CN201173316Y

CN201173316Y - Check-valve

Info

Publication number: CN201173316Y
Application number: CNU2007200373286U
Authority: CN
Inventors: 邱晓来; 王汉洲; 黄明金
Original assignee: ZHEJIANG CHAODA VALVE CO Ltd
Current assignee: Chaoda Valve Group Co., Ltd.
Priority date: 2007-04-29
Filing date: 2007-04-29
Publication date: 2008-12-31
Anticipated expiration: 2017-04-29

Abstract

The utility model relates to a check valve, which comprises a valve body, a positioning plate, a positioning pin, positioning sheets, a valve shaft, a valve clack, a positioning shaft and a torsion spring, wherein, a positioning hole on the positioning plate has a notch, the notch of the positioning hole is positioned on the lateral wall of the positioning plate, and the notch direction is horizontally crossed with the installation direction of a valve body channel. The check valve has the advantages that the check valve is provided, and the notch on the check valve is positioned on the lateral wall of the positioning hole of the positioning plate, compared with prior art, because the notch direction is horizontally crossed with the installation direction of the valve body channel, namely, the notch direction is crossed with the flow direction of the medium passing through the valve body, after the positioning pin is arranged in the positioning hole, by dint of the impact resistant force of the inner wall of the positioning hole, the impact resistant force caused by the medium becomes larger, the bearing torque is large, and the assembly reliability of the valve is enhanced.

Description

A kind of safety check

Technical field

The utility model relates to a kind of valve, relates in particular to a kind of safety check.

Background technique

As shown in Figure 1, safety check of the prior art is by valve body a1, positioning plate a2, locating stud a3, location piece a4, valve shaft a5, flap a6, positioning shaft a7, compositions such as torsion spring a8, positioning plate a2 is the pedestal as stationary positioned axle a7 and valve shaft a5, on the valve body a1 inwall, following both sides respectively are provided with a positioning plate a2, positioning plate a2 has upper wall, lower wall, two sidewall a23, rear wall, antetheca, be provided with the positioning hole a21 that is used for fixing positioning shaft a7 and the fixing positioning hole a22 of valve shaft a5 on the upper wall of positioning plate a2 side by side, be used for fixing the positioning hole a21 sidewall of locating stud a3, be to offer a breach a211 on the antetheca of positioning plate a2, breach a211 direction is consistent by the direction of valve body a1 with medium, safety check is in long-term work, positioning shaft a7 wherein, locating stud a3 must be subjected to the impact of medium, because breach a211 direction is consistent by the flow direction of valve body a1 with medium, the locating stud a3 power that always withstands shocks, may cause locating stud a3 loosening, influence the assembly reliability of valve body.

Summary of the invention

The purpose of this utility model is to provide a kind of assembly reliability high safety check at not enough defective of the prior art.

For achieving the above object, the utility model adopts a kind of safety check, comprise valve body, positioning plate, locating stud, location piece, valve shaft, flap, positioning shaft, torsion spring, positioning hole on the positioning plate has breach, the breach of positioning hole is positioned on the sidewall of positioning plate, and the passage of breach direction and valve body is provided with the direction level and intersects.

This practicality further is set to breach direction on the positioning plate and the passage of valve body is provided with the direction horizontal vertical.

The utility model is by providing a kind of safety check, breach on this safety check is positioned on the sidewall of the positioning hole on the positioning plate, compare with prior art, because the passage of breach direction and valve body is provided with the direction level and intersects, promptly intersect with the media flow direction of passing through valve body, locating stud is behind the positioning hole of packing into, rely on the inwall opposing impact force of positioning hole, the impact force brought of opposing medium becomes big, and it is big to bear moment, and the assembly reliability of valve improves.

Description of drawings

Fig. 1 is the utility model background technique check valve structure decomposing schematic representation.

Fig. 2 is the utility model embodiment plan view.

Fig. 3 is the A-A sectional view of Fig. 2.

Fig. 4 is the utility model embodiment exploded view.

Embodiment

As Fig. 2,3, shown in 4, this practical specific embodiment is a kind of safety check, comprise valve body 1, positioning plate 2, locating stud 3, location piece 5, valve shaft 6, flap 7, positioning shaft 8, torsion spring 9, wherein valve body 1 in a tubular form, both-side opening, form and two suitable half-moon-shaped passages 11 of flap 7 shapes on the valve body 1, positioning plate 2 is flat-shaped cuboid, has upper wall 21, lower wall 22, two sidewalls 23, rear wall 24, antetheca 25, go to the bottom, longitudinally offer a valve shaft fixed hole 26 and a positioning hole 21 on the positioning plate 2, positioning hole 21 has breach 4, breach 4 is positioned at the sidewall of the positioning hole 21 on the positioning plate 2, be on the sidewall 24 of positioning plate 2, half-moon-shaped passage 11 on breach 4 directions and the valve body 1 the direction horizontal vertical is set, promptly intersect with media flow direction by valve body, two positioning plates 2 be installed in respectively valve body 1 inwall on, following both sides, two fan flaps 7 are movably set on the valve shaft 6, the two ends of valve shaft 6 are separately fixed in the valve shaft fixed hole 26 of positioning plate 2, location piece 5 is passed at the two ends of positioning shaft 8, be fixed at last in the positioning hole 21, positioning plate 2 is to rely on locating stud 3 to be fixed on the inwall of valve body 1.

The utility model intersects as long as the half-moon-shaped passage 11 of breach 4 directions and valve body 1 is provided with the direction level, that the direction level is set is not consistent with the half-moon-shaped passage 11 of valve body 1, can learn from the media flow direction of Fig. 3, when medium when valve body 1 passes through, just can rely on the inwall opposing impact force of positioning hole 21, the direction horizontal vertical is set is most preferred embodiment to the half-moon-shaped passage 11 of breach 4 directions and valve body 1 in the foregoing description.

The utility model is by providing a kind of safety check, breach 4 on this safety check is positioned on the sidewall of the positioning hole 21 on the positioning plate 2, compare with prior art, because the passage of breach 4 directions and valve body 1 is provided with the direction level and intersects, promptly intersect with the media flow direction of passing through valve body 1, locating stud 3 is behind the positioning hole 21 of packing into, rely on the inwall opposing impact force of positioning hole 21, the impact force brought of opposing medium becomes big, and it is big to bear moment, and the assembly reliability of valve improves.

Claims

1, a kind of safety check, comprise valve body (1), positioning plate (2), locating stud (3), location piece, valve shaft, flap, positioning shaft, torsion spring, positioning hole (21) on the positioning plate (2) has breach (4), it is characterized in that: the breach (4) of positioning hole (21) is positioned on the sidewall of positioning plate (2), and the passage of breach (4) direction and valve body (1) is provided with the direction level and intersects.

2, safety check according to claim 1 is characterized in that: breach (4) direction on the described positioning plate (2) and the passage of valve body (1) are provided with the direction horizontal vertical.