CN202074055U

CN202074055U - Three-section type two-way sealed high-pressure butterfly valve

Info

Publication number: CN202074055U
Application number: CN2011201657489U
Authority: CN
Inventors: 李晓明; 金智勇; 金智政
Original assignee: ZHEJIANG ONEIST VALVE CO Ltd
Current assignee: ZHEJIANG ONEIST VALVE CO Ltd
Priority date: 2011-05-18
Filing date: 2011-05-18
Publication date: 2011-12-14
Anticipated expiration: 2021-05-18

Abstract

The utility model provides a three-section type two-way sealed high-pressure butterfly valve, which comprises a valve body and a valve cover connected onto the valve body, wherein a valve plate, valve rods, sealing rings, retainer flanges and protective sleeves are arranged in the valve body and the valve cover. The three-section type two-way sealed high-pressure butterfly valve is characterized in that according to a three-section type valve body structure, the sealing rings are arranged on the inner sides of the connecting ends of the valve cover and the valve body and are fastened on the valve cover through the retainer flanges and inner hexagon screws. The three-section type two-way sealed high-pressure butterfly valve provided by the utility model has the advantages of high pressure resistance, two-way sealing, and the like, so that the deficiency of the traditional butterfly valve is remedied; and the structure is simple, the process is diversified and the three-section type two-way sealed high-pressure butterfly valve can be formed in a casting manner, a forging manner or a welding manner.

Description

3 stops two way sealed high pressure butterfly valve

Technical field:

The utility model relates to a kind of valving that blocks or regulate flow in pipe-line system.

Background technique:

At present, traditional butterfly valve is to make open-shut device with the valve plate of circle, realize opening and closing by rotational valve plate, because traditional butterfly valve is subjected to the restriction of its structure characteristic, usually only be applicable to the pipe-line system of mesolow, and along with expanding economy, commercial plant constantly develops to high parameter, maximization direction, the working condition of pipe-line system also becomes increasingly complex, under many circumstances, the working condition of valve applications have simultaneously high pressure and double fluid to situation, therefore traditional butterfly valve has not satisfied the demand of industrial piping system operating mode.

Summary of the invention:

For satisfy have simultaneously in the industrial piping system high pressure and double fluid to working condition, the utility model provides a kind of 3 stops two way sealed high pressure butterfly valve, this butterfly valve has advantages such as high pressure resistant and two way sealed, has remedied the deficiency of traditional butterfly valve.

The technological scheme that its technical problem that solves the utility model adopts is: a kind of 3 stops two way sealed high pressure butterfly valve, comprise valve body and the valve gap that is connected on the valve body, and in valve body and valve gap, be provided with valve plate, valve rod, seal ring, pressing plate circle, protecting jacket; It is characterized in that: the 3 stops valve body structure, be provided with seal ring in the inboard of valve gap and valve body connecting end, seal ring is fastened on the valve gap by pressing plate circle and socket head screw.

Further feature is: valve plate is made of valve plate frame and valve disc, is processed with the step that matches with valve plate frame at the back side of valve disc, is fastened on the valve plate frame with socket head screw, is provided with protecting jacket at the axial two ends of valve plate frame; Valve rod is made of upper valve rod and lower valve rod, and valve plate is installed in the body cavity by valve rod and protecting jacket.

The beneficial effects of the utility model are: high pressure resistant, sealability reaches two way sealed does not have leakage, operates free and relaxedly, and the output terminal torque is low, open and close rapidly, the valve plate flow resistance is little, and pressure drop coefficient is low, and simple in structure, the processing technology diversification, but both castings, but also forging molding also can welding fabrications.

Description of drawings:

Below in conjunction with the drawings and specific embodiments the utility model is further specified.

Fig. 1 is the integrally-built longitudinal sectional view of the utility model.

Fig. 2 be Fig. 1 left-hand view partly cut open figure.

Fig. 3 is the left-hand view of valve plate Fig. 1 when opening 90 °.

Fig. 4 is a three-dimensional view of the present utility model.

Among the figure: 1. tail-hood, 2. pad, 3. Lower shaft sleeve, 4. valve body, 5. valve gap; 6. seal ring 7. descends protecting jacket, 8. socket head screw, 9. lower valve rod; 10. lining, 11. valve discs, 12. valve plate frames, 13. upper valve rods; 14. pad, protecting jacket on 15., 16. socket head screws, 17. pads; 18. Upper shaft sleeve, 19. Packing seats, 20. fillers, 21. Glands; 22. support, 23. hexagon nuts, 24. stud bolts, 25. pressing plate circles.

Embodiment:

As shown in Figure 1, the utility model 3 stops two way sealed high pressure butterfly valve, comprise valve body (4) and valve gap (5), on the flange of the end of valve body (4) and valve gap (5) one ends, be processed with the bolt hole of mutual coupling, valve body (4) and valve gap (5) tightened together by stud bolt (24) and hexagon nut (23); Inboard at valve gap (5) and valve body (4) connecting end is processed with step, the seal ring of in step, packing into (6), and seal ring (6) is fastened on the valve gap (5) by pressing plate circle (25) and socket head screw (16); Be processed with the step that matches with valve plate frame (12) at the back side of valve disc (11), be fastened on the valve plate frame (12) with socket head screw (8); In the end processing four directions of upper valve rod (13), valve plate frame (12) and processing of upper valve rod (13) joint and the cubic hole that upper valve rod (13) is complementary are installed valve rod (13) with cooperation; End processing at lower valve rod (9) is circular, and valve plate frame (12) and the processing of lower valve rod (9) joint and the circular hole that lower valve rod (9) is complementary are installed lower valve rod (9) to cooperate; Protecting jacket (15) is equipped with in joint at upper valve rod (13) and valve plate frame (12); protecting jacket (7) is equipped with down in the joint of lower valve rod (9) and valve plate frame (12), to prevent valve plate frame (12) axial float and to avoid the erosion of medium to upper valve rod (13) and lower valve rod (9).

The working principle of the utility model 3 stops two way sealed high pressure butterfly valve is: when drive unit was applied to upper valve rod (13) with moment, upper valve rod (13) drives valve plate frame (12) and valve disc (11) rotation realizes opening and closing.

Claims

1. a 3 stops two way sealed high pressure butterfly valve comprises valve body and the valve gap that is connected on the valve body, is provided with valve plate, valve rod, seal ring, pressing plate circle, protecting jacket in valve body and valve gap; It is characterized in that: the 3 stops valve body structure, be provided with seal ring in the inboard of valve gap and valve body connecting end, seal ring is fastened on the valve gap by pressing plate circle and socket head screw.

2. 3 stops two way sealed high pressure butterfly valve according to claim 1, it is characterized in that: valve plate is made of valve plate frame and valve disc, be processed with the step that matches with valve plate frame at the back side of valve disc, be fastened on the valve plate frame, be provided with protecting jacket at the axial two ends of valve plate frame with socket head screw; Valve rod is made of upper valve rod and lower valve rod, and valve plate is installed in the body cavity by valve rod and protecting jacket.