技术领域technical field
本实用新型涉及一种阀轴导向装置，及包含有这种阀轴导向装置的轴流式止回阀。The utility model relates to a valve shaft guiding device and an axial flow check valve including the valve shaft guiding device.
背景技术Background technique
轴流式止回阀具有结构紧凑，流线型流道、低压力密封和低压力开启、关闭无卡阻、密封可靠等特点。目前阀轴的导向结构一般采用， 1、在阀门整流罩尾部直接加工后，过盈配合一衬套，采用焊接的方式与阀体固定。2、在阀门整流罩尾部直接加工后，采用并紧螺母的方式拉紧衬套与阀体配合，点焊防止螺纹松动。这两种方式的缺点在于阀轴和衬套受到逆流介质的直接冲刷，杂物容易进入衬套内损伤衬套及阀轴，衬套损坏后，不易拆卸，维修困难。并且由于杂物的进入容易造成卡阻，造成阀门开关不灵活。The axial flow check valve has the characteristics of compact structure, streamlined flow channel, low pressure sealing, low pressure opening and closing without jamming, and reliable sealing. At present, the guide structure of the valve shaft generally adopts: 1. After the tail of the valve fairing is directly processed, a bushing is interference fit and fixed to the valve body by welding. 2. After the tail of the valve fairing is directly processed, the bushing is tightened to match the valve body by tightening the nut, and spot welding is used to prevent the thread from loosening. The disadvantages of these two methods are that the valve shaft and the bushing are directly washed by the countercurrent medium, and debris can easily enter the bushing and damage the bushing and valve shaft. After the bushing is damaged, it is not easy to disassemble and difficult to maintain. And because the entry of debris is easy to cause jamming, the valve switch is not flexible.
发明内容Contents of the invention
为解决上述问题，本实用新型提供以下方案：In order to solve the above problems, the utility model provides the following solutions:
一种阀轴导向装置,阀轴导向装置由定心套及衬套组成，定心套与衬套均呈中空圆柱状，定心套套于衬套外，衬套内嵌有导向带，定心套外表面设有环槽，环槽内嵌有由卡环及套圈组成的限位面；定心套内径大于定心套前端端口内径；定心套后端端口内径大于定心套内径，且后端端口侧壁开有通透的、位置相对的销孔；衬套内壁开有导向槽，导向槽内嵌有导向带；衬套前端抵于定心套前端端口，衬套后端抵于定心套后端侧壁之间嵌装的挡圈，挡圈侧壁开有位置相对的销孔，挡圈销孔与定心套销孔位置对应，柱销穿过定心套销孔与挡圈销孔进行固定。A valve shaft guiding device. The valve shaft guiding device is composed of a centering sleeve and a bushing. Both the centering sleeve and the bushing are in the shape of a hollow cylinder. The centering sleeve is placed outside the bushing. There is a ring groove on the outer surface of the sleeve, and a limit surface composed of a snap ring and a ferrule is embedded in the ring groove; the inner diameter of the centering sleeve is larger than the inner diameter of the front end port of the centering sleeve; the inner diameter of the rear end port of the centering sleeve is larger than the inner diameter of the centering sleeve. And the side wall of the rear end port is provided with transparent and relatively positioned pin holes; the inner wall of the bush is provided with a guide groove, and a guide belt is embedded in the guide groove; the front end of the bush is against the front end port of the centering sleeve, and the rear end of the bush is against the The retaining ring embedded between the side walls of the rear end of the centering sleeve, the side wall of the retaining ring has pin holes opposite to each other, the pin holes of the retaining ring correspond to the pin holes of the centering sleeve, and the pins pass through the pin holes of the centering sleeve Fasten with the retaining ring pin hole.
进一步的，导向带由PTFE材料制成。Further, the guide belt is made of PTFE material.
一种轴流式止回阀，包括阀体，固定于阀体入口处内的阀座，封盖阀座的阀瓣，及安装于阀体内的导流罩，还包含有上述阀轴导向装置，导流罩内设置环形的固定支座，阀轴导向装置固定于固定支座内，固定后导向装置的限位面与固定支座相抵，限位面与阀瓣之间安装有弹簧；阀轴一端固定于阀瓣表面，另一端穿过阀轴导向装置。An axial flow check valve, comprising a valve body, a valve seat fixed at the inlet of the valve body, a valve disc covering the valve seat, and a deflector installed in the valve body, and also includes the above-mentioned valve shaft guide device , a ring-shaped fixed support is set in the shroud, and the valve shaft guide device is fixed in the fixed support. After fixing, the limit surface of the guide device is against the fixed support, and a spring is installed between the limit surface and the valve disc; One end of the shaft is fixed on the disc surface, and the other end passes through the valve shaft guide.
进一步的，固定支座内表面攻螺纹，所述阀轴导向装置定心套外表面由环槽向定心套后端方向有一段螺纹，所述阀轴导向装置与固定支座通过螺纹螺设固定。Further, the inner surface of the fixed support is tapped, and the outer surface of the centering sleeve of the valve shaft guiding device has a section of thread from the ring groove to the rear end of the centering sleeve. fixed.
进一步的，弹簧一端抵触在阀瓣上，另一端抵触在卡环和套圈组成的限位面上。Further, one end of the spring is in contact with the valve clack, and the other end is in contact with the limiting surface formed by the snap ring and the ferrule.
进一步的，阀瓣上还设置有辅助导向杆，所述导流罩上设置有与辅助导向杆相对的辅助导向孔，辅助导向杆插入辅助导向孔内实现辅助导向及防止阀瓣偏转功能。Further, an auxiliary guide rod is also provided on the valve disc, and an auxiliary guide hole opposite to the auxiliary guide rod is provided on the shroud, and the auxiliary guide rod is inserted into the auxiliary guide hole to realize the auxiliary guide and prevent the deflection of the valve disc.
进一步的，阀瓣截面呈弧形，且其圆心位于阀体出口方向。Further, the cross-section of the disc is arc-shaped, and its center is located in the direction of the outlet of the valve body.
进一步的，阀座与阀体之间设置有O形圈及密封圈进行密封。Further, an O-ring and a sealing ring are arranged between the valve seat and the valve body for sealing.
进一步的，定心套前端口设有扳口。Further, the front port of the centering sleeve is provided with a wrench.
本实用新型的有益效果为：The beneficial effects of the utility model are:
1.阀轴导向装置与轴流式止回阀螺接固定，方便拆卸，便于维修更换。1. The valve shaft guiding device is screwed and fixed with the axial flow check valve, which is convenient for disassembly and maintenance and replacement.
2.阀瓣与阀轴导向装置间设有弹簧，便于回位2. There is a spring between the disc and the guide device of the valve shaft, which is easy to return
3.衬套内设有导向带，摩擦系数低，便于阀轴的往返运动，使阀门开关灵活。3. There is a guide belt in the bushing, which has a low friction coefficient, which facilitates the reciprocating movement of the valve shaft and makes the valve open and close flexibly.
4.辅助导向杆及辅助导向孔的设置使阀门开启时更加稳定，防止阀瓣及阀轴转动。4. The setting of the auxiliary guide rod and the auxiliary guide hole makes the valve more stable when it is opened and prevents the disc and the valve shaft from rotating.
附图说明Description of drawings
图1为阀轴导向装置结构示意图；Fig. 1 is a schematic diagram of the structure of the valve shaft guiding device;
图2为定心套结构示意图；Fig. 2 is a structural schematic diagram of a centering sleeve;
图3为轴流式止回阀结构示意图。Fig. 3 is a structural schematic diagram of an axial flow check valve.
1.定心套；2.衬套；3.导向带；4.挡圈；5.定心套销孔；6.挡圈销孔；7.套圈；8.卡环；9阀瓣；10.导流罩；11.阀轴；12.辅助导向杆；13.辅助导向孔；14固定支座；15.固定支座螺纹；16.弹簧；17.阀体；18.阀座；101.环槽；102.定心套螺纹；103.后端端口；104. 扳口；105.前端端口；106.后端端口。1. Centering sleeve; 2. Bushing; 3. Guide belt; 4. Retaining ring; 5. Centering sleeve pin hole; 6. Retaining ring pin hole; 7. Ferrule; 8. Snap ring; 9 Disc; 10. Guide cover; 11. Valve shaft; 12. Auxiliary guide rod; 13. Auxiliary guide hole; 14 Fixed support; 15. Fixed support thread; 16. Spring; 17. Valve body; 18. Valve seat; 101 .ring groove; 102. centering sleeve thread; 103. rear end port; 104. wrench; 105. front end port; 106. rear end port.
具体实施方式Detailed ways
现结合附图对本实用新型进行详细说明：Now in conjunction with accompanying drawing, the utility model is described in detail:
实施例1：如图1-图3所示，Embodiment 1: As shown in Figure 1-Figure 3,
一种阀轴导向装置,阀轴导向装置由定心套1及衬套2组成，定心套1与衬套2均呈中空圆柱状，定心套1套于衬套2外，定心套1 外表面设有环槽101，环槽101内嵌有由卡环8及套圈7组成的限位面；定心套1内径大于定心套前端端口105内径；定心套后端端口106内径大于定心套1内径，且后端端口106侧壁开有通透的、位置相对的定心套销孔5；定心套1外表面由环槽101向定心套1后端方向有一段定心套螺纹102；定心套1前端面开有扳口104；衬套2内壁开有导向槽，导向槽内嵌有导向带3，导向带3由PTFE材料制成；衬套2前端抵于定心套前端端口105内侧，衬套2后端低于定心套1 后端侧壁之间嵌入挡圈4端面，挡圈4侧壁开有挡圈销孔6，挡圈销孔6与定心套销孔5位置对应，柱销穿过定心套销孔5与挡圈销孔6 进行固定。A valve shaft guiding device. The valve shaft guiding device is composed of a centering sleeve 1 and a bushing 2. Both the centering sleeve 1 and the bushing 2 are hollow cylindrical. The centering sleeve 1 is set outside the bushing 2. The centering sleeve 1 The outer surface is provided with a ring groove 101, and the ring groove 101 is embedded with a limit surface composed of a snap ring 8 and a ferrule 7; the inner diameter of the centering sleeve 1 is larger than the inner diameter of the front end port 105 of the centering sleeve; the rear end port 106 of the centering sleeve The inner diameter is larger than the inner diameter of the centering sleeve 1, and the side wall of the rear end port 106 has a transparent centering sleeve pin hole 5 opposite in position; A section of centering sleeve thread 102; the front end of centering sleeve 1 has a wrench opening 104; the inner wall of bushing 2 has a guide groove, and a guide belt 3 is embedded in the guide groove, and the guide belt 3 is made of PTFE material; the front end of bushing 2 Resist on the inner side of the front end port 105 of the centering sleeve, the rear end of the bushing 2 is lower than the rear end side wall of the centering sleeve 1, and the end face of the retaining ring 4 is embedded between the side walls of the retaining ring 4, and the retaining ring pin hole 6 is opened on the side wall of the retaining ring 4, and the retaining ring pin hole 6 corresponds to the position of the centering sleeve pin hole 5, and the column pin passes through the centering sleeve pin hole 5 and the retaining ring pin hole 6 for fixing.
一种轴流式止回阀，包括阀体17，安装于阀体17入口内的阀座 18，及封盖阀座18的阀瓣9，还包含有如上所述的阀轴导向装置，导流罩10内设置环形的固定支座14，固定支座14内表面设有固定支座螺纹15，阀轴导向装置与固定支座14通过螺纹螺设固定，固定后导向装置的限位面与固定支座14相抵，限位面与阀瓣9之间安装有弹簧16，弹簧16一端抵触于阀瓣9，另一端抵触与有卡环8和套圈7组成的限位面上；阀瓣9截面呈弧形，且其圆心位于阀轴导向装置所在方向，阀轴11一端固定于阀瓣9凹面，另一端穿过阀轴导向装置。An axial flow check valve, comprising a valve body 17, a valve seat 18 installed in the inlet of the valve body 17, and a valve flap 9 covering the valve seat 18, and also includes the above-mentioned valve shaft guiding device, guiding An annular fixed support 14 is arranged in the flow cover 10, and the inner surface of the fixed support 14 is provided with a fixed support thread 15, and the valve shaft guiding device and the fixed support 14 are fixed by screw threads. The fixed support 14 is offset, and a spring 16 is installed between the limiting surface and the valve disc 9. One end of the spring 16 is in contact with the valve disc 9, and the other end is in contact with the limiting surface composed of the snap ring 8 and the ferrule 7; the valve disc The section 9 is arc-shaped, and its center of circle is located in the direction of the valve shaft guiding device. One end of the valve shaft 11 is fixed on the concave surface of the valve disc 9, and the other end passes through the valve shaft guiding device.
阀瓣9上还设置有辅助导向杆12，导流罩10上设置有与辅助导向杆12相对的辅助导向孔13，辅助导向杆12插入辅助导向孔13内进行辅助导向。An auxiliary guide rod 12 is also arranged on the valve flap 9, and an auxiliary guide hole 13 opposite to the auxiliary guide rod 12 is arranged on the shroud 10, and the auxiliary guide rod 12 is inserted into the auxiliary guide hole 13 for auxiliary guidance.
阀轴导向装置与导流罩10螺设固定，方便拆卸安装，容易清洗及维修；阀轴11始终贯穿阀轴导向装置避免杂物进入该装置，防止杂物对其导向作用的影响，减少维修成本；限位面与阀瓣9间设置弹簧16，实现阀瓣9的自动回位，且辅助导向杆12及辅助导向孔13 的配合帮助阀瓣9的导向，并对阀瓣9进行限位，防止阀瓣9转动；衬套2内设有导向带3，利用其自润滑性良好，摩擦系数低的特点，保证阀轴导向装置与阀轴11间的滑动的灵活性。The valve shaft guiding device and the guide cover 10 are screwed and fixed, which is convenient for disassembly and installation, and easy to clean and maintain; the valve shaft 11 runs through the valve shaft guiding device all the time to prevent debris from entering the device, prevent debris from affecting its guiding effect, and reduce maintenance Cost; a spring 16 is set between the limit surface and the valve disc 9 to realize the automatic return of the valve disc 9, and the cooperation of the auxiliary guide rod 12 and the auxiliary guide hole 13 helps the guide of the valve disc 9 and limits the position of the valve disc 9 , to prevent the valve disc 9 from rotating; the bushing 2 is provided with a guide belt 3, which utilizes its good self-lubricating property and low friction coefficient to ensure the flexibility of sliding between the valve shaft guide device and the valve shaft 11.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721896818.1UCN208010982U (en) | 2017-12-29 | 2017-12-29 | A kind of valve shaft guider and the axial flow type check valve for including this device |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721896818.1UCN208010982U (en) | 2017-12-29 | 2017-12-29 | A kind of valve shaft guider and the axial flow type check valve for including this device |
| Publication Number | Publication Date |
|---|---|
| CN208010982Utrue CN208010982U (en) | 2018-10-26 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721896818.1UExpired - Fee RelatedCN208010982U (en) | 2017-12-29 | 2017-12-29 | A kind of valve shaft guider and the axial flow type check valve for including this device |
| Country | Link |
|---|---|
| CN (1) | CN208010982U (en) |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | Address after:No. 26, Yuchuan Road, high tech Industrial Park, Zigong, Sichuan, 643000 Patentee after:Sichuan Dewei Valve Co.,Ltd. Address before:No. 26, Yuchuan Road, high tech Industrial Park, Zigong, Sichuan, 643000 Patentee before:SICHUAN VOLANT VALVE Co.,Ltd. | |
| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee | Granted publication date:20181026 | |
| CF01 | Termination of patent right due to non-payment of annual fee |