CN110878847A - Low output device is got to fluid valve - Google Patents
Low output device is got to fluid valve Download PDFInfo
- Publication number
- CN110878847A CN110878847A CN201911285354.4A CN201911285354A CN110878847A CN 110878847 A CN110878847 A CN 110878847A CN 201911285354 A CN201911285354 A CN 201911285354A CN 110878847 A CN110878847 A CN 110878847A
- Authority
- CN
- China
- Prior art keywords
- sliding
- sliding end
- fluid
- limiting
- piston
- 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.)
- Pending
Links
- 239000012530 fluid Substances 0.000 title claims abstract description 113
- 238000007789 sealing Methods 0.000 claims description 24
- 238000004073 vulcanization Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 10
- 206010065929 Cardiovascular insufficiency Diseases 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
- F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
- F16K11/048—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with valve seats positioned between movable valve members
-
- 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
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Housings (AREA)
Abstract
The invention relates to a low output device of a fluid valve, which comprises a valve body, at least two input ends and at least one output end which are formed on the valve body, and a piston part which is arranged in the valve body in a sliding way, wherein a limiting part which can limit the piston part is formed in the valve body, when at least one side of the piston part is stressed and the piston part slides to a first sliding end or a second sliding end and is limited by the limiting part, a fluid channel at one limiting end is in a closed state, a fluid channel at the other non-limiting end is in an open state, fluid flows to the output end through the fluid channel at the non-limiting end for output, when two ends of the piston part are stressed and have pressure difference, the equivalent stress of the pressure at the two ends is concentrated on the piston part, one side with larger fluid pressure pushes the piston part to the other side of the piston part, and when the piston at the side is limited by the limiting part, the valve at one limiting side, the valve at the other side is in an open state, so that low output is realized.
Description
Technical Field
The invention belongs to the technical field of fluid control output, and particularly relates to a low output device of a fluid valve.
Background
Controlling fluid output through a plurality of valves is a common technique in the prior art, and includes at least one output port and a plurality of output ports, and conventionally, by opening or closing the valves, fluid is selectively output from the respective output ports.
Furthermore, with the innovation of the technology, the prior art originally adopts an electronic mode to replace a manual control mode to control the on-off of the valve. The electronic control mode also brings the disadvantages of cost increase, equipment redundancy and the like, so that the electronic control mode is unnecessary for taking the output environment with relatively uniform or fixed output conditions.
For the output condition that the output conditions are uniformly fixed, the prior art realizes the automatic control output of the fluid through an automatic output taking structure. For example, in an output structure of a conventional fluid valve, fluid of different pressures enters a valve body from a plurality of input ends, the valve body selects one side with a larger hydraulic pressure or air pressure from a plurality of output ends as an input end, and closes the other end, thereby realizing selective output.
The high output can only be selected correspondingly to the side with larger pressure as the input side, and the prior art is lack of a structure for taking the low output to adapt to the fluid control requirement in consideration of throttling, flow limiting and the like.
In view of the above, the prior art should be improved to solve the technical problems.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a low output device of a fluid valve, which is characterized in that a piston part is arranged in a valve body in a sliding manner, and a limiting part is arranged in the valve body, so that when any one end of two ends of the piston part along the sliding direction of the piston part is pushed by compressed fluid and slides to be limited by the limiting part, the valve body at the limiting end is in a closed state, and the end which is not limited is in an open state, thereby realizing the low output of the fluid valve.
In order to solve the above technical problems, the present invention provides a low output device for a fluid valve, the device including a valve body, at least two input ends and at least one output end formed on the valve body, the device further including a piston part slidably disposed in the valve body, a limiting part capable of limiting the piston part is formed in the valve body, a gap is formed between an outer expansion of the piston part and an inner wall of the valve body and/or the limiting part, the gap extends toward the output end and forms a cavity, the cavity is defined as a fluid channel, two ends of the piston part along a sliding direction thereof are defined as a first sliding end and a second sliding end, wherein when the piston part slides to the first sliding end or the second sliding end is limited by the limiting part, the fluid channel at one limiting end is in a closed state, the fluid channel at the end which is not limited is in an open state, and the fluid flows to the output end through the fluid channel at the end which is not limited to be output
Preferably, the first sliding end and the second sliding end of the piston part are connected by a joint member, and the limiting part is a table-shaped flange formed at a position where the output end and the input end are communicated, wherein when the piston part slides to the first sliding end or the second sliding end and is limited by the limiting part, the bottom surface of the sliding end abuts against the surface of the limiting part, so that the fluid channel at the limiting end is in a closed state, and the fluid channel at the non-limiting end is in an open state.
Further preferably, a sealing element is fixedly arranged on the surface of the first sliding end and/or the second sliding end, wherein the sealing element is a vulcanization valve, and the sealing element is bonded with the surface of the first sliding end opposite to the second sliding end.
Still preferably, the connecting piece is a connecting rod, the first sliding end and the second sliding end respectively comprise a plug body and a connecting column for connecting the connecting piece, the surface of the connecting column is sunken to form a storage groove, and the storage groove is connected with the connecting piece in an inverted manner.
Further preferably, the plug body of the first sliding end and the second sliding end is further formed with a guide member extending toward the inner wall surface of the valve body, and the gap is formed between the guide member and the inner wall of the valve body.
Preferably, the piston portion is a long straight block-shaped sliding member with a first sliding end and a second sliding end which are integrally formed, the limiting portion is fixedly arranged on at least one side of the valve body along the sliding direction of the piston portion, the gap is formed between the piston portion and the limiting portion, the gap extends to the output end and forms a fluid channel, and a yielding structure is formed between the piston portion and the limiting portion.
Further preferably, the structure of stepping down includes that the piece of stepping down and the mouth of stepping down, wherein, the incision shape of the mouth of stepping down with the shape that expands outward of the piece of stepping down is unanimous, the piston portion slides to making the piece of stepping down offsets with the mouth of stepping down, so that the piston portion by spacing portion is spacing.
Still further preferably, on the piston portion, at least one of the two sides of the end surfaces of the first sliding end and the second sliding end is formed with a groove, the position-giving member is a fixed block fixedly arranged in the groove, the position-giving opening corresponds to the groove and is located at a position close to one end edge of the groove on the limiting portion, or the groove is formed at a position close to the two side edges of the first sliding end and the second sliding end on the limiting portion, the position-giving opening corresponds to the groove and is located at least one of the two sides of the end surfaces of the first sliding end and the second sliding end.
Preferably, the piston portion has a first sliding end and a second sliding end, the first sliding end and the second sliding end are respectively provided with a groove integrally wound with the sliding end, the relief opening is formed on the limiting portion near two edges of the groove, or the grooves are formed on the limiting portion near two edges of the first sliding end and the second sliding end, and the relief opening is formed on two sides of the end surfaces of the first sliding end and the second sliding end.
Further preferably, the position-giving piece is a fixing ring fixedly arranged in the groove, the cross section of the fixing ring is circular, and the notch of the position-giving opening is an arc surface matched with the cross section of the position-giving piece in shape.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages:
1. a piston portion is slidably disposed within the valve body such that when pressurized fluid enters the valve body from the inlet port, the fluid pushes the piston portion to slide within the valve body. The piston part and the valve body are limited by the limiting part, so that when any end of the piston part along the sliding direction of the piston part is pushed by compressed fluid and slides to be limited by the limiting part, the valve body at the limiting end is in a closed state, and the valve body at the non-limiting end is in an open state, namely when pressure difference exists between two ends of the piston part under stress, equivalent stress of pressure at the two ends is concentrated on the piston part, one side with higher fluid pressure pushes the piston part to the other side of the piston part, and until the piston at the side is limited by the limiting part, the valve at the limiting side is in a closed state, and the valve at the other side is in an open state, so that low output is achieved;
2. the limiting part can be a table-shaped flange arranged in the valve body, and can also be a yielding structure between the limiting part and the piston part, the limiting between the piston part and the valve body is realized by the way that the piston part slides to be abutted against the corresponding structure of the limiting part, and different limiting modes can ensure that the output device is suitable for meeting the output requirements of different fluids;
3. the sealing piece is fixedly arranged on the surface of the first sliding end and/or the surface of the second sliding end of the piston part, the sealing piece can adopt the sealing piece of a vulcanization valve and is bonded with the first sliding end or the second sliding end, and the bonding direction of the sealing piece is consistent with the pressing direction during working condition sealing, so that the valve at the sealing piece cannot generate fatigue decay of bonding degree along with time, the valve cannot fall off after degumming, and the sealing effect of the device is ensured;
4. the guide pieces are formed on the first sliding end and the second sliding end, on one hand, the stress area of the piston part is increased, on the other hand, the stress point and the supporting point of the piston part are in oblique angle association, and on the premise of ensuring the performance, the material cost of the device is reduced;
5. when the limiting part is arranged into a yielding structure formed by the yielding piece and the yielding port, the yielding piece is arranged into a circular ring shape and wound and fixed, so that the cost of configuring a vulcanizing mold when a vulcanizing valve is adopted for the cylindrical yielding piece is saved, and the notch shape of the yielding port is arranged into a cambered surface matched with the section of the yielding piece, thereby solving the technical problem that sharp corners cannot be removed by metal drilling;
6. the first input end and the second input end are connected in an inverted buckle mode through the connecting piece, therefore when the piston is assembled, the connection stability is guaranteed within the range of material yield strength of the connecting piece and the connecting column by means of stress generated by interference magnitude after control, and the inverted buckle connection can simultaneously guarantee that the annular area pressure of the piston portion, which is subjected to compressed fluid, is smaller than the pull-out force between the connecting piece and the connecting column.
Drawings
Fig. 1 is a sectional view showing a sectional structure of a fluid valve according to a first embodiment of the present invention, in which a low output device is provided;
FIG. 2 is a schematic diagram illustrating the configuration of the internal cavity of the valve body in the low output device of the fluid valve shown in FIG. 1;
FIG. 3 is a schematic diagram illustrating the configuration of a piston portion in the low output device of the fluid valve of FIG. 1;
FIG. 4 is a state diagram illustrating a state in which a piston portion of the low output device of the fluid valve shown in FIG. 1 is disposed in a valve body;
FIG. 5 is a state diagram illustrating the flow of fluid when the fluid valve low output device of the first embodiment of the present invention is in a low output state;
fig. 6 is a sectional view showing a sectional structure of a fluid valve according to a second embodiment of the present invention with a low output device;
FIG. 7 is a schematic diagram illustrating the configuration of the internal cavity of the valve body in the low output device of the fluid valve shown in FIG. 6;
FIG. 8 is a schematic view showing the configuration of a piston portion in the low output device of the fluid valve shown in FIG. 6;
FIG. 9 is an enlarged partial schematic view showing the construction of the part A relief port in the low output device of the fluid valve of FIG. 6;
FIG. 10 is a state diagram showing a state in which the fluid valve low output device according to the second embodiment of the present invention takes a low output state of the fluid flow;
fig. 11 is a partially enlarged schematic view illustrating a yield structure in the low output state shown in fig. 10.
Detailed Description
An embodiment of a low output device for a fluid valve according to the present invention will be described with reference to the accompanying drawings. Those of ordinary skill in the art will recognize that the described embodiments can be modified in various different ways, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Furthermore, in the present description, the drawings are not to scale and like reference numerals refer to like parts.
It should be noted that, in the embodiments of the present invention, the expressions "first" and "second" are used to distinguish two entities with the same name but different names or different parameters, and it is understood that "first" and "second" are merely for convenience of description and should not be construed as limitations of the embodiments of the present invention, and the descriptions thereof in the following embodiments are omitted.
The low output device of the fluid valve comprises at least two output ends and at least one output end, namely, the fluid valve of the invention can be suitable for a common three-way valve body structure, and also can be suitable for a valve body structure which is input by two or more input ends and outputs from a plurality of output ends, and the embodiment of the invention is not limited by the number of the input ends or the output ends. The fluids described in the embodiments of the present invention should be understood as a variety of fluids including gas streams and liquid streams, and will not be described in the embodiments of the present invention.
The piston part is fixed in the valve body and can slide in a channel formed in the inner cavity of the valve body. Ideally, for fluid communication, a uniform gap should be formed between the outer expansion of the piston portion and the inner wall of the valve body, and the gap extends to the output end, and the cavity formed by the gap may be defined as a channel for fluid communication, i.e. a fluid channel. In other cases, the clearance may be formed between a part of the piston portion and the inner wall of the valve body. The piston part is limited by the limiting part, the limiting part is a part which is formed on the surface of the inner cavity of the valve body and used for limiting the piston part, the sliding of the piston part in the inner cavity of the valve body is limited by the limiting part, when the sliding of the piston part is limited by the limiting part, the whole or partial surface of the piston part can be abutted against the whole or partial surface of the limiting part, and the limiting part can also be mutually limited in other forms.
The sliding direction of the piston portion is defined as a first direction and a second direction, for example, if the piston portion slides laterally or longitudinally in the valve body, two directions of the lateral or longitudinal sliding should correspond to the input ends of the valve body, respectively, and portions of the piston portion corresponding to the two directions may be defined as a first sliding end and a second sliding end, respectively. Of course, when the valve body includes a plurality of input ends, the piston portion may be configured to include a plurality of sliding ends and correspond to a plurality of sliding directions. When fluid is input at one end of the piston part or when fluid input at two ends of the piston part has pressure difference, the piston part slides to a certain direction under the pushing of equivalent stress until a certain output end of the piston part is limited by a limiting part in the valve body, at the moment, the valve body (or the fluid channel) corresponding to the input end at the limiting end is in a closed state, the valve body (or the fluid channel) at the non-limiting end is in an open state, and the fluid is output from the valve body (or the fluid channel) at the open side. In addition, if the pressure difference between the two ends of the piston portion for inputting the fluid changes periodically or aperiodically, the sliding of the piston portion should also be consistent with the change of the equivalent stress caused by the change.
Example one
Fig. 1 is a sectional view showing a sectional structure of a fluid valve according to a first embodiment of the present invention, in which a low output device is provided. As shown in fig. 1, the fluid valve low output device according to the first embodiment of the present invention includes a valve body 10a and a piston portion 20a disposed in the valve body, and the piston portion 20a is slidably disposed in an inner cavity of the valve body 10 a.
Fig. 2 is a schematic view illustrating a structure of an inner cavity of a valve body in the low output device of the fluid valve shown in fig. 1. Fig. 3 is a schematic view illustrating a structure of a piston portion in the fluid valve low output device shown in fig. 1. Referring first to fig. 2, the valve body 10a is a three-way valve including input ports at both sides thereof and an output port at a central position thereof. The two input ends are respectively defined as a first input end 11a and a second input end 12a, a three-way input and output structure is formed by the first input end 11a, the second input end 12a and the output end 13a, connecting holes 14a are formed at the positions where the first input end 11a and the second input end 12a are communicated with the output end 13a, and the piston part 20a respectively passes through the two connecting holes 14a to realize connection with the valve body 10 a. Referring again to fig. 3, in this embodiment of the present invention, the piston portion 20a has an "i" shape, which includes a first sliding end 21a and a second sliding end 22a corresponding to the first input end 11a and the second input end 12a, and an engaging piece 23a connecting the first sliding end 21a and the second sliding end 22 a. Each sliding end includes a plug body 24a far away from the connecting hole 14a, and a connecting post 25a connected to the bottom of the plug body and close to the connecting hole 14a, the connecting post 25a is recessed to form a receiving groove 26a, and both ends of the connecting piece 23a are respectively connected to the receiving grooves 26a of the two sliding ends, thereby connecting and fixing the first input end 11a and the second input end 12 a. It should be noted that, in this embodiment of the present invention, the connecting piece 23a is a connecting rod, and the connecting and fixing between the connecting piece 23a and the receiving groove 26a is realized by inserting the connecting rod into the receiving groove 26a and forming an inverted connection with the receiving groove 26a, so that when the connecting rod is assembled, the connecting piece 23a is inserted into the receiving groove 26a within the range of material yield strength of the connecting piece 23a and the connecting post 25a by using the stress generated by the interference magnitude after control, so as to ensure the connection stability, and at the same time, the annular area pressure of the compressed fluid on the piston portion 20a is smaller than the pull-out force between the connecting piece 23a and the connecting post 25 a.
Fig. 4 is a state diagram showing a state in which a piston portion of the fluid valve low output device shown in fig. 1 is disposed in a valve body. Referring to fig. 2 and 4, in this embodiment, the stopper portion 15a is a mesa-shaped flange formed on the inner wall of the valve body 10a at the position of the connection hole 14a, and the hole diameter of the connection hole 14a is smaller than the bore diameter of the plug body 24 a. When the piston portion 20a is disposed in the valve body 10a, a gap is formed between the outward expansion of the plug body 24a and the inner wall of the valve body 10a and the stopper portion 15a, the gap extends toward the connection hole 14a, and a cavity is formed between the piston portion 20a and the valve body 10a, which is defined as a fluid passage 30 a. Fig. 5 is a state diagram showing a flow state of a fluid in a low output state of the fluid valve low output device according to the first embodiment of the present invention, and a direction of a straight arrow in the diagram shows a flow direction of the fluid in the valve body. As shown in fig. 5, when the piston portion 20a slides toward the second input end 12a side of the valve body 10a, the bottom surface of the plug 24a abuts against the surface of the mesa-shaped flange at the position of the connection hole 14a, and the piston portion 20a is stopped by the stopper portion 15 a. At this time, the fluid passage of the first input end 11a (i.e., the position-limiting end) is closed, the fluid cannot be output, the fluid passage of the second input end 12a (i.e., the position-non-limiting end) is opened, and the fluid input from the second input end 12a enters the valve body cavity of the output end 13a through the connecting hole 14a and is output.
Referring to fig. 3 to 5 again, in order to ensure the sealing effect of the position limiting, a sealing element 27a, such as a vulcanizing valve, may be further fixed on a side surface of the first sliding end 21a and/or the second sliding end 22a facing the connection hole 14a, the sealing element 27a and the sliding end surface may be fixed by adhesion or the like, and the adhesion direction of the sealing element 27a is consistent with the pressing direction during the working condition sealing, so that the valve at the sealing element 27a does not fatigue and decay with time, which causes the valve to fall off after degumming.
The plug body 24a of the first sliding end 21a and the second sliding end 22a may further have a guide 28a fixed thereto, the guide 28a extends toward the inner wall surface of the valve body 10a, and referring to fig. 3, 4 and 5, the guide 28a may be located on the front end surface of the plug body 24a facing the input port, and then, at this time, a gap forming the fluid passage 30a should be formed between the guide 28a and the inner wall of the valve body 10a and the inner wall of the stopper 15 a; in other embodiments, the position of the guiding element 28a may be fixed on the side of the plug body 24a facing the inner wall of the valve body 10 a. The guide 28a is provided to make the sliding of the piston portion 20a smoother while extending the outward expansion of the piston portion 20a further on the one hand; on the other hand, the guide 28a is arranged to keep the force point of the piston portion 20a in oblique angle relation with the supporting point, thereby reducing the material cost of the device on the premise of ensuring the performance.
Example two
The second embodiment of the present invention is to describe another limiting form between the limiting portion and the piston portion in the second embodiment of the present invention.
Fig. 6 is a sectional view showing a sectional structure of a fluid valve according to a second embodiment of the present invention, which is a low output device. As shown in fig. 6, in this embodiment of the present invention, the valve body 10b also includes a three-way valve structure composed of two side input ports and a middle input port. The two input terminals are defined as a first input terminal 11b and a second input terminal 12 b. One side of the piston portion 20b is defined as a first sliding end 21b and the other side is defined as a second sliding end 22b in accordance with the sliding direction of the piston portion 20b within the valve body 10 b.
Fig. 7 is a schematic view illustrating a configuration of an inner cavity of a valve body in the low output device of the fluid valve shown in fig. 6. Fig. 8 is a schematic view showing a structure of a piston portion in the fluid valve low output device shown in fig. 6. Referring to fig. 6 and 7, in the second embodiment, the position-limiting portion 14b is attached to the inner wall of the valve body 10b and extends along the sliding direction of the piston portion 20b, and the position-limiting portion 14b may be disposed on at least one side of the sliding direction of the piston portion 20b, in this embodiment, the position-limiting portions 14b are respectively fixedly disposed on the inner walls of the valve body 10b along both sides of the sliding direction of the piston portion 20 b. A gap constituting the fluid passage 15b is formed between the piston portion 20b and the stopper portion 14 b. Fig. 9 is a partially enlarged schematic view illustrating a structure of a part a of the relief port in the low output device of the fluid valve shown in fig. 6, and referring to fig. 6, 8 and 9, in a second embodiment, the limiting structure is implemented by a relief structure including a relief piece 23b and a relief port 16b, and when the piston portion 20b slides to make the relief piece 23b and the relief port 16b in the limiting portion 14b abut against each other, the piston portion 20b and the limiting portion 14b are limited.
Referring again to fig. 6 and 8, in the second embodiment, the piston portion 20b is an integrally molded block-shaped sliding member. The piston portion 20b is formed with a groove (not shown) integrally formed around the sliding end on both sides of the end surface of the first sliding end 21b or the second sliding end 22b, and the above-mentioned abdicating member 23b is a fixing ring fixedly disposed in the groove and around the side surface of the sliding end, in this embodiment, the cross section of the fixing ring is circular, and correspondingly, the abdicating opening 16b is formed on the limiting portion 14b near both edges of the groove on the first sliding end 21b and the second sliding end 22 b. To match the relief piece 23b, the notch of the relief opening 16b should be configured to match the cross-sectional shape of the relief piece 23b, and then the relief opening 16b in this embodiment should be a curved surface configured to match the retaining ring. Thus, referring to fig. 11, when the piston portion 20b slides to be limited by the limiting portion 14b, the surface of the relief piece 23b abuts against the cut surface of the relief port 16b, thereby achieving the limitation of the piston portion 20b and the limiting portion 14 b.
Of course, in other embodiments of the present invention, a groove may be formed on the limiting portion 14b, and the position-giving piece 23b is fixed in the groove on the limiting portion, and correspondingly, the position-giving openings 16b are formed at two side edges of the end surfaces of the first sliding end 21b and the second sliding end 22 b. In addition, based on the second embodiment of the present invention, a groove is respectively formed on one or both sides of the two end surfaces of the first sliding end 21b and the second sliding end 22b, the position-giving piece 23b is a fixed block fixedly disposed in the groove, and the position-giving opening 16b is correspondingly formed on the position-giving part 14b at an edge of one end close to the groove; further alternatively, the recess is formed at the two edges of the first sliding end 21b and the second sliding end 22b on the limiting portion 14b, and the relief opening 16b corresponds to the recess and is located at one side or two sides of the two end surfaces of the first sliding end 21b and the second sliding end 22 b. At this time, the notch shape of the relief opening 16b may be kept to be identical to the outward-expanded shape of the fixing block.
Fig. 10 is a state diagram showing a flow state of a fluid in a low output state of the fluid valve low output device according to the second embodiment of the present invention, fig. 11 is a partially enlarged schematic view showing a yielding structure in the low output state shown in fig. 10, and a direction of a linear arrow in fig. 10 shows a flow direction of the fluid in the valve body. As shown in fig. 10, when the piston portion 20b slides toward the second input end 12b of the valve body 10b, the relief piece 23a on the first input end 21b side abuts against the relief port 16b on the first input end 21b side of the stopper portion 14b, and the piston portion 20b is stopped by the stopper portion 14 b. At this time, the fluid passage 15b of the first input end 11b (i.e., the position-limiting end) is closed, the fluid cannot be output, the fluid passage 15b of the second input end 12b (i.e., the position-non-limiting end) is opened, and the fluid input from the second input end 12b enters the valve body cavity of the output end 13b through the fluid passage 15b and is output.
Compared with the prior art, the invention has the following beneficial technical effects due to the adoption of the technical scheme:
1. a piston portion is slidably disposed within the valve body such that when pressurized fluid enters the valve body from the inlet port, the fluid pushes the piston portion to slide within the valve body. The piston part and the valve body are limited by the limiting part, so that when any end of the piston part along the sliding direction of the piston part is pushed by compressed fluid and slides to be limited by the limiting part, the valve body at the limiting end is in a closed state, and the valve body at the non-limiting end is in an open state, namely when pressure difference exists between two ends of the piston part under stress, equivalent stress of pressure at the two ends is concentrated on the piston part, one side with higher fluid pressure pushes the piston part to the other side of the piston part, and until the piston at the side is limited by the limiting part, the valve at the limiting side is in a closed state, and the valve at the other side is in an open state, so that low output is achieved;
2. the limiting part can be a table-shaped flange arranged in the valve body, and can also be a yielding structure between the limiting part and the piston part, the limiting between the piston part and the valve body is realized by the way that the piston part slides to be abutted against the corresponding structure of the limiting part, and different limiting modes can ensure that the output device is suitable for meeting the output requirements of different fluids;
3. the sealing piece is fixedly arranged on the surface of the first sliding end and/or the surface of the second sliding end of the piston part, the sealing piece can adopt the sealing piece of a vulcanization valve and is bonded with the first sliding end or the second sliding end, and the bonding direction of the sealing piece is consistent with the pressing direction during working condition sealing, so that the valve at the sealing piece cannot generate fatigue decay of bonding degree along with time, the valve cannot fall off after degumming, and the sealing effect of the device is ensured;
4. the guide pieces are formed on the first sliding end and the second sliding end, on one hand, the stress area of the piston part is increased, on the other hand, the stress point and the supporting point of the piston part are in oblique angle association, and on the premise of ensuring the performance, the material cost of the device is reduced;
5. when the limiting part is arranged into a yielding structure formed by the yielding piece and the yielding port, the yielding piece is arranged into a circular ring shape and wound and fixed, so that the cost of configuring a vulcanizing mold when a vulcanizing valve is adopted for the cylindrical yielding piece is saved, and the notch shape of the yielding port is arranged into a cambered surface matched with the section of the yielding piece, thereby solving the technical problem that sharp corners cannot be removed by metal drilling;
6. the first input end and the second input end are connected in an inverted buckle mode through the connecting piece, therefore when the piston is assembled, the connection stability is guaranteed within the range of material yield strength of the connecting piece and the connecting column by means of stress generated by interference magnitude after control, and the inverted buckle connection can simultaneously guarantee that the annular area pressure of the piston portion, which is subjected to compressed fluid, is smaller than the pull-out force between the connecting piece and the connecting column.
The present invention has been described in detail, and the embodiments are only used for understanding the method and the core idea of the present invention, and the purpose of the present invention is to enable those skilled in the art to understand the content of the present invention and to implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A fluid valve low output device comprises a valve body, at least two input ends and at least one output end which are formed on the valve body, and is characterized by further comprising a piston part which is arranged in the valve body in a sliding manner, wherein a limiting part which can limit the piston part is formed in the valve body, a gap is formed between the outer expansion of the piston part and the inner wall of the valve body and/or the limiting part, the gap extends towards the output end and forms a cavity which is defined as a fluid channel, and two ends of the piston part along the sliding direction are defined as a first sliding end and a second sliding end, wherein,
when at least one side of the piston part is stressed and the piston part slides to the first sliding end or the second sliding end and is limited by the limiting part, the fluid channel at one limiting end is in a closed state, the fluid channel at the other non-limiting end is in an open state, and the fluid flows to the output end through the fluid channel at the other non-limiting end to be output.
2. The fluid valve low output device according to claim 1, wherein the first and second sliding ends of the piston portion are connected by a coupling member, and the stopper portion is a table-shaped flange formed at a position where the output end and the input end communicate with each other,
when the piston part slides to the first sliding end or the second sliding end and is limited by the limiting part, the bottom surface of the sliding end is abutted against the surface of the limiting part, so that the fluid channel at one limiting end is in a closed state, and the fluid channel at the other non-limiting end is in an open state.
3. The fluid valve low output device of claim 2, wherein a seal is secured to a surface of the first sliding end and/or the second sliding end, wherein,
the sealing element is a vulcanization valve and is bonded to one side surface of the first sliding end, which is opposite to the second sliding end.
4. The fluid valve low output device of claim 2, wherein the joint member is a connecting rod, the first sliding end and the second sliding end each comprise a plug body and a connecting post for connecting the joint member, and the connecting post is recessed to form a receiving groove, and the receiving groove is connected with the joint member in an inverted manner.
5. The fluid valve low output device of claim 4, wherein the plug bodies of the first and second sliding ends further have guides formed thereon, the guides extending toward the inner wall surface of the valve body, and the gap is formed between the guides and the inner wall of the valve body.
6. The fluid valve low output device according to claim 1, wherein the piston portion is an elongated straight block-shaped sliding member having a first sliding end and a second sliding end integrally formed, the stopper portion is fixedly provided along at least one side of the sliding direction of the piston portion in the valve body, the gap is formed between the piston portion and the stopper portion, the gap extends to the output end and forms a fluid passage, wherein,
the piston part and the limiting part form a yielding structure.
7. The fluid valve low output device of claim 6, wherein the relief structure comprises a relief member and a relief port, wherein,
let the incision shape of position mouth with let the position piece expand the shape unanimously outward, piston portion slides to making let the position piece with let the position mouth offset, so that piston portion quilt spacing portion is spacing.
8. The fluid valve low output device according to claim 7, wherein the piston portion has a groove formed on at least one of two sides of end surfaces of the first sliding end and the second sliding end, the position-giving member is a fixed block fixedly disposed in the groove, the position-giving opening corresponds to the groove and is located at an end edge of the position-giving portion near the groove, or,
the groove is formed in the position, close to the two edges of the first sliding end and the second sliding end, of the limiting portion, and the position yielding port corresponds to the groove and is located on at least one of the two sides of the end faces of the first sliding end and the second sliding end.
9. The fluid low output device according to claim 7, wherein the piston portion has a first sliding end and a second sliding end, the first sliding end and the second sliding end each having a groove integrally formed thereon, the relief port being formed on the position limiting portion near the edges of the two ends of the groove, or,
the groove is formed on the limiting part and close to two edges of the first sliding end and the second sliding end, and the position yielding openings are formed on two sides of the end surfaces of the first sliding end and the second sliding end.
10. The fluid valve low output device according to claim 9, wherein the relief member is a fixing ring fixed in the groove, the fixing ring has a circular cross section, and the notch of the relief opening has an arc shape matching the cross section of the relief member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911285354.4A CN110878847A (en) | 2019-12-13 | 2019-12-13 | Low output device is got to fluid valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911285354.4A CN110878847A (en) | 2019-12-13 | 2019-12-13 | Low output device is got to fluid valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110878847A true CN110878847A (en) | 2020-03-13 |
Family
ID=69731702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911285354.4A Pending CN110878847A (en) | 2019-12-13 | 2019-12-13 | Low output device is got to fluid valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110878847A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1035331A2 (en) * | 1999-03-06 | 2000-09-13 | Robert Bosch Gmbh | Pilot-operated multiway valve |
| JP2003172465A (en) * | 2001-12-05 | 2003-06-20 | Sekisui House Ltd | Two-way check valve |
| CN201083284Y (en) * | 2007-08-21 | 2008-07-09 | 张熔 | Alternative decompression valve |
| US20100032036A1 (en) * | 2007-06-30 | 2010-02-11 | Festo Ag & Co. Kg | Valve with an and-function |
| CN108397570A (en) * | 2018-03-06 | 2018-08-14 | 中车青岛四方车辆研究所有限公司 | Piston type pneumatic control valve |
| CN109843369A (en) * | 2016-10-17 | 2019-06-04 | 拜耳医药保健有限公司 | Control valve for fluids and manifold |
| CN209587216U (en) * | 2019-01-01 | 2019-11-05 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | A kind of fluid is selected to device |
| CN211449745U (en) * | 2019-12-13 | 2020-09-08 | 瑞立集团瑞安汽车零部件有限公司 | Low output device is got to fluid valve |
-
2019
- 2019-12-13 CN CN201911285354.4A patent/CN110878847A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1035331A2 (en) * | 1999-03-06 | 2000-09-13 | Robert Bosch Gmbh | Pilot-operated multiway valve |
| JP2003172465A (en) * | 2001-12-05 | 2003-06-20 | Sekisui House Ltd | Two-way check valve |
| US20100032036A1 (en) * | 2007-06-30 | 2010-02-11 | Festo Ag & Co. Kg | Valve with an and-function |
| CN201083284Y (en) * | 2007-08-21 | 2008-07-09 | 张熔 | Alternative decompression valve |
| CN109843369A (en) * | 2016-10-17 | 2019-06-04 | 拜耳医药保健有限公司 | Control valve for fluids and manifold |
| CN108397570A (en) * | 2018-03-06 | 2018-08-14 | 中车青岛四方车辆研究所有限公司 | Piston type pneumatic control valve |
| CN209587216U (en) * | 2019-01-01 | 2019-11-05 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | A kind of fluid is selected to device |
| CN211449745U (en) * | 2019-12-13 | 2020-09-08 | 瑞立集团瑞安汽车零部件有限公司 | Low output device is got to fluid valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI695947B (en) | Spool valve | |
| US10760707B2 (en) | Fluid valve | |
| JP4783917B2 (en) | 4.5 port switching valve | |
| DK1350008T3 (en) | Sleeve valve for controlling fluid flow between a hydrocarbon reservoir and a tube in a well, and a method for assembling the sleeve valve | |
| WO2008144044A3 (en) | Electronically controlled valve and systems containing same | |
| KR102191059B1 (en) | High pressure valve | |
| CN211449745U (en) | Low output device is got to fluid valve | |
| CA2590017A1 (en) | Fluid control valve device | |
| CN102401160A (en) | Conical-core pressure-difference check valve | |
| CN216158302U (en) | Frost valve | |
| WO2005065235A3 (en) | A juncture for a high pressure fuel system | |
| EP3094896B1 (en) | Valve assembly | |
| CN104344010A (en) | Electromagnetic flow reversing valve | |
| WO2005079543A3 (en) | Pin valve assembly | |
| CN110878847A (en) | Low output device is got to fluid valve | |
| KR960023957A (en) | Poppet Type Directional Valve | |
| KR102403862B1 (en) | manifold | |
| CN202769012U (en) | Guide type two-position two-way electromagnetic stop valve | |
| CN101349356A (en) | One-way elastic valve and fluid delivery device used thereby | |
| CN203442207U (en) | Electromagnetic flow reversing valve | |
| CN211501693U (en) | Stop valve | |
| US10508752B2 (en) | Valve actuator indicator arrangement | |
| EP2085670B1 (en) | By-pass valve | |
| CN101368641A (en) | Unloading type liquid-control hydraulic break valve and its opening method | |
| KR102406048B1 (en) | High-pressure valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |