Inflator with safety valve

Abstract

The utility model discloses an inflator with a safety valve, which comprises a fixed base, an inflator body is fixedly arranged above the fixed base, an inflating component is arranged in the inflator body, an air storage tank is fixedly arranged on one side of the fixed base, and two sides of the top of the air storage tank are fixedly connected with telescopic springs I; the tail end of the first telescopic spring is fixedly connected with a first pressed plate, the two sides of the surface of the fixed base are fixedly connected with second telescopic springs, the tail ends of the second telescopic springs are fixedly connected with a second pressed plate, an inflation channel is formed in the fixed base, and the bottom of the second pressed plate is fixedly connected with a safety valve plate. The air inflation device has the advantages that the air inflation assembly inflates air into the air storage tank and compresses the air, the air pressure in the air storage tank is gradually increased, the first pressure bearing plate and the second pressure bearing plate are continuously extruded, the second pressure bearing plate drives the safety valve plate to seal and block the air inflation channel, the air inflation assembly cannot continuously feed air into the air storage tank, and the air inflation assembly cannot continuously feed air into the air storage tank. And tire burst is effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of air pumps, and more specifically, to an air pump with a safety valve. Background Art

[0002] In the existing technical field of air pumps, with the popularization of transportation tools and the increase in outdoor activities, as a common inflation tool, the performance and safety of air pumps have been increasingly emphasized. Traditional air pumps compress air manually or electrically and directly inject it into objects such as tires that need to be inflated. Although this method is simple and direct, there are many inconveniences and potential safety hazards in the actual use process.

[0003] First of all, in order to improve the inflation efficiency, the existing air pump designs often have an air storage tank installed on one side. As an intermediate buffer device, the air storage tank can compress and store high-pressure gas, providing a stable air pressure and a continuous air source for inflation. When the air pump is connected to the tire, the compressed air in the air storage tank can be quickly released, increasing the inflation speed and reducing the physical consumption of the user. However, while this design brings convenience, it also increases the risk of tire blowout caused by over-inflation. During the inflation process, if the operator fails to accurately control the air pressure or due to negligence causes the inflation time to be too long, the high-pressure gas in the air storage tank will continuously be injected into the tire, causing the internal air pressure of the tire to rise sharply. When the air pressure exceeds the bearing limit of the tire, a blowout will occur. A blowout not only causes damage to the tire itself but also poses a serious threat to personal safety. For the problems in the related technology, no effective solutions have been proposed yet. Content of the Utility Model

[0004] In view of the problems in the related technology, the utility model provides an air pump with a safety valve to overcome the above-mentioned technical problems existing in the existing related technology.

[0005] To this end, the specific technical solution adopted by the utility model is as follows:

[0006] An air pump with a safety valve, comprising a fixed base, an air pump body is fixedly installed above the fixed base, an air pumping assembly is installed inside the air pump body, an air storage tank is fixedly installed on one side of the fixed base, two sides of the top of the air storage tank are fixedly connected with a first telescopic spring, the end of the first telescopic spring is fixedly connected with a first pressure receiving plate, two sides of the surface of the fixed base are fixedly connected with a second telescopic spring, the end of the second telescopic spring is fixedly connected with a second pressure receiving plate, both the first pressure receiving plate and the second pressure receiving plate are slidably installed in the air storage tank, an inflation channel is opened inside the fixed base, the air pump body and the air storage tank are respectively connected to the inflation channel in a penetrating manner, the bottom of the second pressure receiving plate is fixedly connected with a safety valve plate, a safety valve groove is opened inside the fixed base, and the safety valve plate is matched with the safety valve groove.

[0007] Further, in order to fill the gas storage tank with external gas, the air pumping assembly includes a squeezing piston slidably installed inside an air pumping cylinder body. A piston rod is fixedly connected to the top of the squeezing piston. An air inlet hole is opened at the top of the air pumping cylinder body. One-way valves I are fixedly installed on both sides inside the squeezing piston.

[0008] Further, in order to prevent the gas in the gas storage tank from flowing back, one end of the inflation channel is fixedly connected to an air inlet pipe. The pressure receiving plate II is slidably connected to the air inlet pipe. A one-way valve II is fixedly connected to the top of the air inlet pipe.

[0009] Further, in order to realize the inflation of the gas storage tank into the tire, an inflation pipe is fixedly connected to one side of the gas storage tank. A pumping head is fixedly installed at the end of the inflation pipe.

[0010] Further, in order to remind the inflater when the air pressure in the gas storage tank is too high, an alarm whistle is fixedly installed on one side of the gas storage tank.

[0011] Further, in order to retract and limit the inflation pipe when the air pump is not in use as a whole, a limit buckle is fixedly installed on one side of the surface of the air pumping cylinder body.

[0012] Further, in order to facilitate the pulling of the piston rod during air pumping, a foot pedal ring is rotatably installed on one side surface of the fixed base.

[0013] The beneficial effects of the present utility model are as follows: The external gas is filled into the gas storage tank through the air pumping assembly, and then the gas storage tank inflates the tire that needs to be pumped. When the gas in the tire gradually becomes full, the air pressures in the tire and the gas storage tank gradually increase. After the air pressure in the gas storage tank increases, it pushes the pressure receiving plate I and the pressure receiving plate II to slide towards both ends of the gas storage tank respectively. When the pressure in the gas storage tank pushes the pressure receiving plate I and the pressure receiving plate II to move to both ends of the gas storage tank, the pressure receiving plate I slides past the alarm whistle, causing the alarm whistle to sound to remind the inflater, and slowly discharging the gas. The pressure receiving plate II drives the safety valve plate to move into the safety valve groove, blocking the inflation channel in the fixed base, so that the inflation assembly cannot continue to fill the gas storage tank with gas, preventing the air pressures in the gas storage tank and the tire from continuing to increase, effectively preventing tire explosion, and reducing economic losses and potential safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the following described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 is a schematic surface structure diagram of an air pump with a safety valve according to an embodiment of the present utility model;

[0016] Figure 2 is an internal sectional view of a pump with a safety valve according to an embodiment of the present utility model;

[0017] Figure 3 is a partial sectional view of a pump with a safety valve according to an embodiment of the present utility model;

[0018] Figure 4 is a side view of a pump with a safety valve according to an embodiment of the present utility model.

[0019] In the figure:

[0020] 1. Fixed base; 2. Pump cylinder body; 3. Pumping assembly; 301. Extrusion piston; 302. Piston rod; 303. Air inlet hole; 304. Check valve one; 4. Air storage tank; 5. First telescopic spring; 6. First pressure receiving plate; 7. Second telescopic spring; 8. Second pressure receiving plate; 9. Inflation channel; 10. Safety valve plate; 11. Safety valve groove; 12. Air inlet pipe; 13. Check valve two; 14. Inflation pipe; 15. Pumping head; 16. Alarm whistle; 17. Limit buckle; 18. Pedal ring. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] According to an embodiment of the present utility model, a pump with a safety valve is provided. Embodiment

[0023] As Figures 1 - 4As shown in the figure, a pump with a safety valve according to an embodiment of the present invention includes a fixed base 1. Above the fixed base 1, a pumping cylinder 2 is fixedly installed. Inside the pumping cylinder 2, a pumping assembly 3 is installed. On one side of the fixed base 1, a gas storage tank 4 is fixedly installed, which is used to fill gas into the gas storage tank 4 through the pumping assembly 3. On both sides of the top of the gas storage tank 4, a pair of first telescopic springs 5 are fixedly connected. The ends of the first telescopic springs 5 are fixedly connected to a first pressure receiving plate 6. On both sides of the surface of the fixed base 1, second telescopic springs 7 are fixedly connected. The ends of the second telescopic springs 7 are fixedly connected to a second pressure receiving plate 8. The first pressure receiving plate 6 and the second pressure receiving plate 8 are both slidably installed inside the gas storage tank 4 and are sealed with the inner wall of the gas storage tank 4. Inside the fixed base 1, an inflation channel 9 is opened. The pumping cylinder 2 and the gas storage tank 4 are respectively connected to the inflation channel 9 in a through manner, which is used for gas transmission between the pumping assembly 3 and the gas storage tank 4. At the bottom of the second pressure receiving plate 8, a safety valve plate 10 in the shape of a metal rectangle is fixedly connected. Inside the fixed base 1, a safety valve groove 11 is opened. The safety valve groove 11 is connected to the inflation channel 9. The safety valve plate 10 is matched with the safety valve groove 11. When the second pressure receiving plate 8 is squeezed, the second pressure receiving plate 8 drives the safety valve plate 10 to cooperate with the safety valve groove 11, so that the safety valve plate 10 blocks and intercepts the inflation channel 9.

[0024] As Figures 1 - 4 shown, the pumping assembly 3 includes a squeezing piston 301 slidably installed inside the pumping cylinder 2. The squeezing piston 301 is in sealed cooperation with the inner wall of the pumping cylinder 2. At the top of the squeezing piston 301, a piston rod 302 is fixedly connected. An air inlet hole 303 is opened at the top of the pumping cylinder 2. On both sides inside the squeezing piston 301, a first one-way valve 304 is fixedly installed. By driving the squeezing piston 301 to move up and down inside the pumping cylinder 2 through the piston rod 302, the squeezing piston 301 fills gas into the gas storage tank 4 through the inflation channel 9. One end of the inflation channel 9 is fixedly connected to an air inlet pipe 12. The second pressure receiving plate 8 is slidably connected to the air inlet pipe 12. At the top of the air inlet pipe 12, a second one-way valve 13 is fixedly connected, which is used to prevent the gas in the gas storage tank 4 from flowing back. On one side of the gas storage tank 4, an inflation pipe 14 is fixedly connected. At the end of the inflation pipe 14, an inflation head 15 is fixedly installed, which is used to facilitate connection with a tire to be inflated. On one side of the gas storage tank 4, an alarm whistle 16 is fixedly installed, which is used to slowly release gas and give an alarm when the air pressure in the gas storage tank 4 is relatively high. On one side of the surface of the pumping cylinder 2, a limit buckle 17 is fixedly installed. The limit buckle 17 is matched with the inflation pipe 14, which is used to facilitate the limit and retraction of the inflation pipe 14 when the whole pump is not in use. On one side surface of the fixed base 1, a pedal ring 18 is rotatably installed, which is used to facilitate pulling the piston rod 302.

[0025] In order to facilitate the understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in the actual process will be described in detail below.

[0026] In summary, by means of the above technical solutions of the present utility model, during actual application, after the inflation head 15 is connected to the valve core of the tire, the piston rod 302 is continuously pressed to make the extrusion piston 301 push the air in the inflation cylinder body 2, so that the air enters the air storage tank 4 through the inflation channel 9. The gas in the air storage tank 4 then enters the tire to be inflated through the inflation pipe 14. When the gas in the tire gradually becomes full, the air pressure in the tire and the air storage tank 4 gradually increases. After the air pressure in the air storage tank 4 increases, it pushes the first pressure receiving plate 6 and the second pressure receiving plate 8, and makes the first telescopic spring 5 and the second telescopic spring 7 gradually contract. When the pressure in the air storage tank 4 pushes the first pressure receiving plate 6 and the second pressure receiving plate 8 to move to both ends of the air storage tank 4, the first pressure receiving plate 6 slides over the alarm whistle 16, causing the alarm whistle 16 to sound to remind the inflator that the pressure in the air storage tank 4 is relatively high and slowly discharge the gas. The second pressure receiving plate 8 drives the safety valve plate 10 to move into the safety valve groove 11 to block and intercept the inflation channel 9 in the fixed base 1, so that the inflation assembly cannot continue to fill the gas into the air storage tank 4, preventing the pressure in the air storage tank 4 and the tire from continuing to increase.

[0027] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. An air pump with a safety valve, characterized in that: The invention comprises a fixed base (1), a pump body (2) is fixedly mounted on the top of the fixed base (1), a pumping assembly (3) is mounted inside the pump body (2), a gas storage tank (4) is fixedly mounted on one side of the fixed base (1), a telescopic spring (5) is fixedly connected to both sides of the top of the gas storage tank (4), a pressure plate (6) is fixedly connected to the end of the telescopic spring (5), a telescopic spring (7) is fixedly connected to both sides of the surface of the fixed base (1), and the telescopic spring (7) is fixedly connected to the other side of the surface of the fixed base (1). ) is fixedly connected to the end of a pressure plate 2 (8), the pressure plate 1 (6) and the pressure plate 2 (8) are both slidably mounted in the gas storage tank (4), an air charging passage (9) is provided inside the fixed base (1), the air pump body (2) and the gas storage tank (4) are respectively connected to the air charging passage (9), a safety valve plate (10) is fixedly connected to the bottom of the pressure plate 2 (8), a safety valve groove (11) is provided inside the fixed base (1), and the safety valve plate (10) cooperates with the safety valve groove (11).

2. An air pump with a safety valve according to claim 1, characterized in that: The pumping assembly (3) comprises an extrusion piston (301) slidably mounted inside the pump body (2), the top of the extrusion piston (301) being fixedly connected to a piston rod (302), the top of the pump body (2) being provided with an air inlet hole (303), and one-way valves (304) being fixedly mounted on both sides of the inside of the extrusion piston (301).

3. An air pump with a safety valve according to claim 1, characterized in that: One end of the inflation channel (9) is fixedly connected to an air intake pipe (12), the second pressure plate (8) is slidably connected to the air intake pipe (12), and the top of the air intake pipe (12) is fixedly connected to a second one-way valve (13).

4. An air pump with a safety valve according to claim 1, characterized in that: An air charging pipe (14) is fixedly connected to one side of the air storage tank (4), and an air pump head (15) is fixedly mounted at the end of the air charging pipe (14).

5. The air pump with a safety valve according to claim 1, characterized in that: An alarm whistle (16) is fixedly mounted on one side of the gas storage tank (4).

6. An air pump with a safety valve according to claim 1, characterized in that: A limit buckle (17) is fixedly mounted on one side of the surface of the pump body (2).

7. An air pump with a safety valve according to claim 1, characterized in that: A pedal ring (18) is rotatably mounted on one side surface of the fixed base (1).

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