A sandstone crushing device

Abstract

The utility model relates to sandstone material crushing technical field, and disclose a sandstone material crushing device, including the crushing box, the top of crushing box is provided with a primary crushing mechanism, the inside of crushing box is provided with secondary crushing mechanism, the inside of crushing box is provided with screening mechanism, the primary crushing mechanism includes the feed inlet of being opened in the top of crushing box, the top of feed inlet is equipped with two symmetrical distribution's baffle, the top of crushing box is provided with two groups of symmetrical distribution's interval adjusting assembly. The utility model discloses through setting up primary crushing mechanism can pre - extrude crushing to too big material, and can control the granularity of material that enters secondary crushing through interval adjusting assembly, through having the double roll type secondary crushing mechanism of staggered crushing tooth, the crushing effect is full, and the efficiency is high, and the granularity of material after once crushing pretreatment is more even, is favorable to secondary crushing mechanism high -efficient work, greatly improved the practicality of crushing device.

Description

Technical Field

[0001] This utility model relates to the field of sand and gravel crushing technology, and in particular to a sand and gravel crushing device. Background Technology

[0002] Due to its good hardness and stable chemical properties, sand and gravel are often used as high-quality building materials and concrete raw materials in housing, roads, highways, railways and other fields.

[0003] According to Chinese Patent Publication No. CN222093482U, a sand and gravel crushing device is proposed. It comprises a rotating block, connecting rod, U-shaped frame, disc, sliding rod, distribution plate, second filter plate, and T-shaped slider. The distribution plate distributes the crushed stone, causing large pieces to fall to the left side of the crushing chamber and smaller pieces to roll to the right from the second filter plate. After the dual-head motor is started, it drives the disc and rotating block to rotate, causing the U-shaped frame, connecting rod, and sliding rod to move up and down, resulting in vibration of the distribution plate and second filter plate, which facilitates the movement of the device. Discharge: By setting up crushing rollers, a feed hopper, springs, baffles, a rotating shaft, a dual-head motor, and gears, the dual-head motor is started, and the gears drive the rotating shaft to rotate, causing the crushing rollers to crush the stone. The spring force causes the baffle to block the feed hopper, reducing the upward emission of dust. By setting up a water pump, a U-shaped pipe, nozzles, a first filter plate, and an installation frame, the water pump is started to extract water from inside the crushing shell and spray it out from the nozzles to reduce dust during the stone crushing process. The top surface of the filter plate can be cleaned by pulling out the installation frame to the left.

[0004] According to the existing technology, the single-stage crushing method used in crushing sand and gravel results in poor crushing effect, making it difficult to obtain finished products with ideal particle size in one go. Therefore, the finished products need to be filtered and crushed repeatedly, which affects the crushing efficiency. Therefore, a sand and gravel crushing device is proposed to solve the above problems. Utility Model Content

[0005] (a) Purpose of the utility model To address the technical problems existing in the background art, this utility model proposes a sand and gravel crushing device, which can pre-crush excessively large materials by setting a primary crushing mechanism, and has the advantages of improving the crushing efficiency of sand and gravel.

[0006] (II) Technical Solution This utility model provides a sand and gravel crushing device, including a crushing box, a primary crushing mechanism on the top of the crushing box, a secondary crushing mechanism inside the crushing box, and a screening mechanism inside the crushing box.

[0007] The primary crushing mechanism includes a feed inlet located at the top of the crushing chamber. Two symmetrically distributed baffles are installed at the top of the feed inlet. Two sets of symmetrically distributed spacing adjustment components are provided at the top of the crushing chamber. Two movable plates are provided between opposite sides of the two baffles. The two sets of spacing adjustment components are respectively connected to the two movable plates to adjust the spacing between the two movable plates.

[0008] The primary crushing mechanism also includes an extrusion plate rotatably connected to the opposite side of the two baffles. Each of the two extrusion plates has multiple extrusion teeth on its opposite side. Each of the two movable plates has an L-shaped plate on its top. Each of the two L-shaped plates has an electric push rod hinged to its top by a pin. The piston rods of the two electric push rods are respectively hinged to the opposite side of the two extrusion plates by a pin.

[0009] Preferably, each of the two baffles has a rotating groove on its opposite side, and a rotating shaft is rotatably connected inside each of the two rotating grooves. The two extrusion plates are respectively located on the outside of the two rotating shafts.

[0010] Preferably, the spacing adjustment assembly includes a fixed frame located on the top of the crushing box, the movable plate being slidably connected to the inside of the fixed frame, threaded grooves being provided on opposite sides of the two movable plates, and threaded rods extending into the corresponding threaded grooves being rotatably connected to opposite sides of the two fixed frames via bearings, the threaded rods being threadedly connected to the corresponding threaded grooves, and handwheels being provided at opposite ends of the two threaded rods.

[0011] Preferably, the secondary crushing mechanism includes a drive box located on the left side of the crushing box. Two rotating rods extending into the drive box are rotatably connected to the right side wall of the inner cavity of the crushing box. Crushing rollers located inside the crushing box are provided on the outer side of each of the two rotating rods. The crushing teeth on the outer side of the two crushing rollers are staggered. Gears located inside the drive box and meshing with each other are provided on the outer side of each of the two rotating rods. A first reduction motor is provided on the outer side of the drive box. The output shaft of the first reduction motor is connected to one of the rotating rods.

[0012] Preferably, the screening mechanism includes a discharge port located on the front of the crushing box and extending into its interior. A screening plate extending into the discharge port is rotatably connected to the inner side of the crushing box. The end of the screening plate near the discharge port is inclined downward. A shaking component is provided on the front of the crushing box for driving the screening plate to shake.

[0013] Preferably, the shaking assembly includes a mounting plate disposed on the front of the crushing box, a second reduction motor is provided on the top of the mounting plate, an eccentric wheel is provided on the output shaft of the second reduction motor, and the outer side of the eccentric wheel abuts against the bottom of the screening plate.

[0014] Preferably, the bottom of the crushing box is connected to a discharge funnel, and support seats are provided on both the left and right sides of the crushing box. A PCL control box is provided on the right side of the crushing box.

[0015] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects: This sand and gravel crushing device can pre-crush excessively large materials by setting a primary crushing mechanism, and the particle size of the material entering the secondary crushing can be controlled by the spacing adjustment component. Through the double-roller secondary crushing mechanism with staggered crushing teeth, the crushing effect is sufficient and efficient. The particle size of the material after the primary crushing pretreatment is more uniform, which is conducive to the efficient operation of the secondary crushing mechanism and greatly improves the practicality of the crushing device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a sand and gravel crushing device proposed in this utility model.

[0017] Figure 2 This is a cross-sectional view of the crushing box and primary crushing mechanism in a sand and gravel crushing device proposed in this utility model.

[0018] Figure 3 This is an exploded view of the spacing adjustment component and the movable plate in a sand and gravel crushing device proposed in this utility model.

[0019] Figure 4 This is a cross-sectional view of the crushing box and secondary crushing mechanism in a sand and gravel crushing device proposed in this utility model.

[0020] Figure 5 This is a cross-sectional view of the crushing box, screening mechanism, and discharge hopper in a sand and gravel crushing device proposed in this utility model.

[0021] Reference numerals: 1. Crushing box; 2. Primary crushing mechanism; 21. Baffle; 22. Spacing adjustment component; 221. Fixed frame; 222. Threaded groove; 223. Threaded rod; 224. Handwheel; 23. Movable plate; 24. Extrusion plate; 25. Extrusion teeth; 26. L-shaped plate; 27. Electric push rod; 3. Secondary crushing mechanism; 31. Drive box; 32. Rotating rod; 33. Crushing roller; 34. Gear; 35. First geared motor; 4. Screening mechanism; 41. Discharge port; 42. Screening plate; 43. Vibration component; 5. Discharge funnel; 6. Support base; 7. PCL control box. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, such as welding, riveting, or bonding; it can also be a detachable connection, such as threaded connection, keyed connection, or pin connection; or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; or it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] like Figure 1-5 As shown, the present invention proposes a sand and gravel crushing device, including a crushing box 1, a primary crushing mechanism 2 on the top of the crushing box 1, a secondary crushing mechanism 3 inside the crushing box 1, and a screening mechanism 4 inside the crushing box 1.

[0026] In this invention, the materials are all sand and gravel. The primary crushing mechanism 2 can pre-crush excessively large materials by compression and control the particle size of the materials entering the secondary crushing mechanism 3, effectively avoiding material jamming and impact damage in the secondary crushing mechanism 3. The secondary crushing mechanism 3 can fully crush the pre-treated materials. The crushing of the pre-treated materials by the secondary crushing mechanism 3 makes the secondary crushing mechanism 3 more thorough and efficient.

[0027] After crushing is completed, the crushed material will be screened by screening mechanism 4. Qualified material will be discharged directly, while unqualified material can be collected and returned for re-crushing.

[0028] In Embodiment 1, the primary crushing mechanism 2 includes a feed inlet located at the top of the crushing box 1. Two symmetrically distributed baffles 21 are installed at the top of the feed inlet. Two sets of symmetrically distributed spacing adjustment components 22 are provided at the top of the crushing box 1. Two movable plates 23 are provided between the opposite sides of the two baffles 21. The two sets of spacing adjustment components 22 are respectively connected to the two movable plates 23 to adjust the spacing between the two movable plates 23.

[0029] The two baffles 21 can respectively block the front and back of the two movable plates 23, while the two sets of spacing adjustment components 22 can adjust the spacing between the two movable plates 23 on opposite sides.

[0030] The primary crushing mechanism 2 also includes a pressing plate 24 rotatably connected to the opposite side of the two baffles 21. Each of the two pressing plates 24 has multiple pressing teeth 25 on its opposite side. Each of the two movable plates 23 has an L-shaped plate 26 on its top. Each of the two L-shaped plates 26 has an electric push rod 27 hinged to its top by a pin. The piston rods of the two electric push rods 27 are respectively hinged to the opposite side of the two pressing plates 24 by a pin.

[0031] When materials are added, under the action of the two baffles 21, the materials will fall between the two extrusion plates 24 on opposite sides. Materials smaller than the distance between the two movable plates 23 on opposite sides will fall directly into the secondary crushing mechanism 3, while materials larger than the distance between the two movable plates 23 on opposite sides will remain between the two extrusion plates 24 on opposite sides.

[0032] Two baffles 21 are provided with rotating grooves on opposite sides, and rotating shafts are rotatably connected inside the two rotating grooves. Two extrusion plates 24 are respectively located on the outside of the two rotating shafts. When the two electric push rods 27 are activated, the piston rods of the two electric push rods 27 will drive the two extrusion plates 24 to flip to opposite sides under the action of the pins. This causes the two extrusion plates 24 to crush the material on opposite sides through multiple extrusion teeth 25, so that larger materials are crushed and fall into the secondary crushing mechanism 3 through the gap between the two movable plates 23 on opposite sides, thus completing the pre-processing of the material.

[0033] The distance between the two movable plates 23 on opposite sides can be adjusted by using two sets of spacing adjustment components 22, thereby adjusting the maximum allowable material size.

[0034] In embodiment 2, the spacing adjustment component 22 includes a fixed frame 221 located on the top of the crushing box 1, and movable plates 23 slidably connected to the inside of the fixed frame 221. Threaded grooves 222 are provided on opposite sides of the two movable plates 23. Threaded rods 223 extending into the corresponding threaded grooves 222 are rotatably connected to opposite sides of the two fixed frames 221 via bearings. The threaded rods 223 are threadedly connected to the corresponding threaded grooves 222. Handwheels 224 are provided at opposite ends of the two threaded rods 223.

[0035] According to the maximum allowable material size, the operator can turn the handwheel 224, which drives the threaded rod 223 to rotate. Since the threaded rod 223 engages with the threaded groove 222 on the movable plate 23 and the movable plate 23 is restricted to slide within the fixed frame 221, the two movable plates 23 are driven to move towards or away from each other, adjusting the gap between them to achieve the purpose of adjusting the maximum allowable material size.

[0036] In embodiment 3, the secondary crushing mechanism 3 includes a drive box 31 located on the left side of the crushing box 1. Two rotating rods 32 extending into the drive box 31 are rotatably connected to the right side wall of the inner cavity of the crushing box 1. Crushing rollers 33 located inside the crushing box 1 are provided on the outer side of each of the two rotating rods 32. The crushing teeth on the outer side of the two crushing rollers 33 are staggered. Gears 34 located inside the drive box 31 and meshing with each other are provided on the outer side of each of the two rotating rods 32. A first reduction motor 35 is provided on the outer side of the drive box 31. The output shaft of the first reduction motor 35 is connected to one of the rotating rods 32.

[0037] After primary crushing, the material falls into the secondary crushing mechanism 3 below. At the same time, the first reduction motor 35 starts, and through the meshing gears 34, it drives the two rotating rods 32 to rotate in opposite directions, thereby driving the two crushing rollers 33 to rotate in opposite directions. The crushing teeth on the crushing rollers 33 are staggered to further crush and shear the material, making it crushed into smaller particle sizes.

[0038] In embodiment four, the screening mechanism 4 includes a discharge port 41 opened on the front of the crushing box 1 and extending into its interior. A screening plate 42 extending into the discharge port 41 is rotatably connected to the inner side of the crushing box 1. The end of the screening plate 42 near the discharge port 41 is inclined downward. A shaking component 43 is provided on the front of the crushing box 1 for driving the screening plate 42 to shake.

[0039] The material crushed by the crushing roller 33 will fall onto the screening plate 42 and be screened by the screening plate 42.

[0040] The shaking assembly 43 includes a mounting plate located on the front of the crushing box 1. A second reduction motor is located on the top of the mounting plate. An eccentric wheel is located on the output shaft of the second reduction motor. The outer side of the eccentric wheel abuts against the bottom of the screening plate 42. When the second reduction motor is started, it drives the eccentric wheel to rotate continuously, constantly impacting the screening plate 42 to generate high-frequency shaking. Material with qualified particle size passes through the screen holes of the screening plate 42, while material with unqualified particle size slides down the inclined screening plate 42, making it easy to collect the unqualified material and return it for re-crushing.

[0041] In Example 5, the bottom of the crushing box 1 is connected to the discharge hopper 5, and the left and right sides of the crushing box 1 are provided with support seats 6. The right side of the crushing box 1 is provided with a PCL control box 7.

[0042] The discharge funnel 5 facilitates the discharge of materials with qualified particle size, while the support base 6 supports and places the crushing box 1. The electric push rod 27, the first geared motor 35 and the second geared motor are all electrically connected to the PCL control box 7, which can control the electric push rod 27, the first geared motor 35 and the second geared motor.

[0043] It should be noted that the two electric push rods 27 are electrically connected to the PCL control box 7 in parallel to ensure that the two electric push rods 27 can move synchronously. Under the driving action of the electric push rods 27, the maximum stroke of the two extrusion plates 24 flipping to the opposite side is such that the two extrusion plates 24 are in a vertical state, so that the two extrusion plates 24 can fully extrude and pre-treat the material.

[0044] In Example 6, a water spraying dust suppression mechanism is provided on the top of the crushing box 1. The water spraying dust suppression mechanism includes a water tank, a water pump and several nozzles. The nozzles are connected to the water tank and the water pump through pipes. The nozzles are located on the outer side above the primary crushing mechanism 2, so that the nozzles are set towards the inside of the primary crushing mechanism 2 without affecting the feeding inside the primary crushing mechanism 2. This makes it easy for the nozzles to spray water into the crushing device to reduce dust. A water flow regulating valve is provided on the pipe, and the water flow regulating valve can control the amount of water sprayed.

[0045] In Example 7, the inner top wall of the crushing box 1 is provided with two guide plates. The tops of the two guide plates are located on both sides of the feed inlet, and the bottoms of the two guide plates are located above the two crushing rollers 33. The two guide plates can guide the pre-treated material so that the pre-treated material falls stably between the two crushing rollers 33.

[0046] Working principle: In operation, this sand and gravel crushing device allows the operator to adjust the gap between the two movable plates 23 by turning the handwheel 224, based on the maximum allowable material size. Material is then added, and under the action of the two baffles 21, it falls between the two opposing sides of the compression plates 24. Material smaller than the maximum size falls directly into the secondary crushing mechanism 3, while material larger than the maximum size remains between the two compression plates 24. At this time, the PCL control box 7 controls the synchronous action of the two electric push rods 27. The piston rods of the electric push rods 27 extend and retract, pushing the compression plates 24 to rotate around the shaft, causing the two compression plates 24 with compression teeth 25 to compress large pieces of material located below the gap between the movable plates 23. The material is compressed and crushed to complete the pretreatment. The pretreated material falls directly into the secondary crushing mechanism 3. The first reduction motor 35 is started, which makes the two crushing rollers 33 rotate. The crushing teeth on the crushing rollers 33 are staggered to further crush and shear the material, making it smaller in particle size. Finally, the crushed material falls onto the screening plate 42. The second reduction motor is started, which makes the eccentric wheel rotate continuously. The continuous rotation of the eccentric wheel continuously impacts the screening plate 42, making it vibrate at high frequency. The material with qualified particle size passes through the screen holes of the screening plate 42 and is discharged through the discharge funnel 5, while the material with unqualified particle size slides down the inclined screening plate 42, which is convenient for the unqualified material to be collected and returned for re-crushing.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sand and gravel crushing device, comprising a crushing box (1), characterized in that, The crushing box (1) is provided with a primary crushing mechanism (2) on the top, a secondary crushing mechanism (3) is provided inside the crushing box (1), and a screening mechanism (4) is provided inside the crushing box (1). The primary crushing mechanism (2) includes a feed inlet at the top of the crushing box (1). Two symmetrically distributed baffles (21) are installed at the top of the feed inlet. Two sets of symmetrically distributed spacing adjustment components (22) are provided at the top of the crushing box (1). Two movable plates (23) are provided between the opposite sides of the two baffles (21). The two sets of spacing adjustment components (22) are respectively connected to the two movable plates (23) to adjust the spacing between the two movable plates (23). The primary crushing mechanism (2) further includes a pressing plate (24) rotatably connected to the opposite side of the two baffles (21). Each of the two pressing plates (24) has a plurality of pressing teeth (25) on its opposite side. Each of the two movable plates (23) has an L-shaped plate (26) on its top. Each of the two L-shaped plates (26) has an electric push rod (27) hinged to its top by a pin. The piston rods of the two electric push rods (27) are respectively hinged to the opposite side of the two pressing plates (24) by a pin.

2. The sand and gravel crushing device according to claim 1, characterized in that, The two baffles (21) are provided with rotating grooves on opposite sides, and rotating shafts are rotatably connected inside the two rotating grooves. The two extrusion plates (24) are respectively located on the outside of the two rotating shafts.

3. The sand and gravel crushing device according to claim 1, characterized in that, The spacing adjustment assembly (22) includes a fixed frame (221) located on the top of the crushing box (1). The movable plate (23) is slidably connected to the inside of the fixed frame (221). Threaded grooves (222) are provided on opposite sides of the two movable plates (23). Threaded rods (223) extending into the corresponding threaded grooves (222) are rotatably connected to opposite sides of the two fixed frames (221) via bearings. The threaded rods (223) are threadedly connected to the corresponding threaded grooves (222). Handwheels (224) are provided at opposite ends of the two threaded rods (223).

4. The sand and gravel crushing device according to claim 1, characterized in that, The secondary crushing mechanism (3) includes a drive box (31) located on the left side of the crushing box (1). Two rotating rods (32) extending into the drive box (31) are rotatably connected to the right side wall of the inner cavity of the crushing box (1). Crushing rollers (33) located inside the crushing box (1) are provided on the outer side of the two rotating rods (32). The crushing teeth on the outer side of the two crushing rollers (33) are staggered. Gears (34) located inside the drive box (31) and meshing with each other are provided on the outer side of the two rotating rods (32). A first reduction motor (35) is provided on the outer side of the drive box (31). The output shaft of the first reduction motor (35) is connected to one of the rotating rods (32).

5. The sand and gravel crushing device according to claim 1, characterized in that, The screening mechanism (4) includes a discharge port (41) located on the front of the crushing box (1) and extending into its interior. The inner side of the crushing box (1) is rotatably connected to a screening plate (42) extending into the discharge port (41). The end of the screening plate (42) near the discharge port (41) is inclined downward. The front of the crushing box (1) is provided with a shaking component (43) for driving the screening plate (42) to shake.

6. The sand and gravel crushing device according to claim 5, characterized in that, The shaking component (43) includes a mounting plate located on the front of the crushing box (1). A second reduction motor is provided on the top of the mounting plate. An eccentric wheel is provided on the output shaft of the second reduction motor. The outer side of the eccentric wheel abuts against the bottom of the screening plate (42).

7. The sand and gravel crushing device according to claim 1, characterized in that, The bottom of the crushing box (1) is connected to the discharge funnel (5), and the left and right sides of the crushing box (1) are provided with support seats (6). The right side of the crushing box (1) is provided with a PCL control box (7).

Images