CN108651601A - A kind of automatic turning liquid nitrogen quick cooler - Google Patents

Abstract

The invention discloses a kind of automatic turning liquid nitrogen quick coolers, it is desirable to provide a kind of quick cooler directly applied on hull, the characteristic that can utilize the hull of floating across the sea that can shake, to improve aquatic products freezing uniformity and reduce energy consumption.It includes the Liquid Nitrogen Cooling Room being arranged on hull, and Liquid Nitrogen Cooling Room sets that there are two disengaging room doors；The main orbit being arranged on hull；Gravity conversion equipment, gravity conversion equipment include the first rack being arranged on hull, the first level shaft being rotatably arranged in the first rack, the support shaft being rotatably arranged in the first rack, are rotatably arranged on the connecting bushing on support shaft, the clump weight below connecting bushing, connection clump weight and the connecting rod of connecting bushing, the driving gear being arranged on connecting bushing and the driven gear for being arranged on first level shaft and being meshed with driving gear by unilateral bearing；And two spin refrigeration devices being arranged on main orbit.

Description

An automatic turning liquid nitrogen quick cooling device

technical field

The invention relates to a freezing device, in particular to an automatic overturning liquid nitrogen rapid cooling device.

Background technique

At present, the freezing methods applicable to aquatic products include air freezing method, brine immersion freezing method, plate freezing method and liquid nitrogen spray freezing method. Among many freezing and fresh-keeping technologies, liquid nitrogen quick-freezing technology has the best fresh-keeping effect. Liquid nitrogen quick-freezing technology has a fast freezing speed and a short freezing time, so that the largest ice crystal formation zone can be passed through in the shortest time to form evenly distributed fine ice crystals in the food tissue, which greatly reduces the damage to the food tissue structure and retains aquatic products to the greatest extent. freshness.

In the process of freezing aquatic products in the current liquid nitrogen quick-freezing equipment, the aquatic products are placed on the conveyor belt or fixedly placed on the sieve, and the aquatic products maintain a fixed position during the freezing process, which causes the various surfaces of the aquatic products to The uniformity of freezing is not good, thereby reducing the overall freezing efficiency and freezing quality of aquatic products.

On the other hand, although with the rapid development of liquid nitrogen quick-freezing technology, more and more aquatic enterprises have begun to configure liquid nitrogen quick-freezing processing production lines, but liquid nitrogen quick-freezing technology is directly applied to the first-line marine fishing and processing ships, and there is no research and development at home and abroad. Examples of applications.

Contents of the invention

The purpose of the present invention is to provide an automatic overturning liquid nitrogen rapid cooling device directly applied to the hull, which can improve the freezing uniformity of aquatic products and reduce the temperature of the automatic overturning liquid Energy consumption of nitrogen rapid cooling device.

Technical scheme of the present invention is:

An automatic overturning liquid nitrogen quick cooling device, comprising: a liquid nitrogen freezing chamber arranged on the hull, the liquid nitrogen freezing chamber is provided with two entry and exit doors, and the two entry and exit chamber doors are located on opposite sides of the liquid nitrogen freezing chamber; The main track arranged on the hull, the main track passes through the two entrance and exit doors, and the two ends of the main track are located outside the liquid nitrogen freezer; the gravity conversion device, the gravity switch includes a set on the hull and is located outside the liquid nitrogen freezer the first frame, rotate the first horizontal shaft that is arranged on the first frame and is perpendicular to the main track, rotate the support shaft that is arranged on the first frame and is parallel to the first horizontal shaft, and pass The one-way bearing rotates the connecting shaft sleeve arranged on the supporting shaft rod, the counterweight positioned under the connecting shaft sleeve, the connecting rod connecting the counterweight and the connecting shaft sleeve, the driving gear arranged on the connecting shaft sleeve and the A driven gear on a horizontal shaft and meshed with the driving gear, the outer diameter of the driving gear is larger than the outer diameter of the driven gear, and the side wall of the liquid nitrogen freezing chamber is provided with a first horizontal shaft through hole , one end of the first horizontal shaft passes through the hole of the first horizontal shaft and is located in the liquid nitrogen freezing chamber, and a spline sleeve is arranged on the first horizontal shaft and is located in the liquid nitrogen freezing chamber, and the spline sleeve and the first horizontal shaft The rods are coaxial; and two rotary freezing devices arranged on the main track, the rotary freezing device includes a lower seat slidingly arranged on the main track, an upper guide rail arranged on the lower seat and perpendicular to the main track, and a sliding seat arranged on the upper The upper sliding seat on the guide rail, the second frame arranged on the upper sliding seat, the second horizontal shaft rod which is rotatably arranged on the second frame and parallel to the upper guide rail, and several uniformly distributed circumferentially around the second horizontal shaft rod Place the net cylinder and connect the connecting rod for placing the net cylinder and the second horizontal shaft, the second horizontal shaft is at the same height as the first horizontal shaft, and one end of the second horizontal shaft is provided with a splined sleeve. The spline shaft is coaxial with the second horizontal shaft.

The automatic flipping liquid nitrogen quick cooling device of this scheme is directly applied to the hull, which can take advantage of the shaking characteristics of the hull floating on the sea to improve the freezing uniformity of aquatic products and reduce the energy consumption of the automatic flipping liquid nitrogen quick cooling device.

On the other hand, among the two rotary freezing devices of this program, when one of the rotary freezing devices is frozen in the liquid nitrogen freezing chamber, the other rotating freezing device is moved out to the outside of the liquid nitrogen freezing chamber, and the aquatic products to be frozen can be loaded. The operation of placing the mesh cylinder, thereby improving the overall efficiency of the freezing operation.

Preferably, the supporting shaft includes a first supporting shaft and a second supporting shaft which are rotatably arranged on the first frame and a clutch connecting the first supporting shaft and the second supporting shaft, and the first supporting shaft and the second supporting shaft are coaxial , the connecting sleeve is arranged on the first support shaft, and the driving gear is arranged on the second support shaft.

Preferably, the upper guide rail is provided with a first upper limit block and a second upper limit block, and the upper sliding seat is located between the first upper limit block and the second upper limit block.

Preferably, the upper sliding seat is provided with locking bolts for locking the upper sliding seat on the lower sliding seat, and the locking bolts are arranged vertically.

As a preference, a lower limit block is provided on the lower surface of the lower seat, and a positioning block that cooperates with the lower limit block is provided on the hull and located in the liquid nitrogen freezing chamber. When the lower limit block is against the positioning block, the spline sleeve Coaxial with the spline shaft.

Preferably, the axis of placing the net cylinder is parallel to the axis of the second horizontal shaft.

Preferably, the outer surface of the grid cylinder is provided with a material inlet and a door cover for sealing the material inlet.

Preferably, the outer diameter of the driving gear is greater than 6 times the outer diameter of the driven gear.

As a preference, several agitating plates are provided on the inner surface of the grid cylinder.

The beneficial effects of the present invention are: the automatic turning liquid nitrogen quick cooling device is directly applied to the hull, which can improve the freezing uniformity of aquatic products by utilizing the shaking characteristics of the ship floating on the sea surface, and reduce the speed of the automatic turning liquid nitrogen quick cooling device. energy consumption.

Description of drawings

Fig. 1 is a kind of structure schematic diagram of a kind of automatic turning liquid nitrogen rapid cooling device of the present invention.

Fig. 2 is a schematic diagram of a cross-sectional structure at A-A in Fig. 1 .

Fig. 3 is a schematic diagram of a cross-sectional structure at B-B in Fig. 1 .

Fig. 4 is a partially enlarged view of position C in Fig. 3 .

In the picture:

Liquid nitrogen freezer 1, access door 1.1;

main track 2;

Gravity conversion device 3, first support shaft 3.1, connecting shaft sleeve 3.2, clutch 3.3, second support shaft 3.4, driving gear 3.5, first horizontal shaft rod 3.6, spline sleeve 3.7, connecting rod 3.8, counterweight 3.9, Driven gear 3.10;

Rotary refrigeration device 4, lower seat 4.1, upper guide rail 4.2, upper sliding seat 4.3, lower limit block 4.4, locking bolt 4.5, first upper limit block 4.6, second upper limit block 4.7, second horizontal shaft 4.8, place Mesh cylinder 4.9, material inlet 4.91, door cover plate 4.92, stirring plate 4.93, spline shaft 4.10;

Locate block 5.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

As shown in Figure 1, an automatic flipping liquid nitrogen quick cooling device includes a liquid nitrogen freezing chamber 1 arranged on the hull, a main rail 2 arranged on the hull, a gravity conversion device 3 and two rails arranged on the main rail Spin freezer 4.

The liquid nitrogen freezing chamber is provided with two entrance and exit doors 1.1, and the two entrance and exit chamber doors are located on opposite sides of the liquid nitrogen freezing chamber.

The main track is set horizontally. The main track passes through the two access doors. The two ends of the main track are located outside the liquid nitrogen freezing chamber, and the two ends of the main track are located on opposite sides of the liquid nitrogen freezing chamber.

As shown in Figures 1 and 2, the gravity conversion device includes a first frame arranged on the hull and outside the liquid nitrogen freezer, and a first horizontal shaft that is rotated on the first frame and is perpendicular to the main track 3.6. Rotate the supporting shaft arranged on the first frame and parallel to the first horizontal shaft, and rotate the connecting shaft sleeve arranged on the supporting shaft through a one-way bearing 3.2. The counterweight located under the connecting shaft sleeve 3.9. The connecting rod 3.8 connecting the counterweight and the connecting bushing, the driving gear 3.5 arranged on the connecting bushing, and the driven gear 3.10 arranged on the first horizontal shaft and meshing with the driving gear.

The height of the position of the first horizontal shaft is lower than the height of the position of the supporting shaft.

The supporting shaft includes a first supporting shaft 3.1 rotatably arranged on the first frame, a second supporting shaft 3.4 rotatably arranged on the first frame, and a clutch 3.3 connecting the first supporting shaft and the second supporting shaft. The first support shaft is coaxial with the second support shaft. The connecting sleeve is arranged on the first supporting shaft. The driving gear is provided on the second support shaft. The outer diameter of the driving gear is larger than that of the driven gear. In this embodiment, the outer diameter of the driving gear is 9 times that of the driven gear.

A first horizontal shaft through hole is provided on the side wall of the liquid nitrogen freezing chamber facing the first horizontal shaft. One end of the first horizontal shaft passes through the hole of the first horizontal shaft and is located in the liquid nitrogen freezing chamber. A spline sleeve 3.7 is arranged on the first horizontal shaft rod and is located in the liquid nitrogen freezing chamber. The spline sleeve is coaxial with the first horizontal shaft.

As shown in Fig. 1, Fig. 3 and Fig. 4, the rotary freezing device includes a lower seat 4.1 slidably arranged on the main track, an upper guide rail 4.2 arranged on the lower seat and perpendicular to the main track, and an upper guide rail 4.2 slidably arranged on the upper guide rail. Upper sliding seat 4.3, the second frame arranged on the upper sliding seat, the second horizontal shaft 4.8 which is rotated and arranged on the second frame and parallel to the upper guide rail, and several evenly distributed circumferentially around the second horizontal shaft Net cylinder 4.9 and connect the connecting rod that places net cylinder and the second horizontal axis bar.

The second horizontal shaft is at the same height as the first horizontal shaft. One end of the second horizontal shaft is provided with a splined shaft 4.10 matched with the splined sleeve. The splined shaft is coaxial with the second horizontal shaft.

The upper slide is provided with locking bolts 4.5 for locking the upper slide on the lower slide. The locking bolt is arranged vertically, and the locking bolt is positioned above the lower seat.

The upper guide rail is provided with a first upper limit block 4.6 and a second upper limit block 4.7. The upper sliding seat is located between the first upper limit block and the second upper limit block.

The lower surface of the sliding seat is provided with a lower limit block 4.4. A positioning block 5 cooperating with the lower limit block is arranged on the hull and is located in the liquid nitrogen freezing chamber. When the lower limit block abuts on the positioning block, the spline sleeve is coaxial with the spline shaft.

The outer surface of the placed net cylinder is provided with a material inlet 4.91 and a door cover plate 4.92 for sealing the material inlet. The door cover plate is rotated and arranged on the outer surface of the net cylinder by a hinged shaft, and the hinged shaft is parallel to the horizontal shaft. A door lock catch is also provided between the door cover plate and the outer surface where the net cylinder is placed, and the door lock catch is used to fix the door cover plate on the outer surface where the net cylinder is placed. The axis of placing the net cylinder is parallel to the axis of the second horizontal shaft. The inner side of placing the net tube is provided with some stirring plates 4.93.

The specific work of the automatic overturning liquid nitrogen rapid cooling device of the present embodiment is as follows:

First, the first support shaft is separated from the second support shaft by a clutch;

Move the rotary freezer out to the outside of the liquid nitrogen freezer.

Second, put the aquatic products to be frozen (for example, shrimp, oysters, shellfish, etc.) into the placement net cylinder of a rotary freezer in the zone. Put it into the net cylinder through the material inlet; then, close the door cover.

Third, move the rotary freezing device with the aquatic products to be frozen into the liquid nitrogen freezing chamber through the main rail until the lower limit block touches the positioning block. At this time, the flowers of the rotary freezing device located in the liquid nitrogen freezing chamber The key shaft is coaxial with the spline sleeve;

Then, slide the upper slide along the upper guide rail to insert the spline shaft into the spline sleeve; then lock the upper slide on the lower slide through the locking bolts to prevent the upper slide from sliding along the upper guide rail;

Next, close the two entry and exit doors of the liquid nitrogen freezer.

Fourth, connect the first support shaft with the first support shaft through a clutch.

Fifth, pass liquid nitrogen into the quick-freezing chamber of the liquid nitrogen freezing chamber to freeze aquatic products. During this process:

Since the hull is floating on the sea surface, the hull will continue to shake under the action of waves; and during the shaking of the hull, the counterweight will swing back and forth around the first support axis (swing clockwise or counterclockwise around the first support axis).

Since the connecting bushing is rotated on the first support shaft through the one-way bearing, the one-way bearing can rotate freely in the clockwise direction around the first support shaft, but is locked in the counterclockwise direction as an example: When swinging clockwise around the first support shaft, the first support shaft does not rotate; when the counterweight swings counterclockwise around the first support shaft, the counterweight will drive the first shaft through the connecting rod, connecting bushing and one-way bearing. The support shaft rotates counterclockwise, and then the driving gear and the driven gear drive the placing net cylinder to rotate around the second horizontal shaft;

In addition, since the outer diameter of the driving gear is much larger than that of the driven gear, in the process of the counterweight swinging back and forth around the first support shaft, it will drive the net cylinder to move continuously around the second horizontal shaft at a certain speed. Rotation; during the rotation of the net cylinder, the aquatic products placed in the net cylinder will continue to roll, thereby improving the uniformity of freezing of aquatic products, and improving the overall freezing efficiency and quality of aquatic products.

The automatic flipping liquid nitrogen rapid cooling device of this embodiment is directly applied to the hull, which can use the characteristics of the shaking of the hull floating on the sea to drive the rotation of the placed net cylinder, thereby improving the uniformity of freezing of aquatic products.

On the other hand, the automatic flipping liquid nitrogen quick cooling device of this embodiment does not require additional power equipment and energy (such as motors and electric energy) to electrically place the mesh cylinder for rotation, which can effectively reduce the energy consumption of the automatic flipping liquid nitrogen quick cooling device, This makes a lot of sense when onboard energy is inherently limited.

In addition, in the fifth step, when one of the rotary freezing devices is frozen in the liquid nitrogen freezing chamber, the other rotating freezing device outside the liquid nitrogen freezing chamber can perform the operation of the second step, and put the aquatic products to be frozen into the In the net cylinder, thereby improving the efficiency of the overall freezing operation.

Sixth, when the aquatic products on the rotary freezing device in the liquid nitrogen freezing chamber are frozen, move the rotating freezing device located in the liquid nitrogen freezing chamber to the outside of the liquid nitrogen freezing chamber;

Next, another rotary freezing device is moved into the liquid nitrogen freezing chamber through the main rail to freeze the aquatic products.

Claims (9)

1. An automatic overturning liquid nitrogen rapid cooling device is characterized in that it comprises: A liquid nitrogen freezer installed on the hull, the liquid nitrogen freezer is provided with two entry and exit doors, and the two entry and exit doors are located on opposite sides of the liquid nitrogen freezer; The main track arranged on the hull, the main track passes through two entrance and exit doors, and the two ends of the main track are located outside the liquid nitrogen freezer; Gravity conversion device, the gravity conversion device includes a first frame arranged on the hull and located outside the liquid nitrogen freezer, a first horizontal shaft that is rotated on the first frame and perpendicular to the main track, and a first horizontal shaft that is rotated on the first frame. A supporting shaft on a frame parallel to the first horizontal shaft, a connecting shaft sleeve arranged on the supporting shaft through one-way bearing rotation, a counterweight located under the connecting shaft sleeve, a connecting counterweight and a connecting shaft The connecting rod of the shaft sleeve, the driving gear arranged on the connecting shaft sleeve and the driven gear arranged on the first horizontal shaft and meshed with the driving gear, the outer diameter of the driving gear is larger than the outer diameter of the driven gear, The side wall of the liquid nitrogen freezing chamber is provided with a first horizontal shaft through hole, and one end of the first horizontal shaft passes through the first horizontal shaft through hole and is located in the liquid nitrogen freezing chamber. A spline sleeve is arranged in the liquid nitrogen freezing chamber, and the spline sleeve is coaxial with the first horizontal shaft; and Two rotary freezing devices arranged on the main track, the rotary freezing device includes a lower seat slidably arranged on the main track, an upper guide rail arranged on the lower seat and perpendicular to the main track, an upper slide slidably arranged on the upper guide rail Seat, the second frame arranged on the upper sliding seat, the second horizontal shaft rod which is rotatably arranged on the second frame and parallel to the upper guide rail, a number of placing net tubes and connecting rods which are evenly distributed around the second horizontal shaft rod Place the connecting rod between the net cylinder and the second horizontal shaft. The second horizontal shaft is at the same height as the first horizontal shaft. One end of the second horizontal shaft is provided with a splined shaft that matches the spline sleeve. The key shaft is coaxial with the second horizontal shaft. 2. An automatic flipping liquid nitrogen rapid cooling device according to claim 1, characterized in that, the support shaft includes a first support shaft and a second support shaft that are rotatably arranged on the first frame and are connected to the second support shaft. A clutch of a support shaft and a second support shaft, the first support shaft and the second support shaft are coaxial, the connecting sleeve is arranged on the first support shaft, and the driving gear is arranged on the second support shaft. 3. An automatic flipping liquid nitrogen rapid cooling device according to claim 1, characterized in that, the upper guide rail is provided with a first upper limit block and a second upper limit block, and the upper sliding seat is located at the first Between the upper limit block and the second upper limit block. 4. An automatic flipping liquid nitrogen rapid cooling device according to claim 1, 2 or 3, characterized in that the upper sliding seat is provided with locking bolts for locking the upper sliding seat on the lower sliding seat , and the locking bolts are set vertically. 5. A kind of automatic flipping liquid nitrogen rapid cooling device according to claim 1, 2 or 3, characterized in that, the lower surface of the lower seat is provided with a lower limit block, and the hull is located on the liquid nitrogen freezer. A positioning block cooperating with the lower limit block is arranged indoors. When the lower limit block is against the positioning block, the spline sleeve and the spline shaft are coaxial. 6 . The automatic overturning liquid nitrogen rapid cooling device according to claim 1 , 2 or 3 , wherein the axis of the grid cylinder is parallel to the axis of the second horizontal shaft. 7 . 7. A kind of automatic flipping liquid nitrogen rapid cooling device according to claim 1, 2 or 3, characterized in that, the outer surface of the placed mesh cylinder is provided with a material inlet and a door for sealing the material inlet cover plate. 8. The automatic overturning liquid nitrogen rapid cooling device according to claim 1, 2 or 3, wherein the outer diameter of the driving gear is 6 times greater than the outer diameter of the driven gear. 9. The automatic overturning liquid nitrogen rapid cooling device according to claim 1, 2 or 3, wherein a plurality of stirring plates are provided on the inner surface of the grid cylinder.