical key points are as follows: the device comprises a shell, the top of the shell is in threaded connection with a shell cover, a groove matched with the top end of the shell is formed in the shell cover, a rubber ring is fixedly connected in the groove, a pipe body is integrally formed in the middle of the bottom end of the shell, and the pipe body is in conduction connection with the shell; the inner wall of the pipe body is provided with a bearing and an oil seal which are distributed up and down at an interval and are matched with the rotating rod; the defects that a traditional mechanical level gage still has many defects that the user experience satisfaction degree is seriously affected by the problems of large size, inconvenient deployment and the like, and due to the fact that most of blades on the traditional mechanical level gage are directly welded to a driving shaft of a motor, when different types of blades need to be used, the blades cannot be directly welded to the driving shaft of the motor. And only different material level devices can be replaced, so that the equipment cost is increased.

Description

Technical Field

[0001] The invention relates to the technical field of material level meters, in particular to a rotary paddle type material level meter. Background Art

[0002] Currently, industrial production processes are increasingly demanding the measurement of the level of solid particles or powdered materials. Traditional level detection methods primarily include ultrasonic sensors, radar sensors, and other electronic sensing methods. While these methods offer high accuracy and sensitivity, they are susceptible to interference in high-dust environments, leading to signal distortion or even failure, and failing to meet the stability requirements of practical use. At the same time, mechanical level switches are becoming a popular choice in the market, favored for their simple, reliable structure, and low cost.

[0003] However, traditional mechanical level meters still have many shortcomings. For example, their bulky size and inconvenient deployment seriously affect user experience satisfaction. In addition, most of the blades on traditional mechanical level meters are directly welded to the drive shaft of the motor. As a result, when different types of blades are needed, different level meters can only be replaced, which increases equipment costs. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention provides a rotary paddle level meter. This technical solution solves the many shortcomings of the traditional mechanical level meter proposed in the above background technology, such as the problem of bulky size and inconvenient deployment, which seriously affects the user experience satisfaction. Moreover, most of the blades on the traditional mechanical level meter are directly welded to the drive shaft of the motor, resulting in the need to use different types of blades. Different level meters can only be replaced, thereby increasing the equipment cost.

[0005] In order to achieve the above objects, the technical solution adopted by the present invention is: A rotary paddle level gauge comprises a casing, a casing cover is threadedly connected to the top of the casing, a groove adapted to the top of the casing is provided inside the casing cover, a rubber ring is fixedly connected in the groove, a support ring is fixedly connected to the inner wall of the casing, a mounting plate is connected to the top of the support ring, a drive unit is provided on the mounting plate, the drive unit comprises a motor mounted on the top of the mounting plate, a sensor component is connected to the top of the motor, the motor is electrically connected to the sensor component, a threading hole is provided on the side wall of the casing, a sensor component is provided in the threading hole A cable connector is installed, and a tube body is integrally formed in the middle of the bottom end of the casing. The tube body is conductively connected to the casing, and the output end of the motor is connected to a coupling. The motor is linked to a rotating rod through a coupling, and bearings and oil seals that are distributed in an upper and lower interval and adapted to the rotating rod are provided on the inner wall of the tube body. A retaining spring for fixing the bearing is provided on the inner wall of the tube body. The bottom end of the rotating rod extends through the tube body to the outside of the tube body and is connected to a sleeve rod. A connecting rod is integrally formed at the bottom end of the sleeve rod, and a rotating blade is detachably connected to the connecting rod.

[0006] Preferably, the outer ring of the shell cover is fixedly connected with a plurality of anti-slip bumps distributed in a ring array.

[0007] Preferably, the cable connector is a waterproof and dustproof cable connector, and the motor is a small DC reduction motor.

[0008] Preferably, a mounting ring is fixedly connected to the outer wall of the tube body, and a plurality of mounting holes distributed in a ring array are provided on the mounting ring.

[0009] Preferably, the bottom open end of the tube body is threadedly connected to a cover, and a through hole adapted to the rotating rod is vertically penetrated through the cover.

[0010] Preferably, the sleeve rod is movably mounted on the rotating rod, and the portion of the rotating rod extending out of the tube body is horizontally penetrated by a number of adjustment holes distributed in a linear array, and an adjustment fixing assembly adapted to the adjustment holes is fixedly connected to the proximal end of the top end of the sleeve rod.

[0011] Preferably, the adjustment fixing assembly includes two fixed shells fixedly connected to the outer wall of the sleeve rod and symmetrically arranged, and a limit rod adapted for the adjustment hole is movably arranged inside the two fixed shells, and a retaining ring is fixedly connected to the two limit rods, and a spring sleeved on the limit rod is fixedly connected on the side where the two retaining rings are away from each other, and the ends of the two limit rods away from each other extend to the outside of the fixed shell and are fixedly connected to an L-shaped transmission rod, and the two L-shaped transmission rods are staggered up and down, and a fixed sleeve adapted for the two L-shaped transmission rods is fixedly connected to the outer wall of the sleeve rod, and the two L-shaped transmission rods are slidably arranged in the fixed sleeve together, and a pressure plate is fixedly connected to the end of the L-shaped transmission rod away from the limit rod, and anti-slip grooves are provided on the side where the two pressure plates are away from each other.

[0012] Preferably, a guide block is fixedly connected to the inner wall of the sleeve rod, and a guide groove adapted to the guide block is opened on the outer wall of the rotating rod. When the guide block is slidably set in the guide groove and the limit rod is on the same horizontal plane as one of the adjustment holes, the two limit rods will be aligned with the adjustment holes.

[0013] Preferably, a keyway is provided at the bottom end of the connecting rod, the rotating blade is clamped in the keyway, a fixing bolt is passed between the connecting rod and the rotating blade, a nut is threadedly connected to the fixing bolt, the rotating blade is detachably connected to the connecting rod through the cooperation of the fixing bolt and the nut, and an elastic limiting clamp located on the outside of the nut is passed on the fixing bolt.

[0014] Preferably, the rotating blade is a flat fan-shaped sheet made of stainless steel, and its surface is specially treated to form an anti-static coating.

[0015] Compared with the prior art, the present invention provides a rotary paddle level meter with the following beneficial effects: 1. The present invention provides a rubber ring and an oil seal, so that the casing and the casing cover are threadedly connected to form a closed chamber, covering the entire internal mechanism. This effectively improves the long-term service performance of the instrument in dusty environments, reduces the false alarm rate, and also enhances the system's fault tolerance margin.

[0016] 2. The present invention significantly reduces the floor space occupied by carefully optimizing the parts layout. The overall structure of the instrument is compact, easy to carry and store, quick to install, and easy to use, allowing customers to flexibly arrange limited space resource allocation plans.

[0017] 3. The present invention provides fixing bolts and nuts so that the rotating blades and the connecting rod can be detachably connected. When different types of blades are needed, only different blades need to be replaced without replacing the level meter, thereby saving equipment costs.

[0018] 4. The present invention provides an adjustment hole and an adjustment fixing assembly so that the rotating rod and the sleeve rod are adjustable. The extension length of the sleeve rod can be adjusted according to the on-site installation environment of the level meter, thereby adjusting the operating height of the rotating blade, so that the level meter can be suitable for monitoring materials at various heights, thereby improving the scope of application of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0020] Figure 2 Schematic diagram of the internal structure of the casing in the present invention.

[0021] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure.

[0022] Figure 4 For the present invention Figure 2 Schematic diagram of the enlarged structure at point B.

[0023] Figure 5 It is a partial cross-sectional view of the present invention.

[0024] Figure 6 Schematic diagram of the external structure of the adjustment and fixing assembly in the present invention.

[0025] Figure 7 Schematic diagram of the internal structure of the adjusting and fixing assembly in the present invention.

[0026] Figure 8 It is a structural schematic diagram of the guide groove in the present invention.

[0027] The numbers in the figure are: 1. casing; 2. casing cover; 3. rubber ring; 4. support ring; 5. mounting plate; 6. motor; 7. sensor component; 8. cable connector; 9. tube body; 10. coupling; 11. rotating rod; 12. bearing; 13. oil seal; 14. retaining spring; 15. sleeve rod; 16. connecting rod; 17. rotating blade; 18. anti-slip bump; 19. mounting ring; 20. mounting hole; 21. sealing cover; 22. adjustment hole; 23. adjustment fixing assembly; 2301. fixed casing; 2302. limiting rod; 2303. retaining ring; 2304. spring; 2305. L-shaped transmission rod; 2306. fixing sleeve; 2307. pressure plate; 24. guide block; 25. guide groove; 26. fixing bolt; 27. nut; 28. elastic limiting clamp. DETAILED DESCRIPTION

[0028] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0029] Please refer to Figures 1 to 8As shown, a rotary paddle level meter comprises a casing 1, the top of the casing 1 is threadedly connected to a casing cover 2, and the threaded connection between the casing 1 and the casing cover 2 can achieve a preliminary sealing effect, a groove adapted to the top of the casing 1 is provided inside the casing cover 2, a rubber ring 3 is fixedly connected in the groove, and the connection between the casing 1 and the casing cover 2 can be completely sealed by providing the rubber ring 3, a support ring 4 is fixedly connected to the inner wall of the casing 1, a mounting plate 5 is connected to the top of the support ring 4, and the motor 6 is conveniently fixedly installed inside the casing 1 by providing the support ring 4 and the mounting plate 5, and a drive unit is provided on the mounting plate 5, and the drive unit comprises a motor 6 mounted on the top of the mounting plate 5, and a sensor component 7 is connected to the top of the motor 6, and the motor 6 is electrically connected to the sensor component 7. When the speed of the motor 6 is affected, it drops until it stops. When in the state, the sensor component 7 triggers an alarm signal back to the central control system. A wire threading hole is provided on the side wall of the housing 1, and a cable connector 8 is installed in the threading hole. A tube body 9 is integrally formed in the middle of the bottom end of the housing 1. The tube body 9 is electrically connected to the housing 1. The output end of the motor 6 is connected to a coupling 10. The motor 6 is linked to a rotating rod 11 through the coupling 10. The inner wall of the tube body 9 is provided with bearings 12 and oil seals 13 distributed vertically and adapted to the rotating rod 11. The oil seal 13 can seal the gap between the tube body 9 and the rotating rod 11. The cooperation between the rubber ring 3 and the oil seal 13 forms a closed chamber between the housing 1 and the housing cover 2, covering the entire internal mechanism, effectively improving the long-term service performance of the instrument in dusty environments, reducing the false alarm rate, and also enhancing the system's fault tolerance margin. The bearing 12 can support the rotating rod 11, allowing the rotating rod 11 to rotate stably. A retaining spring 14 for fixing the bearing 12 is provided on the inner wall of the tube body 9. The bottom end of the rotating rod 11 extends through the tube body 9 to the outside of the tube body 9 and is connected to a sleeve rod 15. A connecting rod 16 is integrally formed at the bottom end of the sleeve rod 15, and a rotating blade 17 is detachably connected to the connecting rod 16.

[0030] Furthermore, the outer ring of the shell cover 2 is fixedly connected with a number of anti-slip bumps 18 distributed in a ring array. The anti-slip bumps 18 can increase the friction between the shell cover 2 and the hand, thereby making it easier for people to unscrew the shell cover 2 and improving the convenience of using the material level meter.

[0031] Furthermore, the cable connector 8 is a waterproof and dustproof cable connector, and the motor 6 is a small DC reduction motor.

[0032] Furthermore, a mounting ring 19 is fixedly connected to the outer wall of the tube body 9, and a plurality of mounting holes 20 distributed in a circular array are opened on the mounting ring 19. Through the cooperation of the mounting ring 19, the mounting holes 20 and the bolts, the material level meter is fixedly mounted on the container to be measured.

[0033] Furthermore, a cover 21 is threadedly connected to the bottom open end of the tube body 9 , and a through hole adapted to the rotating rod 11 is vertically penetrated through the cover 21 . The cover 21 can protect the oil seal 13 in the tube body 9 .

[0034] Furthermore, the sleeve rod 15 is movably sleeved on the rotating rod 11, and the portion of the rotating rod 11 extending out of the tube body 9 is penetrated by a plurality of adjustment holes 22 distributed in a linear array in the horizontal direction, and an adjustment fixing component 23 adapted to the adjustment hole 22 is fixedly connected to the proximal end of the top of the sleeve rod 15. When adjusting the extended length of the sleeve rod 15, the adjustment fixing component 23 is aligned with the adjustment hole 22 at the corresponding position by sliding the sleeve rod 15, and then the sleeve rod 15 is fixed by adjusting the fixing component 23 and the adjustment hole 22 to complete the adjustment of the sleeve rod 15. The adjustable setting of the sleeve rod 15 facilitates the adjustment of the operating height of the rotating blade 17, so that the material level meter can be used for monitoring materials at various heights, thereby improving the scope of application of the device.

[0035] Furthermore, the adjustment fixing assembly 23 includes two fixed shells 2301 fixedly connected to the outer wall of the sleeve rod 15 and symmetrically arranged. A limiting rod 2302 adapted to the adjustment hole 22 is movably arranged inside the two fixed shells 2301. A retaining ring 2303 is fixedly connected to the two limiting rods 2302. A spring 2304 sleeved on the limiting rod 2302 is fixedly connected to the side of the two retaining rings 2303 away from each other. The ends of the two limiting rods 2302 away from each other extend to the outside of the fixed shell 2301 and are fixedly connected. There is an L-shaped transmission rod 2305, and the two L-shaped transmission rods 2305 are staggered up and down. A fixed sleeve 2306 that is compatible with the two L-shaped transmission rods 2305 is fixedly connected to the outer wall of the sleeve rod 15. The two L-shaped transmission rods 2305 are slid together in the fixed sleeve 2306, and a pressure plate 2307 is fixedly connected to the end of the L-shaped transmission rod 2305 away from the limit rod 2302. Anti-slip grooves are provided on the side of the two pressure plates 2307 away from each other. The anti-slip grooves prevent people from slipping when pressing the pressure plate 2307. When adjusting the sleeve rod 15, the two pressure plates 2307 are pressed relative to each other. With the cooperation of the two L-shaped transmission rods 2305, the two limit rods 2302 are driven away from each other, and the spring 2304 is compressed by the retaining ring 2303. When the two limit rods 2302 are completely out of the adjustment hole 22, the sleeve rod 15 can be pulled out to the appropriate length, and then the limit rod 2302 is aligned with the nearest adjustment hole 22, and then the pressure plate 2307 is released. Under the elastic action of the spring 2304, the retaining ring 2303 is pushed back to its position, thereby driving the limit rod 2302 to be inserted into the adjustment hole 22 and fixing the sleeve rod 15 to complete the adjustment. The operation is simple and convenient, and the adjustment efficiency is high.

[0036] Furthermore, a guide block 24 is fixedly connected to the inner wall of the sleeve rod 15, and a guide groove 25 adapted to the guide block 24 is opened on the outer wall of the rotating rod 11. When the guide block 24 is slidably set in the guide groove 25 and the limit rod 2302 is on the same horizontal plane as one of the adjustment holes 22, the two limit rods 2302 will be aligned with the adjustment holes 22. By setting the guide block 24 and the guide groove 25, it is possible to avoid horizontal misalignment between the limit rod 2302 and the adjustment hole 22 when the sleeve rod 15 is pulled, so that the limit rod 2302 can be quickly and accurately inserted into the adjustment hole 22.

[0037] Furthermore, a keyway is provided at the bottom end of the connecting rod 16, and the rotating blade 17 is clamped in the keyway. A fixing bolt 26 is provided between the connecting rod 16 and the rotating blade 17, and a nut 27 is threadedly connected to the fixing bolt 26. The rotating blade 17 is detachably connected to the connecting rod 16 through the cooperation of the fixing bolt 26 and the nut. An elastic limiting clamp 28 is provided on the fixing bolt 26 and is located outside the nut 27. The elastic limiting clamp 28 can limit the position of the nut 27, effectively preventing the nut 27 from falling off. By providing the fixing bolt 26 and the nut 27, the rotating blade 17 is detachably connected to the connecting rod 16. When a different type of rotating blade 17 is needed, the previous rotating blade 17 can be directly removed and replaced with a new one without replacing the level meter, thereby saving equipment costs.

[0038] Furthermore, the rotating blade 17 is a flat fan-shaped sheet made of stainless steel, and its surface is specially treated to form an anti-static coating, which can effectively prevent the rotating blade 17 from absorbing dust and impurities and avoid affecting the smooth rotation of the rotating blade 17.

[0039] The working principle and usage process of this device: When in use, the level meter is fixedly installed on the top of the container to be measured through the cooperation of the mounting ring 19, the mounting hole 20 and the bolt to monitor the material height in the container. When the material in the container to be measured rises and touches the rotating blade 17, resistance is generated behind the rotating blade 17, causing the speed of the motor 6 to drop until it stops. The sensor component 7 will trigger an alarm signal back to the central control system, prompting the staff to take corresponding measures to adjust the material height in the container. On the contrary, if no obstacle is found when the rotating blade 17 rotates, it will continue to operate at a constant speed, indicating that the current material height is within a safe range and there is no need to worry about overflow risks.

[0040] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary paddle level meter, comprising a housing (1), characterized in that: The top of the housing (1) is threadedly connected to a housing cover (2), a groove adapted to the top of the housing (1) is provided inside the housing cover (2), a rubber ring (3) is fixedly connected in the groove, a support ring (4) is fixedly connected to the inner wall of the housing (1), a mounting plate (5) is connected to the top of the support ring (4), a drive unit is provided on the mounting plate (5), the drive unit includes a motor (6) mounted on the top of the mounting plate (5), a sensor component (7) is connected to the top of the motor (6), the motor (6) is electrically connected to the sensor component (7), a wire threading hole is provided on the side wall of the housing (1), a cable connector (8) is installed in the wire threading hole, and a pipe is integrally formed in the middle of the bottom end of the housing (1). The tube body (9) is electrically connected to the housing (1), the output end of the motor (6) is connected to a coupling (10), the motor (6) is linked to a rotating rod (11) through the coupling (10), bearings (12) and oil seals (13) are arranged on the inner wall of the tube body (9) and are distributed in an upper and lower interval and adapted to the rotating rod (11), a retaining spring (14) for fixing the bearing (12) is arranged on the inner wall of the tube body (9), the bottom end of the rotating rod (11) passes through the tube body (9) and extends to the outside of the tube body (9) and is connected to a sleeve rod (15), a connecting rod (16) is integrally formed at the bottom end of the sleeve rod (15), and a rotating blade (17) is detachably connected to the connecting rod (16).

2. A rotary paddle level gauge according to claim 1, characterized in that: The outer ring of the shell cover (2) is fixedly connected to a plurality of anti-slip bumps (18) distributed in an annular array.

3. A rotary paddle level gauge according to claim 1, characterized in that: The cable connector (8) is a waterproof and dustproof cable connector, and the motor (6) is a small DC reduction motor.

4. A rotary paddle level gauge according to claim 1, characterized in that: The outer wall of the tube body (9) is fixedly connected to a mounting ring (19), and a plurality of mounting holes (20) distributed in a ring array are provided on the mounting ring (19).

5. The rotary paddle level gauge according to claim 1, characterized in that: The bottom open end of the tube body (9) is threadedly connected to a cover (21), and a through hole matching the rotating rod (11) is vertically penetrated through the cover (21).

6. The rotary paddle level gauge according to claim 1, characterized in that: The sleeve rod (15) is movably sleeved on the rotating rod (11); a portion of the rotating rod (11) extending out of the tube body (9) is penetrated horizontally by a plurality of adjustment holes (22) distributed in a linear array; an adjustment fixing assembly (23) adapted to the adjustment holes (22) is fixedly connected to the proximal end of the top end of the sleeve rod (15).

7. The rotary paddle level gauge according to claim 6, characterized in that: The adjusting and fixing assembly (23) comprises two fixed shells (2301) fixedly connected to the outer wall of the sleeve rod (15) and symmetrically arranged. A limiting rod (2302) adapted to the adjusting hole (22) is movably arranged inside the two fixed shells (2301). A retaining ring (2303) is fixedly connected to each of the two limiting rods (2302). A spring (2304) sleeved on the limiting rod (2302) is fixedly connected to each of the two retaining rings (2303) on the side away from each other. The ends of the two limiting rods (2302) that are away from each other extend to the fixed shell. An L-shaped transmission rod (2305) is fixedly connected to the outside of the body (2301), and the two L-shaped transmission rods (2305) are arranged in an upper and lower staggered manner. A fixed sleeve (2306) that is compatible with the two L-shaped transmission rods (2305) is fixedly connected to the outer wall of the sleeve rod (15). The two L-shaped transmission rods (2305) are slidably arranged in the fixed sleeve (2306). A pressure plate (2307) is fixedly connected to one end of the L-shaped transmission rod (2305) away from the limit rod (2302), and anti-slip grooves are provided on the sides of the two pressure plates (2307) away from each other.

8. The rotary paddle level gauge according to claim 7, characterized in that: The inner wall of the sleeve rod (15) is fixedly connected to a guide block (24), and the outer wall of the rotating rod (11) is provided with a guide groove (25) adapted to the guide block (24). When the guide block (24) is slidably arranged in the guide groove (25) and the limiting rod (2302) is on the same horizontal plane as one of the adjustment holes (22), the two limiting rods (2302) are aligned with the adjustment holes (22).

9. The rotary paddle level gauge according to claim 1, characterized in that: A keyway is provided at the bottom end of the connecting rod (16), and the rotating blade (17) is clamped in the keyway. A fixing bolt (26) is provided between the connecting rod (16) and the rotating blade (17), and a nut (27) is threadedly connected to the fixing bolt (26). The rotating blade (17) is detachably connected to the connecting rod (16) through the cooperation of the fixing bolt (26) and the nut (), and an elastic limiting clamp (28) is provided on the fixing bolt (26) and is located outside the nut (27).

10. The rotary paddle level gauge according to claim 1, characterized in that: The rotating blade (17) is a flat fan-shaped sheet made of stainless steel, and its surface is specially treated to form an antistatic coating.

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