CN211202933U

CN211202933U - Soft sealing gate valve

Info

Publication number: CN211202933U
Application number: CN201922186608.9U
Authority: CN
Inventors: 蒋武波; 金望来; 朱燕珍
Original assignee: Zhejiang Hengbiao Valve Co ltd
Current assignee: Zhejiang Hengbiao Valve Co ltd
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-08-07
Anticipated expiration: 2029-12-09

Abstract

The utility model discloses a soft sealing gate valve, including the disk seat, with disk seat threaded connection's valve casing, with the valve rod of the inside threaded connection of valve casing, the valve rod upper end is connected with the hand wheel, and the lower extreme is connected with the flange piece, the flange piece is the turriform and sets up multichannel alternate distribution's annular groove and annular lug, it has the rubber seal to mould plastics on the flange piece, it is sunken with rubber seal matched with funnel type to have seted up in the disk seat, sunken and seting up in the inside fluid passage of disk seat and be linked together. A soft sealing gate valve, adopt the structure of rubber seal body soft seal, stand wear and tear, the leakproofness is good, long service life, it is convenient to change the part.

Description

Soft sealing gate valve

Technical Field

The utility model relates to a valve field especially relates to a soft sealing gate valve.

Background

The gate valve is a shutter, the movement direction of the shutter is vertical to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled. The gate valve seals through disk seat and flashboard contact, and current gate valve adopts the mode of hard seal, and hard seal structure is after long-term use, and easy wearing and tearing are sealed not tight, the condition of leaking appears easily, and it is inconvenient to change the flashboard.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a soft sealing gate valve adopts the structure of rubber seal body soft seal, and is stand wear and tear, and the leakproofness is good, long service life, and it is convenient to change the part.

In order to achieve the above purpose, the utility model provides a technical scheme is: including the disk seat, with disk seat threaded connection's valve casing, with the valve rod of the inside threaded connection of valve casing, the valve rod upper end is connected with the hand wheel, and the lower extreme is connected with the flange piece, the flange piece is the turriform and sets up multichannel phase-to-phase distribution's annular groove and annular lug, it has the rubber seal to mould plastics on the flange piece, it is sunken with rubber seal matched with funnel type to have seted up in the disk seat, sunken and seting up in the inside fluid passage of disk seat and be linked together.

Furthermore, a large rubber sealing ring is sleeved on the valve casing at the uppermost end of the threaded connection between the valve casing and the valve seat.

Further, the upper part of the valve rod is sleeved with a small rubber sealing ring.

Furthermore, a clamp spring is clamped on the valve rod between the hand wheel and the valve casing.

The utility model has the advantages that: the utility model provides a soft seal gate valve, adopts the structure of rubber seal body soft seal, and is stand wear and tear, and the leakproofness is good, long service life, and it is convenient to change the part.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is a perspective view of the present invention with the valve seat removed;

fig. 3 is a perspective view of the valve seat of the present invention;

fig. 4 is a schematic structural view of the flange plate of the present invention;

fig. 5 is a sectional view of the present invention when opened;

FIG. 6 is a schematic view of the structure of the area A of FIG. 5 according to the present invention;

fig. 7 is a cross-sectional view of the present invention when closed.

Detailed Description

Example 1

As shown in fig. 1-7, a soft seal gate valve comprises a valve seat 1, a valve casing 2 in threaded connection with the valve seat 1, and a valve rod 3 in threaded connection with the inside of the valve casing 2, wherein the upper end of the valve rod 3 is connected with a hand wheel 4, the lower end of the valve rod is connected with a flange plate 5, the flange plate 5 is tower-shaped and is provided with a plurality of annular grooves 6 and annular bumps 7 distributed alternately, the flange plate 5 is provided with a rubber seal body 8 by injection molding, a funnel-shaped recess 12 matched with the rubber seal body 8 is formed in the valve seat 1, and the recess 12 is communicated with a fluid channel arranged inside the valve seat 1.

The valve casing 2 is sleeved with a large rubber sealing ring 9 on the valve casing 2 at the uppermost end of the threaded connection between the valve casing 2 and the valve seat 1.

The upper part of the valve rod 3 is sleeved with a small rubber sealing ring 10.

The snap spring 11 is clamped on the valve rod 3 between the hand wheel 4 and the valve casing 2.

The flange piece 5 is injected with a rubber sealing body 8, and a strong glue is adhered between the rubber sealing body 8 and the flange piece 5 to prevent the flange piece from falling off. When the gate valve is opened, the hand wheel 4 is screwed to drive the valve rod 3 and the rubber sealing body 8 to move upwards, so that the rubber sealing body 8 leaves the recess 12, and a fluid channel in the valve seat 1 is communicated; when the gate valve is closed, the hand wheel 4 is screwed to drive the valve rod 3 and the rubber sealing body 8 to move downwards, so that the rubber sealing body 8 is tightly combined with the recess 12 to block a fluid passage inside the valve seat 1, and the rubber sealing body 8 is used as a gate plate, so that the gate valve is convenient to replace and maintain.

The soft seal gate valve of this embodiment adopts the structure of rubber seal body soft seal, and is stand wear and tear, and the leakproofness is good, long service life, and it is convenient to change the part.

Claims

1. The utility model provides a soft sealing gate valve, includes disk seat (1), with disk seat (1) threaded connection's valve casing (2), with valve casing (2) internal thread connection's valve rod (3), valve rod (3) upper end is connected with hand wheel (4), and the lower extreme is connected with flange piece (5), its characterized in that: flange piece (5) are turriform and offered annular groove (6) and annular lug (7) of multichannel alternate distribution, it has rubber seal (8) to mould plastics on flange piece (5), set up sunken (12) with rubber seal (8) matched with funnel type in disk seat (1), sunken (12) are linked together with seting up in the inside fluid passage of disk seat (1).

2. The soft seal gate valve of claim 1, wherein: the valve casing (2) is sleeved with a large rubber sealing ring (9) on the valve casing (2) at the uppermost end of the threaded connection of the valve casing (2) and the valve seat (1).

3. The soft seal gate valve of claim 1, wherein: the upper part of the valve rod (3) is sleeved with a small rubber sealing ring (10).

4. The soft seal gate valve of claim 1, wherein: the clamp spring (11) is clamped on the valve rod (3) between the hand wheel (4) and the valve casing (2).