An inflator device that can automatically relieve pressure

Abstract

The application relates to the technical field of inflators, and discloses an automatic pressure relief inflator device, which comprises an inflator body, an air cylinder and a base, the inflator body and the air cylinder are fixedly connected to the top outer wall of the base, the inflator body is communicated with the air cylinder, the outer wall of the air cylinder is provided with an inflation pipe, one end of the inflation pipe away from the air cylinder is provided with an inflation nozzle, a second one-way valve is arranged between the inflation nozzle and the end of the inflation pipe, the outer wall of the air cylinder is provided with a self-pressure relief mechanism, the self-pressure relief mechanism comprises an air pressure scale disc, a pressure sensor and an electric pressure relief valve, in the utility model, the self-pressure relief mechanism can effectively avoid the risk that an inflated object is damaged due to excessive inflation, for example, preventing a tire from being punctured due to excessively high air pressure, and prolonging the service life of the inflated object.

Description

Technical Field

[0001] This application relates to the field of air pump technology, and in particular to an air pump device with automatic pressure relief. Background Technology

[0002] Air pumps are common tools in daily life, used to inflate various inflatable devices such as bicycles and basketballs. However, existing air pumps have some shortcomings in use. When inflating objects, it is easy to over-inflate due to the inability to accurately control the amount of air. This can not only damage the inflated object, such as a tire blowout, but also affect its normal performance. Although some air pumps on the market are equipped with pressure gauges to help judge the inflation amount, it is still necessary to manually monitor the pressure gauge reading and manually stop the pumping operation, which is not convenient and poses a certain risk of misjudgment. Therefore, an air pump device with automatic depressurization is proposed to solve the above problems. Utility Model Content

[0003] The purpose of this invention is to provide an air pump device with automatic pressure relief, so as to solve the problems mentioned in the background art of existing air pumps being prone to over-inflation and not convenient to operate.

[0004] The automatic pressure relief air pump device provided in this application adopts the following technical solution:

[0005] An air pump device with automatic pressure relief includes an air pump body, an air storage cylinder, and a base. The air pump body and the air storage cylinder are both fixedly connected to the top outer wall of the base. The air pump body is connected to the air storage cylinder. An inflation tube is installed on the outer wall of the air storage cylinder. An inflation nozzle is installed at the end of the inflation tube away from the air storage cylinder. A second one-way valve is installed between the inflation nozzle and the end of the inflation tube.

[0006] The outer wall of the gas storage cylinder is equipped with a self-pressure relief mechanism, which includes a pressure dial, a pressure sensor, and an electric pressure relief valve. The pressure dial is installed on the top outer wall of the gas storage cylinder, and its bottom end extends into the interior of the gas storage cylinder. The pressure sensor is installed on the inner wall of the gas storage cylinder, and the electric pressure relief valve is installed on the outer wall of the gas storage cylinder. The pressure sensor and the electric pressure relief valve are arranged opposite to each other.

[0007] Preferably, the bottom outer wall of the base is provided with a first one-way valve, which is connected to the air storage cylinder and is used to allow air to enter the air storage cylinder, while the second one-way valve is used to allow air to exit.

[0008] Preferably, a piston rod is movably connected to the inner wall of the air pump body, a piston is installed at the bottom end of the piston rod, and the outer edge of the piston is in contact with the inner wall of the air pump body.

[0009] Preferably, the top end of the piston rod passes through the air pump body and is fixedly connected to a handle, and a spring is sleeved on the outer wall of the piston rod, the spring being located between the top of the air pump body and the bottom of the handle.

[0010] In summary, this application includes the following beneficial technical effects:

[0011] 1. The self-depressurization mechanism effectively avoids the risk of damage to the inflated object due to over-inflation, such as preventing tires from bursting due to excessive air pressure and extending the service life of the inflated object.

[0012] 2. No need for manual monitoring of the pressure gauge reading and manual stopping of the pumping operation. Users only need to set the desired pressure value, and the air pump can automatically complete the inflation and depressurization process, making the operation more convenient and efficient. Attached Figure Description

[0013] Figure 1 This is an overall schematic diagram of an embodiment of the application;

[0014] Figure 2 This is a partial cross-sectional view of an embodiment of the application;

[0015] Figure 3 This is a partial structural cross-sectional view of an embodiment of the application.

[0016] Explanation of reference numerals in the attached drawings: 1. Air pump body; 2. Air reservoir; 3. Base; 4. Piston rod; 5. Piston; 6. Handle; 7. Pressure dial; 8. Pressure sensor; 9. Electric pressure relief valve; 10. First check valve; 11. Inflation hose; 12. Inflation nozzle; 13. Second check valve; 14. Spring. Detailed Implementation

[0017] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0018] This application discloses an air pump device with automatic pressure relief. (Refer to...) Figure 1-3 An air pump device with automatic pressure relief includes an air pump body 1, an air storage cylinder 2 and a base 3. The air pump body 1 and the air storage cylinder 2 are both fixedly connected to the top outer wall of the base 3. The air pump body 1 and the air storage cylinder 2 are connected. An inflation pipe 11 is installed on the outer wall of the air storage cylinder 2. An inflation nozzle 12 is installed at the end of the inflation pipe 11 away from the air storage cylinder 2. A second one-way valve 13 is installed between the inflation nozzle 12 and the end of the inflation pipe 11.

[0019] The outer wall of the air storage cylinder 2 is equipped with a self-pressure relief mechanism, which includes a pressure dial 7, a pressure sensor 8, and an electric pressure relief valve 9. The pressure dial 7 is installed on the top outer wall of the air storage cylinder 2, and its bottom end extends into the interior of the air storage cylinder 2. The pressure sensor 8 is installed on the inner wall of the air storage cylinder 2, and the electric pressure relief valve 9 is installed on the outer wall of the air storage cylinder 2. The pressure sensor 8 and the electric pressure relief valve 9 are arranged opposite to each other. The pressure dial 7 is electrically connected to the pressure sensor 8, and the pressure sensor 8 is electrically connected to the electric pressure relief valve 9.

[0020] The pressure dial 7 has a rotatable pointer. Users can set the target pressure by rotating the pointer to the corresponding pressure value on the dial. The pressure sensor 8 senses the pressure change and triggers automatic pressure relief when the pressure reaches the value indicated by the pointer.

[0021] The bottom outer wall of the base 3 is provided with a first one-way valve 10, which is connected to the air storage cylinder 2 and is used to introduce air into the air storage cylinder 2. The second one-way valve 13 is used to discharge air.

[0022] A piston rod 4 is movably connected to the inner wall of the air pump body 1. A piston 5 is installed at the bottom end of the piston rod 4, and the outer edge of the piston 5 is in contact with the inner wall of the air pump body 1.

[0023] The top of the piston rod 4 passes through the air pump body 1 and is fixedly connected to the handle 6. A spring 14 is sleeved on the outer wall of the piston rod 4, and the spring 14 is located between the top of the air pump body 1 and the bottom of the handle 6.

[0024] The implementation principle of the automatic pressure relief air pump device in this application embodiment is as follows: When it is necessary to inflate an object, first connect the air nozzle 12 to the object to be inflated. Then, according to the air pressure value required by the object to be inflated, the user sets the target air pressure by rotating the pointer on the air pressure dial 7 to the corresponding air pressure value on the dial. Next, by pulling up and down and pushing the handle 6, the piston rod 4 drives the piston 5 to reciprocate within the air pump body 1, inflating the object through the inflation tube 11. It is worth noting that during this process, when the piston 5 rises, the air pump body 1 draws air into the air storage tank 2, creating a negative pressure in the air storage tank 2. At this time, the first one-way valve 10 is used to allow air to enter the air storage tank 2, while the second one-way valve 13 prevents external gas from entering the air storage tank 2 through the inflation nozzle 12. When the piston 5 falls, the gas in the air pump body 1 is pumped into the air storage tank 2, and the air storage tank 2 inflates the inflation tube 11 and the inflation nozzle 12. The first one-way valve 10 prevents the gas in the air storage tank 2 from leaking out through the first one-way valve 10. The gas in the inflation tube 11 is delivered into the inflation nozzle 12 through the second one-way valve 13 for inflation.

[0025] During inflation, pressure sensor 8 monitors the air pressure inside air cylinder 2 in real time. When the air pressure reaches the set value on the air pressure dial 7, pressure sensor 8 sends a signal to electric pressure relief valve 9, which opens, allowing excess gas in air cylinder 2 to be discharged automatically, thus achieving automatic pressure relief. Once the air pressure of the inflated object stabilizes at the set value, inflation can be stopped, and the inflation nozzle 12 can be removed.

[0026] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0027] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0029] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An air pump device with automatic pressure relief, comprising an air pump body (1), an air storage cylinder (2), and a base (3), characterized in that: The air pump body (1) and the air storage cylinder (2) are both fixedly connected to the top outer wall of the base (3). The air pump body (1) and the air storage cylinder (2) are connected. An inflation pipe (11) is installed on the outer wall of the air storage cylinder (2). An inflation nozzle (12) is installed at the end of the inflation pipe (11) away from the air storage cylinder (2). A second one-way valve (13) is installed between the inflation nozzle (12) and the end of the inflation pipe (11). The outer wall of the gas storage cylinder (2) is equipped with a self-pressure relief mechanism, which includes a pressure dial (7), a pressure sensor (8), and an electric pressure relief valve (9). The pressure dial (7) is installed on the top outer wall of the gas storage cylinder (2), and its bottom end extends into the interior of the gas storage cylinder (2). The pressure sensor (8) is installed on the inner wall of the gas storage cylinder (2), and the electric pressure relief valve (9) is installed on the outer wall of the gas storage cylinder (2). The pressure sensor (8) and the electric pressure relief valve (9) are arranged opposite to each other.

2. The automatic pressure relief air pump device according to claim 1, characterized in that: The bottom outer wall of the base (3) is provided with a first one-way valve (10), which is connected to the air storage cylinder (2) and is used to introduce air into the air storage cylinder (2). The second one-way valve (13) is used to discharge air.

3. The air pump device with automatic pressure relief according to claim 2, characterized in that: A piston rod (4) is movably connected to the inner wall of the air pump body (1). A piston (5) is installed at the bottom end of the piston rod (4). The outer edge of the piston (5) is in contact with the inner wall of the air pump body (1).

4. The air pump device with automatic pressure relief according to claim 3, characterized in that: The top end of the piston rod (4) passes through the air pump body (1) and is fixedly connected to the handle (6). A spring (14) is sleeved on the outer wall of the piston rod (4). The spring (14) is located between the top of the air pump body (1) and the bottom of the handle (6).

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