Energy-saving detection and control device for bin pump level

Abstract

The application discloses a kind of bin pump material level energy-saving detection control device, the bin pump material level energy-saving detection control device includes bin pump conveying pipe, bin pump conveying pipe is communicated with hopper by downcomer, hopper is equipped with exhaust pipe, it is characterized by: downcomer and hopper, downcomer and bin pump conveying pipe are connected by rotating assembly between downcomer, the middle part of the bottom end of downcomer is equipped with middle discharge port, downcomer circumferential surface is equipped with side discharge port, the inside of hopper is equipped with detection assembly, side discharge port is equipped with cleaning mechanism matched with detection assembly, the top of hopper is equipped with auxiliary mechanism matched with bin pump conveying pipe.The application realizes material uniform distribution using rotating assembly, improves material level detection precision;Combined with cleaning mechanism and intermittent detection mechanism, ensure that material level meter long-term stable operation and greatly reduce energy consumption;Through auxiliary mechanism and blowing function, strengthen discharging efficiency and completely remove pipeline residue, guarantee system cleanliness.

Description

Technical Field

[0001] This invention belongs to the field of material conveying control technology, specifically, it relates to an energy-saving detection and control device for silo pump material level. Background Technology

[0002] In pneumatic conveying systems across numerous industries, including power plants, chemicals, and building materials, silo pumps are the core containers that use compressed air to transport powdery materials. These systems deliver powdery materials into silos, and to achieve precise control over the material conveying process, the material position (i.e., material level) within the silo needs to be monitored. Specifically, the conveying process is initiated when the material level is low and stops once the material reaches a set height. This requires effective detection methods to control the start and stop of the conveying process, which utilizes pneumatic conveying.

[0003] However, existing silo pumps exhibit numerous shortcomings in material conveying processes: after conveying materials to the silo using compressed gas, most pumps directly discharge the gas. However, when conveying flammable or easily oxidized materials, protective gas must be introduced. Direct discharge increases both the energy consumption of the compression device and the amount of protective gas required. Regarding material conveying methods, some silo pumps use a single conveying pipeline to transport materials to the silo. During the unloading process, the unevenness of material descent easily leads to conical accumulation of material within the silo. This conical accumulation interferes with the accurate detection of material height, making the detection results unable to accurately reflect the actual height of the material in the silo, thus affecting the normal operation of the conveying system. Furthermore, to solve the conical accumulation problem, some silo pumps require the additional installation of a rotary distributor. However, the installation of a rotary distributor not only increases the complexity and cost of the equipment but also requires an additional drive unit to operate it, which increases energy consumption and the difficulty of equipment maintenance.

[0004] Furthermore, in the material level detection stage, level gauges are currently the primary method. However, during material conveying, powdery materials easily form a layer on the surface of the level gauge sensor. The presence of this layer interferes with the normal operation of the level gauge, causing distortion in the detection signal and resulting in inaccurate detection results. Consequently, it cannot provide a reliable basis for the start-up and shutdown control of the conveying system.

[0005] Therefore, in order to solve the problems existing in the material conveying and level detection and control of the above-mentioned silo pumps, an energy-saving detection and control device for silo pump level is proposed. Summary of the Invention

[0006] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an energy-saving detection and control device for silo pump material level.

[0007] To achieve the aforementioned objective, the technical solution adopted by this invention includes: a silo pump conveying pipe, which is connected to a silo via a discharge pipe, and an exhaust pipe on the silo. The invention is characterized in that: the discharge pipe is connected to the silo and the discharge pipe is connected to the silo pump conveying pipe via a rotating assembly; a central discharge port is located at the bottom center of the discharge pipe; a side discharge port is located on the periphery of the discharge pipe; a detection assembly is located inside the silo; a cleaning mechanism matching the detection assembly is located on the side discharge port; an auxiliary mechanism matching the silo pump conveying pipe is located at the top of the silo; and a gas recovery and utilization mechanism is located on the exhaust pipe for the reuse of compressed gas from pneumatic conveying.

[0008] Preferably, the rotating assembly includes a rotating bearing sleeved on the outside of the feed pipe, the outer ring of the rotating bearing being connected to the hopper, and sealing rings being provided at the top and bottom of the rotating bearing.

[0009] Preferably, the rotating assembly further includes an annular rotating groove inside the pump delivery pipe, a rotating ring is rotatably provided inside the annular rotating groove, the rotating ring is sleeved on the side wall of the discharge pipe, the rotating ring is located above the rotating bearing, and a guide ring is fixedly provided at the top of the discharge pipe.

[0010] Preferably, a purge pipe is inclinedly provided on the side wall of the silo pump delivery pipe, and a one-way valve is provided on the purge pipe.

[0011] In this invention, the rotating component allows the material to be conveyed by airflow, which in turn rotates the discharge pipe. This, combined with the side and center discharge ports, ensures uniform material distribution, prevents accumulation, and does not affect subsequent material level detection.

[0012] Preferably, the detection component includes a level gauge located at the top of the inside of the silo, and a tactile switch is provided on one side of the level gauge, which is electrically connected to the level gauge.

[0013] Preferably, the cleaning mechanism includes a fixed seat set on the side discharge port, a tray set on the fixed seat, and cleaning cotton set on the tray, the cleaning cotton being matched with the level gauge.

[0014] Preferably, a connecting plate is fixedly provided at the end of the tray, and a contact block is provided on the connecting plate, which is matched with a tactile switch.

[0015] In this invention, the detection component, in conjunction with the cleaning mechanism, allows the material discharge pipe to rotate during the material output process, causing the cleaning mechanism to rotate as well. This cleans the level gauge, preventing impurities on the surface from affecting the accuracy of the detection. It can also be used with a tactile switch to enable intermittent operation, eliminating the need for continuous detection and ensuring that the detection is not affected while also being relatively energy-efficient.

[0016] Preferably, the auxiliary mechanism includes a motor mounted on the silo, with a crankshaft fixedly mounted on the motor output end, and the top of the crankshaft being fixedly connected to the side wall of the silo pump delivery pipe via a bearing seat.

[0017] Preferably, the auxiliary mechanism further includes a collar sleeved in the middle of the crankshaft, with a striking block connected to the side wall of the collar via a rotating component, and a sleeve provided on the side wall of the silo pump delivery pipe, with a sliding groove provided inside the sleeve, and the striking block slidingly engaging with the sliding groove.

[0018] Preferably, a rubber pad is fixedly installed at one end of the chute near the pump delivery pipe, and the rubber pad matches the striking block.

[0019] In this invention, an auxiliary mechanism can assist in the feeding process, and after the conveying is completed, the conveying pipe of the silo pump can be cleaned to avoid material residue and ensure the cleanliness of the interior.

[0020] Preferably, the gas recovery and utilization mechanism includes a conical guide hole at the bottom of the exhaust pipe, a filter screen at the bottom of the conical guide hole, a gas guide pipe at the top of the exhaust pipe, an acceleration section on the gas guide pipe, an arc-shaped pipe at an incline connected to the acceleration section and extending into the delivery pipe of the silo pump, two sets of arc-shaped pipes being symmetrical about the axis of the feed pipe, and a recovery pipe at an incline on one side of the exhaust pipe, with an electrically controlled valve on the recovery pipe.

[0021] In this invention, the gas recovery and utilization mechanism facilitates the re-introduction of compressed gas into the discharge pipe after the gas is discharged from the hopper, which can assist in the discharge and also peel off the material adhering to the pipe wall and convey it downward with the main flow, reducing the frequency of pipe blockage and cleaning. The gas can then be processed and recovered for recompression and reuse, and the amount of protective gas used can be monitored.

[0022] Compared with the prior art, the advantages of the present invention include:

[0023] (1) The present invention provides a silo pump level energy-saving detection and control device, which realizes the integrated optimization of material conveying, level detection and pipeline maintenance. It uses rotating components to achieve uniform material distribution and improve the level detection accuracy. Combined with cleaning mechanism and intermittent detection mechanism, it ensures long-term stable operation of level gauge and significantly reduces energy consumption. Through auxiliary mechanism and purging function, it enhances material discharge efficiency and thoroughly removes pipeline residues, ensuring system cleanliness. The overall solution is efficient, energy-saving and reliable.

[0024] (2) The present invention provides a silo pump material level energy-saving detection and control device. With the help of the rotating component, the feeding pipe can rotate during the conveying process. Combined with the design of the central discharge port and the side discharge port, the material can be evenly distributed in the silo, effectively avoiding the cone-shaped accumulation problem caused by the traditional feeding method, thereby improving the accuracy of material level detection.

[0025] (3) The present invention provides a silo pump level energy-saving detection and control device. The cleaning mechanism and the detection component work together so that the cleaning cotton can wipe the surface of the level gauge during the rotation of the feed pipe, preventing material adhesion from affecting the detection accuracy. At the same time, the intermittent operation of the level gauge is realized through the cooperation of the light touch switch and the contact block, which not only ensures the detection effect, but also achieves the purpose of energy saving.

[0026] (4) The present invention provides a silo pump material level energy-saving detection and control device, which drives the crankshaft to rotate by a motor, and with the help of a collar, rotating parts and a striking block, can vibrate and strike the silo pump conveying pipe to assist in material feeding and avoid material residue. In addition, the setting of the purging pipe enables the cleaning of the inner wall of the silo pump conveying pipe and the material feeding pipe after the conveying is completed, ensuring the cleanliness of the inside of the pipe.

[0027] (5) The energy-saving detection and control device for material level of a silo pump provided by the present invention accelerates the discharged gas through a conical guide hole and initially intercepts powder with a filter screen to reduce the material from escaping with the gas; the acceleration section of the air guide pipe further enhances the airflow speed, and combined with the reverse inclined arc pipe design, the two airflows form a spiral tangential force in the silo pump conveying pipe, which not only accelerates the axial conveying of materials and improves the feeding efficiency through spiral motion, but also uses the rotational scouring effect to continuously peel off the material attached to the pipe wall, effectively suppressing the pipe blockage problem and reducing the frequency of daily cleaning and maintenance; at the same time, the protective gas without carrying materials is directionally recovered through the recovery pipe, and can be recompressed and recycled after treatment, which reduces the consumption of protective gas, reduces operating costs, and avoids the direct emission of dust-containing gas, taking into account both environmental protection and efficient resource utilization;

[0028] (6) The energy-saving detection and control device for material level of silo pump provided by the present invention optimizes the angle of the connecting pipe and the radius of curvature of the arc pipe. When the gas accelerated in the acceleration section enters the conveying pipe of the silo pump, it maintains a high flow rate and forms a stable tangential force rotating along the pipe wall through the matching of angle and curvature. This tangential force forms a spiral coupling with the direction of material gravity, which drives the material to spiral down along the pipe axis, significantly improving the feeding speed. At the same time, the pipe wall scouring effect of the spiral airflow can reduce the risk of adhesion. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is an overall schematic diagram of a silo pump material level energy-saving detection and control device according to the present invention;

[0031] Figure 2 This is a schematic diagram of the structure of the silo pump delivery pipe and the silo in a silo pump level energy-saving detection and control device of the present invention;

[0032] Figure 3 This is a schematic diagram of a portion of the structure inside the silo in a silo pump level energy-saving detection and control device of the present invention;

[0033] Figure 4 This is a schematic diagram of the material discharge pipe in a silo pump material level energy-saving detection and control device of the present invention;

[0034] Figure 5 This is a schematic diagram of the structure of the feed pipe and the conveying pipe of the silo pump in the energy-saving detection and control device for material level of a silo pump according to the present invention;

[0035] Figure 6 This is a partial schematic diagram of the feed pipe and guide ring in a silo pump material level energy-saving detection and control device of the present invention;

[0036] Figure 7 This is a schematic diagram of the side outlet and discharge pipe portion of a silo pump material level energy-saving detection and control device according to the present invention;

[0037] Figure 8 This is a partial structural schematic diagram of a silo pump material level energy-saving detection and control device according to the present invention;

[0038] Figure 9 This is a schematic diagram of the auxiliary mechanism in a silo pump level energy-saving detection and control device of the present invention;

[0039] Figure 10 This is a schematic diagram of the gas recovery and utilization mechanism in a silo pump level energy-saving detection and control device of the present invention.

[0040] Figure label:

[0041] 11. Silo pump delivery pipe; 12. Silo; 13. Exhaust pipe; 21. Purge pipe; 22. One-way valve; 31. Discharge pipe; 32. Central discharge port; 33. Side discharge port; 41. Level gauge; 42. Tactile switch; 51. Fixed base; 52. Support plate; 53. Cleaning cotton; 54. Connecting plate; 55. Contact block; 61. Rotating bearing; 62. Sealing ring; 63. Annular groove; 64. Rotating ring; 65. Guide ring; 71. Motor; 72. Crankshaft; 73. Bearing housing; 81. Collar; 82. Rotating component; 83. Striking block; 84. Sleeve; 85. Slide groove; 86. Rubber pad; 91. Air guide pipe; 92. Recovery pipe; 93. Electrically controlled valve; 94. Acceleration section; 95. Connecting pipe; 96. Arc-shaped pipe; 97. Conical guide hole; 98. Filter screen. Detailed Implementation

[0042] In view of the shortcomings of the prior art, the inventors of this invention, through long-term research and extensive practice, have proposed the technical solution of this invention. The technical solution, its implementation process, and principles will be further explained below with reference to the accompanying drawings and specific implementation examples in the embodiments of this application.

[0043] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. The described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, the present invention covers any substitutions, modifications, equivalent methods and solutions made on the spirit, principles and scope of the present invention as defined by the claims. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] In the description of this application, the terms "first," "second," "third," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms "a" or "one," and similar words, do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms "comprising" or "including," and similar words, mean that the elements or objects preceding "comprising" or "including" encompass the elements or objects listed following "comprising" or "including," and their equivalents, but do not exclude other elements or objects. The terms "connected" or "linked," and similar words, are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0045] In the description of this application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this application and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, when using positional terms such as "both sides," "outer side," and "upper and lower," it should be understood that they are used only for ease of understanding and description, taking into account that the structure may be oriented to other positions.

[0046] In the description of this application, unless otherwise expressly specified and limited, the technical or scientific terms used shall have the ordinary meaning understood by a person with ordinary skills in the art to which this application pertains. Terms such as “installation,” “connection,” and “joining” shall be interpreted broadly, for example, as fixed connection, detachable connection, mating connection, or integral connection. For a person skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0047] The present invention aims to introduce and explain the structural composition of a silo pump level energy-saving detection and control device and the cooperation relationship between the various components. Unless otherwise specified, the dimensions, materials and manufacturing processes of the various components in the silo pump level energy-saving detection and control device in the present invention can be selected according to specific circumstances, and no special limitations or explanations are made here.

[0048] Furthermore, to provide the public with a better understanding of the present invention, certain specific details are described in detail in the following description of the invention. However, those skilled in the art will fully understand the invention even without these detailed descriptions.

[0049] Example 1

[0050] Please see Figures 1-10 A silo pump level energy-saving detection and control device includes a silo pump conveying pipe 11, which is connected to the output end of the silo pump. In conjunction with an air compressor (not shown), the device utilizes the kinetic energy of compressed air to propel powdery materials through the pipe, achieving efficient material transport. The silo pump conveying pipe 11 is connected to a silo 12 via a discharge pipe 31, allowing materials to be transported into the silo 12. An exhaust pipe 13 is installed on the silo 12, and the exhaust pipe 13 is equipped with a gas recovery and utilization mechanism for recycling the compressed gas used in pneumatic conveying. This prevents the compressed gas from being directly discharged after material transport, thus avoiding energy waste. When transporting certain powdery materials (such as coal powder, metal powder, etc.) that are flammable and easily oxidized, protective compressed gases (such as nitrogen, carbon dioxide, etc.) are required for transport protection. This device facilitates the recovery and reuse of protective gases, reducing their consumption. It also assists in material transport and discharge. The gas recovery and utilization mechanism includes a conical guide hole 97 located at the bottom of the exhaust pipe 13. The conical guide hole 97... Figure 10As shown, the inner diameter of the conical guide hole 97 decreases from bottom to top. The protective gas in the hopper 12 is discharged through the conical guide hole 97 in the exhaust pipe 13. Due to the gradually decreasing cross-sectional area, the airflow can be accelerated. A filter screen 98 is provided at the bottom of the conical guide hole 97 to initially intercept and filter the powder in the hopper. A guide pipe 91 is provided at the top of the exhaust pipe 13. An acceleration section 94 is provided on the guide pipe 91 (a Venturi tube or similar structure can be used to accelerate the gas, facilitating its entry into the hopper pump conveying pipe 11, and then assisting in the conveying and feeding of the powder. This is a relatively mature technology and will not be elaborated here). An arc-shaped pipe 96 is inclinedly provided in the acceleration section 94 through the connecting pipe 95. The arc-shaped pipe 96 extends into the hopper pump conveying pipe 11. The two sets of arc-shaped pipes 96 are arranged along... The feed pipe 31 is symmetrical about its axis. For the two sets of arc-shaped pipes 96, the axes of the arc-shaped pipes 96 and the feed pipe axis form a certain angle (15°-45°). The airflow directions of the two sets of arc-shaped pipes 96 are inclined in opposite directions (e.g., one set inclined to the lower left, the other to the lower right), rather than in the same direction. At this time, the airflow forms a tangential force rotating along the pipe wall inside the pipe, causing the material to spiral downwards along the pipe axis. This assists in feeding and increases the feeding speed. Furthermore, the rotating and scouring action of the spiral airflow along the pipe wall can peel off the material adhering to the pipe wall, allowing it to be conveyed downwards with the main flow, reducing pipe blockage and cleaning frequency. A recovery pipe 92 is inclined on one side of the exhaust pipe 13, and an electrically controlled valve 93 is installed on the recovery pipe 92. Meanwhile, for the material continuously fed into the hopper 12... The protective gas inside is also recovered through the recovery pipe 92. Depending on the actual situation, the recovered protective gas can be filtered before being sent to the compression device (air compressor) for compression. Then, it works in conjunction with the silo pump to transport the material. The electrically controlled valve 93 can be a one-way valve 22 or other valves; this is a mature technology and will not be elaborated upon here. The discharge pipe 31 is connected to the silo 12 and the silo pump conveying pipe 11 via a rotating assembly. The discharge pipe 31 has a central discharge port 32 at its bottom center and side discharge ports 33 on its circumference. The number of side discharge ports 33 can be two, three, or four sets, preferably two sets, to coordinate with airflow and the side discharge ports during material transport. 33, with the feed pipe 31 rotating on the hopper 12, discharges material from the central outlet 32 ​​and the side outlet 33, ensuring even distribution of material within the hopper 12 and preventing conical accumulation that could affect the accuracy of material level detection. The hopper 12 is equipped with a detection component for easy detection of material height. It operates when the material is at a low level, conveying material into the hopper; when it is at a high level, material conveying stops. The side outlet 33 has a cleaning mechanism matching the detection component, and the top of the hopper 12 has an auxiliary mechanism matching the hopper pump conveying pipe 11 for easy cleaning of the detection component. This prevents powdery material from forming a deposit on the sensor surface, causing signal distortion and frequent maintenance.The detection component includes a level gauge 41, which can be a laser level gauge 41 or an ultrasonic level gauge 41, located at the top inside the silo 12, to facilitate the detection of the material height within the silo 12. A tactile switch 42 is located on one side of the level gauge 41, electrically connected to it. Through the tactile switch 42 and the contact block 55 on the cleaning mechanism, when the discharge pipe 31 rotates with the side outlet 33, the contact block 55 contacts the tactile switch 42, energizing the level gauge 41 for convenient material height detection. After rotation and no longer in contact, the level gauge 41 de-energizes and enters a sleep state for energy saving, resuming detection after the next rotation. Continuous detection is not required. Furthermore, once the set height threshold is reached, a signal can be transmitted via a PLC to the silo pump to stop operation.

[0051] In this embodiment, the connecting pipe 95 and the outlet end of the acceleration section 94 are inclined at an angle of 30°-60° (the specific angle can be adjusted according to the actual airflow speed and pipe diameter). The bending radius of the arc-shaped pipe 96 is 1:3-1:5 to the inner diameter of the silo pump conveying pipe 11, and the outlet axis of the arc-shaped pipe 96 is at an angle of 15°-45° to the axis of the discharge pipe 31. More importantly, the airflow directions of the two sets of arc-shaped pipes 96 are inclined in opposite directions (i.e., the outlet of one set of arc-shaped pipes 96 is inclined to the lower left, and the other set is inclined to the lower right, rather than in the same direction). This reverse inclination design causes the two sets of airflow to form a tangential force rotating along the pipe wall in the silo pump conveying pipe 11. This tangential force is spirally coupled with the direction of material falling (i.e., the rotation direction of the tangential force is consistent with the rotation direction of the material spiraling downward), thereby driving the material to spiral downward along the pipe axis.

[0052] The connecting pipe 95 and the outlet end of the acceleration section 94 form an angle of 30°-60° (preferably 45°). This angle can balance the efficiency of changing the airflow direction and energy loss. If the angle is too small (e.g., <30°), the change in airflow direction will be insufficient and the tangential force will be weak. If the angle is too large (e.g., >60°), turbulence loss may occur due to the sharp turn of the airflow, reducing the effective kinetic energy.

[0053] The ratio of the radius of curvature (R) of the arc-shaped tube 96 to the inner diameter (D) of the pump delivery pipe 11 is 1:3-1:5 (preferably 1:4). This ratio ensures that the airflow smoothly turns within the arc-shaped tube 96, avoiding abrupt changes in airflow direction (resulting in additional pressure loss) due to excessive curvature (R / D<1:3) or insufficient tangential force (the airflow cannot rotate closely against the pipe wall) due to excessive curvature (R / D>1:5).

[0054] Through the secondary acceleration of the aforementioned acceleration section 94, the inclined connection of the connecting pipe 95, and the reverse inclined setting of the arc-shaped pipe 96, the circulating gas, when entering the silo pump conveying pipe 11, not only achieves airflow acceleration (improving conveying efficiency), but also forms a tangential force rotating along the pipe wall through the reverse inclined arc-shaped pipe 96 (the direction of this tangential force is coordinated with the direction of material spiral descent). This tangential force not only assists in the spiral feeding of materials (improving feeding speed), but more importantly, the rotating scouring effect of the spiral airflow along the pipe wall can peel off the material attached to the pipe wall and convey it downward with the mainstream, thereby significantly reducing pipe blockage and cleaning frequency.

[0055] During the conveying and feeding process, the protective gas is discharged through the exhaust pipe 13, and after being initially filtered by the filter screen 98, it enters the conical guide hole 97 for initial acceleration, and then enters the acceleration section 94 of the air guide pipe 91 for secondary acceleration. The accelerated gas is then introduced into the arc-shaped pipe 96 through the connecting pipe 95 (which is inclined to the acceleration section 94 at an angle of 30°-60°). Since the outlet axis of the arc-shaped pipe 96 is at an angle of 15°-45° to the axis of the feeding pipe 31, and the airflow directions of the two sets of arc-shaped pipes 96 are inclined in opposite directions (lower left and lower right), the gas forms a tangential force rotating along the pipe wall in the conveying pipe 11 of the silo pump. This tangential force forms a spiral coupling with the direction of material falling (i.e., the rotation direction of the tangential force is consistent with the rotation direction of the material spiraling downward), driving the material to spiral downward along the pipe axis.

[0056] In this process, the spiral airflow plays a role in two aspects: First, the rotational component of the tangential force works in conjunction with the direction of the material's gravity to form a spiral feeding trajectory, which significantly improves the feeding speed and increases feeding efficiency compared to straight airflow conveying; Second, the rotating scouring effect of the spiral airflow along the pipe wall can peel off the material attached to the pipe wall and convey it downward with the mainstream, thereby reducing the risk of pipe blockage and reducing the frequency of manual cleaning.

[0057] When conveying fine powder (particle size <50μm), reduce the angle between the connecting pipe 95 and the acceleration section 94, such as adjusting it to 30°, to enhance the rotational component (Ft) of the tangential force and prevent the fine powder from being easily carried away from the pipe wall by the mainstream due to its small mass, thus reducing pipe wall adhesion; at the same time, increase the radius of curvature of the arc-shaped pipe 96 (R / D adjusted to 1:5) to reduce the abruptness of airflow turning and prevent the fine powder from being diffused by turbulence, thus reducing dust;

[0058] When conveying heavy materials (density > 2000 kg / m³) 3 When increasing the angle of the connecting pipe by 95°, such as adjusting it to 60°, the kinetic energy loss from the sharp turn of the airflow is used to obtain a greater tangential force direction adjustment (Ft direction is closer to the pipe wall), which enhances the thrust on heavy materials; at the same time, the radius of curvature of the arc-shaped pipe by 96° is reduced (R / D is adjusted to 1:3), so that the airflow rotates closer to the pipe wall, which increases the scouring intensity of the pipe wall and makes the adhesion of heavy materials more stubborn.

[0059] Please see Figures 1-10 To ensure uniform material distribution within the silo 12 and guarantee detection accuracy, the level gauge 41 can be cleaned and wiped to prevent adhering materials from affecting the detection results. The level gauge 41 of the detection component can be controlled to start and stop based on rotation, allowing for intermittent detection. This not only saves energy but also does not affect the detection effect. The discharge pipe 31 is connected to the silo 12 and the silo pump delivery pipe 11 via a rotating assembly. The rotating assembly includes a rotating bearing 61 sleeved on the outside of the discharge pipe 31. The outer ring of the rotating bearing 61 is connected to the silo 12, or other rotating components can be used to ensure that the discharge pipe 31 rotates on the silo 12. The rotating bearing 61 is equipped with [missing information - likely related to a specific feature or feature]. The sealing ring 62 ensures a sealing effect without affecting rotation, preventing material from the hopper 12 from entering the rotating bearing 61. The rotating assembly also includes an annular groove 63 inside the hopper pump delivery pipe 11. A rotating ring 64 is rotatably mounted inside the annular groove 63. The rotating ring 64 operates on the same principle as the bearing, allowing the discharge pipe 31 to rotate within the hopper pump delivery pipe 11. A sealing device, such as the sealing ring 62, is provided between the rotating ring 64 and the annular groove 63 to ensure a sealing effect. The rotating ring 64 is fitted onto the side wall of the discharge pipe 31. The rotating collar 81 is located above the rotating bearing 61. A guide ring 65 is fixedly mounted at the top of the discharge pipe 31. The cross-sectional shape of the guide ring 65 is as follows: Figure 6 As shown, this facilitates the flow of material from the pump conveying pipe 11 into the discharge pipe 31, preventing material residue from remaining on the top of the discharge pipe 31. To facilitate cleaning of the level gauge 41 and enable intermittent detection, which is energy-efficient and does not affect the detection effect, the cleaning mechanism includes a fixed base 51 on the side discharge port 33. A support plate 52 is mounted on the fixed base 51, and a cleaning cotton 53 is mounted on the support plate 52. The cleaning cotton 53 is matched with the level gauge 41, facilitating the wiping and cleaning of the surface of the level gauge 41 and preventing material from adhering to the surface. To improve the accuracy of the detection, a connecting plate 54 is fixedly provided at the end of the pallet 52. The connecting plate 54 is provided with a contact block 55, which is matched with the tactile switch 42. When the feed pipe 31 rotates with the side discharge port 33, the contact block 55 contacts the tactile switch 42, and the level gauge 41 is powered on and in working condition, which facilitates the detection of the material height. After the rotation stops contacting, the level gauge 41 is powered off and goes into sleep mode to save energy. It will detect again after the next rotation, without the need for continuous detection.

[0060] Please see Figures 1-10To assist in material feeding, prevent material residue, and ensure the cleanliness of the inside of the silo pump conveying pipe 11 and the discharge pipe 31, a purge pipe 21 is inclinedly installed on the side wall of the silo pump conveying pipe 11. A one-way valve 22 is installed on the purge pipe 21. The purge pipe 21 can be connected to the output end of an air compressor (not shown in the diagram). After conveying, compressed air is used to purge the inside of the pipe to ensure cleanliness and prevent material residue. The one-way valve 22 ensures that compressed air enters the silo pump conveying pipe 11 through the purge pipe 21, preventing material from entering the purge pipe 21. Simultaneously, an auxiliary mechanism matching the silo pump conveying pipe 11 is provided at the top of the silo 12. The auxiliary mechanism includes a motor 71 installed on the silo 12, with a crankshaft 72 fixedly installed at the output end of the motor 71. There can be one, two, or three sets of crankshafts 72 to ensure a vibratory impact on the silo pump conveying pipe 11, assisting in material feeding and preventing material from adhering to the inner wall and causing residue. A sleeve is fitted in the middle of each set of crankshafts 72. Ring 81, preferably in a set, is fixedly connected to the top of the upper crankshaft 72 via bearing seat 73 to the side wall of the silo pump delivery pipe 11. The auxiliary mechanism also includes a collar 81 sleeved in the middle of the crankshaft 72. The side wall of the collar 81 is connected to a striking block 83 via a rotating member 82. The rotating member 82 can be composed of a connecting rod and a rotating block, so that when the crankshaft 72 rotates, the collar 81 and the rotating member 82 can slide back and forth in the slide groove 85 with the striking block 83. The side wall of the silo pump delivery pipe 11 is provided with The sleeve 84 has a groove 85 inside. The striking block 83 slides in the groove 85, allowing the striking block 83 to reciprocate within the groove 85 to vibrate and strike the silo pump delivery pipe 11, assisting in material feeding and preventing material residue. A rubber pad 86 is fixedly installed inside the groove 85 near one end of the silo pump delivery pipe 11. The rubber pad 86 matches the striking block 83 to avoid hard contact with the silo pump delivery pipe 11, thus preventing the striking block 83 from damaging the silo pump delivery pipe 11.

[0061] Working principle: The material is conveyed by a silo pump in conjunction with an air compressor and a silo pump delivery pipe 11. The kinetic energy of the compressed air propels the powdered material to flow in the silo pump delivery pipe 11. Under the action of the guide ring 65, the material enters the discharge pipe 31 and is then ejected through the central discharge port 32 and the side discharge port 33. Since the side discharge port 33 is inclined, the direction of its ejected airflow has a circumferential tangential component, that is, a component perpendicular to the central axis of the discharge pipe 31. According to the law of conservation of momentum, the airflow exerts a reverse circumferential thrust on the inner wall of the side discharge port 33. This thrust generates a rotational torque on the central axis of the discharge pipe 31, driving the discharge pipe 31 to rotate around the central axis of the silo 12 in conjunction with the rotating bearing 61. At the same time, the rotating ring 64 rotates within the annular groove 63. The material is evenly distributed inside the hopper 12 through the central discharge port 32 and the side discharge port 33, preventing the material from being pushed at the discharge point by the traditional central or side discharge pipe 31, which would affect the accuracy of material height detection in the hopper 12. During the rotation of the side discharge port 33, the fixed base 51 moves and rotates, and the cleaning cotton 53 on the pallet 52 contacts the level gauge 41 to clean the surface and prevent any adhering material. Then, the contact block 55 on the connecting plate 54 continues to rotate and contacts the tactile switch 42, energizing the level gauge 41 for easy material height detection. After the rotation stops, the level gauge 41 de-energizes and enters a sleep state for energy saving. This allows for intermittent detection of material height in the hopper 12, eliminating the need for continuous detection during the conveying and discharging process. The protective gas is discharged through the exhaust pipe, initially filtered by the filter screen, and then initially accelerated by the conical guide tube 97. The gas is further accelerated by the acceleration section 94 and blown out through the connecting pipe 95 and the arc-shaped pipe 96. Flowing inside the pipe, it forms a tangential force rotating along the pipe wall, driving the material to spiral downwards along the pipe axis. This assists in feeding and increases the feeding speed. Furthermore, the rotating and scouring action of the spiral airflow along the pipe wall can peel off material adhering to the pipe wall, allowing it to be conveyed downwards with the main flow, reducing pipe blockage and cleaning frequency. Part of the gas is discharged through the recovery pipe 92, processed, and then re-compressed for reuse, facilitating subsequent material conveying with the silo pump. When the set height threshold is reached, a signal can be transmitted via PLC, etc. The material is conveyed until the silo pump stops working. During the conveying process, the motor 71 operates, driving the crankshaft 72 to rotate on the bearing seat 73. In conjunction with the collar 81 and rotating component 82, the striking block 83 moves back and forth within the chute 85. Together with the rubber pad 86, it vibrates and strikes the silo pump conveying pipe 11, assisting in material feeding. After conveying is complete, the blowpipe 21 cleans the inner walls of the silo pump conveying pipe 11 and the discharge pipe 31 to prevent material residue. When it is necessary to detect the material height in the silo 12, compressed air is introduced through the blowpipe 21 and ejected from the central discharge port 32 and the side discharge port 33, driving the discharge pipe 31 to rotate. Repeating the above operation activates the contact block 55 and the tactile switch 42, powering on the level gauge 41 for convenient material height detection.When the set low threshold is reached, the silo pump works in conjunction with the air compressor to continue conveying materials through the silo pump delivery pipe 11.

[0062] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. It should not be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A silo pump level energy-saving detection and control device, comprising a silo pump conveying pipe (11), the silo pump conveying pipe (11) being connected to a material silo (12) via a discharge pipe (31), the material silo (12) being provided with an exhaust pipe (13), characterized in that: The feeding pipe (31) is connected to the hopper (12) and the hopper pump conveying pipe (11) by a rotating assembly. The feeding pipe (31) has a central discharge port (32) at the bottom center and an inclined side discharge port (33) on the periphery of the feeding pipe (31). The hopper (12) is equipped with a detection assembly inside and a cleaning mechanism matching the detection assembly is provided on the side discharge port (33). The hopper (12) is equipped with an auxiliary mechanism matching the hopper pump conveying pipe (11) at the top. The exhaust pipe 13 is equipped with a gas recovery and utilization mechanism for recycling the compressed gas from the pneumatic conveying. The cleaning mechanism includes a fixed seat (51) set on the side discharge port (33), a tray (52) set on the fixed seat (51), a cleaning cotton (53) set on the tray (52), the cleaning cotton (53) matching the level gauge (41), a connecting plate (54) fixedly set at the end of the tray (52), a contact block (55) set on the connecting plate (54), and the contact block (55) matching the tactile switch (42); The auxiliary mechanism includes a motor (71) installed on the hopper (12), a crankshaft (72) fixedly installed at the output end of the motor (71), and the top end of the crankshaft (72) fixedly connected to the side wall of the hopper pump delivery pipe (11) through a bearing seat (73). The auxiliary mechanism also includes a collar (81) sleeved in the middle of the crankshaft (72), and a striking block (83) connected to the side wall of the collar (81) through a rotating part (82). A sleeve (84) is provided on the side wall of the hopper pump delivery pipe (11), and a sliding groove (85) is provided inside the sleeve (84). The striking block (83) slides with the sliding groove (85). A rubber pad (86) is fixedly installed at one end of the sliding groove (85) near the hopper pump delivery pipe (11), and the rubber pad (86) matches the striking block (83).

2. The energy-saving detection and control device for silo pump material level according to claim 1, characterized in that: The rotating assembly includes a rotating bearing (61) sleeved on the outside of the feed pipe (31). The outer ring of the rotating bearing (61) is connected to the hopper (12), and the top and bottom of the rotating bearing (61) are provided with sealing rings (62).

3. The energy-saving detection and control device for silo pump material level according to claim 2, characterized in that: The rotating assembly also includes an annular groove (63) opened inside the silo pump delivery pipe (11), and a rotating ring (64) is rotatably provided inside the annular groove (63). The rotating ring (64) is sleeved on the side wall of the feed pipe (31), and the rotating collar (81) is located above the rotating bearing (61). A guide ring (65) is fixedly provided at the top end of the feed pipe (31).

4. The energy-saving detection and control device for silo pump material level according to claim 3, characterized in that: A purge pipe (21) is inclinedly provided on the side wall of the pump delivery pipe (11), and a one-way valve (22) is provided on the purge pipe (21).

5. The energy-saving detection and control device for silo pump material level according to claim 4, characterized in that: The detection component includes a level gauge (41) located at the top of the inside of the silo (12). A tactile switch (42) is provided on one side of the level gauge (41), and the tactile switch (42) is electrically connected to the level gauge (41).

6. The energy-saving detection and control device for silo pump material level according to claim 5, characterized in that: The gas recovery and utilization mechanism includes a conical guide hole (97) at the bottom of the exhaust pipe (13), a filter screen (98) at the bottom of the conical guide hole (97), a gas guide pipe (91) at the top of the exhaust pipe (13), an acceleration section (94) on the gas guide pipe (91), an arc-shaped pipe (96) at an incline through a connecting pipe (95) on the acceleration section (94), the arc-shaped pipe (96) extending into the inside of the silo pump conveying pipe (11), the two sets of arc-shaped pipes (96) being symmetrical about the axis of the feed pipe (31), a recovery pipe (92) at an incline on one side of the exhaust pipe (13), and an electric control valve (93) on the recovery pipe (92).

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