CN202992214U - On-off mechanism of electric gate valve - Google Patents
On-off mechanism of electric gate valve Download PDFInfo
- Publication number
- CN202992214U CN202992214U CN 201220603264 CN201220603264U CN202992214U CN 202992214 U CN202992214 U CN 202992214U CN 201220603264 CN201220603264 CN 201220603264 CN 201220603264 U CN201220603264 U CN 201220603264U CN 202992214 U CN202992214 U CN 202992214U
- Authority
- CN
- China
- Prior art keywords
- nut
- gate valve
- electric gate
- valve
- bull gear
- 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 - Fee Related
Links
Abstract
The utility model discloses an on-off mechanism of an electric gate valve, including a bull gear, a nut, and a valve shaft. The bull gear drives the nut, a sliding bearing bush is supported between the nut and the valve shaft, and a transmission ring and a bearing sleeve are arranged between the bull gear and the nut. Because the transmission ring is additionally arranged between the bull gear and the nut, the force applied on the nut by the gear is changed from an original unilateral pushing manner into a couple manner, thereby preventing excessive friction resistance; meanwhile, because the bearing sleeve is additionally arranged between the bull gear and the nut to bear the radial force, the gate valve can be freely turned on and off, thereby preventing the cooperative loosening between valve racks and prolonging the service lifetime of the electric gate valve.
Description
Technical field
The utility model belongs to the technical field of closure member opening and closing, relates in particular to a kind of opening/closing mechanism of electric gate valve.
Background technique
At present the motor of electric gate valve is arranged on pinion shaft, by the gearwheel transmission nut, makes the valve shaft opening/shutting valve that moves up and down.Support with Sliding bush between nut and leading screw.After motor starting, gate valve opens and closes malfunctioning.Tracing it to its cause is the pinion drive gearwheel, produce radial component, make the one-sided pushing valve shaft of nut, cause very large surface friction drag (sliding friction), add upper cap nut and become cantilever to install, rigidity is little, stressed rear generation is crooked, and the matching loose between vavle shelf causes the valve shaft resistance very large, and gate valve opens and closes malfunctioning.
The model utility content
The technical problems to be solved in the utility model is to provide a kind of opening/closing mechanism of electric gate valve, can extend the working life of electric gate valve.
In order to solve the problems of the technologies described above, the utility model provides following technological scheme: a kind of opening/closing mechanism of electric gate valve, comprise gearwheel, nut and valve shaft, the gearwheel transmission nut, adopt the Sliding bush supporting between nut and valve shaft, be provided with transmission ring and supporting sleeve between described gearwheel and nut.
Compared with prior art, the utility model has the advantage of: add a transmission ring between gearwheel and nut, make the power of gear mesh nut make couple into by original one-sided pushing, avoided excessive surface friction drag, increase simultaneously supporting sleeve, with bearing radial force, gate valve can be opened and closed freely, avoid the matching loose between vavle shelf, extended the working life of electric gate valve.
Further, described transmission ring adopts biconvex shoulder structure, can shield to nut.
Description of drawings
Below in conjunction with drawings and Examples, technical solutions of the utility model are further illustrated:
Fig. 1 is the opening/closing mechanism embodiment's of the utility model electric gate valve structural representation.
Embodiment
As shown in Figure 1, the opening/closing mechanism of a kind of electric gate valve of the utility model comprises gearwheel 1, nut 2 and valve shaft 3, gearwheel 1 transmission nut 2, adopt the Sliding bush supporting between nut 2 and valve shaft 3, be provided with transmission ring 4 and supporting sleeve 5 between described gearwheel 1 and nut 2.Described transmission ring 4 adopts biconvex shoulder structure, can shield to nut 2.
The utility model adds a transmission ring 4 between gearwheel 1 and nut 2, make the power of gear mesh nut 2 make couple into by original one-sided pushing, avoided excessive surface friction drag, increase simultaneously supporting sleeve 5, with bearing radial force, gate valve can be opened and closed freely, avoided the matching loose between vavle shelf, extended the working life of electric gate valve.
For a person skilled in the art; under the prerequisite that does not break away from the utility model structure; can also make some distortion and improvement, these also should be considered as protection domain of the present utility model, and these can not affect effect and practical applicability that the utility model is implemented.
Claims (2)
1. the opening/closing mechanism of an electric gate valve, comprise gearwheel, nut and valve shaft, and the gearwheel transmission nut adopts the Sliding bush supporting between nut and valve shaft, it is characterized in that: be provided with transmission ring and supporting sleeve between described gearwheel and nut.
2. the opening/closing mechanism of electric gate valve as claimed in claim 1, is characterized in that: described transmission ring employing biconvex shoulder structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603264 CN202992214U (en) | 2012-11-15 | 2012-11-15 | On-off mechanism of electric gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220603264 CN202992214U (en) | 2012-11-15 | 2012-11-15 | On-off mechanism of electric gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202992214U true CN202992214U (en) | 2013-06-12 |
Family
ID=48563395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220603264 Expired - Fee Related CN202992214U (en) | 2012-11-15 | 2012-11-15 | On-off mechanism of electric gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202992214U (en) |
-
2012
- 2012-11-15 CN CN 201220603264 patent/CN202992214U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20131115 |