CN2529705Y

CN2529705Y - Self adaptive vibration electromagnetic shaking screen

Info

Publication number: CN2529705Y
Application number: CN 02221811
Authority: CN
Inventors: 程念生
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-03-08
Filing date: 2002-03-08
Publication date: 2003-01-08
Anticipated expiration: 2012-03-08

Abstract

The utility model relates to a self adaptive vibration electromagnetic shaking screen, which adopts the electromagnet and the elastic armor plate as the shaking source of the shaking screen, and uses the DC directly as the drive power supply of the electromagnet. The loop of the electromagnet is serially connected with a separated body type switch, and one part of the separated body type switch follow the shaking screen plate of the shaking screen to synchronously move, and the other part is fixed on the machine seat of the shaking screen in stationary condition. The separated body type switch can be the mechanical contact switch or electron type switch or magnetic type switch. The utility model has the advantages that: the utility model is of a high working efficiency, low energy consumption, small noise, stable and reliable working, and long service life with the components uneasy to be damaged.

Description

The adaptive vibration hummer screen

The utility model relates to a kind of adaptive vibration hummer screen.

At present, vibratory sieve of the prior art is general to adopt two kinds of methods to vibrate, and a kind of is the mechanical type method for oscillating, and another kind is exactly to adopt the electromagnetic type method for oscillating.The mechanical type method for oscillating is to utilize the eccentric pendulum rotation of driven by motor, make screen tray produce double vibrations, its vibration frequency determined by rotating speed of motor, shortcomings such as the mechanical type method for oscillating exists mainly that noise is big, screening efficiency is low, power consumption is big, wear and tear in machines is big, part damages easily, adjusts difficulty, maintenance cost costliness; And traditional electromagnetic type method for oscillating, the power source that the general solenoid that all is the employing electromagnet maybe can generate an electromagnetic field moves as the driving screen tray, the driving power of its electromagnet or solenoid generally all is to adopt the AC power of fixed frequency or variable frequency or the pulse power as its driving power, therefore the vibration frequency of existing electromagnetic type vibratory sieve is determined by the frequency of driving power, this by driving power the vibratory sieve of definite vibration frequency, its shortcoming is that vibratory sieve generally all is difficult to adapt to the operating frequency that sets, because vibratory sieve is when oscillating movement, can produce certain inertia, this inertia is not only relevant with the structure of vibratory sieve, but also it is relevant with the load of vibratory sieve when working, because the task driven frequency of vibratory sieve is difficult to adapt with its inertia, when vibratory sieve in when work its task driven frequency and its inertia when clashing, this has not only caused the operating efficiency of vibratory sieve to reduce, but also be easy to cause vibratory sieve to damage, so existing vibratory sieve in use, and is still not ideal enough.

The purpose of this utility model is: provide a kind of high efficiency, simple in structure, not fragile, and can regulate the adaptive vibration hummer screen of its operating frequency automatically according to the s own situation of vibratory sieve and load condition with the seismic inertia that adapts to vibratory sieve.

The utility model is to constitute like this: it comprises screen tray (1), support (2), electromagnet (3) and be provided with dc source and the electric appliance control box of gauge tap (6), on support (2), be fixed with 2～6 steel spring plates (4), and the upper end of every steel spring plate (4) all be connected screen tray (1) below, electromagnet (3) is fixed on the support (2), and the moving armature a of electromagnet (3) is fixed on the support of screen tray (1) below, solenoid one end of electromagnet (3) directly is connected on the output stage of dc source E, " split type switch dimerous (5) is connected with another output stage of dc source E its other end; a part of b ' of split type switch (5) is fixed on the support that moves with screen tray (1), and another part b of split type switch (5) " is fixed on the support (2) by b ' and b by series connection; Split type switch (5) can be the mechanical type contact switches or is electronic switch or magnetic-type switch; Split type switch (5) can be for a part of b ' of being made up of Hall element induced magnet NS with by Hall element H, triode BG1, BG2, resistance R 2～R7, light emitting diode F2, voltage-stabiliser tube DW connects into another part b that on-off circuit is formed " to be formed; the positive pole of the solenoid one termination dc source E of electromagnet (3); receive the negative pole of dc source E behind the collector and emitter of its other end by BG2; the induced magnet NS that forms b ' part is installed on the support that moves with screen tray (1), forms b, and " the Hall element H in the on-off circuit of part is installed near on the support (2) at induced magnet NS place; Hall element H can be substituted by photosensitive tube GM, and induced magnet NS can be substituted by luminous tube FG; Split type switch (5) also can be made up of dry-reed tube switch GH and magnet T, dry-reed tube switch GH connects with the solenoid of electromagnet (3), magnet T is contained on the support that moves with screen tray (1), and dry-reed tube switch GH is installed near on the support (2) at magnet T place; Split type switch (5) also can be made up of the mechanical type contact switches that two metal contacts are combined into; The part that split type switch (5) is installed on the support (2) also can be connected with support (2) with adjusting holding screw (8) by a position of the switch adjustable plate (7); Every angle α that is fixedly connected on steel spring plate (4) and support (2) vertical line on the support (2) is 10 °～35 °.

Owing to adopted technique scheme, the utility model compared with prior art, the utlity model has high efficiency, simple in structure, wear-out part is few, not fragile, and can adapt according to the seismic inertia that the structure situation and the load condition of vibratory sieve are regulated its operating frequency and vibratory sieve automatically and the advantage that do not clash, operating frequency of the present utility model is not to resemble the prior art to be determined by the rotating speed of drive motors or the frequency of driving power, but the closing time and the folding time that are produced when moving with screen tray by its split type switch determine, because the closing time or the folding time of split type switch are determined by the motional inertia of two-part initial position of split type switch and screen tray, and the motional inertia of screen tray has not only reflected the driving situation in vibratory drive source, himself structure and load condition have also been reflected, therefore when the utility model when working, drive the screen tray motion of vibratory sieve during electromagnet energising adhesive, the screen tray motion drives the part motion of split type switch, another part of split type switch on making it and being fixed on support separates, thereby make the electromagnet outage, after the electromagnet outage, screen tray also can overcome elastic force continuation motion one segment distance of spring steel plate under action of inertia after, ability is past swivel motion under the return resilient force of spring steel plate, from and make split type switch in conjunction with energising, screen tray enters motion next time again, so circulation, just make screen tray produce double vibrations, thereby the inertia that is produced during the vibration of vibratory drive of the present utility model source and screen tray is difficult to clash, so the high efficiency of the utlity model has, energy consumption is low, noise is little, working stability is reliable, part is not fragile, advantages such as long service life.

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2 is the scheme of installation of split type switch of the present utility model when adopting Hall element;

Accompanying drawing 3 is the scheme of installation of split type switch of the present utility model when adopting light-sensitive element;

Accompanying drawing 4 is the scheme of installation of split type switch of the present utility model when adopting the tongue tube element;

Accompanying drawing 5 is the scheme of installation of split type switch of the present utility model when adopting the mechanical type contact switches;

Circuit theory diagrams when accompanying drawing 6 adopts Hall element for the utility model;

Circuit theory diagrams when accompanying drawing 7 adopts the tongue tube element for the utility model;

Circuit theory diagrams when accompanying drawing 8 adopts the mechanical type contact switches for the utility model.

Embodiment of the present utility model: electromagnet (3) can directly adopt the finished product of selling on the market, during making, fixing symmetrically last 2～6 steel spring plates (4) on support (2), making every angle α that is connected steel spring plate (4) and support (2) vertical line on the support (2) is 10 °～35 °, with the upper end of every steel spring plate (4) all be fixedly connected on screen tray (1) below, the structure of screen tray (1) can adopt existing screen tray structure, electromagnet (3) is fixed on the support (2), and the moving armature a that makes electromagnet (3) is fixed on the support of screen tray (1) below, solenoid one end of electromagnet (3) directly is connected on the output stage of dc source E, its other end is by connecting one by b ' and b, and " split type switch dimerous (5) back is connected with another output stage of dc source E; a part of b ' of split type switch (5) is fixed on the support that moves with screen tray (1), and its another part b " is fixed on the support (2); Split type switch (5) preferably adopts a part of b ' of being made up of Hall element induced magnet NS and by Hall element H, triode BG1, BG2, resistance R 2～R7, light emitting diode F2, voltage-stabiliser tube DW connects into another part b that the ordinary tap circuit is formed " to be formed; wherein Hall element H can adopt the model of selling on the market to be: the finished product of CS3020; BG2 can adopt the model of selling on the market to be: the finished product of MG10021; with the positive pole of the solenoid one termination dc source E of electromagnet (3); receive the negative pole of dc source E behind the collector and emitter of its other end by BG2; dc source E can adopt by bridge rectifier Q, capacitor C 3, light emitting diode F3, diode D3, resistance R 8, R9 connects into conventional current rectifying and wave filtering circuit and forms, the induced magnet NS that forms b ' part is installed on the support that moves with screen tray (1), " the Hall element H in the on-off circuit of part is installed near on the support (2) at induced magnet NS place; the power supply of this on-off circuit can be provided by dc source E ', and dc source E ' can be by transformer BT; diode D1; D2; three-terminal voltage-stabilizing pipe IC; capacitor C 1 will to form b, C2, resistance R 1 and luminous tube F1 connect into conventional regulator rectifier circuit and form; Hall element H in this on-off circuit also can be substituted by photosensitive tube GM, and its induced magnet NS can be substituted by luminous tube FG; Split type switch (5) also can be made up of dry-reed tube switch GH and magnet T, dry-reed tube switch GH is connected with the solenoid of electromagnet (3), magnet T is contained on the support that moves with screen tray (1), dry-reed tube switch GH is installed near on the support (2) at magnet T place; Split type switch (5) also can be made up of the mechanical type contact switches that two metal contacts are combined into, this metal contact switches is connected with the solenoid of electromagnet (3), and wherein a slice is contained on the support that moves with screen tray (1), will do another sheet metal to be installed on the support (2); When split type switch (5) is installed, the part that it can be installed on the support (2) is installed on the position of the switch adjustable plate (7), and this position of the switch adjustable plate (7) is fixed on support (2) and goes up and get final product by regulating holding screw (8), dc source and other electron component are installed in the electric appliance control box (6) that has gauge tap, and electric appliance control box (6) is fixing in position.

Claims

1, a kind of adaptive vibration hummer screen, it comprises screen tray (1), support (2), electromagnet (3) and be provided with dc source and the electric appliance control box of gauge tap (6), it is characterized in that: on support (2), be fixed with 2～6 steel spring plates (4), and the upper end of every steel spring plate (4) all be connected screen tray (1) below, electromagnet (3) is fixed on the support (2), and the moving armature a of electromagnet (3) is fixed on the support of screen tray (1) below, solenoid one end of electromagnet (3) directly is connected on the output stage of dc source E, " split type switch dimerous (5) is connected with another output stage of dc source E its other end; a part of b ' of split type switch (5) is fixed on the support that moves with screen tray (1), and another part b of split type switch (5) " is fixed on the support (2) by b ' and b by series connection.

2, adaptive vibration hummer screen according to claim 1 is characterized in that: split type switch (5) can be the mechanical type contact switches or is electronic switch or magnetic-type switch.

3, adaptive vibration hummer screen according to claim 1, it is characterized in that: split type switch (5) can be for a part of b ' of being made up of Hall element induced magnet NS with by Hall element H, triode BG1, BG2, resistance R 2～R7, light emitting diode F2, voltage-stabiliser tube DW connects into another part b that on-off circuit is formed " to be formed; the positive pole of the solenoid one termination dc source E of electromagnet (3); receive the negative pole of dc source E behind the collector and emitter of its other end by BG2; the induced magnet NS that forms b ' part is installed on the support that moves with screen tray (1), and " the Hall element H in the on-off circuit of part is installed near on the support (2) at induced magnet NS place to form b.

4, adaptive vibration hummer screen according to claim 3 is characterized in that: Hall element H can be substituted by photosensitive tube GM, and induced magnet NS can be substituted by luminous tube FG.

5, adaptive vibration hummer screen according to claim 1, it is characterized in that: split type switch (5) also can be made up of dry-reed tube switch GH and magnet T, dry-reed tube switch GH connects with the solenoid of electromagnet (3), magnet T is contained on the support that moves with screen tray (1), and dry-reed tube switch GH is installed near on the support (2) at magnet T place.

6, adaptive vibration hummer screen according to claim 1 is characterized in that: split type switch (5) also can be made up of the mechanical type contact switches that two metal contacts are combined into.

7, according to claim 1,3,5 or 6 described adaptive vibration hummer screens, it is characterized in that: the part that split type switch (5) is installed on the support (2) also can be connected with support (2) with adjusting holding screw (8) by a position of the switch adjustable plate (7).

8, adaptive vibration hummer screen according to claim 1 is characterized in that: every angle α that is fixedly connected on steel spring plate (4) and support (2) vertical line on the support (2) is 10 °～35 °.