CN117072725A - Large-size hydraulic valve structure - Google Patents

Large-size hydraulic valve structure Download PDF

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Publication number
CN117072725A
CN117072725A CN202311326965.5A CN202311326965A CN117072725A CN 117072725 A CN117072725 A CN 117072725A CN 202311326965 A CN202311326965 A CN 202311326965A CN 117072725 A CN117072725 A CN 117072725A
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CN
China
Prior art keywords
valve
cavity
hydraulic
passages
assembled
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311326965.5A
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Chinese (zh)
Inventor
宋绍文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shaoyang Victor Hydraulics Co ltd
Original Assignee
Shaoyang Victor Hydraulics Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shaoyang Victor Hydraulics Co ltd filed Critical Shaoyang Victor Hydraulics Co ltd
Priority to CN202311326965.5A priority Critical patent/CN117072725A/en
Publication of CN117072725A publication Critical patent/CN117072725A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/18—Check valves with actuating mechanism; Combined check valves and actuated valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/027—Check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F16K31/1223—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being acted upon by the circulating fluid

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Valve Housings (AREA)

Abstract

The application discloses a large-size hydraulic valve structure, which comprises a valve body shell, wherein the valve body shell is provided with a valve body; the valve body shell is provided with a valve cavity between the connecting sections at two sides, the valve cavity is connected with the connecting sections through an inner neck, buffer cavities are arranged at two ends of the valve cavity, and a cylindrical structural body is formed between the two buffer cavities in the valve cavity; the cylindrical structure body is provided with a plurality of passages with Tesla valves, the passages are flow passages of medium in the pipeline, and the Tesla valves are arranged in the same direction and are communicated with the front buffer cavity and the rear buffer cavity; the cylinder-shaped structure body is provided with a hydraulic piston body in the inner hollow cavity, the outer side of the piston body is connected with a jacking block matched with the size of the adduction neck through a piston rod, and the jacking block is propped against the adduction neck in the piston movement process to realize the on-off of the valve. The application has the advantages of stable performance, reasonable structure and low forming cost, and is widely applicable to the control of large-caliber pipeline valves in the industries of petroleum, chemical engineering, ocean engineering, ships and the like.

Description

Large-size hydraulic valve structure
Technical Field
The application relates to the technical field of hydraulic valves, in particular to a large-size hydraulic valve structure.
Background
The valve is used as a pipeline structure for opening and closing pipelines, controlling flow direction, regulating and controlling conveying media, and is used in industrial pipelines in engineering machinery, petroleum, chemical engineering, ocean engineering, ships and other industries. Along with the development of technology and the improvement of the automatic control degree in the production process, the opening and closing control of the valve, especially the opening and closing control of the valve which needs to be remotely controlled, is mostly realized by adopting electric, pneumatic or hydraulic driving. The hydraulic valve is used as an automatic element operated by pressure oil, has the advantages of large driving force, strong quick dynamic response capability, excellent anti-interference performance, convenience for frequent and stable reversing and the like, is usually combined with an electromagnetic valve, can be used for remotely controlling the on-off of oil, gas and water pipeline systems, and can also be used for controlling hydraulic oil ways such as clamping, controlling and lubricating.
Because of the requirements on functions and stability, the hydraulic valve in the prior art is generally complex in structure, more in movable structural parts, and larger in bearing pressure in pipelines when being used in fluid pipelines of oil, water and gas with medium and large sizes, meanwhile, the internal valve core structural parts of the hydraulic valve need to bear pressure and maintain pressure simultaneously in a working state, so that the more hydraulic valves in the prior art have the following two technical defects:
1. the hydraulic valve assembled in some large-section pipelines requires a certain starting time in the actual opening and closing action process, particularly when the hydraulic valve is opened, the valve cavity needs to be pressurized to ensure the initial driving force in the initial opening stage due to the reasons of pipeline back pressure, conveying medium inertia, static friction and the like, and in order to achieve the use effect and improve the control precision of components, the pressure bearing grade of the hydraulic valve is usually increased or the aim is achieved by adding a complex pressurizing structure in the prior art, so that the pipeline is always kept under a larger pipe pressure condition; in practice, however, the pressure-bearing requirement on the structural members inside the valve cavity is small in the opened holding state of the hydraulic valve, which results in a large maraca trolley, resulting in cost improvement and resource waste.
2. The components in the valve core of the hydraulic valve are easy to wear under the impact of fluid, the structural wear is unavoidable, the movable components in the hydraulic valve are damaged, the movable structural parts in the valve are further damaged, the normal use of the valve body is affected, the service life of the valve core is also affected when serious, and even the valve body is directly scrapped in advance; the frequent maintenance and replacement of the valve can also directly affect the normal use of the corresponding pipeline, so that the use cost of the related system is increased and the comprehensive use rate of the hydraulic valve is reduced.
This is particularly true for high precision hydraulic valves and large size hydraulic valves, which are often complex in construction.
For the above reasons, it is necessary to improve the existing large-size hydraulic valve structure suitable for large-section pipelines, and on the basis of guaranteeing the structural strength of the valve, the stability of the product is improved, the service life of the structure is prolonged, the applicability of the scene is improved, and the maintenance cost is reduced.
Disclosure of Invention
The technical problem solved by the application is to provide a large-size hydraulic valve structure which is used as a one-way on-off valve on a large-caliber pipeline with the pipe diameter of more than 50mm and can be used for solving the defects in the technical background.
The technical problems solved by the application are realized by adopting the following technical scheme:
a large-sized hydraulic valve structure comprising a valve body housing;
connecting sections are arranged on two sides of the valve body shell, and the valve is assembled and connected with the pipeline through an assembling structure at the positions of the connecting sections on two sides; the valve body shell is provided with a valve cavity between the connecting sections at two sides, the valve cavity is connected with the connecting sections through an inner receiving neck, the valve cavity is a cylindrical cavity, the front end and the rear end of the valve cavity are both provided with a volume cavity serving as a buffer cavity, and a cylindrical structural body is formed in the valve cavity at a middle position between the front buffer cavity and the rear buffer cavity correspondingly;
the cylindrical structural body is provided with a plurality of passages arranged along the length direction of the valve cavity in a forming mode on the annular section, the passages are flow channels of medium in the pipeline, the passages are uniformly arranged at intervals on the annular section, and each passage is provided with a Tesla valve matched with the passage section in a forming mode; the Tesla valves are arranged in the same direction and are communicated with the front buffer cavity and the rear buffer cavity;
the hollow cavity of the cylindrical structural body is a hydraulic cavity, and an oil supply pipeline is formed at the tail end of the hydraulic cavity, extends out of the valve body shell from the side wall and is assembled and connected with the hydraulic oil supply system; the hydraulic cavity is provided with a piston body, the outer side of the piston body is connected with a jacking block through a piston rod, the jacking block is matched with the size of the adduction neck, and the jacking block is propped against the adduction neck in the piston movement process to realize the on-off of the valve.
As a further limitation, the assembly structure is a mating end face connection flange or a quick connector, and a sealing structure is formed on the assembly surface of the end face connection flange and the quick connector.
By way of further definition, the buffer chamber and the tesla valve are in a junction transition through a coanda surface.
By way of further limitation, the passages provided in the cylindrical structure are sector-shaped or rectangular in cross section, and 3 to 5 in number, and the oil supply lines extend out of the valve body housing through gaps between adjacent passages.
As a further limitation, the pressure distributing valve of the hydraulic oil supply system is directly assembled at the position of the pipe orifice of the oil supply pipeline of the valve body shell and is integrally formed with the valve body shell.
As a further limitation, a ring-shaped blind groove is formed at the opposite side of the top block of the adduction neck and is used as a rubber ring assembly groove, a sealing lining ring is assembled in the rubber ring assembly groove, and a ring-shaped step surface is formed on the sealing lining ring; and a rubber sleeve head is sleeved on the top block, and a ring step protrusion matched with the ring step surface is formed on the top surface of the rubber sleeve head.
As a further limitation, the cylindrical structure is directly formed in the housing cavity of the valve body housing by an integral molding.
As a further limitation, the large-size hydraulic valve structure is an assembled structure, and the valve body shell and the cylindrical structural body are independently molded;
the valve body housing comprises a separable main housing and an end cover; the main shell covers the valve cavity, the rear buffer cavity and the connecting section, a cavity is formed in the inner side of the main shell, and the front end face of the cavity is open; the cylindrical structural body is matched with the cavity in size and assembled on the opening surface of the cavity in an inserting mode; the end cover covers the front buffer cavity end and the connecting section, and after the cylindrical structural body is assembled in the cavity, the end face seal assembly is carried out on the outer side through the end cover;
the cylindrical structural body and the cavity are positioned by a key structure;
the end cover is fastened on the open side end face of the main shell at the outer side and is secondarily fixed through a threaded fastener.
The large-size hydraulic valve has the following technical effects and advantages:
the valve has compact integral structure, fewer parts, convenient installation and convenient control, and is particularly suitable for being used as a one-way on-off valve on a large-caliber pipeline with the diameter of more than 50 mm;
the Tesla valve is used as a passage structural member for carrying out fluid medium transmission, no moving parts are arranged, the abrasion in the use process is low, the service life is long, and the use and maintenance cost of a pipeline can be effectively reduced;
the passage structure of the Tesla valve can prevent the backflow of fluid medium and ensure the bearing performance of structural members in the valve cavity, and meanwhile, the valve body structure of the Tesla valve does not need to control the movement of fluid through other movable parts, so that the Tesla valve has excellent pipeline adaptability, has better adaptability to oil, water and gas media without solid impurities, and reduces the possibility of damaging functions caused by corrosion or abrasion of the parts;
the combination of the Tesla valve and the Counta surface can carry out unidirectional pressurization when being transmitted in a large-diameter pipeline, so that the large-diameter pipeline has better driving pressure at the opening initial section of the valve, can ensure the stability of the valve body in the pressure-bearing state in the opening process, is more wear-resistant and durable, and can greatly prolong the service life of the valve body.
Drawings
FIG. 1 is a schematic structural diagram of a preferred embodiment of the present application.
FIG. 2 is a schematic view of another position of the preferred embodiment of FIG. 1.
Fig. 3 is a structural bottom view of the cylindrical structure.
Fig. 4 is a bottom view of another construction of the spar structure.
Fig. 5 is an enlarged schematic view of the structure of the portion a in fig. 2.
Wherein: 1. an end face connecting flange; 2. an adduction neck; 3. an end cap; 4. a seal collar; 5. a positioning key; 6. countersunk head bolts; 7. a main housing; 8. an assembly seat; 9. a pressure distributing valve; 10. the hydraulic oil pipeline is connected with the pipe orifice; 11. a liquid inlet end; 12. a liquid outlet end; 13. a front buffer chamber; 14. a coanda surface; 15. a rubber sleeve head; 16. a passage; 17. a top block; 18. a cylindrical structure; 19. a guide bearing; 20. a tesla valve; 21. a piston rod; 22. a piston body; 23. a hydraulic chamber; 24. an oil supply line; 25. a rear buffer chamber.
Description of the embodiments
In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
In the following examples, it will be understood by those skilled in the art that all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Referring to a preferred embodiment of the large-sized hydraulic valve structure of fig. 1, in this embodiment, the large-sized hydraulic valve is used as a one-way valve structure on a water supply pipe with a pipe diameter of 60 mm; the two sides of the large-size hydraulic valve structure are respectively provided with an end face connecting flange 1 which is used as a connecting section structure to be assembled and connected with a corresponding water supply pipeline, and the air supply pipeline is controlled to be on-off and controlled by water supply pressure.
In other embodiments, the large-scale hydraulic valve may also be used in a gas supply line or other liquid medium supply line. In order to adapt to pipelines of different sizes and mediums of different properties, the connecting section structures correspondingly arranged at the two ends of the large-size hydraulic valve can also adopt the pipeline connecting structures existing in the prior art, such as quick connectors or threaded connectors. In order to ensure the structural tightness of the connection between the valve and the pipeline, necessary sealing structures should also be arranged on the corresponding end face connecting flange 1, the quick connector or the threaded connector.
The large-size hydraulic valve structure of the application mainly has two structural forms, one of which is an assembled structural form as shown in fig. 1, the assembled structural form comprises a valve body shell which is independently formed and a cylindrical structural body 18 assembled in the valve body shell, the valve body shell comprises a separable main shell 7 and an end cover 3, and the main shell 7, the end cover 3 and the cylindrical structural body 18 are mutually independently formed and assembled before use.
The inside of the main housing 7 is provided with a transversely penetrating cavity, the size and shape of which are matched with the outer contour size and shape of the cylindrical structural body 18, the left end face of the cavity of the main housing 7 is provided with an open face, and the right end of the main housing 7 is provided with an end face connecting flange 1 which is of a connecting section structure.
The left end of the end cover 3 is provided with an end face connecting flange 1 which is of a connecting section structure, and the right end of the end cover 3 is provided with a cover cylinder matched with the outer diameter of the main shell 7, and the end face assembly of the end cover 3 on the left end face of the main shell 7 can be completed through the cover cylinder.
The cylindrical structure 18 has a plurality of passages 16 uniformly formed in the annulus thereof, and the passages 16 are uniformly disposed in the cross-sectional annulus of the cylindrical structure 18 and along the length of the cylindrical structure 18. In various embodiments, the cylindrical structure 18 may be square cylindrical or cylindrical, the cross section of the passages 16 provided in the cylindrical structure 18 may be fan-shaped or rectangular, the number of the passages 16 on the cross section of the cylindrical structure 18 is 3 to 5, the oil supply passages 24 extend out of the valve body housing through the gaps between the adjacent passages 16, and the cross section of the inner cavity of the cylindrical structure 18 is preferably selected to be circular to facilitate arrangement of the piston body 22.
By way of example, two common embodiments of cylindrical structures 18 are shown in fig. 3 and 4, wherein in the embodiment shown in fig. 3, the central cylindrical structure 18 is cylindrical, the corresponding passages 16 are four, the sections of the four passages 16 are all fan-shaped, and the four passages are uniformly arranged on the cross-sectional circle of the central cylindrical structure 18; in the embodiment shown in fig. 4, the middle cylindrical structural body 18 is square cylindrical, four corresponding passages 16 are provided, the cross sections of the four passages 16 are rectangular, and the passages 16 are used as medium flow passages of the valve body and are arranged at the middle positions of the four sides corresponding to the cross section of the middle cylindrical structural body 18. In both the embodiment shown in fig. 3 and the embodiment shown in fig. 4, the central bore of the central cylindrical structure 18 is left with a left-hand open, right-hand closed transverse blind bore which serves as a hydraulic chamber 23 for the assembly of the piston body 22.
In an embodiment of the present application, a tesla valve 20 is formed in each passageway 16 of the cylindrical structure 18, and the tesla valve 20 may be assembled in the passageway 16 by a plug-in manner in different embodiments, or may be directly formed in the passageway 16. The hydraulic chamber 23 of the cylindrical structure 18 is fitted with a piston body 22, and the piston body 22 is connected to the top block 17 at the left end via a piston rod 21, and the top block 17 is fitted with a rubber nipple 15.
The cylindrical structure 18 is end-face-fitted to the cavity-opening surface side of the main housing 7 in the manner shown in fig. 1 and 2, and after the cylindrical structure 18 is fitted to the cavity of the main housing 7, the left end face of the main housing 7 is face-sealed by the end cap 3.
In order to ensure the fitting performance between the cylindrical structural body 18 and the main casing 7 and to maintain the alignment of the cylindrical structural body 18 and the main casing 7 at the positions corresponding to the oil supply lines 24, matching key grooves are provided on the positions of the cylindrical structural body 18 opposite to the left end face of the main casing 7 so that the positioning and fixing can be accomplished by fitting the positioning key 5 at the key groove position after the cylindrical structural body 18 is fitted into the main casing 7. In order to ensure the structural stability of the assembly of the end cover 3 on the main shell 7, at least one threaded assembly hole is formed on the corresponding positions of the side wall of the cover cylinder of the end cover 3 and the side wall of the main shell 7; after the end cover 3 is assembled on the left end face of the main shell 7 through the cover cylinder, the end face assembly and the position fixation of the end cover 3 on the main shell 7 can be completed by screwing the countersunk bolt 6 in the threaded assembly hole position.
The cylindrical structure 18, the main housing 7 and the end cover 3 are assembled to form the structural style shown in fig. 1 and 2, wherein fig. 1 shows the opened state of the hydraulic valve, and fig. 2 shows the closed state of the hydraulic valve.
In the structural style shown in fig. 1 and 2, the opening of the end cap 3 on the end face connecting flange 1 corresponds to the liquid inlet end 11, and the opening of the main housing 7 on the end face connecting flange 1 corresponds to the liquid outlet end 12.
The end cover 3 is provided with an inner receiving neck formed on the inner side of the liquid inlet end 11, a volume cavity space is reserved between the inner receiving neck and the left end face of the cylindrical structural body 18 to serve as a front buffer cavity 13, a coanda surface 14 is formed on the outer wall of the front buffer cavity 13, the front buffer cavity 13 guides a water body in the front buffer cavity 13 to a passage 16 through the coanda surface 14, and unidirectional flow guide is carried out in the passage 16 through a Tesla valve 20.
An inner neck is formed on the main housing 7 on the inner side of the liquid outlet end 12 corresponding to the end surface connecting flange 1, a rear buffer cavity 25 is formed between the inner neck and the rear end surface of the cylindrical structural body 18, the cavity wall of the rear buffer cavity 25 is also a coanda surface 14, and the water outlet passing through the Tesla valve 20 passes through the coanda surface 14 and is led out from the liquid outlet end 12 side.
The switching of the opened state and the closed state of the hydraulic valve is achieved by the reciprocating movement of the piston body 22:
an assembling seat 8 which is integrally formed with the main shell 7 is formed at the upper part of the right side of the main shell 7, a pressure distributing valve 9 is assembled on the assembling seat 8, a hydraulic oil pipe connector 10 on the pressure distributing valve 9 is externally connected with a hydraulic oil pipe, and the hydraulic oil pipe is connected with a hydraulic oil container to form a hydraulic oil supply system; the hydraulic oil supply system performs pressure distribution through the pressure distribution valve 9 to inject and discharge hydraulic oil into and from the hydraulic cavity 23, so that the piston body 22 drives the piston rod 21 to drive the jacking block 17 to reciprocate at the inner neck position of the end cover 3, and the hydraulic valve is opened and closed by propping against the closed channel and opening the channel at the inner neck position.
In order to optimize and adapt the relative movements of the above-mentioned mechanism in the open and closed states of the hydraulic valve, the hydraulic chamber 23 is provided with three guide bearings 19 in the extension direction of the corresponding piston rod 21 to ensure the coaxiality and stability of the overall movement of the piston structure; meanwhile, a rubber sleeve head 15 is sleeved on the top surface of the top block 17, a ring-shaped blind groove is formed at the propping position of the inner neck of the end cover 3 end to serve as a rubber ring assembly groove, and a sealing lining ring 4 matched with the rubber sleeve head 15 is assembled on the rubber ring assembly groove; the matching pattern of the sealing lining ring 4 and the rubber sleeve head 15 is shown in fig. 5, and an annular step surface is formed on the sealing lining ring 4; the top surface of the rubber sleeve head 15 is provided with annular step bulges matched with the annular step surfaces; so that when the rubber sleeve head 15 is pressed against the sealing gasket 4 through the movement of the piston structure, the step surface pressing can be performed in a mode shown in fig. 5, so that the sealing and closing effect of the hydraulic valve in the closed state is ensured.
The large-sized hydraulic valve structure of this embodiment is assembled by the cylindrical structure 18, the main housing 7 and the end cap 3 before use, the structure shown in fig. 1 and 2 is obtained by assembling, then the hydraulic oil pipe joint orifice 10 is connected into the hydraulic oil supply system, and the end face connecting flange 1 of the end cap 3 and the end face connecting flange 1 of the main housing 7 are respectively inserted into the pipe system (the assembling direction is noted), so that the opening, closing and opening of the valve can be controlled by the pressure distributing valve 9 in the above-mentioned manner.
In other embodiments, compared with the assembled structure shown in the above embodiments, under the condition of another structure, the hydraulic valve structure may also adopt a non-assembled structure, under the condition of this technical scheme, the cylindrical structure 18 may also adopt a non-assembled structure, under the condition of this technical scheme, the corresponding cylindrical structure 18 is directly formed in the corresponding inner cavity of the main housing 7 of the valve body housing in an integral forming manner; the main shell 7 and the end cover 3 can adopt a split assembly structure or the same
Compared with the technical solution of the embodiment of the assembly type structure, the technical solution has the advantages of easy forming and lower structure cost, but has the defect of difficult maintenance.
In addition, in the above embodiments of the present application, the person skilled in the art performs structural sealing at the seam portion by using a sealing member as necessary according to the process permission between the structural members, and the above technical content belongs to the conventional technical choices known to the person skilled in the art, and will not be described herein.
The foregoing has shown and described the basic principles, principal features and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present application, and various changes and modifications may be made without departing from the spirit and scope of the application, which is defined in the appended claims. The scope of the application is defined by the appended claims and equivalents thereof.

Claims (10)

1. A large-size hydraulic valve structure is characterized in that the hydraulic valve structure comprises a valve body shell;
connecting sections are arranged on two sides of the valve body shell, and the valve is assembled and connected with the pipeline through an assembling structure at the positions of the connecting sections on two sides; the valve body shell is provided with a valve cavity between the connecting sections at two sides, the valve cavity is connected with the connecting sections through an inner receiving neck, the valve cavity is a cylindrical cavity, the front end and the rear end of the valve cavity are both provided with a volume cavity serving as a buffer cavity, and a cylindrical structural body is formed in the valve cavity at a middle position between the front buffer cavity and the rear buffer cavity correspondingly;
the cylindrical structural body is provided with a plurality of passages arranged along the length direction of the valve cavity in a forming mode on the annular section, the passages are flow channels of medium in the pipeline, the passages are uniformly arranged at intervals on the annular section, and each passage is provided with a Tesla valve matched with the passage section in a forming mode; the Tesla valves are arranged in the same direction and are communicated with the front buffer cavity and the rear buffer cavity;
the hollow cavity of the cylindrical structural body is a hydraulic cavity, and an oil supply pipeline is formed at the tail end of the hydraulic cavity, extends out of the valve body shell from the side wall and is assembled and connected with the hydraulic oil supply system; the hydraulic cavity is provided with a piston body, the outer side of the piston body is connected with a jacking block through a piston rod, the jacking block is matched with the size of the adduction neck, and the jacking block is propped against the adduction neck in the piston movement process to realize the on-off of the valve.
2. The large-sized hydraulic valve structure according to claim 1, wherein the assembling structure is a matched end face connecting flange or a quick connector, and a sealing structure is formed on an assembling surface of the end face connecting flange and the quick connector.
3. The large scale hydraulic valve structure of claim 1, wherein a connection transition between the buffer chamber and the tesla valve is made through a coanda surface.
4. The large-sized hydraulic valve structure according to claim 1, wherein the cross section of the passage provided in the cylindrical structural body is a sector or a rectangle, the number of the passages is 3 to 5, and the oil supply line extends out of the valve body housing through a gap between adjacent passages.
5. The large-sized hydraulic valve structure according to claim 1, wherein the pressure distribution valve of the hydraulic oil supply system is directly assembled at the position of the oil supply pipe orifice of the valve body housing and is integrally formed with the valve body housing.
6. The large-sized hydraulic valve structure according to claim 1, wherein the adduction neck is formed with a ring-shaped blind groove as a rubber ring assembly groove at the opposite side position of the top block, the rubber ring assembly groove is assembled with a seal lining ring, and the seal lining ring is formed with a ring-shaped step surface; and a rubber sleeve head is sleeved on the top block, and a ring step protrusion matched with the ring step surface is formed on the top surface of the rubber sleeve head.
7. The large-sized hydraulic valve structure according to claim 1, wherein the cylindrical structural body is directly formed in the housing inner cavity of the valve body housing by an integral molding manner.
8. The large-sized hydraulic valve structure according to claim 1, wherein the large-sized hydraulic valve structure is an assembled structure, and the valve body housing and the cylindrical structural body are independently molded;
the valve body housing comprises a separable main housing and an end cover; the main shell covers the valve cavity, the rear buffer cavity and the connecting section, a cavity is formed in the inner side of the main shell, and the front end face of the cavity is open; the cylindrical structural body is matched with the cavity in size and assembled on the opening surface of the cavity in an inserting mode; the end cover covers the front buffer cavity end and the connecting section, and after the cylindrical structural body is assembled in the cavity, the end face seal assembly is carried out on the outer side through the end cover.
9. The large scale hydraulic valve structure of claim 8, wherein the cylindrical structure is positioned with a key structure between the cavity and the cavity.
10. The large-sized hydraulic valve structure according to claim 8, wherein the end cap is fastened to the open side end face of the main housing at the outside and is secondarily fixed by a screw fastener.
CN202311326965.5A 2023-10-13 2023-10-13 Large-size hydraulic valve structure Pending CN117072725A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311326965.5A CN117072725A (en) 2023-10-13 2023-10-13 Large-size hydraulic valve structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311326965.5A CN117072725A (en) 2023-10-13 2023-10-13 Large-size hydraulic valve structure

Publications (1)

Publication Number Publication Date
CN117072725A true CN117072725A (en) 2023-11-17

Family

ID=88706346

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311326965.5A Pending CN117072725A (en) 2023-10-13 2023-10-13 Large-size hydraulic valve structure

Country Status (1)

Country Link
CN (1) CN117072725A (en)

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