Pneumatic cylinder system and barrier valve including the same

Abstract

The present invention discloses a pneumatic cylinder system and a barrier valve including the same. The pneumatic cylinder system includes: a pneumatic outer cover, which forms a hollow internal space; and a pneumatic piston, which divides the internal space into a first space and a second space. The pneumatic piston moves toward the second space or the first space by supplying air pressure to the first space or the second space, and the first space or the second space located in the moving direction of the pneumatic piston is exhausted in advance.

Description

Technical Field

[0001] The invention relates to a pneumatic cylinder system and a barrier valve comprising the same. Background Art

[0002] A pneumatic cylinder is a device that performs specific actions through air pressure. The pneumatic cylinder is controlled by a plurality of valves and can perform up and down actions through the supplied air pressure. The pneumatic cylinder may include a pneumatic housing and a pneumatic piston installed inside the pneumatic housing. The pneumatic piston separates the interior of the pneumatic housing into two independent spaces and is combined with the pneumatic housing in a manner that allows movement inside the pneumatic housing. In the pneumatic cylinder, if air flows into the space on one side of the pneumatic housing, the pneumatic piston can move in the other direction and perform specific actions. Conversely, in the pneumatic cylinder, if air flows into the space on the other side of the pneumatic housing, the pneumatic piston can move in the one direction and perform specific actions. For example, the pneumatic cylinder can move a specific device or structural component combined with the pneumatic piston.

[0003] On the other hand, in the above-mentioned pneumatic cylinder, when the pneumatic piston moves to one side and then moves to the other side again, the air pressure existing in the other side space may affect the process of rapid movement to the other side. That is, in the above-mentioned pneumatic cylinder, in order to increase the movement speed of the pneumatic piston to the other side, it is necessary to minimize the impedance due to the air existing in the other side space of the pneumatic housing.

[0004] Furthermore, as the functions of multiple pneumatic valves are gradually expanded, it is necessary to add a back-pressure blocking function in addition to the conventional blocking function to quickly block the reverse pressure or flow by increasing the blocking speed, that is, a back-pressure blocking function is required. Summary of the invention

[0005] Technical issues

[0006] An object of the present invention is to provide a pneumatic cylinder system in which the moving speed of the pneumatic piston is increased and a blocking valve including the same.

[0007] Technical Solution

[0008] The pneumatic cylinder system of the present invention is characterized in that it includes: a pneumatic outer cover forming a hollow internal space; and a pneumatic piston, which divides the above-mentioned internal space into a first space and a second space, and moves toward the above-mentioned second space or the first space by supplying air pressure to the above-mentioned first space or the second space, and the above-mentioned first space or the second space located in the moving direction of the above-mentioned pneumatic piston is exhausted in advance.

[0009] Furthermore, the pneumatic cylinder system of the present invention is characterized in that it includes: a pneumatic outer cover forming a hollow internal space; a pneumatic piston dividing the above internal space into a first space and a second space, and moving toward the above second space or the first space by the air pressure supplied to the above first space or the second space; and a control module for controlling the air supply and exhaust to the above first space or the second space, and at least two exhaust passages for exhausting the air from the above first space or the above second space are formed.

[0010] The barrier valve of the present invention is characterized in that it includes: a valve main body, which forms a fluid path inside along the direction of fluid flow; a transfer body moving pneumatic cylinder connected to a baffle for temporarily shielding the above-mentioned fluid path, so as to move the transfer body; and a powder inflow prevention cylinder, which shields the moving path of the above-mentioned transfer body in the above-mentioned fluid path, and opens the above-mentioned moving path when the above-mentioned transfer body rotates. The above-mentioned transfer body moving pneumatic cylinder or the above-mentioned powder inflow prevention cylinder is formed by the pneumatic cylinder system mentioned above.

[0011] Effects of the Invention

[0012] The pneumatic cylinder system of the present invention has the effect of removing the air pressure of the internal space of the pneumatic housing located in the moving direction of the pneumatic piston in advance, thereby increasing the moving speed of the pneumatic piston.

[0013] Furthermore, the pneumatic cylinder system of the present invention has the effect of increasing the number of exhaust passages for exhausting air from the internal space of the pneumatic housing in the moving direction of the pneumatic piston or increasing the overall cross-sectional area of ​​the exhaust passages to increase the moving speed of the pneumatic piston.

[0014] Furthermore, the pneumatic cylinder system of the present invention has the effect of removing the air pressure of the internal space of the pneumatic housing located in the moving direction of the pneumatic piston in advance, thereby reducing the initial driving pressure of the pneumatic piston.

[0015] Furthermore, the barrier valve including the pneumatic cylinder system of the present invention has the effect that the pneumatic piston of the pneumatic cylinder moves quickly, and thus the flow of the fluid can be blocked more quickly.

[0016] Furthermore, the barrier valve including the pneumatic cylinder system of the present invention has the following effect, that is, when a back pressure generation signal is generated, the powder inflow prevention ring operated by the pneumatic piston of the pneumatic cylinder system quickly descends, so that the transfer body and the shutter quickly rotate.

[0017] Furthermore, the barrier valve including the pneumatic cylinder system of the present invention has the effect that, when a back pressure generation signal is generated, the transfer body and the shutter operated by the pneumatic cylinder system are rapidly rotated to shield the fluid passage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1a 1 is a structural diagram of a pneumatic cylinder system according to an embodiment of the present invention.

[0019] Figure 1b 2 is a structural diagram of a pneumatic cylinder system according to another embodiment of the present invention.

[0020] Figure 2a 2 is a structural diagram of a pneumatic cylinder system according to another embodiment of the present invention.

[0021] Figure 3a 2 is a structural diagram of a pneumatic cylinder system according to another embodiment of the present invention.

[0022] Figure 3b 2 is a structural diagram of a pneumatic cylinder system according to another embodiment of the present invention.

[0023] Figure 4 It is a three-dimensional diagram of a barrier valve of a pneumatic cylinder system using an embodiment of the present invention.

[0024] Figure 5 for Figure 4 Exploded perspective view of the barrier valve.

[0025] Figure 6 for Figure 4 Vertical cross-sectional view of a barrier valve.

[0026] Figure 7a For application Figure 4 A simplified structural diagram of the pneumatic cylinder of the barrier valve.

[0027] Figure 7b For application Figure 4 A simplified structural diagram of another embodiment of a pneumatic cylinder for an isolation valve.

[0028] Figure 8 To show Figure 4 A vertical cross-sectional view of the barrier valve working in normal state.

[0029] Fig. 9 To show Figure 4 A vertical cross-sectional view of the barrier valve in operation when back pressure occurs. DETAILED DESCRIPTION

[0030] Hereinafter, with reference to the accompanying drawings, a pneumatic cylinder system and a barrier valve including the same according to a preferred embodiment of the present invention will be described in detail.

[0031] First, a pneumatic cylinder system according to an embodiment of the present invention is described.

[0032] Figure 1a 1 is a structural diagram of a pneumatic cylinder system according to an embodiment of the present invention. Figure 1b 2 is a structural diagram of a pneumatic cylinder system according to another embodiment of the present invention.

[0033] Reference Figure 1a The pneumatic cylinder system of one embodiment of the present invention may include a pneumatic cylinder 100 and a control module 200. In the following description, one side direction is the x direction, and the other side direction is the opposite direction of the x direction.

[0034] The pneumatic cylinder 100 may have various structures that utilize air pressure to move an object linearly or rotationally. That is, the pneumatic cylinder 100 may move an object linearly from one side to the other side, or rotationally move an object at a predetermined angle. The pneumatic cylinder 100 may be a general single-acting cylinder or a double-acting cylinder. The following description will focus on the case where the pneumatic cylinder 100 is a double-acting cylinder.

[0035] The pneumatic cylinder 100 may include a pneumatic housing 110 and a pneumatic piston 120. The pneumatic cylinder 100 moves the pneumatic piston 120 from a first position X1 to a second position X2, and moves the pneumatic piston 120 from the second position X2 to the first position X1 again. The first position X1 may be a position where the pneumatic piston 120 moves to one side inside the pneumatic housing 110, and the second position X2 may be a position where the pneumatic piston 120 moves to the other side inside the pneumatic housing 110. When the pneumatic cylinder 100 moves the pneumatic piston 120 from the second position X2 to the first position X1, the air pressure of the internal space on one side of the pneumatic housing 110 is maintained at an atmospheric pressure state, thereby increasing the moving speed of the pneumatic piston 120. In addition, the pneumatic cylinder 100 may reduce the initial driving pressure of the pneumatic piston 120.

[0036] The pneumatic cylinder 100 can increase the moving speed of the pneumatic piston 120 by pre-discharging the air pressure of the internal space in the direction where the pneumatic piston 120 moves relatively quickly to the atmospheric pressure. For example, when the pneumatic piston 120 moves from the second position X2 to the first position X1, the moving speed of the pneumatic cylinder 100 can be increased.

[0037] When the pneumatic cylinder 100 moves from the first position X1 to the second position X2, if the moving speed needs to be increased, the corresponding structure will be located at the corresponding position on the other side. Also, when the pneumatic cylinder 100 moves to the first position X1 and the second position X2, if all moving speeds need to be increased, all required structures can be formed on one side and the other side.

[0038] The pneumatic housing 110 may be in the shape of a hollow cylinder. The pneumatic housing 110 may include a piston hole 111 and a first main hole 112a. In addition, the pneumatic housing 110 may further include a second main hole 112b. In the pneumatic housing 110, the internal space may be divided into a first space 110a located at the first position X1 and a second space 110b located at the second position X2 by the pneumatic piston 120. The first space 110a located in the moving direction of the pneumatic piston 120 is exhausted in advance to maintain the internal pressure of the first space 110a at atmospheric pressure, thereby allowing the pneumatic piston 120 to quickly move from the second position X2 to the first position X1.

[0039] The piston hole 111 is formed through the center of the other side surface of the pneumatic housing 110 from the inside to the outside. The piston hole 111 provides a path required for a part of the pneumatic piston 120 to reciprocate.

[0040] The first main hole 112a may be formed to penetrate from one side outer peripheral surface of the pneumatic housing 110 to the first space 110a of the pneumatic housing 110. The first main hole 112a provides a path for the air required for the pneumatic piston 120 to work to flow into or out of the first space 110a. Therefore, the first main hole 112a may be formed with an appropriate size in consideration of the working pressure and working speed of the pneumatic piston 120. When the pneumatic cylinder 100 moves from the second position X2 to the first position X1, the first main hole 112a may be formed in the case where the speed needs to be increased.

[0041] The second main hole 112b may be formed to penetrate the second space 110b of the pneumatic housing 110 at the outer side of the other side of the outer peripheral surface of the pneumatic housing 110. The second main hole 112b provides a path for the air required for the pneumatic piston 120 to work to flow into or out of the second space 110b. Therefore, the second main hole 112b may be formed with an appropriate size in consideration of the working pressure and working speed of the pneumatic piston 120. When the pneumatic cylinder 100 moves from the first position X1 to the second position X2, the second main hole 112b may be formed in the case where the speed needs to be increased.

[0042] The pneumatic piston 120 may include a piston body 121. The pneumatic piston 120 may include a piston support rod 122. In the pneumatic piston 120, the piston body 121 and a portion of the piston support rod 122 are installed inside the pneumatic housing 110 and move from one side to the other side, so that the object combined with the piston support rod can be reciprocated. Figure 7a and Figure 7b As shown, depending on the structure, the pneumatic piston 120 may not include the piston support rod 122 .

[0043] The piston body 121 may be roughly in the shape of a circular plate, and may be formed with an outer diameter corresponding to the inner diameter of the pneumatic housing 110. The piston body 121 may move inside the pneumatic housing 110 so that the outer peripheral surface faces the inner peripheral surface of the pneumatic housing 110. The piston body 121 may divide the inner space of the pneumatic housing 110 into a first space 110a and a second space 110b. A sealing unit such as an O-ring is installed on the outer peripheral surface of the piston body 121, and the inner peripheral surface of the pneumatic housing 110 is combined with the O-ring in a tightening manner. Therefore, when the piston body 121 reciprocates inside the pneumatic housing 110, air flowing into the first space 110a or the second space 110b will not flow out to the second space 110b or the first space 110a.

[0044] One side of the piston support rod 122 is coupled to the piston body 121 , and the other side thereof passes through the piston hole 111 of the pneumatic housing 110 to extend to the outside.

[0045] The control module 200 may discharge the first space 110a or the second space 110b in advance. In addition, the control module 200 may exhaust both the first space 110a and the second space 110b in advance. For example, after the control module 200 supplies air to the first space 110a of the pneumatic housing 110 to move the pneumatic piston 120 to the other side, the first space 110a is connected to the atmosphere to change it to an atmospheric pressure state. The pneumatic piston 120 may be located at a position to move inside the pneumatic cylinder 100 by the friction force based on the O-ring. Afterwards, the control module 200 may supply air to the second space 110b of the pneumatic housing 110 to move the pneumatic piston 120 to one side. In this case, the first space 110a may be connected to the atmosphere to maintain the atmospheric pressure state, so that the air in the first space 110a may be quickly discharged to the atmosphere. Therefore, the pneumatic piston 120 may move to one side more quickly. In contrast to the above situation, the control module 200 may also be similarly applicable to the case of supplying air to the second space 110 b.

[0046] As described above, the control module 200 may be in various structures for operating the pneumatic piston 120. For example, the control module 200 may include a first main pipe 210a, a first main valve 220a, a first exhaust pipe 230a, a first exhaust valve 240a, a second main pipe 210b, and a second main valve 220b. The first exhaust pipe 230a and the first exhaust valve 240a may be formed when the pneumatic cylinder 100 needs to move quickly from the second position X2 to the first position X1. In addition, the control module 200 may further include a second exhaust pipe 230b and a second exhaust valve 240b. The second exhaust pipe 230b and the second exhaust valve 240b may be formed when the pneumatic cylinder 100 needs to move quickly from the first position X1 to the second position X2.

[0047] In the control module 200, the number of exhaust passages for discharging air from the first space 110a may be plural. In the control module 200, the number of exhaust passages for discharging air from the first space 110a may be greater than the number of supply passages for supplying air to the first space 110a. In this case, the overall cross-sectional area of ​​the exhaust passages may be greater than the overall cross-sectional area of ​​the supply passages. For example, the description will be centered on the case where the pneumatic piston 120 is rapidly moved to the first position X1. In the control module 200, when discharging air from the first space 110a, the first main pipe 210a and at least one first exhaust pipe 230a connected to the first space 110a are both used as exhaust passages. On the contrary, in the control module 200, when supplying air to the first space 110a, only the first main pipe 210a connected to the first space 110a is used as a supply passage. Therefore, the air in the first space 110a is discharged to the first discharge pipe 230a or the second discharge pipe 230b together with the first main pipe 210a, and the pneumatic piston 120 moves quickly. Conversely, the control module 200 is also applicable when air is supplied to the second space 110b.

[0048] The control module 200 may be modularized by a controller. The first main valve 220a, the first discharge valve 240a, the second main valve 220b, and the second discharge valve 240b constituting the control module 200 may be disposed inside a housing. In this case, the first main pipe 210a, the first discharge pipe 230a, the second main pipe 210b, and the second discharge valve 240b may be combined with the first main valve 220a, the first discharge valve 240a, the second main valve 220b, and the second discharge valve 240b, respectively, inside the housing.

[0049] The first main valve 220a and the second main valve 220b may be formed as one body. For example, the first main valve 220a and the second main valve 220b may be one solenoid valve. Also, the first main valve 220a and the first discharge valve 240a may be formed as one body. For example, the first main valve 220a and the first discharge valve 240a may be one solenoid valve. Also, the second main valve 220b and the second discharge valve 240b may be formed as one body. For example, the second main valve 220b and the second discharge valve 240b may be one solenoid valve. Also, the first main valve 220a, the first discharge valve 240a, the second main valve 220b and the second discharge valve 240b may be formed as one body. For example, the first main valve 220a, the first discharge valve 240a, the second main valve 220b and the second discharge valve 240b may be one solenoid valve.

[0050] On the other hand, refer to Figure 1b In another embodiment of the pneumatic cylinder system of the present invention, the control module 200 may include a main valve 220. For example, the main valve 220 may be Figure 1a The main valve 220 is formed by the first main valve 220a and the second main valve 220b. In addition, the first main pipe 210a and the second main pipe 210b can be combined with the main valve 220. In addition, the main valve 220 can be connected to pipes 221, 222, and 223 for supplying or exhausting air required for work. Among them, two pipes 221 and 223 are used to supply or exhaust air to the first main pipe 210a or the second main pipe 210b, and the remaining pipe 222 is additionally used to exhaust the air of the first space 110a or the second space 110b inside the pneumatic housing 110 together with the first exhaust pipe 230a or the second exhaust pipe 230b.

[0051] One end of the first main pipe 210a is connected to the first main hole 112a of the pneumatic housing 110 and communicates with the first space 110a. The first main pipe 210a may be formed with a predetermined diameter to supply an air flow rate for moving the pneumatic piston 120 at a desired speed.

[0052] The first main valve 220a can supply air to the first space 110a, and can open the first main pipe 210a to exhaust air from the first space 110a. For example, the first main valve 220a can be a double-acting solenoid valve. The first main valve 220a is connected to the other end of the first main pipe 210a. The first main valve 220a can form pipes 221a and 222a required for supplying air to the first main pipe 210a or exhausting air from the first main pipe 210a according to the connection relationship with the first main pipe 210a.

[0053] One end of the first discharge pipe 230a is connected to the first main pipe 210a, and the other end is exposed to the atmosphere. The first discharge pipe 230a may be connected to the first main hole 112a and the first main valve 220a of the pneumatic housing 110. The first discharge pipe 230a may be formed as one or at least two, and may be formed as a plurality according to the volume of the first space 110a and the diameter of the pneumatic housing 110.

[0054] The first discharge valve 240a may be coupled to a middle of the first discharge pipe 230a. The first discharge valve 240a may open and close the first discharge pipe 230a to allow the first space 110a to communicate with the atmosphere.

[0055] One end of the second main pipe 210b is connected to the second main hole 112b of the pneumatic housing 110 and communicates with the second space 110b. The second main pipe 210b may be formed with a predetermined diameter to supply an air flow rate for moving the pneumatic piston 120 at a desired speed.

[0056] The second main valve 220b can supply air to the second space 110b, and can open and close the second main pipe 210b to exhaust air from the second space 110b. For example, the second main valve 220b can be a double-acting solenoid valve. The second main valve 220b is connected to the other end of the second main pipe 210b. The second main valve 220b can form pipes 221b and 222b required for supplying air to the second main pipe 210b or exhausting air from the second main pipe 210b according to the connection relationship with the second main pipe 210b.

[0057] One end of the second discharge pipe 230b is connected to the second main pipe 210b, and the other end is exposed to the atmosphere. The second discharge pipe 230b may be connected between the pneumatic housing 110 and the second main valve 220b. At least one second discharge pipe 230b may be formed, and a plurality of second discharge pipes 230b may be formed according to the volume of the second space 110b and the diameter of the pneumatic housing 110.

[0058] The second discharge valve 240b may be coupled to the middle of the second discharge pipe 230b. The second discharge valve 240b may open and close the second discharge pipe 230b to allow the second space 110b to communicate with the atmosphere.

[0059] Next, a working method of the pneumatic cylinder system according to an embodiment of the present invention is described.

[0060] The description will be centered on the process in which the pneumatic piston 120 moves from the first position X1 in one direction to the second position X2 in the other direction and then returns to the first position X1. The description will be centered on the situation in which the pneumatic piston 120 does not need to move quickly when moving from the first position X1 to the second position X2, but moves quickly when moving back to the first position X1.

[0061] First, the first main valve 220a operates to supply air to the first space 110a through the first main pipe 210a. The first exhaust valve 240a is maintained in a closed state. The pneumatic piston 120 moves from the first position X1 to the second position X2 of the pneumatic housing 110 by the air pressure supplied to the first space 110a. The second main valve 220b operates to exhaust the air of the second space 110b to the outside through the second main pipe 210b. Preferably, the second exhaust valve 240b is maintained in a closed state.

[0062] Then, if the pneumatic piston 120 moves to the second position X2, the operation of the first main valve 220a stops. Depending on the situation, after the movement of the pneumatic piston 120 stops, if the movement of the pneumatic piston 120 stabilizes, the first exhaust valve 240a opens and the first space 110a becomes an atmospheric pressure state.

[0063] Next, if the pneumatic piston 120 returns to the first position X1, the second main valve 220b operates to supply air to the second space 110b through the second main pipe 210b. The first exhaust valve 240a is maintained in an open state, and the second exhaust valve 240b is maintained in a closed state. The pneumatic piston 120 moves from the second position X2 to the first position X1 by the air pressure supplied to the second space 110b. In this case, the first space 110a is in an atmospheric pressure state, and the air in the first space 110a is discharged to the atmosphere in advance through the first exhaust valve 240a, so the pneumatic piston 120 can move quickly. Usually, when the pneumatic piston 120 is in the second position X2, the first main valve 220a maintains the first main pipe 210a in a closed state. The first main valve 220a is closed in a state where air is supplied through the first main pipe 210a, so that a pressure state greater than atmospheric pressure can be maintained in the first space 110a. Therefore, in order to move the pneumatic piston 120 to the first position X1, when the first main valve 220a is opened, it takes time for the air supplied to the first space 110a to be discharged to the outside through the first main pipe 210a and the first main valve 220a, and the movement of the pneumatic piston 120 may be delayed.

[0064] Next, a pneumatic cylinder system according to another embodiment of the present invention is described.

[0065] Figure 2a 2 is a structural diagram of a pneumatic cylinder system according to another embodiment of the present invention.

[0066] Reference Figure 2a In a pneumatic cylinder system according to another embodiment of the present invention, a first discharge hole 113a or a second discharge hole 113b may be formed in the pneumatic housing 110, and the first discharge pipe 230a or the second discharge pipe 230b may be directly combined with the first discharge hole 113a or the second discharge hole 113b. The first discharge hole 113a may be formed to penetrate the first space 110a on the outer circumference of the pneumatic housing 110 so as to be connected to the first space 110a of the pneumatic housing 110. The second discharge hole 113b may be formed to penetrate the second space 110b on the outer circumference of the pneumatic housing 110 so as to be connected to the second space 110b of the pneumatic housing 110. The first discharge hole 113a and the second discharge hole 113b may be formed to be connected to the first space 110a and the second space 110b of the pneumatic housing 110 respectively. For example, the first exhaust hole 113a may be formed at one end of the outer circumference of the pneumatic housing 110 or at one side of the pneumatic housing 110 , and the second exhaust hole 113b may be formed at the other end of the outer circumference of the pneumatic housing 110 or at another side of the pneumatic housing 110 .

[0067] Also, the first discharge valve 240a or the second discharge valve 240b may be connected to the first discharge pipe 230a or the second discharge pipe 230b. Therefore, the first discharge pipe 230a and the second discharge pipe 230b are not connected to the first main pipe 210a and the second main pipe 210b.

[0068] In the pneumatic cylinder system, the first discharge hole 113a and the second discharge hole 113b may be formed in plurality and may be spaced apart along the circumferential direction of the pneumatic housing 110. In addition, at least two of the first discharge pipes 230a and the second discharge pipes 230b may be connected to the first discharge hole 113a and the second discharge hole 113b, respectively.

[0069] The diameters of the first and second exhaust holes 113a and 113b may be greater than or equal to the diameters of the first and second main holes 112a and 112b. When the diameters of the first and second exhaust holes 113a and 113b are large, the air in the first and second spaces 110a and 110b may be discharged to the outside more quickly.

[0070] When the pneumatic piston 120 moves from the second position X2 to the first position X1, the pneumatic cylinder system can quickly discharge the air in the first space 110a to the outside through the first main pipe 210a and the first exhaust pipe 230a. Therefore, the pneumatic piston 120 can move to the first position X1 more quickly. That is, when the pneumatic piston 120 moves from the second position X2 to the first position X1, the first exhaust valve 240a will be opened, and the first space 110a maintains the atmospheric pressure state. Therefore, the pneumatic piston 120 can move to the first position X1 more quickly.

[0071] On the other hand, in another embodiment of the pneumatic cylinder system of the present invention, the control module 200 may include a main valve 220. For example, the main valve 220 may be provided by Figure 2a The main valve 220a and the second main valve 220b are formed by a main valve. In addition, the first main pipe 210a and the second main pipe 210b can be combined with the main valve 220. The main valve 220 can be connected to pipes 221, 222, and 223 for supplying or exhausting air required for work. Among them, two pipes 221 and 223 are used to supply or exhaust air to the first main pipe 210a or the second main pipe 210b, and the remaining pipe 222 is additionally used to exhaust the air of the first space 110a or the second space 110b inside the pneumatic housing 110 together with the first exhaust pipe 230a or the second exhaust pipe 230b.

[0072] Next, a pneumatic cylinder system according to another embodiment of the present invention is described.

[0073] Figure 3a 2 is a structural diagram of a pneumatic cylinder system according to another embodiment of the present invention. Figure 3b 2 is a structural diagram of a pneumatic cylinder system according to another embodiment of the present invention.

[0074] Reference Figure 3a , the pneumatic cylinder system of another embodiment of the present invention can be Figure 1a Pneumatic cylinder system with Figure 2a That is, in the above-mentioned pneumatic cylinder system, the first discharge hole 113a or the second discharge hole 113b may be formed in the pneumatic cylinder 100, and the first discharge pipe 230a or the second discharge pipe 230b may be directly combined with the first discharge hole 113a or the second discharge hole 113b. In addition, in the above-mentioned pneumatic cylinder system, the first discharge pipe 230a and the second discharge pipe 230b may also be combined with the first main pipe 210a and the second main pipe 210b.

[0075] In the pneumatic cylinder system, when the pneumatic piston 120 moves from the second position X2 to the first position X1, the air in the first space 110a can be discharged to the outside through the first discharge pipe 230a coupled to the first discharge hole 113a and the first discharge pipe 230a coupled to the first main pipe 210a. Therefore, the pneumatic piston 120 can move to the first position X1 more quickly.

[0076] On the other hand, refer to Figure 3b In another embodiment of the pneumatic cylinder system of the present invention, the control module 200 may include a main valve 220. For example, the main valve 220 may be Figure 3a The main valve 220 is formed by the first main valve 220a and the second main valve 220b. In addition, the first main pipe 210a and the second main pipe 210b can be combined with the main valve 220. In addition, the main valve 220 can be connected to pipes 221, 222, and 223 for supplying or exhausting air required for work. Among them, two pipes 221 and 223 are used to supply or exhaust air to the first main pipe 210a or the second main pipe 210b, and the remaining pipe 222 is additionally used to exhaust the air of the first space 110a or the second space 110b inside the pneumatic housing 110 together with the first exhaust pipe 230a or the second exhaust pipe 230b.

[0077] Next, a barrier valve of a pneumatic cylinder system according to an embodiment of the present invention will be described.

[0078] Figure 4 It is a three-dimensional diagram of a barrier valve of a pneumatic cylinder system using an embodiment of the present invention. Figure 5 for Figure 4 Exploded perspective view of the barrier valve. Figure 6 for Figure 4 Vertical cross-sectional view of a barrier valve. Figure 7a For application Figure 4 A simplified structural diagram of the pneumatic cylinder of the barrier valve. Figure 7b For application Figure 4 A simplified structural diagram of another embodiment of a pneumatic cylinder for an isolation valve. Figure 8 To show Figure 4 A vertical cross-sectional view of the barrier valve working in normal state. Fig. 9 To show Figure 4 A vertical cross-sectional view of the barrier valve in operation when back pressure occurs.

[0079] The following is a specific embodiment of the barrier valve according to an embodiment of the present invention. Figures 4 to 9 The invention will be described with a focus on the sliding back pressure barrier valve. However, the barrier valve of the present invention is not limited to Figures 4 to 9 The sliding back pressure barrier valve can also be used for applications Figures 1a to 3bA pneumatic cylinder system is used to block the flow of fluids such as gas or air when the fluid flows into the blocking valve of various structures.

[0080] Reference Figures 4 to 9 The barrier valve using the pneumatic cylinder system according to an embodiment of the present invention may include a valve body 10 , a transfer body moving pneumatic cylinder 20 , and a powder inflow prevention cylinder 30 .

[0081] Although the above-mentioned transfer body moving pneumatic cylinder 20 and powder inflow prevention cylinder 30 have different specific structures, the working principle of the pneumatic cylinder system of one embodiment of the present invention is applied. Therefore, even though the above-mentioned transfer body moving pneumatic cylinder 20 and powder inflow prevention cylinder 30 have different specific structures, for the sake of understanding, the same pneumatic cylinder system as the above-mentioned pneumatic cylinder system 20 and powder inflow prevention cylinder 30 are described below. Figure 1a The pneumatic cylinder system corresponds to the structure given by Figure 1a Same reference numerals.

[0082] The valve body 10 may be a closed structure in a cylindrical or polygonal cylindrical shape. The valve body 10 may include a fluid inlet 11, an inlet cover 12, a coupling member 13, a side wall 14, an outlet cover 15, and a fluid outlet 16. Figure 6 The valve body 10 has a fluid path 10a formed therein for fluid flow. The valve body 10 also contains a transfer body moving pneumatic cylinder 20 and a powder inflow prevention cylinder 30. Figure 6 The valve body 10 may include a moving path 10b formed in a direction perpendicular to the fluid path, which will be closed when the fluid flows and opened when the transfer body 18a rotates.

[0083] The fluid inlet 11 may have a specified length along the direction in which the fluid flows in. The inlet cover 12 may be formed as one piece with the fluid inlet 11 and have a specified diameter, and may cover the fluid inlet 11. The fluid outflow 16 may have a specified length along the direction in which the fluid flows out. The outflow cover 15 may be formed as one piece with the fluid outflow 16 and have a specified diameter, and may cover the fluid outflow 16. The side wall 14 may form a fluid passing space between the inlet cover 12 and the outflow cover 15. The side wall 14 may be a cylindrical or polygonal cylindrical sealed structure.

[0084] The inflow cover 12 and the upper surface of the side wall 14 formed integrally with the fluid inflow portion 11 can maintain airtightness by a connecting member 13 such as a plurality of bolts. The outflow cover 15 and the lower surface of the side wall 14 formed integrally with the fluid outflow portion 16 can also maintain airtightness by a connecting member 13 such as a plurality of bolts. The valve body 10 of the barrier valve has a structure sealed by such a structure.

[0085] The transfer body moving pneumatic cylinder 20 may be disposed on the upper portion of the valve body 10. The transfer body moving pneumatic cylinder 20 may be located outside the fluid path, and when a back pressure occurs, the transfer body 18a on which the shielding plate 18b is placed is rotated and transferred to the fluid path. The transfer body moving pneumatic cylinder 20 may transfer the transfer body 18a, and the shielding plate 18b transferred together may shield the fluid path. The transfer body 18a may be transferred to the fluid path through the transfer path.

[0086] The above-mentioned transport body moving pneumatic cylinder 20 includes a pneumatic housing 110 and a pneumatic piston 120. Figure 7a As shown, in the pneumatic housing 110, the internal space is divided into a first space 110a and a second space 110b by the pneumatic piston 120. Figure 1a The pneumatic housing 110 of the embodiment is different in shape. The pneumatic housing 110 is roughly quadrilateral and forms a U-shaped air flow path inside. The pneumatic housing 110 can accommodate the rotating shaft 130 inside. The shape of the pneumatic piston 120 is similar to Figure 1a The pneumatic piston 120 of the embodiment is different in shape. The pneumatic piston 120 can be moved to the other side by air supplied to the first space 110a and the second space 110b of the pneumatic housing 110. The pneumatic piston 120 can rotate the gear-coupled rotating shaft 130 within a specified angle during the movement to one side and the other side.

[0087] On the other hand, refer to Figure 7b In consideration of the rotational force required to rotate the rotational shaft 130 , the rotational shaft 130 may be formed as one.

[0088] The control module 200 connected to the first space 110a and the second space 110b controls the inflow of air to make the above-mentioned transfer body moving pneumatic cylinder 20 work. Figure 1a Therefore, the first main pipe 210a and the second main pipe 210b of the control module 200 are connected to the first space 110a and the second space 110b of the pneumatic housing 110, respectively. Figure 2a and Figure 3a However, in this case, the pneumatic housing 110 may be additionally provided with a first exhaust pipe 230a and a first exhaust valve 240a.

[0089] When air is supplied to the first space 110a through the first main pipe 210a, the pneumatic piston 120 moves to one side and rotates the rotating shaft 130 at a predetermined angle. When air is supplied to the second space 110b through the second main pipe 210b, the pneumatic piston 120 moves to the other side and rotates the rotating shaft 130 at a predetermined angle in the opposite direction.

[0090] The rotating shaft 130 may be combined with the transfer body 18a. The transfer body 18a may be placed on the shielding plate 18b. Therefore, when the rotating shaft 130 rotates, the transfer body 18a and the shielding plate 18b placed on the transfer body 18a may rotate together. The transfer body 18a and the shielding plate 18b may be rotated by the rotating shaft 130 to shield the process gas flow path formed by the side wall portion 14 and the pneumatic cover 110.

[0091] The powder inflow prevention cylinder 30 may be disposed on the side of the valve body 10. The powder inflow prevention cylinder 30 includes a pneumatic housing 110 and a pneumatic piston 120. Figure 8 As shown, the shape of the pneumatic cover 110 is similar to Figure 1a The pneumatic housing 110 of the embodiment is different. The pneumatic housing 110 and the pneumatic piston 120 are simply housed to move the pneumatic piston 120, forming a path for the process gas to pass through the barrier valve. The shape of the pneumatic piston 120 is similar to Figure 1a The pneumatic piston 120 of the embodiment is different. The pneumatic piston 120 can be raised or lowered by air supplied to the first space 110a and the second space 110b of the pneumatic housing 110 respectively. The powder inflow prevention cylinder 30 is operated by controlling the inflow of air through the control module 200 connected to the first space 110a and the second space 110b. The control module 200 can be connected to Figure 1a Therefore, the first main pipe 210a and the second main pipe 210b of the control module 200 are connected to the first space 110a and the second space 110b of the pneumatic housing 110, respectively. Figure 2a and Figure 3a However, in this case, the pneumatic housing 110 may be additionally provided with a first exhaust pipe 230a and a first exhaust valve 240a.

[0092] When air is supplied to the first space 110a through the first main pipe 210a, the pneumatic piston 120 rises upward and covers the opening formed along the circumferential direction inside the side wall 14. The barrier valve operates normally so that the process gas flows from the upper part to the lower part. The pneumatic cylinder 100 covers the opening of the side wall 14, so that the process gas does not flow out through the opening.

[0093] The above embodiments of the technical concept of the present invention are described with reference to the accompanying drawings. A person skilled in the art of the present invention can implement the present invention into other specific forms without changing the technical concept or essential features of the present invention. The embodiments described above are illustrative embodiments in all aspects and are not intended to limit the present invention.

[0094] Industrial Applicability

[0095] The pneumatic cylinder system of the present invention has the effect of removing the air pressure of the internal space of the pneumatic housing located in the moving direction of the pneumatic piston in advance, thereby increasing the moving speed of the pneumatic piston.

[0096] Furthermore, the barrier valve including the pneumatic cylinder system of the present invention has the effect that the pneumatic piston of the pneumatic cylinder moves quickly, and thus the flow of the fluid can be blocked more quickly.

Claims

1. A pneumatic cylinder system, characterized in that: include: an aerodynamic housing defining a hollow interior space; and The pneumatic piston divides the internal space into a first space and a second space, and moves toward the second space or the first space by the air pressure supplied to the first space or the second space. The pneumatic cylinder system further includes a control module for pre-exhausting the first space or the second space located in the moving direction of the pneumatic piston. The pneumatic housing is formed with a first main hole penetrating into the first space and a second main hole penetrating into the second space. The pneumatic piston comprises a piston body which divides the inner space of the pneumatic housing into the first space and the second space. The control module includes a first main pipe, a first main valve, a second main pipe and a second main valve, the first main valve is connected to the first main hole, the first main valve is connected to the first main pipe, the second main pipe is connected to the second main hole, and the second main valve is connected to the second main pipe. It also includes a first discharge pipe, a first discharge valve, a second discharge pipe and a second discharge valve, wherein the first discharge pipe is connected to the first space to discharge the air in the first space, the first discharge valve is combined with the first discharge pipe, the second discharge pipe is connected to the second space to discharge the air in the second space, and the second discharge valve is combined with the second discharge pipe. The pneumatic cylinder includes a first discharge hole penetrating into the first space or a second discharge hole penetrating into the second space, the diameters of the first discharge hole and the second discharge hole are larger than the diameters of the first main hole and the second main hole, the first discharge pipe is connected to the first discharge hole, and the second discharge pipe is connected to the second discharge hole. The control module opens in advance a first discharge valve of the first space or a second discharge valve of the second space located in the moving direction of the pneumatic piston to make the first space or the second space become an atmospheric pressure state.

2. The pneumatic cylinder system according to claim 1, characterized in that: The first discharge hole or the second discharge hole is formed in at least two numbers, The first exhaust holes or the second exhaust holes are formed at intervals along the circumferential surface of the pneumatic housing.

3. A barrier valve, characterized in that: include: A valve body portion, forming a fluid path inside along a direction of fluid flow; a transfer body moving pneumatic cylinder connected to a shield for temporarily shielding the fluid path, for moving the transfer body; and The powder inflow prevention cylinder shields the moving path of the transfer body in the fluid path, and opens the moving path when the transfer body rotates. The transfer body moving pneumatic cylinder or the powder inflow prevention cylinder is formed by the pneumatic cylinder system according to claim 1 or 2.

4. The barrier valve according to claim 3, characterized in that: When the fluid path is blocked, the moving speed of the transport body moving pneumatic cylinder is faster.

5. The barrier valve according to claim 3, characterized in that: When the moving path is opened, the moving speed of the powder inflow prevention cylinder becomes faster.

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