CN101947478B - Final screening mechanism movable single-stage hammer screening crusher - Google Patents

Abstract

The utility model relates to a movable single-stage hammer type screening crusher with a final screening mechanism, which belongs to mining machinery. It includes a crusher box body with a crushing working chamber composed of left, right, front, rear boxes and an upper box body. The upper part of the left box body is formed as a feeding port; a crushing rotor with a hammer head is located on the crusher box body. ; a final screening mechanism, located in the crushing working chamber; a pre-screening mechanism, located on the top of the outside of the left box; a grid body, located in the crushing working chamber, the final screening mechanism includes the first sieve grate, The second sieve material grate, a pair of first sieve material grate support frames, a pair of second sieve material grate support frames and a support roller are characterized in that at least one pair of first rollers is set on one sieve material grate support frame, At least one pair of first rollers is set on another first sieve material grate support frame; Two rollers. Advantages: It reflects the convenience and speed of replacement, and reduces the work intensity.

Description

Final Screening Mechanism Movable Single-stage Hammer Screening Crusher

technical field

The invention belongs to the technical field of mining machinery, and in particular relates to a single-stage hammer-type sieving crusher with a movable final sieving mechanism, which is used for crushing limestone.

Background technique

As we all know, limestone is a widely used mineral raw material. In addition to being used to make cement, it is often used as a flux in metal smelting. Limestone is also an important material in power plant desulfurization and calcium carbide production. Active lime is mostly used in power plant desulfurization and calcium carbide production, and active lime is calcined from granular limestone. At present, when the shaft kiln method is used for calcination, the particle size of the limestone is required to be about 40-120mm; when the rotary kiln is used for calcination, the particle size of the limestone is required to be about 10-50mm. Limestone smaller than the above particle size cannot be used. That is to say, the calcination of the shaft kiln method requires the particle size of the limestone less than 40mm to be as small as possible; while the calcination of the rotary kiln requires the particle size of the limestone less than 10mm to be as small as possible. Taking calcium carbide production as an example, air needs to be introduced during the calcination process (blast calcination), so once the particle size of the limestone is too fine, it will affect the ventilation effect.

In the past, in the process of crushing limestone, in order to reduce fine materials as much as possible, that is, to avoid the situation that limestone cannot meet the above-mentioned calcination process requirements of shaft kiln or rotary kiln during crushing, extrusion method is usually used for crushing, such as jaw or cone crushing However, due to the small crushing ratio of this type of crusher, if the particle size required by the aforementioned shaft kiln calcination or rotary kiln calcination process is to be achieved, secondary or even tertiary crushing is required, resulting in complex production processes and equipment The investment is huge.

Also, in modern cement production, the traditional ball mill has gradually been replaced by a vertical roller mill with more energy-saving effects due to its high energy consumption. In the past, when using a ball mill to grind raw materials (limestone), the finer the limestone required, the better. Therefore, when measuring the technical characteristics of the crusher, not only the crushing ratio is large, but the higher the fine material rate in the product, the better. Today, however, roller mills are used for production. Too much powder is not conducive to the formation of a stable rolling bed, but reduces the efficiency of roller mills.

From the above description, it can be seen that the crushed limestone particles of the crusher in the prior art are obviously difficult to meet the requirements of the aforementioned process for the particles. Technological inspiration to learn from. For example, the dual-rotor single-stage hammer crusher housing provided by the authorized announcement number CN2678765Y is proposed around reducing the drop height of the ore entering the machine, reducing the failure rate and improving the service life of the machine; The type crusher is proposed to improve the uniform ratio of limestone and clay, so as to avoid clay sticking to the grate cracks, causing material accumulation to reduce (affect) the crushing efficiency, and to ensure uniform load of the crushing rotor. For this reason, the applicant has carried out beneficial exploration and attempt, and the technical scheme that will form to solve the above-mentioned technical problem has proposed the patent application (named as single-stage hammer type screening crusher) on the same day as the present application. As is well known in the industry, the principle of crushing ore by the crusher is to rely on the impact of multiple groups of hammerheads pivoted on the crushing rotor on the ore entering the crushing working chamber, that is, when the crushing rotor rotates, it drives The hammer on which the pivot is set hits the ore to break the ore, and the broken ore is screened out by the final screening mechanism. The position of the final screening mechanism in the crushing working chamber is below the crushing rotor, which consists of a pair of sieve grates that are hinged to each other and placed on the sieve grate support frame. , The gap between adjacent grate bars or adjacent grate blocks constitutes a sieve trough, and the ore crushed by the hammer head is drawn out from the sieve material trough. However, in the actual use process, due to the impact of heavy ore, especially under the shock of the hammer hitting the ore, and the accumulated wear and tear over time, the grate bar of the screen material will break (if it is a grate block Fragmentation will also occur). Therefore, once the grate bar is broken, it is necessary to remove the old one and replace it with a new one in time, that is, to replace the sieve material grate in time, otherwise the ore that needs to be hit by the hammer head will rush out from between the broken grate bars in advance.

In the prior art, the replacement of the sieve grate is regarded as a cumbersome engineering project, because if the heavy (also called bulky) sieve grate is to be moved out of the crusher together with the sieve grate support frame for setting the sieve grate, in addition to putting into the traction device In addition, a lot of manpower needs to be dropped into, and it is even more troublesome when the sieve grate supporting frame is brought into the bottom of the broken working chamber of the crusher with the newly enabled sieve grate. However, in the disclosed patent technical solutions including but not limited to the above examples, there is no technical revelation on how to effectively make the replacement of the sieve grate simple and save manpower. Design, the technical solution to be introduced below is based on this situation.

Contents of the invention

The task of the present invention is to provide a single-stage hammer-type sieving crusher with movable final sieving mechanism, which not only helps to reduce the input of manpower, but also facilitates the convenience and quickness of replacing the sieve grate.

The task of the present invention is accomplished in this way. A single-stage hammer-type screening crusher with a movable final screening mechanism includes a crushing machine with a crushing working chamber composed of left, right, front, rear boxes and an upper box. The chassis body, wherein the upper part of the left box body is formed as a feed inlet; a crushing rotor with a hammer head pivotally arranged in a spaced state is located in the crusher box body and is rotatably arranged between the front box body and the front box body. Between the rear boxes; a final screen mechanism for leading out the crushed ore crushed by the crushing rotor, which is arranged in the crushing working chamber and corresponds to the bottom of the crushing rotor; The ore is introduced into the crushing working chamber from the feed port, and at the same time, the crushed materials mixed in the raw ore that have reached the used particle size and are not crushed are pre-screened before being introduced into the crushing working chamber. The pre-screening mechanism is located in the left box The top of the outer side of the body and corresponds to the position of the feed inlet; a grid body, located in the crushing working chamber, is connected to the top of the left box and corresponds to the bottom of the feed inlet, and the The final screening mechanism includes a first sieve grate, a second sieve grate, a pair of first sieve grate support frame, a pair of second sieve grate support frame and a support roller, the first sieve grate is arranged on a pair of second sieve Between one sieve material grate support frame, the second sieve material grate is arranged between a pair of second sieve material grate support frame, one end of the first sieve material grate support frame is hinged with one end of the second sieve material grate support frame, and The other end of the first sieve grate support frame is fixed with a first upper hanging leg, which is hung on the front beam, and one end of the front beam extends to the Outside the front box, and supported on the front box, the other end extends to the outside of the rear box through the second through hole opened on the back box, and is supported on the back box. The second sieve grate support frame The other end of the other end is fixed with a second upper hanging foot, the second upper hanging foot is hung on the rear beam, and one end of the rear beam extends out of the front box through the hole opened on the front box body, and is supported on the front box On the body, the other end extends to the outside of the rear box through the hole provided on the rear box, and is supported on the rear box. The middle part of the support roller is matched with the bottom of a pair of first sieve grate support frames or Cooperate with the bottom of a pair of second sieve grate support frames, and one end of the support roller extends out of the front box and rests on the front box, and the other end extends out of the rear box and rests on the rear box , characterized in that: at least one pair of first rollers is pivotally arranged on one of the pair of first sieve grate support frames and toward the side of the front box body, and At least one pair of first rollers is also pivotally arranged on the other first sieve grate support frame and towards the side of the rear box; one of the screens in the pair of second sieve grate support At least one pair of second rollers are pivotally arranged on the material grate support frame and towards one side of the front box body, and on the other second sieve material grate support frame and towards the side of the rear box body. The shaft is provided with at least one pair of second rollers.

In a specific embodiment of the present invention, on the outer wall of the left box and at the bottom of the outer wall, there is formed a horizontal first spacer support eaves bent outwards, and on the right box On the outer wall of the body and at the bottom of the outer wall, a second pad support eaves bent outwards and horizontal are formed. On the first pad support eaves, first and second pads and The third pad, and the fourth pad, the fifth pad and the sixth pad are stacked at intervals on the supporting eaves of the second pad, and one end of the front beam rests on the first pad, and the other One end rests on the fourth pad, one end of the rear beam rests on the third pad, the other end rests on the sixth pad, one end of the support roller rests on the second pad, and the other One end rests on the fifth spacer.

In another specific embodiment of the present invention, the pre-screening mechanism, the grid body and the final screening mechanism sequentially form a gradient relationship in which the height decreases gradually from top to bottom.

In yet another specific embodiment of the present invention, the pre-screening mechanism includes a pair of pre-screening roller stands facing each other, a set of first screening conveyor rollers and a set of second screening conveyor rollers, A pair of pre-screening roller frames are connected to the top of the left box, and corresponding to the feed inlet, a group of first and second screening conveyor rollers are pivotally arranged on the pair of pre-screening rollers. Between the sieve roller frames, wherein: a group of first sieve conveying rollers and a group of second sieve conveying rollers form a height difference, and a group of second sieving conveying rollers is located between the feed inlet and a Between the set of first sieve conveying rollers.

In yet another specific embodiment of the present invention, there is a gap between the first set of sieving conveying rollers for the falling of the crushed materials that have reached the particle size in the raw ore, and the set of second sieving rollers There is also a gap between the conveying rollers for the falling of the broken materials that have reached the particle size in the raw ore, and there are first flanges distributed along the axial interval on the surface of a group of first screening conveying rollers, while in a group of The surfaces of the second screening conveying rollers are all provided with second flanges distributed along the axial interval at intervals.

In yet another specific embodiment of the present invention, the cross-sectional shapes of the first and second flanges are both elliptical or peach-shaped.

In a further specific embodiment of the present invention, the grid body includes a group of grids and a grid lower connecting beam, and the upper ends of a group of grids are formed on the grid upper connecting beam in a spaced state, The gap between the adjacent grids constitutes a blanking trough, wherein: in a group of grids, a grid pivot extends from the outer sides of the first and last grids, and the grid pivots are arranged on the grids. On the grid pivot seat, the grid pivot seat is fixed with the crusher box body, the middle part of the grid lower connecting beam is connected with the lower end of a group of grids, and one end of the grid lower connecting beam is supported on the first supporting base , the first support seat is fixed to the inner wall of the front box body, the other end of the grid lower connecting beam is supported on the second support seat, and the second support seat is fixed to the inner wall of the rear box body.

In a further specific embodiment of the present invention, the upward facing surface of the grid forms a set of grid steps for gradually reducing the height of the upper surface of the grid from top to bottom, and the blanking The width of the groove is 40-150mm.

In yet another specific embodiment of the present invention, the two ends of the pair of first sieve grates and the intervals at the bottom form a set of first fitting flanges, and the pair of second sieves The two ends of the material grate and the bottom are each spaced to form a set of second fitting flanges, and the pair of first sieve material grate support frame and the side facing the first sieve material grate are recessed at intervals. A set of first fitting grooves, a set of second fitting grooves are recessed at intervals on the support frame of the pair of second sieve grate and facing the side of the second sieve grate, the first The number of a fitting protrusion is equal to the number of the first fitting grooves, and the positions correspond to each other, and the number of the second fitting protrusions is equal to the number of the second fitting grooves , and the positions correspond to each other, wherein: the first fitting protrusion is embedded in the first fitting groove, and the second fitting protrusion is embedded in the second fitting groove.

In yet another specific embodiment of the present invention, there are three to nine groups of hammerheads, which are distributed in three to nine equal parts on the crushing rotor, and the number of hammerheads in each group is equal, and The installation positions of each group of hammerheads on the crushing rotor are the same.

The technical scheme provided by the present invention is because the first roller is set on the first sieve grate support frame of the final screening mechanism, and the second roller is set on the second sieve grate support frame, so when the first sieve grate and/or After the second sieve grate is damaged, the first and second sieve grate can be carried by the first and second sieve grate supporting frames along the guide rail artificially placed at the bottom of the crushing working chamber through the first and second rollers. Easy removal can not only reduce the input of manpower, but also reflect the convenience and speed of replacement, and can reduce the work intensity during replacement.

Description of drawings

Fig. 1 is a structural diagram of a specific embodiment of the present invention.

Fig. 2 is a partial schematic diagram of the cooperation between the final screening mechanism and the rear box.

Fig. 3 is a schematic diagram of the overall structure of a single-stage hammer-type screening crusher with a movable final screening mechanism of the present invention.

Detailed ways

In order to enable the examiners of the patent office, especially the public, to understand the technical essence and beneficial effects of the present invention more clearly, the applicant will describe in detail below in conjunction with the accompanying drawings in the form of embodiments, but none of the descriptions of the embodiments is a description of the present invention. Restriction of the inventive solution, any equivalent transformation made according to the concept of the present invention which is only in form but not in substance shall be regarded as the scope of the technical solution of the present invention.

Please see Fig. 1 and Fig. 3, the crusher box body 1 that provides is made up of left box body 11, right box body 12, front box body 13, rear box body 14 and upper box body 16, and consists of left, right, front, The rear boxes 11 , 12 , 13 , 14 and the upper box 16 jointly form a crusher box body 1 with a crushing working chamber 15 . The top of the left box body 11 is formed as a feed port 111, and the top of the left box body 11 is equipped with a pre-screening mechanism 4 at a position corresponding to the feed port 111, and the pre-screening mechanism 4 includes a pair of pre-screening mechanisms. Sieve roller frame 41, a group of first screening conveying rollers 42 and a group of second screening conveying rollers 43, a pair of pre-screening roller frames 41 are arranged parallel to each other, and are connected to the top of the left casing 11 of the crusher box body 1 Connected, a group of first sieving conveying rollers 42 and a group of second sieving conveying rollers 43 are rotatably arranged between a pair of pre-screening roller frames 41, wherein: the position ratio of one group of first sieving conveying rollers 42 The position of a set of second sieving conveying rollers 43 is high, that is to say, a height difference is formed between the first and second sieving conveying rollers 42, 43, or a sieving feeding step is formed. The quantity of one group of first and second screening conveying rollers 42,43 is not limited by the quantity shown in Figure 2, and the second screening conveying roller 43 is located between the feed port 111 and the first screening conveying roller 42 That is to say, one group of first sieving conveying rollers 42 is located behind one group of second sieving conveying rollers 43, and the ore after sieving by one group of first sieving conveying rollers 42 is sent to a group of second sieving rollers. Sieve conveying rollers 43, a group of second sieving conveying rollers 43 discharge the re-sieved ore from the feed port 111 to the crushing working chamber 15 which will be described in detail below, more precisely, to the grid body 5 above.

As can be seen from the above description, the first and second screening conveyor rollers 42, 43 are in essence the receiving and pre-screening mechanism of the present invention. In view of this reason, the first and second screening conveyor rollers 42, 43 can be understood It is a pre-screening roller, and each roller rotates in the same direction. The ore (also called stone) on the roller surface is pushed by the roller, and is driven (driven) from the receiving end to the direction of the crushing working chamber 15 until The feed port 111 enters the crushing working chamber 15 .

There is a gap between the aforementioned first group of screening conveying rollers 42 and between a group of second screening conveying rollers 43, and whether it is each roller body of a group of first screening conveying rollers 42 or a group of first screening rollers The surface of each roller body of the secondary screening conveying roller 43 is provided with flanges distributed at intervals along the axial direction. The applicant defines the flanges on a group of first screening conveying rollers 42 as first flanges 421 , and similarly defines the flanges on a group of second screening conveying rollers 43 as second flanges 431 . The above-mentioned flange forms a drop channel equivalent to the allowable sieving particle size, for the crushed material to fall from it, and because the above-mentioned flange has the function of pushing the material layer forward, the flange can be called a roller plate. The cross-sectional shape of the roller can be circular, oval or peach-shaped. The operation of the oval or peach-shaped roller can make the material layer bump up and down while advancing, and enhance the flow rate of the broken material from the material. Separate functionality in layers. The quantity of the aforementioned first group of first sieve conveying rollers 42 and one group of second sieve conveying rollers 43 depends on the occupancy rate of qualified materials in incoming materials. If the proportion of qualified materials is high, the number of rollers will be correspondingly more ,vice versa. In addition, the number of rollers is related to the sieveability of the ore material. When the material is wet and contains a lot of mud, the number of rollers will increase accordingly. The concept of peach shape mentioned above refers to the shape of peaches in the fruit category.

As shown in Fig. 3, in one group of first sieve conveying rollers 42, the two rollers located below the feed opening 44, that is, the two rollers near the feed opening 44, bear the brunt of the load discharged from the feeder. For the impact of large ores, the rollers with reinforced structure are adopted with damping device 45. The preferred damping device 45 is a rubber pad, so as to ensure that the rollers will not be damaged when large ores weighing several tons are unloaded.

It can be seen from the above description that the function of the aforementioned pre-sieving mechanism 4 is to screen out the fragments in the raw ore that have reached the particle size requirements of the finished product in advance while delivering the ore to the feed port 111, so as to prevent them from entering the crushing working chamber 15 Participating in the crushing of large pieces of ore together, there has been a crushing situation. According to the known common sense, a group of first sieving conveying rollers 42 and a group of second sieving conveying rollers 43 are each driven by a corresponding power mechanism. Taking the example shown in Fig. 1, the sprocket wheel 432 on the first second sieving conveying roller 43 in a group of second sieving conveying rollers 43 is driven by the motor through the reducer, and one group of second sieving conveying rollers 43 The rest of the second sieving conveyor rollers 43 are connected successively by chains (because each second sieving conveyor roller 43 is fixedly equipped with a sprocket 432), the working principle of a group of first sieving conveyor rollers 42 Ditto.

A crushing rotor 2 is rotatably arranged in the aforementioned crusher box body 1 by the rotor shaft heads 22 at its two ends, specifically: one of the pair of rotor shaft heads 22, that is, one of the rotor shaft heads facing the front box body 13 22 is supported on the front housing 13 via a bearing seat equipped with bearings, while the other rotor shaft head 22, the one facing the rear housing 14, is also supported on the rear housing 14 via a bearing housing equipped with bearings , and also extend outside the rear casing, that is, extend outside the crusher casing body 1 (this embodiment is the rear casing 14 of the crushing casing body 1) and are fixedly connected with the transmission wheel 6 of the power transmission mechanism through the keyway 221 provided thereon . In this embodiment, five groups of hammer heads 21 are arranged on the crushing rotor 2 with five equal pivots. Of course, the number of groups of hammer heads 21 is not limited by the embodiment, for example, it can be as few as three groups or as many as nine groups. , when there are three groups, each group is separated by 120°, when there are nine groups, each group is separated by 40°, the concepts of 120° and 40° mentioned here are based on the circumferential direction of the cylinder of the crushing rotor 2 of. In addition, in this embodiment, although it is shown that the number of hammerheads 21 in each group is seven, it should not be limited, because when the size of the hammer crusher is large and the length of the crushing rotor 2 is long, then it can be Correspondingly increase the number of rows of hammerheads 21 in the axial direction. In the same example, when the diameter of the crushing rotor 2 is large, the number of rows of hammerheads 21 on the rotating surface of the rotor 2 is correspondingly increased. Each hammer head 21 is arranged on the hammer handle 212 through the hammer head pin shaft 211 , and the hammer handle 212 is arranged on the crushing rotor 2 through the hammer handle shaft 2121 . When the transmission wheel 6 of the power transmission mechanism drives the crushing rotor 2 to rotate, the ores entering the crushing working chamber 15 are struck and screened on the grid body 5 in sequence by the hammer head 21 on the crushing rotor 2. Mechanism 3 continues to beat and screen the remaining material.

Please continue to see FIGS. 1 and 3 . The main crushing work of the present invention is carried out on the grid body 5 , which is located between the feed port 111 and the final screening mechanism 3 . The structure of the grid body 5 is as follows: including a group of grids 51 and a grid lower connecting beam 52, the grid 51 is substantially in the shape of a comb, and a group of grids 51 are integrally formed on the grid upper connecting beam 511, And in a group of grids 51, a grid pivot 512 is respectively extended on the outside of the base (upper end of the figure) of the first and last grid, and each grid pivot 512 pivot is arranged on the grid pivot. On the seat 5121, taking the position shown in Fig. 1 as an example, the grille pivot seat 5121 of the first grille pivot 512 that is the front grille 51 is fixed on one end of the front box body 13. The upper part of the inner wall, and the grid pivot seat 5121 of the grid pivot 512 of the last grid 51 is fixed on the upper inner wall of the other end of the front box body 13 . A blanking trough 514 is formed between adjacent grids 51. The width of the blanking trough 514, that is, the width of the grid gap, should be able to accommodate the maximum feeding granularity, that is, it should meet the requirements compatible with the maximum blanking granularity. The preferred width of the trough 514 is 40-150 mm, and 70-120 mm is selected in this embodiment, which is specifically selected by the user (user) of the equipment within the range of 40-150 mm according to actual requirements. The grid gap width is determined by the maximum discharge granularity. In addition, a set of steps 513 for reducing the height of the upper surface of the grille 51 from top to bottom is formed on the upward facing surface of each grille 51 to provide the aforementioned hammer head 21 with an impact on the ore. The condition of crushing, and the ore that is first crushed, that is, the ore that reaches the finished product size, leaks from the aforementioned blanking chute 514, which reflects the first crushing and first out, and avoids over-crushing. It can be seen that the area of the grid body 5 can be called the grid coarse crushing chamber (or the grid coarse crushing area), which is composed of the grid body 5 and the adjacent part of the crushing rotor 2. In this area (or called the interval) , the hammer head 21 can directly smash to the material block (ore), and make the material block smashed to reach the width of the grid gap be discharged from the blanking chute 514 on the spot. The middle part of the aforementioned grid lower connecting beam 52 is connected to the lower end of a group of grids 51, that is, to one end of a group of grids 51 facing the final screen mechanism 3, and one end of the grid lower connecting beam 52 is supported on the first supporting base 521 The other end is supported on the second supporting seat 522, wherein the first supporting seat 521 is fixed to the inner wall of the front box body 13, and the second supporting seat 522 is fixed to the inner wall of the rear box body 14. Between the grid lower connecting beam 52 and the first and second supporting seats 521 and 522, a shim 523 is respectively arranged. The function of the shim 523 can adjust the gap between the lower end of the grid body 5 and the working circle of the crushing rotor 2, Thereby controlling the ore particle size entering the final screening mechanism 5.

See also Fig. 2 and continue in conjunction with Fig. 1 and Fig. 3, at the outer wall of aforementioned front box body 13 and be positioned at the bottom and extend outwards with a first spacer support eaves 135 (also can claim the first spacer support cornice plate Or the first spacer is stacked and folded), and the first, second and third spacers 132, 133, 134 are stacked at intervals on the first spacer support eaves 135, and the first spacer supports the middle area of the eaves 135 The width is wider than the width of the two ends of the region, and in order to save or claim to reduce the number of the third pad 134, on the first pad support eaves 135 and a front box is fixed below the third pad 134 Spacer support 1351, the third spacer 134 is placed on the front case spacer support 1351. As shown in FIG. 2 , on the outer wall of the aforementioned rear box 14 and at the bottom, there is also a second pad support eaves 141 that has the same shape, structure and function as the first pad support eaves 135 . The fourth, the fifth, and the sixth pads 143, 144, 145 are stacked at intervals on the second pad support eaves 141, and the width of the middle area of the second pad support eaves 141 is larger than the width of the two end areas, and Also, in order to reduce the number of the sixth spacer 145, on the second spacer support eaves 141 and below the sixth spacer 145, a rear box spacer bracket 1451 is preferably fixed in a fixed manner by welding. Six pads 145 are placed on the back box pad support 1451. Wherein: the first and fourth pads 132 and 143 correspond to each other; the second and fifth pads 133 and 144 correspond to each other; the third and sixth pads 134 and 145 correspond to each other.

The final screening mechanism 3 provided comprises a first and a second sieve grate 31,32, a pair of first and second sieve grate supports 33,34 and a back-up roller 35, the first sieve grate 31 two The lower part (bottom surface) of the end promptly faces toward the surface of the first sieve material grate support frame 33 and each forms a group of first fitting flanges 311 in a spaced state, and the upper surface of a pair of first sieve material grate support frames 33 faces the first The surface of the sieve grate 31 is respectively formed with a group of first fitting grooves 332 in a spaced state, and the first fitting flange 311 at one end of the first sieve grate 31 is connected to the pair of first sieve grate support frames 33. The first fitting groove 332 on one of the first sieve grate support frames 33 is fitted; The first fitting groove 332 on the other first sieve grate support frame 33 in the frame 33 is fitted. One end of a pair of first sieve material grate support frames 33 is hingedly connected with one end of a pair of second sieve material grate support frames 34 respectively by hinge shaft 334, and the other end of the first sieve material grate support frames 33 is fixedly provided with a first Upper hanging leg 331, the first upper hanging leg 331 is hung on the front crossbeam 3311, and one end of the front crossbeam 3311 passes through the first through hole 131 provided on the front box body 13, and is placed on the aforementioned stacked state. Stacked on the first spacer 132 (shown in Fig. 1 ) on the first spacer support eaves 135, the other end stretches to the outside of the second through hole 142 provided on the rear box body 14, and rests on the aforementioned stacked The state is stacked on the fourth pad 143 on the second pad support eaves 141 (shown in FIG. 2 ). The bottoms of the two ends of the second sieve grate 32, that is, the surfaces facing the second sieve grate support frame 34 each form a group of second fitting flanges 321 in a spaced state, and the direction of a pair of second sieve grate support frames 34 The surface of the second sieve grate 32 is respectively provided with a group of second fitting grooves 342 in a spaced state, and the second fitting flange 321 at one end of the second sieve grate 32 is connected to a pair of second sieve grate support frames 34. The second fitting groove 342 on one of the second sieve grate support frames 34 is fitted; and the second fitting flange 321 at the other end of the second sieve grate 32 is fitted with a pair of second sieve grate The second fitting groove 342 on the other second sieve grate support frame 34 in the support frame 34 is fitted. The other end of the second sieve material grate support frame 34 is fixedly provided with a second upper hanging foot 341, and this second upper hanging foot 341 is hung on the rear crossbeam 3411, and one end of the rear crossbeam 3411 is stretched outside the front box body 13 (through Open the hole on the front box body 13), and rest on the aforementioned third pad 134 (shown in Fig. 1 ) that is stacked on the front box body pad support frame 1351 in a stacked state, and the other of the rear beam 3411 One end extends out of the rear box body 14, and rests on the sixth pad 145 (shown in FIG. 2 ) stacked on the rear box pad support frame 1451 in a stacked state. As can be seen from the above description, the two ends of the first sieve material grate 31 are matched with a pair of first sieve material grate support frames 33 in a fitting manner, and the two ends of the second sieve material grate 32 in the same example are matched with a pair of second sieve material The grate supporting frames 34 are fitted together, and when the first and second sieve grate grates 31, 32 need to be overhauled or replaced, they can be unloaded from the first and second sieve grate supporting frames 33, 34 respectively. Leave. What the applicant needs to declare is: if the position of the first fitting flange 311 on the first sieve grate 31 is reversed with the position of the first fitting groove 332 on the first sieve grate support frame 33, and the The positions of the second fitting flange 321 on the second sieve grate 32 and the second fitting groove 342 on the second sieve grate support frame 34 are reversed, so, undoubtedly, it belongs to equivalent transformation, and should belong to protection scope of the present invention. A support roller 35 is arranged on the bottom of a pair of second sieve grate support frame 34 in the present embodiment, plays supporting role to the second sieve material grate support frame 34, namely by the middle part of support roller 35 to a pair of second Screen material grate support frame 34 supports. The roller shaft head 351 at one end of the support roller 35 is rested on the aforementioned first pad support in a stacked state after passing through the front box body 13 (through the roller shaft head hole provided on the front box body 13 ). On the second spacer 133 on the eaves 135 (shown in Fig. 1); holes) rest on the aforementioned fifth pad 144 placed on the second pad support eaves 141 in a stacked state (shown in FIG. 2 ). It can be seen that the positions of the first, second and third pads 132, 133, and 134 on the first pad support eaves 135 are respectively connected to the end of the front beam 3311, the roller shaft head 351 and the rear of the support roller 35. The ends of the beams 3411 correspond to the fourth, fifth and sixth pads 143 , 144 , and 145 arranged on the second pad support eaves 141 .

Continue to see Fig. 1 and Fig. 2, in order to make the front beam 3311 reliably located (supported on) the first and fourth pads 132, 143, and, in order to make the rear beam 3411 reliably located (supported on) the first Three, on the sixth cushion block 134,145, and, in order to make a pair of roller axle head 351 of back-up roller 35 be positioned on (support) on the second, the fifth cushion block 133,144 firmly, therefore to the first, The cushion blocks of the second, third, fourth, fifth and sixth cushion blocks 132, 133, 134, 143, 144 and 145 are stacked with each other by mortise and tenon effect. For example: in a group of pads, the adjacent pads are stacked in such a way that the concave edges and the protrusions cooperate. In the present embodiment, the support roller 35 is positioned under the second sieve grate support frame 34, but if it is moved to the below of the first sieve grate support frame 33, and the second and fifth pads 133, 144 Adaptive shifting of the position of , it should be regarded as an equivalent replacement. In addition, the middle regions of the front and rear beams 3311, 3411 and the supporting rollers 35 can also rest on the corresponding pads.

As can be seen from the above description, the number of the first fitting protrusions 311 is equal to the number of the first fitting grooves 332 and their positions correspond to each other; The numbers are equal and the positions correspond to each other. Furthermore, it can be seen from the above description of the final screening mechanism 3 that the first sieve grate support frame 33 and the first sieve grate 31 are hung on the front and rear boxes 13, 14 by the first upper hanging legs 331 in the long side direction. , and the second sieve grate support frame 34 carries the second sieve grate 32 and is hung on the front and rear boxes 13, 14 by its second upper hanging foot 341. The first and second sieve grate support frames The respective hinged ends of 33,34, that is, one end of the first and second sieve grate support frame 33,34 that is hinged by the hinge shaft 334 is supported by the support roller 35.

In the process that the invention is in use, even if the hammer head 21 on the crushing rotor 2 is worn and shortened, under the state of temporary shutdown, as long as the front and rear beams 3311, 3411 and The roller shaft heads 351 of the backup rollers 35 are jacked up one after another, and the space between the working circle of the crushing rotor 2 and the inner surfaces of the first and second sieve grates 31 and 32 can be satisfied by adding or replacing pads of required thickness. Require. In addition, the adjustment speed is fast, the downtime is short, and the labor intensity of workers is low. In particular, the utilization rate of the hammer head 21 can be significantly improved, and the user's use cost can be reduced.

As a technical gist of the present invention: a pair of first rollers 333 are arranged on each pivot in the longitudinal direction of the aforementioned pair of first sieve grate support frames 33 and on the side facing away from the aforementioned crushing rotor 2 respectively, that is to say A pair of first rollers 333 are set on the first sieve grate support frame 33 facing the front box body 13 in a pair of first sieve material grate support frame 33 and facing the side of the front box body 13, and a pair of first sieve material grate support frame 333 A pair of first rollers 333 are also arranged on a first sieve grate support frame 33 facing the rear casing 14 in a sieve grate support frame 33 and toward the side of the rear casing 14 . In the same way, a pair of second rollers 343 are arranged on each pivot in the longitudinal direction of a pair of second sieve material grate support frames 34 and also on the side facing away from the crushing rotor 2 (the reason is the same as the description of setting the first roller 333) . When the first and second sieve grate support frames 33, 34 and the first sieve grate support frame 33 are used to carry the first sieve grate 31 and the second sieve grate support frame 34 is used to carry the second sieve grate 32 When taking out the overhaul or replacement from the crushing chamber 15, the first and second rollers 333, 343 can play an auxiliary role. , The second rollers 333,343 correspond to each other, so that the first and second rollers 333,343 are in contact with the guide rails, so that the first and second sieve grate support frames 33,34 can be moved out easily and effortlessly. When taking out the first and second sieve material grates 31,32, earlier the support roller 35 is taken away.

The grates constituting the first and second sieve grates 31, 32 can be a plurality of grate bars interspersed on the corresponding first and second sieve grate support frames 33, 34, or they can be block grate plate sets On the first and second sieve material grate support frames 33, 34, the grate slits can be either horizontal (this embodiment) or vertical (consistent with the striking direction of the hammer head 21), so as not to cause final sieving Changes in the nature of agency 3 work.

In the example of this embodiment, the wrapping angle of the final screening mechanism 3 can reach 125°, but if the ore can be crushed better, or when the discharge particle size is allowed to be large, the wrapping angle of the final screening mechanism 3 can be reduced.

So far, the meaning of "screening" in the name of the present invention can be fully known. Pre-screening by the pre-screening mechanism 4 means that no crushing is applied to the qualified products in the raw materials (ores), and the whole crushing process follows the follow-up process all the time. Broken and out.

The applicant briefly describes the working principle of the present invention in conjunction with Fig. 1 and Fig. 2, the raw ore is fed to the pre-screening mechanism 4 of the present invention through the feed port 44 by the heavy-duty feeder, and the ore is fed by a group of first screening mechanism 4 of the pre-screening mechanism 4 One sieving conveying roller 42 transitions to a group of second sieving conveying rollers 43, and then the second sieving conveying rollers 43 are introduced into the grid body 5 at the feed port 111 for the hammer head 21 of the crushing rotor 2 to strike, The grid body 5 has a shape that is wide at the top and narrow at the bottom and gradually shrinks, so that the large ore is gradually broken and becomes smaller, and in the whole process, all the scraps that have reached the width of the grid gap, that is, the width of the aforementioned blanking groove 514, can be crushed. Immediately discharge from drop chute 514. The remaining ore that has not yet reached the discharge size enters the front grate of the final screen mechanism 3 under the crushing rotor 2, that is, the first sieve grate 31 and the rear grate, that is, the second sieve grate 32, and continues to be crushed by the hammer on the crushing rotor 2. 21 hits. And in this process, it is also crushed and discharged, so that it will not stay.

In a word, the technical solution provided by the present invention achieves the purpose of the invention and embodies the technical effect expected by the applicant.

Claims (10)

1. A movable single-stage hammer-type sieving crusher with a final screen mechanism, comprising a crushing machine consisting of left, right, front and rear boxes (11, 12, 13, 14) and an upper box (16) The crusher box body (1) of the working chamber (15), wherein the upper part of the left box body (11) is formed as a feed inlet (111); a crushing rotor (2 ), located in the crusher box body (1), and rotatably arranged between the front box (13) and the rear box (14); one for crushing the crushing rotor (2) The final screening mechanism (3) for the ore extraction is located in the crushing working chamber (15) and corresponds to the bottom of the crushing rotor (2); one is used to feed the ore to be crushed from the feed port ( 111) The pre-sieving mechanism (4) that introduces the crushing working chamber (15) and simultaneously screens out the crushed materials mixed in the raw ore that have reached the used particle size and are exempted from crushing before being introduced into the crushing working chamber (15) , located on the top of the outside of the left box (11) and corresponding to the position of the feed inlet (111); a grid body (5), located in the crushing working chamber (15), and the left box ( 11), and corresponding to the bottom of the feed inlet (111), the final screening mechanism (3) includes a first sieve grate (31), a second sieve grate (32), a pair of The first sieve material grate support frame (33), a pair of second sieve material grate support frame (34) and a support roller (35), the first sieve material grate (31) is located at a pair of first sieve material grate support frame (33), the second sieve grate (32) is located between a pair of second sieve grate support frame (34), one end of the first sieve grate support frame (33) and the second sieve grate support One end of the frame (34) is hinged, and the other end of the first sieve grate support frame (33) is fixed with a first upper hanging foot (331), and the first upper hanging foot (331) is hung on the front beam (3311) Above, one end of the front beam (3311) extends out of the front box (13) through the first through hole (131) opened on the front box (13), and is supported on the front box (13), The other end extends out of the rear casing (14) through the second through hole (142) provided on the rear casing (14), and is supported on the rear casing (14). The second sieve grate support frame (34 ) is fixed with a second upper hanging foot (341), the second upper hanging foot (341) is hung on the rear beam (3411), and one end of the rear beam (3411) is set on the front box (13 ) extends to the outside of the front box (13), and is supported on the front box (13), and the other end extends to the outside of the back box (14) through the hole provided on the back box (14) , and supported on the rear box body (14), the middle part of the support roller (35) is matched with the bottom of a pair of first sieve material grate support frame (33) or with a pair of second sieve material grate support frame (34) The bottom of the supporting roller (35) is extended to the outside of the front box (13) and rested on the front box (13) ), the other end extends out of the rear box (14), and rests on the rear box (14), it is characterized in that: one of the pair of first sieve grate support frames (33) At least one pair of first rollers (333) are pivotally arranged on one side of the front casing (13) on the sieve grate support frame (33), and on the other first sieve grate support frame (33) At least one pair of first rollers (333) are also pivotally arranged on the side facing the rear box (14); At least one pair of second rollers (343) are pivotally arranged on one side of the front box body (13) on the material grate support frame (34), and on another second sieve material grate support frame (34). And at least one pair of second rollers (343) are also pivotally arranged on one side facing the rear box (14). 2. The movable single-stage hammer-type sieving crusher with final screening mechanism according to claim 1, characterized in that an outwardly curved bottom is formed on the outer wall of the left box (11) and at the bottom of the outer wall. The folded and horizontal first pad support eaves are formed on the outer wall of the right box (12) and at the bottom of the outer wall to form an outwardly bent and horizontal second pad support eaves (141 ), on the first pad supporting eaves, first, second pads (132, 133) and third pads (134) are stacked at intervals, and on the second pad supporting eaves ( 141) The fourth and fifth cushion blocks (143, 144) and the sixth cushion block (145) are stacked at intervals, one end of the front beam (3311) rests on the first cushion block (132), and the other One end rests on the fourth pad (143), one end of the rear beam (3411) rests on the third pad (134), and the other end rests on the sixth pad (145), and the support One end of the roller (35) rests on the second pad (133) and the other end rests on the fifth pad (144). 3. The final screening mechanism movable single-stage hammer-type screening crusher according to claim 1, characterized in that said pre-screening mechanism (4), grid body (5) and final screening mechanism (3 ) constitutes a gradient relationship in which the height decreases gradually from top to bottom. 4. The movable single-stage hammer-type sieving crusher of final screening mechanism according to claim 1, characterized in that said pre-sieving mechanism (4) comprises a pair of pre-sieving roller stands ( 41), one group of first screening conveyor rollers (42) and one group of second screening conveyor rollers (43), a pair of pre-screening roller frames (41) are connected to the top of the left box (11), And corresponding to the feed inlet (111), a set of first and second sieving conveying rollers (42, 43) are all pivotally arranged between the pair of pre-sieving roller frames (41), Wherein: a group of first sieving conveying rollers (42) and a group of second sieving conveying rollers (43) form a height difference, and one group of second sieving conveying rollers (43) is located at the feeding Between the mouth (111) and a set of first sieving conveying rollers (42). 5. The movable single-stage hammer-type sieving crusher with the final screening mechanism according to claim 4, characterized in that a set of first sub-sieving conveying rollers (42) is kept for supplying raw ore. There is also a roll gap for the falling of the crushed material of the particle size in the raw ore between the second group of sieve conveying rollers (43), and in a group of first sieve The surface of the sieve delivery roller (42) is all distributed with the first flange (421) along the axial interval, and the surface of the second sub-sieve delivery roller (43) in one group is all distributed with the second flange (421) along the axial interval. 431). 6. The final screen mechanism movable single-stage hammer-type screening crusher according to claim 5, characterized in that the cross-sectional shapes of the first and second flanges (421, 431) are oval or Peach shaped. 7. The final screen mechanism movable single-stage hammer screen crusher according to claim 1, characterized in that the grid body (5) includes a group of grids (51) and a grid bottom connection Beams (52), the upper ends of a group of grids (51) are formed on the grid upper connecting beams (511) in a spaced state, and the gaps between adjacent grids (51) form blanking grooves (514), wherein : in a group of grids (51), a grid pivot (512) is respectively extended on the outside of the first and last grid (51), and the grid pivot (512) pivot is arranged on the grid pivot On the seat (5121), the grid pivot seat (5121) is fixed to the crusher box body (1), the middle part of the grid lower connecting beam (52) is connected to the lower end of a group of grids (51), and the grid One end of the lower connecting beam (52) is supported on the first supporting seat (521), and the first supporting seat (521) is fixed to the inner wall of the front box body (13), and the other end of the lower connecting beam (52) of the grid One end is supported on the second support seat (522), and the second support seat (522) is fixed to the inner wall of the rear box body (14). 8. The final screen mechanism movable single-stage hammer screen crusher according to claim 7, characterized in that the upward facing surface of the grid (51) constitutes a group for making the grid (51) The height of the upper surface of the grille step (513) gradually decreases from top to bottom, and the width of the falling groove (514) is 40-150mm. 9. The movable single-stage hammer-type sieving crusher with the final screening mechanism according to claim 1, characterized in that the two ends of the pair of first sieve grate (31) and each interval at the bottom constitute a A set of first fitting flanges (311), the two ends of the pair of second sieve grates (32) and the intervals at the bottom form a group of second fitting flanges (321), the pair of On the first sieve grate support frame (33) and toward the side of the first sieve grate (31), each interval is recessed with a set of first fitting grooves (332), and the pair of second sieves On the material grate support frame (34) and toward the side of the second sieve material grate (32), a group of second fitting grooves (342) are recessed at intervals, and the first fitting flange (311 ) is equal to the number of the first fitting grooves (332), and their positions correspond to each other, and the number of the second fitting flanges (321) is equal to the number of the second fitting grooves ( 342) are equal in number and corresponding to each other, wherein: the first fitting protrusion (311) is embedded in the first fitting groove (332), and the second fitting protrusion (321) is embedded in the second fit in the groove (342). 10. The movable single-stage hammer-type screening crusher with a final screening mechanism according to claim 1, characterized in that the number of the hammer heads (21) is three to nine groups, and the crushing rotor (2) It is distributed in three to nine equal parts, the number of each group of hammerheads (21) is equal, and the installation positions of each group of hammerheads (21) on the crushing rotor (2) are the same. the

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