Rapid and automatic inflation device for balls and rapid and automatic inflation equipment for balls

Abstract

The utility model provides a fast automatic inflating device for balls, which comprises a pressure reducing valve, a flow meter, a one-way valve, an electromagnetic directional valve, a photoelectric switch, a relay, an air source, a valve and an inflating needle, the inflating needle is communicated with the valve, and the pressure reducing valve is communicated with the air source; the flowmeter is communicated with the pressure reducing valve; the air outlet end of the one-way valve communicates with the reducing valve; the electromagnetic reversing valve is communicated with an air source; the flow meter, the one-way valve and the electromagnetic directional valve are all communicated with the valve; emitters and receivers of the electromagnetic directional valve and the photoelectric switch are connected in parallel at two ends of a power supply through leads, and the emitters and the receivers are respectively mounted on two sides of the flow meter; the two ends of the relay are electrically connected with the power source and the receiver respectively. The relay is provided with a normally-open contact. The air inflation device is high in air inflation speed, supports one person to inflate a plurality of balls at the same time, and greatly improves production efficiency. In addition, the inflation device is further provided with an automatic gas cut-off function after full filling, and safety and convenience in the using process are guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of ball inflation technology, specifically relating to a rapid automatic inflation device and equipment for balls. Background Technology

[0002] Currently, the market lacks efficient automated inflation equipment. Factory workers can only rely on traditional manual methods, roughly judging whether the internal air pressure of a ball is up to standard by touching it. This method is not only inaccurate, making it difficult to ensure consistent air pressure in every ball, but also prone to fatigue and reduced work efficiency due to prolonged manual operation. Furthermore, existing inflation devices are not automatic; workers must continuously hold the inflation handle to inflate a single ball, without removing their hands or eyes from the ball. After manually feeling the ball is fully inflated, the nozzle must be immediately removed. A single worker can only inflate one ball at a time, resulting in low inflation efficiency. For mass-produced ball products such as basketballs, soccer balls, volleyballs, and beach balls, this traditional inflation method clearly cannot meet the high demands of modern industrial production for standardization and automation. Therefore, we are committed to developing an intelligent and efficient automated inflation device to solve this practical problem. Utility Model Content

[0003] To solve the above problems, this utility model provides a ball-filling device and equipment that can not only quickly and automatically inflate the ball, but also accurately control the internal pressure of the ball within a set range and has high inflation efficiency.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A rapid automatic inflation device for balls includes a pressure reducing valve, a flow meter, a one-way valve, a solenoid directional valve, a photoelectric switch, a relay, an air source for supplying air, a valve for controlling the inflation opening and closing, and an inflation needle for inserting into the ball for inflation. The inflation needle is connected to the outlet end of the valve, and the inlet end of the pressure reducing valve is connected to the air source through a pipe. The flow meter is a transparent tube float flow meter, and the inlet end of the flow meter is connected to the outlet end of the pressure reducing valve through a pipe. The outlet end of the one-way valve is connected to the outlet end of the pressure reducing valve through a pipe. The inlet end of the solenoid directional valve is connected to... The flow meter is connected to the air source via a pipeline; the outlet of the flow meter, the inlet of the one-way valve, and the outlet of the solenoid directional valve are all connected to the inlet of the valves via pipelines; the photoelectric switch includes a transmitter and a receiver, and the transmitter, receiver, and solenoid directional valve are connected in parallel to the two ends of the power supply via wires. The body of the transmitter and the body of the receiver are respectively installed on both sides of the transparent tube of the flow meter; one end of the relay is electrically connected to the positive terminal of the power supply, and the other end is electrically connected to the signal output terminal of the receiver. The relay has a normally open contact electrically connected between the negative terminal of the power supply and the solenoid directional valve.

[0006] Furthermore, when the valve is closed or the internal air pressure of the ball reaches the preset pressure value of the pressure reducing valve, the float of the flow meter is positioned between the beams of the transmitter and receiver, the relay is de-energized, the solenoid directional valve is de-energized, and it disconnects its air path. When the valve is open and the internal air pressure of the ball has not reached the preset pressure value of the pressure reducing valve, the float of the flow meter is not blocking the beams of the transmitter and receiver, the relay is energized, the solenoid directional valve is energized, and it connects and opens its air path.

[0007] Furthermore, the gas pressure supplied to the inlet of the pressure reducing valve and the inlet of the solenoid reversing valve is greater than the preset pressure value of the pressure reducing valve.

[0008] Furthermore, a pressure gauge is connected to the pressure reducing valve to display the preset pressure value inside the valve.

[0009] Furthermore, the valve is a manual sliding valve, comprising a valve body, a valve core, a sealing ring, a retaining ring, and a baffle. The valve body is a hollow tube open at both ends. The valve core is slidably fitted inside the valve body, with its outer diameter smaller than the inner diameter of the valve body. One end of the valve core extends out of the valve body as an air inlet, connected to the air outlet of a flow meter, the air inlet of a one-way valve, and the air outlet of a solenoid directional valve via pipelines. The other end of the valve core extends out of the valve body as an air outlet, connected to an air injection needle. Axial air inlets and axial air outlets are respectively provided at both ends of the valve core along the axial direction, and radial air inlets and radial air outlets are respectively provided in the middle of the valve core along the radial direction. The axial air inlets and radial air outlets are located on the air inlet side of the valve core and are interconnected. The valve core has an axial and radial air outlet located on the air outlet side and interconnected. Three sealing rings are embedded in the cavity formed between the inner wall of the valve body and the outer wall of the valve core. Both the retaining ring and the baffle are located on the outer side of the valve body, with their outer diameters larger than the inner diameter of the valve body. The retaining ring is installed outside the air outlet end of the valve core, and the baffle is installed outside the air inlet end of the valve core. When the valve body slides to contact the baffle, the radial air inlet and radial air outlet are located on either side of the intermediate sealing ring and are not interconnected, thus closing the valve. When the valve body slides to contact the retaining ring, the radial air inlet and radial air outlet are located between the sealing ring and the intermediate sealing ring on the air inlet side of the valve core and are interconnected, thus opening the valve. The manual sliding valve allows for manual control of the air passage by pushing and pulling the valve body, and maintains pressure in the ball when the air is cut off. Holding the valve body, pushing the air injection needle into the ball opens the valve, and pulling out the air injection needle closes the valve, making operation simple, convenient, and quick.

[0010] Furthermore, when the valve body slides to contact the baffle, the radial air inlet is located between the sealing ring on one side of the valve core's air inlet end and the middle sealing ring, and the radial air outlet is located between the sealing ring on one side of the valve core's air outlet end and the middle sealing ring. The radial air inlet and the radial air outlet are not connected to each other, and the valve is closed.

[0011] Furthermore, the radial air inlet and radial air outlet are both multiple and evenly distributed, preferably four.

[0012] Furthermore, to facilitate unblocking, the retaining ring is detachably locked in a pre-set groove outside the air outlet end of the valve core. By removing the retaining ring and pulling the valve core out of the valve body, the blockage can be cleared. The baffle is integrally fixed outside the air inlet end of the valve core.

[0013] A rapid automatic inflation device for balls includes at least one of the aforementioned rapid automatic inflation devices for balls.

[0014] Compared with the prior art, the advantages of this utility model are as follows:

[0015] The rapid automatic inflation device described in this invention not only inflates quickly but also supports one person to inflate multiple balls simultaneously, greatly improving production efficiency. Furthermore, the inflation device is equipped with an automatic air shut-off function when fully inflated, ensuring safety and convenience during use. Attached Figure Description

[0016] The structure of the utility model will be further described in detail below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the air circuit of the rapid automatic inflation device for balls described in this utility model.

[0018] Figure 2 This is a circuit diagram of the ball-using rapid automatic inflation device described in this utility model.

[0019] Figure 3 This is a schematic diagram of the valve of this utility model in the open state (inserted into the ball).

[0020] Figure 4 This is a schematic diagram of the valve of this utility model in the closed state (the state where the ball is pulled out of the container).

[0021] The following components are shown in the diagram: 1-Pressure reducing valve, 2-Pressure gauge, 3-Flow meter, 4-Solenoid directional valve, 5-Valve, 51-Valve body, 52-Valve core, 53-Sealing ring, 54-Retaining ring, 55-Baffle, 56-Axial air inlet, 57-Axial air outlet, 58-Radial air inlet, 59-Radial air outlet, 6-Transmitter, 7-Receiver, 8-Relay, 9-Check valve. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. The described embodiments are merely some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed herein. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1

[0025] This embodiment provides a rapid automatic inflation device for balls, including an installation box (which can be a mounting base, or other structures, such as a plate, platform, or bracket), and five rapid automatic inflation devices for balls are evenly installed inside the box.

[0026] like Figure 1-2 As shown, each of the aforementioned ball-type rapid automatic inflation devices mainly consists of an air circuit system, an electrical control system, and a valve 5. The air circuit system mainly consists of a pressure reducing valve 1, a flow meter 2, a one-way valve 9, a solenoid reversing valve 3, an air source, an air injection needle, and intermediate pipes connected in series. The electrical control system mainly consists of a photoelectric switch and a relay 8.

[0027] The gas source is used to supply gas to the device. The gas source can be an air pump or a high-pressure gas storage tank equipped with an air pump. The gas pressure supplied to the inlet of the pressure reducing valve 1 and the inlet of the solenoid reversing valve 3 is greater than the preset pressure value of the pressure reducing valve 1.

[0028] The valve 5 is used to control the opening and closing of the inflation circuit. The valve 5 is opened and closed manually by pressing or sliding to open and close the air passage. The valve 5 can be an existing valve.

[0029] The air-inflating needle is a hollow needle-shaped body that is connected to the air outlet of valve 5 and inserted into the ball to inflate the ball.

[0030] The inlet of the pressure reducing valve 1 is connected to the gas source via a pipeline. The pressure reducing valve 1 is a conventional device that reduces the inlet pressure to a desired outlet pressure through adjustment, and automatically maintains a stable outlet pressure by relying on the energy of the medium itself. The pressure reducing valve 1 plays a crucial role in pressure regulation and overflow, and the pressure gauge 2 installed on it can visually display the preset inflation pressure value (preset pressure value).

[0031] The flow meter 4 is an existing transparent tube float flow meter, which has a transparent tube with a float that moves along the transparent tube under the influence of airflow. The inlet of the flow meter 4 is connected to the outlet of the pressure reducing valve 1 through a pipe, and the outlet of the flow meter 4 is connected to the inlet of the valve 5 through a pipe. The air source is connected to the valve 5 through the pressure reducing valve 1 and the flow meter 4 to form a slow inflation circuit, ensuring precise control of the inflation pressure.

[0032] The inlet of the one-way valve 9 is connected to the inlet of the valve 5 via a pipe, and the outlet of the one-way valve 9 is connected to the outlet of the pressure reducing valve 1 via a pipe. The one-way valve 9 and the series-connected pipes form a bypass pipeline. This ensures that the float of the flow meter 4 can fall smoothly after the pressure inside the ball reaches the preset pressure value.

[0033] The air inlet of the electromagnetic reversing valve 3 is connected to the air source through a pipe, and the air outlet of the electromagnetic reversing valve 3 is connected to the air inlet of the valve 5 through a pipe. The air source passes through the electromagnetic reversing valve 3 directly to the valve 5 to form a fast charging circuit, effectively reducing the charging time.

[0034] The photoelectric switch includes a transmitter 6 and a receiver 7. The transmitter 6, receiver 7, and electromagnetic reversing valve 3 are connected in parallel to the two ends of a power supply via wires. The bodies of the transmitter 6 and receiver 7 are respectively mounted on both sides of the transparent tube of the flow meter 4. The flow meter 4 is cleverly positioned between the transmitter 6 and receiver 7 of the photoelectric switch. Once the float of the flow meter 4 is pushed upward by the airflow, it will block the beam of light from the transmitter 6 of the photoelectric switch. By moving the float of the flow meter 4, the beam of light from the photoelectric switch is either blocked or allowed to pass through, thereby achieving on / off control of the photoelectric switch.

[0035] One end of the relay 8 is electrically connected to the positive terminal of the power supply, and the other end is electrically connected to the signal output terminal of the receiver 7. The relay 8 has a normally open contact electrically connected between the negative terminal of the power supply and the electromagnetic reversing valve 3.

[0036] When valve 5 is closed or the internal air pressure of the ball reaches the preset pressure value of pressure reducing valve 1, the float of flow meter 4 is positioned between the beams of transmitter 6 and receiver 7, relay 8 is de-energized, and solenoid directional valve 3 is de-energized and disconnects its air path. When valve 5 is open and the internal air pressure of the ball has not reached the preset pressure value of pressure reducing valve 1, the float of flow meter 4 is not blocking the beam between transmitter 6 and receiver 7, relay 8 is energized, and solenoid directional valve 3 is energized and opens its air path.

[0037] Working principle:

[0038] Before inflation, close valve 5 and observe pressure gauge 2. Adjust pressure reducing valve 1 to achieve the desired preset pressure value. When valve 5 is closed, airflow cannot pass through flow meter 4, causing the float in flow meter 4 to block the beam between photoelectric switch transmitter 6 and receiver 7. Consequently, receiver 7 cannot detect any signal and therefore has no signal output to relay 8. This results in no current flowing through the coil of relay 8, keeping the normally open switch of relay 8 normally open, and the solenoid directional valve 3 is also disconnected as it is not energized.

[0039] During inflation, the air needle is pushed into the bulb while valve 5 is opened. Airflow from the air source passes sequentially through pressure reducing valve 1 and flow meter 4, then into valve 5. The air is then fed into the bulb via the air needle connected to valve 5. As the airflow passes through flow meter 4, the float in flow meter 4 is impacted by the airflow, causing it to rise. When the float rises to a certain position (moving to a position where it does not block the beam between transmitter 6 and receiver 7), receiver 7 receives the beam emitted by transmitter 5, triggering a photoelectric switch. The photoelectric switch generates a signal output, which is transmitted by receiver 7 to the coil of relay 8, energizing and activating relay 8. Energization of relay 8 causes its normally open contact to close. This closure further activates the electromagnetic reversing valve 3, initiating the inflation process. Airflow flows from the air source and simultaneously enters the bulb via another path, sequentially passing through electromagnetic reversing valve 3, valve 5, and the air needle, achieving rapid inflation. Fast inflation mode is activated, enabling dual-path inflation (fast and slow inflation in parallel).

[0040] As the pressure inside the ball gradually increases, when it exceeds the preset pressure value of the pressure reducing valve 1, the float of the flow meter 4 descends under the action of air pressure and blocks the beam emitted by the photoelectric switch transmitter 6 to the receiver 7 again, causing the photoelectric switch to close. The coil of the relay 8 is de-energized, the normally open contact of the relay opens, the electromagnetic reversing valve 3 is de-energized and closed, the fast charging mode is stopped, and the pressure reducing valve 1 is used to maintain the pressure stability inside the ball.

[0041] During inflation, simply insert the air needle into the bulb; there's no need to wait for it to fill completely before switching to another air needle and inflating another bulb. This process can be repeated continuously. In the time it takes to inflate a single bulb, one person can operate multiple bulbs, significantly improving inflation efficiency. Because the pressure relief valve 1 continuously maintains the pressure inside the bulb, the internal pressure remains stable and will not exceed the preset pressure value. Even without removing the air needle, the bulb will not burst, greatly improving both safety and efficiency. Example 2

[0042] To make opening and closing valve 5 simpler, more convenient and more efficient, this embodiment makes the following improvements to valve 5 based on embodiment 1.

[0043] like Figure 3 and Figure 4 As shown, the valve 5 is a manual sliding valve, which includes a valve body 51, a valve core 52, a sealing ring 53, a retaining ring 54, and a baffle 55.

[0044] The valve body 51 is a hollow tube with openings at both ends. The valve body 51 has annular grooves for installing sealing rings 53 at both ends and in the middle of its inner wall.

[0045] The valve core 52 is slidably sleeved inside the valve body 51, and its outer diameter is smaller than the inner diameter of the valve body 51. An annular cavity is formed between the valve core 52 and the valve body 51 for gas flow. One end of the valve core 52 extends out of the valve body 51 as an air inlet and is connected to the air outlet of the flow meter 4, the air inlet of the one-way valve 9, and the air outlet of the solenoid directional valve 3 via pipes. The other end of the valve core 52 extends out of the valve body 51 as an air outlet and is connected to the air injection needle. Axial air inlets 56 and axial air outlets 56 are respectively provided at both ends of the valve core 52 along the axial direction. A vent 57 and an axial air inlet 56 are connected to a pipe that is connected to the outlet of the flow meter 4, the inlet of the one-way valve 9, and the outlet of the solenoid directional valve 3, respectively. The axial air outlet 57 is connected to an air injection needle. Radial air inlets 58 and radial air outlets 59 are provided radially in the middle of the valve core 52. The axial air inlets 56 and radial air inlets 58 are located on the inlet side of the valve core 51 and are interconnected. The axial air outlets 57 and radial air outlets 59 are located on the outlet side of the valve core 52 and are interconnected. There are four radial air inlets 58 and four radial air outlets 59, evenly distributed.

[0046] The number of sealing rings 53 is three, and they are respectively embedded in the cavity formed between the inner wall of the valve body 51 and the outer wall of the valve core 52. The three sealing rings 53 form two independent cavities: cavity A, which is closer to the air inlet end of the valve core 52, and cavity B, which is closer to the air outlet end of the valve core 52. Cavities A and B are not connected to each other.

[0047] Both the retaining ring 54 and the baffle 55 are located outside the valve body 51 and their outer diameters are larger than the inner diameter of the valve body 51, for limiting the position. The retaining ring 54 is installed outside the air outlet end of the valve core 52, and the baffle 55 is integrally fixed outside the air inlet end of the valve core 52.

[0048] When the valve body 51 slides to contact the baffle 55, the radial air inlet 56 is located between the intermediate sealing ring 53 and the sealing ring 53 on the air inlet side of the valve core 52 (located in cavity A and connected to cavity A), the radial air outlet 59 is located between the intermediate sealing ring 53 and the sealing ring 53 on the air outlet side of the valve core 52 (located in cavity B and connected to cavity B), the radial air inlet 58 and the radial air outlet 59 are located in different non-connected cavities and are not connected to each other, and the valve 5 is closed.

[0049] When the valve body 51 slides to contact the retaining ring 54, the radial air inlet 58 and the radial air outlet 59 are both located between the intermediate sealing ring 53 and the sealing ring 53 on the side of the air inlet end of the valve core 52 (located in cavity A and connected to cavity A). The radial air inlet 58 and the radial air outlet 59 are both located in the same cavity and are connected to each other. When the valve 5 opens, the airflow flows from the air inlet end of the valve core 52 into the axial air inlet 56, then from the radial air inlet 58 into cavity A, then from cavity A into the radial air outlet 59, from the radial air outlet 59 into the axial air outlet 57, and finally from the air outlet end of the valve core 52 into the air injection needle.

[0050] like Figure 2 As shown, valve 5 is in the closed state before air is pumped in.

[0051] When inflating the air, hold the valve body 51 of the hand-operated valve and insert the air injection needle into the ball. The valve body 51 will slide towards the retaining ring 54. When the air injection needle is pushed into the ball, the valve body 51 will slide to the position where it contacts the retaining ring 54 (e.g., Figure 3 (as shown in the image), at this point valve 5 opens, allowing gas to enter the sphere.

[0052] After inflation is complete, hold the valve body 51 of the hand-operated valve and pull the inflation needle outward from the bulb. The valve body 51 will slide towards the baffle 55. When the inflation needle is pulled out of the bulb, the valve body 51 will slide to the position where it contacts the baffle 55 (e.g., Figure 4 (As shown in the figure), the radial air inlet 58 and the radial air outlet 59 are separated by the middle sealing ring 53. At this time, the valve 5 is closed, and the gas can no longer enter the sphere. Example 3

[0053] To facilitate clearing blockages, the following settings are added to this embodiment based on embodiment 2.

[0054] The retaining ring 54 is detachably locked in a pre-set groove outside the air outlet end of the valve core 52. By removing the retaining ring 54 and pulling the valve core 52 out of the valve body 51, the blockage can be cleared.

[0055] Other aspects of this utility model that are not detailed herein are all conventional techniques known to those skilled in the art.

[0056] It should be noted that the terms “comprising,” “including,” or any other variations are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0057] The scope of protection of this utility model is not limited to the technical solutions disclosed in the specific embodiments. Any modifications, equivalent substitutions, improvements, etc., made to the above embodiments based on the technical essence of this utility model shall fall within the scope of protection of this utility model.

Claims

1. A rapid automatic inflation device for balls, comprising a pressure reducing valve, a flow meter, a one-way valve, a solenoid directional valve, a photoelectric switch, a relay, an air source, a valve, and an inflation needle; the inflation needle is connected to the air outlet of the valve, characterized in that: The inlet of the pressure reducing valve is connected to the air source through a pipe; the flow meter is a transparent tube float flow meter, and its inlet is connected to the outlet of the pressure reducing valve through a pipe; the outlet of the one-way valve is connected to the outlet of the pressure reducing valve through a pipe; the inlet of the electromagnetic reversing valve is connected to the air source through a pipe; the outlet of the flow meter, the inlet of the one-way valve, and the outlet of the electromagnetic reversing valve are all connected to the inlet of the valves through pipes; the photoelectric switch includes a transmitter and a receiver, and the transmitter, receiver, and electromagnetic reversing valve are connected in parallel to the two ends of the power supply through wires. The body of the transmitter and the body of the receiver are respectively installed on both sides of the transparent tube of the flow meter; one end of the relay is electrically connected to the positive terminal of the power supply, and the other end is electrically connected to the signal output terminal of the receiver. The relay has a normally open contact electrically connected between the negative terminal of the power supply and the electromagnetic reversing valve.

2. The rapid automatic inflation device for balls according to claim 1, characterized in that: When the valve is closed or the internal air pressure of the ball reaches the preset pressure value of the pressure reducing valve, the float of the flow meter just blocks the beam of light between the transmitter and the receiver; When the valve is open and the internal air pressure of the ball does not reach the preset pressure value of the pressure reducing valve, the float of the flow meter does not block the beam between the transmitter and the receiver.

3. The rapid automatic inflation device for balls according to claim 1, characterized in that: The gas pressure supplied to the inlet of the pressure reducing valve and the inlet of the solenoid reversing valve is greater than the preset pressure value of the pressure reducing valve.

4. The rapid automatic inflation device for balls according to claim 1, characterized in that: A pressure gauge is connected to the pressure reducing valve to display the preset pressure value inside the valve.

5. The rapid automatic inflation device for balls according to claim 1, characterized in that: The valve is a manual sliding valve, comprising a valve body, a valve core, a sealing ring, a retaining ring, and a baffle. The valve body is a hollow tube open at both ends. The valve core is slidably fitted inside the valve body, with its outer diameter smaller than the inner diameter. One end of the valve core extends out of the valve body as an air inlet, connected to the air outlet of a flow meter, the air inlet of a one-way valve, and the air outlet of a solenoid directional valve via pipelines. The other end of the valve core extends out of the valve body as an air outlet, connected to an air injection needle. Axial air inlets and outlets are provided at both ends of the valve core along the axial direction, and radial air inlets and outlets are provided in the middle of the valve core along the radial direction. The axial and radial air inlets are located on the air inlet side of the valve core and are interconnected. The axial and radial air outlets are located on the air outlet side of the valve core and are interconnected. Three sealing rings are embedded in the cavity formed between the inner wall of the valve body and the outer wall of the valve core. Both the retaining ring and the baffle are located on the outer side of the valve body, and their outer diameters are larger than the inner diameter of the valve body. The retaining ring is installed outside the air outlet of the valve core, and the baffle is installed outside the air inlet of the valve core. When the valve body slides to contact the baffle, the radial air inlet and radial air outlet are located on either side of the intermediate sealing ring and are not interconnected, thus closing the valve. When the valve body slides to contact the retaining ring, the radial air inlet and radial air outlet are located between the sealing ring on the air inlet side of the valve core and the intermediate sealing ring and are interconnected, thus opening the valve.

6. The rapid automatic inflation device for balls according to claim 5, characterized in that: When the valve body slides to contact the baffle, the radial air inlet is located between the sealing ring on one side of the valve core's air inlet end and the middle sealing ring, and the radial air outlet is located between the sealing ring on one side of the valve core's air outlet end and the middle sealing ring. The radial air inlet and the radial air outlet are not connected to each other, and the valve is closed.

7. The rapid automatic inflation device for balls according to claim 5, characterized in that: The radial air inlet and radial air outlet are both multiple and evenly distributed.

8. The rapid automatic inflation device for balls according to claim 5, characterized in that: The retaining ring is detachably snapped into a pre-set groove outside the air outlet end of the valve core, and the baffle is integrally fixed outside the air inlet end of the valve core.

9. A rapid automatic inflation device for balls, characterized in that: It includes at least one rapid automatic inflation device for balls as described in any one of claims 1-8.

Images