CN109393229A - A kind of crab feed production method - Google Patents

Abstract

The invention discloses a kind of crab feed production methods, with the raw material of following parts by weight: water peanut 10%, brewex's grains 3%, earthworm powder 6.28%, fish meal 6%, fly maggot powder 5%, pig blood 2.2%, dandelion 0.2%, purslane 0.25%, rapeseed cake 8%, duckweed 18%, mulberry leaf 18%, seaweed 2%, egg pupa powder 4%, glycine betaine 0.06%, bile salt 0.01%, wheat-middlings 12%, cassava fecula 5%, pass through conveying, cleaning, it crushes, mixing, it is quenched, the preparation of the processes such as extrusion, cost of material of the invention is low, but nutrition is balanced for finished product, feeding effect is good, and there is diseases prevention, promote the effect digested and assimilated.

Description

A kind of crab feed production method

Technical field

The present invention relates to aquatic feeds fields, and in particular to a kind of crab feed production method.

Background technique

Crab protein rich in and microelement have good tonic effect to body.There are also treating tuberculosis for crab Effect, eating crab has greatly help to rehabilitation lungy.Crab is cold in nature, taste is salty, returns liver, stomach meridian；Have clearing heat and detoxicating, Psoralen add marrow, Nourishing the muscle and tendon synthetism, removing dampness through diuresis and removing jaundice, sharp podomere, nourishing liver yin, fills the effect of gastric juice at activating blood circulation and dissipating phlegm；For extravasated blood, jaundice, waist and leg ache Have certain food therapy effect with rheumatic arthritis etc., and the delicious meat of crab is fresh very popular, the cultivation of crab by It is formed on the development of crab feed production technology, crab feed is a kind of sinking feed, what production method currently on the market produced Main problem existing for crab feed is: cost of material is high, efficiency of feed utilization is low, and generates a large amount of dust in production process and do not have but There is explosion precaution, there are security risks；Crab is poor to general plant feed digestibility and utilization ability, affects disappearing for nutriment Change and absorb, how to reduce cost of material using plant and nutrition equilibrium can be produced, is suitble to crab feeding habits and is conducive to digest and assimilate Crab feed be a problem to be solved.

Summary of the invention

The purpose of the present invention is to solve above-mentioned technical problems, provide a kind of crab feed production method, utilize original The complementation of material makes original by secondary quenched, mixing, maturation process accordingly matched smashing fineness and suitable temperature, moisture Material reaches the glutinous degree of most good soft, prepares that nutrition is balanced, palatability is good, feed system by extrusion and unique auxiliary process The low feed of number, yields is high, abundant raw material, cheap, select everywhere can target-seeking plant as basic raw material, be greatly reduced Cost of material, but nutrition is balanced for resulting crab feed, and feeding effect is good, has good diseases prevention, promotes digestion, And improve efficiency of feed utilization, reduce residual bait, water quality is improved, ultramicro grinding process is eliminated in production method, further Production cost is reduced, is controlled by refining temperature etc., product effect but has same effect, and production method of the invention With explosion prevention function, the hidden danger of dust explosion in Feed Manufacturing is prevented.

It is provided by the invention the specific scheme is that a kind of crab feed production method, which is characterized in that the crab feed with Weight percent meter is made of following component: water peanut 10%, brewex's grains 3%, earthworm powder 6.28%, fish meal 6%, fly maggot powder 5%, pig Blood 2.2%, dandelion 0.2%, purslane 0.25%, rapeseed cake 8%, duckweed 18%, mulberry leaf 18%, seaweed 2%, egg pupa powder 4%, glycine betaine 0.06%, bile salt 0.01%, wheat-middlings 12%, cassava fecula 5%；

The production method include the following steps: 1), by rapeseed cake 8%, duckweed 18%, mulberry leaf 18%, 2% raw material of seaweed with 6~ The ribbon conveyer that installation is tilted on 15 degree is sent into receiving sieve impurity elimination cleaning, then after magnetic separator de-iron, through spiral ribbon mixer into Row imports wind-force through double-vane flow deflector after mixing for the first time and removes stone feeder, then feeds vertical crusher and crushes to obtain smashing fineness Raw material for 60~70 mesh is stand-by；

2) pig blood 2.2%, dandelion 0.2%, purslane 0.25%, brewex's grains 3%, are used into hammering crushing after cleaning screen clears up impurity elimination Machine crushes to obtain raw material and first step gained raw material and water peanut 10%, earthworm powder 6.28%, fish meal 6%, fly maggot powder 5%, egg pupa Powder 4%, after glycine betaine 0.06%, bile salt 0.01%, wheat-middlings 12%, cassava fecula 5% carries out secondary mixing, through vibration discharger Discharging falls into autoclave quality-adjusting device and is passed through 62 DEG C~66 DEG C of steam, and mixing is quenched, and holding 18~after twenty minutes, into post curing It is crushed again through vertical crusher after drying machine is dry, smashing fineness is to be discharged after 90~100 mesh through 45 degree inclinations of helix emptying machine Enter the adjustable screw blade formula quality-adjusting device of barrel temperature through dextrorotation variable-pitch auger feeder again, adds 25~26% water Point, 82 DEG C~87 DEG C at a temperature of carry out quenched 32~38 seconds after, temperature through screw blade formula retainer at 78 DEG C~88 DEG C The degree lower heat preservation sterilization of curing in 100~200 seconds, feeds single screw rod by bulking machine feed hopper by dextrorotation variable-pitch auger feeder Extruder carries out extrusion, extruding product before depanning temperature control at 123~140 DEG C, pressure control 33~ 36kg/cm2, the grain density after the extruding product depanning are controlled in 550~600kg/m3, the single screw squeezing expansion machine Die throat diameter be Φ 2, draw ratio 2, the bulking machine feed hopper gradient be greater than 72 degree, two sides are symmetrically each provided with one Gas butterfly, the secondary mixing open greatly two-door mixing machine using oar blade type, hammer crusher described in step 1) and step 2, vertical Pulverizer, micronizer discharge port be all rectangular or rectangle, be connected separately with that one section of 30mm~130mm high is rectangular or square The other end of the changeover portion of shape, changeover portion is just connect with respective lower road equipment, and the one side of the changeover portion is both provided with band The safety plate of extinguishing device, another plane of symmetry, which is both provided with, leads to outdoor pilot safety plate and pipeline；

3) puffed material obtained by step 3) is transported to through self-cleaning type bucket elevator, and is arranged in high-rise included evaporation and aqueous In the double belt drying machines of the cross-flow type of rate control module after conical air duct is dry, 3% fish is sprayed with continous way roller spray machine For oil by vibration separation screen after turnover panel cooler is cooling, screening gained finished product carries out packing stacking, in the production method steps Dust pelletizing system is equipped at each charging and discharging, the dust pelletizing system is provided with pressure relief opening, and uses elongnated building conduit Pressure relief opening is led into outdoor, the length of the elongnated building conduit is less than 3m, cannot in the setting of elongnated building conduit scene There is the turning less than 138 degree.

Preferably, pulse bag type dust collector of the dust pelletizing system using configuration antistatic filter bag, the impulse bag Circle transition conduit is arranged in the ejection air port of deduster, and the round transition conduit other end and blower direct connection, the blower direct connection have Muffler, the muffler is horizontal positioned, and the round transition length of tube is not more than 0.8m.

Preferably, the dextrorotation variable-pitch auger feeder installation gradient is no more than 10 °.

Preferably, the grain density of the extruding product is controlled using density controller.

Preferably, autoclave quality-adjusting device inner cavity uses stainless steel material.

The invention has the following advantages:

Compared with prior art, the invention has the advantages that significantly reducing cost of material, but nutrition is equal for resulting crab feed Weighing apparatus, feeding effect is good, has good diseases prevention, promotes digestion, and improve efficiency of feed utilization, reduce residual bait, improves Water quality eliminates ultramicro grinding process in production method, further reduced production cost, controlled by refining temperature etc., Product effect but has same effect, and in addition production method of the invention has explosion prevention function, has prevented dust in Feed Manufacturing The hidden danger of explosion.

Below by way of specific embodiment, the invention will be further described, but it should not be construed as protecting the present invention The limitation of range.

Embodiment 1

A kind of crab feed production method, which is characterized in that the crab feed is made of following component by weight percentage: Water peanut 10%, brewex's grains 3%, earthworm powder 6.28%, fish meal 6%, fly maggot powder 5%, pig blood 2.2%, dandelion 0.2%, purslane 0.25%, rapeseed cake 8%, duckweed 18%, mulberry leaf 18%, seaweed 2%, egg pupa powder 4%, glycine betaine 0.06%, bile salt 0.01%, wheat-middlings 12%, cassava fecula 5%；

The production method include the following steps: 1), by rapeseed cake 8%, duckweed 18%, mulberry leaf 18%, 2% raw material of seaweed is with 6 degree The ribbon conveyer of upper inclination installation is sent into receiving sieve impurity elimination cleaning, then after magnetic separator de-iron, carries out the through spiral ribbon mixer After mixed once through double-vane flow deflector import wind-force remove stone feeder, then feed vertical crusher crush smashing fineness be 60 Purpose raw material is stand-by；

2) pig blood 2.2%, dandelion 0.2%, purslane 0.25%, brewex's grains 3%, are used into hammering crushing after cleaning screen clears up impurity elimination Machine crushes to obtain raw material and first step gained raw material and water peanut 10%, earthworm powder 6.28%, fish meal 6%, fly maggot powder 5%, egg pupa Powder 4%, after glycine betaine 0.06%, bile salt 0.01%, wheat-middlings 12%, cassava fecula 5% carries out secondary mixing, through vibration discharger Discharging falls into autoclave quality-adjusting device and is passed through 62 DEG C of steam, and mixing is quenched, dry into after-ripening fluidized dryer after being kept for 18 minutes It is crushed again through vertical crusher afterwards, smashing fineness is to discharge through 45 degree inclinations of helix emptying machine again through dextrorotation varying pitch after 90 mesh Scroll feeder enters the adjustable screw blade formula quality-adjusting device of barrel temperature, adds 25% moisture, 82 DEG C at a temperature of into Row is sterilized after quenched 32 seconds, through screw blade formula retainer in 78 DEG C of at a temperature of heat preservation curing in 100 seconds, by dextrorotation varying pitch Scroll feeder feeds single screw squeezing expansion machine by bulking machine feed hopper and carries out extrusion, and extruding product is warm before depanning At 123 DEG C, grain density of the pressure control after 33kg/cm2, the extruding product depanning is controlled in 550kg/m3 for degree control, The die throat diameter of the single screw squeezing expansion machine is Φ 2, and draw ratio 2, the bulking machine feed hopper gradient is greater than 72 degree, two Side is symmetrically each provided with a gas butterfly, and the secondary mixing opens greatly two-door mixing machine, step 1) and step 2 using oar blade type Described in hammer crusher, vertical crusher, micronizer discharge port be all rectangular or rectangle, be connected separately with one section The other end of rectangular or rectangle the changeover portion of 30mm high, changeover portion is just connect with respective lower road equipment, the changeover portion One side is both provided with the safety plate with extinguishing device, and another plane of symmetry, which is both provided with, leads to outdoor pilot safety plate and pipe Road；

3) puffed material obtained by step 3) is transported to through self-cleaning type bucket elevator, and is arranged in high-rise included evaporation and aqueous In the double belt drying machines of the cross-flow type of rate control module after conical air duct is dry, 3% fish is sprayed with continous way roller spray machine For oil by vibration separation screen after turnover panel cooler is cooling, screening gained finished product carries out packing stacking, in the production method steps Dust pelletizing system is equipped at each charging and discharging, the dust pelletizing system is provided with pressure relief opening, and uses elongnated building conduit Pressure relief opening is led into outdoor, the length of the elongnated building conduit is less than 3m, cannot in the setting of elongnated building conduit scene There is the turning less than 138 degree.

In real work, pulse bag type dust collector of the dust pelletizing system using configuration antistatic filter bag, the pulse packet Circle transition conduit, the round transition conduit other end and blower direct connection, the blower direct connection is arranged in the ejection air port of formula deduster There is muffler, the muffler is horizontal positioned, and the round transition length of tube is not more than 0.8m.

In real work, the dextrorotation variable-pitch auger feeder installation gradient is no more than 10 °.

In real work, the grain density of the extruding product is controlled using density controller.

In real work, autoclave quality-adjusting device inner cavity uses stainless steel material.

Embodiment 2

A kind of crab feed production method, which is characterized in that the crab feed is made of following component by weight percentage: Water peanut 10%, brewex's grains 3%, earthworm powder 6.28%, fish meal 6%, fly maggot powder 5%, pig blood 2.2%, dandelion 0.2%, purslane 0.25%, rapeseed cake 8%, duckweed 18%, mulberry leaf 18%, seaweed 2%, egg pupa powder 4%, glycine betaine 0.06%, bile salt 0.01%, wheat-middlings 12%, cassava fecula 5%；

The production method include the following steps: 1), by rapeseed cake 8%, duckweed 18%, mulberry leaf 18%, 2% raw material of seaweed with 6~ The ribbon conveyer that installation is tilted on 15 degree is sent into receiving sieve impurity elimination cleaning, then after magnetic separator de-iron, through spiral ribbon mixer into Row imports wind-force through double-vane flow deflector after mixing for the first time and removes stone feeder, then feeds vertical crusher and crushes to obtain smashing fineness Raw material for 68 mesh is stand-by；

2) pig blood 2.2%, dandelion 0.2%, purslane 0.25%, brewex's grains 3%, are used into hammering crushing after cleaning screen clears up impurity elimination Machine crushes to obtain raw material and first step gained raw material and water peanut 10%, earthworm powder 6.28%, fish meal 6%, fly maggot powder 5%, egg pupa Powder 4%, after glycine betaine 0.06%, bile salt 0.01%, wheat-middlings 12%, cassava fecula 5% carries out secondary mixing, through vibration discharger Discharging falls into autoclave quality-adjusting device and is passed through 65 DEG C of steam, and mixing is quenched, dry into after-ripening fluidized dryer after being kept for 19 minutes It is crushed again through vertical crusher afterwards, smashing fineness is to discharge through 45 degree inclinations of helix emptying machine again through dextrorotation varying pitch after 96 mesh Scroll feeder enters the adjustable screw blade formula quality-adjusting device of barrel temperature, adds 25.5% moisture, 86 DEG C at a temperature of After carrying out quenched 33 seconds, through screw blade formula retainer in 79 DEG C of the at a temperature of heat preservation sterilization of curing in 120 seconds, become spiral shell by dextrorotation Single screw squeezing expansion machine is fed by bulking machine feed hopper away from scroll feeder and carries out extrusion, extruding product is before depanning At 128 DEG C, grain density of the pressure control after 35kg/cm2, the extruding product depanning is controlled in 580kg/ for temperature control M3, the die throat diameter of the single screw squeezing expansion machine are Φ 2, and draw ratio 2, the bulking machine feed hopper gradient is greater than 72 Degree, two sides are symmetrically each provided with a gas butterfly, and the secondary mixing opens greatly two-door mixing machine, step 1) and step using oar blade type It is rapid 2) described in hammer crusher, vertical crusher, micronizer discharge port be all rectangular or rectangle, be connected separately with one The other end of rectangular or rectangle the changeover portion of section 90mm high, changeover portion is just connect with respective lower road equipment, the changeover portion One side be both provided with the safety plate with extinguishing device, another plane of symmetry, which is both provided with, leads to outdoor pilot safety plate and pipe Road；

3) puffed material obtained by step 3) is transported to through self-cleaning type bucket elevator, and is arranged in high-rise included evaporation and aqueous In the double belt drying machines of the cross-flow type of rate control module after conical air duct is dry, 3% fish is sprayed with continous way roller spray machine For oil by vibration separation screen after turnover panel cooler is cooling, screening gained finished product carries out packing stacking, in the production method steps Dust pelletizing system is equipped at each charging and discharging, the dust pelletizing system is provided with pressure relief opening, and uses elongnated building conduit Pressure relief opening is led into outdoor, the length of the elongnated building conduit is less than 3m, cannot in the setting of elongnated building conduit scene There is the turning less than 138 degree.

In real work, pulse bag type dust collector of the dust pelletizing system using configuration antistatic filter bag, the pulse packet Circle transition conduit, the round transition conduit other end and blower direct connection, the blower direct connection is arranged in the ejection air port of formula deduster There is muffler, the muffler is horizontal positioned, and the round transition length of tube is not more than 0.8m.

In real work, the dextrorotation variable-pitch auger feeder installation gradient is no more than 10 °.

In real work, the grain density of the extruding product is controlled using density controller.

In real work, autoclave quality-adjusting device inner cavity uses stainless steel material.

Embodiment 3

A kind of crab feed production method, which is characterized in that the crab feed is made of following component by weight percentage: Water peanut 10%, brewex's grains 3%, earthworm powder 6.28%, fish meal 6%, fly maggot powder 5%, pig blood 2.2%, dandelion 0.2%, purslane 0.25%, rapeseed cake 8%, duckweed 18%, mulberry leaf 18%, seaweed 2%, egg pupa powder 4%, glycine betaine 0.06%, bile salt 0.01%, wheat-middlings 12%, cassava fecula 5%；

The production method include the following steps: 1), by rapeseed cake 8%, duckweed 18%, mulberry leaf 18%, 2% raw material of seaweed is with 15 degree The ribbon conveyer of upper inclination installation is sent into receiving sieve impurity elimination cleaning, then after magnetic separator de-iron, carries out the through spiral ribbon mixer After mixed once through double-vane flow deflector import wind-force remove stone feeder, then feed vertical crusher crush smashing fineness be 70 Purpose raw material is stand-by；

2) pig blood 2.2%, dandelion 0.2%, purslane 0.25%, brewex's grains 3%, are used into hammering crushing after cleaning screen clears up impurity elimination Machine crushes to obtain raw material and first step gained raw material and water peanut 10%, earthworm powder 6.28%, fish meal 6%, fly maggot powder 5%, egg pupa Powder 4%, after glycine betaine 0.06%, bile salt 0.01%, wheat-middlings 12%, cassava fecula 5% carries out secondary mixing, through vibration discharger Discharging falls into autoclave quality-adjusting device and is passed through 66 DEG C of steam, and mixing is quenched, keeps after twenty minutes, dry into after-ripening fluidized dryer It is crushed again through vertical crusher afterwards, smashing fineness is to discharge through 45 degree inclinations of helix emptying machine again through dextrorotation varying pitch after 100 mesh Scroll feeder enters the adjustable screw blade formula quality-adjusting device of barrel temperature, adds 26% moisture, 87 DEG C at a temperature of into Row is sterilized after quenched 38 seconds, through screw blade formula retainer in 88 DEG C of at a temperature of heat preservation curing in 200 seconds, by dextrorotation varying pitch Scroll feeder feeds single screw squeezing expansion machine by bulking machine feed hopper and carries out extrusion, and extruding product is warm before depanning At 140 DEG C, grain density of the pressure control after 36kg/cm2, the extruding product depanning is controlled in 600kg/m3 for degree control, The die throat diameter of the single screw squeezing expansion machine is Φ 2, and draw ratio 2, the bulking machine feed hopper gradient is greater than 72 degree, two Side is symmetrically each provided with a gas butterfly, and the secondary mixing opens greatly two-door mixing machine, step 1) and step 2 using oar blade type Described in hammer crusher, vertical crusher, micronizer discharge port be all rectangular or rectangle, be connected separately with one section The other end of rectangular or rectangle the changeover portion of 130mm high, changeover portion is just connect with respective lower road equipment, the changeover portion One side is both provided with the safety plate with extinguishing device, and another plane of symmetry, which is both provided with, leads to outdoor pilot safety plate and pipe Road；

3) puffed material obtained by step 3) is transported to through self-cleaning type bucket elevator, and is arranged in high-rise included evaporation and aqueous In the double belt drying machines of the cross-flow type of rate control module after conical air duct is dry, 3% fish is sprayed with continous way roller spray machine For oil by vibration separation screen after turnover panel cooler is cooling, screening gained finished product carries out packing stacking, in the production method steps Dust pelletizing system is equipped at each charging and discharging, the dust pelletizing system is provided with pressure relief opening, and uses elongnated building conduit Pressure relief opening is led into outdoor, the length of the elongnated building conduit is less than 3m, cannot in the setting of elongnated building conduit scene There is the turning less than 138 degree.

In real work, pulse bag type dust collector of the dust pelletizing system using configuration antistatic filter bag, the pulse packet Circle transition conduit, the round transition conduit other end and blower direct connection, the blower direct connection is arranged in the ejection air port of formula deduster There is muffler, the muffler is horizontal positioned, and the round transition length of tube is not more than 0.8m.

In real work, the dextrorotation variable-pitch auger feeder installation gradient is no more than 10 °.

In real work, the grain density of the extruding product is controlled using density controller.

In real work, autoclave quality-adjusting device inner cavity uses stainless steel material.

The specific implementation of the invention is not to be limited to these illustrations for above embodiments, for technology belonging to the present invention For the those of ordinary skill in field, without departing from the inventive concept of the premise, several simple deductions can also be made or replaced It changes, all shall be regarded as belonging to present invention scope of patent protection determined by the appended claims.

Claims (5)

1. a kind of crab feed production method, which is characterized in that the crab feed is by weight percentage by following component group At: water peanut 10%, brewex's grains 3%, earthworm powder 6.28%, fish meal 6%, fly maggot powder 5%, pig blood 2.2%, dandelion 0.2%, purslane 0.25%, rapeseed cake 8%, duckweed 18%, mulberry leaf 18%, seaweed 2%, egg pupa powder 4%, glycine betaine 0.06%, bile salt 0.01%, wheat-middlings 12%, cassava fecula 5%；

The production method include the following steps: 1), by rapeseed cake 8%, duckweed 18%, mulberry leaf 18%, 2% raw material of seaweed with 6~ The ribbon conveyer that installation is tilted on 15 degree is sent into receiving sieve impurity elimination cleaning, then after magnetic separator de-iron, through spiral ribbon mixer into Row imports wind-force through double-vane flow deflector after mixing for the first time and removes stone feeder, then feeds vertical crusher and crushes to obtain smashing fineness Raw material for 60~70 mesh is stand-by；

2) pig blood 2.2%, dandelion 0.2%, purslane 0.25%, brewex's grains 3%, are used into hammering crushing after cleaning screen clears up impurity elimination Machine crushes to obtain raw material and first step gained raw material and water peanut 10%, earthworm powder 6.28%, fish meal 6%, fly maggot powder 5%, egg pupa Powder 4%, after glycine betaine 0.06%, bile salt 0.01%, wheat-middlings 12%, cassava fecula 5% carries out secondary mixing, through vibration discharger Discharging falls into autoclave quality-adjusting device and is passed through 62 DEG C~66 DEG C of steam, and mixing is quenched, and holding 18~after twenty minutes, into post curing It is crushed again through vertical crusher after drying machine is dry, smashing fineness is to be discharged after 90~100 mesh through 45 degree inclinations of helix emptying machine Enter the adjustable screw blade formula quality-adjusting device of barrel temperature through dextrorotation variable-pitch auger feeder again, adds 25~26% water Point, 82 DEG C~87 DEG C at a temperature of carry out quenched 32~38 seconds after, temperature through screw blade formula retainer at 78 DEG C~88 DEG C The degree lower heat preservation sterilization of curing in 100~200 seconds, feeds single screw rod by bulking machine feed hopper by dextrorotation variable-pitch auger feeder Extruder carries out extrusion, extruding product before depanning temperature control at 123~140 DEG C, pressure control 33~ 36kg/cm2, the grain density after the extruding product depanning are controlled in 550~600kg/m3, the single screw squeezing expansion machine Die throat diameter be Φ 2, draw ratio 2, the bulking machine feed hopper gradient be greater than 72 degree, two sides are symmetrically each provided with one Gas butterfly, the secondary mixing open greatly two-door mixing machine using oar blade type, hammer crusher described in step 1) and step 2, vertical Pulverizer, micronizer discharge port be all rectangular or rectangle, be connected separately with that one section of 30mm~130mm high is rectangular or square The other end of the changeover portion of shape, changeover portion is just connect with respective lower road equipment, and the one side of the changeover portion is both provided with band The safety plate of extinguishing device, another plane of symmetry, which is both provided with, leads to outdoor pilot safety plate and pipeline；

3) puffed material obtained by step 3) is transported to through self-cleaning type bucket elevator, and is arranged in high-rise included evaporation and aqueous In the double belt drying machines of the cross-flow type of rate control module after conical air duct is dry, 3% fish is sprayed with continous way roller spray machine For oil by vibration separation screen after turnover panel cooler is cooling, screening gained finished product carries out packing stacking, in the production method steps Dust pelletizing system is equipped at each charging and discharging, the dust pelletizing system is provided with pressure relief opening, and uses elongnated building conduit Pressure relief opening is led into outdoor, the length of the elongnated building conduit is less than 3m, cannot in the setting of elongnated building conduit scene There is the turning less than 138 degree.

2. a kind of crab feed production method according to claim 1, which is characterized in that the dust pelletizing system is using configuration Circle transition conduit, the circle is arranged in the pulse bag type dust collector of antistatic filter bag, the ejection air port of the pulse bag type dust collector Transition conduit other end and blower direct connection, the blower direct connection have muffler, and the muffler is horizontal positioned, the round coupling tube Length is not more than 0.8m.

3. a kind of crab feed production method according to claim 1, which is characterized in that the dextrorotation variable-pitch auger is fed Glassware installs gradient no more than 10 °.

4. a kind of crab feed production method according to claim 1, which is characterized in that the particle of the extruding product is close Degree is controlled using density controller.

5. a kind of crab feed production method according to claim 1, which is characterized in that adopt autoclave quality-adjusting device inner cavity Use stainless steel material.