Low noise vibrating screen

Abstract

This utility model discloses a low-noise vibration screening machine, including a base frame, a connecting shell in the middle of the base frame, a slide block slidably connected inside the connecting shell, a V-shaped shell at the upper end of the slide block, a V-shaped screen plate at the bottom right end of the V-shaped shell, a vibration motor inside the slide block, and an auxiliary mechanism. The auxiliary mechanism includes an intercepting plate, a guide plate, a second V-shaped shell, and a first sound-absorbing cotton. The intercepting plate and the guide plate are both located inside the right end of the first V-shaped shell. This low-noise vibration screening machine adopts a simplified main frame and adds sound-absorbing cotton. By reducing excessive vibration noise caused by the large number of frame components and partially absorbing the vibration noise waves generated by the components, the vibration screening machine is noise-reducing. At the same time, the device increases the vibration frequency of the material passing through the screening part by reducing the time required for a single up-and-down movement during the material vibration screening process, thereby improving the screening efficiency of the device.

Description

Technical Field

[0001] This utility model relates to the field of plastic tool packaging box production technology, specifically a low-noise vibration screening machine. Background Technology

[0002] Injection-molded plastic products are separated from the material stalk (scrap) through cutting and other techniques, and then the plastic products are separated from the material stalk through a screening device.

[0003] In the prior art, patent publication number CN 219745460 U discloses a vibrating screen, which dissipates the kinetic energy generated during the vibration of the shell through the frictional cooperation between the first spring, the crossbar, and the slide cylinder, thereby playing a damping role and achieving shock reduction. This ensures the screening quality while also extending the service life of the vibrating screen. However, in the above-mentioned prior art, the overall vibrating frame structure is relatively complex, with many parts. The connection points between different parts are subject to vibration and generate noise, resulting in a relatively large noise level from the device's vibration. Furthermore, there is room for improvement in the material screening efficiency of the vibrating screening section of the device. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a low-noise vibration screening machine. The device adopts a simplified main frame and adds sound-absorbing cotton. By reducing the excessive vibration noise caused by the large number of frame components and partially absorbing the vibration noise waves generated by the components, the vibration screening machine is noise-reduced. At the same time, the device increases the vibration frequency of the material passing through the screening part by reducing the time required for a single up-and-down movement during the material vibration screening process, thereby improving the screening efficiency of the device and effectively solving the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a low-noise vibration screening machine, including a base frame, a connecting shell in the middle of the base frame, a slide block slidably connected inside the connecting shell, a V-shaped shell at the upper end of the slide block, a V-shaped screen plate at the bottom right end of the V-shaped shell, a vibration motor inside the slide block, and an auxiliary mechanism.

[0006] The auxiliary mechanism includes an interceptor plate, a guide plate, a second V-shaped shell, and a first sound-absorbing cotton. The interceptor plate and the guide plate are both located at the right end of the inside of the first V-shaped shell. The guide plate is located to the right of the interceptor plate. The bottom of the guide plate is provided with the second V-shaped shell, and the inside of the second V-shaped shell is provided with evenly distributed first sound-absorbing cotton.

[0007] The device adopts a simplified main frame and adds sound-absorbing cotton. By reducing excessive vibration noise caused by the large number of frame components and partially absorbing the vibration noise waves generated by the components, the noise of the vibrating screen is reduced. At the same time, the device increases the vibration frequency of the material passing through the screening part by reducing the time required for a single up-and-down movement during the material vibration screening process, thereby improving the screening efficiency of the device.

[0008] Furthermore, it also includes a microcontroller, which is located outside the base frame. The input terminal of the microcontroller is electrically connected to an external power supply, and the output terminal of the microcontroller is electrically connected to the input terminal of the vibration motor, which facilitates the control of electrical components within the device.

[0009] Furthermore, the auxiliary mechanism also includes telescopic columns, spring one, and rectangular buffer seats. The rectangular buffer seats are slidably connected to the rectangular grooves opened at the lower ends of the front and rear sides of the V-shaped shell two. Telescopic columns and spring one are evenly distributed between the rectangular buffer seats and the V-shaped shell two. The spring one is movably sleeved with the outer end of the adjacent telescopic column. The material vibrating and moving upward to the guide plate in the low-noise vibration screening machine undergoes a second stage of elastic buffer protection against hard collision.

[0010] Furthermore, the auxiliary mechanism also includes rubber sheet one and rubber sheet two. Rubber sheet one is respectively disposed on the lower side of the rectangular buffer seat, and rubber sheet two is disposed on the outer bottom of the V-shaped shell two, which provides the first stage of hard collision protection for the material that vibrates and moves upward to the guide plate in the low-noise vibration screening machine.

[0011] Furthermore, a V-shaped baffle is installed on the lower right side of the outer side of the V-shaped shell. Locking bolts are inserted into the round holes at both ends of the V-shaped baffle. Threaded holes are evenly distributed on both sides of the lower right side of the outer side of the V-shaped shell. The locking bolts are threadedly connected to the adjacent threaded holes to adjust the exposed area of ​​the bottom of the V-shaped screen plate in the low-noise vibration screening machine.

[0012] Furthermore, a damper and a second spring are evenly distributed between the connecting shell and the slide block. The second spring is movably connected to the outer end of the adjacent damper. The interior of the connecting shell and the front and rear sides of the slide block are evenly distributed with sound-absorbing cotton, which elastically dampens and absorbs the vibration force of the low-noise vibration screening machine and absorbs and reduces some of the sound waves generated by the operation of the device.

[0013] Furthermore, a frequency converter is provided on the left side of the base frame. The frequency converter is installed in conjunction with the vibrating motor to regulate the vibration frequency of the vibrating motor in the low-noise vibrating screening machine.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. When using a low-noise vibration screening machine, the main frame of the device is simplified, thereby reducing the excessive vibration noise caused by the large number of frame components. At the same time, by adding sound-absorbing cotton, the frictional heat generated between the porous structure of the sound-absorbing cotton and the sound waves is utilized to partially absorb the vibration noise waves generated by the components, thereby reducing the noise of the vibration screening machine.

[0016] 2. When using a low-noise vibration screening machine, the structural design of the interceptor plate and guide plate reduces the time required for a single vibration up and down movement during the material vibration screening process. By increasing the vibration frequency of the material passing through the screening part, the screening efficiency of the device is improved. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure on the right side of this utility model;

[0019] Figure 3 This is a schematic diagram of the internal structure on the right side of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure on the right side of the interceptor plate and guide plate of this utility model;

[0021] Figure 5 This is an enlarged structural diagram of point A in this utility model;

[0022] Figure 6 This is an enlarged structural diagram of section B of the present invention;

[0023] Figure 7 This is an enlarged structural diagram of point C in this utility model.

[0024] In the diagram: 1. Base frame, 2. Connecting shell, 3. Slide seat, 4. V-shaped shell one, 5. V-shaped screen plate, 6. Vibration motor, 7. Auxiliary mechanism, 71. Interception plate, 72. Guide plate, 73. V-shaped shell two, 74. Telescopic column, 75. Spring one, 76. Rectangular buffer seat, 77. Rubber sheet one, 78. Rubber sheet two, 79. Sound-absorbing cotton one, 8. V-shaped baffle, 9. Threaded hole, 10. Locking bolt, 11. Damper, 12. Spring two, 13. Sound-absorbing cotton two, 14. Frequency converter, 15. Microcontroller. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-7 This embodiment provides a technical solution: a low-noise vibration screening machine, including a base frame 1, a connecting shell 2 in the middle of the base frame 1, a slide block 3 slidably connected inside the connecting shell 2, a V-shaped shell 4 at the upper end of the slide block 3, a V-shaped screen plate 5 at the bottom right end of the V-shaped shell 4, and a vibration motor 6 inside the slide block 3; it also includes a microcontroller 15, which is located outside the base frame 1, with its input terminal electrically connected to an external power supply and its output terminal electrically connected to the input terminal of the vibration motor 6.

[0027] Among them, a V-shaped baffle 8 is installed on the lower right side of the outer side of the V-shaped shell 4. Locking bolts 10 are inserted into the round holes at both ends of the V-shaped baffle 8. Threaded holes 9 are evenly distributed on both the front and rear sides of the lower right side of the outer side of the V-shaped shell 4. The locking bolts 10 are threadedly connected to the adjacent threaded holes 9. A frequency converter 14 is installed on the left side of the base frame 1. The frequency converter 14 is installed in conjunction with the vibration motor 6.

[0028] The system also includes an auxiliary mechanism 7. The auxiliary mechanism 7 includes an interceptor plate 71, a guide plate 72, a second V-shaped shell 73, and a first sound-absorbing cotton 79. The interceptor plate 71 and the guide plate 72 are both located at the right end of the inside of the first V-shaped shell 4. The guide plate 72 is located to the right of the interceptor plate 71. The bottom of the guide plate 72 is provided with the second V-shaped shell 73. The inside of the second V-shaped shell 73 is provided with evenly distributed first sound-absorbing cotton 79. The auxiliary mechanism 7 also includes a telescopic column 74, a first spring 75, and a rectangular buffer seat 76. The rectangular buffer seat 76 is slidably connected to the rectangular grooves opened at the lower ends of the front and rear sides of the second V-shaped shell 73. There are evenly distributed telescopic columns 74 and first springs 75 between the rectangular buffer seat 76 and the second V-shaped shell 73. The first springs 75 are movably sleeved with the outer ends of the adjacent telescopic columns 74.

[0029] The auxiliary mechanism 7 also includes rubber sheet 77 and rubber sheet 78. Rubber sheet 77 is respectively set on the lower side of the rectangular buffer seat 76. Rubber sheet 78 is provided on the bottom of the outer side of the V-shaped shell 73. A damper 11 and a spring 12 are evenly distributed between the connecting shell 2 and the slide 3. The spring 12 is movably connected to the outer end of the adjacent damper 11. Sound-absorbing cotton 13 is evenly distributed inside the connecting shell 2 and on the front and rear sides of the slide 3.

[0030] The working principle of this utility model is as follows:

[0031] When using the device to perform vibratory screening of plastic products and material handles (scraps), the plastic products and material handles are conveyed to the inner left end of the V-shaped shell 4 by an external conveying device. Then, the microcontroller 15 starts the vibratory motor 6 (a frequency converter 14 can be connected in series between the output end of the microcontroller 15 and the input end of the vibratory motor 6. The microcontroller 15 can control the frequency converter 14 to regulate the power frequency of the motor running in the vibratory motor 6, thereby realizing the adjustment of the vibration frequency of the vibratory motor 6).

[0032] When the vibrating motor 6 runs, the centrifugal force generated by the high-speed rotation of the internal eccentric block forms an excitation force. This excitation force is applied to the V-shaped shell 4 through the slide block 3, thereby causing the slide block 3 to drive the V-shaped shell 4 to move vertically up and down reciprocally along the inside of the connecting shell 2, which in turn causes the V-shaped shell 4 to vibrate vertically. Through the vibration of the V-shaped shell 4, the plastic product and the material handle move tilted from left to right along the bottom of the V-shaped shell 4.

[0033] The opening at the bottom of the interceptor plate 71 limits the amount of plastic products and material handles entering below the guide plate 72, preventing excessive amounts of plastic products and material handles from passing through the V-shaped screen plate 5 and resulting in insufficient screening. The guide plate 72 allows the plastic products and material handles passing through the interceptor plate 71 to flow above the V-shaped screen plate 5. The plastic products and material handles passing through the V-shaped screen plate 5 are vertically vibrated by the V-shaped shell 4, causing them to rise and separate from the V-shaped screen plate 5. The guide plate 72 shortens the upward movement distance of the plastic products and material handles, reduces the sum of the time required for them to fall after rising, and increases the vibration screening frequency between the V-shaped screen plate 5 and the guide plate 72, thereby improving the screening efficiency of the device. The material handles fall through the screen holes of the V-shaped screen plate 5, while the plastic products continue to move to the right along the upper side of the V-shaped screen plate 5 through the bottom of the V-shaped shell 4, thus achieving the screening and separation of the plastic products and material handles.

[0034] Meanwhile, during the upward movement of the plastic products and material handles within the V-shaped screen plate 5, the viscoelasticity of the rubber molecules within rubber sheets 77 and 78 is utilized to buffer the collision between the plastic products and material handles and the bottom of the guide plate 72. Subsequently, the rectangular buffer seat 76 is pressed, and the telescopic end of the telescopic column 74 and the spring 75 contract, thus providing a second stage of elastic buffering. This prevents hard collisions between the plastic products and material handles and the bottom of the guide plate 72. Through the porous structure inside the sound-absorbing cotton 79, the sound waves generated by the movement of the telescopic end of the telescopic column 74 and the spring 75 are partially absorbed and converted into a small amount of heat energy, reducing the propagation and reflection of sound waves, thereby reducing noise in the vibrating screening section of the vibrating screen.

[0035] During the vertical reciprocating vibration of the V-shaped shell 4, the elastic contraction of the spring 12 and the friction or hydraulic resistance of the elastic and bearing elements inside the damper 11 convert the vibration force into heat energy. The sound-absorbing cotton 13 absorbs part of the sound waves generated during the operation of the spring 12, damper 11 and vibrating motor 6 using the same principle, thereby reducing noise in the vibrating screening machine. By moving the V-shaped baffle 8 to slide left and right along the bottom of the V-shaped shell 4, the covering surface of the V-shaped baffle 8 on the V-shaped screen plate 5 is adjusted, thereby adjusting the material feeding speed of the material handle in the V-shaped screen plate 5. Then, by rotating the locking bolt 10, the locking bolt 10 is threadedly connected to the threaded hole 9 corresponding to the fixed position of the V-shaped baffle 8, thereby fixing the V-shaped baffle 8.

[0036] This device uses sound-absorbing cotton to partially absorb the vibration noise waves generated by the components, thereby reducing the noise of the vibrating screen. At the same time, the device increases the vibration frequency of the material passing through the screening part by reducing the time required for a single up-and-down movement during the material vibration screening process, thus improving the screening efficiency of the device.

[0037] It is worth noting that the vibration motor 6 disclosed in the above embodiments can be PT-MVE10 / 3M-2, the frequency converter 14 can be ACS510, and the microcontroller 15 can be COP8CBE9. The microcontroller 15 controls the vibration motor 6, the frequency converter 14, and the operation of the microcontroller 15 using methods commonly used in the prior art.

[0038] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A low-noise vibrating screening machine, comprising a base frame (1), wherein a connecting shell (2) is provided in the middle of the base frame (1), a slide block (3) is slidably connected inside the connecting shell (2), a V-shaped shell (4) is provided at the upper end of the slide block (3), a V-shaped screen plate (5) is provided at the bottom right end of the V-shaped shell (4), and a vibrating motor (6) is provided inside the slide block (3), characterized in that: It also includes auxiliary mechanisms (7); The auxiliary mechanism (7) includes an interceptor plate (71), a guide plate (72), a second V-shaped shell (73), and a first sound-absorbing cotton (79). The interceptor plate (71) and the guide plate (72) are both located at the right end of the inside of the first V-shaped shell (4). The guide plate (72) is located on the right side of the interceptor plate (71). The bottom of the guide plate (72) is provided with the second V-shaped shell (73). The inside of the second V-shaped shell (73) is provided with evenly distributed first sound-absorbing cotton (79).

2. A low noise vibrating screen machine as claimed in claim 1 wherein: It also includes a microcontroller (15), which is located outside the base frame (1). The input terminal of the microcontroller (15) is electrically connected to an external power supply, and the output terminal of the microcontroller (15) is electrically connected to the input terminal of the vibration motor (6).

3. A low noise vibration screening machine according to claim 1, characterized in that: The auxiliary mechanism (7) also includes a telescopic column (74), a spring (75) and a rectangular buffer seat (76). The rectangular buffer seat (76) is slidably connected to the rectangular grooves opened at the lower ends of the front and rear sides of the V-shaped shell (73). The rectangular buffer seat (76) and the V-shaped shell (73) are provided with evenly distributed telescopic columns (74) and springs (75). The springs (75) are all movably sleeved with the outer ends of the adjacent telescopic columns (74).

4. A low noise vibration screening machine according to claim 3, characterised in that: The auxiliary mechanism (7) also includes a rubber sheet one (77) and a rubber sheet two (78). The rubber sheet one (77) is respectively disposed on the lower side of the rectangular buffer seat (76), and the rubber sheet two (78) is provided on the outer bottom of the V-shaped shell two (73).

5. A low noise vibration screening machine according to claim 1, characterized in that: A V-shaped baffle (8) is installed on the lower right side of the outer side of the V-shaped shell (4). Locking bolts (10) are inserted into the round holes at both ends of the V-shaped baffle (8). Threaded holes (9) are evenly distributed on both the lower right side of the outer side of the V-shaped shell (4). The locking bolts (10) are threadedly connected to the adjacent threaded holes (9).

6. A low-noise vibration screening machine according to claim 1, characterized in that: The connecting shell (2) and the slide (3) are provided with a damper (11) and a spring (12) evenly distributed. The spring (12) is movably connected to the outer end of the adjacent damper (11). The interior of the connecting shell (2) and the front and rear sides of the slide (3) are provided with sound-absorbing cotton (13) evenly distributed.

7. A low noise vibration screening machine according to claim 1, characterized in that: A frequency converter (14) is provided on the left side of the base frame (1), and the frequency converter (14) is installed in conjunction with the vibration motor (6).

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