Gas card automatic filling system

Abstract

The present invention relates to the technical field of special equipment, and specifically discloses an automatic liquid filling system for a gas collecting card with high liquid filling efficiency, high precision and flexible operation, comprising a workbench, an indicator liquid filling unit, an absorption liquid filling unit, a waste liquid collection unit and a control unit, wherein the indicator liquid filling unit, the absorption liquid filling unit, the waste liquid collection unit and the control unit are respectively installed on the workbench, the indicator liquid filling unit is used to access from an external indicator liquid storage barrel and quantitatively inject the indicator into the gas collecting card, the absorption liquid filling unit is used to access from an external absorption liquid storage barrel and quantitatively inject the absorption liquid into the gas collecting card, the waste liquid collection unit is used to collect the waste liquid generated during the cleaning process of the indicator liquid filling unit, and the control unit is used to control the operation of each component.

Description

Technical Field

[0001] The invention relates to the technical field of special equipment, in particular to an automatic liquid injection system for a gas collecting card. Background Art

[0002] The gas collection card is a device used to collect carbon dioxide gas exhaled by the human body. It detects the indicators of carbon dioxide gas to indicate whether the human body is infected with certain diseases, so as to provide targeted treatment for the patient's condition. During the production process of the gas collection card, it is necessary to inject indicators and absorption liquid into the gas collection card so that medical staff can diagnose the patient's condition with the help of changes in the reagents during the detection process.

[0003] However, the traditional gas collecting card filling operation mainly adopts the manual filling method. Specifically, the operator uses a pipette to inject the indicator into the indicator cotton in the gas collecting card, and then applies the absorption liquid to the absorption pad in the gas collecting card through a homemade coating bottle. The efficiency of manual filling is low, which in turn affects the production efficiency of the gas collecting card; and the amount of reagent injected into the gas collecting card by manual filling is not easy to adjust, which will cause unstable product quality and is not conducive to improving the market competitiveness of the product. Summary of the invention

[0004] Based on this, it is necessary to provide an automatic liquid filling system for gas collection cards with continuous liquid filling and controllable liquid filling volume to address the technical problems of low operating efficiency and difficult to control liquid filling volume.

[0005] An automatic liquid injection system for a gas collecting card comprises a workbench, an indicator liquid injection unit, an absorption liquid injection unit, a waste liquid collection unit and a control unit, wherein the indicator liquid injection unit, the absorption liquid injection unit, the waste liquid collection unit and the control unit are respectively installed on the workbench, and the workbench is used to receive the gas collecting card to be injected;

[0006] The indicator injection unit comprises a plurality of first injection pumps and a plurality of injection heads, each of the injection heads being correspondingly arranged at an output end of the first injection pump, the first injection pump being used to receive the indicator from an external indicator storage barrel, and the injection head being used to quantitatively inject the indicator into the gas collection card;

[0007] The absorption liquid injection unit comprises a plurality of second injection pumps and a plurality of injection plates, each of the injection plates being arranged at an output end of the second injection pump, the second injection pump being used to receive the absorption liquid from an external absorption liquid storage tank, and the injection plate being used to quantitatively inject the absorption liquid into the gas collection card;

[0008] The first injection pump comprises a pump body and a diaphragm valve, the pump body is provided with an input interface and an output interface, the diaphragm valve is installed on the pump body and communicated with the inner cavity of the pump body, the input interface is used to connect the indicator and send the indicator into the diaphragm valve, the output interface is used to send the indicator flowing out of the diaphragm valve into the injection head, and the diaphragm valve is used to adjust the flow at the output interface;

[0009] The waste liquid collection unit includes a driving member, a collection tray and a liquid suction pump, wherein the driving member is electrically connected to the control unit, and the driving member is used to drive the collection tray to approach or move away from the output end of the injection head, and the horizontal height of the collection tray is lower than the horizontal height of the output end of the injection head, and is used to receive the waste liquid generated during the cleaning process of the first injection pump, and the liquid suction pump is connected to the bottom flow port of the collection tray and is used to send the waste liquid into an external waste liquid bucket;

[0010] The control unit includes a controller and a control screen. The controller is electrically connected to the pump body, the diaphragm valve and the suction pump respectively to control the operation of each component. The control screen is used to receive external instructions and transmit the instructions to the controller.

[0011] In one embodiment, the controller is a PLC.

[0012] In one embodiment, the indicator injection unit further includes a bracket, an injection head mounting frame and a traction mechanism, wherein the bracket is disposed on the workbench, the injection head mounting frame is slidably connected to the bracket, the injection head is mounted on the injection head mounting frame, and the traction mechanism is disposed on the bracket and connected to the injection head mounting frame, and is used for driving the injection head mounting frame and the injection head to approach or move away from the workbench surface under the control of the controller.

[0013] In one embodiment, the injection head mounting frame is provided with a first through hole and a second through hole in sequence along the vertical direction, the horizontal height of the first through hole is higher than the horizontal height of the second through hole, and the injection head is provided with the first through hole and the second through hole and are slidably connected to the injection head mounting frame respectively.

[0014] In one embodiment, an anti-collision spring is provided on the injection head, one end of the anti-collision spring is fixedly connected to the ring side of the injection head, and the other end of the anti-collision spring is abutted against the edge of the bottom of the first through hole, so as to weaken the impact of the air collecting card and the table surface of the workbench on the injection head.

[0015] In one of the embodiments, the indicator injection unit also includes an anti-overflow rubber ring, which is sleeved on the end of the injection head and connected to the injection head, and is used to abut against the edge of the indicator liquid hole when the end of the injection head is inserted into the indicator liquid hole of the gas collecting card.

[0016] In one of the embodiments, a plurality of needles are evenly arranged at the output end of the injection disk, and the needles are used to inject the absorption liquid into the absorption liquid holes of the gas collecting card.

[0017] The automatic liquid filling system for gas collecting cards of the present invention is implemented by respectively setting a plurality of first liquid filling pumps in the indicator liquid filling unit and a plurality of second liquid filling pumps in the absorbent liquid filling unit. The system can inject indicators and absorbents into a plurality of gas collecting cards at one time, thereby greatly improving the liquid filling efficiency of the gas collecting cards, thereby improving the processing efficiency of the products; the cleaning water of the first liquid filling pump is collected and processed after the operation, thereby reducing the cleaning difficulty of the system and reducing the manual workload, thereby reducing the processing cost of the products; a diaphragm valve is set in the first liquid filling pump, and the amount of indicator output by the pump body can be accurately controlled by adjusting the working parameters of the diaphragm valve, thereby improving the accuracy of the liquid filling operation and ensuring the stability of the product quality; in addition, in the liquid filling operation, the working parameters of the diaphragm valve of each first liquid filling pump can also be set separately to achieve independent control of the liquid filling amount of each gas collecting card, thereby improving the flexibility of the liquid filling operation of the gas collecting card. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of a gas collecting card in one embodiment of the present invention;

[0019] Figure 2 It is a schematic structural diagram of an automatic liquid filling system for a gas collection card in one embodiment of the present invention;

[0020] Figure 3 for Figure 2 A schematic structural diagram of another perspective of the automatic liquid injection system of the gas collection card in the embodiment shown;

[0021] Figure 4 A schematic structural diagram of a first injection pump in one embodiment of the present invention;

[0022] Figure 5 It is a structural schematic diagram of a diaphragm valve in one embodiment of the present invention;

[0023] Figure 6 for Figure 3 A schematic diagram of the local enlarged structure of part A in the illustrated embodiment. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0025] See also Figure 1 The present invention first provides an air collecting card 10, one end of which is contracted to form an air blowing portion with an air inlet 110. The air blowing portion is used to be contained in the oral cavity of the tested person during the medical test, so that the tested person can blow the gas in the oral cavity into the air collecting card 10. An air outlet (not shown) is provided on the end of the air collecting card 10 away from the air blowing portion, which is used to communicate with the external environment to ensure smooth air flow during the blowing process. The main surface of the air collecting card 10 is also provided with an indicator liquid hole 120 and an absorption liquid hole 1 30, the indicator liquid hole 120 and the absorption liquid hole 130 are respectively connected to the air outlet, and are connected to the air inlet 110 through the internal air guide groove. The gas collection card 10 is also provided with an indicator cotton corresponding to the indicator liquid hole 120 and an absorption pad corresponding to the absorption liquid hole 130, which are respectively used to receive the externally dripped indicator and absorption liquid. In this way, the gas blown out by the subject smoothly reaches the indicator liquid hole 120 and the absorption liquid hole 130, and is respectively combined with the indicator and the absorbent, which is conducive to medical personnel to diagnose the condition according to the test results. It should be noted that in this embodiment, the aperture of the indicator liquid hole 120 is much smaller than the aperture of the absorption liquid hole 130, so that different amounts of reagents can be added, which is convenient for medical personnel to perform medical tests.

[0026] Please also read Figures 2 to 4The present invention provides an automatic liquid injection system 20 for a gas collecting card, which includes a workbench 210, an indicator liquid injection unit 220, an absorption liquid injection unit 230, a waste liquid collection unit 240 and a control unit 250. The indicator liquid injection unit 220, the absorption liquid injection unit 230, the waste liquid collection unit 240 and the control unit 250 are respectively installed on the workbench 210, and the workbench 210 is used to receive the gas collecting card 10 to be injected. The indicator liquid injection unit 220 includes a plurality of first liquid injection pumps 221 and a plurality of injection heads 222, each injection head 222 is correspondingly arranged at the output end of a first liquid injection pump 221, the first liquid injection pump 221 is used to connect the indicator from the external indicator liquid storage barrel, and the injection head 222 is used to quantitatively inject the indicator into the gas collecting card 10. The absorption liquid injection unit 230 includes a plurality of second injection pumps 231 and a plurality of injection disks 232. Each injection disk 232 is correspondingly arranged at the output end of a second injection pump 231. The second injection pump 231 is used to receive the absorption liquid from the external absorption liquid storage barrel. The injection disk 232 is used to quantitatively inject the absorption liquid into the gas collection card 10. The first injection pump 221 includes a pump body 223 and a diaphragm valve 224. The pump body 223 is provided with an input interface 223a and an output interface 223b. The diaphragm valve 224 is installed on the pump body 223 and communicated with the inner cavity of the pump body 223. The input interface 223a is used to receive the indicator and send the indicator into the diaphragm valve 224. The output interface 223b is used to send the indicator flowing out of the diaphragm valve 224 into the injection head 222. The diaphragm valve 224 is used to adjust the flow at the output interface 223b. The waste liquid collection unit 240 includes a driving member 241, a collection tray 242 and a liquid suction pump 243. The driving member 241 is electrically connected to the control unit 250. The driving member 241 is used to drive the collection tray 242 to approach or move away from the output end of the injection head 222. The horizontal height of the collection tray 242 is lower than the horizontal height of the output end of the injection head 222. It is used to receive the waste liquid generated during the cleaning process of the first injection pump 221. The liquid suction pump 243 is connected to the bottom flow port of the collection tray 242 and is used to send the waste liquid into an external waste liquid barrel. The control unit 250 includes a controller 251 and a control panel 252. The controller 251 is electrically connected to the pump body 223, the diaphragm valve 224 and the liquid suction pump 243 respectively, and is used to control the operation of each component. The control panel 252 is used to receive external instructions and transmit the instructions to the controller 251.

[0027] The automatic liquid injection system 20 for gas collecting cards of the present invention is implemented. By respectively setting a plurality of first liquid injection pumps 221 in the indicator liquid injection unit 220 and a plurality of second liquid injection pumps 231 in the absorbent liquid injection unit 230, the system can inject indicators and absorbents into a plurality of gas collecting cards 10 at one time, thereby greatly improving the liquid injection efficiency of the gas collecting cards 10, thereby improving the processing efficiency of the products; after the operation, the cleaning water of the first liquid injection pump 221 is collected and processed, thereby reducing the cleaning difficulty of the system and reducing the manual labor, thereby reducing the processing cost of the products; a diaphragm valve 224 is set in the first liquid injection pump 221, and by adjusting the working parameters of the diaphragm valve 224, the amount of the indicator output by the pump body 223 can be accurately controlled, thereby improving the accuracy of the liquid injection operation and ensuring the stability of the product quality; in addition, during the liquid injection operation, the working parameters of the diaphragm valve 224 of each first liquid injection pump 221 can also be set separately to achieve independent control of the liquid injection amount of each gas collecting card 10, thereby improving the flexibility of the liquid injection operation of the gas collecting card 10.

[0028] The workbench 210 can not only receive the gas collecting card 10 for liquid injection, but also realize the installation and setting of each unit to raise the horizontal height of each unit for easy operation. In one embodiment, a card slot 211 that matches the shape of the gas collecting card 10 is provided on the table surface of the workbench 210 to limit the position of the gas collecting card 10 and prevent the gas collecting card 10 from being offset during the liquid injection process, causing the problem of liquid injection misalignment, so as to ensure the reliability of the liquid injection operation. Furthermore, a through hole with the same shape and size as the indicator liquid hole 120 and the absorption liquid hole 130 is also provided at the bottom of the card slot 211 to reduce the resistance of the air column in the card slot 211 during the process of placing the gas collecting card 10 into the card slot 211, thereby reducing the difficulty of placing the gas collecting card 10. In addition, the through hole can also be used as an avoidance hole or a leakage hole to avoid damage caused by the injection head 222 impacting the bottom of the card slot 211, and provide a flow channel for cleaning waste liquid during the equipment cleaning process to prevent the cleaning waste liquid from accumulating on the workbench 210 and contaminating the gas collecting card 10 in subsequent operations.

[0029] The indicator injection unit 220 is used to quantitatively inject the indicator into the indicator liquid hole 120 of the gas collection card 10. Specifically, the indicator injection unit 220 receives the indicator from the external indicator liquid storage barrel through the pump body 223 under the control of the controller 251. This part of the indicator then enters the diaphragm valve 224 and is quantitatively input into the injection head 222 one by one under the interval cut-off effect of the diaphragm valve 224, thereby achieving the purpose of controlling the amount of indicator injection. The present invention adopts the electric diaphragm valve 224 to control the flow of the indicator. For details, please refer to Figures 3 to 5In one embodiment, the diaphragm valve 224 includes a valve body 224a, a valve cover 224b, a servo motor 224c, a screw rod 224d, a valve stem 224e and a diaphragm 224f. A flow channel 224g is provided in the valve body 224a. One end of the flow channel 224g is communicated with the input interface 223a of the pump body 223, and the other end of the flow channel 224g is communicated with the output interface 223b of the pump body 223. The valve cover 224b can be opened and closed and is arranged at the top opening of the valve body 224a. The servo motor 224c is installed on the valve cover 224b and is electrically connected to the controller 251. One end of the screw rod 224d is connected to the output end of the servo motor 224c, and the other end of the screw rod 224d passes through the valve cover 224b. And penetrate into the flow channel 224g, the valve stem 224e and the diaphragm 224f are accommodated in the flow channel 224g, one end of the valve stem 224e is away from the servo motor 224c and connected to the screw rod 224d, the other end of the valve stem 224e is connected to the diaphragm 224f, and the periphery of the diaphragm 224f is in contact with the inner surface of the valve body 224a to separate the flow channel 224g from forming two chambers that are independently closed from top to bottom. Under the action of the screw rod 224d, the valve stem 224e drives the diaphragm 224f to periodically approach or move away from the inner surface of the bottom of the valve body 224a to block or pass through the lower chamber in the flow channel 224g, periodically intercept the reagent, and thus realize the flow control of the indicator.

[0030] In one embodiment, the indicator injection unit 220 also includes a bracket 225, an injection head mounting frame 226 and a traction mechanism 227. The bracket 225 is arranged on the workbench 210, the injection head mounting frame 226 is slidably connected to the bracket 225, the injection head 222 is installed on the injection head mounting frame 226, and the traction mechanism 227 is arranged on the bracket 225 and connected to the injection head mounting frame 226, and is used to drive the injection head mounting frame 226 and the injection head 222 to approach or move away from the table surface of the workbench 210 under the control of the controller 251. Specifically, since the indicator liquid hole 120 of the gas collecting card 10 is relatively small in size, during the injection process of the indicator, the traction mechanism 227, under the action of the controller 251, drives the injection head mounting frame 226 and the injection head 222 to periodically approach and abut against the surface of the gas collecting card 10 to prevent the indicator from splashing on the surface of the gas collecting card 10 and thereby contaminating the product; after the indicator injection operation is completed, the traction mechanism 227, under the action of the controller 251, pulls the injection head mounting frame 226 and the injection head 222 to reset, so as to facilitate the gas collecting card 10 on the moving workbench 210 and to facilitate the continuous injection operation of the gas collecting card 10.

[0031] See also Figure 6In one embodiment, the injection head mounting frame 226 is provided with a first through hole 226a and a second through hole 226b in sequence along the vertical direction, the horizontal height of the first through hole 226a is higher than the horizontal height of the second through hole 226b, and the injection head 222 is provided with the first through hole 226a and the second through hole 226b and is respectively slidably connected to the injection head mounting frame 226. Further, an anti-collision spring 228 is sleeved on the injection head 222, one end of the anti-collision spring 228 is fixedly connected to the ring side surface of the injection head 222, and the other end of the anti-collision spring 228 is in contact with the edge of the bottom of the first through hole 226a, so as to weaken the impact of the gas collecting card 10 and the table surface of the workbench 210 on the injection head 222. Specifically, when the traction mechanism 227 drives the injection head mounting frame 226 and the injection head 222 to move toward the gas collecting card 10, when the injection head 222 contacts the indicator cotton in the gas collecting card 10, the injection head 222 retracts under the reaction force of the indicator cotton, thereby compressing the anti-collision spring 228, and the kinetic energy of the injection head 222 is converted into the elastic potential energy of the anti-collision spring 228 and the gravity potential energy of the injection head 222, thereby reducing the impact of the gas collecting card 10 and the workbench 210 on the injection head 222, which is conducive to extending the service life of the injection head 222. After the injection operation is completed, the injection head 222 leaves the gas collecting card 10, and the constraint of the anti-collision spring 228 is released, that is, the injection head 222 is driven to reset.

[0032] In one embodiment, the indicator injection unit 220 further includes an anti-overflow rubber ring 229, which is sleeved on the end of the injection head 222 and connected to the injection head 222, and is used to abut against the edge of the indicator liquid hole 120 when the end of the injection head 222 is inserted into the indicator liquid hole 120 of the gas collection card 10. In other words, the anti-overflow rubber ring 229 is used to block the gap between the indicator liquid hole 120 and the injection head 222 to prevent the indicator from overflowing during the injection process, so as to ensure the reliability of the indicator injection operation.

[0033] The absorption liquid injection unit 230 is used to quantitatively inject absorption liquid into the absorption liquid hole 130 of the gas collection card 10. It should be particularly noted that the structure of the first injection pump 221 of the present invention is consistent with the structure and working principle of the second injection pump 231. The difference between the two lies in the installation position and the reagents connected or discharged at the input and output ends. In other words, the second injection pump 231 also has the same pump body 223 and diaphragm valve 224 as the first injection pump 221 to adjust the flow of the absorption liquid in the second injection pump 231 to achieve precise control of the reagent. The structure and working principle of the second injection pump 231 can refer to the aforementioned description of the structural principle of the first injection pump 221, which will not be repeated here.

[0034] The difference between the absorption liquid injection unit 230 of the present invention and the indicator injection unit 220 is that the indicator injection unit 220 is used to inject the indicator into the indicator liquid hole 120 with a smaller aperture. Therefore, in order to ensure the reliability of the injection operation, the injection head 222 needs to be frequently moved close to or away from the indicator liquid hole 120 of the gas collecting card 10 to prevent the indicator from splashing. The absorption liquid injection unit 230 is used to inject the absorption liquid into the absorption liquid hole 130 with a larger aperture. In this way, the absorption liquid can still be injected into the absorption liquid hole 130 without moving the injection plate 232 of the absorption liquid injection unit 230. In one embodiment, a plurality of needles are evenly arranged at the output end of the injection plate 232, and the needles are used to inject the absorption liquid into the absorption liquid hole 130 of the gas collecting card 10. By setting a plurality of needles, the absorption liquid output by the second injection pump 231 is divided into a plurality of smaller liquid streams, which reduces the possibility of the absorption liquid splashing due to the absorption liquid stream impacting the absorption pad. In addition, by setting up multiple needles, the liquid delivery area of ​​the injection plate 232 is increased, so that the absorption liquid can be evenly coated on the absorption pad, which is convenient for medical personnel to check and operate. It should be noted that in this embodiment, when the gas in the gas collection card 10 is tested once, the absorption liquid is injected multiple times to improve the detection effect. Specifically, the pump body 223 of the second injection pump 231 absorbs a certain amount of absorption liquid at a time, divides the absorption liquid into multiple equal parts through the diaphragm valve 224, and injects the absorption liquid hole 130 of the gas collection card 10 at intervals for multiple times. In this way, the problem of insufficient detection effect caused by the slow penetration rate of the absorption liquid on the absorption pad during a single injection is avoided. The absorption liquid can fully penetrate the absorption pad in the gas collection card 10, and the amount of reagent involved in the detection on the absorption pad is relatively large, thereby improving the accuracy of the detection.

[0035] The waste liquid collection unit 240 is used to collect the waste liquid generated during the cleaning process of the indicator injection unit 220 to prevent the waste liquid from splashing onto the workbench 210, so as to reduce the difficulty of equipment cleaning and maintenance. Specifically, after the first injection pump 221 and the injection head 222 are cleaned, the driving member 241 drives the collection plate 242 close to the output end of the injection head 222 under the action of the controller 251 to receive the waste liquid generated by the cleaning of the first injection pump 221 and the injection head 222. The collected waste liquid enters the suction pump 243 through the liquid collection hose and finally flows into the external waste liquid barrel, so as to centrally treat the waste liquid. After the waste liquid is collected, the driving member 241 drives the collection plate 242 to reset under the action of the controller 251, so that the first injection pump 221 can inject liquid into the gas collection card 10 in subsequent operations. It should be noted that the waste liquid collection unit 240 of the present invention includes two driving members 241, two collecting trays 242 and two suction pumps 243, wherein one collecting tray 242 collects the waste liquid generated by the cleaning of the indicator injection unit 220 under the drive of the corresponding driving member 241, and sends it to a waste liquid barrel via a suction pump 243; the other collecting tray 242 collects the waste liquid generated by the cleaning of the absorption liquid injection unit 230 under the drive of the corresponding driving member 241, and sends it to another waste liquid barrel via another suction pump 243, so as to facilitate the classification and treatment of the waste liquid. Of course, the collection tray 242 of the corresponding indicator injection unit 220 and the collection tray 242 of the corresponding absorption liquid injection unit 230 can also share the same driving member 241 and suction pump 243 to reduce the system operating cost.

[0036] The control unit 250 is used to control the various electrical components in the regulating system to achieve automated management of the liquid injection operation of the gas collecting card 10. In one embodiment, the controller 251 is a PLC. PLC, also known as a programmable logic controller, uses a programmable memory and stores programs inside the memory to execute user-oriented instructions such as logical operations, sequential control, timing, counting and arithmetic operations, and controls various types of machinery or production processes through digital or analog input / output. In one embodiment, the CPU inside the PLC can be programmed so that the cleaning operations of the indicator injection unit 220 and the absorption liquid injection unit 230 are linked with the action of the waste liquid collection unit 240. Specifically, a contact with the same name as the contact coil on the control circuit of the PLC and the waste liquid collection unit 240 is set on the control circuit of the PLC and the external washing water device. In this way, when the PLC controls the external washing water device to pass washing water into the indicator injection unit 220 and / or the absorption liquid injection unit 230, the PLC synchronously controls the drive part 241 and the suction pump 243 of the waste liquid collection unit 240 to operate, so that the collection plate 242 can promptly receive the washing waste liquid, thereby reducing the difficulty of washing the waste liquid and further improving the automation level of the system.

[0037] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0038] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An automatic liquid filling system (20) for a gas collecting card, characterized in that: The invention comprises a workbench (210), an indicator injection unit (220), an absorption liquid injection unit (230), a waste liquid collection unit (240) and a control unit (250); the indicator injection unit (220), the absorption liquid injection unit (230), the waste liquid collection unit (240) and the control unit (250) are respectively installed on the workbench (210); and the workbench (210) is used to receive a gas collection card (10) for injection; The indicator injection unit (220) comprises a plurality of first injection pumps (221) and a plurality of injection heads (222), each of the injection heads (222) being arranged at a corresponding output end of one of the first injection pumps (221), the first injection pump (221) being used to receive the indicator from an external indicator storage tank, and the injection head (222) being used to quantitatively inject the indicator into the gas collection card (10); The absorption liquid injection unit (230) comprises a plurality of second injection pumps (231) and a plurality of injection disks (232), each of the injection disks (232) being arranged at a corresponding output end of one of the second injection pumps (231), the second injection pump (231) being used to receive absorption liquid from an external absorption liquid storage tank, and the injection disk (232) being used to quantitatively inject the absorption liquid into the gas collection card (10); The first injection pump (221) comprises a pump body (223) and a diaphragm valve (224); the pump body (223) is provided with an input interface (223a) and an output interface (223b); the diaphragm valve (224) is installed on the pump body (223) and is in communication with the inner cavity of the pump body (223); the input interface (223a) is used to receive the indicator and deliver the indicator into the diaphragm valve (224); the output interface (223b) is used to deliver the indicator flowing out of the diaphragm valve (224) into the injection head (222); and the diaphragm valve (224) is used to adjust the flow rate at the output interface (223b); The waste liquid collection unit (240) comprises a driving member (241), a collection plate (242) and a liquid suction pump (243); the driving member (241) is electrically connected to the control unit (250); the driving member (241) is used to drive the collection plate (242) to approach or move away from the output end of the injection head (222); and the horizontal height of the collection plate (242) is lower than the horizontal height of the output end of the injection head (222), and is used to receive the waste liquid generated during the cleaning process of the first injection pump (221); the liquid suction pump (243) is connected to the bottom flow port of the collection plate (242) and is used to send the waste liquid into an external waste liquid bucket; The control unit (250) includes a controller (251) and a control screen (252). The controller (251) is electrically connected to the pump body (223), the diaphragm valve (224) and the suction pump (243) respectively, and is used to control the operation of each component. The control screen (252) is used to receive external instructions and transmit the instructions to the controller (251).

2. The automatic liquid filling system (20) for gas collection cards according to claim 1, characterized in that: The controller (251) is a PLC.

3. The automatic liquid filling system (20) for gas collection cards according to claim 1, characterized in that: The indicator injection unit (220) further comprises a bracket (225), an injection head mounting frame (226) and a traction mechanism (227); the bracket (225) is arranged on the workbench (210); the injection head mounting frame (226) is slidably connected to the bracket (225); the injection head (222) is mounted on the injection head mounting frame (226); the traction mechanism (227) is arranged on the bracket (225) and connected to the injection head mounting frame (226), and is used for driving the injection head mounting frame (226) and the injection head (222) to approach or move away from the table surface of the workbench (210) under the control of the controller (251).

4. The automatic liquid filling system (20) for gas collection cards according to claim 3, characterized in that: The injection head mounting frame (226) is provided with a first through hole (226a) and a second through hole (226b) in sequence along the vertical direction, the horizontal height of the first through hole (226a) is higher than the horizontal height of the second through hole (226b), and the injection head (222) is provided with the first through hole (226a) and the second through hole (226b) and are respectively slidably connected to the injection head mounting frame (226).

5. The automatic liquid filling system (20) for gas collection cards according to claim 4, characterized in that: An anti-collision spring (228) is sleeved on the injection head (222), one end of the anti-collision spring (228) is fixedly connected to the ring side of the injection head (222), and the other end of the anti-collision spring (228) is abutted against the edge of the bottom of the first through hole (226a), so as to weaken the impact of the gas collecting card (10) and the table surface of the workbench (210) on the injection head (222).

6. The automatic liquid filling system (20) for gas collection cards according to claim 5, characterized in that: The indicator liquid injection unit (220) further comprises an anti-overflow rubber ring (229), which is sleeved on the end of the injection head (222) and connected to the injection head (222) and is used for abutting against the edge of the indicator liquid hole (120) when the end of the injection head (222) is inserted into the indicator liquid hole (120) of the gas collection card (10).

7. The automatic liquid filling system (20) for gas collection cards according to claim 1, characterized in that: The output end of the injection disk (232) is evenly provided with a plurality of needles, and the needles are used to inject the absorption liquid into the absorption liquid hole (130) of the gas collection card (10).

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