CN203363218U - Worm gear transmission stop valve - Google Patents
Worm gear transmission stop valve Download PDFInfo
- Publication number
- CN203363218U CN203363218U CN 201320408709 CN201320408709U CN203363218U CN 203363218 U CN203363218 U CN 203363218U CN 201320408709 CN201320408709 CN 201320408709 CN 201320408709 U CN201320408709 U CN 201320408709U CN 203363218 U CN203363218 U CN 203363218U
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- valve
- worm
- casing
- worm gear
- worm screw
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Abstract
The utility model discloses a worm gear transmission stop valve. The worm gear transmission stop valve is also a seal type valve used for controlling forced stop of liquid media in a pipeline in pipeline valves. The worm gear transmission stop valve is structurally composed of a valve body, a valve cover, a valve clack, a valve base, a valve rod, a worm gear transmission device, a hand wheel and the like. The worm gear transmission stop valve is characterized in that a rotary shaft capable of rotating is additionally arranged in a box provided with a worm gear and a worm, a crank is arranged on the rotary shaft and is in transmission connection with the rotary shaft, the upper end of the valve rod is hinged to the crank, the worm gear is in transmission connection with the rotary shaft, driving power of the worm gear and the worm is transmitted to the valve rod through the rotary shaft, therefore, torque is relatively small, more labor is saved during operation, and starting and stopping seal is very reliable.
Description
Technical field
The utility model relates to the stop valve structure in a kind of pipeline valve, refers in particular to the worm drive stop valve.
Background technique
Stop valve is a kind of in many pipeline valves, is mainly used in controlling the effect of damming of liquid medium in pipeline and is widely used.Stop valve belongs to forces the fluid stopping sealing valve, so, when valve closing, must exert pressure to flap, to reach sealing surface, does not leak.Existing stop valve often adopts the handwheel kind of drive to carry out opening/shutting valve, drive Stem Mut and rotate and make valve rod be moved up and down to realize the keying of valve by rotating handwheel, this mode of operation required moment of torsion when throttle down is larger, as valve closed tight, often need to fasten with using extension lever or pipe tongs to assist, operation is trouble very." Manual driving mechanism for high-temperature high-pressure stop valve of electric power station " that disclosed China Patent No. is 201120059190.6, it has disclosed a kind of Manual drive mechanism by the operation of worm gear, worm screw, and comparing traditional handwheel, to fasten mode more simple undoubtedly in operation.Yet the worm gear in above-mentioned stop valve, worm structure design too simple and crude, sealing effect in actual use is not quite reliable.And the transmission of power of worm gear, worm screw is to do direct-connectedly with the valve rod of stop valve, during rotation, will inevitably be subject to great resistance, it is comparatively painstaking to operate.
Summary of the invention
Goal of the invention of the present utility model is to overcome the defect of prior art and a kind of rapid operation is provided, seals reliable worm drive stop valve.
Goal of the invention of the present utility model realizes by following technical proposal:
A kind of worm drive stop valve, comprise that valve body, sealing are arranged on the valve gap at valve body top, are arranged on valve rod in valve body and valve gap, are arranged on worm gearing on valve gap, and the handwheel of operation worm gearing; Described valve body has water inlet port and the water outlet port be connected, and between the water-in and water-out port, is provided with valve seat; The upper and lower movable sealing of described valve rod is arranged in valve body and valve gap, this valve rod lower end is provided with flap, and flap is subject to the upper and lower motion of valve rod and forms the sealing keying with valve seat, the valve rod upper end connects worm gearing through valve gap, described worm gearing comprises the casing that is arranged on the valve gap end face, is provided with the rotating shaft on the bearing of two ends difference rotating support in casing in this casing; Described rotating shaft one end is provided with the crank be in transmission connection, and this crank end and described valve rod upper end are hinged; The described rotating shaft the other end is provided with the worm gear be in transmission connection, and this worm gear one side is provided with the worm screw be meshed, and the worm screw upper end is stretched out casing and connected handwheel, on the bearing of worm screw lower end rotating support in casing.
Described worm gear outer peripheral surface is provided with a spacing breach, be provided with spacing hole in described casing, be provided with stud bolt and connecting bolt in this spacing hole, the interior rotary spacing that forms worm gear of spacing breach of worm gear is stretched in this stud bolt the inner, and the outer end of this connecting bolt is provided with helmet and seals.
Described worm gear end is provided with the outer outer direction board of casing that is exposed at.
Be provided with flat thrust ball bearing and the little round nut of the supporting that rotates between described worm screw upper end and casing, this flat thrust ball bearing and little round nut are hermetically enclosed in casing by the upper end cap that is connected to box top.
The rotation supporting structure of described worm screw lower end and casing inner bearing is to be provided with the worm screw axle sleeve between worm screw lower end and casing, flat thrust ball bearing is installed in this worm screw axle sleeve, described worm screw lower end rotating support is on flat thrust ball bearing, the worm screw underpart connects adjusting nut through flat thrust ball bearing, and this adjusting nut is hermetically enclosed in casing by the lower end cap that is connected to tank floor again.
Being in transmission connection between being in transmission connection between described crank and rotating shaft, worm gear and rotating shaft is spline joint, also is provided with Cock screw on described crank.
Be provided with axle sleeve between described valve rod and valve gap.
Described valve rod lower end is provided with valve clack cover, and described flap is threaded on valve clack cover, forms the cone sealing between this flap and valve seat.
Described valve body is straight-through valve body, on the water inlet port of this valve body and water outlet port, is equipped with adpting flange.
Compared with prior art, the utility model is mainly the architecture advances that the stop valve that opens and closes for worm gear, worm drive carries out, it has set up a rotating rotating shaft in the casing that worm gear, worm screw are installed, and the crank that setting is in transmission connection in rotating shaft, the valve rod upper end is articulated and connected on crank, and worm drive is connected in rotating shaft, by rotating shaft by the driving transmission of power of worm gear, worm screw to valve rod, make that moment of torsion is less, operation is more laborsaving, and Open-close sealing is very reliable.
The accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present utility model.
Fig. 2 is right elevation of the present utility model (broken section).
The sectional structure schematic diagram that Fig. 3 is worm gearing.
Embodiment
Below in conjunction with above-mentioned accompanying drawing and adopt specific embodiment to be described in detail again the utility model.
As shown in Fig. 1 ~ Fig. 3, 1. valve body, 2. valve seat, 3. flap, 4. valve clack cover, 5. valve rod, 6. stud bolt, 7. packing ring, 8. valve gap, 9. worm gearing, 91. rotating shaft, 92. worm gear, 93. direction board, 94. case lid, 95. casing, 96. crank, 97. worm screw, 98. spacing breach, 10. filler, 11. Gland, 12. hold-down grid, 13. hex head bolt, 14. axle sleeve, 15. hex screw, 16. Cock screw, 17. "O"-ring, 18. handwheel, 19. flat key, 20. connecting pin, 21. left end cap, 22. angular contact ball bearing, 23. swing bolt, 24. helmet, 25. connecting bolt, 26. stud bolt, 27. lower end cap, 28. adjusting nut, 29. flat thrust ball bearing, 30. worm screw axle sleeve, 31. little round nut, 32. upper end cap.
The worm drive stop valve, as shown in Figure 1, it is also to force for controlling the pipeline liquid medium sealing valve dammed in pipeline valve, is mainly to consist of valve body 1, valve gap 8, flap 3, valve seat 2, valve rod 5, worm gearing 9 and handwheel 18 etc.
Described valve body 1 adopts bypass structure, therefore be respectively equipped with water inlet port and water outlet port that level is communicated with at the two ends of valve body, on this water-in and water-out port, is equipped with adpting flange, with the connection that facilitates external pipe, connects.
Have valve pocket in described valve body 1, in the middle of valve pocket, and into and out of the valve seat groove that is provided with an interior threaded hole structure between port, valve seat 2 is sealedly connected in this valve seat groove by outside thread; Be provided with the through hole of upper and lower connection in described valve seat 2, this through hole is a up big and down small taper hole structure.Valve body 1 end face is designed to middle end face of flange.
Described valve gap 8 is connected to by stud bolt 6 and hexagon nut on the middle end face of flange at valve body 1 top, is provided with packing ring 7 and connects sealing between valve gap 8 and valve body 1; This valve gap 8 is designed to Pierced structure, from the valve gap external enwergy, by openwork hole, observes in valve gap, and valve gap 8 end faces are made as flanged surface.
In described valve body 1 and valve gap 8, valve rod 5 is installed, this valve rod can be done upper and lower motion, valve rod 5 lower ends are provided with the valve clack cover 4 be fixedly connected with, and are provided with the flap 3 be threaded on valve clack cover, this flap be subject to valve rod 5 upper and lower motion and and form the cone sealing between valve seat 2 and open and close; Valve rod 5 upper ends are stretched in worm gearing 9 through valve gap 8, be provided with the multiple filling layers 10 by hold-down grid 12 and Gland 11 common sealings between valve rod 5 and bottom valve gap 8, thereby form the motive sealing of valve rod 5 motions, this hold-down grid 12 is connected on valve gap 8 by swing bolt 23 and hexagon nut.Simultaneously, hold-down grid 12, swing bolt 23 and hexagon nut just in time are positioned at the Pierced structure of valve gap 8.Be provided with axle sleeve 14 between valve rod 5 and top valve gap 8, this axle sleeve is fixed on valve gap 8 through Cock screw 16.
Described worm gearing 9 as shown in Figure 3, mainly comprise with hex head bolt 13 and valve gap 8 and connect fixing casing 95, this casing left end is provided with bearing mounting hole, right-hand member is provided with opening, and other parts of packing in casing 95 by opening, the case lid 94 that opening is connected with hex screw 15 is done hermetically enclosed; Be separated into left and right chamber in described casing 95, a horizontally disposed rotating shaft 91 also is installed simultaneously, the equal rotating support of this rotating shaft left end and middle part is on angular contact ball bearing 22, the angular contact ball bearing of left end is arranged in the bearing mounting hole of casing 95 left ends, then by left end cap 21, sealed, the angular contact ball bearing 22 at middle part is directly installed in casing 95.
Be provided with crank 96 in the left chamber of described casing 95, this crank is connected in rotating shaft 91 by spline drived, therefore can form eccentric rotary around rotating shaft, Cock screw 16 also is set simultaneously on crank 96 again further to be connected and fixed; Crank 96 ends form and are articulated and connected by connecting pin 20 with described valve rod 5 upper ends.
Be provided with worm gear 92 in the right chamber of described casing 95, this worm gear also is connected in rotating shaft 91 by spline drived, be provided with "O"-ring 17 sealing that rotates between worm gear and casing 95, the right side of worm gear 92 is connected by screw direction board 93, and this direction board is exposed at the case lid 94 of casing 95 right-hand members outward outward so that check.Described worm gear 92 outer peripheral surfaces are provided with the spacing breach 98 of a fan shape; and the relevant position in casing 95 is provided with spacing hole; be provided with stud bolt 26 and connecting bolt 25 in this spacing hole; this stud bolt is subject to the connecting bolt pushing tow to make the inner stretch in the spacing breach 98 of worm gear 92; thereby formed the rotary spacing of worm gear, and closed protective is made by the helmet 24 of rubber system in the outer end of connecting bolt 25.
Described worm gear 92 1 sides are provided with worm screw 97 and are meshed, this worm screw vertically is arranged in right chamber, and expose through casing 95 worm screw 97 upper ends, and this exposed junction is provided with by flat key 19 and makes the handwheel 18 be in transmission connection, then be connected and fixed with hex screw 15, come off to prevent handwheel 18; Be provided with flat thrust ball bearing 29 and the roundlet nut 31 of the supporting that rotates between worm screw 97 upper ends and casing 95, this flat thrust ball bearing and little round nut are sealed by the upper end cap 32 that is connected to casing 95 end faces, between upper end cap and casing 95, "O"-ring 17 all is set between upper end cap 32 and worm screw 97 forms sealing; Be provided with worm screw axle sleeve 30 between worm screw 97 lower ends and casing 95, flat thrust ball bearing 29 is installed in this worm screw axle sleeve, worm screw 97 lower end rotating supports are on flat thrust ball bearing, the worm screw underpart connects adjusting nut 28 through flat thrust ball bearing 29, and regulate worm screw 97 mounting points by adjusting nut, this adjusting nut 28 is sealed by the lower end cap 27 that is connected to casing 95 bottom surfaces again, "O"-ring 17 is set between lower end cap and casing 95 and forms and be connected sealing.
Working method of the present utility model is: operation handwheel 18 rotates through worm screw 97, worm gear 92 transferring power, drive crank 96 through rotating shaft 91 again and make eccentric rotary, now with the hinged valve rod 5 of crank, be driven and do upper and lower motion, realize that flap 3 and the sealing of valve seat 2 open and close.
The above is only better embodiment of the present utility model, and the equivalence of doing according to the described structure of the utility model patent claim, feature and principle therefore all changes or modifies, and is included in the utility model patent claim.
Claims (9)
1. a worm drive stop valve, comprise that valve body (1), sealing are arranged on the valve gap (8) at valve body top, are arranged on valve rod (5) in valve body (1) and valve gap (8), are arranged on worm gearing (9) on valve gap (8), and operate the handwheel (18) of worm gearing; Described valve body (1) has water inlet port and the water outlet port be connected, and is provided with valve seat (2) between the water-in and water-out port; The upper and lower movable sealing of described valve rod (5) is arranged in valve body (1) and valve gap (8), this valve rod (5) lower end is provided with flap (3), and flap is subject to the upper and lower motion of valve rod (5) and forms the sealing keying with valve seat (2), valve rod (5) upper end connects worm gearing (9) through valve gap (8), it is characterized in that described worm gearing (9) comprises the casing (95) that is arranged on valve gap (8) end face, be provided with the rotating shaft (91) on the bearing of two ends difference rotating support in casing in this casing; Described rotating shaft one end is provided with the crank (96) be in transmission connection, and this crank end and described valve rod (5) upper end are hinged; Described rotating shaft (91) the other end is provided with the worm gear (92) be in transmission connection, this worm gear one side is provided with the worm screw (97) be meshed, the worm screw upper end is stretched out casing (95) and is connected handwheel (18), on the bearing of worm screw (97) lower end rotating support in casing (95).
2. worm drive stop valve according to claim 1, it is characterized in that described worm gear (92) outer peripheral surface is provided with a spacing breach (98), described casing is provided with spacing hole in (95), be provided with stud bolt (26) and connecting bolt (25) in this spacing hole, the interior rotary spacing that forms worm gear of spacing breach (98) of worm gear (92) is stretched in this stud bolt (26) the inner, and the outer end of this connecting bolt (25) is provided with helmet (24) and seals.
3. worm drive stop valve according to claim 1, is characterized in that described worm gear (92) end is provided with the outer outer direction board (93) of casing (95) that is exposed at.
4. worm drive stop valve according to claim 1, it is characterized in that between described worm screw (97) upper end and casing (95) being provided with the flat thrust ball bearing (29) and the little round nut (31) that rotate and support, this flat thrust ball bearing and little round nut are hermetically enclosed in casing by the upper end cap (32) that is connected to casing (95) end face.
5. worm drive stop valve according to claim 1, the rotation supporting structure that it is characterized in that described worm screw (97) lower end and casing (95) inner bearing is to be provided with worm screw axle sleeve (30) between worm screw (97) lower end and casing (95), flat thrust ball bearing (29) is installed in this worm screw axle sleeve, described worm screw (97) lower end rotating support is on flat thrust ball bearing (29), the worm screw underpart connects adjusting nut (28) through flat thrust ball bearing (29), this adjusting nut is hermetically enclosed in casing by the lower end cap (27) that is connected to casing (95) bottom surface again.
6. worm drive stop valve according to claim 1, it is characterized in that being in transmission connection between being in transmission connection between described crank (96) and rotating shaft (91), worm gear (92) and rotating shaft (91) is spline joint, also is provided with Cock screw (16) on described crank (96).
7. worm drive stop valve according to claim 1, is characterized in that being provided with axle sleeve (14) between described valve rod (5) and valve gap (8).
8. worm drive stop valve according to claim 1, is characterized in that described valve rod (5) lower end is provided with valve clack cover (4), and it is upper that described flap (3) is threaded in valve clack cover (4), forms the cone sealing between this flap (3) and valve seat (2).
9. worm drive stop valve according to claim 1, is characterized in that described valve body (1) is straight-through valve body, is equipped with adpting flange on the water inlet port of this valve body and water outlet port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320408709 CN203363218U (en) | 2013-07-10 | 2013-07-10 | Worm gear transmission stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320408709 CN203363218U (en) | 2013-07-10 | 2013-07-10 | Worm gear transmission stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203363218U true CN203363218U (en) | 2013-12-25 |
Family
ID=49810983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320408709 Expired - Lifetime CN203363218U (en) | 2013-07-10 | 2013-07-10 | Worm gear transmission stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203363218U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253783A (en) * | 2020-09-23 | 2021-01-22 | 江苏理工学院 | Pump control motor drive type large-caliber fixed ball valve |
-
2013
- 2013-07-10 CN CN 201320408709 patent/CN203363218U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112253783A (en) * | 2020-09-23 | 2021-01-22 | 江苏理工学院 | Pump control motor drive type large-caliber fixed ball valve |
| CN112253783B (en) * | 2020-09-23 | 2022-05-13 | 江苏理工学院 | Pump-controlled motor-driven large-caliber fixed ball valve |
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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: 20131225 |