CN102728484B - High-frequency centrifugal reverse molding machine - Google Patents

Abstract

The invention discloses a centrifugal reverse molding machine which is provided with a main circuit. The main circuit comprises a main power supply contactor C, a transformer T1, a 7T69 electron tube, a transformer T2, rectifier diodes D1, D2, D3, D4, D5 and D6, a rectifying coil, three low-heat contactors C1, three high-heat contactors C2, three rectifying circuit main contactors C3, a full-wave rectification circuit output ampere meter A1, an overcurrent protection relay I1, a capacitor filtering circuit and a high-frequency oscillating circuit. The high-frequency oscillating circuit comprises a cross-linking capacitor C1, a switch oscillating circuit, a grid ampere meter A2 and a grid bias voltage resistor R1, wherein the switch oscillating circuit comprises an electron tube H, an inductor L1, a capacitor C3 and an inductor L2. The centrifugal reverse molding machine is small in volume and low in cost.

Description

The centrifugal die reversing machine of high frequency

Technical field

The application relates to a kind of die reversing machine.

background technology

Centrifuge is to utilize centrifugal force, the one machinery of each component in the mixture of separating liquid and solid particle or liquid and liquid.Be mainly used in the solid particle in suspension and liquid to separate; By two kinds of density differences in emulsion, immiscible liquid separately again.The also admixture of gas of separable different densities of special hypervelocity channel separator; By the different feature of solid particle sinking speed in liquid of different densities or granularity, some sedimentation centrifuges also can carry out classification by density or granularity to solid particle.Centrifuge has been widely used in the departments such as chemical industry, oil, food, pharmacy, ore dressing, coal, water treatment and boats and ships.Centrifugal die reversing machine, in conjunction with centrifugal principle reverse mould, has started to be applied to industry-by-industry, but bulky due to its vibration frame of centrifugal die reversing machine in prior art, and the element of employing is complicated and expensive, causes that its volume is large and cost is high.

summary of the invention

The present invention is according to the defect of centrifugal die reversing machine existence in prior art; a kind of centrifugal die reversing machine is disclosed; comprising special, a rational shelf structure that vibrates; its volume can be accomplished minimum as much as possible; and the energy consumption of vibration also can reduce to minimum; this vibration frame has solved the two large problems of the bulky and element costliness of machine in prior art, and therefore centrifugal die reversing machine of the present invention can be widely used in the multiple industries such as jewellery, clock and watch, plastics, leather and dental hospital.

Centrifugal die reversing machine of the present invention comprises main circuit, wherein,

Main circuit comprises main power source contactor C, transformer T1 and 7T69 electron tube, and main power source contactor C and transformer T1 provide 12.6V filament voltage to 7T69 electron tube;

Main circuit also comprises transformer T2, commutation diode D1, D2, D3, D4, D5, D6 and rectification coil, transformer T2 is connected with rectification coil after being connected respectively with commutation diode D1, D2, D3, D4, D5 and D6 again, and above-mentioned transformer T2, commutation diode D1, D2, D3, D4, D5, D6 and rectification coil form three-phase full wave rectifier circuit;

Main circuit also comprises three low-heat contactor C1, three high hot joining tentaculum C2, three rectification circuit main contactor C3, full-wave rectifying circuit output current Table A 1 and overcurrent protection relay I1, three low-heat contactor C1 are connected respectively with three rectification circuit main contactor C3, three high hot joining tentaculum C2 are connected respectively with three rectification circuit main contactor C3, one end of overcurrent protection relay I1 is connected with full-wave rectifying circuit output current Table A 1, the other end ground connection of overcurrent protection relay I1;

Main circuit is connected respectively with electric capacity ventilated machine 1, control cabinet motor exhaust 2, oscillating circuit electron tube forced air cooling motor 3, L copper pipe water-cooled machine 4, centrifugal reverse mould electric rotating machine 5 and heating circle lifting motor 6;

Centrifugal reverse mould electric rotating machine 5 is connected to centrifugal reverse mould motor relay C4, and lifting motor 6 is connected to lifting motor relay C5;

Main circuit further comprises capacitor filter and high-frequency oscillating circuits;

High-frequency oscillating circuits comprises commissure capacitor C 1, switch oscillating circuit, grid current Table A 2 and grid bias resistance R1, and switch oscillating circuit comprises electron tube H, inductance L 1, capacitor C 3, inductance L 2.

accompanying drawing explanation

Fig. 1 is the main circuit diagram of centrifugal die reversing machine of the present invention.

Fig. 2 is the control circuit figure of centrifugal die reversing machine of the present invention.

The specific embodiment

Fig. 1 shows the main circuit diagram of centrifugal die reversing machine of the present invention, as shown in Figure 1,

Main circuit comprises main power source contactor C, transformer T1 and 7T69 electron tube, and main power source contactor C and T1 provide 12.6V filament voltage to 7T69 electron tube for transformer.

Main circuit also comprises transformer T2, commutation diode D1, D2, D3, D4, D5, D6 and rectification coil, transformer T2 is connected with rectification coil after being connected respectively with commutation diode D1, D2, D3, D4, D5 and D6 again, and above-mentioned transformer T2, commutation diode D1, D2, D3, D4, D5, D6 and rectification coil form three-phase full wave rectifier circuit.

Main circuit also comprises three low-heat contactor C1, three high hot joining tentaculum C2, three rectification circuit main contactor C3, full-wave rectifying circuit output current Table A 1 and overcurrent protection relay I1; three low-heat contactor C1 are connected respectively with three rectification circuit main contactor C3; three high hot joining tentaculum C2 are connected respectively with three rectification circuit main contactor C3; one end of overcurrent protection relay I1 is connected with full-wave rectifying circuit output current Table A 1, other end ground connection.

Main circuit is connected respectively with electric capacity ventilated machine 1, control cabinet motor exhaust 2, oscillating circuit electron tube forced air cooling motor 3, L copper pipe water-cooled machine 4, centrifugal reverse mould electric rotating machine 5 and heating circle lifting motor 6.Centrifugal reverse mould electric rotating machine 5 is equipped with variable-frequency governor, makes the speed governing within the specific limits of centrifugal motor.

Centrifugal reverse mould electric rotating machine 5 is connected to centrifugal reverse mould motor relay C4, and lifting motor 6 is connected to lifting motor relay C5.

Main circuit further comprises core capacitor filter and high-frequency oscillating circuits.

Capacitor filter comprises LC low pass filter.Lc low pass filter is used in power stage, and its element is the first inductance and the first electric capacity, digital power amplifier power stage, and the LC low pass filter adopting here can be divided into second order (one-level) low pass filter.LC wave filter has the advantages such as simple in structure, equipment investment is few, operational reliability is higher, operating cost is lower.

High-frequency oscillating circuits comprises commissure capacitor C 1, switch oscillating circuit, grid current Table A 2 and grid bias resistance R1, and switch oscillating circuit comprises electron tube H, inductance L 1, capacitor C 3, inductance L 2.C1 is connected to switch oscillating circuit, and grid bias resistance R1 is connected respectively with switch oscillating circuit and grid current Table A 2.

If frequency is f, when 1/f second, H connects, and the upper generation of L2 feedback voltage V 1 is delivered to the grid of H, H conducting V ' disappearance, and H ends again, produces again V ', thereby goes round and begins again, periodic duty.

This high-frequency circuit is made up of transistor AND gate frequency selective network (using LC shunt-resonant circuit here).Situation is set up in vibration: when power connection, have electric current to flow through LC oscillation circuit, produce the damped vibration that equates with resonant frequency, as without amplifying device, vibration will stop.

Here the decay that adopts high power transistor compensation resonance circuit to produce, oscillator amplitude increases, and will enter operate in saturation field, amplitude is limited, thereby maintain certain amplitude vibration.

LC shunt-resonant circuit in this high-frequency oscillating circuits comprises inductance coil L1, L3, capacitor C6, C7, C8, C9 and external signal source, said elements composition oscillating circuit parallel with one another.Under the signal excitation of different operating frequency, LC shunt-resonant circuit shows different impedance amplitude versus frequency characte and phase-frequency characteristic.In Communication Electronic Circuits, it is a kind of application element circuit very flexibly, and in the functional circuits such as amplifier, frequency mixer, sine-wave oscillator and modulation and demodulation, LC is serving as shunt-resonant circuit different roles.

The application of LC shunt-resonant circuit in Communication Electronic Circuits determined by its feature.Particularly, mainly comprise three major types, the first works in resonant condition, as frequency-selective network application, is now rendered as large resistance, the larger voltage of output under the excitation of electric current; It two is to work in off resonance state, is now rendered as perception or capacitive, together with electric capacity, meets the oscillating condition of bikini oscillating circuit with other inductance in circuit, forms sine-wave oscillator; It three is to work in off resonance state, works in a side of amplitude-versus-frequency curve or phase-frequency characteristic curve, realizes amplitude-frequency conversion, amplitude variation changes and phase inversion, phase-frequency conversion frequently frequently, forms angle modulated and demodulator circuit.

In this circuit, LC shunt-resonant circuit works in resonant condition, and for frequency-selecting, frequency is selected useful frequency component and curbed unwanted frequency component or noise from input signal.In Communication Electronic Circuits, it is the most general that LC shunt-resonant circuit is used as frequency-selective network, and it is widely used in the circuit such as high frequency small-signal amplifier, Class C high frequency power amplifier, frequency mixer.The common feature of these circuit is: LC resonant tank is not only a kind of frequency-selective network, by transformer connected mode, also plays the effect of impedance transformation, reduces amplifier tube or the load impact on resonant tank, can obtain selective preferably.

Fig. 2 shows the control circuit figure of centrifugal die reversing machine of the present invention, and its control principle is as follows:

Control circuit voltage is alternating current 220V, presses after general supply button main power source contactor electromagnet C invocation point, main power source contactor C adhesive, 1～3 ventilated machine and L copper pipe water-cooled machine 4 obtain electric, blast limit switch closure after blast is normal, the closed self-locking of main power source contactor C, main circuit power supply.

C1 and C2 are rectification circuit height thermal control contactor, and two contactors interlock by auxiliary contact, to guarantee not adhesive simultaneously.Two contactors are selected respectively by two switches, and often open and the normally-closed contact of two switches accesses respectively the electromagnetic contactor iron coil of C1 and C2.In selecting one grade, disconnect other one grade.

As shown in Figure 2, press after heating circle rising button, contactor C5 adhesive, upper lifting motor obtains electric, and heat coil rises, meanwhile, and the adhesive of C5 auxiliary contact, C1 or C2, C3, C4 obtain electric, rectification circuit, oscillating circuit and the work of reverse mould electric rotating machine.In whole control loop, be connected to water-free alarm device, the in the situation that of water-cooled machine lack of water, disconnect rectification circuit.Give the alarm simultaneously.In main circuit as being short-circuited or overcurrent, overcurrent relay I1 closure, control loop overcurrent normally-closed contact disconnects, and rectification circuit contactor disconnects simultaneously, prevents from burning circuit.

In control circuit, be also connected to temperature control and protective cover plate protection switch, guarantee to disconnect main circuit in the situation that excess Temperature or protective cover plate are opened, to protect device security and operator safety.In control circuit, go back access delay protection and order protection, to prevent maloperation and other faults.

As shown in Figure 2, press after heat coil decline button, heating collar declines, and disconnects rectified three-phase circuit and centrifugal rotation motor simultaneously, and workflow finishes.

In control circuit, be also connected to and always stop button, guarantee in case of emergency, disconnect fast all charging equipments, equipment is shut down as early as possible.

It should be noted in the discussion above that only just the present invention for convenience of explanation of above-described embodiment, and also unrestricted the present invention.Those skilled in the art, in the situation that not departing from spirit of the present invention, can make suitable modification to the present invention.And protection scope of the present invention is limited by appending claims.

Claims (1)

1. a centrifugal die reversing machine, comprises main circuit, it is characterized in that, main circuit comprises main power source contactor C, transformer T1 and 7T69 electron tube, and main power source contactor C and transformer T1 provide 12.6V filament voltage to 7T69 electron tube;

Main circuit also comprises transformer T2, commutation diode D1, D2, D3, D4, D5, D6 and rectification coil, transformer T2 is connected with rectification coil after being connected respectively with commutation diode D1, D2, D3, D4, D5 and D6 again, and above-mentioned transformer T2, commutation diode D1, D2, D3, D4, D5, D6 and rectification coil form three-phase full wave rectifier circuit;

Main circuit also comprises three low-heat contactor C1, three high hot joining tentaculum C2, three rectification circuit main contactor C3, full-wave rectifying circuit output current Table A 1 and overcurrent protection relay I1, three low-heat contactor C1 are connected respectively with three rectification circuit main contactor C3, three high hot joining tentaculum C2 are connected respectively with three rectification circuit main contactor C3, one end of overcurrent protection relay I1 is connected with full-wave rectifying circuit output current Table A 1, the other end ground connection of overcurrent protection relay I1;

Main circuit is connected respectively with electric capacity ventilated machine (1), control cabinet motor exhaust (2), oscillating circuit electron tube forced air cooling motor (3), L copper pipe water-cooled machine (4), centrifugal reverse mould electric rotating machine (5) and heating circle lifting motor (6);

Centrifugal reverse mould electric rotating machine (5) is connected to centrifugal reverse mould motor relay C4, and lifting motor (6) is connected to lifting motor relay C5;

Main circuit further comprises capacitor filter and high-frequency oscillating circuits;

High-frequency oscillating circuits comprises commissure capacitor C 1, switch oscillating circuit, grid current Table A 2 and grid bias resistance R1, and switch oscillating circuit comprises electron tube H, inductance L 1, capacitor C 3, inductance L 2.

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