Civil engineering sand screening machine capable of conveniently cleaning screen

Abstract

The civil engineering sand screening machine comprises a bottom plate, two mounting plates are vertically arranged on the bottom plate, the upper portions of the two mounting plates are connected through a sliding screen plate, mounting rods are arranged at the tops of the two mounting plates, the two mounting rods are connected through a discharging groove, and a scattering mechanism is mounted in the discharging groove; a first vibrating mechanism is mounted between the sieve plate and the mounting plates, a second vibrating mechanism is mounted below the first vibrating mechanism, a filter box is mounted between the two mounting plates below the sieve plate, a third vibrating mechanism is mounted below the filter box, and a cleaning mechanism is mounted between the sieve plate and the mounting plates. According to the sand screening device, the scattering mechanism is arranged, the scattering rod rotates to scatter sand added into the discharging groove, the vibrating mechanism is arranged to scatter the sand added into the discharging groove, meanwhile, the sand is vibrated in a reciprocating mode, the sand is rapidly screened, and the overall sand screening efficiency and effect are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of sand screening equipment, and in particular relates to a sand screening machine for civil engineering which is convenient for cleaning a screen. Background Art

[0002] A sand screening machine is generally composed of a motor, a vibrator, a screen, etc. The motor drives the vibrator to generate vibration force, which makes the sand and stone impurities constantly collide and rub on the screen, and then separates the sand and stones of different sizes, thereby achieving the screening effect; during use, when the sand is screened on the screen, the sand has irregular shapes and sizes. When the sand passes through the mesh, its irregular shape causes it to rub and get stuck with the edge of the mesh, which is prone to get stuck, causing the screen to be blocked and preventing it from passing smoothly. At this time, the workers must manually clean the screen, thus wasting time and worker costs, which not only affects the efficiency and quality of screening, but also damages the screen to a certain extent, reduces the life of the screen, and affects the overall sand screening effect.

[0003] A Chinese patent (application number: 202310540875.X, publication number: CN 116493253 A, publication date: 2023.07.28) discloses a sand screening machine for civil engineering, which diverts the material by setting up a material dividing assembly, utilizes the material to contact the outer surface of the outer cylinder and generate friction, drives the outer cylinder, sleeve and support shaft to rotate to the left and right sides, and fully disperses the material, thereby improving the uniformity of dispersion of the material entering the filter surface and improving the working efficiency of the device. Although the one-way engagement of the one-way cylinder and the ratchet cylinder can realize the material dividing function under certain circumstances, in actual use, if a large material impact force is encountered or impurities enter the engagement part, it may cause jamming. This will prevent the material dividing assembly from rotating normally, affecting the working efficiency of the sand screening machine.

[0004] The Chinese patent (application number: 201910207203.0, publication number: CN 109772692 A, publication date: 2019.03.19) discloses a special vibrating sand screening device for high-efficiency and energy-saving construction engineering construction and its use method. The vibrating sand screening mechanism drives the screen to vibrate synchronously, separates the unscreened sand and gravel covered on the screen, and the sand with small diameter falls from the screen holes of the screen. The gravel with large diameter remains above the screen. The extension of the hydraulic telescopic rod drives the push rod to slide above the screen, and the gravel remaining above the screen is pushed away from the surface of the screen to complete the sand screening. There is no need to manually clean the gravel, which is more efficient. The first reciprocating vibrating rod and the second reciprocating vibrating rod may interfere with the movement of the push rod during the vibrating sand screening process. For example, the vibration of the vibrating rod may affect the stability of the push rod, causing the push rod to shake or deviate when pushing the gravel, reducing the pushing effect. At the same time, the movement of the push rod may also affect the vibration frequency and amplitude of the vibrating rod, thereby affecting the sand screening effect.

[0005] Based on this, a sand screening machine for civil engineering that is convenient for cleaning the screen is designed, which has important research significance and practical value. Summary of the invention

[0006] The purpose of the present invention is to provide a sand screening machine for civil engineering, which is convenient for cleaning the screen, so as to solve the problem that the existing sand screening machine is prone to getting stuck when screening sand on the screen during use.

[0007] The technical solution adopted by the present invention is a sand screening machine for civil engineering that is convenient for cleaning the screen, comprising a base plate, two mounting plates vertically arranged on the base plate, and the two mounting plates are connected above by a sliding screen plate; mounting rods are arranged on the tops of the two mounting plates, and the two mounting rods are connected by a feed chute, and a breaking mechanism is installed in the feed chute; a first vibrating mechanism is installed between the screen plate and the mounting plate, a second vibrating mechanism is installed below the first vibrating mechanism, a filter box is installed between the two mounting plates below the screen plate, a third vibrating mechanism is installed below the filter box, and a cleaning mechanism is installed between the screen plate and the mounting plate.

[0008] The present invention is also characterized in that:

[0009] The breaking up mechanism includes a first fixed plate, a first fixed plate is arranged on one side of the material discharge chute, a motor is installed under the first fixed plate, a first rotating shaft is rotatably arranged in the material discharge chute, a plurality of breaking up rods are respectively installed on the first rotating shaft, and one end of the first rotating shaft rotates through the inner wall of the material discharge chute and is connected to the output shaft of the motor.

[0010] The first vibration mechanism includes a first sprocket, a first sprocket is sleeved on the first rotating shaft between the motor output shaft and the discharge chute, a second sprocket is installed below the first sprocket, a first chain is installed on the second sprocket and the first sprocket, the second sprocket runs through the second rotating shaft, one end of the second rotating shaft is rotatably connected to the outer wall of the mounting plate, the other end of the second rotating shaft is connected to one end of the first rotating rod, the other end of the first rotating rod is rotatably connected to one end of the second rotating rod, and the other end of the second rotating rod is connected to the first sliding column; a through first inclined slide groove is provided on the mounting plate, a first connecting rod slides through the first inclined slide groove, one end of the first connecting rod is connected to the screen plate, the other end of the first connecting rod is connected to the first lever, a first vertical slide groove is provided on the first lever, and the first sliding column is slidably arranged in the first vertical slide groove.

[0011] The second vibration mechanism comprises a third sprocket, and the second rotating shaft between the first rotating rod and the second sprocket is sleeved with a third sprocket. The third rotating shaft is penetrated by the mounting plate that rotates in the first inclined slide groove, and one end of the third rotating shaft is provided with a fourth sprocket, and the second chain is installed on the third sprocket and the fourth sprocket; the other end of the third rotating shaft is connected to one end of the third rotating rod, and the other end of the third rotating rod is rotatably connected to one end of the fourth rotating rod, and the other end of the fourth rotating rod is rotatably connected to the connection between one end of one of the sixth rotating rods and the fifth rotating rod; the inner wall of the mounting plate above the other end of the third rotating shaft is rotatably connected to one end of the fourth rotating shaft, and the other end of the fourth rotating shaft is connected to the middle of the fifth rotating rod, and the second fixed plate is connected to the inner wall of the mounting plate above the fifth rotating rod, and the two ends of the fifth rotating rod are respectively rotatably connected to one end of the sixth rotating rod, and the other end of the sixth rotating rod is rotatably connected to one end of the vibration rod, and the other ends of the two vibration rods respectively slide through the second fixed plate and the bottom of the screen plate.

[0012] The third vibration mechanism includes a fifth sprocket, a fifth sprocket is sleeved on the third rotating shaft between the fourth sprocket and the mounting plate, a sixth sprocket is mounted on one side of the fifth sprocket, a third chain is mounted on the fifth sprocket and the sixth sprocket, the sixth sprocket is connected to one end of the fifth rotating shaft, the other end of the fifth rotating shaft rotates through the inner walls of the front mounting plate and the rear mounting plate, two cams are respectively sleeved on the fifth rotating shaft between the two mounting plates, and the two cams are respectively connected to the bottom wall of the filter box.

[0013] The cleaning mechanism includes a seventh sprocket, a seventh sprocket is also sleeved on the other end of the fifth rotating shaft, an eighth sprocket is installed on one side of the seventh sprocket, a fourth chain is installed on the seventh sprocket and the eighth sprocket, a sixth rotating shaft runs through the eighth sprocket, one end of the sixth rotating shaft is rotatably connected to the outer wall of the mounting plate, the other end of the sixth rotating shaft is connected to one end of the seventh rotating rod, the other end of the seventh rotating rod is rotatably connected to one end of the eighth rotating rod, the other end of the eighth rotating rod is rotatably connected to one end of the ninth rotating rod, the other end of the ninth rotating rod is connected to one end of the seventh rotating shaft, and the other end of the seventh rotating shaft is rotatably connected to the outer wall of the mounting plate; the seventh rotating shaft between the mounting plate and the ninth rotating rod is sleeved A first gear is provided, a second gear is meshed and connected on the upper side of the first gear, an eighth rotating shaft passes through the second gear, one end of the eighth rotating shaft is rotatably connected to the outer wall of the mounting plate, the other end of the eighth rotating shaft is connected to one end of the tenth rotating rod, and the other end of the tenth rotating rod is connected to the second sliding column; a second inclined slide groove is provided on the mounting plate below the screen plate, a second connecting rod slides through the second inclined slide groove, one end of the second connecting rod is connected to a brush plate, the brush plate is detachably connected to the bottom of the screen plate, the other end of the second connecting rod is connected to the second lever, the second lever is provided with a second vertical slide groove, and the second sliding column is slidably set in the second vertical slide groove.

[0014] The mounting plates on both sides of the screen plate are provided with third inclined slide grooves, and the screen plate is provided with protrusions matched with the third inclined slide grooves, and the protrusions are slidably arranged in the third inclined slide grooves.

[0015] A collecting box is also arranged on the bottom plate, and the collecting box is located between the two mounting plates.

[0016] The beneficial effects of the present invention are as follows: the present invention realizes the rotation of the scattering rod to scatter the sand added to the feeding trough by arranging the scattering mechanism, and reciprocates the sand while arranging the vibration mechanism to scatter the sand added to the feeding trough, so that the sand can be quickly screened, thereby improving the overall sand screening efficiency and effect; the cleaning mechanism can be arranged to reciprocately clean the screen plate to prevent the occurrence of stuck holes; the present invention has a simple and reliable structure, a good cleaning effect on the screen, is easy to control, and is suitable for promotion. DETAILED DESCRIPTION

[0017] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 It is a structural schematic diagram of a civil engineering sand screening machine for conveniently cleaning the screen mesh of the present invention;

[0019] Figure 2 It is a schematic diagram of the installation of the fifth rotating shaft in the civil engineering sand screening machine of the present invention, which facilitates the cleaning of the screen;

[0020] Figure 3It is a schematic diagram of the installation of the second fixed plate in the civil engineering sand screening machine of the present invention, which facilitates the cleaning of the screen;

[0021] Figure 4 It is a schematic diagram of the installation of a brush plate in a civil engineering sand screening machine for conveniently cleaning the screen mesh of the present invention;

[0022] Figure 5 It is a schematic diagram of the installation of the third sprocket in the sand screening machine for civil engineering that facilitates the cleaning of the screen mesh of the present invention;

[0023] Figure 6 The invention is a schematic diagram of the installation of a vibrating rod in a civil engineering sand screening machine for conveniently cleaning the screen.

[0024] In the figure, 1. bottom plate, 101. collecting box, 102. mounting plate, 2. material chute, 21. motor, 22. first rotating shaft, 23. breaking rod, 24. first fixing plate, 25. mounting rod, 3. screen plate, 31. first sprocket, 32. second sprocket, 33. first chain, 34. protrusion, 35. second rotating shaft, 36. first rotating rod, 37. second rotating rod, 38. first sliding column, 39. first lever, 310. first connecting rod, 4. vibrating rod, 41. third sprocket, 42. second chain, 43. fourth sprocket, 44. third rotating shaft, 45. third rotating rod, 46. fourth rotating rod, 47. .Fifth rotating rod, 48. Fourth rotating shaft, 49. Sixth rotating rod, 410. Second fixed plate, 5. Filter box, 51. Fifth sprocket, 52. Third chain, 53. Sixth sprocket, 54. Fifth rotating shaft, 55. Cam, 6. Brush plate, 61. Seventh sprocket, 62. Fourth chain, 63. Eighth sprocket, 64. Sixth rotating shaft, 65. Seventh rotating rod, 66. Eighth rotating rod, 67. Ninth rotating rod, 68. Seventh rotating shaft, 69. First gear, 610. Second gear, 611. Eighth rotating shaft, 612. Tenth rotating rod, 613. Second sliding column, 614. Second lever, 615. Second connecting rod. DETAILED DESCRIPTION

[0026] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Example 1

[0028] The invention is convenient for cleaning the screen mesh of a civil engineering sand screening machine, such as Figure 1As shown, it includes a bottom plate 1, a feed chute 2, a sieve plate 3, a vibrating rod 4, a filter box 5, and a brush plate 6; two mounting plates 102 are vertically arranged on the bottom plate 1, and a collecting box 101 is also arranged on the bottom plate 1, and the collecting box 101 is located between the two mounting plates 102, and the two mounting plates 102 are connected by a sliding sieve plate 3 above, and the sieve plate 3 is arranged at an angle; a mounting rod 25 is arranged on the top of the two mounting plates 102, and the two mounting rods 25 are connected by the feed chute 2, and the mounting rod 25 is used to install the feed chute 2, and the feed chute 2 is located above the sieve plate 3;

[0029] A scattering mechanism for scattering sand is installed in the feeding chute 2; the scattering mechanism includes a motor 21, a first rotating shaft 22, a scattering rod 23 and a first fixed plate 24. A first fixed plate 24 is horizontally arranged on one side of the feeding chute 2, and a motor 21 is installed below the first fixed plate 24. A first rotating shaft 22 is rotatably arranged in the feeding chute 2, and a plurality of scattering rods 23 are respectively installed on the first rotating shaft 22. One end of the first rotating shaft 22 rotates through the inner wall of the feeding chute 2 and is connected to the output shaft of the motor 21;

[0030] The motor 21 drives the first rotating shaft 22 to rotate, and the rotation of the first rotating shaft 22 drives the breaking rod 23 to rotate. The breaking rod 23 rotates to break up the sand added to the feeding trough 2 to prevent the agglomerated sand from being difficult to pass through the screen plate 3, resulting in low sand screening efficiency;

[0031] A first vibration mechanism is installed between the sieve plate 3 and the mounting plate 102 to drive the sieve plate 3 to shake left and right, and the first vibration mechanism is driven by the breaking mechanism;

[0032] like Figure 5 As shown, the first vibration mechanism includes a first sprocket 31, a second sprocket 32, a first chain 33, a second rotating shaft 35, a first rotating rod 36, a second rotating rod 37, a first sliding column 38, a first lever 39 and a first connecting rod 310. The first sprocket 31 is fixedly sleeved on the first rotating shaft 22 between the output shaft of the motor 21 and the discharge chute 2, the second sprocket 32 ​​is installed below the first sprocket 31, the second sprocket 32 ​​and the first sprocket 31 are installed with the first chain 33 meshing with each other, the second rotating shaft 35 runs through the second sprocket 32, one end of the second rotating shaft 35 is rotatably connected to the outer wall of the mounting plate 102, the other end of the second rotating shaft 35 is connected to one end of the first rotating rod 36, the other end of the first rotating rod 36 is rotatably connected to one end of the second rotating rod 37, and the other end of the second rotating rod 37 is connected to the first sliding column 38;

[0033] like Figure 2As shown, the mounting plate 102 is provided with a through first inclined slide groove, a first connecting rod 310 is slidably penetrated in the first inclined slide groove, one end of the first connecting rod 310 is connected to the screen plate 3, and the other end of the first connecting rod 310 is vertically connected to a first lever 39, the first lever 39 is provided with a first vertical slide groove, and the first sliding column 38 is slidably arranged in the first vertical slide groove;

[0034] A second vibration mechanism is installed below the first vibration mechanism to drive the screen plate 3 to shake up and down, and the second vibration mechanism is driven by the first vibration mechanism;

[0035] like Figure 3 As shown, the second vibration mechanism includes a vibration rod 4, a third sprocket 41, a second chain 42, a fourth sprocket 43, a third rotating shaft 44, a third rotating rod 45, a fourth rotating rod 46, a fifth rotating rod 47, a fourth rotating shaft 48, a sixth rotating rod 49 and a second fixed plate 410.

[0036] A third sprocket 41 is sleeved on the second rotating shaft 35 between the first rotating rod 36 and the second sprocket 32, and a second chain 42 meshing with the third sprocket 41 and the fourth sprocket 43 is installed; a third rotating shaft 44 is rotated through the mounting plate 102 below the first inclined slide groove, and a fourth sprocket 43 is installed at one end of the third rotating shaft 44, and the other end of the third rotating shaft 44 is connected to one end of the third rotating rod 45, such as Figure 6 As shown, the other end of the third rotating rod 45 is rotatably connected to one end of the fourth rotating rod 46, and the other end of the fourth rotating rod 46 is rotatably connected to the connection between one end of one of the sixth rotating rods 49 and the fifth rotating rod 47; the inner wall of the mounting plate 102 above the other end of the third rotating shaft 44 is rotatably connected to one end of the fourth rotating shaft 48, and the other end of the fourth rotating shaft 48 is connected to the middle of the fifth rotating rod 47, and the fourth rotating shaft 48 is used to install the fifth rotating rod 47. A second fixed plate 410 is vertically connected to the inner wall of the side mounting plate 102 above the fifth rotating rod 47, and two ends of the fifth rotating rod 47 are respectively rotatably connected to one end of the sixth rotating rod 49, and the other end of the sixth rotating rod 49 is rotatably connected to one end of the vibration rod 4, and the other ends of the two vibration rods 4 slide through the second fixed plate 410 and the bottom of the sieve plate 3 respectively; the second fixed plate 410 is used to install the vibration rod 4;

[0037] A filter box 5 is installed between the two mounting plates 102 below the screen plate 3, and a third vibration mechanism for secondary screening is installed below the filter box 5, and the third vibration mechanism is driven by the second vibration mechanism;

[0038] The third vibration mechanism includes a fifth sprocket 51, a third chain 52, a sixth sprocket 53, a fifth rotating shaft 54 ​​and a cam 55. The fifth sprocket 51 is sleeved on the third rotating shaft 44 between the fourth sprocket 43 and the mounting plate 102. The sixth sprocket 53 is installed on one side of the fifth sprocket 51. The third chain 52 meshing with each other is installed on the fifth sprocket 51 and the sixth sprocket 53. The sixth sprocket 53 is connected to one end of the fifth rotating shaft 54. The other end of the fifth rotating shaft 54 ​​rotates through the inner wall of the front mounting plate 102 and the rear mounting plate 102. Two cams 55 are respectively sleeved on the fifth rotating shaft 54 ​​between the two mounting plates 102. The two cams 55 are respectively detachably connected to the bottom wall of the filter box 5.

[0039] A cleaning mechanism for cleaning the sieve plate 3 is installed between the sieve plate 3 and the mounting plate 102, and the cleaning mechanism is driven by a third vibration mechanism;

[0040] Example 2

[0041] Further, if Figure 4 As shown, the cleaning mechanism includes a brush plate 6, a seventh sprocket 61, a fourth chain 62, an eighth sprocket 63, a sixth rotating shaft 64, a seventh rotating rod 65, an eighth rotating rod 66, a ninth rotating rod 67, a seventh rotating shaft 68, a first gear 69, a second gear 610, an eighth rotating shaft 611, a tenth rotating rod 612, a second sliding column 613, a second lever 614 and a second connecting rod 615, the other end of the fifth rotating shaft 54 ​​is sleeved with the seventh sprocket 61, one side of the seventh sprocket 61 is installed with the eighth sprocket 63, the seventh sprocket 61 and the The eighth sprocket 63 is provided with a meshing fourth chain 62, the eighth sprocket 63 is penetrated by a sixth rotating shaft 64, one end of the sixth rotating shaft 64 is rotatably connected to the outer wall of the mounting plate 102, the other end of the sixth rotating shaft 64 is connected to one end of a seventh rotating rod 65, the other end of the seventh rotating rod 65 is rotatably connected to one end of an eighth rotating rod 66, the other end of the eighth rotating rod 66 is rotatably connected to one end of a ninth rotating rod 67, the other end of the ninth rotating rod 67 is connected to one end of a seventh rotating shaft 68, the other end of the seventh rotating shaft 68 is rotatably connected to the outer wall of the mounting plate 102;

[0042] A first gear 69 is sleeved on the seventh rotating shaft 68 between the mounting plate 102 and the ninth rotating rod 67, and a second gear 610 is meshedly connected to the upper side of the first gear 69. An eighth rotating shaft 611 runs through the second gear 610, and one end of the eighth rotating shaft 611 is rotatably connected to the outer wall of the mounting plate 102, and the other end of the eighth rotating shaft 611 is connected to one end of the tenth rotating rod 612, and the other end of the tenth rotating rod 612 is connected to the second sliding column 613;

[0043] A second inclined slide groove is provided on the mounting plate 102 below the sieve plate 3, and a second connecting rod 615 slides through the second inclined slide groove. One end of the second connecting rod 615 is connected to a brush plate 6, and the brush plate 6 is detachably connected to the bottom of the sieve plate 3. The other end of the second connecting rod 615 is connected to a second lever 614, and the second lever 614 is provided with a second vertical slide groove, and the second sliding column 613 is slidably set in the second vertical slide groove; the first connecting rod 310 and the second connecting rod 615 are both quadrangular prisms.

[0044] The mounting plates 102 on both sides of the sieve plate 3 are provided with third inclined chutes, and the sieve plate 3 is provided with protrusions 34 that match the third inclined chutes. The protrusions 34 are slidably arranged in the third inclined chutes. The third inclined chutes and the protrusions 34 cooperate to ensure that the sieve plate 3 slides smoothly on the mounting plates 102 on both sides of the sieve plate 3.

[0045] Example 3

[0046] The sand screening machine for civil engineering that is convenient for cleaning the screen mesh of the present invention has the following specific working principles:

[0047] When the sand needs to be screened, the motor 21 is turned on, and then the sand to be screened is added to the lower trough 2. At this time, the motor 21 drives the first rotating shaft 22 to rotate, and the rotation of the first rotating shaft 22 drives the breaking rod 23 to rotate. The breaking rod 23 rotates to break up the sand added to the lower trough 2. The rotation of the first rotating shaft 22 drives the first sprocket 31 to rotate, and the rotation of the first sprocket 31 drives the second sprocket 32 ​​to rotate, and the rotation of the second sprocket 32 ​​drives the second rotating shaft 35 to rotate, and the rotation of the second rotating shaft 35 drives the first rotating rod 36 to rotate, and the first The rotation of the rotating rod 36 drives the second rotating rod 37 to rotate, the rotation of the second rotating rod 37 drives the first sliding column 38 to rotate, the rotation of the first sliding column 38 drives the first lever 39 to move back and forth left and right, the reciprocating left and right movement of the first lever 39 drives the first connecting rod 310 to move back and forth left and right along the first inclined chute, the reciprocating left and right movement of the first connecting rod 310 along the first inclined chute drives the screen plate 3 to move back and forth left and right along the first inclined chute, and the reciprocating left and right movement of the screen plate 3 along the first inclined chute is used to reciprocate left and right to vibrate the sand to screen the sand;

[0048] The rotation of the second rotating shaft 35 drives the third sprocket 41 to rotate, the rotation of the third sprocket 41 drives the fourth sprocket 43 to rotate, the rotation of the fourth sprocket 43 drives the third rotating shaft 44 to rotate, the rotation of the third rotating shaft 44 drives the third rotating rod 45 to rotate, the rotation of the third rotating rod 45 drives the fourth rotating rod 46 to rotate, the rotation of the fourth rotating rod 46 drives the fifth rotating rod 47 to swing around the fourth rotating shaft 48, the swinging of the fifth rotating rod 47 drives the sixth rotating rod 49 to move up and down reciprocatingly, the reciprocating up and down movement of the sixth rotating rod 49 drives the vibrating rod 4 to move up and down reciprocatingly, the reciprocating up and down movement of the vibrating rod 4 thereby reciprocatingly knocks the bottom of the screen plate 3 up and down, and reciprocatingly vibrates the sand up and down, so that the sand can be quickly screened, thereby improving the overall sand screening efficiency and effect;

[0049] The rotation of the third rotating shaft 44 drives the fifth sprocket 51 to rotate, the rotation of the fifth sprocket 51 drives the sixth sprocket 53 to rotate, the rotation of the sixth sprocket 53 drives the fifth rotating shaft 54 ​​to rotate, the rotation of the fifth rotating shaft 54 ​​drives the cam 55 to rotate, the rotation of the cam 55 is used to perform secondary vibration screening of sand adhered to impurities such as stones that fall into the filter box 5 after being screened out by the screen plate 3, thereby further improving the sand screening effect; the rotation of the fifth rotating shaft 54 ​​drives the seventh sprocket 61 to rotate, the rotation of the seventh sprocket 61 drives the eighth sprocket 63 to rotate, the rotation of the eighth sprocket 63 drives the sixth rotating shaft 64 to rotate, the rotation of the sixth rotating shaft 64 drives the seventh rotating rod 65 to rotate, the rotation of the seventh rotating rod 65 drives the eighth rotating rod 66 to rotate, the rotation of the eighth rotating rod 66 drives the ninth rotating rod 67 to swing, and the swing of the ninth rotating rod 67 drives the seventh rotating shaft 68 to reciprocate The reciprocating rotation of the seventh rotating shaft 68 drives the first gear 69 to rotate reciprocatingly, the reciprocating rotation of the first gear 69 drives the second gear 610 to rotate reciprocatingly, the reciprocating rotation of the second gear 610 drives the eighth rotating shaft 611 to rotate reciprocatingly, the reciprocating rotation of the eighth rotating shaft 611 drives the tenth rotating rod 612 to rotate reciprocatingly, the reciprocating rotation of the tenth rotating rod 612 drives the second sliding column 613 to rotate reciprocatingly, the reciprocating rotation of the second sliding column 613 drives the second lever 614 to move back and forth left and right, the reciprocating movement of the second lever 614 left and right drives the second connecting rod 615 to move back and forth left and right along the second inclined slide groove, the second connecting rod 615 moves back and forth left and right along the second inclined slide groove, drives the brush plate 6 to move back and forth left and right along the second inclined slide groove, and the brush plate 6 moves back and forth left and right along the second inclined slide groove to clean the screen plate 3 back and forth to prevent the hole from getting stuck.

[0050] The sand screening machine for civil engineering of the present invention realizes the rotation of the scattering rod to scatter the sand added to the feeding trough and avoids the agglomeration of the sand by arranging the scattering mechanism; by arranging the first vibrating mechanism, the scattering rod is rotated to scatter the sand added to the feeding trough, and the screen plate moves back and forth left and right along the first inclined chute to vibrate the sand back and forth to screen the sand; by arranging the second vibrating mechanism, the vibrating rod moves back and forth up and down and then knocks the bottom of the screen plate back and forth up and down to vibrate the sand up and down, so that the sand can be quickly screened, thereby improving the overall sand screening efficiency and effect; by arranging the third vibrating mechanism, the cam rotates to perform secondary vibration screening on the sand adhered to impurities such as stones that fall into the filter box after being screened out by the screen plate, thereby further improving the sand screening effect and increasing the practicability of the device; by arranging the cleaning mechanism, the brush plate moves back and forth left and right along the second inclined chute to clean the screen plate back and forth to prevent the occurrence of a hole-stuck phenomenon and cause the screen plate to be blocked.

Claims

1. A sand screening machine for civil engineering that is convenient for cleaning the screen, characterized in that: The invention comprises a bottom plate (1), on which two mounting plates (102) are vertically arranged, and the two mounting plates (102) are connected above by a sliding screen plate (3), and the screen plate (3) is arranged at an angle; mounting rods (25) are arranged at the top of the two mounting plates (102), and the two mounting rods (25) are connected by a material discharge chute (2), and a scattering mechanism is installed in the material discharge chute (2); a first vibration mechanism is installed between the sieve plate (3) and the mounting plate (102), and a second vibration mechanism is installed below the first vibration mechanism; a filter box (5) is installed between the two mounting plates (102) below the sieve plate (3), and a third vibration mechanism is installed below the filter box (5); and a cleaning mechanism is installed between the sieve plate (3) and the mounting plate (102).

2. The sand screening machine for civil engineering that facilitates cleaning of the screen as claimed in claim 1, characterized in that: The dispersing mechanism comprises a first fixed plate (24), a first fixed plate (24) is arranged on one side of the material discharge chute (2), a motor (21) is installed below the first fixed plate (24), a first rotating shaft (22) is rotatably arranged in the material discharge chute (2), a plurality of dispersing rods (23) are respectively installed on the first rotating shaft (22), and one end of the first rotating shaft (22) is rotatably passed through the inner wall of the material discharge chute (2) and is connected to the output shaft of the motor (21).

3. The sand screening machine for civil engineering that facilitates cleaning of the screen as claimed in claim 2, characterized in that: The first vibration mechanism comprises a first sprocket (31), a first rotating shaft (22) between the output shaft of the motor (21) and the material discharge chute (2) is sleeved with the first sprocket (31), a second sprocket (32) is installed below the first sprocket (31), a first chain (33) is installed on the second sprocket (32) and the first sprocket (31), a second rotating shaft (35) passes through the second sprocket (32), one end of the second rotating shaft (35) is rotatably connected to the outer wall of the mounting plate (102), and the other end of the second rotating shaft (35) is connected to one end of the first rotating rod (36), The other end of the first rotating rod (36) is rotatably connected to one end of the second rotating rod (37), and the other end of the second rotating rod (37) is connected to the first sliding column (38); the mounting plate (102) is provided with a through first inclined slide groove, and a first connecting rod (310) slides through the first inclined slide groove, one end of the first connecting rod (310) is connected to the screen plate (3), and the other end of the first connecting rod (310) is connected to the first shifting rod (39), and the first shifting rod (39) is provided with a first vertical slide groove, and the first sliding column (38) is slidably set in the first vertical slide groove.

4. The civil engineering sand screening machine that facilitates the cleaning of the screen as claimed in claim 3, characterized in that: The second vibration mechanism comprises a third sprocket (41), a third sprocket (41) is sleeved on the second rotating shaft (35) between the first rotating rod (36) and the second sprocket (32), a third rotating shaft (44) is rotatably penetrated in the mounting plate (102) below the first inclined slide groove, a fourth sprocket (43) is arranged at one end of the third rotating shaft (44), and a second chain (42) is mounted on the third sprocket (41) and the fourth sprocket (43); the other end of the third rotating shaft (44) is connected to one end of the third rotating rod (45), the other end of the third rotating rod (45) is rotatably connected to one end of the fourth rotating rod (46), and the other end of the fourth rotating rod (46) is connected to one of the sixth rotating rods (46). One end of the rotating rod (49) is rotatably connected to the connection point of the fifth rotating rod (47); the inner wall of the mounting plate (102) above the other end of the third rotating shaft (44) is rotatably connected to one end of the fourth rotating shaft (48), the other end of the fourth rotating shaft (48) is connected to the middle of the fifth rotating rod (47), the inner wall of the mounting plate (102) above the fifth rotating rod (47) is connected to a second fixed plate (410), the two ends of the fifth rotating rod (47) are respectively rotatably connected to one end of the sixth rotating rod (49), the other end of the sixth rotating rod (49) is rotatably connected to one end of the vibration rod (4), and the other ends of the two vibration rods (4) respectively slide through the second fixed plate (410) and the bottom of the screen plate (3).

5. The civil engineering sand screening machine that facilitates the cleaning of the screen as claimed in claim 4, characterized in that: The third vibration mechanism comprises a fifth sprocket (51), a fifth sprocket (51) is sleeved on the third rotating shaft (44) between the fourth sprocket (43) and the mounting plate (102), a sixth sprocket (53) is mounted on one side of the fifth sprocket (51), a third chain (52) is mounted on the fifth sprocket (51) and the sixth sprocket (53), the sixth sprocket (53) is connected to one end of the fifth rotating shaft (54), the other end of the fifth rotating shaft (54) rotates through the inner wall of the front mounting plate (102) and the rear mounting plate (102), two cams (55) are respectively sleeved on the fifth rotating shaft (54) between the two mounting plates (102), and the two cams (55) are respectively connected to the bottom wall of the filter box (5).

6. The sand screening machine for civil engineering that facilitates cleaning of the screen as claimed in claim 5, characterized in that: The cleaning mechanism comprises a seventh sprocket (61), the other end of the fifth rotating shaft (54) is also sleeved with the seventh sprocket (61), an eighth sprocket (63) is installed on one side of the seventh sprocket (61), a fourth chain (62) is installed on the seventh sprocket (61) and the eighth sprocket (63), a sixth rotating shaft (64) runs through the eighth sprocket (63), one end of the sixth rotating shaft (64) is rotatably connected to the outer wall of the mounting plate (102), and the other end of the sixth rotating shaft (64) is rotatably connected to the outer wall of the mounting plate (102). The seventh rotating shaft (68) is connected to one end of the seventh rotating rod (65), the other end of the seventh rotating rod (65) is rotatably connected to one end of the eighth rotating rod (66), the other end of the eighth rotating rod (66) is rotatably connected to one end of the ninth rotating rod (67), the other end of the ninth rotating rod (67) is connected to one end of the seventh rotating shaft (68), and the other end of the seventh rotating shaft (68) is rotatably connected to the outer wall of the mounting plate (102); the seventh rotating shaft (68) between the mounting plate (102) and the ninth rotating rod (67) is sleeved A first gear (69) is provided, the upper side of the first gear (69) is meshedly connected with a second gear (610), an eighth rotating shaft (611) runs through the second gear (610), one end of the eighth rotating shaft (611) is rotatably connected to the outer wall of the mounting plate (102), the other end of the eighth rotating shaft (611) is connected to one end of a tenth rotating rod (612), and the other end of the tenth rotating rod (612) is connected to a second sliding column (613); the mounting plate below the sieve plate (3) (102) is provided with a second inclined slide groove, and a second connecting rod (615) slides through the second inclined slide groove, one end of the second connecting rod (615) is connected to a brush plate (6), and the brush plate (6) is detachably connected to the bottom of the screen plate (3), and the other end of the second connecting rod (615) is connected to a second lever (614), and the second lever (614) is provided with a second vertical slide groove, and the second sliding column (613) is slidably set in the second vertical slide groove.

7. The civil engineering sand screening machine that facilitates the cleaning of the screen as claimed in claim 6, characterized in that: The mounting plates (102) on both sides of the sieve plate (3) are provided with third inclined slide grooves, and the sieve plate (3) is provided with protrusions (34) matching with the third inclined slide grooves, and the protrusions (34) are slidably arranged in the third inclined slide grooves.

8. The civil engineering sand screening machine that facilitates the cleaning of the screen as claimed in claim 1, characterized in that: A collection box (101) is also provided on the bottom plate (1), and the collection box (101) is located between two mounting plates (102).

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