CN111963762A - Valve for preventing water hammer effect - Google Patents
Valve for preventing water hammer effect Download PDFInfo
- Publication number
- CN111963762A CN111963762A CN202010816766.2A CN202010816766A CN111963762A CN 111963762 A CN111963762 A CN 111963762A CN 202010816766 A CN202010816766 A CN 202010816766A CN 111963762 A CN111963762 A CN 111963762A
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- valve
- valve body
- main shaft
- gear
- supporting
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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
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
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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
- 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
Abstract
The invention relates to a valve for preventing a water hammer effect, which comprises a valve body, a valve core, a trip rod and a buffer mechanism. The valve body extends along the horizontal direction, the valve core is arranged in the channel, the pulling rod is arranged on the valve core and penetrates through the valve body so as to drive the valve core to rotate in the valve body when the valve core rotates under stress, and then the valve body is opened or closed. The buffer mechanism comprises a main shaft, a limited slip bulge, a plurality of water baffles, a limited sliding groove and a water baffle return device. A plurality of gear rolling grooves are formed in the side wall of the main shaft, a rack is fixedly mounted on one side wall of each gear rolling groove, and the slip limiting protrusions are arranged on the surfaces of the meshing teeth of the racks. A plurality of breakwaters are perpendicular to the main shaft and evenly distributed along the circumference of main shaft, and the gear is installed to the inboard friction of breakwater, and the gear meshes with the rack, and the limit slide groove sets up in the surface of gear, and the limit is slided in the arch inserts the limit slide groove to hinder the gear for the rack along the width direction removal of rack. The reliability of the valve for preventing the water hammer effect is improved, and the structure is compact.
Description
Technical Field
The invention relates to the field of waterproof hammers, in particular to a valve for preventing a waterproof hammer effect.
Background
The water hammer is called a water hammer because the water hammer generates water flow shock waves like a hammer is knocked when a power failure suddenly occurs or when a valve is closed too fast due to the inertia of pressure water flow. The force generated by the water flow shock wave back and forth is sometimes very large, thus damaging the valve and the water pump.
When the electric water pump is started at full voltage, the speed can be accelerated to the rated speed from a static state in less than 1s, and the flow in the pipeline is increased from zero to the rated flow. Because of the momentum and degree of compressibility of the fluid, a sharp change in flow will cause either too high or too low a pressure impact within the pipe and the appearance of "cavitation". The impact of the pressure will force the pipe wall to make noise as if a hammer were hitting the pipe, known as the "water hammer effect". The water hammer effect is extremely destructive: too high a pressure will cause the pipe to collapse, whereas too low a pressure will cause the pipe to collapse and damage the valves and fixtures.
In order to eliminate the serious consequences of the water hammer effect, a series of buffering measures and devices are required in the pipeline.
Disclosure of Invention
The invention provides a valve for preventing a water hammer effect, which aims to solve the problem that the existing pipeline is easy to break under the water hammer effect.
The valve for preventing the water hammer effect adopts the following technical scheme: a valve for preventing the water hammer effect comprises a valve body, a valve core, a trip rod and a buffer mechanism; the valve body extends along the horizontal direction, and a channel is formed inside the valve body; the valve core is arranged in the channel; the trip rod is arranged on the valve core and penetrates through the valve body so as to drive the valve core to rotate in the valve body when the trip rod is stressed to rotate, and further the valve body is opened or closed; the buffer mechanism comprises a main shaft, a limited slip bulge, a plurality of water baffles, a limited sliding groove and a water baffle return device; the main shaft extends along the horizontal direction, is coaxial with the valve body and is fixedly arranged in the valve body; a plurality of gear rolling grooves are formed in the side wall of the main shaft, a rack is fixedly mounted on one side wall of each gear rolling groove, and the slip limiting protrusion is arranged on the surface, provided with the meshing teeth, of the rack; the water baffles are perpendicular to the main shaft and are evenly distributed along the circumferential direction of the main shaft, gears are arranged on the inner sides of the water baffles in a friction mode, the gears are meshed with the racks, the sliding limiting grooves are formed in the outer surfaces of the gears, the sliding limiting protrusions are inserted into the sliding limiting grooves to be matched with each other to prevent the gears from moving along the width direction of the racks relative to the racks, and the water baffle returning device is configured to push the water baffles to move towards the left side when the valve core is closed.
Furthermore, the limiting sliding groove is a spiral groove surrounding the circumference of the gear, the spiral groove is a right-handed spiral groove, the limiting sliding groove comprises a head end and a tail end, and the head end of the limiting sliding groove is positioned on the outer side of the tail end along the radial direction of the valve body; the protruding contained angle that forms of extending direction with the rack of limit slip, the lead angle of limit spout with the contained angle equals, and limit slip is protruding to be a plurality of, sets gradually along the extending direction of rack, and limit slip is protruding to include left end and right-hand member, and the protruding left end of limit slip on the radial direction right side of valve body is located the outside of the protruding right-hand member of left limit slip to make the gear at a limit slip protruding to roll on another limit slip protruding adjacent, the head end and the tail end of limit slip all with two adjacent limit slip protruding cooperations.
Furthermore, the limited slip bulge and the tooth groove bottom of the meshing teeth of the rack are arranged at intervals to form a flushing hole; the bottom surface of the limited sliding groove and the tooth bottom of the meshing tooth of the gear are positioned on the same circumferential surface.
Furthermore, the water baffle plate return device comprises a supporting part, a top pressure plate, a transmission mechanism and a top pressure plate return device; the supporting part is arranged in the valve body and fixedly connected to the right end of the main shaft; the top pressure plate is slidably arranged on the outer side of the main shaft and is positioned on the right side of the waterproof plate; the transmission mechanism is connected with the valve core and the top pressure plate, so that the top pressure plate is driven to move rightwards by the transmission mechanism when the valve core opens the valve body; the top pressure plate return device is arranged between the top pressure plate and the supporting part to enable the top pressure plate to move leftwards when the valve body is closed by the valve core, and further enable the top pressure plate to push the water baffles to move leftwards when the top pressure plate moves leftwards.
Further, the transmission mechanism comprises a traction rod and a flexible traction rope; the plurality of traction rods extend along the horizontal direction, the left ends of the traction rods are fixedly connected with the right ends of the top pressure plates, and the right ends are provided with rotating connecting rings; the left end of the flexible traction rope is connected with the rotary connecting ring, and the right end of the flexible traction rope is connected with the valve core; the top pressure plate return device is a spiral compression spring.
Further, the supporting part comprises a rotating groove, a rotating supporting slide block and a supporting arm; the rotation groove is arranged along the circumferential direction of the inner side wall of the valve body, the rotary supporting sliding block is slidably arranged in the rotation groove along the circumferential direction of the valve body, the supporting arm is arranged along the axis direction perpendicular to the valve body, the two ends of the supporting arm are fixedly connected to the rotary supporting sliding block, and the middle of the supporting arm is fixedly connected to the right end of the main shaft.
Furthermore, a plurality of supporting slideways extending along the axis direction of the main shaft are arranged in the main shaft, and the supporting slideways penetrate through the left end and the right end of the main shaft; the buffer mechanism further comprises a guide supporting elastic sheet, the guide supporting elastic sheet is arranged in the supporting slide way, the right end of the guide supporting elastic sheet is in contact with the bottom surface of the supporting slide way, the left end of the guide supporting elastic sheet is rotatably arranged at the inner end of the rotating shaft, and the left end of the guide supporting elastic sheet is positioned outside the right end along the radial direction of the valve body.
Furthermore, the supporting slide ways comprise water inlet pressurizing holes and slide way parts which are gradually contracted from left to right, the water inlet pressurizing holes are formed in the left sides of the slide way parts, and each supporting slide way is positioned on the inner side of the gear rolling groove;
further, the length of at least one gear rolling groove is different from that of each of the rest gear rolling grooves, and the length of the rack is equal to that of the gear rolling groove.
Furthermore, a friction sleeve is arranged between the gear and the rotating shaft, the inner side of the friction sleeve is in friction contact with the outer side of the rotating shaft, and the outer side of the friction sleeve is in friction contact with the inner side of the gear.
The invention has the beneficial effects that: according to the valve for preventing the water hammer effect, the rack is provided with the limited slip bulge, the gear is provided with the limited sliding groove, and the limited slip bulge is inserted into the limited sliding groove to be matched with each other, so that the gear is prevented from moving along the width direction of the rack relative to the rack, the reliability of the valve for preventing the water hammer effect is improved, and the valve is compact in structure.
The scouring holes are arranged to prevent dirt from accumulating near the intersection of the limited slip bulge and the meshing teeth on the rack, so that the meshing of the gear and the rack is influenced; meanwhile, water flow is used for washing the two sides of the slip limiting bulge so as to keep the intersection of the slip limiting bulge and the meshing teeth on the rack clean and tidy.
The valve for preventing the water hammer effect performs three-level buffering and pressure relief on the inertia water flow based on the water hammer phenomenon, and improves the buffering effect.
The guide support elastic sheet is used for providing a support torque for the water baffle, the torque applied by the water hammer action by the water baffle is prevented from directly enabling the rack to bear, the abrasion of the rack is reduced, the service life of the rack is prolonged, and meanwhile, the meshing of the gear on the rack is more smooth.
The inner end of the guide supporting elastic sheet is separated from the bottom surface of the supporting slide under the lifting action of high-pressure water flow, so that the lower end of the guide supporting elastic sheet is prevented from being abraded due to friction with the bottom surface of the supporting slide, the resistance of the lower end of the guide supporting elastic sheet moving to the right side is reduced, the torque born by the rack is reduced, and the rotating shaft is prevented from being blocked.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of a valve for preventing a hammer effect according to the present invention;
FIG. 2 is a schematic structural view of an embodiment of a valve for preventing a hammer effect according to the present invention;
FIG. 3 is a cross-sectional view of an embodiment of a valve of the present invention that resists the hammer effect;
FIG. 4 is a schematic diagram of a damper mechanism for a valve that resists the hammer effect according to the present invention;
FIG. 5 is a cross-sectional view of a damper mechanism of a valve for resisting the hammer effect in accordance with the present invention;
FIG. 6 is an enlarged view of a portion of I in FIG. 5;
FIG. 7 is a schematic view of the construction of the gear and rack of a valve of the present invention to prevent the hammering effect;
FIG. 8 is a side view of the gear and rack of a valve of the present invention to combat the effects of hammering;
FIG. 9 is a partial enlarged view of FIG. 8
In the figure: 1. a valve body; 2. a valve core; 3. pulling a rod; 4. a buffer mechanism; 41. a main shaft; 42. a water baffle; 43. a top pressing plate; 44. a helical compression spring; 45. a support arm; 46. a traction rod; 47. a water inlet pressurizing hole; 48. a rack; 49. a limited slip bulge; 50. a support slide; 51. a rotating shaft; 52. a friction sleeve; 53. a gear; 54. the guiding and supporting elastic sheet; 55. a rotary support slider; 56. rotating the connecting ring; 57. a rotating groove; 58. a limit chute; 59. a gear rolling groove; 60. flushing the hole; 5. a flexible pulling rope.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 9, an embodiment of a valve for preventing a hydraulic hammer effect according to the present invention includes a valve body 1, a valve core 2, a trip rod 3, and a buffer mechanism 4. The valve body 1 extends along the horizontal direction and is cylindrical, a channel is formed in the valve body 1, the valve core 2 is installed in the channel, and the outer side of the valve core 2 is attached to the inner side wall of the valve body 1. The turning rod 3 is installed on the valve core 2 and penetrates through the valve body 1, and the valve core 2 can rotate in the valve body 1 by rotating the turning rod 3, so that the valve body 1 is opened or closed. The buffer mechanism 4 is arranged in the channel of the valve body 1, and the buffer mechanism 4 comprises a main shaft 41, a limited slip bulge 49, a plurality of water baffles 42, a limited slip groove 58 and a water baffle return device. The main shaft 41 extends along the horizontal direction and is coaxial with the valve body 1, a plurality of gear rolling grooves 59 are formed in the side wall of the main shaft 41, and a rack 48 is fixedly mounted on one side wall of each gear rolling groove 59. A slip limiting projection 49 is provided on the surface of the rack 48 having the meshing teeth. The water baffles 42 are perpendicular to the main shaft 41 and are uniformly distributed along the circumferential direction of the main shaft 41, the gears 53 are arranged on the inner sides of the water baffles 42 in a friction mode, the gears 53 are meshed with the racks 48, the slide limiting grooves 58 are formed in the outer surfaces of the gears 53, and the slide limiting protrusions 49 are inserted into the slide limiting grooves 58 to be matched with each other, so that the gears 53 are prevented from moving relative to the racks 48 along the width direction of the racks 48. The water deflector 42 return means is configured to urge the water deflector 42 to move to the left when the valve cartridge 2 is closed.
In this embodiment, the sliding-limiting groove 58 is a spiral groove around the circumference of the gear 53, the spiral groove is a right-handed spiral groove, the sliding-limiting groove 58 includes a head end and a tail end, and the head end of the sliding-limiting groove 58 is located outside the tail end along the radial direction of the valve body 1. The slide-limiting protrusion 49 and the extending direction of the rack 48 form an included angle, that is, the slide-limiting protrusion 49 is obliquely arranged relative to the axial direction of the valve body 1, the lift angle of the slide-limiting groove 58 is equal to the included angle, the slide-limiting protrusions 49 are multiple and are sequentially arranged along the extending direction of the rack 48, the slide-limiting protrusion 49 comprises a left end and a right end, the left end of the slide-limiting protrusion 49 on the right side in the radial direction of the valve body 1 is positioned outside the right end of the slide-limiting protrusion 49 on the left side, so that when one slide-limiting protrusion 49 rolls onto the other adjacent slide-limiting protrusion 49, the head end and the tail end of the slide-limiting groove 58 are both matched with the two adjacent slide-limiting protrusions 49, and therefore the gear 53 is prevented from moving relative to the rack 48 in the width direction of the rack 48 when rolling.
In the present embodiment, the slide-limiting protrusion 49 is spaced from the bottom of the tooth groove of the engaging tooth of the rack 48 to form a flushing hole 60, so as to prevent dirt from accumulating near the intersection of the slide-limiting protrusion 49 and the engaging tooth on the rack 48 and affecting the engagement between the gear 53 and the rack 48. The bottom surface of the sliding limiting groove 58 and the bottom surface of the tooth bottom of the meshing tooth of the gear 53 are positioned on the same circumferential surface, so that the gear 53 and the rack 48 are matched more tightly.
In this embodiment, the water guard returning device includes a supporting portion, a pressing plate 43, a transmission mechanism and a pressing plate 43 returning device; the supporting part is arranged in the valve body 1 and fixedly connected to the right end of the main shaft 41, and the top pressure plate 43 is slidably arranged on the outer side of the main shaft 41 and positioned on the right side of the water baffle 42; the transmission mechanism is connected with the valve core 2 and the top pressure plate 43, so that the top pressure plate 43 is driven by the transmission mechanism to move rightwards when the valve body is opened by the valve core 2. The top pressure plate 43 return device is arranged between the top pressure plate 43 and the supporting portion to urge the top pressure plate 43 to move leftward when the valve body is closed by the valve core 2, so that the top pressure plate 43 pushes the water baffles 42 to move leftward when moving leftward, thereby stopping the water hammer flow.
In this embodiment the transmission mechanism comprises a traction rod 46 and a flexible traction rope 5. The plurality of pulling rods 46 extend along the horizontal direction, the left end of each pulling rod 46 is fixedly connected with the right end of the jacking plate 43, the right end of each pulling rod is provided with a rotating connecting ring 56, and the rotating connecting rings 56 can rotate at the right end of each pulling rod 46. The left end of the flexible traction rope 5 is connected with the rotary connecting ring 56, and the right end is connected with the valve core 2. The top plate return means is a helical compression spring 44.
In the present embodiment, the support portion includes a rotation slot 57, a rotation support slider 55, and a support arm 45. The rotation groove 57 is arranged along the circumferential direction of the inner side wall of the valve body 1, the rotary support slider 55 is slidably mounted in the rotation groove 57 along the circumferential direction of the valve body 1, the support arm 45 is arranged along the axial direction perpendicular to the valve body 1, the two ends of the support arm 45 are fixedly connected to the rotary support slider 55, and the middle of the support arm 45 is fixedly connected to the right end of the main shaft 41. When the water baffles 42 are impacted by water flow, the water baffles 42 move to the right side against the pushing force of the helical compression springs 44 and deflect under the rotating friction action of the gears 53, the deflected water baffles 42 provide torque for rotating the whole buffer mechanism 4 under the impact of the water flow so as to consume the kinetic energy of the water flow to the rotation of the buffer mechanism 4, and at the moment, the rotating support sliding block 55 rotates in the rotating groove 57 matched with the rotating support sliding block, so that the buffer stroke required by the water baffles 42 is reduced.
In the present embodiment, a plurality of supporting slideways 50 extending along the axial direction of the main shaft 41 are provided in the main shaft 41, and the supporting slideways 50 penetrate through the left and right ends of the main shaft 41. The buffering mechanism 4 further comprises a guiding and supporting elastic sheet 54, the guiding and supporting elastic sheet 54 is arranged in the supporting slide way 50, the right end of the guiding and supporting elastic sheet 54 is in contact with the bottom surface of the supporting slide way 50, the left end of the guiding and supporting elastic sheet 54 is rotatably arranged at the inner end of the rotating shaft 51, and the left end of the guiding and supporting elastic sheet 54 is located on the outer side of the right end along the radial direction of the valve body 1, so that the torque borne by the rack 48 is reduced, and the rotating shaft.
In this embodiment, the supporting skids 50 include the water inlet pressurizing holes 47 and the skid portions which gradually shrink from left to right, the water inlet pressurizing holes 47 are provided on the left side of the skid portions, and each supporting skid 50 is located on the inner side of the gear rolling groove 59. Because the water inlet pressurizing hole 47 is opened towards the left side and gradually reduced, high-pressure water flow of the water hammer is further pressurized, the pressurized water flow is forced to be discharged towards the right side from the space between the guide supporting elastic sheet 54 and the bottom surface of the supporting slide way 50, at the moment, the inner end of the guide supporting elastic sheet 54 is separated from the bottom surface of the supporting slide way 50 under the supporting action of the high-pressure water flow, abrasion caused by friction between the inner end of the guide supporting elastic sheet 54 and the bottom surface of the supporting slide way 50 is avoided, and the resistance for guiding the inner end of the support elastic sheet.
In the present embodiment, at least one gear rolling groove 59 has a different length from each of the remaining gear rolling grooves 59, and the rack 48 has a length equal to that of the gear rolling groove 59. When the water inlet effect of the water inlet pressurizing hole 47 with larger water flow speed is not ideal, the final staying positions of the water baffles 42 under the guidance of the rack 48 are different, so that the adjacent water baffles 42 are staggered to form a channel for releasing the residual kinetic energy of the water hammer.
In the present embodiment, a friction sleeve 52 is provided between the gear 53 and the rotating shaft 51, the inner side of the friction sleeve 52 is in frictional contact with the outer side of the rotating shaft 51, and the outer side of the friction sleeve 52 is in frictional contact with the inner side of the gear 53. So that the gear 53 drives the friction sleeve 52 to rotate under the action of friction, and the friction sleeve 52 drives the water deflector 42 to deflect under the action of friction.
When the water hammer type water hammer is used, the valve is opened, the valve core 2 rotates forwards by 90 degrees, the flexible traction rope 5 is tensioned, and when water hammer water flow impacts a baffle plate formed by 4 water baffles 42, the 4 water baffles 42 move towards the right side and deflect and move rightwards under the rotating friction action of the gear 53, so that the adjacent water baffles 42 are staggered to form a channel for water flow to pass through.
When the valve is closed, the valve core 2 rotates in the reverse direction by 90 degrees, the flexible traction rope 5 is loosened, and at the moment, the water baffle plate 42 moves to the left side under the pushing action of the top pressure plate 43 and finally is positioned on the same plane to play a role in stopping water hammer flow. When the water hammer water flow impacts the baffle composed of the water baffles 42, the water baffles 42 overcome the pushing force of the spiral compression spring 44 to move towards the right side and deflect under the rotating friction action of the gear 53, the pushing plate 43 moves a certain distance leftwards under the elastic force of the spiral compression spring 44, so that the deflection angle of the water baffles 42 is opened to the maximum and maintained along with the rotation of the gear 53, the deflected water baffles 42 provide the torque for rotating the whole buffer mechanism 4 like fan blades under the impact of the water flow, so that the kinetic energy of the water flow is consumed for the rotation of the buffer mechanism 4, at the moment, the rotating support sliding block 55 rotates in the rotating groove 57 matched with the rotating support sliding block, and the buffer stroke required by the water baffles 42 is reduced. When the water hammer is large enough, the water flow can push the gear 53 to move to the rightmost rack 48, and the length of each rack 48 is different from that of the adjacent rack 48, so that the stroke of each water baffle 42 moving towards the right side is different, and the adjacent water baffles 42 are staggered to form a channel for releasing the residual kinetic energy of the water hammer.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A valve for preventing water hammer effect is characterized in that: comprises a valve body, a valve core, a trip rod and a buffer mechanism; the valve body extends along the horizontal direction, and a channel is formed inside the valve body; the valve core is arranged in the channel; the trip rod is arranged on the valve core and penetrates through the valve body so as to drive the valve core to rotate in the valve body when the trip rod is stressed to rotate, and further the valve body is opened or closed; the buffer mechanism comprises a main shaft, a limited slip bulge, a plurality of water baffles, a limited sliding groove and a water baffle return device; the main shaft extends along the horizontal direction, is coaxial with the valve body and is fixedly arranged in the valve body; a plurality of gear rolling grooves are formed in the side wall of the main shaft, a rack is fixedly mounted on one side wall of each gear rolling groove, and the slip limiting protrusion is arranged on the surface, provided with the meshing teeth, of the rack; the water baffles are perpendicular to the main shaft and are evenly distributed along the circumferential direction of the main shaft, gears are arranged on the inner sides of the water baffles in a friction mode, the gears are meshed with the racks, the sliding limiting grooves are formed in the outer surfaces of the gears, the sliding limiting protrusions are inserted into the sliding limiting grooves to be matched with each other to prevent the gears from moving along the width direction of the racks relative to the racks, and the water baffle returning device is configured to push the water baffles to move towards the left side when the valve core is closed.
2. The valve of claim 1, wherein: the limiting sliding groove is a spiral groove surrounding the circumference of the gear, the spiral groove is a right-handed spiral groove, the limiting sliding groove comprises a head end and a tail end, and the head end of the limiting sliding groove is positioned on the outer side of the tail end along the radial direction of the valve body; the protruding contained angle that forms of extending direction with the rack of limit slip, the lead angle of limit spout with the contained angle equals, and limit slip is protruding to be a plurality of, sets gradually along the extending direction of rack, and limit slip is protruding to include left end and right-hand member, and the protruding left end of limit slip on the radial direction right side of valve body is located the outside of the protruding right-hand member of left limit slip to make the gear at a limit slip protruding to roll on another limit slip protruding adjacent, the head end and the tail end of limit slip all with two adjacent limit slip protruding cooperations.
3. The valve of claim 2, wherein: the limited slip bulge and the tooth bottom of the meshing tooth of the rack are arranged at intervals to form a flushing hole; the bottom surface of the limited sliding groove and the tooth bottom of the meshing tooth of the gear are positioned on the same circumferential surface.
4. The valve of claim 1, wherein: the water baffle return device comprises a supporting part, a top pressure plate, a transmission mechanism and a top pressure plate return device; the supporting part is arranged in the valve body and fixedly connected to the right end of the main shaft; the top pressure plate is slidably arranged on the outer side of the main shaft and is positioned on the right side of the waterproof plate; the transmission mechanism is connected with the valve core and the top pressure plate, so that the top pressure plate is driven to move rightwards by the transmission mechanism when the valve core opens the valve body; the top pressure plate return device is arranged between the top pressure plate and the supporting part to enable the top pressure plate to move leftwards when the valve body is closed by the valve core, and further enable the top pressure plate to push the water baffles to move leftwards when the top pressure plate moves leftwards.
5. The valve of claim 4, wherein: the transmission mechanism comprises a traction rod and a flexible traction rope; the plurality of traction rods extend along the horizontal direction, the left ends of the traction rods are fixedly connected with the right ends of the top pressure plates, and the right ends are provided with rotating connecting rings; the left end of the flexible traction rope is connected with the rotary connecting ring, and the right end of the flexible traction rope is connected with the valve core; the top pressure plate return device is a spiral compression spring.
6. The valve of claim 4, wherein: the supporting part comprises a rotating groove, a rotating supporting slide block and a supporting arm; the rotation groove is arranged along the circumferential direction of the inner side wall of the valve body, the rotary supporting sliding block is slidably arranged in the rotation groove along the circumferential direction of the valve body, the supporting arm is arranged along the axis direction perpendicular to the valve body, the two ends of the supporting arm are fixedly connected to the rotary supporting sliding block, and the middle of the supporting arm is fixedly connected to the right end of the main shaft.
7. The valve of claim 1, wherein: a plurality of supporting slideways extending along the axis direction of the main shaft are arranged in the main shaft, and the supporting slideways penetrate through the left end and the right end of the main shaft; the buffer mechanism further comprises a guide supporting elastic sheet, the guide supporting elastic sheet is arranged in the supporting slide way, the right end of the guide supporting elastic sheet is in contact with the bottom surface of the supporting slide way, the left end of the guide supporting elastic sheet is rotatably arranged at the inner end of the rotating shaft, and the left end of the guide supporting elastic sheet is positioned outside the right end along the radial direction of the valve body.
8. The valve of claim 5, wherein: the supporting slide comprises a water inlet pressurizing hole and a slide portion, wherein the water inlet pressurizing hole and the slide portion gradually shrink from left to right, the water inlet pressurizing hole is formed in the left side of the slide portion, and each supporting slide is located on the inner side of each gear rolling groove.
9. The valve of claim 1, wherein: the length of at least one gear rolling groove is different from that of each of the rest gear rolling grooves, and the length of the rack is equal to that of the gear rolling groove.
10. The valve of claim 4, wherein: a friction sleeve is arranged between the gear and the rotating shaft, the inner side of the friction sleeve is in friction contact with the outer side of the rotating shaft, and the outer side of the friction sleeve is in friction contact with the inner side of the gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010816766.2A CN111963762A (en) | 2020-08-14 | 2020-08-14 | Valve for preventing water hammer effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010816766.2A CN111963762A (en) | 2020-08-14 | 2020-08-14 | Valve for preventing water hammer effect |
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| CN111963762A true CN111963762A (en) | 2020-11-20 |
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| CN202010816766.2A Withdrawn CN111963762A (en) | 2020-08-14 | 2020-08-14 | Valve for preventing water hammer effect |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762226A (en) * | 2021-01-05 | 2021-05-07 | 江苏开能华宇环保设备有限公司 | Integrated water tank capable of preventing water hammer effect |
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| NL123857C (en) * | 1962-05-16 | 1967-10-16 | ||
| KR20020034263A (en) * | 2000-10-31 | 2002-05-09 | 이영범 | Control check valve |
| CN203115120U (en) * | 2013-02-01 | 2013-08-07 | 中国航空工业集团公司西安飞机设计研究所 | Low-flow-resistance pipeline valve device structure |
| CN106439204A (en) * | 2016-10-12 | 2017-02-22 | 中国核动力研究设计院 | Passive two-phase water hammer relieving device |
| CN208907485U (en) * | 2018-10-15 | 2019-05-28 | 玉环县珠港铜业有限公司 | A kind of ball valve with automatic Regulation function |
| CN210106739U (en) * | 2019-04-15 | 2020-02-21 | 郑州市万安人防工程防护设备有限公司 | Explosion-proof ripples gate valve |
| CN111365496A (en) * | 2020-03-31 | 2020-07-03 | 天虹阀门科技（泉州）有限公司 | Gate valve with non-return function |
-
2020
- 2020-08-14 CN CN202010816766.2A patent/CN111963762A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
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| NL123857C (en) * | 1962-05-16 | 1967-10-16 | ||
| KR20020034263A (en) * | 2000-10-31 | 2002-05-09 | 이영범 | Control check valve |
| CN203115120U (en) * | 2013-02-01 | 2013-08-07 | 中国航空工业集团公司西安飞机设计研究所 | Low-flow-resistance pipeline valve device structure |
| CN106439204A (en) * | 2016-10-12 | 2017-02-22 | 中国核动力研究设计院 | Passive two-phase water hammer relieving device |
| CN208907485U (en) * | 2018-10-15 | 2019-05-28 | 玉环县珠港铜业有限公司 | A kind of ball valve with automatic Regulation function |
| CN210106739U (en) * | 2019-04-15 | 2020-02-21 | 郑州市万安人防工程防护设备有限公司 | Explosion-proof ripples gate valve |
| CN111365496A (en) * | 2020-03-31 | 2020-07-03 | 天虹阀门科技（泉州）有限公司 | Gate valve with non-return function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112762226A (en) * | 2021-01-05 | 2021-05-07 | 江苏开能华宇环保设备有限公司 | Integrated water tank capable of preventing water hammer effect |
| CN112762226B (en) * | 2021-01-05 | 2022-08-30 | 江苏开能华宇环保设备有限公司 | Integrated water tank capable of preventing water hammer effect |
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