CN110440032B - Multi-station pneumatic reversing valve - Google Patents
Multi-station pneumatic reversing valve Download PDFInfo
- Publication number
- CN110440032B CN110440032B CN201910851469.9A CN201910851469A CN110440032B CN 110440032 B CN110440032 B CN 110440032B CN 201910851469 A CN201910851469 A CN 201910851469A CN 110440032 B CN110440032 B CN 110440032B
- Authority
- CN
- China
- Prior art keywords
- hole
- valve
- valve core
- cylinder
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000000149 penetrating effect Effects 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims 1
- 230000008878 coupling Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 3
- 238000005859 coupling reaction Methods 0.000 abstract description 3
- 230000000007 visual effect Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
-
- 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
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
- F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
-
- 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
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
- F16K27/065—Construction of housing; Use of materials therefor of taps or cocks with cylindrical plugs
-
- 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
- F16K5/04—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 cylindrical surfaces; Packings therefor
- F16K5/0407—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 cylindrical surfaces; Packings therefor with particular plug arrangements, e.g. particular shape or built-in means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention provides a multi-station pneumatic reversing valve, which comprises: valve seat, valve core, coupling and power driving system; the power driving system drives the valve core to rotate in the inner cavity of the valve seat through a coupler; the valve seat is provided with an air source air supply port, an air cylinder air supply and exhaust port and an external atmosphere port, and the air source air supply port, the air cylinder air supply and exhaust port and the external atmosphere port are connected with a penetrating loop inside the valve seat; and after the valve core rotates, the valve core is matched with the penetrating loop to realize the switching of the preset working state of the reversing valve. The invention effectively solves the technical problem that the pneumatic reversing valve is used for supplying air to one side of the cylinder when the valve core station is switched, and the other end of the pneumatic reversing valve is required to exhaust air, so that energy loss is caused.
Description
Technical Field
The invention relates to a pneumatic transmission air supply and exhaust device, in particular to a multi-station pneumatic reversing valve for realizing air supply and exhaust conversion by driving a valve core to rotate through rotation of a power driving system.
Background
In the traditional pneumatic circuit, in the stroke of extending or retracting the cylinder, the air inlet end always inputs compressed air in the whole stroke period of the piston operation, the air supply is not stopped until the piston reaches the stroke end, in the process, the movement of the piston works by means of the pressure energy of the compressed air, the speed of the piston is controlled by a corresponding throttle valve, on one hand, the control mode can cause larger throttling pressure loss, on the other hand, the expansion energy of the compressed air is not effectively utilized, the air inlet channel of the previous stroke is converted into an air outlet channel when the piston needs reversing movement, the compressed air in the cavity is discharged into the atmosphere, and the movement of the piston needs an air source to provide new compressed air for doing work, so that the energy of the compressed air is wasted, and the energy is equivalent to the energy for producing the compressed air.
Disclosure of Invention
According to the technical problem that the other end of the pneumatic reversing valve is required to exhaust when the valve core station is switched to supply air to one side of the air cylinder, so that energy loss is caused, the invention provides the novel pneumatic reversing valve, and the valve drives the valve core to rotate through motor driving to realize the multi-station automatic reversing valve for supplying and exhausting conversion, so that the independent control of air inlet and exhaust of the pneumatic actuating element can be realized.
The invention adopts the following technical means:
a multi-position pneumatic reversing valve comprising: valve seat, valve core, coupling and power driving system; the power driving system drives the valve core to rotate in the inner cavity of the valve seat through the coupler; the valve seat is provided with an air source air supply port, an air cylinder air supply and exhaust port and an external atmosphere port, and the air source air supply port, the air cylinder air supply and exhaust port and the external atmosphere port are connected with a through loop inside the valve seat; and after the valve core rotates, the valve core is matched with the penetrating loop to realize the switching of the established working state of the valve.
Further, the through circuit includes:
the first through hole group comprises a first through hole, a second through hole, a third through hole, a fourth through hole and a fifth through hole which can be communicated through corresponding angles of rotation of the valve core; one end of the first through hole is connected with the air source air supply port, and one end of the fifth through hole is connected with an external atmosphere port;
a second through hole group including a sixth through hole, a seventh through hole, an eighth through hole, and a ninth through hole that are communicated; one end of the ninth through hole is connected with the air cylinder air supply and exhaust port;
a third through hole group, wherein the third through hole group is arranged in parallel in the first through hole group, and has the same structure as the first through hole group;
and a fourth group of through holes, the fourth group of through holes being arranged in parallel with the second group of through holes and having the same structure as the second group of through holes.
Further, the valve core is in a cylindrical shape, a first plane and a second plane are milled on the valve core, and a first containing cavity is formed by the first plane and the valve seat; the second plane and the valve seat form a second containing cavity; and in the rotating process of the valve core, the first containing cavity and the second containing cavity are respectively communicated with the penetrating loop.
Further, when the valve core rotates to a first preset angle, air source compressed air is supplied to the rodless cavity through the valve body, and meanwhile, air in the rod cavity of the air cylinder is discharged to the atmosphere through the valve body; when the valve core rotates to a second preset angle, air source compressed air is supplied to the rodless cavity through the valve body, and meanwhile, the air sealing state of the rod cavity of the air cylinder is maintained; when the valve core rotates to a third preset angle, the gas in the rodless cavity of the cylinder is discharged to the atmosphere through the valve body, and the gas sealing state of the rod cavity of the cylinder is maintained; when the valve core rotates to a fourth preset angle, the airtight state of the rodless cavity gas of the cylinder is maintained, and meanwhile, the rod cavity gas of the cylinder is discharged to the atmosphere through the valve body; when the valve core rotates to a fifth preset angle, the gas in the rodless cavity of the cylinder is discharged to the atmosphere through the valve body, and meanwhile, the gas in the rod cavity of the cylinder is discharged to the atmosphere through the valve body; when the valve core rotates to a sixth preset angle, the gas sealing state of the rodless cavity of the cylinder is maintained, and the gas sealing state of the rod cavity of the cylinder is maintained; when the valve core rotates to a seventh preset angle, the gas in the rodless cavity of the cylinder is discharged to the atmosphere through the valve body, and meanwhile, the gas source compressed gas supplies gas to the rod cavity through the valve body; when the valve core rotates to an eighth preset angle, the airtight state of the rodless cavity of the air cylinder is maintained, and meanwhile, air source compressed air supplies air to the rod cavity through the valve body.
Further, the first preset angle, the second preset angle, the third preset angle, the fourth preset angle, the fifth preset angle, the sixth preset angle, the seventh preset angle and the eighth preset angle all have threshold ranges.
Further, the fourth through hole and the ninth through hole are circular arc-shaped pore canals, and the rest through holes are linear pore canals.
Compared with the prior art, the invention has the following advantages:
1. the invention adopts the rotation of the valve core to replace the traditional axial movement of the valve core to realize the switching of the working position, and has the characteristics of high reaction speed, accurate position and multiple reversing working state positions;
2. the invention can realize the independent control of the air inlet and outlet cavity air inlet and outlet states of the pneumatic execution element, and can independently set the air inlet and outlet time and the air outlet time, thereby realizing the characteristics of reducing the air consumption of the system, improving the running stability of the piston, reducing the stroke end impact and the like.
For the reasons, the invention can be widely popularized in the field of pneumatic transmission air supply and exhaust devices.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic view of a valve according to the present invention.
FIG. 2 is a schematic view of a valve seat structure according to the present invention.
FIG. 2a is a top view of a first through-hole set of a valve seat according to the present invention.
FIG. 2b is a top view of a second through hole set of the valve seat according to the present invention
FIG. 3 is a schematic view of a valve core mechanism according to the present invention.
Fig. 4 is a schematic diagram of the pneumatic circuit in working state 1 in the embodiment.
Fig. 5 is a schematic diagram of the pneumatic circuit in working state 2 in the embodiment.
Fig. 6 is a schematic diagram of the pneumatic circuit in working state 3 in the embodiment.
Fig. 7 is a schematic diagram of the pneumatic circuit in working state 4 in the embodiment.
Fig. 8 is a schematic diagram of the pneumatic circuit in working state 5 in the embodiment.
Fig. 9 is a schematic diagram of the pneumatic circuit in working state 6 in the embodiment.
Fig. 10 is a schematic diagram of the pneumatic circuit in working state 7 in the embodiment.
Fig. 11 is a schematic diagram of the pneumatic circuit in working state 8 in the embodiment.
In the figure: 1. a valve core; 2. a valve seat; 3. a coupling; 4. a power drive system; 101. the upper end face of the valve core; 102. the lower end face of the valve core; 103. a first plane; 104. a second plane; 201. a first through hole; 202. a second through hole; 203. a third through hole; 204. a fourth through hole; 205. a fifth through hole; 206. a sixth through hole; 207. a seventh through hole; 208. eighth through holes; 209. a ninth through hole; 210. an air supply port of the air source; 211. an air cylinder air supply and exhaust port; 212. and an external atmosphere vent.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
As shown in fig. 1-3, the present invention provides a multi-station pneumatic reversing valve comprising: the valve comprises a valve core 1, a valve seat 2, a coupler 3 and a power driving system 4; the power driving system 4 drives the valve core 1 to rotate in the inner cavity of the valve seat 2 through the coupler 3. And after the valve core 1 rotates, the valve core is matched with the penetrating loop to realize the switching of the established working state of the valve. The air supply port 210, the cylinder air supply/exhaust port 211 and the outside air port 212 provided in the valve seat 2 are connected to a through-circuit inside the valve seat 22. The through circuit includes: as shown in fig. 2a, the first through-hole group includes a first through-hole 201, a second through-hole 202, a third second through-hole 203, a fourth second through-hole 204, and a fifth through-hole 205 that can communicate by rotating the valve body 1 by a corresponding angle; one end of the first through hole 201 is connected to the air supply port 210, and one end of the fifth through hole 205 is connected to the external atmosphere port 212. The second through hole group includes, as shown in fig. 2b, a sixth through hole 206, a seventh through hole 207, an eighth through hole 208, and a ninth through hole 209 that are communicated; one end of the ninth through hole 209 is connected to the cylinder air supply/exhaust port 211. The fourth through hole 204 and the ninth through hole 209 are circular arc-shaped holes, and the rest through holes are linear holes. And the third through hole group is arranged in parallel in the first through hole group, and has the same structure as the first through hole group. And a fourth through hole set, where the fourth through hole set is arranged in parallel with the second through hole set, and has the same structure as the second through hole set, and will not be described herein.
Preferably, the valve core 11 is in a cylindrical shape, and a first plane 103 and a second plane 104 are milled on the valve core, and the first plane 103 and the valve seat 22 form a first containing cavity; the second plane 104 and the valve seat 22 form a second containing cavity; the first cavity and the second cavity are respectively communicated with the through loop in the rotating process of the valve core 11. When the valve core 11 rotates to a first preset angle, air source compressed air is supplied to the rodless cavity through the valve body, and meanwhile, air in the rod cavity of the air cylinder is discharged to the atmosphere through the valve body; when the valve core 11 rotates to a second preset angle, air source compressed air is supplied to the rodless cavity through the valve body, and meanwhile, the air sealing state of the rod cavity of the air cylinder is maintained; when the valve core 11 rotates to a third preset angle, the gas in the rodless cavity of the cylinder is discharged to the atmosphere through the valve body, and the gas sealing state of the rod cavity of the cylinder is maintained; when the valve core 11 rotates to a fourth preset angle, the airtight state of the cylinder rodless cavity gas is maintained, and meanwhile, the cylinder rod cavity gas is discharged to the atmosphere through the valve body; when the valve core 11 rotates to a fifth preset angle, the gas in the rodless cavity of the cylinder is discharged to the atmosphere through the valve body, and the gas in the rod cavity of the cylinder is discharged to the atmosphere through the valve body; when the valve core 11 rotates to a sixth preset angle, the gas sealing state of the rodless cavity of the cylinder is maintained, and the gas sealing state of the rod cavity of the cylinder is maintained; when the valve core 11 rotates to a seventh preset angle, the gas in the rodless cavity of the cylinder is discharged to the atmosphere through the valve body, and meanwhile, the gas source compressed gas is supplied to the rod cavity through the valve body; when the valve core 11 rotates to an eighth preset angle, the cylinder rod-free cavity is kept in a gas-tight state, and meanwhile, gas source compressed gas supplies gas to the rod cavity through the valve body. The first preset angle, the second preset angle, the third preset angle, the fourth preset angle, the fifth preset angle, the sixth preset angle, the seventh preset angle and the eighth preset angle all have threshold ranges.
When the valve core 1 rotates to a first preset angle, the first through hole of the first through hole group is communicated with the seventh through hole, the ninth through hole and the sixth through hole of the second through hole group, and meanwhile, the third through hole of the third through hole group is communicated with the sixth Kong Diliu through hole and the ninth through hole of the fourth through hole group; when the valve core 1 rotates to a second preset angle, the first through hole of the first through hole group is communicated with the seventh through hole of the second through hole group, the ninth through hole is communicated with the sixth through hole, and the sixth through hole of the fourth through hole group, the ninth through hole and the eighth through hole are communicated; when the valve core 1 rotates to a third preset angle, the fifth through hole, the fourth through hole, the second through hole of the first through hole group are communicated with the seventh through hole, the ninth through hole and the sixth through hole of the second through hole group, and the sixth through hole, the eighth through hole and the ninth through hole of the fourth through hole group are communicated; when the valve core 1 rotates to a fourth preset angle, the sixth through hole, the eighth through hole and the ninth through hole of the second through hole group are communicated, and meanwhile, the second through hole, the fourth through hole and the fifth through hole of the third through hole group are communicated with the seventh through hole, the ninth through hole and the sixth through hole of the fourth through hole group; when the valve core 1 rotates to a fifth preset angle, the third through hole, the fourth through hole and the fifth through hole of the first through hole group are communicated with the sixth through hole and the ninth through hole of the second through hole group, and meanwhile, the second through hole, the fourth through hole and the fifth through hole of the third through hole group are communicated with the seventh through hole, the ninth through hole and the sixth through hole of the fourth through hole group; when the valve core 1 rotates to a sixth preset angle, the sixth through hole, the eighth through hole and the ninth through hole of the second through hole group are communicated, and the second through hole, the third through hole, the fourth through hole and the fifth through hole of the third through hole group are communicated; when the valve core 1 rotates to a seventh preset angle, the second through hole, the fourth through hole, the fifth through hole and the seventh through hole, the ninth through hole and the sixth through hole of the second through hole group are communicated, and the first through hole of the third through hole group is communicated with the eighth through hole, the ninth through hole and the sixth through hole of the fourth through hole group; when the valve core 1 rotates to an eighth preset angle, the second through hole, the third through hole, the fourth through hole and the fifth through hole of the first through hole group are communicated, and the first through hole of the third through hole group is communicated with the eighth through hole, the ninth through hole and the sixth through hole of the second through hole group.
Example 1
The valve in the embodiment comprises a valve core 1, a valve seat 2, a coupler 3 and a power driving system 4, and the structure is shown in figure 1. The valve core 1 is in a cylindrical shaft structure, two planes are milled on the valve core 1 to form two cavities, the cavities formed by the two planes in the rotation process of the valve core 1 are respectively communicated with corresponding through Kong Huilu on the valve seat 2, so that different air supply, air exhaust or 8 reversing working states are realized, and the rotation of the valve core 1 is realized through a power driving system 4. The system gas consumption can be effectively saved.
The working process of the pneumatic valve in the embodiment is as follows: after the system is electrified, the power driving system 4 drives the valve core 1 to rotate by a corresponding angle through the coupler 3, so that the corresponding loops on the valve seat 2 are respectively communicated by the containing cavities formed by the two planes on the valve core 11, and a given reversing working state is realized.
The valve seat 2 is shown in fig. 2, the main structure is a cylinder with the diameter of 90mm and the height of 50mm, a through hole with the diameter of 30mm is formed along the central axis of the cylinder, through loop holes with the diameter of 8mm are processed in the valve body, the through holes are divided into 4 groups, the 4 groups are uniformly distributed on the axial space in the middle of the valve body at intervals of 10mm, the arrangement sequence is that the first through hole group is close to the upper end face of the valve seat 2, and other through hole groups are sequentially arranged inwards. The upper end face of the valve seat 2 is provided with 3M 6 internal threaded holes with the depth of 10mm, the internal threaded holes are used for fixing the valve seat 2, the valve seat 2 structure is conveniently displayed in a three-dimensional perspective mode, in order to avoid shielding, the internal threaded structure on the valve seat 2 is omitted, the positions of partial through hole loops are slightly adjusted, and all the size positions and structures in the real object are mainly described in the specification text. The structures of each group are described in detail to analyze the technical scheme:
the first combined through holes are composed of 5 total through holes, namely a first through hole 201, a second through hole 202, a 3 rd through hole 203, a 4 th through hole 204 and a 5 th through hole 205. The first through hole 202 is an air supply loop, one end of the first through hole is communicated with the inner hole of the valve body, the other end of the first through hole is communicated with the plane of the outer boss of the valve body, an internal thread of M8 is processed at the through end of the plane of the outer boss of the valve body, the length of the thread is 10mm, the first through hole 202 is connected with the air supply loop of the air source through a connecting piece in operation, in order to describe other structural positions conveniently, the central axis position of the first through hole 201 is defined as a position of 0 degree in the circumferential direction of the valve seat 2, the central axis position is called a reference circumferential position, two holes with diameters of 8mm and depths of 15mm are processed in the radial direction from the inner hole of the valve seat 2 at the central axis position of the first through hole 201, namely, the positions of 120 degrees and 180 degrees in the clockwise direction of the reference circumferential position, the second through hole 202 and the 3 rd through hole 203 are defined as a second through hole 202 and a 3 rd through hole 203, the second through hole 202 and the 3 rd through hole 203 are communicated through a 4 th through hole 204 in the circumferential direction, the 4 th through hole 204, the diameter is 8mm, the diameter of the circle is 30mm, and the circle center is located on the axis of the valve body. A5 th through hole 205 with the diameter of 8mm is formed in the middle of the 4 th through hole 204 outwards in the radial direction at a position of 150 degrees clockwise from the position of the first through hole 201, one end of the 5 th through hole 205 is communicated with the through hole 4, the other end of the 5 th through hole 205 is communicated with the plane of the outer boss of the valve body, an M8 internal thread is formed at one end of the 5 th through hole 205 communicated with the plane of the outer boss of the valve body as an exhaust hole of the valve, the thread length is 10mm, and the valve is connected with a silencing device in operation and used for eliminating noise in exhaust.
The second combined through holes are composed of 4 sections of through holes, namely a 6 th through hole 206, a 7 th through hole 207, an 8 th through hole 208 and a 9 th through hole 209, and the diameters of the two through holes are all 8mm. The integral axial position of the second group of through holes is positioned at the position 10mm axially inwards of the first group of through holes, the 6 th through hole 206 is an air supply loop, the position 240 DEG in the instantaneous needle direction at the reference circumferential position is radially outwards from the inner cylindrical surface of the valve body to the outer convex platform plane of the valve body and communicated with the 9 th through hole 209, the 6 th through hole 206 and the through end of the surface of the outer convex platform of the valve body are provided with internal threads of M8, the thread length is 10mm, and the air supply loop is connected with the rodless cavity air supply and exhaust loop of the air cylinder through a connecting piece in working; the 7 th through hole 207 is positioned at a reference circumferential position and is 15mm deep outwards from the cylindrical surface of the inner hole of the valve body along the radial direction at a position of 60 degrees in the instantaneous needle direction, one end of the 7 th through hole is communicated with the 9 th through hole 209, and the other end of the 7 th through hole is communicated with the surface of the inner hole of the valve body; the 8 th through hole 208 is positioned at a position of 300 degrees in the reference circumferential position and is 15mm deep outwards from the cylindrical surface of the inner hole of the valve body along the radial direction, one end of the 8 th through hole is communicated with the 9 th through hole 209, and the other end of the 8 th through hole is communicated with the surface of the inner hole of the valve body; the 6 th through hole 206, the 7 th through hole 207 and the 8 th through hole 208 are all communicated through the 9 th through hole 209 along the circular arc in the circumferential direction, the 9 th through hole 209 is a circular ring-shaped pore canal, the radius of the circular arc is 30mm, and the center of the circle is on the axis of the valve body.
The third combined through hole is formed by 5 sections of through holes, the structural form and the function of the third combined through hole are the same as those of the first combined through hole, the second combined through hole is positioned at the position of the second combined through hole, which is 10mm away from the axial direction of the end face 1 side of the valve seat 2, the 5-end through hole is named as the 5 th through hole 205 of the first combined through hole, and the first through hole 201, the second through hole 202, the 3 rd through hole 203, the 4 th through hole 204 and the 5 th through hole 205 are sequentially arranged;
the fourth combined through hole is formed by 4 sections of through holes, the structural form of the fourth combined through hole is the same as that of the second combined through hole, the position of the fourth combined through hole is located at the position of the third combined through hole, which is away from the end face 1 side of the valve seat 2, of the axial distance of 10mm, the fourth combined through hole is similar to that of the second combined through hole in function, the 4 sections of through holes are named as the 4 th through hole 204 of the second combined through hole, and the 6 th through hole 206, the 7 th through hole 207, the 8 th through hole 208 and the 9 th through hole 209 are sequentially formed, and the difference is that the 6 th through hole 206 in the fourth combined through hole is connected with a rod cavity of a cylinder.
The valve core 11 is shown in fig. 3, and the main structure is a cylindrical shaft, two planes are milled on the shaft, the first plane is located at the position of 6mm from the upper end surface of the valve core 11 in the axial direction, the length is 18mm, the depth is 7mm, the second plane is located at the position of 26mm from the upper end surface of the valve core 11 in the axial direction, the length is 18mm, the depth is 7mm, the projection is carried out by taking the direction facing the upper end surface of the valve core 11 as the visual angle, and the second plane is located at the position of 210 DEG clockwise from the first plane.
When the valve core 1 is assembled with the valve seat 2, the valve seat 2 is fixed on a workbench surface through three M6 screws, and the lower end face of the valve core 1 is installed into an inner hole of the valve seat 2 from one side of the upper end face of the valve seat 2 until the upper end face of the valve core 1 is flush with the upper end face of the valve seat 2. And when the direction facing the upper end surface of the valve core 1 is taken as a visual angle, the valve core 1 is rotated to enable the first plane to be located in the range of 45 degrees in the anticlockwise direction and 75 degrees in the clockwise direction of the reference circumferential position, the position is defined as the initial position of the valve core 1, then one end of the lower end surface of the valve core 1 is connected with an output shaft of a power driving system through a coupler, the power driving system is also fixed on a working table, the power output shaft of the power driving system is adjusted to be coaxial with the valve core 1, and a pneumatic pipeline and a circuit pipeline are connected to complete the installation and arrangement of a hardware system.
When the valve core 1 is assembled with the valve seat 2, the valve seat 2 is fixed on a workbench surface through three M6 screws, the end face 2 of the valve core 1 is arranged into an inner hole of the valve seat 2 from one side of the end face 1 of the valve seat 2 until the upper end face of the valve core 1 is flush with the end face 1 of the valve seat 2. The direction facing the upper end face of the valve core 1 is taken as a visual angle to be observed, the valve core 1 is rotated to enable the plane 1 to be located in the range of 45 degrees in the anticlockwise direction and 75 degrees in the clockwise direction of the reference circumferential position, the position is defined as the initial position of the valve core 1, then one end of the end face 2 of the valve core 1 is connected with an output shaft of a power driving system through a coupler, a motor is also fixed on a workbench surface, the output shaft of the power driving system is adjusted to be coaxial with the valve core 1, a pneumatic pipeline and a circuit line are connected, and hardware system installation arrangement is completed. After the control system is set according to the requirements, the system is started to work, and then the pneumatic execution element is subjected to air supply and exhaust control according to the control system instructions.
For the purpose of illustrating the embodiments of the present invention, the present invention is applied to a pneumatic system using a linear piston cylinder as an actuator, and is defined as follows: v1 represents that air source compressed air flows into the rodless cavity of the air cylinder through the valve body; v2 represents that the air source compressed air flows into the rodless cavity of the air cylinder through the valve body; v3 represents venting of compressed gas in the rodless chamber of the cylinder to atmosphere through the valve body; v4 indicates that the compressed gas in the rod cavity of the cylinder is discharged to the atmosphere through the valve body, and the invention is now applied to the pneumatic system taking the linear piston cylinder as an actuating element for describing 8 reversing working state positions of the invention by way of example, as shown in fig. 4-11.
The reversing working state position 1 of the invention is described as follows: the lower plane 1 at the initial installation position communicates the first through hole 201 of the first combined through hole with the 7 th through hole 207, the 9 th through hole 209 and the 6 th through hole 206 of the second combined through hole, and other through holes of the first and second combined through holes are blocked, so that the compressed gas of a gas source is supplied to the rodless cavity through the valve body, namely, the V1 state is opened and the V3 state is closed; at the same time, the plane 2 communicates the 3 rd through hole 203 of the third combined through hole with the 6 th through hole 206 of the fourth combined through hole and the 9 th through hole 209, and the other through holes of the third and fourth combined through holes are plugged, so that the cylinder rod cavity gas is discharged to the atmosphere through the valve body, namely, the state of V4 is opened and the state of V2 is closed, and the state of the invention is defined as a reversing working state position 1, and the reversing working position is also an initial working position of the invention, as shown in fig. 4.
The reversing working state position 2 of the invention is described as follows: under the initial working position, the valve core 1 rotates 30 degrees clockwise by taking the direction facing the upper end surface of the valve core 1 as a visual angle through a power driving system, at the moment, the plane 1 communicates the first through hole 201 of the first combined through hole with the 7 th through hole 207 of the second combined through hole, the 9 th through hole 209 and the 6 th through hole 206, other through holes of the first and second combined through holes are blocked, so that air source compressed air is supplied to a rodless cavity through a valve body, and the V1 state opening and the V3 state closing are realized; at the same time, the plane 2 connects the 6 th through hole 206, the 9 th through hole 209 and the 8 th through hole 208 of the fourth combined through hole, and other through holes of the third and fourth combined through holes are plugged, so that the gas-tight state of the rod cavity of the cylinder, namely, the state of V2 and V4 is kept closed, and the state of the invention is defined as a reversing working state position 2 as shown in fig. 5.
The position 3 of the reversing working state of the invention is described as follows: in the initial working position, the valve core 1 is rotated by 60 degrees clockwise by a power driving system by taking the direction facing the upper end surface of the valve core 1 as a visual angle, at the moment, the plane 1 communicates a 5 th through hole 205, a 4 th through hole 204, a second through hole 202 with a 7 th through hole 207, a 9 th through hole 209 and a 6 th through hole 206 of the second combined through hole, and other through holes of the first and second combined through holes are blocked, so that the rodless cavity gas of the cylinder is discharged to the atmosphere through a valve body, namely, the V3 state is opened and the V1 state is closed; at the same time, the plane 2 communicates the 6 th through hole 206, the 8 th through hole 208 and the 9 th through hole 209 of the fourth combined through hole, and the other through holes of the third and fourth combined through holes are blocked, so that the gas-tight state of the rod cavity of the cylinder, namely, the state of V4 and V2 is kept closed, and the state is defined as a reversing working state position 3, as shown in fig. 6.
The reversing working state position 4 of the invention is described as follows: under the initial working position, the valve core 1 rotates 240 degrees clockwise by taking the direction facing the upper end surface of the valve core 1 as a visual angle through a power driving system, at the moment, the plane 1 communicates the 6 th through hole 206, the 8 th through hole 208 and the 9 th through hole 209 of the second combined through hole, and other through holes of the first and second combined through holes are blocked, so that the gas sealing state of the rodless cavity of the cylinder is kept, namely, the V3 and V1 states are closed; at the same time, the plane 2 communicates the second through hole 202, the 4 th through hole 204, the 5 th through hole 205 of the third combined through hole with the 7 th through hole 207, the 9 th through hole 209, and the 6 th through hole 206 of the fourth combined through hole, and the other through holes of the third and fourth combined through holes are blocked, so that the cylinder rod cavity gas is discharged to the atmosphere through the valve body, namely, the state of V4 is opened, the state of V2 is closed, and the state is defined as a reversing working state position 4, as shown in fig. 7.
The reversing working state position 5 of the invention is described as follows: in the initial working position, the valve core 1 rotates 210 degrees clockwise by taking the direction facing the upper end surface of the valve core 1 as a visual angle through a power driving system, at this time, the plane 1 communicates the first combined through hole 3 through hole 203, the 4 th through hole 204, the 5 th through hole 205 with the second combined through hole 6 through hole 206 and the 9 th through hole 209, and other through holes of the first combined through hole and the second combined through hole are blocked, so that the rodless cavity gas of the cylinder is discharged to the atmosphere through the valve body, namely, the V3 state is opened, and the V1 state is closed; at the same time, the plane 2 communicates the second through hole 202, the 4 th through hole 204, the 5 th through hole 205 of the third combined through hole with the 7 th through hole 207, the 9 th through hole 209, and the 6 th through hole 206 of the fourth combined through hole, and the other through holes of the third and fourth combined through holes are blocked, so that the cylinder rod cavity gas is discharged to the atmosphere through the valve body, namely, the state of V4 is opened, the state of V2 is closed, and the state is defined as a reversing working state position 5, as shown in fig. 8.
The reversing working state position 6 of the invention is described as follows: in the initial working position, the valve core 1 rotates 270 degrees clockwise by taking the direction facing the upper end surface of the valve core 1 as a visual angle through a power driving system, at the moment, the plane 1 communicates the 6 th through hole 206, the 8 th through hole 208 and the 9 th through hole 209 of the second combined through hole, and other through holes of the first and second combined through holes are blocked, so that the gas sealing state of the rodless cavity of the cylinder is kept, namely, the V1 and V3 states are closed; at the same time, the plane 2 connects the second through hole 202, the 3 rd through hole 203, the 4 th through hole 204 and the 5 th through hole 205 of the third combined through hole, and the other through holes of the third and fourth combined through holes are plugged, so that the gas-tight state of the rod cavity of the cylinder is kept, namely, the states of V2 and V4 are closed, and the state is defined as a reversing working state position 6, as shown in fig. 9.
The position 7 of the reversing working state of the invention is described: in the initial working position, the valve core 1 is rotated 90 degrees clockwise by a power driving system by taking the direction facing the upper end face of the valve core 1 as a visual angle, at this time, the plane 1 communicates the first combined through hole, the second through hole 202, the 4 th through hole 204, the 5 th through hole 205 with the second combined through hole, the 7 th through hole 207, the 9 th through hole 209 and the 6 th through hole 206, and other through holes of the first and second combined through holes are blocked, so that the rodless cavity gas of the cylinder is discharged to the atmosphere through the valve body, namely, the V3 state is opened, and the V1 state is closed; at the same time, the plane 2 communicates the first through hole 201 of the third combined through hole with the 8 th through hole 208, the 9 th through hole 209 and the 6 th through hole 206 of the fourth combined through hole, so that the compressed gas of the gas source is supplied to the rod cavity through the valve body, namely, the state of V2 is opened and the state of V4 is closed, and the state is defined as the reversing working state position 7, as shown in fig. 10.
The reversing working state position 8 of the invention is described as follows: in the initial working position, the valve core 1 is rotated by 120 degrees clockwise by a power driving system by taking the direction facing the upper end surface of the valve core 1 as a visual angle, at the moment, the plane 1 communicates the first combined through hole with the second through hole 202, the 3 rd through hole 203, the 4 th through hole 204 and the 5 th through hole 205, and other through holes of the first and second combined through holes are blocked, so that the gas sealing state of the rodless cavity of the cylinder is kept, namely, the V1 and V3 states are closed; at the same time, the plane 2 communicates the first through hole 201 of the third combined through hole with the 8 th through hole 208, the 9 th through hole 209 and the 6 th through hole 206 of the second combined through hole, so that the compressed gas of the gas source can supply gas to the rod cavity through the valve body, namely, the state of V2 is opened and the state of V4 is closed, and the state is defined as a reversing working state position 8, as shown in fig. 11.
The valve core 1 works by means of a power driving system, rotates by 30 degrees, realizes the function of a reversing working state 8 at a position rotated by 150 degrees clockwise by taking the direction facing the upper end face of the valve core 1 as a visual angle, realizes the function of a reversing working state 7 at a position rotated by 180 degrees, realizes the function of a reversing working state 2 at a position rotated by 300 degrees and realizes the function of the reversing working state 1 at a position rotated by 330 degrees.
The invention is not only applicable to the common cylinder pneumatic system described in the specific embodiments, but can be applied to pneumatic systems with pneumatic reversing valve requirements. According to the invention, when the valve core 1 is initially installed, the valve core 1 can be rotated to any working state position according to the user requirement to serve as the initial working state position of the valve core, and the air supply and exhaust scheme required by the user can be realized by adjusting the initial working state position parameter of the system. In addition, the pneumatic system for proportionally regulating the gas flow can also be matched with the power driving system for regulation, the valve core 1 does not need to rotate by taking 30 degrees as a unit and can rotate by a specific angle, so that the sectional area of the air inlet and the air outlet is regulated, the proportional control of the gas flow is realized, and the invention has the advantages of wide application range, good adaptability and strong function.
The invention belongs to the application of fluid transmission and control technology under the mechanical engineering disciplines, combines technical methods and means such as mechanical design, pneumatic transmission and the like, belongs to the technical fusion among the interdisciplines, has high technological content and has very strong practical and popularization values; the rotation mode of the valve core 1 is utilized to replace the traditional axial movement of the valve core 1 to realize station switching, so that the development of a multi-station reversing valve is realized, a new method and a new thinking for developing a new fluid valve member are developed, and the development of fluid transmission and control technology is promoted; the invention can effectively reduce the air consumption of the pneumatic system, improve the efficiency of the pneumatic system, improve the running smoothness of the piston, reduce the stroke end impact, contribute to environment-friendly and green industrial production and have extremely high economic and social benefits.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (5)
1. A multi-position pneumatic reversing valve comprising: the valve comprises a valve core (1), a valve seat (2), a coupler (3) and a power driving system (4); the power driving system (4) drives the valve core (1) to rotate in the inner cavity of the valve seat (2) through the coupler (3); the valve seat (2) is provided with an air source air supply port (210), an air cylinder air supply and exhaust port (211) and an external atmosphere through port (212), and the air source air supply port (210), the air cylinder air supply and exhaust port (211) and the external atmosphere through port (212) are connected with a penetrating loop in the valve seat (2); the valve core (1) is matched with the penetrating loop after rotating to realize the switching of the established working state of the valve;
the through circuit includes:
a first through-hole group including a first through-hole (201), a second through-hole (202), a third through-hole (203), a fourth through-hole (204), and a fifth through-hole (205) that can be communicated by rotating the valve body (1) by a corresponding angle; one end of the first through hole (201) is connected with the air source air supply port (210), and one end of the fifth through hole (205) is connected with the external atmosphere port (212); defining the central axis position of the first through hole (201) as the 0 DEG position of the circumference direction of the valve seat (2), namely the reference circumferential position, processing a second through hole (202) and a third through hole (203) respectively from the inner hole of the valve seat (2) along the radial direction at the positions of 120 DEG and 180 DEG clockwise of the reference circumferential position, wherein the second through hole (202) and the third through hole (203) are communicated through a circular arc fourth through hole (204) along the circumferential direction, the fourth through hole (204) is a circular ring-shaped pore channel, the center of the circle is on the axis of the valve body, a fifth through hole (205) is processed outwards along the radial direction at the middle part of the fourth through hole (204) at the position of 150 DEG clockwise of the position of the first through hole (201), one end of the fifth through hole (205) is communicated with the fourth through hole (204), and the other end of the fifth through hole (205) is communicated with the outer boss plane of the valve body;
a second group of through holes, the second group of through holes comprising a sixth through hole (206), a seventh through hole (207), an eighth through hole (208) and a ninth through hole (209) in communication; one end of the sixth through hole (206) is connected with the cylinder air supply and exhaust port (211); the sixth through hole (206) is positioned at a position of 240 degrees clockwise from the inner cylindrical surface of the valve body to the outer convex surface of the valve body along the radial direction, is communicated with the ninth through hole (209), and is connected with a rodless cavity air supply and exhaust loop of the air cylinder through a connecting piece when the sixth through hole (206) works; the seventh through hole (207) is positioned at a position 60 degrees clockwise from the reference circumferential position, one end of the seventh through hole is communicated with the ninth through hole (209), and the other end of the seventh through hole is communicated with the surface of the inner hole of the valve body; the eighth through hole (208) is positioned at a position of 300 degrees clockwise of the reference circumferential position, one end of the eighth through hole is communicated with the ninth through hole (209), and the other end of the eighth through hole is communicated with the surface of the inner hole of the valve body; the sixth through hole (206), the seventh through hole (207) and the eighth through hole (208) are all communicated through a circular arc ninth through hole (209) along the circumferential direction, the ninth through hole (209) is a circular ring-shaped pore canal, and the center of the circle is on the axis of the valve body;
a third through hole group, wherein the third through hole group is arranged in parallel in the first through hole group, and has the same structure as the first through hole group;
and a fourth group of through holes, the fourth group of through holes being arranged in parallel with the second group of through holes and having the same structure as the second group of through holes.
2. The multi-station pneumatic reversing valve according to claim 1, wherein the valve core (1) is in a cylindrical shape, a first plane (103) and a second plane (104) are milled on the valve core, and the first plane (103) and the valve seat (2) form a first containing cavity; the second plane (104) and the valve seat (2) form a second containing cavity; the first containing cavity and the second containing cavity are respectively communicated with the penetrating loop in the rotating process of the valve core (1).
3. A multi-position pneumatic reversing valve according to claim 2, wherein,
when the valve core (1) rotates to a first preset angle, air source compressed air is supplied to the rodless cavity through the valve body, and meanwhile, air in the rod cavity of the air cylinder is discharged to the atmosphere through the valve body;
when the valve core (1) rotates to a second preset angle, air source compressed air is supplied to the rodless cavity through the valve body, and meanwhile, the air sealing state of the rod cavity of the air cylinder is maintained;
when the valve core (1) rotates to a third preset angle, the gas in the rodless cavity of the cylinder is discharged to the atmosphere through the valve body, and the gas sealing state of the rod cavity of the cylinder is maintained;
when the valve core (1) rotates to a fourth preset angle, the airtight state of the cylinder rodless cavity gas is maintained, and meanwhile, the cylinder rod cavity gas is discharged to the atmosphere through the valve body;
when the valve core (1) rotates to a fifth preset angle, the gas in the rodless cavity of the cylinder is discharged to the atmosphere through the valve body, and meanwhile, the gas in the rod cavity of the cylinder is discharged to the atmosphere through the valve body;
when the valve core (1) rotates to a sixth preset angle, the gas sealing state of the rodless cavity of the cylinder is maintained, and the gas sealing state of the rod cavity of the cylinder is maintained;
when the valve core (1) rotates to a seventh preset angle, the gas in the rodless cavity of the cylinder is discharged to the atmosphere through the valve body, and meanwhile, the gas source compressed gas is supplied to the rod cavity through the valve body;
when the valve core (1) rotates to an eighth preset angle, the cylinder rod-free cavity is kept in a gas sealing state, and meanwhile gas source compressed gas supplies gas to the rod cavity through the valve body.
4. A multi-position pneumatic reversing valve according to claim 3, wherein the first, second, third, fourth, fifth, sixth, seventh and eighth preset angles each have a threshold range.
5. The multi-station pneumatic reversing valve according to claim 1, wherein the fourth through hole (204) and the ninth through hole (209) are circular arc-shaped pore channels, and the rest through holes are linear pore channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910851469.9A CN110440032B (en) | 2019-09-10 | 2019-09-10 | Multi-station pneumatic reversing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910851469.9A CN110440032B (en) | 2019-09-10 | 2019-09-10 | Multi-station pneumatic reversing valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110440032A CN110440032A (en) | 2019-11-12 |
| CN110440032B true CN110440032B (en) | 2024-04-12 |
Family
ID=68439740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910851469.9A Active CN110440032B (en) | 2019-09-10 | 2019-09-10 | Multi-station pneumatic reversing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110440032B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111075788B (en) * | 2019-12-31 | 2022-04-05 | 精诚工科汽车系统有限公司 | Gas circuit converter |
| CN115218004A (en) * | 2021-04-16 | 2022-10-21 | 浙江三花汽车零部件有限公司 | Control valve |
| CN115218001A (en) * | 2021-04-16 | 2022-10-21 | 浙江三花汽车零部件有限公司 | Control valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100665350B1 (en) * | 2005-11-17 | 2007-01-04 | (주)티원엔지니어링 | Directional selecting valve |
| CN105971962A (en) * | 2016-07-15 | 2016-09-28 | 辽宁海裕流体传控系统有限公司 | Single valve core rotation type hydraulic valve driven by single motor |
| CN205841863U (en) * | 2016-06-07 | 2016-12-28 | 威海柏林圣康空氧科技有限公司 | Rotary gas circuit extracts conversion equipment |
| CN107883019A (en) * | 2017-12-11 | 2018-04-06 | 珠海格力电器股份有限公司 | Rotary four-way reversing valve and air conditioner |
| CN109424765A (en) * | 2017-08-28 | 2019-03-05 | 浙江三花制冷集团有限公司 | A kind of rotating type change valve |
| CN210716110U (en) * | 2019-09-10 | 2020-06-09 | 大连海事大学 | Multi-station pneumatic reversing valve |
-
2019
- 2019-09-10 CN CN201910851469.9A patent/CN110440032B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100665350B1 (en) * | 2005-11-17 | 2007-01-04 | (주)티원엔지니어링 | Directional selecting valve |
| CN205841863U (en) * | 2016-06-07 | 2016-12-28 | 威海柏林圣康空氧科技有限公司 | Rotary gas circuit extracts conversion equipment |
| CN105971962A (en) * | 2016-07-15 | 2016-09-28 | 辽宁海裕流体传控系统有限公司 | Single valve core rotation type hydraulic valve driven by single motor |
| CN109424765A (en) * | 2017-08-28 | 2019-03-05 | 浙江三花制冷集团有限公司 | A kind of rotating type change valve |
| CN107883019A (en) * | 2017-12-11 | 2018-04-06 | 珠海格力电器股份有限公司 | Rotary four-way reversing valve and air conditioner |
| CN210716110U (en) * | 2019-09-10 | 2020-06-09 | 大连海事大学 | Multi-station pneumatic reversing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110440032A (en) | 2019-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110440032B (en) | Multi-station pneumatic reversing valve | |
| CN107605844B (en) | Rotary hydraulic cylinder | |
| CN104675760A (en) | Nozzle-adjustable steam ejector | |
| CN102744638B (en) | Hydraulic turret | |
| CN110594221B (en) | Valve core and valve sleeve matching pair and hydraulic/pneumatic force compensation method thereof | |
| CN105757030B (en) | A kind of autocontrol air operated reversing valve | |
| CN107559459B (en) | Electric servo valve | |
| CN201973324U (en) | Four-way valve for air conditioner | |
| CN210716110U (en) | Multi-station pneumatic reversing valve | |
| CN208595108U (en) | A kind of pilot operated compound relief valve structure | |
| CN208764023U (en) | A kind of hydraulic cylinder and hydraulic system | |
| CN207111584U (en) | Stroke-controllable automatic reciprocating hydraulic cylinder | |
| CN204153163U (en) | A kind of valve rod is without the straight stroke electric modulating valve moved axially | |
| CN210566632U (en) | Flow-regulating pressure-regulating valve | |
| CN204851819U (en) | Control valve and use circuit breaker hydraulic pressure operating mechanism of this control valve | |
| CN104742075B (en) | A kind of aerodynamic wind spanner air inlet adjustment structure | |
| CN216344211U (en) | Proportional valve for automatic precision control of high-pressure gas | |
| CN203823162U (en) | Pneumatic valve | |
| CN113606376B (en) | Soft pneumatic valve with paper folding structure and control method thereof | |
| CN106051173B (en) | High-pressure air operated valve | |
| CN209875971U (en) | Butterfly valve with adjustable inner bypass | |
| CN208364856U (en) | A kind of gas liquid two purpose high frequency rotary valve | |
| CN218062762U (en) | Petal air adjusting door for ventilator | |
| CN207777684U (en) | A kind of spool swinging electrohydraulic servo valve | |
| CN208587353U (en) | A kind of oscillating cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |