Gas-blocking sterile drip bottle capable of externally treating residual liquid

Abstract

A gas-blocking sterile drip bottle capable of externally treating residual liquid, comprising: a drip head (1), a bottle body (2), and a bottle cap (3). The drip head (1) comprises a drip nozzle (11), a valve body (12), a diaphragm valve (13), and a sterilization filter element (14). The valve body (12) is provided with a backflow groove (1231), an air return hole (1233), an air collection groove (124), a liquid inlet hole (125), and several isolation grooves (121). A hollow spring column (1242) is arranged in the air collection groove (124). The sterilization filter element (14) is arranged on the valve body (12) in a sealed manner. The diaphragm valve (13) is arranged on and blocks the air collection groove (124). A return spring (4) is arranged between the diaphragm valve (13) and the hollow spring column (1242). A conical valve core (134) is arranged on the diaphragm valve (13). The drip nozzle (11) is clamped on the valve body (12) in a sealed manner. The drip nozzle (11) abuts against the diaphragm valve (13). A drip column (113) is arranged on the drip nozzle (11). A conical drip hole (114) is arranged in the drip column (113). A dispenser (15) is sleeved on the drip nozzle (11). The dispenser (15) is attached to the drip nozzle (11) in a sealed manner. Several drainage grooves (153) are uniformly distributed on the circumference of the dispenser (15). The dispenser (15) is attached to the valve body (12) in a sealed manner.

Description

Airproof sterile droplet bottle capable of externally treating residual liquid TECHNICAL FIELD

[0001] The present application relates to the field of medical packaging, in particular to an airproof sterile droplet bottle capable of externally treating residual liquid. BACKGROUND

[0002] In daily life, precise drug delivery is required using a droplet bottle, and the most common one is an eye drop droplet bottle. The current droplet bottles on the market have the problems of backflow of air and residual liquid into the bottle after the completion of droplet, and residual liquid on the droplet head. In view of these problems, various structures of droplet bottles or droplet heads have appeared on the market, but the droplet bottles or droplet heads on the market more or less have some defects, such as: when air and residual liquid backflow, the residual liquid will be blocked on the hydrophobic bacteria removal filter membrane, thereby affecting the reset of the bottle body; or, the residual liquid remains in the droplet hole, and when the droplet is performed, the liquid in the bottle body will be mixed with the residual liquid and be contaminated, affecting the drug effect; or, the residual liquid will remain on the diaphragm valve and contact the reset spring, thereby corroding the reset spring, and the corrosion liquid separated out after the corrosion of the reset spring will contact the liquid in the bottle body, causing more serious harm.

[0003] In order to prevent the above-mentioned situation, a sterile droplet head capable of pre-treating backflow air and residual liquid is disclosed on the market with a publication number: CN118001152B, a separator is sealed in the droplet nozzle, a first avoiding hole is formed on the top wall of the separator, an active gap is left between the first avoiding hole and the droplet column, an air passing gap is left between the separator and the distribution droplet nozzle, the top outer wall of the separator is sealed and fitted on the top inner wall of the distribution droplet nozzle, a plurality of drainage grooves are formed on the top outer wall of the separator, which communicate the first avoiding hole and the air passing gap, and a reset spring is arranged between the separator and the diaphragm valve. When air and residual liquid backflow together, they enter the air passing gap and the annular airflow channel through the drainage grooves on the separator, the residual liquid and the air are separated, the residual liquid is left in the isolation groove, and the air is backflowed to the bottle body through the bacteria removal filter element, thereby preventing the residual liquid from blocking the bacteria removal filter element and corroding the reset spring. After a period of use, it is found that this structure also has certain defects: since the residual liquid is mostly left in the droplet hole, and the external air needs to pass through the droplet hole with small aperture before backflowing to the bottle body, which leads to that when the liquid content in the bottle body is relatively high and the amount of air required for backflow is small, the kinetic energy generated by the amount of air entering the droplet hole is not enough to drive the residual liquid in the droplet hole to backflow, and backflow blockage is prone to occur; when the liquid content in the bottle body is relatively low and a large amount of air is required for backflow, a long time is also required to complete the backflow supplement; and when the droplet head is not covered with a cover, the external air directly contacts the droplet hole and contaminates the droplet hole. SUMMARY

[0004] The present application aims to provide a sterile drop bottle capable of reducing the risk of drop hole being polluted by external air and ensuring the speed of air backflow replenishing into the bottle when separating air and residual liquid.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: a sterile drop bottle capable of externally treating residual liquid, comprising a drop head, a bottle body and a bottle cap, the drop head is sealingly arranged on the bottle body, and the bottle cap is capped on the drop head, the drop head comprises a drop nozzle, a valve body, a diaphragm valve and a hydrophobic sterilization filter element, a plurality of connected isolation grooves are circumferentially distributed on the outer side wall of the valve body, a backflow groove connected with any isolation groove is further arranged on the outer side wall of the valve body, a gas collection groove is arranged in the valve body, a backflow hole connecting the gas collection groove and any isolation groove is arranged on the valve body, a hollow spring column is arranged on the bottom inner wall of the gas collection groove, the sterilization filter element connected with the hollow spring column is sealingly arranged on the bottom wall of the valve body, a liquid inlet hole is arranged in the valve body, the diaphragm valve is made of rubber material with good elasticity, the diaphragm valve is blocked on the gas collection groove, a spring groove is arranged at the bottom of the diaphragm valve, a return spring is arranged between the spring groove and the hollow spring column, a conical valve core is upwardly arranged at the top of the diaphragm valve, the drop nozzle is sealingly clamped on the valve body, the outer diameter of the drop nozzle is smaller than the outer diameter of the valve body, a plurality of pressing blocks are circumferentially distributed on the drop nozzle and press against the diaphragm valve, a liquid inlet gap connected with the liquid inlet hole is formed between the drop nozzle, the diaphragm valve and the valve body, a drop column is arranged on the drop nozzle, a conical drop hole matched with the conical valve core is arranged in the drop column, a distributor is sleeved on the drop nozzle, the inner top wall of the distributor is sealingly attached to the drop nozzle, a backflow column is arranged on the distributor, a drainage hole is arranged on the backflow column and sealingly attached to the drop column, a plurality of drainage grooves are circumferentially distributed between the drainage hole and the inner top wall of the distributor, the inner side wall of the distributor is sealingly attached to the outer side wall of the valve body, an annular gap connecting the drainage groove and the backflow groove is formed between the distributor and the drop nozzle, and the distributor is sealingly connected with the valve body and the bottle body.

[0006] Further, the aforementioned sterile drop bottle capable of externally treating residual liquid, wherein the top wall of the drop column and the conical valve core is an upwardly convex arc-shaped top wall, the top wall of the conical valve core is not lower than the top wall of the drop column, and the top wall of the backflow column is a downwardly concave arc-shaped top wall.

[0007] Further, the aforementioned air-tight sterile liquid drop bottle capable of externally treating residual liquid, wherein an arc-shaped protrusion is arranged downwardly on the inner top wall of the bottle cap, a recessed portion is arranged upwardly on the bottom wall of the arc-shaped protrusion, when the bottle cap is capped on the liquid drop head, the recessed portion of the arc-shaped protrusion covers the arc-shaped top wall of the liquid drop column and the conical valve core, and a plurality of hollow holes are uniformly distributed on the top wall of the bottle cap.

[0008] Further, the aforementioned air-tight sterile liquid drop bottle capable of externally treating residual liquid, wherein a mounting step is arranged upwardly on the bottom wall of the valve body, the mounting step extends into the gas collection groove, the hollow spring column is arranged on the mounting step and coaxial with the spring groove, the top portion of the hollow spring column is higher than the air return hole, a mounting hole is arranged in the mounting step and communicates with the hollow spring column, and the sterilization filter core is sealingly fixed in the mounting hole.

[0009] Further, the aforementioned air-tight sterile liquid drop bottle capable of externally treating residual liquid, wherein the specific connection structure between the diaphragm valve and the valve body is that a sealing sleeve is arranged downwardly on the diaphragm valve, a first sealing ring is arranged outwardly on the side wall of the sealing sleeve, an annular step is left between the side wall of the diaphragm valve and the sealing sleeve, an annular groove is arranged on the inner side wall of the gas collection groove, the sealing sleeve of the diaphragm valve extends into the gas collection groove, the sealing sleeve is above the air return hole, the first sealing ring on the sealing sleeve is sealingly fitted with the inner side wall of the gas collection groove, and the annular step on the diaphragm valve is clamped into the annular groove.

[0010] Further, the aforementioned air-tight sterile liquid drop bottle capable of externally treating residual liquid, wherein the specific connection structure between the diaphragm valve and the valve body is that a sealing sleeve is arranged downwardly on the diaphragm valve, a first sealing ring is arranged outwardly on the side wall of the sealing sleeve, an annular step is left between the side wall of the diaphragm valve and the sealing sleeve, an annular groove is arranged on the inner side wall of the gas collection groove, the sealing sleeve of the diaphragm valve extends into the gas collection groove, the sealing sleeve is above the air return hole, the first sealing ring on the sealing sleeve is sealingly fitted with the inner side wall of the gas collection groove, and the annular step on the diaphragm valve is clamped into the annular groove.

[0011] Further, the aforementioned air-tight sterile drop bottle capable of externally treating residual liquid, wherein twelve isolation grooves are arranged on the outer wall of the valve body in three rows and four columns, horizontal partition plates are arranged between the two adjacent isolation grooves in the upper and lower rows, vertical partition plates are arranged between the two adjacent isolation grooves in the left and right columns, a reflux groove is arranged on any vertical partition plate and directly communicates with the two isolation grooves in the upper row adjacent to the vertical partition plate, a gas return hole is arranged on the vertical partition plate opposite to the reflux groove, a transition groove is arranged on the vertical partition plate and directly communicates with the two isolation grooves in the lower row adjacent to the vertical partition plate, the transition groove communicates with the gas return hole, three first air passage grooves are arranged on the other two vertical partition plates from top to bottom, the three first air passage grooves directly communicate with the two isolation grooves adjacent to the first air passage grooves in the left and right columns, respectively, a second air passage groove is arranged on the horizontal partition plate between the isolation groove in the upper row not directly communicating with the reflux groove and the isolation groove in the middle row in the same column, the second air passage groove communicates with the isolation grooves in the upper row and the middle row in the same column, a third air passage groove is arranged on the horizontal partition plate below the horizontal partition plate not provided with the second air passage groove and in the same column, and the third air passage groove communicates with the isolation grooves in the middle row and the lower row in the same column.

[0012] Further, the aforementioned air-tight sterile drop bottle capable of externally treating residual liquid, wherein a third sealing ring is arranged in the upper end inner wall of the conical drop hole, and the conical valve core is sealingly fitted with the third sealing ring after extending into the conical drop hole.

[0013] Further, the aforementioned air-tight sterile drop bottle capable of externally treating residual liquid, wherein the connection structure between the distributor, the valve body and the bottle body is that a positioning ring sleeve is arranged on the bottom wall of the valve body and extends downward, a first S-shaped ring groove is arranged on the outer wall of the positioning ring sleeve, a second S-shaped ring groove is arranged on the inner wall of the distributor, an annular folded plate extends outwardly on the outer wall of the distributor, a convex ring is arranged on the inner wall of the annular folded plate, a conical clamping ring extends on the bottle mouth of the bottle body, a convex shoulder is left between the conical clamping ring and the outer wall of the bottle mouth, the first S-shaped ring groove on the positioning ring sleeve and the second S-shaped ring groove on the distributor are mutually engaged and clamped, the distributor and the valve body are sealingly assembled together, the positioning ring sleeve is clamped into the bottle mouth, the distributor is clamped into the inner wall of the conical clamping ring, and the convex ring on the annular folded plate is clamped with the convex shoulder in a staggered manner.

[0014] The advantages of the present application are that: after the drop is completed, the conical valve core on the diaphragm valve can block the conical drop hole in the drop nozzle under the action of the return spring, so that the external air and the residual liquid are blocked outside, and the external air cannot enter the conical drop hole to cause pollution to the conical drop hole; and when the residual liquid is backflowed, the drainage groove is directly connected with the external air, so that the problem of backflow blockage or long bottle body reset time due to the limitation of the drop hole diameter in CN118001152B is avoided, so that the bottle body has good reset performance; the top wall of the drop column and the conical valve core is set to an upwardly convex arc shape, and the top wall of the conical valve core is not lower than the top wall of the drop column, and the top wall of the backflow column is set to a downwardly concave arc shape, so that when the residual liquid is left on the top wall of the drop column and the conical valve core, it will automatically flow into the drainage groove under the action of gravity. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 is a structural schematic diagram of a gas-blocking sterile drop bottle capable of externally treating residual liquid according to the present application.

[0016] Fig. 2 is a structural schematic diagram of a drop head in Fig. 1.

[0017] Fig. 3 is a structural schematic diagram of a valve body in Fig. 2.

[0018] Fig. 4 is a structural schematic diagram of another perspective view of the valve body in Fig. 2.

[0019] Fig. 5 is a structural schematic diagram of a sectional view of the valve body in Fig. 2.

[0020] Fig. 6 is a structural schematic diagram of a drop nozzle in Fig. 2.

[0021] Fig. 7 is a structural schematic diagram of a diaphragm valve in Fig. 2.

[0022] Fig. 8 is a structural schematic diagram of a dispenser in Fig. 2.

[0023] Fig. 9 is a structural schematic diagram of a bottle body in Fig. 1.

[0024] Fig. 10 is a structural schematic diagram of a bottle cap in Fig. 1. DETAILED DESCRIPTION

[0025] The technical solutions of the present application will be further described below in combination with the drawings and preferred embodiments.

[0026] As shown in Figs. 1-10, the sterile drop bottle capable of externally treating residual liquid according to the present application comprises a drop head 1, a bottle body 2 and a bottle cap 3, the drop head 1 is sealingly arranged on the bottle body 2, and the bottle cap 3 is covered on the drop head 1.

[0027] The drop head 1 comprises a drop nozzle 11, a valve body 12, a diaphragm valve 13 and a hydrophobic bacteria removal filter 14, twelve isolation grooves 121 are arranged on the outer wall of the valve body 12 in three rows and four columns, horizontal partition plates 122 are arranged between the upper and lower two rows of isolation grooves 121, vertical partition plates 123 are arranged between the left and right two columns of isolation grooves 121, a backflow groove 1231 is arranged on any one vertical partition plate 123, the backflow groove 1231 is directly communicated with the two upper isolation grooves 121 adjacent to the vertical partition plate 123, a transition groove 1232 is arranged on the vertical partition plate 123 opposite to the backflow groove 1231, the transition groove 1232 is directly communicated with the two lower isolation grooves 121 adjacent to the vertical partition plate 123, a gas return hole 1233 is arranged in the transition groove 1232, three first air grooves 1234 are arranged on the other two vertical partition plates 123 from top to bottom, the three first air grooves 1234 are directly communicated with the two isolation grooves 121 adjacent to each other, respectively, a second air groove 1221 is arranged on the horizontal partition plate 122 between the isolation groove 121 in the upper row not directly communicated with the backflow groove 1231 and the isolation groove 121 in the middle row in the same column, the second air groove 1221 is communicated with the isolation grooves 121 in the upper row and the middle row in the same column, a third air groove 1222 is arranged on the horizontal partition plate 122 in the same column as the horizontal partition plate 122 above which is not provided with the second air groove 1221, the third air groove 1222 is communicated with the isolation grooves 121 in the middle row and the lower row in the same column. After the gas enters the two isolation grooves 121 in the upper row adjacent to the backflow groove 1231 through the backflow groove 1231, the gas enters the two isolation grooves 121 in the upper row far away from the backflow groove 1231 and not directly communicated with the backflow groove 1231 through the first air grooves 1234 in the upper row, then the gas enters the isolation grooves 121 in the middle row in the same column as the two isolation grooves 121 through the second air grooves 1221 on the horizontal partition plates 122 below the two isolation grooves 121, then the gas enters the two isolation grooves 121 in the middle row close to the backflow groove 1231 and far away from the gas return hole 1233 through the first air grooves 1234 in the middle row communicated with the two isolation grooves 121, then the gas enters the isolation grooves 121 in the lower row in the same column as the two isolation grooves 121 through the third air grooves 1222 on the horizontal partition plates 122 below the two isolation grooves 121, then the gas enters the two isolation grooves 121 in the lower row close to the gas return hole 1233 and directly communicated with the transition groove 1232 through the first air grooves 1234 in the lower row communicated with the two isolation grooves 121, and finally the gas enters the gas return hole 1233 through the transition groove 1232.

[0028] A gas collecting groove 124 is formed in the valve body 12, the gas collecting groove 124 is communicated with the air return hole 1233, the air entering the air return hole 1233 can enter the gas collecting groove 124, an installation step 1241 is concavely arranged upwardly on the bottom wall of the valve body 12, the installation step 1241 extends upwardly into the gas collecting groove 124, an installation hole 12411 is formed in the installation step 1241, the sterilization filter element 14 is sealingly fixed in the installation hole 12411, a hollow spring column 1242 communicated with the installation hole 12411 is vertically arranged on the installation step 1241, the air in the gas collecting groove 124 can pass through the sterilization filter element 14 through the hollow spring column 1242, the top of the hollow spring column 1242 is higher than the air return hole 1233, a liquid inlet hole 125 is formed in the valve body 12 and penetrates the top wall and the bottom wall of the valve body 12.

[0029] A diaphragm valve 13 made of rubber material with good elasticity is arranged on the valve body 12, a sealing sleeve 131 is downwardly arranged on the diaphragm valve 13, a first sealing ring 1311 is protrusively arranged on the outer side wall of the sealing sleeve 131, an annular step 132 is left between the side wall of the diaphragm valve 13 and the sealing sleeve 131, an annular groove 1243 is formed in the inner side wall of the gas collecting groove 124, the sealing sleeve 131 on the diaphragm valve 13 extends into the gas collecting groove 124, the sealing sleeve 131 is above the air return hole 1233, the first sealing ring 1311 on the sealing sleeve 131 is sealingly and tightly fitted with the inner side wall of the gas collecting groove 124, the annular step 132 on the diaphragm valve 13 is clamped into the annular groove 1243, the diaphragm valve 13 blocks the gas collecting groove 124, a spring groove 133 coaxial with the hollow spring column 1242 is arranged at the center bottom of the diaphragm valve 13, a return spring 4 is arranged between the spring groove 133 and the hollow spring column 1242, a conical valve core 134 coaxial with the spring groove 133 is upwardly and extendingly arranged on the top of the diaphragm valve 13.

[0030] The valve body 12 is sealed and clamped with the drop nozzle 11. An annular clamping groove 126 is arranged on the top wall of the valve body 12. A positioning groove 1261 is arranged on one side wall of the annular clamping groove 126. A connecting clamping ring 111 is arranged downwardly on the drop nozzle 11. A side clamping ring 1111 is protrusively arranged on one side wall of the connecting clamping ring 111. A second sealing ring 1112 is protrusively arranged on the other side wall of the connecting clamping ring 111. The connecting clamping ring 111 on the drop nozzle 11 extends into the annular clamping groove 126. The side clamping ring 1111 on the connecting clamping ring 111 is clamped into the positioning groove 1261 of the annular clamping groove 126. The second sealing ring 1112 on the connecting clamping ring 111 is sealingly and closely fitted with the other side wall of the annular clamping groove 126. A plurality of pressing blocks 112 are circumferentially and evenly arranged on the drop nozzle 11 and press against the diaphragm valve 13. The liquid inlet gap 5 is formed between the drop nozzle 11, the diaphragm valve 13 and the valve body 12 and is connected with the liquid inlet hole 125. The outer diameter of the drop nozzle 11 is smaller than the outer diameter of the valve body 12. A drop column 113 is arranged on the drop nozzle 11. A tapered drop hole 114 is arranged in the drop column 113 and is adapted to the tapered valve core 134. A third sealing ring 1141 is protrusively arranged on the inner wall of the upper end of the tapered drop hole 114. The diaphragm valve 13 is extended into the tapered drop hole 114 under the elastic force of the return spring 4. The tapered valve core 134 is sealingly and closely fitted with the third sealing ring 1141.

[0031] The distributor 15 is sleeved on the drop nozzle 11. The inner top wall of the distributor 15 is sealingly and closely fitted on the drop nozzle 11. A liquid return column 151 is arranged on the distributor 15. A drainage hole 152 is arranged in the liquid return column 151. The drainage hole 152 is sealingly and closely fitted with the drop column 113. A plurality of drainage grooves 153 are circumferentially and evenly arranged between the drainage hole 152 and the inner top wall of the distributor 15. The inner side wall of the distributor 15 is sealingly and closely fitted on the outer side wall of the valve body 12. The annular gap 6 is formed between the inner side wall of the distributor 15 and the outer side wall of the drop nozzle 11 and connects the drainage grooves 153 and the backflow groove 1231. The top wall of the drop column 113 and the top wall of the tapered valve core 134 are both arc-shaped top walls protruding upwardly. The top wall of the tapered valve core 134 is not lower than the top wall of the drop column 113. The top wall of the liquid return column 151 is an arc-shaped top wall recessing downwardly.

[0032] The distributor 15 is connected with the valve body 12 and the bottle body 2 in a sealed manner. A positioning ring 127 is arranged on the bottom wall of the valve body 12 and extends downward. A first S-shaped ring groove 1271 is arranged on the outer side wall of the positioning ring 127. A second S-shaped ring groove 154 is arranged on the inner side wall of the distributor 15. An annular folded plate 155 is arranged on the outer side wall of the distributor 15 and extends outward. A convex ring 1551 is arranged on the inner side wall of the annular folded plate 155. A tapered clamping ring 21 is arranged on the bottle mouth of the bottle body 2 and extends outward. A convex shoulder 22 is arranged between the tapered clamping ring 21 and the outer side wall of the bottle mouth. The first S-shaped ring groove 1271 of the positioning ring 127 and the second S-shaped ring groove 154 of the distributor 15 are engaged with each other. The distributor 15 is assembled with the valve body 12 in a sealed manner. When the positioning ring 127 is clamped into the bottle mouth, the distributor 15 is clamped into the inner side wall of the tapered clamping ring 21. The convex ring 1551 of the annular folded plate 155 is clamped into the convex shoulder 22 in a dislocation manner. Therefore, the bottle mouth of the bottle body 2 is assembled with the valve body 12 and the distributor 15 in a sealed manner.

[0033] An arc-shaped convex 31 is arranged on the inner top wall of the bottle cap 3 and extends downward. A concave part is arranged on the bottom wall of the arc-shaped convex 31 and extends upward. When the bottle cap 3 is assembled on the drop head 1, the arc-shaped convex 31 is arranged on the arc-shaped top wall of the tapered valve core 134 and the drop column 113. Therefore, the top wall of the tapered valve core 134 and the drop column 113 is protected from being polluted by external air. A plurality of hollow holes 32 are arranged on the top wall of the bottle cap 3 in a circumferential direction. When the bottle cap 3 is assembled on the drop head 1, the isolation groove 121 can be connected with the external air. Therefore, the volatilization of the residual liquid in the isolation groove 121 is facilitated.

[0034] When the liquid drop is performed, the bottle cap 3 is removed and the drop bottle is inverted. Since the sterilization filter membrane 14 is hydrophobic, the liquid in the bottle body 2 cannot pass through the sterilization filter membrane 14 and enter the gas collection groove 124. The liquid in the bottle body 2 enters the liquid inlet gap 5 through the liquid inlet hole 125. When the bottle body 2 is pressed, the liquid in the bottle body 2 is pressed and enters the liquid inlet gap 5 through the liquid inlet hole 125 to push the diaphragm valve 13. Since the diaphragm valve 13 is made of a plastic material with elasticity, when the diaphragm valve 13 is pushed by the liquid in the liquid inlet gap 5, the middle part of the diaphragm valve 13 which is not fixed moves away from the drop nozzle 11 by overcoming the elastic force of the return spring 4. At this time, the tapered valve core 134 of the diaphragm valve 13 is separated from the tapered drop hole 114 of the drop column 113 to form a liquid outlet channel. The liquid passes through the liquid outlet channel to form a drop of liquid on the top wall of the drop column 113 and the tapered valve core 134, and then drops downward.

[0035] When the bottle 2 is loosened, the liquid medicine in the liquid inlet gap 5 no longer pushes the diaphragm valve 13, and the diaphragm valve 13 is reset under the elastic force of the reset spring 4 and reseals and fits the conical liquid drop hole 114, the liquid inlet gap 5 is isolated from the external air, and the residual liquid remaining in the conical liquid drop hole 114 is discharged from the liquid column 113 and the top wall of the conical valve core 134. At the same time, when the bottle 2 is reset, negative pressure is generated, and under the action of the negative pressure, external air is sucked into the drainage groove 153. When the liquid drop bottle is still in an inverted state, since the drainage grooves 153 are uniformly distributed around the circumference, when the external air is sucked into each drainage groove 153, a strong vortex is formed, thereby wrapping and entraining the residual liquid remaining on the top wall of the liquid column 113 and the conical valve core 134 into the drainage groove 153. When the liquid drop bottle is in a vertical state, since the top wall of the liquid column 113 and the conical valve core 134 is an upwardly convex arc-shaped top wall, the residual liquid will automatically flow into the drainage groove 153 under the action of gravity. When there is negative pressure, it directly acts on the residual liquid. After the air and the residual liquid are sucked into the drainage groove 153, they enter the annular gap 6. Since the flow-through space of the drainage groove 153 is small, after the air enters the drainage groove 153, it is compressed to increase the air pressure and accelerate the flow rate. When the air and the residual liquid enter the annular gap 6, since the space of the annular gap 6 is large, the air pressure decreases, and the flow rate also decreases. A large amount of residual liquid will separate from the air under the action of gravity. After the air and the separated residual liquid are separated, they flow separately. The air enters the gas collection groove 124 after passing through the backflow groove 1231, the isolation groove 121, the first air passage 1234, the third air passage 1222, the second air passage 1221, the transition groove 1232, and the back gas hole 1233. Since there are twelve isolation grooves 121, the air will change direction more times when flowing back to enhance the collision and adhesion of the residual liquid in the air with the groove wall of the isolation groove 121, thereby further improving the separation efficiency of the air and the residual liquid. In this way, when the air enters the back gas hole 1233, the air does not contain residual liquid. When the air enters the gas collection groove 124 from the back gas hole 1233, since the space of the gas collection groove 124 is large, the flow rate of the air entering the gas collection groove 124 from the back gas hole 1233 is further reduced. Moreover, the top of the hollow spring column 1242 protrudes upward above the back gas hole 1233, so the air coming out of the back gas hole 1233 cannot directly enter the hollow spring column 1242 and contact the sterilization filter element 14. It can only be filled in the gas collection groove 124 to force the air above the top of the hollow spring column 1242 to enter the hollow spring column 1242. Finally, after passing through the sterilization filter element 14, the air enters the bottle 2. In this way, the air backflow speed can be prevented from being too fast to damage the sterilization filter element 14.The residual liquid medicine is isolated in the isolation groove 121, and the residual liquid medicine gradually flows to the lower isolation groove 121 under the self weight, and because the number of the isolation grooves 121 is large, the residual liquid medicine is not easy to flow out of the isolation groove 121, so as to not affect the subsequent liquid drops.

[0036] It should be noted that the above examples are only used to illustrate the technical solutions of the present application, but not to limit it. Although the present application has been described in detail with reference to the above examples, those skilled in the art should understand that the specific embodiments of the present application can be modified or replaced equivalently without departing from the spirit and scope of the present application, and any modification or equivalent replacement should be covered in the protection scope of the claims of the present application.

Claims

1. A gas barrier type sterile droplet bottle capable of performing external treatment on residual liquid, comprising: The drip head, bottle body and bottle cap, the drip head is sealed on the bottle body, and the bottle cap is covered on the drip head, characterized in that: the drip head comprises a drip nozzle, a valve body, a diaphragm valve and a hydrophobic sterilization filter element, a plurality of connected isolation grooves are circumferentially distributed on the outer wall of the valve body, a backflow groove connected with any isolation groove is arranged on the outer wall of the valve body, a gas collection groove is arranged in the valve body, a back gas hole connected with the gas collection groove and any isolation groove is arranged on the valve body, a hollow spring column is arranged on the bottom inner wall of the gas collection groove, a sterilization filter element connected with the hollow spring column is sealed on the bottom wall of the valve body, a liquid inlet hole is arranged in the valve body, and the diaphragm valve is made of rubber material with good elasticity, the diaphragm valve is blocked on the gas collection groove, a spring groove is arranged at the bottom of the diaphragm valve, a reset spring is arranged between the spring groove and the hollow spring column, a conical valve core is arranged on the top of the diaphragm valve, the drip nozzle is sealed and clamped on the valve body, the outer diameter of the drip nozzle is smaller than the outer diameter of the valve body, a plurality of pressing blocks are circumferentially distributed on the drip nozzle and press on the diaphragm valve, a liquid inlet gap connected with the liquid inlet hole is formed between the drip nozzle, the diaphragm valve and the valve body, a drip column is arranged on the drip nozzle, a conical drip hole matched with the conical valve core is arranged in the drip column, a distributor is sleeved on the drip nozzle, the inner top wall of the distributor is sealed and fitted on the drip nozzle, a back liquid column is arranged on the distributor, a drainage hole is arranged on the back liquid column and sealed and fitted with the drip column, a plurality of drainage grooves are circumferentially distributed between the drainage hole and the inner top wall of the distributor, the inner side wall of the distributor is sealed and fitted on the outer side wall of the valve body, an annular gap connected with the drainage groove and the backflow groove is formed between the distributor and the drip nozzle, and the distributor is sealed and connected with the valve body and the bottle body.

2. The sterile drip bottle of claim 1, wherein: The top wall of the drip column and the conical valve core is an upward convex arc-shaped top wall, the top wall of the conical valve core is not lower than the top wall of the drip column, and the top wall of the back liquid column is a downward concave arc-shaped top wall.

3. The bottle according to claim 2, wherein: An arc-shaped protrusion is downward protruded on the inner top wall of the bottle cap, a concave part is arranged on the bottom wall of the arc-shaped protrusion, when the bottle cap is covered on the drip head, the concave part of the arc-shaped protrusion covers the arc-shaped top wall of the conical valve core and the drip column, and a plurality of hollow holes are circumferentially distributed on the top wall of the bottle cap.

4. The bottle according to claim 1, wherein: A mounting step is upward concave arranged on the bottom wall of the valve body, the mounting step extends into the gas collection groove, the hollow spring column is arranged on the mounting step and coaxial with the spring groove, the top of the hollow spring column is upward higher than the back gas hole, a mounting hole connected with the hollow spring column is arranged in the mounting step, and the sterilization filter element is sealed and fixed in the mounting hole.

5. The bottle according to claim 1, wherein: The specific connection structure between the diaphragm valve and the valve body is that a sealing sleeve is downward arranged on the diaphragm valve, a first sealing ring is protruded on the outer side wall of the sealing sleeve, an annular step is left between the side wall of the diaphragm valve and the sealing sleeve, an annular groove is arranged on the inner side wall of the gas collection groove, the sealing sleeve of the diaphragm valve extends into the gas collection groove, the sealing sleeve is above the back gas hole, the first sealing ring on the sealing sleeve is sealed and fitted with the inner side wall of the gas collection groove, and the annular step on the diaphragm valve is clamped into the annular groove.

6. The bottle according to claim 1, wherein: The specific connection structure between the drop nozzle and the valve body is that an annular clamping groove is arranged on the top wall of the valve body, a positioning groove is arranged on the side wall of the annular clamping groove, a connecting clamping ring is arranged downward on the drop nozzle, a side clamping ring is protrusively arranged on the side wall of the connecting clamping ring, and a second sealing ring is protrusively arranged on the other side wall of the connecting clamping ring, the connecting clamping ring on the drop nozzle extends into the annular clamping groove, the side clamping ring on the connecting clamping ring is clamped into the positioning groove of the annular clamping groove, and the second sealing ring on the connecting clamping ring is sealingly attached to the other side wall of the annular clamping groove.

7. The bottle according to claim 1, wherein: The outer side wall of the valve body is provided with three rows of four columns of a total of twelve isolation grooves at intervals, a horizontal partition plate is arranged between the two adjacent rows of upper and lower isolation grooves, a vertical partition plate is arranged between the two adjacent columns of left and right isolation grooves, the backflow groove is arranged on any one vertical partition plate and directly communicates with the two isolation grooves in the upper row adjacent to the vertical partition plate, the backflow hole is arranged on the vertical partition plate opposite to the backflow groove, a transition groove is arranged on the vertical partition plate and directly communicates with the two isolation grooves in the lower row adjacent to the vertical partition plate, the transition groove communicates with the backflow hole, three first air grooves are arranged on the other two vertical partition plates at intervals from top to bottom, the three first air grooves directly communicate with the two isolation grooves adjacent to each other on the left and right respectively, the second air groove is arranged on the horizontal partition plate between the isolation groove in the upper row not directly communicating with the backflow groove and the isolation groove in the middle row and in the same column, the second air groove communicates with the isolation grooves in the same column and not in the upper row and the middle row, and the third air groove is arranged on the horizontal partition plate below the horizontal partition plate not provided with the second air groove and in the same column, the third air groove communicates with the isolation grooves in the same column and in the middle row and the lower row.

8. The bottle according to claim 1, wherein: A third sealing ring is protrusively arranged in the inner wall of the upper end of the conical drop hole, and the conical valve core sealingly attaches to the third sealing ring after extending into the conical drop hole.

9. The bottle according to claim 1, wherein: The connection structure between the dispenser and the valve body and the bottle body is that a positioning ring sleeve is arranged downward on the bottom wall of the valve body, a first S-shaped ring groove is arranged on the outer side wall of the positioning ring sleeve, a second S-shaped ring groove is arranged on the inner side wall of the dispenser, an annular folded plate is arranged outward on the outer side wall of the dispenser, a convex ring is arranged on the inner side wall of the annular folded plate, a conical clamping ring is arranged upward on the bottle mouth of the bottle body, a shoulder is left between the conical clamping ring and the outer side wall of the bottle mouth, the first S-shaped ring groove on the positioning ring sleeve and the second S-shaped ring groove on the dispenser are engaged with each other, the dispenser and the valve body are sealingly assembled together, the positioning ring sleeve is clamped into the bottle mouth, the dispenser is clamped into the inner side wall of the conical clamping ring, and the convex ring on the annular folded plate is dislocatedly clamped with the shoulder.

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