CN107996745A - A kind of mechanization, which continuously makes, gushes the blue or green method of small stream fire - Google Patents

Abstract

Continuously made the present invention relates to a kind of mechanization and gush the blue or green method of small stream fire.Concrete operation step include mechanization stand green grass or young crops, water-removing, spreading for cooling, gently rub, spreading for cooling of deblocking, re-roasting, spreading for cooling, first shaping, spreading for cooling, secondary shaping, screening, the process such as color sorting and drying；Processing gained to gush small stream fire cyan pool blackish green, it is glossy glossy black, form the peculiar qualities such as soup look clear and bright green bright, fragrance is aloof from politics and material pursuits, long times of aftertaste；The tight curling of circle such as chignon, quality is homogeneous；The method of the present invention is adapted to gush the blue or green Mechanized Processing of small stream fire, and serialization cleanly production, improves and gush the blue or green standardized production degree of small stream fire, add added value of product, enhance one's market competitiveness, and meets and gushes the blue or green Trend of Industrialization of small stream fire.

Description

A method for mechanized and continuous production of Yongxi Huoqing

technical field

The invention belongs to the technical field of stir-fried green tea making technology, and in particular relates to the manufacturing technology of Yongxi Huoqing.

Background technique

Yongxi Huoqing is a kind of Yuanchaoqing green tea. The traditional processing technology of Yongxi Huoqing adopts the method of manual frying in three pots to complete the steps of greening, shaping and baking. The whole processing process takes nearly 20 hours, the labor intensity is high, and the yield is low. The quality of the finished tea depends on the quality of the tea. It is not suitable for large-scale production without technical experience. In recent years, some tea farmers have also used small-scale greening machines, kneading machines, double-pot bending machines and other single machines to complete the above processes. Although the labor intensity has been reduced and the productivity has been improved, continuous production is not possible. The overall scale is small. The difference is that the quality of the finished tea is uneven, which seriously affects the industrial development of Yongxi Huoqing.

Contents of the invention

The object of the invention is to provide a method for mechanized continuous production of Yongxi Huoqing green tea.

The specific operation steps of mechanized continuous production of Yongxi Huoqing are as follows:

(1) Grading of fresh tea leaves

Fresh tea leaves from willow-leaved tea trees in Jingxian County, Anhui during the period from Qingming to Guyu, are graded on a fresh leaf classifier to obtain graded fresh tea leaves with a size of 20×20 or less, and fresh tea leaves with 1 bud and 2 leaves leaf;

(2) Fresh leaves spread green

Under the conditions of room temperature 22-26°C and relative humidity of 55%-65%, put the graded fresh tea leaves on the spreading machine for 4 hours. The thickness of the graded fresh tea leaves is 2-5cm, and the green fresh leaves with water The weight loss rate is reduced to 68-70% or the green weight loss rate is 5.5-6%.

(3) Finished

Put green and green fresh leaves on the electric heating roller degreening machine, the feeding rate is 100kg/h, the cylinder wall temperature is 210°C, the leaf temperature is 110°C, and the degreening time is 120-180s; spread for 10 minutes, knead for 300s, among them, do not add Press lightly and knead, then press and knead again; when the leaves are soft and dark, the green leaves are obtained, and the water content drops to 60-65%;

(4) Cooling for the first time

Cool the green leaves on a cooling machine for 10-15 minutes at room temperature, and cool down to 25-30°C;

(5) Second twisting

Carry out secondary kneading for 300s on a kneading machine with a pneumatic pressurization mechanism, wherein first without pressurization and light kneading for 180s; under the condition of repressing 10kgf, pressurizing and kneading for 10s every 60 s to obtain the second kneading leaf;

(6) Cooling for the second time

At room temperature, cool the second-time rolled leaves on a cooling machine for 8-10 minutes, and cool down to 25-30°C to obtain second-time cold leaves;

(7) Re-fried

Re-fry the second-time cold leaves on the electric heating drum frying machine, the temperature of the cylinder wall is 150°C, the temperature of the leaves is 90°C, and the time is 20-25min. When the leaves are soft and dark, the re-fried leaves are obtained. At this time, the water content is 45 -50%;

(8) Let cool and soften

At room temperature, spread the re-fried leaves in a 6CHC25 multi-layer conveyor belt type continuous cooling humidifier for 120 minutes, and humidify and soften, and humidify and soften for 25-30 minutes at a relative humidity of 85-95%, and cooperate with fans to dissipate heat , get back soft leaves;

(9) Forming for the first time

The soft leaves are sent to the continuous shaper consisting of 8 60-type double-pot bending machines through the conveyor for initial shaping. The amount of leaves per pot is 5kg each time, and the initial frying is 60min. The specific temperature control is as follows:

0-20 min time period, the pot temperature is 80°C, the leaf temperature is 70°C, the frying board swing frequency is 1.7Hz, and the frying board swing is 90°;

During the 20-40 min period, the pot temperature is 75°C, the leaf temperature is 65°C, the frying board swing frequency is 1.5Hz, and the frying board swing is 85°;

During the period of 40-60 minutes, the pot temperature is 70°C, the leaf temperature is 60°C, the frying board swing frequency is 1.3Hz, and the frying board swing is 85°;

Obtain a tightly rolled bar-shaped tea base with a water content of 20-25%;

(10) Cool the tea billet until it softens

At room temperature, spread the bar-shaped tea billet in a multi-layer conveyor belt type continuous cooling and humidifying machine for 60 minutes, and humidify and soften, and humidify and soften for 25-30 minutes at a relative humidity of 85-95%, and cooperate with fans to dissipate heat , to get softened tea base;

(11) Secondary shape

The softened tea base is sent to the continuous shaping machine composed of 4 sets of 60-type double-pot bending machines through the conveyor for secondary shaping. The amount of leaves per pot is 10kg each time, and the re-frying is 4 hours. The specific temperature is controlled. as follows,

0-1h period, the pot temperature is 60°C, the leaf temperature is 55°C, the frying board swing frequency is 1.2Hz, and the frying board swing is 85º;

1-2h time period, the pot temperature is 55°C, the leaf temperature is 53°C, the frying board swing frequency is 1Hz, and the frying board swing is 80º;

During the 2-4 hour period, the pot temperature is 50°C, the leaf temperature is 48°C, the frying board swing frequency is 0.9Hz, and the frying board swing is 75º;

The finished crude tea is obtained. The finished crude tea has a round shape, delicate and heavy particles, a dark green color and a moisture content of less than 10%;

(12) Screening

The finished crude tea is sieved by a double-layer shaking sieve machine, and the large tea and broken powder are removed respectively;

(13) Color sorting

In the color sorter, remove the focal film, red film and foreign matter, etc.;

(14) drying

Send it to a chain plate dryer at a temperature of 85-90°C and a drying time of 25-40 minutes to obtain the finished product Yongxi Huoqing with a moisture content of less than 6%.

Further defined technical solutions are as follows:

In step (1), the size of the small sieve hole on the fresh leaf classifier is 20×20 mm, and the size of the large sieve hole is 35×35 mm.

In step (3), the diameter of the drum of the electrothermal drum cleaning machine is 500 mm, the height of the guide vane plate is 50 mm, the helix angle of the guide vane is 14-18°, and the helix angle of the blade is 45-55°.

In step (3), the light kneading is carried out for 300 s, among which the light kneading is performed for 180 s without pressurization first; and then pressurized and kneaded for 10 s every 60 s under the pressure of 10 kgf.

In step (4) or step (6), the cooling machine is a mesh belt cooling machine with a model of 6CHC10.

In step (5), the kneading machine is a kneading machine with a pneumatic pressurization mechanism, model 6CR-65.

In step (7), the diameter of the electric heating drum is 500 mm, the height of the guide vane plate is 50 mm, the helix angle of the guide vane is 10-12°, and the helix angle of the leaves is 30-40°.

In step (8) or step (10), the model of the multi-layer conveyor belt continuous cooling humidifier is 6CHC25; it is powered by a frequency conversion motor, and the conveying speed is 0.2-1m/min stepless adjustment to achieve controlled cooling Time to soften.

In step (9), the continuous forming machine formed by the 8 60-type double-boiler Qumai machines is composed of 8 6CCGQ-60 double-pot Qumai frying and drying machines connected in parallel;

In step (11), the continuous forming machine composed of four 60-type double-boiler Qumai machines is composed of four 6CCGQ-60 double-pot Qumai frying and drying machines connected in parallel.

In step (12), the upper layer of the double-layer shaking screen machine is a 3-mesh screen, and the lower layer is a 6-mesh screen.

Beneficial technical effect of the present invention is embodied in the following aspects:

1. The Yongxi Huoqing rounds prepared by the present invention are tightly curled like a bun, and have uniform quality; Yongxi Huoqing is dark green in color, oily and glossy, and has unique qualities such as clear and bright green soup, high aroma, and long aftertaste.

2. The process of the present invention realizes continuous and clean mechanical production, improves the standardization degree of products, increases the added value of products, and enhances market competitiveness, which is in line with the development trend of Yongxi Huoqing industrialization. The ash content of the traditional tea leaves is 4-5%, while the ash content of the present invention is 2-3%. The quality of the taste and shape is uniform; due to the low productivity of the traditional production method, the technical level of the tea workers and the differences in the understanding of the process, even if it is the same batch of fresh leaves, the quality of the tea produced by each tea worker is different. Basically, it is difficult to guarantee the uniform quality of more than 300kg of tea leaves, and it is impossible to meet the requirements of bulk orders. By using the present invention, tea farmers can sign bulk orders; because the mechanized and continuous production improves productivity, a large amount of labor, wood and charcoal resources are saved, and the overall tea production cost Reduced by 15-20%, while reducing environmental pollution and protecting forest resources in tea areas; manual review shows that the comprehensive score of the finished tea quality of the method of the present invention is not lower than that of the traditional method, especially in terms of color and appearance. Traditional production method; due to continuous mechanized production, the present invention can be used to realize unmanned production in tea production workshops, so as to prevent possible artificial secondary pollution in the tea production process.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments.

The equipment used in the following examples is described as follows:

The fresh leaf classifier is 6CFJ-70 type tea fresh leaf classifier, and the supporting motor is 0.5kW.

The tea spreading machine is 6CT-26ZD tea spreading machine, with an effective green spreading area of 26m ² , supporting motor power of 1kW and electric heating power of 3 kW.

The deblocking machine is a 6CJW50 squirrel-cage rotor type deblocking machine, the speed of the deblocking wheel is 574rpm, and the supporting power is 0.5 kW.

The electric heating drum fixing machine is a 6CLZ-50 type drum fixing machine with a matching motor power of 0.75kW and an electric heating power of 36kW.

The electric heating drum frying machine is a 6CM-400 electric heating drum frying machine with a motor power of 0.75kW and an electric heating power of 30kW.

The multi-layer conveyor belt type continuous cooling humidifier is 6CHC25 type, with a supporting power of 1 kW, which is a 3-layer conveyor belt type structure, and is equipped with a ly-020y industrial ultrasonic humidifier.

The continuous shaping machine consisting of 8 60-type double-boiler kneading machines is 8 sets of 6CCGQ-60 double-boiler kiln frying and drying machines connected in parallel, working at the same time, the diameter of the frying pan is 600mm, and the swing angle of the frying plate is 85°, 90°, the second gear Adjustable, the swing frequency of the frying plate is adjustable from 1.5 to 1.3. Electric power 1kW, electric heating power 10 kW.

The continuous shaping machine consisting of 4 sets of 60 double pot kurtose frying machine is 4 sets of 6CCGQ-60 double pot kneading kiln frying machine connected in parallel and working at the same time. Adjustable, the swing frequency of the frying plate is adjustable from 0.9 to 1.3. Electric power 1kW, electric heating power 10 kW.

The chain plate dryer is 6CHB-10 chain plate dryer, the frequency conversion motor power for transmission is 0.75 kW, the centrifugal fan motor power is 5 kW, and the electric heating power is 30 kW.

Example

The specific operation steps of mechanized continuous production of Yongxi Huoqing are as follows:

(1) Grading of fresh tea leaves

Take 1200Kg of fresh leaves of the local species "Liuyezhong" in Jingxian County, Anhui Province during the period from Qingming to Guyu, and classify them on the fresh leaf classifier with "small sieve size 20*20 and large sieve size 35*35". Fresh leaves under sieve size 20*20 are 800 Kg.

(2) Fresh leaves spread green

The room temperature is kept at 22-26°C, and the relative humidity is kept at 60%-70%. Carry out on the green stand machine, the green stand time is 4h, until the water content is 70%, or the process ends when the green stand weight loss rate is 6%, and the fresh leaves are spread with a thickness of 2-5cm.

(3) Finished

The greening is carried out on the electric roller greening machine, the diameter of the drum is 500mm, the height of the guide vane plate is 50mm, the helix angle of the guide vane is 14-18º, the helix angle of the leaf is 45-55º, the temperature of the cylinder wall is set at 210º, and the leaf temperature is set at 110º. The greening time is 120-180s, the amount of leaves thrown is 100kg/h, and the process ends when the water content is 65%.

(4) Cooling for the first time

Cool in a 6CHC10 mesh belt cooler for 10-15 minutes at room temperature until the temperature reaches 30-35°C.

(5) Second twisting

On the 6CR-65 kneading machine (equipped with a pneumatic pressure device), the second kneading is carried out for 300s, in which the light kneading is performed without pressure for 180s; then under the condition of automatic pneumatic pressure of 10kgf, kneading for 10s at intervals of 60s to obtain Twist the leaves a second time.

(6) Cooling for the second time

Cool at room temperature in a 6CHC10 mesh belt cooler for 8-10 minutes until the temperature reaches 25-30°C.

(7) Re-fried

Re-frying is carried out on the electric drum frying machine, the diameter of the drum is 500mm, the height of the guide vane plate is 50mm, the helix angle of the guide vane is 10-12º, the helix angle of the leaf is 30-40º, the temperature of the cylinder wall is set at 150º, and the leaf temperature is set at 90 º, time 20-25min, when the leaves are soft and dark in color, and the water content is 50%, the process ends.

(8) Let cool and soften

Cool on a continuous cooling machine for 120 minutes, and carry out in a 6CHC25 multi-layer conveyor belt continuous cooling humidifier, keep the relative humidity in the machine at 85-95%, and cooperate with fans to dissipate heat, and use frequency conversion motors to control the conveyor belt line The speed is to control the cooling and softening time.

(9) Forming for the first time

The tea leaves are sent to the continuous shaping machine consisting of 8 60-type double-pot bending machines through the conveyor for shaping. The amount of leaves in each pot is 5kg each time, and the frying time is 60 minutes. The specific temperature control is as follows, the first 0-20 minutes, The pot temperature is 80 ºC, the leaf temperature is 70 ºC, the frying plate swing frequency is 1.7Hz, the frying plate swing is 90 º, the first 20-40 minutes, the pot temperature is 75°C, the leaf temperature is 65 ºC, the frying plate swing frequency is 1.5Hz, the frying plate swing 85 º; 40-60 minutes, pot temperature 70 ºC, leaf temperature 60 ºC, frying plate swing frequency 1.3Hz, frying plate swing 85 º; fry until most of the tea dregs are in a tightly rolled strip shape and the water content is 25% This process ends.

(10) Cool the tea billet until it softens

Cool on a continuous cooling machine for 60 minutes, and carry out in a 6CHC25 multi-layer conveyor belt continuous cooling humidifier, keep the relative humidity in the machine at 85-95%, and cooperate with fans to dissipate heat, and use frequency conversion motors to control the conveyor belt line The speed is to control the cooling and softening time.

(11) Secondary shape

The tea leaves are conveyed through the conveyor to a continuous shaping machine consisting of 4 60-type double-pot bending machines for shaping. The amount of leaves in each pot is 10kg each time, and they are fried for 4 hours until the shape is round and the particles are tender and heavy. The process ends when the color is dark green and the water content is 10%. The specific temperature control is as follows. In the first 0-1h, the pot temperature is 60 ºC, the leaf temperature is 55 ºC, the frying plate swing frequency is 1.2Hz, and the frying plate swing is 85 ºC. 2h, pot temperature 55ºC, leaf temperature 53ºC, frying board swing frequency 1Hz, frying board swing 80 º; 2-4 hours, pot temperature 50ºC, leaf temperature 48 ºC, frying board swinging frequency 0.9Hz, frying board swing 75 o.

(12) Screening

Enter the double-layer shaking sieve machine to sieve, the upper layer has a 3-mesh screen, and the lower layer has a 6-mesh screen to remove the large tea and broken powder respectively.

(13) Color sorting

Send it to the color sorter for color sorting to remove focal flakes, red flakes and foreign matter.

(14) drying

Send it to a 6CHB-10 chain plate dryer for drying for 25-40 minutes, set the temperature at 85 ºC, and end when the water content of the tea leaves is 6%, to obtain the finished tea of Yongxi Huoqing.

Claims (10)

1. a kind of process method that mechanization makes Yongxi Huoqing continuously, adopts the fresh tea leaf of the willow leaf plant tea tree in Jing County, Anhui, it is characterized in that concrete operation steps are as follows: (1) Grading of fresh tea leaves Fresh tea leaves from willow-leaved tea trees in Jingxian County, Anhui during the period from Qingming to Guyu, are graded on a fresh leaf classifier to obtain graded fresh tea leaves with a size of 20×20 or less, and fresh tea leaves with 1 bud and 2 leaves leaf; (2) Fresh leaves spread green Under the conditions of room temperature 22-26°C and relative humidity of 55%-65%, put the graded fresh tea leaves on the spreading machine for 4 hours. The thickness of the graded fresh tea leaves is 2-5cm, and the green fresh leaves with water The weight loss rate is reduced to 68-70% or the green weight loss rate is 5.5-6%. (3) Finished Put green and green fresh leaves on the electric heating roller degreening machine, the feeding rate is 100kg/h, the cylinder wall temperature is 210°C, the leaf temperature is 110°C, and the degreening time is 120-180s; spread for 10 minutes, knead for 300s, among them, do not add Press lightly and knead, then press and knead again; when the leaves are soft and dark, the green leaves are obtained, and the water content drops to 60-65%; (4) Cooling for the first time Cool the green leaves on a cooling machine for 10-15 minutes at room temperature, and cool down to 25-30°C; (5) Second twisting Carry out secondary kneading for 300s on a kneading machine with a pneumatic pressurization mechanism, wherein first without pressurization and light kneading for 180s; under the condition of repressing 10kgf, pressurizing and kneading for 10s every 60 s to obtain the second kneading leaf; (6) Cooling for the second time At room temperature, cool the second-time rolled leaves on a cooling machine for 8-10 minutes, and cool down to 25-30°C to obtain second-time cold leaves; (7) Re-fried Re-fry the second-time cold leaves on the electric heating drum frying machine, the temperature of the cylinder wall is 150°C, the temperature of the leaves is 90°C, and the time is 20-25min. When the leaves are soft and dark, the re-fried leaves are obtained. At this time, the water content is 45 -50%; (8) Let cool and soften At room temperature, spread the re-fried leaves in a 6CHC25 multi-layer conveyor belt type continuous cooling humidifier for 120 minutes, and humidify and soften, and humidify and soften for 25-30 minutes at a relative humidity of 85-95%, and cooperate with fans to dissipate heat , get back soft leaves; (9) Forming for the first time The soft leaves are sent to the continuous shaper consisting of 8 60-type double-pot bending machines through the conveyor for initial shaping. The amount of leaves per pot is 5kg each time, and the initial frying is 60min. The specific temperature control is as follows: 0-20 min time period, the pot temperature is 80°C, the leaf temperature is 70°C, the frying board swing frequency is 1.7Hz, and the frying board swing is 90°; During the 20-40 min period, the pot temperature is 75°C, the leaf temperature is 65°C, the frying board swing frequency is 1.5Hz, and the frying board swing is 85°; During the period of 40-60 minutes, the pot temperature is 70°C, the leaf temperature is 60°C, the frying board swing frequency is 1.3Hz, and the frying board swing is 85°; Obtain a tightly rolled bar-shaped tea base with a water content of 20-25%; (10) Cool the tea billet until it softens At room temperature, spread the bar-shaped tea billet in a multi-layer conveyor belt type continuous cooling and humidifying machine for 60 minutes, and humidify and soften, and humidify and soften for 25-30 minutes at a relative humidity of 85-95%, and cooperate with fans to dissipate heat , to get softened tea base; (11) Secondary shape The softened tea base is sent to the continuous shaping machine composed of 4 sets of 60-type double-pot bending machines through the conveyor for secondary shaping. The amount of leaves per pot is 10kg each time, and the re-frying is 4 hours. The specific temperature is controlled. as follows, 0-1h period, the pot temperature is 60°C, the leaf temperature is 55°C, the frying board swing frequency is 1.2Hz, and the frying board swing is 85º; 1-2h time period, the pot temperature is 55°C, the leaf temperature is 53°C, the frying board swing frequency is 1Hz, and the frying board swing is 80º; During the 2-4 hour period, the pot temperature is 50°C, the leaf temperature is 48°C, the frying board swing frequency is 0.9Hz, and the frying board swing is 75º; The finished crude tea is obtained. The finished crude tea has a round shape, delicate and heavy particles, a dark green color and a moisture content of less than 10%; (12) Screening The finished crude tea is sieved by a double-layer shaking sieve machine, and the large tea and broken powder are removed respectively; (13) Color sorting In the color sorter, remove the focal film, red film and foreign matter, etc.; (14) drying Send it to a chain plate dryer at a temperature of 85-90°C and a drying time of 25-40 minutes to obtain the finished product Yongxi Huoqing with a moisture content of less than 6%. 2. A process method for mechanized continuous production of Yongxi Huoqing according to claim 1, characterized in that: in step (1), the size of the small sieve on the fresh leaf classifier is 20×20mm, and the size of the large sieve The hole size is 35×35 mm. 3. A process method for mechanized and continuous production of Yongxi Huoqing according to claim 1, characterized in that: in step (3), the diameter of the drum of the electrothermal drum cleaning machine is 500mm, the height of the guide vane is 50mm, The helix angle of the guide vane is 14-18°, and the helix angle of the exit blade is 45-55°. 4. A process method for mechanized and continuous production of Yongxi Huoqing according to claim 1, characterized in that: in step (3), the light kneading is carried out for 300 s, and the kneading is lightly kneaded for 180 s without pressure first; Under the condition of pressure 10kgf, pressurize and knead for 10s every 60s. 5. A process method for mechanized and continuous production of Yongxi Huoqing according to claim 1, characterized in that: in step (4) or step (6), the cooling machine is a mesh belt cooling machine, The model number is 6CHC10. 6. A process method for mechanized and continuous production of Yongxi Huoqing according to claim 1, characterized in that: in step (5), the kneading machine is a kneading machine with a pneumatic pressure mechanism, model 6CR-65 . 7. A process method for mechanized and continuous production of Yongxi Huoqing according to claim 1, characterized in that: in step (7), the diameter of the electric heating drum is 500mm, the height of the guide vane is 50mm, and the guide vane spiral The angle is 10-12°, and the helix angle of the leaves is 30-40°. 8. A process method for mechanized and continuous production of Yongxi Huoqing according to claim 1, characterized in that: in step (8) or step (10), the multi-layer conveyor belt type continuous cooling and humidifying machine The model number is 6CHC25; it is driven by a frequency conversion motor, and the conveying speed is 0.2-1m/min stepless adjustment. 9. A process method for mechanized and continuous production of Yongxi Huoqing according to claim 1, characterized in that: in step (9), the continuous forming machine composed of the eight 60-type double-pot bending machines It consists of 8 sets of 6CCGQ-60 double-pot Quma frying machines connected in parallel; in step (11), the continuous forming machine composed of 4 60-type double-pot Quma machines consists of 4 sets of 6CCGQ-60 Double-pot Quma Fried drying machines are connected in parallel. 10. A process method for mechanized and continuous production of Yongxi Huoqing according to claim 1, characterized in that: in step (12), the upper layer of the double-layer shaking screen machine is a 3-mesh screen, and the lower layer is a 6-mesh screen. mesh screen.