CN203131081U

CN203131081U - High-tightness flat gate valve

Info

Publication number: CN203131081U
Application number: CN 201320099991
Authority: CN
Inventors: 顾祝明
Original assignee: JIANGSU TIANTAI POWER STATION VALVE CO Ltd
Current assignee: Jiangsu Tiantai Valve Co., Ltd.
Priority date: 2013-02-22
Filing date: 2013-02-22
Publication date: 2013-08-14
Anticipated expiration: 2023-02-22

Abstract

Disclosed is a high-tightness flat gate valve. A guide plate is mounted in a valve body, a valve seat is positioned in the valve body, a wavy spring is positioned between the valve body and the valve seat, a lower sealing ring is mounted in the valve body, a valve stem penetrates through a support, a valve cover is mounted in the valve body, a gate plate is mounted on the inner upper portion of the valve body and connected with the lower end of the valve stem, the valve cover is connected with the valve body through a stud and a nut, a middle ring gasket is mounted between the valve cover and the valve body, a grease injection valve is mounted on one side of the valve cover, the upper portion of the valve cover is fixedly connected with the support through a set screw, a packing gasket and packing are mounted in a packing chamber in a cover body on the upper portion of the valve cover, a bearing is mounted in the support above a packing gland, an oil nozzle is mounted on one side of the support, a valve stem nut in the support is sleeved on the valve stem, an upper sealing ring is positioned on the upper portion of the support, a hand wheel is mounted at the upper end of the valve stem, a pin key is mounted between the valve stem and the hand wheel, the structure is simplified while tightness is improved, and open-close moment in use can be decreased. Therefore, the high-tightness flat gate valve has the advantages of simple structure, fine tightness, low production cost and the like.

Description

The high leak tightness plate valve

Technical field

The utility model belongs to technical field of valve manufacturing, particularly relates to a kind of high leak tightness plate valve that is applied in the pipeline system.

Background technique

Plate valve is a kind of valve commonly used, plate valve generally includes valve body, flashboard, valve rod, flashboard is located on the inner chamber runner of valve body, valve rod is arranged on the valve body, flashboard in the lower end of valve rod and the valve body is affixed, the upper end of valve rod is connected with actuators such as handwheel, the user makes the upper and lower straight line lifting of valve rod by rotating actuators such as handwheel, thereby drive the flashboard upper and lower straight line lifting affixed with valve rod, the runner through hole that is connected with the body cavity runner on the flashboard is opened or closed, thereby realize opening and closing of valve.At present, existing plate valve, flashboard in it is an integrated type flat board, such structure is in actual application, the oscilaltion moving resistance of flashboard is bigger, cause the rotation of actuators such as handwheel not smooth, but also cause the seal valve seat quick abrasion between flashboard and the valve body easily, shorten working life.In existing technology, valve in the production mainly is for pipeline system control media pressure, flow and the flow direction, it in use needs regular opening and closing, sealability will descend in use for some time, particularly because opening and closing repeatedly, make the sealing system of valve produce wearing and tearing, valve will not be in sealing state this moment, thereby cause scrapping of product, and the valve of this sealing configuration is higher to processing request, and valve is a kind of engineering goods that are widely used, production and processing meets the valve that sealability requires, need to adopt expensive day by day non-ferrous metal, as brazen valve body, valve seat, valve rod, bonnet, the spool ball, fill bonnet, purple adapter made of copper etc.; Make the raw material serious waste, these factors have all caused the manufacture cost of ball valve too high, and conventional gate valve is because fluid is cylindrical bore into and out of the hole, corresponding flashboard and body cavity size are big, material expends many and use in required moment also bigger; Owing between valve gap and Gland, establish a filler microcephaly independently, in order to axial restraint valve rod and filling stuffing box packing, both there had been complex structure, its sealing is relatively poor again, therefore, above-mentioned gate valve exists that structure and processing technology are complicated, volume is big, consumptive material is many, sealing is relatively poor and the more high disadvantage of cost of production.

Summary of the invention

The purpose of this utility model is the defective that exists at background technique, improves a kind of high leak tightness plate valve of design, simplifies structure and processing technology to reach, and reduces consumptive material and valve weight and cost of production, improves sealing, reduces purposes such as valve volume.

Realize that concrete scheme of the present utility model is:

A kind of high leak tightness plate valve, comprise valve body, guide plate, valve seat, wavy spring, lower seal, flashboard, valve rod, grease pouring valve, valve gap, Packing seat, filler, Cock screw, Gland, bearing, oil nozzle, Stem Mut, last seal ring, handwheel, pin key, dust-proof cover, guard shield, support, double-screw bolt, nut, middle ring pad, it is characterized in that in the described valve body guide plate being housed, valve seat is positioned at valve body, wavy spring is between valve body and valve seat, lower seal is installed in the valve body, valve rod passes support, valve gap is installed in the valve body, flashboard is installed in the valve body internal upper part, be connected with the valve rod lower end, valve gap passes through, double-screw bolt, nut is connected with valve body, ring pad in being equipped with between valve gap and the valve body, grease pouring valve is installed in a side of valve gap, fixedly connected by Cock screw with support in the top of valve gap, be provided with filler chamber in the lid on valve gap top, Packing seat is housed in it, filler, compress by Gland, in the support on the Gland, bearing is housed, oil nozzle is installed in a side of support, Stem Mut in the support is sleeved on the valve rod, last seal ring is positioned at the top of support, handwheel is contained in the upper end of valve rod, pin key is contained between valve rod and the handwheel, dust-proof cover is sleeved on handwheel top, and guard shield is positioned at dust-proof cover top.

Usefulness of the present utility model is:

Because filler chamber directly is located at valve gap top, Packing seat, filler are housed in it, and compress by Gland, in the support on the Gland, bearing is housed, oil nozzle is installed in a side of support, grease pouring valve is installed in a side of valve gap, and last seal ring is positioned at the top of support, and lower seal is installed in the valve body, simplifies the structure and has improved sealing; Flashboard is installed in the valve body internal upper part, is connected with the valve rod lower end, and the consumptive material of same specification valve is reduced, and the keying moment during it uses also can reduce.Therefore, the utlity model has simple in structure, reliable, good airproof performance, characteristics such as volume is little, in light weight, and cost of production is lower.

Description of drawings

Fig. 1 is the utility model structural representation.

In Fig. 1: ring pad among 1-valve body, 2-guide plate, 3-valve seat, 4-wavy spring, 5-lower seal, 6-flashboard, 7-valve rod, 8-grease pouring valve, 9-valve gap, 10-Packing seat, 11-filler, 12-Cock screw, 13-Gland, 14-bearing, 15-oil nozzle, 16-Stem Mut, the last seal ring of 17-, 18-handwheel, 19-pin key, 20-dust-proof cover, 21-guard shield, 22-support, 23-double-screw bolt, 24-nut, the 25-.

Embodiment

Further specify below in conjunction with Figure of description.

A kind of high leak tightness plate valve, comprise valve body 1, guide plate 2, valve seat 3, wavy spring 4, lower seal 5, flashboard 6, valve rod 7, grease pouring valve 8, valve gap 9, Packing seat 10, filler 11, Cock screw 12, Gland 13, bearing 14, oil nozzle 15, Stem Mut 16, last seal ring 17, handwheel 18, pin key 19, dust-proof cover 20, guard shield 21, support 22, double-screw bolt 23, nut 24, middle ring pad 25, it is characterized in that in the described valve body 1 guide plate 2 being housed, valve seat 3 is positioned at valve body, wavy spring 4 is between valve body 1 and valve seat 3, lower seal 5 is installed in the valve body 1, valve rod 7 passes support 22, valve gap 9 is installed in the valve body 1, flashboard 6 is installed in valve body 1 internal upper part, be connected with valve rod 7 lower ends, valve gap 9 is by double-screw bolt 23, nut 24 is connected with valve body 1, ring pad 25 in being equipped with between valve gap 9 and the valve body 1, grease pouring valve 8 is installed in a side of valve gap 9, fixedly connected by Cock screw 12 with support 22 in the top of valve gap 9, be provided with filler chamber in the lid on valve gap 9 tops, Packing seat 10 is housed in it, filler 11, compress by Gland 13, in the support 22 on the Gland 13, bearing 14 is housed, oil nozzle 15 is installed in a side of support 22, Stem Mut 16 in the support 22 is sleeved on the valve rod 7, last seal ring 17 is positioned at the top of support 22, handwheel 18 is contained in the upper end of valve rod 7, pin key 19 is contained between valve rod 7 and the handwheel 18, dust-proof cover 20 is sleeved on handwheel 18 tops, and guard shield 21 is positioned at the top of dust-proof cover 20.

That describes in the utility model specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.

Claims

1. high leak tightness plate valve, comprise valve body, guide plate, valve seat, wavy spring, lower seal, flashboard, valve rod, grease pouring valve, valve gap, Packing seat, filler, Cock screw, Gland, bearing, oil nozzle, Stem Mut, last seal ring, handwheel, pin key, dust-proof cover, guard shield, support, double-screw bolt, nut, middle ring pad, it is characterized in that in the described valve body guide plate being housed, valve seat is positioned at valve body, wavy spring is between valve body and valve seat, lower seal is installed in the valve body, valve rod passes support, valve gap is installed in the valve body, flashboard is installed in the valve body internal upper part, be connected with the valve rod lower end, valve gap passes through, double-screw bolt, nut is connected with valve body, ring pad in being equipped with between valve gap and the valve body, grease pouring valve is installed in a side of valve gap, fixedly connected by Cock screw with support in the top of valve gap, in the lid on valve gap top Packing seat is housed, filler, compress by Gland, in the support on the Gland, bearing is housed, oil nozzle is installed in a side of support, Stem Mut in the support is sleeved on the valve rod, last seal ring is positioned at the top of support, handwheel is contained in the upper end of valve rod, pin key is contained between valve rod and the handwheel, dust-proof cover is sleeved on handwheel top, and guard shield is positioned at dust-proof cover top.