阅读说明：本技术 一种液压单向阀 (Hydraulic one-way valve ) 是由 王剑飞 倪建平 张取 于 2021-08-21 设计创作，主要内容包括：本发明提供一种液压单向阀,包括：圆形阀壳,所述圆形阀壳的外侧面左右两侧对称设置有输入接口和输出接口,所述输入接口和所述输出接口对向设置；圆形阀芯,嵌合设置于所述圆形阀壳的内侧,所述圆形阀芯的中间横向设置有中心连通管,所述中心连通管靠近所述输入接口的一端设置有输入端口。本发明通过圆形阀壳内部嵌合转动的圆形阀芯控制输入接口与输出接口的导通,圆形阀芯中的圆形连通腔中嵌合设置的半圆密封块通过平直连通端口的限制只能进行单向转动,以实现单向导通的功能,并且圆形阀芯整体可以进行转动,以调节其上设置的输入端口、输出端口与圆形阀壳上设置的输入接口、输出接口之间的相对位置,进行可以调节阀体整体导通与否。(The present invention provides a hydraulic check valve, comprising: the round valve shell is provided with an input interface and an output interface at the left side and the right side of the outer side surface of the round valve shell symmetrically, and the input interface and the output interface are arranged oppositely; the circular valve core is embedded in the inner side of the circular valve casing, a central communicating pipe is transversely arranged in the middle of the circular valve core, and an input port is formed in one end, close to the input port, of the central communicating pipe. The invention controls the conduction of the input interface and the output interface through the circular valve core which is embedded and rotated in the circular valve shell, the semicircular sealing block which is embedded and arranged in the circular communication cavity in the circular valve core can only rotate in one direction through the limitation of the straight communication port so as to realize the function of one-way conduction, and the whole circular valve core can rotate so as to adjust the relative positions of the input port and the output port which are arranged on the circular valve core and the input interface and the output interface which are arranged on the circular valve shell, so that the whole conduction of the valve body can be adjusted.)

1. A hydraulic check valve, comprising:

the round valve shell is provided with an input interface and an output interface at the left side and the right side of the outer side surface of the round valve shell symmetrically, and the input interface and the output interface are arranged oppositely;

the circular valve core is embedded and arranged on the inner side of the circular valve shell, a central communicating pipe is transversely arranged in the middle of the circular valve core, an input port is arranged at one end, close to the input interface, of the central communicating pipe, and an output port is arranged at one end, close to the output interface, of the central communicating pipe;

the circular communication cavity is arranged in the middle of the central communication pipe, a straight communication port is arranged on the front side of the circular communication cavity, the port of the straight communication port is a plane and is positioned on the same plane with the vertical central line of the circular communication cavity, an arc-shaped communication port is arranged on the rear side of the circular communication cavity, and the port of the arc-shaped communication port is an arc surface and is positioned on the same arc surface with the arc-shaped side surface of the circular communication cavity;

semicircle sealing block, gomphosis set up in the inboard in circular intercommunication chamber, the front side of semicircle sealing block is provided with straight sealing surface, the rear side of semicircle sealing block is provided with the arc sealing surface, straight sealing surface with laminate each other between the port plane of straight intercommunication port, the arc sealing surface with the arc side in circular intercommunication chamber with laminate each other between the port cambered surface of arc intercommunication port, the center department of semicircle sealing block is provided with central pivot, the centre of semicircle sealing block is provided with reset spring.

2. The hydraulic check valve of claim 1, wherein the circular valve element and the circular valve housing are sized to fit together, and wherein an outer side surface of the circular valve element and an inner side surface of the circular valve housing abut against each other.

3. The hydraulic check valve as claimed in claim 1, wherein a driving rotation shaft is provided at a center of the circular valve core, and the circular valve core is rotatably connected to the circular valve housing through the driving rotation shaft.

4. The hydraulic check valve according to claim 1, wherein a pressure relief interface is provided between the input interface and the output interface, and the pressure relief interface is provided at a ninety degree angle to both the input interface and the output interface.

5. The hydraulic check valve according to claim 4, wherein an arc-shaped communication groove is formed in the middle of the outer arc surface of the circular valve core, and the arc-shaped communication groove is arranged right opposite to the pressure relief port.

6. The hydraulic check valve as claimed in claim 1, wherein a horizontal balance tube is disposed above the circular valve housing, a horizontal connecting rod is disposed inside the horizontal balance tube, balance pistons are symmetrically disposed at left and right ends of the horizontal connecting rod, the horizontal connecting rod is slidably connected with the horizontal balance tube through the balance pistons in a nested manner, the balance pistons and the horizontal balance tube are matched with each other in size, a driving rack is disposed in the middle of the horizontal connecting rod, and a hollow tooth section is disposed at the center of the driving rack.

7. The hydraulic check valve according to claim 6, wherein an input communicating pipe is disposed outside the input port, an output communicating pipe is disposed outside the output port, the input port is connected to the front end of the horizontal balancing pipe through the input communicating pipe, and the output port is connected to the rear end of the horizontal balancing pipe through the output communicating pipe.

8. The hydraulic one-way valve according to claim 6, wherein a vertical sleeve is arranged below the center of the horizontal balance pipe, the driving rotating shaft is nested and rotatably arranged on the inner side of the vertical sleeve, an adjusting gear is arranged at the top end of the driving rotating shaft, and the adjusting gear and the driving rack are meshed with each other to form a transmission structure.

9. The hydraulic check valve according to claim 1, wherein a connecting seal cylinder is disposed between the input communication pipe and the output communication pipe, a seal valve stem is slidably disposed inside the connecting seal cylinder, and a linkage sliding rod is disposed on a side of the seal valve stem close to a vertical centerline of the circular valve housing.

10. The hydraulic check valve according to claim 9, wherein an arc-shaped linkage block is arranged at the top end of the central rotating shaft, a linkage adjusting disc is arranged above the central rotating shaft, an arc-shaped linkage groove is arranged in the middle of the linkage adjusting disc, the central rotating shaft passes through the arc-shaped linkage block and the arc-shaped linkage groove and is connected with the linkage adjusting disc in an embedded mode, linkage rotating shafts are symmetrically arranged on the outer sides of the linkage adjusting disc, driving connecting rods are arranged on the outer sides of the linkage rotating shafts, the inner ends of the driving connecting rods are connected with the linkage adjusting disc in a rotating mode through the linkage rotating shafts, connecting rod rotating shafts are arranged at the outer ends of the driving connecting rods, and the outer ends of the driving connecting rods are connected with the linkage sliding rods in a rotating mode through the connecting rod rotating shafts.

Technical Field

One or more embodiments of the present disclosure relate to the field of check valves, and more particularly, to a hydraulic check valve.

Background

The check valve is commonly called as a check valve, fluid can only flow along the water inlet, and the medium at the water outlet cannot flow back. Check valves are also known as check valves or check valves. For preventing reverse flow of oil in hydraulic systems or for preventing reverse flow of compressed air in pneumatic systems. The one-way valve has a straight-through type and a right-angle type. The straight-through one-way valve is installed on the pipeline by threaded connection. The right-angle check valve has three forms of threaded connection, plate connection and flange connection.

The applicant finds that the existing hydraulic check valve generally adopts an axial direction type spring movable plug structure to realize the function of one-way passing, but the structure can only seal the input end and cannot simultaneously seal the input and the output, the integral sealing effect is poor, and the existing check valve is difficult to flexibly control and adjust according to the pressure of the input and output pipelines connected with the existing check valve.

Disclosure of Invention

In view of the above, an object of one or more embodiments of the present disclosure is to provide a hydraulic check valve, so as to solve the problems that the existing hydraulic check valve generally adopts an axial spring movable plug structure to achieve a one-way passing function, but such structure can only seal an input end, cannot simultaneously maintain the sealing of the input and the output, has a poor overall sealing effect, and is difficult to flexibly control and adjust according to the pressure of an input pipeline and an output pipeline connected to the existing check valve.

In view of the above, one or more embodiments of the present disclosure provide a hydraulic check valve, including:

the round valve shell is provided with an input interface and an output interface at the left side and the right side of the outer side surface of the round valve shell symmetrically, and the input interface and the output interface are arranged oppositely;

the circular valve core is embedded and arranged on the inner side of the circular valve shell, a central communicating pipe is transversely arranged in the middle of the circular valve core, an input port is arranged at one end, close to the input interface, of the central communicating pipe, and an output port is arranged at one end, close to the output interface, of the central communicating pipe;

the circular communication cavity is arranged in the middle of the central communication pipe, a straight communication port is arranged on the front side of the circular communication cavity, the port of the straight communication port is a plane and is positioned on the same plane with the vertical central line of the circular communication cavity, an arc-shaped communication port is arranged on the rear side of the circular communication cavity, and the port of the arc-shaped communication port is an arc surface and is positioned on the same arc surface with the arc-shaped side surface of the circular communication cavity;

semicircle sealing block, gomphosis set up in the inboard in circular intercommunication chamber, the front side of semicircle sealing block is provided with straight sealing surface, the rear side of semicircle sealing block is provided with the arc sealing surface, straight sealing surface with laminate each other between the port plane of straight intercommunication port, the arc sealing surface with the arc side in circular intercommunication chamber with laminate each other between the port cambered surface of arc intercommunication port, the center department of semicircle sealing block is provided with central pivot, the centre of semicircle sealing block is provided with reset spring.

In some optional embodiments, the circular valve core and the circular valve casing are matched in size, and the outer side surface of the circular valve core and the inner side surface of the circular valve casing are attached to each other.

In some optional embodiments, a driving rotating shaft is arranged at the center of the circular valve core, and the circular valve core is rotatably connected with the circular valve casing through the driving rotating shaft.

In some optional embodiments, a pressure relief interface is arranged between the input interface and the output interface, and the pressure relief interface and the input interface and the output interface are arranged at an included angle of ninety degrees.

In some optional embodiments, an arc-shaped communication groove is formed in the middle of the arc surface of the outer side of the circular valve core, and the arc-shaped communication groove is arranged right opposite to the pressure relief interface.

In some optional embodiments, a horizontal balance pipe is arranged above the circular valve casing, a horizontal connecting rod is arranged inside the horizontal balance pipe, balance pistons are symmetrically arranged at the left end and the right end of the horizontal connecting rod, the horizontal connecting rod is in nested sliding connection with the horizontal balance pipe through the balance pistons, the balance pistons and the horizontal balance pipe are matched with each other in size, a driving rack is arranged in the middle of the horizontal connecting rod, and a hollow tooth section is arranged in the center of the driving rack.

In some optional embodiments, an input communicating pipe is arranged outside the input interface, an output communicating pipe is arranged outside the output interface, the input interface is connected with the front end of the horizontal balancing pipe through the input communicating pipe, and the output interface is connected with the rear end of the horizontal balancing pipe through the output communicating pipe.

In some optional embodiments, a vertical sleeve is arranged below the center of the horizontal balance pipe, the driving rotating shaft is nested and rotatably arranged on the inner side of the vertical sleeve, an adjusting gear is arranged at the top end of the driving rotating shaft, and the adjusting gear and the driving rack are meshed with each other to form a transmission structure.

In some optional embodiments, a connecting sealing cylinder is arranged between the input communicating pipe and the output communicating pipe, a sealing valve core column is nested and slidably arranged inside the connecting sealing cylinder, and a linkage sliding rod is arranged on one side, close to a vertical center line of the circular valve casing, of the sealing valve core column.

In some optional embodiments, the top of center pivot is provided with arc linkage piece, the top of center pivot is provided with the linkage adjustment dish, the centre of linkage adjustment dish is provided with the arc linkage groove, the center pivot passes through arc linkage piece with the arc linkage groove with the linkage adjustment dish gomphosis is connected, the outside symmetry of linkage adjustment dish is provided with the linkage pivot, the outside of linkage pivot is provided with the drive connecting rod, the inner of drive connecting rod passes through the linkage pivot with the linkage adjustment dish rotates to be connected, the outer end of drive connecting rod is provided with the connecting rod pivot, the outer end of drive connecting rod passes through the connecting rod pivot with the linkage slide bar rotates to be connected.

As can be seen from the above, in the hydraulic check valve provided in one or more embodiments of the present disclosure, the circular valve element that is rotatably embedded inside the circular valve housing controls the connection between the input port and the output port, the semicircular sealing block is embedded in the circular communication cavity of the circular valve element, the semicircular sealing block can only rotate in one direction by the restriction of the straight communication port to achieve the function of one-way connection, and simultaneously the input and output ports can be simultaneously sealed in a closed state, and the circular valve element can rotate as a whole to adjust the relative positions between the input port and the output port provided thereon and the input port and the output port provided on the circular valve housing, so as to adjust the connection of the valve body as a whole, and the rotation of the circular valve element is controlled by the horizontal balance tube, and the two ends of the horizontal balance tube are respectively connected to the input port and the output port, thereby the pressure differential through both sides alright with the position of its inside balanced piston of control and horizontal connecting rod, and then through the turned angle of drive rack, adjusting gear and drive pivot coordinated control circular case to pressure differential through input and output is adjusted the valve body in a flexible way, uses convenient and fast more.

Drawings

In order to more clearly illustrate one or more embodiments of the present disclosure or technical solutions in related arts, the drawings used in the description of the embodiments or related arts will be briefly described below, it is obvious that the drawings in the following description are only examples of one or more embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic front view of one or more embodiments of the present disclosure;

FIG. 2 is a schematic backside structure of one or more embodiments of the present disclosure;

fig. 3 is a schematic cross-sectional view of a circular valve housing according to one or more embodiments of the present disclosure;

FIG. 4 is an exploded view of a circular valve housing according to one or more embodiments of the present disclosure;

fig. 5 is a schematic view of the internal structure of a circular valve housing in a pressure relief state according to one or more embodiments of the present disclosure;

FIG. 6 is a schematic diagram of a circular valve cartridge according to one or more embodiments of the present disclosure;

FIG. 7 is a schematic diagram of the internal structure of a circular valve cartridge according to one or more embodiments of the present disclosure;

FIG. 8 is a schematic diagram of a horizontal balance tube according to one or more embodiments of the present disclosure;

FIG. 9 is a schematic diagram of a connecting sealing cartridge according to one or more embodiments of the present disclosure;

fig. 10 is a schematic structural diagram of a linkage adjustment disc according to one or more embodiments of the present disclosure.

Detailed Description

To make the objects, aspects and advantages of one or more embodiments of the present disclosure more apparent, one or more embodiments of the present disclosure are described in further detail below with reference to specific embodiments.

It is to be understood that unless otherwise defined, technical or scientific terms used herein with respect to one or more embodiments of the present disclosure shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar language in one or more embodiments of the present description is not intended to imply any order, quantity, or importance, but rather the intention is to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In one or more embodiments of the present disclosure, a hydraulic check valve includes:

the valve comprises a circular valve casing 1, wherein an input interface 101 and an output interface 102 are symmetrically arranged on the left side and the right side of the outer side surface of the circular valve casing 1, and the input interface 101 and the output interface 102 are oppositely arranged;

the circular valve core 2 is embedded and arranged on the inner side of the circular valve casing 1, a central communication pipe 201 is transversely arranged in the middle of the circular valve core 2, an input port 202 is arranged at one end, close to the input interface 101, of the central communication pipe 201, and an output port 203 is arranged at one end, close to the output interface 102, of the central communication pipe 201;

the circular communication cavity 3 is arranged in the middle of the central communication pipe 201, a straight communication port 301 is arranged on the front side of the circular communication cavity 3, a port of the straight communication port 301 is a plane and is positioned on the same plane with the vertical center line of the circular communication cavity 3, an arc-shaped communication port 302 is arranged on the rear side of the circular communication cavity 3, and a port of the arc-shaped communication port 302 is an arc surface and is positioned on the same arc-shaped surface with the arc-shaped side surface of the circular communication cavity 3;

semicircle sealing block 4, the gomphosis sets up in the inboard in circular intercommunication chamber 3, the front side of semicircle sealing block 4 is provided with straight sealing surface 401, the rear side of semicircle sealing block 4 is provided with arc sealing surface 402, laminate each other between straight sealing surface 401 and the port plane of straight intercommunication port 301, laminate each other between arc sealing surface 402 and the arc side in circular intercommunication chamber 3 and the port cambered surface of arc intercommunication port 302, the center department of semicircle sealing block 4 is provided with central pivot 403, the centre of semicircle sealing block 4 is provided with reset spring 404.

Referring to fig. 1 to 10, as an embodiment of the present invention, a hydraulic check valve includes: the valve comprises a circular valve casing 1, wherein an input interface 101 and an output interface 102 are symmetrically arranged on the left side and the right side of the outer side surface of the circular valve casing 1, and the input interface 101 and the output interface 102 are oppositely arranged; an input interface 101 and an output interface 102 are symmetrically arranged on a circular valve casing 1 of the one-way valve, the input interface 101 and the output interface 102 can be respectively connected with an input pipeline and an output pipeline, a circular valve core 2 is embedded and arranged on the inner side of the circular valve casing 1, a central communicating pipe 201 is transversely arranged in the middle of the circular valve core 2, an input port 202 is arranged at one end, close to the input interface 101, of the central communicating pipe 201, and an output port 203 is arranged at one end, close to the output interface 102, of the central communicating pipe 201; the circular valve casing 1 is provided with a circular valve core 2 in an embedded manner, an input port 202 and an output port 203 which are oppositely arranged on the circular valve core 2 can be respectively connected to the circular valve casing 1 and symmetrically provided with an input interface 101 and an output interface 102, so that liquid can be conveyed to a central communicating pipe 201 of the circular valve core 2 through the input interface 101 and the input port 202 and further conveyed to the output port 203 and the output interface 102 through the central communicating pipe 201; a circular communication chamber 3 disposed in the middle of the central communication pipe 201, a straight communication port 301 being disposed at a front side of the circular communication chamber 3; a semicircular sealing block 4 which is embedded and arranged at the inner side of the circular communication cavity 3, a circular communication cavity 3 is arranged in the middle of a central communicating pipe 201 of the circular valve core 2, a straight communicating port 301 and an arc communicating port 302 are oppositely arranged in the circular communication cavity 3, the port of the straight communicating port 301 is a plane and is positioned on the same plane with the vertical central line of the circular communication cavity 3, an arc communicating port 302 is arranged at the rear side of the circular communication cavity 3, the port of the arc communicating port 302 is an arc surface and is positioned on the same arc surface with the arc side surface of the circular communication cavity 3, so that liquid can be input into the circular communication cavity 3 through the arc communicating port 302 and then output from the arc communicating port 302, meanwhile, the semicircular sealing block 4 is also arranged in the circular communication cavity 3, the semicircular sealing block 4 is of a semicircular structure, a flat sealing surface 401 is arranged at the front side of the semicircular sealing block 4, and an arc sealing surface 402 is arranged at the rear side of the semicircular sealing block 4, the straight closed surface 401 and the port plane of the straight communication port 301 are mutually attached, the arc closed surface 402 and the arc side surface of the circular communication cavity 3 and the port arc surface of the arc communication port 302 are mutually attached, the center of the semicircular sealing block 4 is provided with a central rotating shaft 403, the middle of the semicircular sealing block 4 is provided with a return spring 404, so that the semicircular sealing block 4 can fill the half side of the circular communication cavity 3, and the straight communication port 301 and the arc communication port 302 are respectively blocked by the straight closed surface 401 and the arc closed surface 402 to keep the tightness of the straight communication port 301 and the arc communication port 302, and the straight communication port 301 and the arc communication port 302 are both positioned at the half side of the straight closed surface 401 and the arc closed surface 402, the axial center line of the central rotating shaft 403 is staggered, when liquid is input from the straight communication port 301, the upper half side of the straight closed surface 401 of the sealing block 4 can be pushed by the pressure of the liquid, and then promote semicircle sealed piece 4 whole and rotate along central pivot 403, thereby can make semicircle sealed piece 4 let out straight intercommunication port 301 and arc intercommunication port 302, and then make straight intercommunication port 301 and arc intercommunication port 302 switch on, and when liquid was by arc intercommunication port 302 reverse flow, semicircle sealed piece 4 just loses the impetus and promotes through reset spring 404 and reset along central pivot 403 reverse rotation, with sealed straight intercommunication port 301 and arc intercommunication port 302, and arc intercommunication port 302 promotes the arc confining surface 402 of semicircle sealed piece 4 when, because the straight confining surface 401 of semicircle sealed piece 4 has already supported straight intercommunication port 301, so semicircle sealed piece 4 is by spacing unable rotation, and then the closure and the one-way trafficability characteristic of having kept the check valve, the check valve is more nimble reliable during whole work.

Referring to fig. 1 to 10, optionally, the size of the circular valve element 2 of the check valve is matched with that of the circular valve housing 1, the outer side surface of the circular valve element 2 is matched with that of the circular valve housing 1, the center of the circular valve element 2 is provided with a driving rotating shaft 205, the circular valve element 2 is rotatably connected with the circular valve housing 1 through the driving rotating shaft 205, so that the circular valve element 2 can rotate through the driving rotating shaft 205 to adjust the positions of the input port 202 and the output port 203 arranged on both sides thereof, and further can adjust the relative positions between the input port 202 and the output port 203 and the input port 101 and the output port 102 arranged on the circular valve housing 1, and further adjust the overall communication efficiency, so as to adjust the passing efficiency of the check valve, when the input port 202 and the input port 101 or the output port 203 and the output port 102 are completely on the same axis, the passing efficiency of the one-way valve can be kept to the maximum, the input port 202 and the input interface 101 or the output port 203 and the output interface 102 are staggered mutually to ensure that the passing efficiency of the one-way valve is gradually reduced, the input port 202 and the input interface 101 or the output port 203 and the output interface 102 are completely staggered to open, the sealing of the one-way valve can be kept, so that the one-way valve can be conveniently adjusted according to the actual use requirement, and is more convenient and quicker to use, meanwhile, the pressure relief interface 103 is arranged between the input interface 101 and the output interface 102, the pressure relief interface 103 is also connected on the circular valve shell 1, the pressure relief interface 103 and the input interface 101 and the output interface 102 are arranged at an included angle of ninety degrees, the arc-shaped communication groove 204 is arranged in the middle of the arc-shaped surface at the outer side of the circular valve core 2, the arc-shaped communication groove 204 is arranged right opposite to the pressure relief interface 103, so that after the circular valve core 2 rotates at a certain angle, the arc-shaped communication groove 204 can synchronously rotate along with the circular valve core 2, after the valve rotates by a certain angle, the input interface 101 or the output interface 102 can be communicated with the pressure relief interface 103 through the arc-shaped communication groove 204, so that liquid can be directly discharged from the pressure relief interface 103 through the input interface 101 or the output interface 102, and therefore when the check valve is used, pressure can be relieved through the pressure relief interface 103 when the pressure of the input interface 101 or the output interface 102 is too high, the pipeline and the check valve are prevented from being damaged due to too high pressure, and the valve is safer and more reliable in use.

Referring to fig. 1 to 10, optionally, an arc-shaped communicating groove 204 is formed in the middle of the outer arc surface of the circular valve core 2 of the check valve, and the position of the arc-shaped communicating groove 204 can be adjusted by rotating the circular valve core 2, so that the input port 101 or the output port 102 can be communicated with the pressure relief port 103 through the arc-shaped communicating groove 204, and liquid can be directly discharged from the pressure relief port 103 through the input port 101 or the output port 102, so as to perform pressure relief when the pressure is too high, a horizontal balance tube 5 is disposed above the circular valve housing 1, a horizontal connecting rod 502 is disposed inside the horizontal balance tube 5, balance pistons 501 are symmetrically disposed at the left end and the right end of the horizontal connecting rod 502, the horizontal connecting rod 502 is slidably connected with the horizontal balance tube 5 in a nested manner through the balance pistons 501, the size of the balance pistons 501 is matched with the horizontal balance tube 5, and a driving rack 503 is disposed in the middle of the horizontal connecting rod 502, meanwhile, an input communicating pipe 104 is arranged on the outer side of the input interface 101, an output communicating pipe 105 is arranged on the outer side of the output interface 102, the input interface 101 is connected with the front end of the horizontal balance pipe 5 through the input communicating pipe 104, the output interface 102 is connected with the rear end of the horizontal balance pipe 5 through the output communicating pipe 105, so that the input interface 101 or the output interface 102 can be directly communicated with the two ends of the horizontal balance pipe 5 through the input communicating pipe 104 or the output communicating pipe 105, and further the pressure of the input interface or the output interface can be directly transmitted to the two ends of the horizontal balance pipe 5, a balance piston 501 nested in the horizontal balance pipe 5 can move through the pressure difference of the two ends of the horizontal balance pipe 5, a vertical sleeve 505 is arranged below the center of the horizontal balance pipe 5, a driving rotating shaft 205 is nested and rotatably arranged on the inner side of the vertical sleeve 505, and an adjusting gear 206 is arranged on the top end of the driving rotating shaft 205, the adjusting gear 206 and the driving rack 503 are engaged with each other to form a transmission structure, so when a pressure difference is generated between the input interface 101 and the output interface 102, the balance piston 501 and the horizontal connecting rod 502 therebetween can be pushed, the driving rack 503 on the horizontal connecting rod 502 is further driven, the adjusting gear 206 can be driven to rotate by the driving rack 503, the circular valve core 2 is further driven to rotate by the driving rotating shaft 205 at a certain angle, the larger the pressure difference is, the larger the rotating angle of the circular valve core 2 is, so when a smaller pressure difference is generated, the straight rotating angle of the circular valve core 2 is smaller, the central communicating pipe 201 is staggered with the input interface 101 and the output interface 102, the pressure is prevented from being directly transmitted to a more fragile one-way passing structure of the central communicating pipe 201, the pressure bearing and the sealing are kept by the firmer outer side cambered surface of the circular valve core 2, and the reliability of the one-way valve is improved, when the pressure difference is too large, the rotation angle of the circular valve core 2 is larger, the arc-shaped communicating groove 204 directly rotates to the input interface 101 or the output interface 102 to communicate the input interface 101 with the pressure relief interface 103 or the output interface 102 with the pressure relief interface 103 for pressure relief, so that the pipeline and the valve body are prevented from being damaged due to the too large pressure, meanwhile, a section of vacant idle tooth section 504 is arranged at the center of the driving rack 503 arranged in the middle of the horizontal connecting rod 502 to allow the pressure difference between the two sides to be limited without driving the circular valve core 2 to rotate, so that the normal operation of the check valve is convenient to maintain, and the check valve can be automatically adjusted according to the pressure difference between the input end and the output end through an automatic pressure adjusting structure formed by the circular valve core 2, so that the sealing or the pressure relief is performed, and the use is more flexible, convenient and reliable.

Referring to fig. 1 to 10, optionally, the check valve is connected and communicated with the output communication pipe 105 through the input communication pipe 104 to communicate with the input port 101, the output port 102 and two ends of the horizontal balance pipe 5, the connecting seal cylinder 6 is disposed between the input communication pipe 104 and the output communication pipe 105, the sealing valve stem 601 is slidably disposed inside the connecting seal cylinder 6 in a nested manner, so that the input communication pipe 104 and the output communication pipe 105 are closed by the sealing valve stem 601 in a daily state, when the sealing valve stem 601 slides to one side to let the connecting seal cylinder 6 open, the input communication pipe 104 can be communicated with the output communication pipe 105, and one side of the sealing valve stem 601 close to the vertical centerline of the circular valve housing 1 is provided with the linkage sliding rod 602, the top end of the central rotating shaft 403 is provided with the arc-shaped linkage block 405, the linkage adjusting disc 7 is disposed above the central rotating shaft 403, the middle of the linkage adjusting disc 7 is provided with the arc-shaped linkage groove 701, the central rotating shaft 403 is embedded and connected with the linkage adjusting disk 7 through the arc-shaped linkage block 405 and the arc-shaped linkage groove 701, the linkage rotating shaft 702 is symmetrically arranged on the outer side of the linkage adjusting disk 7, the driving connecting rod 703 is arranged on the outer side of the linkage rotating shaft 702, the inner end of the driving connecting rod 703 is rotationally connected with the linkage adjusting disk 7 through the linkage rotating shaft 702, the connecting rod rotating shaft 704 is arranged on the outer end of the driving connecting rod 703, the outer end of the driving connecting rod 703 is rotationally connected with the linkage sliding rod 602 through the connecting rod rotating shaft 704, so that the linkage adjusting disk 7 is rotated to drive the linkage sliding rod 602 and the stem sealing valve 601 in the input communicating pipe 104 and the output communicating pipe 105 to move so as to adjust whether the input communicating pipe 104 is communicated with the output communicating pipe 105 or not, the linkage adjusting disk 7 is mutually connected with the semicircular sealing block 4 through the central rotating shaft 403, the linkage adjusting disk 7 can be driven to rotate through the semicircular sealing block 4 so as to adjust whether the input communicating pipe 104 is communicated with the output communicating pipe 105 or not, when the semicircular sealing block 4 is in a closed state, the sealing valve stem 601 in the input communicating pipe 104 and the output communicating pipe 105 are in an open state, that is, the input communicating pipe 104 and the output communicating pipe 105 are kept unblocked, so that pressure conduction is facilitated, the check valve can be automatically adjusted according to the pressure difference between the input end and the output end to perform closing or pressure relief, when the semicircular sealing block 4 is in an open state, the sealing valve stem 601 in the input communicating pipe 104 and the output communicating pipe 105 is completely blocked, so that the influence of the pressure difference between the two sides on the passage of fluid in the valve body is avoided, and only when the circular valve core 2 is in a central position, that is, the input port 202 and the output port 203 are respectively opposite to the input interface 101 and the output interface 102, the arc-shaped linkage block 405 of the central rotating shaft 403 is embedded in the arc-shaped linkage groove 701 of the linkage adjusting disk 7, so that the central rotating shaft 403 can drive the linkage adjusting disk 7 to rotate, the circle centers of the arc-shaped linkage groove 701 and the arc-shaped linkage block 405 are located on the same straight line with the driving rotating shaft 205 of the circular valve core 2, so that the central rotating shaft 403 and the arc-shaped linkage block 405 can synchronously rotate with the circular valve core 2, and further the automatic sealing and pressure relief mechanism of the one-way valve can be controlled in a linkage manner according to the state of the semicircular sealing block 4, namely whether the one-way valve is conducted or not, and the whole use is more flexible and reliable.

When the check valve is used, an input interface 101, an output interface 102 and a pressure relief interface 103 which are arranged on a circular valve casing 1 of the check valve are connected into corresponding pipelines, then when the check valve works, liquid can enter the circular valve casing 1 through the input interface 101, and then enters a central communicating pipe 201 through an input port 202 which is opposite to a circular valve core 2, the fluid continuously flows through the central communicating pipe 201 until reaching a straight communicating port 301 of a circular communicating cavity 3, the fluid pushes away a semicircular sealing block 4 which is sealed at the straight communicating port 301 through certain pressure, so that the semicircular sealing block 4 rotates ninety degrees along a central rotating shaft 403 to open the straight communicating port 301 and an arc communicating port 302, and the pressure can enter the other side of the central communicating pipe 201 through the straight communicating port 301 and the arc communicating port 302 and is conveyed to the output interface 102 through an output port 203 to complete the circulation of the liquid, when the liquid flows reversely, the liquid in the straight communication port 301 does not push the semicircular sealing block 4 by the corresponding pressure, the semicircular sealing block 4 is pushed by the reset spring 404 to rotate reversely along the central rotating shaft 403 to reset, and then the straight communication port 301 and the arc communication port 302 are completely closed, so as to realize the one-way conduction of the check valve, when the pressure difference between the input interface 101 and the output interface 102 is greater than the rated value, the pressure is directly transmitted to the two ends of the horizontal balance pipe 5 through the input communicating pipe 104 and the output communicating pipe 105, and the balance piston 501 nested inside the horizontal balance pipe 5 can move by the pressure difference between the two ends of the horizontal balance pipe 5, so as to drive the driving rack 503 on the horizontal connecting rod 502 to drive the adjusting gear 206 to rotate, and then the circular valve core 2 is driven to rotate by a certain angle through the driving rotating shaft 205, when the pressure difference is greater than the rated value, the straight turned angle of circular case 2 is less, make center communicating pipe 201 stagger each other with input interface 101 and output interface 102, avoid pressure direct transmission to the more fragile one-way structure of passing through of center communicating pipe 201 structure, the outside cambered surface pressure-bearing through more firm circular case 2 keeps sealed, when pressure differential is greater than the rated value when too much, 2 turned angle of circular case can be bigger, make arc intercommunication groove 204 directly rotate to input interface 101 or output interface 102, carry out the pressure release with intercommunication input interface 101 and pressure release interface 103 or output interface 102 and pressure release interface 103, avoid the too big pipeline and the valve body of damaging of pressure, thereby the use work of the check valve of accomplishing.

The hydraulic one-way valve provided by the invention controls the conduction of an input interface 101 and an output interface 102 through a circular valve core 2 which is embedded and rotated in a circular valve shell 1, a semicircular sealing block 4 is embedded in a circular communication cavity 3 in the circular valve core 2, the semicircular sealing block 4 can only rotate in one direction through the limitation of a straight communication port 301 so as to realize the function of one-way conduction, simultaneously can simultaneously seal an input end and an output end in a closed state, and the circular valve core 2 can rotate integrally so as to adjust the relative positions of an input port 202 and an output port 203 which are arranged on the circular valve core 2 and the input interface 101 and the output interface 102 which are arranged on the circular valve shell 1, so as to adjust the integral conduction of a valve body, the rotation of the circular valve core 2 is controlled through a horizontal balance pipe 5, and two ends of the horizontal balance pipe 5 are respectively connected with the input interface 101 and the output interface 102, therefore, the positions of the balance piston 501 and the horizontal connecting rod 502 inside the valve body can be controlled through the pressure difference between the two sides, the rotation angle of the circular valve core 2 is controlled through the driving rack 503, the adjusting gear 206 and the driving rotating shaft 205 in a linkage mode, the valve body is flexibly adjusted through the pressure difference between the input end and the output end, and the use is more convenient and faster.

Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to suggest that the scope of one or more embodiments of the present specification (including the claims) is limited to these examples; within the context of one or more embodiments of the present description, features from the above embodiments or from different embodiments may also be combined, steps may be performed in any order, and there are many other variations of the different aspects of one or more embodiments of the present description as described above, which are not provided in detail for the sake of brevity.

While one or more embodiments of the present specification have been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art in light of the foregoing description.

It is intended that the one or more embodiments of the present specification embrace all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of one or more embodiments of the present disclosure are intended to be included within the scope of the one or more embodiments of the present disclosure.