CN117704081B - High-pressure pneumatic execution valve - Google Patents
High-pressure pneumatic execution valve Download PDFInfo
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- CN117704081B CN117704081B CN202410164628.9A CN202410164628A CN117704081B CN 117704081 B CN117704081 B CN 117704081B CN 202410164628 A CN202410164628 A CN 202410164628A CN 117704081 B CN117704081 B CN 117704081B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a high-pressure pneumatic execution valve, which relates to the field of pneumatic execution valves and comprises a valve body assembly and a pneumatic execution assembly, wherein the valve body assembly is provided with a valve pipe, a butterfly plate is arranged in the valve pipe, the butterfly plate is provided with a rotating shaft, the butterfly plate can rotate through the rotating shaft, and one end of the rotating shaft is arranged in the pneumatic execution assembly; the butterfly plate is provided with a sliding cavity, and a sliding block is arranged in the sliding cavity; the pneumatic execution assembly is connected with the valve body assembly; the rotating shaft is internally provided with a shaft hole, the shaft hole is internally provided with a loop bar, the loop bar is also connected with a transmission bar, the axis of the transmission bar is vertical to the axis of the loop bar, the rotating shaft is provided with a strip-shaped notch, and the transmission bar is connected with the loop bar through the strip-shaped notch; the pneumatic execution assembly is provided with a cylindrical cavity at the periphery of the strip-shaped notch shaft section of the rotating shaft, the cylindrical cavity is provided with a spiral groove, and the other end of the transmission rod is arranged in the spiral groove; the invention improves the structure of the spring by arranging the follow-up seal and matching, so that the invention has good sealing property and starting property.
Description
Technical Field
The invention relates to the technical field of pneumatic execution valves, in particular to a high-pressure pneumatic execution valve.
Background
The Honiswell pneumatic actuator valve (pneumatic actuator valves) is a device for driving the valve to open or close or regulate by using compressed air, and is widely applied to an automatic control system, particularly in the fields of HVAC (heating, ventilation and air conditioning), petrochemical industry, water treatment, energy management and the like; a key advantage of such actuators is that they are simple, reliable and easy to integrate into various control environments.
Honiswil, as a leader of automation solutions, provides various types of pneumatic actuators, including direct-acting and rotary designs. These actuators may be used with ball valves, butterfly valves, or other types of shutters to achieve precise control of fluid flow.
The working principle of the pneumatic actuator is very simple: when compressed air enters the actuator, the compressed air pushes the piston or the diaphragm, and the action is converted into linear or rotary motion of the valve rod through the mechanical connecting rod system, so that the opening degree of the valve is changed; the actuator is typically used with a positioner that can receive a signal from a control system and precisely adjust the compressed air to control the position of the actuator.
Meanwhile, the traditional pneumatic execution valve still has the problem of poor sealing performance, so that the pneumatic execution valve with good sealing performance is necessary to design.
Disclosure of Invention
The present invention aims to provide a high-pressure pneumatic actuator valve to solve the above problems.
The invention is realized by the following technical scheme:
generally, a high-pressure pneumatic execution valve comprises a valve body assembly and a pneumatic execution assembly, wherein the valve body assembly is provided with a valve pipe, a butterfly plate is arranged in the valve pipe, the butterfly plate is provided with a rotating shaft, the butterfly plate can rotate through the rotating shaft, and one end of the rotating shaft is arranged in the pneumatic execution assembly; the valve body and the pneumatic execution assembly are arranged, a rotating shaft is arranged between the valve body and the pneumatic execution assembly, and the pneumatic execution assembly controls the rotation of the rotating shaft so as to control the opening and closing of the valve body;
the butterfly plate is provided with a sliding cavity, and a sliding block is arranged in the sliding cavity; the sliding cavity is arranged, so that the sliding block in the sliding cavity can slide;
the pneumatic execution assembly is connected with the valve body assembly and is provided with a first chamber and a second chamber, the first chamber and the second chamber are cylindrical, and the first chamber and the second chamber are coaxial; the first chamber and the second chamber which are coaxial are arranged, so that pistons arranged in the first chamber and the second chamber can be connected to the cylindrical frame to form a double-headed piston;
the rotating shaft is internally provided with a shaft hole, the shaft hole is internally provided with a loop bar, the loop bar can reciprocate in the rotating shaft, the loop bar is also connected with a transmission bar, the axis of the transmission bar is vertical to the axis of the loop bar, the rotating shaft is provided with a strip-shaped notch, the orientation of the strip-shaped notch is the same as that of the rotating shaft, and the transmission bar is connected with the loop bar through the strip-shaped notch; by providing the loop bar within the spindle, the loop bar is caused to transfer a second motion of the pneumatic actuator assembly.
The pneumatic execution assembly is provided with a cylindrical cavity at the periphery of the strip-shaped notch shaft section of the rotating shaft, the cylindrical cavity is coaxial with the rotating shaft, the cylindrical cavity is provided with a spiral groove, and the other end of the transmission rod is arranged in the spiral groove; when the rotating shaft rotates, the transmission rod is driven to rotate, the transmission rod rotates and must slide in the spiral groove, and the spiral groove can drive the sleeve rod to move upwards in the direction of the rotating shaft to transmit power.
Further, the radial width of the first chamber is larger than that of the second chamber, a first piston is arranged in the first chamber, a second piston is arranged in the second chamber, the first piston and the second piston are connected through a cylindrical frame, a notch is formed in the middle shaft section of the cylindrical frame, a connecting rod is hinged to the position, close to the first piston, inside the cylindrical frame, the other end of the connecting rod is hinged to a swinging rod arranged outside the notch, and the other end of the swinging rod is connected with a rotating shaft; the pistons of the first chamber and the second chamber are connected through the cylindrical frame, so that the cylindrical frame can move under the combined action of the two pistons, the connecting rod is driven to move, the swinging rod is driven to rotate further, and the rotating shaft is driven to rotate finally.
Preferably, a connecting table is arranged between the first chamber and the second chamber, the connecting table is provided with a shaft-shaped groove, the cylindrical frame penetrates through the shaft-shaped groove and is respectively connected with the first piston and the second piston, a sectional spring is further arranged between the connecting table and the first piston and is formed by connecting a first spring and a second spring, the first spring and the second spring are respectively positioned at different shaft sections, the elastic force of the first spring is larger than that of the second spring, the first spring and the second spring are coaxial, and the compressible stroke of the first spring is larger than that of the second spring; through setting up the sectional spring to first spring is greater than the second spring on elasticity and compressible stroke, makes the sectional spring at the in-process of compression, and the minimum pressure casing compression sectional spring of beginning is convenient for more smoothly open the butterfly plate in the valve body.
Further, the valve pipe is provided with an air flow input end and an air flow output end, wherein the valve pipe wall at one side of the air flow output end is provided with a safety valve which is communicated with the inner side of the valve pipe, the safety valve is also connected with an air duct, and the other end of the air duct is communicated with the second chamber; the gas at the gas flow output end is output to the second chamber through the gas guide pipe, so that the second chamber can form reverse thrust, and the action of the butterfly plate is adjusted in cooperation with the first chamber.
Preferably, the butterfly plate is provided with an inclined penetrating hole, the rotating shaft is obliquely penetrated through the butterfly plate, the middle part of the butterfly plate is provided with a rectangular chute, the rotating shaft is provided with a beveling chute corresponding to the rectangular chute, and the rectangular chute and the beveling chute form a sliding cavity; by arranging the sliding cavity, the sliding block arranged in the sliding cavity can reciprocate according to the lead arranged in the sliding cavity.
Preferably, the sliding block is composed of a transverse bar and an abutting block perpendicular to the transverse bar, wherein the rotating shaft is further provided with an axial groove with the same axial direction at the inclined chute shaft section, the abutting block is arranged in the axial groove, and the abutting block abuts on the transverse bar; through setting up the slider to carry out the butt setting, make the slider can normally slide, and can not block.
Preferably, the orientation of the cross bar is vertical to the orientation of the rotating shaft, two ends of the cross bar are respectively connected with a third piston, the third pistons are correspondingly provided with third piston cavities, the third piston cavities are arranged in the butterfly plates, the other sides of the third piston cavities are also communicated with annular oil cavities, and the reciprocating motion of the third pistons can drive the oil pressure in the annular oil cavities to change; a reset spring is arranged between the two ends of the transverse bar and the third piston cavity; by arranging the third piston and communicating the third piston cavity with the annular oil cavity, the hydraulic pressure of the annular oil cavity can be changed when the third piston reciprocates.
Preferably, the butterfly plate is further provided with an annular notch on the radial outer side of the annular oil cavity, a scroll spring is arranged on the inner side of the annular notch in a surrounding manner, an elastic sealing ring is arranged on the outer side of the scroll spring in a closely fitting manner, a plurality of fourth piston cavities are arranged on an annular interlayer between the annular oil cavity and the annular notch, fourth pistons are arranged in the fourth piston cavities and are communicated with the annular oil cavity and the annular notch, a transverse piece is connected to the end of a piston rod, which is correspondingly arranged, of the fourth pistons, and the transverse piece is abutted against the scroll spring; through set up the scroll spring at a plurality of fourth piston ends that encircle, firstly ensure that a plurality of fourth pistons can be comparatively synchronous when the shrink, the scroll spring carries out the regulation and control of position and partial pressure, secondly get and protect the comparatively even expansion on the circumference of elastic sealing circle, the scroll spring is comparatively even, thirdly ensure that the elastic sealing circle can retract smoothly in the middle of the annular incision, the elastic sealing circle articulates with the outer shell fragment of scroll spring, when the elastic sealing circle elasticity weakens, the scroll spring can maintain the normal work of elastic sealing circle.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the invention, the sliding cavity is formed in the butterfly plate, the sliding block is arranged in the sliding cavity, the third piston is arranged at the front end of the sliding block, the sleeve rod is arranged in the rotating shaft, the transmission rod and the spiral groove are arranged for driving the sleeve rod, when the butterfly plate is opened, the first piston of the action executing assembly drives the connecting rod fixed on the cylindrical frame to move, the connecting rod drives the swinging rod to rotate, the swinging rod is fixed on the rotating shaft and drives the rotating shaft to rotate, in the rotating shaft rotating process, the sleeve rod in the rotating shaft is connected to the external transmission rod to rotate in the spiral groove in a following way, the groove wall of the spiral groove drives the sleeve rod to move away from the butterfly plate, the end head of the sleeve rod reduces the pushing action on the sliding block, the sliding block drives the third piston to move under the action of the return spring, the hydraulic liquid in part of the annular oil cavity is extracted, the annular oil cavity is reduced to drive the plurality of fourth pistons arranged in a surrounding way, the radial pushing of the spiral spring arranged on the outer side is reduced, the spiral spring radius is reduced, the spiral spring is extruded to the outer elastic sealing part is retracted into the butterfly plate, the normal opening of the butterfly plate is ensured, and conversely, when the butterfly plate is closed, the expansion of the elastic sealing ring is expanded, and the sealing pipe is expanded;
2. the invention has the advantages that the static friction force can be larger again in the abutting sealing process between the butterfly plate and the valve tube, and the valve plate has better starting performance by reducing the early compression elastic force of the segment spring, namely the spring elastic force when the valve plate is opened, so that the unstable condition that the butterfly plate rotates rapidly after the butterfly plate is opened is avoided because the static friction force is larger and the pressure of the compressed gas input by the control port is forced to be increased when the butterfly plate is opened.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a side structure of an airway of the present invention;
FIG. 3 is a schematic top side view;
FIG. 4 is a schematic view of the cutting of the present invention;
FIG. 5 is a schematic diagram of a detail A in FIG. 4;
FIG. 6 is a schematic view of a segmented spring of the present invention;
FIG. 7 is a schematic view of a butterfly plate and a rotary shaft according to the present invention;
FIG. 8 is a schematic view of the axial cutting of the butterfly plate and the shaft;
FIG. 9 is a schematic diagram of a detail at B in FIG. 8;
FIG. 10 is a schematic view of detail C in FIG. 8;
FIG. 11 is a schematic view of the butterfly plate and the shaft of the invention in radial direction;
FIG. 12 is a schematic view of detail D in FIG. 11;
fig. 13 is a detailed schematic diagram of fig. 11 at E.
The reference numerals are represented as follows: the device comprises a first chamber, a second chamber, a 2-air guide pipe, a 3-first chamber, a 4-control port, a 5-rotating shaft, a 6-valve pipe, a 7-butterfly plate, a 8-first spring, a 9-sectional spring, a 10-first piston, a 11-connecting rod, a 12-swinging rod, a 13-second piston, a 14-cylindrical frame, a 15-sleeve rod, a 16-transmission rod, a 17-spiral groove, a 18-connecting sleeve, a 19-second spring, a 20-sliding block, a 21-annular oil cavity, a 22-fourth piston cavity, a 23-fourth piston, a 24-spiral spring, a 25-elastic sealing ring, a 26-third piston cavity, a 27-third piston, a 28-reset spring, a 29-rectangular sliding groove, a 31-axial groove and a 32-chamfer sliding groove.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Examples:
as shown in fig. 1 to 13, the present embodiment includes a valve body assembly and a pneumatic execution assembly, wherein the pneumatic execution assembly controls the turn-off of the valve body, the valve body assembly is provided with a valve tube 6, a butterfly plate 7 is arranged in the valve tube 6, the butterfly plate 7 is a circular plate, the turn-off of the valve tube 6 is realized by the rotation of the butterfly plate 7, the butterfly plate 7 is provided with a rotating shaft 5, the butterfly plate 7 can rotate through the rotating shaft 5, one end of the rotating shaft 5 is arranged in the pneumatic execution assembly, and the pneumatic execution assembly controls the rotation of the butterfly plate 7 by controlling the rotation of the rotating shaft 5, thereby controlling the posture of the butterfly plate 7 in the valve tube 6, and further controlling the flow rate of fluid in the valve tube 6; the butterfly plate 7 is provided with a sliding cavity, a sliding block 20 is arranged in the sliding cavity, and the sliding block 20 slides in the sliding cavity so as to drive a third piston 27 to reciprocate in a third piston cavity 26;
the pneumatic execution assembly is connected with the valve body assembly and is provided with a first chamber 3 and a second chamber 1, the first chamber 3 and the second chamber 1 are both cylindrical, a connecting rod 11 is hinged to the inner part of the cylindrical frame 14 at a position close to the first piston 10, the other end of the connecting rod 11 is hinged to a swinging rod 12 arranged outside the notch, the other end of the swinging rod 12 is connected with a rotating shaft 5, when the radial width of the first chamber 3 is larger than that of the second chamber 1, the first piston 10 is arranged in the first chamber 3, the second chamber 1 is provided with a second piston 13, the first piston 10 is connected with the second piston 13 through a cylindrical frame 14, the first piston 10, the second piston 13 and the cylindrical frame 14 form a double-headed piston, the middle shaft section of the cylindrical frame 14 is provided with a notch, the inside of the cylindrical frame 14 is hinged to the connecting rod 11 at a position close to the first piston 10, the other end of the connecting rod 11 is hinged to the swinging rod 12 arranged outside the notch, the other end of the swinging rod 12 is connected with the rotating shaft 5, when the first piston 10 and the second piston 13 drive the connecting rod 11 to reciprocate upwards at the axis of the cylindrical frame 14, the connecting rod 11 can drive the swinging rod 12 to swing, the connecting rod 12 can drive the end to swing, the swinging rod 12 is driven by the connecting rod 12 to swing valve 7, and the fluid is driven by the rotating shaft 7 to rotate synchronously, and the fluid is driven by the rotating valve 7, and the rotating plate 7 is driven by the rotating shaft 5.
The connecting table is arranged between the first chamber 3 and the second chamber 1, the connecting table is provided with a shaft-shaped groove, the cylindrical frame 14 passes through the shaft-shaped groove and is respectively connected with the first piston 10 and the second piston 13, a sectional spring 9 is further arranged between the connecting table and the first piston 10, the sectional spring 9 is formed by connecting the first spring 8 and the second spring 19, the first spring 8 and the second spring 19 are respectively positioned on different shaft sections, the elastic force of the first spring 8 is larger than that of the second spring 19, the first spring 8 and the second spring 19 are coaxial, the compressible stroke of the first spring 8 is larger than that of the second spring 19, the first spring 8 is connected with the second spring 19 through a connecting sleeve 18, the connecting sleeve 18 is a conventional metal connecting element, the elastic force of the first spring 8 and the second spring 19 and the compressible stroke are arranged, when the sectional spring 9 is compressed, the sectional spring 9 is compressed first by compressing the second spring 19, the required pressure of the sectional spring 9 is smaller when the sectional spring 9 is initially contracted, the elastic force is larger than the elastic force of the valve plate 7 and the valve plate is opened, namely, the elastic force of the valve plate is better is opened, and the valve plate is better in the elastic force can be opened, namely, the valve plate is better in the compression process, and the valve plate can be opened, and the elastic force can be better by opening the elastic force.
The rotating shaft 5 is internally provided with a shaft hole, the shaft hole is internally provided with a loop bar 15, the loop bar 15 is coaxially sleeved in the shaft hole, the loop bar 15 can reciprocate in the shaft hole and moves towards the rotating shaft 5, the loop bar 15 is also connected with a transmission bar 16, the transmission bar 16 is fixed with the loop bar 15, the axis of the transmission bar 16 is perpendicular to the axis of the loop bar 15, the rotating shaft 5 is provided with a strip-shaped notch, the strip-shaped notch faces towards the same direction as the rotating shaft 5, the transmission bar 16 is connected with the loop bar 15 through the strip-shaped notch, when the loop bar 15 axially reciprocates in the shaft hole, the transmission bar 16 can be driven to reciprocate along the strip-shaped notch, otherwise, the transmission bar 16 can reciprocate along the strip-shaped notch, and then the loop bar 15 can be driven to reciprocate along the shaft hole in the shaft hole;
the pneumatic execution assembly is provided with a cylindrical cavity at the periphery of the bar-shaped notch shaft section of the rotating shaft 5, the cylindrical cavity is coaxial with the rotating shaft 5, the cylindrical cavity is provided with a spiral groove 17, the other end of the transmission rod 16 is arranged in the spiral groove 17, when the butterfly plate 7 is closed, the spiral groove pushes the transmission rod 16 to be close to the butterfly plate 7 so as to drive the loop bar 15 to push the sliding block 20 forward to squeeze the third piston 27, when the butterfly plate 7 is opened, the spiral groove pushes the transmission rod 16 to be far away from the butterfly plate 7 so as to drive the loop bar 15 to reduce the thrust to the sliding block 20 backward, so that the third piston 27 weakens the squeezing to the third piston cavity 26; the butterfly plate 7 is arranged in a direction of rotation of the rotary closure, the spiral groove 17 is arranged in a direction of rotation of the butterfly plate 7, and the spiral groove 17 is arranged in a direction of rotation of the rotary opening, away from the butterfly plate 7.
Further, the valve tube 6 is provided with an air flow input end and an air flow output end, wherein the wall of the valve tube 6 at one side of the air flow output end is provided with a safety valve, the safety valve is communicated with the inner side of the valve tube 6, the safety valve is also connected with an air duct 2, the other end of the air duct 2 is communicated with the second chamber 1, the air duct 2 guides the air at the output end into the second chamber 1, the air pressure of the second chamber 1 keeps consistent with the air flow output end, meanwhile, the air pressure of the second chamber 1 forms a reverse thrust to the first piston 10 of the first chamber 3 through the second piston 13, the air flow is input into the control port 4 to push the first piston 10 to move towards the second chamber 1, the butterfly plate 7 is opened, when the butterfly plate 7 is opened, the air flow at the air flow input end flows into the air flow output end, the air pressure of the air flow output end is gradually increased, the air pressure of the second chamber 1 is gradually increased, the reverse thrust of the second chamber 1 is matched with the elastic force of the sectional spring 9 of the first chamber 3, the cylindrical frame 14 is pushed towards the first chamber 3, the connecting rod 11 connected with the cylindrical frame 14 drives the swing rod 12 to rotate 5 to rotate towards the second chamber 1, the rotation shaft 7 is closed, the air pressure is reduced, the air pressure of the rotation shaft 5 is driven to rotate the air flow output shaft 5 is reduced, and the air pressure of the air pressure is driven to rotate the rotary shaft 5 is reduced, and the air pressure of the butterfly plate is opened.
Preferably, the butterfly plate 7 is provided with an inclined penetrating hole, the butterfly plate 7 is penetrated in the inclination of the rotating shaft 5, the rectangular sliding groove 29 is arranged in the middle of the butterfly plate 7, the inclined sliding groove 32 is arranged in the rotating shaft 5 corresponding to the rectangular sliding groove 29, the rectangular sliding groove 29 and the inclined sliding groove 32 form a sliding cavity, the butterfly plate 7 is arranged obliquely relative to the rotating shaft 5, the rectangular sliding groove 29 in the butterfly plate 7 is provided with the sliding block 20 for sliding, the inclined sliding groove corresponding to the rotating shaft 5 is matched with the rectangular sliding groove 29 of the butterfly plate 7, and the sliding cavity formed by the two is formed into a whole cavity in the butterfly plate 7, so that the sliding block 20 can be arranged in the whole cavity for sliding.
Preferably, the slider 20 is composed of a cross bar and a cross bar perpendicular abutting block, wherein the shaft 5 is further provided with an axial groove 31 in the same axial direction at the shaft section of the chamfer chute 32, the abutting block is arranged in the axial groove 31, the abutting block abuts against the cross bar, the cross bar is perpendicular to the shaft 5, the cross bar is kept in a vertical state and slides obliquely relative to the shaft 5, and the cross bar continuously moves up and down in the sliding process, so that the abutting block which is perpendicular to the cross bar is arranged at the rear side of the cross bar, the shaft 5 is provided with an axial groove 31 corresponding to the abutting block, the head of the sleeve 15 is also abutted at the rear side of the abutting block, when the sleeve 15 pushes the abutting block, the abutting block can still effectively push the cross bar vertically to the length of the cross bar, and the abutting block cannot be contacted due to the position change of the cross bar, therefore, the abutting can be separated, and the abutting is not fixed, and the sleeve 15, the abutting block and the main clamping bar can be blocked in a manner, and the abutting bar can be increased for the purpose of increasing the reliability.
Preferably, the orientation of the transverse bar is vertical to the orientation of the rotating shaft 5, two ends of the transverse bar are respectively connected with a third piston 27, the third piston 27 is correspondingly provided with a third piston cavity 26, the third piston cavity 26 is arranged in the butterfly plate 7, the other side of the third piston cavity 26 is also communicated with an annular oil cavity 21, and the reciprocating motion of the two third pistons 27 can drive the oil pressure in the annular oil cavity 21 to change; a return spring 28 is disposed between the two ends of the cross bar and the third piston cavity 26, and the third piston 27 is pushed forward to raise the pressure in the annular oil cavity 21, which is remarkable in that in the embodiment, high temperature resistant liquid such as silicone oil, high temperature hydraulic oil and the like can be used as the hydraulic oil body in the annular oil cavity 21.
Preferably, the butterfly plate 7 is further provided with an annular notch on the radial outer side of the annular oil cavity 21, the axis of the annular notch coincides with the axis of the butterfly plate 7, the annular notch is arranged at the middle shaft section of the butterfly plate 7, a scroll spring 24 is arranged on the inner side of the annular notch in a surrounding mode, an elastic sealing ring 25 is tightly attached to the outer side of the scroll spring 24, the elastic sealing ring 25 adopts a high-temperature resistant elastic sealing ring 25, a plurality of fourth piston cavities 22 are arranged on an annular interlayer between the annular oil cavity 21 and the annular notch, a fourth piston 23 is arranged in the fourth piston cavity 22, the fourth piston cavity 22 is communicated with the annular oil cavity 21 and the annular notch, a transverse piece is connected with a piston rod end head which is correspondingly arranged on the fourth piston 23 and is abutted against the scroll spring 24, when the butterfly plate 7 is closed, when the third piston 27 is pushed by the sliding block 20 to extrude the third piston cavity 26, the third piston cavity 26 drives the internal pressure of the annular oil cavity 21 to rise, the rising liquid pressure extrudes a plurality of fourth pistons 23 which are circumferentially arranged, the fourth pistons 23 push the scroll springs 24 to expand, the expanded scroll springs 24 extrude the elastic sealing rings 25 to complete gap sealing between the butterfly plates 7 and the valve tube 6, when the butterfly plates 7 are opened, the sleeve rod 15 is retracted, the sliding blocks 20 of the third pistons 27 are retracted under the action of the return springs 28, the internal pressure of the annular oil cavity 21 is reduced, the plurality of fourth pistons 23 are retracted under the action of the oil pressure reduction and the scroll springs 24, the elastic sealing rings 25 shrink the space again and shrink into annular cuts of the butterfly plates 7, and it is worth mentioning that the elastic sheet gaps between the scroll springs 24 are smaller and the adjacent elastic sheets are mutually attached to avoid the phenomenon that when the fourth pistons 23 radially push the scroll springs 24, the expansion effect of the scroll springs 24 is not obvious.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (4)
1. The high-pressure pneumatic execution valve comprises a valve body assembly and a pneumatic execution assembly and is characterized in that the valve body assembly is provided with a valve pipe (6), a butterfly plate (7) is arranged in the valve pipe (6), the butterfly plate (7) is provided with a rotating shaft (5), the butterfly plate (7) can rotate through the rotating shaft (5), and one end of the rotating shaft (5) is arranged in the pneumatic execution assembly;
the butterfly plate (7) is provided with a sliding cavity, and a sliding block (20) is arranged in the sliding cavity;
the pneumatic execution assembly is connected with the valve body assembly and is provided with a first chamber (3) and a second chamber (1), the first chamber (3) and the second chamber (1) are cylindrical, and the first chamber (3) and the second chamber (1) are coaxial;
the rotary shaft (5) is internally provided with a shaft hole, the shaft hole is internally provided with a loop bar (15), the loop bar (15) can reciprocate in the rotary shaft (5), the loop bar (15) is also connected with a transmission bar (16), the axis of the transmission bar (16) is perpendicular to the axis of the loop bar (15), the rotary shaft (5) is provided with a strip-shaped notch, the strip-shaped notch faces towards the same direction as the rotary shaft (5), and the transmission bar (16) is connected with the loop bar (15) through the strip-shaped notch;
the pneumatic execution assembly is provided with a cylindrical cavity at the periphery of the strip-shaped notch shaft section of the rotating shaft (5), the cylindrical cavity is coaxial with the rotating shaft (5), the cylindrical cavity is provided with a spiral groove (17), and the other end of the transmission rod (16) is arranged in the spiral groove (17);
the butterfly plate (7) is provided with an inclined penetrating hole, the rotating shaft (5) is obliquely penetrated through the butterfly plate (7), the middle part of the butterfly plate (7) is provided with a rectangular chute (29), the rotating shaft (5) is provided with a beveling chute (32) corresponding to the rectangular chute (29), and the rectangular chute (29) and the beveling chute (32) form a sliding cavity;
the sliding block (20) is composed of a transverse bar and an abutting block perpendicular to the transverse bar, wherein the rotating shaft (5) is further provided with an axial groove (31) with the same axial direction at the shaft section of the inclined chute (32), the abutting block is arranged in the axial groove (31) and abuts against the transverse bar;
the head of the loop bar (15) is also abutted against the rear side of the abutting block;
the orientation of the transverse bar is vertical to the orientation of the rotating shaft (5), two ends of the transverse bar are respectively connected with a third piston (27), the third pistons (27) are correspondingly provided with third piston cavities (26), the third piston cavities (26) are arranged in the butterfly plates (7), the other sides of the third piston cavities (26) are also communicated with an annular oil cavity (21), and the reciprocating movement of the third pistons (27) can drive the oil pressure in the annular oil cavity (21) to change; a return spring (28) is arranged between the two ends of the transverse bar and the third piston cavity (26);
the butterfly plate (7) is further provided with an annular notch on the radial outer side of the annular oil cavity (21), a scroll spring (24) is arranged on the inner side of the annular notch in a surrounding mode, an elastic sealing ring (25) is arranged on the outer side of the scroll spring (24) in a close fit mode, a plurality of fourth piston cavities (22) are arranged on an annular interlayer between the annular oil cavity (21) and the annular notch, a fourth piston (23) is arranged in the fourth piston cavity (22), the fourth piston cavity (22) is communicated with the annular oil cavity (21) and the annular notch, and a transverse piece is connected to a piston rod end head of the fourth piston (23) and is in butt joint with the scroll spring (24).
2. A high-pressure pneumatic actuator valve as claimed in claim 1, characterized in that the radial width of the first chamber (3) is larger than that of the second chamber (1), a first piston (10) is arranged in the first chamber (3), a second piston (13) is arranged in the second chamber (1), the first piston (10) and the second piston (13) are connected through a cylindrical frame (14), a notch is arranged in the middle shaft section of the cylindrical frame (14), a connecting rod (11) is hinged in the cylindrical frame (14) at a position close to the first piston (10), the other end of the connecting rod (11) is hinged with a swinging rod (12) arranged outside the notch, and the other end of the swinging rod (12) is connected with the rotating shaft (5).
3. A high-pressure pneumatic actuator valve as claimed in claim 2, characterized in that a connecting table is arranged between the first chamber (3) and the second chamber (1), the connecting table is provided with a shaft-shaped groove, the cylindrical frame (14) passes through the shaft-shaped groove and is respectively connected with the first piston (10) and the second piston (13), a sectional spring (9) is further arranged between the connecting table and the first piston (10), the sectional spring (9) is formed by connecting the first spring (8) and the second spring (19), the first spring (8) and the second spring (19) are respectively in different shaft sections, the elastic force of the first spring (8) is greater than that of the second spring (19), the first spring (8) and the second spring (19) are coaxial, and the compressible stroke of the first spring (8) is greater than that of the second spring (19).
4. A high-pressure pneumatic actuator valve as claimed in claim 2, wherein the valve tube is provided with an air flow input end and an air flow output end, wherein the wall of the valve tube (6) at one side of the air flow output end is provided with a safety valve which is communicated with the inner side of the valve tube (6), the safety valve is also connected with an air duct (2), and the other end of the air duct (2) is communicated with the second chamber (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202410164628.9A CN117704081B (en) | 2024-02-05 | 2024-02-05 | High-pressure pneumatic execution valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410164628.9A CN117704081B (en) | 2024-02-05 | 2024-02-05 | High-pressure pneumatic execution valve |
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| CN117704081A CN117704081A (en) | 2024-03-15 |
| CN117704081B true CN117704081B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202410164628.9A Active CN117704081B (en) | 2024-02-05 | 2024-02-05 | High-pressure pneumatic execution valve |
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| CN117704081A (en) | 2024-03-15 |
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