Unequal-diameter tandem pneumatic piston mechanism

Abstract

An unequal-diameter tandem pneumatic piston mechanism. A piston rod (2) is slidably fitted in a piston channel. A piston body (11) is sleeved on the upper end of the piston rod (2). A spring (3) is connected to the top of the piston body (11), and a main air intake sealing head (16) is connected to the lower end of the piston rod (2). A sealing cover (6) pressing against the spring (3) is arranged at the top of a piston seat (1), a main air inlet (4) communicated with the piston channel is formed at the bottom of the piston seat (1), and a main air exhaust hole (9) communicated with the piston channel is formed at a lower side portion of the piston seat (1). In the unequal-diameter tandem pneumatic piston mechanism, when compressed air is introduced into the main air inlet, the main air intake sealing head is pushed to move upward, driving the piston rod to move upward, and causing the piston body to move upward to compress the spring, thereby allowing gas to be discharged through the main air exhaust hole; when the introduction of compressed air into the main air inlet is stopped, the piston body is pushed downward under the action of the spring, causing the piston rod to move downward, and driving the main air intake sealing head to seal the main air inlet, thereby enabling the piston to respond accurately, rapidly and stably in a reciprocating manner.

Description

Double pneumatic piston mechanism with unequal diameter Technical Field

[0001] This utility model relates to the field of pneumatic valve technology, specifically to a double pneumatic piston mechanism with unequal diameters. Background Technology

[0002] The solenoid valves used in high-flow, high-speed automated equipment are required to have performance indicators such as high flow rate, high response, and high repeatability to ensure accurate, fast, and reliable operation of the equipment. The key to achieving these requirements is how to realize the rapid suspension action of the piston mechanism.

[0003] Therefore, it is necessary to design a double pneumatic piston mechanism with unequal diameters. Summary of the Invention

[0004] In view of the deficiencies in the prior art, this utility model provides a double pneumatic piston mechanism with unequal diameters.

[0005] The technical solution adopted by this utility model is: a double pneumatic piston mechanism with unequal diameters, including a piston seat, a piston channel provided in the piston seat, a piston rod slidably fitted in the piston channel, a piston body sleeved on the upper end of the piston rod, a spring connected to the top of the piston body, and a main air inlet sealing head connected to the lower end; a sealing cover that presses against the spring is provided on the top of the piston seat, and a main air inlet communicating with the piston channel is provided at the bottom; a main exhaust hole communicating with the piston channel is provided on the lower side of the piston seat.

[0006] To better realize this utility model, a suspended air output pipe communicating with the main air inlet is provided on the lower side of the piston seat. The other end of the suspended air output pipe is connected to the upper part of the piston channel and located above the piston body.

[0007] To better realize this utility model, a vent is provided on the upper part of the piston seat, and the position of the vent corresponds to the position of the piston body.

[0008] To better realize this utility model, a pilot gas source inlet / outlet hole is provided in the middle of the piston seat.

[0009] To better realize this utility model, a piston body suspension sealing ring that cooperates with the piston channel is provided at the upper end of the piston body.

[0010] To better realize this utility model, a piston body drive sealing ring that cooperates with the piston channel is provided at the lower end of the piston body.

[0011] To better realize this utility model, a piston rod sealing seat is provided in the piston channel, and the piston rod passes through the piston rod sealing seat and is fitted with a third sealing ring.

[0012] To better realize this utility model, the piston rod sealing seat is fitted with a fourth sealing ring in conjunction with the piston channel.

[0013] The beneficial effects of this utility model are reflected in the following: The double pneumatic piston mechanism with unequal diameters of this utility model, through the cooperation of piston seat, piston channel, piston rod, piston body, spring, main air intake sealing head, sealing cover, main air intake port and main exhaust port, etc., when compressed air is introduced into the main air intake port, it pushes the main air intake sealing head to move upward, drives the piston rod to move upward, and causes the piston body to move upward, compressing the spring, and the gas is discharged from the main exhaust port; when compressed air is stopped from being introduced into the main air intake port, the spring pushes the piston body downward, causes the piston rod to move downward, and drives the main air intake sealing head to seal the main air intake port. This reciprocating motion achieves accurate, rapid and stable piston response. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 is a structural schematic diagram of one state of the double pneumatic piston mechanism with unequal diameters according to this utility model.

[0016] Figure 2 is a schematic diagram of another state of the double pneumatic piston mechanism with unequal diameters of this utility model.

[0017] In the attached diagram, 1—piston seat, 2—piston rod, 3—spring, 4—main air inlet, 5—suspended air outlet pipe, 6—sealing cap, 7—breathing hole, 8—pilot air source inlet / outlet hole, 9—main exhaust hole, 10—piston body suspension sealing ring, 11—piston body, 12—piston body drive sealing ring, 13—piston rod sealing seat, 14—fourth sealing ring, 15—third sealing ring, 16—main air inlet sealing head. Embodiments of the present invention

[0018] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. The components of the embodiments of this disclosure described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] In the description of this disclosure, it should be noted that the terms "upper," "inner," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the disclosed product is in use. They are only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] In the description of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0022] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0023] Example:

[0024] As shown in Figures 1 and 2, the unequal-diameter double pneumatic piston mechanism of this utility model includes a piston seat 1, a piston channel provided in the piston seat 1, a piston rod 2 slidably fitted in the piston channel, a piston body 11 sleeved on the upper end of the piston rod 2, a spring 3 connected to the top of the piston body 11, and a main air inlet sealing head 16 connected to the lower end; a sealing cover 6 that presses against the spring 3 is provided on the top of the piston seat 1, and a main air inlet 4 communicating with the piston channel is provided at the bottom; a main exhaust hole 9 communicating with the piston channel is provided on the lower side of the piston seat 1. This utility model discloses a double-piston mechanism with unequal diameters. Through the cooperation of piston seat 1, piston channel, piston rod 2, piston body 11, spring 3, main air intake sealing head 16, sealing cover 6, main air intake port 4, and main exhaust port 9, when compressed air is introduced into the main air intake port 4, it pushes the main air intake sealing head 16 upward, causing the piston rod 2 to move upward, and the piston body 11 to move upward, compressing the spring 3, and the gas is discharged from the main exhaust port 9. When compressed air is stopped being introduced into the main air intake port 4, the spring 3 pushes the piston body 11 downward, causing the piston rod 2 to move downward, and the main air intake sealing head 16 to seal the main air intake port 4. This reciprocating motion achieves accurate, rapid, and stable piston response.

[0025] In a preferred embodiment, a suspended air output pipe 5 communicating with the main air inlet 4 is provided on the lower side of the piston seat 1. The other end of the suspended air output pipe 5 is connected to the upper part of the piston channel and is located above the piston body 11. With this design, when compressed air is introduced into the main air inlet 4, it pushes the main air inlet sealing head 16 to move upward, thereby driving the piston rod 2.

[0026] The piston moves upward, causing the piston body 11 to move upward and compress the spring 3, allowing gas to be discharged from the main exhaust port 9. At the same time, part of the compressed gas acts as suspended gas and reaches the top of the piston body 11 through the suspended gas output pipe 5, generating piston thrust. Combined with the action of the spring 3, the double force above the piston body 11 greatly accelerates the speed at which the main intake sealing head 16 closes the main intake port 4, thus improving the response speed and accelerating the reliable closing of the main intake sealing head 16.

[0027] In a preferred embodiment, a vent 7 is provided on the upper part of the piston seat 1, and the position of the vent 7 corresponds to the position of the piston body 11. This design allows for the timely discharge of any small amount of leaked gas between the piston body 11 and the piston channel, ensuring that the piston body 11 is always under normal pressure and improving stability.

[0028] In a preferred embodiment, a pilot air source inlet / outlet port 8 is provided in the middle of the piston seat 1. This design provides better on / off control. When the control air source is connected to the pilot air source inlet / outlet port 8 to input gas, compressed air enters and drives the lower part of the piston body 11, thereby quickly pushing the piston body 11 upward, causing the main air intake sealing head 16 to move upward quickly and opening the main air outlet, thus quickly opening the main air intake port 4. When the external control air source is turned off and the internal air pressure is discharged through the pilot air source inlet / outlet port 8, the piston body 11, under the combined action of the suspended air and the spring 3, quickly pushes the main air intake sealing head 16 downward to close the main air intake port 4.

[0029] In a preferred embodiment, a piston body suspension sealing ring 10 that mates with the piston channel is provided at the upper end of the piston body 11. More preferably, a piston body drive sealing ring 12 that mates with the piston channel is provided at the lower end of the piston body 11. This design provides a better sealing effect and facilitates the rapid and stable movement of the piston rod 2 and the piston body 11.

[0030] In a preferred embodiment, a piston rod sealing seat 13 is provided within the piston channel, through which the piston rod 2 passes and is fitted with a third sealing ring 15. More preferably, the piston rod sealing seat 13 is fitted with a fourth sealing ring 14 within the piston channel. This design prevents leakage of the control gas source and facilitates rapid and smooth movement of the piston body 11.

[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A twin pneumatic piston mechanism of unequal diameters, characterized in that: The utility model relates to a piston type air suspension device, including piston seat (1), be provided with piston channel in the piston seat (1), the piston rod (2) of sliding fit is provided with in piston channel, the piston body (11) is set in the upper end of piston rod (2), the spring (3) is connected in the top of piston body (11), the lower end is connected with main air inlet sealing head (16), the utility model discloses the piston type air suspension device is simple in structure, and the piston body (11) is set in the upper end of piston rod (2), and the spring (3) is connected in the top of piston body (11), and the lower end is connected with main air inlet sealing head (16), the piston seat (1) is provided with the sealing cover (6) of pressing spring (3) in the top, and the bottom is provided with the main air inlet (4) of communication with piston channel, the piston seat (1) is provided with the main exhaust hole (9) of communication with piston channel in the lower part side portion, the piston seat (1) is provided with the suspension gas output pipe (5) of communication with main air inlet (4) in the lower part side portion, and the other end of suspension gas output pipe (5) is connected to the upper portion of piston channel and is located above piston body (11), the piston seat (1) is provided with the breathing hole (7) in the upper portion, and the position of breathing hole (7) corresponds with the position of piston body (11), the piston seat (1) is provided with the pilot gas source inlet and outlet hole (8) in the middle portion, the piston body (11) is provided with the piston body suspension sealing ring (10) of cooperation with piston channel in the upper end, the piston body (11) is provided with the piston body drive sealing ring (12) of cooperation with piston channel in the lower end, the piston channel is provided with the piston rod sealing seat (13) in, and the piston rod (2) passes through the piston rod sealing seat (13) and is provided with the third sealing ring (15) with cooperation, the piston rod sealing seat (13) is provided with the fourth sealing ring (14) with cooperation with piston channel.

2. The unequal diameter dual pneumatic piston mechanism of claim 1, wherein: ​ 3. The unequal diameter dual pneumatic piston mechanism of claim 2, wherein: ​ 4. The unequal diameter dual pneumatic piston mechanism of claim 3, wherein: ​ 5. The unequal diameter dual pneumatic piston mechanism of claim 4, wherein: ​ 6. The unequal diameter dual pneumatic piston mechanism of claim 5, wherein: ​ 7. The unequal diameter dual pneumatic piston mechanism of claim 6, wherein: ​ 8. The unequal diameter dual pneumatic piston mechanism of claim 7, wherein: ​

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