CN202301993U - Valve rod positioning structure for butt clamping of pin-free butterfly valve - Google Patents

Valve rod positioning structure for butt clamping of pin-free butterfly valve Download PDF

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Publication number
CN202301993U
CN202301993U CN2011203977975U CN201120397797U CN202301993U CN 202301993 U CN202301993 U CN 202301993U CN 2011203977975 U CN2011203977975 U CN 2011203977975U CN 201120397797 U CN201120397797 U CN 201120397797U CN 202301993 U CN202301993 U CN 202301993U
Authority
CN
China
Prior art keywords
valve
rotating shaft
positioning
valve rod
pin
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 - Fee Related
Application number
CN2011203977975U
Other languages
Chinese (zh)
Inventor
郑禄坤
陈家胜
宋晓梅
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TIANJIN INTERNATIONAL MACHINERY CO Ltd
Original Assignee
TIANJIN INTERNATIONAL MACHINERY 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
Publication date
Application filed by TIANJIN INTERNATIONAL MACHINERY CO Ltd filed Critical TIANJIN INTERNATIONAL MACHINERY CO Ltd
Priority to CN2011203977975U priority Critical patent/CN202301993U/en
Application granted granted Critical
Publication of CN202301993U publication Critical patent/CN202301993U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a valve rod positioning structure of butt clamping of a pin-free butterfly valve. The valve rod positioning structure comprises a valve body, an upper rotating shaft, a lower rotating shaft and a valve clack, wherein the upper rotating shaft and the lower rotating shaft are mounted on the valve body, and the valve clack is connected with the upper rotating shaft and the lower rotating shaft and is further positioned between the upper rotating shaft and the lower rotating shaft. The valve rod positioning structure is characterized in that the upper rotating shaft is provided with a circumferential positioning groove; a positioning hole is arranged on the valve body, corresponding to the positioning groove; the axial line of the positioning hole passes through and is further perpendicular to that of the upper rotating shaft; a locking screw for axially positioning the upper rotating shaft is arranged in the positioning hole; a countersunk hole is arranged at the lower part of the valve body; a shaft head of the lower rotating shaft is provided with a circular bead matched with the countersunk hole of the valve body; and an oil plug for axially limiting the lower rotating shaft is mounted at the lower part of the valve body. The valve rod positioning structure has the advantages that the processing is easy; the requirement on processing precision is low; the disassembly is convenient; the rejection rate of the valve body can be decreased greatly; and the economic benefit is improved.

Description

A kind of valve rod position structure that folder is not had the pin butterfly valve
Technical field
The utility model belongs to the butterfly valve technical field, particularly relates to a kind of small-bore valve rod position structure that folder is not had the pin butterfly valve.
Background technique
Butterfly valve is meant that closure member is a disk; Rotate a kind of valve that reaches open and close around valve shaft; Main rising cut off and throttling usefulness on pipeline, mainly is applicable in the engineering systems such as producer, coal gas, rock gas, LPG, town gas, cold and hot air, chemical industry smelting and generation environment-friendly.The structure of butterfly valve mainly comprises: valve body, flap and be installed in the rotating shaft on the valve body, and rotating shaft is divided into rotating shaft and lower rotary shaft, and last rotating shaft all is connected with flap with lower rotary shaft, supports flap on valve body, to rotate folding with this.In the conventional construction; The position structure of butterfly valve rotating shaft such as Fig. 3: the groove 7 that in rotating shaft, is processed with circumferential setting; The position of respective grooves 7 is provided with pin-and-hole 8 on valve body 1; The axis of pin-and-hole 8 runs through groove 7, is provided with the straight pin 9 that countershaft carries out axial limiting in the pin-and-hole 8, and the axis of straight pin 9 is A to the distance at rotating shaft center.In the butterfly valve course of working, higher to the requirement on machining accuracy of above-mentioned A, if A's is undersized, then can make straight pin and rotating shaft friction strengthen, cause rotating shaft to rotate difficulty, the jam phenomenon appears in butterfly valve easily; If A's is oversize, straight pin can break away from the groove of rotating shaft, causes the spacing inefficacy of rotating shaft, and valve body can't continue to use.
Summary of the invention
The utility model provides for solving the technical problem that exists in the known technology that a kind of easy processing, requirement on machining accuracy are low, convenient disassembly, can reduce the valve body reject rate greatly, thus increase economic efficiency folder is not had the valve rod position structure of pin butterfly valve.
The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is: a kind of valve rod position structure that folder is not had the pin butterfly valve; Comprise valve body, be installed in last rotating shaft and lower rotary shaft on the valve body, with last rotating shaft with lower rotary shaft is connected and flap between last rotating shaft and lower rotary shaft; It is characterized in that: said upward rotating shaft is provided with circumferential locating slot; Corresponding locating slot on the said valve body be provided with axis through and vertical on the positioning hole of shaft axis; Be provided with the lock screw of last rotating shaft being carried out axially locating in the positioning hole; The bottom of said valve body is provided with counterbore, and the spindle nose of said lower rotary shaft is provided with the shoulder that cooperates with the counterbore of valve body, and the plug cock that lower rotary shaft is carried out axial limiting is installed in the bottom of said valve body.
The utility model can also adopt following technological scheme:
Said lock screw is interior hexagonal socket cap lock screw.
Be provided with two interior hexagonal socket cap lock screw in the said positioning hole.
Advantage and the good effect that the utlity model has are: because the utility model adopts as above technological scheme; The last rotating shaft that promptly is installed in valve body top is provided with circumferential locating slot; Corresponding locating slot on the valve body be provided with axis pass through on the positioning hole at rotating shaft center; Last rotating shaft is carried out axial limiting through anterior the cooperation with locating slot of lock screw that is arranged in the positioning hole, compares conventional art, and the requirement on machining accuracy of this structure reduces greatly; Thereby significantly reduce the reject rate that valve body is produced, increase economic efficiency.Lower rotary shaft is installed in valve body lower portion through shoulder and counterbore cooperation, and through the plug cock axial limiting, simple in structure, easy accessibility.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the A-A view of Fig. 1;
Fig. 3 is the prior art constructions schematic representation.
Among the figure: 1, valve body; 1-1, positioning hole; 2, flap; 3, go up rotating shaft; 3-1, circumferential locating slot; 4, lower rotary shaft; 5, lock screw; 6, plug cock; 7, groove; 8, pin-and-hole; 9, straight pin.
Embodiment
For further understanding summary of the invention, characteristics and the effect of the utility model, the following examples of giving an example now, and conjunction with figs. specifies as follows:
See also Fig. 1 and Fig. 2, folder is not had the valve rod position structure of selling butterfly valve, comprise valve body 1, flap 2 and rotating shaft; Rotating shaft is divided into rotating shaft 3 and lower rotary shaft 4; Last rotating shaft 3 is installed in the top of valve body 1, and lower rotary shaft 4 is installed in the bottom of valve body 1, and flap 2 is connected with lower rotary shaft 4 with last rotating shaft 3; And above rotating shaft 3 is an axle with lower rotary shaft 4, is implemented on the valve body 1 and rotates folding.
Above-mentioned upward rotating shaft 3 is sleeved on the top of valve body 1; Be processed with circumferential locating slot 3-1 in the last rotating shaft 3, the position of corresponding locating slot is provided with positioning hole 1-1 on the valve body 1, the axis of positioning hole 1-1 through and vertically go up the axis of rotating shaft 3; Be provided with lock screw 5 in the positioning hole 1-1; Lock screw 5 and positioning hole 1-1 screw-thread fit stretch into the length among the locating slot 3-1 of rotating shaft 3 through the front portion of threaded adjusting lock screw 5, with this axially locating is carried out in last rotating shaft 3.Compare the middle part that utilizes straight pin in the existing technology and cooperate spacingly with locating slot, the requirement on machining accuracy of valve body positioning hole is reduced greatly, thereby reduced the reject rate that valve body is produced, increase economic efficiency.
The bottom of valve body 1 is provided with counterbore, and lower rotary shaft 4 is provided with the shoulder 4-1 that cooperates with counterbore, and lower rotary shaft 4 is installed in the bottom of valve body 1; Be provided with the plug cock 6 that is installed in through screw thread on the valve body 1 in the outside of lower rotary shaft 4; 6 pairs of lower rotary shafts of plug cock 4 carry out axial limiting, and are simple in structure, easy accessibility.
Above-mentioned lock screw is interior hexagonal socket cap lock screw, for last rotating shaft is reliably located, two interior hexagonal socket cap lock screw is installed in positioning hole.

Claims (3)

1. valve rod position structure that folder is not had the pin butterfly valve; Comprise valve body, be installed in last rotating shaft and lower rotary shaft on the valve body, with last rotating shaft with lower rotary shaft is connected and flap between last rotating shaft and lower rotary shaft; It is characterized in that: said upward rotating shaft is provided with circumferential locating slot; Corresponding locating slot on the said valve body be provided with axis through and vertical on the positioning hole of shaft axis, be provided with the lock screw of last rotating shaft being carried out axially locating in the positioning hole, the bottom of said valve body is provided with counterbore; The spindle nose of said lower rotary shaft is provided with the shoulder that cooperates with the counterbore of valve body, and the plug cock that lower rotary shaft is carried out axial limiting is installed in the bottom of said valve body.
2. according to claim 1 do not have the valve rod position structure of selling butterfly valve to folder, and it is characterized in that: said lock screw is interior hexagonal socket cap lock screw.
3. according to claim 1 and 2 do not have the valve rod position structure of selling butterfly valve to folder, it is characterized in that: be provided with two interior hexagonal socket cap lock screw in the said positioning hole.
CN2011203977975U 2011-10-18 2011-10-18 Valve rod positioning structure for butt clamping of pin-free butterfly valve Expired - Fee Related CN202301993U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011203977975U CN202301993U (en) 2011-10-18 2011-10-18 Valve rod positioning structure for butt clamping of pin-free butterfly valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011203977975U CN202301993U (en) 2011-10-18 2011-10-18 Valve rod positioning structure for butt clamping of pin-free butterfly valve

Publications (1)

Publication Number Publication Date
CN202301993U true CN202301993U (en) 2012-07-04

Family

ID=46370891

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011203977975U Expired - Fee Related CN202301993U (en) 2011-10-18 2011-10-18 Valve rod positioning structure for butt clamping of pin-free butterfly valve

Country Status (1)

Country Link
CN (1) CN202301993U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103953740A (en) * 2014-05-16 2014-07-30 宁波华成阀门有限公司 Soft sealing butterfly valve
CN104235398A (en) * 2014-09-28 2014-12-24 温州赛尔电子科技有限公司 Throttling-governing butterfly valve
CN110529611A (en) * 2019-08-30 2019-12-03 天津祥嘉流体控制系统有限公司 A kind of High Pressure Difference butterfly valve structure

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103953740A (en) * 2014-05-16 2014-07-30 宁波华成阀门有限公司 Soft sealing butterfly valve
CN104235398A (en) * 2014-09-28 2014-12-24 温州赛尔电子科技有限公司 Throttling-governing butterfly valve
CN104235398B (en) * 2014-09-28 2016-12-07 上海沪工阀门厂(集团)有限公司 Flow restriction control butterfly valve
CN110529611A (en) * 2019-08-30 2019-12-03 天津祥嘉流体控制系统有限公司 A kind of High Pressure Difference butterfly valve structure

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120704

Termination date: 20141018