Fixing device for litchi grafting

By designing a grafting tube and fixing device with drainage and ventilation functions, the problem of mold caused by water accumulation after lychee grafting was solved, the grafting survival rate and stability were improved, and the operation was simplified.

CN224205775UActive Publication Date: 2026-05-08HAINAN NONGKEN HONGMING FARM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HAINAN NONGKEN HONGMING FARM CO LTD
Filing Date
2025-05-26
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

After lychee grafting, water accumulation in the fixing device increases humidity, which can easily cause the scion to mold, affecting the growth and survival rate of the grafted seedling.

Method used

A fixing device including a grafting tube and a fixing base was designed. The bottom of the grafting tube has a drainage hole and a through hole. By rotating the grafting tube to align with or offset from the through hole, water can be drained and humidity can be controlled. Combined with the design of the ventilation hole and the tube cover, the humidity and oxygen requirements of the grafting environment are ensured.

Benefits of technology

It effectively prevents water accumulation and bacterial growth, improves the survival rate of grafting, enhances the stability and environmental friendliness of grafting, and simplifies the operation process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The fixing device comprises a grafting cylinder and a fixing seat, an inserting groove is formed in the fixing seat, an inserting plate is arranged at the bottom of the grafting cylinder, the inserting plate is movably inserted into the inserting groove, a first opening is formed in the bottom of the grafting cylinder, a drainage hole is formed in one side of the bottom of the grafting cylinder, and a second opening is formed in the other side of the bottom of the grafting cylinder. A first opening is formed in the top of the fixing seat, a second opening corresponding to the first opening is formed in the top of the fixing seat, a water collecting cavity is formed in the fixing seat, a first through hole matched with the drainage hole is formed in one side of the top of the fixing seat, the first through hole is communicated with the water collecting cavity, and a fixing mechanism is fixedly installed at the bottom end of the fixing seat. The grafting device has the advantages that the drainage hole is aligned with the first through hole by rotating the grafting cylinder, accumulated water in the grafting cylinder can be drained into the water collecting cavity, then the drainage hole and the first through hole are staggered by rotating the grafting cylinder, a large amount of accumulated water is prevented from being accumulated in the grafting cylinder, bacterium breeding is effectively avoided, and the grafting survival rate is increased.
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Description

Technical Field

[0001] This utility model relates to the technical field of grafting fixing devices, and in particular to a fixing device for grafting lychee. Background Technology

[0002] Lychee has the effects of calming the mind and soothing the nerves, strengthening the spleen and nourishing the liver, regulating blood lipids, and replenishing qi and blood. Therefore, the market demand is relatively high. In order to improve the fruit yield and production efficiency of lychee, grafting technology is used to improve the problems of low fruit yield and poor growth performance. Grafting is one of the artificial propagation methods of plants. It mainly uses branches or buds to graft them onto the rootstock of another plant, ensuring that the cambium layers of the rootstock and scion are close, so that the two plants can grow into a complete plant. Grafting methods are mostly divided into bud grafting and branch grafting. After a plant is injured, the wound can heal effectively. This function is used for asexual reproduction.

[0003] After grafting lychees, in order to ensure the survival rate of the graft, it is usually necessary to wrap the grafting site with plastic film to increase the tightness of contact between the rootstock and the scion. Alternatively, a grafting fixing device can be used to increase the tightness between the two. Due to the influence of air humidity and the airtightness of the fixing device, a large amount of water will accumulate inside the fixing device. This water accumulation will increase the humidity inside the fixing device, which can easily lead to mold growth on the scion and affect the growth of the grafted seedling to a certain extent. Utility Model Content

[0004] In view of the above-mentioned prior art, the present invention provides a fixing device for lychee grafting, which mainly solves the technical problems existing in the background art.

[0005] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows:

[0006] A fixing device for grafting litchi includes a grafting tube and a fixing base. The fixing base has a slot, and the bottom of the grafting tube has an insert plate that is movably inserted into the slot. The bottom of the grafting tube has a first opening, and one side of the bottom of the grafting tube has a drainage hole. The top of the fixing base has a second opening corresponding to the first opening. The fixing base has a water collection cavity, and one side of the top of the fixing base has a first through hole that matches the drainage hole and communicates with the water collection cavity. A fixing mechanism is fixedly installed at the bottom of the fixing base.

[0007] Preferably, the fixing mechanism includes a fastening screw and a fixing block. The side wall of the fixing seat is provided with two threaded through holes, and the fastening screw is provided in the threaded through holes. The fixing seat is provided with a groove near the second opening, and the fixing block is installed in the groove. The fastening screw is fixedly connected to the fixing block.

[0008] Preferably, the fixing block has a rubber gasket on the side away from the fastening screw.

[0009] Preferably, the height of the grafting tube is 15cm.

[0010] Preferably, a rootstock is inserted through the bottom of the grafting tube, and a scion is inserted at the top of the rootstock. The connection between the scion and the rootstock is fixed by a binding strap.

[0011] Preferably, the bottom of the fixing base is provided with a drain pipe, which is connected to the water collection cavity.

[0012] Preferably, the top end of the grafting tube is provided with a vent hole, which is located on one side of the top end of the grafting tube. A tube cover is rotatably installed on the top end of the grafting tube, and a second through hole adapted to the vent hole is provided on one side of the tube cover.

[0013] Preferably, the grafting tube and the outer side of the fixing seat are coated with an insect repellent.

[0014] Preferably, the bottom of the grafting tube has an inverted conical structure, and the top of the fixing seat is designed as an inverted conical curved surface that matches the inverted conical structure of the grafting tube.

[0015] The beneficial effects of this utility model are as follows: the fixing mechanism fixes the fixing seat on the rootstock for grafting, and then the grafting tube is inserted into the fixing seat. By rotating the grafting tube, the drainage hole is aligned with the first through hole, which can drain the water accumulated in the grafting tube into the water collection chamber. Then, by rotating the grafting tube again, the drainage hole is offset from the first through hole, which avoids a large amount of water accumulating in the grafting tube, effectively preventing the growth of bacteria and improving the survival rate of grafting. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a fixing device for lychee grafting in an embodiment of this application;

[0017] Figure 2 This is a front cross-sectional view of a fixing device for grafting lychee in an embodiment of this application;

[0018] Figure 3 This is a left cross-sectional view of a fixing device for lychee grafting in an embodiment of this application;

[0019] Figure 4 This is a cross-sectional view of the grafting tube in an embodiment of this application;

[0020] Figure 5 This is a cross-sectional view of the fixing base in an embodiment of this application;

[0021] Explanation of icon numbers:

[0022] 1. Grafting tube; 2. Fixing base; 3. Slot; 4. Insert plate; 5. First opening; 6. Drainage hole; 7. Second opening; 8. Water collection chamber; 9. First through hole; 10. Fixing mechanism; 101. Fastening screw; 102. Fixing block; 103. Threaded through hole; 11. Groove; 12. Rootstock; 13. Scion; 14. Binding band; 15. Drainage pipe; 16. Vent hole; 17. Tube cover; 18. Second through hole. Detailed Implementation

[0023] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in this specification of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. In the following description, the expression "some embodiments" refers to a subset of all possible embodiments; however, it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0024] It should also be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "inner," "outer," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0025] Example 1

[0026] Please refer to the attached document. Figure 1-5This application provides a fixing device for grafting litchi, including a grafting tube 1 and a fixing base 2. The fixing base 2 is provided with a slot 3. The bottom of the grafting tube 1 is provided with an insertion plate 4, which is movably inserted into the slot 3. The bottom of the grafting tube 1 is provided with a first opening 5, and a drainage hole 6 is provided on one side of the bottom of the grafting tube 1. The top of the fixing base 2 is provided with a second opening 7 corresponding to the first opening 5. The fixing base 2 is provided with a water collection cavity 8. The top side of the fixing base 2 is provided with a first through hole 9 adapted to the drainage hole 6. The first through hole 9 communicates with the water collection cavity 8. A fixing mechanism 10 is fixedly installed at the bottom end of the fixing base 2. During grafting, the fixing base 2 is fitted over the rootstock 12 and scion 13 through the second opening 7, and is clamped and fixed to the rootstock 12 by the fixing mechanism 10 at the bottom of the fixing base 2. Then, the grafting tube 1 is inserted into the slot 3 at the top of the fixing base 2 through the insert plate 4 at the bottom of the grafting tube 1. At the same time, the rootstock 12 passes through the first opening 5 and is located in the internal space of the grafting tube 1, completing the assembly of the grafting tube 1 and the fixing base 2. Compared with using plastic film or screw fixing devices to fix the grafting point, the grafting tube 1 has an independent space to store and manage the grafting point, providing a protective barrier and avoiding the erosion by insects and birds that are easily caused by plastic film wrapping, making it safer. At the same time, the grafting tube 1 is made of transparent material, which is convenient to see and can be reused. Using this method, resources are reused, making it more environmentally friendly. Initially, rotating the grafting tube 1 offsets the drainage hole 6 from the first through hole 9, ensuring the airtightness of the grafting tube 1 and preventing moisture loss at the grafting point. This ensures that the humidity inside the grafting tube 1 meets the grafting environment requirements, improving the grafting survival rate. When more and more water accumulates inside the grafting tube 1, rotating the grafting tube 1 aligns the drainage hole 6 with the first through hole 9. The accumulated water at the bottom of the grafting tube 1 flows into the water collection chamber 8 of the fixing base 2 through the drainage hole 6 and the first through hole 9. Then, rotating the grafting tube 1 again offsets the drainage hole 6 from the first through hole 9, ensuring that the humidity inside the grafting tube 1 meets the grafting environment requirements. At the same time, it prevents a large amount of water from accumulating inside the grafting tube 1, effectively preventing bacterial growth and improving the grafting survival rate.

[0027] Specifically, the fixing mechanism 10 includes a fastening screw 101 and a fixing block 102. The side wall of the fixing seat 2 has two threaded through holes 103, and the fastening screw 101 is disposed within each threaded through hole 103. The fixing seat 2 has a groove 11 near the second opening 7, and the fixing block 102 is installed within the groove 11. The fastening screw 101 is fixedly connected to the fixing block 102. By rotating the fastening screw 101 within the threaded through hole 103 of the fixing seat 2, the fixing block 102 within the groove 11 moves towards the rootstock 12, fixing the fixing seat 2 onto the rootstock 12. This fixing method is convenient, quick, simple to operate, low in technical requirements, and easy to learn. Preferably, the fixing block 102 has an arc-shaped structure, conforming to the shape of the rootstock 12, improving fixing stability.

[0028] Specifically, a rubber gasket is provided on the side of the fixing block 102 away from the fastening screw 101. By installing the rubber gasket on the fixing block 102, damage to the rootstock 12 by the fixing block 102 is avoided.

[0029] Specifically, the grafting tube 1 has a height of 15cm. The scion 13 used for lychee grafting is generally 4-8cm long. The height of the grafting tube 1 is set to 15cm to ensure the installation space of the scion 13 inside the grafting tube 1, while also ensuring the growth space of the scion 13.

[0030] Specifically, a rootstock 12 is inserted through the bottom of the grafting tube 1, and a scion 13 is inserted at the top of the rootstock 12. The connection between the scion 13 and the rootstock 12 is fixed by a tightening strap 14. Similarly, a rootstock 12 is inserted through the bottom of the fixing base 2, and a scion 13 is inserted at the top of the rootstock 12. The connection between the scion 13 and the rootstock 12 is fixed by a tightening strap 14. The tightening strap 14, through its elasticity, tightly secures the rootstock 12 and the scion 13 while also preventing, to some extent, from affecting the normal growth of the grafted seedling.

[0031] Specifically, the bottom of the fixing base 2 is provided with a drain pipe 15, which is connected to the water collection chamber 8. The drain pipe 15 at the bottom of the fixing base 2 drains the water in the water collection chamber 8, preventing excessive water accumulation in the water collection chamber 8, which would prevent the water in the grafting tube 1 from being drained, thereby increasing the humidity in the grafting tube 1 and reducing the grafting survival rate.

[0032] Example 2

[0033] Please refer to the appendix. Figure 1-5 The difference between this embodiment and Embodiment 1 is that the top of the grafting tube 1 is provided with a vent 16, which is located on one side of the top of the grafting tube 1. A tube cover 17 is rotatably installed on the top of the grafting tube 1, and a second through hole 18 adapted to the vent 16 is provided on one side of the tube cover 17. The tube cover 17 is provided on the top of the grafting tube 1, and the alignment or staggering of the vent 16 on the grafting tube 1 and the second through hole 18 on the tube cover 17 are used to ventilate and seal the grafting tube 1. The alignment of the vent 16 and the second through hole 18 allows outside air to enter the grafting tube 1, ensuring sufficient oxygen for callus formation at the grafting site. Once sufficient oxygen is available, the staggering of the vent 16 and the second through hole 18 creates a sealed space within the grafting tube 1, preventing excessive moisture evaporation and subsequent discharge through the vent 16, which would otherwise reduce the grafting survival rate.

[0034] Specifically, an insect repellent is applied to the outer surfaces of the grafting tube 1 and the fixing base 2. This insect repellent helps prevent insect infestation.

[0035] Specifically, the bottom of the grafting tube 1 is a conical structure, and the top of the fixing base 2 is designed as an inverted conical curved surface that matches the conical bottom of the grafting tube 1. By designing the bottom of the grafting tube 1 as an inverted conical structure, the accumulated water inside the grafting tube 1 is collected and drained into the drainage hole 6 located at the bottom, thereby improving drainage efficiency.

[0036] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the protection scope of the stated claims.

Claims

1. A fixing device for grafting litchi, characterized in that, The device includes a grafting tube and a fixing base. The fixing base has a slot, and the bottom of the grafting tube has an insert plate that is movably inserted into the slot. The bottom of the grafting tube has a first opening, and one side of the bottom of the grafting tube has a drainage hole. The top of the fixing base has a second opening corresponding to the first opening. The fixing base has a water collection cavity, and one side of the top of the fixing base has a first through hole that matches the drainage hole and communicates with the water collection cavity. A fixing mechanism is fixedly installed at the bottom of the fixing base.

2. The fixing device for grafting litchi according to claim 1, characterized in that, The fixing mechanism includes a fastening screw and a fixing block. The side wall of the fixing seat is provided with two threaded through holes, and the fastening screw is provided in the threaded through holes. The fixing seat is provided with a groove near the second opening, and the fixing block is installed in the groove. The fastening screw is fixedly connected to the fixing block.

3. The fixing device for grafting litchi according to claim 2, characterized in that, A rubber gasket is provided on the side of the fixing block away from the fastening screw.

4. The fixing device for grafting litchi according to claim 1, characterized in that, The grafting tube is 15cm high.

5. A fixing device for grafting litchi according to claim 1, characterized in that, The grafting tube has a rootstock inserted through its bottom end, and a scion is inserted at the top of the rootstock. The connection between the scion and the rootstock is fixed by a binding strap.

6. The fixing device for grafting litchi according to claim 1, characterized in that, The bottom of the fixed base is provided with a drain pipe, which is connected to the water collection cavity.

7. A fixing device for grafting litchi according to claim 1, characterized in that, The top of the grafting tube is provided with a vent hole, which is located on one side of the top of the grafting tube. A tube cover is rotatably installed on the top of the grafting tube, and a second through hole adapted to the vent hole is provided on one side of the tube cover.

8. A fixing device for grafting litchi according to claim 1, characterized in that, The grafting tube and the outer side of the fixing base are coated with an insect repellent.

9. A fixing device for grafting litchi according to claim 1, characterized in that, The bottom of the grafting tube has an inverted conical structure, and the top of the fixing seat is designed to be an inverted conical curved surface that matches the inverted conical structure of the grafting tube.