Multi-stage screening device for mountain cutting stones

Abstract

The utility model relates to the technical field of stone screening, in particular to a multistage screening device for mountain cutting stone. The device comprises a machine shell and a feeding hopper fixedly connected to the machine shell, and a first-stage screening mechanism used for screening large-particle broken stones, a second-stage screening mechanism used for screening small-particle broken stones and a collecting hopper arranged below the second-stage screening mechanism are arranged in the machine shell. The collecting hopper is used for receiving soil materials screened out by the first-stage screening mechanism and the second-stage screening mechanism, the collecting hopper is fixedly connected to the inner side wall of the machine shell, a conveying belt used for conveying the soil materials is arranged below the collecting hopper, and the conveying belt is arranged on a power roller and a supporting roller in a sleeving mode; the power roller is arranged on a vibrating assembly used for knocking the aggregate bin; according to the device, stones are classified and screened, the screened soil materials and the stones are screened to different positions, and the screening efficiency is improved; when the device works continuously, the vibrating mechanism in the device knocks the collecting hopper, the falling speed of soil materials is increased, and excessive soil materials are prevented from being accumulated in the collecting hopper.

Description

Technical Field

[0001] The utility model relates to the technical field of stone screening, in particular to a multi-stage screening device for mountain stones. Background Art

[0002] Stone refers to processed rock products used as materials. Stone is used as coarse aggregate and fine aggregate in the form of crushed stone and sand in large quantities in the concrete construction industry. Stone is used as filler and mixing material in the road construction industry. It is also used in large quantities in road cushions, base layers, surface layers, etc. In a broad sense, aggregates and mineral processed ores are all stone. Therefore, the stone crushing and screening technology is currently widely used in the production lines of powders, minerals, granular materials, aggregates, etc. in the mining, metallurgy, chemical industry, casting, building materials, water conservancy and hydropower, transportation construction and other industries.

[0003] After the large stones are picked up by excavators at the quarry, the remaining crushed stones are mixed with a lot of soil. This part of the quarried stones has a large soil content and can be used as neither earth backfill nor stone backfill. The remaining stones need to be screened, and the stones of the same size need to be classified and screened out, and then the classified and screened stones can be used for different purposes. The currently commonly used screening method is to pass the quarried stones through an oblique screen, which is inefficient and has a poor soil and stone separation effect.

[0004] Chinese patent CN202320512026.9 discloses "New type of vibrating screen with controllable discharge amount of sand and gravel in mines", publication number CN219723693U, the device includes a support seat, a screen assembly, a discharge hopper, a vibration assembly and a discharge assembly; the screen assembly is arranged on the support seat, the screen assembly includes a screen frame and a screen, the screen is arranged in the screen frame, and the screen frame is connected to the support seat through multiple vertical shock-absorbing springs; the discharge hopper is arranged on the screen frame, and the discharge hopper extends downward along one side of the support seat, and is used to discharge the sand and gravel after being screened by the screen; the vibration assembly includes a vibration motor and a fixed frame, the vibration motor is installed on the fixed frame, and the fixed frame is connected to the screen frame; the discharge assembly is arranged above the screen assembly, and is used to transport the sand and gravel raw materials to the screen. However, there are some defects in this device: the device needs to be equipped with an additional vibration motor to vibrate the screen, which increases the manufacturing cost. Utility Model Content

[0005] In order to solve the above problems of the prior art, the utility model provides a multi-stage screening device for mountain stone materials, which can classify and screen the stone materials, and screen the screened soil and stone materials to different positions, thereby improving the screening efficiency.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a multi-stage screening device for mountain quarrying stone, comprising a casing, a feed hopper fixedly connected to the casing, a primary screening mechanism for screening large-particle crushed stone, a secondary screening mechanism for screening small-particle crushed stone, and a collecting hopper arranged below the secondary screening mechanism, the collecting hopper is used to receive soil materials screened out by the primary screening mechanism and the secondary screening mechanism, the collecting hopper is fixedly connected to the inner side wall of the casing, a conveyor belt for transmitting soil materials is arranged below the collecting hopper, the conveyor belt is sleeved on a power roller and a support roller, and the power roller is arranged on a vibrating assembly for striking the collecting hopper.

[0007] With the above structural design, the stones are sequentially passed through the primary screening mechanism and the secondary screening mechanism to screen out stones of different specifications, and soil mixed in the stones is screened out.

[0008] Preferably, the primary screening mechanism comprises a plurality of rollers rotatably connected to the casing, the rollers are arranged at equal intervals, and the arrangement direction of the rollers is inclined.

[0009] With the above structural design, when the stone passes through the primary screening mechanism, the crushed stone and soil that do not meet the screening specifications of the primary screening mechanism fall between the rollers, and the stone that meets the specifications is transported to the outlet under the rotation of the rollers.

[0010] Preferably, the secondary screening mechanism comprises a power roller and a support roller rotatably connected to the casing, and a conveyor belt sleeved on the power roller and the support roller, wherein sieve holes are provided on the conveyor belt.

[0011] With the above structural design, soil leaks out from the sieve holes into the collecting hopper, and the stone material screened for the second time is transported to the discharge port by the conveyor belt.

[0012] Preferably, the vibrating assembly includes a crank fixedly connected to the power roller, a connecting rod rotatably connected to the crank, a piston rotatably connected to the connecting rod, and a first vibrating rod fixedly connected to the piston, the piston is slidably connected to a sliding plate, and the sliding plate is fixedly connected to the inner wall of the casing.

[0013] With the above structural design, when the power roller rotates, it drives the crank to rotate together, and the connecting rod on the crank pushes the piston to reciprocate. The first vibrating rod on the piston will continuously hit the collecting hopper, accelerating the falling speed of the soil and preventing the falling soil from pushing on the inner wall of the collecting hopper.

[0014] Preferably, the vibrating assembly includes a half gear fixedly connected to the power roller, a rack symmetrically meshed on the half gear, a rack frame fixedly connected to the rack, and a second vibrating rod fixedly connected to the rack frame, wherein the second vibrating rod is inserted into a stabilizing cylinder, and the stabilizing cylinder is fixedly connected to the casing.

[0015] With the above structural design, when the power roller rotates, it drives the half gear to rotate, and the rotation of the half gear drives the racks on both sides of the half gear up and down, thereby realizing the reciprocating motion of the rack frame, and then the second vibrating rod strikes the aggregate hopper, accelerating the falling speed of the soil and preventing the falling soil from pushing on the inner wall of the aggregate hopper.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1) The stones are classified and screened, and the screened soil and stones are separated to different locations, thereby improving the screening efficiency.

[0018] 2) When the device is working continuously, the vibrating mechanism should not hit the aggregate hopper, which will accelerate the falling speed of the soil and prevent excessive soil from accumulating inside the aggregate hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the interior front view of the utility model;

[0020] Figure 2 For this utility model Figure 1 A is a schematic diagram of the structure of the first embodiment from the left;

[0021] Figure 3 For this utility model Figure 1 A is a schematic diagram of the structure of the second embodiment from the left; DETAILED DESCRIPTION

[0022] Embodiment 1

[0023] See also Figure 1 , Figure 2 The utility model provides a technical solution: a multi-stage screening device for mountain stone materials, comprising a casing 1, a feed hopper 11 fixedly connected to the casing 1, a primary screening mechanism for screening large-particle crushed stone, a secondary screening mechanism for screening small-particle crushed stone, and a collecting hopper 2 arranged below the secondary screening mechanism, the collecting hopper 2 is used to receive the soil materials screened out by the primary screening mechanism and the secondary screening mechanism, the collecting hopper 2 is fixedly connected to the inner side wall of the casing 1, a conveyor belt 31 for transmitting soil materials is arranged below the collecting hopper 2, the conveyor belt 31 is sleeved on a power roller 32 and a support roller 33, and the power roller 32 is arranged to knock the upper part of the vibrating component of the collecting hopper 2.

[0024] The primary screening mechanism includes a plurality of rollers 41 rotatably connected to the housing 1 , the rollers 41 are arranged at equal intervals, and the arrangement direction of the rollers 41 is inclined.

[0025] The secondary screening mechanism includes a power roller 51 and a support roller 52 rotatably connected to the casing 1 , and a conveyor belt 53 sleeved on the power roller 51 and the support roller 52 , wherein the conveyor belt 53 is provided with screening holes.

[0026] The conveying directions of the primary screening mechanism and the secondary screening mechanism are opposite. The primary screening mechanism conveys to the right. The stones screened by the primary screening mechanism are output from the right end, and the stones screened by the secondary screening mechanism are output from the left end, so that stones of different specifications are transported to different locations.

[0027] The output ends of the primary screening mechanism and the secondary screening mechanism are both provided with inclined plate assemblies, which include an inclined plate 81 hinged on the outer wall of the casing 1, an inclined support rod 82 hinged on the inner wall of the inclined plate 81, and a slot 83 fixedly connected to the casing wall of the casing 1 to match the inclined support rod 82. When the staff places a loading cart under the inclined plate 81, the stone can smoothly fall to the loading cart through the inclined plate 81, avoiding the stone falling outside the loading cart.

[0028] The vibrating assembly includes a crank 61 fixedly connected to the power roller 32, a connecting rod 62 rotatably connected to the crank 61, a piston 63 rotatably connected to the connecting rod 62, and a first vibrating rod 64 fixedly connected to the piston 63. The piston 63 is slidably connected to a sliding plate 65, and the sliding plate 65 is fixedly connected to the inner wall of the casing 1.

[0029] When the device is in use, the staff feeds the stone from the feed hopper 11 into the interior of the device. When the stone passes through the primary screening mechanism, the crushed stone and soil material that do not meet the screening specifications of the primary screening mechanism fall from between the rollers 41, and the stone material that meets the specifications is transported to the right end under the rotation of the rollers 41; the crushed stone and soil material that do not meet the screening specifications of the primary screening mechanism enter the secondary screening mechanism, and the soil material leaks out from the sieve holes and enters the collecting hopper. The stone material screened for the second time is transported to the discharge port at the left end by the conveyor belt 53; the soil material falls into the collecting hopper 2, and falls from the lower end of the collecting hopper 2 onto the conveyor belt 31, and is sent out through the conveyor belt 31. When the power roller 32 rotates, it drives the crank 61 to rotate together, and the connecting rod 62 on the crank 61 pushes the piston 63 to do reciprocating motion. The first vibrating rod 64 on the piston 63 will continuously knock the collecting hopper 2, accelerate the falling speed of the soil material, and prevent the falling soil material from pushing on the inner wall of the collecting hopper.

[0030] Embodiment 2

[0031] like Figure 1 , Figure 3As shown, Example 3 is modified relative to Example 2, and the vibration assembly includes a half gear 71 fixedly connected to the power roller 32, a rack 72 symmetrically meshed on the half gear 71, a rack frame 73 fixedly connected to the rack 72, and a second vibration rod 74 fixedly connected to the rack frame 73, the second vibration rod 74 is inserted into a stabilizing cylinder 75, and the stabilizing cylinder 75 is fixedly connected to the casing 1, and the rest is in accordance with Example 2.

[0032] There are two racks 72 and they are symmetrically arranged on both sides of the half gear 71. When the half gear 71 rotates and meshes with the right rack, it drives the right rack to move upward, thereby driving the rack frame 73 to move upward. The half gear 71 continues to rotate and meshes with the left rack instead of the right rack, thereby driving the left rack to move downward, thereby driving the rack frame 73 to move downward. The half gear 71 rotates continuously and the rack frame 73 performs reciprocating motion.

[0033] When the device is in use, the staff feeds the stone from the feed hopper 11 into the interior of the device. When the stone passes through the primary screening mechanism, the crushed stone and soil material that do not meet the screening specifications of the primary screening mechanism fall from between the rollers 41, and the stone material that meets the specifications is transported to the right end under the rotation of the rollers 41; the crushed stone and soil material that do not meet the screening specifications of the primary screening mechanism enter the secondary screening mechanism, and the soil material leaks out from the sieve holes and enters the collecting hopper. The stone material screened for the second time is transported to the discharge port at the left end by the conveyor belt 53; the soil material falls into the collecting hopper 2, and falls from the lower end of the collecting hopper 2 onto the conveyor belt 31, and is sent out through the conveyor belt 31. When the power roller 32 rotates, it drives the half gear 71 to rotate together, and the rack 72 symmetrically meshed on the half gear 71 drives the rack frame 73 to reciprocate, thereby driving the second vibrating rod 74 fixedly connected to the rack frame 73 to knock the collecting hopper 2, thereby accelerating the falling speed of the soil material and preventing the falling soil material from being pushed on the inner wall of the collecting hopper.

[0034] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effect and purpose that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0035] The present invention is described above with reference to the preferred embodiments, but the protection scope of the present invention is not limited thereto, and all technical solutions falling within the scope of the claims are within the protection scope of the present invention. Various improvements may be made to the present invention and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A multi-stage screening device for mountain stone materials, comprising a housing (1) and a feed hopper (11) fixedly connected to the housing (1), characterized in that: The casing (1) is provided with a primary screening mechanism for screening large-particle crushed stone, a secondary screening mechanism for screening small-particle crushed stone, and a collecting hopper (2) arranged below the secondary screening mechanism. The collecting hopper (2) is used to receive soil materials screened out by the primary screening mechanism and the secondary screening mechanism. The collecting hopper (2) is fixedly connected to the inner side wall of the casing (1). A conveyor belt (31) for transmitting soil materials is arranged below the collecting hopper (2). The conveyor belt (31) is sleeved on a power roller (32) and a support roller (33). The power roller (32) is arranged on a vibrating assembly for striking the collecting hopper (2).

2. A multi-stage screening device for mountain stone materials according to claim 1, characterized in that: The primary screening mechanism comprises a plurality of rollers (41) rotatably connected to the casing (1); the rollers (41) are arranged at equal intervals, and the arrangement direction of the rollers (41) is inclined.

3. The multi-stage screening device for mountain stone materials according to claim 1, characterized in that: The secondary screening mechanism comprises a power roller (51) and a support roller (52) rotatably connected to the housing (1), and a conveyor belt (53) sleeved on the power roller (51) and the support roller (52), wherein the conveyor belt (53) is provided with screening holes.

4. The multi-stage screening device for mountain stone materials according to claim 1, characterized in that: The vibration assembly comprises a crank (61) fixedly connected to the power roller (32), a connecting rod (62) rotatably connected to the crank (61), a piston (63) rotatably connected to the connecting rod (62), and a first vibration rod (64) fixedly connected to the piston (63); the piston (63) is slidably connected to a sliding plate (65); and the sliding plate (65) is fixedly connected to the inner wall of the casing (1).

5. The multi-stage screening device for mountain stone materials according to claim 1, characterized in that: The vibrating assembly comprises a half gear (71) fixedly connected to the power roller (32), a rack (72) symmetrically meshed with the half gear (71), a rack frame (73) fixedly connected to the rack (72), and a second vibrating rod (74) fixedly connected to the rack frame (73); the second vibrating rod (74) is inserted into a stabilizing cylinder (75); and the stabilizing cylinder (75) is fixedly connected to the housing (1).

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