Bidirectional driving device for valve

Abstract

A bi-directional driving device for a valve is mainly characterized in that a pneumatic shaft sleeve capable of lifting up and down, a shaft rod located in the pneumatic shaft sleeve and capable of moving front and back and at least one transverse piston capable of moving front and back are arranged in a body, the transverse piston is connected to the shaft rod, and a first air channel is used for feeding air to push the pneumatic shaft sleeve to ascend. A second air channel is connected with the first air channel so that air can enter the first air channel to push the transverse piston to move forwards, and the shaft rod is driven to ascend and move transversely. A third air channel is used for feeding air to push the transverse piston to move backwards, a fourth air channel is connected with the third air channel so that air can enter the third air channel to push the pneumatic shaft sleeve to descend, and the shaft rod is driven to transversely retreat and descend.

Description

Technical Field

[0001] The present invention relates to a gate valve, and in particular to a two-way driving device used for a valve member. Background Art

[0002] Taiwan Patent No. I503914 discloses a two-way valve, which mainly utilizes a first driving unit to operate a first operating body, and utilizes a second driving unit to operate a second operating body, so as to cause its push-pull module to move to the left or right, thereby enabling the first sealing plate or the second sealing plate to selectively seal the two inlets.

[0003] The mechanism of the aforementioned case is complex, with numerous parts and is difficult to assemble, and the accuracy of its operation is also low.

[0004] Patent No. I730808 of Taiwan, China, discloses a two-way moving valve driving device, which mainly utilizes two piston rods in conjunction with two flow channels to form the pushing and retracting actions, and cooperates with two guide rods and the valve cylinder piston rod to provide the two-way moving effect.

[0005] Although the mechanism of the aforementioned case is relatively simple, the design of only two flow paths sometimes makes the advancement and retraction movements jammed and unsmooth, so there is still room for improvement. Summary of the invention

[0006] The main purpose of the present invention is to provide a two-way driving device for a valve member, which can effectively drive the valve member in two directions without causing any jamming problem.

[0007] Another object of the present invention is to provide a two-way driving device for a valve member, which first rises and then moves horizontally when advancing the valve member, and first moves horizontally and then descends when retracting the valve member, thereby ensuring that the valve member can move in sequence.

[0008] In order to achieve the above-mentioned purpose, the present invention proposes a two-way drive device for valve components, comprising: a main body, having a vertical channel extending up and down, at least one horizontal piston chamber extending front and back, and at least one auxiliary piston chamber extending up and down, the vertical channel is surrounded by a vertical channel wall, the at least one horizontal piston chamber has a horizontal piston that can move between a forward position and a backward position, the main body also has a sub-channel extending front and back and connected to the at least one horizontal piston chamber, and a sub-sealing ring is provided in the sub-channel, the horizontal piston has a sub-piston extending from the rear end of the sub-channel and is sleeved by the sub-sealing ring so as to slidably pass through, and the vertical channel wall is provided with a lower sealing ring; a pneumatic sleeve is located in the vertical channel and is slidably sleeved on the lower sealing ring, the pneumatic sleeve The interior is hollow and elongated, and can move between a highest position and a lowest position. A gap is formed between the pneumatic sleeve and the wall of the vertical channel for gas to enter. The pneumatic sleeve has a middle sealing ring arranged in an annular manner on the pneumatic sleeve and abuts against the wall of the vertical channel. The middle sealing ring is higher than the lower sealing ring. The pneumatic sleeve also has at least one auxiliary piston extending from bottom to top into the at least one auxiliary piston cavity; a shaft rod, which is partially placed in the pneumatic sleeve and can move back and forth, and rise or fall with the pneumatic sleeve. The shaft rod has an exposed section exposed above the pneumatic sleeve and the main body; a transverse block, which is fixed to the transverse piston in the at least one transverse piston cavity and can move back and forth in the main body with the transverse piston. The shaft rod can move up and down through the transverse block. and moves forward and backward with the transverse displacement block; a first air channel is provided in the main body, one end of the first air channel is defined as the outer end and is connected to the outside of the main body, and the other end is defined as the inner end and is connected to the vertical channel. When the pneumatic sleeve is located at the lowest position, the inner end of the first air channel is lower than the middle sealing ring; a second air channel is provided in the main body, one end of the second air channel is defined as the lower end and is connected to the vertical channel, and the lower end of the second air channel is lower than the lower sealing ring, and the other end of the second air channel is defined as the upper end and is connected to the space between the rear of the transverse piston in the at least one transverse piston cavity and the main body; a third air channel is provided in the main body, one end of the third air channel is defined as the front end and is connected to the front of the transverse piston in the at least one transverse piston cavity and the space between the main body. a space between the second and third air passages, the other end of the third air passage being defined as an outer end and being connected to the outside of the main body; a fourth air passage being provided in the main body, one end of the fourth air passage being defined as an upper end and being connected to the front end of the sub-channel, the other end of the fourth air passage being defined as a lower end and being connected to the at least one auxiliary piston chamber, and when the pneumatic sleeve is located at the highest position, the lower end of the fourth air passage is higher than the at least one auxiliary piston; and a pressure relief valve being provided in the main body and being connected to the second air passage and the outside of the main body; wherein the pneumatic sleeve has a trigger groove concave from the outside to the inside, and when the pneumatic sleeve is located at the highest position, the trigger groove is spatially connected to the gap above the lower sealing ring and the space below the lower sealing ring, and further connected to the lower end of the second air passage;Wherein, the sub-piston has a sub-triggering groove concave from the outside to the inside, and when the transverse piston in the at least one transverse piston cavity is in the retreated position, the sub-triggering groove spatially connects the at least one transverse piston cavity behind the sub-sealing ring and the upper end of the fourth air channel. ;

[0009] The above-mentioned two-way driving device used for valve components, wherein: the vertical channel wall has an upper shoulder protruding inwardly, and a bottom sealing ring is provided below the lower sealing ring; the pneumatic sleeve has an upper abutment protruding outwardly and located in the gap.

[0010] The above-mentioned two-way driving device for valve components, wherein: when the pneumatic sleeve is located at the lowest position, the inner end of the first air channel is lower than the middle sealing ring and higher than the lower sealing ring.

[0011] The above-mentioned two-way driving device for a valve member, wherein: the lower end of the second air passage is lower than the lower sealing ring but higher than the bottom sealing ring.

[0012] The above-mentioned two-way driving device for valve components, wherein: a limit rod is fixedly arranged in the pneumatic sleeve, the shaft rod is movably passed through by the limit rod, and can move forward and backward along the limit rod in the pneumatic sleeve, and the shaft rod is also acted upon by the limit rod to rise or fall with the pneumatic sleeve.

[0013] The above-mentioned two-way driving device used for valve components, wherein: the at least one transverse piston chamber is two in number and is respectively located on both sides of the shaft rod, each of the two transverse piston chambers has a transverse piston, and the second air channel and the third air channel are both branched and connected to the two transverse piston chambers.

[0014] The two-way driving device used for the valve element, wherein: one of the two transverse piston chambers has the sub-channel, and one of the two transverse pistons has the sub-piston.

[0015] The above-mentioned two-way driving device used for valve components, wherein: the pressure relief valve has a touch piece, the touch piece is connected to the transverse piston in the at least one transverse piston cavity and moves forward and backward with the transverse piston, when the transverse piston is located at the forward position, the touch piece does not touch the pressure relief valve and the pressure relief valve is closed, and the second air channel is not connected to the outside of the body; when the transverse piston is located at the backward position, the touch piece touches the pressure relief valve to open the pressure relief valve, and when the pressure relief valve is opened, the second air channel is connected to the outside of the body.

[0016] By means of the above technical contents, the present invention can surely complete the action of driving the external valve member in two directions without any jamming problem. In addition, when the valve member is pushed forward, it first rises and then moves horizontally, and when the valve member is retracted, it first moves horizontally and then descends, so that the actions can be surely carried out in sequence.

[0017] In addition, the at least one auxiliary piston chamber and the at least one auxiliary piston may not be provided, and the lower end of the fourth air passage may be connected to the vertical passage instead, and when the pneumatic sleeve is at the highest position, the lower end of the fourth air passage is higher than the middle sealing ring. In this way, the aforementioned effect can also be achieved.

[0018] In order to achieve the above-mentioned purpose, the present invention also proposes a two-way drive device for use in valve components, comprising: a main body, having a vertical channel extending up and down and at least one horizontal piston chamber extending front and back, the vertical channel having a vertical channel wall around it, the at least one horizontal piston chamber having a horizontal piston movable between a forward position and a backward position, the main body also having a sub-channel extending front and back connected to the at least one horizontal piston chamber, and a sub-sealing ring being provided in the sub-channel, the horizontal piston having a sub-piston extending from the front end of the sub-channel and being sleeved by the sub-sealing ring and slidably passing therethrough, the vertical channel wall being provided with a lower sealing ring; a pneumatic sleeve being located in the vertical channel and slidably sleeved on the lower sealing ring, the pneumatic sleeve The interior is hollow and elongated, and can move between a highest position and a lowest position. A gap is formed between the pneumatic sleeve and the wall of the vertical channel for gas to enter. The pneumatic sleeve has a middle sealing ring arranged around the pneumatic sleeve and abutting against the wall of the vertical channel, and the middle sealing ring is higher than the lower sealing ring; a shaft rod, which is partially placed in the pneumatic sleeve and can move forward and backward, and rise or fall with the pneumatic sleeve, and the shaft rod has an exposed section exposed above the pneumatic sleeve and the main body; a transverse block, which is fixed to the transverse piston in the at least one transverse piston cavity and can move forward and backward in the main body with the transverse piston, and the shaft rod can move up and down through the transverse block and move forward and backward with the transverse block; a first air channel, set In the body, one end of the first air channel is defined as an outer end and is connected to the outside of the body, and the other end is defined as an inner end and is connected to the vertical channel. When the pneumatic sleeve is located at the lowest position, the inner end of the first air channel is lower than the middle sealing ring; a second air channel is provided in the body, one end of the second air channel is defined as a lower end and is connected to the vertical channel, and the lower end of the second air channel is lower than the lower sealing ring, and the other end of the second air channel is defined as an upper end and is connected to the space between the rear of the transverse piston in the at least one transverse piston cavity and the body; a third air channel is provided in the body, one end of the third air channel is defined as a front end and is connected to the space between the front of the transverse piston in the at least one transverse piston cavity and the body, and the third air channel is defined as a front end and is connected to the space between the front of the transverse piston in the at least one transverse piston cavity and the body. The other end of the three air channels is defined as an outer end and is connected to the outside of the body; a fourth air channel is provided in the body, one end of the fourth air channel is defined as an upper end and is connected to the front end of the sub-channel, and the other end of the fourth air channel is defined as a lower end and is connected to the vertical channel. When the pneumatic sleeve is at the highest position, the lower end of the fourth air channel is higher than the middle sealing ring; and a pressure relief valve is provided in the body and is connected to the second air channel and the outside of the body; wherein the pneumatic sleeve has a trigger groove concave from the outside to the inside, and when the pneumatic sleeve is at the highest position, the trigger groove is spatially connected to the gap above the lower sealing ring and the space below the lower sealing ring, thereby connecting to the lower end of the second air channel;Wherein, the sub-piston has a sub-triggering groove concave from the outside to the inside, and when the transverse piston in the at least one transverse piston cavity is in the forward position, the sub-triggering groove spatially connects the at least one transverse piston cavity behind the sub-sealing ring and the upper end of the fourth air channel. ;

[0019] The above-mentioned two-way driving device used for valve components, wherein: the vertical channel wall has an upper shoulder protruding inwardly and a lower shoulder located below the upper shoulder, and the vertical channel wall is provided with an upper sealing ring located above the upper shoulder, and a bottom sealing ring located below the lower sealing ring, and the lower sealing ring is located below the lower shoulder, and the upper sealing ring and the bottom sealing ring keep the air in the gap from leaking out of the body; the pneumatic sleeve has an upper abutment and a lower abutment protruding outwardly and located in the gap.

[0020] The above-mentioned two-way driving device for valve components, wherein: when the pneumatic sleeve is located at the lowest position, the inner end of the first air channel is lower than the middle sealing ring and higher than the lower sealing ring.

[0021] The above-mentioned two-way driving device for a valve member, wherein: the lower end of the second air passage is lower than the lower sealing ring but higher than the bottom sealing ring.

[0022] The above-mentioned two-way driving device for valve components, wherein: when the pneumatic sleeve is located at the highest position, the lower end of the fourth air channel is higher than the middle sealing ring and lower than the upper sealing ring.

[0023] The above-mentioned two-way driving device for valve components, wherein: a limit rod is fixedly arranged in the pneumatic sleeve, the shaft rod is movably passed through by the limit rod, and can move forward and backward along the limit rod in the pneumatic sleeve, and the shaft rod is also acted upon by the limit rod to rise or fall with the pneumatic sleeve.

[0024] The above-mentioned two-way driving device used for valve components, wherein: the at least one transverse piston chamber is two in number and is respectively located on both sides of the shaft rod, each of the two transverse piston chambers has a transverse piston, and the second air channel and the third air channel are both branched and connected to the two transverse piston chambers.

[0025] The two-way driving device used for the valve element, wherein: one of the two transverse piston chambers has the sub-channel, and one of the two transverse pistons has the sub-piston.

[0026] The above-mentioned two-way driving device used for valve components, wherein: the pressure relief valve has a touch piece, the touch piece is connected to the transverse piston in the at least one transverse piston cavity and moves forward and backward with the transverse piston, when the transverse piston is located at the forward position, the touch piece does not touch the pressure relief valve and the pressure relief valve is closed, and the second air channel is not connected to the outside of the body; when the transverse piston is located at the backward position, the touch piece touches the pressure relief valve to open the pressure relief valve, and when the pressure relief valve is opened, the second air channel is connected to the outside of the body.

[0027] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional diagram of a first preferred embodiment of the present invention.

[0029] Figure 2 It is a perspective schematic diagram of a first preferred embodiment of the present invention.

[0030] Figure 3 For along Figure 1 Sectional view along line 3-3.

[0031] Figure 4 It is a partial perspective schematic diagram of a first preferred embodiment of the present invention, showing a first airway.

[0032] Figure 5 It is a partial perspective schematic diagram of the first preferred embodiment of the present invention, showing the second airway.

[0033] Figure 6 It is a partial perspective schematic diagram of the first preferred embodiment of the present invention, showing the third airway.

[0034] Figure 7 It is a partial perspective schematic diagram of the first preferred embodiment of the present invention, showing the fourth airway.

[0035] Figure 8 For along Figure 1 Sectional view along line 8-8.

[0036] Fig. 9 For along Figure 1 Sectional view along line 9-9.

[0037] Fig.10 It is a schematic diagram of the operation of the first preferred embodiment of the present invention.

[0038] Fig.11 For along Fig.10 Sectional view along line 11-11.

[0039] Fig.12 For along Fig.10Sectional view along line 12-12.

[0040] Fig.13 For along Fig.10 Sectional view along line 13-13.

[0041] Fig.14 For similar Fig.12 Schematic diagram of the action.

[0042] Fig.15 For similar Fig.13 Schematic diagram of the action.

[0043] Fig.16 For along Figure 3 Sectional view along line 16-16.

[0044] Fig.17 For similar Fig.16 Schematic diagram of the action.

[0045] Fig.18 It is a cross-sectional schematic diagram of a second preferred embodiment of the present invention.

[0046] Fig.19 For along Fig.18 Sectional view of 19-19.

[0047] Fig. 20 FIG. 4 is an action diagram of the second preferred embodiment of the present invention.

[0048] Fig.21 It is a partial cross-sectional schematic diagram of the second preferred embodiment of the present invention, and the cross-sectional position is similar to Fig.11 .

[0049] Wherein, the reference numerals are:

[0050] 10: Two-way drive device for valve parts

[0051] 11:Ontology

[0052] 12: Vertical channel

[0053] 121: Vertical channel wall

[0054] 123: Upper shoulder

[0055] 14: Transverse piston chamber

[0056] 141: Subchannel

[0057] 142: Sub-sealing ring

[0058] 15: Transverse piston

[0059] 151: Sub-piston

[0060] 152: Sub-trigger slot

[0061] 16: Auxiliary piston chamber

[0062] 191: Lower sealing ring

[0063] 192: Bottom sealing ring

[0064] 21: Pneumatic sleeve

[0065] 211: Trigger slot

[0066] 22: Gap

[0067] 24: Middle sealing ring

[0068] 26: Auxiliary piston

[0069] 28: Limit rod

[0070] 291: Upper part

[0071] 31: Shaft

[0072] 32: Exposed

[0073] 41:Traverse block

[0074] 51: First Airway

[0075] 511: External

[0076] 512: Inner

[0077] 52: Second Airway

[0078] 521: Lower end

[0079] 522: Top

[0080] 53: Third Airway

[0081] 531: Front-end

[0082] 532: Outer end

[0083] 54: The fourth airway

[0084] 541: Top

[0085] 542: Lower end

[0086] 61: Pressure relief valve

[0087] 62: trigger

[0088] 91: First gas source

[0089] 92: Second gas source

[0090] BP: Backward Position

[0091] FP: Forward Position

[0092] HP: Highest position

[0093] LP:Lowest Position

[0094] 10': Two-way drive device for valve parts

[0095] 12': Vertical channel

[0096] 121': Vertical channel wall

[0097] 125': Lower shoulder

[0098] 14': Transverse piston chamber

[0099] 141': Subchannel

[0100] 15': Horizontal piston

[0101] 151': Sub-piston

[0102] 191': Lower sealing ring

[0103] 192': Bottom sealing ring

[0104] 193': Upper sealing ring

[0105] 21': Pneumatic sleeve

[0106] 22': Gap

[0107] 24': Middle sealing ring

[0108] 292': Lower part

[0109] 54': Fourth airway

[0110] 542': Lower end

[0111] BP': Backward Position

[0112] HP': Highest position

[0113] LP': Lowest position DETAILED DESCRIPTION

[0114] The structural principle and working principle of the present invention are described in detail below in conjunction with the accompanying drawings:

[0115] like Figures 1 to 17 As shown, the present invention describes a two-way driving device 10 used for a valve member in a first preferred embodiment, which is mainly composed of a body 11, a pneumatic sleeve 21, a shaft 31, a traverse block 41, a first air passage 51, a second air passage 52, a third air passage 53, a fourth air passage 54 and a pressure relief valve 61, wherein:

[0116] Regarding the diagram, one thing that must be explained first is that Figure 2 The first airway 51, the second airway 52, the third airway 53 and the fourth airway 54 are all displayed in perspective. However, since such a display is too complicated, Figures 4 to 7 The first air duct 51 , the second air duct 52 , the third air duct 53 , and the fourth air duct 54 are shown in perspective views respectively and separately.

[0117] The body 11 has a vertical channel 12 extending up and down, two horizontal piston chambers 14 extending forward and backward, and two auxiliary piston chambers 16 extending up and down. The vertical channel 12 is surrounded by a vertical channel wall 121. Each horizontal piston chamber 14 has a horizontal piston 15 that can move between a forward position FP and a backward position BP. The body 11 also has two sub-channels 141 extending forward and backward, which are respectively connected to each horizontal piston chamber 14, and each sub-channel 141 is provided with a sub-sealing ring 142. Each horizontal piston 15 has a sub-piston 151 extending from the rear end of each sub-channel 141 and being sleeved by each sub-sealing ring 142 so as to slide through and maintain airtightness. The vertical channel wall 121 is provided with a lower sealing ring 191. In the first embodiment, the vertical channel wall 121 is provided with an upper shoulder 123 protruding inwardly, and a bottom sealing ring 192 is provided below the lower sealing ring 191. The upper shoulder 123 can be used as an upper stop point.

[0118] The pneumatic sleeve 21 is located in the vertical channel 12 and is slidably sleeved on the lower sealing ring 191 and the bottom sealing ring 192. The pneumatic sleeve 21 is hollow inside and is elongated, and can move between a highest position HP and a lowest position LP. A gap 22 is formed between the pneumatic sleeve 21 and the vertical channel wall 121 for gas to enter. The pneumatic sleeve 21 has a middle sealing ring 24 arranged in an annular manner on the pneumatic sleeve 21 and abuts against the vertical channel wall 121. The middle sealing ring 24 is higher than the lower sealing ring 191. The pneumatic sleeve 21 also has two auxiliary pistons 26 that extend from bottom to top into the two auxiliary piston chambers 16, and the two auxiliary pistons 26 are connected to the pneumatic sleeve 21 and rise and fall with the pneumatic sleeve 21. In the first embodiment, the pneumatic sleeve 21 has an upper abutment portion 291 protruding outward and located in the gap 22. When the pneumatic sleeve 21 rises to the highest position HP, the upper abutment portion 291 abuts against the upper shoulder 123. When the pneumatic sleeve 21 descends to the lowest position LP, it directly falls on the bottom of the body 11. The aforementioned stopping methods at the highest position HP and the lowest position LP are only examples in the first embodiment and are not intended to limit the scope of the patent of this case.

[0119] The shaft rod 31 is partially placed in the pneumatic sleeve 21 and can move forward and backward, and rise or fall with the pneumatic sleeve 21. The shaft rod 31 has an exposed section 32 exposed above the pneumatic sleeve 21 and the body 11. In the first embodiment, the specific technical content is that a limit rod 28 is fixed in the pneumatic sleeve 21, and the shaft rod 31 is movably passed through by the limit rod 28, and can move forward and backward in the pneumatic sleeve 21 along the limit rod 28. The shaft rod 31 is also affected by the limit rod 28 and rises or falls with the pneumatic sleeve 21. The two transverse pistons 15 are relatively located on both sides of the shaft rod 31. The top of the exposed section 32 of the shaft rod 31 can be used to connect a valve plug (not shown in the figure), which is used to plug or not plug a valve port (not shown in the figure). Since the valve plug or valve port can be directly seen and understood from the prior art, it is no longer represented by a diagram in this case.

[0120] The transverse block 41 is fixed to the two transverse pistons 15 in the two transverse piston chambers 14 and can move forward and backward in the body 11 along with the transverse pistons 15. The shaft 31 can move up and down through the transverse block 41 and move forward and backward along with the transverse block 41.

[0121] The first air channel 51 is provided in the body 11, one end of the first air channel 51 is defined as an outer end 511 and is connected to the outside of the body 11, and the other end is defined as an inner end 512 and is connected to the vertical channel 12. When the pneumatic sleeve 21 is located at the lowest position LP, the inner end 512 of the first air channel 51 is lower than the middle sealing ring 24 and higher than the lower sealing ring 191. In the first embodiment, the outer end 511 of the first air channel 51 is connected to a first gas source 91, and the first gas source 91 can provide gas.

[0122] The second air passage 52 is provided in the main body 11, and one end of the second air passage 52 is defined as a lower end 521 and is connected to the vertical passage 12, and the lower end 521 of the second air passage 52 is lower than the lower sealing ring 191 but higher than the bottom sealing ring 192, and the other end of the second air passage 52 is forked into two and defined as an upper end 522, and is respectively connected to the space between the rear of the transverse piston 15 in the two transverse piston cavities 14 and the main body 11.

[0123] The third gas channel 53 is provided in the body 11, one end of the third gas channel 53 is bifurcated into two and defined as a front end 531, and is respectively connected to the space between the front of the two transverse pistons 15 in the two transverse piston chambers 14 and the body 11, and the other end of the third gas channel 53 is defined as an outer end 532 and is connected to the outside of the body 11. In the first embodiment, the outer end 532 of the third gas channel 53 is connected to a second gas source 92, and the second gas source 91 can provide gas or receive gas.

[0124] The fourth air channel 54 is provided in the main body 11. The fourth air channel 54 is divided into two sections, and one end of each section is defined as an upper end 541 and is respectively connected to the front end of the two sub-channels 141, and the other end of the two sections of the fourth air channel 54 is defined as a lower end 542 and is respectively connected to the two auxiliary piston chambers 16. When the pneumatic sleeve 21 is located at the highest position HP, the lower end 542 of the fourth air channel 54 is higher than the two auxiliary pistons 26.

[0125] The pressure relief valve 61 is provided at the body 11 and communicates with the second air passage 52 and the outside of the body 11. In the first embodiment, the pressure relief valve 61 has a trigger 62, which is connected to the transverse piston 15 and moves forward and backward with the transverse piston 15. When the transverse piston 15 is located at the forward position FP, the trigger does not trigger the pressure relief valve 61 and closes the pressure relief valve 61, and the second air passage 52 is not communicated with the outside of the body 11; when the transverse piston 15 is located at the backward position BP, the trigger 62 triggers the pressure relief valve 61 and opens the pressure relief valve 61. When the pressure relief valve 61 is opened, the second air passage 52 is communicated with the outside of the body 11.

[0126] The pneumatic sleeve 21 has a trigger groove 211 which is concave from the outside to the inside. When the pneumatic sleeve 21 is at the highest position HP, the trigger groove 211 is spatially connected to the gap 22 above the lower sealing ring 191 and the space below the lower sealing ring 191, and further connected to the lower end 521 of the second air passage 52. When the pneumatic sleeve 21 is at the lowest position LP, the trigger groove 211 is lower than the lower sealing ring 191.

[0127] Among them, the sub-piston 151 has a sub-triggering groove 152 recessed from the outside to the inside. When each of the transverse pistons 15 in the two transverse piston chambers 14 is located at the retreat position BP, the sub-triggering groove 152 is spatially connected to the transverse piston chamber 14 behind the sub-sealing ring 142 and the upper end 541 of the fourth air channel 54.

[0128] In the first embodiment, the two auxiliary pistons 26 and the two transverse pistons 15 may be one in number, and are not limited to two. Even if there is only one, the effect of being propelled by gas can still be achieved. The manufacturer can determine the number according to the requirements of volume or thrust, etc. As for the case of only one, since it can be directly understood from the diagram of this case, it is not necessary to show it in a diagram.

[0129] The structure of the first embodiment has been described above, and the operation state of the first embodiment will be described next.

[0130] like Figure 3 and Fig.12As shown, before the action, the pneumatic sleeve 21 is located at the lowest position LP, and the two transverse pistons 15 are located at the retreat position BP.

[0131] like Figure 4 As shown, when sealing is to be performed, that is, when the valve plug (not shown) provided on the shaft 31 is inserted into the valve port (not shown), the first gas source 91 (shown in FIG. Figure 1 ) provides gas (not shown) to enter through the first gas channel 51. Figure 8 As shown, the air entering from the first air passage 51 enters the gap 22, and pushes the pneumatic sleeve 21 together with the shaft 31 and the two auxiliary pistons 26 upward to the highest position HP, thereby presenting Fig.10 Status. Fig.11 As shown in FIG. 2 , when the pneumatic sleeve 21 is at the highest position HP, the trigger groove 211 spatially connects the gap 22 above the lower sealing ring 191 and the space below the lower sealing ring 191, so that the gas will enter the second air passage 52 from the first air passage 51. Fig. 9 and Figure 11-13 As shown, the gas will enter the pressure relief valve 61 and the space between the rear of the second transverse piston 15 and the body 11 in the second transverse piston chamber 14 through the second air passage 52, and push the second transverse piston 15 forward. Although the gas will also leak out from the pressure relief valve 61, as long as the amount of gas entering is greater than the amount of gas leaking out, the second transverse piston 15 can also be pushed. At this time, the air between the front of the second transverse piston 15 and the body 11 will flow to the second gas source 92 through the third air passage 53. Figure 14-15 As shown, after the two transverse pistons 15 are pushed to the forward position FP, they will not move forward any further, and the transverse block 41 and the shaft rod 31 will move forward with the two transverse pistons 15 to a position where they can no longer move forward. At this point, the shaft rod 31 has completed the two-way action of first rising and then moving forward, and the valve plug (not shown in the figure) provided on the shaft rod 31 can be sealed on the valve port (not shown in the figure) to seal it after completing the two-way movement. It should be supplemented that the air in the two auxiliary piston chambers 16 will be squeezed into the fourth air channel 54 during the rising process of the two auxiliary pistons 26, and then enter the two sub-channels 141 and enter the two transverse piston chambers 14.

[0132] like Fig.16 As shown, when unsealing is to be performed, the second gas source 92 (shown in Figure 1 ) provides gas to enter the third air passage 53, and then enter the second transverse piston chamber 14 to push the second transverse piston 15 backward. When the second transverse piston 15 moves backward from the forward position FP, it will drive the second sub-piston 151 to move backward. Fig.17As shown, when the two transverse pistons 15 retreat to the retreat position BP, the sub-triggering grooves 152 on the two sub-pistons 151 will pass through the sub-sealing rings 142, and the gas will enter the sub-triggering grooves 152 and enter the fourth gas passage 54 at this moment. Figure 3 As shown, the gas in the fourth air passage 54 enters the two auxiliary piston chambers 16, and pushes the two auxiliary pistons 26 downward, thereby driving the pneumatic sleeve 21 and the shaft rod 31 to descend to the lowest position LP. When the two horizontal pistons 15 retreat to the retreat position BP, the trigger 62 triggers the pressure relief valve 61 to open, and the gas between the rear of the two horizontal pistons 15 and the body 11 will escape from the second air passage 52 through the pressure relief valve 61. At this point, the shaft rod 31 completes the two-way action of retreating first and then descending, and the valve plug (not shown in the figure) provided on the shaft rod 31 can move the valve plug away from the valve port and unseal it as the two-way movement is completed.

[0133] As can be seen from the above, the present invention can surely complete the action of driving the valve in two directions, and trigger the gas to enter the corresponding channel by the trigger groove 211 of the pneumatic sleeve 21 and the sub-trigger groove 152 on the second sub-piston 151, so that the closing and unsealing actions will not have the problem of jamming. In addition, in the closing process of the present invention, the shaft rod 31 is first raised and then moved horizontally, and in the unsealing process, the shaft rod 31 is first moved horizontally and then lowered, so that the actions can be surely performed in sequence.

[0134] like Figures 18 to 21 As shown, the present invention describes a two-way driving device 10' used for a valve member in a second preferred embodiment, which is mainly similar to the first embodiment mentioned above, except that:

[0135] In the second embodiment, the vertical channel wall 121' is further provided with a lower shoulder 125', and the vertical channel wall 121' is provided with an upper sealing ring 193' located above the upper shoulder 123', and the lower sealing ring 191' is located below the lower shoulder 125', and the upper sealing ring 193' and the bottom sealing ring 192' keep the air in the gap 22' from leaking out of the body 11'. The pneumatic sleeve 21' is further provided with a lower abutment 292' protruding outward, and when the pneumatic sleeve 21' is located at the lowest position LP', the lower abutment 292' abuts against the lower shoulder 125'.

[0136] In addition, in the second embodiment, the two auxiliary piston chambers and the two auxiliary pistons are not provided, and the lower end 542' of the fourth air passage 54' is connected to the vertical passage 12' instead, and when the pneumatic sleeve 21' is located at the highest position HP', the lower end 542' of the fourth air passage 54' is higher than the middle sealing ring 24'. Thus, in the unsealing action, after the two horizontal pistons 15' have retreated to the retreat position BP', the gas in the fourth air passage 54' will enter the gap 22', and push the pneumatic sleeve 21' downward to the lowest position LP'. When the pneumatic sleeve 21' is located at the highest position HP', the lower end 542' of the fourth air passage 54' is located at the middle sealing ring 24' and is lower than the upper sealing ring 193'.

[0137] In the second embodiment, there is only one sub-channel 141', which is connected to one transverse piston chamber 14', and only one of the two transverse piston chambers 14' has one sub-piston 151'. Figure 6 ) enters the second transverse piston chamber 14', through the relationship between the sub-channel 141' of the transverse piston chamber 14' and the sub-piston 151', in a manner similar to the first embodiment described above, when the transverse piston 15' moves backward to the retreat position BP', the gas in the third air channel can only enter the fourth air channel 54' through the sub-channel 141' of the transverse piston chamber 14', and enter the gap 22', thereby pushing the pneumatic sleeve 21' downward to the lowest position LP'.

[0138] The rest of the structure and the effects that can be achieved in the second embodiment are similar to those of the first embodiment, and will not be described in detail again.

[0139] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A two-way driving device for a valve, characterized in that: Include: A body, having a vertical channel extending up and down, at least one transverse piston chamber extending front and back, and at least one auxiliary piston chamber extending up and down, the vertical channel having a vertical channel wall around it, the at least one transverse piston chamber having a transverse piston movable between a forward position and a backward position, the body also having a sub-channel extending front and back and connected to the at least one transverse piston chamber, and a sub-sealing ring being arranged in the sub-channel, the transverse piston having a sub-piston extending from the rear end of the sub-channel and being sleeved by the sub-sealing ring so as to slidably pass therethrough, and the vertical channel wall having a lower sealing ring; A pneumatic sleeve is located in the vertical channel and is slidably sleeved on the lower sealing ring. The pneumatic sleeve is hollow inside and is elongated. It can move between a highest position and a lowest position. A gap is formed between the pneumatic sleeve and the wall of the vertical channel for gas to enter. The pneumatic sleeve has a middle sealing ring arranged around the pneumatic sleeve and abutting against the wall of the vertical channel. The middle sealing ring is higher than the lower sealing ring. The pneumatic sleeve also has at least one auxiliary piston extending from bottom to top into the at least one auxiliary piston cavity. A shaft rod, partly disposed in the pneumatic sleeve and capable of moving forward and backward, and rising or falling with the pneumatic sleeve, the shaft rod having an exposed section exposed above the pneumatic sleeve and the body; A transverse moving block is fixedly mounted on the transverse piston in the at least one transverse piston cavity and can move forward and backward in the body along with the transverse piston. The shaft system can move up and down through the transverse moving block and move forward and backward along with the transverse moving block. a first air passage, provided in the body, one end of the first air passage being defined as an outer end and connected to the outside of the body, and the other end being defined as an inner end and connected to the vertical passage, and when the pneumatic sleeve is located at the lowest position, the inner end of the first air passage is lower than the middle sealing ring; a second air passage, provided in the body, one end of the second air passage being defined as a lower end and connected to the vertical passage, and the lower end of the second air passage being lower than the lower sealing ring, and the other end of the second air passage being defined as an upper end and connected to the space between the rear of the transverse piston in the at least one transverse piston cavity and the body; a third air passage, provided in the body, one end of the third air passage being defined as a front end and communicating with the space between the front of the transverse piston in the at least one transverse piston cavity and the body, and the other end of the third air passage being defined as an outer end and communicating with the outside of the body; a fourth air channel, provided in the body, one end of the fourth air channel being defined as an upper end and connected to the front end of the sub-channel, and the other end of the fourth air channel being defined as a lower end and connected to the at least one auxiliary piston chamber, and when the pneumatic sleeve is located at the highest position, the lower end of the fourth air channel is higher than the at least one auxiliary piston; and a pressure relief valve, disposed on the body and connected to the second air passage and the outside of the body; Wherein, the pneumatic sleeve has a trigger groove which is concave from the outside to the inside. When the pneumatic sleeve is located at the highest position, the trigger groove spatially connects the gap above the lower sealing ring and the space below the lower sealing ring, and further connects the lower end of the second air channel; Among them, the sub-piston has a sub-triggering groove recessed from the outside to the inside. When the transverse piston in the at least one transverse piston cavity is in the retracted position, the sub-triggering groove spatially connects the at least one transverse piston cavity behind the sub-sealing ring and the upper end of the fourth air channel.

2. The two-way driving device for a valve member according to claim 1, characterized in that: in: The vertical channel wall has an upper shoulder portion protruding inwardly, and a bottom sealing ring is arranged below the lower sealing ring; the pneumatic sleeve has an upper abutment portion protruding outwardly and located in the gap.

3. The two-way driving device for a valve member according to claim 2, characterized in that: in: When the pneumatic sleeve is located at the lowest position, the inner end of the first air passage is lower than the middle sealing ring and higher than the lower sealing ring.

4. The two-way driving device for a valve member according to claim 2, characterized in that: in: The lower end of the second air passage is lower than the lower sealing ring but higher than the bottom sealing ring.

5. The two-way driving device for a valve member according to claim 1, characterized in that: in: A limiting rod is fixed in the pneumatic sleeve, and the shaft rod is movably passed through the limiting rod and can move forward and backward in the pneumatic sleeve along the limiting rod. The shaft rod is also acted upon by the limiting rod to rise or fall with the pneumatic sleeve.

6. The two-way driving device for a valve member according to claim 1, characterized in that: in: The at least one transverse piston cavity is two in number and is respectively located on both sides of the shaft rod. Each of the two transverse piston cavities has a transverse piston. The second air channel and the third air channel are both branched and connected to the two transverse piston cavities.

7. The two-way driving device for a valve member according to claim 6, characterized in that: in: One of the two transverse piston chambers has the sub-channel, and one of the two transverse pistons has the sub-piston.

8. The two-way driving device for a valve member according to claim 1, characterized in that: in: The pressure relief valve has a touch piece, which is connected to the transverse piston in the at least one transverse piston cavity and moves forward and backward with the transverse piston. When the transverse piston is located at the forward position, the touch piece does not touch the pressure relief valve and the pressure relief valve is closed, and the second air channel is not connected to the outside of the body; when the transverse piston is located at the backward position, the touch piece touches the pressure relief valve to open the pressure relief valve. When the pressure relief valve is opened, the second air channel is connected to the outside of the body.

9. A two-way driving device for a valve, characterized in that: Include: A body, having a vertical channel extending up and down and at least one transverse piston cavity extending front and back, the vertical channel having a vertical channel wall around it, the at least one transverse piston cavity having a transverse piston movable between a forward position and a backward position, the body also having a sub-channel extending front and back connected to the at least one transverse piston cavity, the sub-channel having a sub-sealing ring, the transverse piston having a sub-piston extending from the front end of the sub-channel and being sleeved by the sub-sealing ring so as to slidably pass therethrough, the vertical channel wall having a lower sealing ring; A pneumatic sleeve is located in the vertical channel and is slidably sleeved on the lower sealing ring. The pneumatic sleeve is hollow inside and is elongated. It can move between a highest position and a lowest position. A gap is formed between the pneumatic sleeve and the wall of the vertical channel for gas to enter. The pneumatic sleeve has a middle sealing ring that is annularly arranged on the pneumatic sleeve and abuts against the wall of the vertical channel. The middle sealing ring is higher than the lower sealing ring. A shaft rod, partly disposed in the pneumatic sleeve and capable of moving forward and backward, and rising or falling with the pneumatic sleeve, the shaft rod having an exposed section exposed above the pneumatic sleeve and the body; A transverse moving block is fixedly mounted on the transverse piston in the at least one transverse piston cavity and can move forward and backward in the body along with the transverse piston. The shaft rod can move up and down through the transverse moving block and move forward and backward along with the transverse moving block. a first air passage, provided in the body, one end of the first air passage being defined as an outer end and connected to the outside of the body, and the other end being defined as an inner end and connected to the vertical passage, and when the pneumatic sleeve is located at the lowest position, the inner end of the first air passage is lower than the middle sealing ring; a second air passage, provided in the body, one end of the second air passage being defined as a lower end and connected to the vertical passage, and the lower end of the second air passage being lower than the lower sealing ring, and the other end of the second air passage being defined as an upper end and connected to the space between the rear of the transverse piston in the at least one transverse piston cavity and the body; a third air passage, provided in the body, one end of the third air passage being defined as a front end and communicating with the space between the front of the transverse piston in the at least one transverse piston cavity and the body, and the other end of the third air passage being defined as an outer end and communicating with the outside of the body; a fourth air channel, provided in the body, one end of the fourth air channel is defined as an upper end and connected to the front end of the sub-channel, and the other end of the fourth air channel is defined as a lower end and connected to the vertical channel, and when the pneumatic sleeve is located at the highest position, the lower end of the fourth air channel is higher than the middle sealing ring; and a pressure relief valve, disposed on the body and connected to the second air passage and the outside of the body; Wherein, the pneumatic sleeve has a trigger groove which is concave from the outside to the inside. When the pneumatic sleeve is located at the highest position, the trigger groove spatially connects the gap above the lower sealing ring and the space below the lower sealing ring, and further connects the lower end of the second air channel; Among them, the sub-piston has a sub-triggering groove recessed from the outside to the inside. When the transverse piston in the at least one transverse piston cavity is in the forward position, the sub-triggering groove spatially connects the at least one transverse piston cavity behind the sub-sealing ring and the upper end of the fourth air channel.

10. The two-way driving device for a valve member according to claim 9, characterized in that: in: The vertical channel wall has an upper shoulder protruding inward and a lower shoulder located below the upper shoulder, and the vertical channel wall is provided with an upper sealing ring located above the upper shoulder, and a bottom sealing ring located below the lower sealing ring, and the lower sealing ring is located below the lower shoulder. The upper sealing ring and the bottom sealing ring keep the air in the gap from leaking out of the body; the pneumatic sleeve has an upper abutment protruding outward and located in the gap, and a lower abutment.

11. The two-way driving device for a valve member according to claim 10, characterized in that: in: When the pneumatic sleeve is located at the lowest position, the inner end of the first air passage is lower than the middle sealing ring and higher than the lower sealing ring.

12. The two-way driving device for a valve member according to claim 10, characterized in that: in: The lower end of the second air passage is lower than the lower sealing ring but higher than the bottom sealing ring.

13. The two-way driving device for a valve member according to claim 10, characterized in that: in: When the pneumatic sleeve is located at the highest position, the lower end of the fourth air passage is higher than the middle sealing ring and lower than the upper sealing ring.

14. The two-way driving device for a valve member according to claim 9, characterized in that: in: A limiting rod is fixed in the pneumatic sleeve, and the shaft rod is movably passed through the limiting rod and can move forward and backward in the pneumatic sleeve along the limiting rod. The shaft rod is also acted upon by the limiting rod to rise or fall with the pneumatic sleeve.

15. The two-way driving device for a valve member according to claim 9, characterized in that: in: The at least one transverse piston cavity is two in number and is respectively located on both sides of the shaft rod. Each of the two transverse piston cavities has a transverse piston. The second air channel and the third air channel are both branched and connected to the two transverse piston cavities.

16. The two-way driving device for a valve member according to claim 15, characterized in that: in: One of the two transverse piston chambers has the sub-channel, and one of the two transverse pistons has the sub-piston.

17. The two-way driving device for a valve member according to claim 9, characterized in that: in: The pressure relief valve has a touch piece, which is connected to the transverse piston in the at least one transverse piston cavity and moves forward and backward with the transverse piston. When the transverse piston is located at the forward position, the touch piece does not touch the pressure relief valve and the pressure relief valve is closed, and the second air channel is not connected to the outside of the body; when the transverse piston is located at the backward position, the touch piece touches the pressure relief valve to open the pressure relief valve. When the pressure relief valve is opened, the second air channel is connected to the outside of the body.

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