Drying equipment for oral liquid glass bottle production

Abstract

The invention discloses drying equipment for oral liquid glass bottle production, and relates to the technical field of glass bottle drying equipment, the drying equipment comprises a drying box and a conveying belt, a drying module and a detection module are sequentially arranged in the drying box, the drying module is used for blowing and drying a glass bottle, and the detection module is used for detecting the drying state of the inner wall of the glass bottle; the conveying belt runs in the drying box, and a plurality of placing tables are arranged on the conveying belt at intervals and used for placing glass bottles in an inverted buckling mode; the drying module comprises an air blowing assembly, the air blowing assembly is used for blowing the glass bottle and suspending the glass bottle, the detection module performs drying detection on the suspended glass bottle by using a surface resistivity test method, and the first detection part is used for performing drying detection on the inner wall position of the bottom of the glass bottle; the second detection part is used for performing drying detection on the inner wall of the bottle opening of the glass bottle. The glass bottle drying device has the effect of improving the glass bottle drying efficiency.

Description

Technical Field

[0001] This application relates to the technical field of glass bottle drying equipment, and in particular to a drying equipment for the production of oral liquid glass bottles. Background Art

[0002] Most common oral liquids on the market are basically packaged in glass bottles. This is because glass has good chemical stability and does not react with most drug ingredients, which ensures the quality and effectiveness of drugs during storage. Glass containers can effectively block air, moisture and other external factors that may affect the stability of drugs, thereby extending the shelf life of drugs; glass containers also perform well during high-temperature and high-pressure sterilization processes. For drugs that need to be stored away from light, brown or other colored glass bottles can also provide additional protection.

[0003] Before filling oral liquid, the glass bottles need to be cleaned to ensure that both the inner and outer surfaces of the glass bottles are clean, especially the inner surface of the glass bottles. After cleaning, the glass bottles also need to be dried to completely remove the water on the inner wall of the glass bottles to avoid contaminating the oral liquid. Then the glass bottles start to fill the oral liquid.

[0004] Conventional oral liquid glass bottles are usually placed in the same tray during drying, and the glass bottles are crowded together, which is not conducive to thorough drying. At the same time, the glass bottles are completely dried by high temperature, resulting in low drying efficiency and high drying energy consumption. Summary of the Invention

[0005] In order to improve the situation of low drying efficiency and high drying energy consumption of conventional oral liquid glass bottles, this application provides a drying equipment for the production of oral liquid glass bottles.

[0006] This application provides a drying equipment for the production of oral liquid glass bottles, adopting the following technical solutions: A drying equipment for the production of oral liquid glass bottles, comprising A drying box, which is internally provided with a drying module and a detection module in sequence. The drying module is used to blow-dry the glass bottles, and the detection module is used to detect the drying state of the inner wall of the glass bottles; A conveyor belt, running inside the drying box, and a plurality of placement platforms are arranged at intervals on the conveyor belt for the glass bottles to be placed upside down; The drying module includes a blowing component, which is used to blow up and suspend the glass bottles. The detection module uses the surface resistivity test method to detect the drying of the glass bottles in a suspended state. The detection module includes a first detection part and a second detection part. When the glass bottle is placed on the placement platform, the first detection part is used to detect the drying of the inner wall position of the bottom of the glass bottle, and the second detection part is used to detect the drying of the inner wall of the bottle mouth of the glass bottle.

[0007] Optionally, the air blowing assembly includes a hollow air blowing rod. The air blowing rods correspond to the placement platforms one by one, and the tops thereof vertically penetrate through the top surfaces of the placement platforms. The air blowing rods are used to be inserted into the inside of the glass bottles from bottom to top. A buffer pad is provided at the top end of the air blowing rod, and a jacking through hole is formed through the center of the buffer pad. The other end of the air blowing rod is used to be externally connected to a gas supply device. The air blowing rod is used to blow air against the inner bottom wall of the glass bottle so that the glass bottle is blown up and suspended.

[0008] Optionally, the first detection part is correspondingly arranged at the top end of the air blowing rod, and the second detection part is correspondingly arranged on the outer wall of the air blowing rod. When the glass bottle is placed on the placement platform, the second detection part is correspondingly located at the position of the bottle mouth of the glass bottle.

[0009] Optionally, the first detection part and the second detection part are connected into a whole through a connecting piece so that the first detection part and the second detection part can move synchronously.

[0010] Optionally, the first detection part includes a first detection positive electrode and a first detection negative electrode arranged at intervals. The tops of the first detection positive electrode and the first detection negative electrode penetrate into the side wall of the air blowing rod and then penetrate out from the top end of the air blowing rod, and are used to simultaneously contact the inner wall of the bottom of the glass bottle. The first detection positive electrode and the first detection negative electrode are both vertically slidably connected to the side wall of the air blowing rod, and the air blowing rod is made of an insulating material.

[0011] Optionally, the second detection part includes a plurality of limiting blocks arranged at intervals around the outer wall of the air blowing rod. The limiting blocks are vertically slidably connected to the air blowing rod. A pair of second detection positive electrodes and second detection negative electrodes arranged at intervals are correspondingly penetrated in each limiting block. The second detection positive electrode and the second detection negative electrode are used to simultaneously contact the inner wall of the bottle mouth of the glass bottle. A gap is left between the limiting block and the inner wall of the bottle mouth of the glass bottle, and the limiting block is made of an insulating material.

[0012] Optionally, a pressing member is penetrated on the side wall of each limiting block away from the air blowing rod. The pressing member is horizontally slidably connected to the limiting block. The pressing member is made of an insulating and soft material. The pressing members on all the limiting blocks are used to simultaneously press against the inner wall of the bottle mouth of the glass bottle so that all the limiting blocks rise synchronously with the glass bottle.

[0013] Optionally, a driving channel is formed in the limiting block. The pressing member is correspondingly arranged at one end of the driving channel, and the other end of the driving channel is used to be externally connected to a gas supply device. The pressing member is used to press against the inner wall of the bottle mouth of the glass bottle under the drive of the air flow in the driving channel.

[0014] Optionally, a high-temperature area and a low-temperature area are provided in the drying oven. The first detection part and the second detection part are used to perform drying detection on the glass bottle through the surface resistivity test method in the low-temperature area.

[0015] In summary, the present application includes at least one of the following beneficial effects: 1. General, the way of placing the glass bottle to be dried upside down on the placement table enables the residual moisture in the bottle to flow out of the bottle actively downward under the action of its own gravity, which can greatly reduce the time for removing moisture in the bottle. Then, the blowing rod is inserted into the glass bottle from the bottom up through the bottle mouth, and then hot air flow is introduced into the glass bottle through the blowing rod. After the hot air flow sprays upward, it impacts on the inner wall of the bottom of the glass bottle, and then moves downward along the inner side wall of the glass bottle. After sweeping across the inner side wall of the glass bottle, it finally blows out of the glass bottle from the bottle mouth. The hot air flow can sweep across all surfaces on the inner wall of the glass bottle. While actively blowing out the moisture on the inner wall of the glass bottle, it can also use the temperature of the hot air flow to dry the moisture on the inner wall of the glass bottle, effectively improving the drying efficiency of the moisture in the bottle and reducing the energy consumption required during the drying process; 2. By respectively arranging a first detection part and a second detection part on the top and the outer side wall of the blowing rod, where the first detection part correspondingly detects the drying condition at the inner wall of the bottom of the glass bottle, and the second detection part correspondingly detects the drying condition at the inner wall of the bottle mouth of the glass bottle. These two positions are the two places where moisture is most likely to remain on the inner wall of the glass bottle. Through the first detection part and the second detection part, the drying detection of these two positions can be carried out simultaneously, effectively improving the accuracy of the drying detection result of the glass bottle; 3. By using the air flow to drive all the pressing parts to press against the inner wall of the bottle mouth of the glass bottle simultaneously, when the glass bottle is blown up by the air flow and rises, the glass bottle can drive the pressing parts to rise synchronously. And the pressing parts are arranged in the limiting block, so the pressing parts can drive the limiting block and the second detection part to rise synchronously. And the second detection part is connected to the first detection part as a whole through the connecting part, so the first detection part will also rise together with the glass bottle. Since the blowing rod, the limiting block and the pressing parts are all made of insulating materials, when the air flow blows up the glass bottle and makes it suspended, the glass bottle is separated from other conductive objects in the outside world. And at this time, both detection parts can rise synchronously with the glass bottle, always keeping in contact with the inner wall at the corresponding position of the glass bottle, so as to use the surface resistivity test method to detect the drying condition of the inner wall moisture. The accuracy of the result measured when the glass bottle is in the suspended state is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the structural schematic diagram showing the whole drying equipment in the embodiment of the present application; Figure 2 is the structural schematic diagram inside the drying equipment in the embodiment of the present application; Figure 3 is the partial structural schematic diagram showing the positional relationship between the glass bottle and the placement table in the embodiment of the present application; Figure 4 is the partial structural schematic diagram showing the blowing rod in the embodiment of the present application; Figure 5It is a schematic structural diagram showing the inside of the air blowing rod and the first detection part in the embodiment of the present application; Figure 6 is Figure 5 an enlarged schematic diagram at A; Figure 7 It is a sectional schematic diagram showing the structure of the second detection part in the embodiment of the present application.

[0017] Explanation of reference numerals: 1, drying oven; 11, feed inlet; 12, discharge outlet; 13, high-temperature area; 14, low-temperature area; 15, partition board; 2, conveyor belt; 21, placing table; 3, glass bottle; 4, air blowing rod; 41, buffer pad; 42, jacking channel; 5, first detection part; 51, first detection positive electrode; 52, first detection negative electrode; 53, positioning ring; 531, cage; 532, restoring part; 6, second detection part; 61, limiting block; 62, second detection positive electrode; 63, second detection negative electrode; 64, pressing part; 7, connecting part. Detailed implementation manners

[0018] The following further Figure 1-7 describes the present application in detail with reference to the

[0019] The embodiment of the present application discloses a drying device for oral liquid glass bottles. Referring to Figures 1 to 3 , the drying device for oral liquid glass bottles includes a drying oven 1 and a conveyor belt 2. The inside of the drying oven 1 is hollow and can accommodate the conveyor belt 2 and various devices and components for drying the glass bottles 3. Feed inlets 11 and discharge outlets 12 are respectively opened at both ends of the drying oven 1 along its own length direction. The feed inlet 11 of the drying oven 1 is used to receive the cleaning device of the glass bottles 3. After being cleaned, the glass bottles 3 can preferably be placed on the conveyor belt 2 by a manipulator, and then the conveyor belt 2 transports the glass bottles 3 with moisture on the surface into the drying oven 1 for drying. The discharge outlet 12 of the drying oven 1 is used to connect with the filling device of the oral liquid. Similarly, after being dried, the glass bottles 3 can be placed into the production line of the filling device by a manipulator again.

[0020] The conveyor belt 2 is connected end to end to form a loop and horizontally circulates in and out of the drying oven 1. Both ends of the conveyor belt 2 along its running direction extend out of the drying oven 1, facilitating the manipulator to load and unload the glass bottles 3.

[0021] Multiple hollow-walled platforms 21 are spaced apart on the conveyor belt 2. These platforms are used to hold the glass bottles 3 to be dried. These platforms 21 are detachably connected to the conveyor belt 2, perhaps using bolts, to facilitate later assembly and disassembly of the platforms 21 as needed. To facilitate assembly and disassembly, the conveyor belt 2 is preferably made of metal, providing stable support for the platforms. The number of platforms 21 can be adjusted based on the actual length of the conveyor belt 2 to meet production needs.

[0022] The drying oven 1 is provided with a high-temperature zone 13 and a low-temperature zone 14, wherein the temperature in the high-temperature zone 13 of the drying oven 1 is higher than that in the low-temperature zone 14. A partition plate 15 is fixedly provided between the high-temperature zone 13 and the low-temperature zone 14 of the drying oven 1. The partition plate 15 can be a plate-like object made of a heat-insulating material such as a polyurethane foam board or a rock wool board. It can clearly separate the temperatures between the high-temperature zone 13 and the low-temperature zone 14, allowing the glass bottles 3 to be dried at high temperature in the high-temperature zone 13 and then quickly cooled to near room temperature in the low-temperature zone 14. The partition plate 15 is provided with a clearance slot for the placement table 21 and the glass bottles 3 to pass through at the position corresponding to the conveyor belt 2, allowing the placement table 21 and the glass bottles 3 to pass through the partition plate 15 smoothly during operation.

[0023] A heating tube and an exhaust duct are fixed to the top of the drying oven 1, corresponding to the high-temperature zone 13. The heating tube is an electric heating tube, which heats the high-temperature zone 13 inside the drying oven 1 when powered on. The exhaust duct can be connected to an external air supply device such as a blower, and the exhaust duct can also be equipped with an electric heating tube, so that the exhaust air blown out of the exhaust duct is hot air. The heating function of the heating tube and the blowing function of the exhaust duct can both dry the surface moisture of the glass bottles 3 to be dried. After drying, the glass bottles 3 pass through the partition 15 and enter the low-temperature zone 14 for cooling, so that the surface temperature of the glass bottles 3 is quickly cooled to room temperature or near room temperature, which is convenient for subsequent filling of oral liquid. The drying box 1 is provided with a cooling air duct inside the corresponding low-temperature zone 14, which can be connected to an external air supply device to blow a relatively low-temperature air flow to the glass bottles 3. At the same time, the glass bottles 3 in the low-temperature zone 14 also need to undergo a surface resistivity test to perform a drying test on the inner surface of the glass bottles 3. Therefore, the cooling air duct can be connected to an ion blower or other equipment that can provide deionized air, which can eliminate static electricity on the surface of the glass bottles 3 when the surface resistivity test is performed on the glass bottles 3, so as to prevent interference with the detection process caused by static electricity.

[0024] Further, refer to Figures 3 to 7, a blowing rod 4 is correspondingly arranged on each placing table 21. The blowing rod 4 vertically penetrates through the placing table 21 from bottom to top, and the top of the blowing rod 4 protrudes upward from the top surface of the placing table 21. The glass bottle 3 to be dried is correspondingly placed upside down outside the blowing rod 4, so that the glass bottle 3 completely covers the blowing rod 4. The height that the blowing rod 4 protrudes upward depends on the actual height of the glass bottle 3. When the bottle mouth of the glass bottle 3 is in direct contact with the top surface of the placing table 21, the top end of the blowing rod 4 does not contact the inner wall of the bottom of the glass bottle 3, so that the blowing rod 4 will not cause bump damage to the inner wall of the glass bottle 3 when placing the glass bottle 3. In other embodiments of the present application, the blowing rod 4 can also be designed as a telescopic structure of an outer cylinder and an inner cylinder, so that the blowing rod 4 can flexibly adjust its own length according to the actual size of the glass bottle 3.

[0025] The inside of the blowing rod 4 is hollow, and a through hole is provided at the top end. One end of the bottom of the blowing rod 4 can be externally connected to a gas supply device that provides hot air, or can directly share the same air source with the exhaust duct of the high-temperature area 13. To further prevent the top end of the blowing rod 4 from possibly causing bumps to the inner wall of the bottom of the glass bottle 3, a buffer pad 41 is fixed at the top end of the blowing rod 4. The buffer pad 41 can be made of elastic rubber. There is also a gap between the top end of the buffer pad 41 and the inner wall of the bottom of the glass bottle 3, and a jacking channel 42 is penetrated through the center position of the buffer pad 41. The jacking channel 42 is communicated with the hollow inner cavity of the blowing rod 4, so that the gas flowing through the blowing rod 4 can finally be sprayed onto the inner bottom wall of the glass bottle 3 through the jacking channel 42 in the center of the buffer pad 41.

[0026] During feeding, the manipulator places the glass bottle 3 to be dried upside down on the placing table 21, so that the remaining moisture in the bottle can flow out of the bottle actively under the action of its own gravity, which can greatly reduce the time for removing the moisture in the bottle. The blowing rod 4 is inserted into the glass bottle 3 from bottom to top through the bottle mouth, and then hot air is introduced into the glass bottle 3 through the blowing rod 4. After the hot air flows upward and impacts on the inner wall of the bottom of the glass bottle 3, it then moves downward along the inner side wall of the glass bottle 3. After sweeping across the inner side wall of the glass bottle 3, it finally blows out of the glass bottle 3 from the bottom bottle mouth. The hot air flow can sweep across all surfaces on the inner wall of the glass bottle 3. While actively blowing the moisture on the inner wall of the glass bottle 3 out of the bottle, it can also use the temperature of the hot air flow to dry the moisture on the inner wall of the glass bottle 3, effectively improving the drying efficiency of the moisture in the bottle and reducing the energy consumption required during the drying process.

[0027] When the air flow blows and sweeps the inner bottom wall of the glass bottle 3 through the blowing rod 4, by controlling the flow rate of the blowing air flow, the air flow can blow the glass bottle 3 upward away from the surface of the placement table 21 after hitting the inner wall of the bottle bottom. After the glass bottle 3 is blown to a suspended state, control the air flow to blow towards the glass bottle 3 at a stable flow rate, so that the glass bottle 3 always stably remains in a suspended state, and the hot air flow can smoothly blow out from the bottom bottle mouth, and the moisture inside the glass bottle 3 can also flow out from the bottle mouth. In other embodiments of the present application, a temperature sensor may be directly provided inside the blowing rod 4 or in a pipeline connected to the blowing rod 4 to monitor the temperature of the air flow blown out by the blowing rod 4, so that the temperature of the air flow blown out by the blowing rod 4 is lower than the temperature blown out by the top exhaust air pipe. The corresponding method may be to extend the length of the pipeline so that the air flow gradually decreases to the target temperature in the pipeline and then blows out.

[0028] After the inner and outer surfaces of the glass bottle 3 are dried in the high-temperature area 13, it then passes through the partition plate 15 and enters the low-temperature area 14 to receive the purge of deionized air for sufficient cooling, and at the same time, the detection of moisture drying is carried out during cooling. Since the glass bottle 3 is used to contain oral liquid, in the embodiment of the present application, the moisture detection is mainly carried out on the inner wall surface of the glass bottle 3. Specifically, the detection module includes a first detection part 5 and a second detection part 6. The surface resistivity test method can be used to detect the drying of the inner wall of the glass bottle 3. The first detection part 5 is correspondingly arranged at the top end of the blowing rod 4 and can detect the drying of the inner wall of the bottle bottom of the glass bottle 3. The second detection part 6 is correspondingly arranged on the outer wall of the blowing rod 4. When the glass bottle 3 is placed statically on the placement table 21, the second detection part 6 is correspondingly located at the bottle mouth position of the glass bottle 3 and can detect the drying of the inner wall at the bottle mouth of the glass bottle 3.

[0029] The first detection part 5 includes a first detection positive electrode 51 and a first detection negative electrode 52 arranged at intervals. In the embodiment of the present application, the first detection positive electrode 51 and the first detection negative electrode 52 are symmetrically distributed along the axis of the blowing rod 4, and the top ends of the first detection positive electrode 51 and the first detection negative electrode 52 penetrate into the blowing rod 4 from the side wall, and then penetrate upward through the buffer pad 41 at the top end of the blowing rod 4. The top ends of the first detection positive electrode 51 and the first detection negative electrode 52 are both in contact with the inner wall of the bottle bottom of the glass bottle 3. One end of the bottom of the first detection positive electrode 51 and the first detection negative electrode 52 are respectively used to connect to the positive and negative electrodes of the excitation power supply. The external power supply can apply a test voltage to the inner wall surface of the bottle bottom through the first detection positive electrode 51 and the first detection negative electrode 52, and then detect the real-time current at the voltage application position of the glass bottle 3.

[0030] Outside the drying oven 1, there is a control unit (not shown) with a chip capable of calculation and analysis. The voltage applied to the inner wall of the bottom of the glass bottle 3 by the detection electrode pair and the current data flowing through it will be transmitted to the control unit for calculation. Finally, the surface resistivity of the detection position is obtained by comparing it with the detection parameters of the fully dried glass bottle 3 sample. After the first detection positive electrode 51 and the first detection negative electrode 52 are in contact with the inner bottom wall of the glass bottle 3 at the same time, a detection voltage is applied to the inner wall of the glass bottle 3. Then, the detection electrode can transmit the measured current passing through the detection area back to the control unit. According to Ohm's law, the surface resistivity of the detection area can be calculated. If the moisture at the detection position of the glass bottle 3 is not completely dried, the passing current is relatively large, and the finally measured surface resistivity will be lower than the surface resistivity of the standard sample. At this time, it indicates that the moisture on the inner wall of the glass bottle 3 at the detection position is not completely dried, and then the glass bottle 3 continues to run in the drying oven 1 for another circle along the conveyor belt 2 for further drying; on the contrary, if the finally measured surface resistivity is equal to or greater than the surface resistivity of the standard sample, it indicates that the moisture on the inner wall of the glass bottle 3 at the detection position is completely dried, and it can be transferred to the next filling process. It should be noted that in order to control variables, the voltage applied by the detection electrode to the glass bottle 3 to be detected needs to be kept consistent with the voltage applied to the standard sample.

[0031] To avoid interference with moisture detection, the blowing rod 4 can be made of common insulating materials such as polyethylene and polyvinyl chloride. The first detection positive electrode 51 and the first detection negative electrode 52 are both made of conductive metal materials, and are both vertically slidably connected to the side wall of the blowing rod 4. Except for the top parts of the first detection positive electrode 51 and the first detection negative electrode 52 where the metal materials are exposed, the rest of the outer parts are coated with insulating protective skins. A positioning ring 53 is sleeved and slidably connected to the outer wall of the blowing rod 4. The first detection positive electrode 51 and the first detection negative electrode 52 both pass through the positioning ring 53 and are connected as a whole through the positioning ring 53, so that the first detection positive electrode 51, the first detection negative electrode 52 and the positioning ring 53 can slide up and down along the outer wall of the blowing rod 4 as a whole.

[0032] In order to always keep the tops of the first detection positive electrode 51 and the first detection negative electrode 52 in contact with the inner wall of the bottle bottom, two holders 531 are slidably connected up and down inside the positioning ring 53. The first detection positive electrode 51 and the first detection negative electrode 52 are respectively passed through one of the holders 531 and fixedly connected to the holder 531. A restoring member 532 is provided at the bottom of each holder 531. The restoring member 532 can be a spring piece. The two ends of the restoring member 532 are respectively abutted against the holder 531 and the inner wall of the positioning member. The restoring force generated after the restoring member 532 is pressed can push the holder 531 upward, so that the first detection positive electrode 51 and the first detection negative electrode 52 always keep in contact with the inner wall of the glass bottle 3. The elasticity of the restoring member 532 can be adjusted according to the actual contact situation between the electrode and the inner wall of the bottle, so that while the first detection positive electrode 51 and the first detection negative electrode 52 keep in contact with the inner wall of the bottle, no damage is caused to the inner wall of the bottle.

[0033] Further, the second detection part 6 includes a plurality of limiting blocks 61 arranged at intervals circumferentially around the outer wall of the blowing rod 4. In the embodiment of the present application, three limiting blocks 61 are provided. The three limiting blocks 61 are connected into a whole through a fixing ring. The limiting blocks 61 are vertically slidably connected to the outer wall of the blowing rod 4. The positioning ring 53 is connected to the limiting blocks 61 through a connecting member 7 to form a whole, so that the positioning ring 53 and the three limiting blocks 61 can move up and down synchronously. A pair of spaced second detection positive electrodes 62 and second detection negative electrodes 63 are respectively passed through each limiting block 61. Each pair of second detection positive electrodes 62 and second detection negative electrodes 63 can be in contact with the inner wall of the bottle mouth of the glass bottle 3 at the same time. The second detection positive electrodes 62 and second detection negative electrodes 63 can also be in the same way as the first detection positive electrode 51 and the first detection negative electrode 52, and keep in contact with the inner wall of the bottle mouth by using the holder 531 and the restoring member 532.

[0034] A gap is left between the limiting block 61 and the inner wall of the bottle mouth of the glass bottle 3. This gap provides sufficient space for the placement of the glass bottle 3, so that the inner wall of the bottle does not contact the limiting block 61 when the glass bottle 3 is properly placed. At the same time, this gap also allows the first detection positive electrode 51 and the first detection negative electrode 52 to pass through the outside of the glass bottle 3 without affecting the movement of the glass bottle 3. And the limiting block 61 is preferably made of insulating materials such as rubber or plastic, which can avoid interfering with the detection of the second detection part 6. To ensure that the second detection part 6 can rise synchronously with the glass bottle 3 when the glass bottle 3 is suspended by blowing, a tightening member 64 is provided through the side wall on the side far from the blowing rod 4 of each limiting block 61. The tightening member 64 is arranged in the middle of the same pair of second detection positive electrodes 62 and second detection negative electrodes 63. The tightening member 64 can also be made of insulating and soft materials such as silica gel. The tightening member 64 is horizontally slidably connected to the limiting block 61. When the tightening members 64 on all the limiting blocks 61 simultaneously tighten the inner wall of the bottle mouth of the glass bottle 3, all the limiting blocks 61 follow the glass bottle 3 to rise synchronously by relying on the friction force between the tightening member 64 and the inner wall of the glass bottle 3.

[0035] Further, a driving channel is formed in the limiting block 61. The pressing member 64 correspondingly slides at one end of the top of the driving channel. The other end of the driving channel can be externally connected to a blower or other air supply equipment through a pipeline, or can be directly connected to the air supply equipment homologous to the blowing rod 4 through a pipeline. The limiting block 61 is hermetically connected to the driving channel. When the external air supply equipment passes air into the driving channel, the air pressure in the driving channel increases. The pressing member 64 moves outward under the combined action of the air flow and the air pressure until it abuts against the inner wall of the glass bottle 3. The pressing force between the pressing member 64 and the inner wall of the glass bottle 3 can be adjusted multiple times in the early stage, so that the frictional force between the pressing member 64 and the inner wall of the glass bottle 3 is sufficient to support the synchronous movement of the limiting block 61.

[0036] After the glass bottle 3 is dried, the surface resistivity of the inner wall surface is tested. The first detection part 5 and the second detection part 6 are respectively arranged on the blowing rod 4. The first detection part 5 correspondingly detects the drying condition of the inner wall at the bottom of the glass bottle 3, while the second detection part 6 correspondingly detects the drying condition of the inner wall at the mouth of the glass bottle 3. These two positions are the two places where water is most likely to remain on the inner wall of the glass bottle 3. The first detection part 5 and the second detection part 6 can simultaneously detect the drying of these two positions, effectively improving the accuracy of the drying detection result of the glass bottle 3. At the same time, all the pressing members 64 are driven by the air flow to simultaneously abut against the inner wall of the mouth of the glass bottle 3. At this time, the limiting block 61 moves integrally driven by the frictional force between the pressing member 64 and the inner wall of the glass bottle 3. When the glass bottle 3 is blown up by the air flow and suspended, the glass bottle 3 can drive the second detection part 6 to rise synchronously as a whole through the pressing member 64. The limiting block 61 is connected to the positioning ring 53 as a whole through the connecting member 7. Therefore, the positioning ring 53 will also rise together with the glass bottle 3, so that the first detection positive electrode 51 and the first detection negative electrode 52 also always keep in contact with the inner wall of the glass bottle 3. Since the blowing rod 4, the limiting block 61 and the pressing member 64 are all made of insulating materials, when the glass bottle 3 is blown up and suspended by the air flow, the glass bottle 3 is separated from other external conductive objects. And at this time, both detection parts can rise synchronously with the glass bottle 3, always keeping the detection electrode in contact with the corresponding position of the inner wall of the glass bottle 3, so as to use the surface resistivity test method to detect the drying condition of the inner wall moisture. The accuracy of the result measured when the glass bottle 3 is in the suspended state is greatly improved.

[0037] When the conventional image detection method is used to detect the dry state of the glass bottle 3, there are many interference factors. Common ones include background noise interference factors. In actual production, glass products may have complex textures, colors or patterns. These background information may be misinterpreted as moisture residues or cover up the real moisture traces, resulting in deviations in the detection results. Another example is the reflection and refraction problems. Due to the transparency and reflectivity of glass, the detection of its surface features is extremely susceptible to environmental and lighting conditions, etc. Under different lighting conditions, glass will produce diverse reflection and refraction effects, which will interfere with the accurate identification of moisture residues by the image detection equipment. Another example is the hardware limitation factors. High-quality image capture requires high-performance cameras and lighting equipment, which not only increases the cost of the system but also poses higher requirements for its maintenance. Another example is the factors that need to change dynamically. In the production line environment, the glass bottle 3 is in a continuous moving state, which requires the image acquisition system to be able to respond quickly and maintain stable detection performance under continuously changing perspectives, which undoubtedly also increases the difficulty of detection.

[0038] When the surface resistivity test method is used in this application to detect the drying condition of the inner wall of the glass bottle 3, the surface resistivity test of the glass bottle 3 is carried out in a suspended state. Therefore, the interference effect of external factors on the test is greatly reduced, and thus the accuracy of the detection result is greatly improved. The surface resistivity test method can perform point-to-point detection on the inner wall of the glass bottle 3, and can detect the key positions where moisture is likely to remain on the inner wall of the glass bottle 3. Moreover, the equipment used for the surface resistivity test is relatively simple, so the cost of the detection equipment can also be effectively reduced.

[0039] The implementation principle of the drying equipment for oral liquid glass bottles in the embodiment of this application is as follows: The glass bottle 3 is dried in the high-temperature area 13. The inverted glass bottle 3 helps the residual moisture in the bottle to flow out of the bottle actively under the action of its own gravity, which can greatly reduce the time for removing moisture in the bottle. Then, the hot air flow is introduced into the glass bottle 3 by the blowing rod 4. The hot air flow can sweep all the surfaces on the inner wall of the glass bottle 3. While actively blowing the moisture on the inner wall of the glass bottle 3 out of the bottle, it can also use the temperature of the hot air flow to dry the moisture on the inner wall of the glass bottle 3, effectively improving the drying efficiency of the moisture in the bottle and reducing the energy consumption required during the drying process. Then, the glass bottle 3 is cooled in the low-temperature area 14. The glass bottle 3 is blown by the air flow to rise and suspend. The limit block 61 and the positioning ring 53 rise synchronously with the glass bottle 3, so that the first detection positive electrode 51 and the first detection negative electrode 52 always keep in contact with the inner wall of the glass bottle 3, while the second detection positive electrode 62 and the second detection negative electrode 63 always keep in contact with the inner wall of the bottle mouth. At this time, the glass bottle 3 is separated from other conductive objects in the outside world. At the same time, the surface resistivity test method is used to detect the drying condition of the inner wall moisture. The accuracy of the result measured when the glass bottle 3 is in a suspended state is greatly improved.

[0040] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A drying device for the production of oral liquid glass bottles, characterized in that: Including A drying oven, which is internally provided with a drying module and a detection module in sequence. The drying module is used to blow air to dry the glass bottles, and the detection module is used to detect the drying state of the inner wall of the glass bottles; A conveyor belt, which runs inside the drying oven. A plurality of placement platforms are arranged at intervals on the conveyor belt for the glass bottles to be placed upside down; The drying module includes a blowing component, which is used to blow up and suspend the glass bottles. The detection module uses the surface resistivity test method to detect the drying of the glass bottles in the suspended state. The detection module includes a first detection part and a second detection part. When the glass bottle is placed on the placement platform, the first detection part is used to detect the drying of the inner wall position of the bottom of the glass bottle, and the second detection part is used to detect the drying of the inner wall of the bottle mouth of the glass bottle.

2. The drying equipment for the production of oral liquid glass bottles according to claim 1, wherein: The blowing component includes a hollow blowing rod. The blowing rod corresponds to the placement platform one by one and vertically penetrates through the top surface of the placement platform. The blowing rod is used to insert into the inside of the glass bottle from bottom to top. A buffer pad is arranged at the top end of the blowing rod, and a jacking through hole is centrally formed in the buffer pad. The other end of the blowing rod is used to connect to an external air supply device, and the blowing rod is used to blow air against the inner bottom wall of the glass bottle to blow up and suspend the glass bottle.

3. The drying equipment for the production of oral liquid glass bottles according to claim 2, characterized in that: The first detection part is correspondingly arranged at the top end of the blowing rod, and the second detection part is correspondingly arranged on the outer wall of the blowing rod. When the glass bottle is placed on the placement platform, the second detection part is correspondingly located at the position of the bottle mouth of the glass bottle.

4. The drying equipment for producing oral liquid glass bottles according to claim 3, characterized in that: The first detection part and the second detection part are connected as a whole through a connecting piece, so that the first detection part and the second detection part can move synchronously.

5. The drying equipment for the production of oral liquid glass bottles according to claim 3, characterized in that: The first detection part includes a first detection positive electrode and a first detection negative electrode arranged at intervals. The top ends of the first detection positive electrode and the first detection negative electrode penetrate into the side wall of the blowing rod and then penetrate out from the top end of the blowing rod for simultaneous contact with the inner wall of the bottom of the glass bottle. The first detection positive electrode and the first detection negative electrode are both vertically slidably connected to the side wall of the blowing rod, and the blowing rod is made of insulating material.

6. The drying equipment for the production of oral liquid glass bottles according to claim 3, characterized in that: The second detection part includes a plurality of limiting blocks arranged at intervals circumferentially around the outer wall of the blowing rod. The limiting blocks are vertically slidably connected to the blowing rod. A pair of second detection positive electrodes and second detection negative electrodes arranged at intervals are correspondingly penetrated through each limiting block. The second detection positive electrode and the second detection negative electrode are used to simultaneously contact the inner wall of the bottle mouth of the glass bottle. A gap is left between the limiting block and the inner wall of the bottle mouth of the glass bottle, and the limiting block is made of insulating material.

7. The drying equipment for the production of oral liquid glass bottles according to claim 6, characterized in that: A pressing member is penetrated through the side wall of each limiting block on the side away from the blowing rod. The pressing member is horizontally slidably connected to the limiting block. The pressing member is made of insulating and soft material. The pressing members on all the limiting blocks are used to simultaneously press against the inner wall of the bottle mouth of the glass bottle so that all the limiting blocks rise synchronously with the glass bottle.

8. The drying equipment for the production of oral liquid glass bottles according to claim 7, characterized in that: A driving channel is formed in the limiting block. The pressing member is correspondingly arranged at one end of the driving channel, and the other end of the driving channel is used to connect to an external air supply device. The pressing member is used to press against the inner wall of the bottle mouth of the glass bottle under the drive of the air flow in the driving channel.

9. The drying equipment for the production of oral liquid glass bottles according to claim 3, characterized in that: A high-temperature area and a low-temperature area are provided in the drying oven. The first detection part and the second detection part are used to detect the drying of the glass bottles by the surface resistivity test method in the low-temperature area.

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