CN113600334A

CN113600334A - Digital sand washing recovery workstation

Info

Publication number: CN113600334A
Application number: CN202110928576.4A
Authority: CN
Inventors: 程耀辉; 马娟; 赵来斌
Original assignee: Luoyang Longzhong Heavy Industry Machinery Co ltd
Current assignee: Luoyang Longzhong Heavy Industry Machinery Co ltd
Priority date: 2021-08-13
Filing date: 2021-08-13
Publication date: 2021-11-05
Anticipated expiration: 2041-08-13
Also published as: CN113600334B

Abstract

The invention discloses a digital sand washing recovery workstation, which comprises a spiral sand washing machine, a wheel type sand washing machine, a high-frequency vibration dewatering screen and a belt scale which are sequentially connected in series, wherein the spiral sand washing machine is obliquely arranged, and the discharge port at the tail end of the spiral sand washer is positioned above the feeding port of the wheel type sand washer, the discharge port of the wheel type sand washer is positioned above the feeding port of the high-frequency vibration dewatering screen, the spiral sand washer and the lower water tank of the high-frequency vibration dewatering screen are both communicated with a cyclone set through a slurry pump, the sand outlet of the cyclone group is positioned above the water tank of the wheel type sand washer, the digital sand washing recovery workstation increases the removal rate of impurities on the surface layer of the sand by designing the screw and simulating the manual kneading mode, and be convenient for sieve the interior large granule of grit, practice thrift the subsequent handling, realize digital demonstration moreover, be convenient for record and adjustment operation.

Description

Digital sand washing recovery workstation

Technical Field

The invention relates to the technical field of sand washing recycling machines, in particular to a digital sand washing recycling workstation.

Background

The sandstone is divided into natural sand and artificial sand according to the source, the natural sand comprises lake sand, river sand, sea sand and mountain sand, and the sandstone usually contains a certain amount of soil, mud blocks, stone powder, light substances, organic matters, grass roots, branches, shells, animal carcasses and other impurities after being mined out, so that the requirement of the building sand cannot be met, and the sand needs to be washed.

A sand washer is an engineering mechanical device for removing impurities in sand products, and is used for cleaning materials in industries such as gravel fields, mines, building materials, traffic, chemical engineering, water conservancy and hydropower, concrete mixing stations and the like.

In addition, in the sand washing process of the existing sand washer, most of the sand washers adopt a mode of simply soaking sand and repeatedly salvaging sand, the impurity removal rate of the surfaces of the sand washers is low, the sand washers cannot effectively screen the sand, and the sand washers need to be graded again, so that the processing progress is influenced.

Disclosure of Invention

The invention aims to overcome the existing defects and provide a digital sand washing and recycling workstation, which increases the removal rate of impurities on the surface layer of sand stones by designing a screw and simulating a manual kneading mode, is convenient for screening large particles in the sand stones, saves subsequent processes and can effectively solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a digital sand washing recovery workstation comprises a spiral sand washing machine, a wheel type sand washing machine, a high-frequency vibration dewatering screen and a belt scale which are sequentially connected in series, wherein the spiral sand washing machine is obliquely arranged, a discharge port at the tail end of the spiral sand washing machine is positioned above a feed port of the wheel type sand washing machine, a discharge port of the wheel type sand washing machine is positioned above the feed port of the high-frequency vibration dewatering screen, lower water tanks of the spiral sand washing machine and the high-frequency vibration dewatering screen are both communicated through a slurry pump and provided with a cyclone set, and a sand outlet of the cyclone set is positioned above a water tank of the wheel type sand washing machine;

the spiral sand washer comprises a screw rod capable of axially reciprocating, a shifting strip is arranged on a spiral blade of the screw rod, and a gap for sand and stone to pass through is reserved between the spiral blade and a rotating shaft of the screw rod;

the bottom of the water tank of the wheel type sand washer is provided with a plurality of groups of air nozzles which spray upwards, the side wall of the water tank of the wheel type sand washer is provided with water nozzles which spray towards the center, and the water nozzles on the two sides are arranged in a mutually staggered mode in height.

As a preferable technical scheme of the invention, the screw comprises a mandrel and a shaft sleeve which are combined in a spline shaft manner, a second spiral blade with the width of L3 is relatively and fixedly arranged outside the shaft sleeve, a gap with the distance of L2 is reserved between the second spiral blade and the outer wall of the shaft sleeve, a first spiral blade with the width of L1 is arranged on the outer attaching wall of the shaft sleeve, the rotating directions of the first spiral blade and the second spiral blade are opposite, L1 is not less than L2, L1 is less than L2+ L3, the screw pitch of the first spiral blade is not more than that of the second spiral blade, and the toggle bar is arranged on the working surface of the second spiral blade;

through two sets of spiral leaves that revolve to opposite, the different linear velocities of different radius of gyration of strip are stirred in the cooperation simultaneously, the grit in the single pitch is promoted and the inner loop is carried out, the mode that the artifical kneading is simulated, make the looks mutual friction between the grit, thereby promote the ability of getting rid of grit surface attachment, and rubbing the in-process, because equipment itself is at the operation in-process, influenced by power unit, certain vibrations can have, and the cooperation is rubbed the operation, can cause the big size grit to rise gradually, and float on the grit top layer, through the effect of first spiral leaf, drag the big granule grit backward, thereby guarantee to wash the big granule that the sand machine got into wheeled sand washer from the spiral and reduce.

As a preferred technical scheme of the invention, the spiral sand washer also comprises an axial cam set, wherein the axial cam set comprises two groups of end face cams with end faces mutually contacted, tapered rollers are arranged at the contacted end faces, the two groups of end face cams are respectively and fixedly arranged relative to a shaft sleeve and a rack of the spiral sand washer, and a plurality of groups of pressure transmitters are arranged on an end face cam fixing surface which is relatively fixed with the rack in an annular array along the axis;

the contact surface of end cam is the wave structural design, when two sets of end cam contact each other and rotate, can drive axle sleeve and dabber reciprocating motion that the axial is relative, and do not have serious impact in the motion process, the axial atress condition of axle sleeve can effectively be monitored to the multiunit pressure transmitter that the annular array arranged simultaneously, and can change according to the pressure transmitter atress difference value that different angles were arranged, carries out the calculation of the real-time material transport capacity of spiral sand washer, is convenient for realize production more meticulous.

As a preferred technical scheme of the invention, the bottom of a water tank of the wheel type sand washer is an inclined bottom wall, the spraying direction of an air nozzle is vertical to the bottom wall, a water level meter is arranged in the water tank, water nozzles arranged at different heights are provided with individually controlled electric control valves, and the output end of the water level meter is electrically connected with the input end of the electric control valve;

the water level in the water tank is monitored through the water level gauge, so that automatic production is convenient to realize, the liquid level is monitored through the water level gauge, and the water spray nozzle below the control liquid level performs high-pressure water flow injection, so that the flow of internal cleaning water is promoted, the flushing effect on the surface of the sand stone is increased, and the removal rate of the attachments on the surface layer of the sand stone is improved.

As a preferable technical scheme of the invention, the toggle bar is a spiral with the same pitch as the second spiral blade.

As a preferred technical scheme of the invention, the toggle strip is a divergent line which is radially and outwardly diverged;

through setting up the strip of stirring of different forms, the grit that is fit for different specifications washs the operation, reaches different grit separation and cleaning performance.

As a preferred technical scheme of the invention, auxiliary water level meters are arranged in the lower water tanks of the spiral sand washer and the high-frequency vibration dewatering screen, pressure sensors are arranged in the cyclone group, and the output ends of the auxiliary water level meters and the pressure sensors are respectively and electrically connected with the corresponding slurry pump control units;

the auxiliary water level meter is added, so that the water level of the water tank can be conveniently monitored, automatic water replenishing can be conveniently realized, and the pressure sensor is added to detect the pipeline pressure of the cyclone unit, so that the working power of the motor is adjusted, and the stable movement of equipment is ensured;

meanwhile, an equipment room is integrated in the equipment, a power distribution cabinet and a control cabinet of the equipment are integrated in the equipment room, and a display screen is integrated in the equipment room and used for displaying data of the sensors and the transmitters, so that the running state of the equipment is monitored in the equipment room conveniently.

Compared with the prior art, the invention has the beneficial effects that: the digital sand washing recovery workstation adopts a double-helix rotary screw mechanism and is matched with an axial cam group for use, so that the screw rod can axially reciprocate while rotating, a manual kneading mode is simulated, sand in a single thread pitch is repeatedly kneaded, the mutual friction among the sand is promoted, attachments on the surface of the sand are removed, and a water distribution mechanism above a spiral sand washing machine is matched, so that the sand is uniformly and fully contacted with washing water in the spiral sand washing machine, most of the attachments are taken away, the floating amount of the attachments in a water tank of a subsequent wheel type sand washing machine is reduced, and the single cleaning effect of the sand is favorably improved;

meanwhile, in the traditional wheel-type sand washer, after sand and stones enter a water tank, the sand and stones are directly precipitated at the bottom and need to be salvaged by an impeller to drive the sand and stones to interact with cleaning water in the water tank, so that surface cleaning is realized, and the cleaning force is limited;

and the double helix structure of the screw rod in the spiral sand washer, because the spiral blade close to the shaft position is a reverse helix, namely when the single feeding amount of the spiral sand washer is more, the reverse motion of partial feeding can be driven, thereby ensuring the material ration of the wheel type sand washer by single injection and ensuring the suspension effect of the sand in the water tank.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the screw structure of the present invention;

FIG. 3 is a cross-sectional view of the screw of the present invention;

FIG. 4 is a schematic view of another screw configuration of the present invention;

FIG. 5 is a schematic view of the axial cam pack deployment of the present invention;

FIG. 6 is a schematic view showing the distribution of air nozzles and water nozzles in the water tank of the wheel sand washer according to the present invention;

FIG. 7 is another structural schematic of the axial cam set of the present invention.

In the figure: 1. a spiral sand washer; 101. a mandrel; 102. a shaft sleeve; 103. a first helical blade; 104. a second helical blade; 105. an axial cam set; 106. the bar is stirred; 107. a pressure transmitter; 2. a wheel type sand washer; 201. a water spray nozzle; 202. an air nozzle; 203. a water level gauge; 3. a cyclone group; 4. a high-frequency vibration dewatering screen; 5. a belt weigher.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a technical solution: a digital sand washing recovery workstation comprises a spiral sand washing machine 1, a wheel type sand washing machine 2, a high-frequency vibration dewatering screen 4 and a belt scale 5 which are sequentially connected in series, wherein the spiral sand washing machine 1 is obliquely arranged, a discharge port at the tail end of the spiral sand washing machine 1 is positioned above a feed port of the wheel type sand washing machine 2, a discharge port of the wheel type sand washing machine 2 is positioned above a feed port of the high-frequency vibration dewatering screen 4, lower water tanks of the spiral sand washing machine 1 and the high-frequency vibration dewatering screen 4 are both communicated with and provided with a cyclone set 3 through a slurry pump, and a sand outlet of the cyclone set 3 is positioned above a water tank of the wheel type sand washing machine 2;

the spiral sand washer 1 comprises a screw rod capable of axially reciprocating, a shifting strip 106 is arranged on a spiral blade of the screw rod, and a gap for sand and stone to pass through is reserved between the spiral blade and a rotating shaft of the screw rod;

the bottom of the water tank of the wheel type sand washer 2 is provided with a plurality of groups of air nozzles 202 which spray upwards, the side wall of the water tank of the wheel type sand washer 2 is provided with water nozzles 201 which spray towards the center, and the arrangement heights of the water nozzles 201 at the two sides are staggered.

The screw comprises a mandrel 101 and a shaft sleeve 102 which are combined in a spline shaft mode, a second spiral blade 104 with the width of L3 is relatively and fixedly arranged outside the shaft sleeve 102, a gap with the distance of L2 is reserved between the second spiral blade 104 and the outer wall of the shaft sleeve 102, a first spiral blade 103 with the width of L1 is arranged outside the shaft sleeve 102 and attached to the outer wall, the rotating directions of the first spiral blade 103 and the second spiral blade 104 are opposite, L1 is not less than L2, L1 is less than L2+ L3, the screw pitch of the first spiral blade 103 is not more than that of the second spiral blade 104, and a toggle bar 106 is arranged on the working surface of the second spiral blade 104;

through two sets of spiral leaves that revolve to opposite, the different linear velocities of strip 106 different radius of gyration are stirred in the cooperation simultaneously, make the grit in the single pitch carry out the inner loop, the mode that the artifical kneading of simulation, make the mutual friction between the grit, thereby promote the ability of getting rid of grit surface attachment, and in-process kneading, because equipment itself is at the operation in-process, influenced by power unit, there is certain vibrations, and the operation is kneaded in the cooperation, can cause the big size grit to rise gradually, and float in the grit top layer, act on through first spiral leaf 103, drag the big granule grit backward, thereby guarantee to wash the big granule that sand machine 1 got into wheeled sand washer 2 from the spiral and reduce.

The spiral sand washer 1 further comprises an axial cam group 105, the axial cam group 105 comprises two groups of end face cams with end faces mutually contacted, tapered rollers are arranged at the positions of the contacted end faces, the two groups of end face cams are respectively and fixedly arranged with the shaft sleeve 102 and a rack of the spiral sand washer 1, and a plurality of groups of pressure transmitters 107 are arranged on an end face cam fixing surface which is relatively fixed with the rack in an annular array along an axis;

the contact surface of end cam is the wave structural design, when two sets of end cam contact each other and rotate, can drive axle sleeve 102 and dabber 101 and can take place the relative reciprocating motion of axial, and do not have serious impact in the motion process, the axial atress condition of axle sleeve 102 can effectively be monitored to the multiunit pressure transmitter 107 that the annular array arranged simultaneously, and can change according to the pressure transmitter 107 atress difference value that different angles were arranged, carry out the calculation of the real-time material transport capacity of spiral sand washer 1, be convenient for realize the production that becomes more meticulous.

The bottom of a water tank of the wheel type sand washer 2 is an inclined bottom wall, the spraying direction of an air nozzle 202 is vertical to the bottom wall, a water level meter 203 is arranged in the water tank, water nozzles 201 arranged at different heights are provided with independently controlled electric control valves, and the output end of the water level meter 203 is electrically connected with the input end of the electric control valve;

monitor the water level in the water tank through fluviograph 203, be convenient for realize automated production, and through fluviograph 203 control liquid level, the water spout 201 under the control liquid level carries out high-pressure water jet, makes inside washing water flow, increases the washing effect on grit surface to promote the clearance of grit top layer attachment.

The toggle bar 106 is a helical line of equal pitch to the second helical blade 104.

The toggle bar 106 is a diverging line that diverges radially outward;

through setting up the strip 106 of stirring of different forms, be fit for the grit cleaning operation of different specifications, reach different grit separation and cleaning performance.

Auxiliary water level meters are arranged in the lower water tanks of the spiral sand washer 1 and the high-frequency vibration dewatering screen 4, pressure sensors are arranged in the cyclone group 3, and the output ends of the auxiliary water level meters and the pressure sensors are respectively and electrically connected with the corresponding slurry pump control units;

the auxiliary water level meters are added, so that the water levels of the water tanks can be conveniently monitored, automatic water replenishing is conveniently realized, and the pressure sensors are added to detect the pipeline pressure of the cyclone group 3, so that the working power of the motor is adjusted, and the stable movement of equipment is ensured;

When in use: taking L1=50mm, L2=30mm, L3=200mm, the pitch of the first helical blade 103 is one third of the pitch of the second helical blade 104, the axial stroke of the screw is 15mm, and the screw reciprocates twice when rotating for one circle, during movement, the toggle bar 106 drives the sand to roll and exchange from the upper layer to the lower layer, and the first spiral blade 103 drives the sand on the surface layer to move backwards to contact with the second spiral blade 104 on the rear side, so that the gravels in the section are in a continuous flowing state, the gravels rub against each other, and in the flowing process, the large-particle gravels gradually float on the surface layer of the gravels, under the action of the first spiral blade 103, gradually moves backwards until the first spiral blade moves to the tail end of the spiral sand washer 1, this screening mode does not sieve the grit of specific specification, but carries out based on the grit of relatively great specification in the whole specification of grit, therefore it has comparatively wide application range.

Referring to fig. 7, the axial cam group 105 is divided into three layers, the contact surface of the first layer and the second layer is a cam surface, the second layer is connected with the third layer through an end surface bearing, the first layer is relatively fixedly arranged with the shaft sleeve 102, the third layer is relatively fixedly arranged with the frame, a gear ring is coaxially and fixedly arranged outside the second layer, the gear ring is connected with external motor power through gear transmission, the rotational speed difference between the second layer and the first layer is adjusted through motor rotational speed control, so that the axial movement amount and the movement period of the shaft sleeve 102 are controlled, and the kneading of the sand in the spiral sand washer 1 in different modes is realized;

and the pressure transmitter 107 is mounted between the third floor and the frame in a position that is not affected by the rotation of the second floor.

A flowmeter is integrated in a water replenishing pipeline of a water tank, a temperature measuring and controlling instrument and a rotating speed measuring and controlling instrument are integrated in driving motors of a spiral sand washer 1, a wheel type sand washer 2 and a cyclone group 3, the temperature measuring and controlling instruments and the rotating speed measuring and controlling instruments are converted into digital information through a digital PLC module and displayed on an operation screen, and recording and adjustment are facilitated.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A digital sand washing and recycling workstation, comprising a spiral sand washer (1), a wheel-type sand washer (2), a high-frequency vibration dewatering screen (4) and a belt scale (5) arranged in series in sequence, characterized in that : The spiral sand washer (1) is placed obliquely, and the discharge port at the end of the spiral sand washer (1) is above the inlet of the wheeled sand washer (2). ) outlet is located above the inlet of the high-frequency vibration dewatering screen (4). a cyclone group (3), the sand outlet of the cyclone group (3) is located above the water tank of the wheeled sand washer (2);

The spiral sand washing machine (1) includes a screw that can reciprocate in the axial direction, and a toggle bar (106) is provided on the screw blade of the screw, and there is a space between the screw blade and the rotating shaft of the screw for sand to pass through. Clearance;

The bottom of the water tank of the wheeled sand washing machine (2) is provided with several groups of jet nozzles (202) that spray upward, and the side wall of the water tank of the wheeled sand washing machine (2) is provided with water spray nozzles (202) that spray toward the center. 201), and the arrangement heights of the water spray nozzles (201) on both sides are staggered.

2. The digital sand washing and recycling workstation according to claim 1, wherein the screw comprises a mandrel (101) and a shaft sleeve (102) combined in the form of a spline shaft, and the shaft sleeve (102) is external The second helical blade (104) with a width of L3 is relatively fixedly arranged, and a gap of L2 is left between the second helical blade (104) and the outer wall of the shaft sleeve (102), and the shaft sleeve (102) is attached to the outside. The outer wall is provided with a first helical blade (103) with a width of L1, the first helical blade (103) and the second helical blade (104) have opposite directions of rotation, L1 is not less than L2, and L1<L2+L3, the The pitch of the first helical blade (103) is not greater than the pitch of the second helical blade (104), and the toggle bar (106) is arranged on the working surface of the second helical blade (104).

3. The digital sand washing and recycling workstation according to claim 2, characterized in that: the spiral sand washing machine (1) further comprises an axial cam group (105), and the axial cam group (105) comprises two groups The end face cams whose end faces are in contact with each other, and the conical rollers are arranged at the contact end faces, and the two sets of end face cams are respectively arranged relatively and fixedly with the shaft sleeve (102) and the frame of the spiral sand washer (1), and are relatively fixed with the frame. Several groups of pressure transmitters (107) are arranged in an annular array on the fixed surface of the end face cam along the axis.

4 . The digital sand washing and recycling workstation according to claim 1 , wherein the bottom of the water tank of the wheeled sand washing machine ( 2 ) is an inclined bottom wall, and the jetting direction of the air jets ( 202 ) is perpendicular to the bottom wall. 5 . , and a water level gauge (203) is arranged inside the water tank, and the water spray nozzles (201) arranged at different heights are provided with individually controlled electronically controlled valves, and the output end of the water level gauge (203) is electrically connected to the input end of the electronically controlled valve. .

5 . The digital sand washing and recycling workstation according to claim 1 , wherein the toggle bar ( 106 ) is a spiral with the same pitch as the second spiral blade ( 104 ). 6 .

6 . The digital sand washing and recycling workstation according to claim 1 , wherein the toggle bar ( 106 ) is a divergent line that diverges radially outward. 7 .

7. The digital sand washing and recycling workstation according to claim 1, characterized in that: auxiliary water level gauges are provided in the lower water tanks of the spiral sand washing machine (1) and the high-frequency vibration dewatering screen (4). A pressure sensor is arranged inside the cyclone group (3), and the output ends of the auxiliary water level gauge and the pressure sensor are respectively electrically connected with the corresponding control unit of the slurry pump.