CN116771948B - Eccentric rotary valve with anti-blocking function - Google Patents
Eccentric rotary valve with anti-blocking function Download PDFInfo
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- CN116771948B CN116771948B CN202311061474.2A CN202311061474A CN116771948B CN 116771948 B CN116771948 B CN 116771948B CN 202311061474 A CN202311061474 A CN 202311061474A CN 116771948 B CN116771948 B CN 116771948B
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- flow channel
- filter frame
- eccentric
- eccentric spherical
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- 238000007789 sealing Methods 0.000 claims abstract description 60
- 239000002245 particle Substances 0.000 claims abstract description 45
- 230000005540 biological transmission Effects 0.000 claims abstract description 28
- 238000012216 screening Methods 0.000 claims abstract description 4
- 238000004140 cleaning Methods 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- 239000011229 interlayer Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 230000000903 blocking effect Effects 0.000 abstract description 6
- 238000005452 bending Methods 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of valves, and particularly relates to an eccentric rotary valve with an anti-blocking function, which comprises an eccentric spherical crown, a sealing sleeve, an inner baffle, a filter frame and a transmission assembly; the inner baffle is provided with a first constant flow channel for medium circulation, one side of the inner baffle bearing the medium is rotatably provided with a filter frame for screening particles in the medium passing through the first constant flow channel, the filter frame is provided with a flow channel which corresponds to and is staggered with the first constant flow channel, a transmission assembly is arranged between the filter frame and the inner baffle, and the eccentric spherical crown drives the flow channel on the filter frame to be staggered with the first constant flow channel on the inner baffle through the transmission assembly in a closed state. In the process of blocking the sealing sleeve by the eccentric spherical crown, the filter frame is automatically and synchronously screwed out, particles in the medium can be screened out by the filter frame, so that the particles are prevented from continuing to circulate into the valve seat before the eccentric spherical crown blocks the sealing sleeve, the anti-blocking function is achieved, and the synchronism is high, and the filter frame does not need to be manually screwed out.
Description
Technical Field
The invention belongs to the technical field of valves, and particularly relates to an eccentric rotary valve with an anti-jamming function.
Background
The eccentric rotary valve is a device which uses the valve shaft to drive the eccentric spherical crown to rotate, so that the eccentric spherical crown can block or deviate from the valve seat, and the device is suitable for conveying various mediums. However, some of the medium will have particles or impurities, and in the process of blocking the valve seat by the eccentric spherical cap, the flow passage is reduced, so that if particles or impurities pass, the particles or impurities may be blocked, the use is affected, and the valve is easy to damage, so that the valve needs to be prevented.
For example, patent publication No. CN115076400a, publication No. 2022-09-20 discloses an anti-seizing eccentric rotary valve, which gradually approaches the outer wall of the sealing block by making the bending belt body contact the outer wall of the sealing block, the movable member and the bending belt body are semi-circular, the shape of the bending belt body is matched with that of the sealing block, and the sealing block is sealed in advance before the sealing block is closed with the valve seat, so as to reduce the risk of blocking the joint of the sealing block and the valve seat by particles or impurities in the medium.
However, in the above-mentioned eccentric rotary valve, before the eccentric spherical crown blocks the valve seat in the actual medium conveying process, the medium still circulates in the gap between the eccentric spherical crown and the valve seat, and the medium can continuously drive the flow of particles or impurities in the circulating process, and the particles or impurities in the medium can not be prevented by only contacting the bending belt body with the sealing block, and even the medium is easy to be blocked between the bending belt body and the sealing block when the eccentric rotary valve is closed.
Disclosure of Invention
The invention aims to overcome the defect that the prior art cannot prevent particles or impurities in a medium only by contacting the bending belt body with the sealing block, and the bending belt body and the sealing block are easy to clamp even when the eccentric rotary valve is closed.
In order to solve the technical problems, the invention provides an eccentric rotary valve with an anti-seizing function, which comprises a valve seat, a valve shaft, a valve core, an eccentric spherical crown, a sealing sleeve, an inner baffle, a filter frame and a transmission component, wherein the upper part of the valve seat is rotationally provided with the valve shaft, the valve shaft penetrates through the valve seat, the lower end of the valve shaft is connected with the valve core, the outer side of the valve core is connected with the eccentric spherical crown positioned in the valve seat, the sealing sleeve is arranged at a medium flow passage of the valve seat, the eccentric spherical crown has a closing state for blocking the sealing sleeve and an opening state deviating from the sealing sleeve along with the rotation of the valve shaft, a rubber sealing ring is connected to the position of the sealing sleeve, the position of the eccentric spherical crown, which is contacted with the sealing sleeve, is provided with a round angle in a chamfering way, and the round angle of the eccentric spherical crown can be jointed with the rubber sealing ring; one side of the sealing sleeve is connected with an inner baffle which is conical in shape, a circle of first flow channel for medium circulation is formed in the inner baffle, one side of the inner baffle bearing the medium is rotatably provided with a filter frame for screening particles in the medium passing through the first flow channel, the filter frame is provided with a movable flow channel which corresponds to and is staggered with the first flow channel, a transmission assembly is arranged between the filter frame and the inner baffle, and the eccentric spherical crown drives the movable flow channel on the filter frame to be staggered with the first flow channel on the inner baffle through the transmission assembly when in a closed state.
Preferably, the transmission assembly comprises a screw rod, a guide rod, a collision piece, an elastic piece and a nut, wherein the screw rod is connected to the center of the filter frame, the guide rod which is in a T shape is connected to one side of the inner baffle, which is close to the eccentric spherical crown, the collision piece is arranged on the guide rod in a sliding manner, two elastic pieces which are opposite front and back are connected between the collision piece and the inner baffle, the elastic piece is a spring piece, and the collision piece is provided with a nut which is in threaded connection with the screw rod and is used for extruding the screw rod to rotate.
Preferably, the abutting piece comprises a push-pull rod which is arranged on the guide rod in a sliding manner and is connected with the nut and the elastic piece, and a pressure receiving piece which is arranged at the end part of the push-pull rod and is used for receiving the extrusion force of the eccentric spherical crown, the position of the pressure receiving piece is suitable for being adjusted at the end part of the push-pull rod, and the position of the pressure receiving piece is adjusted according to the size of particles in a medium so as to change the staggered time of the moving flow channel and the constant flow channel.
Preferably, the sealing sleeve is provided with a spiral guide rail in a plane spiral arrangement in a rotating mode, the inner end of the spiral guide rail is provided with a guide rail slide block connected with the pressed piece in a sliding mode, the position of the pressed piece at the end portion of the push-pull rod is adjusted by the guide rail slide block through the spiral guide rail, and a fine adjustment assembly used for rotating the spiral guide rail is arranged between the valve seat and the spiral guide rail.
Preferably, the compression piece is including contradicting slider, conflict down-rod, rack one, rack two, straight-tooth wheel one and straight-tooth wheel two, and the conflict slider slides and establishes on the push-and-pull rod, it is equipped with the perpendicular to contradict the slider to contradict down-rod on the slider, contradict down-rod and be used for receiving the extrusion force from eccentric spherical crown, be connected with two relative rack one from top to bottom on the conflict down-rod, the tip right side of push-and-pull rod is connected with rack two, the last rotation of conflict down-rod be equipped with rack two engaged straight-tooth wheel one, upper and lower both ends of straight-tooth wheel one all be connected with rack one engaged straight-tooth wheel two, upper and lower two straight-tooth wheel two mesh with two upper and lower rack one respectively, the conflict down-rod is suitable for contradict the slider slides to when the push-and-pull rod tip is close to the direction of eccentric spherical crown stretches out.
Preferably, the fine adjustment assembly comprises a transmission toothed ring and a driving gear, the outer side of the spiral guide rail is connected with the transmission toothed ring, teeth of the transmission toothed ring are located on the outer side, a groove for the rotation of the transmission toothed ring is formed in the inner side of the sealing sleeve, the driving gear embedded into the valve seat is rotationally arranged on the valve seat, and the driving gear is meshed with the transmission toothed ring.
Preferably, the filter further comprises an outer baffle, one side of the inner baffle bearing the medium is connected with an outer baffle, an interlayer for accommodating the filter frame is formed between the outer baffle and the inner baffle, and a constant flow channel II corresponding to the constant flow channel I is arranged on the outer baffle.
Preferably, the filter comprises a first fixed flow passage and a second fixed flow passage, and the outer baffle is provided with a convex thorn, wherein a circle of convex thorn surrounding the first fixed flow passage is connected to the position of the second fixed flow passage, and the convex thorn is used for cleaning particles screened by the filter frame.
Preferably, the center of the valve shaft is deviated to one side, close to the abutting piece, of the center of the valve seat, and before the eccentric spherical crown presses the abutting piece, a space for particles to circulate in a gap between the eccentric spherical crown and the sealing sleeve is reserved, so that the eccentric spherical crown is prevented from being blocked by the particles before the eccentric spherical crown blocks the sealing sleeve.
Preferably, when the eccentric spherical crown deviates from the opening state of the sealing sleeve, a medium circulation route is reserved between the cambered surface of the eccentric spherical crown and the valve seat, and part of medium flowing into the valve seat circulates on the cambered surface of the eccentric spherical crown along the medium circulation route and cleans particles on the surface of the eccentric spherical crown.
On the basis of overcoming the defects of the prior art, the invention has the following beneficial effects:
1. in the process of blocking the sealing sleeve by the eccentric spherical crown, the filter frame is automatically and synchronously screwed out, particles in the medium can be screened out by the filter frame, so that the particles are prevented from continuing to circulate into the valve seat before the eccentric spherical crown blocks the sealing sleeve, the anti-blocking function is achieved, and the synchronism is high, and the filter frame does not need to be manually screwed out.
2. For large-particle media, the position of the pressure receiving piece is adjusted, so that the filter frame rotates in advance, the phenomenon that large particles in the media are clamped is avoided, for small-particle media, the filter frame does not need to rotate in advance, the filter frame is prevented from causing overlarge influence on water flow, and the control precision of the water flow is guaranteed.
3. When the eccentric spherical crown deviates from the opening state of the sealing sleeve, part of medium can circulate along the cambered surface of the eccentric spherical crown along the medium circulation route and clean particles on the surface of the eccentric spherical crown, so that the self-cleaning effect can be achieved, meanwhile, the friction between the eccentric spherical crown and the valve seat is avoided, and the friction between the eccentric spherical crown and the valve seat with the particles can be avoided.
Drawings
Fig. 1 is a schematic view of the assembly of the present invention.
FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1 in accordance with the present invention.
Fig. 3 is a right side view of the inner baffle of fig. 2 and associated components provided thereon in accordance with the present invention.
Fig. 4 is a cross-sectional view in the direction N-N of fig. 3 in accordance with the present invention.
Fig. 5 is a cross-sectional view in the direction B-B of fig. 1 in accordance with the present invention.
Fig. 6 is a top view of the relevant components of the guide rail slider and the compression member of fig. 5 according to the present invention.
Fig. 7 is a front view of the spur gear one and the spur gear two of the present invention, wherein the spur gear two is rotatably disposed on the abutting slider shown in fig. 6.
Fig. 8 is a schematic view of an outer baffle and filter frame of the present invention.
The marks in the drawings provided by the invention are as follows:
1-valve seat, 11-sealing sleeve, 21-valve shaft, 22-valve core and 23-eccentric spherical crown;
31-inner baffle plates, 311-first constant flow passages, 32-filter frames, 321-movable flow passages, 33-screw rods and 34-guide rods;
35-abutting pieces, 351-push-pull rods, 352-pressure receiving pieces, 3521-abutting sliding blocks, 3522-abutting inclined rods, 36-nuts and 37-elastic pieces;
41-spiral guide rails, 42-guide rail sliding blocks, 43-transmission toothed rings and 44-driving gears;
51-rack one, 52-rack two, 53-spur gear one, 54-spur gear two;
61-an outer baffle, 611-a constant flow channel II and 62-a convex thorn;
c-valve axis center line, d-valve seat center line, e-medium flow path.
Detailed Description
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and further, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
One embodiment is: 1-4, an eccentric rotary valve with anti-seizing function comprises a valve seat 1, a valve shaft 21, a valve core 22, an eccentric spherical crown 23, a sealing sleeve 11, an inner baffle 31, a filter frame 32 and a transmission component, wherein the valve shaft 21 is rotatably arranged at the upper part of the valve seat 1, the valve shaft 21 penetrates through the valve seat 1, the lower end of the valve shaft 21 is connected with the valve core 22, the outer side of the valve core 22 is connected with the eccentric spherical crown 23 positioned in the valve seat 1, the sealing sleeve 11 is arranged at a medium flow passage of the valve seat 1, the eccentric spherical crown 23 has a closing state for blocking the sealing sleeve 11 and an opening state deviating from the sealing sleeve 11 along with the rotation of the valve shaft 21, a rubber sealing ring is connected at the position where the sealing sleeve 11 contacts the eccentric spherical crown 23, a round angle is chamfered at the position where the eccentric spherical crown 23 contacts the sealing sleeve 11, and the round angle of the eccentric spherical crown 23 can be jointed with the rubber sealing ring; one side of the sealing sleeve 11 is connected with an inner baffle 31 with a conical shape, a circle of first flow channel 311 for medium circulation is arranged on the inner baffle 31, one side of the inner baffle 31 bearing the medium is rotatably provided with a filter frame 32 for screening particles in the medium passing through the first flow channel 311, the filter frame 32 is provided with a flow channel 321 which is suitable for corresponding to and staggering the first flow channel 311, a transmission assembly is arranged between the filter frame 32 and the inner baffle 31, and the eccentric spherical crown 23 drives the flow channel 321 on the filter frame 32 and the first flow channel 311 on the inner baffle 31 to stagger through the transmission assembly when in a closed state.
As shown in fig. 4, the transmission assembly includes a screw 33, a guide rod 34, a collision member 35, an elastic member 37 and a nut 36, the screw 33 is connected to the center of the filter frame 32, the guide rod 34 with a T-shape is connected to one side of the inner baffle 31 near the eccentric spherical crown 23, the guide rod 34 is slidably provided with the collision member 35, two elastic members 37 opposite to each other in front and back are connected between the collision member 35 and the inner baffle 31, the elastic members 37 are spring pieces, and the collision member 35 is provided with a nut 36 screwed with the screw 33 for extruding the screw 33 to rotate.
An operator can apply the corresponding technical scheme in the device to the technology of the valve according to specific conditions, initially, the moving flow channel 321 corresponds to the first fixed flow channel 311 and the second fixed flow channel 611, when the device is used for assisting in medium conveying, the medium can circulate through the first fixed flow channel 311, the second fixed flow channel 611 and the moving flow channel 321, when the eccentric spherical crown 23 is required to block the sealing sleeve 11, the valve shaft 21 is driven to rotate by an external power source so as to drive the valve shaft 21 to drive the eccentric spherical crown 23 to rotate through the valve core 22, before the eccentric spherical crown 23 blocks the sealing sleeve 11, the eccentric spherical crown 23 rotates to press the abutting piece 35 to move left, the abutting piece 35 drives the nut 36 to move left to be meshed with the screw 33, the screw 33 can drive the filter frame 32 to rotate, at the moment, the moving flow channel 321 is staggered with the first fixed flow channel 311, particles in the medium can be screened out by the filter frame 32, the eccentric spherical crown 23 is prevented from continuing to circulate into the valve seat 1 before the eccentric spherical crown 23 blocks the sealing sleeve 11, at the moment, the particles in the valve seat 1 can flow out of the valve seat 1, and the eccentric spherical crown 23 continues to rotate to block the sealing sleeve 11; when the eccentric spherical crown 23 is required to deviate from the sealing sleeve 11, the power source is controlled to drive the valve shaft 21 to reversely rotate, so that the valve shaft 21 drives the eccentric spherical crown 23 to reversely rotate through the valve core 22, the eccentric spherical crown 23 can loosen the abutting piece 35, the abutting piece 35 immediately drives the nut 36 to move right to be meshed with the screw 33 under the action of the elastic piece 37, the screw 33 can drive the filter frame 32 to reversely rotate and reset, and the movable flow passage 321 at the moment corresponds to the constant flow passage one 311 again.
Two embodiments: on the basis of an embodiment, as shown in fig. 4, the abutting member 35 includes a push-pull rod 351 slidably disposed on the guide rod 34 and connected to the nut 36 and the elastic member 37, and a pressure receiving member 352 disposed at an end of the push-pull rod 351 and configured to receive the pressing force of the eccentric spherical crown 23, where the position of the pressure receiving member 352 is adapted to be adjusted at the end of the push-pull rod 351, and the position of the pressure receiving member 352 is adjusted according to the size of particles in the medium so as to change the time when the flow channel 321 is staggered from the constant flow channel 311.
As shown in fig. 1 and 5, the sealing sleeve 11 further comprises a spiral guide rail 41, a guide rail sliding block 42 and a fine adjustment assembly, the spiral guide rail 41 is rotatably arranged on the sealing sleeve 11, the guide rail sliding block 42 connected with the pressure receiving piece 352 is slidably arranged at the inner end of the spiral guide rail 41, the position of the pressure receiving piece 352 at the end part of the push-pull rod 351 is adjusted by the spiral guide rail 41 through the guide rail sliding block 42, and the fine adjustment assembly for rotating the spiral guide rail 41 is arranged between the valve seat 1 and the spiral guide rail 41.
As shown in fig. 5, the fine adjustment assembly comprises a transmission toothed ring 43 and a driving gear 44, the outer side of the spiral guide rail 41 is connected with the transmission toothed ring 43, teeth of the transmission toothed ring 43 are located on the outer side, a groove for the rotation of the transmission toothed ring 43 is formed in the inner side of the sealing sleeve 11, the driving gear 44 embedded into the valve seat 1 is rotatably arranged on the valve seat 1, and the driving gear 44 is meshed with the transmission toothed ring 43.
For the medium with large particles, the filter frame 32 needs to be rotated in advance, so that the movable flow channel 321 and the first constant flow channel 311 are staggered as soon as possible, and the phenomenon that the large particles in the medium are blocked is avoided in the process that the gap between the eccentric spherical crown 23 and the sealing sleeve 11 is gradually reduced; for the medium with smaller particles, the filter frame 32 does not need to be rotated in advance, so that the filter frame 32 can be prevented from greatly influencing the water flow, and the accuracy of controlling the water flow is further ensured; the rotation time of the filter frame 32 can be adjusted by moving the position of the pressure receiving element 352 on the push-pull rod 351, that is, rotating the driving gear 44 to be meshed with the driving gear ring 43, the driving gear ring 43 drives the spiral guide rail 41 to rotate, so that the spiral guide rail 41 drives the guide rail sliding block 42 to move backwards, the guide rail sliding block 42 drives the pressure receiving element 352 to move backwards, thereby adjusting the position of the pressure receiving element 352, and the eccentric spherical cap 23 can press the pressure receiving element 352 in advance when rotating, so that the condition is suitable for mediums with large particles, and vice versa.
Three embodiments: on the basis of the two embodiments, as shown in fig. 4, 6 and 7, the pressure receiving member 352 includes a pressing slider 3521, a pressing diagonal rod 3522, a first rack 51, a second rack 52, a first spur gear 53 and a second spur gear 54, the pressing slider 3521 is slidably disposed on the push-pull rod 351, the pressing diagonal rod 3522 is slidably disposed on the pressing slider 3521 and perpendicular to the pressing diagonal rod 3522 of the push-pull rod 351, the pressing diagonal rod 3522 is used for receiving the pressing force from the eccentric spherical cap 23, two vertically opposite first racks 51 are connected to the pressing diagonal rod 3522, the second rack 52 is connected to the right side of the end portion of the push-pull rod 351, the first spur gear 53 engaged with the second rack 52 is rotatably disposed on the pressing diagonal rod 3522, the second spur gears 54 engaged with the first rack 51 are respectively engaged with the first upper and lower spur gears 51, and the pressing diagonal rod 3522 is adapted to slide in a direction approaching the eccentric spherical cap 23 when the pressing slider 3521 is pushed toward the end portion of the eccentric spherical cap 351.
The guide rail slider 42 moves forward to drive the collision slider 3521 to move forward, the collision slider 3521 drives the first spur gear 53 to move forward to engage with the second rack 52, at this time, the first spur gear 53 also drives the second spur gear 54 to rotate to engage with the first rack 51, and the first rack 51 drives the collision diagonal rod 3522 to move out from the collision slider 3521 to the right, so that when the collision diagonal rod 3522 is far away from the eccentric spherical crown 23, the collision diagonal rod 3522 can still be extruded when the eccentric spherical crown 23 rotates.
Four embodiments: on the basis of the three embodiments, as shown in fig. 4 and 8, the filter further comprises an outer baffle plate 61, one side of the inner baffle plate 31 bearing media is connected with the outer baffle plate 61, an interlayer for accommodating the filter frame 32 is formed between the outer baffle plate 61 and the inner baffle plate 31, and the outer baffle plate 61 is provided with a second constant flow channel 611 corresponding to the first constant flow channel 311.
As shown in fig. 8, the filter further comprises a protrusion 62, a circle of protrusions 62 surrounding the second fixed flow channel 611 is connected to the position of the second fixed flow channel 611 on the outer baffle 61, and the protrusions 62 are used for cleaning particles screened by the filter frame 32.
When the medium circulates, the outer baffle 61 can block the surface of the filter frame 32 receiving the medium, so that particles on the medium are prevented from being attached to the filter frame 32 in advance, when the filter frame 32 rotates, the protruding thorns 62 can clean the filter frame 32, and the cleaned particles can be washed away by the medium, so that the use of the filter frame 32 is ensured.
As shown in fig. 1, the center of the valve shaft 21 is biased to a side of the center of the valve seat 1 near the abutting member 35, and before the eccentric spherical cap 23 presses the abutting member 35, a space for particles to circulate in a gap between the eccentric spherical cap 23 and the sealing sleeve 11 is reserved, so that the eccentric spherical cap 23 is prevented from being blocked by the particles before the eccentric spherical cap 23 blocks the sealing sleeve 11. During the process of the eccentric spherical crown 23 rotating to block the sealing sleeve 11, a larger space is still reserved between the eccentric spherical crown 23 and the rear part of the sealing sleeve 11, so that particles flow away, and then the eccentric spherical crown 23 presses the abutting piece 35, and the filter frame 32 rotates.
As shown in fig. 1, when the eccentric spherical crown 23 deviates from the open state of the sealing sleeve 11, a medium circulation path e is left between the cambered surface of the eccentric spherical crown 23 and the valve seat 1, and a part of the medium flowing into the valve seat 1 circulates along the medium circulation path e on the cambered surface of the eccentric spherical crown 23 and cleans particles on the surface of the eccentric spherical crown 23. When the eccentric spherical crown 23 deviates from the opening state of the sealing sleeve 11, part of medium can circulate along the medium circulation path e on the cambered surface of the eccentric spherical crown 23 and clean particles on the surface of the eccentric spherical crown 23, so that the self-cleaning effect can be achieved, and the anti-jamming function is further achieved.
It is apparent that the above described embodiments are some, but not all, embodiments of the present invention, which merely represent preferred embodiments of the present invention, which are described more specifically and in detail, but are not to be construed as limiting the scope of the invention.
It should be noted that modifications, improvements and substitutions can be made by those skilled in the art without departing from the spirit of the invention, and therefore, based on the embodiments herein, all other embodiments that can be obtained by those skilled in the art without making inventive efforts fall within the scope of protection of the present invention.
Claims (5)
1. The utility model provides an eccentric rotary valve with anti-sticking function, includes disk seat (1), valve shaft (21), case (22), eccentric spherical crown (23) and sealed sleeve (11), and the upper portion rotation of disk seat (1) is equipped with valve shaft (21), the lower extreme of valve shaft (21) is connected with case (22), the outside of case (22) is connected with eccentric spherical crown (23), the medium runner department of disk seat (1) is equipped with sealed sleeve (11), eccentric spherical crown (23) have along with the rotation of valve shaft (21) and block up sealed sleeve (11) closed condition and skew sealed sleeve (11) open condition;
the filter is characterized by further comprising an inner baffle (31), a filter frame (32) and a transmission assembly, wherein one side of the sealing sleeve (11) is connected with the inner baffle (31), a first constant flow channel (311) for medium circulation is formed in the inner baffle (31), one side of the inner baffle (31) bearing a medium is rotationally provided with the filter frame (32) for screening particles in the medium passing through the first constant flow channel (311), the filter frame (32) is provided with a movable flow channel (321) which is suitable for being corresponding to and staggered with the first constant flow channel (311), a transmission assembly is arranged between the filter frame (32) and the inner baffle (31), and the eccentric spherical crown (23) drives the movable flow channel (321) on the filter frame (32) to be staggered with the first constant flow channel (311) on the inner baffle (31) through the transmission assembly in a closed state;
the transmission assembly comprises a screw (33), a guide rod (34), a collision piece (35), an elastic piece (37) and a nut (36), wherein the screw (33) is connected to the center of the filter frame (32), the guide rod (34) is connected to one side, close to the eccentric spherical crown (23), of the inner baffle (31), the guide rod (34) is provided with the collision piece (35) in a sliding manner, the elastic piece (37) is connected between the collision piece (35) and the inner baffle (31), and the nut (36) which is in threaded connection with the screw (33) and used for extruding the screw (33) to rotate is arranged on the collision piece (35);
the abutting piece (35) comprises a push-pull rod (351) which is arranged on the guide rod (34) in a sliding manner and is connected with the nut (36) and the elastic piece (37), and a pressure receiving piece (352) which is arranged at the end part of the push-pull rod (351) and is used for receiving the extrusion force of the eccentric spherical crown (23), the position of the pressure receiving piece (352) is suitable for being adjusted at the end part of the push-pull rod (351), and the position of the pressure receiving piece (352) is adjusted according to the size of particles in a medium so as to change the staggering time of the movable flow channel (321) and the constant flow channel one (311);
the sealing sleeve (11) is rotationally provided with a spiral guide rail (41) which is in plane spiral arrangement, the inner end of the spiral guide rail (41) is slidably provided with a guide rail slider (42) connected with the pressure receiving piece (352), the position of the pressure receiving piece (352) at the end part of the push-pull rod (351) is adjusted by the spiral guide rail (41) through the guide rail slider (42), and a fine adjustment assembly is arranged between the valve seat (1) and the spiral guide rail (41);
the fine adjustment assembly comprises a transmission toothed ring (43) and a driving gear (44), the outer side of the spiral guide rail (41) is connected with the transmission toothed ring (43), the driving gear (44) embedded into the valve seat (1) is rotatably arranged on the valve seat, and the driving gear (44) is meshed with the transmission toothed ring (43);
the pressure receiving piece (352) comprises a pressing sliding block (3521), a pressing inclined rod (3522), a first rack (51), a second rack (52), a first spur gear (53) and a second spur gear (54), the pressing sliding block (3521) is arranged on the pushing rod (351) in a sliding mode, the pressing inclined rod (3522) is arranged on the pressing sliding block (3521) in a sliding mode and perpendicular to the pushing rod (351), the first rack (51) is connected to the pressing inclined rod (3522), the second rack (52) is connected to the end portion of the pushing rod (351), the first spur gear (53) meshed with the second rack (52) is arranged on the pressing inclined rod (3522) in a rotating mode, the second spur gear (54) meshed with the first rack (51) is connected to the end portion of the first spur gear, and the pressing inclined rod (3522) is suitable for extending to the direction close to the eccentric spherical crown (23) when the pressing sliding block (3521) slides to the end portion of the pushing rod (351).
2. The eccentric rotary valve with the anti-blocking function according to claim 1, further comprising an outer baffle (61), wherein one side of the inner baffle (31) bearing a medium is connected with the outer baffle (61), an interlayer for accommodating the filter frame (32) is formed between the outer baffle (61) and the inner baffle (31), and a constant flow channel two (611) corresponding to the constant flow channel one (311) is formed on the outer baffle (61).
3. An eccentric rotary valve with anti-seizing function as claimed in claim 2, further comprising a protrusion (62), wherein a circle of protrusions (62) surrounding the second constant flow channel (611) is connected to the position of the second constant flow channel (611) on the outer baffle (61), and the protrusions (62) are used for cleaning the particles screened by the filter frame (32).
4. An eccentric rotary valve with anti-seize function according to any of claims 1-3, characterized in that the centre of the valve shaft (21) is offset towards the side of the centre of the valve seat (1) close to the abutment member (35), and that the space through which particles circulate in the gap between the eccentric spherical crown (23) and the sealing sleeve (11) is reserved before the eccentric spherical crown (23) presses the abutment member (35), avoiding that the eccentric spherical crown (23) blocks the sealing sleeve (11) before particles get stuck.
5. An eccentric rotary valve with anti-seize function according to claim 4, characterized in that the eccentric spherical crown (23) leaves a medium flow path (e) between the arc surface of the eccentric spherical crown (23) and the valve seat (1) when deviating from the open state of the sealing sleeve (11), and that part of the medium flowing into the valve seat (1) flows along the medium flow path (e) at the arc surface of the eccentric spherical crown (23) and cleans particles on the surface of the eccentric spherical crown (23).
Priority Applications (1)
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| CN117927685B (en) * | 2024-03-19 | 2024-06-14 | 艾坦姆流体控制技术(山东)有限公司 | Low-temperature regulating valve with high tightness |
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