CN210034553U

CN210034553U - Lift check valve clack

Info

Publication number: CN210034553U
Application number: CN201920799647.3U
Authority: CN
Inventors: 戴金平
Original assignee: Yongjia Beida Valve Accessories Co Ltd
Current assignee: Yongjia Beida Valve Accessories Co Ltd
Priority date: 2019-05-23
Filing date: 2019-05-23
Publication date: 2020-02-07
Anticipated expiration: 2029-05-23

Abstract

The utility model belongs to the technical field of the lift check valve technique and specifically relates to a lift check valve clack, including lift check valve body, a tip of lift check valve body's left side fixedly connected with medium inlet pipeline, another tip welding of medium inlet pipeline has first ring flange, a tip of lift check valve body's right side fixedly connected with medium outlet pipeline, another tip welding of medium outlet pipeline has the second ring flange, lift check valve body's tip is connected with lift check valve gap through bolt assembly connection, the bottom central point of lift check valve gap puts and is located the fixed valve rod sleeve that is equipped with in lift check valve body's the inner chamber, the telescopic inside of valve rod is equipped with the valve rod, on the valve rod and be located the telescopic inside of valve rod and be equipped with the spring. The utility model discloses a design sealing performance is strong, can effectually play and prevent the medium refluence, and the structure is more reasonable to the practicality is stronger.

Description

Lift check valve clack

Technical Field

The utility model relates to a lift check valve technical field specifically is a lift check valve clack.

Background

The lift check valve is a valve which automatically opens and closes a valve clack by medium flowing and is used for preventing medium from flowing backwards, and is also called a check valve, a one-way valve, a reverse flow valve and a back pressure valve, the check valve belongs to an automatic valve and mainly has the main functions of preventing medium from flowing backwards, preventing a pump and a driving motor from reversing and discharging container medium, the check valve can also be used for supplying pipelines for an auxiliary system with pressure possibly rising to exceed system pressure, the check valve can be mainly divided into a swing check valve (rotating according to gravity) and a lift check valve (moving along an axis), but the current lift check valve has unreasonable structural design and only adopts a simple cylindrical core body to be matched with a valve seat, so that the single matching mode is poor in sealing performance, the valve clack and the valve seat are easily caused to form a gap, and the medium flowing backwards jacks up the valve clack, the function of preventing the reverse flow of the medium is disabled.

To sum up, the utility model discloses a design a problem that existence was solved to over-and-under type check valve clack.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lift check valve clack 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 lifting check valve clack comprises a lifting check valve body, wherein a tip of a medium inlet pipeline is fixedly connected to the left side of the lifting check valve body, a first flange plate is welded to the other tip of the medium inlet pipeline, a tip of a medium outlet pipeline is fixedly connected to the right side of the lifting check valve body, a second flange plate is welded to the other tip of the medium outlet pipeline, the tip of the lifting check valve body is connected with a lifting check valve cover through a bolt assembly, a valve rod sleeve is fixedly arranged at the center of the bottom of the lifting check valve cover and in an inner cavity of the lifting check valve body, a valve rod is arranged in the valve rod sleeve, a spring is arranged on the valve rod and in the valve rod sleeve, the valve rod extends to one end of the valve rod sleeve and is fixedly connected with a clack, and a valve seat is arranged on, the fixed handing-over department that sets up medium inlet pipeline and medium outlet pipeline in the internal chamber of lift check valve of disk seat, the valve clack includes arc valve clack lid and valve clack core, a plurality of guiding gutters have been seted up to the fixed handing-over department that sets up in the internal chamber of lift check valve, the bottom central point of arc valve clack lid puts the fixed valve clack core that is equipped with, the outer wall of valve clack core cup joints on the disk seat, the bottom of arc valve clack lid is and encircle the fixed sealed piece that is equipped with in the outside of valve clack core, sealed piece sets up the inside of the fixed seal groove.

Preferably, the bolt assembly comprises a bolt, an elastic gasket and a nut, and the bolt in the bolt assembly is in threaded connection with the lifting check valve body and the lifting check valve cover respectively.

Preferably, a rubber sealing ring is fixedly arranged at the joint of the lifting check valve body and the lifting check valve cover.

Preferably, the valve flap is integrally formed and the guide groove is machined by a milling machine.

Preferably, the matching mode of the sealing block and the sealing groove is clearance fit and a sealing ring is fixedly arranged in the sealing groove.

Preferably, the matching mode of the valve clack core body and the valve seat is clearance fit.

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

1. the utility model discloses in, exert pressure for the valve clack through when the medium, make the valve clack core on the valve clack cooperate with the disk seat, make sealed piece cooperate with the seal groove, thereby carried out the secondary cooperation, and then carry out corresponding secondary seal effect, the guiding gutter has been seted up to the while at arc valve clack lid fixed, the area of contact of valve clack and medium has been increased, and then make the medium increase to the pressure of valve clack, thereby the leakproofness between valve clack and the disk seat has been guaranteed, traditional cylinder type core and disk seat have been solved to this process and have been cooperated, single cooperation mode like this, sealing performance is poor, lead to very easily causing valve clack and disk seat to cause the clearance, thereby the medium jack-up valve clack of refluence, make the problem that the effect that.

2. The utility model discloses in, it is more reasonable through design structure design, the structure is compacter, reaches sealing performance stronger, can effectually play the effect that prevents the medium refluence, therefore the practical function is stronger, more suits and uses widely on a large scale.

Drawings

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

FIG. 2 is a schematic view of the overall cross-sectional structure of the present invention;

FIG. 3 is an enlarged schematic view of the structure of the present invention A;

fig. 4 is a schematic view of the valve flap structure of the present invention.

In the figure: 1-lifting check valve body, 2-medium inlet pipeline, 3-first flange, 4-medium outlet pipeline, 5-second flange, 6-bolt assembly, 7-lifting check valve cover, 8-valve rod sleeve, 9-valve rod, 10-spring, 11-valve flap, 12-valve seat, 13-arc valve flap cover, 14-valve flap core body, 15-diversion groove, 16-sealing block and 17-sealing groove.

Detailed Description

The technical solution 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 only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution:

a lifting check valve clack comprises a lifting check valve body 1, one end part of a medium inlet pipeline 2 is fixedly connected to the left side of the lifting check valve body 1, a first flange plate 3 is welded to the other end part of the medium inlet pipeline 2, one end part of a medium outlet pipeline 4 is fixedly connected to the right side of the lifting check valve body 1, a second flange plate 5 is welded to the other end part of the medium outlet pipeline 4, the end part of the lifting check valve body 1 is connected with a lifting check valve cover 7 through a bolt assembly 6, a valve rod sleeve 8 is fixedly arranged at the central position of the bottom of the lifting check valve cover 7 and in an inner cavity of the lifting check valve body 1, a valve rod 9 is arranged in the valve rod sleeve 8, a spring 10 is arranged on the valve rod 9 and in the valve rod sleeve 8, a valve clack 11 is fixedly connected to one end of the valve rod 9 extending, disk seat 12 is fixed to be set up in the handing-over department of 1 inner chamber medium inlet pipe 2 of over-and-under type check valve body and medium outlet pipe way 4, valve clack 11 includes arc valve clack lid 13 and valve clack core 14, a plurality of guiding gutters 15 have been seted up to fixed on the terminal surface of arc valve clack lid 13, the bottom central point of arc valve clack lid 13 puts the fixed valve clack core 14 that is equipped with, the outer wall of valve clack core 14 cup joints on disk seat 12, the bottom of arc valve clack lid 13 and the fixed seal block 16 that is equipped with in the outside that encircles valve clack core 14, seal block 16 sets up the inside of.

The utility model discloses work flow: when a medium flows back from the medium outlet pipeline 4, the medium flows back to the valve clack 11, because the valve clack 11 consists of an arc valve clack cover 13 and a valve clack core body 14, the medium quickly flows back to the arc valve clack cover 13, pressure is generated to enable the valve clack core body 14 on the valve clack 11 to be matched with a valve seat 12, a sealing block 16 is matched with a sealing groove 17, so that secondary matching is performed, and a corresponding secondary sealing effect is performed, meanwhile, a diversion trench 15 is fixedly arranged on the arc valve clack cover 13, the contact area of the valve clack 11 and the medium is increased, so that the pressure of the medium on the valve clack 11 is increased, and the sealing property between the valve clack 11 and the valve seat 12 is ensured, the process solves the problem that the traditional cylindrical core body is matched with the valve seat, the single matching mode is poor in sealing property, and the backflow and the valve clack, the problem that the effect of preventing the medium refluence became invalid is made, and the sealing performance is strong, and the effect of preventing the medium from backflowing can be effectively played.

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. The utility model provides a lift check valve clack, includes lift check valve body (1), its characterized in that: the device is characterized in that one end of a medium inlet pipeline (2) is fixedly connected to the left side of the lifting check valve body (1), a first flange plate (3) is welded to the other end of the medium inlet pipeline (2), one end of a medium outlet pipeline (4) is fixedly connected to the right side of the lifting check valve body (1), a second flange plate (5) is welded to the other end of the medium outlet pipeline (4), the end of the lifting check valve body (1) is connected with a lifting check valve cover (7) through a bolt assembly (6), a valve rod sleeve (8) is fixedly arranged in an inner cavity of the lifting check valve body (1) and at the bottom center position of the lifting check valve cover (7), a valve rod (9) is arranged inside the valve rod sleeve (8), and a spring (10) is arranged on the valve rod (9) and inside the valve rod sleeve (8), one end of the valve rod (9) extending to the valve rod sleeve (8) is fixedly connected with a valve clack (11), the valve clack (11) is provided with a valve seat (12), the valve seat (12) is fixedly arranged at the joint of a medium inlet pipeline (2) and a medium outlet pipeline (4) in the inner cavity of the lifting check valve body (1), the valve flap (11) comprises an arc-shaped valve flap cover (13) and a valve flap core body (14), a plurality of diversion trenches (15) are fixedly arranged on the end surface of the arc valve clack cover (13), a valve clack core body (14) is fixedly arranged at the center of the bottom of the arc valve clack cover (13), the outer wall of the valve clack core body (14) is sleeved on the valve seat (12), a sealing block (16) is fixedly arranged at the bottom of the arc-shaped valve clack cover (13) and around the outer side of the valve clack core body (14), the sealing block (16) is arranged in a sealing groove (17) fixedly formed in the valve seat (12).

2. The poppet for a poppet check valve of claim 1, wherein: the bolt assembly (6) comprises a bolt, an elastic gasket and a nut, and the bolt in the bolt assembly (6) is in threaded connection with the lifting check valve body (1) and the lifting check valve cover (7) respectively.

3. The poppet for a poppet check valve of claim 1, wherein: and a rubber sealing ring is fixedly arranged at the joint of the lifting check valve body (1) and the lifting check valve cover (7).

4. The poppet for a poppet check valve of claim 1, wherein: the valve clack (11) is integrally formed and the diversion trench (15) is machined by a milling machine.

5. The poppet for a poppet check valve of claim 1, wherein: the sealing block (16) and the sealing groove (17) are in clearance fit in a matching mode, and a sealing ring is fixedly arranged in the sealing groove (17).

6. The poppet for a poppet check valve of claim 1, wherein: the valve clack core body (14) is in clearance fit with the valve seat (12).