CN113566012B - Pneumatic actuator structure of quick switch pulse valve - Google Patents
Pneumatic actuator structure of quick switch pulse valve Download PDFInfo
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- CN113566012B CN113566012B CN202110863289.XA CN202110863289A CN113566012B CN 113566012 B CN113566012 B CN 113566012B CN 202110863289 A CN202110863289 A CN 202110863289A CN 113566012 B CN113566012 B CN 113566012B
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- guide rail
- guide
- sleeve
- piston
- rail
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
- F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
- F16K5/0647—Spindles or actuating means
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention discloses a pneumatic actuator structure of a quick-switching pulse valve, which comprises the following components: the guide rail comprises a guide rail sleeve, wherein the side wall of the guide rail sleeve is provided with a closed guide rail in a penetrating way, the guide rail comprises a pair of branch guide rails which are symmetrical with respect to the central axis of the guide rail sleeve, each branch guide rail comprises a vertical rail and a spiral rail communicated with the vertical rail to form a conversion angle, and a guide block is arranged at each conversion angle to open/close the vertical rail; the side wall of the guide post is provided with a rolling shaft which is arranged in the guide rail in a sliding way, and the bottom of the guide post protrudes out of the guide rail sleeve and is fixedly connected with the valve rod of the ball valve; and the air cylinder is detachably connected with the guide rail sleeve so as to drive the guide rail sleeve to reciprocate up and down along the guide post, so that the rolling shaft circumferentially slides in the guide rail. The invention has the beneficial effects that the time generated by stopping when the ball valve is opened to closed or closed to open caused by the forward and reverse strokes of the existing air cylinder is saved, and the integral movement time of the valve is greatly improved.
Description
Technical Field
The invention relates to the field of dust removing equipment. More particularly, the present invention relates to a rapid switching pulse valve pneumatic actuator configuration.
Background
The switching speed of the pneumatic pulse back-flushing valve (pulse valve) determines the good regeneration effect and bad regeneration effect of a filter element in the dust removing device, the existing actuator structure is mostly reciprocating, and the opening or closing action of a ball valve of the pulse valve is completed by respectively pushing the ball valve to respectively perform clockwise and anticlockwise motions through respectively performing forward and reverse motions of a cylinder piston in an actuating mechanism. The piston actuator configuration has a dwell process on the cylinder piston, either from open to closed or from closed to open, which significantly reduces the overall valve movement time for the need to rapidly open and close the valve.
Disclosure of Invention
It is an object of the present invention to solve at least the above problems and to provide a rapid switching pulse valve pneumatic actuator structure that saves the time from the opening to the closing or from the closing to the opening of the ball valve caused by the two strokes of the forward and reverse direction of the existing cylinder piston, and greatly increases the overall movement time of the valve.
To achieve these objects and other advantages and in accordance with the purpose of the invention, a rapid switching pulse valve pneumatic actuator structure is provided, comprising:
the guide rail comprises a guide rail sleeve, wherein the side wall of the guide rail sleeve is provided with a closed guide rail in a penetrating way, the guide rail comprises a pair of branch guide rails which are symmetrical with respect to the central axis of the guide rail sleeve, each branch guide rail comprises a vertical rail and a spiral rail communicated with the vertical rail to form a conversion angle, and a guide block is arranged at each conversion angle to open/close the vertical rail;
the side wall of the guide post is provided with a rolling shaft which is arranged in the guide rail in a sliding way, and the bottom of the guide post protrudes out of the guide rail sleeve and is fixedly connected with the valve rod of the ball valve;
and the piston of the cylinder is detachably connected with the guide rail sleeve so as to drive the guide rail sleeve to reciprocate up and down along the guide post, so that the roller slides circumferentially in the guide rail.
Preferably, the piston is arranged in a cylinder body; the top of the cylinder body is provided with an upper air inlet and outlet hole, the side wall of the cylinder body is provided with a side air inlet and outlet hole, the bottom of the cylinder body is provided with at least one air outlet hole, and the inner wall of the cylinder body positioned below the side air inlet and outlet hole protrudes to form a step; the piston comprises a large-caliber end and a small-caliber end which are connected in sequence, the outer wall where the small-caliber end is positioned is in sliding sealing connection with the inner wall of the cylinder body where the step is positioned, and the large-caliber end is in sliding sealing connection with the inner wall of the cylinder body which is positioned above the step; when the piston descends to the lowest position, the large-caliber end of the piston is positioned above the air inlet and outlet holes;
the piston is coaxially sleeved outside the guide rail sleeve, and the top of the piston is detachably connected with the top of the guide rail sleeve; the bottom of the guide post penetrates through the bottom of the cylinder body, and the guide post is rotationally connected with the bottom of the cylinder body.
Preferably, the piston and guide rail sleeve are arranged on the same side of the piston, and the piston is connected with the guide rail sleeve in a detachable mode.
Preferably, the guide block is located at the bottom end of the vertical rail, and when the guide block closes the vertical rail, the side wall of the guide block, which faces the spiral rail, is matched with the upper inner wall of the spiral rail, so as to guide the roller to slide along the spiral rail.
Preferably, a bracket is arranged on the outer wall of the positioning sleeve, a guide block penetrating hole is arranged on the outer wall of the positioning sleeve below the bracket, and one end of the guide block is hinged with the bracket torsion spring; the upper top surface of the guide block, which is positioned in the vertical track, is inclined and is used for guiding the rolling shaft to push away the guide block; when the external force makes the guide block swing outwards, the guide block opens the vertical track, and when the external force disappears, the guide block returns to the vertical track and closes the vertical track.
Preferably, the roller comprises a cylindrical shaft and a needle bearing coaxially and rotatably connected with the cylindrical shaft.
Preferably, the number of the rollers is two, and the two rollers are symmetrical with respect to the central axis of the guide rail sleeve.
Preferably, the air outlet hole is an L-shaped air outlet channel, a buffer spring is arranged in a channel in the vertical direction in the air outlet channel, and the buffer spring protrudes out of the bottom wall in the cylinder body.
Preferably, a pair of vertical limiting sliding grooves are formed in the bottom of the piston, a pair of vertical limiting blocks are arranged on the bottom wall in the cylinder body, each limiting block corresponds to one limiting sliding groove, and the limiting blocks are inserted into the corresponding limiting sliding grooves.
Preferably, the piston, the positioning sleeve and the guide rail sleeve are coaxial.
The invention at least comprises the following beneficial effects:
firstly, according to the invention, by designing the vertical track, the spiral track, the guide post, the roller and the piston, in an initial state, the guide block is positioned in the vertical track, when the ball valve needs to be rapidly opened and closed, the cylinder drives the guide rail sleeve to move for one stroke, the roller moves along the spiral track due to the effect of the guide block, and when the roller moves from one end of the spiral track to the other end, the guide post rotates 180 degrees, and the ball valve is rapidly opened and closed; when the ball valve is rapidly opened and closed, the roller is not only positioned at the other end of the spiral track, but also is actually positioned at one end of the other vertical track, at the moment, the guide block is opened to enable the vertical track, and after the cylinder drives the guide rail sleeve to reversely move for one stroke, the roller descends to one end of the other spiral track along the vertical track, so that a next instruction for rapidly opening and closing the ball valve can be waited; the ball valve is reasonable in design on the whole, the ball valve can be rapidly opened and closed on one stroke of the air cylinder, the time from opening to closing or stopping to opening of the ball valve caused by the forward and reverse strokes of the existing air cylinder is saved, and the overall movement time of the valve is greatly prolonged.
The second, the invention provides a convenient and quick connection mode through designing the locating sleeve and the flange plate, can quickly locate, and connects the guide rail sleeve and the piston through the locating sleeve, thereby being convenient to operate.
Thirdly, the side wall of the guide block facing the spiral track is designed to be matched with the upper inner wall of the spiral track, so that the guide block can be quickly and smoothly guided into the spiral track.
Fourth, the invention through designing the support, guide block through hole, torsional spring, and make the upper top surface of the guide block incline, when the guide block is located in vertical orbit, the roller shaft moves down in the vertical orbit until contact with guide block top surface, the roller shaft can move down along upper top surface of the guide block at this moment, and push the guide block outwards, the vertical orbit opens at this moment, the roller shaft can slide down to the bottom end of the vertical orbit smoothly and enter the bottom end of the spiral orbit connected with said vertical orbit, after the roller shaft breaks away from the guide block, the guide block loses the external force that the roller shaft exerts, under the function of torsional spring, quickly reverts to the vertical orbit, the vertical orbit is closed at this moment, and one side of the guide block facing spiral orbit is identical with upper inner wall of the spiral orbit, can guide the roller shaft to enter the spiral orbit; the bracket and the torsion spring are convenient to draw materials, the installation is quick, and the elasticity of the torsion spring is large, so that the guide block can be quickly restored to the vertical track.
Fifth, the invention utilizes rolling friction to reduce friction force and improve the smoothness of the roller movement by designing the cylindrical shaft and the needle roller bearing.
Sixth, the invention designs two rollers which are symmetrical about the central axis of the guide rail sleeve, so that the structure is stable and the stability of the device is improved.
Seventh, the invention accords with practical application by designing the L-shaped exhaust channel and the buffer spring, and the buffer spring can buffer the impact force applied to the bottom of the cylinder when the piston is pressed down, so that the cylinder can be protected, and the service life of the cylinder can be prolonged.
Eighth, the invention avoids the phenomenon that the piston rotates when the guide post rotates by designing the limiting block and the limiting chute, thereby improving the practicability of the device.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic structural view of a pneumatic actuator of a rapid switching pulse valve according to one embodiment of the present invention;
FIG. 2 is a schematic diagram of a connection relationship between the piston and the stopper according to one embodiment of the present invention;
FIG. 3 is a schematic diagram of the positional relationship among the guide post, the limiting block and the ball valve according to one embodiment of the present invention;
FIG. 4 is a schematic diagram showing the positional relationship between the positioning sleeve and the limiting block according to one embodiment of the present invention;
FIG. 5 is a schematic structural view of a guide rail sleeve according to one embodiment of the present invention;
FIG. 6 is a schematic structural view of the positioning sleeve according to one embodiment of the present invention;
FIG. 7 is a schematic structural view of the guide block and the spiral track according to one embodiment of the present invention;
FIG. 8 is a schematic diagram of the connection relationship between the bracket and the torsion spring according to one embodiment of the present invention.
Reference numerals: 1-an upper end cover; 2-a lower end cap; 3-ball valve; 4-a valve rod; 5-a guide post; 6-a piston; 7, positioning sleeves; 8, a guide rail sleeve; 9-upper air inlet and outlet holes; 10-a side inlet and outlet hole; 11-an air outlet hole; 12-limiting blocks; 13-a buffer spring; 14-a guide block; 15-spiral track; 16-vertical track; 17-cylinder; 18-a flange plate; 19-a roller; 20-connecting rods; 21-a bracket; 22-torsion springs; 23-conversion angle.
Detailed Description
The present invention is described in further detail below with reference to the drawings to enable those skilled in the art to practice the invention by referring to the description.
It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1-8, the present invention provides a rapid switching pulse valve pneumatic actuator structure, comprising:
a guide rail sleeve 8, the side wall of which is provided with a closed guide rail in a penetrating way, the guide rail comprises a pair of branch guide rails which are symmetrical with respect to the central axis of the guide rail sleeve 8, each branch guide rail comprises a vertical rail 16 and a spiral rail 15 which is communicated with the vertical rail 16 to form a conversion angle 23, wherein a guide block 14 is arranged at each conversion angle 23 to open/close the vertical rail 16;
the side wall of the guide post 5 is provided with a rolling shaft 19, the rolling shaft 19 is slidably arranged in the guide rail, and the bottom of the guide post 5 protrudes out of the guide rail sleeve 8 and is fixedly connected with the valve rod 4 of the ball valve 3;
the piston 6 of the air cylinder is detachably connected with the guide rail sleeve 8 so as to drive the guide rail sleeve 8 to reciprocate up and down along the guide post 5, so that the rolling shaft 19 slides in the circumferential direction in the guide rail;
in the above technical solution, the transition angle 23 is a place where the vertical rail 16 is communicated with the spiral rail 15, and the transition angle 23 may be a place where the bottom end of the spiral rail 15 is communicated with the bottom end of the vertical rail 16, or may be a place where the top end of the spiral rail 15 is communicated with the top end of the vertical rail 16; a guide block 14 is arranged at each conversion angle 23, so that the guide block 14 can be positioned at the bottom end of the vertical rail 16 or at the top end of the vertical rail 16; when the guide block 14 is positioned at the bottom end of the vertical track 16, the initial position of the roller 19 is positioned at the bottom end of the spiral track 15, the cylinder drives the guide rail sleeve 8 to move downwards, the roller 19 moves to the top end along the bottom end of the spiral track 15, and the guide post 5 and the valve rod 4 continuously rotate 180 degrees, so that the ball valve 3 can be rapidly opened and closed; when the roller 19 is positioned at the top end of the spiral track 15, the roller 19 is also positioned in the vertical track 16, in order to restore the roller 19 to the bottom end of the spiral track 15, the guide block 14 is separated from the vertical track 16 to open the vertical track 16, then the air cylinder drives the guide rail sleeve 8 to move upwards, the roller 19 descends to the bottom end of the spiral track 15 along the vertical track 16, at the moment, the roller 19 is restored to the bottom end of the other spiral track 15, and the next instruction of quick switching of the ball valve 3 can be waited; when the guide block 14 is positioned at the top end of the vertical track 16, the initial position of the roller 19 is positioned at the top end of the spiral track 15, the cylinder drives the guide rail sleeve 8 to move upwards, the roller 19 moves to the bottom end along the top end of the spiral track 15, the guide post 5 and the valve rod 4 continuously rotate 180 degrees in the process, so that the ball valve 3 can be rapidly opened and closed, when the roller 19 is positioned at the bottom end of the spiral track 15, the roller 19 is also positioned in the vertical track 16, in order to restore the roller 19 to the top end of the spiral track 15, the guide block 14 is separated from the vertical track 16 to open the vertical track 16, then the cylinder drives the guide rail sleeve 8 to move downwards, the roller 19 moves upwards to the top end of the spiral track 15 along the vertical track 16, and the roller 19 returns to the top end of the other spiral track 15 at the moment, and can wait for the next command for rapidly opening and closing the ball valve 3; the cylinder and cylinder piston are devices well known to those skilled in the art; the connection between the cylinder piston and the guide rail sleeve can be screw connection or clamping connection;
in the technical scheme, in the use process, in the initial state, the guide block 14 is positioned in the vertical track 16, when the ball valve 3 needs to be rapidly opened and closed, the cylinder drives the guide rail sleeve 8 to move for one stroke, the roller 19 moves along the spiral track 15 due to the effect of the guide block 14, when the roller 19 moves from one end of the spiral track 15 to the other end, the guide post 5 continuously rotates for 180 degrees, the ball valve 3 continuously rotates for 90 degrees to be opened, and then continuously rotates for 90 degrees to be closed, so that the rapid opening and closing of the ball valve are realized; when the ball valve 3 is rapidly opened and closed, the roller 19 is not only positioned at the other end of the spiral track 15, but actually the roller 19 is also positioned at one end of the other vertical track 16, at this time, the guide block 14 is opened to enable the vertical track 16, and after the cylinder drives the guide rail sleeve 8 to reversely move for one stroke, the roller 19 descends to one end of the other spiral track 15 along the vertical track 16, so that a command of rapidly opening and closing the ball valve 3 can be waited for next time;
by adopting the technical scheme, the ball valve has the beneficial effects that through the design of the vertical track 16, the spiral track 15, the guide post 5, the roller 19 and the piston 6, the design and the layout are reasonable, the ball valve is directly rotated by 180 degrees, the quick switching of the ball valve can be realized on one stroke of the cylinder, the time from the switching of the ball valve 3 caused by the forward and reverse strokes of the existing cylinder to the stop of the ball valve from the switching or from the switching to the switching is saved, and the integral movement time of the valve is greatly improved.
In another embodiment, the piston 6 is disposed in a cylinder 17; the top of the cylinder body 17 is provided with an upper air inlet and outlet hole 9, the side wall is provided with a side air inlet and outlet hole 10, the bottom is provided with at least one air outlet hole 11, and the inner wall of the cylinder body 17 positioned below the side air inlet and outlet hole 10 protrudes to form a step; the piston 6 comprises a large-caliber end and a small-caliber end which are connected in sequence, the outer wall where the small-caliber end is positioned is in sliding sealing connection with the inner wall of the cylinder body 17 where the step is positioned, and the large-caliber end is in sliding sealing connection with the inner wall of the cylinder body 17 above the step; when the piston 6 descends to the lowest position, the large-caliber end of the piston 6 is positioned above the air inlet and outlet holes 10;
the piston 6 is coaxially sleeved outside the guide rail sleeve 8, and the top of the piston 6 is detachably connected with the top of the guide rail sleeve 8; the bottom of the guide post 5 passes through the bottom of the cylinder 17, and the guide post 5 is rotationally connected with the bottom of the cylinder 17;
in the above technical solution, the cylinder comprises a cylinder body 17 and a piston 6; the top of the cylinder body 17 is an upper end cover 1, and the bottom is a lower end cover 2; the upper air inlet and outlet hole 9 is arranged at the center of the upper end cover 1, the side air inlet and outlet hole 10 is arranged at the side wall of the cylinder 17, the upper air inlet and outlet hole 9 and the side air inlet and outlet hole 10 can both be used for air inlet and outlet, the upper air inlet and outlet hole 9 and the side air outlet hole 10 are respectively or both connected with an air supply device, the air supply device is controlled by an electromagnetic valve, the air inlet and outlet of the upper air inlet and outlet hole 9 and the side air outlet hole 10 can be controlled, and the air supply device and the electromagnetic valve are common devices for the person skilled in the art; the air outlet holes 11 are arranged on the lower end cover 2 in a penetrating way, and the number of the air outlet holes 11 can be one, two, three, four and the like; the shape of the piston 6 is matched with the inner wall of the cylinder body 17, and when the piston 6 descends to the lowest position, the large-caliber end of the piston 6 is positioned above the air inlet and outlet holes 10, so that air is conveniently fed from the air inlet and outlet holes 10, and the piston 6 is driven to move upwards; the top of the piston 6 is detachably connected with the top of the guide rail sleeve 8, and the detachable connection mode can be screw connection or clamping connection, so that the piston 6 and the guide rail sleeve 8 can be conveniently installed; a bearing is arranged in the lower end cover 2, and the guide post 5 is rotationally connected with the lower end cover 2 of the cylinder body 17 through the bearing;
in the technical scheme, when the guide block 14 is positioned at the bottom end of the vertical track 16 in the use process, the upper air inlet and outlet hole 9 of the upper end cover 1 is used for air inlet, the air pressure at the upper part of the piston 6 is increased to push the piston 6 and the guide rail sleeve 8 to move downwards vertically, meanwhile, the roller 19 on the guide column 5 moves along the spiral track 15 to enable the guide column 5 to rotate 180 degrees to drive the valve to continuously rotate 90 degrees to open the valve and continuously rotate 90 degrees to close the valve, and in the process, the side air inlet and outlet holes 10 and the air outlet holes 11 are used for air exhaust; when the air inlet and outlet holes 10 are in air, the piston 6 moves upwards, meanwhile, the rolling shaft 19 on the guide post 5 descends to the bottom end of the other spiral track 15 along the vertical track 16, and in the process, the guide post 5 and the valve rod 4 connected with the guide post 5 do not act, and can wait for the instruction of the next quick switching of the ball valve 3;
by adopting the technical scheme, the beneficial effects that through designing cylinder body 17, going up business turn over gas pocket 9, entering and exiting hole 10, venthole 11, piston 6, provided a drive arrangement, it is rationally distributed, can effectively drive piston 6 reciprocating motion from top to bottom when saving space, and then drive roller 19 and move in guide rail sleeve 8 circumference, finally drive the valve rotation, realize ball valve 3's quick switch.
In another technical scheme, the piston type hydraulic oil pump further comprises a positioning sleeve 7, wherein the positioning sleeve 7 is positioned between the piston 6 and the guide rail sleeve 8, the top of the positioning sleeve 7 is provided with a flange 18, and the flange 18 is detachably connected with the tops of the piston 6 and the guide rail sleeve 8 respectively;
in the above technical solution, the top of the positioning sleeve 7 is a flange 18, and the flange 18 is detachably connected with the top of the piston 6 and the top of the guide rail sleeve 8 respectively, where the detachable connection mode may be screw connection or clip connection; by adopting the technical scheme, the beneficial effects that, through design locating sleeve 7, ring flange 18, provided a convenient, swift connected mode, can fix a position fast to link together guide rail cover 8 and piston 6 through the locating sleeve, convenient operation.
In another technical solution, the guide block 14 is located at the bottom end of the vertical rail 16, and when the guide block 14 closes the vertical rail 16, the side wall of the guide block 14 facing the spiral rail 15 is matched with the upper inner wall of the spiral rail 15, so as to guide the roller 19 to slide along the spiral rail 15;
by adopting the technical scheme, the beneficial effects are that the guide block 14 can be quickly and smoothly guided into the spiral track 15 by designing the guide block 14 to be matched with the upper inner wall of the spiral track 15 towards the side wall of the spiral track 15; by designing the guide block 14 at the bottom end of the vertical rail 16, the roller 19 only moves along the circumference of the guide rail sleeve 8 when the piston 6 is pressed down, and the quick opening and closing effect of the ball valve 3 is ensured.
In another technical scheme, a bracket 21 is arranged on the outer wall of the positioning sleeve 7, a guide block 14 penetrating hole is arranged on the outer wall of the positioning sleeve 7 positioned below the bracket 21, and one end of the guide block 14 is hinged with a torsion spring 22 of the bracket 21; the upper top surface of the guide block 14 in the vertical track 16 is inclined for guiding the roller 19 to push the guide block 14 away; when the external force swings the guide block 14 outwards, the guide block 14 opens the vertical rail 16, and when the external force disappears, the guide block 14 returns to the vertical rail 16 and closes the vertical rail 16;
in the above technical solution, as shown in fig. 8, the bracket 21 includes a horizontal shaft and a supporting rod for supporting the horizontal shaft, the supporting rod is fixedly connected with the outer wall of the positioning sleeve 7, a connecting rod 20 is disposed at the top of the guide block 14, and one end of the connecting rod 20 away from the guide block 14 is hinged with the horizontal rod, so that the guide block 14 can swing outwards; the horizontal rod is sleeved with a torsion spring 22, one end of the torsion spring 22 is propped against the connecting rod 20, and the other end is propped against the outer wall of the positioning sleeve 7, so that the guide block 14 can return to the vertical rail 16 under the action of the torsion spring 22 after being pushed outwards; the upper top surface of the guide block 14 in the vertical track 16 is inclined in a direction designed to facilitate the sliding down of the roller 19;
in this technical scheme, when the guide block 14 is located in the vertical track 16, the roller 19 moves down in the vertical track 16 to contact with the top surface of the guide block 14, at this time, the roller 19 can move down along the upper top surface of the guide block 14 and push the guide block 14 outwards, at this time, the vertical track 16 is opened, the roller 19 can slide down smoothly to the bottom end of the vertical track 16 and enter the bottom end of the spiral track 15 connected with the vertical track 16, after the roller 19 is separated from the guide block 14, the guide block 14 loses the external force exerted by the roller 19, and returns to the vertical track 16 quickly under the action of the torsion spring 22, at this time, the vertical track is closed, and the surface of the guide block 14 facing the spiral track 15 is matched with the upper inner wall of the spiral track 15, so that the roller 19 can be guided into the spiral track 15; the bracket 21 and the torsion spring 22 are convenient to obtain materials, the installation is quick, and the elasticity of the torsion spring 22 is large, so that the guide block 14 can be quickly restored to the vertical track 16.
In another embodiment, the roller 19 includes a cylindrical shaft and a needle bearing coaxially and rotatably connected to the cylindrical shaft, and the needle bearing is a structure well known to those skilled in the art; by adopting the technical scheme, the roller 19 has the beneficial effects that by designing the cylindrical shaft and the needle roller bearing and utilizing rolling friction, the friction force is reduced, and the moving smoothness of the roller 19 is improved.
In another technical scheme, the number of the rollers 19 is two, and the two rollers 19 are symmetrical about the central axis of the guide rail sleeve 8; by adopting the technical scheme, the beneficial effects that through designing two rollers 19, two rollers 19 are symmetrical about the center axis of the guide rail sleeve 8, the design makes the structure relatively firm, has improved the stability of device.
In another technical scheme, the air outlet hole 11 is an L-shaped air outlet channel, a buffer spring 13 is arranged in a channel in the vertical direction in the air outlet channel, the buffer spring 13 protrudes out of the inner bottom wall of the cylinder 17, namely, the buffer spring 13 protrudes out of the lower end cover 2, the design of the L-shaped air outlet channel accords with practical application, and the buffer spring 13 is used for buffering impact force applied to the bottom wall of the cylinder when the piston 6 is pressed down; by adopting the technical scheme, the beneficial effect that through design L type exhaust passage, buffer spring 13, accord with practical application, and buffer spring 13 can cushion the impact force that piston 6 applied to the cylinder bottom when pushing down, can protect the cylinder, prolongs its life.
In another technical scheme, as shown in fig. 2 (the cylinder 17 is not shown in the drawing), a pair of vertical limiting sliding grooves are formed in the bottom of the piston 6, a pair of vertical limiting blocks 12 are formed in the inner bottom wall of the cylinder 17, each limiting block 12 corresponds to one limiting sliding groove, and the limiting blocks 12 are inserted into the corresponding limiting sliding grooves; specifically, a pair of limiting blocks 12 are arranged on the lower end cover 2, and a pair of limiting sliding grooves are symmetrical about the central axis of the piston 6; by adopting the technical scheme, the device has the beneficial effects that through designing the limiting block 12 and the limiting chute, the phenomenon that the piston 6 possibly rotates when the guide post 5 rotates is avoided, and the practicability of the device is improved.
In another technical scheme, the piston 6, the positioning sleeve 7 and the guide rail sleeve 8 are coaxial; by adopting the technical scheme, the beneficial effects that the coaxial design of the piston 6, the locating sleeve 7 and the guide rail sleeve 8 can avoid unstable or invalid devices generated by the contact between the side wall of the locating sleeve 7 and the side wall of the guide rail sleeve 8 or the side wall of the piston 6, which possibly occurs due to the eccentricity of the locating sleeve 7, and integrally improve the effectiveness and stability of the devices.
The number of equipment and the scale of processing described herein are intended to simplify the description of the present invention. The application, modification and variation of the structure of the rapid switching pulse valve pneumatic actuator of the present invention will be apparent to those skilled in the art.
Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.
Claims (10)
1. Quick switch pulse valve pneumatic actuator structure, its characterized in that includes:
the guide rail comprises a guide rail sleeve, wherein the side wall of the guide rail sleeve is provided with a closed guide rail in a penetrating way, the guide rail comprises a pair of branch guide rails which are symmetrical with respect to the central axis of the guide rail sleeve, each branch guide rail comprises a vertical rail and a spiral rail communicated with the vertical rail to form a conversion angle, and a guide block is arranged at each conversion angle to open/close the vertical rail;
the side wall of the guide post is provided with a rolling shaft which is arranged in the guide rail in a sliding way, and the bottom of the guide post protrudes out of the guide rail sleeve and is fixedly connected with the valve rod of the ball valve;
and the piston of the cylinder is detachably connected with the guide rail sleeve so as to drive the guide rail sleeve to reciprocate up and down along the guide post, so that the roller slides circumferentially in the guide rail.
2. The rapid switching pulse valve pneumatic actuator structure of claim 1, wherein the piston is disposed within a cylinder; the top of the cylinder body is provided with an upper air inlet and outlet hole, the side wall of the cylinder body is provided with a side air inlet and outlet hole, the bottom of the cylinder body is provided with at least one air outlet hole, and the inner wall of the cylinder body positioned below the side air inlet and outlet hole protrudes to form a step; the piston comprises a large-caliber end and a small-caliber end which are connected in sequence, the outer wall where the small-caliber end is positioned is in sliding sealing connection with the inner wall of the cylinder body where the step is positioned, and the large-caliber end is in sliding sealing connection with the inner wall of the cylinder body which is positioned above the step; when the piston descends to the lowest position, the large-caliber end of the piston is positioned above the air inlet and outlet holes;
the piston is coaxially sleeved outside the guide rail sleeve, and the top of the piston is detachably connected with the top of the guide rail sleeve; the bottom of the guide post penetrates through the bottom of the cylinder body, and the guide post is rotationally connected with the bottom of the cylinder body.
3. The rapid switching pulse valve pneumatic actuator structure of claim 2, further comprising a positioning sleeve, wherein the positioning sleeve is positioned between the piston and the guide rail sleeve, the top of the positioning sleeve is a flange, and the flange is detachably connected with the piston and the top of the guide rail sleeve respectively.
4. The rapid switching pulse valve pneumatic actuator structure of claim 3, wherein the guide block is positioned at the bottom end of the vertical rail, and the guide block is matched with the upper inner wall of the spiral rail toward the side wall of the spiral rail when the guide block closes the vertical rail, so as to guide the roller to slide along the spiral rail.
5. The pneumatic actuator structure of the quick switch pulse valve according to claim 4, wherein a bracket is arranged on the outer wall of the positioning sleeve, a guide block penetrating hole is arranged on the outer wall of the positioning sleeve positioned below the bracket, and one end of the guide block is hinged with the bracket torsion spring; the upper top surface of the guide block, which is positioned in the vertical track, is inclined and is used for guiding the rolling shaft to push away the guide block; when the external force makes the guide block swing outwards, the guide block opens the vertical track, and when the external force disappears, the guide block returns to the vertical track and closes the vertical track.
6. The rapid switching pulse valve pneumatic actuator structure of claim 1, wherein the roller comprises a cylindrical shaft and a needle bearing rotatably coupled coaxially with the cylindrical shaft.
7. The rapid switching pulse valve pneumatic actuator structure of claim 1, wherein the number of rollers is two, and two rollers are symmetrical about a central axis of the guide rail housing.
8. The rapid switching pulse valve pneumatic actuator structure of claim 2, wherein the air outlet is an L-shaped air outlet channel, a buffer spring is arranged in a channel in the vertical direction in the air outlet channel, and the buffer spring protrudes out of the bottom wall in the cylinder body.
9. The pneumatic actuator structure of the quick switch pulse valve according to claim 2, wherein a pair of vertical limiting sliding grooves are formed in the bottom of the piston, a pair of vertical limiting blocks are arranged on the bottom wall in the cylinder body, each limiting block corresponds to one limiting sliding groove, and the limiting blocks are inserted into the corresponding limiting sliding grooves.
10. The rapid switching pulse valve pneumatic actuator structure of claim 3, wherein the piston, the positioning sleeve, and the guide sleeve are coaxial.
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| CN202110863289.XA CN113566012B (en) | 2021-07-29 | 2021-07-29 | Pneumatic actuator structure of quick switch pulse valve |
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| CN202110863289.XA CN113566012B (en) | 2021-07-29 | 2021-07-29 | Pneumatic actuator structure of quick switch pulse valve |
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| CN113566012B true CN113566012B (en) | 2023-07-14 |
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|---|---|
| CN113566012A (en) | 2021-10-29 |
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