CN203784352U - Ball valve with butterfly check - Google Patents

Abstract

A ball valve with a butterfly check is composed of a valve body, a valve cover, a ball, a valve stem and a sleeve. The valve body and the valve cover are connected by threads, a sphere is placed in the valve body, a valve stem is placed on the sphere, and two semicircular discs are placed in the sleeve, which are connected to the sleeve with the disc rod as the rotation axis. Inside the cylinder, the two ends of the disc rod are fixed by the screw plug and the sleeve, the return spring is fixed on the disc rod, and the two ends of the return spring are respectively fixed in the positioning grooves on the two semi-arc discs and fixed by bolts connect. A medium inlet is opened in the valve cover, and a medium outlet is opened at the end of the valve body. When the handle is rotated, the ball valve is opened, the medium flows in from the medium inlet, and flows through the sphere, the momentum of the medium presses the return spring to open the semicircular disc, and the medium flows out from the medium outlet; when the medium pressure is too small or the medium is in the opposite direction When flowing, the return spring piece returns, so that the semi-circular disc is closed to prevent the medium from flowing back. The utility model has the advantages of anti-backflow, pipeline protection and long service life.

Description

A ball valve with butterfly check

technical field

The utility model relates to a ball valve, in particular to a ball valve with a butterfly check. the

Background technique

The ball valve is a common valve. The medium passage is opened or closed by rotating the handle. It mainly plays the role of cutting off, diverting and changing the flow direction of the medium on the pipeline. When the pressure of the medium is too small or the medium flows in the opposite direction, the medium backflow occurs Excessive pressure can easily cause damage to the valve body and pipeline. the

Utility model content

The purpose of the utility model is to provide a ball valve with a butterfly check. The utility model has the functions of anti-backflow, pipeline protection and long service life. the

The technical scheme involved in the utility model:

A ball valve with a butterfly check is composed of a valve body, a valve cover, a ball, a valve stem and a sleeve. the

The valve body and the valve cover are connected by threads, a sphere is arranged in the valve body, a valve stem is arranged on the sphere, the top of the valve stem is connected with a handle, and the handle is driven to rotate the valve stem to drive the sphere to rotate. the

One end of the sleeve is placed on the support plate of the sphere, and the other end is fixed in the sphere pipe through a through-hole nut. There are two semicircular arc-shaped discs placed in the sleeve, connected with the disc rod as the rotating shaft In the sleeve, the two ends of the disc rod are fixed with the sleeve through the screw plug, the return spring is fixed on the disc rod, and the two ends of the return spring are respectively fixed in the positioning grooves on the two semi-arc discs. Bolted connection. the

A medium inlet is opened in the valve cover, and a medium outlet is opened at the end of the valve body. When the handle is rotated, the ball valve is opened, the medium flows in from the medium inlet, and flows through the sphere, the momentum of the medium presses the return spring to open the semicircular disc, and the medium flows out from the medium outlet; when the medium pressure is too small or the medium is in the opposite direction When flowing, the return spring is reset, so that the semi-circular disc is closed to prevent the medium from flowing back. the

The utility model has the advantages of preventing backflow, protecting pipelines, and long service life. the

Description of drawings

Fig. 1 is a schematic diagram of a full sectional structure of the utility model in a closed state. the

Fig. 2 is a schematic diagram of a full section structure of the utility model in a fully opened state. the

Among them: 1. Bonnet, 2. Valve body, 3. Ball, 4. Valve stem, 5. Sleeve, 51. Semi-circular disc, 6. Bolt, 7. Through-hole nut, 8. Disc rod, 9 .Return spring, 10. Positioning groove, 11. Medium inlet, 12. Medium outlet. the

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail. the

The utility model as shown in Figure 1, 2, a kind of ball valve with butterfly check, is made up of valve body 2, valve cover 1, spheroid 3, valve stem 4 and sleeve 5. the

The valve body 2 is threadedly connected to the valve cover 1, a sphere 3 is arranged in the valve body 2, a valve stem 4 is arranged on the sphere 3, the top of the valve stem 4 is connected with the handle, and the handle is driven to rotate the valve stem 4 to drive Sphere 3 rotates. the

One end of the sleeve 5 is placed on the support plate of the sphere 3, and the other end is fixed in the pipe of the sphere 3 through the through-hole nut 7. Two semicircular discs 51 are arranged in the sleeve 5, The disc rod 8 is connected in the sleeve 5 with the rotating shaft, the two ends of the disc rod 8 are fixed with the sleeve 5 through the screw plug, the return spring piece 9 is fixed on the disc rod 8, and the two ends of the return spring piece 9 are respectively fixed on the The positioning grooves 10 on the two semi-arc discs 51 are fixedly connected by bolts 6 . the

A medium inlet 11 is opened in the valve cover 1 , and a medium outlet 12 is opened at the end of the valve body 2 . When the handle is rotated, the ball valve is opened, the medium flows in from the medium inlet 11, and flows through the sphere 3, the momentum of the medium presses the return spring 9 to open the semicircular disc 51, and the medium flows out from the medium outlet 12; when the medium pressure is too high Small or when the medium flows in the opposite direction, the return spring piece 9 is reset, so that the semicircular disc 51 is closed to prevent the medium from flowing back. the

Claims (1)

1. the ball valve with butterfly non-return, by valve gap (1), valve body (2), spheroid (3), valve rod (4) and sleeve (5) composition, it is characterized in that: described valve gap (1) is threaded connection with valve body (2), in described valve body (2), be mounted with a spheroid (3), on spheroid (3), be mounted with a valve rod (4), in described sleeve (5), be mounted with two semicircular arc discs (51), be connected to taking dish bar (8) as rotatingshaft in sleeve (5), dish bar (8) two ends are fixing by plug screw and sleeve (5), described reseting spring leaf (9) is fixed on dish bar (8), reseting spring leaf (9) two ends are separately fixed in the locating slot (10) on two semi-circle discs (51), be fixedly connected with by bolt (6), in described valve gap (1), have a medium import (11), valve body (2) end has a media outlet (12).