CN115365135A - Screening device for needle-shaped ballast particles - Google Patents

Abstract

The invention relates to the technical field of screening devices, in particular to a screening device for needle-shaped ballast particles. A screening device for needle-shaped ballast particles, comprising a vibrating platform, a needle selection box fixedly installed on the top surface of the vibration platform, and a transmission module a fixedly installed inside the needle selection box, the transmission module a An annular belt is connected to the drive on the peripheral side, and a plurality of equally spaced blocking groups are installed on the surface of the annular belt, and each blocking group includes a group of blocking rods distributed in a linear array and vertically connected with the annular belt. The beneficial effects of the present invention are: through the setting of the needle selection box, the chip selection box, the needle selection flow channel and the chip selection flow channel, the device can efficiently complete the screening operation of needle flake particles. During the screening operation, the chip selection box passes through the Cooperating with the chip selection flow channel, firstly, the sheet-shaped particles whose thickness meets the standard can be screened out, and then the needle selection box can screen out the needle-shaped particles whose length meets the standard by cooperating with the needle selection flow channel.

Description

A screening device for needle-shaped ballast particles

technical field

The invention relates to the technical field of screening devices, in particular to a screening device for needle-shaped ballast particles.

Background technique

Needle-shaped ballast is ballast particles that are flat and slender in shape. Needle-shaped ballast will reduce the stable structure of the ballast bed and easily cause the phenomenon of flying ballast. However, needle-shaped ballast is inevitable in railway ballast. According to the unified standard, the content of needle-shaped and sheet-shaped ballast in the track railway track bed should not exceed 20%. Therefore, when testing whether the ballast bed of the railway meets the requirements, the ballast aggregate in a certain area will be collected, screened, and tested to detect the content index of needle-shaped ballast in the ballast aggregate within a certain range, and then Determine whether the ballast in the section of the ballast bed needs to be replaced.

In the prior art, the patent document with the publication number CN111790587B discloses a device and method for screening needle-shaped crushed pebbles. The device includes a sheet-like screen, a needle-shaped screen, a screen wall, a screen support, a screen wall and The screen support is fixedly connected, the sheet screen and the needle screen can be placed on the screen support replaceably, the sheet screen is provided with screen holes, the needle screen is provided with needle holes, There is a setting plate under the net, and the setting plate and the needle-shaped screen are placed on the screen support in turn to sample the crushed pebble samples. The device first screens the sheet samples, puts the sheet screen into the screen wall, and places On the sieve support, and then sieve the needle-shaped sample, there is a set plate under the needle sieve, and the set plate and the needle sieve are placed on the sieve support in turn, and the sieve cover is placed on the top of the sieve wall, however When the above-mentioned device is used for screening needle-flaky particles, the whole process needs to be carried out manually in stages, so the screening efficiency is low, and the above-mentioned screening device cannot perform re-screening operations during screening, so the screening accuracy is low. Based on this, the present invention A screening device for needle-shaped ballast particles is provided to solve the problems raised in the above-mentioned background technology.

Contents of the invention

The invention aims at the technical problems existing in the prior art, and provides a screening device for needle-shaped ballast particles to solve the problems that the existing screening device cannot realize automatic screening, low screening efficiency and screening precision.

The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a screening device for needle-shaped ballast particles, comprising a vibrating platform, the top surface of the vibrating platform is fixedly equipped with an obliquely arranged needle selection box, and the needle selection box The interior of the transmission module a is fixedly installed, and the peripheral side of the transmission module a is connected with an annular selection belt, and the surface of the annular selection belt is equipped with a number of equidistantly distributed block groups, each of which is It includes a set of blocking rods distributed in a linear array and vertically connected to the circular belt selection, needle selection flow channels are arranged between any two of the blocking rods, and a return mechanism is connected to the bottom of the needle selection box;

A chip selection box is fixedly installed on the top surface of the needle selection box, and a discharge channel is fixedly arranged at the connection between the needle selection box and the chip selection box. A conveying mechanism is installed inside the chip selection box, and the chip selection box A baffle plate is fixedly installed above the top surface of the selection box and corresponding to the conveying mechanism, and a chip selection flow channel is fixedly arranged between the baffle plate and the opposite surface of the conveying mechanism, and a material dial mechanism is installed on the surface of the baffle plate. The side of the chip selection box is fixedly installed with a collection box that cooperates with the material shifting mechanism and has an open top. One end of the discharge port of the collection box is connected with a material lifting mechanism that cooperates with the conveying mechanism.

The beneficial effects of the present invention are:

1) Through the setting of the needle selection box, the chip selection box, the needle selection flow channel and the chip selection flow channel, the device can efficiently complete the screening operation of needle flake particles. During the screening operation, the chip selection box passes through the chip selection flow channel With the cooperation, firstly, the sheet-shaped particles whose thickness meets the standard can be screened out, and then the needle-selecting box can screen out the needle-shaped particles whose length meets the standard through the cooperation of the needle selection channel. Through the above-mentioned screening operation, it can be automatically realized The screening operation of needle flake particles can effectively improve the screening efficiency and automation degree of the device through the above screening operation.

2) Through the setting of the material-lifting mechanism and the material-returning mechanism, when realizing the screening operation of needle flake particles, the re-screening operation during chip selection and needle selection can be realized. Through the realization of the above-mentioned re-screening function, the device can be effectively improved. The screening accuracy and reduce the leakage rate of the device.

On the basis of the above technical solutions, the present invention can also be improved as follows.

Further, the vibration platform includes a shock absorber, a group of regularly distributed casters are installed on the bottom surface of the shock absorber, vibration excitation motors are fixedly installed on both sides of the shock absorber, and the top surface of the shock absorber It is fixedly connected with the needle selection box.

Further, the material return mechanism includes a material return cylinder arranged obliquely, one end of the feed port of the material return cylinder is fixedly communicated with the needle selection box, and a return pipe is fixedly connected to the upper part of the material return cylinder, and the material return One end of the discharge port of the tube communicates with the discharge flow channel, the first screw blade module is installed inside the material return cylinder, and the bottom end of the material return cylinder is fixedly provided with a miscellaneous material discharge port.

Further, the material lifting mechanism includes a vertically arranged lifting tube, the peripheral side of the lifting tube is fixedly connected with the chip selection box, and the bottom of the lifting tube is fixedly communicated with the collecting box through a joint pipe, and the The upper part of the lifting cylinder is fixedly connected with a discharge pipe whose discharge direction is facing the conveying mechanism, and a second screw blade module is installed inside the lifting cylinder.

Further, both the first spiral blade module and the second spiral blade module include a conveying motor and a rotating shaft, the output shaft end of the conveying motor is fixedly connected to the rotating shaft, and spiral conveying blades are fixedly installed on the peripheral side of the rotating shaft.

Further, the conveying mechanism respectively includes a transmission module b installed inside the chip selection box and a material blocking plate fixed inside the chip selection box. The material mechanism includes a transmission module c installed inside the baffle plate. The peripheral side of the transmission module c is connected with an endless driving belt. The surface of the endless driving belt is equipped with two Unloading paddle.

Further, the transmission module a, transmission module b and transmission module c all include a transmission motor, a driving roller and a driven roller respectively, the output shaft end of the transmission motor is fixedly connected with the driving roller, and the endless belt selection , the inner wall of the endless drive belt and the endless conveyor belt are all connected with driving rollers and driven rollers at corresponding positions.

Further, the width of the discharge channel is the same as the height of the chip selection channel, and the distance between two pairs of the blocking groups is 1.2-1.3 times the width of the discharge channel.

Further, the side of the needle selection box facing the return cylinder is inclined downward, the inclination angle of the needle selection box is 30°, the inclination direction and angle of the circular selection belt are the same as the needle selection box, and the inclination angle of the needle selection box is the same. The bottom surface of the needle selection box and the side away from the return cylinder are fixedly connected with a material selection nozzle, and the surface of the annular selection belt is fixedly provided with a rescreening area corresponding to the position between the discharge flow channel and the return mechanism. The surface of the annular belt selection is fixedly provided with a direct selection area corresponding to the position between the lower material flow channel and the material selection nozzle.

Further, a set of positioning plates distributed in a linear array is fixedly installed on the inner top of the needle selection box and corresponding to the position of the direct selection area, and a set of The elastic retaining bar, the bottom end of the elastic retaining bar is fixedly provided with a "J"-shaped guide portion bent toward the direction of the material selection nozzle, and the elastic retaining bar is made of elastic rubber.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the sectional structure schematic diagram of Fig. 1 of the present invention;

Fig. 3 is a schematic diagram of a partially enlarged structure at A in Fig. 2 of the present invention;

Fig. 4 is the structural representation of annular belt selection and blocking rod of the present invention;

Fig. 5 is the structural representation of positioning plate and elastic retaining bar of the present invention;

Fig. 6 is a schematic structural view of the endless drive belt and the blanking paddle of the present invention;

Fig. 7 is a structural schematic diagram of the transmission module c and the collecting box of the present invention.

In the accompanying drawings, the list of parts represented by each label is as follows:

1. Needle selection box, 2. Transmission module a, 3. Ring belt selection, 4. Stop rod, 5. Chip selection box, 6. Discharging flow channel, 7. Baffle plate, 8. Chip selection flow channel, 9 , Collecting box, 10, shock absorber, 11, caster, 12, excitation motor, 13, return barrel, 14, return pipe, 15, first screw blade module, 16, lifting barrel, 17, unloading Material pipe, 18, second spiral leaf module, 19, transmission module b, 20, endless conveyor belt, 21, transmission module c, 22, endless drive belt, 23, feeding paddle, 24, material selection nozzle , 25, positioning plate, 26, elastic retaining bead, 27, "J" shape guide, 28, blocking material plate.

Detailed ways

The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

The present invention provides following preferred embodiments:

As shown in Figure 1-7, a screening device for needle-shaped ballast particles includes a vibration platform, and the top surface of the vibration platform is fixedly equipped with an inclined needle selection box 1, and the inclination angle of the needle selection box 1 is 30°. °, the vibration platform includes a shock absorber 10, a group of regularly distributed casters 11 are installed on the bottom surface of the shock absorber 10, and excitation motors 12 are fixedly installed on both sides of the shock absorber 10, and the top surface of the shock absorber 10 is in contact with the pin The selection box 1 is fixedly connected, and when working, the two vibration excitation motors 12 output the vibration frequency in a set state to provide the vibration frequency output of the vibration excitation motor 12, so that the screening device can perform vibration screening and vibration blanking operations;

The inside of the needle selection box 1 is fixedly installed with a transmission module a2, and the peripheral side of the transmission module a2 is connected with an annular selection belt 3. The inclination direction and angle of the annular selection belt 3 are the same as that of the needle selection box 1. 3 is set at an inclination angle, so that the miscellaneous materials screened out by the annular belt 3 can automatically flow downward under the action of gravity;

The surface of the annular belt 3 is equipped with a number of equally spaced blocking groups, and each blocking group includes a group of blocking rods 4 distributed in a linear array and vertically connected to the annular belt 3, and two blocking rods 4 are arranged between each other. There is a needle selection channel, and the stop rod 4 is vertically set on the surface of the annular selection belt 3 and the stop rod 4 is made of metal. In actual assembly, according to the screening requirements, the width of the needle selection channel can be customized according to actual needs;

The distance between two blocks is 1.2 times of the width of the lower material runner 6;

The bottom of the needle selection box 1 is connected with a return mechanism, and the return mechanism includes a return material cylinder 13 that is inclined. The needle selection box 1 is inclined downward toward the side of the return material cylinder 13. One side of the barrel 13 is fixedly connected with a material selection nozzle 24;

One end of the feeding port of the return barrel 13 is fixedly connected with the needle selection box 1, and the upper part of the return barrel 13 is fixedly connected with a return pipe 14, and the first screw blade module 15 is installed inside the return barrel 13, and the return barrel 13 The bottom end is fixedly provided with miscellaneous material outlet;

The top surface of the needle selection box 1 is fixedly equipped with a chip selection box 5, and the connection between the needle selection box 1 and the chip selection box 5 is fixedly provided with a discharge flow channel 6, and one end of the discharge port of the return pipe 14 is connected to the discharge flow channel. 6 connectivity;

The surface of the annular selection belt 3 and the position between the corresponding discharge flow channel 6 and the return mechanism are fixedly provided with a rescreening area, and the surface of the annular selection belt 3 corresponds to the gap between the discharge flow channel 6 and the material selection nozzle 24. The position is fixed and there is a direct selection area; the ballast not selected for the first time slides from the circular selection belt 3 to the return tube 13, and is transported to the return pipe 14 through the first spiral blade module 15, and then enters the re-screening area for re-screening ;

A set of positioning plates 25 distributed in a linear array are fixedly installed on the inner top of the needle selection box 1 and corresponding to the position of the direct selection area. The bottom surface of each positioning plate 25 and the position corresponding to the center line of each needle selection flow channel are installed with elastic retaining strips. 26. The bottom end of the elastic retaining bar 26 is fixedly provided with a "J"-shaped guide part 27 bent towards the direction of the material selection nozzle 24. The elastic retaining bar 26 is made of elastic rubber material. Through the setting of the elastic retaining bar 26, the waiting The screened particles can be close to the surface of the annular selection belt 3 when flowing;

The inside of the chip selection box 5 is equipped with a conveying mechanism, the top surface of the chip selection box 5 and the top of the corresponding conveying mechanism are fixedly installed with a baffle plate 7, and a chip selection flow channel 8 is fixedly arranged between the baffle plate 7 and the opposite surface of the conveying mechanism. The width of the blanking channel 6 is the same as the height of the chip selection channel 8;

The specific height of the chip selection channel 8 and the width of the needle selection channel can be customized according to the national standard;

The conveying mechanism respectively includes a transmission module b19 installed inside the chip selection box 5 and a material blocking plate 28 fixed inside the chip selection box 5, and the peripheral side of the transmission module b19 is connected with an endless conveyor belt 20;

The surface of the baffle plate 7 is equipped with a feeding mechanism, and the side of the chip selection box 5 is fixedly installed with a collection box 9 that cooperates with the feeding mechanism and has an open top;

The shifting mechanism includes a transmission module c21 installed inside the baffle plate 7;

The transmission module a2, the transmission module b19 and the transmission module c21 all include a transmission motor, a driving roller and a driven roller respectively, the output shaft end of the transmission motor is fixedly connected with the driving roller, the ring selection belt 3, the ring driving belt 22 and the ring The inner wall of the conveyor belt 20 is connected with the driving roller and the driven roller at the corresponding positions;

The peripheral side of the transmission module c21 is connected with an endless drive belt 22. The surface of the endless drive belt 22 is equipped with two regularly distributed blanking paddles 23 that cooperate with the endless conveyor belt 20. During work, the conveying of the endless drive belt 22 The direction is 90° to the conveying direction of the endless conveyor belt 20, and when working, there is a gap between the bottom end of the blanking paddle 23 and the endless drive belt 22, and the gap height is 0.5cm;

One end of the discharge port of the collection box 9 is connected with a material lifting mechanism that cooperates with the conveying mechanism, and the top of the collection box 9 is open;

The material-lifting mechanism comprises a vertically provided material-lifting tube 16, the peripheral side of the material-lifting tube 16 is fixedly connected with the sheet selection box 5, and the bottom of the material-lifting tube 16 is fixedly communicated with the collection box 9 through a joint pipe, and the side of the material-lifting tube 16 The upper part is fixedly connected with a discharge pipe 17 whose discharge direction is facing the conveying mechanism, and a second spiral blade module 18 is installed inside the lifting cylinder 16 .

The first helical blade module 15 and the second helical blade module 18 both include a conveying motor and a rotating shaft, the output shaft end of the conveying motor is fixedly connected with the rotating shaft, and the peripheral side of the rotating shaft is fixedly equipped with a helical conveying blade, the first helical blade module 15 and the second helical blade module The two helical blade modules 18 are existing mechanisms and will not be repeated here;

Concrete use method steps of the present invention are as follows:

This device is mainly suitable for the screening of needle-shaped ballast particles. Before use, the height of the chip selection flow channel 8, the width of the discharge flow channel 6 and the length of the needle selection flow channel can be customized according to national standards or actual needs. During the screening operation, the endless conveyor belt 20 conveys the material to the direction of the material flow channel 6 at a set speed, and the endless drive belt 22 works slowly, and the unloading dial 23 located above it will have a thickness greater than the height of the sheet selection flow channel 8. The ballast remaining on the surface of the endless conveyor belt 20 is dialed back to the collection box 9, and the endless belt selection 3 and the endless conveyor belt 20 move at the same speed and in the same direction. At the material end, after the material is poured in, the material whose thickness is smaller than the chip selection flow channel 8 then flows to the lower material flow channel 6 through the chip selection flow channel 8, and the material whose thickness is greater than the chip selection flow channel 8 is retained on the surface of the endless conveyor belt 20 and passed through the lower material flow channel. Under the action of the material shifting plate 23, it enters the collecting box 9, and is flipped and flipped through the material lifting cylinder 16. After the flipping and flipping are completed, the material re-enters the feeding end of the annular selection belt 3, and then passes through the sheet selection flow. Channel 8 is used for re-screening. Due to the irregular shape of the ballast particles, there may be errors in the ballast after the first screening. Therefore, re-screening can effectively avoid the inaccuracy of screening caused by the state of the ballast passing through the chip selection channel 8. , the unqualified ballast after multiple screenings will be collected in the collection box 9, and the screening device will be taken out manually;

The chips selected by the chip selection channel 8 enter between the two block groups through the lower material channel 6. When the chip material flows through the lower material channel 6, due to the specification setting of the lower material channel 6, the chip The longest side of the grain-shaped particles can fall between two or two gear groups in a parallel state, and the two-two gear rods 4 screen the length of the grains to screen out the needle-shaped grains in the grains, which are prone to accumulation of needle-shaped grains during screening Therefore, through the vibration frequency output of the set vibration motor 12, the screening device can perform vibration screening and vibration blanking operations, and the screened needle-shaped particles are discharged through the material selection nozzle 24, and the unselected for the first time The particles flow through the re-screening area to be re-screened once, and the materials after re-screening are re-screened circularly under the action of the feeding mechanism. The material is conveyed in the direction of the outlet, and then the non-acicular particles are discharged.

In summary: the beneficial effects of the present invention are embodied in:

Through the setting of the needle selection box, chip selection box, needle selection flow channel and chip selection flow channel, the device can efficiently complete the screening operation of needle flake particles. During the screening operation, the chip selection box cooperates with the chip selection flow channel , firstly, flake-shaped particles whose thickness meets the standard can be screened out, and then the needle selection box can screen out needle-shaped particles whose length meets the standard by cooperating with the needle selection flow channel.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention Inside.

Claims (10)

1. A screening device for needle-shaped ballast particles, characterized in that it comprises a vibrating platform, the top surface of the vibrating platform is fixedly equipped with a needle selection box (1) which is inclined, and the needle selection box (1) ) is fixedly installed with a transmission module a (2), and the peripheral side of the transmission module a (2) is connected with an annular belt (3), and the surface of the annular belt (3) is installed with several etc. Each block group includes a set of block rods (4) distributed in a linear array and vertically connected to the annular belt (3), and each pair of block rods (4) is set There is a needle selection flow channel, and the bottom of the needle selection box (1) is connected with a return mechanism; A chip selection box (5) is fixedly installed on the top surface of the needle selection box (1), and a discharge channel (6) is fixedly arranged at the connection between the needle selection box (1) and the chip selection box (5), A conveying mechanism is installed inside the chip selection box (5), and a baffle plate (7) is fixedly installed on the top surface of the chip selection box (5) and above the corresponding conveying mechanism, and the baffle plate (7) and the conveying mechanism A chip selection flow channel (8) is fixedly arranged between the opposite surfaces, the surface of the baffle plate (7) is equipped with a material shifting mechanism, and the side of the chip selection box (5) is fixedly installed with a A collection box (9) with an open top, one end of the discharge port of the collection box (9) is connected with a material lifting mechanism that cooperates with the conveying mechanism. 2. A screening device for needle-shaped ballast particles according to claim 1, characterized in that, the vibration platform includes a shock absorber (10), and a bottom surface of the shock absorber (10) is installed with a A set of regularly distributed casters (11), both sides of the shock absorber (10) are fixed with vibration excitation motors (12), the top surface of the shock absorber (10) is fixed to the needle selection box (1) connect. 3. A screening device for needle-shaped ballast particles according to claim 1, characterized in that, the feeding mechanism includes a feeding cylinder (13) arranged obliquely, and the feeding cylinder (13) One end of the feeding port is fixedly connected with the needle selection box (1), and the upper part of the feeding tube (13) is fixedly connected with a feeding pipe (14), and one end of the feeding port of the returning pipe (14) is connected with the lower The material flow channel (6) is connected, the first screw blade module (15) is installed inside the material return cylinder (13), and the bottom end of the material return cylinder (13) is fixedly provided with a miscellaneous material outlet. 4. A screening device for needle-shaped ballast particles according to claim 3, characterized in that, the lifting mechanism includes a vertically arranged lifting cylinder (16), and the lifting cylinder (16) ) is fixedly connected with the film selection box (5), the bottom of the lifting tube (16) is fixedly connected with the collecting box (9) through a joint pipe, and the upper part of the lifting tube (16) is fixedly connected with The discharge direction is directly facing the discharge pipe (17) of the conveying mechanism, and a second screw blade module (18) is installed inside the lifting cylinder (16). 5. A screening device for needle-shaped ballast particles according to claim 4, characterized in that, both the first screw blade module (15) and the second screw blade module (18) include a conveying motor and The rotating shaft, the output shaft end of the conveying motor is fixedly connected with the rotating shaft, and the spiral conveying blades are fixedly installed on the peripheral side of the rotating shaft. 6. A screening device for needle-shaped ballast particles according to claim 1, characterized in that, the conveying mechanisms respectively include transmission modules b (19) and The material blocking plate (28) fixed inside the sheet selection box (5), the peripheral side of the transmission module b (19) is connected to the endless conveyor belt (20), and the material shifting mechanism includes a baffle plate ( 7) The internal transmission module c (21), the peripheral side of the transmission module c (21) is connected with an annular driving belt (22), and the surface of the annular driving belt (22) is installed with two regularly distributed And the blanking paddle (23) that cooperates with endless conveyor belt (20). 7. A screening device for needle-shaped ballast particles according to claim 6, characterized in that the transmission module a (2), transmission module b (19) and transmission module c (21 ) respectively include a transmission motor, a driving roller and a driven roller, the output shaft end of the transmission motor is fixedly connected with the driving roller, the endless belt selection (3), the endless driving belt (22) and the endless conveyor belt (20) The inner walls of the rollers are connected with the driving roller and the driven roller at the corresponding positions. 8. A screening device for needle-shaped ballast particles according to claim 1, characterized in that the width of the discharge channel (6) is the same as the height of the chip selection channel (8), and the two The distance between the two blocking groups is 1.2-1.3 times of the width of the lower material runner (6). 9. The device for screening needle-shaped ballast particles according to claim 1, characterized in that, the needle selection box (1) is inclined downward toward the side of the return cylinder (13), so that The inclination angle of the needle selection box (1) is 30°, the inclination direction and inclination angle of the circular belt selection belt (3) and the needle selection box (1) are the same, and the bottom surface of the needle selection box (1) is far away from the back One side of the material barrel (13) is fixedly connected with a material selection nozzle (24), and the surface of the annular selection belt (3) is fixedly provided with a complex In the screening area, the surface of the annular selection belt (3) is fixedly provided with a direct selection area corresponding to the position between the lower material flow channel (6) and the material selection nozzle (24). 10. A screening device for needle-shaped ballast particles according to claim 1, characterized in that a set of linear arrays is fixedly installed on the inner top of the needle selection box (1) and corresponding to the position of the direct selection area Distributed positioning plates (25), the bottom surface of each positioning plate (25) and the position corresponding to the centerline of each needle selection channel are equipped with elastic retaining bars (26), the bottom of the elastic retaining bars (26) The end is fixed with a "J"-shaped guide part (27) bent toward the direction of the material selection nozzle (24), and the elastic retaining bar (26) is made of elastic rubber.

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