CN115059786A - Micro-resistance check valve - Google Patents

Micro-resistance check valve Download PDF

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Publication number
CN115059786A
CN115059786A CN202210515231.0A CN202210515231A CN115059786A CN 115059786 A CN115059786 A CN 115059786A CN 202210515231 A CN202210515231 A CN 202210515231A CN 115059786 A CN115059786 A CN 115059786A
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CN
China
Prior art keywords
connecting rod
valve body
rod
valve
baffle
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Pending
Application number
CN202210515231.0A
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Chinese (zh)
Inventor
祁帜
张文凯
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Individual
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Individual
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Priority to CN202210515231.0A priority Critical patent/CN115059786A/en
Publication of CN115059786A publication Critical patent/CN115059786A/en
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    • 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
    • F16K15/182—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism
    • F16K15/1821—Check valves with actuating mechanism; Combined check valves and actuated valves with actuating mechanism for check valves with a hinged or pivoted closure member
    • 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/221—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves specially adapted operating means 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
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2261—Shaping or arrangements of the sealing the sealing being arranged on the valve member
    • 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
    • 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
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/535—Mechanical actuating means with toothed gearing for rotating 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
    • F16K31/44—Mechanical actuating means
    • F16K31/53—Mechanical actuating means with toothed gearing
    • F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
    • 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
    • F16K47/00—Means in valves for absorbing fluid energy
    • F16K47/08—Means in valves for absorbing fluid energy for decreasing pressure or noise level and having a throttling member separate from the closure member, e.g. screens, slots, labyrinths

Abstract

The invention relates to the technical field of fluid check valves, in particular to a micro-resistance check valve which comprises a front-end valve body, a middle-end valve body, a rear-end valve body, a triggering device, a central device and a clamping device. The trigger device is arranged, so that the force storage spring in the central device stores force, and the aim of triggering the working device is fulfilled; the central device is arranged, so that micro resistance and quick response of the butterfly valve are realized; through the arrangement of the clamping device, the power storage spring is ensured to be in a power storage state when the valve body starts to work, and the purpose of resetting all devices is achieved after the work is finished.

Description

Micro-resistance check valve
Technical Field
The invention relates to the technical field of fluid check valves, in particular to a micro-resistance check valve.
Background
The check valve belongs to the automatic valve category, also called check valve, reflux valve or isolation valve, the valve clack motion mode is divided into lift type and swing type. The lift check valve is similar to a stop valve in structure, only a valve rod for driving a valve clack is lacked, a medium flows in from the lower side of an inlet end and flows out from the upper side of an outlet end, and when the inlet pressure is greater than the sum of the weight of the valve clack and the flow resistance of the valve clack, the valve is opened. On the contrary, the valve is closed when the medium flows backwards, the swing check valve is provided with a valve clack which is obliquely arranged and can rotate around a shaft, the working principle is similar to that of the lifting check valve, the check valve is commonly used as a bottom valve of a water pumping device to prevent water from flowing backwards, and the check valve is combined with a stop valve to play a role in safety isolation.
The check valve is a component widely adopted in fluids such as liquid, gas and the like, so that the flow direction of the fluid only flows along a required direction, the fluid cannot flow backwards, the energy efficiency and energy consumption are influenced by the magnitude of fluid resistance, and for example, the problems that the existing check valve is poor in sealing performance, poor in sensitivity and the like generally exist in the existing check valve.
Disclosure of Invention
To solve the problems in the prior art, the present invention provides a micro resistance check valve. The problems of overlarge fluid resistance, poor sensitivity and poor sealing performance of the check valve in the conventional check valve can be solved.
The technical scheme adopted by the invention for solving the technical problems is as follows: a micro-resistance check valve characterized in that: comprises a front valve body, a middle valve body, a rear valve body, a triggering device, a central device and a clamping device;
one end of the front end valve body flange is in threaded connection with one end of a middle end valve body, the other end of the middle end valve body is in threaded connection with one end of a rear end valve body, a trigger device is fixedly installed on the outer surface of the front end valve body, a central device is fixedly installed on the outer surface of the middle end valve body, and a clamping device is fixedly installed on the outer surface of the rear end valve body;
specifically, the center device includes: the improved butterfly valve comprises an upper sealing cover, a butterfly valve bin, a rotary rod, a force storage spring, a gear sleeve, a butterfly valve rod, a butterfly valve sealing ring and a stop block, wherein the butterfly valve bin is fixedly mounted on the smooth part of the outer surface of a middle-end valve body, the upper sealing cover is fixedly connected to the butterfly valve bin, the lower side of the upper sealing cover is fixedly connected with the stop block, the middle of the upper sealing cover is rotatably connected with one end of the rotary rod, the force storage spring is fixedly connected to the rotary rod, the outer side face of the force storage spring is abutted to the stop block, the gear sleeve is fixedly connected to the rotary rod, the gear sleeve is fixedly connected to the lower end of the force storage spring, the other end of the rotary rod is fixedly connected with one end of the butterfly valve rod, the other end of the butterfly valve rod is fixedly connected with the butterfly valve, and the outer side face of the butterfly valve is fixedly mounted with the butterfly valve sealing ring.
The front end valve body includes: first rotating barrier, bolt, first sealing washer, the inside of front end valve body rotates and is connected with first rotating barrier, the junction fixed mounting of front end valve body and middle-end valve body has first sealing washer.
The back end valve body includes: the rear end valve body and the middle end valve body are fixedly provided with a second sealing ring at the joint.
The triggering device comprises: first baffle branch, first connecting rod, second connecting rod, mount, third connecting rod, fourth connecting rod, rack, the one end of the first baffle branch of fixedly connected with is gone up at first rotating barrier's board center, rotate the one end that is connected with first connecting rod on the other end of first baffle branch, rotate the one end that is connected with the second connecting rod through the pin joint on the other end of first connecting rod, rotate the one end that is connected with the third connecting rod through the pin joint on the other end of second connecting rod, the third connecting rod passes through the mount, fixed mounting has the mount on the flange of front end valve body, rotate the one end that is connected with the fourth connecting rod through the pin joint on the other end of third connecting rod, the other end of fourth connecting rod rotates and is connected with the rack.
The clamping device includes: second baffle branch, fifth connecting rod, connecting pin, sixth connecting rod, seventh connecting rod, supporting rod, the one end of fixedly connected with second baffle branch is gone up in the board center of second rotating barrier, rotate the one end that is connected with the fifth connecting rod on the other end of second baffle branch, rotate the one end that is connected with the sixth connecting rod through the pin junction on the other end of fifth connecting rod, rotate the one end that is connected with the seventh connecting rod through the pin junction on the other end of sixth connecting rod, it is connected with the supporting rod to rotate on the other end of seventh connecting rod.
First baffle branch, first connecting rod, second connecting rod, mount, third connecting rod, fourth connecting rod, rack among the trigger device all follow valve body central line bilateral symmetry, second baffle branch, fifth connecting rod, connecting pin, sixth connecting rod, seventh connecting rod, the clamping rod among the clamping device all follow valve body central line bilateral symmetry, trigger device and clamping device all accomplish work through bilateral symmetry's structure.
The pin connections are all connecting pin connections.
Threaded connection is bolted connection, the bolt respectively is six evenly distributed at front end valve body and middle-end valve body junction and the junction of rear end valve body and middle-end valve body.
The invention has the beneficial effects that:
1: through setting up trigger device, when first rotating barrier opened, drive first baffle branch and rotate to the valve body outside, first baffle branch drives first connecting rod and rotates, and first connecting rod drives the second connecting rod and rotates, and the second connecting rod drives the third connecting rod and removes in the mount, and the third connecting rod drives the fourth connecting rod and rotates, finally drives the rack and removes to the valve body outside, rotates the tooth cover in the maincenter device, makes the power storage spring in the maincenter device hold power, reaches the purpose that triggers whole valve body device.
2: through the arrangement of the central device, when fluid enters the middle-end valve body from the front-end valve body, the fluid generates impact force to impact the butterfly valve, and the triggering device acts on the gear sleeve to drive the rotating rod to rotate before the butterfly valve is impacted, so that the butterfly valve is driven to rotate, the butterfly valve is opened in advance, and the butterfly valve is only subjected to small impact force, so that the aim of reducing fluid resistance is fulfilled. At the moment, the power storage spring abuts against the stop block due to the rotation of the rotating rod and enters a power storage state, when fluid stops flowing or works, the power storage spring releases power, all devices automatically reset, the butterfly valve is closed, response is quick, and the sensitivity of the check valve is improved.
3: through setting up clamping device, second baffle branch rotates to the valve body outside, second baffle branch drives the rotation of fifth connecting rod, the fifth connecting rod drives the rotation of sixth connecting rod, the sixth connecting rod drives the rotation of seventh connecting rod, finally, it is close to the rotary rod in the central pivot device to drive the supporting rod, final supporting rod centre gripping rotary rod, make and hold the power spring and keep holding power state, when accomplishing work, the impact resistance that the second rotating barrier received disappears, the second rotating barrier is closed, the supporting rod relaxes, hold the power spring and relax, finally, lead to trigger device to close, reach the purpose that makes all mechanisms reset.
4: when the trigger device starts to work, the rack moves towards the outer side of the valve body, the gear sleeve in the central pivot device is rotated, the force storage spring in the central pivot device stores force, the butterfly valve is opened, the valve body starts to work, and finally the clamping rod clamps the rotating rod, so that the force storage spring is kept in a force storage state.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic perspective view of a micro-resistance check valve according to the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;
FIG. 4 is an enlarged view of a portion of FIG. 3 at B;
FIG. 5 is a top view of FIG. 1;
fig. 6 is a three-dimensional perspective view of fig. 1 with the housing removed.
In the figure: 1. a front end valve body; 2. a middle valve body; 3. a rear end valve body; 4. a trigger device; 5. a hub device; 6. a clamping device; 11 a first rotating baffle; 12. a bolt; 13. a first seal ring; 31. a second rotating barrier; 32. a second seal ring; 41. a first baffle strut; 42. a first link; 43. a second link; 44. a fixed mount; 45. a third link; 46. a fourth link; 47. a rack; 51. an upper sealing cover; 52. a butterfly valve cabin; 53. rotating the rod; 54. a power storage spring; 55. a gear sleeve; 56. a butterfly valve stem; 57. a butterfly valve; 58. a butterfly valve sealing ring; 59. a stopper; 61. a second baffle strut; 62. a fifth link; 63. a connecting pin; 64. a sixth link; 65. a seventh connecting rod; 66. and a clamping rod.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-6, a micro-resistance check valve comprises a front valve body 1, a middle valve body 2, a rear valve body 3, a trigger device 4, a central device 5 and a clamping device 6;
one end of a flange of the front-end valve body 1 is in threaded connection with one end of a middle-end valve body 2, the other end of the middle-end valve body 2 is in threaded connection with one end of a rear-end valve body 3, a trigger device 4 is fixedly arranged on the outer surface of the front-end valve body 1, a central device 5 is fixedly arranged on the outer surface of the middle-end valve body 2, and a clamping device 6 is fixedly arranged on the outer surface of the rear-end valve body 3;
the center device 5 includes: the upper sealing cover 51, the butterfly valve chamber 52, the rotating rod 53, the power storage spring 54, the gear sleeve 55, the butterfly valve rod 56, the butterfly valve 57, the butterfly valve sealing ring 58 and the stop block 59, wherein the butterfly valve chamber 52 is fixedly installed on the smooth part of the outer surface of the middle-end valve body 2, the upper sealing cover 51 is fixedly connected onto the butterfly valve chamber 52, the stop block 59 is fixedly connected onto the lower side of the upper sealing cover 51, the middle part of the upper sealing cover 51 is rotatably connected with one end of the rotating rod 53, the power storage spring 54 is fixedly connected onto the rotating rod 53, the outer side surface of the power storage spring 54 is abutted against the stop block 59, the gear sleeve 55 is fixedly connected onto the rotating rod 53, the gear sleeve 55 is fixedly connected onto the lower end of the power storage spring 54, one end of the butterfly valve rod 56 is fixedly connected onto the other end of the rotating rod 53, the other end of the butterfly valve rod 56 is fixedly connected with the butterfly valve 57, the outer side surface of the butterfly valve sealing ring 58 is fixedly installed onto the butterfly valve, when fluid passes through the front-end valve body 1 and enters the middle-end valve body 2, the fluid generates impact force to impact the butterfly valve 57, and before the butterfly valve 57 is impacted, the trigger device 4 acts on the gear sleeve 55 to drive the rotating rod 53 to rotate, so that the butterfly valve rod 56 is driven to rotate, the butterfly valve 57 is opened in advance, and the butterfly valve 57 is only impacted by small impact force, so that the aim of reducing fluid resistance is fulfilled. At this moment, the power storage spring 54 abuts against the stop block 59 due to the rotation of the rotating rod 53 and enters a power storage state, meanwhile, the power storage state is further kept due to the effect of the clamping device 6, it is ensured that fluid can smoothly pass through the middle-end valve body, when the fluid stops flowing or finishes working, the clamping device 6 is loosened, the power storage spring 54 releases power, all devices automatically reset, the butterfly valve 57 is closed, response is quick, the sensitivity of the check valve is improved, in addition, the upper sealing cover 51 adopts a detachable design, parts are convenient to overhaul and replace in time, and the butterfly valve sealing ring 58 is fixedly installed on the outer side face of the butterfly valve 57 and plays a role in second-layer sealing.
The front end valve body 1 includes: the valve comprises a first rotary baffle 11, a bolt 12 and a first sealing ring 13, wherein the first rotary baffle 11 is rotatably connected inside a front-end valve body 1, and the first sealing ring 13 is fixedly arranged at the joint of the front-end valve body 1 and a middle-end valve body 2; when fluid impacts the first rotating baffle 11, the first rotating baffle 11 is opened, meanwhile, the trigger device 4 starts to work due to the opening of the first rotating baffle 11, and the first sealing ring 13 plays a role in first-layer sealing.
The rear end valve body 3 includes: second rotating barrier 31, second sealing washer 32, the inside rotation of rear end valve body 3 is connected with second rotating barrier 31, and the junction fixed mounting of rear end valve body 3 and middle-end valve body 2 has second sealing washer 32, and when fluid impacted second rotating barrier 31, second rotating barrier 31 opened, and opening of second rotating barrier 31 made clamping device 6 begin to work simultaneously, and second sealing washer 32 plays the sealed effect of third layer.
The trigger device 4 includes: a first baffle plate support rod 41, a first connecting rod 42, a second connecting rod 43, a fixed frame 44, a third connecting rod 45, a fourth connecting rod 46 and a rack 47, wherein one end of the first baffle plate support rod 41 is fixedly connected to the plate center of the first rotary baffle plate 11, one end of the first connecting rod 42 is rotatably connected to the other end of the first baffle plate support rod 41, one end of the second connecting rod 43 is rotatably connected to the other end of the first connecting rod 42 through pin connection, one end of the third connecting rod 45 is rotatably connected to the other end of the second connecting rod 43 through pin connection, the third connecting rod 45 passes through the fixed frame 44, the fixed frame 44 is fixedly installed on a flange of the front-end valve body 1, one end of the fourth connecting rod 46 is rotatably connected to the other end of the third connecting rod 45 through pin connection, the rack 47 is rotatably connected to the other end of the fourth connecting rod 46, when the first rotary baffle plate 11 is opened, the first baffle plate support rod 41 is driven to rotate towards the outside of the valve body, the first baffle supporting rod 41 drives the first connecting rod 42 to rotate, the first connecting rod 42 drives the second connecting rod 43 to rotate, the second connecting rod 43 drives the third connecting rod 45 to move in the fixing frame 44, the third connecting rod 45 drives the fourth connecting rod 46 to rotate, finally, the rack 47 is driven to move towards the outer side of the valve body, the gear sleeve 55 in the central device 5 is rotated, the force storage spring 54 in the central device 5 stores force to achieve the purpose of triggering the whole valve body device, meanwhile, because the force for opening the first rotary baffle 11 is small, the lubricating condition is good at each position, the force can be amplified through a series of levers, and larger force is transmitted to the force storage spring 54.
The clamping device 6 comprises: a second baffle supporting rod 61, a fifth connecting rod 62, a connecting pin 63, a sixth connecting rod 64, a seventh connecting rod 65 and a clamping rod 66, wherein one end of the second baffle supporting rod 61 is fixedly connected to the center of the second rotary baffle 31, one end of the fifth connecting rod 62 is rotatably connected to the other end of the second baffle supporting rod 61, one end of the sixth connecting rod 64 is rotatably connected to the other end of the fifth connecting rod 62 through a pin connection, one end of the seventh connecting rod 65 is rotatably connected to the other end of the sixth connecting rod 64 through a pin connection, the clamping rod 66 is rotatably connected to the other end of the seventh connecting rod 65, when fluid impacts the second rotary baffle 31, the second baffle supporting rod 61 rotates towards the outside of the valve body, the second baffle supporting rod 61 drives the fifth connecting rod 62 to rotate, the fifth connecting rod 62 drives the sixth connecting rod 64 to rotate, the sixth connecting rod 64 drives the seventh connecting rod 65 to rotate, and finally drives the clamping rod 66 to approach to the rotary rod 53 in the central device 5, finally, the clamping rod 66 clamps the rotating rod 53, so that the power storage spring 54 is kept in a power storage state, when the work is completed, the impact resistance borne by the second rotating baffle 31 disappears, the second rotating baffle 31 is closed, the clamping rod 66 is loosened, the power storage spring 54 is loosened, and finally the trigger device 4 is closed, so that the purpose of resetting all mechanisms is achieved.
The first baffle supporting rod 41, the first connecting rod 42, the second connecting rod 43, the fixing frame 44, the third connecting rod 45, the fourth connecting rod 46 and the rack 47 in the trigger device 4 are bilaterally symmetrical along the center line of the valve body, the second baffle supporting rod 61, the fifth connecting rod 62, the connecting pin 63, the sixth connecting rod 64, the seventh connecting rod 65 and the clamping rod 66 in the clamping device 6 are bilaterally symmetrical along the center line of the valve body, and the trigger device 4 and the clamping device 6 complete work through bilaterally symmetrical structures.
The pin connections are all connection pins 63 connections.
The threaded connection is bolt 12 connection, and the bolts 12 are respectively six evenly distributed at the joint of the front end valve body 1 and the middle end valve body 2 and the joint of the rear end valve body 3 and the middle end valve body 2.
The working principle is as follows: when fluid impacts the first rotating baffle 11, the first rotating baffle 11 is opened, meanwhile, the trigger device 4 starts to work due to the opening of the first rotating baffle 11, and the first sealing ring 13 plays a role in first-layer sealing.
When the first rotary baffle 11 is opened, the first baffle supporting rod 41 is driven to rotate towards the outer side of the valve body, the first baffle supporting rod 41 drives the first connecting rod 42 to rotate, the first connecting rod 42 drives the second connecting rod 43 to rotate, the second connecting rod 43 drives the third connecting rod 45 to move in the fixing frame 44, the third connecting rod 45 drives the fourth connecting rod 46 to rotate, finally the rack 47 is driven to move towards the outer side of the valve body, the gear sleeve 55 in the central pivot device 5 is rotated, the force storage spring 54 in the central pivot device 5 stores force, the purpose of triggering the whole valve body device is achieved, meanwhile, the force for opening the first rotary baffle 11 is small, the lubricating conditions at each position are good, the force can be amplified through a series of levers, the large force is transmitted to the force storage spring 54, and by the method, the triggering is more sensitive and quicker, and meanwhile, the interference of the large force can be resisted.
When fluid passes through the front end valve body 1 and enters the middle end valve body 2, impact force is generated by the fluid to impact the butterfly valve 57, and before the impact is received by the butterfly valve 57, the triggering device 4 acts on the gear sleeve 55 to drive the rotating rod 53 to rotate, so that the butterfly valve rod 56 is driven to rotate, the butterfly valve 57 is opened in advance, and the butterfly valve 57 is only subjected to small impact force, so that the purpose of reducing fluid resistance is achieved. At this moment, the power storage spring 54 is abutted against the stop block 59 due to the rotation of the rotating rod 53 and enters a power storage state, meanwhile, the power storage state is further kept due to the effect of the clamping device 6, the fluid can be ensured to smoothly pass through the middle-end valve body, when the fluid stops flowing or finishes working, the clamping device 6 is loosened, the power storage spring 54 releases the force, all the devices are automatically reset, the butterfly valve 57 is closed, response is quick, and the sensitivity of the check valve is improved, in addition, the upper sealing cover 51 adopts a detachable design, the maintenance and timely replacement of parts are facilitated, and the butterfly valve sealing ring 58 is fixedly installed on the outer side surface of the butterfly valve 57 to play a role in second-layer sealing.
When fluid impacts the second rotating baffle 31, the second rotating baffle 31 is opened, and the clamping device 6 starts to work due to the opening of the second rotating baffle 31, and the second sealing ring 32 plays a role in third-layer sealing.
When fluid impacts the second rotating baffle 31, the second baffle supporting rod 61 rotates towards the outside of the valve body, the second baffle supporting rod 61 drives the fifth connecting rod 62 to rotate, the fifth connecting rod 62 drives the sixth connecting rod 64 to rotate, the sixth connecting rod 64 drives the seventh connecting rod 65 to rotate, the clamping rod 66 is finally driven to approach the rotating rod 53 in the central device 5, and finally the clamping rod 66 clamps the rotating rod 53, so that the force storage spring 54 keeps in a force storage state.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. A micro-resistance check valve characterized in that: comprises a front valve body (1), a middle valve body (2), a rear valve body (3), a trigger device (4), a central pivot device (5) and a clamping device (6);
one end of a flange of the front-end valve body (1) is in threaded connection with one end of a middle-end valve body (2), the other end of the middle-end valve body (2) is in threaded connection with one end of a rear-end valve body (3), a trigger device (4) is fixedly arranged on the outer surface of the front-end valve body (1), a center device (5) is fixedly arranged on the outer surface of the middle-end valve body (2), and a clamping device (6) is fixedly arranged on the outer surface of the rear-end valve body (3);
the center device (5) includes: the upper sealing cover (51), the butterfly valve cabin (52), a rotating rod (53), a power storage spring (54), a gear sleeve (55), a butterfly valve rod (56), a butterfly valve (57), a butterfly valve sealing ring (58) and a stop block (59), wherein the butterfly valve cabin (52) is fixedly installed on the smooth part of the outer surface of the middle valve body (2), the upper sealing cover (51) is fixedly connected onto the butterfly valve cabin (52), the stop block (59) is fixedly connected onto the lower side of the upper sealing cover (51), one end of the rotating rod (53) is rotatably connected onto the middle part of the upper sealing cover (51), the power storage spring (54) is fixedly connected onto the rotating rod (53), the outer side surface of the power storage spring (54) is abutted against the stop block (59), the gear sleeve (55) is fixedly connected onto the rotating rod (53), and the gear sleeve (55) is fixedly connected onto the lower end of the power storage spring (54), the other end of the rotating rod (53) is fixedly connected with one end of a butterfly valve rod (56), the other end of the butterfly valve rod (56) is fixedly connected with a butterfly valve (57), and a butterfly valve sealing ring (58) is fixedly mounted on the outer side surface of the butterfly valve (57).
2. A micro-resistance check valve as claimed in claim 1, wherein: the front end valve body (1) includes: first rotating barrier (11), bolt (12), first sealing washer (13), the inside rotation of front end valve body (1) is connected with first rotating barrier (11), the junction fixed mounting of front end valve body (1) and well end valve body (2) has first sealing washer (13).
3. A micro-resistance check valve as claimed in claim 2, wherein: the rear end valve body (3) includes: second rotating barrier (31), second sealing washer (32), the inside rotation of rear end valve body (3) is connected with second rotating barrier (31), the junction fixed mounting of rear end valve body (3) and well end valve body (2) has second sealing washer (32).
4. A micro-resistance check valve as claimed in claim 3, wherein: the triggering device (4) comprises: the baffle structure comprises a first baffle supporting rod (41), a first connecting rod (42), a second connecting rod (43), a fixing frame (44), a third connecting rod (45), a fourth connecting rod (46) and a rack (47), wherein one end of the first baffle supporting rod (41) is fixedly connected to the plate center of a first rotary baffle (11), one end of the first connecting rod (42) is rotatably connected to the other end of the first baffle supporting rod (41), one end of the second connecting rod (43) is rotatably connected to the other end of the first connecting rod (42) through pin connection, one end of the third connecting rod (45) is rotatably connected to the other end of the second connecting rod (43) through pin connection, the third connecting rod (45) passes through the fixing frame (44), the fixing frame (44) is fixedly mounted on a flange of the front-end valve body (1), one end of the fourth connecting rod (46) is rotatably connected to the other end of the third connecting rod (45) through pin connection, the other end of the fourth connecting rod (46) is rotatably connected with a rack (47).
5. The micro-resistance check valve of claim 4, wherein: the clamping device (6) comprises: second baffle branch (61), fifth connecting rod (62), connecting pin (63), sixth connecting rod (64), seventh connecting rod (65), supporting rod (66), fixedly connected with second baffle branch (61)'s one end is gone up in the board center of second rotating barrier (31), rotate the one end that is connected with fifth connecting rod (62) on the other end of second baffle branch (61), rotate the one end that is connected with sixth connecting rod (64) through the pin junction on the other end of fifth connecting rod (62), rotate the one end that is connected with seventh connecting rod (65) through the pin junction on the other end of sixth connecting rod (64), it is connected with supporting rod (66) to rotate on the other end of seventh connecting rod (65).
6. A micro-resistance check valve as claimed in claim 5, wherein: first baffle branch (41), first connecting rod (42), second connecting rod (43), mount (44), third connecting rod (45), fourth connecting rod (46), rack (47) in trigger device (4) all follow valve body central line bilateral symmetry, second baffle branch (61), fifth connecting rod (62), connecting pin (63), sixth connecting rod (64), seventh connecting rod (65), clamping rod (66) in clamping device (6) all follow valve body central line bilateral symmetry, trigger device (4) and clamping device (6) all accomplish work through bilateral symmetry's structure.
7. A micro-resistance check valve as claimed in claim 6, wherein: the pin connections are all connected by connecting pins (63).
8. A micro-resistance check valve as claimed in claim 7, wherein: threaded connection is bolt (12) connection, bolt (12) respectively are six evenly distributed at front end valve body (1) and well end valve body (2) junction and rear end valve body (3) and the junction of well end valve body (2).
CN202210515231.0A 2022-05-11 2022-05-11 Micro-resistance check valve Pending CN115059786A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210515231.0A CN115059786A (en) 2022-05-11 2022-05-11 Micro-resistance check valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210515231.0A CN115059786A (en) 2022-05-11 2022-05-11 Micro-resistance check valve

Publications (1)

Publication Number Publication Date
CN115059786A true CN115059786A (en) 2022-09-16

Family

ID=83198516

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210515231.0A Pending CN115059786A (en) 2022-05-11 2022-05-11 Micro-resistance check valve

Country Status (1)

Country Link
CN (1) CN115059786A (en)

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