Material level detection device for solid material in stock bin and solid stock bin

Abstract

The utility model discloses a material level detection device for solid materials in a stock bin and the solid stock bin, and belongs to the technical field of material level measurement equipment. The device comprises a moving rod, a cambered surface movable cover, a linear bearing guide piece, an adjustable check ring, a spring elastic piece and the like, a sealing structure is formed through a flexible connecting piece (an organ cover), and material interference is avoided. The adjustable check ring is combined with the key connection design, the detection pressure can be adjusted according to the material density, and detection of particles, powder and other solid materials is adapted. The device solves the problems of dust interference, misjudgment of hanging materials, mechanical abrasion, complex calibration and the like in the prior art, has the advantages of being high in environmental adaptability, small in abrasion, convenient and fast to maintain and the like, can effectively achieve automatic detection of the high and low material levels of the stock bin, and guarantees the stability of continuous production.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of material level measuring equipment, is used for the material level detection of granular / powder and other solid silo, and specifically relates to a material level detection device for silo solid material and solid silo. BACKGROUND

[0002] In industrial production, the high / low material level monitoring of solid materials in the silo is crucial to continuous production. The traditional manual detection method is low in efficiency, high in delay and low in accuracy, and is limited by environmental factors such as material toxicity and temperature, and has been difficult to meet the needs of modern production. At present, the silo material detection technology mainly includes ultrasonic, laser, radar, capacitive, mechanical and weighing types: ultrasonic detection is non-contact, suitable for liquid and dust-free granular solid, but is easily disturbed by dust and steam; laser scanning can adapt to different pile angles of granular and powder materials, but has high requirements for working conditions (such as dust concentration); radar detection is suitable for high temperature, high pressure and corrosive medium, has high precision and strong anti-interference ability, but is expensive; capacitive detection can adapt to medium changes, is often used for powder and viscous liquid, but is easily affected by hanging materials and needs frequent calibration; mechanical detection is low in cost and durable, and is often used for point detection, but has single function and poor real-time performance; weighing detection calculates the material level height by directly measuring the mass, but is significantly affected by the change of material density. These technologies have been applied in different scenes, but all have certain limitations.

[0003] The existing material level detection technology has the following significant deficiencies: first, poor environmental adaptability, non-contact technologies such as ultrasonic and laser are easily disturbed in complex working conditions such as high dust and high humidity, resulting in detection failure; second, the cost problem is prominent, radar detection equipment and maintenance cost are high, and the high requirements of ultrasonic and laser technologies on the environment indirectly increase the use cost; third, insufficient reliability, capacitive detection is easily misjudged due to material residues or hanging materials, mechanical detection has the risk of mechanical wear and failure, and weighing detection is affected by the fluctuation of material density, resulting in measurement deviation; fourth, calibration is complex, capacitive and weighing technologies need to be calibrated regularly, and the calibration accuracy directly affects the subsequent measurement results, increasing the difficulty of manual maintenance. The above problems make it difficult for the existing technology to realize efficient and stable material level detection in industrial production, and a new detection scheme with strong adaptability, low cost and high reliability is urgently needed. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model provides a kind of for the solid material of bunker material level detection device.To solve the problems, such as low efficiency of artificial detection, easily restricted by environment in the prior art, avoid the material overflow or equipment idle caused by material level out of control.For the detection needs of powder, granular material, realize stable detection by technical innovation not affected by dust environment and material density variation;Meanwhile, by optimizing the mechanical structure design, on the basis of reducing equipment cost, reduce the mechanical wear of contact type detection, improve the reliability and durability of device;Especially for the hanging material interference problem commonly existing in prior art detection technology, by structure improvement or detection principle optimization, effectively solve the influence of hanging material on detection result, provide practical solution for efficient, accurate monitoring of bunker material in industrial production.

[0005] To achieve the above object, the technical scheme of the utility model is as follows:

[0006] One aspect includes: a kind of for the solid material of bunker material level detection device, including movement rod, movable cover, guide piece, outer tube, retaining ring A, elastic element, retaining ring B, sensor, inductor, bottom plate, outer tube is fixed by screw C on the outside of bunker wallboard, guide piece is set in outer tube, and is fixed on the bunker wallboard by screw B, movement rod passes through the guide piece and passes through bunker wallboard, movable cover is set on the inside of bunker wallboard, and is connected with movement rod by screw A, retaining ring A, elastic element, retaining ring B are set in outer tube, retaining ring A is fixed on movement rod, retaining ring B is movably set on movement rod, elastic element is set on movement rod, and respectively with retaining ring A and retaining ring B abut, bottom plate is fixed on outer tube by screw D and nut, retaining ring B is connected with bottom plate, sensor is set on bottom plate, inductor is set on movement rod, sensor and inductor position cooperation.

[0007] In a structure that can optimize the foregoing scheme, the movable cover is an arc surface structure.The movable cover top adopts arc surface structure, which can better transmit the stress in all directions of the movable cover to the movement rod.

[0008] In a structure that can optimize the foregoing scheme, it further includes a flexible connecting piece, one end of the flexible connecting piece is connected with the movable cover, and the other end of the flexible connecting piece is connected with the bunker wallboard.The setting of the flexible connecting piece can avoid displacement interference caused by the entry of material between the movable cover and the bunker wallboard.

[0009] Further, the flexible connecting piece is an organ case.

[0010] In a structure that can optimize the foregoing scheme, the guide piece is a linear bearing.The linear bearing provides guidance for the movement rod and reduces frictional resistance.

[0011] In a structure that can optimize the foregoing scheme, the inductor is a screw rod, a threaded hole is formed on the moving rod, and the screw rod is arranged in the threaded hole.

[0012] In a structure that can optimize the foregoing scheme, a key is further arranged between the check ring B and the moving rod, the key is fixed on the check ring B, a groove is formed on the moving rod, and the key is matched with the groove.

[0013] In a structure that can optimize the foregoing scheme, the check ring B is connected with the bottom plate through bolts, and the bolts are four, two of which are pull rods and the other two are jacks.

[0014] In a structure that can optimize the foregoing scheme, the elastic member is a spring.

[0015] In addition, the utility model also relates to a solid stock bin, and the stock bin comprises the stock level detection device.

[0016] Compared with the prior art, the stock level detection device and the solid stock bin have the following advantages: environmental adaptability, detection reliability, maintenance convenience and cost control.

[0017] The movable cover adopts a cambered surface structure, which can better adapt to the natural stacking type of the material in the silo, so that the material pressure borne by the movable cover in each direction is more effectively transmitted to the moving rod, thereby guaranteeing the accuracy of force feedback in the detection process; the flexible connecting piece (such as an organ case) forms a reliable sealing structure, which effectively avoids the displacement interference caused by the material entering the gap between the movable cover and the silo wall plate, and significantly improves the environmental adaptability of the detection device to solid materials such as particles and powders, and normal-pressure liquid materials; the adjustable check ring structure can flexibly adjust the force required to press down the movable cover according to the density of different materials by adjusting the spring compression amount, in combination with the key connection design between the check ring and the moving rod, effectively limiting the relative rotation of the two, ensuring the stability and reliability of the adjustment process, and greatly improving the application range of the device; the guide piece adopts a low-friction structure such as a linear bearing, which, in combination with an optimized mechanical transmission design, significantly reduces the wear degree of the contact type detection component, prolongs the service life of the device; the bolts of the adjustable check ring and the sensor are arranged outside the device, and the operator can directly adjust and maintain the parameters without disassembling complex components, which greatly reduces the labor maintenance cost and difficulty, and provides a practical solution with simple structure, strong adaptability and convenient maintenance for efficient and accurate monitoring of the material in the silo in industrial production. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings, which form a part of this description, are included to provide a further understanding of the present application, and are incorporated in and constitute a part of this application. The embodiments illustrated in the drawings, and their description, serve to explain the present application without restricting it in any manner. In the drawings:

[0019] Figure 1 A structure schematic view of the energy-saving hot water tank according to the present application;

[0020] Figure 2 A schematic view of the material level detection device for solid materials in a silo according to the present application;

[0021] Figure 3 An internal structure view of the material level detection device for solid materials in a silo according to the present application;

[0022] Figure 4 A sectional structure view of the material level detection device for solid materials in a silo according to the present application;

[0023] Figure 5 An initial state view of the material level detection device for solid materials in a silo according to the present application;

[0024] Figure 6 A bottom view of the material level detection device for solid materials in a silo according to the present application;

[0025] Figure 7 A partial structure view of the material level detection device for solid materials in a silo according to the present application;

[0026] Figure 8 This is a schematic diagram of the solid material silo structure described in this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Moving rod, 2. Movable cover, 3. Guide component, 4. Screw A, 5. Screw B, 6. Flexible connector, 7. Hopper wall panel, 8. Screw C, 9. Outer cylinder, 10. Retaining ring A, 11. Elastic component, 12. Retaining ring B, 13. Screw D, 14. Nut, 15. Sensor, 16. Sensing component, 17. Key, 18. Bolt, 19. Base plate, 20. Hopper, 21. Material level detection device. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0030] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0033] like Figures 2-7 As shown, Figures 2-7As shown, the material level detection device of the embodiment includes a moving rod 1, a movable cover 2, a guide 3, an outer cylinder 9, a stop ring A 10, an elastic member 11, a stop ring B 12, a sensor 15, a sensing member 16, a bottom plate 19, and a flexible connecting member 6. The outer cylinder 9 is fixed outside the bin wall plate 7 by screws C8 to form an external support structure. The guide 3 is arranged inside the outer cylinder 9 and is fixed on the bin wall plate 7 by screws B5, and is selected as a linear bearing. The moving rod 1 passing through the guide 3 and the bin wall plate 7 is provided with linear guidance and reduced friction resistance. The inside end of the moving rod 1 is connected to the movable cover 2 with an arc surface structure by screws A4. The top curved surface of the movable cover 2 faces the inside of the bin to adapt to the material accumulation angle and ensure that the force in each direction is evenly transmitted to the moving rod 1. The flexible connecting member 6 is selected as an organ case. One end is connected to the edge of the movable cover 2 by a buckle, and the other end is fixed inside the bin wall plate 7 to form a sealed structure to prevent particles and powders from entering the gap between the movable cover and the wall plate to cause displacement interference. The stop ring A 10, the spring as the elastic member 11, and the stop ring B 12 are sequentially arranged inside the outer cylinder 9. The stop ring A 10 is fixed on the moving rod 1 by key groove cooperation and can slide axially along the moving rod 1. The stop ring B 12 is connected to the bottom plate 19 by four bolts, 182 pull rods, and two jacks. The bottom plate 19 is fixed at the end of the outer cylinder 9 by screws D13 and nuts 14. The spring 11 between the two provides elastic force. The position of the stop ring B 12 can be adjusted by rotating the bolt 18 to change the spring compression amount, thereby adjusting the material pressure required for the movable cover 2 to trigger to adapt to different density materials. The key 17 is connected between the stop ring B 12 and the moving rod 1. The key 17 is fixed on the stop ring B 12. The moving rod 1 is provided with a corresponding groove to limit the relative rotation of the two and ensure the adjustment stability. In the detection assembly, the sensing member 16 is a screw rod inserted into the threaded hole outside the moving rod 1, and the exposed length can be adjusted. The sensor 15 such as a proximity switch is fixed on the bottom plate 19 and corresponds to the position of the sensing member 16. When the moving rod 1 is moved by the material pressure, the sensing member 16 triggers the sensor 15 to output the material level signal.

[0034] As shown in Figure 8 The solid bin 20 is provided with the above-mentioned material level detection device 21 at the high material level A and the low material level B positions of the cylinder wall. When the material accumulates to the set height, the movable cover pushes the moving rod 1 to trigger the sensor 15 to send a "full bin" signal. When the material drops to the set height, the spring 11 pushes the moving rod 1 to reset, and the sensor 15 sends a "lack of material" signal. By setting the detection device at different heights of the bin, the automatic monitoring of the high and low material levels is realized.

[0035] As shown in Figure 4 and Figure 5 The working principle of the material level detection device of the embodiment is as follows:

[0036] I. Triggering state when the material level reaches the detection position

[0037] When the solid material such as particles or powder in the bin is accumulated to the detection position, the material exerts uniform pressure on the arc top of the movable cover 2, which is transmitted to the moving rod 1 through the movable cover 2. Since the guide 3 adopts a linear bearing, the moving rod 1 can be displaced in the axial direction without jamming to the outer cylinder 9. At this time, the check ring A10 fixed on the moving rod 1 moves synchronously with the rod, compressing the spring 11 between the check ring A10 and the check ring B12, and the potential energy of the spring increases with the compression amount.

[0038] The inductive element 16 screwed at the outer end of the moving rod 1 enters the sensing area of the sensor 15 such as a proximity switch when the rod is displaced. When the exposed length of the screw reaches the triggering threshold of the sensor, the sensor 15 sends a "material level reached" signal to the control system, indicating that the current material level has reached the detection position as shown in Figure 5 At this time, the flexible connecting piece 6 is naturally compressed with the displacement of the movable cover 2, maintaining the seal between the movable cover and the bin wall plate 7, preventing the material from entering the gap.

[0039] II. Reset state when the material level drops below the detection position

[0040] When the material consumption causes the material level to drop below the detection position, the surface pressure of the movable cover 2 disappears, and the spring 11 pushes the check ring A10 and the moving rod 1 to reset to the inside of the bin due to the release of the elastic potential energy, until the movable cover 2 returns to the initial position as shown in Figure 4 At this time, the inductive element 16 is retracted with the moving rod 1, exiting the sensing area of the sensor 15, and the sensor 15 sends a "material level below the detection position" signal to the control system, indicating that the replenishment operation needs to be performed.

[0041] III. Self-adaptive adjustment mechanism

[0042] By adjusting the axial position of the check ring B12 through the external bolt 18, the initial compression amount of the spring 11 can be changed, thereby adjusting the minimum material pressure required for the movable cover 2 to trigger: for materials with high density such as ore particles, the spring compression amount is increased to increase the triggering threshold, avoiding false triggering caused by slight accumulation of the material; for materials with low density such as fly ash, the spring compression amount is reduced to reduce the triggering threshold, ensuring that lightweight materials can also trigger detection effectively. The key 17 between the check ring B12 and the moving rod 1 ensures that the check ring B12 does not rotate with the screw during the adjustment process, but only moves accurately in the axial direction, ensuring the stability of the pressure adjustment.

[0043] In summary, the embodiment realizes real-time detection and signal feedback of the material level change through the closed-loop design of "material pressure-mechanical transmission-sensor triggering", and effectively adapts to different densities of materials and complex working conditions by combining adjustable elastic components and sealing structures, solving the contradiction between detection sensitivity and environmental adaptability in the prior art.

[0044] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A material level detection device for solid materials in a silo, characterized in that: The system includes a moving rod (1), a movable cover (2), a guide (3), an outer cylinder (9), a retaining ring A (10), an elastic element (11), a retaining ring B (12), a sensor (15), a sensing element (16), and a base plate (19). The outer cylinder (9) is fixed to the outside of the silo wall panel (7). The guide (3) is located inside the outer cylinder (9) and fixed to the silo wall panel (7). The moving rod (1) passes through the silo wall panel (7) through the guide (3). The movable cover (2) is located inside the silo wall panel (7) and connected to the moving rod (1). The retaining ring A (10), the elastic element (11), the retaining ring B (12), the sensor (15), the sensing element (16), and the base plate (19) are all included. 11) The retaining ring B (12) is set inside the outer cylinder (9), the retaining ring A (10) is fixed on the moving rod (1), the retaining ring B (12) is movably set on the moving rod (1), the elastic element (11) is set on the moving rod (1) and abuts against the retaining ring A (10) and the retaining ring B (12) respectively, the base plate (19) is fixed on the outer cylinder (9), the retaining ring B (12) is connected to the base plate (19), the sensor (15) is set on the base plate (19), the sensing element (16) is set on the moving rod (1), and the sensor (15) and the sensing element (16) are positioned to match.

2. The material level detection device for solid materials in a silo according to claim 1, characterized in that: The movable cover (2) has an arc-shaped structure.

3. The material level detection device for solid materials in a silo according to claim 1, characterized in that: It also includes a flexible connector (6), one end of which is connected to the movable cover (2), and the other end is connected to the silo wall panel (7).

4. The material level detection device for solid materials in a silo according to claim 3, characterized in that: The flexible connector (6) is a bellows cover.

5. The material level detection device for solid materials in a silo according to claim 1, characterized in that: The guide component (3) is a linear bearing.

6. The material level detection device for solid materials in a silo according to claim 1, characterized in that: The sensing element (16) is a screw element, and the moving rod (1) has a threaded hole, and the screw element is set in the threaded hole.

7. The material level detection device for solid materials in a silo according to claim 1, characterized in that: It also includes a key (17), with the key (17) placed between the retaining ring B (12) and the moving rod (1).

8. The material level detection device for solid materials in a silo according to claim 1, characterized in that: The retaining ring B (12) is connected to the base plate (19) by bolts (18), of which there are 4 bolts (18), 2 of which are tie rods and 2 are push rods.

9. The material level detection device for solid materials in a silo according to claim 1, characterized in that: The elastic element (11) is a spring.

10. A solid material silo, characterized in that, include: The material level detection device according to any one of claims 1-9, wherein the material level detection device (21) is at least respectively installed at the high material level and the low material level of the silo (20).

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