CN114433482B - Coarse sand and fine sand circulating screening device for building construction - Google Patents
Coarse sand and fine sand circulating screening device for building construction Download PDFInfo
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- CN114433482B CN114433482B CN202111549721.4A CN202111549721A CN114433482B CN 114433482 B CN114433482 B CN 114433482B CN 202111549721 A CN202111549721 A CN 202111549721A CN 114433482 B CN114433482 B CN 114433482B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/18—Drum screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B2201/00—Details applicable to machines for screening using sieves or gratings
- B07B2201/04—Multiple deck screening devices comprising one or more superimposed screens
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- Combined Means For Separation Of Solids (AREA)
Abstract
The application relates to the field of building construction, in particular to a coarse sand and fine sand circulating screening device for building construction, which comprises a screening barrel body arranged on a support, wherein a material collecting box body used for classifying coarse sand and fine sand is further arranged on the support and positioned at the bottom of the screening barrel body.
Description
Technical Field
The application relates to the field of building construction, in particular to a coarse sand and fine sand circulating screening device for building construction.
Background
The sand is an indispensable basic raw material in the construction field, various impurities such as broken stone, garbage and the like exist in the sand, sand grains in the sand are also classified into different grades, the purposes are different, and the particle size grades of needed sand are different, so that sand is required to be screened before the sand is utilized, fine sand with smaller particles is often used when a house or other buildings are constructed, coarse sand is generally screened, in the screening process, a screen is an indispensable tool, however, the existing sand screening device for construction has the problem of poor screening effect, in the using process, the impurities doped in the sand cannot be thoroughly screened out, the condition that the fine sand cannot be screened out in the coarse sand is easy to exist in the screening process, the screening accuracy is low, and the screening effect is poor.
The currently disclosed China patent CN202020461474.7 discloses a sand screening device for building construction, which comprises a feed inlet, a box body, a screen plate, a vibrator, a stop block, a sliding block, a guide rail, a screen, a hydraulic mechanism, a universal wheel, a feed outlet, a cylinder, a connecting block, a shield, a sealing ring and a connecting rod, wherein the bottom of the bottom plate is provided with the feed outlet A and the universal wheel, the hydraulic mechanism is arranged at two ends of the bottom plate and comprises a hydraulic drive, a hydraulic rod and a foot pad, the bottom of the hydraulic drive is connected with the hydraulic rod, and the foot pad is arranged at the bottom of the hydraulic rod; the top of the bottom plate is welded with a box body, the lower part of the inner wall of the box body is welded with a stop block B, the bottom in the box body is provided with a cylinder, the cylinder is connected with one end of a connecting rod through a connecting block, the other end of the connecting rod is provided with a screen, a protecting cover is arranged outside the connecting block, a sealing ring is arranged between the top of the protecting cover and the connecting rod, the outer wall of the protecting cover is welded with a stop block C, and the stop block C is matched with the stop block B; the two ends of the screen are provided with sliding blocks, the sliding blocks are matched with guide rails, and the guide rails are arranged on the inner wall of the box body; the novel vibrating screen is characterized in that a baffle A is arranged at the top of a guide rail on the inner wall of the box body, a screen plate is arranged in the box body above the baffle A, a vibrator is arranged at one end of the bottom of the screen plate, a discharge hole B is formed in the wall of the box body at the other end of the screen plate, the discharge hole B extends out of the box body, and a feed inlet is formed in the top of the box body.
According to the above patent, the effect of screening coarse sand and fine sand is achieved only by vibrating the screen plate, however, fine sand and coarse sand are not easily screened out in the coarse sand during the screening process, and therefore, at present, a screening device capable of circularly screening coarse sand again after screening fine sand and coarse sand is needed.
Disclosure of Invention
Based on the above, it is necessary to provide a coarse sand and fine sand circulating screening device for building construction aiming at the problems in the prior art, and the coarse sand and fine sand circulating screening device is matched with the circulating feed back device, so that coarse sand and fine sand circulating screening is realized, the condition that fine sand is mixed in coarse sand and is not easily screened out is avoided, the coarse sand and fine sand screening is ensured to be more accurate, and the coarse sand and fine sand screening effect is improved.
In order to solve the problems in the prior art, the application adopts the following technical scheme:
the application provides a coarse sand and fine sand circulating screening device for building construction, which comprises a screening barrel body arranged on a support and used for screening coarse sand and fine sand, wherein a material collecting box body used for classifying the coarse sand and the fine sand is further arranged on the support and positioned at the bottom of the screening barrel body, the screening barrel body consists of an inner barrel and an outer barrel, the inner barrel and the outer barrel are coaxially sleeved on the inner barrel and are both fixed on the support, a screening cavity for the coarse sand and the fine sand to flow is formed between the outer barrel and the inner barrel, a feeding funnel is arranged on the upper surface of the peripheral wall of the outer barrel, a fine sand screening opening and a coarse sand screening opening are further formed in the lower surface of the peripheral wall of the outer barrel, a vibration screening device used for screening the fine sand and the coarse sand is further arranged at the fine sand screening opening and the coarse sand screening opening, and a circulating material returning device used for guiding the coarse sand into the inner barrel and returning the coarse sand from the inner barrel to the screening cavity is further arranged between the inner barrel and the material collecting box body.
Preferably, the vibration screening device comprises an arc screening plate arranged at the fine sand screening opening, the arc screening plate is identical to the fine sand screening opening in shape, two ends of the arc screening plate are connected to the outer barrel through vibration connectors, an arc pushing plate for promoting the arc screening plate to vibrate is further arranged on the lower surface of the peripheral wall of the outer barrel, the arc pushing plate can swing back and forth along the inner wall of the outer barrel towards the direction of the arc screening plate, and a pushing mechanism for driving the arc pushing plate to move is further arranged on the outer side of the outer barrel.
Preferably, the vibration connecting piece is specifically a vibration spring, a step is arranged at a fine sand screening opening of the outer barrel, two ends of the vibration spring are respectively fixed on the step and the surface of the arc screening plate, two ends of the arc screening plate are also connected with an elastic strip, and the free end of each elastic strip is also connected to the step of the outer barrel.
Preferably, both ends of the arc screening plate are provided with slopes, one end of the arc pushing plate, which is close to the arc screening plate, is also provided with a slope matched with the end of the arc pushing plate, an extension rod is outwards extended on the outer wall of the arc pushing plate through the outer barrel, a strip-shaped opening for the extension rod to move is formed in the peripheral wall of the outer barrel, and the extension rod is connected with the pushing mechanism through a connecting rod.
Preferably, the pushing mechanism comprises an eccentric wheel which is rotatably arranged on the outer wall of the material receiving box body, a push rod is further connected between an eccentric shaft of the eccentric wheel and the connecting rod, two ends of the push rod are respectively connected with the eccentric shaft and the connecting rod in a shaft mode, and a driving motor used for driving the eccentric wheel to rotate is further arranged on the outer wall of the material receiving box body, and the driving motor is connected with the eccentric wheel in a driving mode through a belt wheel and a belt.
Preferably, the box opening of the material receiving box body is matched with the peripheral wall of the outer barrel, the fine sand screening opening and the coarse sand screening opening are both positioned in the material receiving box body, a partition plate is arranged in the material receiving box body, the material receiving box body is divided into a fine sand storage space and a coarse sand storage space through the partition plate, the fine sand storage space is communicated with the fine sand screening opening, the coarse sand storage space is communicated with the coarse sand screening opening, and a fine sand discharging hopper communicated with the fine sand storage space and a coarse sand discharging hopper communicated with the coarse sand storage space are further arranged at the bottom of the material receiving box body respectively.
Preferably, the circulation feed back device comprises a vertical screw conveyor arranged on the support and positioned beside the screening barrel body and a stirring mechanism arranged in the inner barrel, wherein a circulation discharge hole communicated with the screening cavity is formed in a position, close to the feeding hopper, of the peripheral wall of the inner barrel, a communication pipeline is further arranged in a position, far away from the circulation discharge hole, of the peripheral wall of the inner barrel, the communication pipeline extends outwards through the outer barrel, the lower half part of the vertical screw conveyor is communicated with the coarse sand discharge hopper through a feed pipeline, and the upper half part of the vertical screw conveyor is communicated with the communication pipeline through a discharge pipeline.
Preferably, the stirring mechanism comprises a rotating rod which is coaxial and rotatably arranged on the inner barrel, a stirring motor used for driving the rotating rod to rotate is arranged on the bracket, four horizontal plates are uniformly distributed on the rod wall of the rotating rod along the circumferential direction of the rotating rod, and gaps are reserved between the end part of each horizontal plate and the inner wall of the inner barrel.
Preferably, the end part of each horizontal plate is obliquely provided with an inclined plate, the inclined direction of each inclined plate can face the circulating discharge hole, and the end part of each inclined plate is attached to the inner wall of the inner barrel.
Preferably, a springboard used for preventing coarse sand and fine sand from falling into the inner barrel from the circulating discharge port when being thrown is arranged in the screening cavity and between the material throwing funnel and the circulating discharge port, two ends of the springboard are respectively and fixedly connected on the inner wall of the outer barrel and the outer wall of the inner barrel, and a sliding gap for the coarse sand and fine sand to slide down is reserved between the springboard and the inner wall of the outer barrel.
Compared with the prior art, the application has the beneficial effects that:
1. according to the application, through the cooperation between the vibration screening device and the recycling device, the circulating screening of coarse sand and fine sand is realized, the condition that fine sand is mixed in the coarse sand and is not easy to screen out is avoided, the screening of the coarse sand and the fine sand is ensured to be more accurate, and the screening effect of the coarse sand and the fine sand is improved.
2. According to the application, the arc-shaped sieving plate is pushed by the arc-shaped push plate, so that the coarse sand and fine sand can be more effectively sieved while the arc-shaped sieving plate vibrates, and the sieving effect of the coarse sand and fine sand is improved.
3. The application realizes the smooth screening work of the arc screening plate on the coarse sand and the fine sand by arranging the two elastic strips, and avoids the condition that the coarse sand and the fine sand are mixed together and directly discharged.
4. According to the application, the swinging of the push rod is driven by the rotation of the eccentric wheel, and the arc-shaped push plate is pushed by the connection rod, so that the vibration of the arc-shaped screening plate is realized, fine sand is screened out by the arc-shaped screening plate, and coarse sand is discharged from the coarse sand screening opening.
5. According to the application, through the arrangement of the partition plates in the material receiving box, the coarse sand and the fine sand are stored separately, and the coarse sand and the fine sand are prevented from being mixed together.
6. According to the application, through the cooperation between the vertical screw conveyor and the stirring mechanism, the coarse sand is circularly screened, the fine sand mixed in the coarse sand can be completely separated, and the screening effect of the coarse sand and the fine sand is improved.
7. According to the application, through the arrangement of the inclined plates, the coarse sand flows towards the circulating discharge port, so that the coarse sand effectively enters the screening cavity, and the condition that a small part of coarse sand passes through the circulating discharge port and a large part of coarse sand remains in the inner barrel is avoided.
8. According to the application, through the arrangement of the springboard, the normal downward sliding of the coarse sand and the fine sand is realized, the condition that the coarse sand and the fine sand continuously slide towards the circulating discharge hole is avoided, and the effects of normal sliding of the coarse sand and the fine sand and guiding out of the coarse sand are improved.
Drawings
FIG. 1 is a schematic perspective view of the present application;
FIG. 2 is a front view of the present application;
FIG. 3 is a left side view of the present application;
FIG. 4 is a cross-sectional view at A-A of FIG. 3;
FIG. 5 is an enlarged schematic view at B of FIG. 4;
FIG. 6 is a schematic view of a partial perspective view of the present application;
fig. 7 is a front view of fig. 6;
FIG. 8 is a schematic perspective view of a screening drum;
FIG. 9 is a schematic diagram of a second perspective view of a screening drum;
fig. 10 is a schematic partial perspective view of the second embodiment of the present application.
The reference numerals in the figures are:
1-a bracket;
2-screening the barrel body; 2 A-An inner tub; 2a 1-a circulating discharge port; 2a 2-communication pipe; 2 b-an outer tub; 2b 1-a feeding funnel; 2b 2-fine sand screening openings; 2b 3-coarse sand screening openings; 2 c-a sieving chamber; 2 d-springboard;
3-a material receiving box; 3 a-separator; 3 b-fine sand storage space; 3 c-coarse sand storage space; 3 d-discharging fine sand from a hopper; 3 e-discharging coarse sand from a hopper;
4-a vibratory screening device; 4 A-Arc screening plates; 4a 1-ramp; 4 b-vibration connection; 4b 1-vibrating springs; 4b 2-elastic band; 4 c-an arc push plate; 4c 1-extension rod; 4c 2-connecting rod; 4 d-pushing mechanism; 4d 1-eccentric; 4d 11-eccentric shaft; 4d 2-push rod; 4d 3-driving motor; 4d 31-pulleys; 4d 32-belt;
5-circulating a material returning device; 5 a-vertical screw conveyor; 5a 1-a feed line; 5a 2-a discharge pipeline; 5 b-stirring mechanism; 5b 1-rotating rod; 5b 11-horizontal plate; 5b 12-inclined plate; 5b 2-stirring motor.
Detailed Description
The application will be further described in detail with reference to the drawings and the detailed description below, in order to further understand the features and technical means of the application and the specific objects and functions achieved.
As shown in fig. 1-10, the present application provides:
the utility model provides a coarse sand fine sand's circulation screening plant for construction, including setting up screening staving 2 that are used for screening coarse sand and fine sand on support 1, just be located screening staving 2's bottom still be equipped with one and be used for classifying coarse sand and fine sand's receipts workbin 3 on the support 1, screening staving 2 comprises interior bucket 2a and outer bucket 2b, outer bucket 2b is established on interior bucket 2a with the same axle sleeve and interior bucket 2a and outer bucket 2b are all fixed on support 1, form between outer bucket 2b and the interior bucket 2a and supply coarse sand fine sand's screening cavity 2c, the perisporium upper surface of outer bucket 2b is equipped with throw material funnel 2b1, fine sand screening mouth 2b2 and coarse sand screening mouth 2b3 have still been seted up respectively to the perisporium lower surface of outer bucket 2b, fine sand screening mouth 2b2 and coarse sand screening mouth 2b3 department still is equipped with and is used for screening out vibration screening device 4 of fine sand and coarse sand, and still be equipped with one and be used for leading coarse sand to the interior bucket 2a to guide into and return to the cavity 5 of circulation device from interior bucket 2a to interior cavity 2c between interior workbin 3.
Based on the above embodiments, the technical problem to be solved by the present application is how to avoid the situation that fine sand is mixed in coarse sand and is not easy to be screened out during the screening process of coarse sand and fine sand. Therefore, the coarse sand and fine sand to be screened are poured into the feeding hopper 2b1, the coarse sand Sha Xisha slides down along the peripheral wall of the inner barrel 2a along with the coarse sand and fine sand entering the screening cavity 2c, the coarse sand and fine sand slide down onto the vibrating screening device 4, a large amount of fine sand is discharged into the material collecting box 3 through the fine sand screening opening 2b2 due to the effect of the vibrating screening device 4, coarse sand is discharged into the material collecting box 3 from the coarse sand screening opening 2b3, the fine sand in the material collecting box 3 is guided into the inner barrel 2a by the recycling device 5 due to the fact that fine sand is mixed into the coarse sand, the coarse sand and the mixed fine sand are stirred in the inner barrel 2a under the effect of the recycling device 5, and finally the coarse sand is returned into the screening cavity 2c for screening.
Further, as shown in fig. 4, 6 and 7:
the vibration screening device 4 comprises an arc screening plate 4a arranged at the fine sand screening opening 2b2, the arc screening plate 4a is matched with the fine sand screening opening 2b2 in shape, two ends of the arc screening plate 4a are connected to the outer barrel 2b through vibration connectors 4b, an arc pushing plate 4c used for promoting the arc screening plate 4a to vibrate is further arranged inside the outer barrel 2b and located on the lower surface of the peripheral wall of the outer barrel 2b, the arc pushing plate 4c can swing back and forth along the inner wall of the outer barrel 2b towards the direction of the arc screening plate 4a, and a pushing mechanism 4d used for driving the arc pushing plate 4c to move is further arranged on the outer side of the outer barrel 2 b.
Based on the above embodiment, the technical problem to be solved by the application is how to screen coarse sand and fine sand by the vibration screening mechanism. Therefore, the application screens coarse sand and fine sand through the arc screening plate 4a, when the coarse sand and fine sand slide on the arc screening plate 4a, the pushing mechanism 4d pushes the arc pushing plate 4c to do reciprocating cyclic swing, the arc pushing plate 4c pushes the arc screening plate 4a, and as the arc screening plate 4a is connected to the outer barrel 2b through the vibration connecting piece 4b, the arc screening plate 4a continuously vibrates, the coarse sand and the fine sand are screened under the vibration of the arc screening plate 4a, the fine sand falls into the material receiving box 3 from the fine sand screening port 2b2 through the arc screening plate 4a, and as the arc pushing plate 4c continuously swings, the coarse sand screening port 2b3 is intermittently opened, and the coarse sand falls into the material receiving box 3 along the coarse sand screening port 2b 3.
Further, as shown in fig. 5:
the vibration connecting piece 4b is specifically a vibration spring 4b1, steps are arranged at the position of the fine sand screening opening 2b2 of the outer barrel 2b, two ends of the vibration spring 4b1 are respectively fixed on the steps and the surface of the arc screening plate 4a, two ends of the arc screening plate 4a are also connected with an elastic strip 4b2, and the free end of each elastic strip 4b2 is also connected to the steps of the outer barrel 2 b.
Based on the above-described embodiment, the technical problem to be solved by the present application is how to avoid the situation that coarse sand and fine sand fall out directly from the fine sand screening opening 2b2 when the arc screening plate 4a vibrates. Therefore, by arranging the elastic strips 4b2 at the two ends of the arc screening plate 4a, when the arc screening plate 4a vibrates under the action of the vibration spring 4b1 through the pushing of the arc pushing plate 4c, the two elastic strips 4b2 deform along with the vibration spring, the two elastic strips 4b2 seal the gap between the fine sand screening opening 2b2 and the arc screening plate 4a, coarse sand and fine sand cannot flow out directly through the gap, and the coarse sand and the fine sand smoothly fall on the arc screening plate 4a to normally carry out screening work.
Further, as shown in fig. 5 and 9:
the two ends of the arc screening plate 4a are respectively provided with a slope 4a1, one end, close to the arc screening plate 4a, of the arc pushing plate 4c is also provided with a slope 4a1 matched with the end of the arc screening plate 4a, an extension rod 4c1 outwards extends through the outer barrel 2b on the outer wall of the arc pushing plate 4c, a strip-shaped opening for the extension rod 4c1 to move is formed in the peripheral wall of the outer barrel 2b, and the extension rod 4c1 is connected with the pushing mechanism 4d through a connecting rod 4c 2.
Based on the above embodiment, when the pushing mechanism 4d pushes the arc pushing plate 4c, the arc pushing plate 4c swings along the inner wall of the outer tub 2b toward the direction of the arc screening plate 4a, and as the end of the arc pushing plate 4c is engaged with the end slope 4a1 of the arc screening plate 4a, the arc pushing plate 4c pushes down the arc screening plate 4a along the end slope 4a1 of the arc screening plate 4a as the arc pushing plate 4c pushes down the arc screening plate 4a, so that the arc screening plate 4a performs the vibration screening work on the coarse sand and the fine sand under the action of the vibration spring 4b 1.
Further, as shown in fig. 6, 7 and 10:
the pushing mechanism 4d comprises an eccentric wheel 4d1 which is rotatably arranged on the outer wall of the material receiving box body 3, a push rod 4d2 is further connected between an eccentric shaft 4d11 of the eccentric wheel 4d1 and the connecting rod 4c2, two ends of the push rod 4d2 are respectively and axially connected to the eccentric shaft 4d11 and the connecting rod 4c2, a driving motor 4d3 which is used for driving the eccentric wheel 4d1 to rotate is further arranged on the outer wall of the material receiving box body 3, and the driving motor 4d3 is in driving connection with the eccentric wheel 4d1 through a belt wheel 4d31 and a belt 4d 32.
Based on the above embodiment, the technical problem to be solved by the present application is how the pushing mechanism 4d drives the arc pushing plate 4c to swing. Therefore, the eccentric wheel 4d1 is driven by the driving motor 4d3, the driving motor 4d3 drives the eccentric wheel 4d1 to rotate under the connection of the belt wheel 4d31 and the belt 4d32, and after the eccentric wheel 4d1 rotates, the push rod 4d2 on the eccentric shaft 4d11 pushes and pulls the connecting rod 4c2 on the arc push plate 4c back and forth along with the eccentric wheel, so that the arc push plate 4c swings.
Further, as shown in fig. 4:
the box opening of the material receiving box body 3 is matched with the peripheral wall of the outer barrel 2b, the fine sand screening opening 2b2 and the coarse sand screening opening 2b3 are both positioned in the material receiving box body 3, a partition plate 3a is arranged in the material receiving box body 3, the interior of the material receiving box body 3 is divided into a fine sand storage space 3b and a coarse sand storage space 3c through the partition plate 3a, the fine sand storage space 3b is communicated with the fine sand screening opening 2b2, the coarse sand storage space 3c is communicated with the coarse sand screening opening 2b3, and a fine sand discharging hopper 3d and a coarse sand discharging hopper 3e which are communicated with the fine sand storage space 3b and the coarse sand storage space 3c are respectively arranged at the bottom of the material receiving box body 3.
Based on the above embodiments, the technical problem to be solved by the present application is how to sort and store fine sand and coarse sand in the material receiving box 3. Therefore, the space in the material receiving box body 3 is divided into the fine sand storage space 3b and the coarse sand storage space 3c by the arrangement of the partition plate 3a in the material receiving box body 3, fine sand directly falls into the fine sand storage space 3b after passing through the fine sand screening opening 2b2, if a worker needs to use, the fine sand is led out through the fine sand discharging hopper 3d, coarse sand directly falls into the coarse sand storage space 3c through the coarse sand screening opening 2b3, and coarse sand enters the recycling device 5 along the coarse sand discharging hopper 3e.
Further, as shown in fig. 4 and 10:
the circulation feed back device 5 comprises a vertical screw conveyor 5a arranged on the bracket 1 and positioned beside the screening barrel body 2 and a stirring mechanism 5b arranged in the inner barrel 2a, a circulation discharge port 2a1 communicated with the screening cavity 2c is formed in a position, close to the feeding hopper 2b1, of the peripheral wall of the inner barrel 2a, a communication pipeline 2a2 is further arranged in a position, far away from the circulation discharge port 2a1, of the peripheral wall of the inner barrel 2a, the communication pipeline 2a2 extends outwards through the outer barrel 2b, the lower half part of the vertical screw conveyor 5a is communicated with the coarse sand discharge hopper 3e through a feed pipeline 5a1, and the upper half part of the vertical screw conveyor 5a is communicated with the communication pipeline 2a2 through a discharge pipeline 5a 2.
Based on the above described embodiments, the technical problem the present application is intended to solve is how coarse sand can be re-screened by means of the circulation feed-back device 5. For this purpose, the application conveys coarse sand through the vertical screw conveyor 5a, after the coarse sand slides out from the coarse sand screening opening 2b3, the coarse sand slides into the feeding pipeline 5a1 along the coarse sand discharging hopper 3e, the coarse sand enters the vertical screw conveyor 5a, the vertical screw conveyor 5a is started, the coarse sand is conveyed upwards until the coarse sand enters the inner barrel 2a through the discharging pipeline 5a2, the coarse sand and the fine sand mixed therein are stirred and separated along with the stirring of the coarse sand by the stirring mechanism 5b, and the coarse sand moves along with the stirring mechanism 5b towards the circulating discharging opening 2a1 of the inner barrel 2a, and the coarse sand falls into the screening chamber 2c again through the circulating discharging opening 2a1 for screening treatment until the coarse sand and the fine sand are completely separated.
Further, as shown in fig. 4 and 7:
the stirring mechanism 5b comprises a rotating rod 5b1 which is coaxially and rotatably arranged on the inner barrel 2a, a stirring motor 5b2 which is used for driving the rotating rod 5b1 to rotate is arranged on the bracket 1, four horizontal plates 5b11 are uniformly distributed on the rod wall of the rotating rod 5b1 along the circumferential direction of the rotating rod, and gaps are reserved between the end part of each horizontal plate 5b11 and the inner wall of the inner barrel 2 a.
Based on the above embodiment, when coarse sand enters the inner tub 2a, the stirring motor 5b2 drives the rotating rod 5b1, and as the rotating rod 5b1 rotates, the horizontal plate 5b11 on the rotating rod 5b1 stirs the coarse sand, and the rotating rod 5b1 rotates clockwise, so that the coarse sand is stirred toward the circulation outlet 2a 1.
Further, as shown in fig. 4 and 7:
the end of each horizontal plate 5b11 is obliquely provided with an inclined plate 5b12, the inclined direction of each inclined plate 5b12 can face the circulation outlet 2a1, and the end of each inclined plate 5b12 is attached to the inner wall of the inner tub 2 a.
Based on the above embodiment, the technical problem to be solved by the present application is how to guide the coarse sand toward the circulation outlet 2a1 during the course of stirring the coarse sand. Therefore, by arranging the inclined plate 5b12 on the horizontal plate 5b11, coarse sand can slide along the inclined plane of the inclined plate 5b12 towards the circulating discharge port 2a1, and as a gap is reserved between the end part of the horizontal plate 5b11 and the inner wall of the inner barrel 2a, the coarse sand is pushed by the inclined plate 5b12 until the coarse sand is pushed into the screening cavity 2c by the circulating discharge port 2a1, and finally, the coarse sand is subjected to circulating screening treatment.
Further, as shown in fig. 4:
a springboard 2d used for preventing coarse sand and fine sand from falling into the inner barrel 2a from the circulating discharge port 2a1 when the coarse sand and fine sand are thrown is arranged in the screening cavity 2c and between the feeding hopper 2b1 and the circulating discharge port 2a1, two ends of the springboard 2d are respectively fixedly connected to the inner wall of the outer barrel 2b and the outer wall of the inner barrel 2a, and a sliding gap for the coarse sand and fine sand to slide is reserved between the springboard 2d and the inner wall of the outer barrel 2 b.
Based on the above embodiment, the technical problem to be solved by the present application is how to avoid the situation that coarse sand and fine sand directly slide into the inner barrel 2a through the circulating discharge port 2a1 when being thrown in. Therefore, by arranging the springboard 2d, when coarse sand and fine sand are thrown in, the coarse sand and the fine sand can slide off a distance away from the circulating discharge port 2a1, and the coarse sand and the fine sand can slide down along the inner wall of the outer barrel 2b and cannot slide into the circulating discharge port 2a1 of the inner barrel 2 a.
According to the application, through the cooperation between the vibration screening device 4 and the recycling device 5, the condition that fine sand is mixed in coarse sand and is not easy to screen out is avoided, the screening of the coarse sand and the fine sand is ensured to be more accurate, the screening effect of the coarse sand and the fine sand is improved, and the recycling screening of the coarse sand and the fine sand is realized.
The foregoing examples merely illustrate one or more embodiments of the application, which are described in greater detail and are not to be construed as limiting the scope of the application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.
Claims (6)
1. The utility model provides a coarse sand and fine sand's circulation screening plant for construction, including setting up screening staving (2) that are used for screening coarse sand and fine sand on support (1), and be located screening staving (2) bottom still be equipped with one and be used for classifying coarse sand and fine sand's receipts workbin (3), characterized in that, screening staving (2) comprises inner barrel (2 a) and outer barrel (2 b), outer barrel (2 b) coaxial sleeve is established on inner barrel (2 a) and outer barrel (2 b) are all fixed on support (1), form screening cavity (2 c) that supplies coarse sand fine sand to flow between outer barrel (2 b) and inner barrel (2 a), the perisporium upper surface of outer barrel (2 b) still has been seted up fine sand screening mouth (2 b 2) and coarse sand screening mouth (2 b 3) respectively, sand screening mouth (2 b) and coarse sand screening mouth (2 b) are equipped with respectively and are used for retrieving coarse sand screening cavity (2 c) and are used for retrieving coarse sand cavity (2 c) from inside to be equipped with in order to circulate and take over coarse sand cavity (2 a) to be used for screening device (2 c) from inside (2 a);
the vibration screening device (4) comprises an arc screening plate (4 a) arranged at the fine sand screening opening (2 b 2), the arc screening plate (4 a) is matched with the fine sand screening opening (2 b 2) in shape, two ends of the arc screening plate (4 a) are connected to the outer barrel (2 b) through a vibration connecting piece (4 b), an arc pushing plate (4 c) used for promoting the arc screening plate (4 a) to vibrate is further arranged inside the outer barrel (2 b) and positioned on the lower surface of the peripheral wall of the outer barrel (2 b), the arc pushing plate (4 c) can swing back and forth along the inner wall of the outer barrel (2 b) towards the direction of the arc screening plate (4 a), and a pushing mechanism (4 d) used for driving the arc pushing plate (4 c) to move is further arranged on the outer side of the outer barrel (2 b);
the vibration connecting piece (4 b) is specifically a vibration spring (4 b 1), steps are arranged at the fine sand screening opening (2 b 2) of the outer barrel (2 b), two ends of the vibration spring (4 b 1) are respectively fixed on the steps and the surface of the arc screening plate (4 a), two ends of the arc screening plate (4 a) are also connected with an elastic strip (4 b 2), and the free end of each elastic strip (4 b 2) is also connected to the steps of the outer barrel (2 b);
the two ends of the arc screening plate (4 a) are provided with slopes (4 a 1), one end of the arc push plate (4 c) close to the arc screening plate (4 a) is also provided with a slope (4 a 1) matched with the end of the arc push plate, the outer wall of the arc push plate (4 c) is outwards extended with an extension rod (4 c 1) through an outer barrel (2 b), the peripheral wall of the outer barrel (2 b) is provided with a strip-shaped opening for the extension rod (4 c 1) to move, and the extension rod (4 c 1) is connected with a pushing mechanism (4 d) through a connecting rod (4 c 2);
the pushing mechanism (4 d) comprises an eccentric wheel (4 d 1) which is rotatably arranged on the outer wall of the material receiving box body (3), a push rod (4 d 2) is further connected between an eccentric shaft (4 d 11) of the eccentric wheel (4 d 1) and the connecting rod (4 c 2), two ends of the push rod (4 d 2) are respectively connected onto the eccentric shaft (4 d 11) and the connecting rod (4 c 2) in a shaft mode, a driving motor (4 d 3) which is used for driving the eccentric wheel (4 d 1) to rotate is further arranged on the outer wall of the material receiving box body (3), and the driving motor (4 d 3) is connected with the eccentric wheel (4 d 1) in a driving mode through a belt wheel (4 d 31) and a belt (4 d 32).
2. The coarse sand and fine sand circulating screening device for construction according to claim 1, characterized in that the box opening of the material receiving box body (3) is matched with the outer peripheral wall of the outer barrel (2 b), the fine sand screening opening (2 b 2) and the coarse sand screening opening (2 b 3) are both positioned in the material receiving box body (3), a partition plate (3 a) is arranged in the material receiving box body (3), the interior of the material receiving box body (3) is divided into a fine sand storage space (3 b) and a coarse sand storage space (3 c) through the partition plate (3 a), the fine sand storage space (3 b) is communicated with the fine sand screening opening (2 b 2), the coarse sand storage space (3 c) is communicated with the coarse sand screening opening (2 b 3), and a fine sand outlet (3 d) communicated with the fine sand storage space (3 b) and a coarse sand outlet hopper (3 e) communicated with the coarse sand storage space (3 c) are further arranged at the bottom of the material receiving box body (3).
3. The circulating screening device for coarse sand and fine sand for construction according to claim 1, wherein the circulating feed back device (5) comprises a vertical screw conveyor (5 a) arranged on the support (1) and located beside the screening barrel body (2) and a stirring mechanism (5 b) arranged inside the inner barrel (2 a), a circulating discharge port (2 a 1) communicated with the screening cavity (2 c) is formed in a position, close to the feeding hopper (2 b 1), of the peripheral wall of the inner barrel (2 a), a communicating pipeline (2 a 2) is further arranged in a position, far away from the circulating discharge port (2 a 1), of the peripheral wall of the inner barrel (2 a), the communicating pipeline (2 a 2) extends outwards through the outer barrel (2 b), the lower half part of the vertical screw conveyor (5 a) is communicated with the coarse sand discharge hopper (3 e) through a feeding pipeline (5 a 1), and the upper half part of the vertical screw conveyor (5 a) is communicated with the communicating pipeline (2 a 2) through the communicating pipeline (5 a 2).
4. A coarse sand and fine sand circulating and screening device for building construction according to claim 3, characterized in that the stirring mechanism (5 b) comprises a rotating rod (5 b 1) which is coaxial and rotatably arranged on the inner barrel (2 a), the bracket (1) is provided with a stirring motor (5 b 2) for driving the rotating rod (5 b 1) to rotate, four horizontal plates (5 b 11) are uniformly distributed on the rod wall of the rotating rod (5 b 1) along the circumferential direction of the rotating rod, and gaps are reserved between the end part of each horizontal plate (5 b 11) and the inner wall of the inner barrel (2 a).
5. The device for circulating and screening coarse sand and fine sand for construction according to claim 4, wherein the end part of each horizontal plate (5 b 11) is obliquely provided with an inclined plate (5 b 12), the inclined direction of each inclined plate (5 b 12) can face the circulating discharge port (2 a 1), and the end part of each inclined plate (5 b 12) is attached to the inner wall of the inner barrel (2 a).
6. The coarse sand and fine sand circulating screening device for building construction according to claim 1, wherein a springboard (2 d) for preventing coarse sand and fine sand from falling into the inner barrel (2 a) from the circulating discharge port (2 a 1) when the coarse sand and fine sand are thrown is arranged between the feeding hopper (2 b 1) and the circulating discharge port (2 a 1) in the screening chamber (2 c), two ends of the springboard (2 d) are fixedly connected to the inner wall of the outer barrel (2 b) and the outer wall of the inner barrel (2 a) respectively, and a sliding gap for allowing the coarse sand and fine sand to slide is reserved between the springboard (2 d) and the inner wall of the outer barrel (2 b).
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| CN202111549721.4A CN114433482B (en) | 2021-12-17 | 2021-12-17 | Coarse sand and fine sand circulating screening device for building construction |
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| CN202111549721.4A CN114433482B (en) | 2021-12-17 | 2021-12-17 | Coarse sand and fine sand circulating screening device for building construction |
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