Inflatable pump

Abstract

The application provides an inflator. The inflator comprises a first cylinder, a first compression cavity is formed in the first cylinder; a second cylinder, a second compression cavity is formed in the second cylinder; a bypass pipeline, one end of the bypass pipeline is communicated with the first compression cavity, and the other end of the bypass pipeline is communicated with the second compression cavity; a pressure relief mechanism, a pressure relief port is arranged on the bypass pipeline, and the pressure relief mechanism is arranged at the pressure relief port. The inflator provided by the application utilizes the bypass pipeline and the pressure relief mechanism, so that the inflator can adopt the first cylinder and the second cylinder in series to meet the requirement of rapid inflation, and can also adopt only the first cylinder to perform inflation to ensure that the inflation pressure meets the requirement, thereby effectively improving the working efficiency of the inflator.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of inflating equipment, and particularly relates to an inflating pump. BACKGROUND

[0002] The inflating power and efficiency of the existing inflating pump are mainly affected by the size of the air cylinder and the power of the motor and other parameters. In particular, in the scene where a large amount of air needs to be inflated, the inflating time is long, for example, in the process of inflating a tire, the air pressure in the tire does not change much, and the existing inflating pump can only work according to the set power, so that the working efficiency of the inflating pump is poor. SUMMARY

[0003] In order to solve the technical problem of poor working efficiency of the inflating pump in the prior art, an inflating pump is provided, in which a first air cylinder and a second air cylinder work together to improve the working efficiency.

[0004] An inflating pump comprises:

[0005] a first air cylinder, a first compression cavity being formed in the first air cylinder;

[0006] a second air cylinder, a second compression cavity being formed in the second air cylinder;

[0007] a bypass pipeline, one end of the bypass pipeline being in communication with the first compression cavity, and the other end of the bypass pipeline being in communication with the second compression cavity;

[0008] a pressure relief mechanism, a pressure relief port being arranged on the bypass pipeline, and the pressure relief mechanism being arranged at the pressure relief port.

[0009] The inflating pump further comprises a one-way flow mechanism, the one-way flow mechanism being arranged in the bypass pipeline, and the airflow direction of the one-way flow mechanism being from the second compression cavity to the first compression cavity.

[0010] The pressure relief mechanism comprises a pressure relief housing and a pressure relief valve core, a pressure relief channel being arranged on the pressure relief housing, the pressure relief valve core having a closed state of closing the pressure relief channel and a pressure relief state of opening the pressure relief channel, and the pressure relief channel being in communication with the pressure relief port.

[0011] The pressure relief mechanism further comprises a reset mechanism, the reset mechanism being arranged in the pressure relief housing, and the reset mechanism being capable of switching the pressure relief valve core to the closed state.

[0012] A pressure inlet is arranged on the pressure relief housing, the pressure inlet being in communication with the first compression cavity, and the pressure inlet being capable of switching the pressure relief valve core to the pressure relief state.

[0013] The first cylinder is provided with a first piston, the second cylinder is provided with a second piston, and the first piston and the second piston move synchronously.

[0014] The inflator pump further comprises a connecting rod, one end of the connecting rod is arranged on the first piston, and the other end of the connecting rod is arranged on the second piston.

[0015] The axis of the first piston, the axis of the connecting rod and the axis of the second piston are collinear.

[0016] The inflator pump further comprises a driving mechanism, and the first piston and the second piston are connected with the driving mechanism.

[0017] The diameter of the first piston is smaller than the diameter of the second piston.

[0018] The first cylinder is provided with an inflation port, the inflation port is communicated with the first compression cavity, and a one-way flow mechanism is arranged at the inflation port, and the flow direction of the one-way flow mechanism is from the first compression cavity to the outside of the first cylinder.

[0019] The inflator pump provided by the application utilizes the bypass pipeline and the pressure relief mechanism, so that the inflator pump can adopt the first cylinder and the second cylinder in series for inflation to meet the requirement of rapid inflation, and can only adopt the first cylinder for inflation to ensure that the inflation pressure meets the requirement, thereby effectively improving the working efficiency of the inflator pump. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 The structure schematic diagram of the inflator pump provided by the embodiment of the application is shown;

[0021] Fig. 2 Another structure schematic diagram of the inflator pump provided by the embodiment of the application is shown;

[0022] Fig. 3 The perspective view of the inflator pump provided by the embodiment of the application is shown;

[0023] In the drawings:

[0024] 1, first cylinder; 11, first compression cavity; 2, second cylinder; 21, second compression cavity; 3, bypass pipeline; 4, one-way flow mechanism; 51, pressure relief shell; 52, pressure relief valve core; 53, reset mechanism; 54, pressure inlet; 12, first piston; 22, second piston; 6, connecting rod; 7, driving mechanism. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the application more clear, the application is further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application, and are not used to limit the application.

[0026] like Figs. 1-3 The air pump shown includes: a first cylinder 1, which has a first compression chamber 11; a second cylinder 2, which has a second compression chamber 21; a bypass pipe 3, one end of which is connected to the first compression chamber 11 and the other end of which is connected to the second compression chamber 21; and a pressure relief mechanism, which has a pressure relief port on the bypass pipe 3. By utilizing the bypass pipe 3 and the pressure relief mechanism, the air pump can use the first cylinder 1 and the second cylinder 2 in series for inflation to meet the requirements of rapid inflation, or it can use only the first cylinder 1 for inflation to ensure that the inflation pressure meets the requirements, thereby effectively improving the working efficiency of the air pump. Fig. 1 As shown, the air pump is connected in series with the first cylinder 1 and the second cylinder 2 to achieve rapid inflation, as required. Fig. 2 As shown, the air pump is in a state where only the first cylinder 1 is used for inflation to ensure inflation pressure.

[0027] Taking the use of an air pump to inflate a tire as an example, in the initial stage of inflation, the air pressure inside the tire is much lower than the inflation pressure of the air pump. At this time, the air pump uses the first cylinder 1 and the second cylinder 2 to work simultaneously for inflation. The gas in the second cylinder 2 enters the first compression chamber 11 through the bypass pipe 3 and mixes with the gas in the first cylinder 1 before being discharged together, thereby increasing the inflation volume and achieving the purpose of rapid inflation. As the air pump works, the air pressure inside the tire gradually increases. When the air pressure inside the tire reaches a certain level, the inflation efficiency of the first cylinder 1 and the second cylinder 2 working simultaneously begins to decrease. In order to ensure the air supply pressure of the air pump, the air pump only uses the first cylinder 1 for air supply at this time, while the gas in the second cylinder 2 is directly discharged into the atmosphere through the pressure relief mechanism. This is equivalent to the air pump's drive mechanism driving the first cylinder 1 to work, thereby ensuring that the pressure value output by the first cylinder 1 meets the requirements.

[0028] The air pump also includes a one-way flow mechanism 4, which is disposed within the bypass pipe 3. The airflow direction of the one-way flow mechanism 4 is from the second compression chamber 21 to the first compression chamber 11. The one-way flow mechanism 4 restricts the airflow to flow only from the second compression chamber 21 to the first compression chamber 11, and finally discharges it from the air pump to complete the inflation, ensuring the reliable operation of the air pump.

[0029] As an implementation, the pressure relief mechanism comprises a pressure relief housing 51 and a pressure relief valve core 52, the pressure relief housing 51 is provided with a pressure relief passage, the pressure relief valve core 52 has a closed state of closing the pressure relief passage and a pressure relief state of opening the pressure relief passage, and the pressure relief passage is communicated with the pressure relief port. When the pressure relief valve core 52 is switched to the pressure relief state, the gas in the second compression cavity 21 is discharged to the atmosphere through the partial bypass pipeline 3 and the pressure relief passage in turn, and when the pressure relief valve core 52 is switched to the closed state, the gas in the second compression cavity 21 can only be sent into the first compression cavity 11 through the bypass pipeline 3 and finally discharged from the inflation port of the inflation pump.

[0030] The pressure relief mechanism further comprises a reset mechanism 53, the reset mechanism 53 is arranged in the pressure relief housing 51, and the reset mechanism 53 can switch the pressure relief valve core 52 to the closed state. The reset mechanism 53 makes the pressure relief mechanism maintain the normal state that the pressure relief passage is closed by the pressure relief valve core 52. The reset mechanism 53 can also limit the movement of the pressure relief valve core 52, and only when the external force acting on the pressure relief valve core 52 reaches a certain value, the pressure relief valve core 52 can be moved to switch to the pressure relief state.

[0031] Specifically, the reset mechanism 53 is a spring, when the pressure relief valve core 52 is switched to the pressure relief state under the action of the external force, the spring is compressed to accumulate elastic force, when the external force acting on the pressure relief valve core 52 is removed, the spring begins to restore to the original state, thereby driving the pressure relief valve core 52 to switch to the closed state, so as to close the pressure relief passage and realize the closing of the pressure relief mechanism.

[0032] The pressure relief housing 51 is provided with a pressure inlet 54, the pressure inlet 54 is communicated with the first compression cavity 11, and the pressure inlet 54 can switch the pressure relief valve core 52 to the pressure relief state. That is, the pressure gas in the first compression cavity 11 is introduced into the pressure relief housing 51 through the pressure inlet 54, and serves as the external force to drive the movement of the pressure relief valve core 52, thereby realizing the movement of the pressure relief valve core 52. Taking the tire as an example, the pressure value driving the movement of the pressure relief valve core 52 is set to 2bar, and only when the gas pressure at the pressure inlet 54 reaches 2bar, the pressure relief valve core 52 can be driven to move. At the same time, only when the pressure value reaches 2bar, the extrusion force provided by the reset mechanism 53 to the pressure relief valve core 52 can be overcome.

[0033] In order to keep the gas supply states of the first cylinder 1 and the second cylinder 2 same, the first cylinder 1 is provided with a first piston 12, the second cylinder 2 is provided with a second piston 22, and the first piston 12 and the second piston 22 move synchronously. The exhaust cycle of the first cylinder 1 and the second cylinder 2 is avoided to have difference, and the working reliability of the inflation pump is ensured.

[0034] As an implementation, the inflator pump further comprises a connecting rod 6, one end of the connecting rod 6 is arranged on the first piston 12, and the other end of the connecting rod 6 is arranged on the second piston 22.

[0035] Preferably, the axis of the first piston 12, the axis of the connecting rod 6 and the axis of the second piston 22 are collinear. Further, the first piston 12 and the second piston 22 can be synchronously operated, and eccentric motion of the first piston 12 and the second piston 22 due to different sizes is avoided, and reliable operation of the inflator pump is ensured.

[0036] The inflator pump further comprises a driving mechanism 7, and the first piston 12 and the second piston 22 are connected with the driving mechanism 7.

[0037] Specifically, the driving mechanism 7 comprises a motor and a cam mechanism, the motor drives the cam mechanism to rotate, and the cam mechanism drives the first piston 12 and the second piston 22 to synchronously reciprocate to realize compression of the gas.

[0038] Preferably, the diameter of the first piston 12 is smaller than the diameter of the second piston 22. The diameter of the first piston 12 is reduced, so that a higher inflation pressure can be achieved in the first cylinder 1, thereby improving the upper limit of the inflation pressure of the inflator pump.

[0039] The first cylinder 1 is provided with an inflation port, the inflation port is in communication with the first compression chamber 11, and the inflation port is provided with a one-way flow mechanism 4, and the flow direction of the one-way flow mechanism 4 is from the first compression chamber 11 to the outside of the first cylinder 1. The first cylinder 1 is prevented from affecting the inflation effect by obtaining the gas from the to-be-inflated object.

[0040] Optionally, a pressure sensor is arranged at the inflation port, and when the pressure value obtained by the pressure sensor at the inflation port reaches a set value, the inflator pump is controlled to stop working.

[0041] The above-mentioned embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it cannot be understood as a limitation on the patent scope of the present application. It should be pointed out that, for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. An air pump, characterized in that: include: The first cylinder (1) has a first compression chamber (11) formed inside it. The second cylinder (2) has a second compression chamber (21) formed inside it; A bypass pipe (3) is provided, one end of which is connected to the first compression chamber (11) and the other end of which is connected to the second compression chamber (21). The pressure relief mechanism is provided with a pressure relief port on the bypass pipeline (3), and the pressure relief mechanism is located at the pressure relief port; In the initial stage of inflation, the air pump can use the first cylinder (1) and the second cylinder (2) in parallel for inflation; when the air pressure in the tire reaches a certain level, the gas in the second cylinder (2) is directly discharged through the pressure relief mechanism so that only the first cylinder (1) is used for inflation.

2. The air pump according to claim 1, characterized in that: The air pump also includes a one-way flow mechanism (4), which is located in the bypass pipeline (3), and the airflow direction of the one-way flow mechanism (4) is from the second compression chamber (21) to the first compression chamber (11).

3. The air pump according to claim 1, characterized in that: The pressure relief mechanism includes a pressure relief housing (51) and a pressure relief valve core (52). The pressure relief housing (51) is provided with a pressure relief channel. The pressure relief valve core (52) has a closed state that closes the pressure relief channel and a pressure relief state that opens the pressure relief channel. The pressure relief channel is connected to the pressure relief port.

4. The air pump according to claim 3, characterized in that: The pressure relief mechanism also includes a reset mechanism (53), which is disposed inside the pressure relief housing (51) and can switch the pressure relief valve core (52) to the closed state.

5. The air pump according to claim 3, characterized in that: The pressure relief housing (51) is provided with a pressure inlet (54), which is connected to the first compression chamber (11), and the pressure inlet (54) enables the pressure relief valve core (52) to switch to the pressure relief state.

6. The air pump according to claim 1, characterized in that: The first cylinder (1) is provided with a first piston (12), and the second cylinder (2) is provided with a second piston (22). The first piston (12) and the second piston (22) move synchronously.

7. The air pump according to claim 6, characterized in that: The air pump also includes a connecting rod (6), one end of which is disposed on the first piston (12), and the other end of which is disposed on the second piston (22).

8. The air pump according to claim 7, characterized in that: The axis of the first piston (12), the axis of the connecting rod (6), and the axis of the second piston (22) are collinear.

9. The air pump according to claim 6, characterized in that: The air pump also includes a drive mechanism (7), and the first piston (12) and the second piston (22) are both connected to the drive mechanism (7).

10. The air pump according to claim 6, characterized in that: The diameter of the first piston (12) is smaller than the diameter of the second piston (22).

11. The air pump according to claim 1, characterized in that: The first cylinder (1) is provided with an air inlet, which is connected to the first compression chamber (11). A one-way flow mechanism (4) is provided at the air inlet, and the flow direction of the one-way flow mechanism (4) is from the first compression chamber (11) to the outside of the first cylinder (1).

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