Concrete stone screening device

Abstract

The invention discloses a concrete stone screening device, and relates to the technical field of screening devices. The screening device comprises a mounting frame, a mounting shell is mounted on the mounting frame, a screening shell is rotationally mounted in the mounting shell, the section of the mounting shell is circular, the rotating point of the screening shell and the circle center of the section of the mounting shell share the same point, a first screen and a second screen are mounted in the screening shell, and screen holes in the first screen are larger than screen holes in the second screen. The screening shell is rotatably mounted in the mounting shell, during use, a pushing rod slides to abut against a protruding block, when the pushing rod abuts against the protruding block, the screening shell swings to shake and screen stone located on a first screen, and while the screening shell is driven to swing, the pushing rod abuts against an inclined plate, so that the screening effect is improved. Through the arrangement of the inclined plates, when stone enters the mounting shell, the inclined plates get close to each other to clamp the stone passing through the feeding port, the stone bonded by soil is clamped open, subsequent screening is facilitated, and the screening effect of the device is improved.

Description

Technical Field

[0001] The present application relates to the technical field of screening devices, and in particular to a concrete stone screening device. Background Art

[0002] Concrete is a composite material consisting of fine and coarse aggregates bonded together with a flowable cement (cement paste) that hardens (cures) over time. The production of concrete often requires the screening of stones.

[0003] In the prior art, stones are screened by a vibrating screen. However, when stones are piled up in a stone factory, the stones near the bottom will come into contact with the soil, causing the soil to bond some fine stones, thereby increasing the diameter of the stone mass. During subsequent screening, this part of the stones will be screened out, but a single fine stone in the stone mass may meet the mixing requirements, resulting in more waste of stones during screening.

[0004] Therefore, the present invention proposes a concrete stone screening device to improve this problem. Summary of the invention

[0005] The purpose of this application is to solve the problems in the above-mentioned background technology, and this application provides a concrete stone screening device.

[0006] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0007] A concrete stone screening device, comprising:

[0008] A mounting frame is mounted on which a mounting shell is mounted, a screening shell is rotatably mounted in the mounting shell, the mounting shell has a circular cross-section, the rotation point of the screening shell is co-centered with the center of the cross-section of the mounting shell, a screen 1 and a screen 2 are mounted in the screening shell, the screen holes on the screen 1 are larger than the screen holes on the screen 2, the position of the screen 1 is higher than the position of the screen 2, a feed port and a discharge port are provided on the mounting shell, and the screening shell is located between the feed port and the discharge port;

[0009] A driving member is mounted on the mounting shell, the driving member comprises a push rod slidably mounted on the mounting shell, a bump is mounted on the screen, when the push rod contacts the bump, the screening shell swings in the mounting shell;

[0010] The crushing clamp is installed on the mounting shell. The crushing clamp includes an inclined plate hinged at the mounting shell. There are two inclined plates, which are symmetrically hinged at the feed port. The inclined plates are used to reduce the diameter of the feed port. A clamping block is installed on the inclined plate. When the push rod contacts the protrusion, it also contacts the inclined plate, forcing the distance between the inclined plates to be reduced.

[0011] Further, the driving member includes a cam rotatably mounted on the mounting shell. A driving motor is mounted on the mounting shell, and the output shaft of the driving motor is connected to the rotating shaft of the cam. A U-shaped pipe is mounted on the mounting shell, and the push rod is slidably mounted in the U-shaped pipe. The other end of the U-shaped pipe is slidably mounted with a抵触 rod through a connecting spring, and the cam is used to抵触 the抵触 rod.

[0012] Further, a抵触 plate is mounted on the inclined plate, and the抵触 plate reduces the distance between the inclined plate and the push rod. A shielding rod is mounted on the mounting shell, and the shielding rod is used to limit the rotation amplitude of the inclined plate.

[0013] Further, a protruding shaft is mounted on the mounting shell. An inner cavity is provided in the protruding shaft. A water outlet communicating with the inner wall of the screening shell is provided on the side wall of the protruding shaft. A piston rod is slidably mounted on the protruding shaft. One end of the piston rod penetrates through the protruding shaft and is located outside the inner cavity. A connecting rod is mounted at the end of the piston rod. A first bevel gear is mounted on the output shaft of the driving motor. A second bevel gear meshing with the first bevel gear is rotatably mounted on the outer wall of the protruding shaft. A driving disc is rotatably mounted on the outer wall of the protruding shaft. The driving disc is connected to the second bevel gear through a belt pulley assembly. An articulated rod is eccentrically hinged on the driving disc, and the articulated rod is hinged to the connecting rod.

[0014] Further, the side wall of the screening shell communicates with the inner wall of the mounting shell. A knocking rod is hinged on the mounting shell. A knocking roller is rotatably mounted on the knocking rod. A抵触 spring is mounted between the knocking rod and the mounting shell.

[0015] Further, an extension plate is mounted on the protruding shaft. A vertical plate is slidably mounted on the extension plate through a pulling spring. A vibrating roller is rotatably mounted on the vertical plate.

[0016] Further, a pressing plate is rotatably mounted in the mounting shell through a torsion spring. A tooth block is mounted on the pressing plate. One end of the pressing plate contacts the bottom of the inclined plate.

[0017] Further, a shielding plate is mounted in the screening shell. The water outlet opens towards the second screen. The shielding plate is used to cover or uncover the water outlet.

[0018] Further, the rotating shaft of the cam penetrates through the mounting shell. A circular plate is mounted on one end of the rotating shaft of the cam located inside the mounting shell. An auxiliary rod is eccentrically mounted on the circular plate.

[0019] Further, a discharge port is provided on one side of the mounting shell. A blocking shell for covering the discharge port is hinged on the mounting shell. The blocking shell is connected to the mounting shell through bolts. A through cavity is provided on the凸块 facing the discharge port. A limiting plate is hinged on the凸块. A threaded sleeve is mounted in the through cavity. A limiting bolt threadedly connected to the threaded sleeve is mounted on the limiting plate.

[0020] The beneficial effects of this application are as follows:

[0021] 1. In this application, a screening shell is rotatably installed inside the installation shell. During use, the sliding of the push rod抵触 the convex block. When the push rod抵触 the convex block, the screening shell swings, shaking and screening the stones located on the first sieve mesh. At the same time as driving the screening shell to swing, the push rod抵触 the inclined plate, causing the inclined plates to approach each other when the stones enter the installation shell, clamping the stones passing through the feed port and separating the stones adhered by mud, facilitating subsequent screening and increasing the screening effect of the device.

[0022] 2. During use of this application, when the cam rotates, its smaller end抵触 one side of the抵触 rod, compressing the air inside the U-shaped pipe on that side, causing the air to push and抵触 the push rod installed inside the U-shaped pipe on that side, which in turn抵触 the convex block. When the cam rotates to解除 the抵触 with the抵触 rod on that side, the connecting spring pulls the抵触 rod to reset. When the cam continues to rotate, it will also抵触 the抵触 rod on the opposite side. This cycle repeats, causing the two push rods to alternately抵触 the convex block, increasing the swinging frequency of the screening shell and enhancing the screening effect on the stones.

[0023] 3. The shielding rod of this application is located on the side of the inclined plate away from the inner wall of the feed port, such that the inclined plate can only rotate in the direction of approaching each other, and the maximum distance between the two inclined plates is the distance between them in the normal state. When the stones are pushed and抵触 by one side of the inclined plate, the inclined plate on the other side will not slide away from the stones. Therefore, when crushing the stones, the inclined plate can rigidly disperse the stones, increasing the practicality of the device.

[0024] 4. During use of this application, water is sprayed into the screening shell through the protruding axis to soften the mud between the stones. Then, with the swinging of the screening shell, the softened stones collide with the inner wall of the screening shell, causing the softened stones to disperse, enabling the smaller stones to be smoothly screened and increasing the screening effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the three-dimensional structure solid diagram of this application;

[0026] Figure 2 is the exploded view of part of the structure of this application;

[0027] Figure 3 is the schematic diagram of the structure on the installation shell of this application;

[0028] Figure 4 is the exploded view of the installation shell structure of this application;

[0029] Figure 5 It is a schematic structural diagram of the driving part of this application;

[0030] Figure 6 It is an exploded view of the structure on the extension plate of this application;

[0031] Figure 7 It is an exploded view of the protruding shaft structure of this application;

[0032] Figure 8 It is an exploded view of the convex block structure of this application;

[0033] Fig. 9 It is this application Figure 3 Stereoscopic sectional view of the structure in;

[0034] Fig.10 It is a stereoscopic sectional view of the installation shell structure of this application;

[0035] Fig.11 It is a stereoscopic sectional view of the installation shell and the screening shell of this application.

[0036] Reference numerals: 1. Installation frame; 101. Installation shell; 102. Screening shell; 103. First sieve mesh; 104. Second sieve mesh; 105. Feed inlet; 106. Discharge outlet; 2. Driving part; 201. Push rod; 202. Convex block; 203. Cam; 204. Driving motor; 205. C-shaped pipe; 206. Contact rod; 207. Connecting spring; 3. Crushing part; 301. Inclined plate; 302. Clamping block; 303. Contact plate; 304. Shielding rod; 4. Protruding shaft; 401. Inner cavity; 402. Water outlet; 403. Piston rod; 404. Connecting rod; 405. First bevel gear; 406. Second bevel gear; 407. Driving disc; 408. Belt pulley assembly; 409. Hinge rod; 5. Knocking rod; 6. Knocking roller; 7. Contact spring; 8. Extension plate; 9. Pulling spring; 10. Vertical plate; 11. Vibration roller; 12. Pressing plate; 13. Tooth block; 14. Shielding plate; 15. Circular plate; 16. Auxiliary rod; 17. Discharge port; 18. Baffle shell; 19. Through cavity; 20. Limiting plate; 21. Threaded sleeve; 22. Limiting bolt. Detailed implementation manners

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application.

[0038] Embodiment 1

[0039] As Figure 1 - Fig.11 shown, a concrete stone screening device proposed in Embodiment 1 of this application includes:

[0040] A mounting frame 1, on which a mounting shell 101 is mounted, a screening shell 102 is rotatably mounted inside the mounting shell 101, the mounting shell 101 has a circular cross-section, the rotation point of the screening shell 102 coincides with the center of the mounting shell 101, and the diameter of the screening shell 102 is consistent with the inner diameter of the mounting shell 101;

[0041] A screen 103 and a screen 2 104 are installed in the screening shell 102. The sieve holes on the screen 103 are larger than the sieve holes of the screen 2 104. The position of the screen 103 is higher than that of the screen 2 104. A feed port 105 and a discharge port 106 are provided on the installation shell 101. The screening shell 102 is located between the feed port 105 and the discharge port 106. When in use, stones are placed into the installation shell 101 from the feed port 105, and the stones are graded and screened by the screening of the screen 103 and the screen 2 104. After screening, the stones are discharged from the discharge port 106 to the outside of the installation shell 101. The position of the installation shell 101 is raised by the mounting frame 1, so that there is a distance between the discharge port 106 and the ground, which is convenient for discharging the stones.

[0042] The driving member 2 is mounted on the mounting shell 101. The driving member 2 includes a push rod 201 slidably mounted on the mounting shell 101. A protrusion 202 is mounted on the screen 103. When the push rod 201 contacts the protrusion 202, the screening shell 102 swings in the mounting shell 101. When the device is in a normal state, the height of the push rod 201 is higher than the screen 103. At this time, the highest point of the protrusion 202 is higher than the lowest point of the push rod 201. There are two push rods 201, which are symmetrically arranged on both sides of the mounting shell 101. When in use, the push rod 201 is slid to make the push rod 201 contact the protrusion 202. At this time, the screening shell 102 swings toward the side that contacts the push rod 201, and the other side swings. When swinging, it is blocked by the rod body of the push rod 201 on the other side. When the push rod 201 on this side slides back to release the resistance to the protrusion 202, the screening shell 102 swings in the resetting direction by inertia. At this time, the push rod 201 on the other side resists the protrusion 202 or the shell of the screening shell 102 on the same side, causing the screening shell 102 to swing to this side, thereby causing the stones on the screen 103 to be screened as the screening shell 102 shakes, and the relatively fine stones are preliminarily screened. The preliminarily screened stones in the screening shell 102 also shake together and are screened again. The stones are further screened and refined through two screenings, thereby increasing the fineness of the stone screening.

[0043] The crushing member 3 is mounted on the mounting shell 101. The crushing member 3 includes an inclined plate 301 hinged at the mounting shell 101. There are two inclined plates 301, which are symmetrically hinged at the feed port 105. The inclined plates 301 are used to reduce the diameter of the feed port 105. A clamping block 302 is installed on the inclined plate 301. When the push rod 201 contacts the protrusion 202, it also contacts the inclined plate 301, forcing the spacing between the inclined plates 301 to decrease. The inclined plate 301 is located above the push rod 201, and the lowest point of the inclined plate 301 is lower than the push rod 201. 01, when in use, when adding stones into the installation shell 101, the push rod 201 is slid so that the push rod 201 contacts the protrusion 202, and at the same time, the push rod 201 contacts the inclined plate 301, so that the side inclined plate 301 rotates toward the opposite side inclined plate 301, thereby reducing the gap between the two inclined plates 301, and the end of the clamping block 302 is a pointed end. When the two inclined plates 301 are close to each other, the inclined plate 301 clamps and contacts the stones through the clamping block 302, and the larger stone mass is clamped and dispersed;

[0044] Since the stones are bonded together by the soil, the force applied between the inclined plates 301 is sufficient to disperse the soil, thereby increasing the feasibility of the device.

[0045] Compared with the prior art, a screening shell 102 is rotatably installed in the mounting shell 101. When in use, the protrusion 202 is abutted by the sliding of the push rod 201. When the push rod 201 abuts against the protrusion 202, the screening shell 102 swings, and the stones on the screen 103 are shaken and screened. While driving the screening shell 102 to swing, the push rod 201 abuts against the inclined plate 301, so that when the stones enter the mounting shell 101, the inclined plates 301 approach each other to clamp the stones passing through the feed port 105, and clamp the stones bonded by soil, which is convenient for subsequent screening, thereby increasing the screening effect of the device.

[0046] Embodiment 2

[0047] like Figure 3 and Figure 5 As shown, the second embodiment further discloses the driving member 2, the crushing member 3 and the mounting shell 101 on the basis of the first embodiment. In the second embodiment, the driving member 2 includes a cam 203 rotatably mounted on the mounting shell 101, and a driving motor 204 is mounted on the mounting shell 101. The output shaft of the driving motor 204 is connected to the rotating shaft of the cam 203. The rotating shaft of the cam 203 is located at the center of the larger end of the cam 203, so that when the driving motor 204 rotates, the smaller end of the cam 203 performs a circular motion around the center of the larger end.

[0048] The U-shaped tube 205 is installed on the installation shell 101. The push rod 201 is slidably installed inside the U-shaped tube 205. The other end of the U-shaped tube 205 is slidably installed with a contact rod 206 through a connecting spring 207. The cam 203 is used to contact the contact rod 206. The U-shaped tube 205 is installed on both sides of the installation shell 101. The cam 203 is located between the two contact rods 206. When in use, when the cam 203 rotates, its smaller end contacts and pushes one side of the contact rod 206, so as to push and compress the air inside the U-shaped tube 205 on this side, so that the air inside the U-shaped tube 205 pushes and contacts the push rod 201 installed inside the U-shaped tube 205 on this side, so as to contact the convex block 202. When the cam 203 rotates to release the contact with the contact rod 206 on this side, the connecting spring 207 pulls the contact rod 206 to reset. When the cam 203 continues to rotate, it will also contact the contact rod 206 on the opposite side. In this way, the two push rods 201 alternately contact the convex block 202, increasing the swinging frequency of the screening shell 102 and improving the screening effect of the stone material.

[0049] As Figure 2 , Fig. 9 and Fig.10 shown, in the second embodiment, a contact plate 303 is installed on the inclined plate 301. The contact plate 303 reduces the distance between the inclined plate 301 and the push rod 201. When the inclined plate 301 is in its normal state, its highest point faces the side of the push rod 201, and its lowest point faces the side away from the push rod 201, so as to gradually reduce the diameter of the feed inlet 105. The rotation point of the inclined plate 301 is located at its highest point, so that when the inclined plate 301 rotates, the maximum distance between them does not change, so that the stone material does not move to the side where the inclined plates 301 are far away from each other, so that the stone material passing through the inclined plate 301 can be squeezed by the inclined plate 301;

[0050] However, the above setting increases the distance between the inclined plate 301 and the push rod 201. Therefore, a contact plate 303 is installed at the lowest end of the inclined plate 301 to reduce the distance between the inclined plate 301 and the push rod 201, so that when the push rod 201 moves, it can contact the inclined plate 301 faster, improving the swinging efficiency of the inclined plate 301 and increasing the practicability of the device;

[0051] A blocking rod 304 is installed on the mounting shell 101. The blocking rod 304 is used to limit the rotation range of the inclined plate 301. The blocking rod 304 is located on the side of the inclined plate 301 away from the inner wall of the feed port 105, so that the inclined plates 301 can only rotate in the direction of approaching each other, and the maximum distance between the two inclined plates 301 is the distance between the two in normal state, so that when the stone is pushed by the inclined plate 301 on one side, the inclined plate 301 on the other side will not slide in the direction away from the stone, so that when the stone is crushed, the inclined plate 301 can rigidly disperse the stone, thereby increasing the practicability of the device.

[0052] like Figure 3 , Figure 7 and Fig. 9 As shown, in the second embodiment, the mounting shell 101 is fixedly mounted with a protruding shaft 4, the screening shell 102 is rotatably connected to the protruding shaft 4, and the protruding shaft 4 is the rotating shaft of the screening shell 102;

[0053] An inner cavity 401 is provided on the protruding shaft 4, and a water outlet 402 connected to the inner wall of the screening shell 102 is provided on the side wall of the protruding shaft 4. The protruding shaft 4 not only plays the role of a rotating shaft, but also plays the role of a pipeline, which increases the practicality of the protruding shaft 4. A water pipe connected to the water source on the construction site is installed on the side wall of the protruding shaft 4. When in use, water is sprayed into the screening shell 102 through the protruding shaft 4 to further soften the soil between the stones, so as to facilitate the separation of the stones bonded by the soil.

[0054] A piston rod 403 is slidably mounted on the protruding shaft 4, one end of the piston rod 403 passes through the protruding shaft 4 and is located outside the inner cavity 401. A one-way valve is installed in the water pipe so that water can enter the protruding shaft 4 in one direction. A one-way valve can also be installed at the water outlet 402 so that water can be discharged to the outside of the protruding shaft 4 in one direction. When the piston rod 403 slides in the inner cavity 401 away from the water outlet 402, the water pipe is sucked and water is pumped into the protruding shaft 4. When the piston rod 403 slides toward the water outlet 402, the piston rod 403 pushes the water inside the protruding shaft 4, so that the water is discharged to the outside of the water outlet 402, which is convenient for discharging the water into the screening shell 102 to soften the soil between the stones.

[0055] A connecting rod 404 is installed at the end of the piston rod 403, a bevel gear 1 405 is installed on the output shaft of the driving motor 204, and a bevel gear 2 406 meshing with the bevel gear 1 405 is rotatably installed on the outer wall of the protruding shaft 4, and the axes between the bevel gear 1 405 and the bevel gear 2 406 are perpendicular to each other, so that when the driving motor 204 rotates, the bevel gear 2 406 can be driven to rotate together through the bevel gear 1 405;

[0056] A driving disc 407 is rotatably mounted on the outer wall of the protruding shaft 4, and the driving disc 407 is connected to the second bevel gear 406 via a pulley assembly 408. The pulley assembly 408 includes two pulleys and one pulley, one of which is connected to the rotating shaft of the driving disc 407, and the other pulley is connected to the rotating shaft of the second bevel gear 406. The two pulleys are connected by a belt, so that when the second bevel gear 406 rotates, the driving disc 407 can be driven to rotate;

[0057] An articulated rod 409 is eccentrically hinged on the driving disk 407, and the articulated rod 409 is articulated with the connecting rod 404. When in use, when the driving disk 407 rotates, the articulated rod 409 is driven to approach the mounting shell 101, so that the articulated rod 409 pulls the connecting rod 404 to move close to the mounting shell 101, and then drives the piston rod 403 to slide close to the water outlet 402, so that the water flow is sprayed into the screening shell 102. As the driving disk 407 continues to rotate, the articulated rod 409 is driven to gradually move away from the mounting shell 101, so that the mounting shell 101 pushes the connecting rod 404 away from the mounting shell 101, and then drives the piston rod 403 away from the water outlet 402, so that water is injected into the protruding shaft 4, which is convenient for the next water spraying, thereby increasing the practicality of the device;

[0058] When in use, water is sprayed into the screening shell 102 through the protruding shaft 4 to soften the soil between the stones. As the screening shell 102 swings, the softened stones collide with the inner wall of the screening shell 102, thereby dispersing the softened stones, allowing smaller stones to be screened smoothly, thereby increasing the screening effect of the device.

[0059] like Fig.11 As shown, in the second embodiment, the side wall of the screening shell 102 is connected to the inner wall of the mounting shell 101, and the two sides of the screening shell 102 have openings, so that the inside thereof contacts the inner wall of the mounting shell 101. When shaking, the stones inside the screening shell 102 can collide with the inner wall of the mounting shell 101, thereby increasing the dispersion effect of the stones.

[0060] A knocking rod 5 is hinged on the mounting shell 101, and a knocking roller 6 is rotatably mounted on the knocking rod 5. A resistance spring 7 is installed between the knocking rod 5 and the mounting shell 101. During use, when the screening shell 102 shakes, the second screen 104 gradually resists the knocking roller 6, so that the knocking rod 5 rotates and the resistance spring 7 is also stretched. When the screening shell 102 swings to the other side, the resistance spring 7 resets, pulling the knocking rod 5 to rotate and reset. The force applied to the knocking roller 6 by the reset of the resistance spring 7 and the gravity of the knocking roller 6 itself will make the knocking roller 6 have acceleration, and then the knocking roller 6 hits the second screen 104, so that the entire screening shell 102 vibrates, which increases the movement of the stones on the first screen 103 and the second screen 104 on the two, so that the stones located near the top can move to the bottom to be screened through vibration, thereby increasing the screening effect of the device.

[0061] like Figure 6 and Fig.11 As shown, in the second embodiment, an extension plate 8 is installed on the protruding shaft 4, and a vertical plate 10 is slidably installed on the extension plate 8 by pulling a spring 9, and a vibration roller 11 is rotatably installed on the vertical plate 10 to Figure 1 From the main perspective, the vertical plate 10 is slidably installed on the extension plate 8 in the vertical direction. When the screening shell 102 swings, the position of the protruding shaft 4 remains unchanged, so that the upper surface of the second screen 104 contacts the vibration roller 11. At this time, the mobility between the second screen 104 and the vibration roller 11 is satisfied by the compression of the pulling spring 9. In this process, the stone on the second screen 104 contacts the vibration roller 11, and when contacting, the vibration roller 11 rotates through the relative movement between the second screen 104 and the screen 104, and then rolls the stone to the bottom of the vibration roller 11 for crushing, and squeezes the softened stone, which further increases the dispersion effect of the stone, thereby increasing the screening effect of the device.

[0062] Embodiment 3

[0063] like Figure 1 - Fig.11 As shown, the third embodiment is further disclosed on the basis of the second embodiment. In the third embodiment, a holding plate 12 is rotatably installed in the mounting shell 101 through a torsion spring, and a tooth block 13 is installed on the holding plate 12. One end of the holding plate 12 contacts the bottom of the inclined plate 301. When in use, the holding plate 12 is in a normal state, and its inclination direction is opposite to the inclination direction of the inclined plate 301, such as Fig.11As shown, when the contact plate 303 is pushed by the push rod 201, the contact plate 303 rotates to drive the inclined plate 301 to rotate, and the holding plate 12 is also pushed to rotate. The rotation direction of the holding plate 12 is to make the tooth block 13 rotate toward the direction close to the upper surface of the screen 103, and then the rotation of the holding plate 12 forms a tendency of contact and extrusion between the tooth block 13 and the upper surface of the screen 103, further crushing the stones on the screen 103, thereby increasing the screening effect of the device;

[0064] When the abutment plate 303 releases the abutment on the holding plate 12, the holding plate 12 is reset by the torsion spring, so as to facilitate the next pressing.

[0065] In the third embodiment, a shielding plate 14 is installed in the screening shell 102, and the water outlet 402 opens toward the second screen 104. The shielding plate 14 is used to cover or uncover the water outlet 402. The water outlet 402 is opened in a downward direction, and the water flow can be better sprayed into the screening shell 102 with the assistance of its own gravity.

[0066] In normal state, the shielding plate 14 blocks the water outlet 402. When the screening shell 102 shakes, the position of the protruding shaft 4 remains unchanged, thereby causing relative movement between the shielding plate 14 and the water outlet 402. The shielding plate 14 releases the shielding of the water outlet 402, allowing the water in the inner cavity 401 to be sprayed into the screening shell 102. When the screening shell 102 shakes to its original position, the shielding plate 14 covers the water outlet 402 again, and the area of ​​the shielding plate 14 is larger than the diameter of the water outlet 402, so that the screening shell 102 needs to move a certain distance before the shielding plate 14 releases the shielding of the water outlet 402. The shaking of the screening shell 102 can cause intermittent water discharge from the water outlet 402.

[0067] When in use, as the screening shell 102 swings, the water outlet 402 is intermittently connected to the inside of the screening shell 102, so that the water flow in the inner cavity 401 is intermittently sprayed into the screening shell 102, softening the soil between the stones. This allows the water flow to be softened normally while also saving water, thereby increasing the practicality of the device.

[0068] In the third embodiment, the cam 203 passes through the mounting shell 101 at the rotating shaft, and a circular plate 15 is installed on one end of the rotating shaft of the cam 203 located in the mounting shell 101, and an auxiliary rod 16 is eccentrically installed on the circular plate 15. When in use, when the cam 203 rotates, the auxiliary rod 16 makes a circular motion around its center on the circular plate 15, so that the auxiliary rod 16 moves in the mounting shell 101 close to or away from the upper surface of the screen 103, and the circular plate 15 is located below the feed port 105;

[0069] When in use, it has the following advantages. First, when the auxiliary rod 16 is close to the upper surface of the screen 103, it can assist the holding plate 12 to resist and pressurize the stone. Second, when the stone falls, the stone is moved by the rotation of the auxiliary rod 16, which reduces the possibility of excessive stone stacking and facilitates subsequent screening of the stone.

[0070] In the third embodiment, a discharge port 17 is provided on one side of the mounting shell 101, and a retaining shell 18 for covering the discharge port 17 is hinged on the mounting shell 101. The retaining shell 18 is connected to the mounting shell 101 by bolts. When the device is in a normal state, the discharge port 17 is aligned with the opening of the screening shell 102. After the screening is completed, the bolts on the retaining shell 18 are released, and the retaining shell 18 is rotated to expose the discharge port 17. At this time, the screening shell 102 can be rotated to tilt it, but the rotation range is such that the discharge port 17 can still be connected to the opening of the screening shell 102, so as to facilitate the discharge of stones located in the screening shell 102.

[0071] A through cavity 19 is formed on the convex block 202 facing the discharge port 17, a limiting plate 20 is hingedly connected to the convex block 202, a threaded sleeve 21 is installed in the through cavity 19, a limiting bolt 22 threadedly connected to the threaded sleeve 21 is installed on the limiting plate 20, the convex block 202 has a height, and the two convex blocks 202 act as partitions to concentrate the stones on the screen 103 between the two convex blocks 202;

[0072] When the retaining shell 18 is opened, the limiting bolt 22 is rotated to make it contact with the connection with the threaded sleeve 21, and the limiting plate 20 is rotated to release the obstruction of the through cavity 19. At this time, the screening shell 102 is in the above-mentioned inclined state, so that the stones located on the screen 103 can move through the through cavity 19 to the discharge port 17 for discharge, thereby increasing the feasibility of the device.

[0073] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A concrete stone screening device, characterized in that: Comprising: A mounting bracket (1) on which a mounting shell (101) is mounted. A screening shell (102) is rotatably mounted inside the mounting shell (101). The cross-section of the mounting shell (101) is circular, and the rotation point of the screening shell (102) coincides with the center of the cross-section of the mounting shell (101). A first sieve mesh (103) and a second sieve mesh (104) are mounted inside the screening shell (102). The sieve holes on the first sieve mesh (103) are larger than those on the second sieve mesh (104), and the position of the first sieve mesh (103) is higher than that of the second sieve mesh (104). A feed inlet (105) and a discharge outlet (106) are formed on the mounting shell (101), and the screening shell (102) is located between the feed inlet (105) and the discharge outlet (106). A driving member (2) is mounted on the mounting shell (101). The driving member (2) includes a push rod (201) slidably mounted on the mounting shell (101). A convex block (202) is mounted on the first sieve mesh (103). When the push rod (201)抵触 the convex block (202), the screening shell (102) swings inside the mounting shell (101). A crushing member (3) is mounted on the mounting shell (101). The crushing member (3) includes inclined plates (301) hinged at the mounting shell (101). There are two inclined plates (301), symmetrically hinged at the feed inlet (105). The inclined plates (301) are used to reduce the diameter of the feed inlet (105). Clamping blocks (302) are mounted on the inclined plates (301). When the push rod (201)抵触 the convex block (202), it also抵触 the inclined plates (301), forcing the distance between the inclined plates (301) to decrease.

2. The concrete stone screening device according to claim 1, characterized in that: The driving member (2) includes a cam (203) rotatably mounted on the mounting shell (101). A driving motor (204) is mounted on the mounting shell (101), and the output shaft of the driving motor (204) is connected to the rotating shaft of the cam (203). A U-shaped pipe (205) is mounted on the mounting shell (101). The push rod (201) is slidably mounted inside the U-shaped pipe (205). The other end of the U-shaped pipe (205) is slidably mounted with a抵触 rod (206) through a connecting spring (207), and the cam (203) is used to抵触 the抵触 rod (206).

3. The concrete stone screening device according to claim 2, characterized in that: A抵触 plate (303) is mounted on the inclined plate (301), and the抵触 plate (303) reduces the distance between the inclined plate (301) and the push rod (201). A shielding rod (304) is mounted on the mounting shell (101), and the shielding rod (304) is used to limit the rotation amplitude of the inclined plate (301).

4. The concrete stone screening device according to claim 3, characterized in that: The mounting shell (101) is provided with a protruding shaft (4), an inner cavity (401) is provided on the protruding shaft (4), a water outlet (402) is provided on the side wall of the protruding shaft (4) and is communicated with the inner wall of the screening shell (102), a piston rod (403) is slidably mounted on the protruding shaft (4), one end of the piston rod (403) passes through the protruding shaft (4) and is located outside the inner cavity (401), a connecting rod (404) is mounted on the end of the piston rod (403), and the driving motor A bevel gear 1 (405) is mounted on the output shaft (204); a bevel gear 2 (406) meshing with the bevel gear 1 (405) is rotatably mounted on the outer wall of the protruding shaft (4); a driving disk (407) is rotatably mounted on the outer wall of the protruding shaft (4); the driving disk (407) and the bevel gear 2 (406) are connected via a pulley assembly (408); an articulated rod (409) is eccentrically hinged on the driving disk (407); and the articulated rod (409) is hinged to the connecting rod (404).

5. The concrete stone screening device according to claim 4, characterized in that: The side wall of the screening shell (102) is communicated with the inner wall of the mounting shell (101); a knocking rod (5) is hingedly connected to the mounting shell (101); a knocking roller (6) is rotatably mounted on the knocking rod (5); and a resisting spring (7) is installed between the knocking rod (5) and the mounting shell (101).

6. The concrete stone screening device according to claim 5, characterized in that: An extension plate (8) is installed on the protruding shaft (4), a vertical plate (10) is slidably installed on the extension plate (8) by pulling a spring (9), and a vibration roller (11) is rotatably installed on the vertical plate (10).

7. The concrete stone screening device according to claim 6, characterized in that: A holding plate (12) is rotatably mounted in the mounting shell (101) via a torsion spring, a tooth block (13) is mounted on the holding plate (12), and one end of the holding plate (12) is in contact with the bottom of the inclined plate (301).

8. The concrete stone screening device according to claim 7, characterized in that: A shielding plate (14) is installed in the screening shell (102), the water outlet (402) opens toward the second screen (104), and the shielding plate (14) is used to cover or release the water outlet (402).

9. The concrete stone screening device according to claim 8, characterized in that: The cam (203) passes through the mounting shell (101) at the rotating shaft, and a circular plate (15) is installed on one end of the rotating shaft of the cam (203) located in the mounting shell (101), and an auxiliary rod (16) is eccentrically installed on the circular plate (15).

10. The concrete stone screening device according to claim 9, characterized in that: A discharge port (17) is provided on one side of the mounting shell (101), a stop shell (18) for sealing the discharge port (17) is hingedly connected to the mounting shell (101), the stop shell (18) and the mounting shell (101) are connected via bolts, a through cavity (19) is provided on the protrusion (202) facing the discharge port (17), a limiting plate (20) is hingedly connected to the protrusion (202), a threaded sleeve (21) is installed in the through cavity (19), and a limiting bolt (22) threadedly connected to the threaded sleeve (21) is installed on the limiting plate (20).

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