CN111450988A

CN111450988A - Washed sand processing production line

Info

Publication number: CN111450988A
Application number: CN202010280772.0A
Authority: CN
Inventors: 冯振
Original assignee: Xiamen Huanjin Construction Waste Recycling Disposal Co ltd
Current assignee: Xiamen Huanjin Construction Waste Recycling Disposal Co ltd
Priority date: 2020-04-10
Filing date: 2020-04-10
Publication date: 2020-07-28

Abstract

The invention relates to the technical field of washed sand preparation, in particular to a washed sand processing production line which comprises a bailing machine, a first dewatering screen, a material guide hopper, a vibrating screen, a round roller screen, a wheel type sand washer and a second dewatering screen which are sequentially arranged from upstream to downstream; a first conveyor belt is arranged at the discharge end of the first dewatering screen, and the tail end of the first conveyor belt in the conveying direction is opposite to the material guide hopper; the vibrating screen is obliquely arranged, a second conveyor belt is arranged below a screen mesh of the vibrating screen, a first material receiving box is arranged at the lower end of the vibrating screen in the oblique direction, and spraying assemblies spraying water towards the vibrating screen are respectively arranged on two sides of the vibrating screen; the round roller screen is arranged at the tail end of the second conveying belt in the conveying direction, a discharge port is arranged below the round roller screen, and the discharge port is opposite to the wheel type sand washer; and a second material receiving box is arranged at the discharge end of the second dewatering screen. The invention has the following effects: less dust is raised in the production process; the obtained washed sand has low mud content and high finished product quality.

Description

Washed sand processing production line

Technical Field

The invention relates to the technical field of washed-out sand preparation, in particular to a washed-out sand processing production line.

Background

The washing sand is the casting raw sand obtained by washing and grading natural silica sand, and the river sand is produced by long-time repeated collision and friction of natural stone under the action of water in a natural state, and can be used for producing iron castings, small and medium-sized steel castings, non-ferrous metal castings, glass, ceramics and other industries.

The existing washed sand production line comprises a guide hopper, a vibrating screen, a sand washer and a dewatering screen which are sequentially connected from upstream to downstream through a conveyor belt, materials are conveyed to the vibrating screen from the guide hopper to remove large particles, sand is washed through the sand washer to remove soil in the sand, and finally the finished product is obtained through dewatering.

The existing production line has the following defects: firstly, the production process has serious dust emission and dust, and is easy to cause environmental pollution; secondly, the obtained washed sand has higher mud content and low finished product quality.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a washed sand processing production line which has the following effects: less dust is raised in the production process; the obtained washed sand has low mud content and high finished product quality.

The above object of the present invention is achieved by the following technical solutions:

a washed sand processing production line comprises a bailing machine, a first dewatering screen, a material guide hopper, a vibrating screen, a round roller screen, a wheel type sand washer and a second dewatering screen which are arranged in sequence from upstream to downstream;

the discharge end of the bailing machine is over against the first dewatering screen, a first conveyor belt is arranged at the discharge end of the first dewatering screen, and the tail end of the first conveyor belt in the conveying direction is over against the material guide hopper;

a discharge port is arranged on the lower end face of the guide hopper and is opposite to the vibrating screen;

the vibrating screen is obliquely arranged, a second conveying belt is arranged below a screen mesh of the vibrating screen, a first material receiving box is arranged at the lower end of the vibrating screen in the oblique direction, and spraying assemblies for spraying water towards the vibrating screen are respectively arranged on two sides of the vibrating screen;

the round roller screen is arranged at the tail end of the second conveying belt in the conveying direction, a discharge port is arranged below the round roller screen, and the discharge port is opposite to the wheel type sand washer;

the second dewatering screen is arranged at the discharge end of the wheel type sand washer, and the discharge end of the second dewatering screen is provided with a second material receiving box.

By adopting the technical scheme, when the production line is used for producing washing sand, raw materials are conveyed to a first dewatering screen through the bailing machine, after the washing sand is dewatered through the first dewatering screen, the raw materials are conveyed to a hopper through a first conveyor belt, then the raw materials drop onto a vibrating screen from a discharge port, large-particle impurities which do not meet requirements are filtered through the vibrating screen, then the filtered sand and stone are conveyed to a round roller screen through a second conveyor belt for secondary filtration, then the sand and stone drop to a wheel type sand washer, the sand and stone are cleaned through the wheel type sand washer, and the cleaned sand and stone are dewatered through a second dewatering screen to obtain a finished product; through setting up spray set, reduce the raise dust, through twice filtration for grit impurity is less when carrying out the washing, thereby makes the grit better when washing through wheeled sand washer washing water washing effect, and then makes the washing back effect better.

The invention is further configured to: the spraying assembly comprises a support frame and a spraying pipe;

the support frame is two vertical steel pipes that set up, shower both ends with support frame fixed connection, the shower just has a plurality of delivery port to the position of shale shaker.

By adopting the technical scheme, the spraying function is realized.

The invention is further configured to: the water outlet of the spray pipe is communicated with a spray head, and the water outlet end of the spray head faces the vibrating screen.

Through adopting above-mentioned technical scheme, through setting up the shower nozzle, spray water with the form of dispersion through the shower nozzle, abundant water resource for it is more abundant even to spray water, improves dustproof effect.

The invention is further configured to: and the tail end of the second conveying belt is provided with a hopper, and the discharge end of the hopper faces to the round roller screen.

Through adopting above-mentioned technical scheme, through setting up the hopper, the grit that comes from the conveying of second conveyer belt easily drops into the round roller sieve through the direction of hopper for the grit is difficult for dropping outside the production line.

The invention is further configured to: and a water inlet pipe for adding water into the hopper is arranged above the hopper.

Through adopting above-mentioned technical scheme, the grit that gets into the round roller screen is through continuous stirring, kneading, collision and friction each other to destroy the steam layer of cladding sand grain, and then detach the impurity that covers the grit surface, make and wash the grit when filtering the grit, make grit and dirt initial segregation.

The invention is further configured to: the three groups of wheel type sand washers are arranged in sequence.

Through adopting above-mentioned technical scheme, grit is through the cubic washing, and the cleaning performance is better to make finally obtained washed-out sand mud content lower, finished product quality is higher.

The invention is further configured to: a backflow pipe is arranged between the second group of wheel type sand washers and the third group of wheel type sand washers, and the backflow pipe comprises a backflow main pipe, a backflow branch pipe, a conical hopper and a water outlet pipe;

one end of the backflow main pipe is communicated with the drainage end of the bailing machine, the other end of the backflow main pipe is forked to form two backflow branch pipes, the backflow branch pipes are communicated with the side wall of the conical hopper, the upper end of the conical hopper is communicated with the water outlet pipe, and the water outlet pipe is communicated to a drainage system.

By adopting the technical scheme, the sand meeting the requirements still remains in the water discharged by the bailing machine, the water in the bailing machine is pumped into the wheel type sand washer through the return pipe, and the sand is screened and washed again through the wheel type sand washer, so that the waste of sand raw materials is reduced; when the water discharged by the bailing machine is pumped to the conical hopper, a vortex is formed in the conical hopper, the density of the sand is higher than that of the water, the sand falls into the wheel-type sand washer from the lower part of the conical hopper, and the water is thrown into the water outlet pipe above the sand washer under the action of centrifugal force and is discharged through the drainage system.

The invention is further configured to: the second material collecting box is divided into two groups, and four universal wheels are arranged on the lower end face of the second material collecting box.

By adopting the technical scheme, two groups of second material receiving boxes are arranged, and when one of the second material receiving boxes is filled with materials, the other second material receiving box can slide to the discharge end of the second dewatering screen to collect the materials, so that seamless material receiving is realized; the arrangement of the universal wheels is convenient for an operator to move the material receiving box.

The invention is further configured to: the discharge end of the second dewatering screen is provided with an annular guide rail, and the material receiving box is connected with the annular guide rail in a sliding mode.

Through adopting above-mentioned technical scheme, through setting up annular guide rail, the removal of the material case of being convenient for.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the washed sand production line is provided with the spraying device, so that dust is reduced, and impurities in the sand are less during washing through twice filtering, so that the washing effect of the sand is better during washing through the wheel type sand washer, and the washing effect is better after washing;

2. the return pipe pumps the water in the bailing machine into the wheel type sand washer, and the water is screened and washed again by the wheel type sand washer, so that the waste of the sandstone raw material is reduced;

3. and seamless material receiving is realized by arranging two groups of second material receiving boxes.

Drawings

FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of a round roller screen according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a spray assembly according to an embodiment of the present invention;

FIG. 4 is a perspective view of a hopper according to one embodiment of the present invention;

FIG. 5 is a schematic view of the structure of a return pipe according to an embodiment of the present invention;

fig. 6 is a partially enlarged schematic view of a portion a in fig. 1.

In the figure, 1, a bailer; 11. a first conveyor belt; 2. a first dewatering screen; 3. a material guide hopper; 4. vibrating screen; 41. a second conveyor belt; 42. a spray assembly; 421. a support frame; 422. a shower pipe; 423. a spray head; 43. a shaker support; 44. filtering with a screen; 45. a spring; 46. an eccentric roller; 5. round roller screening; 51. a first material receiving box; 52. a hopper; 53. a water inlet pipe; 6. a wheel type sand washer; 61. a return pipe; 611. a main reflux pipe; 612. a return branch pipe; 613. a conical hopper; 614. a water outlet pipe; 7. a second dewatering screen; 8. a second material receiving box; 81. a universal wheel; 82. and a ring-shaped guide rail.

Detailed Description

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

Referring to fig. 1, the processing production line of washed sand disclosed by the invention comprises a bailing machine 1, a first dewatering screen 2, a material guide hopper 3, a vibrating screen 4, a round rolling screen 5, a wheel type sand washer 6 and a second dewatering screen 7 which are arranged in sequence from upstream to downstream.

Referring to fig. 1 and 2, a discharge end of the bailing machine 1 faces a first dewatering screen 2, a first conveyor belt 11 is arranged at the discharge end of the first dewatering screen 2, and the tail end of the first conveyor belt 11 in the conveying direction faces a material guide hopper 3; a discharge port is arranged on the lower end surface of the material guide hopper 3 and is opposite to the vibrating screen 4; the vibrating screen 4 is obliquely arranged, the second conveyor belt 41 is arranged below the screen of the vibrating screen 4, the lower end of the vibrating screen 4 in the oblique direction is provided with a first material receiving box 51, and two sides of the vibrating screen 4 are respectively provided with a spraying assembly 42 which sprays water towards the vibrating screen 4; the round roller screen 5 is arranged at the tail end of the second conveyor belt 41 in the conveying direction, a discharge port is arranged below the round roller screen 5, and the discharge port is opposite to the wheel type sand washer 6; the second dewatering screen 7 is arranged at the discharge end of the wheel type sand washer 6, and the discharge end of the second dewatering screen 7 is provided with a second material receiving box 8.

Referring to fig. 1, specifically, shale shaker 4 is fixed on shale shaker support 43, and shale shaker 4 includes filter screen 44, and filter screen 44 sets up towards the discharge end slope along the feed end, and filter screen 44 lower extreme fixedly connected with spring 45, the spring 45 other end are fixed on shale shaker support 43, two eccentric rollers 46 of filter screen 44 both sides fixedly connected with, and eccentric roller 46 passes through motor drive, drives whole filter screen 44 vibration when eccentric roller 46 rotates to realize the filterable function of vibration.

With respect to the structure of the shower assembly 42, referring to fig. 1 and 3, the shower assembly 42 includes a support frame 421 and a shower pipe 422. Support frame 421 is the steel pipe of two vertical settings, and steel pipe fixed connection is subaerial in the workshop, shower 422 both ends respectively with support frame 421 fixed connection, and shower 422 accessible suction pump supplies water here, and shower 422 just opens the position of shale shaker 4 has a plurality of delivery port.

Referring to fig. 3, in order to improve the effect of reducing the dust, further, a spray head 423 is communicated with a water outlet of the spray pipe 422, and a water outlet end of the spray head 423 faces the vibrating screen 4. Through setting up shower nozzle 423, spray water with the form of dispersion through shower nozzle 423, abundant utilization water resource for it is more abundant even to spray water, improves dustproof effect.

Referring to fig. 1 and 4, the second conveyor belt 41 is provided with a hopper 52 at the end, the inner bottom wall of the hopper 52 is inclined, the lowest position of the inner bottom wall of the hopper 52 is connected with the discharging end of the hopper 52, and the discharging end of the hopper 52 faces the round roller screen 5. By arranging the hopper 52, the gravel conveyed from the second conveyor belt 41 is guided by the hopper 52 and easily falls into the round roller screen 5, so that the gravel is not easily dropped out of the production line.

With continued reference to fig. 1 and 4, a water inlet pipe 53 for adding water into the hopper 52 is further provided above the hopper 52. When the grit gets into hopper 52, inlet tube 53 injects water into hopper 52 for the grit is moist, then goes into the grit of round roller sieve 5 through continuous stirring, kneading, collision and friction each other, thereby destroys the steam layer of cladding sand grain, and then gets rid of the impurity that covers the grit surface, makes to wash the grit when filtering the grit, makes grit and dirt primary separation.

Referring to fig. 1 and 5, the wheel sand washers 6 are arranged in three groups, and the three groups of wheel sand washers 6 are arranged in sequence along the direction of the production line, in this embodiment, the wheel sand washer 6 is selected to be a double-row wheel sand washer. A return pipe 61 is arranged between the second group of wheel-type sand washers 6 and the third group of wheel-type sand washers 6, and the return pipe 61 comprises a return main pipe 611, a return branch pipe 612, a conical hopper 613 and a water outlet pipe 614; one end of the main return pipe 611 is communicated with the drainage end of the bailing machine 1, the other end of the main return pipe 611 is bifurcated to form two branch return pipes 612, the branch return pipes 612 are communicated with the side wall of the conical hopper 613, the upper end of the conical hopper 613 is communicated with the water outlet pipe 614, and the water outlet pipe 614 is communicated with a drainage system.

After the sand enters the wheel-type sand washer 6, the sand is continuously stirred, kneaded, collided and rubbed with each other by the wheel-type sand washer 6, so that a water vapor layer covering sand is damaged, impurities covering the surface of the sand are removed, the three sets of wheel-type sand washers 6 are arranged to clean the sand for three times, the cleaning effect is better, the mud content of finally obtained washed sand is lower, and the quality of finished products is higher. The water discharged by the bailing machine 1 still contains gravels meeting the requirements, the water in the bailing machine 1 is pumped into the wheel type sand washer 6 through the return pipe 61, and the sand is screened and washed again through the wheel type sand washer 6, so that the waste of the gravels is reduced. The reason why the tapered bucket 613 is provided is: when water discharged from the bailing machine 1 enters the tapered bucket 613, a vortex is formed inside the tapered bucket 613 under the action of inertia, sand having a higher density than water falls into the wheel washer 6 from below the tapered bucket 613, and water is thrown into the water outlet pipe 614 above the tapered bucket 613 under the action of centrifugal force and then discharged through the drainage system.

Referring to fig. 1 and 6, the second material receiving boxes 8 are arranged in two groups, and four universal wheels 81 are arranged on the lower end surface of the second material receiving boxes 8. Two groups of second material receiving boxes 8 are arranged, when one second material receiving box 8 is filled with materials, the other second material receiving box 8 can slide to the discharging end of the second dewatering screen 7 to collect the materials, and therefore seamless material receiving is achieved; the arrangement of universal wheel 81 is convenient for operating personnel to remove and receive the workbin.

Referring to fig. 6, further, the discharge end of the second dewatering screen 7 is provided with an annular guide rail 82, the annular guide rail 82 is fixed on the ground of the production workshop, and the universal wheels 81 are slidably connected with the annular guide rail 82. By providing the endless track 82, the movement of the bin is facilitated.

The implementation principle of the embodiment is as follows:

when the production line is used for producing washing sand, raw materials are conveyed into a first dewatering screen 2 through a bailing machine 1, after the washing sand is dewatered through the first dewatering screen 2, the raw materials are conveyed to a hopper 52 through a first conveyor belt 11, then the raw materials drop onto a vibrating screen 4 from a discharge hole, large-particle impurities which do not meet requirements are filtered through the vibrating screen 4, then the filtered sand is conveyed to a round roller screen 5 through a second conveyor belt 41 for secondary filtration, then the sand drops to a wheel type sand washer 6, the sand is cleaned through the wheel type sand washer 6, and the cleaned sand is dewatered through a second dewatering screen 7 to obtain a finished product; through setting up spray set, reduce the raise dust, through twice filtration for grit impurity is less when carrying out the washing, thereby makes the grit better when 6 washing of wheeled sand washer washing water effect, and then makes the washing back effect better.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a washed sand processing lines which characterized in that: the device comprises a bailing machine (1), a first dewatering screen (2), a material guide hopper (3), a vibrating screen (4), a round roller screen (5), a wheel type sand washer (6) and a second dewatering screen (7) which are arranged from upstream to downstream in sequence;

the discharge end of the bailing machine (1) is over against the first dewatering screen (2), the discharge end of the first dewatering screen (2) is provided with a first conveyor belt (11), and the tail end of the first conveyor belt (11) in the conveying direction is over against the material guide hopper (3);

a discharge hole is formed in the lower end face of the material guide hopper (3), and the discharge hole is opposite to the vibrating screen (4);

the vibrating screen (4) is obliquely arranged, a second conveyor belt (41) is arranged below a screen of the vibrating screen (4), a first material receiving box (51) is arranged at the lower end of the vibrating screen (4) in the oblique direction, and spraying assemblies (42) spraying water towards the vibrating screen (4) are respectively arranged on two sides of the vibrating screen (4);

the round roller screen (5) is arranged at the tail end of the second conveyor belt (41) in the conveying direction, a discharge hole is formed below the round roller screen (5), and the discharge hole is opposite to the wheel type sand washer (6);

the second dewatering screen (7) is arranged at the discharge end of the wheel type sand washer (6), and the discharge end of the second dewatering screen (7) is provided with a second material receiving box (8).

2. The washed-out sand processing production line according to claim 1, characterized in that: the spraying assembly (42) comprises a support frame (421) and a spraying pipe (422);

the support frame (421) are two vertically arranged steel pipes, the two ends of the spray pipe (422) are fixedly connected with the support frame (421), and the spray pipe (422) is opposite to the position of the vibrating screen (4) and is provided with a plurality of water outlets.

3. The washed-out sand processing production line according to claim 2, characterized in that: the water outlet of the spray pipe (422) is communicated with a spray head (423), and the water outlet end of the spray head (423) faces the vibrating screen (4).

4. The washed-out sand processing production line according to claim 1, characterized in that: the tail end of the second conveyor belt (41) is provided with a hopper (52), and the discharge end of the hopper (52) faces the round roller screen (5).

5. The washed-out sand processing production line according to claim 4, characterized in that: a water inlet pipe (53) for adding water into the hopper (52) is arranged above the hopper (52).

6. The washed-out sand processing production line according to claim 1, characterized in that: the three sets of wheel-type sand washers (6) are arranged in sequence.

7. The washed-out sand processing production line according to claim 6, characterized in that: a return pipe (61) is arranged between the second group of wheel-type sand washers (6) and the third group of wheel-type sand washers (6), and the return pipe (61) comprises a return main pipe (611), a return branch pipe (612), a conical hopper (613) and a water outlet pipe (614);

one end of the backflow main pipe (611) is communicated with the drainage end of the bailing machine (1), the other end of the backflow main pipe (611) is branched to form two backflow branch pipes (612), the backflow branch pipes (612) are communicated with the side wall of the conical hopper (613), the upper end of the conical hopper (613) is communicated with the water outlet pipe (614), and the water outlet pipe (614) is communicated to a drainage system.

8. The washed-out sand processing production line according to claim 1, characterized in that: the second material receiving boxes (8) are arranged into two groups, and four universal wheels (81) are arranged on the lower end face of each second material receiving box (8).

9. The washed-out sand processing production line according to claim 1, characterized in that: the discharge end of the second dewatering screen (7) is provided with an annular guide rail (82), and the material receiving box is connected with the annular guide rail (82) in a sliding mode.