CN103697682A - Device and method for controlling temperature of drying kiln in capsule production system - Google Patents

Abstract

The invention relates to a device and a method for controlling temperature of a drying kiln in a capsule production system. The device comprises a plurality of temperature sensors and a drying kiln servo valve. Temperature signals collected by the temperature sensors are transmitted to a control unit, and the control unit outputs a control signal to a water supply pipe servo valve. The method includes the following steps: conducting temperature collection through the temperature sensors to obtain detection temperature; judging whether the detection temperature is smaller than a set value; increasing the openness of the water supply pipe servo valve on yes judgment and reducing the openness of the water supply pipe servo valve on no judgment. A full automatic process is adopted for temperature control of the drying kiln, a drying water pipe is connected with air conditioner return water, heat efficiency is high, additional heating is not required, heat supply quantity is greatly reduced, the requirements for energy saving and consumption reduction are met, temperature control accuracy is high and can reach +/- 0.5 DEG C, finished product capsules are even in water content, and the requirements of the finished product capsules for storage, filling rate and transportation are met.

Description

Drying kiln temperature control equipment and control method thereof in capsule manufacture system

Technical field

The present invention relates to the drying technology in a kind of capsule manufacture technique, specifically drying kiln temperature control equipment and control method thereof in a kind of capsule manufacture system.

Background technology

Capsule for medicine production line is the system of producing capsule for medicine, comprise drag running unit, tail platform unit, under drag running unit, the unit of pawling, oiling control module, littlely pull out unit, pull out unit, disc unit and dip in glue control module greatly, above-mentioned each unit is coordinated to control.Drying tunnel in process control procedure (being drying kiln) bake out temperature all adopts electrical heating, power consumption is large, temperature control deviation is large, control accuracy low (± 2 ℃), control ratio to capsule shaping is more difficult, all by experience, regulate, the water content of finished capsule product is inhomogeneous, and the storage of finished capsule product, filling upper probability and transportation are had to certain influence.Energy consumption is large simultaneously, increases production cost and labour intensity, cannot meet requirement energy-conservation, consumption reduction.

At present, can overcome in the capsule manufacture system of above-mentioned defect drying kiln temperature control equipment and control method thereof and there is not yet report.

Summary of the invention

For existing capsule for medicine production line, have that bake out temperature deviation is large, labour intensity is large, cannot meet and cannot meet energy-conservation, weak point such as consumption reduction requirements etc., the technical problem to be solved in the present invention is to provide that a kind of temperature is controlled accurately, finished capsule product water content evenly and meet drying kiln temperature control equipment and control method thereof in the capsule manufacture system of energy-conservation, consumption reduction requirement.

For solving the problems of the technologies described above, the technical solution used in the present invention is:

Drying kiln temperature control equipment in a kind of capsule manufacture system of the present invention, comprises a plurality of temperature sensors and drying kiln servo valve, and wherein the temperature signal of temperature sensor collection is delivered to control module, and control module outputs control signals to supply channel servo valve.

Described drying kiln supply channel is connected with air-conditioning water return pipeline.

Control module in described control module and capsule manufacture system shares.

The control method of drying kiln temperature control equipment of the present invention, comprises the following steps:

By temperature sensor, carry out temperature acquisition, obtain detected temperatures;

Judge whether detected temperatures is less than setting value;

If detected temperatures is less than setting value, increase the aperture of supply channel servo valve.

If detected temperatures is not less than setting value, reduce the aperture of supply channel servo valve.

The present invention has following beneficial effect and advantage:

1. the present invention controls and adopts full-automatic process the temperature of drying kiln, dries water pipe and is connected to air-conditioning backwater, and the thermal efficiency is high, does not need additional heat, has greatly reduced heating load, meets energy-saving and cost-reducing requirement.

2. the present invention is without Artificial Control, and temperature control precision is high, can reach ± 0.5 ℃, and the water content of finished capsule product is even, meets the storage of finished capsule product, filling upper probability and movement requirement.

Accompanying drawing explanation

Fig. 1 is capsule manufacture system electrical structured flowchart under drying kiln temperature control equipment of the present invention;

Fig. 2 is drying kiln temperature control equipment block diagram of the present invention;

Fig. 3 A is drying kiln temperature acquisition schematic diagram of the present invention ();

Fig. 3 B is drying kiln temperature acquisition schematic diagram of the present invention (two);

Fig. 3 C is drying kiln supply channel servo valve control schematic diagram of the present invention ();

Fig. 3 D is drying kiln supply channel servo valve control schematic diagram of the present invention (two);

Fig. 3 E is drying kiln supply channel servo valve control schematic diagram of the present invention (three);

Fig. 3 F is drying kiln air-blower control schematic diagram of the present invention ();

Fig. 3 G is drying kiln air-blower control schematic diagram of the present invention (two).

Fig. 4 is the dry kiln temperature degree control flow chart of the sound of a roaring fire in the inventive method.

The specific embodiment

As shown in Figure 1, capsule manufacture system, comprise control module, motion control part and technology controlling and process part, wherein motion control on partly having, drag unit, tail platform unit, under drag unit, the unit of pawling, central cassette unit, oiling unit, oiling planker unit, littlely pull out unit, pull out unit, disc unit and dip in glue control module greatly, the input of control module is connected to the signal that position sensor and angular encoder gather, and output is exported corresponding control instruction to the corresponding units in above-mentioned motion control part; Technology controlling and process partly has glue blending device, dips in adhesive dispenser and drying kiln device, and the input of control module is connected to viscosity and takes into account the signal that temperature collect module gathers, and output output control instruction is to the related device in above-mentioned technology controlling and process part.

As shown in Figure 2, drying kiln of the present invention (being drying tunnel) temperature control equipment comprises a plurality of temperature sensors and supply channel servo valve, wherein the temperature signal of temperature sensor collection is delivered to control module, control module outputs control signals to drying kiln servo valve, and this supply channel servo valve is located on drying kiln supply channel; Drying kiln supply channel is connected with air-conditioning water return pipeline.

As shown in Figure 4, the inventive method has following steps:

By temperature sensor, carry out temperature acquisition and obtain detected temperatures;

Judge whether detected temperatures is less than setting value;

If detected temperatures is less than setting value, open supply channel servo valve;

If detected temperatures is not less than setting value, close supply channel servo valve.

As shown in Fig. 3 A, 3B, in the present invention, by 6 Pt100 RTD collecting temperature signals, be located at respectively in the supply channel (being equivalent to heating installation) of 6 drying kilns, each supply channel is connected with air-conditioning water return pipeline, utilize air-conditioning return water temperature (38～40 ℃) to deliver in drying kiln water lines, for drying, provide thermal source, kiln temperature fluctuates within the scope of ± 0.5 ℃.In order accurately to control output, the present embodiment is separately installed with supply channel servo valve in each supply channel.

As shown in Fig. 3 C～3E, it is supply channel servo valve control schematic diagram in the present invention.In the present embodiment, drying kiln (being drying tunnel) temperature control equipment is to control by servo valve YV13, YV14, YV15, YV16, YV17, YV18, YV19, YV20, YV21, YV22 open amount; By each drying kiln Current Temperatures and design temperature, compare, system utilizes PID control model by temperature difference amount, temperature offset amount, and temperature variation is adjusted and is drawn the pid parameter of controlling servo valve open degree, the corresponding servo valve of each drying kiln is converted to analog output signal (0-10V) according to corresponding pid parameter by system module and controls servo valve open degree, and the heat of water lines is controlled at temperature in design temperature claimed range by changes in flow rate.

As shown in Fig. 3 F, 3G, in the present embodiment, drying kiln control device is by drying tunnel air-blower control knob SA10, and the AC motor drive UF19～UF28 of relay K A19, KA21, KA23, KA25 and the operation of control blower motor of control drying tunnel blower motor M19～M28 etc. forms.

When drying tunnel blower fan will start continuous operation, (not controlled by main frame start-stop) rotation control button SA10 connects to the position of I, make relay K A19, KA21, KA23, KA25 be subject to electric adhesive, make in check AC motor drive UF19～UF32 output setpoint frequency power supply, drive blower motor M19～M28 to start operation continous blowing.

When drying tunnel blower fan will carry out host computer control (host-initiated, drying tunnel air-supply starts; Main frame stops, drying tunnel air-supply stops), turn knob SA10 connects to the position of II, now when host-initiated, KA1 adhesive, make relay K A19, KA21, KA23, KA25 be subject to electric adhesive, make in check AC motor drive UF19～UF28 output setpoint frequency power drives blower motor M19～M28 start operation air-supply;

When main frame is out of service, KA1 dead electricity disconnects, in check relay K A19, KA21, KA23, KA25 and in check AC motor drive UF19～UF28 stop output, make blower motor M19～M28 dead electricity out of service, so far reach the main frame operation object of control automatically.

When drying tunnel wants out-of-blast, by control handle cycle original position (0), relay K A19, KA21, KA23, KA25 dead electricity disconnect, and blower motor AC motor drive UF19～UF28 controls cut-out, blower motor M19～M28 dead electricity shuts down, and body, cap drying tunnel are out-of-blast.

The temperature of body cap insulation adhesive tape is that RV2 controls by the adjuster RV1 that is arranged on head face case both sides, regulates respectively adjuster RV1, and the position of RV2 upper knob is the heating power of capable of regulating insulation adhesive tape, thereby reaches the object of adjusting insulation adhesive tape temperature.

Claims (5)

1. drying kiln temperature control equipment in a capsule manufacture system, it is characterized in that: comprise a plurality of temperature sensors and drying kiln servo valve, wherein the temperature signal of temperature sensor collection is delivered to control module, and control module outputs control signals to supply channel servo valve.

2. by drying kiln temperature control equipment claimed in claim 1, it is characterized in that: described drying kiln supply channel is connected with air-conditioning water return pipeline.

3. by drying kiln temperature control equipment claimed in claim 1, it is characterized in that: the control module in described control module and capsule manufacture system shares.

4. by the control method of drying kiln temperature control equipment claimed in claim 1, it is characterized in that comprising the following steps:

By temperature sensor, carry out temperature acquisition, obtain detected temperatures;

Judge whether detected temperatures is less than setting value;

If detected temperatures is less than setting value, increase the aperture of supply channel servo valve.

5. by the control method of drying kiln temperature control equipment claimed in claim 4, it is characterized in that:

If detected temperatures is not less than setting value, reduce the aperture of supply channel servo valve.

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