CN103947735A - Crab shell swing-type enzymolysis device - Google Patents
Crab shell swing-type enzymolysis device Download PDFInfo
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- CN103947735A CN103947735A CN201410140632.8A CN201410140632A CN103947735A CN 103947735 A CN103947735 A CN 103947735A CN 201410140632 A CN201410140632 A CN 201410140632A CN 103947735 A CN103947735 A CN 103947735A
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- enzymolysis
- pond
- service sink
- swing
- crab
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Abstract
The invention discloses a crab shell swing-type enzymolysis device, which is characterized by comprising: an enzymolysis pool (1), a crab cage (2), hoisting devices (3) and a cleaning pool (4); two hoisting devices (3) are provided and are symmetrically arranged at two sides of the enzymolysis pool (1) and the cleaning pool (4); the hoisting device (3) comprises a support bar (5), a slide cylinder (6), and lifting rods (7); the lifting rods (7) are located at two ends of the support bar (5); the slide cylinder (6) is located on the support bar (5) and can slide on the support bar (5); a hanging ring of the crab cage (2) at the same side as the slide cylinder (6) is hung below the slide cylinder (6); the enzymolysis pool (1) and the cleaning pool (4) which are parallelly arranged are disposed below the crab cage (2). The crab shell swing-type enzymolysis device provided by the invention enables the crab cage to be in a swing-type motion state driven by the hoisting device, and thus has good dissolution effect on residual crab meat and mucous membranes, and short dissolution time.
Description
Technical field
The present invention relates to the swing enzymolysis device of a kind of Carapax Eriocheir sinensis, relate in particular to a kind ofly for the mucous membrane on enzymolysis Carapax Eriocheir sinensis surface and the swing enzymolysis device of residual meat, belong to biological enzymolysis equipment technical field.
Background technology
The crab resources of China is abundant, is the bulk crab meat processing canned crab meat of getting under its chest shell of collection and in large chela to the main processing of crab, and what also have is processed into the products such as crab paste, crab cream paste, crab oil and crab seasoning.In crab processing, produce many leftover bits and pieces, comprise bound feet and a large amount of crab shell of crab.Crab shell is the primary raw material of producing chitin.It should be noted that the crab meat that also contains considerable part on crab pin and crab shell, conventionally, before chitin extraction, these residual meat must be removed.
Residual meat on removal Carapax Eriocheir sinensis and the method for mucous membrane are at present: first adopt hydrochloric acid solution to dissolve the mineral matter such as calcium, phosphorus in the crustacean shells such as crab shell, water rinses to neutral; Then with compositions such as the protein in sodium hydroxide solution hydrolysis shell and on shell, water rinses to neutral.
Although the method is simple, application is strong, produces wastewater flow rate very large, has serious environmental pollution.When traditional handicraft is produced chitin, the technique waste water producing be characterized as four height: high acid concentration, high-alkalinity, high inorganic salts (being mainly calcium chloride etc.) content and high organic matter (being mainly dissolubility protein, pigment and fat etc.) content, cause preparation process of chitin seriously polluted, simultaneously a large amount of useful resources are wasted.
In addition, the residual meat on traditional removal Carapax Eriocheir sinensis and the method for mucous membrane are generally static method, i.e. infusion method, hydrolyzate and hydrolysis device are inactive state, inactive state is not utilized residual meat after decomposition and the stripping of mucous membrane, causes hydrolysis time long, and hydrolysis efficiency is low.
Summary of the invention
Technical problem to be solved by this invention is, provide a kind of mode of action that adopts to remove the mucous membrane on Carapax Eriocheir sinensis surface and the swing enzymolysis device of residual meat, crab pot in this device can wave, and is dynamically, and the result of extraction of residual meat and mucous membrane is good, dissolution time is short, operating efficiency is high, and in waste water without strong acid and strong alkaline substance, environmental pollution is little, enzymolysis efficiency is high, and wastewater flow rate is few; Further, stirring system of the present invention is positioned at the madial wall of enzymolysis pond and service sink, it is good that this kind arranges mixing effect, and enzymolysis liquid mixes because forming convection current, and each Carapax Eriocheir sinensis surface in guarantee enzymolysis device and inner mucous membrane and residual meat all can be by effective enzymolysis.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
The swing enzymolysis device of a kind of Carapax Eriocheir sinensis, is characterized in that: comprising: enzymolysis pond, crab pot, hanging apparatus and service sink; The number of described hanging apparatus is that 2 and symmetry arrangement are in the both sides of described enzymolysis pond and service sink, described hanging apparatus comprises support bar, slide cartridge and elevating lever, described elevating lever is positioned at described support bar two ends, described slide cartridge is positioned on described support bar and on described support bar and slides, below described slide cartridge, lift the homonymy link of described crab pot, be provided with described enzymolysis pond and the service sink of parallel arrangement below described crab pot.
When described elevating lever is turned down for described crab pot is immersed to enzymolysis pond or service sink; When described elevating lever is heightened for described crab pot is shifted out to enzymolysis pond or service sink.
Described hanging apparatus comprises the first hanging apparatus and the second hanging apparatus, symmetry arrangement is connected with the homonymy link of described crab pot in the both sides of described enzymolysis pond and service sink and respectively respectively, the first hanging apparatus is positioned at the right side of described enzymolysis pond and service sink, described the second hanging apparatus is positioned at the left side of described enzymolysis pond and service sink, described elevating lever is turned down crab pot is immersed after enzymolysis pond or service sink, at least 20cm keeps at a distance at the bottom of the pond of crab pot and enzymolysis pond or service sink, when the elevating lever of described the second hanging apparatus is adjusted downwards, the elevating lever of the first hanging apparatus adjusts upward, the vertical range that the second hanging apparatus is adjusted downwards and the first hanging apparatus adjusts upward be less than crab pot apart from the distance at the bottom of pond, complete after this time adjustment, again the elevating lever of the first hanging apparatus is adjusted and the elevating lever of the second hanging apparatus adjusted upward simultaneously downwards, adjust distance the same, so complete waving of one-period, and so forth, make the crab pot motion state in waving all the time.
Described enzymolysis pond is for mucous membrane and residual meat on enzymolysis Carapax Eriocheir sinensis.
Described service sink is for cleaning the Carapax Eriocheir sinensis after enzymolysis.
Described slide cartridge slides on support bar, and the crab pot after drive enzymolysis moves to the top of service sink.
The minimum constructive height of described elevating lever is greater than the height of described crab pot, the maximum height of described elevating lever be greater than described enzymolysis pond and crab pot height and; The length of described support bar be greater than described enzymolysis pond and service sink length and.
The height of described crab pot is greater than the height in described enzymolysis pond, and the top of described crab pot is provided with cage lid, and the length, width and height in described enzymolysis pond are identical with the length, width and height of described service sink, and the length of described crab pot and width are all less than length and the width in described enzymolysis pond.
Described enzymolysis is provided with enzyme concentration detector in pond, and described enzymolysis is placed with papain in pond.
The top of described service sink is also provided with spray equipment.
The material of described crab pot is steel wire, and described enzymolysis pond and service sink are cement pit.
Described enzymolysis pond and service sink inside are provided with circulation, filtration system, stirring system and constant-temperature heating system; Described stirring system is positioned at the madial wall of described enzymolysis pond and service sink; Described circulation comprises inlet hole and apopore, is provided with described filtration system on described apopore.
The number that is positioned at the described stirring system of enzymolysis pond and service sink is at least two, lays respectively on the different madial walls of described enzymolysis pond and service sink.
Be positioned at the described constant-temperature heating system in enzymolysis pond for heating enzymolysis liquid, make enzymolysis completely and accelerate the speed of enzyme digestion reaction.
The swing enzymolysis device of a kind of Carapax Eriocheir sinensis provided by the invention, adopts mode of action to remove mucous membrane and the residual meat on Carapax Eriocheir sinensis surface, and enzymolysis is complete, can be effectively by stripping after mucous membrane and residual meat enzymolysis; Crab pot is swing motion state under the drive of hanging apparatus, and the result of extraction of residual meat and mucous membrane is good, and dissolution time is short; Stirring system is positioned at the madial wall of enzymolysis pond and service sink, and this kind of setting makes enzymolysis liquid form convection current, thereby enzymolysis liquid mixes, concentration homogeneous, and each Carapax Eriocheir sinensis surface in guarantee enzymolysis device and inner mucous membrane and residual meat all can be by effective enzymolysis; The setting of enzyme concentration detector, can intuitively embody the enzyme concentration in enzymolysis liquid, if the concentration step-down of enzymolysis liquid can drop into papain immediately, to ensure hydrolysis result.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is further described.
As shown in Figure 1, the swing enzymolysis device of a kind of Carapax Eriocheir sinensis, is characterized in that: comprising: enzymolysis pond 1, crab pot 2, hanging apparatus 3 and service sink 4; The number of described hanging apparatus 3 is that 2 and symmetry arrangement are in the both sides of described enzymolysis pond 1 and service sink 4, described hanging apparatus 3 comprises support bar 5, slide cartridge 6 and elevating lever 7, described elevating lever 7 is positioned at described support bar 5 two ends, described slide cartridge 6 is positioned on described support bar 5 and on described support bar 5 and slides, described slide cartridge 6 lifts the homonymy link of described crab pot 2 below, and described crab pot 2 is provided with described enzymolysis pond 1 and the service sink 4 of parallel arrangement below.The minimum constructive height of described elevating lever 7 is greater than the height of described crab pot 2, the maximum height of described elevating lever be greater than described enzymolysis pond 1 and crab pot 2 height and; The length of described support bar 5 be greater than described enzymolysis pond 1 and service sink 4 length and.The height of described crab pot 2 is greater than the height in described enzymolysis pond 1, the top of described crab pot 2 is provided with cage lid, the length, width and height in described enzymolysis pond 1 are identical with the length, width and height of described service sink 4, and the length of described crab pot 2 and width are all less than length and the width in described enzymolysis pond 1.In described enzymolysis pond 1, be provided with enzyme concentration detector, in described enzymolysis pond 1, be placed with papain.The top of described service sink 4 is also provided with spray equipment.The material of described crab pot 2 is steel wire, and described enzymolysis pond 1 and service sink 4 are cement pit.Described enzymolysis pond 1 and service sink 4 inside are provided with circulation, filtration system, stirring system and constant-temperature heating system; Described stirring system is positioned at the madial wall of described enzymolysis pond 1 and service sink 4; Described circulation comprises inlet hole and apopore, is provided with described filtration system on described apopore.The number that is positioned at the described stirring system of enzymolysis pond 1 and service sink 4 is at least two, lays respectively on the different madial walls of described enzymolysis pond 1 and service sink 4.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. the swing enzymolysis device of Carapax Eriocheir sinensis, is characterized in that: comprising: enzymolysis pond (1), crab pot (2), hanging apparatus (3) and service sink (4); The number of described hanging apparatus (3) is that 2 and symmetry arrangement are in the both sides of described enzymolysis pond (1) and service sink (4), described hanging apparatus (3) comprises support bar (5), slide cartridge (6) and elevating lever (7), described elevating lever (7) is positioned at described support bar (5) two ends, described slide cartridge (6) is positioned at described support bar (5) and above and at described support bar (5) above slides, described slide cartridge (6) lifts the homonymy link of described crab pot (2) below, and described crab pot (2) is provided with described enzymolysis pond (1) and the service sink (4) of parallel arrangement below.
2. the swing enzymolysis device of Carapax Eriocheir sinensis according to claim 1, it is characterized in that: the minimum constructive height of described elevating lever (7) is greater than the height of described crab pot (2), the maximum height of described elevating lever be greater than described enzymolysis pond (1) and crab pot (2) height and; The length of described support bar (5) be greater than described enzymolysis pond (1) and service sink (4) length and.
3. the swing enzymolysis device of Carapax Eriocheir sinensis according to claim 1, it is characterized in that: the height of described crab pot (2) is greater than the height in described enzymolysis pond (1), the top of described crab pot (2) is provided with cage lid, the length, width and height in described enzymolysis pond (1) are identical with the length, width and height of described service sink (4), and the length of described crab pot (2) and width are all less than length and the width in described enzymolysis pond (1).
4. the swing enzymolysis device of Carapax Eriocheir sinensis according to claim 1, is characterized in that: in described enzymolysis pond (1), be provided with enzyme concentration detector, in described enzymolysis pond (1), be placed with papain.
5. the swing enzymolysis device of Carapax Eriocheir sinensis according to claim 1, is characterized in that: the top of described service sink (4) is also provided with spray equipment.
6. the swing enzymolysis device of Carapax Eriocheir sinensis according to claim 1, is characterized in that: the material of described crab pot (2) is steel wire, and described enzymolysis pond (1) and service sink (4) are cement pit.
7. the swing enzymolysis device of Carapax Eriocheir sinensis according to claim 1, is characterized in that: described enzymolysis pond (1) and service sink (4) inside are provided with circulation, filtration system, stirring system and constant-temperature heating system; Described stirring system is positioned at the madial wall of described enzymolysis pond (1) and service sink (4); Described circulation comprises inlet hole and apopore, is provided with described filtration system on described apopore.
8. the swing enzymolysis device of Carapax Eriocheir sinensis according to claim 7, it is characterized in that: the number that is positioned at the described stirring system of enzymolysis pond (1) and service sink (4) is at least two, lay respectively on the different madial walls of described enzymolysis pond (1) and service sink (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410140632.8A CN103947735B (en) | 2014-04-09 | 2014-04-09 | The swing enzymolysis device of Carapax Eriocheir sinensis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410140632.8A CN103947735B (en) | 2014-04-09 | 2014-04-09 | The swing enzymolysis device of Carapax Eriocheir sinensis |
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| Publication Number | Publication Date |
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| CN103947735A true CN103947735A (en) | 2014-07-30 |
| CN103947735B CN103947735B (en) | 2015-12-30 |
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| CN201410140632.8A Expired - Fee Related CN103947735B (en) | 2014-04-09 | 2014-04-09 | The swing enzymolysis device of Carapax Eriocheir sinensis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104839308A (en) * | 2015-04-23 | 2015-08-19 | 江苏九寿堂生物制品有限公司 | River snail immersion cleaning machine |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2111650U (en) * | 1991-09-13 | 1992-08-05 | 罗佐昌 | Mechanical unit for continuously pickling foodstuff |
| CN2146127Y (en) * | 1992-12-09 | 1993-11-17 | 邱耀瑞 | Dipping and oscillating processor for vacuum-fried fruit, vegetables and meat products |
| CN2179005Y (en) * | 1994-01-22 | 1994-10-12 | 马恒 | Gluten, flour separator |
| JPH07178287A (en) * | 1993-12-22 | 1995-07-18 | Matsushita Electric Ind Co Ltd | Washing machine |
| JPH07285592A (en) * | 1994-04-12 | 1995-10-31 | Gootec:Kk | Automatic bottom cover opening/closing mechanism in storage container |
| JPH07303561A (en) * | 1994-05-12 | 1995-11-21 | Doi Giken:Kk | Cleansed rise cooling and immersing device |
| JPH0833791A (en) * | 1994-07-21 | 1996-02-06 | Hitachi Ltd | Washing machine |
| CN2227664Y (en) * | 1995-05-23 | 1996-05-22 | 刘彬 | Airing rack for balcony |
| JPH1024240A (en) * | 1996-07-11 | 1998-01-27 | Suzuki Motor Corp | Ultrasonic rice washing device |
| JP2000116993A (en) * | 1998-10-19 | 2000-04-25 | Tetsuo Maezuru | Drying frame |
| CN2537234Y (en) * | 2002-03-30 | 2003-02-26 | 方福德 | Device for frying dough twist |
| CN1814772A (en) * | 2005-12-06 | 2006-08-09 | 浙江金壳生物化学有限公司 | Animal shell substance treating method and device |
| CN201146751Y (en) * | 2008-01-23 | 2008-11-12 | 上海水产大学 | Earth pool nursery box for Cyclina sinensis |
| CN201361247Y (en) * | 2008-11-28 | 2009-12-16 | 山东三铭国际机械有限公司 | Medicine extracting machine for pneumatically stirring and squeezing |
| CN201493286U (en) * | 2009-10-13 | 2010-06-02 | 褚伟 | Novel rinsing slot for veterinary device |
| CN201640415U (en) * | 2010-03-05 | 2010-11-24 | 丛茜 | Food fermentation container |
| CN201727608U (en) * | 2010-07-30 | 2011-02-02 | 朱马别克 | Washing device for sheep |
| CN202609860U (en) * | 2012-02-09 | 2012-12-19 | 冯国臣 | Container shifter special for container |
| CN202751533U (en) * | 2012-07-03 | 2013-02-27 | 张伟 | Lifting suspension transfer trolley |
| CN202980108U (en) * | 2012-12-14 | 2013-06-12 | 安徽王仁和米线食品有限公司 | Rice noodle transporting and racking device |
| CN203748545U (en) * | 2014-04-09 | 2014-08-06 | 昆山市富众网络科技有限公司 | Swinging-type enzymolysis device of crab shell |
-
2014
- 2014-04-09 CN CN201410140632.8A patent/CN103947735B/en not_active Expired - Fee Related
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2111650U (en) * | 1991-09-13 | 1992-08-05 | 罗佐昌 | Mechanical unit for continuously pickling foodstuff |
| CN2146127Y (en) * | 1992-12-09 | 1993-11-17 | 邱耀瑞 | Dipping and oscillating processor for vacuum-fried fruit, vegetables and meat products |
| JPH07178287A (en) * | 1993-12-22 | 1995-07-18 | Matsushita Electric Ind Co Ltd | Washing machine |
| CN2179005Y (en) * | 1994-01-22 | 1994-10-12 | 马恒 | Gluten, flour separator |
| JPH07285592A (en) * | 1994-04-12 | 1995-10-31 | Gootec:Kk | Automatic bottom cover opening/closing mechanism in storage container |
| JPH07303561A (en) * | 1994-05-12 | 1995-11-21 | Doi Giken:Kk | Cleansed rise cooling and immersing device |
| JPH0833791A (en) * | 1994-07-21 | 1996-02-06 | Hitachi Ltd | Washing machine |
| CN2227664Y (en) * | 1995-05-23 | 1996-05-22 | 刘彬 | Airing rack for balcony |
| JPH1024240A (en) * | 1996-07-11 | 1998-01-27 | Suzuki Motor Corp | Ultrasonic rice washing device |
| JP2000116993A (en) * | 1998-10-19 | 2000-04-25 | Tetsuo Maezuru | Drying frame |
| CN2537234Y (en) * | 2002-03-30 | 2003-02-26 | 方福德 | Device for frying dough twist |
| CN1814772A (en) * | 2005-12-06 | 2006-08-09 | 浙江金壳生物化学有限公司 | Animal shell substance treating method and device |
| CN201146751Y (en) * | 2008-01-23 | 2008-11-12 | 上海水产大学 | Earth pool nursery box for Cyclina sinensis |
| CN201361247Y (en) * | 2008-11-28 | 2009-12-16 | 山东三铭国际机械有限公司 | Medicine extracting machine for pneumatically stirring and squeezing |
| CN201493286U (en) * | 2009-10-13 | 2010-06-02 | 褚伟 | Novel rinsing slot for veterinary device |
| CN201640415U (en) * | 2010-03-05 | 2010-11-24 | 丛茜 | Food fermentation container |
| CN201727608U (en) * | 2010-07-30 | 2011-02-02 | 朱马别克 | Washing device for sheep |
| CN202609860U (en) * | 2012-02-09 | 2012-12-19 | 冯国臣 | Container shifter special for container |
| CN202751533U (en) * | 2012-07-03 | 2013-02-27 | 张伟 | Lifting suspension transfer trolley |
| CN202980108U (en) * | 2012-12-14 | 2013-06-12 | 安徽王仁和米线食品有限公司 | Rice noodle transporting and racking device |
| CN203748545U (en) * | 2014-04-09 | 2014-08-06 | 昆山市富众网络科技有限公司 | Swinging-type enzymolysis device of crab shell |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104839308A (en) * | 2015-04-23 | 2015-08-19 | 江苏九寿堂生物制品有限公司 | River snail immersion cleaning machine |
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|---|---|
| CN103947735B (en) | 2015-12-30 |
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Effective date of registration: 20171121 Address after: 221300 middle and small enterprise entrepreneurship center, Pizhou, Pizhou City, Jiangsu Patentee after: Jiangsu Jing Mu Biotechnology Co., Ltd. Address before: Suzhou City, Jiangsu Province, Yushan town Kunshan 215300 Dengyun Road No. 268 National Science and technology business incubator room 706 Patentee before: Kunshan Fuzone Network Technology Co., Ltd. |
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