Preparation process of environment-friendly functional preservative

Abstract

The application discloses a kind of environmental protection functional preservative preparation process, comprising the following steps: one, a certain amount of edible alcohol is mixed with other ingredients to obtain preservative solution by stirring;Two, the water-absorbing paper is prepared into a long strip-shaped carrier, then a pattern is printed on the surface of the carrier, and finally a layer of plastic film is coated on the surface of the carrier;Three, the preservative solution obtained in step one is injected into the carrier in step two by injection mechanism, then the carrier is slitting and put into the packaging bag.The water-absorbing paper is prepared into a long strip-shaped carrier, the carrier is first patterned and coated, then the carrier is punched and injected with preservative solution.Compared with the traditional soaking method, the preservative solution on the carrier is locked by the film and is not easy to evaporate, thereby greatly reducing the loss of preservative solution, which is beneficial to the full use of preservative solution in food preservation, and improves the preservation effect of food.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of preservative preparation, in particular to an environmentally-friendly functional preservative preparation process. BACKGROUND

[0002] The alcohol preservative can form a certain concentration of gas phase protective layer around the food by releasing alcohol gas, so as to maintain the freshness of the food.

[0003] The alcohol preservative is prepared by using water-absorbing paper as a carrier, soaking the carrier in an alcohol preservative solution, and finally printing patterns and coating films on the carrier. Since the carrier cannot be immediately put into a packaging bag after the soaking process, and alcohol is prone to volatilization, a part of the preservative solution on the carrier will volatilize in the subsequent process, thereby reducing the content of the preservative solution on the carrier and failing to meet the food preservation requirements, which is not conducive to the preservation effect and quality of the food.

[0004] In view of the defects in the prior art, it is necessary to further improve it to meet the actual use. SUMMARY

[0005] The present application aims to at least solve one of the technical problems in the prior art or related art.

[0006] Therefore, the present application provides an environmentally-friendly functional preservative preparation process.

[0007] The present application provides an environmentally-friendly functional preservative preparation process, comprising the following steps:

[0008] I. A certain amount of edible alcohol is mixed with other ingredients and stirred to obtain a preservative solution.

[0009] II. The water-absorbing paper is prepared into a carrier in the form of a strip, then a pattern is printed on the surface of the carrier, and finally a layer of plastic film is coated on the surface of the carrier.

[0010] III. The preservative solution obtained in step I is injected into the carrier in step II by an injection mechanism, then the carrier is cut and put into a packaging bag.

[0011] The carrier is composed of a first water-absorbing paper strip and a second water-absorbing paper strip, and the opposite sides of the first and second water-absorbing paper strips are provided with first grooves, and the first grooves on the two are combined into a liquid collecting cavity.

[0012] The injection mechanism comprises a top plate and a bottom plate, and the bottom plate is provided with an injection needle penetrating therethrough, which is used to pierce the carrier and inject the injection liquid into the liquid collecting cavity.

[0013] The top surface of the top plate is bolted with a fresh-keeping liquid box body, and the fresh-keeping liquid box body is used to convey the fresh-keeping liquid into the injection needle;

[0014] The bottom end of the injection needle is spiky, and the wall body of the injection needle is provided with a liquid outlet groove for the flow of the injection liquid, and the liquid outlet groove runs through the entire injection needle.

[0015] Further, the first absorbent paper strip and the second absorbent paper strip are fixedly bonded together, and the overall thickness of both is 1 mm.

[0016] Further, the cross-section of the first groove is in a "U" shape, the whole is in a long strip shape, and its groove wall is in a wavy structure. At the same time, the groove height of the first groove is 0.5 mm.

[0017] Further, a group of symmetrically distributed guide rods are bolted to the bottom surface of the top plate, and a first hydraulic cylinder and a water pump are bolted to the bottom surface of the top plate;

[0018] The liquid inlet end and the liquid outlet end of the water pump are respectively thread-sealed and connected with a first connecting pipe and a second connecting pipe. The top end of the first connecting pipe penetrates through the top plate and is flange-sealed and connected to the wall body of the fresh-keeping liquid box body and is connected and communicated.

[0019] Further, a group of symmetrically distributed first through holes are opened on the bottom plate. The bottom plate is arranged parallel to the top plate, and a second hydraulic cylinder is bolted to the bottom plate;

[0020] Second through holes are arranged at equal intervals on the wall body of the bottom plate between the two first through holes;

[0021] A guide cylinder is inserted into the first through hole. The outer diameter of the guide cylinder is the same as the inner diameter of the first through hole, and they are welded to the inner wall of the first through hole;

[0022] A fixing cylinder is inserted into the second through hole. The outer diameter of the fixing cylinder is the same as the inner diameter of the second through hole, and they are welded to the inner wall of the second through hole.

[0023] Further, the bottom end of the guide rod is inserted into the guide cylinder. The outer diameter of the guide rod is the same as the inner diameter of the guide cylinder, and they are in a vertical state;

[0024] The two guide cylinders are welded and connected by a first cross plate, and the piston rod end of the first hydraulic cylinder is welded to the top surface of the first cross plate.

[0025] Further, an injection needle is inserted into the fixing cylinder, and its inner diameter is the same as the outer diameter of the injection needle. The top end of the injection needle is welded and connected with a second cross plate;

[0026] A hollow connecting column is welded to the bottom surface of the second cross plate. The piston rod end of the second hydraulic cylinder is inserted into the connecting column and welded with a connecting block. A elastic spring is welded between the connecting block and the inner wall of the bottom end of the connecting column.

[0027] Further, the bottom surfaces of the fixed cylinder, the guide cylinder, the bottom plate and the injection needle are flush, and a second groove is formed in the inner wall of the bottom end of the fixed cylinder;

[0028] The part of the injection needle inserted into the second groove is sleeved with a first limiting ring, the first limiting ring is welded and fixed on the injection needle, and the outer circular wall of the first limiting ring is attached to the groove wall of the second groove;

[0029] The cross section of the second groove is in the shape of a ring, and a second limiting ring is welded and connected to the inner wall of the second groove, the second limiting ring and the injection needle have the same center line, the inner diameter of the second limiting ring is greater than the outer diameter of the injection needle, and the distance between the second limiting ring and the first limiting ring is greater than 0.5mm and less than 1mm.

[0030] Further, the injection needle and the fixed cylinder are vertical, the injection needle is made of stainless steel, and the diameter of the injection needle is 1mm.

[0031] Further, the second transverse plate side wall is welded and connected with a liquid collecting strip, the liquid collecting strip is in the shape of a hollow long strip structure, and the side wall and the bottom surface are respectively threadedly sealed with a third communication pipe and a fourth communication pipe;

[0032] The end surface of the third communication pipe is sealed and bonded with one end of a rubber connecting hose, and the other end of the rubber connecting hose is sealed and bonded with the bottom end of the second communication pipe;

[0033] The fourth communication pipe penetrates the wall of the injection needle and is inserted into the liquid outlet hole groove, the fourth communication pipe is welded and connected with the wall of the injection needle, and the number of the fourth communication pipes is the same as that of the injection needles and corresponds to each injection needle.

[0034] The preparation process of the environment-friendly functional preservative has the following advantages:

[0035] The water-absorbing paper is prepared into a long strip-shaped carrier, the carrier is first pattern printed and coated, then the carrier is punched and injected with preservative, and finally the long strip-shaped carrier is cut into a sheet shape and put into a packaging bag, compared with the traditional soaking preservative method, since the injection of the preservative is carried out after the coating, the preservative on the carrier is locked by the film and is not easy to volatilize, thereby greatly reducing the loss of the preservative, which is beneficial to the full use of the preservative in food preservation, and improves the food preservation effect;

[0036] Meanwhile, the carrier is composed of a first water-absorbing paper strip and a second water-absorbing paper strip, and a liquid collecting cavity is formed between the first water-absorbing paper strip and the second water-absorbing paper strip, so that the preservative can be injected into the cavity, and the preservative can quickly spread into the first water-absorbing paper strip and the second water-absorbing paper strip, thereby improving the working efficiency of the preservative adsorption operation;

[0037] The carrier is prepared from raw wood pulp, which has good water absorption and is environmentally friendly, and is conducive to improving the safety of food. Attached Figure Description

[0038] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein

[0039] Figure 1 This is a schematic cross-sectional view of the carrier structure of the present invention;

[0040] Figure 2 This is a three-dimensional structural diagram of the first and second absorbent paper strips of the present invention;

[0041] Figure 3 This is a front view structural diagram of the injection mechanism of the present invention;

[0042] Figure 4 This is a side view of the injection mechanism of the present invention.

[0043] Figure 5 This is a three-dimensional structural diagram of the base plate, guide cylinder, and fixing cylinder of the present invention;

[0044] Figure 6 This is a cross-sectional view of the fixing cylinder and injection needle of the present invention;

[0045] Figure 7 This is a schematic cross-sectional view of the connecting column structure of the present invention;

[0046] In the diagram: 1. First absorbent paper strip; 2. Second absorbent paper strip; 3. First groove; 4. Liquid collection chamber; 5. Top plate; 6. Preservative liquid tank; 7. Guide rod; 8. Guide cylinder; 9. First horizontal plate; 10. First hydraulic cylinder; 11. Bottom plate; 12. Fixing cylinder; 13. Injection needle; 14. First through hole; 15. Second through hole; 16. Second horizontal plate; 17. Second hydraulic cylinder; 18. Water pump; 19. First connecting pipe; 20. Second connecting pipe; 21. Rubber connecting hose; 22. Liquid collection strip; 23. Third connecting pipe; 24. Fourth connecting pipe; 25. Second groove; 26. Liquid outlet groove; 27. First limiting ring; 28. Second limiting ring; 29. ​​Connecting column; 30. Connecting block; 31. Elastic spring. Detailed Implementation

[0047] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0048] In the following description, a lot of specific details are set forth in order to provide a thorough understanding of the present application, however, the present application can be practiced in other manners different from those described herein, therefore, the scope of protection of the present application is not limited by the specific embodiments disclosed below.

[0049] Please refer to Figures 1-7 The present application provides a technical solution: a preparation process of an environmental-friendly functional preservative, comprising the following steps:

[0050] I. A certain amount of edible alcohol is taken, mixed with other ingredients and stirred to obtain a preservative solution;

[0051] II. The water-absorbing paper is prepared into a carrier in the form of a strip, then a pattern with warning words is printed on the surface of the carrier, and finally a layer of plastic film is coated on the surface of the carrier, the plastic film being a PET film which is air-tight, so as to block the volatilization of the alcohol solution and ensure that the alcohol solution can fully act on food preservation, and the plastic film and the carrier are bonded, the structure is firm and not easy to fall off;

[0052] III. The preservative solution obtained in step I is injected into the carrier in step II through an injection mechanism, then the carrier is cut and put into a packaging bag.

[0053] The first water-absorbing paper strip 1 and the second water-absorbing paper strip 2 are fixedly bonded together, and the overall thickness of both is 1mm, the bonding agent between the first water-absorbing paper strip 1 and the second water-absorbing paper strip 2, and the bonding agent between the carrier and the plastic film are all food-grade hot melt adhesives, which are safe and environmentally friendly and ensure food hygiene;

[0054] The carrier is composed of the first water-absorbing paper strip 1 and the second water-absorbing paper strip 2, the opposite sides of the first water-absorbing paper strip 1 and the second water-absorbing paper strip 2 are both provided with first grooves 3, and the first grooves 3 on the two are combined into a liquid collecting cavity 4, the cross section of the first groove 3 is in the shape of "N", the overall shape is a strip, and the groove wall is in a wavy structure, and the groove height of the first groove 3 is 0.5mm, the design of the first groove 3 makes the liquid collecting cavity 4 a groove body with a height of 1mm, so that the alcohol solution can be injected in, and the alcohol solution can quickly spread on the first water-absorbing paper strip 1 and the second water-absorbing paper strip 2, and the shape design of the first groove 3 increases the area of the groove wall of the first groove 3, further speeds up the rate of the first water-absorbing paper strip 1 and the second water-absorbing paper strip 2 absorbing the alcohol solution, and the alcohol solution absorption work can be completed in a short time, which is conducive to improving the overall work efficiency;

[0055] The injection mechanism comprises a top plate 5 and a bottom plate 11, the bottom surface of the top plate 5 is bolted with a set of symmetrically distributed guide rods 7, the bottom surface of the top plate 5 is bolted with a first hydraulic cylinder 10, a set of symmetrically distributed first through holes 14 are formed on the bottom plate 11, guide cylinders 8 are inserted into the first through holes 14, the outer diameter of the guide cylinders 8 is consistent with the inner diameter of the first through holes 14, and the guide cylinders 8 are welded with the inner walls of the first through holes 14, the bottom ends of the guide rods 7 are inserted into the guide cylinders 8, the outer diameter of the guide rods 7 is consistent with the inner diameter of the guide cylinders 8, and the guide rods 7 and the guide cylinders 8 are vertically arranged, the two guide cylinders 8 are welded with a first horizontal plate 9, and the end of the piston rod of the first hydraulic cylinder 10 is welded with the top surface of the first horizontal plate 9, after the carrier printing and film coating operation is completed, the carrier can be conveyed to the injection mechanism by a conveyor, the top plate 5 can be fixed on the rack of the conveyor through four vertical columns, so that the overall structure is firm and stable, the guide cylinders 8 can move vertically along the axis of the guide rods 7, so that the bottom plate 11 can move vertically, during the operation, the first hydraulic cylinder 10 can be connected to the power supply, the first hydraulic cylinder 10 drives the first horizontal plate 9 to move downward through the piston rod, the first horizontal plate 9 drives the two guide cylinders 8 to move up and down on the guide rods 7, so that the guide cylinders 8 can drive the bottom plate 11 to move synchronously, since the bottom plate 11 is arranged in parallel with the top plate 5, the bottom plate 11 is always in a horizontal state during the movement, so that when the bottom plate 11 moves downward to the carrier, the carrier can be pressed, and the carrier will not be inclined during the subsequent puncture injection of the alcohol solution operation;

[0056] The second hydraulic cylinder 17 is bolted on the bottom plate 11, the second through hole 15 is arranged on the wall of the bottom plate 11 between the two first through holes 14, the fixed cylinder 12 is inserted into the second through hole 15, the outer diameter of the fixed cylinder 12 is consistent with the inner diameter of the second through hole 15, and the fixed cylinder 12 is welded with the inner wall of the second through hole 15, the injection needle 13 is inserted into the fixed cylinder 12, the inner diameter of the fixed cylinder 12 is consistent with the outer diameter of the injection needle 13, the top end of the injection needle 13 is welded with the second horizontal plate 16, the hollow connecting column 29 is welded on the bottom surface of the second horizontal plate 16, the piston rod end of the second hydraulic cylinder 17 is inserted into the connecting column 29 and welded with the connecting block 30, the connecting block 30 and the inner wall of the bottom end of the connecting column 29 are welded through the elastic spring 31, when the bottom plate 11 presses the carrier, the second hydraulic cylinder 17 can be powered to operate, the second hydraulic cylinder 17 can drive the second horizontal plate 16 to move downward, the second horizontal plate 16 can drive the injection needle 13 to move downward along the fixed cylinder 12, so that the injection needle 13 is inserted into the carrier from the fixed cylinder 12 and the alcohol solution can be injected into the carrier, the connecting block 30 is connected with the connecting column 29 through the elastic spring 31, the piston rod of the second hydraulic cylinder 17 can drive the connecting column 29 to move through the connecting block 30, the lifting adjustment of the second horizontal plate 16 is completed, and the piston rod of the second hydraulic cylinder 17 and the second horizontal plate 16 are elastically connected through the elastic spring 31, so that when the injection needle 13 stops moving, the elastic spring 31 can be compressed when the second hydraulic cylinder 17 continues to operate, the moving stroke of the second hydraulic cylinder 17 will not affect the moving range of the injection needle 13, so that the whole injection operation can be completed without high-precision hydraulic equipment, and the cost is greatly reduced.

[0057] The top plate 5 is bolted with a fresh-keeping liquid tank 6 for delivering fresh-keeping liquid into the injection needle 13. The bottom surface of the top plate 5 is bolted with a water pump 18. The inlet end and outlet end of the water pump 18 are respectively threadedly and sealingly connected with a first communication pipe 19 and a second communication pipe 20. The top end of the first communication pipe 19 penetrates through the top plate 5 and is sealingly connected with the wall flange of the fresh-keeping liquid tank 6 and is in communication. The side wall of the second transverse plate 16 is welded with a liquid collecting strip 22 which is in a hollow long strip structure. The side wall and bottom surface of the liquid collecting strip 22 are respectively threadedly and sealingly connected with a third communication pipe 23 and a fourth communication pipe 24. The end surface of the third communication pipe 23 is sealingly and adhesively connected with one end of a rubber connecting hose 21. The other end of the rubber connecting hose 21 is sealingly and adhesively connected with the bottom end of the second communication pipe 20. The fourth communication pipe 24 penetrates through the wall of the injection needle 13 and is inserted into the liquid outlet groove 26. The fourth communication pipe 24 is welded with the wall of the injection needle 13. The number of the fourth communication pipe 24 is the same as that of the injection needle 13 and they are one-to-one corresponding. The fresh-keeping liquid tank 6 is used for containing the prepared alcohol fresh-keeping solution. When the water pump 18 is powered on and runs, the alcohol fresh-keeping solution in the fresh-keeping liquid tank 6 can be pumped into the second communication pipe 20 through the first communication pipe 19, into the third communication pipe 23 through the rubber connecting hose 21, and finally into the liquid collecting strip 22. The alcohol fresh-keeping solution in the liquid collecting strip 22 flows into each injection needle 13 through the fourth communication pipe 24. In this way, the alcohol solution can be uniformly injected into the carrier through the multiple equidistantly distributed injection needles 13, so that the alcohol solution can diffuse to every part of the carrier, thereby improving the preparation quality of the preservative.

[0058] Since the liquid collecting strip 22 can move with the second transverse plate 16, the flexibility design of the rubber connecting hose 21 ensures that the second communication pipe 20 and the third communication pipe 23 are always in communication, so that the alcohol fresh-keeping solution can be stably delivered.

[0059] The bottom end of the injection needle 13 is in a sharp shape. The wall of the injection needle 13 is provided with a liquid outlet groove 26 for liquid flow. The liquid outlet groove 26 penetrates through the entire injection needle 13. The injection needle 13 and the fixed cylinder 12 are both vertical. The injection needle 13 is made of stainless steel and has a diameter of 1 mm. The injection needle 13 can move vertically. The material design makes it have great strength and hardness, so it can easily pierce the carrier and be inserted into the liquid collecting cavity 4. In this way, the alcohol fresh-keeping solution can be injected into the liquid collecting cavity 4 through the liquid outlet groove 26. The structure is reasonable. At the same time, the diameter design of the injection needle 13 not only facilitates piercing, but also leaves a small hole after piercing, so that only a small amount of alcohol solution on the carrier can evaporate, which does not affect the subsequent preservation effect.

[0060] The overall thickness of the first and second water-absorbing paper strips 1 and 2 is 1 mm, and the groove height of the first groove 3 is 0.5 mm, so that the thickness of the first and second water-absorbing paper strips 1 and 2 at the groove wall of the first groove 3 is 0.5 mm;

[0061] The bottom surfaces of the fixed cylinder 12, the guide cylinder 8, the bottom plate 11 and the injection needle 13 are flush, and the flush bottom surfaces ensure that the bottom plate 11 does not cause indentation of the carrier during the process of being attached to the carrier and pressing the carrier, so as to ensure the flat surface of the carrier and facilitate the normal performance of subsequent injection operations.

[0062] The second groove 25 is arranged on the inner wall of the bottom end of the fixed cylinder 12, the part of the injection needle 13 inserted into the second groove 25 is sleeved with the first limiting ring 27, the first limiting ring 27 is welded and fixed on the injection needle 13, the outer circular wall of the first limiting ring 27 is attached to the groove wall of the second groove 25, the cross section of the second groove 25 is in the shape of a ring, the second limiting ring 28 is welded and connected to the inner wall of the second groove 25, the second limiting ring 28 is coaxial with the injection needle 13, the inner diameter of the second limiting ring 28 is greater than the outer diameter of the injection needle 13, the distance between the second limiting ring 28 and the first limiting ring 27 is greater than 0.5 mm and less than 1 mm, when the injection needle 13 moves downward in the fixed cylinder 12, the first limiting ring 27 on the injection needle 13 will move in the second groove 25 until the first limiting ring 27 is attached to the second limiting ring 28, at this time, the injection needle 13 stops moving, and the distance between the first limiting ring 27 and the second limiting ring 28, i.e. the moving range of the injection needle 13, is between 0.5 mm and 1 mm, so as to ensure that the injection needle 13 can be inserted into the first groove 3 after puncturing the first water-absorbing paper strip 1 or the second water-absorbing paper strip 2, and facilitate the subsequent injection operation.

[0063] In the description of the present specification, the terms of "connection", "installation", "fixation" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, detachable connection or integral connection, and can be direct connection or indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0064] In the description of the present specification, the terms of "one embodiment", "some embodiments", "a specific embodiment" and the like mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0065] The above merely describes the preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A process for preparing an environmentally friendly functional preservative, characterized in that: It comprises the following steps: I, take a certain amount of edible alcohol, mixed with other ingredients for stirring, get preservative solution; II, the water-absorbing paper preparation in the form of a carrier, then print patterns on the surface of the carrier, and finally coated with a layer of plastic film on the surface of the carrier; III, the preservative solution obtained by step one is injected into the carrier in step two, then the carrier is cut and put into the packaging bag; The carrier is composed of a first water-absorbing paper strip (1) and a second water-absorbing paper strip (2), the opposite sides of the first water-absorbing paper strip (1) and the second water-absorbing paper strip (2) are provided with first grooves (3), and the first grooves (3) on the two are combined into a liquid collecting cavity (4); The injection mechanism comprises a top plate (5) and a bottom plate (11), the bottom plate (11) penetrates the injection needle (13), the injection needle (13) is used for puncturing the carrier and injecting the injection liquid into the liquid collecting cavity (4); The top plate (5) is bolted with a preservative solution tank (6) on the top surface, the preservative solution tank (6) is used for conveying the preservative solution into the injection needle (13); The bottom end of the injection needle (13) is sharp, and the wall of the injection needle (13) is provided with a liquid outlet groove (26) for the flow of injection liquid, the liquid outlet groove (26) penetrates through the whole injection needle (13).

2. The preparation process of the environment-friendly functional preservative according to claim 1, characterized in that: The first water-absorbing paper strip (1) and the second water-absorbing paper strip (2) are fixedly bonded as a whole, and the overall thickness of the two is 1mm.

3. The preparation process of the environment-friendly functional preservative according to claim 2, characterized in that: The cross section of the first groove (3) is "N" shaped, the whole is long strip shape, and the groove wall is wave structure, and the groove height of the first groove (3) is 0.5mm.

4. The preparation process of the environmentally friendly functional preservative according to claim 1, characterized in that: The bottom surface of the top plate (5) is bolted with a group of symmetrically distributed guide rods (7), the bottom surface of the top plate (5) is bolted with a first hydraulic cylinder (10) and a water pump (18); The inlet and outlet ends of the water pump (18) are respectively threadedly connected with a first communication pipe (19) and a second communication pipe (20), the top end of the first communication pipe (19) penetrates the top plate (5) and is connected with the wall flange of the preservative solution tank (6) and is connected in communication.

5. The preparation process of the environment-friendly functional preservative according to claim 4, characterized in that: A group of symmetrically distributed first through holes (14) are formed on the bottom plate (11), the bottom plate (11) is arranged in parallel with the top plate (5), and the second hydraulic cylinder (17) is bolted on the bottom plate (11); The wall of the bottom plate (11) between the two first through holes (14) is provided with a second through hole (15) which is distributed at equal intervals; The first through hole (14) is inserted with a guide cylinder (8), the outer diameter of the guide cylinder (8) is consistent with the inner diameter of the first through hole (14), and the guide cylinder (8) is welded with the inner wall of the first through hole (14); The second through hole (15) is inserted with a fixing cylinder (12), the outer diameter of the fixing cylinder (12) is consistent with the inner diameter of the second through hole (15), and the fixing cylinder (12) is welded with the inner wall of the second through hole (15).

6. The preparation process of the environment-friendly functional preservative according to claim 5, characterized in that: The bottom end of the guide rod (7) is inserted into the guide cylinder (8), the outer diameter of the guide rod (7) is consistent with the inner diameter of the guide cylinder (8), and the two are vertical; The two guide cylinders (8) are welded with the first horizontal plate (9), and the piston rod end of the first hydraulic cylinder (10) is welded with the top surface of the first horizontal plate (9).

7. The preparation process of the environment-friendly functional preservative according to claim 5, characterized in that: The fixed cylinder (12) is penetrated by a injection needle (13) with the same inner diameter as the outer diameter of the injection needle (13), and the top end of the injection needle (13) is welded with a second horizontal plate (16); The bottom surface of the second horizontal plate (16) is welded with a hollow connecting column (29), the piston rod end of the second hydraulic cylinder (17) is inserted into the connecting column (29) and welded with a connecting block (30), and the connecting block (30) and the bottom end inner wall of the connecting column (29) are welded by a elastic spring (31).

8. The preparation process of the environment-friendly functional preservative according to claim 7, characterized in that: The bottom surfaces of the fixed cylinder (12), the guide cylinder (8), the bottom plate (11) and the injection needle (13) are flush, and the bottom end inner wall of the fixed cylinder (12) is provided with a second groove (25); The part of the injection needle (13) inserted into the second groove (25) is sleeved with a first limiting ring (27), the first limiting ring (27) is welded on the injection needle (13), and the outer circular wall of the first limiting ring (27) and the groove wall of the second groove (25) are fitted; The second groove (25) is circular in cross section, and the second limiting ring (28) is welded on the inner wall of the second groove (25), the second limiting ring (28) and the injection needle (13) are coaxial, the inner diameter of the second limiting ring (28) is greater than the outer diameter of the injection needle (13), and the distance between the second limiting ring (28) and the first limiting ring (27) is greater than 0.5mm and less than 1mm.

9. The preparation process of the environment-friendly functional preservative according to claim 8, characterized in that: The injection needle (13) and the fixed cylinder (12) are vertical, the injection needle (13) is made of stainless steel, and the diameter of the injection needle (13) is 1mm.

10. The process for preparing the eco-friendly functional fresh-keeping agent according to claim 7, characterized in that: The side wall of the second horizontal plate (16) is welded with a liquid collecting strip (22), which is a hollow long strip structure, and the side wall and the bottom surface are respectively threadedly sealed with a third communication pipe (23) and a fourth communication pipe (24); The end surface of the third communication pipe (23) is sealed and bonded with one end of the rubber connecting hose (21), and the other end of the rubber connecting hose (21) is sealed and bonded with the bottom end of the second communication pipe (20); The fourth communication pipe (24) penetrates the wall of the injection needle (13) and is inserted into the liquid outlet hole (26), the fourth communication pipe (24) is welded with the wall of the injection needle (13), and the number of the fourth communication pipe (24) and the injection needle (13) is the same and corresponds one by one.

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