CN202927134U - Three-way valve - Google Patents
Three-way valve Download PDFInfo
- Publication number
- CN202927134U CN202927134U CN 201220622377 CN201220622377U CN202927134U CN 202927134 U CN202927134 U CN 202927134U CN 201220622377 CN201220622377 CN 201220622377 CN 201220622377 U CN201220622377 U CN 201220622377U CN 202927134 U CN202927134 U CN 202927134U
- Authority
- CN
- China
- Prior art keywords
- valve body
- piston
- cavity
- middle cavity
- end cap
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Details Of Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The utility model discloses a three-way valve which comprises a valve body and a piston component arranged in the valve body. The interior of the valve body is divided into an upper cavity, a middle cavity and a lower cavity which are communicated with one another; the piston component comprises an upper piston and a lower piston which are respectively arranged in the upper cavity and the lower cavity; the piston component is controlled through a driving mechanism to move up and down in the valve body. The three-way valve has the advantages that the piston component is controlled through a driving cylinder to move up and down in the valve body, communication state corresponding to all openings is controlled through the upper and lower pistons, when the upper piston plugs the upper end of the middle cavity, a vacuum pump is communicated with a vacuum chamber, vacuum pumping action is realized, and when the lower piston plugs the lower end of the middle cavity, the vacuum chamber is communicated with the atmosphere, and vacuum breaking action is realized. The three-way valve has a simple structure, is stable and reliable to operate, adopts the two pistons to control the on/off of all pipelines, and has good sealing effect and a long service life.
Description
Technical field
The utility model relates to the technical field of control valve, particularly relates to a kind of be used to vacuumizing and the three-way valve of vacuum breaker.
Background technique
At present, vacuumize with vacuum breaker and usually adopt tee ball valve to carry out, its major defect is that execution speed is slow, and final controlling element is failure to actuate sometimes, causes machine work undesired.
The model utility content
Goal of the invention of the present utility model is, for the problem of above-mentioned existence, provides a kind of simple in structure, three-way valve that execution speed is fast and stable.
the technical solution of the utility model is achieved in that a kind of three-way valve, comprise valve body and be arranged on the interior piston assembly of valve body, it is characterized in that: two ends, described valve body up and down are respectively arranged with upper end cap and lower end cap, described valve inner is divided into the upper cavity that is interconnected, middle cavity and lower chamber, be respectively arranged with and upper cavity on described valve body, the corresponding opening A that is communicated with of middle cavity and lower chamber, opening B and open C, described piston assembly comprises upper piston and the lower piston that is separately positioned in upper cavity and lower chamber, described upper piston and lower piston interconnect by the connecting rod that is arranged in middle cavity, the valve interior wall upper and lower end that described middle cavity is corresponding is boss structure, described upper piston lower end surface can be corresponding with middle cavity valve interior wall upper end projection section fit tightly, so that upper cavity and middle cavity are isolated mutually, described lower piston upper-end surface can be corresponding with middle cavity valve interior wall lower end projection section fit tightly, so that lower chamber and middle cavity are isolated mutually, described piston assembly is by its moving up and down in valve body of driving mechanisms control.
Three-way valve described in the utility model, it is fixedly installed respectively sliding axle and downslide moving axis at two ends, described connecting rod up and down, described upper piston fixes on the top of connecting rod by upper sliding axle and the upper limit packing ring that is arranged on connecting rod, and described lower piston is by the downslide moving axis and be arranged on lower limit packing ring on connecting rod and fix bottom at connecting rod.
Three-way valve described in the utility model, its sliding axle and the junction of upper piston and junction of downslide moving axis and lower piston on described are respectively arranged with the O RunddichtringO.
Three-way valve described in the utility model, its described driving mechanism comprises the driving cylinder that is arranged on fitting seat, described fitting seat is connected with screw mandrel on being fixed on upper end cap, the upper end of described upper sliding axle passes upper end cap, and the piston rod of described driving cylinder is connected with upper sliding axle by the connecting head that is arranged on upper sliding axle upper end.
Three-way valve described in the utility model, extend to form the guide-localization section in the middle part of its described upper end cap in valve body, be provided with the guide-localization cover between the guide-localization section of sliding axle and upper end cap on described, described guide-localization cover fixes by the limited ring that is arranged on upper end cap.
Three-way valve described in the utility model, the opening A that arranges on valve body corresponding to its described upper cavity is communicated with atmosphere, the opening B that arranges on valve body corresponding to described middle cavity is communicated with the vacuum chamber joint, and the open C that arranges on valve body corresponding to described lower chamber is communicated with vacuum pump adapter.
Three-way valve described in the utility model, it is respectively arranged with the O RunddichtringO in the junction that described vacuum chamber joint, vacuum pump adapter and lower end cap are connected with valve body.
The utility model is by driving cylinder control piston assembly moving up and down in valve body, utilize upper and lower piston to control connected state corresponding between each opening, when upper piston is blocked middle cavity upper end, make being communicated with of vacuum pump and vacuum chamber, realization vacuumizes action, when lower piston is blocked middle cavity lower end, vacuum chamber is communicated with atmosphere, realize the vacuum breaker action.The utility model is simple in structure, stable and reliable operation, and adopts two pistons to control break-make to pipeline separately, and sealing effect is better, longer service life.
Description of drawings
Fig. 1 is plan view of the present utility model.
Fig. 2 is side view of the present utility model.
Fig. 3 is A-A sectional view in Fig. 1.
Mark in figure: 1 is valve body, and 2a is upper end cap, and 2b is lower end cap, and 3a is upper cavity, 3b is middle cavity, and 3c is lower chamber, and 4a is opening A, and 4b is opening B, 4c is open C, and 5a is upper piston, and 5b is lower piston, and 6 is connecting rod, 7a is upper sliding axle, and 7b is the downslide moving axis, and 8a is the upper limit packing ring, and 8b is the lower limit packing ring, 9 is fitting seat, and 10 for driving cylinder, and 11 is screw mandrel, and 12 is connecting head, 13 is the guide-localization cover, and 14 is limited ring, and 15 is the vacuum chamber joint, and 16 are vacuum pump adapter.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
as Fig. 1, shown in 2 and 3, a kind of three-way valve, comprise valve body 1 and be arranged on the interior piston assembly of valve body 1, described valve body is respectively arranged with upper end cap 2a and lower end cap 2b in two ends Shang Xia 1, described valve body 1 inside is divided into the upper cavity 3a that is interconnected, middle cavity 3b and lower chamber 3c, be respectively arranged with and upper cavity 3a on described valve body 1, the corresponding opening A4a that is communicated with of middle cavity 3b and lower chamber 3c, opening B4b and open C 4c, the opening A4a that arranges on valve body 1 corresponding to described upper cavity 3a is communicated with atmosphere, the opening B4b that arranges on valve body 1 corresponding to described middle cavity 3b is communicated with vacuum chamber joint 15, the open C 4c that arranges on valve body 1 corresponding to described lower chamber 3c is communicated with vacuum pump adapter 16, at described vacuum chamber joint 15, the junction that vacuum pump adapter 16 and lower end cap 2b are connected with valve body 1 is respectively arranged with the O RunddichtringO.
described piston assembly comprises upper piston 5a and the lower piston 5b that is separately positioned in upper cavity 3a and lower chamber 3c, described upper piston 5a and lower piston 5b interconnect by the connecting rod 6 that is arranged in middle cavity 3b, at described connecting rod sliding axle 7a and downslide moving axis 7b on Shang Xia 6, two ends are fixedly installed respectively, described upper piston 5a is by upper sliding axle 7a and be arranged on upper limit packing ring 8a on connecting rod 6 and fix top at connecting rod 6, described lower piston 5b is by downslide moving axis 7b and be arranged on lower limit packing ring 8b on connecting rod 6 and fix bottom at connecting rod 6, sliding axle 7a and the junction of upper piston 5a and the junction of downslide moving axis 7b and lower piston 5b are respectively arranged with the O RunddichtringO on described.
Wherein, the valve body 1 inwall upper and lower end that described middle cavity 3b is corresponding is boss structure, described upper piston 5a lower end surface can be corresponding with middle cavity 3b valve body 1 inwall upper end projection section fit tightly, so that upper cavity 3a and middle cavity 3b isolate mutually, described lower piston 5b upper-end surface can be corresponding with middle cavity 3b valve body 1 inwall lower end projection section fit tightly, so that lower chamber 3c and middle cavity 3b isolate mutually, described piston assembly is by its moving up and down in valve body 1 of driving mechanisms control.
described driving mechanism comprises the driving cylinder 10 that is arranged on fitting seat 9, described fitting seat 9 is connected with screw mandrel 11 on being fixed on upper end cap 2a, the upper end of described upper sliding axle 7a passes upper end cap 2a, the piston rod of described driving cylinder 10 is connected with upper sliding axle 7a by the connecting head 12 that is arranged on upper sliding axle 7a upper end, described upper end cap 2a middle part extends to form the guide-localization section in valve body 1, be provided with guide-localization cover 13 on described between the guide-localization section of sliding axle 7a and upper end cap 2a, described guide-localization cover 13 fixes by the limited ring 14 that is arranged on upper end cap 2a.
Working principle of the present utility model: as shown in Figure 3, be the state of vacuum pump and vacuum chamber this moment, namely vacuumize state, under this state, piston assembly is in the lowermost end of the movable stroke of piston assembly under the effect that drives cylinder, and this moment, upper piston and middle cavity upper end projection section fitted tightly, middle cavity and upper cavity are isolated fully, and lower piston separates with middle cavity lower end projection section, so that middle cavity is communicated with lower chamber, thereby realizes the purpose that vacuumizes; When the needs vacuum breaker, piston assembly is moved to the top of the movable stroke of piston assembly in the effect that drives cylinder, this moment, lower piston and middle cavity lower end projection section fitted tightly, middle cavity and lower chamber are isolated fully, and upper piston separates with middle cavity upper end projection section, so that middle cavity is communicated with upper cavity, thereby realize the purpose of vacuum breaker.
The above is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. three-way valve, comprise valve body (1) and be arranged on the interior piston assembly of valve body (1), it is characterized in that: two ends, described valve body (1) up and down are respectively arranged with upper end cap (2a) and lower end cap (2b), described valve body (1) inside is divided into the upper cavity (3a) that is interconnected, middle cavity (3b) and lower chamber (3c), be respectively arranged with on described valve body (1) and upper cavity (3a), the corresponding opening A(4a that is communicated with of middle cavity (3b) and lower chamber (3c)), opening B(4b) and open C (4c), described piston assembly comprises upper piston (5a) and the lower piston (5b) that is separately positioned in upper cavity (3a) and lower chamber (3c), described upper piston (5a) and lower piston (5b) interconnect by the connecting rod (6) that is arranged in middle cavity (3b), valve body (1) the inwall upper and lower end that described middle cavity (3b) is corresponding is boss structure, described upper piston (5a) lower end surface can be corresponding with middle cavity (3b) valve body (1) inwall upper end projection section fit tightly, so that upper cavity (3a) and middle cavity (3b) isolation mutually, described lower piston (5b) upper-end surface can be corresponding with middle cavity (3b) valve body (1) inwall lower end projection section fit tightly, so that lower chamber (3c) and middle cavity (3b) isolation mutually, described piston assembly is by its moving up and down in valve body (1) of driving mechanisms control.
2. three-way valve according to claim 1, it is characterized in that: be fixedly installed respectively upper sliding axle (7a) and downslide moving axis (7b) at two ends, described connecting rod (6) up and down, described upper piston (5a) fixes on the top of connecting rod (6) by upper sliding axle (7a) and the upper limit packing ring (8a) that is arranged on connecting rod (6), and described lower piston (5b) is by downslide moving axis (7b) and be arranged on lower limit packing ring (8b) fixing on connecting rod (6) in the bottom of connecting rod (6).
3. three-way valve according to claim 2 is characterized in that: the junction of sliding axle (7a) and upper piston (5a) and downslide moving axis (7b) are respectively arranged with the O RunddichtringO with the junction of lower piston (5b) on described.
4. three-way valve according to claim 2, it is characterized in that: described driving mechanism comprises the driving cylinder (10) that is arranged on fitting seat (9), described fitting seat (9) is connected with screw mandrel (11) on being fixed on upper end cap (2a), the upper end of described upper sliding axle (7a) passes upper end cap (2a), and the piston rod of described driving cylinder (10) is connected with upper sliding axle (7a) by the connecting head (12) that is arranged on upper sliding axle (7a) upper end.
5. three-way valve according to claim 4, it is characterized in that: extend to form the guide-localization section in the middle part of described upper end cap (2a) in valve body (1), be provided with guide-localization cover (13) between the guide-localization section of sliding axle (7a) and upper end cap (2a) on described, described guide-localization cover (13) fixes by the limited ring (14) that is arranged on upper end cap (2a).
6. the described three-way valve of any one according to claim 1 to 5, it is characterized in that: the upper opening A(4a that arranges of the valve body (1) that described upper cavity (3a) is corresponding) be communicated with atmosphere, the upper opening B(4b that arranges of the valve body (1) that described middle cavity (3b) is corresponding) be communicated with vacuum chamber joint (15), the upper open C (4c) that arranges of the valve body (1) that described lower chamber (3c) is corresponding is communicated with vacuum pump adapter (16).
7. three-way valve according to claim 6, is characterized in that: be respectively arranged with the O RunddichtringO at described vacuum chamber joint (15), vacuum pump adapter (16) and lower end cap (2b) with the junction that valve body (1) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622377 CN202927134U (en) | 2012-11-22 | 2012-11-22 | Three-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622377 CN202927134U (en) | 2012-11-22 | 2012-11-22 | Three-way valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202927134U true CN202927134U (en) | 2013-05-08 |
Family
ID=48217093
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220622377 Expired - Lifetime CN202927134U (en) | 2012-11-22 | 2012-11-22 | Three-way valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202927134U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798376A (en) * | 2019-03-18 | 2019-05-24 | 湖南真创环保科技有限公司 | Schmidt's vacuum air valve |
| WO2023087249A1 (en) * | 2021-11-19 | 2023-05-25 | 富准精密模具(嘉善)有限公司 | Vacuum switching valve and suction system using vacuum switching valve |
-
2012
- 2012-11-22 CN CN 201220622377 patent/CN202927134U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109798376A (en) * | 2019-03-18 | 2019-05-24 | 湖南真创环保科技有限公司 | Schmidt's vacuum air valve |
| WO2023087249A1 (en) * | 2021-11-19 | 2023-05-25 | 富准精密模具(嘉善)有限公司 | Vacuum switching valve and suction system using vacuum switching valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102951319A (en) | Negative-suction leak-proof filling valve | |
| CN202927134U (en) | Three-way valve | |
| CN203051843U (en) | Vacuum three-way valve | |
| CN205298388U (en) | Damping air spring | |
| CN109780262A (en) | A kind of multi-joint reversal valve | |
| CN201972985U (en) | Opening-closing bilateral control cartridge valve | |
| CN205172926U (en) | Sealed piston | |
| CN102305309B (en) | Hydraulic damping device for valve | |
| CN105152116A (en) | Pseudo cup device for cleaning filling valve | |
| CN201575000U (en) | Stroke limit unloading valve for oil cylinder pistons | |
| CN202220898U (en) | Hydraulic damping device for valve | |
| CN204512485U (en) | Pneumatic vacuum push-pull valve | |
| CN104712781B (en) | Pneumatic vacuum gate valve | |
| CN104019274B (en) | A kind of auto-locking suspension liquid-operated flat valve | |
| CN201554876U (en) | Straight-through floating-ball valve | |
| CN201973289U (en) | Two-position and five-way valve | |
| CN203286053U (en) | Straight-through type quick exhaust valve | |
| CN204824120U (en) | Filling valve washs false cup device of usefulness | |
| CN202926549U (en) | Oil-free vertical type vacuum pump | |
| CN204201180U (en) | A kind of leading type multifunctional electromagnetic valves | |
| CN203656337U (en) | Combined valve execution device | |
| CN102818064B (en) | Bistable state reversing valve with spring interconnection resetting two-contact control function | |
| CN203115111U (en) | Safe stop valve | |
| CN201898093U (en) | Direct-acting sealing mechanism | |
| CN204704424U (en) | A kind of valve pocket internal structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130508 |