CN115560107B

CN115560107B - Check valve

Info

Publication number: CN115560107B
Application number: CN202211355128.0A
Authority: CN
Inventors: 沈永忠
Original assignee: ZHENGFENG VALVE GROUP CO Ltd
Current assignee: ZHENGFENG VALVE GROUP CO Ltd
Priority date: 2022-11-01
Filing date: 2022-11-01
Publication date: 2023-06-06
Anticipated expiration: 2042-11-01
Also published as: CN115560107A

Abstract

The invention discloses a check valve, comprising: the check valve body comprises a valve body and a dynamic valve core, the valve body is provided with an inlet end and an outlet end, a valve cavity is formed in the valve body, the left end is the inlet end, the right end is the outlet end, the dynamic valve core is movably arranged in the valve cavity, the dynamic valve core comprises a valve cover and a dynamic guide cover, the valve cover faces the inlet end, and the dynamic guide cover is connected to the valve cover. The invention has the advantages of simple structure, reasonable design, safety, reliability and low comprehensive cost. The water supply and drainage pipe is suitable for water supply and drainage, fire protection, heat supply, central air conditioning and other pipeline systems to play a role in stopping return.

Description

Check valve

Technical Field

The invention relates to the technical field of valves, in particular to a check valve.

Background

The current check valves are mainly of several forms: swing, butterfly, lift, axial flow, etc. The axial flow type valve has two main types, namely a flow guiding body and a non-flow guiding body, wherein the flow guiding body with the flow guiding body is fixed, and the flow guiding body with the flow guiding body is large in flow resistance, and has a certain flow guiding effect on the medium. Accordingly, there is a need for a check valve that at least partially addresses the problems of the prior art.

Disclosure of Invention

In the summary, a series of concepts in a simplified form are introduced, which will be further described in detail in the detailed description. The summary of the invention is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The invention belongs to an axial flow type check valve which is provided with a dynamic flow guide cover, can play a good role in guiding flow of a medium under any opening degree of a valve clack, ensures that a medium flow field in a valve cavity is stable and quiet, and can reduce resistance loss to the greatest extent. The invention has the advantages of simple structure, reasonable design, safety, reliability and low comprehensive cost. The water supply and drainage pipe is suitable for water supply and drainage, fire protection, heat supply, central air conditioning and other pipeline systems to play a role in stopping return.

To at least partially solve the above problems, the present invention provides a check valve comprising: the check valve body comprises a valve body and a dynamic valve core, wherein the valve body is provided with an inlet end and an outlet end, a valve cavity is formed in the valve body, the dynamic valve core comprises a valve cover and a dynamic guide cover, the valve cover is movably arranged in the valve cavity and faces the inlet end, and the dynamic guide cover is connected to the valve cover.

According to the check valve provided by the embodiment of the invention, the support is arranged in the outlet end, and the valve cover is movably arranged on the support.

According to the check valve disclosed by the embodiment of the invention, the support comprises the frame sleeve, a plurality of inner hack levers and the shaft seat, the frame sleeve is arranged in the outlet end, the shaft seat is arranged in the frame sleeve, the inner hack levers are uniformly distributed between the frame sleeve and the shaft seat, the shaft seat is provided with the valve shaft, and the valve cover is movably arranged on the valve shaft.

According to the check valve provided by the embodiment of the invention, the side, facing the outlet end, of the valve cover is provided with the sliding sleeve, the sliding sleeve is internally provided with the shaft sleeve, and the shaft sleeve is in sliding connection with the valve shaft.

According to the check valve disclosed by the embodiment of the invention, the valve shaft is provided with the spring body, and the spring body is propped between the shaft sleeve and the shaft seat.

According to the check valve provided by the embodiment of the invention, the middle part of the valve cover is bent towards the inlet end, the sealing ring is arranged on the valve cover close to the outer periphery of the valve cover, the inner convex ring facing the valve cover is arranged on the inner periphery of the inlet end, and the inner convex ring corresponds to the sealing ring.

According to the check valve provided by the embodiment of the invention, the end part of the valve body is connected with a pipeline, the bottom of the pipeline is provided with a vertical supporting module, the vertical supporting module comprises a base plate, a manual supporting frame, a manual telescopic rod group and an auxiliary fixing module, the manual supporting frame is arranged on the base plate, the manual telescopic rod group is arranged at the upper end of the manual supporting frame, the upper end of the manual telescopic rod group is provided with an upper claw pushing mechanism, and the auxiliary fixing module is arranged on the upper claw pushing mechanism and is used for fixing the pipeline.

According to the check valve disclosed by the embodiment of the invention, the auxiliary fixing module comprises an auxiliary seat plate, the auxiliary seat plate is arranged at the upper end of the upper top claw mechanism, two fixing pressing seats are arranged on the auxiliary seat plate, each fixing pressing seat comprises a U-shaped bearing seat and an upper pressing rotating plate, the U-shaped bearing seat is arranged on the auxiliary seat plate, one end of each upper pressing rotating plate is rotatably connected with one upper end of each U-shaped bearing seat, the other end of each upper pressing rotating plate is provided with an extension plate, the lower end of each extension plate is provided with an inner folding claw body, the other upper end of each U-shaped bearing seat is provided with a transverse plate, the outer end of each transverse plate is provided with an outer folding claw body, the upper end of each transverse plate is provided with a first fixing ring, the lower surface of each upper pressing rotating plate is provided with a second fixing ring corresponding to the first fixing ring, the middle part of the lower surface of each upper pressing rotating plate is provided with two inner folding plates, each U-shaped bearing seat is internally provided with a first bearing plate and a second bearing plate, the other extension plate is arranged at the other, the other upper end of each upper pressing rotating plate is provided with an extension plate, the other is provided with a transverse arc body, the other is arranged at the lower end of each transverse arc body is provided with a plurality of handles, and the first bearing plates are respectively provided with a plurality of holding arcs.

According to the check valve disclosed by the embodiment of the invention, the manual support frame comprises a first vertical rod, a second vertical rod, a first spring and a spring cap, wherein the first vertical rod is arranged on the base plate, a first notch groove is formed in the upper end of the first vertical rod, two vertical sliding grooves are formed in the side wall of the first vertical rod, a second notch groove is formed in the lower end of the second vertical rod, the first spring is sleeved on the first vertical rod and abuts against the spring cap, the spring cap is arranged on the first vertical rod in a sliding mode and sleeved on the second vertical rod in a sleeved mode, a sliding sleeve is arranged in the spring cap, a limiting convex plate corresponding to the vertical sliding grooves is arranged on the sliding sleeve, and the manual telescopic rod group is arranged at the upper end of the second vertical rod.

According to the check valve provided by the embodiment of the invention, the manual telescopic rod group comprises an upper conical seat, an outer sleeve body, an inner limit sleeve and an inner telescopic group, wherein the upper conical seat is arranged at the upper end of the manual support frame, the outer sleeve body and the inner limit sleeve are arranged on the upper conical seat, the inner limit sleeve is positioned in the outer sleeve body, the inner telescopic group is partially arranged in the inner limit sleeve, the inner telescopic group comprises the inner telescopic sleeve, an inner telescopic core rod and a second spring, the lower end of the inner telescopic sleeve penetrates through the upper end of the outer sleeve body and extends into the inner limit sleeve, the inner telescopic core rod penetrates through the inner telescopic sleeve, the second spring is positioned at the upper end of the inner telescopic sleeve and abuts against the rod head of the inner telescopic core rod, the lower end of the inner telescopic core rod is provided with an inner disc body, a plurality of limit claws are uniformly distributed on the inner disc body, the limit claws are movably arranged in the limit protruding rods in a penetrating manner, and correspond to any two limit claws on the inner wall of the inner sleeve, and the limit claws are correspondingly provided with any upper vertical limit claws through any upper limit grooves.

Compared with the prior art, the invention at least comprises the following beneficial effects:

the invention provides a check valve, which comprises a check valve body, wherein the check valve body comprises a valve body and a dynamic valve core, the valve body is provided with an inlet end and an outlet end, a valve cavity is arranged in the check valve body, the left end is the inlet end, the right end is the outlet end, the dynamic valve core is movably arranged in the valve cavity, the dynamic valve core comprises a valve cover and a dynamic guide cover, the valve cover faces the inlet end, and the valve cover is connected with the dynamic guide cover, so that when a medium enters the valve body from the inlet end, the dynamic valve core is pushed, and then the dynamic guide cover and the inlet end are opened, so that the check valve can play a good guide effect on the medium under any opening degree of the valve clack through the designed dynamic guide cover, the medium flow field in the valve cavity is stable and quiet, and the resistance loss can be reduced to the maximum extent. The invention has the advantages of simple structure, reasonable design, safety, reliability and low comprehensive cost. The water supply and drainage pipe is suitable for water supply and drainage, fire protection, heat supply, central air conditioning and other pipeline systems to play a role in stopping return.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a side view of the structure of the bracket of the present invention.

Fig. 3 is a schematic structural view of a stent according to the present invention.

Fig. 4 is a schematic structural view of a valve body according to the present invention.

Fig. 5 is a schematic structural view of a pipeline according to the present invention.

Fig. 6 is a schematic structural diagram of an auxiliary fixing module in the present invention.

Fig. 7 is a schematic diagram of an internal structure of the auxiliary fixing module according to the present invention.

Fig. 8 is a schematic structural view of the auxiliary fixing module for fixing a pipe with a larger diameter according to the present invention.

Fig. 9 is a schematic view of a vertical support module according to the present invention.

Fig. 10 is a schematic view of a part of the structure of the vertical support module according to the present invention.

FIG. 11 is a schematic view of a part of the structure of the spring cap of the present invention.

Fig. 12 is a schematic structural view of a second vertical rod according to the present invention.

Fig. 13 is a schematic structural view of an outer casing according to the present invention.

Fig. 14 is a schematic structural view of an inner telescopic unit according to the present invention.

Fig. 15 is a schematic view of a part of the structure of the inner telescopic unit in the present invention.

Fig. 16 is a schematic structural view of an inner telescopic core rod according to the present invention.

Fig. 17 is a schematic view of the structure of the upper jaw mechanism in the present invention.

Detailed Description

The present invention is described in further detail below with reference to the drawings and examples to enable those skilled in the art to practice the invention by referring to the description.

It will be understood that terms, such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.

As shown in fig. 1-4, the present invention provides a check valve comprising: the check valve comprises a check valve body 100, wherein the check valve body 100 comprises a valve body 1 and a dynamic valve core 2, the valve body 1 is provided with an inlet end 11 and an outlet end 12, a valve cavity 13 is arranged in the check valve body, the dynamic valve core 2 comprises a valve cover 21 and a dynamic flow guide cover 22, the valve cover 21 is movably arranged in the valve cavity 13 and faces the inlet end 11, and the dynamic flow guide cover 22 is connected to the valve cover 21.

The working principle of the technical scheme is as follows: the present invention provides a check valve comprising: the check valve body 100 comprises a valve body 1 and a dynamic valve core 2, wherein the valve body 1 is provided with an inlet end 11 and an outlet end 12, a valve cavity 13 is arranged in the valve body, the left end is the inlet end 11, the right end is the outlet end 12, the dynamic valve core 2 is movably arranged in the valve cavity 13, the dynamic valve core 2 comprises a valve cover 21 and a dynamic flow guide cover 22, the valve cover 21 faces the inlet end 11, and the dynamic flow guide cover 22 is connected to the valve cover 21, so that when a medium enters the valve body 1 from the inlet end 11, the dynamic valve core 2 is pushed, and then the dynamic flow guide cover 22 and the inlet end 11 are opened, so that the check valve can play a good role in guiding the medium under any opening degree of a valve clack through the designed dynamic flow guide cover, and the flow field of the medium in the valve cavity is stable and quiet, and the resistance loss can be reduced to the maximum extent. The invention has the advantages of simple structure, reasonable design, safety, reliability and low comprehensive cost. The water supply and drainage pipe is suitable for water supply and drainage, fire protection, heat supply, central air conditioning and other pipeline systems to play a role in stopping return.

Further, a bracket 3 is installed in the outlet end 12, the valve cover 21 is movably installed on the bracket 3, the bracket 3 includes a frame sleeve 31, a plurality of inner frame rods 32 and a shaft seat 33, specifically, the frame sleeve 31 is installed in the outlet end 12, the shaft seat 33 is located in the frame sleeve 31, the plurality of inner frame rods 32 are uniformly distributed between the frame sleeve 31 and the shaft seat 33, so that the bracket 3 can support the valve cover 21, a valve shaft 34 is installed on the shaft seat 33, the valve cover 21 is movably installed on the valve shaft 34, the movable support of the valve cover 21 is realized through the design of the bracket 3, and a good flow guiding effect of the dynamic flow guiding cover 22 on a medium can be realized under any opening degree of a valve clack.

Further, the sliding sleeve 26 is installed on the side of the valve cover 21 facing the outlet end 12, and the shaft sleeve 23 is installed in the sliding sleeve 26, so that when the valve cover 21 is pressed by a medium, the valve cover 21 drives the sliding sleeve 26 to move toward the outlet end 12, and the shaft sleeve 23 then slidingly moves toward the outlet end 12 along the valve shaft 34, so as to specifically realize the movement of the valve cover 21 to drive the dynamic air guide sleeve 22.

The valve shaft 34 is provided with a spring body 35, and the spring body 35 abuts against the gap between the shaft sleeve 23 and the shaft seat 33, so when the medium stops entering the valve cavity 13 from the inlet end 11, or when the pressure of the medium entering the valve cavity 13 from the inlet end 11 to the valve cover 21 is smaller than the elastic force of the spring body 35, the spring body 35 pushes the shaft sleeve 23 to the inlet end 11 under the action of the spring body 35, and the shaft sleeve 23 moves slidingly along the valve shaft 34 to the inlet end 11, so that the valve cover 21 is attached to the inner side of the inlet end 11, and the effect of non-return flow is achieved.

In order to increase the conductivity of the valve cover 21, the part of the middle part of the valve cover 21 facing the inlet end 11 is designed to be bent, and a sealing ring 24 is arranged on the part of the valve cover 21 close to the outer periphery of the valve cover, correspondingly, an inner convex ring 25 facing the valve cover 21 is designed on the inner periphery of the inlet end 11, so that the inner convex ring 25 corresponds to the sealing ring 24, and when the sealing ring 24 is attached to the inner convex ring 25, a better sealing effect, such as backflow of a medium through the valve cover 21, is achieved.

As shown in fig. 5 to 17, in one embodiment, when the valve body 1 is connected to the pipe 30, the end of the pipe 30 needs to be mounted to the end of the valve body 1 by an operator, and thus the operator cannot shake the valve body, and the pipe 30 is prevented from being skewed when being mounted. It is necessary to fix the duct 30 by using the vertical support module 40 to prevent the duct 30 from being skewed.

Accordingly, the present invention provides a specific structure of the vertical support module 40, and the vertical support module 40 of the structure includes a base plate 41, a manual support frame 42, a manual telescopic rod group 43, and an auxiliary fixing module 46;

as shown in fig. 5-8, in order to further increase the fixing capability of the vertical support module 40 to pipes 30 with different diameters, an auxiliary fixing module 46 is further designed in the vertical support module 40, the auxiliary fixing module 46 comprises an auxiliary seat plate 47 and two fixing pressing parts 48, specifically, the auxiliary seat plate 47 is installed at the upper end of the upper claw mechanism 45 and is fixed with the upper claw mechanism 45, wherein four circumferential swinging claw rods 451 are arranged in the upper claw mechanism 45, fixing hollow grooves 452 are formed on the swinging claw rods 451, and then the auxiliary seat plate 47 can be fixed on the four circumferential swinging claw rods 451 through fixing bolts penetrating in the fixing hollow grooves 452;

the two fixing and pressing parts 48 are installed on the auxiliary seat plate 47, the pipe 30 is fixed by the two fixing and pressing parts 48, specifically, the fixing and pressing parts 48 comprise a U-shaped bearing seat 481 and an upper pressing rotating plate 482, the U-shaped bearing seat 481 is installed on the auxiliary seat plate 47, wherein an operator opens the upper pressing rotating plate 482 from the U-shaped bearing seat 481 in use, and because one end of the upper pressing rotating plate 482 is rotationally connected with one upper end of the U-shaped bearing seat 481, the operator firstly dismantles a second fixing ring 488 arranged on the lower surface of the upper pressing rotating plate 482 from a first fixing ring 487 at the upper end of a transverse plate 485, the second fixing ring 488 is installed on the first fixing ring 487 through a transverse screw, then an extension plate 483 at the other end of the upper pressing rotating plate 482 is outwards moved, so that an inner folding claw 484 on the extension plate 483 is separated from an outer folding claw 486 of the transverse plate 485 at the other upper end of the U-shaped bearing seat 481, and then the upper pressing rotating plate 482 is rotated, and then the pipe 481 is placed on the other upper end of the U-shaped bearing seat 481, and then the pipe 30 is fixed and then fixed on the U-shaped bearing seat 481;

further, in order to fix the pipes 30 with different diameters, two inner folding plates 489 are installed at the middle part of the lower surface of the upper pressing rotating plate 482, the inner folding plates 489 are in an inverted 7 shape, the two inner folding plates 489 can be pressed to the upper part of the pipe 30, a first bearing arc plate 490 and a second bearing arc plate 491 are correspondingly installed in the U-shaped bearing seat 481, specifically, the first bearing arc plate 490 is installed in the U-shaped bearing seat 481 through a first flexible fin 495, the second bearing arc plate 491 is installed in the U-shaped bearing seat 481 through a second flexible fin 496, the bottom of the pipe 30 is supported through the first bearing arc plate 490 and the second bearing arc plate 491, wherein, a first hand-holding body 492 is arranged at the lower end of the first bearing arc plate 490, a second hand-holding body 493 is arranged at the lower end of the second bearing arc plate 491, and the first hand-holding body 492 and the second hand-holding body 493 are buckled with each other, and a plurality of anti-skid grooves 494 are respectively arranged on the inner surfaces of the first bearing arc plate 490 and the second bearing arc plate 490, so that the pipes 30 are further fixed;

when the diameter of the pipe 30 is larger, the pipe 30 can press the inner folding plate 489, the first gripper 492 and the second bearing arc plate 491, so that the inner folding plate 489 and the first gripper 492 deform and adhere to the inner surfaces of the pressing rotating plate 482 and the U-shaped bearing base 481. Through the design of the structure, the auxiliary fixing module 46 can adapt to pipelines 30 with different diameters, so that the use cost is reduced, and the universality is improved.

As shown in fig. 9 to 17, specifically, in order to facilitate the installation and carrying of the operator and the adjustment of the height of the entire vertical support module 40, a manual support frame 42 is installed on the base plate 41, wherein the manual support frame 42 includes a first vertical rod 421, a second vertical rod 422, a first spring 423 and a spring cap 424, the first vertical rod 421 is installed on the base plate 41, a first notch groove 425 is formed at the upper end of the first vertical rod 421, two vertical sliding grooves 426 are formed on the side wall, and the first spring 423 and the spring cap 424 are installed on the first vertical rod 421;

specifically, the first spring 423 is used for propping against the spring cap 424, so that the spring cap 424 is slidably mounted on the first vertical rod 421 and sleeved on the second vertical rod 422, wherein a sliding sleeve 428 is arranged in the spring cap 424, two limiting convex plates 429 are further mounted in the sliding sleeve 428, and further the limiting convex plates 429 are mounted in the vertical sliding groove 426, so that when an operator can pull the spring cap 424 downwards, the limiting convex plates 429 move downwards along the vertical sliding groove 426, and the spring cap 424 can compress the first spring 423 downwards, and then the spring cap 424 moves below the first vertical rod 421, and further the operator can conveniently fasten the second notch groove 427 at the lower end of the second vertical rod 422 with the first notch groove 425 at the upper end of the first vertical rod 421, and further the second vertical rod 422 is conveniently mounted on the first vertical rod 421;

then when the operator releases the spring cap 424, the first spring 423 pushes up against the spring cap 424, so that the spring cap 424 moves upwards under the action of the first spring 423, the spring cap 424 sleeves the second vertical rod 422 inside, and the second vertical rod 422 cannot be separated from the first vertical rod 421;

further, a manual telescopic rod group 43 is installed at the upper end of the manual support frame 42, specifically, the manual telescopic rod group 43 is installed at the upper end of the second vertical rod 422 and abuts against the pipe 30. Here, the manual telescopic rod set 43 includes an upper cone seat 431, an outer sleeve 432, an inner limiting sleeve 433 and an inner telescopic set 434, specifically, the upper cone seat 431 is installed at the upper end of the second vertical rod 422, the outer sleeve 432 and the inner limiting sleeve 433 are installed on the upper cone seat 431, and the inner limiting sleeve 433 is located inside the outer sleeve 432, so that an operator can press the inner telescopic set 434 to make the inner telescopic set 434 move up and down in the outer sleeve 432, and then adjust the height of the whole vertical support module 40, and the upper claw mechanism 45 is installed at the upper end of the manual telescopic rod set 43, and the auxiliary fixing module 46 is installed on the upper claw mechanism 45 to fix the pipe 30, so that the operator can conveniently carry the vertical support module 40 for use in a plurality of scenes.

Further, the present invention provides a specific structure of the inner telescopic group 434, and the height of the vertical support module 40 can be adjusted by the inner telescopic group 434 of the structure, so that the vertical support module 40 can be suitable for use in multiple situations.

The inner telescopic set 434 comprises an inner telescopic sleeve 435, an inner telescopic core rod 436 and a second spring 437, wherein the lower end sleeve of the inner telescopic sleeve 435 passes through the upper end of the outer sleeve 432 and extends into the inner limit sleeve 433, and the inner telescopic core rod 436 passes through the inner telescopic sleeve 435, wherein the second spring 437 is positioned at the upper end of the inner telescopic sleeve 435 and abuts against the rod head 443 of the inner telescopic core rod 436, so when an operator presses the inner telescopic core rod 436, the inner telescopic core rod 436 downwards presses the second spring 437, the lower part of the inner telescopic core rod 436 moves downwards relative to the lower end of the inner telescopic sleeve 435, the inner disc 438 at the lower end of the inner telescopic core rod 436 drives a plurality of limit claws 439 hinged with the inner disc 438 to move downwards, and as the limit claws 439 are provided with inner hollow grooves 444, the limit claws 439 are arranged in the limit convex rod 440 in a penetrating manner, the limit claws 439 slide along the inner limit rods of the limit convex rod 440 through the inner hollow grooves, the outer ends of the limit claws 439 are separated from the limit grooves 441 on the inner walls of the inner limit sleeve 433, the lower part of the limit claws 441 are separated from the lower part of the limit grooves 45, the lower part of the limit claws 45, and the inner telescopic sleeve 435 can be vertically pressed by the two vertical flanges 442, so that the inner telescopic sleeve 442 can be vertically arranged at the two sides of the inner sleeve 442 or can be vertically pressed by the inner telescopic sleeve 442, and the inner telescopic sleeve can be vertically or vertically arranged by the inner telescopic sleeve 442.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

Although embodiments of the present invention have been disclosed above, it is not limited to the details and embodiments shown and described, it is well suited to various fields of use for which the invention would be readily apparent to those skilled in the art, and accordingly, the invention is not limited to the specific details and illustrations shown and described herein, without departing from the general concepts defined in the claims and their equivalents.

Claims

1. A check valve, comprising: the check valve comprises a check valve body and a dynamic valve core, wherein the check valve body is provided with an inlet end and an outlet end, a valve cavity is formed in the check valve body, the dynamic valve core comprises a valve cover and a dynamic guide cover, the valve cover is movably arranged in the valve cavity and faces to the inlet end, and the dynamic guide cover is connected to the valve cover;

the end part of the valve body is connected with a pipeline, a vertical supporting module is arranged at the bottom of the pipeline and comprises a base plate, a manual supporting frame, a manual telescopic rod group and an auxiliary fixing module, the manual supporting frame is arranged on the base plate, the manual telescopic rod group is arranged at the upper end of the manual supporting frame, an upper claw pushing mechanism is arranged at the upper end of the manual telescopic rod group, and the auxiliary fixing module is arranged on the upper claw pushing mechanism and is used for fixing the pipeline;

the auxiliary fixing module comprises an auxiliary seat plate, the auxiliary seat plate is arranged at the upper end of the upper top claw mechanism, two fixing pressing seat parts are arranged on the auxiliary seat plate, each fixing pressing seat part comprises a U-shaped bearing seat and an upper pressing rotating plate, each U-shaped bearing seat is arranged on the auxiliary seat plate, one end of each upper pressing rotating plate is rotatably connected with one upper end of each U-shaped bearing seat, the other end of each upper pressing rotating plate is provided with an extension plate, the lower end of each extension plate is provided with an inner folding claw body, the other upper end of each U-shaped bearing seat is provided with a transverse plate, the outer end of each transverse plate is provided with an outer folding claw body, the upper end of each transverse plate is provided with a first fixing ring, the lower surface of each upper pressing rotating plate is provided with a second fixing ring corresponding to the first fixing ring, the middle part of the lower surface of each upper pressing rotating plate is provided with two inner folding pressing plates, each U-shaped bearing seat is internally provided with a first bearing arc plate and a second bearing arc plate, the lower end of each first bearing plate is provided with a second bearing arc body, and the lower end of each first bearing plate is provided with a second bearing arc body and a plurality of inner arc bodies.

2. The check valve of claim 1 wherein a bracket is disposed within said outlet end, said valve cover being movably disposed on said bracket.

3. The check valve of claim 2, wherein the bracket comprises a housing, a plurality of inner frame rods and an axle seat, the housing is disposed in the outlet end, the axle seat is disposed in the housing, the plurality of inner frame rods are uniformly distributed between the housing and the axle seat, a valve shaft is disposed on the axle seat, and the valve cover is movably disposed on the valve shaft.

4. A check valve according to claim 3 wherein a sliding sleeve is provided on a side of the valve cap facing the outlet end, a sleeve being provided in the sliding sleeve, the sleeve being slidably connected to the valve shaft.

5. The check valve of claim 4, wherein a spring body is disposed on the valve shaft, the spring body abutting between the bushing and the shaft seat.

6. The check valve of claim 1, wherein a middle portion of the valve cover is curved toward the inlet end, and a sealing ring is provided on the valve cover near a periphery thereof, and an inner bead toward the valve cover is provided on an inner periphery of the inlet end, the inner bead corresponding to the sealing ring.

7. The check valve of claim 1, wherein the manual support frame comprises a first vertical rod, a second vertical rod, a first spring and a spring cap, the first vertical rod is arranged on the base plate, a first notch groove is formed in the upper end of the first vertical rod, two vertical sliding grooves are formed in the side wall of the first vertical rod, a second notch groove is formed in the lower end of the second vertical rod, the first spring is sleeved on the first vertical rod and abuts against the spring cap, the spring cap is arranged on the first vertical rod in a sliding mode and sleeved on the second vertical rod in a sleeving mode, a sliding sleeve is arranged in the spring cap, a limiting convex plate corresponding to the vertical sliding grooves is arranged on the sliding sleeve, and the manual telescopic rod group is arranged at the upper end of the second vertical rod.

8. The check valve according to claim 1, wherein the manual telescopic rod group comprises an upper conical seat, an outer sleeve body, an inner limit sleeve and an inner telescopic group, the upper conical seat is arranged at the upper end of the manual supporting frame, the outer sleeve body and the inner limit sleeve are arranged on the upper conical seat, the inner limit sleeve is positioned in the outer sleeve body, the inner telescopic group is partially arranged in the inner limit sleeve, the inner telescopic group comprises an inner telescopic sleeve, an inner telescopic core rod and a second spring, the lower end of the inner telescopic sleeve is sleeved on the upper end of the outer sleeve body and extends into the inner limit sleeve, the inner telescopic core rod is sleeved in the inner telescopic sleeve, the second spring is positioned at the upper end of the inner telescopic sleeve and abuts against the rod head of the inner telescopic core rod, the lower end of the inner telescopic core rod is provided with an inner disc body, a plurality of limit claws are uniformly distributed on the inner disc body, the lower end of the inner telescopic sleeve and the limit convex rod corresponding to the limit claws are partially arranged in the inner limit sleeve, the limit claws are movably sleeved in the limit rod and correspond to any two limit grooves on the inner wall of the inner sleeve.