CN202580257U - Straight-tooth transmission gate valve - Google Patents
Straight-tooth transmission gate valve Download PDFInfo
- Publication number
- CN202580257U CN202580257U CN 201220242080 CN201220242080U CN202580257U CN 202580257 U CN202580257 U CN 202580257U CN 201220242080 CN201220242080 CN 201220242080 CN 201220242080 U CN201220242080 U CN 201220242080U CN 202580257 U CN202580257 U CN 202580257U
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- Prior art keywords
- gear
- valve
- gate valve
- pairs
- straight
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- Expired - Lifetime
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Abstract
The utility model discloses a straight-tooth transmission gate valve which comprises a valve body (1), a valve stem (2) and a transmission (3). The transmission (3) drives the valve stem (2) to rotate and comprises two pairs of meshed gears and a rotary shaft (4), a gear cover box (5) is connected to the upper side of the valve body (1), the two pairs of meshed gears are positioned in the gear cover box (5), the rotary shaft (4) is movably connected onto the gear cover box (5), a hand wheel (6) is fixedly connected to the outer end of the rotary shaft (4), the two pairs of meshed gears include a first gear (7), a second gear (8), a third gear (9) and a fourth gear (10), the first gear (7) and the second gear (8) respectively realize gearing-down and are meshed with each other, the third gear (9) and the fourth gear (10) respectively realize gearing-down and are meshed with each other, the first gear (7) is fixedly connected with the other end of the rotary shaft (4), the second gear (8) and the third gear (9) are coaxially and fixedly connected with each other, and the fourth gear (10) is fixedly connected with the valve stem (2). The straight-tooth transmission gate valve has the advantage that a valve plate of the gate valve can be opened or closed by low rotating force under the condition that water pressure is high, so that normal running of a pipe network system is guaranteed.
Description
Technical field
The utility model relates to a kind of gate valve, particularly a kind of straight-tooth transmission gate valve.
Background technique
Gate valve is widely used on the pipeline of industries such as oil, chemical industry, pharmacy, metallurgy, coal, power industry, urban water supply and sewerage; Be used for pilot line medium circulation and block; Be applicable to multiple media such as water, steam, oil product, nitric acid, acetic acid, Oxidant, urea, do not receive MEDIA FLOW to restriction.Metallic seal gate valve commonly used generally contains compositions such as valve body, valve gap, flashboard, valve rod, seal ring, Stem Mut, handwheel or umbrella tooth.Rotate handwheel or umbrella tooth, only in valve body, rotate, drive valve plate and rise and descend, reach the effect of opening and closing through valve rod.Especially for the gate valve between DN400～DN1200 heavy caliber, in practical application, it is high often to run into flashboard locking or hydraulic pressure, and hoisting capacity is excessive, rotates handwheel and umbrella tooth, and flashboard can't be opened.Sometimes for the ease of opening, increased bypass valve, but still because of opening force is not enough, flashboard can't be opened.Still more, gate valve is loaded in the deep-well more, and it is not too convenient to increase bypass valve, also can't descend to remove out bypass valve to the down-hole, and the gate valve occupation of land space that has bypass valve in addition is big, and expense is high.
Summary of the invention
The utility model provides a kind of straight-tooth transmission gate valve, its objective is that solution valve plate when hydraulic pressure is big is difficult for the problem of opening and closing.
The technological scheme of the utility model is: a kind of straight-tooth transmission gate valve; It comprises the transmission device that valve body, valve rod and actuate valve stem are rotated, and described transmission device comprises two pairs of meshed gears and rotating shaft, and described valve body top is connected with the gear top box; Two pairs of meshed gears are positioned at the gear top box; Described rotating shaft is actively connected on the gear top box, and the outer end of rotating shaft is connected with handwheel, and described two pairs of engaging gears are respectively realizes gearing down and intermeshing first gear and second gear; Realize gearing down and intermeshing the 3rd gear and the 4th gear; First gear and rotating shaft the other end are affixed, second gear and the 3rd gear is coaxial is connected, and the 4th gear and valve rod are connected.
Further improve, the center line of the center line of described first gear and the 4th gear coincides.
The beneficial effect of the utility model is: the transmission device that the utility model has improved gate valve utilizes two groups of gear meshing transmissions to realize the secondary speed-reducing transmission.The kind of drive of the utility model and traditional handwheel and valve rod are connected and rotate handwheel and compare with the kind of drive that drives valve rod and open and close up and down, and the utility model can provide the normal operation of the valve plate protection pipe network system of less rotatory force opening and closing gate valve under the bigger situation of hydraulic pressure.
Description of drawings
Fig. 1 is the structural representation of the utility model.
Embodiment
Present embodiment is as shown in Figure 1; It comprises the transmission device 3 that valve body 1, valve rod 2 and actuate valve stem 2 are rotated, and transmission device 3 comprises two pairs of meshed gears and rotating shaft 4, and described valve body 1 top is connected with gear top box 5; Two pairs of meshed gears are positioned at gear top box 5; Described rotating shaft 4 is actively connected on the gear top box 5, and the outer end of rotating shaft 4 is connected with handwheel 6, and described two pairs of engaging gears are respectively realizes gearing down and intermeshing first gear 7 and second gear 8; Realize gearing down and intermeshing the 3rd gear 9 and the 4th gear 10; First gear 7 is affixed with rotating shaft 4 the other end, second gear 8 and the 3rd gear 9 coaxial being connected, and the 4th gear 10 is connected with valve rod 2.The central lines of described first gear 7 and the 4th gear 10.
Preferably, the center line of the center line of first gear 7 of the utility model and the 4th gear 10 coincides.It is compact more to take such layout to make gear in the gear top box, arrange, has practiced thrift the space, and the transmission effect is better.
Compare with existing gate valve, the valve rod top of the utility model is provided with transmission device, transmission device adopt meshed transmission gear, handwheel provide a rotatory force through two groups of engaging gears realize twice deceleration with the rotatory force transmission to gate valve rod to realize the keying of valve plate.Particularly under the bigger environment of hydraulic pressure, the utility model can be in the normal operation of the valve plate protection pipe network system that less rotatory force opening and closing gate valve is provided.
Claims (2)
1. straight-tooth transmission gate valve; It comprises the transmission device (3) that valve body (1), valve rod (2) and actuate valve stem (2) are rotated; It is characterized in that described transmission device (3) comprises two pairs of meshed gears and rotating shaft (4); Described valve body (1) top is connected with gear top box (5), and two pairs of meshed gears are positioned at gear top box (5), and described rotating shaft (4) is actively connected on the gear top box (5); The outer end of rotating shaft (4) is connected with handwheel (6); Described two pairs of engaging gears are respectively realizes gearing down and intermeshing first gear (7) and second gear (8), realizes gearing down and intermeshing the 3rd gear (9) and the 4th gear (10), and first gear (7) is affixed with rotating shaft (4) the other end; Second gear (8) and coaxial being connected of the 3rd gear (9), the 4th gear (10) is connected with valve rod (2).
2. a kind of straight-tooth transmission gate valve according to claim 1 is characterized in that the center line of described first gear (7) and the center line of the 4th gear (10) coincide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220242080 CN202580257U (en) | 2012-05-28 | 2012-05-28 | Straight-tooth transmission gate valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220242080 CN202580257U (en) | 2012-05-28 | 2012-05-28 | Straight-tooth transmission gate valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202580257U true CN202580257U (en) | 2012-12-05 |
Family
ID=47249668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220242080 Expired - Lifetime CN202580257U (en) | 2012-05-28 | 2012-05-28 | Straight-tooth transmission gate valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202580257U (en) |
-
2012
- 2012-05-28 CN CN 201220242080 patent/CN202580257U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 244000 Anhui city of Tongling Province City North Avenue No. 188 Patentee after: Anhui Tongdu Flow Technology Co., Ltd. Address before: 244000 Anhui city in Tongling Province, north mountain lion Copper Road No. 188 Patentee before: Anhui Tongdu Valve Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |