CN104738220A - Instant spraying wetting compacting method for compression type Pu'er cooked tea - Google Patents

Abstract

The invention discloses an instant spraying wetting compacting method for compression type Pu'er cooked tea. The method comprises the following steps: adding water, softening by steam, compacting and baking. The water adding process is characterized in that an automation spraying/water adding apparatus is used for spraying hot water at 60-80 DEG C in a mist state on the upper surface of the tea material in a tea steaming barrel without an infiltration process, steam softening is carried out for 5-6 seconds after water is added or spraying wetting is carried out when steam softening is carried out, the baking time is shortened to 3 hours after compacting. The production period is greatly shortened by the technology, the processing time is shortened by 50-60%, the production process is controllable, the quality and the stability of the products with different batches are consistent, the product is safe and healthy, and accords with the requirements of a standard production. The product keeps the Pu'er tea quality. The method has the advantages of shortened production period, reduced cost, increased efficiency, standard processing technology and simple operation, and can be widely used for compression type Pu'er cooked tea large scale and standardization production.

Description

The instant spraying of compacting pressing Pu'er cooked tea is made moist drawing method

Technical field

The invention belongs to the forming processing technology field that ripe tea is pressed in Pu'er, particularly relate to " instant compacting of making moist of spraying " technique of a kind of compacting pressing Pu'er cooked tea, mainly for the improvement to tidewater operation in compacting pressing Pu'er cooked tea preparation process.

Background technology

The health care good along with Pu'er tea and reserve value are constantly familiar with by consumer and are accepted, and Pu'er tea obtains the favor of domestic and international consumer gradually, and output have also been obtained quick raising.2008, Pu'er tea output was 5.28 ten thousand tons, accounted for 31.1% of the annual Tea Production total amount in Yunnan Province.In recent years, yunnan puer tea producing region makes full use of the advantages such as Yunnan Tea district tea tree breed aboundresources, ecological environment is superior, Pu'er tea process technology is ripe, have developed row Pu'er compressed tea product, product release, to domestic and international market, obtains liking and approving of consumers in general.

Pu'er compressed tea is that first output meets the Puer Bulk Tea of quality requirements by Yunnan high-quality large leaf solar dried green tea through work flows such as pile-fermentations, then carry out tidewater, infiltration and steam softening after, be pressed into difform agglomerate tea.Pu'er compressed tea is formed through autoclave at high temperature is moulding by Puer Bulk Tea, and profile is rectified, degree of tightness appropriateness, has Pu'er compressed tea of the Tuo tea in bowl mortar shape, rectangular brick tea, foursquare side's tea, the cake tea of patty, cordate tight tea and other special appearance.Pu'er compressed tea profile is neat, and spill face evenly aobvious milli, color and luster is glossy, has the qualitative characteristics that strong lasting, the soup look glow of Chen Xiang, mellow time of flavour are sweet, root of Ford Metalleaf is brown.Under suitable storage condition, there is the quality characteristic of more Chen Yue perfume (or spice).

Though Pu'er compressed tea shape develops into variation, but compressed tea continues to use following conventional process flow in process of production always, that is: first tidewater, infiltration, proportioning is compressing again, finally smoke, pack (" Crop Diseases in Yunnan science and technology " the 01st phase author: Gu Honghui in 2011), technological process as shown in Figure 1, wherein:

Tidewater is also known as watering, and object impels Pu'er cooked tea to suppress tight knot, promotes soup look, make flavour Hui Tian; Tidewater quantity will be suited measures to local conditions, and depending on air humidity size, add water 4-8% as Menhai rainy season, and dry sky adds water 6-10%, and rear accumulation infiltration more than 4 hours is mixed in watering thoroughly, can pay system.Raw material after tidewater can not have deterioration, can not produce black mould, taste etc. is turned sour in acid; Next increases even heap feed moisture content, and tea bar is softened, and prevent tealeaves broken when suppressing, should consider tidewater according to tealeaves is always tender during tidewater, rainy season cuts down according to the circumstance.Tidewater average moisture content is that about 13-17% is advisable.Adopting after this tidewater should steam pressure immediately, otherwise tealeaves may owing to not having infiltrating time, and the product causing the raw material at each position to suppress causes larger difference in moisture content, net content etc.Meanwhile, do not have infiltrating time, the product of its compacting does not reach particular requirement in pie, outward appearance, elasticity etc.

The position of tide hypervolia, the ripe cake baking time after compacting is long, tealeaves yellow maturity, and fragrance reduces.Tidewater amount is uneven, easily causes to smoke uneven, thus causes portioned product to go mouldy.Very little, the food value of leaf is deliquescing not easily for tidewater amount, and shaping comparatively difficulty, easily produces phenomenons such as lacking limit, loosening in surface portion position, comes off.

The main purpose of ripe tea tidewater, have better cohesiveness for impelling when compressing between tealeaves bar rope, the degree of packing in cake face and the aesthetic property in cake face after guarantee tea-leaf forming, be convenient to transport and the storage in later stage, but above traditional handicraft, have produce consuming time long, and the factor such as many technological parameters are uncontrollable, specific as follows:

1. the impact of tidewater operation human factor is comparatively large, and employee rule of thumb tidewater has individual difference, and tidewater amount is uncontrollable, and tidewater is uneven, piles sub each region moisture content deviation large;

2. watering after infiltrating time longer, more than about 4 hours put infiltration, seriously delay manufacturing schedule, extend the production cycle, and due to factors such as impregnation process moisture volatilize naturally, cause moisture uncontrollable;

3., after the compacting of ripe tea tidewater, because moisture is high, baking time reaches 13 hours, smokes excessive cycle, take drying room resource and energy resource consumption serious;

4. hand labor intensity is comparatively large, and technological process is loaded down with trivial details, not easily realizes online production etc.

But, though above processing technology is the prevailing technology of current Pu'er compressed tea, adopt by even whole Pu'er tea circle of numerous manufacturer, apply.But many drawbacks that this technique exists have a strong impact on and govern the expansion of Pu'er tea output:

1. labour intensity is large: tidewater operation needs manually to sprinkle water turning, mixing.

2. human factor is comparatively large, and tidewater is uneven: tidewater operation is difficult to reach even tidewater, and its main cause has:

(1) watering time the water yield control on human factor larger;

(2) be difficult to ensure that the tealeaves at each position all reaches uniformity when turning, mixing;

(3) in impregnation process, by the impact of ambient wind velocity, temperature, humidity etc., the windage causing each position Measuring Moisture Content of Tea in impregnation process is not identical, so that at follow-up title tea, smoke, make a difference in net content etc., the larger tealeaves of some water content is being made after product puts goods on the market, and as easy as rolling off a log generation is gone mouldy.

3. food sanitation safe degree is not high: at present, and Pu'er cooked tea is before compressing, and due to needs tidewater, infiltration, and this two procedures is all difficult to realize mechanization, therefore substantially for manual operation completes, thus, food sanitation safe standard is difficult to be protected.

4. operation is consuming time longer: after ripe tea tidewater, all needs to make it naturally infiltrate and just can be pressed for more than 4 hours, not only extend the process-cycle of compressed tea, and occupy factory resource in a large number, add production cost.

5. online production cannot be realized: along with the continuous increase of Pu'er compressed tea output and the good development in market, each manufacturer is in order to save labor cost, increase production efficiency, all carrying out oneself industrialization, mechanization production pattern, but because Pu'er cooked tea exists the infiltrating time of more than 4 hours after tidewater, therefore cannot online production be realized, become the maximum bottleneck of pipelining.

6., after ripe tea tidewater compacting, because moisture is high, baking time reaches 13 hours, smokes excessive cycle, take drying room resource, and energy resource consumption is serious.

Visible existing compacting pressing Pu'er cooked tea pressing the production of molding procedure, processing technology exists manyly needs improvements.

Summary of the invention

In view of many drawbacks that above compacting pressing Pu'er cooked tea exists in traditional tidewater technique, the object of this invention is to provide and a kind ofly produce instant spraying that is short, compacting pressing Pu'er cooked tea that technological parameter is controlled consuming time and to make moist drawing method.

The instant spraying of compacting pressing Pu'er cooked tea provided by the present invention is made moist drawing method, can comprise the following steps:

A kind of instant spraying of compacting pressing Pu'er cooked tea is made moist drawing method, the tealeaves siccative comprised namely compacting pressing Pu'er cooked tea raw material is prepared carries out tidewater, steam softens, suppress and smoke process, in the present invention, described tidewater process is completed by automated spray tidewater device, to be the hot water of 60-80 DEG C by temperature be vaporificly is sprayed to the tealeaves siccative upper surface steamed in tea bucket, fountain height is the 1%-3% of tealeaves siccative quality, without the need to the impregnation process after tidewater, even steaming tea bucket is carried out steam with tidewater process after tidewater process to soften 5-6 second simultaneously, control steam and soften the water content of rear tealeaves not higher than 10wt%, baking time after compacting is no more than 5 hours.。

The instant spraying of described compacting pressing Pu'er cooked tea is made moist in drawing method, and the spray rate that hot water is vaporific sprinkling by spray nozzle device is less than 30Kg/h, and be preferably 8-12g water/5 second, spraying time is no more than 8s, and mist particle diameter size is 20-100 μm.Steam is softening refers to that steam tea bucket is softened by steam on 110-116 DEG C of steaming Tea Service.

Concrete, the instant spraying of the described compacting pressing Pu'er cooked tea drawing method that makes moist comprises the following steps:

1) get the raw materials ready: be ready to prepare the raw material required for compacting pressing Pu'er cooked tea, namely spread the tealeaves siccative of point, core tea or lid tea three kinds of different models;

2) assorted barrelling: as required, loads the tealeaves siccative of different model by product design requirement and steams in tea bucket;

3) fly in the tealeaves siccative upper surface steaming tea bucket is placed;

4) spraying tidewater: hot water is sprayed onto in vaporific the tealeaves siccative upper surface steamed in tea bucket in 8s;

5) tea is steamed: steam on Tea Service with being placed on by the steaming tea bucket after step 4) process, at 110-116 DEG C, steam 5-6 second, control water content of tea is 7wt%;

6) type is made in pack: steamed tealeaves in steaming tea caddy is put into cloth bag or mould, manually the tealeaves in cloth bag is kneaded into required form (as cheese, brick shape, a small bay in a river shape etc.);

7) compressing: cloth bag or mould that tealeaves is housed to be placed on pressure tea machine and to be pressed;

8) spreading for cooling, solution bag are dried: the pressed tea spreading for cooling under refrigeration fan or natural conditions after compressing is about 10-20 minute, more by hand sack is removed;

9) smoke: smoked in the drying room of 40-80 DEG C by pressed tea, the time is 3 hours, obtains compacting pressing Pu'er cooked tea.

Also can by step 4) and 5) operate simultaneously-namely tide namely steam: steaming tea bucket is placed on and steams on Tea Service, according to quantity hot water is sprayed onto in vaporific the tealeaves siccative upper surface steamed in tea bucket in 8s, steam tea bucket simultaneously and steam at 110-116 DEG C.

In the above method, step 2) in spread point, core tea, lid tea can in quality with the ratio assembly of 15:43:42.

Spraying tidewater operation in step 4) is completed by automated spray tidewater device, automated spray tidewater device comprises constant temperature control water unit, compressed air delivery unit, nozzle unit and central control unit, the constant temperature control water unit temperature that one of provides temperature constant within the scope of 60 DEG C-80 DEG C and constant pressure are at the hot water of 3bar, compressed air delivery unit provides the compressed air of constant pressure position 7bar, hot water and compressed air mix in nozzle unit, control mixing water gas blowout go out to be formed spray water and described tidewater by central control unit.

Step 5) is steamed tea operation and is adopted existing steaming tea equipment to complete, and jet chimney installs solenoid valve for steam additional.In tide in sight and steaming mode, this solenoid valve for steam is connected with the central control unit in automated spray tidewater device.

The instant spraying of the compacting pressing Pu'er cooked tea each parts in automated spray tidewater device used that to make moist in drawing method are:

Described constant temperature control water unit comprises water source, water tank, thermostat, filter, pressue device and aqueduct, water tank is received in water source after filter, water tank keeps water temperature at 60 DEG C-80 DEG C under the control of thermostat, water tank water outlet boosts to constant pressure 3bar under the effect of pipeline supercharging pump, enters nozzle unit through aqueduct;

Described compressed air delivery unit comprises air-source, pressue device, source of the gas process two element and gas pipeline, air-source is provided by air compressor machine, obtain the compressed air of constant voltage 7bar through pressue device, then connect source of the gas process two element and be connected to nozzle unit through gas pipeline; Described source of the gas process two element is made up of filter and pressure-reducing valve;

Described nozzle unit comprises nozzle, flow control valve, Pressure gauge and conveyance conduit, and flow control valve and Pressure gauge are arranged on conveyance conduit, the whole terminating nozzles of conveyance conduit; Described nozzle unit is one or more;

Described central control unit comprises nozzle magnetic valve and electromagnetic valve of gas circuit, is arranged on respectively on aqueduct and gas pipeline.

In above-mentioned automated spray tidewater device, spray amount sets according to different tea product, and combine pressure tea equipment line body, disposable single spraying head or many shower nozzles can concentrate atomized water spray, reach Measuring Moisture Content of Tea content requirement, also decomposable asymmetric choice net single spraying head discontinuity repeatedly atomized water spray, coordinate with streamline body precision, do not affect the normal operating steaming link, ensure that tidewater, steaming tea step are synchronous with production line body, coordinate automatic pressure tea equipment, the streamline compacting realizing compacting pressing Pu'er cooked tea is produced, and device is easily assembled, dismantles and moved simultaneously.

The invention provides and a kind ofly produce instant spraying that is short, compacting pressing Pu'er cooked tea that technological parameter is controlled consuming time and to make moist drawing method.Method of the present invention is compared with conventional method; have that product quality is more stable, process time shortens 50%-80%, production cost reduction, efficiency raising, processing technology specification, advantage simple to operate, scale and the standardization that can be widely used in compacting pressing Pu'er cooked tea are produced.The present invention has the following advantages:

1. alleviate labour intensity, ban in conventional machining process the operation of turning mixing of sprinkling water;

2. eliminate the otherness that traditional tidewater causes, improve the uniformity of tidewater, reduce tidewater manual intervention degree, ban infiltrating time, the situation that the moisture loss caused because of environment temperature, humidity, demeanour etc. when avoiding infiltration is uneven, improves the moisture content uniformity of same batch of Pu'er compressed tea.

3. improve food sanitation safe: new technological flow and technical scheme change the mode of traditional tidewater, completely avoid artificial direct control, thus make food sanitation safe more secure.

4. shorten, banned infiltrating time, shorten the process-cycle of Pu'er compressed tea, reduce the occupancy of factory building resource.

5. after tidewater being steamed tea, the water content control of tealeaves is reduced levels (being no more than 10wt%), under the prerequisite not reducing traditional handicraft product quality, baking time is shortened to 3-5 hour/batch.

6. achieve the pipelining pattern of automation, mechanization, reduce labour intensity, add productivity effect, make the production process of Pu'er compressed tea, process, product form, product quality reach uniformity and standardization.

Below in conjunction with specific embodiment, the present invention is described in further details.

Accompanying drawing explanation

Fig. 1 is the traditional processing technology flow process of Pu'er compressed tea

Fig. 2 is the technological process of production of Pu'er of the present invention compressed tea

Fig. 3 is the structural representation of a kind of tealeaves spraying tidewater device in the compact tea production technology of Pu'er of the present invention

Detailed description of the invention

In view of compacting pressing Pu'er cooked tea comes with some shortcomings in traditional tidewater technique, for removing or reduce manual intervention degree in traditional handicraft, thus realize mechanization or automation manipulation, the present inventor has carried out breaking through conventional exploration to tidewater technique, by design and implementation " experiment of warm water tidewater ", " experiment of sealed steam humidification " and " the wet softening experiment of high temperature speed ", compacting pressing Pu'er cooked tea different phase and carry out the further investigation of tidewater technique in different ways, eventually through comparing, analyze and adjustment, determine the technical scheme based on " the wet softening experiment of high temperature speed ", this solution simplifies the tidewater technique of compacting pressing Pu'er cooked tea, compacting pressing Pu'er cooked tea " namely namely tide presses " is become a reality, product can also meet local flavor and the quality of classical compacting pressing Pu'er cooked tea simultaneously.

Technical solution of the present invention is described in detail below with embodiment.Embodiment is implemented under premised on technical solution of the present invention, gives detailed embodiment and concrete operating process, and it will contribute to understanding the present invention, but protection scope of the present invention is not limited to following embodiment.

Capital equipment used is as steamed tea bucket, steaming Tea Service, pressing tea machine, drying equipment etc., prepared by all commercially available or conveniently techniques and methods.

The unit that may contact with tealeaves in equipment, need ensure the requirement meeting food sanitation safe with material.

Production environment and operating process are carried out arranging and operating according to food hygiene regulation.

The instant spraying of embodiment, compacting pressing Pu'er cooked tea is made moist drawing method

Instant spraying see the compacting pressing Pu'er cooked tea shown in Fig. 2 is made moist compacting (" namely namely tide presses ") flow process, includes following steps (listed sequence number distinguishes step for convenience, not natural representative's operating sequence):

1) get the raw materials ready: get out the raw material (or claiming tealeaves, dry tea, tealeaves siccative) prepared required for compacting pressing Pu'er cooked tea.Tealeaves siccative for Pu'er cooked tea has three kinds of different models, be divided into and spread point, core tea and lid tea (lid tea is divided into shuttle limit tea, cover tea and spreads end tea), tealeaves siccative can be selected on demand, and the present embodiment only provides a kind of example, and present invention process is not by the impact of tealeaves siccative change.

2) assorted barrelling: as required (at the bottom of the mouthfeel required by ripe tea finished product, soup look, leaf etc.), the siccative of different model being spread point, core tea, lid tea loads in steaming tea bucket from top to bottom in proportion, ratio can proportioning as required, is 15:43:42(mass ratio in the present embodiment).Identical with end product quality for conventional 357g(tealeaves siccative) the ripe cake tea in Pu'er, the dosage specific to often kind of different dry tea is respectively, and spreads sharp tea 53g, core tea 154g, spreads end tea 50g, shuttle limit tea 50g, cover tea 50g.

3) fly in placement: in steaming tea bucket, tealeaves siccative upper surface flies in placing.Inside fly to be the papery of the tape identification meeting food standard or the small pieces of other quality, be together compressed on tea cake surface when tealeaves is suppressed, as the identify label of this cake tealeaves, to there is height anti-fake effect.

4) to spray tidewater: be that the 10g hot water (for 357g cake tea) of 60-80 DEG C is sprayed onto on the upper surface of the Pu'er cooked tea siccative steamed in tea bucket by temperature, spray rate is 8-12g water/5 second (to adapt to steam between the tea time preferably 10g water/5-6 second), and spraying time is 2-8 second (to adapt to steam between the tea time preferably 10g water/5-6 second).The fountain height of this step hot water generally accounts for 1%-3% of cake tea siccative quality, this step can make upper surface tealeaves siccative evenly, fully absorb moisture, in addition, tealeaves siccative upper surface uniform wet, to make moist, steam tea bucket inwall and have a small amount of condensate water, spraying can not tealeaves siccative, in fly to blow, affect finished product cake tea exterior quality;

5) tea is steamed: be placed on by the steaming tea bucket that the tealeaves after making moist of spraying is housed and steam on Tea Service, steam 5-6 second at 110-180 DEG C, this step can make lower surface tealeaves soften; After this example controls to steam tea, water content of tea is at about 7wt%, is advisable to be no more than 10%.

6) type is made in pack: steamed tealeaves in steaming tea bucket is put into cloth bag, manually the tealeaves in cloth bag is kneaded into required shape (as cheese, brick shape, a small bay in a river shape etc.);

7) compressing: to be placed on by the tealeaves carrying out shape on pressure tea machine and to suppress, in pressure tea process, the cloth bag that tealeaves is housed should be placed on the middle of pressure tea machine mould, and ensure that the pie of suppressing out is neat, outward appearance is beautiful;

8) spreading for cooling, solution bag are dried: the tealeaves suppressed spreading for cooling under refrigeration fan or natural conditions is about 10-20 minute, more manual releasing by sack is used for smoking;

9) dry under: smoke in drying room pressed tea being carried to 40-80 DEG C, this routine baking time is 3 hours, visual water content of tea and baked temperature adjustment baking time, be usually no more than 5 hours, obtain compacting pressing Pu'er cooked tea.

Make moist in drawing method in the instant spraying of above-mentioned compacting pressing Pu'er cooked tea, steam tea after can taking first tidewater, or the mode of namely spraying i.e. steaming (tidewater carries out with steaming tea simultaneously) all can reach identical effect of making moist, and makes tealeaves make moist evenly, softening rapidly, reach the technological requirement of compacting link.

In the present invention, the spraying tidewater operation in step 4) can be completed by automated spray tidewater device.Such as, automated spray tidewater device as shown in Figure 3 can be used.It is made up of five construction units: constant temperature control water unit, compressed air delivery unit, nozzle unit, central authorities' (equipment) control unit and conveyance conduit (line), structure and the annexation of each construction unit are as follows: constant temperature control water unit: comprise water source, water tank, thermostat, filter, pressue device and aqueduct, wherein, water tank is received in water source after filter, water tank keeps water temperature at 60 DEG C-80 DEG C under the control of thermostat, water tank (constant temperature water tank) water outlet boosts to constant pressure 3bar under the effect of pressue device (pipeline supercharging pump), nozzle unit is entered through aqueduct, final ejection forms spray water.

Compressed air delivery unit: comprise air-source, pressue device, source of the gas process two element and gas pipeline, wherein, air-source is provided by air compressor machine, the compressed air of constant voltage 7bar is obtained through pressue device, (source of the gas process two element is made up of filter and pressure-reducing valve to connect source of the gas process two element again, filter is used for filtering compressed air, and pressure-reducing valve is used for reducing pressure to compressed air), and be connected to nozzle unit through gas pipeline.

Nozzle unit: comprise nozzle, flow control valve, Pressure gauge and conveyance conduit, wherein, flow control valve (for regulating compressed-air actuated flow) and Pressure gauge (for monitor air pressure, pressure should at more than 5bar) be installed in series on conveyance conduit, the whole terminating nozzles of conveyance conduit.Nozzle unit separately establishes light eye (Photoinduction device) for responding to the position of steaming tea bucket, induced signal is transferred to central authorities' (equipment) control unit.

The quantity of nozzle unit sets according to the diameter and tea amount that steam tea bucket, each nozzle unit is communicated with pressurization aqueduct, compressed air gas pipeline respectively, the moisture that adds of single-nozzle is less than 30Kg/h, the best sprays the preferred 10g of 8-12g(for every 5 seconds) water, mist particle diameter size is 20-100 μm, requirement jeting effect is good, and spray regime adopts malleation to spray, and the jetting height of nozzle can regulate.

Central authorities' (equipment) control unit: comprise waterway electromagnetic valve (nozzle magnetic valve) and electromagnetic valve of gas circuit, be arranged on aqueduct and gas pipeline respectively, form parallel relationship, the water of constant pressure 3bar temperature 60 C-80 DEG C and the compressed air of constant voltage 7bar finally mix at nozzle unit.Waterway electromagnetic valve (nozzle magnetic valve) for the Liquid inject amount of accurate Control Nozzle, and can keep constant, and leaving water temperature can be made to control as 60-80 DEG C, can regulate arbitrarily, precision+2 DEG C in this temperature range, can displays temperature reading; Electromagnetic valve of gas circuit is used for the jet amount of accurate Control Nozzle, and can keep constant.

This automated spray tidewater device course of work: the tidewater water of constant temperature is transported to nozzle unit by constant temperature control water unit under pressure, compressed air is also transported to nozzle unit by compressed air delivery unit under pressure simultaneously, pressure (hydraulic) water and forced air converge at nozzle place, nozzle ejection is in vaporific tidewater water, and under the regulation and control of central authorities' (equipment) control unit, Liquid inject amount and the gas emitted dose of nozzle are adjustable.

In the present invention, step 5) steams tea operation can adopt existing steaming tea equipment, but the present invention adopts solenoid valve for steam to control to steam, namely steams and namely opens, and stops after steaming, and reaches every cake tea quantity of steam consistent, realizes water content Precise control.Under " namely spray namely steam " mode, this solenoid valve for steam can be connected with central authorities' (equipment) control unit in step 4) automated spray tidewater used device, and tidewater flow process synchronously realizes Automated condtrol with spraying.

Illustrate with specific embodiment above, the instant spraying of die mould Pu'er cooked tea that the present invention proposes is made moist drawing method, to have banned in traditional handicraft not easily control and longer independent tidewater consuming time, infiltration operation, replace controlled spraying tidewater and steam tea operation, thus achieve " namely namely tide presses " of ripe tea, promote the fluency that ripe tea is produced, and improve and smoke efficiency four times more, effects of energy saving and emission reduction is obvious, and new technology of the present invention (Fig. 2) is as follows with the difference of traditional handicraft (Fig. 1):

1, the tealeaves siccative direct matching after even heap loads steaming kier, and by spraying tidewater and the operation of steaming tea, eliminate the operation of original independent tidewater, infiltration, save the tidewater infiltrating time of nearly 4 hours, strong improves manufacturing schedule, promotes the lifting of production capacity.

2, the spraying tidewater of step 4) and steaming tea (" hot water spray the is made moist ") link of step 5), it is the key link that present invention process is different from traditional handicraft, according to the requirement of different category tealeaves, tea is steamed after can taking first tidewater, or namely spray the mode of namely steaming (tidewater carries out with steaming tea simultaneously), tealeaves is made moist evenly, softens rapidly, reach the technological requirement of compacting link, concrete technology feature is as follows:

2.1 hot water are sprayed to tealeaves upper surface in steaming kier, between water temperature 60-80 DEG C, utilize water temperature to accelerate tealeaves moisture absorption and soften, utilize vaporific guarantee tealeaves to make moist evenly;

2.2 in conjunction with spraying control system, reach constant temperature, regularly, quantitative spraying Automated condtrol, make Measuring Moisture Content of Tea content controlled, ensure the uniformity of Tea Processing moisture;

2.3 spray amount set according to different tea product, and combine pressure tea equipment line body, disposable single spraying head or many shower nozzles (nozzle) atomized water spray can be concentrated, reach Measuring Moisture Content of Tea content requirement, also decomposable asymmetric choice net single spraying head discontinuity repeatedly atomized water spray, coordinate with streamline body precision, do not affect the normal operating steaming link, ensure that tidewater, steaming tea step are synchronous with production line body, coordinate automatic pressure tea equipment simultaneously, the streamline compacting realizing compacting pressing Pu'er cooked tea is produced, and device is easily assembled, dismantles and moved;

The metered dose of 2.4 upper surfaces makes moist and steams softening cooperatively interacting with the timing of lower surface, make the overall water content control of tealeaves in critical field, moisture deviation between each compressed tea individuality is less, be convenient to smoke evenly, and moisture is mainly attached to compressed tea surface, heart tea (being positioned at the tealeaves of compressed tea inside) portion of water content is relatively low, this compressed tea being also new technology is produced smokes the high reason of efficiency, this feature, not only be convenient to post storage, and the probability that reduction compressed tea goes mouldy.

3, conventional steaming time is consistent with traditional handicraft, but steam control mode to change to some extent, traditional handicraft steams process vapor and is in normally open, be unfavorable for energy-conserving and environment-protective, in new technology, steam adopts solenoid control, and controls with spraying tidewater flow process synchronised automatic, namely steam and namely open, stop after steaming, reach every cake tea quantity of steam consistent, promote water content Precise control.

4, pack is made type and is continued to use conventional processes, but according to the improvement of production technology, " spraying is made moist " and " steaming " process, can coordinate with one-time-shaped mould, realizes the automation Production line suppressing link.

5, compacting, spreading for cooling and upper baking, consistent with traditional handicraft, is both and adopts hydraulic test compressing.

6, another large feature of new technology is embodied in the efficiency and energy-conservation aspect of smoking link, make moist owing to adopting spraying, instead of original tidewater technique, greatly reduce the moisture of tealeaves, smoke front water content of tea and drop to about 7% by original about 21%, make to smoke link to be become 3 littlely to be dried at present from original 13 little bakings at present, not only smoke efficiency and improve more than four times, and energy conservation and consumption reduction effects is obvious.

Detect by new technology of the present invention (Fig. 2) with compacting pressing Pu'er cooked tea product prepared by traditional handicraft (Fig. 1):

Product is carried out sensory evaluation according to GB/T2111-2008 and measures Tea Polyphenols, coarse-fibred content; According to GB/T4789.3 and GB/T4789.21, coliform, pathogenic bacteria are detected; And carry out the assay of tea polysaccharide, theabrownin, theaflavin and thearubigin.

Result: sensory evaluation: bar rope is even, and color and luster is evenly reddish brown, soup look red is dense bright, aromatic flavour, and flavour is dense, and root of Ford Metalleaf is brown; Do not detect coliform and various pathogenic bacteria, Tea Polyphenols, crude fibre, tea polysaccharide, theabrownin, theaflavin and thearubigin detect all up to standard.

In addition, detect the product of different batches, quality, the stability of result finished product are all consistent with homogeneity.Visible production technology and manufacturing process of the present invention is completely controlled, and product safety health meets the requirement of standardized production.Compare from technique, process of the present invention not only substantially reduces the production cycle, also due to reject manually-operated drawback (as unstability, sanitary condition etc. that individual difference is taken out of), drastically increase the stability of tea product, wholesomeness and security, there is traditional compacting pressing Pu'er cooked tea and produce incomparable advance with scientific.

Claims (10)

1. the instant spraying of a compacting pressing Pu'er cooked tea is made moist drawing method, comprise the tealeaves siccative that namely compacting pressing Pu'er cooked tea raw material is prepared is carried out tidewater, steam softens, suppress and smoke process, it is characterized in that: described tidewater process is completed by automated spray tidewater device, to be the hot water of 60-80 DEG C by temperature be vaporificly is sprayed to the tealeaves siccative upper surface steamed in tea bucket, and fountain height is the 1%-3% of tealeaves siccative quality; Without the need to the impregnation process after tidewater, even steaming tea bucket is carried out steam with tidewater process after tidewater process to soften 5-6 second simultaneously, control steam and soften the water content of rear tealeaves not higher than 10wt%; Baking time after compacting is no more than 5 hours.

2. the instant spraying of compacting pressing Pu'er cooked tea is made moist drawing method according to claim 1, it is characterized in that: the spray rate that hot water is vaporific sprinkling by spray nozzle device is less than 30Kg/h, be preferably 8-12g water/5 second, spraying time is no more than 8s, and mist particle diameter size is 20-100 μm.

3. according to claim 1 or 2, the instant spraying of compacting pressing Pu'er cooked tea is made moist drawing method, it is characterized in that: steam is softening refers to that steaming tea bucket steams on Tea Service at 110-116 DEG C and softened by steam.

4. according to claim 1 or 2 or 3, the instant spraying of compacting pressing Pu'er cooked tea is made moist drawing method, it is characterized in that: comprise the following steps:

1) get the raw materials ready: be ready to prepare the raw material required for compacting pressing Pu'er cooked tea, namely spread the tealeaves siccative of point, core tea or lid tea three kinds of different models;

2) assorted barrelling: as required, loads the tealeaves siccative of different model by product design requirement and steams in tea bucket;

3) fly in the tealeaves siccative upper surface steaming tea bucket is placed;

4) spraying tidewater: hot water is sprayed onto in vaporific the tealeaves siccative upper surface steamed in tea bucket in 8s;

5) tea is steamed: steaming on Tea Service with being placed on by the steaming tea bucket after step 4) process, steaming 5-6 second at 110-116 DEG C, the water content controlling tealeaves is 7wt%;

6) type is made in pack: steamed tealeaves in steaming tea caddy is put into cloth bag or mould, manually the tealeaves in cloth bag is kneaded into required form (as cheese, brick shape, a small bay in a river shape etc.);

7) compressing: cloth bag or mould that tealeaves is housed to be placed on pressure tea machine and to be pressed;

8) spreading for cooling, solution bag are dried: the pressed tea spreading for cooling under refrigeration fan or natural conditions after compressing is about 10-20 minute, more by hand sack is removed;

9) smoke: smoked in the drying room of 40-80 DEG C by pressed tea, the time is obtain compacting pressing Pu'er cooked tea in 3 hours.

5. according to claim 1 or 2 or 3, the instant spraying of compacting pressing Pu'er cooked tea is made moist drawing method, it is characterized in that: comprise the following steps:

1) get the raw materials ready: be ready to prepare the raw material required for compacting pressing Pu'er cooked tea, namely spread the tealeaves siccative of point, core tea or lid tea three kinds of different models;

2) assorted barrelling: as required, loads the tealeaves siccative of different model by product design requirement and steams in tea bucket;

3) fly in the tealeaves siccative upper surface steaming tea bucket is placed;

4)-5) namely namely tide steams: be placed on by steaming tea bucket and steam on Tea Service, according to quantity hot water is sprayed onto in vaporific the tealeaves siccative upper surface steamed in tea bucket in 8s, steams tea bucket simultaneously and steams at 110-116 DEG C;

6) type is made in pack: steamed tealeaves in steaming tea caddy is put into cloth bag, manually the tealeaves in cloth bag is kneaded into required form (as cheese, brick shape, a small bay in a river shape etc.);

7) compressing: cloth bag or mould that tealeaves is housed to be placed on pressure tea machine and to be pressed;

8) spreading for cooling, solution bag are dried: the pressed tea spreading for cooling under refrigeration fan or natural conditions after compressing is about 10-20 minute, more by hand sack is removed;

9) smoke: smoked in the drying room of 40-80 DEG C by pressed tea, the time is 3 hours, obtains compacting pressing Pu'er cooked tea.

6. the instant spraying of the compacting pressing Pu'er cooked tea according to claim 4 or 5 is made moist drawing method, it is characterized in that: described step 2) in spread point, core tea, lid tea in quality with the ratio assembly of 15:43:42.

7. the instant spraying of the compacting pressing Pu'er cooked tea according to claim 1 or 2 or 3 or 4 or 5 or 6 is made moist drawing method, it is characterized in that: the spraying tidewater operation in described step 4) is completed by automated spray tidewater device, automated spray tidewater device comprises constant temperature control water unit, compressed air delivery unit, nozzle unit and central control unit, the constant temperature control water unit temperature that one of provides temperature constant within the scope of 60 DEG C-80 DEG C and constant pressure are at the hot water of 3bar, compressed air delivery unit provides the compressed air of constant pressure position 7bar, hot water and compressed air mix in nozzle unit, control mixing water gas blowout by central control unit and go out to be formed spray water and described tidewater.

8. to make moist drawing method according to the instant spraying of the arbitrary described compacting pressing Pu'er cooked tea of claim 1 to 7, it is characterized in that: described step 5) is steamed tea operation and adopted existing steaming tea equipment to complete, and jet chimney installs solenoid valve for steam additional.

9. the instant spraying of compacting pressing Pu'er cooked tea according to claim 7 is made moist drawing method, it is characterized in that: described step 5) is steamed tea operation and adopted existing steaming tea equipment to complete, jet chimney installs solenoid valve for steam additional, and this solenoid valve for steam is connected with the central control unit in automated spray tidewater device.

10. the instant spraying of the compacting pressing Pu'er cooked tea according to claim 7 or 8 or 9 is made moist drawing method, it is characterized in that:

Described constant temperature control water unit comprises water source, water tank, thermostat, filter, pressue device and aqueduct, water tank is received in water source after filter, water tank keeps water temperature at 60 DEG C-80 DEG C under the control of thermostat, water tank water outlet boosts to constant pressure 3bar under the effect of pipeline supercharging pump, enters nozzle unit through aqueduct;

Described compressed air delivery unit comprises air-source, pressue device, source of the gas process two element and gas pipeline, air-source is provided by air compressor machine, obtain the compressed air of constant voltage 7bar through pressue device, then connect source of the gas process two element and be connected to nozzle unit through gas pipeline; Described source of the gas process two element is made up of filter and pressure-reducing valve;

Described nozzle unit comprises nozzle, flow control valve, Pressure gauge and conveyance conduit, and flow control valve and Pressure gauge are arranged on conveyance conduit, the whole terminating nozzles of conveyance conduit; Described nozzle unit is one or more;

Described central control unit comprises nozzle magnetic valve and electromagnetic valve of gas circuit, is arranged on respectively on aqueduct and gas pipeline.