Improved valve body

Abstract

A valve body improvement structure is provided for combining a cylinder and a gas reservoir, and comprises a valve body, a bus plate, a valve core assembly and a valve core spring assembly. Through installation of the valve core spring assembly, the cylinder and the gas reservoir can be controlled and continuously maintained under the condition of the set minimum gas supply pressure. The valve core spring assembly can change the tension generated by the spring according to the gas source pressure provided by the gas pressure source, so that when the gas pressure supplied to the air inlet and the gas reservoir is higher than the tension of the spring, the system is in normal operation mode; when the cylinder enters the safety return mode, the gas pressure provided by the gas reservoir will ensure that the minimum pressure is reached, thereby ensuring the torque during fault protection. The utility model can correspond to various field pipeline gas pressure sources, and improve the convenience of use.

Description

Technical Field

[0001] This utility model relates to a valve body structure, specifically a valve core spring assembly for a valve body in a pneumatic device. The valve body can be used in conjunction with a cylinder and an air storage chamber to allow the cylinder to return to a preset fault protection position in a fault state. The valve core spring assembly gives the pneumatic device higher controllability, thereby enabling more effective control of fault risks. Background Technology

[0002] A typical pneumatic device includes a valve body, which can be used in conjunction with a cylinder and an air storage chamber. Pneumatic devices are usually equipped with a fail-safe system. In an emergency, when the air supply is interrupted or depleted, the valve body can be opened or closed by the gas stored in the cylinder to ensure safe use (as in the applicant's previously published and approved patents: Taiwan Patent No. TWM514532 and US Patent No. US9,546,737B1).

[0003] However, the torque that the gas chamber of the aforementioned cylinder can generate during fault protection depends on the specified gas supply pressure. If the cylinder is mistakenly installed in a system with a gas supply pressure lower than the specified pressure, the fault protection torque will be less than the original design value, which may prevent the system from returning to its fault protection position, resulting in component failure or damage.

[0004] In view of this, based on the author's many years of experience in manufacturing, developing and designing related products, and after detailed design and careful evaluation for the above objectives, the author has finally come up with a practical utility model. Summary of the Invention

[0005] The purpose of this utility model is to provide an improved valve body structure, which is simple in structure, easy to operate, effectively overcomes the defects of the prior art, has higher controllability, effectively controls the risk of failure, improves safety performance, can adapt to the air pressure source of various field pipelines, and improves the convenience of use.

[0006] To achieve the above objectives, this utility model discloses an improved valve body structure, characterized by comprising:

[0007] A valve body is provided with a first internal air passage, a second internal air passage and a valve core channel that run through its entire long side. The first internal air passage is connected to the second internal air passage through a one-way valve. The valve body is provided with an air inlet, a first through hole, a second through hole, a first air outlet and a second air outlet on its periphery. The air inlet is connected to the first internal air passage, and the first through hole, the second through hole, the first air outlet and the second air outlet are respectively connected to the valve core channel.

[0008] A manifold, the manifold having a first connecting pipe and a second connecting pipe, the first connecting pipe being connected to the second connecting pipe and the first connecting pipe being connected to the first internal air passage, and the second connecting pipe being connected to the valve core passage.

[0009] A valve core assembly is disposed within a valve core channel. The valve core assembly includes a piston shaft and a valve core push rod, with the piston shaft assembling the valve core push rod.

[0010] A valve core spring assembly includes a pressure plate, an adjusting bolt, and a spring. The pressure plate is located below the valve body and has a threaded hole in its center. The adjusting bolt has a threaded portion that is screwed into the threaded hole. One end of the spring is housed in the piston shaft, and the other end abuts against the end face of the threaded portion. When the air pressure supplied to the air inlet is greater than the tension of the spring in the valve core spring assembly, the valve core assembly is in a normal operating mode. When the air pressure supplied to the air inlet is less than the tension of the spring in the valve core spring assembly, the valve core assembly is in a safe return mode.

[0011] The second internal air passage is connected to an air chamber outlet and a relay air passage on the side, and the relay air passage is connected to the valve core passage.

[0012] The piston shaft has a central end, an upper end, and a lower end. The two ends of the central end are connected to the upper end and the lower end by a flow channel, and the valve core push rod is assembled at the upper end.

[0013] The adjusting bolt also has a connecting part, which is connected to one end of the threaded part and is fitted onto the other end of the spring.

[0014] The air inlet is connected to a pressure source so that the gas released by the pressure source enters the valve body through the air inlet.

[0015] The one-way valve is fitted with an elastic element.

[0016] The busbar is a flat plate structure.

[0017] With the above structure, the improved valve body structure of this utility model, through the installation of a valve core spring assembly, enables the cylinder and the air reservoir to operate under the set minimum air supply pressure. The valve core spring assembly can be adjusted by turning the adjusting bolt according to the air pressure provided by the air pressure source, so that the end edge of the threaded part can push against or relax the spring, thereby changing the tension generated by the spring. This ensures that when the air pressure supplied to the air inlet and the air reservoir is higher than the spring tension, the system is in normal operating mode. When the cylinder enters the safety return mode, the air pressure provided by the air reservoir will ensure that the minimum pressure is reached, thereby ensuring the torque during fault protection. This provides higher controllability, effectively controls the risk of failure, improves safety performance, and can adapt to the air pressure source of various pipelines in different fields, thus improving ease of use. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention.

[0019] Figure 2 This is an exploded view of the present invention.

[0020] Figure 3 This is a perspective view of the present invention.

[0021] Figure 4 This is a perspective view of the present invention from another angle.

[0022] Figure 5 This is a perspective view of the present invention combined with a cylinder.

[0023] Figure 6 This is a perspective view of the cylinder of this utility model.

[0024] Figure 7 This is a perspective view of the present invention in normal operating mode.

[0025] Figure 8 This is a perspective view of the present invention in the safe reset mode.

[0026] Figure 9 This is a schematic diagram of the operation of the cylinder in normal operating mode.

[0027] Figure 10 This is a schematic diagram of the operation of the cylinder in the safe return mode of this utility model. Detailed Implementation

[0028] Please see Figures 1 to 4 As shown, this utility model discloses an improved valve body structure 100, which includes:

[0029] A valve body 10 has a first internal air passage 11, a second internal air passage 12, and a valve core channel 13 extending along its entire long side. The first internal air passage 11 is connected to the second internal air passage 12 through a one-way valve 111. The one-way valve 111 is fitted with an elastic element 112. The second internal air passage 12 is connected on its side to an air chamber outlet 121 and a relay air passage 122. The relay air passage 122 is connected to the valve core channel 13. The body 10 is provided with an air inlet 14, a first through hole 15, a second through hole 16, a first air outlet 17 and a second air outlet 18 on its periphery. The air inlet 14 is connected to the first internal air passage 11 and can be connected to a pressure source 50 so that the gas released by the pressure source 50 enters the valve body 10 through the air inlet 14. The first through hole 15, the second through hole 16, the first air outlet 17 and the second air outlet 18 are respectively connected to the valve core channel 13.

[0030] In this embodiment of the utility model, the manifold 20 is a flat plate structure. The manifold 20 is provided with a first connecting pipe 21 and a second connecting pipe 22. The first connecting pipe 21 is connected to the second connecting pipe 22 and is connected to the first internal air passage 11. The second connecting pipe 22 is connected to the valve core passage 13.

[0031] A valve core assembly 30 is disposed within the valve core channel 13. The valve core assembly 30 includes a piston shaft 31 and a valve core push rod 32. The piston shaft 31 has a central end 311, an upper end 312 and a lower end 313. The two ends of the central end 311 are connected to the upper end 312 and the lower end 313 by a flow channel 314, respectively. The valve core push rod 32 is assembled at the upper end 312.

[0032] A valve core spring assembly 40, see attached. Figure 7 The valve core spring assembly 40 includes a pressure plate 41, an adjusting bolt 42, and a spring 43. The pressure plate 41 is located below the valve body 10, and a threaded hole 411 is provided in the center of the pressure plate 41. The adjusting bolt 42 has a threaded portion 421 and a connecting portion 422. The threaded portion 421 is screwed into the threaded hole 411, and the connecting portion 422 is connected to one end of the threaded portion 421. One end of the spring 43 is housed in the lower end 313 of the piston shaft 31, and the other end is sleeved on the connecting portion 422 and abuts against the end face of the threaded portion 421.

[0033] Specifically, when the air pressure supplied by the air pressure source 50 to the air inlet 14 is greater than the tension of the spring 43 of the valve core spring assembly 40, the valve core assembly 30 is in a normal operating mode, and when the air pressure supplied by the air pressure source 50 to the air inlet 14 is less than the tension of the spring 43 of the valve core spring assembly 40, the valve core assembly 30 is in a safe return mode.

[0034] See Figure 7 and Figure 9 and paired Figure 5 , Figure 6 The improved valve body structure 100 of this utility model is combined with a cylinder 200. When the valve core assembly 30 is in the normal operating mode, the gas released by the air pressure source 50 enters the valve body 10 through the air inlet 14, and then flows to the first internal air passage 11 and the one-way valve 111 respectively. The gas passing through the first internal air passage 11 flows upward through the first connecting pipe 21 and the second connecting pipe 22 of the manifold 20, and smoothly enters the valve body 10. The valve core passage 13 provides a downward thrust to the valve core push rod 32 and the piston shaft 31, compressing the spring 43. At this time, the central end 311 of the piston shaft 31 separates the first through hole 15 and the second through hole 16. On the other hand, the gas passing through the one-way valve 111 directly enters the second internal air passage 12. When the gas flows to the relay air passage 122 and the air chamber outlet 121, the gas system flowing through the air chamber outlet 121 will pass through the cylinder. A first vent 201 of cylinder 200 stores gas in a gas storage chamber 202 on one side of cylinder 200, and then transmits the gas to another gas storage chamber 202 of cylinder 200 through a connecting pipe 203. Gas flowing through the relay gas passage 122 passes through the gap reserved in the flow channel 314 and enters the first through hole 15, flowing to a second vent 204 of cylinder 200. A piston 205, respectively arranged on the left and right sides inside cylinder 200, applies gas... The pressure will push the valve body open in opposite directions, causing an actuating gear 206 on each piston 205 to drive a gear shaft 207 to rotate counterclockwise, thus opening the valve body. The piston 205 is pushed against the gas inside the first accommodating space 209 located on the left and right sides of the cylinder 200, so that the gas inside each first accommodating space 209 enters the second through hole 16 of the valve body 10 through a third air hole 208, and is discharged through the second air outlet 18.

[0035] Continue reading Figure 8 and Figure 10 and paired Figure 5 , Figure 6The improved valve body structure 100 of this utility model is combined with the cylinder 200. When the valve core assembly 30 is in the safe return mode, the gas released by the air pressure source 50 enters the valve body 10 through the air inlet 14 and flows to the first internal air passage 11 and the one-way valve 111 respectively. The gas through the first internal air passage 11 flows upward through the first connecting pipe 21 and the second connecting pipe 22. However, because the gas pressure is less than the tension of the spring 43 of the valve core spring assembly 40, it cannot push the valve core push rod 32 and the piston shaft 31. Therefore, the gas is insufficient to enter the valve core channel 13 through the second connecting pipe 22 and thus stagnates. On the other hand, the gas through the one-way valve 111 directly enters the second internal air passage 12. When the gas flows to the... When the relay air passage 122 is connected to the air chamber outlet 121, the gas flowing through the air chamber outlet 121 will enter the first air hole 201 of the cylinder 200 and be stored in the air storage chambers 202 on both sides of the cylinder 200. The gas flowing through the relay air passage 122 will pass through the gap reserved in the flow channel 314 and enter the second through hole 16, flowing to the first accommodating space 209 on both sides of the cylinder 200. At this time, the gas saturation will cause the pistons 205 on both sides to move towards each other and drive the actuating gear 206 to rotate the gear shaft 207 clockwise to close the valve body. The gas inside the second accommodating space 210 is pushed through the first pipe 211 towards the second air hole 204 and enters the first through hole 15 of the valve body 10, and is discharged through the first air outlet 17.

[0036] Therefore, by installing the valve core spring assembly 40, the cylinder 200 and the air chamber 202 can be controlled and continuously maintained to operate under the set minimum air supply pressure. The valve core spring assembly 40 can adjust the tension of the spring 43 by turning the adjusting bolt 42 according to the air pressure provided by the air pressure source 50, so that the end edge of the threaded part 421 can push against or relax the spring 43. This changes the tension of the spring 43 so that when the air pressure supplied to the air inlet 14 and the air chamber 202 is higher than the tension of the spring 43, the system is in normal operation mode. When the cylinder 200 enters the safety return mode, the air pressure provided by the air chamber 202 will be guaranteed to reach the minimum pressure, thereby ensuring the torque during fault protection. This invention can adapt to the air pressure source of various fields and pipelines, improving the convenience of use.

Claims

1. An improved valve body structure, characterized in that... Includes: A valve body is provided with a first internal air passage, a second internal air passage and a valve core channel that run through its entire long side. The first internal air passage is connected to the second internal air passage through a one-way valve. The valve body is provided with an air inlet, a first through hole, a second through hole, a first air outlet and a second air outlet on its periphery. The air inlet is connected to the first internal air passage, and the first through hole, the second through hole, the first air outlet and the second air outlet are respectively connected to the valve core channel. A manifold, the manifold having a first connecting pipe and a second connecting pipe, the first connecting pipe being connected to the second connecting pipe and the first connecting pipe being connected to the first internal air passage, and the second connecting pipe being connected to the valve core passage. A valve core assembly is disposed within a valve core channel. The valve core assembly includes a piston shaft and a valve core push rod, with the piston shaft assembling the valve core push rod. A valve core spring assembly includes a pressure plate, an adjusting bolt, and a spring. The pressure plate is located below the valve body and has a threaded hole in its center. The adjusting bolt has a threaded portion that is screwed into the threaded hole. One end of the spring is housed in the piston shaft, and the other end abuts against the end face of the threaded portion. When the air pressure supplied to the air inlet is greater than the tension of the spring in the valve core spring assembly, the valve core assembly is in a normal operating mode. When the air pressure supplied to the air inlet is less than the tension of the spring in the valve core spring assembly, the valve core assembly is in a safe return mode.

2. The improved valve body structure as described in claim 1, characterized in that, The second internal air passage is connected to an air chamber outlet and a relay air passage on the side, and the relay air passage is connected to the valve core channel.

3. The improved valve body structure as described in claim 1, characterized in that, The piston shaft has a central end, an upper end, and a lower end. The two ends of the central end are connected to the upper end and the lower end by a flow channel, respectively. The valve core push rod is assembled at the upper end.

4. The improved valve body structure as described in claim 1, characterized in that, The adjusting bolt also has a connecting portion that is connected to one end of the threaded portion and is fitted onto the other end of the spring.

5. The improved valve body structure as described in claim 1, characterized in that, The air inlet is connected to a pressure source so that the gas released by the pressure source enters the valve body through the air inlet.

6. The improved valve body structure as described in claim 1, characterized in that, The one-way valve is fitted with an elastic element.

7. The improved valve body structure as described in claim 1, characterized in that, The busbar is a flat plate structure.

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