CN203604691U - Cast steel gate valve of water supply system - Google Patents

Cast steel gate valve of water supply system Download PDF

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Publication number
CN203604691U
CN203604691U CN201320758551.5U CN201320758551U CN203604691U CN 203604691 U CN203604691 U CN 203604691U CN 201320758551 U CN201320758551 U CN 201320758551U CN 203604691 U CN203604691 U CN 203604691U
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CN
China
Prior art keywords
valve
cast steel
steel gate
support
gate valve
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
Application number
CN201320758551.5U
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Chinese (zh)
Inventor
魏显飞
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Ningbo Amico Copper Valves Manufacturing Co Ltd
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Ningbo Amico Copper Valves Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
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Application filed by Ningbo Amico Copper Valves Manufacturing Co Ltd filed Critical Ningbo Amico Copper Valves Manufacturing Co Ltd
Priority to CN201320758551.5U priority Critical patent/CN203604691U/en
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Publication of CN203604691U publication Critical patent/CN203604691U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a cast steel gate valve of a water supply system. The cast steel gate valve is a common water supply pipeline valve. The cast steel gate valve mainly comprises a valve body, a gate plate, a valve rod, a bonnet, a packing gland, a hand wheel, a support, valve rod nuts and lock nuts, wherein an oil cup is additionally arranged outside the support and used for oiling and lubrication. Friction between the valve rod nuts and the support is effectively reduced, the opening torque is reduced, and the service life of the cast steel gate valve is prolonged; due to the fact that appropriate wear-resistant hard alloy is arranged between the gate plate and a valve seat sealing surface in a bead weld mode, abrasion between the gate plate and the valve seat sealing surface can be reduced, and sealing reliability is improved; meanwhile, due to the facts that a reducing port serves as a valve body flow pass port, and the valve body flow pass port is thickened appropriately, the structural design can be more reasonable, material loss can be effectively reduced, the production cost is low, energy is saved, the environment is protected, and the requirement of a user can be met to a greater extent.

Description

Water system cast steel gate valve
Technical field
The utility model relates to the gate valve structure in a kind of pipeline valve, specifically confession under directions water system cast steel gate valve.
Background technique
Cast steel gate valve belongs to a kind of conventional pipeline valve, " a kind of flashboard double seal Wedge gate valve that strengthens " that its structure is 201320100026.4 to disclosed China Patent No. is similar, is to be mainly made up of valve body, valve gap, valve seat, support, valve rod, Stem Mut, handwheel, filler and Gland etc.At present, there is following defect in known cast steel gate valve conventionally: one, Stem Mut and support place be because of external environmental factor, and permanent use can lure erosion, and then causes killing, even cannot switch valve situation; Two, the cooperation between flashboard and sealing surface of seat is not good, and easily wearing and tearing, affect working life; Three, from GB/T12234 correcting in 2007, transfer to after petroleum gas special valve by being applicable to General valve, there is the cast steel gate valve of the structure characteristics such as wall thickness, heavy type, thick valve rod for water system, often occur the phenomenons such as function is unnecessary, waste of material is serious.In order to improve above-mentioned condition, design that the more rational water system cast steel gate valve of a kind of structure is extremely necessary beyond doubt.
Summary of the invention
Technical problem to be solved in the utility model be to overcome the defect of prior art and a kind of energy-conserving and environment-protective be provided, press close to operating mode, sealing is reliable, long service life, water system cast steel gate valve rational in infrastructure.
Technical problem of the present utility model is achieved through the following technical solutions:
A kind of water system cast steel gate valve, comprises valve body, is arranged on valve flowing channel in valve body, is arranged on sealing surface of seat in valve flowing channel and for cutting off the flashboard of described sealing surface of seat; Described valve body top is provided with the valve gap being tightly connected, and this valve gap top is provided with support; The valve rod of doing elevating movement is installed in described valve gap and support, and this valve rod lower end is connected with flashboard, upper end stretches out valve gap and support exposes; Between described valve rod and support, be provided with the Stem Mut being threaded, this Stem Mut is provided with the handwheel that suit connects outward, and described support is provided with lubricating cup outward, the frictional force between this lubricating cup oil injecting lubricating Stem Mut and support.
Between described flashboard and sealing surface of seat, be respectively equipped with the wearable hard alloy that built-up welding forms.
The port of described valve flowing channel is necking down port.
Between described Stem Mut and handwheel, be provided with driving key and be in transmission connection, described valve rod upper end exposed junction is provided with nameplate and locking nut.
Between described valve rod and valve gap, be provided with Packing seat and filler, this Packing seat and filler are sealed by the Gland that is arranged on valve gap end face.
Between described Gland and valve gap, be provided with and form interconnected swing bolt, attaching nut, bearing pin and cotter pin.
Between described valve rod and Stem Mut, being provided with trapezoidal motion thread is threaded.
Described flashboard upper end is provided with the T-shape slot being connected with described valve rod lower end.
Compared with prior art, the beneficial effects of the utility model are: support has additional lubricating cup outward and carries out oil injecting lubricating, effectively reduces the frictional force between Stem Mut and support, has reduced unlatching moment, increases the service life; The suitable wearable hard alloy of difference built-up welding between flashboard and sealing surface of seat, effectively reduces wearing and tearing between the two, strengthens sealing reliability; Valve flowing channel port is adopted to undergauge port, and suitably thickening, structural design is more reasonable, can effectively reduce spillage of material and cost of production is low, energy-conserving and environment-protective, the demand of being more close to the users.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the A place enlarged diagram of Fig. 1.
Embodiment
To elaborate again to the utility model embodiment by above-mentioned accompanying drawing below.
As shown in Figure 1 and Figure 2,1. sealing surface of seat, 2. valve flowing channel, 3. valve body, 4. flashboard, 5. valve rod, 6. pad, 7. stud bolt, 8. valve gap, 9. Packing seat, 10. bearing pin, 11. Glands, 12. swing bolts, 13. lubricating cups, 14. Stem Muts, 15. driving keys, 16. nameplates, 17. locking nuts, 18. handwheels, 19. supports, 20. fillers, 21. cotter pins, 22. wearable hard alloys.
Water system cast steel gate valve, as shown in Figure 1, it is a kind of conventional water supply line valve, is to be mainly made up of valve body 3, flashboard 4, valve rod 5, valve gap 8, Gland 11, handwheel 18, support 19, Stem Mut 14 and locking nut 17 etc.
Described valve body 3 adopts straight-through valve body, be provided with the valve flowing channel 2 that level connects, and the port of valve flowing channel is made as necking down port in this valve body, and the runner internal diameter of its port part is consistent with inside nominal diameter, and the minimum diameter in valve flowing channel 2 is inside nominal diameter 90%.In order to meet the requirement of pipe-line system to additional load, determined by design calculation, can suitably increase runner wall thickness, can bear with GB/T12232 in the pipe-line system load of PN16 same specification nodular cast iron gate valve, and exceed 5% left and right.
In described valve flowing channel 2, be provided with sealing surface of seat 1, also be provided with the flashboard 4 that extruding coordinates and form sealing, can be used for cutting off described sealing surface of seat 1, between flashboard 4 and sealing surface of seat 1, be respectively equipped with wearable hard alloy 22 as shown in Figure 2, that built-up welding forms, generally at flashboard sealing surface weld deposit D507Mo, sealing surface of seat 1 built-up welding D577, the two is hard soft suitable, facts have proved wear-resistant, longer service life.
Described valve body 3 tops are provided with the valve gap 8 that stud bolt 7 is connected with nut, be provided with pad 6 and be tightly connected between this valve gap and valve body, on valve gap 8 tops, support 19 are also installed.Described valve gap 8 and the valve rod 5 that vertical valve flowing channel 2 is installed in support 19, this valve rod can be done elevating movement, valve rod 5 lower ends are fitted in the set T-shape slot in flashboard 4 upper ends, thereby make to form connection between the two, therefore the elevating movement of valve rod 5 can drive flashboard 4 also to do elevating movement, and then open and close sealing surface of seat 1; Valve rod 5 upper ends stretch out valve gap 8 and support 19 exposes.
Between described valve rod 5 and valve gap 8, be provided with Packing seat 9 and filler 20 as dynamic seal, this Packing seat and filler are sealed by the Gland 11 that is arranged on valve gap 8 end faces; Linkage structure between described Gland and valve gap 8 is to extend earrings at valve gap end face, between the earrings of Gland 11 and valve gap 8, be provided with swing bolt 12, attaching nut and bearing pin 10, end part of pin shaft fixes to prevent to connect with cotter pin 21 again and gets loose.
Between described valve rod 5 and support 19, be provided with trapezoidal motion thread and make the Stem Mut 14 being threaded, this Stem Mut upper end is stretched out support 19 and is provided with the handwheel 18 that suit connects, between Stem Mut 14 and handwheel 18, driving key 15 is set to be in transmission connection, the exposed junction of valve rod 5 upper ends is provided with locking nut 17 pressing handwheels 18 that nameplate 16 and screw thread screw, to be further connected and fixed.
Described support 19 outer surfaces are provided with the lubricating cup 13 being threaded, and this lubricating cup can directly will carry out oil injecting lubricating between Stem Mut 14 and support 19, to reduce frictional force between the two, prevents from occurring the stuck phenomenon of moving between the two.
The utility model is rotated and is driven Stem Muts 14 by handwheel 18, and then the rotation of Stem Mut is converted into the elevating movement of valve rod 5, finally drive flashboard 4 liftings and and between sealing surface of seat 1, realize and opening and closing.
The above is only preferred embodiments of the present utility model, and the equivalence of doing according to structure, feature and principle described in the utility model patent claim therefore all changes or modifies, and is included in the utility model patent claim.

Claims (8)

1. a water system cast steel gate valve, comprises valve body (3), is arranged on valve flowing channel (2) in valve body, is arranged on sealing surface of seat (1) in valve flowing channel and for cutting off the flashboard (4) of described sealing surface of seat; Described valve body (3) top is provided with the valve gap (8) being tightly connected, and this valve gap top is provided with support (19); The valve rod (5) of doing elevating movement is installed in described valve gap (8) and support (19), and this valve rod lower end is connected with flashboard (4), valve gap is stretched out in upper end (8) and support (19) exposes; Between described valve rod (5) and support (19), be provided with the Stem Mut (14) being threaded, this Stem Mut is provided with the handwheel (18) that suit connects outward, it is characterized in that the outer lubricating cup (13), the frictional force between this lubricating cup oil injecting lubricating Stem Mut (14) and support (19) of being provided with of described support (19).
2. water system cast steel gate valve according to claim 1, is characterized in that being respectively equipped with the wearable hard alloy (22) that built-up welding forms between described flashboard (4) and sealing surface of seat (1).
3. water system cast steel gate valve according to claim 1 and 2, the port that it is characterized in that described valve flowing channel (2) is necking down port.
4. water system cast steel gate valve according to claim 1, it is characterized in that between described Stem Mut (14) and handwheel (18), being provided with driving key (15) is in transmission connection, described valve rod (5) upper end exposed junction is provided with nameplate (16) and locking nut (17).
5. water system cast steel gate valve according to claim 1, it is characterized in that being provided with Packing seat (9) and filler (20) between described valve rod (5) and valve gap (8), this Packing seat and filler are sealed by the Gland (11) that is arranged on valve gap (8) end face.
6. water system cast steel gate valve according to claim 5, is characterized in that being provided with and forming interconnected swing bolt (12), attaching nut, bearing pin (10) and cotter pin (21) between described Gland (11) and valve gap (8).
7. water system cast steel gate valve according to claim 1, is characterized in that between described valve rod (5) and Stem Mut (14), being provided with trapezoidal motion thread is threaded.
8. water system cast steel gate valve according to claim 1, is characterized in that described flashboard (4) upper end is provided with the T-shape slot being connected with described valve rod (5) lower end.
CN201320758551.5U 2013-11-27 2013-11-27 Cast steel gate valve of water supply system Expired - Lifetime CN203604691U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320758551.5U CN203604691U (en) 2013-11-27 2013-11-27 Cast steel gate valve of water supply system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320758551.5U CN203604691U (en) 2013-11-27 2013-11-27 Cast steel gate valve of water supply system

Publications (1)

Publication Number Publication Date
CN203604691U true CN203604691U (en) 2014-05-21

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Family Applications (1)

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CN201320758551.5U Expired - Lifetime CN203604691U (en) 2013-11-27 2013-11-27 Cast steel gate valve of water supply system

Country Status (1)

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CN (1) CN203604691U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105864445A (en) * 2016-04-29 2016-08-17 天津市中核科技实业有限公司 Porous plate-type adjustment valve
CN111412299A (en) * 2020-04-03 2020-07-14 阳泉阀门股份有限公司 Low-pressure large-caliber thin-wall cast steel gate valve and casting method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105864445A (en) * 2016-04-29 2016-08-17 天津市中核科技实业有限公司 Porous plate-type adjustment valve
CN111412299A (en) * 2020-04-03 2020-07-14 阳泉阀门股份有限公司 Low-pressure large-caliber thin-wall cast steel gate valve and casting method

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Granted publication date: 20140521