CN211875184U

CN211875184U - Novel lifting check valve

Info

Publication number: CN211875184U
Application number: CN201922363624.0U
Authority: CN
Inventors: 玉金贵; 王立军; 陈跃; 朱明友; 李晓光; 杨桂宏; 康福新
Original assignee: Chengde High Middle Pressure Valve And Pipe Fittings Group Co ltd
Current assignee: Chengde Lianxing Petroleum Machinery Manufacturing Co ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-11-06
Anticipated expiration: 2029-12-25

Abstract

The utility model discloses a novel over-and-under type check valve, which comprises a valve body, the both sides of valve body are equipped with import and export respectively, be equipped with the valve clack that is used for control to open and close in the valve body, fixedly connected with traveller on the upper end lateral wall of valve clack, fixedly connected with go-between on the lateral wall of valve body upper end opening part, the go-between is the ring bodily form, the upper end of go-between is equipped with the valve gap, the sealed piece of fixedly connected with on the lower extreme lateral wall of valve gap, sealed piece is the cylinder bodily form. The utility model discloses improve the ordinary check valve among the prior art, greatly improved the leakproofness that valve gap and valve body are connected to avoided when the medium refluence valve is closed, the medium can upwards pass through the condition that the valve gap oozes, increased the closure dynamics under the condition of valve clack dead weight simultaneously, thereby avoided the condition that the valve that exists can't close when inlet pressure is too big.

Description

Novel lifting check valve

Technical Field

The utility model relates to a check valve technical field especially relates to a novel over-and-under type check valve.

Background

The check valve belongs to the automatic valve class, mainly used on the pipeline of medium one-way flow, only allow medium to flow to a direction, in order to prevent the accident, it is a common protective measure used for preventing the material from flowing backwards of chemical enterprises, its principle is that the opening and closing piece is the circular valve clack and produces the action to block the medium from flowing backwards by self weight and medium pressure, the valve clack motion mode is divided into lift type and swing type, the lift type check valve is similar to stop valve structure, only lack the valve stem that drives the valve clack, the medium flows into from the downside entrance point, flow out from the upside exit end, when the inlet pressure is greater than the valve clack weight and sum of its flow resistance, the valve is opened, otherwise, the valve is closed when the medium flows backwards, the shortcoming is that the.

Traditional lift check valve simple structure, the leakproofness that valve gap and valve body are connected is poor, and the valve is closed when the medium refluence, and the medium can upwards be come out through the valve gap seepage, and lift check valve closes the valve only through the dead weight of valve clack simultaneously, has the less problem of closed dynamics, and too big when inlet pressure can have the condition that the valve can't close, and we have proposed a neotype lift check valve for this reason, is used for solving above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the novel lift check valve that proposes, it has improved the ordinary check valve among the prior art, has greatly improved the leakproofness that valve gap and valve body are connected to avoided when medium refluence valve is closed, the medium can upwards pass through the condition that the valve gap leaked, increased the closure dynamics under the condition of valve clack dead weight simultaneously, thereby avoided the condition that the valve that exists can't be closed when inlet pressure is too big.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

the utility model provides a novel over-and-under type check valve, includes the valve body, the both sides of valve body are equipped with import and export respectively, be equipped with the valve clack that is used for control to open and close in the valve body, fixedly connected with traveller on the upper end lateral wall of valve clack, fixedly connected with go-between on the lateral wall of valve body upper end opening part, the go-between is the ring bodily form, the upper end of go-between is equipped with the valve gap, the sealed piece of fixedly connected with on the lower extreme lateral wall of valve gap, sealed piece is the cylinder bodily form, the inner wall sliding connection and the counterbalance of the inner wall of sealed piece and go-between and valve body upper end opening part, the valve gap links to each other with the go-between through a plurality of bolts.

The utility model has the advantages that: through set up the go-between on the valve body, the valve gap, sealed piece, bolt and sealing mechanism, the leakproofness that valve gap and valve body are connected has greatly been improved, thereby when medium refluence valve is closed, the medium can upwards pass through the condition that the valve gap leaks, simultaneously through setting up the spring between traveller and sealed piece, the elasticity of spring has been increased under the condition of valve clack dead weight, thereby the closure dynamics has been increased, and then the condition that the valve that has avoided when inlet pressure too big exists can't be closed.

Further: the bolts are arranged around the valve cover at equal intervals in the circumferential direction, and the lower ends of the bolts sequentially penetrate through the side walls of the valve cover and the connecting ring and are in threaded connection with nuts.

The beneficial effects of the further scheme are as follows: the valve cover is detachably fixed on the connecting ring by arranging a plurality of bolts and nuts.

Further: sealing mechanism is including setting up the first ring groove on the lateral wall of sealed piece, be equipped with first sealing washer in the first ring groove, first sealing washer cover is established on the lateral wall of sealed piece, the lateral wall of first sealing washer offsets with the inner wall of go-between, the inner wall dynamic seal who passes through first sealing washer and go-between is connected to sealed piece.

The beneficial effects of the further scheme are as follows: through setting up first sealing washer, sealed piece itself can play certain sealed effect, and first sealing washer has further improved the leakproofness.

Further: the valve cover is characterized in that a second annular groove is formed in the side wall of the lower end of the valve cover, a second sealing ring is arranged in the second annular groove, the side wall of the lower end of the second sealing ring abuts against the side wall of the upper end of the connecting ring, and the valve cover is connected with the side wall of the upper end of the connecting ring in a sealing mode through the second sealing ring.

The beneficial effects of the further scheme are as follows: through setting up the second sealing washer, the second sealing washer has further improved the leakproofness.

Further: the upper end side wall of the connecting ring is fixedly connected with a sealing ring, the sealing ring is arranged in a circular ring shape, the lower end side wall of the valve cover is provided with a third circular ring groove corresponding to the sealing ring in position, and the sealing ring is in sliding connection with and abuts against the inner wall of the third circular ring groove.

The beneficial effects of the further scheme are as follows: and the sealing ring is matched with the third circular groove, so that the sealing performance is further improved.

Further: the sliding chute corresponding to the sliding column is arranged on the side wall of the lower end of the sealing block, the sliding column is in sliding connection with and abuts against the inner wall of the sliding chute, the spring is arranged in the sliding chute, and the upper end and the lower end of the spring respectively abut against the inner wall of the upper end of the sliding chute and the side wall of the upper end of the sliding column.

The beneficial effects of the further scheme are as follows: through setting up spout and spring, its elasticity that has increased the spring under the condition of valve clack dead weight to increased the closure dynamics, and then avoided the condition that the valve that exists when inlet pressure is too big can't close, and can have more and need change the spring, during the change, only need dismantle the bolt, then upwards shift out the valve body with the valve gap together with sealed piece, alright change the spring this moment.

To sum up, the utility model discloses improve the ordinary check valve among the prior art, greatly improved the leakproofness that valve gap and valve body are connected to when having avoided medium refluence valve to close, the medium can upwards pass through the condition that the valve gap oozes, has increased the closure dynamics under the condition of valve clack dead weight simultaneously, thereby has avoided the condition that the valve that exists can't close when inlet pressure is too big.

Drawings

Fig. 1 is a schematic structural view of a novel lift check valve provided by the present invention;

fig. 2 is an enlarged view of a structure a in fig. 1.

In the figure: the valve comprises a valve body 1, a valve clack 2, a sliding column 3, a connecting ring 4, a valve cover 5, a sealing block 6, a bolt 7, a first sealing ring 8, a second sealing ring 9, a sealing ring 10, a sliding chute 11 and a spring 12.

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.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "front", "rear", "both ends", "one end", "the other end" and the like indicate the orientation or positional relationship based on the drawings, and are only for the convenience of description of the present invention and for the convenience of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1-2, a novel lift check valve comprises a valve body 1, wherein an inlet and an outlet are respectively arranged on two sides of the valve body 1, a valve clack 2 for controlling opening and closing is arranged in the valve body 1, a sliding column 3 is fixedly connected to the upper end side wall of the valve clack 2, a connecting ring 4 is fixedly connected to the side wall of the upper end opening of the valve body 1, the connecting ring 4 is in a circular ring shape, a valve cover 5 is arranged at the upper end of the connecting ring 4, a sealing block 6 is fixedly connected to the lower end side wall of the valve cover 5, the sealing block 6 is in a cylindrical shape, the sealing block 6 is in sliding connection with and supports against the inner wall of the connecting ring 4 and the inner wall of the upper end opening of the valve body 1, the valve cover 5 is connected with the connecting ring 4 through a plurality of bolts 7, a sealing mechanism is arranged between the valve cover 5 and the connecting, Sealing block 6, bolt 7 and sealing mechanism, the leakproofness that valve gap 5 and valve body 1 are connected has greatly been improved, thereby when having avoided closing as medium refluence valve, the medium can upwards pass through the condition that valve gap 5 oozes, simultaneously through setting up spring 12 between traveller 3 and sealing block 6, spring 12's elasticity has been increased under the condition of valve clack 2 dead weight, thereby the closure dynamics has been increased, and then the condition that the valve that has avoided when inlet pressure too big exists can't be closed.

Wherein, a plurality of bolts 7 are equidistantly arranged around 5 circumference of valve gap, the lower ends of a plurality of bolts 7 all run through the side walls of valve gap 5 and connecting ring 4 in turn and are in threaded connection with nuts, and the valve gap 5 is detachably fixed on the connecting ring 4 by arranging a plurality of bolts 7 and nuts.

Wherein, sealing mechanism is including setting up the first ring groove on the lateral wall of sealed piece 6, is equipped with first sealing washer 8 in the first ring groove, and 8 covers of first sealing washer are established on the lateral wall of sealed piece 6, and the lateral wall of first sealing washer 8 offsets with the inner wall of go-between 4, and sealed piece 6 is connected through the inner wall dynamic seal of first sealing washer 8 with go-between 4, through setting up first sealing washer 8, sealed piece 6 itself can play certain sealed effect, and first sealing washer 8 has further improved the leakproofness.

Wherein, be equipped with the second ring groove on the lower extreme lateral wall of valve gap 5, the second ring inslot is equipped with second sealing washer 9, and the lower extreme lateral wall of second sealing washer 9 offsets with the upper end lateral wall of go-between 4, and valve gap 5 is through the upper end lateral wall sealing connection of second sealing washer 9 with go-between 4, and through setting up second sealing washer 9, second sealing washer 9 has further improved the leakproofness.

Wherein, fixedly connected with sealing ring 10 on the upper end lateral wall of go-between 4, sealing ring 10 sets up to the ring bodily form, is equipped with the third ring channel corresponding with sealing ring 10 position on the lower extreme lateral wall of valve gap 5, and sealing ring 10 just offsets with the inner wall sliding connection of third ring channel, cooperatees through setting up sealing ring 10 and third ring channel, and sealing ring 10 has further improved the leakproofness.

Wherein, be equipped with on the lower extreme lateral wall of seal block 6 with 3 corresponding spouts 11 in position of traveller, traveller 3 and the inner wall sliding connection of spout 11 and offset, spring 12 sets up in spout 11, the upper and lower both ends of spring 12 offset with the upper end inner wall of spout 11 and the upper end lateral wall of traveller 3 respectively, through setting up spout 11 and spring 12, it has increased spring 12's elasticity under the condition of valve clack 2 dead weight, thereby the closure dynamics has been increased, and then the condition that the valve that exists can't be closed when inlet pressure is too big has been avoided, and can have more spring 12 of need to be changed, during the change, only need dismantle bolt 7, then upwards shift out valve body 1 with valve gap 5 together with seal block 6, alright change spring 12 this moment.

The utility model improves the common check valve in the prior art, the connecting ring 4, the valve cover 5, the sealing block 6, the bolt 7 and the sealing mechanism, greatly improves the sealing performance of the connection between the valve cover 5 and the valve body 1, the sealing block 6 can play a certain sealing function, the first sealing ring 8, the second sealing ring 9 and the sealing ring 10 are matched with the third circular groove, and the sealing performance is further improved, thereby avoiding the condition that the medium leaks upwards through the valve cover 5 when the medium backflow valve is closed, and simultaneously increasing the elasticity of the spring 12 under the self weight of the valve clack 2 by arranging the spring 12 between the sliding column 3 and the sealing block 6, thereby increasing the sealing strength, further avoiding the condition that the valve can not be closed when the inlet pressure is too large, and needing to replace the spring 12, during replacement, only needing to dismantle the bolt 7, and then moving the valve cover 5 together with the sealing block 6 upwards out of the valve body 1, the spring 12 can now be replaced.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A novel lifting check valve comprises a valve body (1) and is characterized in that a valve clack (2) for controlling opening and closing is arranged in the valve body (1), a sliding column (3) is fixedly connected on the side wall of the upper end of the valve clack (2), a connecting ring (4) is fixedly connected on the side wall of the opening of the upper end of the valve body (1), a valve cover (5) is arranged at the upper end of the connecting ring (4), a sealing block (6) is fixedly connected on the side wall of the lower end of the valve cover (5), the sealing block (6) is connected with and propped against the inner wall of the connecting ring (4) and the inner wall of the opening at the upper end of the valve body (1) in a sliding way, the valve cover (5) is connected with the connecting ring (4) through a plurality of bolts (7), a sealing mechanism is arranged between the valve cover (5) and the connecting ring (4), and a spring (12) is arranged between the sliding column (3) and the sealing block (6).

2. A novel lift check valve as claimed in claim 1, characterized in that a plurality of said bolts (7) are arranged circumferentially at equal intervals around the valve cover (5), and the lower ends of a plurality of said bolts (7) are threaded through the side walls of the valve cover (5) and the connection ring (4) in turn and are connected with nuts.

3. A new type of lift check valve as claimed in claim 1, characterized in that said sealing means comprises a first annular groove provided on the side wall of the sealing block (6), said first annular groove being provided with a first sealing ring (8), said first sealing ring (8) being fitted over the side wall of the sealing block (6), the side wall of said first sealing ring (8) abutting against the inner wall of the connection ring (4).

4. A novel lift check valve as claimed in claim 3, characterized in that the lower end side wall of the valve cover (5) is provided with a second annular groove, a second sealing ring (9) is arranged in the second annular groove, and the lower end side wall of the second sealing ring (9) abuts against the upper end side wall of the connecting ring (4).

5. A novel lifting check valve as claimed in claim 4, characterized in that a sealing ring (10) is fixedly connected to the upper end side wall of the connecting ring (4), the sealing ring (10) is configured to be a circular ring, a third circular groove corresponding to the position of the sealing ring (10) is provided on the lower end side wall of the valve cover (5), and the sealing ring (10) is slidably connected to and abutted against the inner wall of the third circular groove.

6. The novel lift check valve as claimed in claim 1, wherein a sliding groove (11) corresponding to the position of the sliding column (3) is formed in the lower end side wall of the sealing block (6), the sliding column (3) is slidably connected with and abuts against the inner wall of the sliding groove (11), the spring (12) is arranged in the sliding groove (11), and the upper end and the lower end of the spring (12) abut against the upper end inner wall of the sliding groove (11) and the upper end side wall of the sliding column (3) respectively.