Vibrating device of up-rotation type screen machine and up-rotation type screen machine

Abstract

The utility model discloses a kind of upper rotary screen machine vibration devices and upper rotary screen machine, it is related to upper rotary screen machine technical field, and upper rotary screen machine vibration device includes digital frequency modulation vibration controller, electromagnet, armature, mounting support and several groups of elastic support elements, electromagnet is fixedly connected on the top of mounting support, armature is located on the top of electromagnet, several groups of elastic support elements are located on the outside of electromagnet, and each elastic support element is fixedly connected with armature and mounting support, several groups of elastic support elements are used to support armature, armature is used to fixedly connect screen body, digital frequency modulation vibration controller is connected with electromagnet, and can control electromagnet power on or power off to make electromagnet adsorb or release armature and make screen body vibrate;Also disclosed is a kind of upper rotary screen machine, including screen body and upper rotary screen machine vibration device.The utility model can prolong the service life of upper rotary screen machine, and improve screening efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of upward-rotating screen screening machines, and in particular to a vibration device for an upward-rotating screen screening machine and an upward-rotating screen screening machine. Background Technology

[0002] The upward-rotating tablet sieve is a specialized device for tablet dust removal, flash removal, and feeding. It utilizes centrifugal force generated by a rotating screen or turntable within the sieve body to separate dust, impurities, and burrs from the tablets as they roll, simultaneously achieving polishing and lifting functions. The upward-rotating tablet sieve combines tablet polishing, dust removal, and high-level conveying, making it a key component of pharmaceutical tablet presses and compatible with various types of tablet presses. It can be used for tablet refining and also as a conveying device for tablets, blocks, and granules requiring automatic dust removal. As a shaped tablet sieving device, the upward-rotating tablet sieve effectively separates solid particles and dust from the tablet surface.

[0003] The inventors know of an upward-rotating tablet sieve machine, which includes a sieve body and a vibration mechanism. The vibration mechanism uses the principle of electromagnet oscillation to generate high-frequency, controllable vibration through electromagnetic force to assist in optimizing the sieving process. By using a potentiometer and a rectifier to control the electromagnet and armature to generate continuous vibration in the spring plate group and transmit the vibration to the spiral sieve body, the sieve body vibrates and thus conveys the tablets (medicinal tablets) from bottom to top. The potentiometer and rectifier control the magnitude or frequency of the current input to the electromagnet, thereby controlling the amplitude (armature vibration amplitude) and frequency (number of vibrations per unit time) of the screen body vibration. The potentiometer is a variable resistor that relies on the mechanical friction between the sliding contact and the resistive body to change the resistance value of the circuit connected to it, thereby adjusting the magnitude and frequency of the output current, and thus adjusting the magnitude or frequency of the current flowing through the electromagnet. The rectifier converts the AC power from the grid into a current form that meets the working requirements of the electromagnet. The electromagnet usually requires pulsating DC power or adjustable DC power to achieve basic power stability. When the current is turned on, the electromagnet coil generates a unidirectional magnetic field, magnetizes the iron core, and then attracts the armature; when the current is turned off, the magnetic field of the electromagnet coil disappears, and the armature is released and acts on the screen body.

[0004] Prolonged use of potentiometers can lead to contact oxidation and resistive film wear, eventually resulting in poor contact. The mechanical contacts of potentiometers are sensitive to dust, humidity, and vibration, which can accelerate their failure. Therefore, potentiometers have a short lifespan, approximately three months. Since potentiometers are used in conjunction with rectifiers, both the potentiometer and rectifier need to be replaced simultaneously. Furthermore, when changing to different sizes of tablets, sieving is required to convert larger tablets to smaller ones. When the tablet diameter is less than 8mm and the tablet weight is less than 1000mg, the tablets may become stuck in the track, causing blockages, quality risks, and machine downtime. To avoid this, the potentiometer resistance needs to be adjusted. However, this adjustment process is too cumbersome and can lead to potentiometer malfunctions. Therefore, a vibrating device for an upward-rotating tablet sieving machine is urgently needed to solve these problems. Utility Model Content

[0005] The purpose of this utility model is to provide a vibration device for an upward-rotating screen and an upward-rotating screen, so as to solve the problems existing in the prior art, extend the service life of the upward-rotating screen, and improve production efficiency.

[0006] To achieve the above objectives, this utility model provides the following solution:

[0007] This utility model provides a vibration device for an upward-rotating screen machine, including a digital frequency-modulated vibration controller, an electromagnet, an armature, a mounting bracket, and several sets of elastic support elements. The electromagnet is fixedly connected above the mounting bracket, the armature is located above the electromagnet, and the several sets of elastic support elements are located outside the electromagnet. Each elastic support element is fixedly connected to the armature and the mounting bracket. The several sets of elastic support elements are used to support the armature, and the armature is used to fixally connect to the screen body. The digital frequency-modulated vibration controller is connected to the electromagnet and can control the electromagnet to be energized or de-energized so that the electromagnet attracts or releases the armature and causes the screen body to vibrate.

[0008] In one embodiment, the elastic support element is a spring sheet.

[0009] In one embodiment, the spring sheet is a manganese steel spring sheet.

[0010] In one embodiment, the manganese steel spring sheet is a plate-shaped manganese steel spring sheet.

[0011] In one embodiment, the elastic support elements are provided in multiple sets and are inclined around the electromagnet.

[0012] In one embodiment, the vibrating device of the rotary screen machine further includes a housing, an upper support base, and a lower support base. The lower support base is fixedly connected to the inner bottom surface of the housing, the mounting bracket is fixedly connected to the upper part of the lower support base, the upper support base is fixedly connected to the inner top surface of the housing, the digital frequency modulation vibration controller is fixedly connected to the housing, the lower end of the upper support base is fixedly connected to the armature, and the upper end of the upper support base extends out of the housing and is used to fixally connect to the screen body.

[0013] This utility model also provides an upward-rotating tablet sieving machine, including a sieve body and a vibrating device as described in any of the above claims, wherein the sieve body is used for sieving tablets.

[0014] In one embodiment, the top-rotating sieve further includes a support structure for fixed connection to the bottom of the mounting bracket; the support structure includes a lifting rod, the movable end of which is fixedly connected to the bottom of the mounting bracket, and the lifting rod is used to adjust the height of the mounting bracket.

[0015] In one embodiment, the lifting rod is equipped with a hand crank for controlling the lifting and lowering of the lifting rod.

[0016] In one embodiment, the support structure further includes a base and a plurality of casters. One end of the base is fixedly connected to the fixed end of the bottom of the lifting rod, and a plurality of casters capable of supporting the ground are fixedly connected to the base.

[0017] The present invention achieves the following technical advantages over the prior art:

[0018] This invention relates to a vibration device for an upward-rotating tablet sieve. A digital frequency-modulated vibration controller adjusts the magnitude and frequency of the output current from the electromagnet, forcing the elastic support element to bear force. This causes the sieve body to vibrate upwards and downwards at high frequency under the influence of the electromagnet, armature, and elastic support element. This generates a cyclical oscillation force within the sieve body, thus facilitating the smooth transport of tablets. By replacing the potentiometer and rectifier devices of the upward-rotating tablet sieve with a digital frequency-modulated vibration controller, the controller utilizes interface circuitry, a microprocessor, a power amplifier module, and other electronic components, adjusting the gain or attenuation of analog signals transmitted between them. This allows for the adjustment of the output current and frequency, avoiding the problems of contact oxidation, resistive film wear, and eventual poor contact caused by long-term use of potentiometers and reliance on the mechanical friction between the sliding contact and the resistive element to change the resistance value of the connected circuit. Furthermore, the digital frequency modulation vibration controller itself has a housing, making it unaffected by external environmental factors such as dust and humidity. Therefore, by using the digital frequency modulation vibration controller, the problems of needing to replace potentiometers and rectifiers due to short lifespan, dust, and high frequency of adjustment when changing drug specifications can be effectively avoided, thus extending the service life of the equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the vibrating device of the upward-rotating sieve machine in Embodiment 1 of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the top-rotating sieve machine in Embodiment 2 of this utility model;

[0022] In the diagram: 1. Outer shell; 2. Digital frequency modulation vibration controller; 3. Electromagnet; 4. Elastic support element; 5. Armature; 6. Upper support base; 7. Lower support base; 8. Mounting support; 9. Lifting rod; 10. Hand crank; 11. Base; 12. Casters; 13. Screen body. Detailed Implementation

[0023] 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.

[0024] The purpose of this utility model is to provide a vibration device for an upward-rotating screen machine and an upward-rotating screen machine, so as to solve the problems existing in the prior art, extend the service life of the upward-rotating screen machine, and improve production efficiency.

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1

[0027] like Figure 1 As shown, this embodiment provides a vibration device for an upward-rotating screen machine, including a digital frequency-modulated vibration controller 2, an electromagnet 3, an armature 5, a mounting bracket 8, and several sets of elastic support elements 4. The electromagnet 3 is fixedly connected above the mounting bracket 8, the armature 5 is located above the electromagnet 3, and several sets of elastic support elements 4 are located outside the electromagnet 3. Each elastic support element 4 is fixedly connected to the armature 5 and the mounting bracket 8. The several sets of elastic support elements 4 are used to support the armature 5, and the armature 5 is used to fixally connect to the screen body 13. The digital frequency-modulated vibration controller 2 is connected to the electromagnet 3 and can control the electromagnet 3 to be energized or de-energized so that the electromagnet 3 attracts or releases the armature 5 and causes the screen body 13 to vibrate.

[0028] In this embodiment, the vibration device of the upward-rotating tablet sieve uses a digital frequency-modulated vibration controller 2 to adjust the magnitude and frequency of the output current input to the electromagnet 3, forcing the elastic support element 4 to bear force. This causes the sieve body 13 to vibrate downwards and upwards at high frequency under the drive of the electromagnet 3, armature 5, and elastic support element 4, generating a cyclical excitation force within the sieve body 13, thus facilitating the smooth transport of tablets. By replacing the potentiometer and rectifier devices of the upward-rotating tablet sieve with the digital frequency-modulated vibration controller 2, the digital frequency-modulated vibration controller 2 connects to interface circuits, microprocessors, power amplifier modules, and other electronic components, and transmits analog signals between them. Gain or attenuation is used to adjust the magnitude and frequency of the output current. This avoids the problems of contact oxidation, resistive film wear, and eventual poor contact caused by long-term use of potentiometers and reliance on the mechanical friction between the sliding contact and the resistive element to change the resistance value of the circuit. Furthermore, the digital frequency modulation vibration controller 2 itself has a housing, which is not affected by external environmental factors such as dust and humidity. Therefore, by using the digital frequency modulation vibration controller 2, the problems of needing to replace potentiometers and rectifiers due to the short service life, dust, and high frequency of adjustment when changing drug specifications can be effectively avoided, thus extending the service life of the equipment.

[0029] The digital frequency modulation vibration controller 2 can be selected from the SDV31 series.

[0030] In one embodiment, the elastic support element 4 is a spring sheet; the spring sheet is a manganese steel spring sheet; the manganese steel spring sheet is a plate-shaped manganese steel spring sheet; multiple sets of elastic support elements 4 are provided and are inclined around the electromagnet 3.

[0031] Setting the elastic support element 4 as a plate structure can improve the support strength between the electromagnet 3 and the armature 5. Using plate-shaped manganese steel spring sheets, compared to spring sheets made of insulating plates or carbon steel sheets (which have low mechanical strength, insufficient elastic modulus, and insufficient impact toughness, and relatively low fatigue strength leading to a shorter service life), plate-shaped manganese steel possesses extremely high elastic limit and yield strength, excellent fatigue strength, good toughness and plasticity, good magnetic permeability, good wear resistance, and a certain degree of corrosion resistance. Using plate-shaped manganese steel spring sheets improves the toughness and fatigue resistance of the spring sheets, solving the problem of downtime caused by spring sheet damage in the rotary screen due to material and quality defects.

[0032] By tilting the manganese steel spring plates, a composite vibration trajectory is generated. When the support elements are tilted, their constraint direction on the screen body's movement also tilts. The excitation force generated by the electromagnet (usually vertical or near-vertical) is decomposed into components parallel and perpendicular to the support element's axis when transmitted through the tilted support elements. The final motion trajectory of the screen body is no longer a simple straight up-and-down vibration, but becomes an elliptical or approximately circular three-dimensional composite vibration trajectory (usually containing vertical, horizontal tangential, and horizontal normal components). This composite vibration is more effective for material processing. The composite vibration trajectory (especially the horizontal tangential component) can more effectively propel the material spirally forward along the screen surface. At the same time, the vertical component provides the necessary throwing force, loosening and stratifying the material. Furthermore, the tilted support elements can more effectively guide the excitation energy generated by the electromagnet to the desired vibration direction (forming an elliptical trajectory), reducing unnecessary energy loss. Multiple sets of support points arranged around the vibrator provide more uniform and stable support, preventing the screen body from twisting or excessive local deformation under strong vibration, and improving the smoothness of equipment operation. If the support element is installed vertically, the excitation force generated by the electromagnet will mainly cause the screen body to vibrate vertically in an approximately linear manner (or vibrate in a near-vertical direction), resulting in poor material screening effect.

[0033] Furthermore, the existing technology uses a potentiometer device, a rectifier device, and ordinary spring plates to form an upward-rotating screen with a service life of about three months, while the digital frequency modulation vibration controller 1 and manganese steel spring plates used in this application can be used for up to one and a half years, thus extending the service life of the device.

[0034] In one embodiment, the vibrating device of the rotary sieve machine further includes a housing 1, an upper support 6 and a lower support 7. The lower support 7 is fixedly connected to the inner bottom surface of the housing 1, and a mounting bracket is fixedly connected to the upper part of the lower support 7. The upper support 6 is fixedly connected to the inner top surface of the housing 1. A digital frequency modulation vibration controller 2 is fixedly connected to the housing 1. The lower end of the upper support 6 is fixedly connected to the armature 5, and the upper end of the upper support 6 extends out of the housing 1 and is used to fix it to the sieve body 13.

[0035] The outer casing 1 is used to install the digital frequency modulation vibration controller 2, the upper support 6 and the lower support 7. The lower support 7 is used to install the mounting bracket 8, and the upper support 6 is used to install the armature 5 and the screen body 13.

[0036] Example 2

[0037] like Figure 2 As shown, this embodiment provides an upward-rotating tablet sieving machine, including a sieve body 13 and the upward-rotating tablet sieving machine vibration device in Embodiment 1. The sieve body 13 is used for sieving tablets.

[0038] In this embodiment, the digital frequency modulation vibration controller 2, after being powered on, adjusts the frequency on the screen to regulate the frequency and voltage of the current supplied to the electromagnetic coil, thereby controlling the vibration of the upward rotating tablet sieve. It controls the electromagnet 3 to generate a high-frequency intermittent electromagnetic force, forcing the elastic support element 4 to bear force, so that the sieve body 13 vibrates downward and upward at high frequency under the drive of the electromagnet 3, armature 5 and elastic support element 4. This causes the internal body of the sieve body 13 to generate a cyclical excitation force, which can achieve the purpose of assisting the smooth transport of tablets. The sieve body 13 is used to sieve tablets under the drive of the vibration device of the upward rotating tablet sieve.

[0039] In one embodiment, the upward-rotating sieve machine further includes a support structure for fixed connection with the bottom of the mounting bracket; the support structure includes a lifting rod 9, the movable end of the lifting rod 9 for fixed connection with the bottom of the mounting bracket, and the lifting rod 9 for adjusting the height of the mounting bracket.

[0040] The lifting rod 9 is designed to adjust the height of the entire device according to the user's height, making it convenient to use.

[0041] In one embodiment, a hand crank 10 is provided on the lifting rod 9, which is used to control the lifting and lowering of the lifting rod 9.

[0042] The lifting rod 9 is a telescopic rod structure, including a slidingly connected inner rod and an outer cylinder. The inner rod can be raised and lowered. In one optional configuration, a hand crank 10 is mounted on the outer cylinder, facilitating height adjustment of the lifting rod 9. A worm gear is fixedly connected to the output end of the hand crank 10, and a worm wheel is externally engaged with the worm gear. Both the worm gear and the worm wheel are supported by the side wall of the outer cylinder of the lifting rod 9 and are rotatably connected to the outer cylinder. A threaded hole is provided in the middle of the worm wheel, and a screw worm wheel is threaded into the threaded hole. The top end of the screw is fixedly connected to one end of the lifting rod. The motor can be replaced with the hand crank 10, and the other principles are the same as those of the hand crank.

[0043] In another alternative configuration, a motor can be fixed inside the outer cylinder. The motor's output shaft is connected to a lead screw, which is threaded with a nut. The nut is vertically slidably connected to the inner wall of the outer cylinder, and an inner rod is fixedly connected to the nut.

[0044] In one embodiment, the support structure further includes a base 11 and a plurality of casters 12. One end of the base 11 is fixedly connected to the fixed end at the bottom of the lifting rod 9, and a plurality of casters 12 capable of supporting the ground are fixedly connected to the base 11.

[0045] The casters 12 facilitate the movement of the entire device, allowing it to be used in any position. Casters with self-locking function can be selected to prevent movement during use.

[0046] Working principle:

[0047] According to the user's needs, the device is moved to a suitable position and adjusted to a suitable height by lifting rod 9; then, when separating solid particles and dust from the tablets, the digital frequency modulation vibration controller 1 is set to a certain frequency, and then the electromagnet 3 is controlled to attract and release the armature 4. The two work together to generate a certain oscillation, which drives the top sieve 13 to work.

[0048] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An upper-end-over end screen shaker vibration apparatus characterized by: The device includes a digital frequency-modulated vibration controller, an electromagnet, an armature, a mounting bracket, and several sets of elastic support elements. The electromagnet is fixedly connected above the mounting bracket, the armature is located above the electromagnet, and the several sets of elastic support elements are located outside the electromagnet. Each elastic support element is fixedly connected to the armature and the mounting bracket. The several sets of elastic support elements are used to support the armature, and the armature is used to fixally connect to the screen body. The digital frequency-modulated vibration controller is connected to the electromagnet and can control the electromagnet to be energized or de-energized so that the electromagnet attracts or releases the armature and causes the screen body to vibrate.

2. The over-the-pan shaker apparatus of claim 1, wherein: The elastic support element is a spring sheet.

3. The vibrating device for the upward-rotating sieve screen machine according to claim 2, characterized in that: The spring sheet is a manganese steel spring sheet.

4. The vibrating device for the upward-rotating sieve screen machine according to claim 3, characterized in that: The manganese steel spring sheet is a plate-shaped manganese steel spring sheet.

5. The over-the-pan end-over-end sifter machine vibration apparatus of claim 4, wherein: The elastic support elements are provided in multiple sets and are arranged at an angle around the electromagnet.

6. The vibrating device for the upward-rotating sieve screen machine according to claim 1, characterized in that: It also includes a housing, an upper support base, and a lower support base. The lower support base is fixedly connected to the inner bottom surface of the housing. The mounting bracket is fixedly connected to the upper part of the lower support base. The upper support base is fixedly connected to the inner top surface of the housing. The digital frequency modulation vibration controller is fixedly connected to the housing. The lower end of the upper support base is fixedly connected to the armature. The upper end of the upper support base extends out of the housing and is used to fix it to the screen body.

7. An over-the-roller sifter, characterized by: include: A sieve body used for sieving tablets; And the vibrating device for the upward-rotating sieve machine as described in any one of claims 1-6.

8. The rotary sieve machine according to claim 7, characterized in that: It also includes a support structure for fixed connection to the bottom of the mounting bracket; the support structure includes a lifting rod, the movable end of which is fixedly connected to the bottom of the mounting bracket, and the lifting rod is used to adjust the height of the mounting bracket.

9. The ascending-spiral screen deck machine of claim 8, wherein: The lifting rod is equipped with a hand crank, which is used to control the lifting and lowering of the lifting rod.

10. The rotary sieve screen machine according to claim 8, characterized in that: The support structure also includes a base and several casters. One end of the base is fixedly connected to the fixed end of the bottom of the lifting rod, and several casters that can support the ground are fixedly connected to the base.

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