CN114505444A - Tectorial membrane sand shale shaker is used in casting with prevent blockking up function - Google Patents
Tectorial membrane sand shale shaker is used in casting with prevent blockking up function Download PDFInfo
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- CN114505444A CN114505444A CN202210149084.XA CN202210149084A CN114505444A CN 114505444 A CN114505444 A CN 114505444A CN 202210149084 A CN202210149084 A CN 202210149084A CN 114505444 A CN114505444 A CN 114505444A
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- frame
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- fixedly connected
- screen
- sliding
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- 239000004576 sand Substances 0.000 title claims abstract description 58
- 238000005266 casting Methods 0.000 title claims abstract description 18
- 210000002489 tectorial membrane Anatomy 0.000 title claims abstract description 6
- 230000007246 mechanism Effects 0.000 claims abstract description 82
- 239000000463 material Substances 0.000 claims abstract description 63
- 239000012535 impurity Substances 0.000 claims abstract description 44
- 239000004744 fabric Substances 0.000 claims abstract description 35
- 230000008878 coupling Effects 0.000 claims description 48
- 238000010168 coupling process Methods 0.000 claims description 48
- 238000005859 coupling reaction Methods 0.000 claims description 48
- 238000007599 discharging Methods 0.000 claims description 27
- 238000004140 cleaning Methods 0.000 claims description 16
- 239000008187 granular material Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000005540 biological transmission Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000670 limiting effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
- B22C5/06—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sieving or magnetic separating
Abstract
The invention relates to the production field of precoated sand for casting, in particular to a precoated sand vibrating screen for casting, which has an anti-blocking function. The technical problem is as follows: overcome the large granule impurity of doping in the tectorial membrane sand and can block up the screen cloth of shale shaker, and the screen cloth vibration plays large granule impurity, when waiting large granule impurity to fall on the screen cloth again, can harm the screen cloth of shale shaker, reduces the life of shale shaker screen cloth. A casting precoated sand vibrating screen with an anti-blocking function comprises a first support frame, a second support frame, a screen protection mechanism and the like; the screen protection mechanism is fixedly connected between the first support frame and the second support frame. According to the invention, the screen protection mechanism is arranged, the first conveying roller is used for driving the material receiving frame to rotate clockwise, the impurities filtered on the screen are collected inside the material receiving frame, the fifth gear is used for driving the cross-shaped rotating frame to rotate clockwise, the impurities filtered on the screen are rolled inside the material receiving frame, and the situation that some impurities cannot be collected by the material receiving frame so as to block the screen holes on the screen is avoided.
Description
Technical Field
The invention relates to the production field of precoated sand for casting, in particular to a precoated sand vibrating screen for casting, which has an anti-blocking function.
Background
The precoated sand for casting is molding sand or core sand with a layer of solid resin film coated on the surface of the sand before molding, and in the production process of the precoated sand, a screen can screen the precoated sand to remove large-particle impurities doped in the precoated sand, so that the precoated sand is an essential process in the production process of the precoated sand.
The prior precoated sand for casting is in the screening process, because the phenomenon of caking appears in the precoated sand easily, because traditional screen cloth can not vibrate, consequently can not solve the problem of precoated sand caking, when adopting the shale shaker to filter the precoated sand, because the in-process that the shale shaker used, can make the screen cloth vibrate, the vibration through the screen cloth has reduced the probability that the precoated sand caking greatly, but the large granule impurity of doping in the precoated sand can block up the screen cloth of shale shaker, can overturn large granule impurity at the in-process of screen cloth vibration, when waiting for large granule impurity to fall on the screen cloth again, can collide with the screen cloth, so can damage the screen cloth of shale shaker, reduce the life of shale shaker screen cloth, consequently, it has the precoated sand shale shaker for casting that the function of preventing blockking up to need one kind in particular, in order to solve the problem that exists among the prior art.
Disclosure of Invention
In order to overcome the screen cloth that the large granule impurity of doping in the tectorial membrane sand can block up the shale shaker, and the screen cloth vibration plays large granule impurity, when waiting large granule impurity to fall on the screen cloth again, can harm the screen cloth of shale shaker, reduce the life's of shale shaker screen cloth shortcoming, the technical problem who solves is: provides a casting precoated sand vibrating screen with an anti-blocking function.
The technical scheme of the invention is as follows: the utility model provides a casting is with tectorial membrane sand shale shaker with prevent blockking up function, including first support frame, the second support frame, the unloading frame, 7 type unloading supports, screen cloth vibration mechanism, prevent blockking up mechanism and screen cloth protection mechanism, there is the unloading frame through the connecting block rigid coupling between the side left part on first support frame and the second support frame, it has the spout to open on unloading frame right side upper portion, it has a hole to open unloading frame right side lower part, be used for unloading frame unloading, the rigid coupling has 7 type unloading supports between the side right part under first support frame and the second support frame, screen cloth vibration mechanism rigid coupling is between first support frame and second support frame, prevent blockking up the mechanism rigid coupling between first support frame and second support frame, prevent blockking up the mechanism and be located inside screen cloth vibration mechanism, screen cloth protection mechanism rigid coupling is between first support frame and second support frame, screen cloth protection mechanism is located unloading frame upside.
Further, the screen vibrating mechanism comprises a first servo motor, a cam, a first support, a second support, a discharging frame, a discharging port, a triangular support, a first spring, a sliding part, a second spring, a supporting toothed plate, a first baffle and a screen, wherein the front side of the first support and the rear side of the second support are fixedly connected with the first servo motor, the cam is fixedly connected to an output shaft of the first servo motor, the first support is fixedly connected between the first support and the second support, the first support is positioned below the screen, the second support is fixedly connected between the first support and the second support, the second support is positioned on the left side of the first support, the discharging frame is fixedly connected between the second support and the first support, the front part of the discharging frame is fixedly connected with the discharging port, a group of triangular supports is fixedly connected to the upper surface of the first support and the upper surface of the second support, two triangular supports are arranged in the group of triangular supports, and a sliding groove is formed in the triangular supports, the lower end of the inner chute of the triangular support is fixedly connected with a first spring, the inner chute of the triangular support is slidably connected with a sliding part, the upper end of the first spring is fixedly connected with the lower end of the sliding part, the sliding part is sleeved with a second spring, one end of the second spring is fixedly connected with the sliding part, the other end of the second spring is fixedly connected with the upper end of the inner chute of the triangular support, the upper end of the sliding part is fixedly connected with a supporting toothed plate, the two first baffles are fixedly connected with the front side and the rear side of the right part of the blanking frame respectively, and the upper end of the supporting toothed plate is fixedly connected with a screen.
Further, the anti-blocking mechanism comprises a first rack, third supports, a first sliding support, a fourth support, a second sliding support, a rectangular frame, two triangular supports, an anti-blocking block and an anti-blocking moving assembly, the number of the third supports is two, the right ends of the two third supports are fixedly connected to the upper part of the left side surface of the 7-type blanking support, the left ends of the two third supports are fixedly connected with the first sliding support, the first sliding support is provided with two sliding grooves, the number of the fourth supports is two, the two fourth supports are fixedly connected to the lower end of the blanking frame, the second sliding support is fixedly connected between the lower ends of the two fourth supports, the second sliding support is provided with two sliding grooves, the number of the first racks is four, the front and back adjacent first racks are in a group, the sliding grooves on the first sliding support are connected with a group of first racks in a sliding manner, the sliding grooves on the second sliding support are connected with a group of first racks in a sliding manner, the rigid coupling has the rectangle frame between two sets of first racks, and the inside rigid coupling of rectangle frame has a plurality of triangular supports frame, and the rigid coupling has a plurality of to prevent stifled chock on every triangular supports frame, and every prevents that stifled chock all corresponds a sieve mesh on the screen cloth, and the downside rigid coupling of rectangle frame has prevents blockking up the removal subassembly.
Further, prevent blockking up and remove the subassembly including first pivot pole, first gear and second gear, first pivot pole is equipped with two, two first pivot poles all rotate to be connected in first support frame and second support frame, it is connected with two first gears to rotate on the first pivot pole, two adjacent first gears are a set of around, four first gears mesh with four supporting tooth plates respectively, it is connected with two second gears to rotate on the first pivot pole, two adjacent second gears are a set of around, every group second gear all is located an adjacent set of first gear inboard, four second gears mesh with four first racks respectively.
Further, the screen protection mechanism comprises a second servo motor, a rectangular support, fixed blocks, two second baffle plates, a blanking plate, a first conveying roller, two conveying rollers, a conveying belt, a material receiving frame, a screen protection material receiving assembly and a screen protection cleaning assembly, wherein the rectangular support is fixedly connected to the upper ends of the first support frame and the second support frame respectively, two sliding chutes are formed in the inner side surfaces of the two rectangular support frames, the second servo motor is fixedly connected to the front side of the front rectangular support frame, the fixed blocks are fixedly connected to the inner sides of the two rectangular support frames, the second baffle plates are fixedly connected to the inner sides of the two fixed blocks, the two adjacent second baffle plates and the first baffle plate form a sliding chute, the blanking plate is fixedly connected to the lower portion of the inner side of the front rectangular support frame, the first conveying roller is rotatably connected to the right portion of the rectangular support frame, the second conveying roller is rotatably connected to the left portion of the rectangular support frame, the conveying belt is sleeved between the first conveying roller and the second conveying roller, the conveying belt is sleeved with a plurality of material receiving frames, the left sides of the material receiving frames are fixedly connected with a screen protection material receiving assembly, and the material receiving frames are fixedly connected with a screen protection cleaning assembly.
Further, the screen protection material collecting assembly comprises a second rotating rod, a cross rotating frame, a fifth gear and a second rack, the left side of the material collecting frame is rotatably connected with the second rotating rod, the second rotating rod is fixedly connected with the plurality of cross rotating frames, the fifth gear is fixedly connected to the front portion of the second rotating rod, the second racks are fixedly connected to the lower portions of the outer sides of the two second baffles, and the fifth gear is meshed with the second racks.
Further, the lower end of the left side of the material receiving frame is arranged to be an inclined plane for conveniently collecting impurities, a plurality of sliding grooves are formed in the material receiving frame, and each sliding groove corresponds to the adjacent cross-shaped rotating frame.
Further, screen cloth protection clearance subassembly is including reciprocal lead screw, the third dwang, the clearance piece, sixth gear and third rack, it is connected with reciprocal lead screw to receive to rotate on the material frame, the third dwang is equipped with two, the equal rigid coupling of two third dwangs is inside receiving the material frame, two third dwangs longitudinal symmetry set up, clearance piece threaded connection is in reciprocal lead screw rear end, clearance piece sliding connection is in two third dwangs, the equal rigid coupling in both ends has the sixth gear around the reciprocal lead screw, the equal rigid coupling in two flitch outside upper portions down has the third rack, third rack and sixth gear engagement.
Further, the feeding device comprises a feeding control mechanism, the feeding control mechanism comprises half-tooth gears, fourth rotating rods, third gears, a first belt pulley, a fifth rotating rod, a second belt pulley, fourth gears, a sliding rod, a third spring, a sliding block, a discharging door and a discharging toothed plate, the half-tooth gears are fixedly connected to an output shaft of the first servo motor, the two half-tooth gears are located on the outer sides of the two cams, the number of the fourth rotating rods is two, the two fourth rotating rods are respectively and rotatably connected to the rear side of the first support frame and the front side of the second support frame, the third gears are rotatably connected to the fourth rotating rods, the two third gears are respectively engaged with the two half-tooth gears, the first belt pulley is fixedly connected to the fourth rotating rods, the two first belt pulleys are respectively located on the outer sides of the two third gears, the front end and the rear end of the fifth rotating rod are respectively and rotatably connected to the rear side of the first support frame and the front side of the second support frame, the rigid coupling has two second belt pulleys on the fifth dwang, it has the belt to control around between adjacent second belt pulley and the first belt pulley, the rigid coupling has two fourth gears on the fifth dwang, two fourth gears are located between two second belt pulleys, the upper end rigid coupling of unloading frame right side upper portion spout has the slide bar, the cover is equipped with the third spring on the slide bar, third spring one end rigid coupling in unloading frame, sliding connection has the sliding block on the slide bar, third spring other end rigid coupling in the sliding block, sliding block right side rigid coupling has the unloading door, the equal rigid coupling in both sides has unloading pinion rack before the unloading door, unloading pinion rack and fourth gear engagement.
Has the advantages that: according to the invention, the screen vibrating mechanism is arranged, and the two cams are driven by the two first servo motors to rotate anticlockwise so as to lift up the impurities filtered on the screen, so that the situation that the impurities filtered on the screen block the screen holes on the screen and influence the filtering effect of the screen is avoided; by arranging the anti-blocking mechanism, the four first racks are driven by the four second gears to move rightwards, so that impurities on the screen are prevented from being clamped between the screen holes and the anti-blocking blocks, and the filtering effect of the screen is prevented from being influenced; by arranging the screen protection mechanism, the first conveying roller is used for driving the material receiving frame to rotate clockwise, so that the material receiving frame collects the impurities filtered on the screen into the material receiving frame, the fifth gear is used for driving the cross-shaped rotating frame to rotate clockwise, the impurities filtered on the screen are rolled into the material receiving frame, and certain impurities are prevented from being collected by the material receiving frame, so that screen holes in the screen are blocked; the sixth gear drives the reciprocating screw rod to rotate clockwise, so that the cleaning block is driven to move back and forth, and impurities collected on the material collecting frame are cleaned; through setting up feeding control mechanism, utilize two half-tooth gear anticlockwise rotation transmission unloading doors to reciprocate, realized treating filterable reclaimed sand intermittent type nature's unloading, prevent to treat filterable reclaimed sand and flow to screen cloth upper portion always to when the screen cloth reciprocates and prevents that the jam piece from removing about, the impurity damage screen cloth and the jam piece of continuous flow in the reclaimed sand that treats on screen cloth upper portion of waiting to filter.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic perspective view of a first embodiment of a screen vibratory mechanism according to the present invention.
Fig. 3 is a schematic diagram of a second three-dimensional structure of the screen vibrating mechanism of the present invention.
Fig. 4 is a schematic diagram of a third three-dimensional structure of a screen vibrating mechanism according to the present invention.
Fig. 5 is a perspective sectional view of a screen vibrating mechanism according to the present invention.
Fig. 6 is a schematic perspective view of a first anti-clogging mechanism according to the present invention.
Fig. 7 is a schematic perspective view of a second anti-clogging mechanism according to the present invention.
Fig. 8 is a schematic perspective view of a first embodiment of a screen protection mechanism according to the present invention.
Fig. 9 is a schematic diagram of a second three-dimensional structure of the screen protection mechanism of the present invention.
Fig. 10 is a schematic diagram of a third perspective view of a screen protection mechanism according to the present invention.
Fig. 11 is an enlarged partial three-dimensional structure of the screen protection mechanism a of the present invention.
Fig. 12 is a schematic diagram of a fourth perspective view of a screen protection mechanism according to the present invention.
Fig. 13 is a schematic diagram of a fifth three-dimensional structure of the screen protection mechanism of the present invention.
Fig. 14 is a schematic perspective view of a first feeding control mechanism according to the present invention.
Fig. 15 is a schematic perspective view of a second feeding control mechanism according to the present invention.
Fig. 16 is a schematic view of a third perspective structure of the feeding control mechanism of the present invention.
Labeled as: 101-a first support frame, 102-a second support frame, 103-a blanking frame, 104-7 type blanking support, 201-a first servo motor, 202-a cam, 203-a first support frame, 204-a second support frame, 205-a blanking frame, 206-a discharge port, 207-a triangular support frame, 208-a first spring, 209-a sliding part, 210-a second spring, 211-a support toothed plate, 212-a first baffle, 213-a screen, 301-a first rotating rod, 302-a first gear, 303-a second gear, 304-a first rack, 305-a third support frame, 306-a first sliding support frame, 307-a fourth support frame, 308-a second sliding support frame, 309-a rectangular frame, 310-a triangular support frame, 311-an anti-blocking block, 401-a second servo motor, 402-a rectangular support, 403-a fixed block, 404-a second baffle, 405-a blanking plate, 406-a first conveying roller, 407-a second conveying roller, 408-a conveying belt, 409-a material receiving frame, 410-a second rotating rod, 411-a cross rotating frame, 412-a fifth gear, 413-a second rack, 414-a reciprocating screw, 415-a third rotating rod, 416-a cleaning block, 417-a sixth gear, 418-a third rack, 501-a half-tooth gear, 502-a fourth rotating rod, 503-a third gear, 504-a first belt pulley, 505-a fifth rotating rod, 506-a second belt pulley, 507-a fourth gear, 508-a sliding rod, 509-a third spring, 510-a sliding block, 511-a blanking door and 512-a blanking toothed plate.
Detailed Description
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Example 1
A coated sand vibrating screen with an anti-blocking function for casting is disclosed, as shown in figures 1-13, and comprises a first support frame 101, a second support frame 102, a blanking frame 103, a 7-type blanking support 104, a screen vibrating mechanism, an anti-blocking mechanism and a screen protecting mechanism, wherein the blanking frame 103 is fixedly connected between the left parts of the upper sides of the first support frame 101 and the second support frame 102 through a connecting block, the upper part of the right side of the blanking frame 103 is provided with a chute, the lower part of the right side of the blanking frame 103 is provided with a hole for blanking of the blanking frame 103, the 7-type blanking support 104 is fixedly connected between the right parts of the lower sides of the first support frame 101 and the second support frame 102, the screen vibrating mechanism is fixedly connected between the first support frame 101 and the second support frame 102, the anti-blocking mechanism is positioned inside the screen vibrating mechanism, the screen protecting mechanism is fixedly connected between the first support frame 101 and the second support frame 102, the screen protection mechanism is located on the upper side of the blanking frame 103.
When the device works, a worker puts the reclaimed sand to be filtered into the blanking frame 103, the reclaimed sand to be filtered flows into the blanking frame 103 from the blanking frame 103 to the upper part of the screen vibrating mechanism, at the moment, the screen vibrating mechanism is started to vibrate the reclaimed sand to be filtered on the reclaimed sand to be filtered, the filtered reclaimed sand flows downwards into the screen vibrating mechanism and then flows out of the device, the vibrating mechanism drives the anti-blocking mechanism and the screen protecting mechanism to work, the anti-blocking mechanism is used for preventing impurities in the reclaimed sand to be filtered from blocking the screen vibrating mechanism, the screen protecting mechanism is used for preventing the impurities in the reclaimed sand to be filtered from damaging the screen vibrating mechanism after the impurities in the reclaimed sand to be filtered are vibrated by the screen vibrating mechanism, after the anti-blocking mechanism starts to work, the residual impurities on the screen vibrating mechanism are jacked up, the screen holes of the screen vibrating mechanism are prevented from being blocked by the impurities, and the filtering effect of the device is influenced, after the residual impurities on the screen vibrating mechanism are jacked up, the screen protecting mechanism collects the residual impurities and then discharges the residual impurities until no more regenerated sand needs to be filtered, the screen vibrating mechanism is stopped, and the screen vibrating mechanism does not work to drive the anti-blocking mechanism and the screen protecting mechanism to stop working.
Example 2
On the basis of embodiment 1, as shown in fig. 2 to 13, the screen vibrating mechanism includes a first servo motor 201, a cam 202, a first bracket 203, a second bracket 204, a discharging frame 205, a discharging port 206, a triangular bracket 207, a first spring 208, a sliding member 209, a second spring 210, a supporting toothed plate 211, a first baffle 212, and a screen 213, the first servo motor 201 is fixedly connected to the front side of the first supporting frame 101 and the rear side of the second supporting frame 102, the cam 202 is fixedly connected to an output shaft of the first servo motor 201, the first bracket 203 is fixedly connected between the first supporting frame 101 and the second supporting frame 102, the first bracket 203 is located below the screen 213, the second bracket 204 is fixedly connected between the first supporting frame 101 and the second supporting frame 102, the second bracket 204 is located on the left side of the first bracket 203, the discharging frame 205 is fixedly connected between the second bracket 204 and the first supporting frame 203, the discharging port 206 is located at the front of the discharging frame 205, first support 203 upper surface and the equal rigid coupling of second support 204 upper surface have a set of A-frame 207, a set of A-frame 207 is equipped with two, the inside spout that has opened of A-frame 207, the inside spout lower extreme rigid coupling of A-frame 207 has first spring 208, sliding connection has slider 209 on the inside spout of A-frame 207, first spring 208 upper end rigid coupling is in slider 209 lower extreme, the cover is equipped with second spring 210 on slider 209, second spring 210 one end rigid coupling in slider 209, second spring 210 other end rigid coupling in A-frame 207, slider 209 upper end rigid coupling has supporting teeth board 211, two first baffles 212 rigid couplings in the right part front and back both sides of unloading frame 103 respectively, supporting teeth board 211 upper end rigid coupling has screen cloth 213.
The anti-blocking mechanism comprises a first rack 304, a third bracket 305, a first sliding bracket 306, a fourth bracket 307, a second sliding bracket 308, a rectangular frame 309, a triangular support frame 310, an anti-blocking block 311 and an anti-blocking moving component, wherein the number of the third bracket 305 is two, the right ends of the two third brackets 305 are fixedly connected to the upper part of the left side surface of the 7-type blanking bracket 104, the left ends of the two third brackets 305 are fixedly connected with the first sliding bracket 306, the first sliding bracket 306 is provided with two sliding grooves, the number of the fourth brackets 307 is two, the two fourth brackets 307 are fixedly connected to the lower end of the blanking frame 103, the second sliding bracket 308 is fixedly connected between the lower ends of the two fourth brackets 307, the second sliding bracket 308 is provided with two sliding grooves, the number of the first racks 304 is four, the front and back adjacent first racks 304 are a group, the first sliding brackets 306 are connected in the sliding grooves on the first sliding bracket 306 in a sliding way, the second sliding brackets 308 are connected in the sliding grooves on the first sliding brackets 304 in a group, the rigid coupling has rectangle frame 309 between two sets of first racks 304, and the inside rigid coupling of rectangle frame 309 has a plurality of triangular supports frame 310, and equal rigid coupling has a plurality of to prevent stifled chock 311 on every triangular supports frame 310, and every prevents stifled chock 311 and all corresponds a sieve mesh on the screen cloth 213, and rectangle frame 309's downside rigid coupling has prevents blockking up the removal subassembly.
The anti-blocking moving assembly comprises a first rotating rod 301, first gears 302 and second gears 303, the number of the first rotating rod 301 is two, the left side and the right side of each of the two first rotating rods 301 are rotatably connected to the first supporting frame 101 and the second supporting frame 102, the first rotating rod 301 is rotatably connected with the two first gears 302, the two adjacent first gears 302 in the front and the back are in a group, the four first gears 302 are respectively meshed with the four supporting toothed plates 211, the first rotating rod 301 is rotatably connected with the two second gears 303, the two adjacent second gears 303 in the front and the back are in a group, each group of second gears 303 are respectively located on the inner sides of the adjacent group of first gears 302, and the four second gears 303 are respectively meshed with the four first racks 304.
The screen protection mechanism comprises a second servo motor 401, rectangular supports 402, fixing blocks 403, second baffle plates 404, a blanking plate 405, a first conveying roller 406, a second conveying roller 407, a conveying belt 408, a material receiving frame 409, a screen protection material receiving assembly and a screen protection cleaning assembly, wherein the number of the rectangular supports 402 is two, the two rectangular supports 402 are respectively fixedly connected to the upper ends of the first support frame 101 and the second support frame 102, the inner side surfaces of the two rectangular supports 402 are respectively provided with two sliding grooves, the second servo motor 401 is fixedly connected to the front side of the front rectangular support 402, the inner sides of the two rectangular supports 402 are respectively fixedly connected with the fixing blocks 403, the inner sides of the two fixing blocks 403 are respectively fixedly connected with the second baffle plates 404, the adjacent two second baffle plates 404 and the first baffle plate 212 form one sliding groove, the lower part of the inner side of the front rectangular support 402 is fixedly connected with the blanking plate 405, the first conveying roller 406 is rotatably connected to the right part of the rectangular support 402, the second conveying roller 407 rotates to be connected in the left part of the rectangular support 402, a conveying belt 408 is sleeved between the first conveying roller 406 and the second conveying roller 407, a plurality of material receiving frames 409 are sleeved on the conveying belt 408, the left side of each material receiving frame 409 is fixedly connected with a screen protection material receiving assembly, and the material receiving frames 409 are fixedly connected with a screen protection cleaning assembly.
The screen protection receives the material subassembly including second dwang 410, cross rotating turret 411, fifth gear 412 and second rack 413, receives material frame 409 left side rotation and is connected with second dwang 410, and the rigid coupling has a plurality of cross rotating turret 411 on the second dwang 410, and the equal rigid coupling in both sides has fifth gear 412 around the second dwang 410, and the equal rigid coupling in outside lower part of two second baffles 404 has second rack 413, and fifth gear 412 meshes with second rack 413.
The lower end of the left side of the material receiving frame 409 is provided with an inclined plane for conveniently collecting impurities, a plurality of sliding grooves are formed in the material receiving frame 409, and each sliding groove corresponds to the adjacent cross-shaped rotating frame 411.
The screen protection cleaning assembly comprises a reciprocating screw 414, third rotating rods 415, cleaning blocks 416, a sixth gear 417 and a third gear rack 418, the reciprocating screw 414 is connected to the material receiving frame 409 in a rotating mode, the third rotating rods 415 are provided with two parts, the two third rotating rods 415 are fixedly connected to the interior of the material receiving frame 409, the two third rotating rods 415 are symmetrically arranged up and down, the cleaning blocks 416 are connected to the rear end of the reciprocating screw 414 in a threaded mode, the cleaning blocks 416 are connected to the two third rotating rods 415 in a sliding mode, the front end and the rear end of the reciprocating screw 414 are fixedly connected with the sixth gear 417, the upper portions of the outer sides of the two blanking plates 405 are fixedly connected with the third gear rack 418, and the third gear rack 418 is meshed with the sixth gear rack 417.
When the sand filter works, a worker puts the reclaimed sand to be filtered into the blanking frame 103, the reclaimed sand to be filtered flows to the upper part of the screen mesh 213 from the blanking frame 103 in the blanking frame 103, at the moment, the two first servo motors 201 are started, the output shafts of the two first servo motors 201 drive the two cams 202 to rotate anticlockwise, when the two cams 202 rotate anticlockwise, the tips of the cams extrude the screen mesh 213, the screen mesh 213 is extruded by the tips of the two cams 202 to move upwards, after the screen mesh 213 moves upwards, impurities filtered on the screen mesh 213 are overturned, the impurities filtered on the screen mesh 213 are prevented from blocking screen holes on the screen mesh 213, the filtering effect of the screen mesh 213 is influenced, the screen mesh 213 moves upwards to drive the four supporting tooth plates 211 to move upwards, the four supporting tooth plates 211 move upwards to drive the four sliding pieces 209 to move upwards, the four sliding pieces 209 move upwards to extrude the four second springs 210, and the four second springs 210 generate reverse acting force after being extruded, the four sliding parts 209 move upwards to not extrude the four first springs 208 any more, the four first springs 208 are not reset after being extruded any more, the four supporting toothed plates 211 move upwards to drive the four first gears 302 to rotate clockwise, the four first gears 302 drive the two first rotating rods 301 to rotate clockwise, the two first rotating rods 301 drive the four second gears 303 to rotate clockwise, the four second gears 303 rotate clockwise to drive the four first racks 304 to move rightwards, the four first racks 304 drive the rectangular frame 309 to move rightwards, the rectangular frame 309 drives the triangular supporting frames 310 to move rightwards, the triangular supporting frames 310 drive the anti-blocking blocks 311 thereon to move rightwards, the four first racks 304 drive the anti-blocking blocks 311 to move rightwards, so that impurities on the screen mesh 213 are prevented from being clamped between the screen mesh and the anti-blocking blocks 311, and the filtering effect of the screen mesh 213 is affected, when the tips of the two cams 202 do not press the screen 213 any more, at this time, under the action of the four second springs 210, the four sliders 209 move downward, the four sliders 209 drive the four supporting toothed plates 211 to move downward, the four supporting toothed plates 211 drive the screen 213 to move downward, when the four sliders 209 drive the four supporting toothed plates 211 to move downward, the four supporting toothed plates 211 drive the four first gears 302 to rotate counterclockwise, the four first gears 302 drive the two first rotating rods 301 to rotate counterclockwise, the two first rotating rods 301 drive the four second gears 303 to rotate counterclockwise, the four second gears 303 rotate counterclockwise to drive the four first racks 304 to move leftward and reset, at this time, the device completes resetting, and repeats in such a cycle, the filtered reclaimed sand flows out through the discharging frame 205 and the discharging port 206, until all the reclaimed sand to be filtered is filtered, the two first servo motors 201 are turned off, the device stops working.
In the process, the second servo motor 401 is started, a transmission shaft of the second servo motor 401 drives the first transmission roller 406 to rotate clockwise, the first transmission roller 406 drives the transmission belt 408 to move clockwise, the transmission belt 408 drives a plurality of material receiving frames 409 on the transmission belt to move clockwise, the material receiving frames 409 drive the accessory materials on the transmission belt to move clockwise, when one material receiving frame 409 moves to the lower end of the material receiving frame and contacts the upper surface of the anti-blocking block 311, the material receiving frame 409 collects the impurities filtered on the screen 213 into the material receiving frame 409, when the material receiving frame 409 drives the accessory materials on the transmission belt to move clockwise along two chutes on the rectangular support 402 until the fifth gear 412 contacts the second rack 413, the material receiving frame 409 continues to move clockwise, the fifth gear 412 rotates clockwise to drive the second rotation rod 410 to rotate clockwise, and the second rotation rod 410 drives a plurality of cross rotation frames 411 fixedly connected on the second rotation rod 410 to rotate clockwise, the cross rotating frame 411 rotates clockwise to roll the impurities filtered on the screen 213 into the collecting frame 409, so as to prevent certain impurities from being collected by the collecting frame 409, thereby blocking the screen holes on the screen 213, when the collecting frame 409 drives the accessory objects thereon to move clockwise until the fifth gear 412 no longer contacts the second rack 413, the fifth gear 412 no longer rotates, at this time, the collecting frame 409 drives the accessory objects thereon to move clockwise, when the collecting frame 409 drives the accessory objects thereon to move clockwise until the sixth gear 417 contacts the third rack 418, at this time, the collecting frame 409 continues to move clockwise, the sixth gear 417 rotates clockwise to drive the reciprocating screw 414 to rotate clockwise, at this time, under the limiting action of the two third rotating rods 415, the cleaning block 416 moves forward, the cleaning block 416 moves backward to push the impurities collected on the collecting frame 409 forward, when the collecting frame drives the accessory objects thereon to rotate clockwise until the sixth gear 417 contacts the midpoint of the third rack 418, the cleaning block 416 moves to the foremost end of the material receiving frame 409 to push all the impurities collected on the material receiving frame 409 out from the front part, the impurities are pushed onto the second baffle 404 and are discharged by the 7-type blanking bracket 104, part of the impurities which are not collected by the material receiving frame 409 are also discharged by the 7-type blanking bracket 104, the impurities collected on the material receiving frame 409 are cleaned, at the moment, the material receiving frame 409 drives the accessory objects thereon to continuously rotate clockwise, when the material receiving frame 409 drives the accessory to rotate clockwise until the sixth gear 417 passes by and is far away from the middle point of the third rack 418, under the action of the reciprocating screw 414, the cleaning block 416 starts to move forwards for resetting until the material receiving rack 409 drives the accessory to rotate clockwise until the sixth gear 417 no longer contacts the middle point of the third rack 418, the reciprocating lead screw 414 is no longer rotating clockwise and the cleaning block 416 is now reset to the initial state where the sixth gear 417 never contacts the third rack 418.
Example 3
Based on embodiment 2, as shown in fig. 14 to 16, the present invention further includes a feeding control mechanism, the feeding control mechanism includes a half-tooth gear 501, a fourth rotating rod 502, a third gear 503, a first belt pulley 504, a fifth rotating rod 505, a second belt pulley 506, a fourth gear 507, a sliding rod 508, a third spring 509, a sliding block 510, a blanking door 511, and a blanking toothed plate 512, the half-tooth gear 501 is fixedly connected to an output shaft of the first servo motor 201, the two half-tooth gears 501 are located outside the two cams 202, the number of the fourth rotating rods 502 is two, the two fourth rotating rods 502 are respectively rotatably connected to the rear side of the first supporting frame 101 and the front side of the second supporting frame 102, the fourth rotating rod 502 is rotatably connected to the third gear 503, the two third gears 503 are respectively engaged with the two half-tooth gears 501, the fourth rotating rod 502 is fixedly connected to the first belt pulley 504, the two first belt pulleys are respectively located outside the two third gears 503, the front end and the rear end of a fifth rotating rod 505 are respectively connected to the rear side of the first support frame 101 and the front side of the second support frame 102 in a rotating mode, two second pulleys 506 are fixedly connected to the fifth rotating rod 505, a belt is wound between the left adjacent second pulley 506 and the right adjacent first pulley 504, two fourth gears 507 are fixedly connected to the fifth rotating rod 505, the two fourth gears 507 are located between the two second pulleys 506, a sliding rod 508 is fixedly connected to the upper end of a sliding groove in the upper portion of the right side of the blanking frame 103, a third spring 509 is sleeved on the sliding rod 508, one end of the third spring 509 is fixedly connected to the blanking frame 103, a sliding block 510 is slidably connected to the sliding rod 508, the other end of the sliding block 509 is fixedly connected to the sliding block 510, a blanking door 511 is fixedly connected to the right side of the sliding rod 510, blanking door 511 and the front and rear sides of the blanking door 511 are fixedly connected to blanking toothed plates 512, and the blanking toothed plates 512 are meshed with the fourth gears 507.
The output shafts of the two first servo motors 201 drive the two cams 202 and the two half-tooth gears 501 to rotate counterclockwise, when teeth of the two half-tooth gears 501 contact the two third gears 503, the two half-tooth gears 501 drive the two third gears 503 to rotate clockwise, the two third gears 503 drive the two fourth rotating rods 502 to rotate clockwise, the two fourth rotating rods 502 drive the two first belt pulleys 504 to rotate clockwise, the two first belt pulleys 504 drive the two second belt pulleys 506 to rotate clockwise through belts, the two second belt pulleys 506 drive the fifth rotating rod 505 to rotate clockwise, the fifth rotating rod 505 drives the two fourth gears 507 fixedly connected thereon to rotate clockwise, the two fourth gears 507 rotate clockwise to drive the two blanking toothed plates 512 to move upward, the two blanking toothed plates 512 drive the blanking door 511 to move upward, the blanking door 511 moves upward and does not block the right hole of the lower blanking frame 103 any more, the reclaimed sand to be filtered flows to the upper part of the screen 213 from the discharging frame 103 through the lower hole at the right side of the discharging frame 103, the discharging door 511 drives the sliding block 510 to move upwards, the sliding block 510 moves upwards to extrude the third spring 509, the third spring 509 is extruded to generate a downward acting force, teeth of the two half-tooth gears 501 are not contacted with the two third gears 503, at the moment, the two half-tooth gears 501 can not drive the two third gears 503 to rotate clockwise any more, at the moment, under the action of the third spring 509, the sliding block 510 moves downwards, the sliding block 510 drives the discharging door 511 to move downwards, the discharging door 511 drives the two discharging toothed plates 512 to move downwards, the two discharging toothed plates 512 move downwards to drive the two fourth gears 507 to rotate anticlockwise, the two fourth gears 507 drive the fifth rotating rod 505 to rotate anticlockwise, the fifth rotating rod 505 drives the two second belt pulleys 506 fixedly connected thereon to rotate anticlockwise, the two second belt pulleys 506 drive the two first belt pulleys 504 to rotate anticlockwise through the belts until the blanking door 511 moves downwards to completely block the lower hole on the right side of the blanking frame 103, and the to-be-filtered reclaimed sand does not flow to the upper part of the screen mesh 213 from the blanking frame 103 through the lower hole on the right side of the blanking frame 103, so that the circulation is repeated, the intermittent blanking of the to-be-filtered reclaimed sand is realized, the to-be-filtered reclaimed sand is prevented from flowing to the upper part of the screen mesh 213 all the time, and when the screen mesh 213 moves up and down and the anti-blocking block 311 moves left and right, impurities in the to-be-filtered reclaimed sand continuously flowing to the upper part of the screen mesh 213 damage the screen mesh 213 and the anti-blocking block 311.
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 (9)
1. The utility model provides a tectorial membrane sand shale shaker is used in casting with prevent blockking up function, including first support frame (101), second support frame (102), unloading frame (103) and 7 types unloading support (104), there is unloading frame (103) through the connecting block rigid coupling between first support frame (101) and second support frame (102) upside left part, unloading frame (103) right side upper portion is opened there is the spout, unloading frame (103) right side lower part is opened there is a hole for unloading frame (103) unloading, the rigid coupling has 7 types unloading support (104) between first support frame (101) and second support frame (102) downside right part, its characterized in that: the anti-blocking device is characterized by further comprising a screen vibrating mechanism, an anti-blocking mechanism and a screen protecting mechanism, wherein the screen vibrating mechanism is fixedly connected between the first supporting frame (101) and the second supporting frame (102), the anti-blocking mechanism is located inside the screen vibrating mechanism, the screen protecting mechanism is fixedly connected between the first supporting frame (101) and the second supporting frame (102), and the screen protecting mechanism is located on the upper side of the blanking frame (103).
2. The casting precoated sand vibrating screen with the anti-blocking function according to claim 1, wherein: the screen vibrating mechanism comprises a first servo motor (201), a cam (202), a first support (203), a second support (204), a discharging frame (205), a discharging port (206), a triangular support (207), a first spring (208), a sliding part (209), a second spring (210), a supporting toothed plate (211), a first baffle (212) and a screen (213), wherein the front side of the first support (101) and the rear side of the second support (102) are fixedly connected with the first servo motor (201), the cam (202) is fixedly connected to an output shaft of the first servo motor (201), the first support (203) is fixedly connected between the first support (101) and the second support (102), the first support (203) is positioned below the screen (213), the second support (204) is fixedly connected between the first support (101) and the second support (102), the second support (204) is positioned on the left side of the first support (203), a discharging frame (205) is fixedly connected between the second support (204) and the first support (203), a discharging port (206) is fixedly connected to the front part of the discharging frame (205), a group of triangular supports (207) is fixedly connected to the upper surface of the first support (203) and the upper surface of the second support (204), two triangular supports (207) are arranged, a sliding groove is formed in each triangular support (207), a first spring (208) is fixedly connected to the lower end of the sliding groove in each triangular support (207), a sliding piece (209) is slidably connected to the upper end of each triangular support (207), the upper end of each first spring (208) is fixedly connected to the lower end of each sliding piece (209), a second spring (210) is sleeved on each sliding piece (209), one end of each second spring (210) is fixedly connected to each sliding piece (209), the other end of each second spring (210) is fixedly connected to each triangular support (207), a supporting toothed plate (211) is fixedly connected to the upper end of each sliding piece (209), and two first baffle plates (212) are fixedly connected to the front side and the rear side of the right part of the discharging frame (103) respectively, the upper end of the supporting toothed plate (211) is fixedly connected with a screen (213).
3. The casting precoated sand vibrating screen with the anti-blocking function according to claim 1, wherein: the anti-blocking mechanism comprises a first rack (304), third brackets (305), first sliding brackets (306), fourth brackets (307), second sliding brackets (308), a rectangular frame (309), triangular supporting frames (310), anti-blocking blocks (311) and anti-blocking moving components, wherein the number of the third brackets (305) is two, the right ends of the two third brackets (305) are fixedly connected to the upper part of the left side surface of the 7-type blanking bracket (104), the left ends of the two third brackets (305) are fixedly connected with the first sliding brackets (306), the first sliding brackets (306) are provided with two sliding chutes, the number of the fourth brackets (307) is two, the two fourth brackets (307) are fixedly connected to the lower end of the blanking frame (103), the second sliding brackets (308) are fixedly connected between the lower ends of the two fourth brackets (307), the second sliding brackets (308) are provided with two sliding chutes, the number of the first racks (304) is four, front and back adjacent first rack (304) are a set of, sliding connection has a set of first rack (304) on first sliding support (306) the spout, sliding connection has a set of first rack (304) on second sliding support (308), the rigid coupling has rectangle frame (309) between two sets of first rack (304), the inside rigid coupling of rectangle frame (309) has a plurality of triangular supports frame (310), the rigid coupling has a plurality of to prevent blockking up piece (311) on every triangular supports frame (310), every prevents that blockking up piece (311) all corresponds a sieve mesh on screen cloth (213), the downside rigid coupling of rectangle frame (309) has prevents blockking up the removal subassembly.
4. The foundry coated sand vibrating screen with the anti-clogging function as defined in claim 3, wherein: prevent blockking up and remove subassembly including first pole (301) of rotating, first gear (302) and second gear (303), first pole (301) of rotating is equipped with two, two first poles of rotating (301) all rotate and connect in first support frame (101) and second support frame (102), it is connected with two first gear (302) to rotate on first pole (301), two adjacent first gear (302) are a set of around, four first gear (302) mesh with four supporting tooth plate (211) respectively, it is connected with two second gear (303) to rotate on first pole (301), two adjacent second gear (303) are a set of around, every group second gear (303) all are located adjacent a set of first gear (302) inboard, four second gear (303) mesh with four first rack (304) respectively.
5. The casting precoated sand vibrating screen with the anti-blocking function according to claim 1, wherein: the screen protection mechanism comprises a second servo motor (401), rectangular supports (402), fixing blocks (403), second baffles (404), a blanking plate (405), a first conveying roller (406), a second conveying roller (407), a conveying belt (408), a material receiving frame (409), a screen protection material receiving assembly and a screen protection cleaning assembly, wherein the number of the rectangular supports (402) is two, the two rectangular supports (402) are fixedly connected to the upper ends of a first supporting frame (101) and a second supporting frame (102) respectively, two sliding chutes are formed in the inner sides of the two rectangular supports (402), the second servo motor (401) is fixedly connected to the front side of the front rectangular support (402), the fixing blocks (403) are fixedly connected to the inner sides of the two rectangular supports (402), the second baffles (404) are fixedly connected to the inner sides of the two fixing blocks (403), and a sliding chute is formed by the two adjacent second baffles (404) and the first baffle (212), flitch (405) down have to inboard lower part rigid coupling of front side rectangle support (402), first transfer roller (406) rotate to be connected in rectangle support (402) right part, second transfer roller (407) rotate to be connected in rectangle support (402) left part, the cover is equipped with conveyer belt (408) between first transfer roller (406) and second transfer roller (407), the cover is equipped with a plurality of and receives work or material rest (409) on conveyer belt (408), it has the screen protection to receive work or material rest (409) left side rigid coupling, receive work or material rest (409) rigid coupling and have screen protection clearance subassembly.
6. The foundry coated sand vibrating screen with the anti-clogging function as defined in claim 5, wherein: the screen protection receives the material subassembly including second dwang (410), cross rotating turret (411), fifth gear (412) and second rack (413), it is connected with second dwang (410) to receive work or material rest (409) left side rotation, the rigid coupling has a plurality of cross rotating turret (411) on second dwang (410), the anterior rigid coupling of second dwang (410) has fifth gear (412), the equal rigid coupling in outside lower part of two second baffles (404) has second rack (413), fifth gear (412) and second rack (413) meshing.
7. The foundry coated sand vibrating screen with the anti-clogging function as defined in claim 5, wherein: the lower end of the left side of the material collecting frame (409) is provided with an inclined plane for conveniently collecting impurities, a plurality of sliding grooves are formed in the material collecting frame (409), and each sliding groove corresponds to the adjacent cross-shaped rotating frame (411).
8. The foundry coated sand vibrating screen with the anti-clogging function as defined in claim 5, wherein: screen cloth protection clearance subassembly is including reciprocal lead screw (414), third dwang (415), clearance piece (416), sixth gear (417) and third rack (418), it is connected with reciprocal lead screw (414) to receive to rotate on work or material rest (409), third dwang (415) are equipped with two, two equal rigid couplings of third dwang (415) are inside in receiving work or material rest (409), two third dwang (415) longitudinal symmetry set up, clearance piece (416) threaded connection is in reciprocal lead screw (414) rear end, clearance piece (416) sliding connection is in two third dwang (415), both ends are all rigid coupled around reciprocal lead screw (414) have sixth gear (417), two equal rigid couplings in flitch (405) outside upper portion have third rack (418) down, third rack (418) and sixth gear (417) mesh.
9. The casting precoated sand vibrating screen with the anti-blocking function according to claim 1, wherein: the automatic feeding device also comprises a feeding control mechanism, the feeding control mechanism comprises a half-tooth gear (501), a fourth rotating rod (502), a third gear (503), a first belt pulley (504), a fifth rotating rod (505), a second belt pulley (506), a fourth gear (507), a sliding rod (508), a third spring (509), a sliding block (510), a blanking door (511) and a blanking toothed plate (512), the half-tooth gear (501) is fixedly connected to an output shaft of the first servo motor (201), the two half-tooth gears (501) are respectively positioned at the outer sides of the two cams (202), the number of the fourth rotating rod (502) is two, the two fourth rotating rods (502) are respectively and rotatably connected to the rear side of the first supporting frame (101) and the front side of the second supporting frame (102), the third gear (503) is rotatably connected to the fourth rotating rod (502), and the two third gears (503) are respectively meshed with the two half-tooth gears (501), a first belt pulley (504) is fixedly connected to the fourth rotating rod (502), the two first belt pulleys (504) are respectively positioned at the outer sides of two third gears (503), a fifth rotating rod (505) is rotatably connected to the rear side of the first supporting frame (101) and the front side of the second supporting frame (102), two second belt pulleys (506) are fixedly connected to the fifth rotating rod (505), a belt is wound between the left and right adjacent second belt pulleys (506) and the first belt pulley (504), two fourth gears (507) are fixedly connected to the fifth rotating rod (505), the two fourth gears (507) are positioned between the two second belt pulleys (506), a sliding rod (508) is fixedly connected to the upper end of a sliding groove at the upper part of the right side of the blanking frame (103), a third spring (509) is sleeved on the sliding rod (508), one end of the third spring (509) is fixedly connected to the blanking frame (103), and the sliding block (510) is slidably connected to the sliding rod (508), the other end of the third spring (509) is fixedly connected with the sliding block (510), a blanking door (511) is fixedly connected to the right side of the sliding block (510), blanking toothed plates (512) are fixedly connected to the front side and the rear side of the blanking door (511), and the blanking toothed plates (512) are meshed with the fourth gear (507).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210149084.XA CN114505444A (en) | 2022-02-18 | 2022-02-18 | Tectorial membrane sand shale shaker is used in casting with prevent blockking up function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210149084.XA CN114505444A (en) | 2022-02-18 | 2022-02-18 | Tectorial membrane sand shale shaker is used in casting with prevent blockking up function |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210149084.XA Pending CN114505444A (en) | 2022-02-18 | 2022-02-18 | Tectorial membrane sand shale shaker is used in casting with prevent blockking up function |
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Cited By (1)
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| CN115971046A (en) * | 2023-01-31 | 2023-04-18 | 江苏天沃重工科技有限公司 | Prevent grit material shale shaker of jam |
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Effective date of registration: 20240402 Address after: 048000, 150 meters east of Linghou Village, Fengcheng Town, Yangcheng County, Jincheng City, Shanxi Province Applicant after: Shanxi Kailide Motor Parts Co.,Ltd. Country or region after: China Address before: 030009 room 406, building 2, No. 24, beixiaoqiang, Xinghualing District, Taiyuan City, Shanxi Province Applicant before: Han Maoqi Country or region before: China |