A fluid feeding bottle cap structure

Abstract

This application discloses a liquid feeding bottle cap structure, relating to the technical field of automatic feeding devices. It includes a cap body comprising an inlet mounting part, an outlet mounting part, a connecting part, and an air inlet branch pipe. The inlet mounting part, outlet mounting part, and air inlet branch pipe are all fixedly connected to the connecting part. The connecting part has a guide cavity, and the inlet mounting part has a mounting hole communicating with the guide cavity. The mounting hole has an internal thread for connecting a feeding bottle or feeding bag. The outlet mounting part has an outlet hole communicating with the guide cavity for a conduit to pass through. The air inlet branch pipe has an air inlet hole communicating with the mounting hole. By providing the air inlet branch pipe and air inlet hole, air is introduced into the mounting hole through the air inlet hole, and then the air in the feeding bottle or feeding bag is replenished through the mounting hole, reducing the occurrence of low pressure in the feeding bottle or feeding bag. This ensures more uniform feeding of liquid medication or liquid food, reducing the safety hazards of liquid feeding.

Description

Technical Field

[0001] This application relates to the technical field of automatic feeding devices, and more specifically, to a fluid feeding bottle cap structure. Background Technology

[0002] In some medical conditions, patients are often unable to swallow food, such as those with laryngeal cancer, head trauma, other illnesses, or gastrointestinal metabolic disorders. Because these patients cannot swallow food smoothly, medical institutions often use nasogastric tubes or intestinal tubes to administer medication or food.

[0003] There is currently an automatic feeding device that uses a pump to deliver liquid medication or liquid food from a feeding box to the patient's stomach or intestines through a gastric tube or intestinal tube.

[0004] However, in the existing technology, when the automatic feeding device pumps in fluid by driving the pump, it will cause the feeding box to form a negative pressure, which will result in uneven feeding of fluid drugs or liquid food. Furthermore, when the negative pressure in the feeding box is too large, there may be a problem of fluid drugs or liquid food flowing back into the feeding box, which poses certain medical safety hazards. Summary of the Invention

[0005] To reduce the safety hazards of fluid feeding, this application provides a fluid feeding bottle cap structure.

[0006] This application provides a fluid feeding bottle cap structure, which adopts the following technical solution:

[0007] A liquid feeding bottle cap structure includes a cap body, the cap body including a feeding mounting part, a discharging mounting part, a connecting part and an air inlet branch pipe, wherein the feeding mounting part, the discharging mounting part and the air inlet branch pipe are all fixedly connected to the connecting part;

[0008] The connecting part is provided with a material guiding cavity, and the feeding mounting part is provided with a mounting hole communicating with the material guiding cavity. The mounting hole is provided with an internal thread for connecting a feeding bottle or feeding bag.

[0009] The discharge mounting part is provided with a discharge hole that communicates with the guide cavity, and the discharge hole is used for the guide tube to pass through;

[0010] The intake branch pipe is provided with an intake port that communicates with the mounting hole.

[0011] By using the above technical solution, an air inlet branch pipe and an air inlet are set up. When the discharge port is connected to the conduit and the main body of the box cover is connected to the feeding bottle or feeding bag, air can enter the mounting hole through the air inlet during the process of the conduit sucking up the liquid food or liquid medicine in the feeding bag or feeding bottle. Then, it is replenished to the feeding bottle or feeding bag through the mounting hole, reducing the occurrence of low pressure in the feeding bottle or feeding bag. This ensures that the feeding of liquid medicine or liquid food can be more uniform and reduces the safety hazards of liquid feeding.

[0012] Optionally, a filter membrane is provided inside the air inlet.

[0013] By using the above technical solution, a filter membrane is installed to filter impurities in the air, reducing the mixing of impurities during the fluid feeding process.

[0014] Optionally, the wall of the air inlet is provided with a connecting hole, which penetrates the air inlet branch pipe and communicates with the mounting hole;

[0015] The air inlet is provided with a one-way conduction component, which includes a one-way flexible component and a flexible limiting component. The one-way flexible component and the flexible limiting component are both disposed between the filter membrane and the connecting hole. The one-way flexible component is located on the side of the flexible limiting component away from the filter membrane.

[0016] The unidirectional flexible component is provided with a first flow hole, and the flexible limiting component is provided with a second flow hole. The projections of the second flow hole and the first flow hole on the axis of the air inlet are completely offset.

[0017] When the mounting hole is under negative pressure, the unidirectional flexible member tends to move away from the flexible restrictor. The first flow hole and the second flow hole are connected. The two sides of the unidirectional flexible member and the flexible restrictor that are far apart from each other are connected through the first flow hole and the second flow hole.

[0018] When the mounting hole is under positive pressure, the unidirectional flexible member tends to move closer to the flexible restrictor, and the first flow hole and the second flow hole are not connected to each other, and the two sides of the unidirectional flexible member and the flexible restrictor that are far apart from each other are not connected to each other.

[0019] By using the above technical solution, a one-way flow assembly is set up. When the mounting hole is under negative pressure, the first flow hole and the second flow hole are interconnected, allowing external air to enter the feed chamber. When the feed chamber is under positive pressure, the first flow hole and the second flow hole are not interconnected, preventing the air in the feed chamber from contacting the filter membrane through the one-way flow assembly when the user exhales. This reduces the occurrence of air carrying fluid adhering to the filter membrane, and reduces the situation where the filter membrane cannot allow air to pass through due to excessive fluid adhesion. This improves the stability of air passing through the filter membrane, thereby improving the stability of air intake in the intake manifold.

[0020] Optionally, the unidirectional flexible member has a flexible corrugated portion on the side near the flexible restrictor. The flexible corrugated portion includes several peaks and several troughs, and the several peaks and several troughs are arranged alternately in a radial direction away from the first flow hole on the outer periphery of the first flow hole.

[0021] When the mounting hole is under positive pressure, several of the wave crests abut against the side of the flexible restraint member facing the unidirectional flexible member.

[0022] When the mounting hole is under negative pressure, a gap is left between several of the wave crests and the side of the flexible restraint member closer to the unidirectional flexible member.

[0023] By using the above technical solution, a flexible corrugated part is set so that when there is positive pressure inside the mounting hole, the unidirectional flexible part and the flexible limiting part abut against each other through the crests, reducing the contact area between the unidirectional flexible part and the flexible limiting part. This can reduce the occurrence of the unidirectional flexible part sticking to the flexible limiting part and being unable to detach, reduce the occurrence of the intake manifold being unable to take in air, and improve the stability of the intake manifold.

[0024] Optionally, a fixed support plate is provided in the air inlet, and a first mounting ring groove is provided on the side of the fixed support plate away from the connecting hole. The unidirectional flexible component and the flexible limiting component are both installed in the first mounting ring groove. A communication gap is provided between the unidirectional flexible component and the bottom of the first mounting ring groove, which communicates with the first flow hole. A third flow hole is provided at the bottom of the first mounting ring groove, which communicates with the communication gap and the connecting hole.

[0025] The bottom of the first mounting ring groove is also provided with an abutment block, which is used for the unidirectional flexible component to abut against.

[0026] When the unidirectional flexible component abuts against the abutment block, a gap is left between the first flow hole and the abutment block.

[0027] By using the above technical solution, the abutment block is set up to reduce the occurrence of the first flow hole being blocked due to the unidirectional flexible part adhering to the bottom of the first mounting ring groove during the air intake process, thereby improving the air intake stability of the air intake process of the air intake branch pipe.

[0028] Optionally, a support block is provided on the side of the flexible restrictor away from the unidirectional flexible member, and the filter membrane abuts against the support block on the side facing the flexible restrictor, with a gap between the filter membrane and the unidirectional flexible member.

[0029] The above technical solution leaves a certain gap on both sides of the filter membrane, so that the filter membrane filters air not only the part directly opposite the second flow hole, but the entire filter membrane, thereby improving the utilization efficiency of the filter membrane.

[0030] Optionally, the air inlet is provided with a membrane cap, which is located on the side of the filter membrane near the air inlet opening. The membrane cap is used to restrict the filter membrane from detaching from the air inlet, and the membrane cap is provided with a plurality of fourth flow holes.

[0031] By using the above technical solution, a membrane cap is installed to improve the stability of the filter membrane installed in the air inlet.

[0032] Optionally, a cutting blade is provided in the mounting hole, which is used to cut the sealing film at the opening of the feeding box or the opening of the feeding bag.

[0033] The above technical solution facilitates the cutting of the sealing film at the opening of the feeding box or the feeding bag by the lid body, improving the convenience of connecting the lid body to the opening of the feeding box.

[0034] Optionally, a sealing ring seat is coaxially provided in the mounting hole. The sealing ring seat is located on the outer ring of the communicating hole, and the outer wall of the sealing ring seat is used to abut against the inner wall of the feeding box opening or the inner wall of the feeding bag opening.

[0035] By using the above technical solution, a sealing ring seat is set to improve the sealing performance of the connection between the lid body and the feeding box or feeding bag.

[0036] Optionally, a limiting rib is coaxially provided in the mounting hole. The limiting rib is provided between the inner ring of the mounting hole and the outer ring of the sealing ring seat. The limiting rib is used to abut against the end of the feeding box opening or the end of the feeding bag opening.

[0037] By using the above technical solution, restrictive ribs are set to improve the sealing of the connection between the lid body and the feeding box or feeding bag.

[0038] In summary, this application includes at least one of the following beneficial technical effects:

[0039] (1) By setting up an air inlet branch pipe and an air inlet hole, air is introduced into the mounting hole through the air inlet hole, and then the air in the feeding bottle or feeding bag is replenished through the mounting hole, reducing the occurrence of low pressure in the feeding bottle or feeding bag, thereby ensuring that the feeding of liquid drugs or liquid food can be more uniform and reducing the safety hazards of liquid feeding.

[0040] (2) By setting a one-way conduction component, the occurrence of air carrying fluid in the feed chamber adhering to the filter membrane is reduced, the occurrence of the filter membrane being unable to allow air to pass through due to excessive fluid adhering is reduced, the stability of air passing through the filter membrane is improved, and the stability of air intake in the intake branch pipe is improved.

[0041] (3) By setting up a flexible corrugated part, the contact area between the unidirectional flexible part and the flexible restrictor is reduced, thereby reducing the occurrence of the unidirectional flexible part adhering to the flexible restrictor and being unable to detach, reducing the occurrence of the intake manifold being unable to take in air, and improving the stability of the intake manifold. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the overall structure of this embodiment.

[0043] Figure 2 This is a cross-sectional view of the overall structure of this embodiment.

[0044] Figure 3 This is a schematic diagram of the overall structure of this embodiment, used to illustrate the structure of the puncture site.

[0045] Figure 4 This is a magnified schematic diagram of a partial structure in this embodiment.

[0046] Figure 5 This is an exploded view of the overall structure of this embodiment.

[0047] Reference numerals: 1. Box cover body; 101. Feeding installation part; 102. Discharge installation part; 103. Connecting part; 104. Air inlet branch pipe; 2. Mounting hole; 3. Discharge hole; 4. Guide chamber; 5. Air inlet hole; 6. Connecting hole; 7. Internal thread; 8. Cutting disc; 9. Sealing ring seat; 10. Restricting rib; 11. External thread; 12. Connecting groove; 13. Puncture port; 14. Membrane gland; 15. Filter membrane; 16. One-way conduction assembly; 17. One-way flexible component; 18. Flexible restricting component; 19. Fixed support plate; 10. First flow hole; 11. Flexible corrugated part; 12. Second flow hole; 23. Fixed ring seat; 24. Third flow hole; 25. Abutment block; 26. Filter mounting ring seat; 27. Support block; 28. Fourth flow hole. Detailed Implementation

[0048] The present application will be further described in detail below with reference to the accompanying drawings.

[0049] This application discloses a fluid feeding bottle cap structure.

[0050] Reference Figure 1The device includes a lid body 1, which comprises an integrally formed feeding mounting part 101, a discharging mounting part 102, a connecting part 103, and an air inlet branch pipe 104. The connecting part 103, the air inlet branch pipe 104, the feeding mounting part 101, and the discharging mounting part 102 are all cylindrical in shape. The feeding mounting part 101 and the discharging mounting part 102 are located at opposite axial ends of the connecting part 103, and are coaxially arranged with the connecting part 103. The air inlet branch pipe 104 is located on the circumferential sidewall of the connecting part 103, and its axis is perpendicular to the axis of the connecting part 103.

[0051] Reference Figure 1 and Figure 2 The feeding mounting part 101 has a mounting hole 2 coaxially formed at one end away from the connecting part 103. The discharging mounting part 102 has a discharging hole 3 coaxially formed at one end away from the connecting part 103. The connecting part 103 has a guide cavity 4 coaxially formed, which extends through both ends of the connecting part 103 along the axial direction, and the two ends of the guide cavity 4 are respectively connected to the mounting hole 2 and the discharging hole 3. The air inlet branch pipe 104 has an air inlet hole 5 coaxially formed at one end away from the connecting part 103. The air inlet hole 5 is a blind hole. The end of the hole wall of the air inlet hole 5 near the connecting part 103 has a connecting hole 6. The axis of the connecting hole 6 is perpendicular to the axis of the air inlet hole 5. The connecting hole 6 extends through the side wall between the feeding mounting part 101 and the air inlet branch pipe 104 in the direction close to the feeding mounting part 101 and communicates with the mounting hole 2.

[0052] Alternatively, the air inlet 5 can also be a through hole, which can directly penetrate the side wall of the connecting part 103 along the axis and communicate with the material guiding cavity 4. The air inlet 5 can communicate with the mounting hole 2 through the material guiding cavity 4.

[0053] Reference Figure 1 and Figure 2 An internal thread 7 is coaxially formed on the inner wall of the mounting hole 2. Two cutting blades 8 are fixedly connected to the bottom of the mounting hole 2. The two cutting blades 8 are symmetrically arranged about the axis of the guide cavity 4, and both cutting blades 8 are set on the outer ring of the connection between the guide cavity 4 and the bottom of the mounting hole 2. A sealing ring seat 9 is coaxially arranged on the bottom of the mounting hole 2. The sealing ring seat 9 is located on the outer side of the two cutting blades 8 and the connecting hole 6 in the radial direction of the mounting hole 2. A limiting rib 10 is coaxially fixed on the bottom of the mounting hole 2. The limiting rib 10 is annular, and there are two limiting ribs 10. The two limiting ribs 10 are the first rib and the second rib. The first rib and the second rib are both set in the radial direction between the inner wall of the mounting hole 2 and the outer peripheral wall of the sealing ring seat 9. The inner diameter of the first rib is larger than the outer diameter of the second rib, and the first rib is set on the outer ring of the second rib.

[0054] Reference Figure 2 and Figure 3The circumferential outer wall of the discharge mounting part 102 is coaxially provided with an external thread 11, which is used to connect with the thread on the guide tube. The end of the discharge mounting part 102 away from the connecting part 103 is also provided with four connecting grooves 12. The four connecting grooves 12 are evenly distributed circumferentially around the outer periphery of the discharge hole 3. The end of each connecting groove 12 near the discharge hole 3 penetrates through the outer peripheral wall of the discharge hole 3 and communicates with the discharge hole 3. The bottom of each connecting groove 12 penetrates through the end of the discharge mounting part 102 away from the connecting part 103 along the axial direction of the discharge hole 3 and communicates with the guide cavity 4, so that the four connecting grooves 12 and the opening of the discharge hole 3 form a piercing port 13 to facilitate the piercing mechanism on the guide tube to penetrate.

[0055] Alternatively, the puncture site 13 can also be a circular puncture hole.

[0056] Reference Figure 1 and Figure 2 In actual use, the feeding installation part 101 is used to connect to the mouth of the feeding bag or feeding bottle. The sealing film at the mouth of the feeding bag or the mouth of the feeding bottle is cut by the cutting blade 8, and the feeding installation part 101 is connected to the mouth of the feeding bag or the mouth of the feeding bottle through the internal thread 7. When the feeding installation part 101 is fully tightened to the mouth of the feeding bag or the mouth of the feeding bottle, the outer peripheral wall of the sealing ring seat 9 is used to press against the inner wall of the mouth of the feeding bag or the inner wall of the mouth of the feeding bottle, and the first rib and the second rib are used to press against the mouth of the feeding bag or the mouth of the feeding bottle, so as to achieve a seal between the mouth of the feeding bottle or the mouth of the feeding bag and the feeding installation part 101.

[0057] Reference Figure 2 and Figure 3 The discharge mounting part 102 is used for the insertion of the conduit and the connection of the conduit fixing mechanism. The puncture port 13 is used for the insertion of the puncture mechanism on the conduit. The external thread 11 is used for thread engagement with the fixing mechanism on the conduit, so that the conduit can be inserted into the guide cavity 4 and fixed to the discharge mounting part 102. The guide cavity 4 is used to guide the conduit so that it can be inserted into the feeding bag or feeding bottle. The air inlet 5, the connecting hole 6, and the mounting hole 2 are used to introduce air into the feeding bag or feeding bottle to ensure that the air pressure in the feeding bag or feeding bottle does not change significantly.

[0058] Reference Figure 2 and Figure 4 Inside the air inlet 5, along the axial direction towards the material guide chamber 4, a membrane cap 13, a filter membrane 14, a one-way conduction assembly 15, and a fixed support plate 16 are arranged sequentially. The membrane cap 13, the filter membrane 14, the one-way conduction assembly 15, and the fixed support plate 16 are arranged between the opening of the air inlet 5 and the connecting hole 6.

[0059] The unidirectional conduction assembly 15 includes a unidirectional flexible member 151 and a flexible restraint member 152. The unidirectional flexible member 151 is disposed close to the fixed support plate 16, and the flexible restraint member 152 is located on the side of the unidirectional flexible member 151 away from the fixed support plate 16.

[0060] Reference Figure 4 and Figure 5 The unidirectional flexible component 151 is made of rubber, and its projection along the axis of the air inlet 5 is annular. The axis of the unidirectional flexible component 151 coincides with the axis of the air inlet 5. A first flow hole 17 is coaxially formed on the unidirectional flexible component 151, and the first flow hole 17 penetrates the unidirectional flexible component 151 along the axial direction. A flexible corrugated portion 18 is integrally formed on the side of the unidirectional flexible component 151 near the flexible restraint component 152. The flexible corrugated portion 18 includes several peaks and several troughs, which are staggered in sequence along the radial direction of the unidirectional flexible component 151 away from the first flow hole 17 on the outer ring of the first flow hole 17.

[0061] Reference Figure 4 and Figure 5 The flexible limiting member 152 is made of plastic. A second flow hole 19 is provided on the end face of the flexible limiting member 152 facing the unidirectional flexible member 151. The axis of the second flow hole 19 is parallel to the axis of the first flow hole 17, and the second flow hole 19 completely penetrates the axial end face of the flexible limiting member 152 along its axis. The projections of the first flow hole 17 and the second flow hole 19 along the axis of the air inlet 5 are completely offset. When several peaks located between the first flow hole 17 and the second flow hole 19 abut against the end face of the flexible limiting member 152 facing the unidirectional flexible member 151, the first flow hole 17 and the second flow hole 19 are not connected to each other. When several peaks located between the first flow hole 17 and the second flow hole 19 do not abut against the end face of the flexible limiting member 152 facing the unidirectional flexible member 151, the first flow hole 17 and the second flow hole 19 are connected to each other.

[0062] Reference Figure 4 and Figure 5The fixed support plate 16 is a circular plate. A fixed ring seat 20 is integrally provided on the side of the fixed support plate 16 facing the unidirectional flexible member 151. The axis of the fixed ring seat 20 coincides with the axis of the fixed support plate 16. The outer peripheral wall of the fixed ring seat 20 is fixed to the inner wall of the air inlet 5. A first mounting ring groove is formed between the inner peripheral wall of the fixed ring seat 20 and the side of the fixed support plate 16 away from the connecting hole 6. The unidirectional flexible member 151 and the flexible limiting member 152 are both installed in the first mounting ring groove. A communication gap is provided between the side of the unidirectional flexible member 151 away from the flexible limiting member 152 and the side of the fixed support plate 16 facing the unidirectional flexible member 151. A plurality of third flow holes 21 are opened on the axial end face of the fixed support plate 16. The axis of each third flow hole 21 is parallel to the axis of the fixed support plate 16. Each third flow hole 21 completely penetrates the axial end face of the fixed support plate 16 along the axis. The plurality of third flow holes 21 are evenly distributed circumferentially on the axial end face of the fixed support plate 16. The connecting hole 6 and the flow gap are connected through several third flow holes 21. The end face of the fixed support plate 16 facing the unidirectional flexible member 151 is fixedly connected with a stop block 22 for the unidirectional flexible member 151 to abut against. When the unidirectional flexible member 151 abuts against the stop block 22, a gap is left between the first flow hole 17 and the stop block 22.

[0063] Reference Figure 4 and Figure 5 A filter mounting ring seat 23 is integrally provided on the side of the flexible restraint member 152 away from the unidirectional flexible member 151, and the axis of the filter mounting ring seat 23 coincides with the axis of the flexible restraint member 152. The outer peripheral wall of the filter mounting ring seat 23 abuts against the inner peripheral wall of the fixed ring seat 20, and a second mounting ring groove is formed between the inner peripheral wall of the filter mounting ring seat 23 and the end face of the flexible restraint member 152 away from the unidirectional flexible member 151. The filter membrane 14 is coaxially mounted in the second mounting ring groove. A support block 24 is fixed to the end face of the flexible restraint member 152 away from the unidirectional flexible member 151. The side of the filter membrane 14 facing the flexible restraint member 152 abuts against the support block 24, and a gap is left between the side of the filter membrane 14 facing the flexible restraint member 152 and the side of the flexible restraint member 152 facing the filter membrane 14.

[0064] Reference Figure 4 and Figure 5 The membrane cap 13 is installed in the second mounting ring groove, and the membrane cap 13 covers the side of the filter membrane 14 away from the flexible restraint member 152. A plurality of fourth flow holes 25 are provided on the axial end face of the membrane cap 13. The fourth flow holes 25 are fan-shaped holes, and the plurality of fourth flow holes 25 are evenly distributed circumferentially on the axial end face of the membrane cap 13. The two sides of the membrane cap 13 in the axial direction are connected through the fourth flow holes 25.

[0065] Reference Figure 2 and Figure 4In actual use, when the feeding installation part 101 is connected to the feeding bottle or feeding bag, and the discharging installation part 102 is connected to the conduit, when the conduit draws fluid from the feeding bottle or feeding bag, causing negative pressure in the installation hole 2, the peak of the unidirectional flexible member 151 moves away from the flexible restrictor 152 and the peak does not abut against the flexible restrictor 152. As a result, the first flow hole 17 and the second flow hole 19 are connected. External air enters the installation hole 2 through the opening of the air inlet 5, passing through the fourth flow hole 25, the filter membrane 14, the second flow hole 19, the first flow hole 17, the flow gap, the third flow hole 21, and the connecting hole 6 in sequence, replenishing the air in the installation hole 2. Then, the air in the feeding bottle or feeding bag is replenished through the installation hole 2, reducing the occurrence of low pressure in the feeding bottle or feeding bag, thereby ensuring that the feeding of fluid drugs or liquid food can be more uniform and reducing the safety hazards of fluid feeding. When the user exhales, causing positive pressure in the mounting hole 2 and the feeding bottle, the peaks on the unidirectional flexible member 151 move towards the flexible restraint member 152 and adhere to the side of the flexible restraint member 152 facing the unidirectional flexible member 151. This prevents the first flow hole 17 and the second flow hole 19 from communicating with each other, thereby reducing the contact between the air on the side of the unidirectional flexible member 151 away from the flexible restraint member 152 and the filter membrane 14. This also reduces the occurrence of contact between the air carrying fluid exiting the feeding bag or feeding bottle and the filter membrane 14, thereby reducing the occurrence of clogging of the filter membrane 14, improving the stability of the filter membrane 14 in filtering air, and thus improving the stability of air intake through the air inlet 5.

[0066] The working principle of this embodiment is as follows: air is introduced through the unidirectional conduit component 15, air inlet 5, connecting hole 6, and filter membrane 14 to supplement the air pressure in the feeding bottle or feeding bag connected to the feeding installation part 101, thereby reducing the occurrence of low pressure and improving the stability of fluid feeding.

[0067] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A liquid feeding bottle cap structure, characterized in that: The box cover body (1) includes a feeding installation part (101), a discharging installation part (102), a connecting part (103), and an air inlet branch pipe (104). The feeding installation part (101), the discharging installation part (102), and the air inlet branch pipe (104) are all fixedly connected to the connecting part (103). The connecting part (103) is provided with a guiding cavity (4), and the feeding installation part (101) is provided with an installation hole (2) communicating with the guiding cavity (4). The installation hole (2) is provided with an internal thread (7) for connecting a feeding bottle or a feeding bag. The discharge installation part (102) is provided with a discharge hole (3) communicating with the guide cavity (4), and the discharge hole (3) is used for the guide tube to pass through; The intake branch pipe (104) is provided with an intake hole (5) communicating with the mounting hole (2); the wall of the intake hole (5) is provided with a connecting hole (6), the connecting hole (6) penetrates the intake branch pipe (104) and communicates with the mounting hole (2); a one-way guiding component (15) is provided inside the intake hole (5), the one-way guiding component (15) includes a one-way flexible member (151) and a flexible restraining member (152). The unidirectional flexible member (151) is provided with a first flow hole (17), and the flexible limiting member (152) is provided with a second flow hole (19). The projections of the second flow hole (19) and the first flow hole (17) on the axis of the air inlet (5) are completely offset. The unidirectional flexible member (151) has a flexible corrugated portion (18) on the side near the flexible restrictor (152). The flexible corrugated portion (18) includes several peaks and several troughs. The several peaks and several troughs are arranged alternately in a radial direction away from the first flow hole (17) on the outer periphery of the first flow hole (17). The air inlet (5) is provided with a fixed support plate (16). The fixed support plate (16) is integrally provided with a fixed ring seat (20) on the side facing the unidirectional flexible member (151). The outer peripheral wall of the fixed ring seat (20) is fixed to the inner wall of the air inlet (5). A first mounting ring groove is formed between the inner peripheral wall of the fixed ring seat (20) and the side of the fixed support plate (16) away from the connecting hole (6). The unidirectional flexible member (151) and the flexible limiting member (152) are both installed in the first mounting ring groove. A communication gap is provided between the unidirectional flexible member (151) and the bottom of the first mounting ring groove, which communicates with the first flow hole (17). The bottom of the first mounting ring groove is provided with a third flow hole (21) that communicates with the communication gap and the connecting hole (6). The bottom of the first mounting ring groove is also provided with an abutment block (22), which is used for the unidirectional flexible component (151) to abut against; When the unidirectional flexible member (151) abuts against the abutment block (22), there is a gap between the first flow hole (17) and the abutment block (22).

2. The fluid feeding bottle cap structure according to claim 1, characterized in that: The air inlet (5) is equipped with a filter membrane (14).

3. The fluid feeding bottle cap structure according to claim 2, characterized in that: The unidirectional flexible member (151) and the flexible limiting member (152) are both disposed between the filter membrane (14) and the connecting hole (6), and the unidirectional flexible member (151) is located on the side of the flexible limiting member (152) away from the filter membrane (14); When the mounting hole (2) is under negative pressure, the unidirectional flexible member (151) tends to move away from the flexible restrictor (152). The first flow hole (17) and the second flow hole (19) are connected. The two sides of the unidirectional flexible member (151) and the flexible restrictor (152) that are far apart from each other are connected through the first flow hole (17) and the second flow hole (19). When the mounting hole (2) is under positive pressure, the unidirectional flexible member (151) tends to move closer to the flexible restrictor (152), and the first flow hole (17) and the second flow hole (19) are not connected to each other. The two sides of the unidirectional flexible member (151) and the flexible restrictor (152) that are far apart from each other are not connected to each other.

4. The fluid feeding bottle cap structure according to claim 3, characterized in that: When the mounting hole (2) is under positive pressure, several of the wave crests abut against the side of the flexible restraint (152) facing the unidirectional flexible member (151); when the mounting hole (2) is under negative pressure, a gap is left between several of the wave crests and the side of the flexible restraint (152) near the unidirectional flexible member (151).

5. The fluid feeding bottle cap structure according to claim 3, characterized in that: The flexible limiting member (152) has a support block (24) on the side away from the unidirectional flexible member (151), and the filter membrane (14) abuts against the support block (24) on the side facing the flexible limiting member (152), with a gap between the filter membrane (14) and the unidirectional flexible member (151).

6. The fluid feeding bottle cap structure according to claim 2, characterized in that: The air inlet (5) is provided with a membrane cap (13), which is located on the side of the filter membrane (14) near the opening of the air inlet (5). The membrane cap (13) is used to restrict the filter membrane (14) from detaching from the air inlet (5). The membrane cap (13) is provided with a plurality of fourth flow holes (25).

7. The fluid feeding bottle cap structure according to claim 1, characterized in that: The mounting hole (2) is provided with a cutting blade (8), which is used to cut the sealing film at the opening of the feeding box or the opening of the feeding bag.

8. The fluid feeding bottle cap structure according to claim 1, characterized in that: A sealing ring seat (9) is coaxially provided in the mounting hole (2). The sealing ring seat (9) is located on the outer ring of the connecting hole (6). The outer wall of the sealing ring seat (9) is used to abut against the inner wall of the feeding box opening or the inner wall of the feeding bag opening.

9. The fluid feeding bottle cap structure according to claim 8, characterized in that: A limiting rib (10) is coaxially provided in the mounting hole (2). The limiting rib (10) is provided between the inner ring of the mounting hole (2) and the outer ring of the sealing ring seat (9). The limiting rib (10) is used to abut against the end of the feeding box opening or the end of the feeding bag opening.

Images