Portable fire extinguisher liquid filling device and filling method thereof

Abstract

The present application relates to filling equipment technical field, specifically to a portable fire extinguisher liquid filling device and its filling method, including support frame, liquid storage tank, liquid distribution unit, air extraction unit, filling unit, conveying unit and clamping unit, two air bags are installed on the filling pipe, the air pump inflates the air bags, the filling pipe is inclined, and the bottom of the filling pipe is attached to the inner wall of the fire extinguisher, the liquid flows out through the bottom of the filling pipe attached to the inner wall of the fire extinguisher, the generation of bubbles is reduced, and the generation of static electricity is also reduced; the air extraction unit is installed on the two liquid distribution pipes, the air in the fire extinguisher can be extracted before filling starts, a vacuum negative pressure is formed in the fire extinguisher, the liquid filling can be better completed, the contact between the liquid and air is avoided, the service life of the fire extinguisher is increased, and the filling efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of filling equipment, in particular to a portable fire extinguisher liquid filling device and a filling method thereof. BACKGROUND

[0002] A fire extinguisher is a portable fire extinguishing tool, and chemical products are placed in the fire extinguisher to extinguish fires. The fire extinguisher is one of the common fire-fighting equipment, which is stored in public places or places where fires may occur. Different types of fire extinguishers contain different components. The most commonly used in life is the water-based fire extinguisher, and the main components of the agent are surfactants and treated pure water.

[0003] During the filling process of the portable fire extinguisher liquid, the inventor found that there were still some problems in the filling process, as follows:

[0004] 1. During the filling process of the traditional fire extinguisher liquid, a direct filling method is usually used, that is, the filling pipe is directly inserted into the fire extinguisher, and the liquid will collide with the bottom of the fire extinguisher. A large amount of bubbles will be generated during the collision process, which will affect the filling efficiency.

[0005] 2. During the filling process of the traditional fire extinguisher liquid, the pipe is directly inserted into the fire extinguisher for liquid filling. During the liquid filling process, the liquid will come into contact with the air in the fire extinguisher. After the liquid comes into contact with the air, an oxidation reaction will occur. The extinguishing efficiency of the oxidized liquid will be reduced, which will affect the subsequent use of the fire extinguisher.

[0006] Therefore, in order to solve the above technical problems, the present application provides a portable fire extinguisher liquid filling device and a filling method thereof, which has the following advantages:

[0007] 1. The present application installs two air bags on the filling pipe, installs a micro-pump and a micro-inflator on the side of the sealing cover, and inflates the air bags by the inflator. The filling pipe is inclined, and the brush at the bottom of the filling pipe is attached to the inner wall of the fire extinguisher. The liquid flows out through the brush at the bottom of the filling pipe. Since the brush has a buffering effect on the liquid, the collision intensity of the liquid with the inner wall of the fire extinguisher is reduced. At the same time, the liquid will seep out from the root of the brush along the brush. Since the brush is attached to the inner wall of the fire extinguisher, the liquid will slide down to the bottom of the fire extinguisher along the inner wall of the fire extinguisher, effectively reducing the generation of bubbles and improving the filling efficiency.

[0008] 2. The present application installs an air extraction unit on the two liquid separation pipes. The air in the fire extinguisher can be extracted before the filling starts, and a vacuum negative pressure is formed in the fire extinguisher. The liquid can be filled better, and the contact between the liquid and the air is avoided, thereby increasing the service life of the fire extinguisher. SUMMARY

[0009] The technical problems to be solved by the present application are to provide a portable fire extinguisher liquid filling device, install an air bag in a sealing cover, control the air pump to inflate the air bag to tilt the filling pipe, install a brush at the bottom of the filling pipe, and make the liquid slide along the inner wall of the fire extinguisher to the bottom of the fire extinguisher, effectively reducing the generation of bubbles during the filling process, and improving the filling efficiency.

[0010] The present application also provides a filling method of the filling device.

[0011] The present application provides the following technical solutions: a portable fire extinguisher liquid filling device, comprising a support frame, a liquid storage tank, a power unit, a control unit and a liquid delivery pipe, the support frame is fixedly installed with the liquid storage tank at the top, the control unit is fixedly installed on the side of the support frame, the power unit is fixed on the ground, and the liquid delivery pipe is fixedly connected with the bottom of the liquid storage tank through the support frame; a filling unit is fixedly installed at the bottom end of the liquid delivery pipe, and the filling unit is used for filling liquid; wherein:

[0012] The filling unit comprises a sliding pipe, a sealing cover, a micro air pump, a micro air pump, an air bag and a filling pipe, the sliding pipe is slidingly installed at the bottom of the liquid distribution unit, and the sliding pipe is used for adjusting the filling unit to make the filling unit fit the fire extinguisher; the sealing cover is fixedly installed on the sliding pipe, and the sealing cover is used for sealing with the fire extinguisher to prevent liquid leakage and external air from entering; the sealing cover is a hollow structure, the micro air pump is fixedly installed on the left side of the sealing cover, the micro air pump is fixedly installed on the right side of the sealing cover, and the micro air pump and the micro air pump are used for pumping air and inflating the air bag; two air bags are fixedly installed on the top inner surface of the sealing cover, the two air bags are distributed on both sides of the center line of the sealing cover, and the two air bags are used for tilting the filling pipe; the left air bag is larger than the right air bag, and the two air bags completely expand to cover the entire bottle opening of the fire extinguisher; the air bags are sealingly connected with the micro air pump and the micro air pump respectively; the filling pipe is rotatably and sealingly installed on the inner top surface of the sealing cover, and the filling pipe is distributed between the two air bags;

[0013] When the filling unit is working, the control unit drives the slide tube to slide downward by driving the cylinder, and the slide tube is used to cooperate with the dispensing unit to transport the liquid medicine to the filling unit, and the control unit drives the sealing cover to rotate along its axis by driving the cylinder, and the sealing cover is sealingly connected with the fire extinguisher port by threads; at this time, the miniature air pump starts to inflate, and the two air bags are fully stretched, and the filling pipe is inclined due to the different sizes of the two air bags, so that the bottom of the filling pipe is attached to the inner wall of the fire extinguisher cylinder, and the filling starts, and the liquid medicine in the filling pipe contacts the inner wall and flows downward, which can effectively reduce the generation of bubbles; when the filling is completed, the miniature air pump starts to exhaust, the two air bags start to shrink, and the filling pipe starts to slowly restore the vertical state, at this time the sealing cover reversely rotates, the slide tube slides upward, at this time the filling unit is used to cooperate with the clamping unit to release the fire extinguisher, and the filling unit is used to cooperate with the conveying unit to send out the fire extinguisher, and the filling unit starts to fill the next fire extinguisher.

[0014] Preferably, a dispensing unit is installed on the support frame, and the dispensing unit is used to quantitatively and periodically transmit the liquid medicine in the liquid storage tank to the filling unit.

[0015] The dispensing unit comprises a T-shaped pipeline, a first electromagnetic valve, a second electromagnetic valve and a dispensing cylinder, the liquid storage tank is fixedly connected with the T-shaped pipeline, the T-shaped pipeline has two pipelines and is symmetrically distributed about the center line of the liquid storage tank, a first electromagnetic valve is fixedly installed on the inner wall of the T-shaped pipeline and coaxially arranged on the side close to the liquid storage tank, a second electromagnetic valve is fixedly installed on the inner wall of the T-shaped pipeline and coaxially arranged on the side away from the liquid storage tank, and the electromagnetic valves are used to control the flow of the liquid medicine; the dispensing cylinder is fixedly installed on the left side of the T-shaped pipeline, the extending arm of the dispensing cylinder penetrates through the T-shaped pipeline and slides in the T-shaped pipeline, and the dispensing cylinder is used to push the liquid medicine in the dispensing unit out to cooperate with the filling of the next filling unit; the first electromagnetic valve is opened at the same time when the second electromagnetic valve is closed.

[0016] When the dispensing unit is working, the control unit controls the first electromagnetic valve to be opened, the liquid medicine in the liquid storage tank flows into the T-shaped pipeline under the action of its own gravity, and the control unit controls the extending arm of the dispensing cylinder to be retracted at this time, and the T-shaped pipeline is filled with liquid medicine; when the lower filling unit is fixedly sealed, the control unit controls the first electromagnetic valve to be closed, and the control unit 2 controls the extending arm of the dispensing cylinder 44 to extend, the extending arm of the dispensing cylinder 44 pushes the liquid medicine to flow, the liquid medicine flows into the filling unit through the second electric piston, and the filling unit starts to fill.

[0017] Preferably, an air extraction unit is installed between the two pipelines of the dispensing unit, and the air extraction unit is used to extract the gas in the fire extinguisher.

[0018] The air extraction unit comprises a connecting pipe, an electromagnetic valve, a negative pressure pump and a pressure sensor, the T-shaped connecting pipe is fixedly connected at the middle of the two T-shaped pipes, electromagnetic valves are installed on the two sides of the T-shaped connecting pipe respectively, and the electromagnetic valves are used for controlling the gas flow in the T-shaped pipe; the extending end of the T-shaped connecting pipe is fixedly connected with the negative pressure pump and the pressure sensor, the pressure sensor is located above the negative pressure pump, the negative pressure pump is used for extracting the gas in the fire extinguisher to prevent the liquid medicine from contacting with the gas, and the pressure sensor is used for detecting the pressure in the fire extinguisher;

[0019] When the air extraction unit works, the negative pressure pump is started, the control unit controls the electromagnetic valve in the T-shaped pipe to open, the negative pressure pump starts to extract the gas in the fire extinguisher, and the pressure sensor starts to detect the pressure in the fire extinguisher; when the detected pressure is 0.05 MPa, information is transmitted to the control unit, the control unit controls the electromagnetic valve to close, and the negative pressure pump stops extracting the gas, so that the air extraction unit is used for cooperating with the filling unit to fill the liquid medicine into the fire extinguisher.

[0020] Preferably, a conveying unit is fixedly installed at the bottom of the support frame, and the conveying unit is used for cooperating with the control unit to control the transportation of the fire extinguisher.

[0021] The conveying unit comprises a support plate, a positioning plate, a conveying belt and a conveying shaft, the support plate is fixedly installed on the support frame and is used for supporting the conveying belt, the positioning plate is fixedly installed on the support plate and has two parts which are symmetrical about the conveying belt, the positioning plate is used for positioning the conveyed fire extinguisher to ensure that the fire extinguisher is conveyed linearly along the conveying belt, the conveying belt is installed above the support plate and is located between the two positioning plates, and the conveying shaft is rotatably installed on the two sides of the support plate and is located between the support plate and the conveying belt.

[0022] When the conveying unit starts to work, the control unit controls the conveying shaft to rotate through the motor, the conveying shaft drives the conveying belt to rotate, the conveying belt stops after the fire extinguisher on the surface of the conveying belt is moved to the filling station through the rotating movement, and the next fire extinguisher is transported after the filling is completed.

[0023] Preferably, a clamping unit is fixedly installed on the conveying unit, and the clamping unit is used for clamping the fire extinguisher.

[0024] The clamping unit comprises clamping cylinders, clamping plates and infrared sensors, the clamping cylinders are fixedly connected to the extending plates of the positioning plates, the clamping cylinders have two groups which are symmetrically distributed on the two sides of the conveying belt, the clamping function of the fire extinguisher is realized through the relative movement of the clamping cylinders on the two sides, the extending arms of the four clamping cylinders are fixedly installed with the clamping plates, the clamping plates are fixedly installed with the infrared sensors, and the infrared sensors are used for detecting the position of the fire extinguisher.

[0025] When the clamping unit works, the fire extinguisher is first moved to the filling station on the conveying belt, the infrared sensor senses the fire extinguisher and transmits information to the control unit, the control unit controls the clamping cylinder on both sides of the conveying belt to extend the arm to extend, the clamping cylinder extension arm drives the clamping plate to move, the clamping plate is provided with an arc-shaped groove, and the two clamping plates clamp the fire extinguisher through the arc-shaped groove, and cooperate with the subsequent filling unit to fill.

[0026] Preferably, a corrugated pipe is fixedly installed between the sealing cover and the filling pipe, and the corrugated pipe is made of PE material; the corruggated pipe can make the filling pipe rotate better under the action of the air bag and also increase the service life of the filling pipe; when the air bag expands, the corrugated pipe starts to bend under the action of the air bag, and the air bag drives the filling pipe to tilt; the PE material has strong plasticity and can better recover when deformation occurs, and is also corrosion-resistant.

[0027] Preferably, a fan-shaped nozzle is installed at the bottom of the filling pipe; the fan-shaped nozzle can effectively reduce the flow rate of the liquid medicine in the filling pipe; according to the fluid mechanics formula Q=SV, when the liquid medicine flow Q is constant, the flow rate V of the liquid medicine is inversely proportional to the cross-sectional area S of the liquid medicine pipeline, that is, when the filling pipe is installed with the fan-shaped nozzle, the cross-sectional area S of the pipeline increases, and the flow rate V of the liquid medicine decreases; therefore, the fan-shaped nozzle can effectively reduce the flow rate of the liquid medicine in the filling pipe, and the flow rate is reduced, so that the bubbles are reduced during the filling process of the liquid medicine.

[0028] Preferably, a brush is installed around the bottom of the fan-shaped nozzle, and the brush is made of nylon wire added with an antistatic agent; the brush installed at the bottom of the fan-shaped nozzle can effectively reduce the collision intensity of the liquid medicine and the inner wall of the fire extinguisher, and the brush is made of nylon wire added with an antistatic agent, which has strong corrosion resistance and high flexibility, can be used for a long time, and can also absorb static electricity generated by friction between the liquid medicine and the inner wall of the fire extinguisher.

[0029] Preferably, the filling pipe is made of a hot-dipped galvanized steel pipe, which has strong corrosion resistance and a long service life, and the toughness of the hot-dipped galvanized pipe coating can withstand mechanical damage to the filling pipe during filling.

[0030] The filling method comprises the following steps:

[0031] 1) The fire extinguisher is placed on the conveying belt, the conveying belt conveys the fire extinguisher to the filling station, the infrared sensor detects the filling station, when the fire extinguisher is detected, the control unit controls the clamping cylinder to push the clamping plate to clamp the fire extinguisher, and the liquid distribution unit starts to distribute liquid and stores the liquid medicine in the liquid distribution unit;

[0032] 2) sliding tube in filling unit slides down, while sealing cover is sealed with fire extinguisher through thread, filling tube extends into fire extinguisher, at this time, air pump in sealing cover starts to inflate, air bag is fully inflated to drive corrugated tube to bend, corrugated tube drives filling tube to bend, filling tube drives brush to adhere to inner wall of fire extinguisher;

[0033] 3) No. 2 electromagnetic valve in separating unit is opened, liquid medicine is filled into fire extinguisher through filling unit, after filling is completed, control unit controls sliding tube to slide up through driving cylinder, filled fire extinguisher is conveyed to delivery filling station, and filling of next fire extinguisher is prepared.

[0034] The beneficial effects of the present application are as follows:

[0035] 1. The present application installs two air bags on the filling tube, installs a micro air pump and a micro air pump on the side of the sealing cover, inflates the air bag through the air pump to make the filling tube tilt, and the brush at the bottom of the filling tube adheres to the inner wall of the fire extinguisher, the liquid medicine flows out through the brush at the bottom of the filling tube, since the brush has a buffering effect on the liquid medicine, the collision intensity of the liquid medicine with the inner wall of the fire extinguisher is reduced, and the liquid medicine also seeps out from the root of the brush along the brush, since the brush adheres to the inner wall of the fire extinguisher, the liquid medicine will slide down to the bottom of the fire extinguisher along the inner wall of the fire extinguisher, effectively reducing the generation of bubbles and improving the filling efficiency.

[0036] 2. The present application installs an air extraction unit on two separating pipes, which can extract air in the fire extinguisher before filling starts, and form a vacuum negative pressure in the fire extinguisher, so that the liquid medicine can be filled better, and contact between the liquid medicine and air is avoided, thereby increasing the service life of the fire extinguisher. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following specific embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0038] Figure 1 It is a whole schematic diagram of the present application;

[0039] Figure 2 It is a cross-sectional view of the retraction of the filling unit of the present application;

[0040] Figure 3 It is a cross-sectional view of the filling unit of the present application;

[0041] Figure 4 It is a cross-sectional view of the filling unit of the present application when working;

[0042] Figure 5 is a partial enlarged view of the filling unit of the present application;

[0043] Figure 6 is a cross-sectional view of the filling unit of the present application;

[0044] Figure 7 is a schematic view of the conveying unit of the present application;

[0045] Figure 8 is a schematic view of the clamping unit of the present application.

[0046] In the figure: support frame 1, control unit 2, filling unit 3, sliding tube 31, sealing cover 32, micro suction pump 33, micro inflation pump 34, air bag 35, filling tube 36, corrugated tube 37, fan-shaped nozzle 38, brush 39, liquid separation unit 4, T-shaped pipe 41, No. 1 electromagnetic valve 42, No. 2 electromagnetic valve 43, liquid separation cylinder 44, suction unit 5, connecting tube 51, electromagnetic valve 52, negative pressure pump 53, pressure sensor 54, conveying unit 6, support plate 61, positioning plate 62, conveying belt 63, conveying shaft 64, clamping unit 7, clamping cylinder 71, clamping plate 72, infrared sensor 73. DETAILED DESCRIPTION

[0047] As shown in Figures 1 to 5 , the portable fire extinguisher liquid filling device of the present application comprises a support frame 1, a liquid storage tank, a power unit, a control unit 2 and a liquid delivery tube, the support frame 1 is fixedly installed with a liquid storage tank on the top, the control unit 2 is fixedly installed on the side of the support frame 1, the power unit is fixed on the ground, and the liquid delivery tube is fixedly connected with the bottom of the liquid storage tank through the support; the bottom end of the liquid delivery tube is fixedly installed with a filling unit 3, and the filling unit 3 is used for filling liquid; wherein:

[0048] The filling unit 3 comprises a sliding tube 31, a sealing cover 32, a micro air pump 33, a micro air pump 34, an air bag 35 and a filling tube 36, the sliding tube 31 is slidingly installed at the bottom of the liquid distribution unit 4, and the sliding tube 31 is used to adjust the filling unit 3 to just fit the fire extinguisher; the sealing cover 32 is fixedly installed on the sliding tube 31, and the sealing cover 32 is used to seal with the fire extinguisher to prevent liquid leakage and external air from entering; the sealing cover 32 is a hollow structure, the micro air pump 33 is fixedly installed on the left side of the sealing cover 32, and the micro air pump 34 is fixedly installed on the right side of the sealing cover 32; the micro air pump 33 and the micro air pump 34 are used to pump air and inflate the air bag 35; two air bags 35 are fixedly installed on the top inner surface of the sealing cover 32, and the two air bags 35 are distributed on both sides of the center line of the sealing cover 32; the two air bags 35 are used to tilt the filling tube, the left air bag 35 is larger than the right air bag 35, and the two air bags 35 completely expand to cover the entire bottle opening of the fire extinguisher; the air bags are respectively and sealingly connected with the micro air pump and the micro air pump; the filling tube 36 is rotatably and sealingly installed on the inner top surface of the sealing cover 32, and the filling tube 36 is distributed between the two air bags 35.

[0049] When the filling unit 3 works, the control unit 2 drives the sliding tube 31 to slide downward through the driving cylinder, and the sliding tube 31 is used to cooperate with the liquid distribution unit 4 to transport the liquid medicine to the filling unit 3; at the same time, the control unit 2 drives the sealing cover 32 to rotate along the axis of the sealing cover 32 through the driving cylinder, and the sealing cover 32 is sealingly connected with the bottle opening of the fire extinguisher through the thread; at this time, the micro air pump 34 starts to inflate, and the two air bags 35 are completely stretched, and the filling tube 36 is tilted due to the different sizes of the two air bags 35, so that the bottom of the filling tube 36 is attached to the inner wall of the cylinder body of the fire extinguisher, and the filling starts; since the liquid medicine in the filling tube 36 contacts the inner wall and flows downward, the generation of air bubbles can be effectively reduced; when the filling is completed, the micro air pump 33 starts to pump air, the two air bags 35 start to shrink, and the filling tube 36 starts to slowly restore the vertical state; at this time, the sealing cover 32 is reversely rotated, the sliding tube 31 is slid upward, and the filling unit 3 is used to cooperate with the clamping unit 7 to release the fire extinguisher, and the filling unit 3 is used to cooperate with the conveying unit 6 to send out the fire extinguisher, and the filling unit 3 starts to fill the next fire extinguisher.

[0050] As shown in Figure 6 As an embodiment of the present application, the support frame 1 is provided with a liquid distribution unit 4, and the liquid distribution unit 4 is used to quantitatively and periodically transmit the liquid medicine in the liquid storage tank to the filling unit 3.

[0051] The liquid distribution unit 4 comprises a T-shaped pipe 41, a first electromagnetic valve 42, a second electromagnetic valve 43 and a liquid distribution cylinder 44. The liquid storage tank is fixedly connected with the T-shaped pipe 41. The T-shaped pipe 41 has two pipes and is symmetrically distributed about the center line of the liquid storage tank. A first electromagnetic valve 42 is fixedly installed on the inner wall of the T-shaped pipe 41 coaxially with the side close to the liquid storage tank. A second electromagnetic valve 43 is fixedly installed on the inner wall of the T-shaped pipe 41 coaxially with the side away from the liquid storage tank. The electromagnetic valve 43 is used for controlling the flow of the liquid medicine. The liquid distribution cylinder 44 is fixedly installed on the left side of the T-shaped pipe 41. The extending arm of the liquid distribution cylinder 44 penetrates through the T-shaped pipe 41 and slides in the T-shaped pipe 41. The liquid distribution cylinder 44 is used for pushing the liquid medicine in the liquid distribution unit out to cooperate with the filling of the next filling unit 3. The first electromagnetic valve 42 is opened at the same time when the second electromagnetic valve 43 is closed.

[0052] When the liquid distribution unit 4 works, the control unit 2 controls the first electromagnetic valve 42 to be opened. The liquid medicine in the liquid storage tank flows into the T-shaped pipe 41 under the action of its own gravity. At the same time, the control unit 2 controls the extending arm of the liquid distribution cylinder 44 to be retracted. At this time, the T-shaped pipe 41 is filled with the liquid medicine. When the lower filling unit 3 is fixedly sealed, the control unit 2 controls the first electromagnetic valve 42 to be closed. At the same time, the control unit 2 controls the second electromagnetic valve 43 to be opened. At the same time, the control unit 2 controls the extending arm of the liquid distribution cylinder 44 to be extended. The extending arm of the liquid distribution cylinder 44 pushes the liquid medicine to flow. The liquid medicine flows into the filling unit 3 through the second electromagnetic valve 43. The filling unit 3 starts to fill.

[0053] As shown in Figure 6 As an embodiment of the present application, the liquid distribution unit 4 is provided with a gas extraction unit 5 between the two pipes. The gas extraction unit 5 is used for extracting the gas in the fire extinguisher.

[0054] The gas extraction unit 5 comprises a connecting pipe 51, an electromagnetic valve 52, a negative pressure pump 53 and a pressure sensor 54. The T-shaped connecting pipe 51 is fixedly connected at the middle of the two T-shaped pipes 41. The electromagnetic valve 52 is installed on the two sides of the T-shaped connecting pipe 51. The electromagnetic valve 52 is used for controlling the flow of the gas in the T-shaped pipe. The extending end of the T-shaped connecting pipe 51 is fixedly connected with the negative pressure pump 53 and the pressure sensor 54. The pressure sensor 54 is located above the negative pressure pump 53. The negative pressure pump 53 is used for extracting the gas in the fire extinguisher to prevent the liquid medicine from contacting with the gas. The pressure sensor 54 is used for detecting the pressure in the fire extinguisher.

[0055] When the air extraction unit 5 is working, the negative pressure pump 53 is started, the control unit 2 controls the electromagnetic valve 52 in the T-shaped pipe to open, and the negative pressure pump 53 starts to extract the gas in the fire extinguisher. At the same time, the pressure sensor 54 starts to detect the pressure in the fire extinguisher. When the pressure is detected to be 0.05 MPa, information is transmitted to the control unit 2, the control unit 2 controls the electromagnetic valve 52 to close, and the negative pressure pump 53 stops extracting air. The air extraction unit is used for liquid filling of the fire extinguisher in cooperation with the filling unit.

[0056] As shown in Figure 7 As an embodiment of the present application, a conveying unit 6 is fixedly installed at the bottom of the support frame 1, and the conveying unit 6 is used to cooperate with the control unit 2 to control the transportation of the fire extinguisher.

[0057] The conveying unit 6 comprises a support plate 61, a positioning plate 62, a conveying belt 63 and a conveying shaft 64. The support plate 61 is fixedly installed on the support frame 1 and is used to support the conveying belt 63. The positioning plate 62 is fixedly installed on the support plate 61 and has two plates which are symmetrical about the conveying belt 63. The positioning plate 62 is used to position the transported fire extinguisher and ensure that the fire extinguisher is conveyed linearly along the conveying belt 63. The conveying belt 63 is installed above the support plate 61 and is located between the two positioning plates 62. The conveying shaft 64 is rotatably installed on both sides of the support plate 61 and is located between the support plate 61 and the conveying belt 63.

[0058] When the conveying unit 6 starts to work, the control unit 2 controls the conveying shaft 64 to rotate through the motor. The conveying shaft 64 drives the conveying belt 63 to rotate. The fire extinguisher on the conveying belt 63 is stopped after rotating to the filling station. After filling is completed, the next fire extinguisher is transported.

[0059] As shown in Figure 8 As an embodiment of the present application, a clamping unit 7 is fixedly installed on the conveying unit 6, and the clamping unit 7 is used to clamp the fire extinguisher.

[0060] The clamping unit 7 comprises a clamping cylinder 71, a clamping plate 72 and an infrared sensor 73. The clamping cylinder 71 is fixedly connected to the extension plate of the positioning plate 62. The clamping cylinder 71 has two groups and is symmetrically distributed on both sides of the conveying belt 63. The clamping function of the fire extinguisher is realized through the relative movement of the two clamping cylinders 71. The clamping plate 72 is fixedly installed on the extension arm of the four clamping cylinders 71. The infrared sensor 73 is fixedly installed on the clamping plate 72 and is used to detect the position of the fire extinguisher.

[0061] When the clamping unit 7 works, the fire extinguisher is first moved to the filling station on the conveying belt 63, and the infrared sensor 73 senses the fire extinguisher and transmits information to the control unit 2, and the control unit 2 controls the extension of the clamping cylinder 71 on both sides of the conveying belt 63, the clamping cylinder 71 drives the clamping plate 72 to move, the clamping plate 72 is provided with a circular arc groove, and the two clamping plates 72 clamp the fire extinguisher through the circular arc groove, and cooperate with the subsequent filling unit 3 to fill.

[0062] As shown in Figure 5 As an embodiment of the present application, a corrugated pipe 37 is fixedly installed between the sealing cover 32 and the filling pipe 36, and the corrugated pipe 37 is made of PE material. The corrugated pipe 37 can make the filling pipe 36 rotate better under the action of the air bag 35, and also increase the service life of the filling pipe 36. When the air bag 35 expands, the corrugated pipe 37 begins to bend under the action of the air bag 35, and the air bag 35 drives the filling pipe 36 to tilt. The PE material has strong plasticity and can better recover when deformed, and is also corrosion-resistant.

[0063] As shown in Figures 3 to 4 As an embodiment of the present application, the fan-shaped nozzle 38 is installed at the bottom of the filling pipe 36. The fan-shaped nozzle 38 can effectively reduce the flow rate of the liquid medicine in the filling pipe. According to the fluid mechanics formula Q=SV, when the liquid medicine flow Q is constant, the flow rate V of the liquid medicine is inversely proportional to the cross-sectional area S of the liquid medicine pipeline. That is, after the fan-shaped nozzle 38 is installed on the filling pipe 36, the cross-sectional area S of the pipeline increases, and the flow rate V of the liquid medicine decreases. Therefore, the fan-shaped nozzle 38 can effectively reduce the flow rate of the liquid medicine in the filling pipe, and the flow rate decreases. After the flow rate decreases, the bubbles in the filling process of the liquid medicine are reduced.

[0064] As shown in Figures 3 to 4 As an embodiment of the present application, the brush 39 is installed around the bottom of the fan-shaped nozzle 38. The brush 39 is made of nylon wire with an antistatic agent. The brush 39 installed at the bottom of the fan-shaped nozzle 38 can effectively reduce the collision intensity of the liquid medicine with the inner wall of the fire extinguisher. The brush 39 is made of nylon wire with an antistatic agent, which has strong corrosion resistance and high flexibility, can be used for a long time, and can also absorb static electricity generated by friction between the liquid medicine and the inner wall of the fire extinguisher.

[0065] As shown in Figures 3 to 4 As an embodiment of the present application, the filling pipe 36 is made of hot-dipped galvanized steel pipe. The hot-dipped galvanized steel pipe has strong corrosion resistance and a long service life, and the plating layer of the hot-dipped galvanized pipe has strong toughness and can withstand mechanical damage to the filling pipe 36 during filling.

[0066] As shown in Figure 1 As shown in the filling method of the present application, the filling method comprises the following steps:

[0067] 1) The fire extinguisher is placed on the conveyor belt 63, which transports the fire extinguisher to the filling station. The infrared sensor 73 detects the filling station, and when it detects a fire extinguisher, the control unit 2 controls the clamping cylinder 71 to push the clamping plate 72 to clamp the fire extinguisher, and at the same time the dispensing unit 4 starts to dispense the liquid medicine and stores it in the dispensing unit 4;

[0068] 2) The sliding pipe 31 in the filling unit 3 slides downward, and at the same time the sealing cover 32 is sealed with the fire extinguisher through threads, and the filling pipe 36 is inserted into the fire extinguisher. At this time, the air pump in the sealing cover 32 starts to inflate, and the air bag 35 is completely inflated to bend the corrugated pipe 37, which drives the filling pipe 36 to bend, and the filling pipe 36 drives the brush 39 to adhere to the inner wall of the fire extinguisher;

[0069] 3) The second electromagnetic valve 43 in the dispensing unit 4 is opened, and the liquid medicine is filled into the fire extinguisher through the filling unit 3. After the filling is completed, the control unit 2 controls the sliding pipe 31 to slide upward through the driving cylinder, and the filled fire extinguisher is transported to the filling station, ready for the filling of the next fire extinguisher.

[0070] When working, the worker opens the switch, and the conveying unit 6 starts to transport the fire extinguisher to the filling station. At this time, the first electromagnetic valve 42 in the dispensing unit 4 is opened, and the liquid medicine flows from the liquid storage tank to the T-shaped pipe 41; the infrared sensor 73 detects the filling station, and when it detects a fire extinguisher, the infrared sensor 73 transmits information to the control unit 2, which controls the clamping cylinder 71 to extend the rod and push the clamping plate 72 to move forward, clamping the fire extinguisher; After the fire extinguisher is clamped in the filling station, the control unit 2 controls the sliding pipe 31 of the filling unit 3 to slide downward through the driving cylinder, and at the same time the sealing cover 32 at the bottom of the sliding pipe 31 starts to rotate and is sealed with the fire extinguisher through threads; After sealing, the micro air pump 34 on the right side of the sealing cover 32 starts to inflate, and when the air bag 35 is completely inflated, it drives the corrugated pipe 37 to bend, which drives the filling pipe 36 to tilt, and the bottom of the filling pipe 36 adheres to the inner wall of the fire extinguisher; At this time, the control unit controls the second electromagnetic valve 43 in the dispensing unit 4 to open, and the liquid medicine flows from the dispensing unit 4 to the filling unit 3; The liquid medicine flows out from the brush 39 at the bottom of the filling pipe 36, and flows along the inner wall of the fire extinguisher into the bottom of the fire extinguisher; When the liquid medicine is filled, the micro air pump 33 on the left side of the sealing cover 32 starts to pump air, and the air bag 35 shrinks to drive the filling rod to be vertical. At this time, the control unit 2 controls the sealing cover 32 to reverse and separate from the fire extinguisher through the driving cylinder, and the telescopic rod slides upward, ready for the filling of the next fire extinguisher.

[0071] The above shows and describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A portable fire extinguisher liquid filling device, comprising a support frame (1), a liquid storage tank, a power unit, a control unit (2) and a liquid delivery pipe, the support frame (1) is fixedly installed with a liquid storage tank above, the support frame (1) is fixedly installed with a control unit (2) on the side, the power unit is fixed on the ground, and the liquid delivery pipe is fixedly connected with the bottom of the liquid storage tank through the support frame (1); characterized in that: The filling unit (3) is fixedly installed on the infusion pipe, and is used for filling medicinal liquid. ​ The filling unit (3) comprises a sliding rod (31), a sealing cover (32), a micro air pump (33), a micro air pump (34), an air bag (35) and a filling pipe (36). The sliding rod (31) is slidingly installed at the bottom of the liquid distribution unit (4). The sealing cover (32) is fixedly installed on the sliding rod (31). The sealing cover (32) is a hollow structure. The micro air pump (33) is fixedly installed on the left side of the sealing cover (32). The micro air pump (34) is installed on the right side of the sealing cover (32). Two air bags (35) are fixedly installed on the top inner surface of the sealing cover (32). The two air bags (35) are distributed on the two sides of the center line of the sealing cover (32). The two air bags (35) are respectively and sealingly connected with the micro air pump and the micro air pump. The filling pipe (36) is fixedly installed on the inner top surface of the sealing cover (32). The filling pipe (36) is distributed between the two air bags (35). The support frame (1) is provided with the liquid distribution unit (4). The liquid distribution unit (4) is used for quantitatively and periodically transmitting the medicinal liquid in the liquid storage tank to the filling unit (3). The liquid distribution unit (4) comprises a T-shaped pipe (41), a first electromagnetic valve (42), a second electromagnetic valve (43) and a liquid distribution cylinder (44). The liquid storage tank is fixedly connected with the T-shaped pipe (41). The T-shaped pipe (41) has two pipes and is symmetrically distributed about the center line of the liquid storage tank. The first electromagnetic valve (42) is fixedly installed on the inner wall of the T-shaped pipe (41) and is coaxially arranged on the side close to the liquid storage tank. The second electromagnetic valve (43) is fixedly installed on the inner wall of the T-shaped pipe (41) and is coaxially arranged on the side away from the liquid storage tank. The liquid distribution cylinder (44) is fixedly installed on the left side of the T-shaped pipe (41). The liquid distribution cylinder (44) extends through the T-shaped pipe (41) and slides in the T-shaped pipe (41). The first electromagnetic valve (42) is opened at the same time when the second electromagnetic valve (43) is closed. The air extraction unit (5) is installed between the two pipes of the liquid distribution unit (4). The air extraction unit (5) is used for extracting the gas in the fire extinguisher. The air extraction unit (5) comprises a T-shaped connecting pipe (51), an electromagnetic valve (52), a negative pressure pump (53) and a pressure sensor (54). The two ends of the T-shaped connecting pipe (51) are fixedly connected between the two T-shaped pipes (41). The electromagnetic valves (52) are respectively installed on the two sides of the T-shaped connecting pipe (51). The negative pressure pump (53) and the pressure sensor (54) are fixedly connected to the extended end of the T-shaped connecting pipe (51). The pressure sensor (54) is located above the negative pressure pump (53). The support frame (1) is fixedly provided with the conveying unit (6). The conveying unit (6) is used for cooperating with the control unit (2) to control the transportation of the fire extinguisher. The conveying unit (6) comprises a support plate (61), a positioning plate (62), a conveying belt (63) and a conveying shaft (64), the support plate (61) is fixedly installed on the support frame (1), the positioning plate (62) is fixedly installed on the support plate (61), and the two positioning plates (62) are symmetrically arranged about the conveying belt (63); the conveying belt (63) is installed above the support plate (61) and located between the two positioning plates (62); the conveying shaft (64) is rotatably installed on the two sides of the support plate (61) and located between the support plate (61) and the conveying belt (63); The sealing cover (32) and the filling pipe (36) are fixedly installed with a corrugated pipe (37); The bottom of the filling pipe (36) is provided with a fan-shaped nozzle (38); The bottom of the fan-shaped nozzle (38) is provided with a brush (39).

2. The portable fire extinguisher liquid filling device according to claim 1, characterized in that: The conveying unit (6) is fixedly installed with a clamping unit (7), and the clamping unit (7) is used for clamping the fire extinguisher; The clamping unit (7) comprises clamping cylinders (71), clamping plates (72) and infrared sensors (73), the clamping cylinders (71) are fixedly connected to the extension plates of the positioning plates (62) of the conveying unit (6), and the two clamping cylinders (71) are symmetrically arranged on the two sides of the conveying belt (63); the extension arms of the four clamping cylinders (71) are fixedly installed with the clamping plates (72), and the clamping plates (72) are fixedly installed with the infrared sensors (73).

3. The portable fire extinguisher liquid filling device according to claim 1, wherein: The corrugated pipe (37) is made of PE material.

4. The portable fire extinguisher liquid filling device according to claim 1, wherein: The brush (39) is made of nylon wire with an antistatic agent.

5. The portable fire extinguisher liquid filling device according to claim 1, wherein: The filling pipe (36) is made of a hot-dip galvanized steel pipe.

6. A method of filling a fire extinguisher with a fire extinguisher liquid, characterized in that: The method comprises the following steps: 1) the fire extinguisher is placed on the conveying belt (63), the conveying belt (63) conveys the fire extinguisher to the filling station, the infrared sensor (73) detects the filling station, when the fire extinguisher is detected, the control unit (2) controls the clamping cylinder (71) to push the clamping plate (72) to clamp the fire extinguisher, and the liquid distribution unit (4) starts to distribute liquid and stores the liquid in the liquid distribution unit (4); 2) the sliding rod (31) in the filling unit (3) slides downward, the sealing cover (32) is screwed with the fire extinguisher, the filling pipe (36) is inserted into the fire extinguisher, at this time, the micro air pump (34) in the sealing cover (32) starts to inflate, the air bag (35) is completely inflated to bend the corrugated pipe (37), the corrugated pipe (37) bends the filling pipe (36), and the filling pipe (36) makes the brush (39) adhere to the inner wall of the fire extinguisher; 3) the second electromagnetic valve (43) in the liquid distribution unit (4) is opened, the liquid is filled into the fire extinguisher through the filling unit (3), after the filling is completed, the control unit (2) controls the sliding rod (31) to slide upward through the driving motor, the filled fire extinguisher is conveyed to the filling station, and the filling of the next fire extinguisher is prepared.

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