CN213039860U

CN213039860U - Leakproof gate valve

Info

Publication number: CN213039860U
Application number: CN202021744667.XU
Authority: CN
Inventors: 梁金灿; 黄振强
Original assignee: Fujian Hongjie Valve Co ltd
Current assignee: Fujian Hongjie Valve Co ltd
Priority date: 2020-08-20
Filing date: 2020-08-20
Publication date: 2021-04-23
Anticipated expiration: 2030-08-20

Abstract

The utility model discloses a leakproof gate valve, the structure of which comprises a valve seat, a valve cavity, a flange plate, a flange gasket, a valve cover, a supporting seat, a packing gland, a threaded rod, a hand wheel, a pressing ring, a sealing gasket, a spring seat, a pressing plate, a movable groove, a movable plate, a flashboard and a movable mechanism, wherein the movable mechanism comprises a spring, a winding seat, a stay cord and a fixed seat, the movable plate moves along the movable groove arranged on the valve cavity until the threaded rod moves to the top end, the movable plate is completely unfolded, and the protective fluid impacts the threaded rod and the flashboard to cause abrasion, the utility model has the advantages of improving the problem that the sealing effect is reduced due to, and the impact of the fluid on the valve body causes the abrasion of parts and fillers in the valve cavity to generate leakage, thereby affecting the beneficial effect of the normal use of the valve body and prolonging the service life of the gate valve.

Description

Leakproof gate valve

Technical Field

The utility model belongs to the technical field of the valve, in particular to prevent gate valve of leakage.

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, normally sealed face can build up welding metal material in order to increase the wearability, if build up welding, stainless steel etc., the flashboard has rigidity flashboard and elasticity flashboard, according to the difference of flashboard, the gate valve divide into rigidity gate valve and elasticity gate valve, along with the rapid development of scientific and technological, also obtained technical improvement, but prior art is novel probably to produce ageing wearing and tearing along with the switch number of times valve rod of valve and leads to sealed effect to reduce to and the condition that the wearing and tearing of the interior filler of valve pocket produced the leakage, influence the normal use of valve body.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to overcome the defects in the prior art, a leakage-proof gate valve is provided so as to solve the problems that the sealing effect is reduced due to the fact that a valve rod is likely to generate aging abrasion, and the normal use of a valve body is influenced due to the fact that the valve rod is abraded to generate leakage.

(II) technical scheme

The utility model discloses a following technical scheme realizes: the utility model provides a leak-proof gate valve, which comprises a valve seat, a valve cavity, a flange plate, a flange gasket, a valve cover, a supporting seat, a packing gland, a threaded rod, a hand wheel, a pressing ring, a sealing gasket, a spring seat, a pressing plate, a movable groove, a movable plate, a flashboard and a movable mechanism; the valve seat is internally provided with a valve cavity, two ends of the valve seat are provided with flange plates, the top end of the valve seat is provided with a flange gasket and connected with a valve cover through the flange gasket, the top end of the valve cover is provided with a supporting seat, the supporting seat is provided with a packing gland, the top end of the packing gland is provided with a pressing ring, a threaded rod penetrating to the top end of the packing gland is arranged in the valve seat, the top end of the threaded rod is provided with a hand wheel, a sealing gasket is arranged in the valve cover, the bottom end of the sealing gasket is fixedly connected with a spring seat.

Furthermore, the movable mechanism comprises a spring, a winding seat, a pull rope and a fixed seat, the spring is arranged in the movable mechanism, the pull rope is movably wound on the winding seat, one end of the pull rope is fixedly connected with the spring, the other end of the pull rope is fixedly connected with the fixed seat, and the fixed seat is fixed to one end of the movable plate.

Furthermore, the threaded rod outside is equipped with rust-resistant wear pad, rust-resistant wear pad and threaded rod threaded connection.

Furthermore, the valve cavity is internally provided with an antirust filler.

Furthermore, the pressing plate is made of a stainless steel metal plate, a through hole is formed in the middle of the pressing plate, and threads matched with threads on the surface of the threaded rod are arranged on the internal standard surface of the through hole.

Further, the bolt holes formed in the flange gasket are in threaded connection with the bolts, so that the valve seat is connected with the valve cover.

Furthermore, the valve seat and the flashboard are made of stainless steel.

(III) advantageous effects

Compared with the prior art, the utility model, following beneficial effect has:

1) the valve rod is probably to produce ageing wearing and tearing and lead to sealed effect to reduce for solving, through being equipped with rust-resistant wear pad in the threaded rod outside, rust-resistant wear pad and threaded rod threaded connection reduce the valve rod because long-term use produces the condition emergence that wearing and tearing lead to leaking.

2) In order to solve the problem that the impact of fluid on the valve body causes the abrasion of parts and fillers in the valve cavity to generate leakage, the movable plate is connected with the gate valve, and when the valve rod moves upwards, the movable plate is driven to expand to protect the interior of the valve cavity, so that the abrasion of the fillers caused by the direct impact on the valve cavity is avoided.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic front view of the cross-sectional structure of the present invention;

FIG. 3 is a schematic view of the start-up structure of the present invention;

fig. 4 is an enlarged schematic structural view of a portion a in fig. 2 according to the present invention;

in the figure: 1-valve seat, 2-valve cavity, 3-flange plate, 4-flange gasket, 5-bolt, 6-valve cover, 7-support seat, 8-packing gland, 9-threaded rod, 10-hand wheel, 11-pressing ring, 12-sealing gasket, 13-spring seat, 14-pressing plate, 15-antirust wear-resistant pad, 16-movable groove, 17-movable plate, 18-gate plate, 19-antirust packing, 20-movable mechanism, 201-spring, 202-winding seat, 203-pull rope and 204-fixed seat.

Detailed Description

Referring to fig. 1, fig. 2, fig. 3 and fig. 4, the present invention provides a leak-proof gate valve: the valve comprises a valve seat 1, a valve cavity 2, a flange plate 3, a flange gasket 4, a valve cover 6, a supporting seat 7, a packing gland 8, a threaded rod 9, a hand wheel 10, a compression ring 11, a sealing gasket 12, a spring seat 13, a pressing plate 14, a movable groove 16, a movable plate 17, a flashboard 18 and a movable mechanism 20; be equipped with valve pocket 2 in the disk seat 1, 1 both ends of disk seat are equipped with ring flange 3, 1 top of disk seat is equipped with flange gasket 4 and is connected with valve gap 6 through

flange gasket

4, 6 tops of valve gap are equipped with supporting seat 7, supporting seat 7 is equipped with gland 8, 8 tops of gland are equipped with clamp ring 11, be equipped with threaded rod 9 in the disk seat 1 and run through to 8 tops of gland, 9 tops of threaded rod are equipped with hand wheel 10, be equipped with seal gasket 12 in the valve gap 6, seal gasket 12 bottom rigid coupling spring holder 13, spring holder 13 and clamp plate 14 rigid coupling, be equipped with flashboard 18 in the valve pocket 2, flashboard 18 and threaded rod 9 rigid coupling, be equipped with movable mechanism 20 in the flashboard 18.

The movable mechanism 20 includes a spring 201, a winding seat 202, a pull rope 203, and a fixing seat 204, the spring 201 is disposed in the movable mechanism 20, the pull rope 201 is movably wound on the winding seat 202, one end of the pull rope 201 is fixedly connected to the spring 201, the other end of the pull rope 201 is fixedly connected to the fixing seat 204, and the fixing seat 204 is fixed to one end of the movable plate 17.

Wherein, threaded rod 9 outside is equipped with rust-resistant wear pad 15, rust-resistant wear pad 15 and threaded rod 9 threaded connection.

Wherein, the valve cavity 2 is internally provided with an antirust filler 19.

The pressing plate 14 is a stainless steel metal plate, a through hole is formed in the middle of the pressing plate, and threads matched with the threads on the surface of the threaded rod 9 are arranged on the internal standard surface of the through hole.

The bolt hole arranged on the flange gasket 4 is in threaded connection with the bolt 5, so that the valve seat 1 is connected with the valve cover 6.

Wherein, the valve seat 1 and the flashboard 18 are made of stainless steel.

The working principle is as follows: the valve seat 1 is connected with the pipeline, the valve seat 1 is connected with the valve cover 6 through the bolt 5, fluid flowing into the valve body is blocked by the movable plate 17 arranged in the valve cavity 2 and cannot contact the gate plate 18 and valve parts, the hand wheel 10 is rotated, the threaded rod 9 moves upwards to drive the gate plate 18 to move, the gate plate 18 moves upwards to drive the movable plate 17 to move, the fluid enters the valve cavity through a gap, the winding seat 202 in the movable device 20 rotates the pull rope 203 along with continuous upward movement, the pull rope 203 is connected with the fixed seat 204 arranged on the movable plate 17, the movable plate 17 moves along the movable groove 16 arranged in the valve cavity 2 until the threaded rod 9 moves to the top end, the movable plate 17 is completely unfolded to protect the threaded rod 9 and the gate plate 18 from being abraded due to fluid impact, and the pressing plate 14 arranged in the valve cover 6 applies pressure to, the valve cavity is internally provided with antirust filler to further protect the valve body and prevent leakage.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A gate valve that prevents leakage, its characterized in that: the valve comprises a valve seat (1), a valve cavity (2), a flange plate (3), a flange gasket (4), a valve cover (6), a supporting seat (7), a packing gland (8), a threaded rod (9), a hand wheel (10), a pressing ring (11), a sealing gasket (12), a spring seat (13), a pressing plate (14), a movable groove (16), a movable plate (17), a flashboard (18) and a movable mechanism (20); a valve cavity (2) is arranged in the valve seat (1), flange plates (3) are arranged at two ends of the valve seat (1), a flange gasket (4) is arranged at the top end of the valve seat (1) and is connected with a valve cover (6) through the flange gasket (4), a supporting seat (7) is arranged at the top end of the valve cover (6), a packing gland (8) is arranged on the supporting seat (7), a pressing ring (11) is arranged at the top end of the packing gland (8), a threaded rod (9) is arranged in the valve seat (1) and penetrates to the top end of the packing gland (8), a hand wheel (10) is arranged at the top end of the threaded rod (9), a sealing gasket (12) is arranged in the valve cover (6), a spring seat (13) is fixedly connected at the bottom end of the sealing gasket (12), the spring seat (13) is fixedly connected with a pressing plate (14), a flashboard, the movable plate (17) is in clearance fit with the movable groove (16).

2. A leak resistant gate valve as defined in claim 1, wherein: the movable mechanism (20) comprises a spring (201), a winding seat (202), a pull rope (203) and a fixed seat (204), the spring (201) is arranged in the movable mechanism (20), the pull rope (203) is movably wound on the winding seat (202), one end of the pull rope (203) is fixedly connected with the spring (201), the other end of the pull rope is fixedly connected with the fixed seat (204), and the fixed seat (204) is fixed to one end of the movable plate (17).

3. A leak resistant gate valve as defined in claim 1, wherein: the outer side of the threaded rod (9) is provided with an antirust wear-resistant pad (15), and the antirust wear-resistant pad (15) is in threaded connection with the threaded rod (9).

4. A leak resistant gate valve as defined in claim 1, wherein: the valve cavity (2) is internally provided with an antirust filler (19).

5. A leak resistant gate valve as defined in claim 1, wherein: the pressing plate (14) is a stainless steel metal plate, a through hole is formed in the middle of the pressing plate, and threads matched with the threads on the surface of the threaded rod (9) are arranged on the internal standard surface of the through hole.

6. A leak resistant gate valve as defined in claim 1, wherein: and a bolt hole arranged on the flange gasket (4) is in threaded connection with the bolt (5) so that the valve seat (1) is connected with the valve cover (6).

7. A leak resistant gate valve as defined in claim 1, wherein: the valve seat (1) and the flashboard (18) are made of stainless steel materials.