CN111038854B

CN111038854B - Freshness-preserving box

Info

Publication number: CN111038854B
Application number: CN201911360135.8A
Authority: CN
Inventors: 施源德; 欧阳锐; 项雷文; 陈文韬; 肖忠信
Original assignee: Fujian Polytechnic Normal University
Current assignee: Fujian Polytechnic Normal University
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2025-02-25
Anticipated expiration: 2039-12-25
Also published as: CN111038854A

Abstract

The present invention relates to a preservative box. It comprises an inner tube, an outer tube, an upper end cover, and a lower end cover; the inner tube, the outer tube, the upper end cover and the lower end cover together constitute an inner cavity, and the preservative box also comprises a movable spacer, a limit stopper, and a barrier film; the movable spacer divides the inner cavity into an upper cavity and a lower cavity, and the limit stopper is arranged on the inner peripheral wall of the outer tube; the upper and lower ends of the inner tube are both connected to the outside; the lower cavity is filled with preservative microspheres, and the preservative microspheres include a wrapping layer, a preservative and a disintegrant, and the inner tube is provided with a water-passing hole; the barrier film is arranged on the outer periphery of the inner tube and the upper and lower ends are respectively fixedly sealed with the upper end cover and the movable spacer, and the movable spacer is provided with a gas-passing hole, and the gas-passing hole is smaller than the size of the preservative microsphere. The present invention can suspend the slow-release preservative in the upper part of the water body, improve the efficiency of the preservative, and when the preservative is exhausted, the slow-release box can automatically float up, prompting the operator to replace it in time, and has the characteristics of prompting function and convenient operation.

Description

Antistaling agent box

Technical Field

The invention relates to the field of preservation, in particular to a preservative box.

Background

At present, the fish caught in the ocean generally needs to be stored in water before being transported, sold and put into a low-temperature freezing warehouse, the living fish needs clean water quality, and the fresh fish can be self-dissolved and spoiled due to the actions of microorganisms, endogenous enzymes, exogenous enzymes and the like, so that the effects of bacteriostasis and water retention can be achieved by adding a certain nontoxic preservative, the freshness of the fish is increased, and the shelf life of the fresh fish is prolonged.

At present, enterprises mainly achieve the fresh-keeping effect by directly spraying the fresh-keeping agent, so that the use cost of the fresh-keeping agent is increased, and the effect and the effective time of the fresh-keeping agent are also reduced. Patent number CN201821817327.8 discloses a novel preservative box which is mainly used for fruits, vegetables and flowers, but is not suitable for preserving fish due to the structure and the material. The main reason is that when fish is mainly distributed in the middle and upper layers of the aqueous solution, if the preservative only floats on the surface or sinks to the water bottom, the slow release of the preservative can have obvious concentration gradient distribution in the aqueous solution, and the action efficiency of the preservative is obviously affected.

In addition, the existing preservation box cannot accurately judge whether the preservative is completely consumed or not in the use process, and does not have a prompting function.

Disclosure of Invention

The invention aims to overcome the defects and provide the preservative box which can suspend the preservative at the upper middle part in the water body and slowly release the preservative, so that the action efficiency of the preservative is improved, and when the preservative is consumed completely, the slow release box can automatically float to prompt an operator to replace in time, and has the characteristics of prompt function and convenient operation.

The preservative box is characterized by comprising a hollow inner tube, an outer tube sleeved on the periphery of the inner tube, an upper end cover, a lower end cover, a movable spacer ring, a limit stop and a barrier film, wherein the upper end cover is arranged between the outer tube and the upper end pipe orifice of the inner tube, and the lower end cover is detachably connected between the outer tube and the lower end pipe orifice of the inner tube;

the movable spacer rings are movably sleeved between the outer peripheral wall of the inner tube and the inner peripheral wall of the outer tube, the inner cavity is divided into an upper cavity positioned at the upper layer and a lower cavity positioned at the lower layer, and the movable spacer rings can slide up and down in the inner cavity;

The pipe orifices at the upper end and the lower end of the inner pipe are communicated with the outside; the inner part of the lower cavity is filled with fresh-keeping microspheres, the fresh-keeping microspheres comprise an external wrapping layer, a water-soluble fresh-keeping agent and a disintegrating agent, the water-soluble fresh-keeping agent and the disintegrating agent are filled in the inner cavity of the wrapping layer, the water-soluble fresh-keeping agent and the disintegrating agent react with water and generate gas, the wrapping layer is made of materials capable of slowly releasing the fresh-keeping agent and the disintegrating agent wrapped in the inner cavity when the wrapping layer contacts water, and a plurality of water through holes which are distributed between the lower part of the limit stop and the upper part of the lower end cover and penetrate through the wall of the inner pipe are arranged on the wall of the inner pipe so that the lower cavity is communicated with the hollow cavity of the inner pipe;

The barrier film is arranged around the outer periphery of the outer peripheral wall of the inner tube, the upper end and the lower end of the barrier film are respectively fixedly and hermetically connected with the inner peripheral edge of the bottom of the upper end cover and the inner peripheral edge of the top of the movable spacer ring, the barrier film can synchronously stretch downwards along with the up-and-down movement of the movable spacer ring and shield part of water passing through holes on the inner tube or shorten upwards and release the water passing through holes on the inner tube, the movable spacer ring is also provided with a plurality of gas passing through holes which penetrate through the upper plane and the lower plane and are used for facilitating gas generated by the reaction of the disintegrating agent and water to enter the upper cavity, and the aperture of the gas passing through holes is smaller than the particle size of the fresh-keeping microsphere.

The working principle and the working process are as follows:

1. The slow-release box is turned over, so that one end provided with the lower end cover is upward, the lower end cover is dismounted, fresh-keeping microspheres are filled in the lower cavity, the movable spacer ring slides downwards under the action of gravity and is limited by the limit stop to slide, and the upper end cover and the lower end cover are mounted after the lower cavity is filled.

2. The working principle of the preservative box is that one end of the slow-release box, which is provided with a lower end cover, is downwards placed in water, the preservative box has certain buoyancy due to the fact that a certain amount of air is stored in an upper cavity, the preservative box can suspend at the upper position of a water body under the action of gravity of the slow-release box, water can enter the hollow part of the inner tube from the lower end pipe orifice of the inner tube and flow into the lower cavity through a water through hole on the inner tube to react with preservative microspheres, the preservative slowly releases the efficacy outwards through the water through hole, gas generated by the disintegrating agent is ventilated to the inside of the upper cavity through the air through hole, the pressure in the upper cavity is gradually increased, the movable spacer ring can slide downwards relative to the limit stop block and downwards expand the space of the upper cavity under the action of air pressure, meanwhile, the movable spacer ring can drive the barrier film to be downwards elongated and shield part of the water through hole on the inner tube, the buoyancy of the preservative box is rapidly increased along with the exhaustion of the preservative microspheres, the slow-release box is automatically floated, and an operator is prompted to replace timely.

For better implementation of the present embodiment, the following optimization scheme is also provided:

preferably, the inside of the lower end cover is provided with a weight for keeping the lower end cover in a bottom state in water.

Preferably, the outer tube comprises an upper connecting tube with the upper end fixedly connected to the bottom of the upper end cover and a lower connecting tube in threaded fit connection with the lower end of the upper connecting tube, and the limit stop is arranged on the inner peripheral wall of the upper connecting tube and located at the middle-upper position of the vertical height of the inner cavity.

Preferably, the inner periphery of the lower end of the upper connecting pipe is provided with an internal thread, and the outer periphery of the upper end of the lower connecting pipe is provided with an external thread which is matched and connected with the internal thread of the upper connecting pipe;

The lower end cover comprises a cover body and a cover edge which is annularly arranged on the peripheral edge of the cover body and extends upwards, external threads are also arranged on the periphery of the lower end of the lower connecting pipe, internal threads which are matched and connected with the external threads of the lower end of the lower connecting pipe are arranged on the inner periphery of the cover edge of the lower end cover, inner pipe perforation which is uniformly matched with the shape and the size of the peripheral wall of the pipe opening at the lower end of the inner pipe is also arranged on the cover body of the lower end cover, the cover body of the lower end cover is sleeved on the periphery of the pipe opening at the lower end of the inner pipe, and the cover edge of the lower end cover is coated with the ring and is arranged on the periphery of the pipe opening at the lower end of the lower connecting pipe and connected with the threads of the lower end cover.

Preferably, a hollow filling cavity for filling heavy objects is further formed in the lower end cover, a filling channel which is communicated with the outside and between the filling cavity is formed in the cover body of the lower end cover, and a starting block for starting and stopping the filling channel is further connected to an outer opening of the filling channel. During the use, the amount of heavy particles in the filling cavity can be manually controlled to adjust the sedimentation height of the preservative box in water. The weight particles can be sand or steel balls, etc., wherein the opening block can be a threaded plug in threaded connection with the filling channel, or a wooden plug which is tightly fitted with the filling channel, etc.

Preferably, the limit stops are limiting blocks which are sequentially distributed at intervals along the same circumferential direction surrounding the inner pipe, and the number of the limiting blocks is 2-6.

Preferably, the limit stop is a limit ring circumferentially arranged along the same circumferential direction around the inner tube.

Preferably, the coating layer is made of a high polymer material, the preservative is nisin, and the disintegrating agent comprises polyethylene glycol, and low-substituted hydroxypropyl cellulose, sodium bicarbonate and tartaric acid which are coated by the polyethylene glycol.

Preferably, the wrapping layer is composed of polylactic acid.

Preferably, the barrier film is a plastic film, and the length of the barrier film in the vertical direction is longer than the distance between the upper end cover and the limit stop. The barrier film may also be made of an elastic material such as a rubber film or the like.

Preferably, the overall appearance of the preservation box is cylindrical.

Compared with the prior art, the invention has the beneficial effects that:

1. The invention provides a preservative box which can suspend in the middle upper part of a water body to slowly release a preservative, improves the action efficiency of the preservative, can automatically float when the preservative is consumed, prompts an operator to replace in time, and has the characteristics of prompt function and convenient operation.

2. The outer tube is formed by connecting the upper connecting tube with the lower connecting tube in a threaded manner, so that the slow-release box is convenient to assemble and disassemble.

3. The inside of the lower end cover is also provided with the filling cavity, the filling cavity is provided with the filling channel which is connected between the outside and the filling cavity, the opening and closing plug which is used for opening and closing the filling channel is also connected with the outer opening of the filling channel, and due to the design of the filling cavity, the quantity of heavy weight particles in the filling cavity can be manually controlled in the use process, so that the sedimentation height of the preservative box in water can be adjusted.

4. The invention has the advantages of recycling, energy conservation, environmental protection, convenient popularization and application, and the like.

Drawings

FIG. 1 is a schematic diagram illustrating a first usage state according to a first embodiment of the present invention;

FIG. 2 is a second schematic view of a first embodiment of the present invention;

FIG. 3 is a schematic view of the structure of the movable spacer ring according to the present invention;

FIG. 4 is a schematic structural diagram of the freshness-retaining microsphere according to the present invention;

fig. 5 is a schematic diagram illustrating a usage state of the second embodiment of the present invention.

The reference numbers indicate that the inner tube 1-, the water passing through hole 11-, the outer tube 2-, the upper connecting tube 21-, the lower connecting tube 22-, the upper end cover 3-, the lower end cover 4-, the cover 41-, the cover edge 42-, the inner tube perforation 43-44-filling cavity, the 45-filling channel, the 46-opening and closing, the weight 47-weight, the movable space ring 5-51-air passing through hole, the limit stop 6-7-blocking film, the fresh-keeping microsphere 8-, the fresh-keeping agent 81-82-disintegrating agent 83-wrapping layer, the inner cavity A1-upper cavity A2-lower cavity.

Detailed Description

The invention is described in detail below with reference to the accompanying drawings:

Embodiment one:

The invention discloses a preservative box, which is shown in figures 1-4 and is characterized by comprising a hollow inner tube 1, an outer tube 2 sleeved on the periphery of the inner tube 1, an upper end cover 3, a lower end cover 4 and a movable spacer ring 5, a limit stop 6 and a barrier film 7, wherein the upper end cover 3 is arranged between the outer tube 2 and the upper end opening of the inner tube 1 in a sealing manner, and the lower end cover 4 is detachably connected between the outer tube 2 and the lower end opening of the inner tube 1;

The movable spacing ring 5 is movably sleeved between the outer peripheral wall of the inner pipe 1 and the inner peripheral wall of the outer pipe 2, so that the inner cavity A is divided into an upper cavity A1 positioned at the upper layer and a lower cavity A2 positioned at the lower layer, and the movable spacing ring 5 can slide up and down in the inner cavity A;

The inner tube 1 comprises an inner tube 1, a lower cavity A2, a fresh-keeping microsphere 8, a water-soluble preservative 81 and a disintegrating agent, wherein the upper end opening and the lower end opening of the inner tube 1 are communicated with the outside, the fresh-keeping microsphere 8 comprises an outer wrapping layer 83, the water-soluble preservative 81 and the disintegrating agent which can react with water and generate gas are filled in the inner cavity of the wrapping layer 83, the wrapping layer 83 is made of materials capable of slowly releasing the preservative 81 and the disintegrating agent wrapped in the inner tube when contacting water, and a plurality of water through holes 11 which are distributed between the lower part of the limit stop 6 and the upper part of the lower end cover 4 and penetrate through the wall of the inner tube 1 are arranged on the wall of the inner tube 1 so that the lower cavity A2 is communicated with the hollow cavity of the inner tube 1;

The barrier film 7 is arranged around the outer periphery of the outer peripheral wall of the inner tube 1, the upper end and the lower end of the barrier film are respectively fixedly and hermetically connected with the inner peripheral edge of the bottom of the upper end cover 3 and the inner peripheral edge of the top of the movable spacer ring 5, the barrier film 7 can synchronously stretch downwards along with the up-and-down movement of the movable spacer ring 5 and shield part of the water passing through holes 11 on the inner tube 1 or shorten upwards and release the water passing through holes 11 on the inner tube 1, the movable spacer ring 5 is also provided with a plurality of gas passing through holes 51 which penetrate through the upper plane and the lower plane and are used for facilitating the gas generated by the reaction of the disintegrating agent 82 and water to enter the upper cavity A1, and the aperture of the gas passing through holes 51 is smaller than the particle size of the fresh-keeping microspheres 8.

Preferably, the inside of the lower end cap 4 is provided with a weight 47 for keeping the lower end cap 4 in a bottom state in water.

Preferably, the outer tube 2 comprises an upper connecting tube 21 with an upper end fixedly connected to the bottom of the upper end cover 3, and a lower connecting tube 22 in threaded fit connection with the lower end of the upper connecting tube 21, and the limit stop 6 is arranged on the inner peripheral wall of the upper connecting tube 21 and is positioned at an intermediate position of the vertical height of the inner cavity A.

Preferably, the inner periphery of the lower end of the upper connecting pipe 21 is provided with internal threads, and the outer periphery of the upper end of the lower connecting pipe 22 is provided with external threads which are matched and connected with the internal threads of the upper connecting pipe 21;

the lower end cover 4 comprises a cover body 41 and a cover edge 42 which is annularly arranged on the peripheral edge of the cover body 41 and extends upwards, external threads are also arranged on the periphery of the lower end of the lower connecting pipe 22, internal threads which are matched and connected with the external threads of the lower end of the lower connecting pipe 22 are arranged on the inner periphery of the cover edge 42 of the lower end cover 4, an inner pipe perforation 43 which is uniformly matched with the shape and the size of the peripheral wall of the lower end pipe orifice of the inner pipe 1 is also arranged on the cover body 41 of the lower end cover 4, the cover body 41 of the lower end cover 4 is sleeved on the periphery of the lower end pipe orifice of the inner pipe 1, and the cover edge 41 of the lower end cover 4 is coated on the periphery of the pipe orifice of the lower end of the lower connecting pipe 22 in a surrounding mode and is connected with the threads in a matching mode.

Preferably, the limit stops 6 are limit blocks which are sequentially and alternately distributed along the same circumferential direction surrounding the inner tube 1, and the number of the limit blocks is 2-6.

Preferably, the limit stop 6 is a limit ring circumferentially arranged in the same circumferential direction around the inner tube 1.

Preferably, the coating 83 is made of a polymer material, the preservative 81 is nisin, and the disintegrating agent 82 comprises polyethylene glycol, and low-substituted hydroxypropyl cellulose, sodium bicarbonate and tartaric acid coated by polyethylene glycol.

Preferably, the wrapping layer 83 is made of polylactic acid.

Preferably, the barrier film 7 is a plastic film, and the length of the barrier film 7 in the vertical direction is longer than the distance between the upper end cover 3 and the limit stop 6. The plastic film is integrally formed of PP plastic, and the barrier film 7 may be a film made of an elastic material, such as a rubber film, or the like.

Preferably, the overall appearance of the preservation box is cylindrical.

Embodiment two:

As shown in fig. 5, the difference between this embodiment and the first embodiment is that the lower end cover 4 is further provided with a hollow filling cavity 44 for filling heavy objects therein, the cover body of the lower end cover 4 is provided with a filling channel 45 communicating between the outside and the filling cavity 44, and an opening and closing plug 46 for opening and closing the filling channel 45 is further connected to the external opening of the filling channel 45. During use, the amount of weight particles in the filling chamber 44 can be manually controlled to adjust the sedimentation height of the box in the water. The weight particles may be sand or steel balls or the like, wherein the opening closure 46 may be a threaded plug that is threaded with the filling channel 45, or a wooden plug that fits tightly with the filling channel 45, or the like.

While the invention has been illustrated and described with respect to specific embodiments and alternatives thereof, it will be appreciated that various changes and modifications can be made therein without departing from the spirit of the invention. It is, therefore, to be understood that the invention is not to be in any way limited except by the appended claims and their equivalents.

Claims

1. A preservative box, characterized in that it comprises a hollow inner tube (1), an outer tube (2) sleeved on the outer circumference of the inner tube (1), an upper end cover (3) with a sealing cover arranged between the upper end openings of the outer tube (2) and the inner tube (1), and a lower end cover (4) which is detachable and connected between the outer tube (2) and the lower end openings of the inner tube (1); the outer circumferential wall of the inner tube (1), the inner circumferential wall of the outer tube (2), the upper end cover (3), and the lower end cover (4) together form an annular inner cavity (A), and the preservative box further comprises a movable spacer (5), a limit stopper (6), and a barrier film (7);

The movable spacer (5) is movably sleeved between the outer circumferential wall of the inner tube (1) and the inner circumferential wall of the outer tube (2), dividing the inner cavity (A) into an upper cavity (A1) located at the upper layer and a lower cavity (A2) located at the lower layer, and the movable spacer (5) can slide up and down in the inner cavity (A); the limit stopper (6) is fixedly arranged on the inner circumferential wall of the outer tube (2) to limit the upper sliding maximum position of the movable spacer (5);

The upper and lower ends of the inner tube (1) are both connected to the outside; the interior of the lower cavity (A2) is filled with fresh-keeping microspheres (8), the fresh-keeping microspheres (8) comprising an outer wrapping layer (83) and a water-soluble fresh-keeping agent (81) and a disintegrant capable of reacting with water and generating gas filled in the inner cavity of the wrapping layer (83); the wrapping layer (83) is made of a material capable of slowly releasing the fresh-keeping agent (81) and the disintegrant wrapped in the wrapping layer when in contact with water; the wall of the inner tube (1) is also provided with a plurality of water-through holes (11) distributed between the lower limit stopper (6) and the upper part of the lower end cover (4) and penetrating the wall of the inner tube (1) so as to connect the lower cavity (A2) with the hollow cavity of the inner tube (1);

The barrier film (7) is arranged around the outer circumference of the outer circumferential wall of the inner tube (1), and the upper and lower ends are respectively fixedly sealed and connected to the bottom inner circumferential edge of the upper end cover (3) and the top inner circumferential edge of the movable spacer (5), and the barrier film (7) can be synchronously stretched downward to block part of the water through holes (11) on the inner tube (1) or shortened upward to release the water through holes (11) on the inner tube (1) as the movable spacer (5) moves up and down; the movable spacer (5) is also provided with a plurality of gas through holes (51) penetrating the upper and lower planes for facilitating the gas generated by the reaction of the disintegrant (82) with water to enter the upper cavity (A1), and the aperture of the gas through holes (51) is smaller than the particle size of the fresh-keeping microspheres (8);

A weight (47) is arranged inside the lower end cover (4) for keeping the lower end cover (4) of the preservative box at the bottom in water;

The outer tube (2) comprises an upper tube (21) whose upper end is fixedly connected to the bottom of the upper end cover (3), and a lower tube (22) threadedly connected to the lower end of the upper tube (21), and the limit stopper (6) is arranged on the inner peripheral wall of the upper tube (21) and is located in the middle and upper position of the vertical height of the inner cavity (A).

2. The preservative box according to claim 1, characterized in that: the inner circumference of the lower end of the upper pipe (21) is provided with an internal thread, and the outer circumference of the upper end of the lower pipe (22) is provided with an external thread that matches and connects with the internal thread of the upper pipe (21);

The lower end cover (4) comprises a cover body (41) and a cover edge (42) arranged around the outer peripheral edge of the cover body (41) and extending upward. The outer peripheral edge of the lower end of the lower connecting pipe (22) is also provided with an external thread, and the inner peripheral edge of the cover edge (42) of the lower end cover (4) is provided with an internal thread that is matched and connected with the external thread of the lower end of the lower connecting pipe (22). The cover body (41) is also provided with an inner tube through hole (43) that matches the shape and size of the outer peripheral wall of the tube opening at the lower end of the inner tube (1). The cover body (41) of the lower end cover (4) is sleeved on the outer peripheral edge of the tube opening at the lower end of the inner tube (1), and the cover edge (42) of the lower end cover (4) covers the outer peripheral edge of the tube opening arranged around the lower end of the lower connecting pipe (22) and is matched and connected with the thread.

3. The preservative box according to claim 1 is characterized in that: a hollow filling cavity (44) for filling heavy particles is further provided inside the lower end cover (4), a filling channel (45) connecting the outside and the filling cavity (44) is opened on the cover body of the lower end cover (4), and an opening and closing plug (46) for opening and closing the filling channel (45) is also connected to the external opening of the filling channel (45).

4. The preservative box according to claim 1, characterized in that: the limit blocks (6) are limit blocks distributed in sequence and at intervals along the same circumferential direction surrounding the inner tube (1), and the number of the limit blocks is 2-6.

5. The preservative box according to claim 1, characterized in that: the limit stopper (6) is a limit ring arranged around the inner tube (1) along the same circumferential direction.

6. The preservative box according to claim 1, characterized in that: the wrapping layer (83) is made of a polymer material, the preservative (81) is nisin, and the disintegrant (82) includes polyethylene glycol, and low-substituted hydroxypropyl cellulose, sodium bicarbonate and tartaric acid wrapped by polyethylene glycol.

7. The preservative box according to claim 1, characterized in that: the wrapping layer (83) is made of polylactic acid.

8. The preservative box according to claim 1, characterized in that: the barrier film (7) is a plastic film, and the length of the barrier film (7) in the vertical direction is longer than the distance between the upper end cover (3) and the limit stopper (6).