CN104146051B - A kind of liquid nitrogen frozen tunnel machine - Google Patents
A kind of liquid nitrogen frozen tunnel machine Download PDFInfo
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- CN104146051B CN104146051B CN201410254009.5A CN201410254009A CN104146051B CN 104146051 B CN104146051 B CN 104146051B CN 201410254009 A CN201410254009 A CN 201410254009A CN 104146051 B CN104146051 B CN 104146051B
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Abstract
The invention discloses a kind of liquid nitrogen frozen tunnel machine, aiming to provide one can effectively avoid the aquatic products such as fish in refrigerating process, easily mutually freezes together, is difficult to the liquid nitrogen frozen tunnel machine of the problem split between each aquatic products.It comprises refrigerating chamber, is arranged on the rubber cushion blocks on refrigerating chamber bottom surface, is fixedly installed on the support underframe above rubber cushion blocks and is arranged on the wired belt conveyer above support underframe by the first bracing frame; Support underframe is provided with at least one vibrator, the side of described refrigerating chamber is provided with charging aperture, relative opposite side is provided with discharging opening, described wired belt conveyer comprises drive sprocket, driven sprocket and the foraminous conveyer around drive sprocket and driven sprocket, described foraminous conveyer is extended from charging aperture toward discharging opening direction, described charging aperture place is provided with feeding web, and this feeding web is positioned at above foraminous conveyer, and the direction of transfer of feeding web is identical with the direction of transfer of foraminous conveyer.
Description
Technical field
The present invention relates to a kind of freezing equipment, be specifically related to a kind of to aquatic products, especially freezing liquid nitrogen frozen tunnel machine carried out to fish products.
Background technology
Freezing the referring to of aquatic products utilizes cryogenic conditions to suppress the activity of aquatic products autolysis enzyme and the breeding of attached microbial, and slows down its chemical reaction velocity such as lipid oxidation, nonenzymatic browning, makes it the low-temp antistaling method that can keep fine quality at duration of storage.Aquatic products are freezing roughly to be comprised cold storing and fresh-keeping and freezes fresh-keeping two class methods, wherein freezes fresh-keeping method and mainly first carries out quick-frozen by freezing equipment to fresh aquatic product.Liquid nitrogen frozen equipment has energy snap frozen product because of it, tides over ice crystal generation band, prevent the formation of large ice crystal in food cell from destroying cell membrane, the feature of the original local flavor of good maintenance product and quality, become current aquatic products freezing in a kind of superior freezing equipment.Liquid nitrogen frozen technique usually adopts and is directly sprayed onto on aquatic products (fish body) by liquid nitrogen, makes aquatic products reach the object of snap frozen.
Current liquid nitrogen frozen equipment is divided into cabinet type and tunnel type liquid nitrogen frozen equipment usually, wherein tunnel type liquid nitrogen frozen equipment adopts conveyer belt to transmit frozen product, and carrying out freezing to aquatic products in transport process, it is applicable to the freezing production of large batch of aquatic products; But current tunnel type liquid nitrogen frozen equipment has the following disadvantages: one, the aquatic products such as fish, in refrigerating process, easily freeze together between each aquatic products mutually, are difficult to split; They are two years old, adopt in the process of belt conveyor conveying aquatic products, to fit on a moving belt in a certain position of aquatic products, especially the fitting area of fish and conveyer belt is larger, and this causes the freezing efficiency on the aquatic products surface of fitting with conveyer belt to reduce (directly cannot be sprayed onto by liquid nitrogen); Not enough in order to improve this, usually transmission net is adopted to bring replacement belt conveyor at present, foraminous conveyer has a large amount of mesh and can reduce the contact area between aquatic products and conveyer belt such as fish greatly, and liquid nitrogen can be sprayed onto the aquatic products surfaces such as fish by mesh, effectively improve aquatic products freezing efficiency; But adopt transmission net to bring conveying aquatic products, when especially carrying the less or efoliolate fish products of some scales (as yellow croaker, butterfish, cod, opium fish, how precious fish, saury etc.), this kind of fish products is at the beginning of freezing, and its surface is comparatively soft; And contact area between the aquatic products such as foraminous conveyer and fish is very little, which results in the fish products be placed on foraminous conveyer and will produce darker crisscross netted impression on the surface, these netted impressions by being cured along with the freezing of aquatic products, inscription rubbing in fish surface, this not only have impact on fish products presentation quality greatly; And the netted impression of solidification also easily affects the flesh of fish original local flavor, mouthfeel and quality.
Summary of the invention
The first object of the present invention is to overcome tunnel type liquid nitrogen frozen equipment of the prior art at aquatic products such as fish in refrigerating process, easily mutually freeze together, be difficult to the problem of fractionation between each aquatic products, there is provided one effectively to avoid the aquatic products such as fish in refrigerating process, easily mutually freeze together between each aquatic products, be difficult to the liquid nitrogen frozen tunnel machine of the problem split.
Second object of the present invention on the first object basis be in order to overcome tunnel type liquid nitrogen frozen equipment of the prior art adopt transmission net to bring conveying scale less or efoliolate fish products time, fish products after freezing will produce darker crisscross netted impression on the surface, the problem of the impact flesh of fish original local flavor, mouthfeel and quality; Under a kind of prerequisite not affecting freezing efficiency is provided, when effective improvement adopts foraminous conveyer conveying scale less or efoliolate fish products, fish products after freezing by producing the problem of darker crisscross netted impression, can keep the liquid nitrogen frozen tunnel machine of the original local flavor of fish products, mouthfeel and quality on the surface preferably.
Technical scheme of the present invention is:
A kind of liquid nitrogen frozen tunnel machine comprises refrigerating chamber, is arranged on the rubber cushion blocks on refrigerating chamber bottom surface, is fixedly installed on the support underframe above rubber cushion blocks and is arranged on the wired belt conveyer above support underframe by the first bracing frame, described support underframe is provided with at least one vibrator, the side of described refrigerating chamber is provided with charging aperture, relative opposite side is provided with discharging opening, described wired belt conveyer comprises drive sprocket, driven sprocket and the foraminous conveyer around drive sprocket and driven sprocket, described foraminous conveyer is extended from charging aperture toward discharging opening direction, described charging aperture place is provided with feeding web, this feeding web is positioned at above foraminous conveyer, and the direction of transfer of feeding web is identical with the direction of transfer of foraminous conveyer, the outer end of feeding web is positioned at outside charging aperture, the inner of feeding web is toward interior extension, and be positioned at above foraminous conveyer.
Because the support underframe of this programme and wired belt conveyer are arranged on rubber cushion blocks, there is vibration by a small margin in the whole wired belt conveyer of the drive can fallen again when vibrator works; Thus when aquatic products are carried by foraminous conveyer, and when carrying out freezing to aquatic products in course of conveying, can by vibrator drive transmission net and on aquatic products constantly vibrate, thus effectively avoid the aquatic products such as fish in refrigerating process, easily mutually freeze together, be difficult to the problem of fractionation between each aquatic products.
As preferably, also comprise the trace conveyer mechanism that disappears be arranged on by the second bracing frame on support underframe, described foraminous conveyer comprises the epimere foraminous conveyer be positioned at above drive sprocket and driven sprocket and the hypomere foraminous conveyer be positioned at below drive sprocket and driven sprocket; The described trace conveyer mechanism that disappears is between epimere foraminous conveyer and hypomere foraminous conveyer, and close charging aperture; The described trace conveyer mechanism that disappears comprises two delivery wheels and the conveyer belt around two delivery wheels, and the direction of transfer of conveyer belt is identical with the direction of transfer of foraminous conveyer; Evenly distributed on the outer surface of described conveyer belt have some disappear trace double wedges suitable with the mesh of foraminous conveyer, and each mesh being positioned at the epimere foraminous conveyer directly over conveyer belt is inserted with the trace double wedge that disappears respectively, the end face of the trace double wedge that disappears in each mesh is from lower to upper through mesh, and be positioned at the top of epimere foraminous conveyer, the height of projection of trace double wedge of respectively disappearing is identical, and the end face of the trace double wedge that respectively disappears is plane; Respectively disappear in trace double wedge and be provided with air guide cavity, respectively disappear trace double wedge root end face on be respectively equipped with the root port communicated with air guide cavity, and conveyer belt is provided with some and each root port air inlet through hole one to one, respectively disappears on trace double wedge lateral surface, be respectively equipped with some steam vents communicated with air guide cavity by the top of the trace double wedge that disappears; Evenly distributed between described two delivery wheels, along conveyer belt direction have some spouts trace liquid nitrogen shower nozzle that disappears upward; The inner of described feeding web toward interior extension and near disappearing the conveyer belt of trace conveyer mechanism, and between the inner of feeding web and conveyer belt, be positioned at above foraminous conveyer and be provided with transition feeding slide plate.
In this programme, because each mesh being positioned at the epimere foraminous conveyer directly over conveyer belt is inserted with the trace double wedge that disappears respectively, and the end face of the trace double wedge that respectively disappears is from lower to upper through mesh, be positioned at the top of epimere foraminous conveyer, the end face of trace double wedge of respectively disappearing forms a supporting plane by above foraminous conveyer, and the area sum in the gap respectively disappeared between trace double wedge is much smaller than the area sum of the trace double wedge end face that respectively disappears, and when aquatic products are carried along feeding web toward foraminous conveyer, first aquatic products will be transported on the supporting plane that formed by the trace double wedge end face that respectively disappears, thus when scale is less or be placed in without scale fish products respectively disappear trace double wedge end face formed supporting plane on time, because fish products surface is very large with the contact area of the trace double wedge end face that respectively to disappear, now fish products can not produce impression on the surface or the impression that produces extremely shallow, and fish products is in the supporting plane transport process formed along the trace double wedge end face that respectively disappears, the trace liquid nitrogen shower nozzle that respectively disappears up sprays liquid nitrogen, this liquid nitrogen is ejected into the fish products that respectively disappears on trace double wedge end face on the surface by air inlet through hole, root port, air guide cavity and steam vent successively, carries out quick-frozen, sclerosis to the lower surface of fish products, thus the supporting plane formed by the trace double wedge end face that respectively disappears when fish products is sent to after on foraminous conveyer, because the lower surface (the fish products surface contacted with foraminous conveyer) of fish products is through quick-frozen, sclerosis, thus after this fish products is carried on foraminous conveyer, and the fish products contacted with foraminous conveyer in freezing process surface can not produce crisscross netted impression, when effective improvement adopts foraminous conveyer conveying scale less or efoliolate fish products, fish products after freezing easily produces the problem of crisscross netted impression on the surface, it can keep the original local flavor of fish products preferably, mouthfeel and quality.
As preferably, the area of the trace double wedge end face that respectively disappears be the aperture area of the mesh of foraminous conveyer 75% to 95% between.This programme structure ensures when fish products is placed on the supporting plane formed by the trace double wedge end face that respectively disappears, the trace double wedge end face that disappears that the trace double wedge that disappears can provide a large contact surface long-pending, ensures that fish products surface is large with the contact area of the trace double wedge end face that respectively disappears; Effective impression improving fish products surface and produce, the impression that fish products can not produce impression or generation is on the surface extremely shallow.
As preferably, in each air guide cavity, the taper air guide that is provided with toward root port direction projection of the air guide cavity inner top surface relative with root port is protruding.
As preferably, transition feeding slide plate is extended from feeding web obliquely toward conveyer belt direction, and the upper end of transition feeding slide plate is near the inner of feeding web, and the lower end of transition feeding slide plate extends to above conveyer belt.
As preferably, discharge outlet is provided with discharge bucket, the inner of discharge bucket near the end of foraminous conveyer, the outer end of discharge bucket through discharging opening, be positioned at outside discharging opening, and discharge bucket is extended outward obliquely by its inner.
As preferably, the relative both sides of foraminous conveyer are respectively equipped with the vertical backplate extended along foraminous conveyer direction.
As preferably, in refrigerating chamber, be positioned at above foraminous conveyer and be provided with some upper freezing liquid nitrogen shower nozzles be equally spaced along foraminous conveyer direction, and the spout of upper freezing liquid nitrogen shower nozzle is arranged down; In refrigerating chamber, between drive sprocket and driven sprocket, be provided with some lower freezing liquid nitrogen shower nozzles be equally spaced along foraminous conveyer direction, and the spout of lower freezing liquid nitrogen shower nozzle is arranged upward.
As preferably, upper freezing liquid nitrogen shower nozzle and lower freezing liquid nitrogen shower nozzle are in staggered distribution.
The invention has the beneficial effects as follows:
One, can effectively avoid the aquatic products such as fish in refrigerating process, easily mutually freezes together, is difficult to the problem of fractionation between each aquatic products;
Its two, effectively improve when adopting the less or efoliolate fish products of foraminous conveyer conveying scale, the fish products after freezing will produce the problem of darker crisscross netted impression on the surface; The original local flavor of fish products, mouthfeel and quality can be kept preferably.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of a kind of liquid nitrogen frozen tunnel machine in embodiments of the invention 1.
Fig. 2 is a kind of partial structurtes schematic diagram of the foraminous conveyer in embodiments of the invention 1.
The partial enlarged drawing at Fig. 3 to be Fig. 1 be middle A place.
Fig. 4 is that the foraminous conveyer in embodiments of the invention 1 matches with the trace double wedge that disappears and locates a kind of partial structurtes schematic diagram.
Fig. 5 is a kind of partial structurtes schematic diagram of the foraminous conveyer in embodiments of the invention 2.
Fig. 6 is that the foraminous conveyer in embodiments of the invention 2 matches with the trace double wedge that disappears and locates a kind of partial structurtes schematic diagram.
In figure: refrigerating chamber 1; Foraminous conveyer 2, epimere foraminous conveyer 2a, hypomere foraminous conveyer 2b, mesh sheet 21, rod 22, mesh 23; Upper freezing liquid nitrogen shower nozzle 3a, lower freezing liquid nitrogen shower nozzle 3b; Transition feeding slide plate 4; Charging aperture 5; Feeding web 6; Drive sprocket 7a, driven sprocket 7b; Conveyer belt 8, air inlet through hole 81; Disappear trace double wedge 9, air guide cavity 91, steam vent 92, air guide projection 93; Second bracing frame 10; Support underframe 11; Vibrator 12; Rubber cushion blocks 13; First bracing frame 14; Discharge bucket 15; Discharging opening 16; Vertical backplate 17; Disappear trace liquid nitrogen shower nozzle 18.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail:
Embodiment 1: as shown in Figure 1, a kind of liquid nitrogen frozen tunnel machine comprises refrigerating chamber 1, be arranged on the rubber cushion blocks 13 on refrigerating chamber bottom surface, be fixedly installed on the support underframe 11 above rubber cushion blocks, the trace conveyer mechanism that disappears being arranged on the wired belt conveyer above support underframe by the first bracing frame 14 and being arranged on by the second bracing frame 10 on support underframe.Support underframe is provided with four vibrators be equally spaced 12, and vibrator is positioned at below support underframe.The side of refrigerating chamber is provided with charging aperture 5, and relative opposite side is provided with discharging opening 16.
Wired belt conveyer comprises drive sprocket 7a, driven sprocket 7b and the foraminous conveyer 2 around drive sprocket and driven sprocket.Foraminous conveyer is extended from charging aperture toward discharging opening direction.Foraminous conveyer is horizontally disposed with.The length of foraminous conveyer is between 2 meters to 5 meters, and the length of the foraminous conveyer in the present embodiment is 2 meters or 3 meters or 4 meters or 5 meters.Foraminous conveyer comprises the epimere foraminous conveyer 2a be positioned at above drive sprocket and driven sprocket and the hypomere foraminous conveyer 2b be positioned at below drive sprocket and driven sprocket.
The relative both sides of foraminous conveyer are respectively equipped with the vertical backplate 17 extended along foraminous conveyer direction.In refrigerating chamber, be positioned at above foraminous conveyer and be provided with some upper freezing liquid nitrogen shower nozzle 3a be equally spaced along foraminous conveyer direction, and the spout of upper freezing liquid nitrogen shower nozzle is arranged down.In refrigerating chamber, some lower freezing liquid nitrogen shower nozzle 3b be equally spaced along foraminous conveyer direction are provided with between drive sprocket and driven sprocket, be specifically, in refrigerating chamber, between epimere foraminous conveyer and hypomere foraminous conveyer, be provided with some lower freezing liquid nitrogen shower nozzles be equally spaced along foraminous conveyer direction.The spout of lower freezing liquid nitrogen shower nozzle is arranged upward.Upper freezing liquid nitrogen shower nozzle and lower freezing liquid nitrogen shower nozzle are in staggered distribution.
As shown in Figure 2, the foraminous conveyer in the present embodiment is Great Wall guipure.Great Wall guipure is made up of some mesh sheet 21 and rod 22.Great Wall guipure has some mesh 23.Great Wall guipure is large mesh foraminous conveyer.It is large that Great Wall guipure has mesh area, and wire side is smooth, operates steadily, the feature that can not wander off.
As shown in Fig. 1, Fig. 3, Fig. 4, disappear trace conveyer mechanism between epimere foraminous conveyer and hypomere foraminous conveyer, and near charging aperture.The trace conveyer mechanism that disappears comprises two delivery wheels and the conveyer belt 8 around two delivery wheels, and the direction of transfer of conveyer belt is identical with the direction of transfer of foraminous conveyer.Conveyer belt is horizontally disposed with.The length of conveyer belt is between 0.5 meter to 1 meter, and the length of the conveyer belt in the present embodiment is 0.5 meter or 0.7 meter or 0.8 meter or 1 meter.Evenly distributed on the outer surface of conveyer belt have some disappear trace double wedges 9 suitable with the mesh 23 of foraminous conveyer 2, and each mesh being positioned at the epimere foraminous conveyer directly over conveyer belt is inserted with the trace double wedge that disappears respectively.The trace double wedge that disappears on the outer surface of conveyer belt is meshed with the mesh of foraminous conveyer.The end face of the trace double wedge that disappears in each mesh from lower to upper through mesh, and is positioned at the top of epimere foraminous conveyer.The height of projection of trace double wedge of respectively disappearing is identical, and the end face of the trace double wedge that respectively disappears is plane.The end face being positioned at the trace double wedge that respectively disappears above epimere foraminous conveyer forms a supporting plane above foraminous conveyer.The area of trace double wedge end face of respectively disappearing be the aperture area of the mesh of foraminous conveyer 75% to 95% between, the area of the trace double wedge end face that respectively disappears in this enforcement is 75% or 80% or 85% or 90% to 95% of the aperture area of the mesh of foraminous conveyer.
As shown in Figure 3, the sectional area of trace double wedge 9 of respectively disappearing is reduced from its root gradually toward end.Respectively disappear in trace double wedge and be provided with air guide cavity 91.Respectively disappear trace double wedge root end face on be respectively equipped with the root port communicated with air guide cavity, and conveyer belt is provided with some and each root port air inlet through hole 81 one to one.Respectively to disappear on trace double wedge lateral surface, be respectively equipped with four steam vents 92 communicated with air guide cavity by the top of the trace double wedge that disappears.In each air guide cavity, the air guide cavity inner top surface relative with root port be provided with taper air guide projection 93 toward root port direction projection.Evenly distributed between two delivery wheels, along conveyer belt direction have some spouts trace liquid nitrogen shower nozzle 18 that disappears upward.
As shown in Figure 1, charging aperture place is provided with feeding web 6.Feeding web is horizontally disposed with.This feeding web is positioned at above foraminous conveyer, and the direction of transfer of feeding web is identical with the direction of transfer of foraminous conveyer.The outer end of feeding web is positioned at outside charging aperture.The inner of feeding web is toward interior extension and be positioned at above foraminous conveyer, and specifically, the inner of feeding web is toward interior extension and near the conveyer belt of the trace conveyer mechanism that disappears.Between the inner of feeding web and conveyer belt, be positioned at above foraminous conveyer and be provided with transition feeding slide plate 4.Transition feeding slide plate is extended from feeding web obliquely toward conveyer belt direction.The upper end of transition feeding slide plate is near the inner of feeding web, and the lower end of transition feeding slide plate extends to above conveyer belt.
Discharge outlet is provided with discharge bucket 15.The inner of discharge bucket is near the end of foraminous conveyer.The outer end of discharge bucket is passed discharging opening, is positioned at outside discharging opening, and discharge bucket is extended outward obliquely by its inner.
The specific works process of the liquid nitrogen frozen tunnel machine in the present embodiment is as follows:
A, is laid on feeding web by aquatic products individual layer, is carried by aquatic products from feeding web in refrigerating chamber;
B, aquatic products are transported to along transition feeding slide plate on the supporting plane that is positioned at and formed above epimere foraminous conveyer, by the end face of the trace double wedge that respectively disappears.Because foraminous conveyer is Great Wall guipure, the aperture openings area of Great Wall guipure is large, and the area of the trace double wedge end face that respectively disappears is large, and the gap respectively disappeared between trace double wedge is much smaller than the area of the trace double wedge end face that respectively disappears; Thus when the scale in aquatic products is less or be placed in without scale fish products on the supporting plane that formed by the trace double wedge end face that respectively disappears, because fish products surface is very large with the contact area of the trace double wedge end face that respectively to disappear, now fish products can not produce impression on the surface or the impression that produces extremely shallow.
The transporting velocity of conveyer belt of trace conveyer mechanism of disappearing is identical with the transporting velocity of foraminous conveyer, thus ensure that foraminous conveyer and conveyer belt are in running, trace double wedge that conveyer belt respectively disappears can be meshed with the mesh of epimere foraminous conveyer (the trace double wedge that disappears of the part namely on conveyer belt can constantly snap in the mesh of epimere foraminous conveyer, and the trace double wedge that disappears of the another part on conveyer belt can constantly be deviate from by the mesh of epimere foraminous conveyer); In conveyer belt and foraminous conveyer running, the each mesh being positioned at the epimere foraminous conveyer directly over conveyer belt is inserted with the trace double wedge that disappears all the time respectively, and above foraminous conveyer, forms a supporting plane at the end face being positioned at the trace double wedge that respectively disappears above epimere foraminous conveyer.
In conveyer belt running, the supporting plane transmission that fish products is formed along the trace double wedge end face that respectively disappears; In the supporting plane transport process that fish products is formed along the trace double wedge end face that respectively disappears, the trace liquid nitrogen shower nozzle that respectively disappears up sprays liquid nitrogen, this liquid nitrogen is ejected on the fish products lower surface that respectively disappears on trace double wedge end face successively by air inlet through hole, root port, air guide cavity and steam vent, quick-frozen is carried out to the lower surface of fish products, the lower surface of fish products is hardened; Thus the supporting plane formed along the trace double wedge end face that respectively disappears when aquatic products is sent to after on foraminous conveyer, the fish products lower surface contacted with foraminous conveyer can not produce crisscross netted impression again, can keep the original local flavor of fish products, mouthfeel and quality preferably.
C, the supporting plane formed along the trace double wedge end face that respectively disappears when aquatic products is sent to after on foraminous conveyer, and aquatic products are carried along foraminous conveyer; And carry out freezing by upper freezing liquid nitrogen shower nozzle and lower freezing liquid nitrogen spray to aquatic products.
D, freezingly outside aquatic products to export along discharge bucket afterwards.
On the other hand, in the process that aquatic products are carried along conveyer belt and foraminous conveyer, conveyer belt and foraminous conveyer synchronous vibration can be driven by vibrator, and then drive the aquatic products on it constantly to vibrate, thus effectively avoid the aquatic products such as fish in refrigerating process, easily mutually freeze together, be difficult to the problem of fractionation between each aquatic products.
Embodiment 2, all the other structures of the present embodiment are with reference to embodiment 1, and its difference is:
As shown in Figure 5, Figure 6, the foraminous conveyer 2 in the present embodiment can also be set to B-mode guipure.B-mode guipure has a large amount of mesh 23.B-mode guipure is large mesh foraminous conveyer.It is large that B-mode guipure has mesh area, rotates the feature flexible, stationarity is good.
Claims (7)
1. a liquid nitrogen frozen tunnel machine, it is characterized in that, comprise refrigerating chamber (1), be arranged on the rubber cushion blocks (13) on refrigerating chamber bottom surface, be fixedly installed on the support underframe (11) above rubber cushion blocks, the trace conveyer mechanism that disappears being arranged on the wired belt conveyer above support underframe by the first bracing frame (14) and being arranged on by the second bracing frame (10) on support underframe, described support underframe is provided with at least one vibrator (12), the side of described refrigerating chamber is provided with charging aperture (5), relative opposite side is provided with discharging opening (16), described wired belt conveyer comprises drive sprocket, driven sprocket and the foraminous conveyer (2) around drive sprocket and driven sprocket, described foraminous conveyer is extended from charging aperture toward discharging opening direction, described charging aperture place is provided with feeding web (6), this feeding web is positioned at above foraminous conveyer, and the direction of transfer of feeding web is identical with the direction of transfer of foraminous conveyer, the outer end of feeding web is positioned at outside charging aperture, the inner of feeding web is toward interior extension, and be positioned at above foraminous conveyer,
Described foraminous conveyer comprises the epimere foraminous conveyer (2a) be positioned at above drive sprocket and driven sprocket and the hypomere foraminous conveyer (2b) be positioned at below drive sprocket and driven sprocket; The described trace conveyer mechanism that disappears is between epimere foraminous conveyer and hypomere foraminous conveyer, and close charging aperture; The described trace conveyer mechanism that disappears comprises two delivery wheels and the conveyer belt (8) around two delivery wheels, and the direction of transfer of conveyer belt is identical with the direction of transfer of foraminous conveyer; Evenly distributed on the outer surface of described conveyer belt have some disappear trace double wedges (9) suitable with the mesh (23) of foraminous conveyer (2), and each mesh being positioned at the epimere foraminous conveyer directly over conveyer belt is inserted with the trace double wedge that disappears respectively, the end face of the trace double wedge that disappears in each mesh is from lower to upper through mesh, and be positioned at the top of epimere foraminous conveyer, the height of projection of trace double wedge of respectively disappearing is identical, and the end face of the trace double wedge that respectively disappears is plane; Respectively disappear in trace double wedge and be provided with air guide cavity (91), respectively disappear trace double wedge root end face on be respectively equipped with the root port communicated with air guide cavity, and conveyer belt is provided with some and each root port air inlet through hole (81) one to one, respectively disappears on trace double wedge lateral surface, be respectively equipped with some steam vents (92) communicated with air guide cavity by the top of the trace double wedge that disappears; Evenly distributed between described two delivery wheels, along conveyer belt direction have some spouts trace liquid nitrogen shower nozzle (18) that disappears upward; The inner of described feeding web toward interior extension and near disappearing the conveyer belt of trace conveyer mechanism, and between the inner of feeding web and conveyer belt, be positioned at above foraminous conveyer and be provided with transition feeding slide plate (4);
Discharge outlet is provided with discharge bucket (15), and the inner of discharge bucket is near the end of foraminous conveyer, and the outer end of discharge bucket is passed discharging opening, is positioned at outside discharging opening, and discharge bucket is extended outward obliquely by its inner.
2. a kind of liquid nitrogen frozen tunnel machine according to claim 1, is characterized in that, the described area respectively disappearing trace double wedge end face be the aperture area of the mesh of foraminous conveyer 75% to 95% between.
3. a kind of liquid nitrogen frozen tunnel machine according to claim 1, is characterized in that, in each air guide cavity, the air guide cavity inner top surface relative with root port be provided with taper air guide projection (93) toward root port direction projection.
4. a kind of liquid nitrogen frozen tunnel machine according to claim 1 or 2 or 3, it is characterized in that, described transition feeding slide plate is extended from feeding web obliquely toward conveyer belt direction, the upper end of transition feeding slide plate is near the inner of feeding web, and the lower end of transition feeding slide plate extends to above conveyer belt.
5. a kind of liquid nitrogen frozen tunnel machine according to claim 1 or 2 or 3, is characterized in that, the relative both sides of described foraminous conveyer are respectively equipped with the vertical backplate extended along foraminous conveyer direction.
6. a kind of liquid nitrogen frozen tunnel machine according to claim 1 or 2 or 3, it is characterized in that, in described refrigerating chamber, be positioned at above foraminous conveyer and be provided with some upper freezing liquid nitrogen shower nozzles (3a) be equally spaced along foraminous conveyer direction, and the spout of upper freezing liquid nitrogen shower nozzle is arranged down; In refrigerating chamber, between drive sprocket and driven sprocket, be provided with some lower freezing liquid nitrogen shower nozzles (3b) be equally spaced along foraminous conveyer direction, and the spout of lower freezing liquid nitrogen shower nozzle is arranged upward.
7. a kind of liquid nitrogen frozen tunnel machine according to claim 6, is characterized in that, upper freezing liquid nitrogen shower nozzle and lower freezing liquid nitrogen shower nozzle are in staggered distribution.
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| CN201410254009.5A CN104146051B (en) | 2014-06-10 | 2014-06-10 | A kind of liquid nitrogen frozen tunnel machine |
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| CN201410254009.5A CN104146051B (en) | 2014-06-10 | 2014-06-10 | A kind of liquid nitrogen frozen tunnel machine |
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| CN104146051B true CN104146051B (en) | 2016-04-06 |
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| CN105815432B (en) * | 2016-03-17 | 2019-08-09 | 舟山凌然科技有限公司 | Split type liquid nitrogen tunnel freezer |
| CN109043292A (en) * | 2018-08-27 | 2018-12-21 | 安徽省皖美食品有限公司 | A kind of oscillatory type automated food quick-freezing plant |
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| CN109393006B (en) * | 2018-11-09 | 2021-11-23 | 浙江省海洋水产研究所 | Liquid nitrogen quick freezing equipment for portunids |
| CN110100872B (en) * | 2019-04-03 | 2022-04-22 | 浙江大学舟山海洋研究中心 | Aquatic product quality fidelity system and method |
| CN110089550B (en) * | 2019-04-03 | 2022-06-17 | 浙江大学舟山海洋研究中心 | Marine fish refrigeration structure and method |
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