CN213064753U

CN213064753U - Guide type check valve

Info

Publication number: CN213064753U
Application number: CN202020575100.8U
Authority: CN
Inventors: 汪玲燕
Original assignee: Shanghai Power Plant Valve Co ltd
Current assignee: Shanghai Power Plant Valve Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2021-04-27
Anticipated expiration: 2030-04-17

Abstract

The utility model discloses a guide formula check valve, including the check valve body, the surface swing joint of check valve body has the bolt, the right side swing joint of head rod has the second connecting rod, the bottom fixedly connected with guide claw of second valve clack, the left side top fixedly connected with second gag lever post of first valve clack, the top surface fixedly connected with latch segment of second gag lever post, the bottom left side fixedly connected with disk seat of first gag lever post. This guide formula check valve is provided with the second gag lever post, and the staff contacts first gag lever post and second valve lamella through moving away the bottom of second gag lever post from the disk seat for first valve clack and second valve clack are on same straight line, and when the inside circulation of passageway, make first valve clack and second valve clack pass through the second connecting rod rebound, and the inner wall until contacting the passageway stops, and the inside flow of passageway is the biggest this moment, thereby has increased the practicality.

Description

Guide type check valve

Technical Field

The utility model relates to a check valve technical field specifically is a guide formula check valve.

Background

The check valve is a valve which is used for preventing medium from flowing backwards and is characterized in that the valve clack automatically opens and closes by means of medium flowing per se, the check valve belongs to an automatic valve, and is also called a check valve, a one-way valve, a backflow valve or an isolation valve, the movement mode of the valve clack is divided into a lifting type and a swing type, the lifting type check valve is similar to the structure of the stop valve, only a valve rod for driving the valve clack is lacked, and when the inlet pressure is larger than the sum of the weight of the valve cla. On the contrary, the valve is closed when the medium flows backwards, the main functions of the valve are to prevent the medium from flowing backwards, prevent the pump and the driving motor from reversing and discharge the container medium, and the stop valve are combined for use, thereby playing the role of safety isolation.

The check valve is operated automatically, under the action of fluid pressure flowing in one direction, the valve clack is opened, when fluid flows in the opposite direction, the valve clack is closed by the fluid pressure and the self weight of the valve clack and acts on the valve seat, so that the flow is cut off, the baffle plate of the check valve clack is often blocked and not tight when water returns, and the phenomenon of water leakage occurs, so that the true function of the check valve cannot be realized.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a guide formula check valve to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a guide type check valve comprises a check valve body, wherein a bolt is movably connected to the outer surface of the check valve body, a channel is formed in the check valve body, a first connecting seat is fixedly connected to the bottom of the left side in the channel, a first connecting rod is fixedly connected to the inside of the first connecting seat, a second connecting rod is movably connected to the right side of the first connecting rod, a third connecting rod is fixedly connected to the right end of the second connecting rod, a limiting plate is fixedly connected to the top of the front of the third connecting rod, a connecting block is movably connected to the front of the limiting plate, a second connecting seat is fixedly connected to the front of the connecting block, a first limiting rod is movably connected to the front of the second connecting seat, a first valve flap is fixedly connected to the bottom of the first limiting rod, a second valve flap is movably connected to the left side of the first valve flap, and a guide claw is, the left side top fixedly connected with second gag lever post of first valve clack, the top surface fixed connection of second gag lever post has the latch segment, the bottom left side fixedly connected with disk seat of first gag lever post.

Preferably, a guide claw is fixedly connected to the bottom of the first valve clack.

Preferably, the inner wall of the left side of the inner part of the check valve body is fixedly connected with a valve seat.

Preferably, the bottom of the connecting block is fixedly connected with a second valve clack.

Preferably, the outer surfaces of the first valve clack and the second valve clack are fixedly connected with a sealing ring.

Preferably, the bottom of the second connecting seat is fixedly connected with a first valve flap.

Preferably, the check valve body is divided into an upper half section and a lower half section, and the upper half section and the lower half section are connected through bolts.

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

(1) this guide formula check valve is provided with first gag lever post, moves away the back with first gag lever post from the second valve lamella when the staff, during the inside circulation of passageway, first valve clack is because the second gag lever post can't remove, first valve clack and stopper contact, and the inside flow ratio of passageway is smaller this moment, the size of effectual change flow, makes the device improve the practicality.

(2) This guide formula check valve is provided with the second gag lever post, and the staff contacts first gag lever post and second valve lamella through moving away the bottom of second gag lever post from the disk seat for first valve clack and second valve clack are on same straight line, and when the inside circulation of passageway, make first valve clack and second valve clack pass through the second connecting rod rebound, and the inner wall until contacting the passageway stops, and the inside flow of passageway is the biggest this moment, thereby has increased the practicality.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is a schematic top view of the first and second flaps taken in FIG. 1.

In the figure: 1 check valve body, 2 bolts, 3 passageways, 4 first connecting seats, 5 first connecting rods, 6 second connecting rods, 7 third connecting rods, 8 limiting plates, 9 connecting blocks, 10 second connecting seats, 11 first limiting rods, 12 first valve clacks, 13 second valve clacks, 14 guide claws, 15 second limiting rods, 16 locking blocks and 17 valve seats.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that 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 guide type check valve comprises a check valve body 1, wherein the check valve body 1 is divided into an upper section and a lower section, the upper section and the lower section are connected through bolts 2, the outer surface of the check valve body 1 is movably connected with the bolts 2, a channel 3 is arranged in the check valve body 1, the bottom of the left side of the interior of the channel 3 is fixedly connected with a first connecting seat 4, the interior of the first connecting seat 4 is fixedly connected with a first connecting rod 5, the right side of the first connecting rod 5 is movably connected with a second connecting rod 6, the right end of the second connecting rod 6 is fixedly connected with a third connecting rod 7, the front top of the third connecting rod 7 is fixedly connected with a limiting plate 8, the front of the limiting plate 8 is movably connected with a connecting block 9, the bottom of the connecting block 9 is fixedly connected with a second valve flap 13, the front of the connecting block 9 is fixedly connected with a second connecting, the front of the second connecting seat 10 is movably connected with a first limiting rod 11, when a worker moves the first limiting rod 11 away from the second valve flap 13 and the inside of the channel 3 circulates, the first valve flap 12 cannot move because of the second limiting rod 15, the first valve flap 13 is contacted with the limiting block 8, the flow inside the channel 3 is small, the flow is effectively changed, and the practicability of the device is improved, the bottom of the first limiting rod 11 is fixedly connected with the first valve flap 12, the bottom of the first valve flap 12 is fixedly connected with a guide claw 14, the left side of the first valve flap 12 is movably connected with the second valve flap 13, the outer surfaces of the first valve flap 12 and the second valve flap 13 are fixedly connected with a sealing ring, the bottom of the second valve flap 13 is fixedly connected with the guide claw 14, the top of the left side of the first valve flap 12 is fixedly connected with a second limiting rod 15, the worker moves the second limiting rod 15 away from the bottom of the valve seat 17, contact first gag lever post 11 and second valve lamella 13 for first valve lamella 12 and second valve lamella 13 are on the same straight line, when the inside circulation of passageway 3, make first valve lamella 12 and second valve lamella 13 through second connecting rod 6 rebound, the inner wall that contacts passageway 3 stops, the inside flow of passageway 3 this moment is the biggest, thereby the practicality has been increased, the top surface fixedly connected with latch segment 16 of second gag lever post 15, the bottom left side fixedly connected with disk seat 17 of first gag lever post 11, the inside left side inner wall fixedly connected with disk seat 17 of check valve body 1.

In use, in the guide type check valve, in use, the second limit rod 15 is moved away from the bottom of the valve seat 17, the first limit rod 11 is rotated to enable the first limit rod 11 to be in contact with the second valve flap 13, the first valve flap 12 and the second valve flap 13 are on the same straight line, when the channel 3 circulates inside, the first limit rod flows upwards from the bottom, the second connecting rod 6 and the third connecting rod 7 are in forest connection, the first valve flap 12 and the second valve flap 13 move upwards through the second connecting rod 6 until the first valve flap 12 and the second valve flap 13 are in contact with the inner wall of the channel 3 to stop, the flow inside the channel 3 is maximum at the moment, when the inside of the channel 3 reversely flows, the first valve flap 12 and the second valve flap 13 are driven to block the valve seat 17 under the pushing of fluid, the backwater path is closed, the inside of the channel 3 cannot flow downwards, the second limit rod 15 is abutted against the valve seat 17, the second limiting rod 15 is positioned through the locking block 16, so that the first valve clack 12 is connected with the second limiting rod 15, after the first limiting rod 11 is removed from the second valve clack 13, when the inside of the channel 3 circulates, the first valve clack 12 cannot move due to the second limiting rod 15, the first valve clack 13 is in contact with the limiting block 8, the flow inside the channel 3 is small at the moment, and the device can complete work.

To sum up, the guiding type check valve is provided with a first limiting rod 11, when a worker removes the first limiting rod 11 from a second valve flap 13 and the interior of a channel 3 circulates, the first valve flap 12 cannot move because of a second limiting rod 15, the first valve flap 13 contacts with a limiting block 8, the flow rate in the channel 3 is small, the flow rate is effectively changed, and the practicability of the device is improved, the second limiting rod 15 is provided, the worker removes the second limiting rod 15 from the bottom of a valve seat 17, contacts the first limiting rod 11 with the second valve flap 13, enables the first valve flap 12 and the second valve flap 13 to be on the same straight line, when the interior of the channel 3 circulates, enables the first valve flap 12 and the second valve flap 13 to move upwards through the second connecting rod 6 until contacting with the inner wall of the channel 3 to stop, and the flow rate in the channel 3 is maximum, thereby increasing the practicality.

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 pilot check valve, includes check valve body (1), its characterized in that: the outer surface of the check valve body (1) is movably connected with a bolt (2), a channel (3) is formed in the check valve body (1), a first connecting seat (4) is fixedly connected to the bottom of the left side of the inner portion of the channel (3), a first connecting rod (5) is fixedly connected to the inner portion of the first connecting seat (4), a second connecting rod (6) is movably connected to the right side of the first connecting rod (5), a third connecting rod (7) is fixedly connected to the right end of the second connecting rod (6), a limiting plate (8) is fixedly connected to the front top of the third connecting rod (7), a connecting block (9) is movably connected to the front of the limiting plate (8), a second connecting seat (10) is fixedly connected to the front of the connecting block (9), and a first limiting rod (11) is movably connected to the front of the second connecting seat (10), the utility model discloses a valve is characterized in that the first valve clack (12) of bottom fixedly connected with of first gag lever post (11), the left side swing joint of first valve clack (12) has second valve clack (13), the bottom fixedly connected with guide claw (14) of second valve clack (13), the left side top fixedly connected with second gag lever post (15) of first valve clack (12), the top surface fixedly connected with latch segment (16) of second gag lever post (15), the bottom left side fixedly connected with disk seat (17) of first gag lever post (11).

2. A pilot check valve in accordance with claim 1, wherein: the bottom of the first valve clack (12) is fixedly connected with a guide claw (14).

3. A pilot check valve in accordance with claim 1, wherein: the inner left side inner wall of the check valve body (1) is fixedly connected with a valve seat (17).

4. A pilot check valve in accordance with claim 1, wherein: the bottom of the connecting block (9) is fixedly connected with a second valve clack (13).

5. A pilot check valve in accordance with claim 1, wherein: and the outer surfaces of the first valve clack (12) and the second valve clack (13) are fixedly connected with a sealing ring.

6. A pilot check valve in accordance with claim 1, wherein: the bottom of the second connecting seat (10) is fixedly connected with a first valve clack (12).

7. A pilot check valve in accordance with claim 1, wherein: the check valve body (1) is divided into an upper half section and a lower half section, and the upper half section and the lower half section are connected through bolts (2).