CN215214775U

CN215214775U - Direct drinking water butterfly valve

Info

Publication number: CN215214775U
Application number: CN202121019270.9U
Authority: CN
Inventors: 许炳全; 袁增伟; 姜夕琳; 陈崇顶
Original assignee: CNNC Sufa Technology Industry Co Ltd
Current assignee: CNNC Sufa Technology Industry Co Ltd
Priority date: 2021-05-13
Filing date: 2021-05-13
Publication date: 2021-12-17
Anticipated expiration: 2031-05-13

Abstract

The utility model discloses a straight drinking water butterfly valve, it includes the valve body, the butterfly plate, the seal in extension axle sleeve and butterfly plate hole, extension axle sleeve and valve body hole, the seal of locating pin and locating pin department, the seal of butterfly plate clamping ring and clamping ring department, the seal of screw and screw department, the seal of set screw and set screw department. The utility model discloses a show the effect and be: effectively avoids the influence on water quality due to the pollutant generated by the valve in the using process and meets the requirement of direct drinking water.

Description

Direct drinking water butterfly valve

Technical Field

The utility model belongs to the valve, concretely relates to straight drinking water butterfly valve.

Background

With the improvement of living standard, people have higher and higher requirements on drinking water, and the drinking water tends to be great. The used soft seal butterfly valve of conduit usually, valve body and butterfly plate adopt the nodular cast iron material, and valve body and butterfly plate surface all spray epoxy and protect, nevertheless can produce the pollutant in the valve use, if the valve body sealed face rusts, valve body and valve rod and butterfly plate and the junction of valve rod can slow corrosion etc. the continuous pipeline that gets into of washing away of water is crossed to the rust thing, influences quality of water and can not directly drink.

In order to avoid the pollution of the valve to water in the use process, the requirement of direct drinking water is met, and the utility model discloses a direct drinking water butterfly valve.

SUMMERY OF THE UTILITY MODEL

The utility model provides a direct drinking water butterfly valve. Effectively avoids the influence on water quality caused by the pollutant generated by the valve in the using process.

The utility model discloses a realize like this: the utility model provides a straight drinking water butterfly valve, includes the valve body, the butterfly plate, adds the seal in extension axle sleeve and butterfly plate hole, extension axle sleeve and valve body hole, the seal of locating pin and locating pin department, the seal of butterfly plate clamping ring and clamping ring department, the seal of screw and screw department, the seal of set screw and set screw department.

As the direct drinking water butterfly valve, the inner surface and the outer surface of the valve body casting are sprayed with the epoxy resin, and the sealing surface is sprayed and welded with the stainless steel, the valve body and the sealing surface are prevented from being rusted in the use process of the valve, and the water quality is not influenced.

According to the direct drinking water butterfly valve, the surface of the butterfly plate is sprayed with the epoxy resin, the upper valve rod and the lower valve rod are designed to be arranged from two ends, and the end parts are of the blind hole structures, so that water is prevented from entering from the end parts.

The direct drinking water butterfly valve adopts the lengthened shaft sleeve, and the shaft sleeve directly extends into the butterfly plate; an O-shaped ring is arranged near the orifice of the butterfly plate where the shaft sleeve enters; be equipped with O type circle near axle sleeve and valve body orifice, realize that O type circle and the epoxy layer of butterfly plate form sealed, O type circle and the epoxy layer of valve body form sealed, prevent that water from getting into to prevent butterfly plate and the downthehole portion corrosion of valve body.

As above a straight drinking water butterfly valve, the locating pin chooses for use stainless steel, and at locating pin orifice department chamfer, set up O type circle, realize that O type circle and butterfly plate locating pin orifice department epoxy layer form sealed, prevent that water from getting into, the protection screw thread prevents that the screw thread from rustting and corroding.

According to the direct drinking water butterfly valve, the pressing ring is made of stainless steel, and the O-shaped ring is arranged at the boss matched with the pressing ring and the butterfly plate to form sealing; stainless steel material is selected for use to the screw, and the plane is equipped with the rubber gasket under the screw head, forms sealedly, prevents the entering of water to prevent that the screw hole on the butterfly plate from rustting and corroding.

As above-mentioned a straight drinking water butterfly valve, the set screw chooses for use stainless steel material, twines the raw sticky tape on the screw thread, prevents the entering of water.

The utility model discloses a show the effect and be: the utility model provides a straight drinking water butterfly valve has avoided valve itself to produce the pollutant in the use, produces the pollution to quality of water, has guaranteed to satisfy straight drinking water requirement.

Drawings

Fig. 1 is a schematic view of a direct drinking water butterfly valve.

FIG. 2 is a partial enlarged view of the seal portions of the extension sleeve and the butterfly plate hole and the extension sleeve and the valve body hole.

FIG. 3 is an enlarged view of the locating pin and the seal at the locating pin.

FIG. 4 is a partial enlarged view of a pressing ring of the butterfly plate and a seal at the pressing ring and a seal at a screw and a screw.

Fig. 5 is a close-up view of the set screw and the seal at the set screw.

In the figure: 1. the butterfly valve comprises a valve body, 2, a butterfly plate, 3, an elongated shaft sleeve, 4, an O-shaped ring, 5, an O-shaped ring, 6, an O-shaped ring, 7, a positioning pin, 8, a pressing ring, 9, an O-shaped ring, 10, a screw, 11, a valve body sealing surface, 12, a valve body epoxy layer, 13, a rubber gasket, 14, a set screw, 15, a raw rubber tape, 21, a butterfly plate epoxy layer, 22 and a butterfly plate end blind hole structure.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

The utility model relates to a direct drinking water butterfly valve. As shown in figures 1-5, a direct drinking water butterfly valve comprises a valve body 1, a butterfly plate 2, a lengthened shaft sleeve 3, sealing of the lengthened shaft sleeve 3 and a butterfly plate hole, sealing of the lengthened shaft sleeve 3 and a valve body hole, sealing of a positioning pin 7 and a positioning pin, sealing of a butterfly plate pressing ring 8 and a pressing ring, sealing of a screw 10 and a screw, and sealing of a top tightening screw 14 and a top tightening screw.

As shown in figures 1 and 2, the direct drinking water butterfly valve has the advantages that epoxy resin 12 is sprayed on the inner surface and the outer surface of the valve body 1, and 316L stainless steel is sprayed and welded on the sealing surface 11 of the valve body, so that the valve body and the sealing surface are prevented from being rusted in the using process, and the water quality is not influenced.

As shown in figures 1 and 2, the surface of the butterfly plate 2 is sprayed with epoxy resin 21, the upper valve rod and the lower valve rod are designed to be installed from two ends, and the end parts of the butterfly plate are of blind hole structures 22 to prevent water from entering from the end parts.

As shown in figure 2, the direct drinking water butterfly valve adopts the lengthened shaft sleeve 3, and the shaft sleeve 3 directly extends into the butterfly plate 2; an O-shaped ring 4 made of NBR material is arranged near the orifice of the butterfly plate 2 where the shaft sleeve 3 enters; an O-shaped ring 5 and NBR material are arranged near the orifice of the shaft sleeve 3 and the orifice of the valve body 1, the O-shaped ring 4 and an epoxy layer 21 of the butterfly plate form sealing, the O-shaped ring 5 and an epoxy layer 12 of the valve body form sealing, water is prevented from entering, and therefore the butterfly plate 2 and the inner part of the orifice of the valve body 1 are prevented from being corroded.

As above-mentioned straight drinking water butterfly valve, as shown in fig. 3, locating pin 7 chooses for use 1Cr17Ni2 stainless steel, and at 7 drill way department chamfers of locating pin, sets up O type circle 6, the NBR material, realizes that O type circle 6 and butterfly plate locating pin drill way department epoxy layer 21 form sealed, prevents that water from getting into, and the protection screw thread prevents that the screw thread from rusting and corroding.

As shown in FIG. 4, the pressing ring 8 is made of 316 stainless steel, and the O-shaped ring 9 and the NBR material are arranged at the boss where the pressing ring 8 and the butterfly plate 2 are matched, so that sealing is formed; the screw 10 selects 316 materials, the lower plane of the head of the screw 10 is provided with a rubber gasket 13, and the EPDM materials form sealing to prevent water from entering, so that a threaded hole on the butterfly plate is prevented from rusting and corroding.

As shown in FIG. 5, the set top screw 14 is made of 316 stainless steel, and a raw adhesive tape 15 is wound on the screw thread to prevent water from entering.

Claims

1. A direct drinking water butterfly valve is characterized in that: the butterfly valve comprises a valve body, a butterfly plate, a lengthened shaft sleeve, seals of the lengthened shaft sleeve and a butterfly plate hole, seals of the lengthened shaft sleeve and a valve body hole, seals of a positioning pin and the positioning pin, seals of a butterfly plate pressing ring and a butterfly plate pressing ring, seals of a screw and a screw, and seals of a set-top screw and a set-top screw.

2. A direct drinking water butterfly valve according to claim 1, wherein: epoxy resin is sprayed on the inner surface and the outer surface of the valve body, and stainless steel is sprayed and welded on the sealing surface.

3. A direct drinking water butterfly valve according to claim 2, wherein: epoxy resin is sprayed on the surface of the butterfly plate, the upper valve rod and the lower valve rod are designed to be installed from two ends, and the end parts are of blind hole structures.

4. A direct drinking water butterfly valve according to claim 3, wherein: the lengthened shaft sleeve directly extends into the butterfly plate; an O-shaped ring seal is arranged near the orifice of the butterfly plate where the shaft sleeve enters; an O-shaped ring is arranged near the shaft sleeve and the valve body hole for sealing.

5. A direct drinking water butterfly valve according to claim 4, characterized in that: the locating pin chooses stainless steel for use, and at locating pin pinhole department chamfer, it is sealed to set up O type circle.

6. A direct drinking water butterfly valve according to claim 5, characterized in that: the pressing ring is made of stainless steel, and an O-shaped ring seal is arranged at a boss matched with the pressing ring and the butterfly plate; the screw is made of stainless steel, and a rubber gasket is arranged on the lower plane of the head of the screw for sealing.

7. A direct drinking water butterfly valve according to claim 6, characterized in that: the top screw is made of stainless steel, and the thread is wound with a raw adhesive tape for sealing.