CN111022678A

CN111022678A - Gate valve structure

Info

Publication number: CN111022678A
Application number: CN201911391092.XA
Authority: CN
Inventors: 应权
Original assignee: Jingmen Meizhongmei Valve Co ltd
Current assignee: Jingmen Meizhongmei Valve Co ltd
Priority date: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-04-17
Anticipated expiration: 2039-12-30
Also published as: CN111022678B

Abstract

A gate valve structure, the first copper ring (3) and the second copper ring (4) are respectively matched with the screw thread interface threads on the valve seat sealing surface at the inlet of a valve body (1) and the valve seat sealing surface at the outlet of the valve body (1), and a sealing ring (5) is pressed against the end part of the screw thread interface, the valve core (2) comprises a left valve plate (11), a left valve seat (12), a right valve plate (13) and a right valve seat (14), and the gate valve structure has the advantages that: 1. the copper ring through setting up spiro union formula can be demolishd fast, and is simple swift, efficient. 2. The traditional valve core structure is changed, so that the valve core has certain buffering capacity and better sealing effect.

Description

Gate valve structure

Technical Field

The invention relates to the field of gate valves, in particular to a gate valve structure.

Background

At present, 1, the inside copper ring of gate valve body structure that has now generally adopts rolling method or the adhesion of interior knot formula cooperation glue, and these two kinds of modes can not demolish fast under the state that the copper ring damaged, can only change the gate valve wholly, waste time and energy and take a lot of work. 2. The existing valve core is generally directly closed without any buffer process, and the copper ring is easily damaged after long-term use.

Disclosure of Invention

The present invention is directed to provide a gate valve structure for overcoming the above-mentioned drawbacks.

The invention comprises a power executing component, a valve body and a valve core, wherein the valve core is positioned in the valve body, the power executing component is in transmission connection with the valve core in the valve body, a valve seat sealing surface at an inlet of the valve body and a valve seat sealing surface at an outlet of the valve body are respectively provided with a threaded interface,

sealing ring placing grooves are arranged on the end faces of one ends of the first copper ring and the second copper ring,

a pair of sealing rings are respectively arranged in the sealing ring arranging grooves of the first copper ring and the second copper ring,

the first copper ring and the second copper ring are respectively matched with the thread interface threads on the valve seat sealing surface at the inlet of the valve body and the valve seat sealing surface at the outlet of the valve body, and the sealing ring is pressed against the end part of the thread interface to play a sealing role,

the valve core comprises a left valve plate, a left valve seat, a right valve plate and a right valve seat,

the left valve plate and the right valve plate are both provided with matched inclined planes,

the inclined plane of the left valve plate is provided with a strip-shaped groove which penetrates through the inclined plane,

the inclined plane of the right valve plate is provided with a bulge, the bulge is provided with a through hole penetrating through the bulge, the bulge is matched with the strip-shaped groove in shape,

the bulges are positioned in the strip-shaped grooves and move in the strip-shaped grooves,

the left valve plate and the right valve plate are respectively provided with a left inserted link and a right inserted link,

the left insert rod of the left valve plate passes through the strip-shaped groove and is inserted into the through hole at one end of the bulge,

the right inserted bar of the right valve plate is inserted into the through hole at the other end of the bulge.

The sealing ring is a sealing copper ring.

A limiting block is arranged in the valve body.

The inner surface of the copper ring is provided with a group of balance blocks which are uniformly distributed.

The contact surfaces of the left valve plate and the right valve plate with the copper ring are made of copper.

The length of the inserted bar of the left valve plate is larger than or equal to that of the inserted bar of the right valve plate.

And a shaft sleeve connected with the power output shaft is arranged on the right valve seat.

The end part of the left valve seat is provided with at least one contact bulge.

The invention has the advantages that: 1. the copper ring through setting up spiro union formula can be demolishd fast, and is simple swift, efficient. 2. The traditional valve core structure is changed, so that the valve core has certain buffering capacity and better sealing effect.

Description of the drawings

FIG. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic view of a valve element mounting position structure.

Fig. 3 is a schematic diagram of a copper ring installation position structure.

Fig. 4 is a schematic structural diagram of a mounting position of the copper seal ring.

Fig. 5 is a schematic side view of a copper ring.

Fig. 6 is a schematic view of the valve cartridge structure.

Fig. 7 is a schematic view of the valve element in an exploded state.

Fig. 8 is a sectional view structural schematic of the valve cartridge.

Fig. 9 is a schematic view of the initial state structure of the valve element.

Fig. 10 is a schematic structural view of the valve core in an operating state.

Fig. 11 is a structural schematic diagram of the working limit state of the valve core.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "upper", "lower", "inside", "outside", etc. are used for indicating the orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention usually place when using, the present invention is only used for convenience of description and simplification of the description, but does not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operate, and thus, the present invention should not be construed as being limited. Furthermore, the appearances of the terms "first," "second," and the like in the description of the present invention are only used for distinguishing between the descriptions and are not intended to indicate or imply relative importance.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed" and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-8, the invention comprises a power executing component, a valve body 1 and a valve core 2, wherein the valve core 2 is positioned in the valve body 1, the power executing component is in transmission connection with the valve core in the valve body 1, a valve seat sealing surface at an inlet of the valve body 1 and a valve seat sealing surface at an outlet of the valve body 1 are respectively provided with a threaded interface,

sealing ring placing grooves are arranged on the end faces of one ends of the first copper ring 3 and the second copper ring 4,

a pair of sealing rings 5 are respectively placed in the sealing ring placing grooves of the first copper ring 3 and the second copper ring 4,

first copper ring 3 and second copper ring 4 match with the screw thread interface screw thread on the sealed face of the disk seat of valve body 1 import department and the sealed face of the disk seat of valve body 1 exit respectively to make sealing ring 5 top in order to play sealed effect at the screw thread interface tip, can demolish simple and convenient fast through the copper ring that sets up the spiro union formula.

The valve core 2 comprises a left valve plate 11, a left valve seat 12, a right valve plate 13 and a right valve seat 14,

the left valve plate 11 and the right valve plate 13 are both provided with matched inclined planes,

the inclined plane of the left valve plate 11 is provided with a strip-shaped groove 111 penetrating through the inclined plane,

the inclined plane of the right valve plate 13 is provided with a bulge 131, the bulge 131 is provided with a through hole 132 penetrating through the bulge 131, the bulge 131 is matched with the strip-shaped groove 111 in shape,

the protrusion 131 is located in the strip-shaped groove 111, and moves in the strip-shaped groove 111,

the left valve plate 11 and the right valve plate 13 are respectively provided with a left insert rod 112 and a right insert rod 133,

the left insert rod 112 of the left valve plate 11 is inserted into the through hole 132 at one end of the protrusion 131 through the strip-shaped groove 111,

the right insert rod 133 of the right valve plate 13 is inserted into the other end through hole 132 of the boss 131.

The sealing ring 5 is a sealing copper ring. The sealing copper ring is adopted, so that the sealing copper ring made of copper is softer when contacting the threaded interface, and the sealing copper ring can be attached to the threaded interface.

A limiting block 9 is arranged in the valve body 1.

The inner surface of the copper ring is provided with a group of balance blocks which are uniformly distributed. The copper ring is convenient to mount when being mounted.

The contact surfaces of the left valve plate 11 and the right valve plate 13 and the copper ring are both made of copper. Mainly plays a role in reducing friction force.

The length of the inserted rod of the left valve plate 11 is larger than or equal to that of the inserted rod of the right valve plate 13. Since the distance between the end of the strip-shaped groove 111 of the left valve seat 12 and the protrusion 131 of the right valve seat 14 increases in the opened state of the assembly of the left valve seat 12 and the right valve seat 14, the length of the insert rod of the left valve plate 11 needs to be greater than or equal to the length of the insert rod of the right valve plate 13.

The right valve seat 14 is provided with a shaft sleeve connected with the power output shaft.

The end of the left valve seat 12 is provided with at least one contact protrusion.

Example 1: the working mode of the valve core is as follows:

as shown in fig. 9: in an initial state, the gate valve is in an open state, and two end surfaces of the left valve seat 12 and two end surfaces of the right valve seat 14 are in the same horizontal line, so that the left valve plate 11 and the right valve plate 13 are not spread;

as shown in fig. 10: in a working state, the gate valve is gradually closed, the power assembly drives the left valve seat 12 and the right valve seat 14 to move towards a closing direction, when the end part or the contact bulge of the left valve seat 12 contacts the inner wall of the valve body or the limiting block 9, the distance between two end faces of the left valve seat 12 and two end faces of the right valve seat 14 is gradually increased, the left valve plate 11 and the right valve plate 13 both move along the direction of the inclined planes of the opposite sides and are gradually propped open towards the inclined planes, and the left valve plate and the right valve plate respectively move towards the valve seat sealing surface at the inlet of the valve body 1;

as shown in fig. 11: under the complete closing state, the gate valve is closed, at the moment, the left valve seat 12 and the right valve seat 14 move relatively, so that the protrusion 131 of the right valve seat 14 moves in the strip-shaped groove 111 until the protrusion end surface 1311 of the protrusion 131 of the right valve seat 14 contacts with the groove inner end surface 1111 of the strip-shaped groove 111, at the moment, the distance between the left valve plate 11 and the right valve plate 13 is the maximum distance, the valve seat sealing surface at the inlet of the valve body 1 and the valve seat sealing surface at the outlet of the valve body 1 can be completely closed, and the effect of closing the gate valve is achieved.

The left valve plate 11 and the right valve plate 13 are arranged in a mirror image manner.

Claims

1. A gate valve structure comprises a power execution assembly, a valve body (1) and a valve core (2), wherein the valve core (2) is positioned in the valve body (1), the power execution assembly is in transmission connection with the valve core in the valve body (1), and the gate valve structure is characterized in that a valve seat sealing surface at an inlet of the valve body (1) and a valve seat sealing surface at an outlet of the valve body (1) are respectively provided with a threaded interface,

sealing ring placing grooves are arranged on the end faces of one ends of the first copper ring (3) and the second copper ring (4),

a pair of sealing rings (5) are respectively placed in the sealing ring placing grooves of the first copper ring (3) and the second copper ring (4),

the first copper ring (3) and the second copper ring (4) are respectively matched with the thread interface threads on the valve seat sealing surface at the inlet of the valve body (1) and the valve seat sealing surface at the outlet of the valve body (1), and the sealing ring (5) is pressed against the end part of the thread interface to play a sealing role,

the valve core (2) comprises a left valve plate (11), a left valve seat (12), a right valve plate (13) and a right valve seat (14),

the left valve plate (11) and the right valve plate (13) are both provided with matched inclined planes,

a strip-shaped groove (111) penetrating through the inclined plane is arranged on the inclined plane of the left valve plate (11),

a bulge (131) is arranged on the inclined plane of the right valve plate (13), a through hole (132) penetrating through the bulge (131) is arranged on the bulge (131), the bulge (131) is matched with the strip-shaped groove (111) in shape,

the bulge (131) is positioned in the strip-shaped groove (111) and moves in the strip-shaped groove (111),

the left valve plate (11) and the right valve plate (13) are respectively provided with a left inserted bar (112) and a right inserted bar (133),

a left insert rod (112) of the left valve plate (11) passes through the strip-shaped groove (111) and is inserted into a through hole (132) at one end of the bulge (131),

the right insert rod (133) of the right valve plate (13) is inserted into the other end through hole (132) on the bulge (131).

2. A gate valve structure according to claim 1, characterized in that the sealing ring (5) is a copper sealing ring.

3. A gate valve structure according to claim 1, characterized in that a stop (9) is arranged in the valve body (1).

4. The gate valve structure of claim 1, wherein the inner surface of the copper ring is provided with a set of evenly distributed weights.

5. A gate valve structure according to claim 1, characterized in that the contact surfaces of the left valve plate (11) and the right valve plate (13) and the copper ring are made of copper.

6. A gate valve construction according to claim 1, characterized in that the length of the insert rod of the left valve plate (11) is greater than or equal to the length of the insert rod of the right valve plate (13).

7. A gate valve construction according to claim 1, characterized in that the right valve seat (14) is provided with a sleeve for connection to a power take-off shaft.

8. A gate valve construction according to claim 1, characterized in that the end of the left valve seat (12) is provided with at least one contact projection.