CN202901317U - Small-bore plate bar integrated center line-type butterfly valve - Google Patents
Small-bore plate bar integrated center line-type butterfly valve Download PDFInfo
- Publication number
- CN202901317U CN202901317U CN 201220471160 CN201220471160U CN202901317U CN 202901317 U CN202901317 U CN 202901317U CN 201220471160 CN201220471160 CN 201220471160 CN 201220471160 U CN201220471160 U CN 201220471160U CN 202901317 U CN202901317 U CN 202901317U
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- valve
- valve body
- plate
- plate stem
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Abstract
The utility model relates to a small-bore plate bar integrated center line-type butterfly valve which comprises a plate bar sleeve. The plate bar sleeve is inserted into an upper end hole and a lower end hole of a valve base. A shaft sleeve is pressed into a shaft sleeve hole of an upper valve body. The upper end of the plate bar sleeve is inserted into a center hole of the upper valve body. A dovetail base of the valve base is matched with a dovetail groove of the upper valve body. The center hole of a lower valve body is matched with the lower end of the plate bar sleeve in a shaft mode. A bolt and a nut at two sides fixedly connect the upper valve body with the lower valve body. The small-bore plate bar integrated center line-type butterfly valve has the advantages that the valve bodies are designed to be of split types, stainless steel precision casting forming is adopted, and therefore machining is not needed and machining cost is lowered. Moreover, a valve plate and a valve bar are integrally formed in a precision casting mode, and therefore only the sealing face of the valve plate needs to be polished, other machining is not needed, and machining cost is lowered. In addition, the valve plate and the valve bar are integrated, no flange is arranged in the center of the valve plate, a section area of the valve plate is only 10% of that of the valve bore, a flow resistance coefficient is lowered, valve flow is increased, and maintenance is convenient and maintenance cost is lowered due to the fact that the valve base is detachable.
Description
Technical field
The utility model relates to a kind of centre-pivoted butterfly valve, relates in particular to the structure of this centre-pivoted butterfly valve.
Background technique
Butterfly valve is mainly used in the fields such as town water supply, petrochemical industry, desalination of sea water, medical apparatus, be divided into center line wafer type butterfly valve, center line flange-type butterfly valve, single eccentric-butterfly-valve, double eccentric butterfly valve and three eccentric butterfly valve, the applied field of different butterfly valve structures is also different.
Such as Fig. 1, Figure 1A, shown in Figure 2: the small-bore centre-pivoted butterfly valve of prior art mainly by: lower valve rod 1, valve plate 2, upper valve rod 3, valve seat 4, valve body 5 and axle sleeve 6 parts form.
Small-bore centre-pivoted butterfly valve valve plate 2 is individual components with upper valve rod 3 and lower valve rod 1, needs to process axis hole at valve plate 2 upper and lower end, and then upper valve rod 3 and lower valve rod 1 penetrate in the axis hole of valve plate 2, form to connect.Such linkage structure processing cost is high, and the sectional area of valve plate 2 accounts for more than 50% of valve aperture, causes the large flow coefficient of flow resistance coefficient low, if flow coefficient is low to certain degree, valve will lose the meaning of use; Valve body 5 needs machining, and then valve seat 4 whole sulfurations are on valve body, and processing cost improves, and can not change after the valve seat damage.
Summary of the invention
The utility model technical issues that need to address have provided a kind of small-bore plate stem integral type centre-pivoted butterfly valve, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: the plate stem cover; Described plate stem cover inserts upper end hole and the lower stomidium of valve seat; Axle sleeve is pressed in the axle sleeve hole of upper valve body; Insert in the mesopore of upper valve body the plate stem set upper side; The dovetail mount of valve seat cooperates with the dovetail groove of upper valve body; Lower valve body mesopore cooperates with plate stem cover lower end axle; The bolts and nuts of both sides are connected and fixed upper valve body and lower valve body.
Compared with prior art, the beneficial effects of the utility model are: the valve body split-type design, adopt the precision stainless steel casting, and need not processing, cut down finished cost; Valve plate and valve rod adopt one precision casting moulding, only sealing surface of valve plate need be polished to get final product, and need not other processing, cut down finished cost; Valve plate and valve rod integrated, valve plate center be without flange, sectional area only account for valve aperture 10% once, reduce flow resistance coefficient, improve valve flow; Detachable valve seat, easy to maintenance, reduce maintenance cost.
Description of drawings
Fig. 1 is the small-bore middle butterfly valve structure schematic diagram plan view of prior art.
Figure 1A be Fig. 1 view along AA line cross section view.
Fig. 2 is the exploded perspective view of Fig. 1.
Fig. 3 is the utility model structural representation plan view.
Fig. 3 A be Fig. 3 view along BB line cross section view.
Fig. 4 is the utility model structure exploded perspective view.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
By Fig. 3, Fig. 3 A, Fig. 4 as seen: the utility model comprises: plate stem cover 9; Described plate stem cover 9 inserts upper end hole and the lower stomidium of valve seat 8; Axle sleeve 11 is pressed in the axle sleeve hole of upper valve body 10; Plate stem overlaps 9 upper ends and inserts in the mesopore of upper valve body 10; The dovetail mount of valve seat 8 cooperates with the dovetail groove of upper valve body 10; Lower valve body 7 mesopores overlap 9 lower end axles with plate stem and cooperate; Bolt 13 and the nut 12 of both sides are connected and fixed upper valve body 10 and lower valve body 7.
Described upper valve body 10 and lower valve body 7 adopt the precision stainless steel casting.
Described plate stem cover 9 adopts glossing, plate stem cover 9 and valve seat 8 interference fit with the surface of contact of valve seat 8.
Upper valve body of the present utility model and lower valve body adopt split type valve body design, and valve body adopts the precision stainless steel casting, need not any processing, and the size error that casts out is in 0.25 millimeter, and soft valve seat can be filled casting and is created in size error; Valve plate and valve rod are integral type, adopt simultaneously the precision stainless steel casting, only need can need not other processing to the sealing surface polishing, and the valve plate center is without flange, and flow resistance coefficient is low, improves valve flow; Detachable valve seat, the valve body separation can be taken out valve seat, field maintenance and easy to assembly up and down.
The utility model assembly technology is as follows: the upper end hole that the long end of plate stem cover 9 is inserted valve seat 8, then valve seat 8 is elongated the lower stomidium that overlaps 9 short ends insertion valve seat 8 to plate stem, form the assembling of valve seat 8 and plate stem cover 9, plate stem cover 9 adopts glossing with the surface of contact of valve seat 8, and with valve seat 8 interference fit, form seal pressure, produce sealing; Axle sleeve 11 is pressed in the axle sleeve hole of upper valve body 10; Plate stem overlaps 9 upper ends and inserts in the mesopore of upper valve body 10, and the dovetail mount of valve seat 8 cooperates with the dovetail groove of upper valve body 10 simultaneously, and valve seat 8 produces wriggling in the time of can preventing valve opening and closing; Lower valve body 7 mesopores overlap 9 lower end axles with plate stem and cooperate; Bolt 13 is connected and fixed upper valve body 10 and lower valve body 7 with nut 12, when needs are changed valve seat 8, only needs nut 12 and bolt 13 dismountings can be separated upper valve body 10 and lower valve body 7, takes out valve seat 8, changes.
Claims (3)
1. a small-bore plate stem integral type centre-pivoted butterfly valve is characterized in that comprising: the plate stem cover; Described plate stem cover inserts upper end hole and the lower stomidium of valve seat; Axle sleeve is pressed in the axle sleeve hole of upper valve body; Insert in the mesopore of upper valve body the plate stem set upper side; The dovetail mount of valve seat cooperates with the dovetail groove of upper valve body; Lower valve body mesopore cooperates with plate stem cover lower end axle; The bolts and nuts of both sides are connected and fixed upper valve body and lower valve body.
2. small-bore plate stem integral type centre-pivoted butterfly valve according to claim 1 is characterized in that: described upper valve body and lower valve body employing precision stainless steel casting.
3. small-bore plate stem integral type centre-pivoted butterfly valve according to claim 1 is characterized in that: the surface of contact employing glossing of described plate stem cover and valve seat, plate stem cover and valve seat interference fit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220471160 CN202901317U (en) | 2012-09-14 | 2012-09-14 | Small-bore plate bar integrated center line-type butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220471160 CN202901317U (en) | 2012-09-14 | 2012-09-14 | Small-bore plate bar integrated center line-type butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202901317U true CN202901317U (en) | 2013-04-24 |
Family
ID=48121988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220471160 Expired - Fee Related CN202901317U (en) | 2012-09-14 | 2012-09-14 | Small-bore plate bar integrated center line-type butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202901317U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017124192A1 (en) * | 2016-01-22 | 2017-07-27 | Oxo Fab Inc. | Knife gate valve |
-
2012
- 2012-09-14 CN CN 201220471160 patent/CN202901317U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017124192A1 (en) * | 2016-01-22 | 2017-07-27 | Oxo Fab Inc. | Knife gate valve |
| CN108884942A (en) * | 2016-01-22 | 2018-11-23 | Oxo Fab 有限公司 | knife gate valve |
| US10323755B2 (en) | 2016-01-22 | 2019-06-18 | Oxo Fab Inc. | Knife gate valve |
| EA037345B1 (en) * | 2016-01-22 | 2021-03-16 | Оксо Фаб Инк. | Knife gate valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20160914 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |