CN211924919U

CN211924919U - Straight-through double-seat control valve

Info

Publication number: CN211924919U
Application number: CN201921458680.6U
Authority: CN
Inventors: 刘州豪
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-11-13
Anticipated expiration: 2029-09-04

Abstract

The utility model discloses a straight-through double-seat control valve relates to fluid control device technical field, specifically is a straight-through double-seat control valve, set up the valve body in intake antrum and play water cavity respectively including both ends, be located the inside disk seat of valve body, be located the sealed shell at valve body top, be located the control seat at sealed shell top and the valve rod of being connected with valve body, disk seat, sealed shell and control seat respectively, the bottom fixedly connected with base of valve body. This straight-through double-seat control valve through sealed shell and metal covering cooperation, can make the valve body be in the encapsulated situation with external and sealed shell, effectively avoids the interior liquid leakage of pipeline, through the oil inlet, can in time supply lubricating oil, prevents that the unable normal rotation of valve rod from adjusting, has connect the case through the fixed cover in the valve rod surface to and intake antrum, cavity, play water passageway, go out the cooperation between water bend and the play water cavity, do not have axle and rubber, when guaranteeing valve control effect, prevent to corrode.

Description

Straight-through double-seat control valve

Technical Field

The utility model relates to a fluid control device technical field specifically is a direct double-seat control flap.

Background

The valve is a device for controlling the direction, pressure and flow of fluid in a fluid system, the valve is a device for controlling the flow or stopping of media in pipes and equipment and controlling the flow, the valve can be used for controlling the flow of various fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like, the valve is a control part in a pipeline fluid conveying system, is used for changing the flow section of a passage and the flow direction of the media, has the functions of diversion, stopping, throttling, non-return, diversion, overflow pressure relief and the like, the valve can be used for controlling the flow of various fluids such as water, steam, oil products, gas, slurry, various corrosive media, liquid metal, radioactive fluid and the like, and the control of the valve can adopt various transmission modes such as manual operation, electric operation, hydraulic operation, pneumatic operation, turbine operation, electromagnetic operation and the like, Electro-hydraulic, pneumatic-hydraulic, etc.; the valve can be operated according to the preset requirement under the action of pressure, temperature or other forms of sensing signals, or can be simply opened or closed without depending on the sensing signals, and the valve can make the opening and closing piece perform lifting, sliding, swinging or rotating motion by depending on a driving or automatic mechanism, so that the size of the flow passage area of the valve can be changed to realize the control function of the valve.

The liquid in the oil and gas transmission pipeline has strong corrosivity, a shaft and a sealing ring are arranged on the pipeline of a butterfly valve, a gate valve, a ball valve and the like which are used at present, a rotary closing mode is adopted, the valve cannot block fluid at the first time when the pipeline leaks, and the shaft, the sealing ring and the like which are arranged are easily corroded by the fluid, so that an electric valve can be cut off at the first time, but the electric valve is complex in structure and more difficult to use in a humid place, and when the valve is used for explosive media, explosion-proof measures are needed.

The valve disclosed in chinese utility model patent application publication specification CN 105864446 a, this valve, though, seal the pipeline, prevent to leak, the valve does not have axle and rubber, prevent to corrode, but this valve, when closing, the depression bar receives reset spring's tension and the effect of rivers pressure simultaneously, the braking force that needs to use is great, the operation is inconvenient, and when the valve was closed, the locking spring was in compression state all the time, long-term use, reset spring can relax gradually, influence the life of valve and be difficult to adjust out the shortcoming of water size.

SUMMERY OF THE UTILITY MODEL

The not enough to prior art, the utility model provides a direct double seat control flap has solved the problem of proposing among the above-mentioned background art.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a through double-seat control valve comprises a valve body, a valve seat, a sealing shell, a control seat, a valve rod, a base, a positioning piece, a positioning hole, a valve body, a water outlet channel, a water outlet bend, a guide groove and a connecting groove, wherein the two ends of the valve body are respectively provided with a water inlet cavity and a water outlet cavity, the valve seat is positioned inside the valve body, the sealing shell is positioned at the top of the valve body, the valve rod is respectively connected with the valve body, the valve seat, the sealing shell and the control seat, the bottom of the valve body is fixedly connected with the base, the bottom of the base is fixedly connected with the base in an inserting mode, the positioning piece is fixedly inserted at the top end of the positioning piece, the valve body is communicated with the valve seat, the cavity, the water outlet channel, the water outlet bend, the guide groove and the connecting groove are respectively arranged inside the, the improved water-saving valve is characterized in that the control seat is fixedly connected with the top of the sealing plug through a connecting bottom plate, an adjusting sleeve is rotatably connected inside the control seat, an adjusting thread is arranged on the outer surface of the valve rod inside the adjusting sleeve, the valve rod is connected with the inner wall of the adjusting sleeve through the adjusting thread, the outer surface of the valve rod inside the metal sleeve is movably connected with the inner wall of the metal sleeve, a valve core and a guide cylinder are fixedly sleeved on the outer surface of the valve rod inside the valve body inner cavity respectively, the valve core is movably connected with a water outlet channel, the guide cylinder is movably connected with a guide groove, and the bottom end of the guide cylinder is.

Optionally, the both sides of valve body are seted up respectively and are used for installing the linking port of external pipeline and the fixed orifices that is used for fixed valve body, linking port is linked together with the intake antrum, the top of adjusting collar runs through and extends to the top of control seat, the one end fixedly connected with handle that the adjusting collar is located the control seat top.

Optionally, the cavity is located in a central region of an inner cavity of the valve seat, the top of the valve seat is communicated with the water outlet channel, one side of the water outlet channel, which is close to the water outlet cavity, is communicated with the water outlet curved channel, the bottom of the valve seat is communicated with the water outlet curved channel, the water outlet curved channel is communicated with the water outlet cavity, and the connecting groove is respectively communicated with the cavity and the water inlet cavity.

Optionally, the top of the valve core is fixedly connected with an upper end cover, the upper end cover is fixedly sleeved with the outer surface of the valve rod, and the outer diameter value of the upper end cover is larger than the inner diameter value of the water outlet channel.

Optionally, the bottom end of the guide cylinder is fixedly connected with a lower end cover, the lower end cover is fixedly sleeved with the outer surface of the valve rod, and the outer diameter value of the lower end cover is larger than the inner diameter value of the guide groove.

Optionally, the inner wall of the adjusting sleeve is provided with an internal thread matched with the adjusting thread, and the adjusting sleeve is in threaded connection with the valve rod through the internal thread.

Optionally, when the valve body is in an open state, the valve core extends to the top of the valve seat, the water inlet cavity, the water outlet channel, the water outlet bend and the water outlet cavity are sequentially communicated, and the bottom end of the valve rod is separated from the positioning hole.

Optionally, when the valve body is in a closed state, the valve core is completely located inside the water outlet channel, the water outlet channel is disconnected from the water outlet curved channel through the valve core, and the bottom end of the guide cylinder extends to the bottom of the valve seat.

The utility model provides a straight-through double-seat control valve possesses following beneficial effect:

1. this straight-through double-seat control valve through sealed shell and metal covering cooperation, can make the valve body be in the encapsulated situation with external and sealed shell, effectively avoids the interior liquid leakage of pipeline, through the oil inlet, can in time supply lubricating oil, prevents that the unable normal rotation of valve rod from adjusting, has connect the case through the fixed cover in the valve rod surface to and intake antrum, cavity, play water passageway, go out the cooperation between water bend and the play water cavity, do not have axle and rubber, when guaranteeing valve control effect, prevent to corrode.

2. This straight-through double-seat control valve, through adjusting screw thread and adjusting collar cooperation, replace reset spring, rotate the handle, make the valve rod downstream, when closing the valve, no reset spring's tension effect, can effectively avoid the depression bar to receive reset spring's tension and water pressure effect simultaneously, need use and increase the brake force, the problem of inconvenient operation, when avoiding the valve to close, the locking spring is in compression state all the time, long-term use, reset spring can relax gradually, influence valve life's problem, through the range of rotating the handle, can adjust the area of play water bend and intake antrum intercommunication, realize the effect of effective regulation rivers size.

3. This straight-through double-seat control valve has through the fixed guide cylinder that has cup jointed at the valve rod surface to and the cooperation between guide way and the lower end cover, can make valve rod and case keep the stable position, when avoiding the valve to open, the case breaks away from out the water passageway, and under rivers pressure, leads to valve rod and case position skew, can not normally close the problem of valve, improves this straight-through double-seat control valve job stabilization nature.

Drawings

FIG. 1 is a schematic structural view of the valve body of the present invention in an open state;

FIG. 2 is a schematic structural view of the valve body of the present invention in a closed state;

FIG. 3 is a schematic view of the valve rod structure of the present invention;

FIG. 4 is a schematic view of the valve seat structure of the present invention;

fig. 5 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.

In the figure: 1. a valve body; 11. a water inlet cavity; 12. a water outlet cavity; 13. a connection port; 14. a fixing hole; 2. a base; 21. a positioning member; 210. positioning holes; 3. a valve stem; 31. adjusting the screw thread; 32. a valve core; 320. an upper end cover; 33. a guide cylinder; 330. a lower end cover; 4. a valve seat; 41. a cavity; 410. a water outlet channel; 411. a water outlet bend; 42. a guide groove; 43. connecting grooves; 5. a control seat; 51. connecting the bottom plate; 52. an adjusting sleeve; 6. sealing the shell; 61. a metal sheath; 610. an oil inlet; 7. and (4) sealing the plug.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 to 5, the present invention provides a technical solution: a straight-through double-seat control valve comprises a valve body 1, a valve seat 4, a sealing shell 6, a control seat 5 and a valve rod 3, wherein the two ends of the valve body 1 are respectively provided with a water inlet cavity 11 and a water outlet cavity 12, the valve seat 4 is arranged inside the valve body 1, the sealing shell 6 is arranged on the top of the valve body 1, the control seat 5 is arranged on the top of the sealing shell 6, the valve body 1, the valve seat 4, the sealing shell 6 and the control seat 5 are respectively connected with the valve body 3, the bottom of the valve body 1 is fixedly connected with a base 2, the bottom of the base 2 is fixedly inserted with a positioning piece 21, the top end of the positioning piece 21 is provided with a positioning hole 210, the valve body 1 is communicated with the valve seat 4, the inside of the valve seat 4 is respectively provided with a cavity 41, a water outlet channel 410, a water outlet bend 411, a guide groove 42 and a connecting groove 43, the cavity 41, the water outlet bend 411 is communicated with the water outlet cavity 12, the connecting groove 43 is respectively communicated with the cavity 41 and the water inlet cavity 11, the area of the communication between the water outlet bend 411 and the water inlet cavity 11 can be adjusted by rotating the range of the handle, so as to realize the effect of effectively adjusting the size of water flow, the top end of the valve body 1 is fixedly connected with the bottom end of the sealing shell 6, the metal sleeve 61 is movably arranged inside the sealing shell 6, the outer surface of the sealing shell 6 is provided with an oil inlet 610, the top end of the sealing shell 6 is inserted with the sealing plug 7, the valve body 1, the outside and the sealing shell 6 can be in a closed state through the matching of the sealing shell 6 and the metal sleeve 61, so as to effectively avoid the liquid leakage in the pipeline, the lubricating oil can be supplemented in time through the oil inlet 610, the valve rod 3 can not be adjusted in a normal rotation manner, the bottom of the, the interior of the control seat 5 is rotatably connected with an adjusting sleeve 52, two sides of the valve body 1 are respectively provided with a connecting port 13 for installing an external pipeline and a fixing hole 14 for fixing the valve body 1, the connecting port 13 is communicated with the water inlet cavity 11, the top end of the adjusting sleeve 52 penetrates through and extends to the top of the control seat 5, one end of the adjusting sleeve 52, which is positioned at the top of the control seat 5, is fixedly connected with a handle, the outer surface of the valve rod 3, which is positioned inside the adjusting sleeve 52, is provided with an adjusting thread 31, the adjusting thread 31 is matched with the adjusting sleeve 52 to replace a return spring, the handle is rotated to enable the valve rod 3 to move downwards, when the valve is closed, the tension action of the return spring is avoided, the pressure rod can be effectively prevented from being simultaneously subjected to the tension and water flow pressure action of the return spring, the brake force needs to be, the long-term use, the reset spring can relax gradually, influence the problem of the valve life, the valve rod 3 is connected with the inner wall thread of the adjusting sleeve 52 through the adjusting thread 31, the outer surface of the valve rod 3 inside the metal sleeve 61 is movably connected with the inner wall of the metal sleeve 61, the outer surface of the valve rod 3 inside the cavity of the valve body 1 is fixedly sleeved with the valve core 32 and the guide cylinder 33 respectively, the top of the valve core 32 is fixedly connected with the upper end cover 320, the upper end cover 320 is fixedly sleeved with the outer surface of the valve rod 3, the outer diameter value of the upper end cover 320 is larger than the inner diameter value of the water outlet channel 410, the bottom of the guide cylinder 33 is fixedly connected with the lower end cover 330, the lower end cover 330 is fixedly sleeved with the outer surface of the valve rod 3, the outer diameter value of the lower end cover 330 is larger than the inner diameter value of the guide groove 42, the inner wall of the, the valve core 32 is movably connected with the water outlet channel 410, the guide cylinder 33 is movably connected with the guide groove 42, the bottom end of the guide cylinder 33 is movably connected with the positioning hole 210, when the valve body 1 is in an open state, the valve core 32 extends to the top of the valve seat 4, the water inlet cavity 11, the cavity 41, the water outlet channel 410, the water outlet curved channel 411 and the water outlet cavity 12 are sequentially communicated, the bottom end of the valve rod 3 is separated from the positioning hole 210, when the valve body 1 is in a closed state, the valve core 32 is completely positioned inside the water outlet channel 410, the water outlet channel 410 is separated from the water outlet curved channel 411 through the valve core 32, the bottom end of the guide cylinder 33 extends to the bottom of the valve seat 4, the valve core 32 is fixedly sleeved on the outer surface of the valve rod 3, and the matching among the water inlet cavity 11, the cavity 41, the water outlet channel 410, the water outlet curved channel 411 and the water outlet cavity 12 is free of shaft, and the cooperation between the guide groove 42 and the lower end cover 330 can keep the valve rod 3 and the valve core 32 in stable positions, so that the problem that the valve cannot be normally closed due to the fact that the valve core 32 is separated from the water outlet channel 410 and the position of the valve rod 3 and the position of the valve core 32 are deviated under the pressure of water flow when the valve is opened is avoided, and the working stability of the straight-through double-seat control valve is improved.

In summary, when the straight-through double-seat control valve is used, the handle is rotated clockwise to match with the adjusting thread 31 and the adjusting sleeve 52, so that the valve rod 3 moves upwards to further drive the valve core 32 to move upwards, under the matching of the water inlet cavity 11, the cavity 41, the water outlet channel 410, the water outlet bend 411 and the water outlet cavity 12, the valve is opened, water flows sequentially flow out along the water inlet cavity 11, the cavity 41, the water outlet channel 410, the water outlet bend 411 and the water outlet cavity 12, the handle is rotated anticlockwise, the valve rod 3 moves downwards, the valve core 32 is further driven to move downwards, the water outlet bend 411 is closed through the blockage of the valve core 32, so that the valve is closed and the water flow is not circulated, and simultaneously, by the guide cylinder 33, and the cooperation between the guide groove 42 and the lower cap 330, the valve rod 3 and the valve core 32 can be kept at stable positions, and the valve core 32 is prevented from being separated from the water outlet channel 410 when the valve is opened, so that the function of controlling water outlet of the valve is completed.

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

Claims

1. The utility model provides a straight-through double-seat control valve, includes that valve body (1) of intake antrum (11) and play water cavity (12) are seted up respectively at both ends, is located inside disk seat (4) of valve body (1), is located sealed shell (6) at valve body (1) top, is located control seat (5) at sealed shell (6) top and valve rod (3) that are connected with valve body (1), disk seat (4), sealed shell (6) and control seat (5) respectively, its characterized in that: the bottom of the valve body (1) is fixedly connected with a base (2), the bottom of the base (2) is fixedly spliced with a positioning piece (21), the top end of the positioning piece (21) is provided with a positioning hole (210), the valve body (1) is communicated with a valve seat (4), the inside of the valve seat (4) is respectively provided with a cavity (41), a water outlet channel (410), a water outlet bend (411), a guide groove (42) and a connecting groove (43), the top end of the valve body (1) is fixedly connected with the bottom end of a sealing shell (6), the inside of the sealing shell (6) is movably provided with a metal sleeve (61), the outer surface of the sealing shell (6) is provided with an oil inlet (610), the top end of the sealing shell (6) is spliced with a sealing base plate (7), the bottom of the control base (5) is fixedly connected with a connecting bottom plate (51), and the sealing plug (5) is fixedly connected with the top of the sealing, the inner part of the control seat (5) is rotatably connected with an adjusting sleeve (52), the outer surface of the valve rod (3) located inside the adjusting sleeve (52) is provided with an adjusting thread (31), the valve rod (3) is in threaded connection with the inner wall of the adjusting sleeve (52) through the adjusting thread (31), the outer surface of the valve rod (3) located inside the metal sleeve (61) is movably connected with the inner wall of the metal sleeve (61), the outer surface of the valve rod (3) located inside the inner cavity of the valve body (1) is respectively and fixedly sleeved with a valve core (32) and a guide cylinder (33), the valve core (32) is movably connected with a water outlet channel (410), the guide cylinder (33) is movably connected with a guide groove (42), and the bottom end of the guide cylinder (33) is movably connected with a positioning hole (210).

2. A straight-through double seat control valve as claimed in claim 1, wherein: the utility model discloses a valve body, including valve body (1), linking port (13) and the fixed orifices (14) that are used for installing external pipeline are seted up respectively to the both sides of valve body (1), linking port (13) are linked together with intake antrum (11), the top of adjusting collar (52) is run through and is extended to the top of control seat (5), one end fixedly connected with handle that adjusting collar (52) are located control seat (5) top.

3. A straight-through double seat control valve as claimed in claim 1, wherein: the cavity (41) is located in the central area of the inner cavity of the valve seat (4), the top of the valve seat (4) is communicated with the water outlet channel (410), one side, close to the water outlet cavity (12), of the water outlet channel (410) is communicated with the water outlet bent channel (411), the bottom of the valve seat (4) is communicated with the water outlet bent channel (411), the water outlet bent channel (411) is communicated with the water outlet cavity (12), and the connecting groove (43) is communicated with the cavity (41) and the water inlet cavity (11) respectively.

4. A straight-through double seat control valve as claimed in claim 1, wherein: the top of the valve core (32) is fixedly connected with an upper end cover (320), the upper end cover (320) is fixedly sleeved with the outer surface of the valve rod (3), and the outer diameter value of the upper end cover (320) is larger than the inner diameter value of the water outlet channel (410).

5. A straight-through double seat control valve as claimed in claim 1, wherein: the bottom end of guide cylinder (33) fixedly connected with lower end cover (330), lower end cover (330) cup joints with the surface mounting of valve rod (3), the external diameter value of lower end cover (330) is greater than the internal diameter value of guide way (42).

6. A straight-through double seat control valve as claimed in claim 1, wherein: the inner wall of the adjusting sleeve (52) is provided with an internal thread matched with the adjusting thread (31), and the adjusting sleeve (52) is in threaded connection with the valve rod (3).

7. A straight-through double seat control valve as claimed in claim 1, wherein: the valve core (32) extends to the top of the valve seat (4), the water inlet cavity (11), the cavity (41), the water outlet channel (410), the water outlet bent passage (411) and the water outlet cavity (12) are sequentially communicated, and the bottom end of the valve rod (3) is separated from the positioning hole (210).