CN212468730U

CN212468730U - Noise reduction environment-friendly sand screening machine for earthwork

Info

Publication number: CN212468730U
Application number: CN202021038133.5U
Authority: CN
Inventors: 罗建斌; 彭若宏; 钟凤长; 司鹏; 周生荣; 陈忠琦; 温为东; 陈金波; 彭剑
Original assignee: China Merchants Harbours Group Co ltd
Current assignee: China Merchants Harbours Group Co ltd
Priority date: 2020-06-05
Filing date: 2020-06-05
Publication date: 2021-02-05
Anticipated expiration: 2030-06-05

Abstract

The utility model relates to an earthwork is noise reduction environment-friendly screening sand machine for engineering, it includes the feeder hopper, and the feeder hopper is provided with the discharge gate, and the feeder hopper is provided with the preseparation mechanism that is located the discharge gate top and is used for the dispersion sand, and preseparation mechanism includes the mount, and the mount is provided with the separation strip that shelters from the discharge gate more than two, interval distribution between each separation strip, forms the feeding clearance that supplies the sand to wear to establish between the adjacent separation strip. The fixing frame supports each separating strip, so that the separating strips are positioned above the discharge port. When the scraper vehicle pours sand into the feed hopper, the sand falls under the influence of gravity to the surface of the separation strip and moves along the surface of the separation strip through the feed gap. In this way, the separating strip can pre-separate the sand before it enters the outlet, making it more loose and sifting and reducing clumpy sand. The utility model discloses have the effect that improves screening sand efficiency.

Description

Noise reduction environment-friendly sand screening machine for earthwork

Technical Field

The utility model belongs to the technical field of the technique of screening sand machine and specifically relates to a noise reduction environment-friendly screening sand machine for earth and stone engineering is related to.

Background

In the earth and rockfill engineering such as terrace filling, road bed filling and foundation pit backfilling, sand can be used as the raw materials, because sand particles are different in size, a sand screening machine is usually used for screening the sand particles before use, and the sand is applied to a suitable engineering according to the particle size of the sand. The sand screening machine commonly used in engineering is a vibration type sand screening machine, sand is screened by the equipment through a screen, and the screen is continuously vibrated in the sand screening process, so that the sand collides with the screen, and the sand screening efficiency is improved.

In the prior art, CN207126791U discloses an anti-stacking roller type sand screening machine, which comprises a frame body, a feed hopper disposed on the upper portion of the frame body, a conveying belt disposed on the lower portion of the frame body, and a roller screen disposed between the feed hopper and the conveying belt. The feed hopper is provided with a discharge port opposite to the drum screen. The inside setting of drum sieve is the screen cloth of tube-shape and the axis of rotation of being connected with screen cloth coaxial, and the screen cloth is articulated through axis of rotation and support body, and the screen cloth sets up with the incline direction. The frame body is provided with a rotating motor for driving the screen mesh to rotate. In the course of the work, rotating motor drive screen cloth and taking place to rotate, after the user pours sand into the feeder hopper, sand falls out and gets into the inside of screen cloth from the material mouth. As the screen rotates, fine sand will penetrate the screen and fall onto the conveyor belt to be transported away, while large crushed stones that do not pass through the screen will be transported away from the end of the screen remote from the feed hopper.

Compared with a common vibration type sand screening machine, the drum-type sand screening machine has the advantages that the mode of rotating the screen cloth replaces the mode of vibrating the screen cloth, so that the collision between sand and the screen cloth is relieved, and the effects of noise reduction and environmental protection are achieved while the sand screening work is completed. In engineering construction, the shovel car is generally used for pouring piled sand into the feed hopper, but because the humidity and the viscosity of different sands are different, the viscosity or the humidity of some sands is higher, the shoveling car is easy to accumulate and form blocks, and in the rotating process of the drum-type screen, the formed blocks of sands can roll along the inner wall of the screen and can be directly separated from the screen, so that the sand screening efficiency of the sand screening machine is reduced.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, one of the purposes of the utility model is to provide an earth and stone engineering is with noise reduction environment-friendly screening sand machine, through carrying out preliminary treatment rescreening to the sand, improve screening sand efficiency.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides an earthwork is noise reduction environment-friendly screening sand machine for engineering, includes the feeder hopper, the feeder hopper is provided with the discharge gate, the feeder hopper is provided with and is located the discharge gate top just is used for the preseparation mechanism of dispersion sand, preseparation mechanism includes the mount, the mount is provided with and shelters from more than two the parting bead of discharge gate, each interval distribution between the parting bead is adjacent form the feeding clearance that supplies sand to wear to establish between the parting bead.

Through adopting above-mentioned technical scheme, each separation strip is supported to the mount, makes the separation strip be located the top of discharge gate. When the scraper vehicle pours sand into the feed hopper, the sand falls under the influence of gravity to the surface of the separation strip and moves along the surface of the separation strip through the feed gap. In this way, the separating strip can pre-separate the sand before the sand enters the discharge port, so that the sand is looser and is screened, and the block-shaped sand is reduced, thereby improving the sand screening efficiency of the sand screening machine.

The present invention may be further configured in a preferred embodiment as: the feeder hopper inner wall sets up and is used for supporting the support frame of mount, the support frame with mount sliding connection, the feeder hopper is provided with and is used for the drive mount reciprocating motion's drive assembly.

Through adopting above-mentioned technical scheme, the mode that drive assembly accessible removed the mount drives each separation strip and carries out reciprocating motion, makes the separation strip can break up the sand ceaselessly, makes the sand more loose be convenient for sieve.

The present invention may be further configured in a preferred embodiment as: the drive assembly drives including through the swing mode the actuating lever that the mount removed, drive through the rotation mode the actuating lever wobbling rotates the piece and is used for driving rotate a pivoted power piece, the actuating lever with the mount is articulated, the actuating lever with rotate articulated and eccentric settings of piece and be in rotate on the piece.

Through adopting above-mentioned technical scheme, order about when power spare and rotate the back, rotate the piece and drive and remove the actuating lever and swing, drive the mount and remove during the actuating lever swing, along with rotating the incessant rotation of piece, reciprocating motion is realized to the mount.

The present invention may be further configured in a preferred embodiment as: the quantity of the fixing frames is two, the fixing frames are oppositely arranged, the separating strips are arranged in a staggered mode to enable the separating strips to correspond to the feeding gaps on the adjacent fixing frames one by one, the volume of the feeding gaps is larger than that of the separating strips, and the moving directions of the two fixing frames are opposite.

Through adopting above-mentioned technical scheme, the mount sets up in the feeder hopper relatively, and two mounts are when moving, and each separation strip carries out interlock and separation ceaselessly to press from both sides the cubic sand that looses through the feeding clearance, further improve sieve husky efficiency.

The present invention may be further configured in a preferred embodiment as: the distance between the two sides of the separation strip is gradually reduced in a mode of being far away from the fixing frame, so that the two sides of the separation strip form abdicating surfaces respectively.

Through adopting above-mentioned technical scheme, the face of stepping down can increase the area that the feeding clearance transported mount one end opening part, is blocked when preventing the removal of separation strip.

The present invention may be further configured in a preferred embodiment as: the distance between the two sides of the separation strip gradually decreases towards the upward direction, so that the upper part of the separation strip forms a shunting part.

Through adopting above-mentioned technical scheme, when the reposition of redundant personnel portion is descended to the sand, can make the sand be difficult to pile up the upper surface at the separation strip along reposition of redundant personnel portion entering feeding gap in. On the other hand, can increase the area of feed gap top opening part, prevent that large-scale rubble card from between adjacent separation strip.

The present invention may be further configured in a preferred embodiment as: the separation strip is inclined downwards in a direction away from the fixed frame.

Through adopting above-mentioned technical scheme, the separation strip is the slope setting, makes the sand can remove along the separation strip and gets into the discharge gate for the speed of sand through the discharge gate. On the other hand, a triangular gap with a downward tip is formed between the two fixing frames, and the sand dust overflow amount of the feed hopper can be reduced in the sand scattering process.

The present invention may be further configured in a preferred embodiment as: the two sides of the fixing frame are respectively hinged with more than two idler wheels, the supporting frame comprises a supporting block for supporting the idler wheels and a limiting block for limiting the idler wheels, and a limiting gap for the idler wheels to roll is formed between the limiting block and the supporting block.

Through adopting above-mentioned technical scheme, form between supporting shoe and the stopper and supply the rolling spacing clearance of gyro wheel, when the mount removed, the gyro wheel rolled in spacing clearance, made the mount steady movement and can not accomplish the upset, reduced the wear and tear between mount removal and supporting shoe or the stopper, promoted the durability of screening sand machine.

The present invention may be further configured in a preferred embodiment as: and reinforcing ribs are arranged between the supporting blocks and the inner wall of the feed hopper.

Through adopting above-mentioned technical scheme, the strengthening rib consolidates the supporting shoe, makes the mount more stable.

To sum up, the utility model discloses a following at least one useful technological effect:

1. through the mode, the separation strips can pre-separate the sand before the sand enters the discharge hole, so that the sand is looser, the block-shaped sand is reduced, and the sand screening efficiency of the sand screening machine is improved

2. When the two fixed frames move, the separating strips are continuously occluded and separated, so that the blocky sand passing through the feeding gap is clamped and dispersed, and the sand screening efficiency is further improved;

3. in the process of scattering sand, the sand dust overflow amount of the feed hopper is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a noise-reducing environment-friendly sand screening machine for earthwork.

FIG. 2 is a schematic view of the feed hopper and preseparation mechanism.

Fig. 3 is a schematic view of the structure of the fixing frame and the separating strip.

FIG. 4 is a schematic view of another configuration of the feed hopper and preseparation mechanism.

Fig. 5 is a partially enlarged schematic view of a portion a in fig. 1.

In the figure, 1, a frame; 2. a feed hopper; 21. a feed cavity; 22. a support plate; 23. a discharge port; 3. a drum screen; 31. rotating the motor; 4. a conveyor belt; 5. a pre-separation mechanism; 6. a fixed mount; 61. a roller; 7. separating the strips; 71. a feed gap; 72. a abdication surface; 73. a flow dividing section; 8. a drive assembly; 81. a drive rod; 811. a first connecting shaft; 812. a second connecting shaft; 82. a rotating member; 83. a power member; 9. a support frame; 91. a support block; 911. reinforcing ribs; 92. a limiting block; 93. and limiting the gap.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The utility model discloses a noise reduction environment-friendly screening sand machine for earth and stone engineering, through the mode noise abatement that adopts drum-type sieve net to sieve the screen sand, environmental protection more, and in order to improve the screening sand efficiency, the screening sand machine sets up the mechanism that carries out the preliminary treatment to the sand. Referring to fig. 1, the sand screening machine includes a frame 1, a feed hopper 2 fixed at an upper portion of the frame 1, a drum screen 3 rotatably connected to a middle portion of the frame 1, and a conveyor belt 4 fixed at a lower portion of the frame 1. A pre-separation mechanism 5 is arranged in the feed hopper 2. The drum screen 3 inclines downwards in a direction away from the feed hopper 2, the discharge port 23 of the feed hopper 2 is communicated with the drum screen 3, and the frame 1 is also fixed with a rotating motor 31 for driving the drum screen 3 to rotate. In an operating state, a user can shovel sand into the feed hopper 2 through the earth-shoveling vehicle, and the pre-separating mechanism 5 can break up the sand entering the feed hopper 2, so that the sand passing through the feed port is looser. The sand from the discharge port 23 enters the drum screen 3 to be screened, the sand smaller than the aperture of the drum screen 3 passes through the drum screen 3 and falls on the conveying belt 4 to be conveyed away, and the screen which does not pass through the drum screen 3 is discharged out of the drum screen 3 along the inner wall of the drum screen 3.

Referring to fig. 2, the inner middle portion of the feeding hopper 2 forms a feeding chamber 21. The pre-separation mechanism 5 comprises two groups of fixed frames 6, a supporting frame 9 used for supporting the fixed frames 6 is arranged in the feeding cavity 21, and the supporting frame 9 is connected with the fixed frames 6 in a sliding mode and has a limiting effect on horizontal sliding of the fixed frames 6. Two groups of driving components 8 used for driving the two fixing frames 6 to move are arranged on the feeding hopper 2, and the driving components 8 can drive the corresponding fixing frames 6 to move along the horizontal direction.

Referring to fig. 1 and 2, the two fixing frames 6 are respectively disposed on two opposite sides of the feeding cavity 21, so that the two fixing frames 6 are symmetrically disposed about the axis of the feeding cavity 21, and in order to reduce the shielding of the fixing frames 6 on the cavity opening of the feeding cavity 21, the fixing frames 6 are U-shaped and the openings of the two fixing frames 6 are disposed oppositely. One side welding that feed chamber 21 inner wall was kept away from to mount 6 has a plurality of parting bead 7, interval distribution between the parting bead 7, make and form feeding clearance 71 between the adjacent parting bead 7, the sand that descends on the parting bead 7 can be broken up and passes feeding clearance 71 and get into discharge gate 23, and when mount 6 removed, two mounts 6 drive each parting bead 7 respectively and remove, press from both sides the cubic sand that loosens in feeding clearance 71, thereby make the sand more loose, be convenient for follow-up screening.

Referring to fig. 2 and 3, in order to complete the occlusion and separation between the separating strips 7 on the two fixing frames 6, the separating strips 7 on the two fixing frames 6 are arranged in a staggered manner, so that the separating strips 7 on the same fixing frame 6 correspond to the feeding gaps 71 on the other fixing frame 6 one by one, and the volume of the feeding gap 71 is larger than that of the separating strip 7, so that a space is always reserved between the feeding gap 71 and the adjacent separating strip 7. When one fixing frame 6 moves in the direction far away from the cavity wall of the feeding cavity 21, the other fixing frame 6 moves in the opposite direction, so that each separation strip 7 gradually enters the corresponding feeding gap 71, and the space for sand to penetrate through in the feeding gap 71 is reduced, so that sand is dispersed; when one of the fixing frames 6 moves in a direction approaching the cavity wall of the feeding cavity 21, the other fixing frame 6 moves in an opposite direction, so that each separating strip 7 gradually separates from the corresponding feeding gap 71, and the space for sand to penetrate through in the feeding gap 71 is enlarged, so that sand or gravel with larger particle size can penetrate through.

Referring to fig. 3, in order to prevent each separation strip 7 from being caught by the corresponding feed gap 71 when moving, the distance between both sides of the separation strip 7 is gradually decreased in a direction away from the holder 6, and relief surfaces 72 that are contracted from each other in a direction away from the holder 6 are formed on both sides of the separation strip 7. In this way, the feeding gap 71 is trapezoidal and the area of one end far away from the fixing frame 6 is larger than that of the other end, so that the separation strip 7 can enter and exit conveniently.

Referring to fig. 2 and 3, in order to prevent sand from being accumulated on the surface of the separation strip 7 to reduce the sand discharging efficiency of the discharge hole 23, the separation strip 7 is inclined downward in a direction away from the fixed frame 6, and the upper surface of the separation strip 7 is provided with a flow dividing portion 73. The diversion portion 73 is formed by gradually decreasing the distance between the two sides of the separation bar 7 upward, so that the longitudinal section of the separation bar 7 is generally triangular and the tip end thereof is upward. When the sand falls to the split 73, it may move along the surface of the split 73 into the adjacent feed gap 71. On the other hand, the downward inclination of the separating strips 7 can ensure that a triangular gap with a downward tip is integrally formed among the separating strips 7, so that the amount of sand and dust overflowing the feed hopper 2 when the separating strips 7 move is reduced, and the environment is protected.

Referring to fig. 1 and 2, two sets of driving assemblies 8 are respectively disposed at adjacent sides of the two fixing frames 6, so that the two driving assemblies 8 are distributed in a central symmetry manner around the central axis of the feeding cavity 21.

Referring to fig. 2, each set of driving components 8 includes a driving rod 81, a rotating member 82 and a power member 83. In the working process, the power part 83 drives the rotating part 82 to rotate, the rotating part 82 can drive the driving rod 81 to swing, and the driving rod 81 drives the fixed frame 6 to reciprocate along the horizontal direction in a swinging mode. The driving rod 81 and the rotating member 82 are located inside the feeding cavity 21, and the power member 83 is located outside the feeding cavity 21. The power member 83 is a motor. The outer side of the feed hopper 2 is bolted with a supporting plate 22. The power member 83 is bolted to the support plate 22, and its output shaft is inserted into the feed hopper 2 and welded to the rotating member 82. The rotary member 82 is a cam.

Referring to fig. 4, one end of the driving rod 81 is hinged to a surface of the rotating member 82 away from the wall of the feeding chamber 21 via a first connecting shaft 811, and the first connecting shaft 811 is eccentrically disposed on the power member 83. One end of the driving rod 81 away from the rotating member 82 is hinged to the fixed frame 6 through a second connecting shaft 812.

Referring to fig. 4, since the distance between the first connecting shaft 811 and the second connecting shaft 812 is constant, the first connecting shaft 811 moves circularly around the output shaft of the power member 83 as the rotating member 82 rotates, and the second connecting shaft 812 moves back in the horizontal direction, so that the driving rod 81 continuously swings and drives the fixing frame 6 to reciprocate.

Referring to fig. 3 and 4, a support frame 9 is provided on both sides of each fixing frame 6. In order to prevent the fixing frame 6 from turning over during movement, the supporting frame 9 includes a supporting block 91 and a limiting block 92. The supporting block 91 and the limiting block 92 are respectively arranged in the horizontal direction, and the longitudinal section of the supporting block 91 and the longitudinal section of the limiting block 92 are L-shaped. The supporting block 91 and the limiting block 92 are bolted to the wall of the feeding cavity 21, wherein the limiting block 92 is located above the supporting block 91, so that a limiting gap 93 parallel to the horizontal direction is formed between the limiting block 92 and the supporting block 91. Two sides of the fixing frame 6 are respectively hinged with two rollers 61, and each roller 61 is just accommodated in the corresponding limiting gap 93 and is in rolling connection with the supporting block 91 or the limiting block 92. When the driving rod 81 pulls or pushes the fixing frame 6, each roller 61 rolls in the limit gap 93.

Referring to fig. 5, in order to make the movement of the fixing frame 6 more stable, the reinforcing rib 911 is welded on the lower surface of the supporting block 91, and one end of the reinforcing rib 911, which is far away from the supporting block 91, is bolted to the inner wall of the feeding cavity 21, so that a stable triangular supporting structure is formed by the supporting block 91, the reinforcing rib 911 and the inner wall of the feeding cavity 21, and the fixing frame 6 is supported more firmly.

The implementation principle of the embodiment is as follows: the fixing frame 6 supports each separation strip 7 so that the separation strip 7 is positioned above the discharge port 23. When the scraper vehicle pours sand into the feed hopper 2, the sand falls under gravity to the surface of the separation strip 7 and moves along the surface of the separation strip 7 passing through the feed gap 71. In this way, the separation strip 7 can pre-separate the sand before it enters the outlet 23, making the sand more loose and sifted, and reducing the clumpy sand, thus improving the sand sifting efficiency of the sand sifter.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an earth and stone engineering is with noise reduction environment-friendly screening sand machine, includes feeder hopper (2), feeder hopper (2) are provided with discharge gate (23), its characterized in that: the sand-dispersing feeding device is characterized in that a pre-separating mechanism (5) which is located above the discharging port (23) and used for dispersing sand is arranged on the feeding hopper (2), the pre-separating mechanism (5) comprises a fixing frame (6), the fixing frame (6) is provided with more than two separating strips (7) which shield the discharging port (23), the separating strips (7) are distributed at intervals, and feeding gaps (71) for sand to penetrate through are formed between the adjacent separating strips (7).

2. The noise-reducing environment-friendly sand screening machine for earthwork engineering according to claim 1, which is characterized in that: feeder hopper (2) inner wall sets up and is used for supporting support frame (9) of mount (6), support frame (9) with mount (6) sliding connection, feeder hopper (2) are provided with and are used for the drive mount (6) reciprocating motion's drive assembly (8).

3. The noise-reducing environment-friendly sand screening machine for earthwork according to claim 2, which is characterized in that: drive assembly (8) drive including driving through the swing mode actuating lever (81), the mode of rotating that mount (6) removed drive actuating lever (81) wobbling rotate piece (82) and be used for driving rotate piece (82) pivoted power spare (83), actuating lever (81) with mount (6) are articulated, actuating lever (81) with rotate piece (82) articulated and eccentric settings is in rotate on piece (82).

4. The noise-reducing environment-friendly sand screening machine for earthwork according to claim 3, which is characterized in that: the number of the fixing frames (6) is two, the fixing frames are oppositely arranged, the separating strips (7) are arranged in a staggered mode to enable the separating strips (7) to correspond to the feeding gaps (71) on the adjacent fixing frames (6) one by one, the volume of the feeding gaps (71) is larger than that of the separating strips (7), and the moving directions of the two fixing frames (6) are opposite.

5. The noise-reducing environment-friendly sand screening machine for earthwork according to claim 4, which is characterized in that: the distance between the two sides of the separation strip (7) is gradually reduced in a mode of being far away from the fixing frame (6), so that the two sides of the separation strip (7) form yielding surfaces (72) respectively.

6. The noise-reducing environment-friendly sand screening machine for earthwork of claim 5, which is characterized in that: the distance between the two sides of the separating strip (7) gradually forms corners in the upward direction, so that the upper part of the separating strip (7) forms a shunting part (73).

7. The noise-reducing environment-friendly sand screening machine for earthwork of claim 5, which is characterized in that: the separating strip (7) is inclined downwards in a direction away from the fixing frame (6).

8. The noise-reducing environment-friendly sand screening machine for earthwork according to claim 2, which is characterized in that: the two sides of the fixing frame (6) are respectively hinged with more than two idler wheels (61), the supporting frame (9) comprises a supporting block (91) for supporting the idler wheels (61) and a limiting block (92) with a limiting effect on the idler wheels (61), and a limiting gap (93) for the idler wheels (61) to roll is formed between the limiting block (92) and the supporting block (91).

9. The noise-reducing environment-friendly sand screening machine for earthwork of claim 8, which is characterized in that: and a reinforcing rib (911) is arranged between the supporting block (91) and the inner wall of the feeding hopper (2).