Filling device

Abstract

The utility model relates to the technical field of filling machines, and provides a filling device which comprises a sealing cover used for being detachably connected to a bottle opening of a tank body; the extraction mechanism is connected to the sealing cover, the first end is communicated with an external pipeline, and the second end penetrates through the sealing cover and extends to the bottom of the tank body; and the pressurizing mechanism is connected to the sealing cover, penetrates through the sealing cover, is communicated with the tank body and is used for injecting air into the tank body, so that a medium loaded in the tank body is extracted to an external pipeline by the extracting mechanism. According to the filling device provided by the utility model, the sealing cover is directly and detachably connected with the bottle opening of the tank body, so that the sealing performance in the whole filling process is ensured, and the leakage of a medium is effectively prevented. And the extraction mechanism directly extends to the bottom of the tank body, so that the medium can be thoroughly extracted, and residues and waste are avoided. And meanwhile, the pressurizing mechanism injects air into the tank body, power needed for extracting the medium is provided, and the injection process is smoother and more efficient.

Description

Technical Field

[0001] The utility model relates to the technical field of filling machines, in particular to a filling device. Background Art

[0002] The addition and transfer of hydrogen peroxide is a common process in daily factory operations. Traditionally, filling machines are equipped with a stainless steel barrel designed for a specific filling device size. However, in practice, factories prefer to use blue plastic barrels for hydrogen peroxide transfer due to factors such as cost, portability, and ease of use.

[0003] Specifically, factories typically use the following process for transferring and filling hydrogen peroxide: First, pour the hydrogen peroxide from a blue plastic bucket into a stainless steel bucket; then, place the stainless steel bucket in a designated filling position; then, install a filling cap designed specifically for the stainless steel bucket, and connect the cap to the filling device for filling. While this method can complete the task of filling hydrogen peroxide, it is cumbersome and inefficient because it requires the additional step of emptying the bucket. To simplify the process, factories have also tried directly using blue plastic buckets for filling. However, because the plastic caps of blue plastic buckets do not have a structure that directly connects to the filling device, factories typically need to drill holes in the plastic caps and then insert a filling line for filling. While this method simplifies the emptying process, the drilling process damages the plastic caps, affecting their sealing properties and increasing the risk of hydrogen peroxide leaks. Utility Model Content

[0004] The utility model provides a filling device, which is used to solve the problems of complicated filling operation and low efficiency of existing factory filling machines.

[0005] The utility model provides a filling device, comprising:

[0006] A sealing cap, adapted to be detachably connected to the bottle opening of the can body;

[0007] an extraction mechanism connected to the sealing cover, with a first end communicating with an external pipeline and a second end passing through the sealing cover and extending to the bottom of the tank body;

[0008] The pressurizing mechanism is connected to the sealing cover and communicates with the tank body through the sealing cover, and is used to inject air into the tank body so that the medium loaded in the tank body is extracted to the external pipeline by the extraction mechanism.

[0009] According to a filling device provided by the present utility model, the extraction mechanism includes:

[0010] a first one-way valve, configured to conduct one-way flow toward the external pipeline;

[0011] A liquid outlet pipe has a first end connected to the first one-way valve and a second end passing through the sealing cover and extending to the bottom of the tank body.

[0012] According to a filling device provided by the present utility model, the extraction mechanism further includes:

[0013] a first connector connected between the outlet of the first one-way valve and the external pipeline;

[0014] The second connector is connected between the inlet of the first one-way valve and the liquid outlet pipe.

[0015] According to a filling device provided by the present invention, the extraction mechanism further includes:

[0016] A filter is connected to the second end of the liquid outlet pipe.

[0017] According to a filling device provided by the present invention, the pressurizing mechanism includes:

[0018] A regulating valve is connected to the air injection structure to adjust the flow rate of the inflowing air;

[0019] The second one-way valve has a first end connected to the regulating valve and a second end connected to the tank body, and is used for one-way conduction toward the tank body.

[0020] According to a filling device provided by the present invention, the pressurizing mechanism further includes:

[0021] A connecting pipe and a third joint, the regulating valve is connected to the first end of the second one-way valve through the connecting pipe and the third joint in sequence.

[0022] According to a filling device provided by the present invention, the pressurizing mechanism further includes:

[0023] A fourth joint and an air inlet pipe, the second end of the second one-way valve is connected to the tank body through the fourth joint and the air inlet pipe in sequence.

[0024] According to a filling device provided by the present invention, the filling device further includes:

[0025] a safety valve connected to the sealing cover and in communication with the tank body;

[0026] When the pressure of the tank body is less than or equal to the preset pressure, the safety valve is closed; when the pressure of the tank body is greater than the preset pressure, the safety valve connects the tank body to the outside air.

[0027] According to a filling device provided by the utility model, the sealing cover includes:

[0028] The cover plate body is formed with a mounting cavity, wherein a thread adapted to the tank opening of the tank body is formed in the mounting cavity;

[0029] A sealing pressure plate is connected in the installation cavity, and is provided with a first through hole for the extraction mechanism to pass through, a second through hole for the pressurizing mechanism to pass through, and a third through hole for the safety valve to pass through.

[0030] According to a filling device provided by the utility model, the sealing cover further includes:

[0031] a first sealing gasket, disposed in the mounting cavity and located between the cover body and the sealing pressure plate;

[0032] The second sealing gasket is arranged in the installation cavity and located between the cover plate body and the tank body.

[0033] The filling device provided by the utility model ensures sealing throughout the entire filling process through a detachable connection design between the sealing cap and the bottle mouth of the tank body (blue plastic barrel), effectively preventing leakage of the medium (such as hydrogen peroxide), thereby maximizing the life safety and physical health of the operator and achieving zero-risk operation. The device is equipped with an extraction mechanism and a pressurizing mechanism, which work together to efficiently extract the medium from the tank body and transport it to the external pipeline. The extraction mechanism extends directly to the bottom of the tank body, ensuring that the medium is completely extracted, avoiding residue and waste. At the same time, the pressurizing mechanism provides the power required to extract the medium by injecting air into the tank body, making the filling process smoother and more efficient. Due to the high efficiency of the filling device, it greatly reduces the time required for the filling process, thereby eliminating the time waste and efficiency bottlenecks caused by low filling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 It is a schematic diagram of the filling device provided by the utility model.

[0036] Figure 2 It is a schematic diagram of the filling device provided by the utility model.

[0037] Figure 3 yes Figure 2 Schematic diagram of the cross section at AA in the middle.

[0038] Figure 4 yes Figure 3 A magnified schematic diagram of the middle part of the structure.

[0039] Reference numerals:

[0040] 100. Sealing cover; 101. Cover plate body; 102. Sealing pressure plate; 103. First sealing gasket; 104. Second sealing gasket; 105. Thread; 200. Extraction mechanism; 201. First one-way valve; 202. Liquid outlet pipe; 203. First connector; 204. Second connector; 205. Filter; 300. Pressurizing mechanism; 301. Regulating valve; 302. Second one-way valve; 303. Connecting pipe; 304. Third connector; 305. Fourth connector; 306. Air inlet pipe; 400. Safety valve. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] The following combination Figure 1-Figure 4 Description: The filling device provided by the utility model is used for adding hydrogen peroxide to a filling machine. It can be directly assembled on the bottle mouth of a tank (blue plastic barrel), which simplifies the operation process and solves the problem of adding hydrogen peroxide to a factory filling machine.

[0043] In one embodiment provided in this application, Figure 1 As shown, the filling device includes: a sealing cap 100, an extraction mechanism 200, and a pressurizing mechanism 300. The sealing cap 100 is used to be detachably connected to the bottle mouth of the can body; the extraction mechanism 200 is connected to the sealing cap 100, with a first end communicating with an external pipeline and a second end extending through the sealing cap 100 to the bottom of the can body; the pressurizing mechanism 300 is connected to the sealing cap 100, passing through the sealing cap 100 and communicating with the can body, and is used to inject air into the can body so that the medium loaded in the can body is extracted by the extraction mechanism 200 into the external pipeline.

[0044] In this embodiment, the sealing cap 100 is made of stainless steel. A special sealing structure is used between the sealing cap 100 and the bottle mouth of the tank body to ensure that the hydrogen peroxide will not leak during the filling process, effectively preventing the risk of external contamination of the medium. The sealing cap 100 adopts a quick-install connection method, and the installation and removal process with the bottle mouth of the tank body is simple and fast, which greatly improves work efficiency. At the same time, the quick-install design also facilitates maintenance and replacement of the equipment. The choice of stainless steel gives the sealing cap 100 excellent corrosion resistance and high temperature resistance, enabling it to operate stably for a long time in various harsh environments, meeting the needs of use in demanding occasions.

[0045] The extraction mechanism 200 is connected to the sealing cap 100. Its first end is connected to an external pipeline, and its second end extends through the sealing cap 100 to the bottom of the tank. This design ensures that the hydrogen peroxide and other media are fully extracted, avoiding residue and waste. During the filling process, the extraction mechanism 200 is connected to external equipment via external pipelines to achieve the delivery and filling of the media.

[0046] The pressurizing mechanism 300 is also connected to the sealing cap 100 and communicates with the tank body through the sealing cap 100. Its main function is to inject air into the tank body during the filling process to increase the pressure inside the tank body, so that the medium such as hydrogen peroxide can be smoothly extracted by the extraction mechanism 200 and transported to the external pipeline.

[0047] The filling device provided in this embodiment of the utility model features a removable sealing cap 100 that connects directly to the mouth of the can (a blue plastic barrel), ensuring a tight seal throughout the entire filling process and effectively preventing leakage of the medium (such as hydrogen peroxide). This maximizes the safety and health of the operator and achieves a risk-free operation. The device is equipped with an extraction mechanism 200 and a pressurizing mechanism 300, which work together to efficiently extract the medium from the can and deliver it to an external pipeline. The extraction mechanism 200 extends directly to the bottom of the can, ensuring complete extraction of the medium and avoiding residual material and waste. Simultaneously, the pressurizing mechanism 300 injects air into the can, providing the necessary power for extraction, making the filling process smoother and more efficient, significantly improving factory production efficiency. Due to the efficiency of this filling device, it significantly reduces the time required for the filling process, eliminating the time wasted and efficiency bottlenecks caused by inefficient filling.

[0048] In some embodiments, as Figure 1 As shown, the extraction mechanism 200 includes a first one-way valve 201 and a liquid outlet pipe 202. The first one-way valve 201 is used to provide one-way flow to the external pipeline. The first end of the liquid outlet pipe 202 is connected to the first one-way valve 201, and the second end passes through the sealing cap 100 and extends to the bottom of the tank.

[0049] Specifically, the liquid outlet pipe 202, as an important component of the extraction mechanism 200, has the primary function of efficiently and stably delivering the hydrogen peroxide from the tank body. The second end of the liquid outlet pipe 202 passes through the sealing cap 100 and extends to the bottom of the tank body. This design ensures that the hydrogen peroxide can be fully extracted, avoids residue and waste, and improves filling efficiency. The liquid outlet pipe 202 is made of high-quality, corrosion-resistant and wear-resistant materials to ensure that it will not leak or degrade due to medium corrosion or wear during long-term use. The primary function of the first one-way valve 201 is to strictly control the outflow direction of the liquid and ensure the stability and reliability of the liquid discharge process. The first one-way valve 201 only allows the liquid to pass in one direction, that is, it can only be conducted in the direction of the external pipeline. This design effectively prevents the backflow of hydrogen peroxide during the filling process, avoiding pollution and efficiency loss caused by backflow.

[0050] In some embodiments, as Figure 1 As shown, the extraction mechanism 200 further includes a first connector 203 and a second connector 204. The first connector 203 is connected between the outlet of the first one-way valve 201 and the external pipeline; the second connector 204 is connected between the inlet of the first one-way valve 201 and the liquid outlet pipe 202.

[0051] Specifically, the main function of the first connector 203 is to achieve rapid connection and separation between the filling device and the external pipeline. This design not only provides strong support for the efficient operation of the filling device, but also greatly simplifies the maintenance process of the equipment. Specifically: The first connector 203 adopts a standardized design, which can easily achieve a quick and stable connection with the external pipeline. This greatly shortens the preparation time before filling and improves work efficiency. When the filling device needs to be maintained or repaired, the first connector 203 can be easily separated from the external pipeline. This avoids the tedious disassembly steps in the traditional connection method, making maintenance work easier and faster.

[0052] The main function of the second connector 204 is to quickly construct a liquid outlet passage and ensure the stable flow of hydrogen peroxide during the filling process. At the same time, the second connector 204 also facilitates maintenance and overhaul of the equipment. Specifically, the second connector 204 connects the liquid outlet pipe 202 to the inlet of the first one-way valve 201 through a tight connection. This ensures that hydrogen peroxide can smoothly enter the first one-way valve 201 through the liquid outlet pipe 202 during the filling process and is ultimately transported to the external pipeline. When maintenance of the liquid outlet pipe 202 or the first one-way valve 201 is required, the second connector 204 can be easily disassembled. This avoids the risk of leakage that may occur in traditional connection methods and ensures the safety and stability of the equipment.

[0053] In some embodiments, as Figure 1As shown, extraction mechanism 200 also includes a filter 205 connected to the second end of liquid outlet pipe 202. Specifically, filter 205 is located at the end of liquid outlet pipe 202 extending to the bottom of the tank. Its primary function is to filter out impurity particles in the hydrogen peroxide, ensuring its purity and quality. Filter 205 utilizes a precision filter medium that effectively captures and removes tiny impurity particles from the hydrogen peroxide. This prevents impurity particles from entering subsequent equipment or processes, thereby preventing equipment failure or product quality issues caused by impurities. The filtering action of filter 205 significantly improves the purity of the hydrogen peroxide. This ensures the stability of the hydrogen peroxide quality during the filling process, providing reliable support for subsequent processing. Furthermore, filter 205 effectively reduces wear and corrosion on subsequent equipment caused by impurities in the hydrogen peroxide. This extends the service life of the equipment, reduces maintenance costs, and improves overall production efficiency.

[0054] In some embodiments, as Figure 1 As shown, the pressurizing mechanism 300 includes a regulating valve 301 and a second one-way valve 302. The regulating valve 301 is connected to the air injection structure to adjust the flow of air. The second one-way valve 302 is connected to the regulating valve 301 at its first end and to the tank at its second end for unidirectional flow toward the tank.

[0055] Specifically, the main function of regulating valve 301 is to precisely control the intake flow rate of compressed air. Through precise regulation of regulating valve 301, the generated pressure can be ensured to be stable and meet the liquid discharge requirements, thereby avoiding pressure instability caused by excessive or insufficient intake flow, which in turn affects the liquid discharge effect. Regulating valve 301 also has the ability to flexibly adjust the compressed air flow rate to adapt to the liquid discharge speed and flow requirements under different operating conditions. By adjusting the opening of regulating valve 301, the intake flow rate of compressed air can be conveniently changed, thereby adjusting the pressure difference within the tank and achieving precise control of the hydrogen peroxide discharge rate.

[0056] The main function of the second one-way valve 302 is to control the one-way flow of compressed air. By only allowing compressed air to pass through in a specific direction, the second one-way valve 302 can effectively prevent the reverse flow of compressed air, thereby ensuring the stability and reliability of the pressurization process. Specifically, the second one-way valve 302 adopts a special valve core design to ensure that compressed air can only pass through in one direction. This avoids the reverse flow of compressed air during the pressurization process, thereby ensuring the stability and controllability of the pressure in the tank. The one-way conduction function of the second one-way valve 302 also helps to improve the safety of the entire device. In abnormal circumstances, such as when the compressed air supply is interrupted or the pressure in the tank increases abnormally, the second one-way valve 302 can quickly cut off the flow path of the compressed air to prevent accidents.

[0057] In some embodiments, as Figure 1 As shown, the pressurizing mechanism 300 further includes: a connecting pipe 303 and a third connector 304 , and the regulating valve 301 is connected to the first end of the second one-way valve 302 through the connecting pipe 303 and the third connector 304 in sequence.

[0058] In this embodiment, the connecting pipe 303 is made of high-quality materials and advanced manufacturing processes, ensuring a secure and reliable connection between it, the regulating valve 301, and the second check valve 302. This prevents pressure instability caused by loose or broken connections during the pressurization process, thereby ensuring smooth hydrogen peroxide filling. The connecting pipe 303 is designed to be flexible and can be bent and extended according to actual installation requirements to accommodate layout requirements under different operating conditions. This improves the adaptability and flexibility of the pressurization mechanism 300, making the entire filling device easier to install and debug. The third connector 304's primary function is to quickly connect to the compressed air line, facilitating installation and removal and improving work efficiency. Specifically, the third connector 304 utilizes a standard quick-connect interface design, allowing the compressed air line to be easily and quickly connected to the pressurization mechanism 300. This not only simplifies the installation process, but also reduces installation costs and improves work efficiency. The quick-connect design of the third connector 304 also makes it easier to remove and replace the compressed air line. When the compressed air pipeline needs to be maintained or replaced, the corresponding operation can be completed by simply disconnecting the third connector 304. This reduces the maintenance difficulty and cost and improves the reliability and service life of the entire filling device.

[0059] At the same time, if Figure 1 As shown, the pressurizing mechanism 300 further includes: a fourth connector 305 and an air inlet pipe 306 , and the second end of the second one-way valve 302 is connected to the tank body through the fourth connector 305 and the air inlet pipe 306 in sequence.

[0060] In this embodiment, the fourth connector 305 primarily connects the second one-way valve 302 and the air inlet pipe 306. It is located on the sealing cover 100 and utilizes a standard quick-connect design, making connection to the sealing cover 100 quick and easy. This not only simplifies installation and reduces costs, but also improves work efficiency. The air inlet pipe 306 primarily delivers compressed air to the tank (hydrogen peroxide tank) to pressurize and smoothly discharge the hydrogen peroxide. Specifically, the air inlet pipe 306 is constructed of high-quality materials and utilizes advanced manufacturing processes to ensure efficient and stable delivery of compressed air. This prevents pressure instability caused by leaks or blockages during the pressurization process, thereby ensuring smooth hydrogen peroxide filling. The air inlet pipe 306 offers a degree of flexibility, allowing it to be bent and extended according to actual installation requirements to accommodate layout requirements under varying operating conditions. This enhances the adaptability and flexibility of the pressurizing mechanism 300, making the entire filling device easier to install and debug.

[0061] Based on the above embodiments, in some embodiments, such as Figure 1 As shown, the filling device also includes: a safety valve 400, which is connected to the sealing cover 100 and communicates with the tank body; when the pressure of the tank body is less than or equal to the preset pressure, the safety valve 400 is closed; when the pressure of the tank body is greater than the preset pressure, the safety valve 400 connects the tank body to the outside air.

[0062] In this embodiment, the primary function of safety valve 400 is to ensure that the tank (hydrogen peroxide tank) operates within a preset safety pressure range. When the tank pressure is equal to or less than the preset pressure, safety valve 400 remains closed, preventing hydrogen peroxide leakage or air from entering the tank. However, when the tank pressure exceeds the preset pressure, safety valve 400 automatically opens, allowing the tank to be exposed to air, thereby releasing excess pressure and preventing the hydrogen peroxide tank from exploding or being damaged due to excessive pressure.

[0063] Safety valve 400 monitors tank pressure changes in real time and automatically opens to release excess pressure when pressure exceeds a set safety threshold. This prevents equipment damage or casualties caused by excessive pressure, ensuring the safety of the filling process. Safety valve 400 responds promptly to abnormal pressure fluctuations. This ensures that if the air injection mechanism malfunctions or other abnormal conditions occur, safety valve 400 can open quickly to protect the entire hydrogen peroxide filling system.

[0064] In some embodiments, as Figures 1 to 4As shown, the sealing cover 100 includes a cover body 101 and a sealing pressure plate 102. The cover body 101 is formed with a mounting cavity, and the mounting cavity is formed with a thread 105 adapted to the tank opening of the tank body. The sealing pressure plate 102 is connected to the mounting cavity and is provided with a first through-hole for the extraction mechanism 200 to pass through, a second through-hole for the pressurizing mechanism 300 to pass through, and a third through-hole for the safety valve 400 to pass through.

[0065] In this embodiment, the cover body 101 forms a mounting cavity adapted to fit within the can mouth. This mounting cavity is provided with threads 105 that match the threads on the can mouth. This design ensures a tight connection between the sealing cover 100 and the can body, preventing hydrogen peroxide leakage. The sealing pressure plate 102 is connected within the mounting cavity and fits tightly against the cover body 101. The sealing pressure plate 102 is provided with a first through-hole for the liquid outlet pipe 202 on the extraction mechanism 200, a second through-hole for the air inlet pipe 306 on the pressurizing mechanism 300, and a third through-hole for the safety valve 400. The design of these through-holes not only meets the connection requirements of the various components but also ensures a tight seal. By tightly fitting with the cover body 101, the sealing pressure plate 102 effectively prevents other components (such as the extraction mechanism 200, pressurizing mechanism 300, and safety valve 400) from rotating due to the force of tightening, thereby maintaining its original position. This design improves the stability and durability of the equipment and avoids leakage or failure caused by loose components.

[0066] In some embodiments, as Figures 1 to 4 As shown, the sealing cover 100 further includes a first sealing gasket 103 and a second sealing gasket 104. The first sealing gasket 103 is disposed in the installation cavity between the cover body 101 and the sealing pressure plate 102; the second sealing gasket 104 is disposed in the installation cavity between the cover body 101 and the can body.

[0067] In this embodiment, the first sealing gasket 103 is arranged in the installation cavity to ensure a tight fit between the cover body 101 and the sealing pressure plate 102, thereby preventing leakage of hydrogen peroxide or other media. The introduction of the first sealing gasket 103 further enhances the sealing performance of the sealing cover 100. The second sealing gasket 104 is used to ensure a tight fit between the cover body 101 and the tank body, and also prevent leakage of hydrogen peroxide or other media. The introduction of the second sealing gasket 104 improves the sealing effect between the sealing cover 100 and the tank body. At the same time, the design of the thread 105 in the installation cavity can generate a certain extrusion force during the tightening process, so that the first sealing gasket 103 and the second sealing gasket 104 can better play a sealing role and improve the sealing effect. It is easy to install and disassemble. The threaded connection method is simple to operate, convenient for opening and closing the tank body, and conducive to reuse and maintenance.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A filling device, characterized in that: include: A sealing cap (100) is used for being detachably connected to the bottle mouth of the can body; an extraction mechanism (200) connected to the sealing cover (100), with a first end communicating with an external pipeline and a second end passing through the sealing cover (100) and extending to the bottom of the tank body; The pressurizing mechanism (300) is connected to the sealing cover (100), passes through the sealing cover (100) and communicates with the tank body, and is used to inject air into the tank body so that the medium loaded in the tank body is extracted to the external pipeline by the extraction mechanism (200).

2. The filling device according to claim 1, characterized in that The extraction mechanism (200) comprises: a first one-way valve (201), configured to conduct one-way flow toward the external pipeline; A liquid outlet pipe (202) has a first end connected to the first one-way valve (201) and a second end passing through the sealing cover (100) and extending to the bottom of the tank body.

3. The filling device according to claim 2, characterized in that: The extraction mechanism (200) further comprises: a first connector (203) connected between the outlet of the first one-way valve (201) and the external pipeline; The second connector (204) is connected between the inlet of the first one-way valve (201) and the liquid outlet pipe (202).

4. The filling device according to claim 2, characterized in that The extraction mechanism (200) further comprises: The filter (205) is connected to the second end of the liquid outlet pipe (202).

5. The filling device according to claim 1, characterized in that: The pressurizing mechanism (300) comprises: A regulating valve (301) is connected to the air injection structure to regulate the flow rate of the inflowing air; The second one-way valve (302) has a first end in communication with the regulating valve (301) and a second end in communication with the tank body, and is used for one-way conduction toward the tank body.

6. The filling device according to claim 5, characterized in that The pressurizing mechanism (300) further includes: The connecting pipe (303) and the third joint (304) are connected, and the regulating valve (301) is connected to the first end of the second one-way valve (302) through the connecting pipe (303) and the third joint (304) in sequence.

7. The filling device according to claim 5, characterized in that The pressurizing mechanism (300) further includes: A fourth connector (305) and an air inlet pipe (306), wherein the second end of the second one-way valve (302) is connected to the tank body through the fourth connector (305) and the air inlet pipe (306) in sequence.

8. The filling device according to any one of claims 1 to 7, characterized in that: The filling device also includes: a safety valve (400), connected to the sealing cover (100) and in communication with the tank body; When the pressure of the tank body is less than or equal to the preset pressure, the safety valve (400) is closed; when the pressure of the tank body is greater than the preset pressure, the safety valve (400) connects the tank body to the outside air.

9. The filling device according to claim 8, characterized in that The sealing cover (100) comprises: The cover plate body (101) is formed with a mounting cavity, wherein a thread (105) adapted to the tank opening of the tank body is formed in the mounting cavity; A sealing pressure plate (102) is connected in the installation cavity, and the sealing pressure plate (102) is provided with a first through hole for the extraction mechanism (200) to pass through, a second through hole for the pressurizing mechanism (300) to pass through, and a third through hole for the safety valve (400) to pass through.

10. The filling device according to claim 9, characterized in that The sealing cover (100) further includes: A first sealing gasket (103) is arranged in the installation cavity and located between the cover plate body (101) and the sealing pressure plate (102); A second sealing gasket (104) is arranged in the installation cavity and located between the cover plate body (101) and the tank body.

Images