CN211574302U

CN211574302U - Gate valve

Info

Publication number: CN211574302U
Application number: CN202020207233.XU
Authority: CN
Inventors: 陈继松
Original assignee: Shanghai Shangzhou Valve Manufacture Co ltd
Current assignee: Shanghai Shangzhou Valve Manufacture Co ltd
Priority date: 2020-02-25
Filing date: 2020-02-25
Publication date: 2020-09-25
Anticipated expiration: 2030-02-25

Abstract

The utility model discloses a gate valve, both sides of a valve seat are respectively provided with a water inlet channel and a water outlet channel, a valve plate groove is arranged between the water inlet channel and the water outlet channel inside the valve seat, the upper surface of the valve seat is also provided with an elastic sealing cover, both sides of the valve seat above the valve plate groove are respectively provided with a limiting seat, the valve seat cover is connected with the upper surface of the valve seat through a bolt, a sealing element and a sliding sleeve are arranged inside the upper end of the valve seat cover, the bottom of the valve body is connected with the upper surface of the valve seat cover through a bolt, the inner side of the upper end of the valve body is provided with an inner thread, the upper end part of the valve rod is provided with an outer thread, the valve rod is arranged inside the valve body and the valve seat cover, the outer thread of the upper end part of the valve rod, the condition of water leakage can not occur, and the problem of mud accumulation in the valve plate groove can be solved.

Description

Gate valve

Technical Field

The utility model relates to the field of machinary, especially, relate to the valve, specifically be a 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. Gate valves are sealed by the contact of the valve seat and gate plate, and the sealing surface is usually welded with metal materials to increase wear resistance, such as 1Cr13, STL6, stainless steel, etc. The gate plate is divided into a rigid gate plate and an elastic gate plate according to the difference of the gate plate.

When the traditional gate valve is used, in order to prevent mud accumulation in the valve seat of the gate valve, a groove and a valve plate are not generally used for matching, but the structural stability is poor, and water leakage is easy to occur for a long time, so that an improved technology is urgently needed to solve the problem in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gate valve is provided with the valve plate groove in order to guide the valve plate in the disk seat, and the stability of valve plate improves greatly to improved closure performance, can not take place the condition of leaking, be equipped with the sealed lid of detachable elasticity simultaneously, with the problem of the long-pending mud of solution valve plate inslot.

In order to achieve the above object, the utility model provides a following technical scheme: a gate valve comprises a valve seat, a valve seat cover, a valve body, a valve rod and a valve plate;

the water inlet channel and the water outlet channel are respectively arranged on two sides of the valve seat, a valve plate groove is arranged between the water inlet channel and the water outlet channel inside the valve seat, the bottom of the valve plate groove at the lower end of the valve seat is communicated with the outside of the valve seat, an elastic sealing cover is further arranged on the upper surface of the valve seat, and limiting seats are respectively arranged on two sides of the valve seat above the valve plate groove;

the valve seat cover is connected with the upper surface of the valve seat through a bolt, and a sealing element and a sliding sleeve are arranged inside the upper end of the valve seat cover;

the bottom of the valve body is connected with the upper surface of the valve seat cover through a bolt, and the inner side of the upper end of the valve body is provided with an internal thread;

the valve rod is arranged inside the valve body and the valve seat cover, and the external thread of the upper end part of the valve rod is matched with the internal thread of the inner side of the upper end of the valve body;

the valve plate, the valve plate top is provided with the connecting seat, the connecting seat links to each other with valve rod bottom activity.

Preferably, the utility model provides a pair of gate valve, wherein, disk seat both sides and top all are provided with the flange, disk seat bottom intermediate position is provided with circular boss, the inside of the circular boss of disk seat bottom is hollow structure and communicates with the valve plate groove mutually, the circular boss outside surface of disk seat bottom is provided with the external screw thread, sets up the cooperation of circular boss and the sealed lid of elasticity, realizes the dismantlement of the sealed lid of elasticity.

Preferably, the utility model provides a pair of gate valve, wherein, the sealed intermediate position of elasticity is provided with the tympanic membrane, the sealed inboard of lid of elasticity is provided with the internal thread, the internal thread of the sealed inboard of lid of elasticity cooperatees with the external screw thread of the circular boss of disk seat bottom, and the effect of tympanic membrane provides the excessive pressure space when the valve plate inserts the valve plate groove.

Preferably, the utility model provides a pair of gate valve, wherein, disk seat lid bottom and top all are provided with the flange, the disk seat lid top is provided with the recess, the sealing member sets up in the upper end of disk seat lid top recess, the sliding sleeve passes through the bolt to set up in the lower extreme of disk seat lid top recess, through the fixed sealing member of sliding sleeve to be convenient for install and dismantle.

Preferably, the utility model provides a pair of gate valve, wherein, the external diameter that the valve rod upper end set up the external screw thread part is less than the external diameter of lower extreme portion, the external diameter of the lower extreme portion of valve rod is unanimous with the internal diameter of sealing member and sliding sleeve, the valve rod bottom is provided with the carousel, the top of valve rod lower extreme portion sets up the maximum distance of the lower surface of internal screw thread part to the valve body and is not more than the height of valve plate to avoid the valve plate to break away from the valve plate groove.

Preferably, the utility model provides a pair of gate valve, wherein, the connecting seat upper end is provided with the connecting seat lid through the bolt, the connecting seat upper surface is provided with the circular recess, the circular recess that the connecting seat upper surface set up cooperatees with the carousel, the valve rod of being convenient for and the installation and the dismantlement of connecting seat to the connecting seat can not follow the commentaries on classics when realizing that the valve rod rotates.

Preferably, the utility model provides a pair of gate valve, wherein, the thickness of valve plate and the thickness of the valve plate groove that the disk seat lower extreme set up are identical to guarantee the leakproofness.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses rational in infrastructure, be provided with the valve plate groove in the disk seat in order to guide the valve plate, the stability of valve plate improves greatly to improved closure performance, can not take place the condition of leaking, be equipped with the sealed lid of detachable elasticity simultaneously, with the problem of the long-pending mud of solution valve plate inslot.

(2) Because the valve plate can insert one end distance of valve plate groove when the in-process that closes, the sealed lid of elasticity still has an effect and is exactly, owing to be provided with the tympanic membrane, makes the valve plate be used for providing the excessive pressure space when inserting the valve plate groove, makes the valve plate can reach the bottom position to guarantee the closure.

(3) Reasonable valve rod structure links to each other through connecting seat and valve plate, makes valve rod and valve plate swing joint, realizes the rising and the decline of valve plate to through setting up sliding sleeve and sealing member, guaranteed valve rod stability, smooth nature and holistic leakproofness.

(4) Simple structure, convenient installation and disassembly, and convenient maintenance and part replacement.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of a valve seat according to the present invention;

fig. 3 is a schematic structural view of the elastic sealing cover of the present invention.

In the figure: the valve comprises a valve seat 1, a valve seat cover 2, a valve body 3, a valve rod 4, a valve plate 5, a valve plate groove 6, an elastic sealing cover 7, a limiting seat 8, a sealing member 9, a sliding sleeve 10, a hand disc 11, a connecting seat 12, a circular boss 13, a tympanic membrane 14, a rotary disc 15 and a connecting seat cover 16.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the embodiments of the present invention and the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a gate valve comprises a valve seat 1, a valve seat cover 2, a valve body 3, a valve rod 4 and a valve plate 5; a water inlet channel and a water outlet channel are respectively arranged on two sides of a valve seat 1, a valve plate groove 6 is arranged in the valve seat 1 and positioned between the water inlet channel and the water outlet channel, the bottom of the valve plate groove 6 at the lower end of the valve seat 1 is communicated with the outside of the valve seat 1, an elastic sealing cover 7 is further arranged on the upper surface of the valve seat 1, flanges are arranged on two sides and the top end of the valve seat 1, a circular boss 13 is arranged at the middle position of the bottom of the valve seat 1, the inside of the circular boss 13 at the bottom of the valve seat 1 is of a hollow structure and is communicated with the valve plate groove 6, an external thread is arranged on the outer side surface of the circular boss 13 at the bottom of the valve seat 1, a tympanic membrane 14 is arranged in the middle position of the elastic sealing cover 7, an internal thread is arranged on the inner side of the; the valve seat cover 2 is connected with the upper surface of the valve seat 1 through a bolt, a sealing element 9 and a sliding sleeve 10 are arranged inside the upper end of the valve seat cover 2, flanges are arranged at the bottom and the top of the valve seat cover 2, a groove is formed in the top end of the valve seat cover 2, the sealing element 9 is arranged at the upper end of the groove in the top end of the valve seat cover 2, and the sliding sleeve 10 is arranged at the lower end of the groove in the top end of the valve seat cover 2; the bottom of the valve body 3 is connected with the upper surface of the valve seat cover 2 through a bolt, and the inner side of the upper end of the valve body 3 is provided with an internal thread; the top end of the valve rod 4 is provided with a hand disc 11, the upper end part of the valve rod 4 is provided with an external thread, the valve rod 4 is arranged in the valve body 3 and the valve seat cover 2, the external thread of the upper end part of the valve rod 4 is matched with the internal thread of the inner side of the upper end of the valve body 3, the external diameter of the external thread part arranged at the upper end of the valve rod 4 is smaller than that of the lower end part, the external diameter of the lower end part of the valve rod 4 is consistent with the internal diameters of the sealing element 9 and the sliding sleeve 10, the bottom of the valve rod 4 is provided with a rotary disc 15, and the maximum distance from the top end of the lower end part; the top end of the valve plate 5 is provided with a connecting seat 12, the connecting seat 12 is movably connected with the bottom end of the valve rod 4, the upper end of the connecting seat 12 is provided with a connecting seat cover 16 through a bolt, the upper surface of the connecting seat 12 is provided with a circular groove, the circular groove arranged on the upper surface of the connecting seat 12 is matched with a rotary disc 15, and the thickness of the valve plate 5 is completely consistent with that of a valve plate groove 6 arranged at the lower end of the valve seat 1.

The installation method and the working principle are as follows: firstly, a sealing element 9 is arranged in a groove at the upper end of a valve seat cover 2, then a sliding sleeve 10 is inserted into the groove at the upper end of the valve seat cover 2 and fixed by bolts, a connecting seat cover 16 is sleeved on a valve rod 4, a rotary disc 15 at the bottom of the valve rod 4 is inserted into a circular groove at the upper surface of a connecting seat 12, the connecting seat cover 16 is connected with the connecting seat 12 by bolts, then the bottom of a valve body 3 is connected with the top of the valve seat cover 2 by bolts, the valve rod 4 penetrates through the valve seat cover 2 and the valve body 3 from bottom to top and is contacted with an internal thread part of the valve body 3, the valve rod 4 is rotated to penetrate through the valve body 3, then a hand disc 11 is arranged at the top end of the valve rod 4, the upper surface of the valve seat 1 is connected with the lower surface of the valve seat cover 2, in the connecting process, a valve plate 5 is inserted corresponding to a valve plate 6 of the valve seat 1, then the, the assembly is completed, the hand disc 11 is rotated to enable the valve rod 4 to ascend or descend, so that the valve plate 5 is driven to ascend or descend, the valve plate 5 is enabled to move in the valve plate groove 6 of the base, and the opening and closing of the gate valve are controlled; because the valve plate 5 can be inserted into one end of the valve plate groove 6 for a certain distance in the closing process, the elastic sealing cover 7 also has the function that the valve plate 5 is used for providing an overpressure space when being inserted into the valve plate groove 6 due to the arrangement of the tympanic membrane, so that the valve plate 5 can reach the lowest end position to ensure the closeness; the reasonable structure of the valve rod 4 is connected with the valve plate 5 through the connecting seat 12, so that the valve rod 4 is movably connected with the valve plate 5, the valve plate 5 is lifted and lowered, and the stability, the smoothness and the whole sealing performance of the valve rod 4 are ensured by arranging the sliding sleeve 10 and the sealing piece 9; simple structure, convenient installation and disassembly, and convenient maintenance and part replacement.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A gate valve, characterized in that: comprises a valve seat (1), a valve seat cover (2), a valve body (3), a valve rod (4) and a valve plate (5);

the water inlet valve comprises a valve seat (1), wherein a water inlet channel and a water outlet channel are respectively arranged on two sides of the valve seat (1), a valve plate groove (6) is formed in the valve seat (1) and located between the water inlet channel and the water outlet channel, the bottom of the valve plate groove (6) in the lower end of the valve seat (1) is communicated with the outside of the valve seat (1), an elastic sealing cover (7) is further arranged on the upper surface of the valve seat (1), and limiting seats (8) are respectively arranged on two sides of the valve seat (1) above the valve plate groove (6);

the valve seat cover (2) is connected with the upper surface of the valve seat (1) through a bolt, and a sealing element (9) and a sliding sleeve (10) are arranged inside the upper end of the valve seat cover (2);

the bottom of the valve body (3) is connected with the upper surface of the valve seat cover (2) through a bolt, and an internal thread is arranged on the inner side of the upper end of the valve body (3);

the valve rod (4), a hand disc (11) is arranged at the top end of the valve rod (4), external threads are arranged at the upper end part of the valve rod (4), the valve rod (4) is arranged inside the valve body (3) and the valve seat cover (2), and the external threads at the upper end part of the valve rod (4) are matched with the internal threads on the inner side of the upper end of the valve body (3);

the valve plate (5), valve plate (5) top is provided with connecting seat (12), connecting seat (12) and valve rod (4) bottom swing joint.

2. A gate valve according to claim 1, characterised in that: the improved valve seat is characterized in that flanges are arranged on two sides and the top end of the valve seat (1), a round boss (13) is arranged in the middle of the bottom of the valve seat (1), the inside of the round boss (13) at the bottom of the valve seat (1) is of a hollow structure and is communicated with the valve plate groove (6), and external threads are arranged on the outer side surface of the round boss (13) at the bottom of the valve seat (1).

3. A gate valve according to claim 1, characterised in that: the middle position of the elastic sealing cover (7) is provided with a tympanic membrane (14), the inner side of the elastic sealing cover (7) is provided with an internal thread, and the internal thread on the inner side of the elastic sealing cover (7) is matched with the external thread of the circular boss (13) at the bottom of the valve seat (1).

4. A gate valve according to claim 1, characterised in that: the sealing device is characterized in that flanges are arranged at the bottom and the top of the valve seat cover (2), a groove is formed in the top end of the valve seat cover (2), the sealing element (9) is arranged at the upper end of the groove in the top end of the valve seat cover (2), and the sliding sleeve (10) is arranged at the lower end of the groove in the top end of the valve seat cover (2) through a bolt.

5. A gate valve according to claim 1, characterised in that: the outer diameter that valve rod (4) upper end set up the external screw thread part is less than the external diameter of lower extreme portion, the external diameter of the lower extreme portion of valve rod (4) is unanimous with the internal diameter of sealing member (9) and sliding sleeve (10), valve rod (4) bottom is provided with carousel (15), the maximum distance of the top of valve rod (4) lower extreme portion to valve body (3) set up the lower surface of internal screw thread part is not more than the height of valve plate (5) to avoid valve plate (5) to break away from valve plate groove (6).

6. A gate valve according to claim 1, characterised in that: the upper end of the connecting base (12) is provided with a connecting base cover (16) through a bolt, the upper surface of the connecting base (12) is provided with a circular groove, and the circular groove arranged on the upper surface of the connecting base (12) is matched with the rotary table (15).

7. A gate valve according to claim 1, characterised in that: the thickness of the valve plate (5) is completely consistent with that of a valve plate groove (6) arranged at the lower end of the valve seat (1).