Control method for gravel screening of gravel vibrating screen

Abstract

The control method comprises the steps that a mounting frame is fixed to the construction ground through supporting legs, and an electric telescopic rod A and an electric telescopic rod B oppositely clamp the side edge of a screen surface, so that the screen surface is rigidly supported in the mounting frame; the rolling rod rolls below the screen surface, so that when the hole adjusting bulges with different widths correspond to the screen holes, the sizes of the screen holes are changed; the vibrators on the side edges of the mounting frame generate vibration, and gravel aggregates with different particle sizes are screened out from gravel on the screen face. The rolling rods roll below the screen face, when the hole adjusting protrusions with different widths correspond to the screen holes, the size of the screen holes is changed, screening of gravel with different grain sizes is achieved, the rolling rods roll below the screen face and do not need to move on the horizontal plane, and the problem that the size of the screen holes is changed when no space exists for relative displacement and dislocation of the two screens exists is solved. And the size of the sieve pores cannot be changed.

Description

Technical Field

[0001] The invention relates to a control method for screening sand and gravel using a sand and gravel vibrating screen, belonging to the technical field of reagent mixing equipment. Background Art

[0002] In concrete construction, sand and gravel aggregates of different particle sizes must be mixed and proportioned to form concrete. Whether it is natural sand and gravel or machine-made sand and gravel, a vibrating screen must be used to screen the sand and gravel during the mining and production process.

[0003] During the use of the vibrating screen, the mesh size of the vibrating screen sometimes needs to be changed. In the prior art, see Chinese patent announcement number CN105312229A, the mesh size is changed by displacing two screens. When there is no space for the two screens to displace relative to each other, the mesh size cannot be changed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a control method for screening sand and gravel with a sand and gravel vibrating screen.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a control method for screening sand and gravel using a sand and gravel vibrating screen, comprising:

[0007] The installation frame is fixed on the construction ground through supporting feet, and the electric telescopic rods A and B clamp the sides of the screen surface oppositely, so that the screen surface is rigidly supported in the installation frame;

[0008] The rolling rod rolls under the screen surface, so that when the hole-adjusting protrusions of different widths correspond to the screen holes, the size of the screen holes is changed;

[0009] The vibrator installed on the side of the frame generates vibration to screen the sand and gravel on the screen surface into sand and gravel aggregates of different particle sizes.

[0010] The sieve surface is provided with sieve holes;

[0011] Rotatable rolling rods are installed at intervals below the screen surface. There are multiple rolling rods, so that each rolling rod corresponds to the screen holes distributed in the same row on the screen surface. There are hole adjustment protrusions on the axial surface of the rolling rod. There are multiple hole adjustment protrusions distributed on the rolling rod at circumferential intervals, and the width of each hole adjustment protrusion is different.

[0012] One end of the rolling rod is rotatably mounted on a bearing A, and the bearing A is mounted on a support plate A through a bearing seat. Both ends of the support plate A are fixedly connected with a retractable telescopic member A, and the telescopic member A is fixedly connected with a support foot.

[0013] The other end of the rolling rod is rotatably mounted on the bearing B, and the bearing B is mounted on the support plate B through a bearing seat. A rotating motor is mounted on the support plate B, and the rotating motor drives the rolling rod to rotate on the bearings A and B.

[0014] A telescopic member B is fixed at the bottom of the support plate B, and the telescopic member B is fixed on the support plate C.

[0015] It also includes an installation frame with an installation groove, and the screen surface is installed in the installation groove of the installation frame.

[0016] A vibrator for providing vibration is installed on the side of the installation frame.

[0017] The beneficial effect of the present invention is that the rolling rod rolls under the screen surface, so that when the hole-adjusting protrusions of different widths correspond to the screen holes, the size of the screen holes can be changed to meet the screening of different sand and gravel particle sizes. Since the rolling rod rolls under the screen surface without being displaced in the horizontal plane, the problem that the size of the screen holes cannot be changed when there is no space for relative displacement and misalignment of the two screens is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front structural schematic diagram of the present invention;

[0019] Figure 2 It is a rear view structural schematic diagram of the present invention;

[0020] Figure 3 It is a front view structural schematic diagram of the rolling rod and the screen surface distribution of the present invention;

[0021] Figure 4 It is a rear view structural schematic diagram of the rolling rod and the screen surface distribution of the present invention;

[0022] Figure 5 It is a side view schematic diagram of the installation frame and the screen surface distribution of the present invention;

[0023] Figure 6 It is a side view schematic diagram of the elastic member, the electric telescopic rod, and the electric telescopic rod B of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the support assembly of the present invention supporting a rigid pipe;

[0025] Figure 8 is a top view schematic diagram of a support assembly of the present invention supporting a rigid pipe;

[0026] In the figure: 1-screen surface; 11-screen hole; 2-rolling rod; 21-hole adjustment protrusion; 31-bearing A; 32-support plate A; 33-telescopic part A; 34-support foot; 35-bearing B; 36-support plate B; 37-rotating motor; 38-telescopic part B; 4-installation frame; 41-elastic part; 42-electric telescopic rod A; 43-electric telescopic rod B; 7-vibrator; 5-negative pressure generating component; 51-flexible pipe A; 52-rigid pipe; 53-flexible pipe B; 6-support component; 61-support groove; 62-threaded telescopic rod; 63-bearing D; 64-clamping block; 65-adjusting bolt; 66-rotating adjustment wheel; 67-bearing E. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0028] like Figures 1 to 8 shown.

[0029] A vibrating screen structure with adjustable screen holes in the present application comprises:

[0030] A screen surface 1 having screen holes 11 is provided with rotatable rolling rods 2 installed at intervals below the screen surface 1. The rolling rods 2 are multiple, so that each rolling rod 2 corresponds to the screen holes 11 distributed in the same row in the longitudinal direction on the screen surface 1. The rolling rods 2 have hole adjustment protrusions 21 on the axial outer surface. The hole adjustment protrusions 21 are multiple and distributed on the rolling rods 2 at intervals on the circumference, and the width of each hole adjustment protrusion 21 is different. The hole adjustment protrusions 21 with different widths are transitioned by arc surfaces.

[0031] The rolling rod 2 rolls under the screen surface 1, so that when the hole-adjusting protrusions 21 of different widths correspond to the screen holes 11, the size of the screen holes 11 is changed to meet the screening of different sand and gravel particle sizes. Since the rolling rod 2 rolls under the screen surface 1 without being displaced in the horizontal plane, the problem that the size of the screen holes cannot be changed when there is no space for relative displacement and misalignment of the two screens is solved.

[0032] One end of the rolling rod 2 is rotatably mounted on a bearing A31, and the bearing A31 is mounted on a support plate A32 through a bearing seat. Both ends of the support plate A32 are fixedly connected with a retractable telescopic member A33, and the telescopic member A33 is fixedly connected with a support foot 34;

[0033] The other end of the rolling rod 2 is rotatably mounted on the bearing B35, and the bearing B35 is mounted on the support plate B36 through a bearing seat. A rotating motor 37 is mounted on the support plate B36, and the rotating motor 37 drives the rolling rod 2 to rotate on the bearings A31 and B35;

[0034] A telescopic member B38 is fixed at the bottom of the support plate B36, and the telescopic member B38 is fixed on the support plate C39; when the rolling rod 2 rotates and corresponds to the adjustment hole protrusion 21 of different widths, the telescopic member B38 and the telescopic member A33 descend, and the rolling rod 2 descends a certain height to obtain vertical space for rotation.

[0035] The present invention discloses a blocking-proof screening mesh structure for screening sand and gravel, comprising:

[0036] The screen surface 1 and the rolling rod 2, the rolling rod 2 has a hole adjustment protrusion 21 on its axial outer surface, the screen surface 1 has screen holes 11, and the rolling rod 2 corresponds to the screen holes 11 distributed in the same row on the screen surface 1 in the longitudinal direction;

[0037] The installation frame 4 also includes an installation slot, and the left and right sides of the screen surface 1 are installed in the installation slot of the installation frame 4 through elastic members 41 that can be elastically deformed, and the elastic members 41 are elastic rubber blocks. The installation frame 4 is correspondingly installed with electric telescopic rods A42 and electric telescopic rods B43 on the upper and lower sides, and the electric telescopic rods A42 and electric telescopic rods B43 clamp the sides of the screen surface 1 oppositely.

[0038] When there is an obstruction in the screen hole 11, the electric telescopic rod A42 and the electric telescopic rod B43 move away from the side of the screen surface 1 and no longer clamp it. The screen surface 1 is supported in the installation frame 4 by the elastic member 41, and the hole adjustment protrusion 21 is rotated by the rolling rod 2 to lift the obstruction. At this time, the screen surface 1 is buffered by the elastic member 41 to prevent the hole adjustment protrusion 21 from pressing against the obstruction too hard and causing damage to the screen surface 1.

[0039] Support legs 34 are fixed at both ends of the bottom of the two installation frames 4, and the support legs 34 are used to be fixed to the construction ground.

[0040] A vibrator 7 for providing vibration is installed on the side of the installation frame 4. When the screen holes 11 of the screen surface 1 are normally screened, the electric telescopic rods A42 and the electric telescopic rods B43 clamp the sides of the screen surface 1, so that the screen surface 1 is in a rigid support state; when the blockage needs to be cleared, the electric telescopic rods A42 and the electric telescopic rods B43 move away from the sides of the screen surface 1 and no longer clamp them. The screen surface 1 is supported in the installation frame 4 by the elastic member 41. At this time, the screen surface 1 is in a flexible damping support state.

[0041] The present application discloses a device for cleaning debris on the mesh surface of a vibrating screen, comprising:

[0042] The negative pressure generating component 5 is composed of the main part of the vacuum cleaner, and the negative pressure port of the negative pressure generating component 5 is connected to the flexible pipe A51, the flexible pipe A51 is connected to the rigid pipe 52, the rigid pipe 52 is connected to the flexible flexible pipe B53, and there is a screen surface 1 below the pipe mouth of the flexible pipe B53, and both sides of the screen surface 1 are installed in the installation frame 4; the bottom of the installation frame 4 is fixed with a supporting foot 34.

[0043] It also includes a support assembly 6 for supporting the rigid pipe 52; the support assembly 6 includes a support groove 61 for accommodating the rigid pipe 52 in a recessed state, a retractable threaded telescopic rod 62 is fixed to the bottom of the support groove 61, the bottom of the threaded telescopic rod 62 is installed in the bearing D63, and the threaded telescopic rod 62 is rotatable in the bearing D63.

[0044] A clamping block 64 is installed in the support groove 61, and an adjusting bolt 65 is screwed into the support groove 61 at the clamping block 64, and a rotating adjusting wheel 66 is fixed to the adjusting bolt 65. A bearing E67 is fixed to the clamping block 64, and the adjusting bolt 65 is installed with the bearing E67. The adjusting bolt 65 is rotatably installed with the clamping block 64 through the bearing E67. The adjusting bolt 65 is screwed into the threaded through hole on the support groove 61, and the clamping block 64 is driven to clamp the rigid pipe 52 against the support groove 61.

[0045] The negative pressure generating component 5 generates negative pressure, and the flexible pipe B53 bends to absorb and clean the debris on the screen surface 1. After cleaning, the supporting groove member 61 rotates in the bearing D63 according to the supporting groove member 61, and rotates with the flexible pipe A51, the rigid pipe 52, and the flexible pipe B53 to the side space of the screen surface 1, and is no longer on the screen surface 1.

[0046] A control method for screening sand and gravel by a sand and gravel vibrating screen of the present application comprises:

[0047] The mounting frame 4 is fixed to the construction ground by the support legs 34, and the electric telescopic rods A42 and B43 clamp the sides of the screen surface 1 opposite to each other, so that the screen surface 1 is rigidly supported in the mounting frame 4;

[0048] The rolling rod 2 rolls under the screen surface 1, so that when the hole-adjusting protrusions 21 with different widths correspond to the screen holes 11, the size of the screen holes 11 is changed;

[0049] The vibrator 7 on the side of the mounting frame 4 generates vibration to screen the sand and gravel on the screen surface 1 into sand and gravel aggregates of different particle sizes.

Claims

1. A method for controlling a sandstone vibrating screen to screen sandstone, characterized in that: include: The installation frame (4) is fixed to the construction ground through the support legs (34), and the electric telescopic rod A (42) and the electric telescopic rod B (43) clamp the side of the screen surface (1) in opposite directions, so that the screen surface (1) is rigidly supported in the installation frame (4); The rolling rod (2) rolls below the screen surface (1), so that when the hole-adjusting protrusions (21) of different widths correspond to the screen holes (11), the size of the screen holes (11) is changed; The vibrator (7) on the side of the mounting frame (4) generates vibrations to screen the sand and gravel on the screen surface (1) into sand and gravel aggregates of different particle sizes.

2. The control method for screening sand and gravel by a sand and gravel vibrating screen according to claim 1, characterized in that: The sieve surface (1) is provided with sieve holes (11); Rotatable rolling rods (2) are installed at intervals below the screen surface (1), and the rolling rods (2) are multiple, so that each rolling rod (2) corresponds to the screen holes (11) distributed in the same row in the longitudinal direction on the screen surface (1). The axial surface of the rolling rod (2) has a hole adjustment protrusion (21), and the hole adjustment protrusion (21) is distributed on the rolling rod (2) at intervals on the circumference, and the width of each hole adjustment protrusion (21) is different.

3. The control method for screening sand and gravel by a sand and gravel vibrating screen as claimed in claim 2, characterized in that: One end of the rolling rod (2) is rotatably mounted on a bearing A (31), and the bearing A (31) is mounted on a support plate A (32) via a bearing seat. Both ends of the support plate A (32) are fixedly connected with a retractable telescopic member A (33), and the telescopic member A (33) is fixedly connected with a support foot (34).

4. The control method for screening sand and gravel by a sand and gravel vibrating screen as claimed in claim 3, characterized in that: The other end of the rolling rod (2) is rotatably mounted on a bearing B (35), and the bearing B (35) is mounted on a support plate B (36) through a bearing seat. A rotating motor (37) is mounted on the support plate B (36), and the rotating motor (37) drives the rolling rod (2) to rotate on the bearing A (31) and the bearing B (35).

5. The control method for screening sand and gravel by a sand and gravel vibrating screen as claimed in claim 4, characterized in that: A telescopic member B (38) is fixed to the bottom of the support plate B (36), and the telescopic member B (38) is fixed on the support plate C (39).

6. The control method for screening sand and gravel by a sand and gravel vibrating screen as claimed in claim 2, characterized in that: It also includes an installation frame (4) having an installation groove, and the screen surface (1) is installed in the installation groove of the installation frame (4).

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