CN207394036U - A kind of three-chip type forged steel swing check valve - Google Patents

Abstract

The utility model discloses a three-piece forged steel swing check valve, which comprises a valve body, a left connecting body, a right connecting body, a valve disc, a valve seat, a pin shaft, a first fluid passage, a valve body fluid passage, The second fluid channel, the left connecting body and the right connecting body are respectively fixed on the left and right sides of the valve body, the first fluid channel is arranged inside the left connecting body, the second fluid channel is arranged inside the right connecting body, the first fluid channel, the valve body The fluid channel and the second fluid channel are at the same horizontal position; the valve seat is installed on the left connecting body, the sealing surface of the valve seat is perpendicular to the fluid channel of the valve body, a valve disc is arranged in the valve seat, and the valve disc is rotated and sleeved on the pin shaft , the pin shaft is fixed on the left connecting body, when the valve clack is closed, the sealing surface of the valve clack and the sealing surface of the valve seat fit together, the utility model has good sealing performance and good non-return effect.

Description

A three-piece forged steel swing check valve

technical field

The utility model relates to the field of valves, in particular to a three-piece forged steel swing check valve.

Background technique

Check valve refers to a valve that automatically opens and closes the valve flap by the flow of the medium itself, and its main function is to prevent the medium from flowing backward. The disadvantage of the single disc check valve is that a considerable impact pressure is generated when the medium flows back, which is likely to cause wear of the internal parts of the valve and reduce the check effect.

Contents of the invention

In order to solve the above problems, the utility model provides a three-piece forged steel swing check valve.

The technical scheme of the utility model is: a three-piece forged steel swing check valve, including a valve body, a left connecting body, a right connecting body, a valve flap, a valve seat, a pin shaft, a first fluid passage, a valve body The fluid channel and the second fluid channel, the left connecting body and the right connecting body are respectively fixed on the left and right sides of the valve body, the first fluid channel is arranged inside the left connecting body, the second fluid channel is arranged inside the right connecting body, and the first fluid channel . The fluid channel of the valve body and the second fluid channel are at the same horizontal position; the valve seat is installed on the left connecting body, the sealing surface of the valve seat is perpendicular to the fluid channel of the valve body, and a valve disc is arranged in the valve seat, and the valve disc is rotated and sleeved on the On the pin shaft, the pin shaft is fixed on the left connecting body. When the valve clack is closed, the sealing surface of the valve clack fits with the sealing surface of the valve seat.

Further, an O-ring is embedded on the sealing surface of the valve disc.

Further, an O-ring is embedded between the valve seat and the left connecting body.

The beneficial effects of the utility model are: the utility model is different from the conventional swing check valve in that the sealing surface of the valve seat is perpendicular to the fluid channel of the valve body, and an O-shaped sealing ring is embedded on the sealing surface of the valve disc , There is also an O-ring embedded between the valve seat and the left connecting body, which has good sealing performance and good non-return effect.

Description of drawings

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

Fig. 1 is a structural representation of the utility model.

Figure 2 is an enlarged view of the location of the O-ring.

Detailed ways

The specific implementation of the present utility model will be further described below in conjunction with the accompanying drawings, and this embodiment does not constitute a limitation to the present utility model.

As shown in Figure 1, a three-piece forged steel swing check valve includes a valve body 1, a left connecting body 2, a right connecting body 3, a disc 4, a valve seat 5, a pin shaft 6, and a stud 7 , nut 8, first fluid channel 9, valve body fluid channel 10, second fluid channel 11, bolt 12, the left connecting body 2 and the right connecting body 3 are respectively fixed on the valve body 1 through the cooperation of the stud 7 and the nut 8 On the left and right sides, the first fluid channel 9 is provided inside the left connecting body 2, and the second fluid channel 11 is provided inside the right connecting body 3. The first fluid channel 9, the valve body fluid channel 10 and the second fluid channel 11 are at the same horizontal position , when the check valve is opened, the fluid passes through the first fluid passage 9 , the valve body fluid passage 10 and the second fluid passage 11 in sequence.

The valve seat 5 is installed on the left connecting body 2 through bolts 12 , and the sealing surface 13 of the valve seat 5 is perpendicular to the fluid channel 10 of the valve body. A valve disc 4 is arranged inside the valve seat 5 , and the valve disc 4 is rotatably sleeved on a pin shaft 6 , and the pin shaft 6 is fixed on the left connecting body 2 . When the valve flap 4 is closed, the sealing surface of the valve flap 4 is in contact with the sealing surface 13 of the valve seat 5 , and fluid cannot enter the first fluid passage 9 from the fluid passage 10 of the valve body.

In order to ensure a better sealing effect, as shown in FIG. 2 , an O-ring 14 is embedded on the sealing surface of the valve disc 4 . An O-ring 14 is also embedded between the valve seat 5 and the left connecting body 2 .

The above are only preferred embodiments of the utility model, and are not intended to limit the utility model. Those skilled in the art can make various modifications or equivalent replacements to the utility model within the essence and protection scope of the utility model , such modification or equivalent replacement should also be deemed to fall within the protection scope of the technical solution of the present utility model.

Claims (3)

1. A three-piece forged steel swing check valve, characterized in that it includes a valve body, a left connecting body, a right connecting body, a valve disc, a valve seat, a pin shaft, a first fluid channel, and a valve body fluid channel , the second fluid channel, the left connecting body and the right connecting body are respectively fixed on the left and right sides of the valve body, the first fluid channel is arranged inside the left connecting body, the second fluid channel is arranged inside the right connecting body, the first fluid channel, the valve The body fluid channel and the second fluid channel are at the same horizontal position; the valve seat is installed on the left connecting body, the sealing surface of the valve seat is perpendicular to the valve body fluid channel, a valve disc is arranged in the valve seat, and the valve disc is rotated and sleeved on the pin shaft On the top, the pin shaft is fixed on the left connecting body. When the valve clack is closed, the sealing surface of the valve clack fits with the sealing surface of the valve seat. 2. A three-piece forged steel swing check valve according to claim 1, characterized in that an O-ring is embedded on the sealing surface of the disc. 3. A three-piece forged steel swing check valve according to claim 1, wherein an O-ring is embedded between the valve seat and the left connecting body.