Stuffing extrusion device with controllable extrusion amount

Abstract

The invention relates to the technical field of stuffing processing, in particular to an extrusion-amount-controllable stuffing extrusion device which is characterized in that a water pipe is movably inserted into the top end of a first cover plate, and a metering pump is mounted on the inner wall of the water pipe; a rotating column is fixed to the bottom end of the rotating disc, a screw and a connecting column are arranged at the bottom end and the surface of the rotating column correspondingly, and a scraping plate and a scraping rod are fixed to the other end of the connecting column; the bottom end of the surface of the discharging port is movably sleeved with a square shell, a connecting pipe is fixedly inserted into the bottom end of the square shell, a sliding block is movably inserted into the top end of the square shell, a movable circular ring is fixed to the bottom end of the sliding block, and a connecting block is fixed to one side of the movable circular ring. The electric push rod pushes the rotating column to move, the use positions of the movable circular ring and the sliding block are changed, the purpose of adjusting the stuffing extrusion amount can be achieved, new production requirements can be met, and complex equipment transformation or replacement is not needed.

Description

Technical Field

[0001] The invention relates to the technical field of filling processing, in particular to a filling extrusion device with controllable extrusion amount. Background Art

[0002] In the food processing industry, fillings are widely used. The production of various snacks such as steamed buns, dumplings, moon cakes, and cakes cannot be separated from fillings. The traditional filling method mainly relies on manual operation. Workers use spoons or other simple tools to scoop out the fillings and place them into the food body. This method has many disadvantages. The first is low efficiency and slow manual operation, which makes it difficult to meet the needs of large-scale production, especially during peak sales seasons such as festivals. Production efficiency has become a key factor restricting corporate output.

[0003] Most of the existing filling extrusion devices have a fixed extrusion volume, which makes it difficult to adjust the amount of filling extrusion and difficult to adapt to different food filling demands and production plans. At the same time, when some devices are in use, it is difficult to accurately confirm the filling output, water injection and feed amount, which affects waste and pollution during processing. In addition, if the filling is left in the silo for too long, it is easy to dry or stratify, affecting the taste of the filling.

[0004] To this end, we proposed a filling extrusion device with controllable extrusion volume to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a filling extrusion device with controllable extrusion amount, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a filling extrusion device with controllable extrusion amount, comprising a support frame, A silo is fixed on one side of the support frame, and a discharge port is provided at the bottom end of the silo, a visual sensor is installed on the inner wall of the discharge port, a No. 1 cover plate is movably provided on the top of the silo, and connecting plates are fixed at both ends of one side of the No. 1 cover plate, a No. 2 cover plate is provided on one side of the No. 1 cover plate, and a feed pipe is movably inserted at the top of the No. 2 cover plate, a water pipe is movably inserted at the top of the No. 1 cover plate, and a quantitative pump is installed on the inner wall of the water pipe; A motor is installed on one side of the support frame, and a moving disc is fixed at the bottom end of the motor, a belt is movably sleeved on the surface of the moving disc, and a rotating disc is movably inserted at the other end of the belt, a rotating column is fixed at the bottom end of the rotating disc, a screw and a connecting column are respectively provided at the bottom end and the surface of the rotating column, and a scraper and a scraper rod are fixed at the other end of the connecting column; A square outer shell is movably sleeved on the bottom end of the surface of the discharge port, and a connecting pipe is fixedly inserted at the bottom end of the square outer shell. A slider is movably inserted at the top end of the square outer shell, and a moving ring is fixed to the bottom end of the slider. A connecting block is fixed to one side of the moving ring. A square plate is fixed to one side of the slider, and an electric push rod is installed on one side of the square plate. A laser displacement sensor is installed above the electric push rod. A label is fixed to the top end of the square outer shell.

[0007] Preferably, both sides of the bottom end of the support frame are fixed to the ground. A silo is fixed to one side of the support frame. An electric push rod is installed at the top end of one end of the support frame through a limit plate and screws. A laser displacement sensor is installed at the top end of the limit plate. The rotating column is fixed to one side of the support frame through the limit plate and screws, enabling the whole to operate and be used stably, and also facilitating installation, disassembly and movement.

[0008] Preferably, one ends of the feed pipe and the water pipe respectively extend into the interior of the silo, so that water and filling can be accurately input into the silo.

[0009] Preferably, silica gel rings are respectively fixedly sleeved on the bottom end of the discharge port, the top end of the connecting pipe, and the top end of the moving ring. The discharge port, the connecting pipe and the moving ring are connected and communicated with each other. Silica gel has excellent elasticity, can form a tight fit between different components, reduce the pollution caused by the seepage of the filling, and increase the tightness of the connection.

[0010] Preferably, two groups of connecting plates are symmetrically arranged. The two groups of connecting plates are movably inserted with the first cover plate. The connecting plates and the second cover plate are fixed by screws. The first cover plate and the second cover plate are respectively fixed to both sides of the top end of the silo by screws. A rotating column is rotatably inserted in the middle of the first cover plate and the connecting plate, enabling the first cover plate and the second cover plate to be disassembled and fixed, facilitating cleaning, and also allowing the interior of the silo to be opened.

[0011] Preferably, multiple groups of connecting columns are provided. Scrapers are respectively fixed to one side of two of the groups of connecting columns, and the scrapers are close to the inner wall of the support frame. Scraping rods are respectively fixed to one side of the remaining two groups of connecting columns, and the scraping rods are close to the inner wall of the support frame. The scraping rods are arranged in an inclined shape to clean the residual filling on the inner wall of the silo, reduce unnecessary residues, and can also stir the filling to reduce precipitation.

[0012] Preferably, a square groove is formed on the back surface of the square outer shell, and a square plate is movably inserted in the square groove to limit the moving positions of the square plate and multiple moving rings, reduce the occurrence of deviation, and thus extend the service life.

[0013] Preferably, multiple groups of the identification stickers are provided, and the multiple groups of the identification stickers are set to be red, so that the used movable ring can be directly observed to timely understand the amount of the discharged material.

[0014] Preferably, multiple groups of the movable rings and the connecting blocks are respectively provided. The multiple groups of the movable rings are connected by the connecting blocks. One group of the movable rings is solid, and circular grooves are formed at the tops of the remaining movable rings, and the diameters of the circular grooves are different. The circular grooves at the tops of the multiple groups of the movable rings are distributed equidistantly from large to small to adapt to different extrusion requirements and increase the practicability.

[0015] The present invention provides a filling extrusion device with controllable extrusion amount, having the following beneficial effects: By pushing the rotating column to move through the electric push rod, bringing about the change of the use positions of the movable ring and the slider, the purpose of adjusting the filling extrusion amount can be achieved. When it is necessary to change the product specifications or adjust the production plan, only by adjusting the extrusion amount through the control system of the device, the new production requirements can be adapted without complex equipment modification or replacement. It can also be adjusted according to the filling amount required for different foods to meet the processing requirements of various food fillings, reduce product quality problems caused by too much or too little filling, make the filling content of the product just right, and maintain the quality and quality of the product.

[0016] Through the combined use of the metering pump, the vision sensor and the laser displacement sensor, the purpose of monitoring and controlling the processing process can be achieved, increasing the safety and flexibility of the device during use, detecting and feeding back different stages and different extrusion amounts, maintaining continuous operation, reducing operation pauses and mistakes, and thus increasing the production efficiency and continuity.

[0017] By injecting and detecting water flow through the metering pump installed on the inner wall of the water pipe, rotating the movable disk to drive the rotation of the rotating column and the rotating disk, the connecting column stirs the filling inside, and the scraper and the scraping rod scrape the filling on the inner wall, the purpose of improving the filling taste can be achieved, so that the filling can be transported and mixed at the same time, reducing the occurrence of layering and precipitation. Water can also be added regularly to maintain the viscosity of the filling, facilitating subsequent processing and production, reducing water loss, and maintaining the taste of the filling and the food. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a three-dimensional front view schematic diagram of the structure of the present invention; Figure 2 Front elevation view of the structure of the present invention; Figure 3 Front elevation view of the structure of the connecting plate of the present invention; Figure 4 Front elevation view of the structure of the rotating disc of the present invention; Figure 5 Front sectional view of the silo of the present invention; Figure 6 Front elevation view of the structure of the square housing of the present invention; Figure 7 Sectional view of the structure of the square housing of the present invention; Figure 8 Front elevation view of the structure of the moving ring of the present invention.

[0020] In the figure: 1, support frame; 2, silo; 3, feed pipe; 4, water pipe; 5, metering pump; 6, discharge port; 7, vision sensor; 8, first cover plate; 9, connecting plate; 10, second cover plate; 11, connecting column; 12, scraper; 13, scraping rod; 14, screw; 15, rotating column; 16, rotating disc; 17, belt; 18, motor; 19, moving disc; 20, square housing; 21, connecting pipe; 22, electric push rod; 23, laser displacement sensor; 24, identification sticker; 25, square plate; 26, moving ring; 27, connecting block; 28, slider. Detailed implementation manners Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-8 As shown, the present application provides a filling extrusion device with controllable extrusion amount, including a support frame 1, One side of the support frame 1 is fixed with a silo 2, and the bottom end of the silo 2 is provided with a discharge port 6. A vision sensor 7 is installed on the inner wall of the discharge port 6. The top end of the silo 2 is movably provided with a first cover plate 8, and both ends of one side of the first cover plate 8 are fixed with a connecting plate 9. The vision sensor 7 is a vision sensor. It captures images around the extrusion port through a camera, and then uses image processing algorithms to analyze the images to identify whether there are signs of filling leakage, so as to facilitate the operator to discover problems in time and reduce the occurrence of leakage and pollution.

[0023] On one side of the support frame 1, a motor 18 is installed, and at the bottom end of the motor 18, a moving disc 19 is fixed. A belt 17 is movably sleeved on the surface of the moving disc 19, and at the other end of the belt 17, a rotating disc 16 is movably inserted. At the bottom end of the rotating disc 16, a rotating column 15 is fixed, and at the bottom end of the rotating column 15, a screw 14 is installed. The motor 18 is a DC motor. By changing the magnitude of the input DC voltage, the speed control of the motor can be achieved, and thus the speed of the motor can be adjusted according to the extrusion amount requirements of various fillings. The motor 18 is provided with a housing, and the housing is provided with wire holes and heat dissipation holes.

[0024] According to the attached Figure 1 As shown, both sides of the bottom end of the support frame 1 are fixed to the ground. On one side of the support frame 1, a feed bin 2 is fixed. At the top end of one end of the support frame 1, an electric push rod 22 is installed through a limit plate and screws. At the top end of the limit plate, a laser displacement sensor 23 is installed. The rotating column 15 is fixed to one side of the support frame 1 through a limit plate and screws, which can fix the whole and some components and is also convenient for inspection and maintenance. The laser displacement sensor 23 emits a laser beam to the surface of the measured object, and the reflected light is focused on the image sensor through a lens, and the distance between the object and the sensor can be calculated. The laser displacement sensor 23 is a non-contact measurement, which will not interfere with the movement of the electric push rod 22 and can also judge whether the electric push rod 22 and the corresponding rotating disc 16 are correct, so that the amount of the extruded filling is accurate, reducing production errors and waste.

[0025] According to the attached Figure 2 As shown, on one side of the first cover plate 8, a second cover plate 10 is provided, and at the top end of the second cover plate 10, a feed pipe 3 is movably inserted. At the top end of the first cover plate 8, a water pipe 4 is movably inserted, and a metering pump 5 is installed on the inner wall of the water pipe 4. One ends of the feed pipe 3 and the water pipe 4 respectively extend into the interior of the feed bin 2. During use, the feed pipe 3 feeds the filling into the feed bin 2, and the water pipe 4 and the metering pump 5 inject water into the feed bin 2. According to the formula requirements of the operator, the metering pump 5 can transport water into the feed bin 2 according to the preset flow rate and time, so that the filling maintains a certain viscosity and elasticity.

[0026] According to the attached Figure 6 As shown, at the bottom end surface of the discharge port 6, a square housing 20 is movably sleeved, and at the bottom end of the square housing 20, a connecting pipe 21 is fixedly inserted. At the bottom end of the discharge port 6, the top end of the connecting pipe 21, and the top end of the moving ring 26, silica gel rings are respectively fixedly sleeved. The discharge port 6, the connecting pipe 21, and the moving ring 26 are connected and communicated with each other. The filling is transported out from the discharge port 6, then the filling passes through the corresponding moving ring 26, and finally flows into the connecting pipe 21 to be extruded, so that the filling can be smoothly extruded and flow, reducing the overflow and pollution of the filling during flow, and increasing the tightness of the connection and communication between the discharge port 6, the connecting pipe 21, and the moving ring 26.

[0027] According to the attachedFigure 3 As shown in the figure, there are two sets of connecting plates 9 symmetrically arranged. The two sets of connecting plates 9 are movably inserted into the first cover plate 8. The connecting plate 9 and the second cover plate 10 are fixed by screws. The first cover plate 8 and the second cover plate 10 are respectively fixed to both sides of the top of the silo 2 by screws. A rotating column 15 is rotatably inserted in the middle of the first cover plate 8 and the connecting plate 9, which can seal the silo 2, reduce the entry of dust and impurities, keep the filling inside the silo 2 clean, and can also expose the internal structure and filling condition of the silo 2 when cleaning and maintenance are needed, suitable for different usage scenarios.

[0028] According to the appendix Figure 7 As shown in the figure, a square groove is formed in the back of the square housing 20, and a square plate 25 is movably inserted into the square groove. A square plate 25 is fixed to one side of the slider 28, and an electric push rod 22 is installed on one side of the square plate 25. A laser displacement sensor 23 is installed above the electric push rod 22. With the movement of the electric push rod 22, the slider 28, as well as different moving rings 26 and connecting blocks 27, can be driven to move, suitable for the filling requirements of various types and specifications of food. The laser displacement sensor 23 is a stepping electric push rod. The number and frequency of the pulse signals of the electric push rod 22 are preset, so that the moving distance of the push rod can be accurately controlled to achieve equidistant movement, suitable for different filling requirements and scenarios of shutting down and not using.

[0029] According to the appendix Figure 7 As shown in the figure, identification stickers 24 are fixed to the top of the square housing 20. There are multiple groups of identification stickers 24, and the multiple groups of identification stickers 24 are set to be red, which is convenient for the laser displacement sensor 23 to observe and detect, and improves the detection and recognition efficiency.

[0030] According to the appendix Figure 5 As shown in the figure, a screw rod 14 and a connecting column 11 are respectively arranged at the bottom end and the surface of the rotating column 15. The other end of the connecting column 11 is fixed with a scraping plate 12 and a scraping rod 13. There are multiple groups of connecting columns 11. Scraping plates 12 are respectively fixed to one side of two of the connecting columns 11, and the scraping plates 12 are close to the inner wall of the support frame 1. Scraping rods 13 are respectively fixed to one side of the remaining two connecting columns 11, and the scraping rods 13 are close to the inner wall of the support frame 1. The scraping rods 13 are set to be inclined, which can reduce the residue on the inner wall of the silo 2, make the filling mix more evenly, and can also fully stir the filling, reduce the occurrence of layering, and keep the taste of the filling.

[0031] According to the appendix Figure 8As shown, a slider 28 is movably inserted at the top end of the square housing 20, and a moving ring 26 is fixed to the bottom end of the slider 28. A connecting block 27 is fixed to one side of the moving ring 26. Multiple groups of the moving ring 26 and the connecting block 27 are provided. The multiple groups of moving rings 26 are connected by the connecting blocks 27. One group of the moving rings 26 is solid, and circular grooves are formed at the top ends of the remaining moving rings 26, and the diameters of the circular grooves are different. The circular grooves at the top ends of the multiple groups of moving rings 26 are distributed equidistantly from large to small, so that the amount of the filling flowing out is different and can be flexibly adjusted. When not in use, the discharge port 6 can be sealed to prevent the filling from flowing out.

[0032] Working principle: Before use, fix the bottom end of the support frame 1 at an appropriate position, fix the feed bin 2 at the corresponding position of the support frame 1 for limiting, and insert the discharge port 6 into the square housing 20. Put the first cover plate 8 on the surface of the water pipe 4, and put the second cover plate 10 on the surface of the feed pipe 3. At this time, the first cover plate 8 and the second cover plate 10 are simultaneously sleeved on the surface of the rotating column 15. Then, align the first cover plate 8 and the second cover plate 10 with the positions on both sides of the feed bin 2 in sequence, and at the same time, let the connecting plate 9 be engaged with the corresponding position of the second cover plate 10. Fix the connecting plate 9 and the second cover plate 10, and the first cover plate 8, the connecting plate 9 and the feed bin 2 in sequence through screws, and then insert the feed pipe 3 into the second cover plate 10; When in use, turn on the device through an external power supply and an external remote control. Transport the filling into the feed bin 2 through the feed pipe 3. The motor 18 drives the moving disc 19 and the belt 17 to rotate, so that the rotating disc 16 and the rotating column 15 rotate, driving multiple groups of connecting columns 11 and screw rods 14 to rotate simultaneously. The multiple groups of connecting columns 11 drive the scraper 12 and the scraping rod 13 to rotate in the feed bin 2, scraping the filling on the inner wall of the feed bin 2. When the screw rod 14 rotates, the spiral blades will continuously apply a thrust to the filling, and the filling will be pushed downward in the feed bin 2 along the inclined surface of the spiral blades to the discharge port 6 for transportation; When not in use, the solid end of the rotating disc 16 is located below the discharge port 6 to keep it sealed. When it is necessary to increase the extrusion amount, increase the starting speed of the motor 18, and at the same time start the electric push rod 22. The electric push rod 22 moves to drive the square plate 25 to move to the right on the back of the square housing 20, thereby driving the slider 28, the moving ring 26 and the connecting block 27 to move to the right. At this time, the square plate 25 stays on the corresponding identification sticker 24 surface. The laser displacement sensor 23 identifies and detects the position where the square plate 25 stays. If there is a deviation in the position, it will be timely fed back to the terminal and adjusted by changing the working heat. If it is correct, continue the transportation. The filling in the discharge port 6 passes through the moving ring 26 and flows out through the connecting pipe 21; During processing, water is injected into the feed bin 2 regularly and quantitatively according to the preset value of the metering pump 5. When it is necessary to adjust the extrusion amount, start the electric push rod 22 to drive the corresponding moving ring 26 to move left and right to the lower part of the discharge port 6.

[0033] The above is the entire working principle of the present invention.

[0034] It should be noted that the device structure and drawings of the present invention mainly describe the principle of the present invention. Based on the technical design principle, the settings of the power mechanism, power supply system, control system, etc. of the device are not fully described. However, on the premise that those skilled in the art understand the principle of the above invention, the specific details of its power mechanism, power supply system, and control system can be clearly known. The control method of the application document is automatically controlled by a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art. The standard parts used can be purchased from the market, and the specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding in the existing technology. The machines, parts, and equipment all adopt conventional models in the existing technology, and for the components known to those skilled in the art, their structures and principles can all be learned from technical manuals or obtained through conventional experimental methods.

[0035] Finally, several points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the internal connection of two components, and can be directly connected. "Upper", "lower", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may change. Second, in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved, and other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other. Finally, the above is only the preferred embodiment of the present invention and is not used to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stuffing extrusion device with controllable extrusion volume, comprising a support frame (1), characterized in that: On one side of the support frame (1), a material bin (2) is fixed, and a discharge port (6) is arranged at the bottom end of the material bin (2). A visual sensor (7) is installed on the inner wall of the discharge port (6). A first cover plate (8) is movably arranged at the top end of the material bin (2), and connecting plates (9) are fixed at both ends on one side of the first cover plate (8). A second cover plate (10) is arranged on one side of the first cover plate (8), and a feed pipe (3) is movably inserted at the top end of the second cover plate (10). A water pipe (4) is movably inserted at the top end of the first cover plate (8), and a metering pump (5) is installed on the inner wall of the water pipe (4); On one side of the support frame (1), a motor (18) is installed, and a moving disc (19) is fixed at the bottom end of the motor (18). A belt (17) is movably sleeved on the surface of the moving disc (19), and a rotating disc (16) is movably inserted at the other end of the belt (17). A rotating column (15) is fixed at the bottom end of the rotating disc (16). A screw rod (14) and a connecting column (11) are respectively arranged at the bottom end and the surface of the rotating column (15). The other end of the connecting column (11) is fixed with a scraper (12) and a scraping rod (13); A square shell (20) is movably sleeved at the bottom end of the surface of the discharge port (6), and a connecting pipe (21) is fixedly inserted at the bottom end of the square shell (20). A slider (28) is movably inserted at the top end of the square shell (20), and a moving ring (26) is fixed at the bottom end of the slider (28). A connecting block (27) is fixed on one side of the moving ring (26). A square plate (25) is fixed on one side of the slider (28), and an electric push rod (22) is installed on one side of the square plate (25). A laser displacement sensor (23) is installed above the electric push rod (22). A label sticker (24) is fixed at the top end of the square shell (20).

2. The stuffing extrusion device with controllable extrusion amount according to claim 1, characterized in that: Both sides of the bottom end of the support frame (1) are fixed to the ground. A material bin (2) is fixed on one side of the support frame (1). An electric push rod (22) is installed at the top end of one end of the support frame (1) through a limiting plate and screws. A laser displacement sensor (23) is installed at the top end of the limiting plate. The rotating column (15) is fixed to one side of the support frame (1) through a limiting plate and screws.

3. The stuffing extrusion device with controllable extrusion amount according to claim 1, wherein: One ends of the feed pipe (3) and the water pipe (4) respectively extend into the interior of the material bin (2).

4. The filling extrusion device with controllable extrusion amount according to claim 1, characterized in that: Silicone rings are respectively fixedly sleeved at the bottom end of the discharge port (6), the top end of the connecting pipe (21), and the top end of the moving ring (26). The discharge port (6), the connecting pipe (21) and the moving ring (26) are communicated with each other.

5. The filling extrusion device with controllable extrusion amount according to claim 1, wherein: There are two sets of the connecting plates (9) symmetrically arranged. The two sets of the connecting plates (9) are movably inserted into the first cover plate (8). The connecting plates (9) are fixed to the second cover plate (10) by screws. The first cover plate (8) and the second cover plate (10) are respectively fixed to both sides of the top of the silo (2) by screws. A rotating column (15) is rotatably inserted between the first cover plate (8) and the connecting plate (9).

6. The stuffing extrusion device with controllable extrusion amount according to claim 1, wherein: There are multiple sets of the connecting columns (11). Scrapers (12) are respectively fixed to one sides of two of the sets of the connecting columns (11), and the scrapers (12) are close to the inner wall of the support frame (1). Scraping rods (13) are respectively fixed to one sides of the remaining two sets of the connecting columns (11), and the scraping rods (13) are close to the inner wall of the support frame (1). The scraping rods (13) are arranged in an inclined shape.

7. An extrusion device for fillings with controllable extrusion amount according to claim 1, characterized in that: A square groove is formed in the back of the square housing (20), and a square plate (25) is movably inserted into the square groove.

8. The filling extrusion device with controllable extrusion amount according to claim 1, wherein: There are multiple sets of the identification stickers (24), and the multiple sets of the identification stickers (24) are red.

9. The stuffing extrusion device with controllable extrusion amount according to claim 1, characterized in that: There are multiple sets of the moving rings (26) and the connecting blocks (27) respectively. The multiple sets of the moving rings (26) are connected by the connecting blocks (27). One of the moving rings (26) is solid. Circular grooves are formed at the tops of the remaining moving rings (26), and the diameters of the circular grooves are different. The circular grooves at the tops of the multiple sets of the moving rings (26) are distributed equidistantly from large to small.

Images