Negative pressure type anti-backflow recovery device for plant stem flow liquid
By designing a negative pressure anti-backflow recovery device for plant stem sap, a cross bar and transmission components are used to generate negative pressure to extract the original sap from the loofah, solving the problems of sap waste and backflow during loofah water collection and achieving efficient and waste-free recovery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-03
- Publication Date
- 2026-04-03
AI Technical Summary
In the existing device, the continuously dripping loofah water is directly removed during the collection process, resulting in waste of the original liquid and posing a risk of backflow.
A negative pressure anti-backflow recovery device for plant stem sap is designed. By setting a cross rod, piston and transmission components in the recovery cylinder, the original sap of loofah is extracted using the principle of negative pressure, and the recovery port is blocked by a valve block to prevent backflow.
This approach reduces waste of raw material without affecting the reception of raw material, prevents backflow, and improves recovery efficiency and purity.
Smart Images

Figure CN224069355U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of agricultural tool technology, and relates to an anti-backflow recovery device, particularly a negative pressure anti-backflow recovery device for plant stem sap. Background Technology
[0002] Loofah water is a liquid extracted from loofah vines. No additives are added to this liquid. After simple processing and filtration, it is sold on the market. This liquid is called loofah extract.
[0003] A search revealed a Chinese patent document disclosing a sterile collection bag for loofah sap discharge [Application No.: 202421820378.1; Publication No.: CN 222827801 U]. This sterile collection bag for loofah sap discharge includes a main body with a support frame at its lower part. A partition is provided on the inner wall of the main body, and a first and second latch are respectively provided on the surface of the partition. A sleeve rod and a return spring are respectively provided on the inner wall of the main body. This sterile collection bag for loofah sap discharge uses two pressure rods that are slidably connected to the first and second latches. When the pressure plate is pressed, the pressure rods slide downwards, causing the first and second latches to slide away from each other on the surface of the partition. The stem cut is inserted into the bag. After the stem is removed, the two return springs cause the first and second latches to slide closer together on the surface of the partition and reset. This solves the technical problems of existing devices having excessively large bottle openings, poor sealing, and the nutrient-rich sap discharge easily leading to bacterial contamination.
[0004] Although this patent solves the technical problems of existing devices having excessively large bottle openings, poor sealing, and rich nutrient-rich sap that is prone to bacterial contamination, the continuous dripping of loofah water during the collection process means that directly removing and recycling the collection device would result in the waste of some of the original liquid. Utility Model Content
[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a negative pressure anti-backflow recovery device for plant stem sap. The technical problem this invention aims to solve is: how to extract the original sap from the bottle without affecting the bottle's ability to receive the original sap, thereby preventing backflow and reducing waste of the original sap.
[0006] The objective of this utility model can be achieved through the following technical solutions:
[0007] A negative pressure anti-backflow recovery device for plant stem sap includes a recovery cylinder and a recovery chamber inside the recovery cylinder. The recovery cylinder has a recovery port communicating with the recovery chamber. A recovery hose is fixedly connected to the recovery port. A valve block is slidably connected inside the recovery cylinder and is engaged with the recovery port to block it. A piston is slidably connected inside the recovery chamber. A cross rod is provided inside the recovery cylinder. The top end of the cross rod is rotatably connected to the piston. A transmission component is provided inside the recovery cylinder. The valve block and the cross rod are connected through the transmission component.
[0008] The working principle of this invention is as follows: A 45° angled cut is made at a height of 60-100cm above the ground (at the thickest part of the main vine of the loofah) to increase the sap outflow area. The cut is inserted into a bottle, with the vine extending about 5cm into the bottle for fixation. The bottle opening is sealed with plastic wrap to prevent rainwater and insects from entering. After standing for 12-24 hours, since the loofah juice continuously drips during harvesting, directly removing the bottle for recycling would waste some of the original liquid. Therefore, during the recycling process, a recycling hose can be directly inserted into the bottom of the bottle. Pulling the cross rod causes the piston to move, creating negative pressure and extracting the loofah juice from the bottle. Once the recycling chamber is full, the cross rod, in conjunction with the transmission component, blocks the recycling port with a valve block to prevent backflow and reduce waste. After extraction, the recycling hose is removed, and the recovered juice is injected into a storage tank for preservation, facilitating subsequent filtration and purification processes.
[0009] The transmission assembly includes a first transmission gear rotatably connected inside the recycling cylinder and a second transmission gear rotatably connected inside the recycling cylinder. The first and second transmission gears are connected to a transmission toothed belt, and the first transmission gear has a cross hole. The top of the cross rod passes through the cross hole. The first and second transmission bevel gears are rotatably connected inside the recycling cylinder. The first and second transmission bevel gears mesh with each other, and a drive screw is coaxially fixedly connected to the second transmission bevel gear. The drive screw is threadedly fixedly connected to the valve block.
[0010] Using the above structure, the rotation of the cross rod drives the first transmission gear to rotate. After the first transmission gear rotates, it drives the second transmission gear to rotate via the transmission belt. After the second transmission gear rotates, it drives the first transmission bevel gear to rotate. After the first transmission bevel gear rotates, it drives the second transmission bevel gear to rotate. After the second transmission bevel gear rotates, it drives the drive screw to rotate. After the drive screw rotates, it drives the valve block to move. After the valve block moves, it achieves a blocking engagement with the recovery port.
[0011] A filter screen is fixed inside the recycling hose.
[0012] With the above structure, large-mass impurities can be isolated during the extraction and recycling process through the filter screen, maintaining the relative purity of the recycled loofah water.
[0013] An operating block is fixed to the bottom end of the cross rod.
[0014] By adopting the above structure, the contact area during extraction can be increased through the operation block, thereby improving extraction efficiency.
[0015] The surface of the recycling cylinder is provided with anti-slip texture.
[0016] The above structure improves the stability of the hand when held by the user through the anti-slip texture, making it less likely to slip out of the hand.
[0017] Compared with existing technologies, this plant stem sap negative pressure anti-backflow recovery device has the following advantages:
[0018] 1. Directly removing the bottle for recycling will waste some of the original liquid. Therefore, during the recycling process, the recycling hose can be inserted directly into the bottom of the bottle. Then, pull the cross lever, which will move the piston to create negative pressure. This allows the loofah liquid in the bottle to be extracted without affecting the bottle's ability to receive the original liquid, thus reducing waste.
[0019] 2. By using a crossbar in conjunction with the transmission assembly, the valve block blocks the recovery port, preventing backflow and reducing waste of the original liquid. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this utility model.
[0021] Figure 2 This is a schematic diagram of the internal structure of the recycling cylinder in this utility model.
[0022] Figure 3 This is a three-dimensional structural diagram of the transmission gear in this utility model.
[0023] In the diagram, 1. Recycling cylinder; 2. Recycling chamber; 3. Recycling port; 4. Recycling hose; 5. Valve block; 6. Piston; 7. Cross rod; 8. Drive gear one; 9. Drive gear two; 10. Drive toothed belt; 11. Cross hole; 12. Drive bevel gear one; 13. Drive bevel gear two; 14. Drive screw; 15. Operating block. Detailed Implementation
[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0025] like Figures 1-3As shown, a negative pressure anti-backflow recovery device for plant stem sap includes a recovery cylinder 1, a recovery chamber 2 opened inside the recovery cylinder 1, a recovery port 3 connected to the recovery chamber 2 on the recovery cylinder 1, a recovery hose 4 fixedly connected to the recovery port 3, a valve block 5 slidably connected inside the recovery cylinder 1, and the valve block 5 and the recovery port 3 are in a blocking cooperation, a piston 6 slidably connected inside the recovery chamber 2, a cross rod 7 is provided inside the recovery cylinder 1, the top end of the cross rod 7 is rotatably connected to the piston 6, and a transmission assembly is provided inside the recovery cylinder 1, and the valve block 5 and the cross rod 7 are connected through the transmission assembly.
[0026] To increase the sap flow area, make a 45° angled cut at a point 60-100cm above the ground (on the thickest part of the main vine). Insert the cut into the bottle, extending the vine about 5cm into the bottle for fixation. Seal the bottle opening with plastic wrap to prevent rainwater and insects from entering. Let it stand for 12-24 hours. Since the loofah juice drips continuously during the harvesting process, directly removing the bottle for recycling would waste some of the original liquid. Therefore, during the recycling process, the recycling hose 4 can be directly inserted into the bottom of the bottle. Pulling the cross rod 7 will move the piston 6, creating negative pressure to extract the loofah juice from the bottle. When the recycling chamber 2 is full of original liquid, the cross rod 7, in conjunction with the transmission component, can block the recycling port 3 with the valve block 5 to prevent backflow and reduce waste. After extraction, remove the recycling hose 4 and inject the recovered original liquid into a storage tank for preservation, facilitating subsequent filtration, purification, and other processes.
[0027] The transmission assembly includes a transmission gear 8 and a transmission gear 9 rotatably connected inside the recycling cylinder 1. A transmission toothed belt 10 is connected to the transmission gear 8 and the transmission gear 9. A cross hole 11 is opened on the transmission gear 8. The top of the cross rod 7 passes through the cross hole 11. A transmission bevel gear 12 and a transmission bevel gear 13 are rotatably connected inside the recycling cylinder 1. The transmission bevel gear 12 and the transmission bevel gear 13 mesh with each other. A drive screw 14 is coaxially fixedly connected to the transmission bevel gear 13. The drive screw 14 is threadedly fixedly connected to the valve block 5.
[0028] With the above structure, the rotation of the cross rod 7 drives the first transmission gear 8 to rotate. After the first transmission gear 8 rotates, it drives the second transmission gear 9 to rotate through the transmission toothed belt 10. After the second transmission gear 9 rotates, it drives the first transmission bevel gear 12 to rotate. After the first transmission bevel gear 12 rotates, it drives the second transmission bevel gear 13 to rotate. After the second transmission bevel gear 13 rotates, it drives the drive screw 14 to rotate. After the drive screw 14 rotates, it drives the valve block 5 to move. After the valve block 5 moves, it achieves a blocking engagement with the recovery port 3.
[0029] A filter screen is fixed inside the recycling hose 4.
[0030] With the above structure, large-mass impurities can be isolated during the extraction and recycling process through the filter screen, maintaining the relative purity of the recycled loofah water.
[0031] An operating block 15 is fixed to the bottom end of the cross rod 7.
[0032] By adopting the above structure, the contact area during personnel extraction can be increased through the operation block 15, thereby improving extraction efficiency.
[0033] The surface of the recycling cylinder 1 is provided with anti-slip texture.
[0034] The above structure improves the stability of the hand when held by the user through the anti-slip texture, making it less likely to slip out of the hand.
[0035] The working principle of this invention is as follows: A 45° angled cut is made 60-100cm above the ground (at the thickest part of the main vine of the loofah) to increase the sap outflow area. The cut is inserted into the bottle, with the vine extending about 5cm into the bottle for fixation. The bottle opening is sealed with plastic wrap to prevent rainwater and insects from entering. After standing for 12-24 hours, during the sap recovery process, the recovery hose 4 is directly inserted into the bottom of the bottle. Pulling the cross lever 7 causes the piston 6 to move, creating negative pressure and drawing out the loofah sap from the bottle. Once the recovery chamber 2 is full of sap, it can be rotated again. The moving cross lever 7 rotates, which in turn drives the first transmission gear 8 to rotate. The rotation of the first transmission gear 8 then drives the second transmission gear 9 to rotate via the transmission belt 10. The rotation of the second transmission gear 9 then drives the first transmission bevel gear 12 to rotate. The rotation of the first transmission bevel gear 12 then drives the second transmission bevel gear 13 to rotate. The rotation of the second transmission bevel gear 13 then drives the drive screw 14 to rotate. The rotation of the drive screw 14 then drives the valve block 5 to move. The movement of the valve block 5 achieves a blocking engagement with the recovery port 3, preventing backflow.
[0036] In summary, by making a 45° angled cut at a point 60-100cm above the ground (at the thickest part of the main vine of the loofah), the surface area for sap flow is increased. The cut is inserted into the bottle, and the vine extends about 5cm into the bottle for fixation. The bottle opening is sealed with plastic wrap to prevent rainwater and insects from entering. After standing for 12-24 hours, since the loofah juice continues to drip during the harvesting process, directly removing the bottle for recycling would result in some waste of the original liquid. Therefore, during the recycling process, the recycling hose 4 can be directly inserted into the bottom of the bottle. At this time, the cross rod 7 is pulled, and the cross rod 7 drives the piston 6 to move, thereby generating negative pressure to extract the loofah juice from the bottle. When the original liquid in the recycling chamber 2 is full, the cross rod 7, in conjunction with the transmission component, can then block the valve block 3 to prevent backflow and reduce waste of the original liquid. After extraction, the recycling hose 4 is removed, and the recovered original liquid is injected into a storage tank for preservation, facilitating subsequent filtration, purification, and other processes.
[0037] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
Claims
1. A plant stem sap flow negative pressure type backflow prevention and recovery device, comprising a recovery cylinder (1) and a recovery cavity (2) formed in the recovery cylinder (1), characterized in that, The recycling cylinder (1) is provided with a recycling port (3) communicating with a recycling cavity (2), the recycling port (3) is fixedly connected with a recycling hose (4), the recycling cylinder (1) is slidably connected with a valve block (5), the valve block (5) is in plugging cooperation with the recycling port (3), the recycling cavity (2) is slidably connected with a piston (6), the recycling cylinder (1) is provided with a cross rod (7), the top end of the cross rod (7) is rotatably connected with the piston (6), and the recycling cylinder (1) is provided with a transmission assembly, the valve block (5) is connected with the cross rod (7) through the transmission assembly.
2. The plant stem sap flow negative pressure type backflow prevention and recovery device according to claim 1, characterized in that, The transmission assembly comprises a transmission gear one (8) rotatably connected in the recycling cylinder (1) and a transmission gear two (9) rotatably connected in the recycling cylinder (1), the transmission gear one (8) and the transmission gear two (9) are connected with a transmission tooth belt (10), the transmission gear one (8) is provided with a cross hole (11), the top of the cross rod (7) penetrates through the cross hole (11), the recycling cylinder (1) is rotatably connected with a transmission bevel gear one (12), the recycling cylinder (1) is rotatably connected with a transmission bevel gear two (13), the transmission bevel gear one (12) is in meshing with the transmission bevel gear two (13), and the transmission bevel gear two (13) is coaxially fixedly connected with a drive screw (14), and the drive screw (14) is threadedly fixedly connected with the valve block (5).
3. The plant stem sap flow negative pressure type backflow prevention and recovery device according to claim 1, characterized in that, The recycling hose (4) is fixedly connected with a filter screen.
4. The plant stem sap flow negative pressure type backflow prevention and recovery device according to claim 1, characterized in that, The bottom end of the cross rod (7) is fixedly connected with an operating block (15).
5. The plant stem sap flow negative pressure type backflow prevention and recovery device according to claim 1, characterized in that, The surface of the recycling cylinder (1) is provided with anti-skid lines. The surface of the recycling cylinder (1) is provided with anti-skid lines.
Citation Information
Patent Citations
Sterile collection bag for towel gourd bleeding sap
CN222827801U