A diameter-adjustable feedback electromagnetic shock tube device

Abstract

The present application relates to the technical fields of electromagnetic tube shaker, in particular to a diameter-adjustable feedback electromagnetic tube shaker; comprising a vibrator and a mounting assembly; the vibrator comprises a vibration shell, a coil base, a metal plate, a first slider, a copper coil and a vibration spring; two coil bases are located on the two sides of the metal plate, and the side close to each other is provided with a copper wire groove and a first sliding groove; the copper wire groove is embedded in the copper coil; the first sliding groove is connected with the first slider through sliding; the present application can realize the reciprocating motion of the metal plate by alternatingly electrifying the upper and lower copper coils; the two ends of the metal plate are provided with the vibration spring, the vibration spring can store energy when being compressed, and can produce transverse vibration when being released, so as to achieve the effect of tube vibration; due to the inertia effect, the particles blocked in the tube or the particles with blocking tendency can be scattered, so as to achieve the effect of pipe dredging and improve the conveying efficiency.

Description

Technical Field

[0001] This invention relates to the field of electromagnetic vibrator technology, specifically to a diameter-adjustable feedback electromagnetic vibrator. Background Technology

[0002] Coal is my country's primary energy source. However, coal mining generates a large amount of coal gangue. Because the amount of coal gangue utilized is less than the amount generated, new coal gangue is stockpiled every year. As of 2024, my country's coal gangue production reached 825 million tons, an increase of 2.1% year-on-year, and the cumulative stockpile has exceeded 7 billion tons.

[0003] Mine mining, beneficiation, and backfilling mainly involve coal mining, the separation of raw coal and gangue, and the subsequent crushing, drying, and backfilling of the separated gangue. For gangue backfilling, the gangue generated during rock tunnel excavation is directly transported underground, crushed, and then transported to the backfilling tunnel face by a feeder and belt conveyor. However, with the increasing mechanization of mining, the volume of gangue is growing larger, and the complex transportation process, low efficiency, environmental pollution, and high treatment costs are severely restricting mine development. Pneumatic conveying is a modern transportation method that utilizes the flowing energy of air (or other gases) to transport powdery, granular, or small lump materials from one location to another through pipelines. It is particularly suitable for transporting large quantities of materials over long distances and through complex paths. Therefore, using pneumatic conveying for gangue backfilling is a superior solution.

[0004] Currently, pneumatic conveying is widely used in industries such as chemical, food, pharmaceutical, metallurgy, and building materials due to its advantages such as strong environmental friendliness, low pollution, flexible conveying, high efficiency, and space saving. However, for long-distance pneumatic conveying underground, the properties of the conveyed materials and the complexity of the operating conditions often present the following problems: 1. Pipe Blockage Issues in Long-Distance Pneumatic Conveying Systems: Low-speed dense-phase pneumatic conveying is commonly used in long-distance pneumatic conveying systems. This method offers high conveying efficiency, low wear, and a low material breakage rate. However, due to the low speed, the contact area between the material and the pipe wall is large, increasing friction between the material and the pipe wall. Under frictional resistance, the material settles downwards. Therefore, pipe blockage is prone to occur, reducing conveying efficiency.

[0005] 2. Dust adhesion problem on pipe wall: During pneumatic conveying, due to the physical properties of the conveyed material (excessive proportion of fine powder, strong hygroscopicity, large surface roughness) and its chemical properties (electrostatic effect), dust will adhere to the inner wall of the conveying pipe, reducing the effective conveying cross-sectional area of ​​the pipe, increasing the conveying resistance, and causing material deposition and blockage.

[0006] 3. The conveying pressure in existing pipelines changes with the condition of the conveyed materials, and existing vibrators cannot selectively vibrate according to the blockage in the pipeline. Long-term vibration will affect the strength and structure of the pipeline and cause energy waste.

[0007] 4. Existing vibrators are difficult to adapt to pipes of different diameters, resulting in poor applicability. Summary of the Invention

[0008] To overcome the shortcomings of existing technologies, this invention proposes a diameter-adjustable feedback electromagnetic vibrator. This invention achieves the reciprocating motion of a metal plate by alternately energizing two copper coils, one above the other. Since the two ends of the metal plate are equipped with vibration springs, the vibration springs store energy when compressed and generate lateral vibration when released, thus achieving the effect of vibrating the tube. Furthermore, due to inertia, particles that are blocked or tend to block the tube can be dispersed, thereby achieving the effect of clearing the tube and improving the conveying efficiency.

[0009] The technical solution adopted by this invention to solve its technical problem is as follows: An adjustable-diameter feedback electromagnetic vibrator, comprising a vibrator and an installation assembly; the vibrator includes a vibrating shell, coil bases, a metal plate, a first slider, a copper coil, and a vibrating spring; two coil bases are located on both sides of the metal plate, with copper wire grooves and a first sliding groove provided on one side close to each other; the copper wire grooves embed the copper coils; the first slider is slidably connected within the first sliding groove; the first slider is fixedly connected to the metal plate; the coil bases are made of stacked silicon steel sheets; the metal plate is an aluminum block used to cut magnetic field lines, with vibrating springs installed at both ends; the other end of the vibrating spring abuts against the inner wall of the vibrating shell; the vibrating shell is composed of an upper shell and a lower shell that overlap each other; the coil bases, the metal plate, and the vibrating springs are located inside the vibrating shell; the vibrating shell is placed inside the installation assembly; a sensor communicating with the inside of the pipe is provided on the outer wall of the pipe; the sensor is used to monitor the pressure signal inside the pipe in real time, forming a closed-loop feedback control with the vibrator, automatically adjusting the current input to the copper coil according to the pressure signal to control the vibration frequency.

[0010] Preferably, the mounting assembly includes an arc-shaped sliding plate and a fixing plate; one end of each of the two fixing plates is fixedly connected to a mounting ear; the mounting ear passes through and is connected to a mounting bolt; the other end of each of the two fixing plates is provided with a second sliding groove; the sliding plate is slidably connected in the second sliding groove; the ends of the two sliding plates away from the fixing plates are hinged to each other; a rubber plate is adhered to the inner wall of the fixing plate; a vibrator is embedded in the rubber plate.

[0011] Preferably, the mounting assembly includes multiple arc-shaped plates; two extension plates are circumferentially connected to each arc-shaped plate; the vibrator is embedded in the inner surface of the arc-shaped plate and is covered with a rubber pad; a first connecting rod is fixedly connected to one of the extension plates on the single arc-shaped plate at a forward position away from the arc-shaped plate; an insertion hole is provided at the rear end of the first connecting rod; a second connecting rod is fixedly connected to the other extension plate on the single arc-shaped plate at a rear position away from the arc-shaped plate; a movable hole is provided at the forward end of the second connecting rod; an insertion rod is movably connected in the movable hole; the insertion rod is connected to the bottom of the movable hole through a first spring; a groove is provided through the arc-shaped inner wall of the movable hole facing outward; a slidable block is connected in the groove; the slidable block is fixedly connected to the arc-shaped outer wall of the insertion rod.

[0012] Preferably, the end of the insertion rod away from the first spring is provided with a guide angle; the arc-shaped outer wall of the insertion rod is provided with an annular groove; the arc-shaped inner wall of the insertion hole is provided with a groove aligned with the groove; a locking block is slidably connected in the groove; the locking block and the bottom of the groove are connected by a second spring; the bottom of the groove is provided with a pull groove facing outward; an L-shaped pull block is slidably connected in the pull groove; the pull block and the locking block are fixedly connected.

[0013] Preferably, the outer wall of the arc-shaped plate in the circumferential direction is provided with an extension groove; the extension plate is slidably connected in the extension groove; the extension plate and the bottom of the extension groove are connected by a tension spring.

[0014] Preferably, the arc-shaped plate has a pressure relief groove inside; a first pressure relief hole is provided through one end of the pressure relief groove near the outer wall of the arc-shaped plate; a first pressure relief rod moves within the first pressure relief hole; the other end of the pressure relief groove is connected to the bottom of two extension grooves through a second pressure relief hole; the extension plate is slidably sealed to the extension groove; a pressure relief ball is abutted by a pressure relief spring at the position where the pressure relief groove connects to the first pressure relief hole; the first pressure relief rod is fixedly connected to the pressure relief ball.

[0015] Preferably, a first circular groove is provided inside the first connecting rod and near the insertion hole; one end of the first circular groove is connected to the bottom of the insertion hole through a first circular hole; the other end of the first circular groove is connected to the end of the extension plate near the extension groove through a first connecting hole; the position where the first circular groove and the first circular hole are connected is abutted against the first ball by a first circular spring; the outer wall of the first ball is fixedly connected to the first circular rod; the first circular rod passes through the first circular hole. The insertion rod is in a movably sealed fit with the insertion hole; the insertion rod is in a movably sealed connection with the movable hole; a second circular groove is provided inside the insertion rod; a second circular hole is provided through the second circular groove at the end away from the first spring; the other end of the second circular groove is connected to the end of the extension plate near the extension groove through a second connecting hole; the position where the second circular hole and the second circular groove are connected is abutted against the second sphere by a second circular spring; a second circular rod that can pass through the second circular hole is fixed to the outer wall of the second sphere; the first circular rod and the second circular rod can contact each other; the first circular spring and the second circular spring have the same elastic force.

[0016] Preferably, the inner surface of the arc-shaped plate is provided with a placement groove; the vibration shell is placed in the placement groove; the groove wall of the placement groove extends outward and is threadedly connected to the placement bolt; the outer wall of the vibration shell is provided with a threaded hole aligned with the placement bolt; the placement bolt is threadedly engaged with the threaded hole.

[0017] The beneficial effects of this invention are as follows: 1. This invention achieves the reciprocating motion of a metal plate by alternately energizing two copper coils, one above the other. Since the two ends of the metal plate are equipped with vibration springs, the vibration springs store energy when compressed and generate lateral vibration when released, thus achieving the effect of vibrating the tube. Furthermore, due to inertia, particles that are blocked or tend to block the tube can be dispersed, thereby achieving the effect of clearing the tube and improving the conveying efficiency.

[0018] 2. This invention allows for the selection of a corresponding number of arc-shaped plates for connection based on the outer diameter of the pipe, thereby enabling the vibrator to be used for installations of more diameters and expanding its application range.

[0019] 3. After the last two arc-shaped plates are connected, a ring is formed. Then, the multiple arc-shaped plates in the ring are released, and the extension plates will retract into the extension groove under the pull of their respective tension springs, thereby tightening the multiple arc-shaped plates in the ring. This allows the size of the multiple arc-shaped plates in the ring to be adjusted to adapt to the outer wall of the pipe. After the multiple arc-shaped plates in the ring are tightened, they fit better against the outer wall of the pipe, thus ensuring the vibration effect of the vibrator on the pipe. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a flowchart of the closed-loop control of the vibrator of the present invention; Figure 2 This is a schematic diagram of the overall installation of the present invention; Figure 3 This is a perspective view of one embodiment of the mounting component of the present invention; Figure 4 yes Figure 3 A 3D view of the components before diameter adjustment during installation; Figure 5 yes Figure 3 A 3D view of the components after diameter adjustment. Figure 6 This is a structural diagram of the vibrator of the present invention; Figure 7 This is a perspective view of another embodiment of the mounting component of the present invention; Figure 8 yes Figure 7 Enlarged view of point A in the middle; Figure 9 yes Figure 7 Enlarged view of point B in the middle; Figure 10 yes Figure 7 A stereoscopic view from another angle; Figure 11 This is a diagram showing the location of the pressure relief groove in this invention; Figure 12 yes Figure 11 Enlarged view of point C in the middle; Figure 13 This is a schematic diagram of the cooperation between the extension groove and the extension plate of the present invention; Figure 14 This is a schematic diagram of the cooperation between the first connecting rod and the second connecting rod in this invention.

[0022] In the diagram: Vibrator 1, Vibration housing 11, Upper housing 111, Lower housing 112, Coil base 12, Copper wire groove 121, First slide groove 122, Metal plate 14, First slider 15, Copper coil 16, Vibration spring 17, Rubber pad 18, Threaded hole 19, Sensor 2, Slide plate 3, Fixing plate 31, Mounting ear 32, Mounting bolt 33, Second slide groove 34, Rubber plate 35, Arc plate 4, Extension groove 41, Tension spring 42, Pressure relief groove 43, First pressure relief hole 44, First pressure relief rod 45, Second pressure relief hole 46, Pressure relief spring 47, Pressure relief ball 48, Placement groove 49. Extension plate 5, First connecting rod 6, Insertion hole 61, Groove 62, Locking block 63, Second spring 64, Pull groove 65, Pulling block 66, First circular groove 67, First circular hole 671, First connecting hole 672, First circular spring 673, First sphere 674, First circular rod 675, Second connecting rod 7, Movable hole 71, Dial groove 72, Dial block 73, Insertion rod 8, First spring 81, Guide angle 82, Locking groove 83, Second circular groove 84, Second circular hole 85, Second connecting hole 86, Second circular spring 87, Second sphere 88, Second circular rod 89, Placement bolt 9. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] like Figures 1 to 14 As shown, the present invention includes the following embodiments: Example 1: A diameter-adjustable feedback electromagnetic vibrator includes a vibrator 1 and a mounting assembly; the vibrator 1 includes a vibrating shell 11, a coil base 12, a metal plate 14, a first slider 15, a copper coil 16, and a vibrating spring 17; two coil bases 12 are located on both sides of the metal plate 14, and copper wire grooves 121 and first sliding grooves 122 are provided on their adjacent sides; the copper wire grooves 121 are embedded in the copper coil 16; the first slider 15 is slidably connected in the first sliding groove 122; the first slider 15 is fixedly connected to the metal plate 14; the coil base 12 is made of stacked silicon steel sheets; the metal plate Block 14 is an aluminum block used for cutting magnetic field lines, with vibration springs 17 installed at both ends; the other end of the vibration spring 17 abuts against the inner wall of the vibration shell 11; the vibration shell 11 is composed of an upper shell 111 and a lower shell 112 that overlap each other; the coil base 12, the metal plate 14, and the vibration spring 17 are located inside the vibration shell 11; the vibration shell 11 is placed inside the mounting assembly; a sensor 2 communicating with the inside of the pipe is provided on the outer wall of the pipe; the sensor 2 is used to monitor the pressure signal inside the pipe in real time, forming a closed-loop feedback control with the vibrator 1, and automatically adjusting the current of the input copper coil 16 according to the pressure signal to control the vibration frequency.

[0025] First, the vibrator 1 is mounted on the outer wall of the pipe using the mounting components. Then, the sensor 2 is also mounted on the outer wall of the pipe in the direction of transport. The power is turned on and the pipe transport is started. Since this invention is based on the principle of electromagnetic induction, when an alternating current is applied to the copper coil 16, a linear traveling wave magnetic field is generated. The traveling wave magnetic field cuts the metal plate to generate induced eddy currents. The eddy currents interact with the traveling wave magnetic field to generate electromagnetic force, which pushes the metal plate 14 to move in a straight line. When the direction of the current is changed, the direction of motion is changed. This invention is designed with two coil bases 12, one above the other. When the copper coil 16 in the upper coil base 12 is energized, the metal plate 14 moves horizontally. When the copper coil 16 in the lower coil base 12 is energized, the metal plate 14 can move in the opposite direction. By alternately energizing the two copper coils 16, the reciprocating motion of the metal plate 14 can be achieved. Since vibration springs 17 are installed at both ends of the metal plate 14, the vibration springs 17 store energy when compressed and generate lateral vibration when released. This achieves the effect of vibrating the pipe; due to inertia, it can disperse particles that are blocking the pipe or have a tendency to block it, thereby achieving the effect of clearing the pipe and improving the conveying efficiency; due to the different properties of particles, some transported particles will adhere to the pipe wall due to hygroscopicity, adhesion, or static electricity, which will reduce the effective conveying cross-sectional area of ​​the pipe and increase the resistance during conveying; in order to address this, the present invention can use the method of vibrating the pipe to make the dust particles adhering to the pipe wall fall off and be discharged from the pipe with the airflow, reducing dust adhesion and effectively improving the stability of conveying; the present invention achieves closed-loop feedback control through cooperation with sensor 2. By changing the pressure signal output by sensor 2 in real time, the current of the input copper coil 16 is automatically adjusted, thereby controlling the frequency of the linear motion of the metal plate 14, and then vibrating the pipe when it is necessary to clear the pipe, which reduces energy loss and avoids pipe damage caused by prolonged vibration, that is, vibration is only performed when needed.

[0026] Example 2: The mounting assembly includes an arc-shaped sliding plate 3 and a fixing plate 31; one end of each of the two fixing plates 31 is fixedly connected to a mounting ear 32; the mounting ear 32 passes through and is connected to a mounting bolt 33; the other end of each of the two fixing plates 31 is provided with a second sliding groove 34; the sliding plate 3 is slidably connected in the second sliding groove 34; the ends of the two sliding plates 3 away from the fixing plate 31 are hinged to each other; a rubber plate 35 is adhered to the inner wall of the fixing plate 31; a vibrator 1 is embedded in the rubber plate 35.

[0027] The slide plate 3 can slide along the second slide groove 34 at the other end of the fixed plate 31. The two slide plates 3 are hinged to each other at the ends away from the fixed plate 31, so that after the mounting bolt 33 is tightened, it can be adjusted within a certain circumference range, thus adapting to pipes of different specifications and sizes and improving installation flexibility; the minimum adjustable diameter is 120mm and the maximum diameter is 200mm.

[0028] Example 3: The installation assembly includes multiple arc-shaped plates 4; two extension plates 5 are connected to each arc-shaped plate 4 circumferentially; the vibrator 1 is embedded in the inner surface of the arc-shaped plate 4 and is covered with a rubber pad 18; one of the extension plates 5 on the single arc-shaped plate 4 is fixedly connected to a first connecting rod 6 at a forward position away from the arc-shaped plate 4; a insertion hole 61 is provided at the rear end of the first connecting rod 6; another extension plate 5 on the single arc-shaped plate 4 is fixedly connected to a second connecting rod 7 at a rear position away from the arc-shaped plate 4; a movable hole 71 is provided at the forward end of the second connecting rod 7; an insertion rod 8 is movably connected in the movable hole 71; the insertion rod 8 is connected to the bottom of the movable hole 71 through a first spring 81; a groove 72 is provided through the arc-shaped inner wall of the movable hole 71 facing outward; a slidable block 73 is slidably connected in the groove 72; the slidable block 73 is fixedly connected to the arc-shaped outer wall of the insertion rod 8.

[0029] Before installing the vibrator on the curved outer wall of the pipe, first determine the outer diameter of the pipe, and select the corresponding number of curved plates 4 according to the outer diameter. After determining the number of curved plates 4, and reserving one interface, splice adjacent curved plates 4. The first connecting rod 6 on one curved plate 4 is connected to the second connecting rod 7 on another curved plate 4. After the insertion hole 61 of the first connecting rod 6 is aligned with the movable hole 71 of the second connecting rod 7, control the protruding insertion rod 8 on the second connecting rod 7 to be inserted into the corresponding insertion hole 61 on the first connecting rod 6, thus achieving... The connection of adjacent arc plates 4: After connecting multiple arc plates 4 and reserving an interface, multiple arc plates 4 forming a strip are surrounded on the arc-shaped outer wall of the pipe to be vibrated. Then, the last two arc plates 4 are controlled to move closer to each other, and the first connecting rod 6 and the second connecting rod 7 on the last two arc plates 4 move closer to each other. The lever 73 on the second connecting rod 7, which is about to be docked, is moved. After being moved, the lever 73 will slide along the lever groove 72. Since the length direction of the lever groove 72 is consistent with the axial direction of the second connecting rod 7, the lever 73 will slide along the lever groove 72 after being moved. After the movement, the insert rod 8 will slide along the movable hole 71. After being moved, the insert rod 8 will overcome the elastic force of the first spring 81 and retract into the movable hole 71, so that the first connecting rod 6 and the second connecting rod 7 on the last two arc plates 4 can be smoothly aligned. When the lever 73 is released, the first spring 81 will push the insert rod 8 into the aligned insertion hole 61, realizing the connection of the last two arc plates 4. Multiple arc plates 4 form a complete ring, realizing the covering of the pipe and completing the installation process of the vibrator. The vibrator 1 inside the arc plate 4 starts to realize Vibration of the pipe; when it is necessary to remove the installation components from the outer wall of the pipe, simply move one of the levers 73 to retract the insert 8 into the movable hole 71, so that one of the first connecting rods 6 and the second connecting rod 7 can be disconnected, thereby disconnecting the two adjacent arc plates 4; this embodiment can select the corresponding number of arc plates 4 for connection according to the outer diameter of the pipe, so that the vibrator can be used for installation of more diameters, expanding the application range of the vibrator; the rubber pad 18 in this embodiment serves as an anti-slip device.

[0030] Example 4: The insertion rod 8 has a guide angle 82 at the end away from the first spring 81; the outer arc of the insertion rod 8 has an annular groove 83; the inner arc of the insertion hole 61 has a groove 62 aligned with the groove 83; a locking block 63 is slidably connected in the groove 62; the locking block 63 is connected to the bottom of the groove 62 by a second spring 64; the bottom of the groove 62 has a pull groove 65 facing outward; an L-shaped pull block 66 is slidably connected in the pull groove 65; the pull block 66 is fixedly connected to the locking block 63.

[0031] During the insertion of the plug 8 into the socket 61, the guide angle 82 at the end of the plug 8 away from the first spring 81 will press against the locking block 63, causing the locking block 63 to retract into the groove 62 under pressure to avoid the first spring 81. As the locking block 63 approaches the bottom of the groove 62, it will drive the pull block 66 to move outward along the pull groove 65. After the groove 62 and the locking slot 83 are aligned, the locking block 63 extends out of the groove 62 and enters the locking slot 83 under the action of the second spring 64. After the locking block 63 is engaged in the locking slot 83, it achieves axial locking of the plug 8 and the socket 61, so that the plug 8 cannot be disengaged from the socket 61, thereby improving the connection stability of the first connecting rod 6 and the second connecting rod 7. Since the slot 83 is annular, the locking block 63 can move circumferentially along the slot 83, allowing the insertion rod 8 to rotate within the insertion hole 61 without affecting the rotation of the first connecting rod 6 and the second connecting rod 7. This satisfies the need to adjust the included angle between adjacent arc plates 4, making it more suitable for the outer wall of the pipe. When it is necessary to pull the insertion rod 8 out of the insertion hole 61, the pulling block 66 needs to be pulled to slide along the pulling groove 65. The pulling block 66 will drive the locking block 63 to retract into the groove 62 against the second spring 64. The locking block 63 will move out of the slot 83, realizing the axial unlocking of the insertion rod 8 and the insertion hole 61, so that the insertion rod 8 can be moved out of the insertion hole 61.

[0032] Example 5: The outer wall of the arc plate 4 is provided with an extension groove 41 in the circumferential direction; the extension plate 5 is slidably connected in the extension groove 41; the extension plate 5 and the bottom of the extension groove 41 are connected by a tension spring 42.

[0033] After connecting multiple arc-shaped plates 4 into a strip and reserving an interface, the strip of arc-shaped plates 4 is surrounded on the outer wall of the pipe. Then, the strip of arc-shaped plates 4 is pulled, causing the extension plate 5 to slide against the corresponding extension groove 41. The extension plate 5 overcomes the tension spring 42 and moves away from the bottom of the extension groove 41, thereby increasing the total length of the strip of arc-shaped plates 4. This allows the insertion hole 61 on the first connecting rod 6 to better align with the movable hole 71, facilitating the docking of the interface. After connecting the last two arc-shaped plates 4, a ring is formed. Then, the ring of arc-shaped plates 4 is released, and the extension plate 5 retracts into the extension groove 41 under the pull of its respective tension spring 42, thereby tightening the ring of arc-shaped plates 4. This allows the size of the ring of arc-shaped plates 4 to be adjusted to adapt to the outer wall of the pipe. After the ring of arc-shaped plates 4 is tightened, it fits the outer wall of the pipe better, thus ensuring the vibration effect of the vibrator 1 on the pipe.

[0034] Example 6: The arc-shaped plate 4 is provided with a pressure relief groove 43 inside; a first pressure relief hole 44 is provided through one end of the pressure relief groove 43 near the outer wall of the arc-shaped plate 4; a first pressure relief rod 45 is movable in the first pressure relief hole 44; the other end of the pressure relief groove 43 is connected to the bottom of two extension grooves 41 through a second pressure relief hole 46; the extension plate 5 is slidably sealed to the extension groove 41; the pressure relief groove 43 and the first pressure relief hole 44 are connected by a pressure relief spring 47 abutting against a pressure relief ball 48; the first pressure relief rod 45 is fixedly connected to the pressure relief ball 48.

[0035] Before the multiple arc-shaped strip plates 4 are finally connected into a ring, the multiple arc-shaped strip plates 4 are pulled. After the extension plate 5 is pulled, it will overcome the tension of the tension spring 42 and move away from the bottom of the extension groove 41. The extension plate 5 will be gradually pulled out of the extension groove 41. As the extension plate 5 moves away from the extension groove 41, the internal space of the extension groove 41 will expand, forming a negative pressure. External gas will enter through the first pressure relief hole 44. The external gas will push open the pressure relief ball 48, causing the first pressure relief hole 44 to open. The gas flows along the first pressure relief hole 44 into the pressure relief groove 43, and finally along the second pressure relief hole 46 into the extension groove 41. After the multiple arc-shaped strip plates 4 are pulled and extended to their limit positions, the pulling of the multiple arc-shaped strip plates 4 is released. The pressure relief spring 47 will push the pressure relief ball 48 against the position where the first pressure relief hole 44 and the pressure relief groove 43 are connected, so that the first pressure relief hole 44 is closed. In this way, the gas in the extension groove 41 cannot be discharged along the first pressure relief hole 44, thus preventing the extension plate 5 from... As the tension spring 42 pulls back into the extension groove 41, the extension plate 5 remains in the unfolded state, and the multiple arc-shaped strip plates 4 remain in the extended state. This allows for the final connection of the joint without constantly pulling the multiple arc-shaped strip plates 4, facilitating operation and installation. After the multiple arc-shaped strip plates 4 are connected at the final interface, they form a ring. Then, pressing the multiple first pressure relief rods 45 causes the first pressure relief rods 45 to overcome the pressure relief spring 47 and push the pressure relief ball 48 away, thus relieving the first pressure. When hole 44 is opened, tension spring 42 pulls extension plate 5 back into extension groove 41. Gas in extension groove 41 flows out along second pressure relief hole 46, pressure relief groove 43 and first pressure relief hole 44. Multiple first pressure relief rods 45 are pressed down, achieving tightening of multiple annular arc plates 4. After removing multiple annular arc plates 4, pull multiple annular arc plates 4 to expand outward, so that multiple arc plates 4 are in an expanded and relaxed state, which facilitates the disassembly of first connecting rod 6 and second connecting rod 7.

[0036] Example 7: A first circular groove 67 is provided inside the first connecting rod 6 near the insertion hole 61; one end of the first circular groove 67 is connected to the bottom of the insertion hole 61 through a first circular hole 671; the other end of the first circular groove 67 is connected to the end of the extension plate 5 near the extension groove 41 through a first connecting hole 672; the position where the first circular groove 67 and the first circular hole 671 are connected is abutted against by a first circular spring 673 against a first sphere 674; the outer wall of the first sphere 674 is fixedly connected to a first circular rod 675; the first circular rod 675 passes through the first circular hole 671; The insertion rod 8 is movably and sealingly fitted with the insertion hole 61; the insertion rod 8 is movably and sealingly connected with the movable hole 71; a second circular groove 84 is provided inside the insertion rod 8; a second circular hole 85 is provided through the second circular groove 84 at the end away from the first spring 81; the other end of the second circular groove 84 is connected to the end of the extension plate 5 near the extension groove 41 through the second connecting hole 86; the position where the second circular hole 85 and the second circular groove 84 are connected is abutted against the second ball 88 by the second circular spring 87; a second circular rod 89 that can pass through the second circular hole 85 is fixedly connected to the outer wall of the second ball 88; the first circular rod 675 and the second circular rod 89 can contact each other; the first circular spring 673 and the second circular spring 87 have the same elastic force.

[0037] First, multiple arc-shaped plates 4 are connected into a strip. After the insertion rod 8 is inserted into the insertion hole 61, the second round rod 89 on the insertion rod 8 will contact the first round rod 675 inside the insertion hole 61. The first round rod 675 and the second round rod 89 press against each other, thereby removing the first ball 674 from the position where the first round groove 67 and the first round hole 671 are connected, thus opening the first round hole 671. It also removes the second ball 88 from the position where the second round groove 84 and the second round hole 85 are connected, thus opening the second round hole 85. In this way, after the first connecting rod 6 and the second connecting rod 7 are connected, the extension grooves 41 in two adjacent arc-shaped plates 4 are connected in sequence through the first connecting hole 672, the first round groove 67, the first round hole 671, the insertion hole 61, the second round hole 85, the second round groove 84, and the second connecting hole 86. After multiple arc-shaped plates 4 are connected into a strip, all the extension grooves 41 are connected. However, since the first connecting rod 6 and the second connecting rod 7 at the interface position are not aligned, the two... When the corresponding first round rod 675 and second round rod 89 are not in contact with each other, the first round spring 673 presses the first round ball 674 against the position where the first round groove 67 and the first round hole 671 are connected, and the second round spring 87 presses the second round ball 88 against the position where the second round groove 84 and the second round hole 85 are connected, so that the first round hole 671 and the second round hole 85 at the interface position are sealed in one direction. Then, the multiple arc-shaped plates 4 are pulled to unfold, and the outside gas enters the multiple extension grooves 41 along the first pressure relief hole 44. The pulling of the multiple arc-shaped plates 4 is stopped, and the multiple arc-shaped plates 4 are finally connected at the interface. In this way, all extension grooves 41 are connected. Finally, pressing any one of the first pressure relief rods 45 will drive the pressure relief ball 48 to open the first pressure relief hole 44, so that the gas in all extension grooves 41 can be depressurized, and all arc-shaped plates 4 can be tightened. Compared with the original method of pressing the first pressure relief rods 45 in sequence, it is easier for personnel to operate.

[0038] Example 8: The inner surface of the arc plate 4 is provided with a placement groove 49; the vibration shell 11 is placed in the placement groove 49; the groove wall of the placement groove 49 extends outward and is threadedly connected to the placement bolt 9; the outer wall of the vibration shell 11 is provided with a threaded hole 19 aligned with the placement bolt 9; the placement bolt 9 is threadedly engaged with the threaded hole 19.

[0039] After the placement bolt 9 is tightened, it can be removed from the threaded hole 19, so that the vibrator 1 can be removed from the placement groove 49. After the vibrator 1 is placed in the placement groove 49, the placement bolt 9 can be tightened and inserted into the threaded hole 19 on the outer wall of the vibrating shell 11 to lock the vibrator 1. In this way, the number of vibrators 1 can be selected selectively, making it more versatile.

[0040] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the appendix. Figure 2 The orientations or positional relationships shown are for the convenience of describing the present invention and simplifying the description only, and are not intended to 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 limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and should not be construed as indicating or implying relative importance.

[0041] The foregoing has shown and described 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 embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A diameter-adjustable feedback electromagnetic vibrator, characterized in that: The system includes a vibrator and mounting components. The vibrator comprises a vibrating shell, coil bases, a metal plate, a first slider, a copper coil, and a vibrating spring. Two coil bases are located on either side of the metal plate, with copper wire grooves and a first sliding groove provided on one side close to each other. The copper wire grooves embed the copper coils. The first slider is slidably connected within the first sliding groove. The first slider is fixedly connected to the metal plate. The coil bases are made of stacked silicon steel sheets. The metal plate is an aluminum block used to cut magnetic field lines, with vibrating springs installed at both ends. The other end of the vibrating spring rests against the inner wall of the vibrating shell. The vibrating shell is composed of an upper shell and a lower shell that overlap each other. The coil bases, metal plate, and vibrating springs are located inside the vibrating shell. The vibrating shell is placed inside the mounting components. A sensor communicating with the inside of the pipe is provided on the outer wall of the pipe. The sensor is used to monitor the pressure signal inside the pipe in real time, forming a closed-loop feedback control with the vibrator. Based on the pressure signal, the sensor automatically adjusts the current input to the copper coil to control the vibration frequency. The mounting assembly includes multiple arc-shaped plates; each arc-shaped plate is circumferentially connected to two extension plates; the vibrator is embedded in the inner surface of the arc-shaped plate and is covered with a rubber pad; one of the extension plates on the single arc-shaped plate is fixedly connected to a first connecting rod at a forward position away from the arc-shaped plate; the first connecting rod has an insertion hole at a rearward position; another extension plate on the single arc-shaped plate is fixedly connected to a second connecting rod at a rearward position away from the arc-shaped plate; the second connecting rod has a movable hole at a forward position; an insertion rod is movably connected within the movable hole; the insertion rod is connected to the bottom of the movable hole via a first spring; a groove is provided through the outward-facing arc-shaped inner wall of the movable hole; a slidable block is connected within the groove; the slidable block is fixedly connected to the arc-shaped outer wall of the insertion rod; The insertion rod has a guide angle at the end away from the first spring; the outer arc of the insertion rod has an annular groove; the inner arc of the insertion hole has a groove aligned with the groove; a locking block is slidably connected in the groove; the locking block is connected to the bottom of the groove by a second spring; the bottom of the groove has a pull groove facing outward; an L-shaped pull block is slidably connected in the pull groove; the pull block is fixedly connected to the locking block.

2. The adjustable-diameter feedback electromagnetic vibrator according to claim 1, characterized in that: The outer wall of the arc-shaped plate is provided with an extension groove in the circumferential direction; the extension plate is slidably connected in the extension groove; the extension plate and the bottom of the extension groove are connected by a tension spring.

3. The adjustable-diameter feedback electromagnetic vibrator according to claim 2, characterized in that: The arc-shaped plate has a pressure relief groove inside; a first pressure relief hole is provided through one end of the pressure relief groove near the outer wall of the arc-shaped plate; a first pressure relief rod moves in the first pressure relief hole; the other end of the pressure relief groove is connected to the bottom of two extension grooves through a second pressure relief hole; the extension plate is slidably sealed to the extension groove; a pressure relief ball is abutted by a pressure relief spring at the position where the pressure relief groove and the first pressure relief hole are connected; the first pressure relief rod is fixedly connected to the pressure relief ball.

4. The adjustable-diameter feedback electromagnetic vibrator according to claim 3, characterized in that: A first circular groove is provided inside the first connecting rod and near the insertion hole; one end of the first circular groove is connected to the bottom of the insertion hole through a first circular hole; the other end of the first circular groove is connected to the end of the extension plate near the extension groove through a first connecting hole; the position where the first circular groove and the first circular hole are connected is abutted against the first ball by a first circular spring; the outer wall of the first ball is fixedly connected to the first circular rod; the first circular rod passes through the first circular hole. The insertion rod is in a movably sealed fit with the insertion hole; the insertion rod is in a movably sealed connection with the movable hole; a second circular groove is provided inside the insertion rod; a second circular hole is provided through the second circular groove at the end away from the first spring; the other end of the second circular groove is connected to the end of the extension plate near the extension groove through a second connecting hole; the position where the second circular hole and the second circular groove are connected is abutted against the second sphere by a second circular spring; a second circular rod that can pass through the second circular hole is fixed to the outer wall of the second sphere; the first circular rod and the second circular rod can contact each other; the first circular spring and the second circular spring have the same elastic force.

5. The adjustable-diameter feedback electromagnetic vibrator according to claim 4, characterized in that: The inner surface of the arc-shaped plate is provided with a placement groove; the vibration shell is placed in the placement groove; the groove wall of the placement groove extends outward and is threadedly connected to the placement bolt; the outer wall of the vibration shell is provided with a threaded hole aligned with the placement bolt; the placement bolt is threadedly engaged with the threaded hole.

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