CN204025884U - Crystallization-preventive selector valve - Google Patents
Crystallization-preventive selector valve Download PDFInfo
- Publication number
- CN204025884U CN204025884U CN201420283102.4U CN201420283102U CN204025884U CN 204025884 U CN204025884 U CN 204025884U CN 201420283102 U CN201420283102 U CN 201420283102U CN 204025884 U CN204025884 U CN 204025884U
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- Prior art keywords
- valve
- valve plate
- crystallization
- preventive
- heat
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Abstract
The utility model relates to valve field, specifically disclose a kind of crystallization-preventive selector valve, comprise three way valve, an opening of described three way valve is total interface, opening two is bifurcations in addition, the joint of described total interface and two bifurcations arranges one piece of valve plate respectively, and valve plate is respectively the first valve plate and the second valve plate; Described three way valve outside is provided with heat-preservating shell, and described heat-preservating shell is provided with insulation interface, and the joint of total interface of described three way valve and two bifurcations also has a circle heat and portals, the total interface side be positioned at when valve plate is closed and heat is portalled.This crystallization-preventive selector valve without dead band and good airproof performance, can effectively prevent medium crystallization or solidify, ensure that smooth unlatching and the sealability of each valve plate of selector valve.
Description
Technical field
The utility model relates to a kind of valve, specifically a kind of crystallization-preventive selector valve.
Background technique
In the industrial production, valve obtains to be applied more and more widely, and generally uses with the form of valve group, and namely the import of two valves is connected by a three-way pipe, and the other end of three-way pipe is medium general import.The medium that need transmit enters inner chamber from the import of three-way pipe and valve, then leaves from outlet, is provided with valve plate in the lumen for closed inner chamber; Two valves change the flow direction of medium by the open and-shut mode switching valve plate.
Owing to adopting two valves, not only cost is higher, and commutation can not synchronously be carried out, and therefore creates selector valve, but existing selector valve can not apply some special envoy fields, as medium (as: melamine) the very easily crystallization under static and low-temperature condition for some kind, use selector valve control such MEDIA FLOW to time can run into such problem: the medium being in the suction side of closed condition valve plate does not flow, and temperature is lower, form dead band, condition is created to the crystallization of medium, the contacting point of valve plate and itself and valve seat can be set in after medium crystallization, have a strong impact on smooth keying and the sealability of valve plate, this selector valve is caused to scrap replacing, produce and stop work, cause huge economic loss.
Model utility content
The purpose of this utility model is to provide a kind of without dead band and the crystallization-preventive selector valve of good airproof performance, and this valve group can effectively prevent medium crystallization or solidify, and ensure that smooth unlatching and the sealability of selector valve.
For achieving the above object, the utility model provides following technological scheme:
A kind of crystallization-preventive selector valve, comprise three way valve, an opening of described three way valve is total interface, and opening two is bifurcations in addition, and the joint of described total interface and two bifurcations arranges one piece of valve plate respectively, and valve plate is respectively the first valve plate and the second valve plate; Described three way valve outside is provided with heat-preservating shell, and described heat-preservating shell is provided with insulation interface, and the joint of total interface of described three way valve and two bifurcations also has a circle heat and portals, the total interface side be positioned at when valve plate is closed and heat is portalled.
As further program of the utility model: described first valve plate is arranged on driven shaft, second valve plate is arranged on driving shaft, described driving shaft connects driven shaft by driving crank, connecting rod and driven crank, and driving shaft, driving crank, connecting rod, driven crank and driven shaft form fourbar linkage.
As further program of the utility model: described three way valve is chevron shaped.
As further program of the utility model: on described three way valve, heap is welded with the valve seat of the cemented carbide coordinated with valve plate.
As further program of the utility model: described valve plate is provided with the valve plate seal ring coordinated with valve seat.
Compared with prior art, the beneficial effects of the utility model are: first the hot gas that this crystallization-preventive selector valve loads enters in heat-preservating shell from insulation interface, and carry out guarantor's mild heat to three way valve, then portalling from heat enters into three way valve inside; If the first valve plate is in closed condition, now the second valve plate is in opening state, hot gas forms barrier layer at total interface side of the first valve plate, and flow to the second valve plate with medium, form hot fluid, make the dead band at this place become district alive, effectively prevent the total interface side crystallization of medium at the first valve plate.
Accompanying drawing explanation
Fig. 1 is the structural representation of crystallization-preventive selector valve;
Fig. 2 is the structural representation of changement in crystallization-preventive selector valve;
Fig. 3 is the A portion enlarged view in Fig. 1;
In figure: 1-three way valve, 2-second valve plate, 3-heat-preservating shell, 4-insulation interface, 5-first valve plate, 6-heat are portalled, 7-driving shaft, 8-driving crank, 9-connecting rod, the driven crank of 10-, 11-driven shaft, 12-valve seat, 13-valve plate seal ring.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technological scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1-3, in the utility model embodiment, a kind of crystallization-preventive selector valve, comprise three way valve 1, described three way valve 1 is chevron shaped, an opening is total interface, opening two is bifurcations in addition, the joint of described total interface and two bifurcations arranges one piece of valve plate respectively, valve plate is respectively the first valve plate 5 and the second valve plate 2, described first valve plate 5 is arranged on driven shaft 11, second valve plate 2 is arranged on driving shaft 7, described driving shaft 7 is by driving crank 8, connecting rod 9 and driven crank 10 connect driven shaft 11, and driving shaft 7, driving crank 8, connecting rod 9, driven crank 10 and driven shaft 11 form fourbar linkage, the interlock of the first valve plate 5 and the second valve plate 2 is realized by four bar structures, guarantee one is opened one and is closed, on described three way valve 1, heap is welded with the valve seat 12 of the cemented carbide coordinated with valve plate, described valve plate is provided with the valve plate seal ring 13 coordinated with valve seat 12, described three way valve 1 outside is provided with heat-preservating shell 3, described heat-preservating shell 3 be provided with insulation interface 4, total interface of described three way valve 1 and the joint of two bifurcations also have a circle heat and portal 6, and heat portal 6 be positioned at valve plate closedown time total interface side.During use, hot gas first from insulation interface 4 enter in heat-preservating shell 3, guarantors mild heat is carried out to three way valve 1, then from heat portal 6 enter into three way valve 1 inside; If the first valve plate 5 is in closed condition, now the second valve plate 2 is in opening state, hot gas forms barrier layer at total interface side of the first valve plate 5, and flow to the second valve plate 2 with medium, form hot fluid, make the dead band at this place become district alive, effectively prevent the total interface side crystallization of medium at the first valve plate 5; Can wash away the second valve plate 2 simultaneously, prevent medium from the second valve plate 2, piling up crystallization; When the first valve plate 5 is in opening state, principle is the same.The pressure of air inlet in whole process should be greater than the working pressure of medium, to ensure to produce stable barrier layer or hot fluid, and prevents medium from portalling 6 anti-fillings out from heat.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any reference character in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to mode of execution, but not each mode of execution only comprises an independently technological scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technological scheme in each embodiment also through appropriately combined, can form other mode of executions that it will be appreciated by those skilled in the art that.
Claims (5)
1. a crystallization-preventive selector valve, comprise three way valve (1), it is characterized in that, an opening of described three way valve (1) is total interface, opening two is bifurcations in addition, the joint of described total interface and two bifurcations arranges one piece of valve plate respectively, and valve plate is respectively the first valve plate (5) and the second valve plate (2); Described three way valve (1) outside is provided with heat-preservating shell (3), described heat-preservating shell (3) is provided with insulation interface (4), total interface of described three way valve (1) and the joint of two bifurcations also have a circle heat and portal (6), and heat is portalled, (6) are positioned at total interface side when valve plate is closed.
2. crystallization-preventive selector valve according to claim 1, it is characterized in that, described first valve plate (5) is arranged on driven shaft (11), second valve plate (2) is arranged on driving shaft (7), described driving shaft (7) connects driven shaft (11) by driving crank (8), connecting rod (9) and driven crank (10), and driving shaft (7), driving crank (8), connecting rod (9), driven crank (10) and driven shaft (11) form fourbar linkage.
3. crystallization-preventive selector valve according to claim 1 and 2, is characterized in that, described three way valve (1) is for chevron shaped.
4. crystallization-preventive selector valve according to claim 3, is characterized in that, the upper heap of described three way valve (1) is welded with the valve seat (12) of the cemented carbide coordinated with valve plate.
5. crystallization-preventive selector valve according to claim 4, is characterized in that, described valve plate is provided with the valve plate seal ring (13) coordinated with valve seat (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420283102.4U CN204025884U (en) | 2014-05-30 | 2014-05-30 | Crystallization-preventive selector valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420283102.4U CN204025884U (en) | 2014-05-30 | 2014-05-30 | Crystallization-preventive selector valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204025884U true CN204025884U (en) | 2014-12-17 |
Family
ID=52065749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420283102.4U Expired - Fee Related CN204025884U (en) | 2014-05-30 | 2014-05-30 | Crystallization-preventive selector valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204025884U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108432408A (en) * | 2018-05-25 | 2018-08-24 | 山东农业大学 | A kind of novel pneumatic seeder switching device |
-
2014
- 2014-05-30 CN CN201420283102.4U patent/CN204025884U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108432408A (en) * | 2018-05-25 | 2018-08-24 | 山东农业大学 | A kind of novel pneumatic seeder switching device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20150530 |
|
| EXPY | Termination of patent right or utility model |