Sand screening machine for commercial concrete production

Abstract

The utility model discloses a sand screening machine for commercial concrete production, and relates to the technical field of commercial concrete production equipment. The vibrating mechanism is arranged at the upper part of the base; the screening mechanism comprises a mounting plate connected with the power output end of the vibrating mechanism, two sliding frames and two rotating frames which are oppositely and fixedly mounted at the upper part of the mounting plate, and a plurality of screening plates and a material receiving groove which are sequentially arranged between the two sliding frames and the two rotating frames in the vertical direction, and screening holes of the screening plates are gradually reduced from top to bottom; the sieve plates and the material receiving groove are semi-through grooves, the sieve plates and the material receiving groove are obliquely arranged downwards from the closed ends to the open ends, the sieve plates correspond to the closed ends of the material receiving groove in a one-to-one mode and are movably connected with the two sliding frames through the two sliding pieces, and the sieve plates and the open ends of the material receiving groove are rotationally connected between the two rotating frames. The top of each sliding frame is fixedly provided with a telescopic piece, and the telescopic end of each telescopic piece is connected with the corresponding sliding piece.

Description

Technical Field

[0001] This utility model relates to the technical field of commercial concrete production equipment, specifically to a sand screening machine for commercial concrete production. Background Technology

[0002] Ready-mixed concrete, also known as commercial concrete, is a type of pre-mixed concrete produced at a batching plant according to the required mix proportions for a project, and then transported to the construction site. It is a widely used building material in modern construction projects. Before use, the sand in the concrete needs to be screened to separate the gravel, coarse sand, and fine sand to obtain sand of the appropriate particle size for use.

[0003] To achieve the above objectives, Chinese utility model patent CN218394647U discloses a sand screening machine for concrete production, which includes a movable base, a mounting frame fixedly installed on the movable base, a feed hopper and a screening mechanism installed sequentially from top to bottom on the mounting frame; the feed hopper is equipped with a crushing mechanism, which includes a first rotating rod, a stirring blade fixedly installed on the first rotating rod, a motor for driving the rotating rod, and a metering component, the metering component being located below the first rotating rod for controlling the amount of sand fed, and the output end of the motor being connected to any end of the first rotating rod; the screening mechanism includes a screening screen and a power component, the power component being used to drive the screening screen to vibrate, the screening screen being inclined, and the higher end of the screening screen being located below the feed hopper.

[0004] Although the aforementioned patent can screen sand in concrete, it can only screen sand of a single particle size and cannot screen sand of different particle sizes, resulting in limited screening effect. Moreover, the angle of its screening screen is fixed and cannot be adjusted, which means that the movement speed of sand on the screening screen is also fixed, reducing screening efficiency and speed, and making the sand screening machine less flexible in use. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a sand screening machine for commercial concrete production, which solves the problems of poor screening effect and low flexibility of existing sand screening machines.

[0006] A sand screening machine for commercial concrete production, comprising:

[0007] Base;

[0008] The vibration mechanism is located on the upper part of the base; and

[0009] The screening mechanism includes a mounting plate connected to the power output end of a vibration mechanism, two sliding frames and two rotating frames fixedly mounted on the upper part of the mounting plate, and a plurality of screen plates and a receiving trough arranged vertically between the two sliding frames and the two rotating frames. The screen holes of the plurality of screen plates gradually decrease from top to bottom. The plurality of screen plates and the receiving trough are semi-through troughs. The plurality of screen plates and the receiving trough are arranged inclined downward from their closed ends to their open ends. The closed ends of the plurality of screen plates and the receiving trough are movably connected to the two sliding frames through two sliding parts. The open ends of the plurality of screen plates and the receiving trough are rotatably connected between the two rotating frames. Each sliding frame has a telescopic component fixedly installed on its top, and the telescopic end of the telescopic component is connected to the corresponding sliding component.

[0010] Compared with the prior art, this utility model has the following beneficial effects: When in use, the vibration mechanism is activated to drive several screen plates and the receiving trough to vibrate. Then, sand is poured in from the hopper. The sand falls and is screened by several screen plates, and sand of different particle sizes is screened out, which has a good screening effect. Moreover, each telescopic component drives the corresponding sliding component to move vertically on the sliding frame, so that several screen plates and the receiving trough rotate relative to the rotating frame, thereby changing the screening angle between several screen plates and the receiving trough, so as to change the movement speed of sand on the screening screen, improve the screening speed and the flexibility of use.

[0011] Preferably, each of the two opposing side walls of the sliding frame is provided with a vertically oriented strip groove, and each of the screen plates and the closed end of the receiving trough is provided with a rolling groove along its arrangement direction on both opposing side walls. Each sliding member includes a sliding strip slidably installed in the corresponding strip groove. Several rollers are rotatably installed on the sliding strip along its length direction via a rotating shaft. The rollers are rotatably connected to the rolling grooves located on the same side of the screen plates. The telescopic end of the telescopic member freely passes into the corresponding strip groove and is fixedly connected to the sliding strip.

[0012] Preferably, the telescopic component includes a telescopic cylinder fixedly installed on the top of the corresponding sliding frame, and the telescopic end of the telescopic cylinder freely passes into the corresponding strip groove and is fixedly connected to the sliding strip.

[0013] Preferably, the upper fixed cover of the base is provided with a support cover, and the vibration mechanism includes two fixed columns that are fixedly installed in parallel between the inner wall of the top of the support cover and the base, an installation component that is elastically slidably installed on the two fixed columns, a driving component that is fixedly installed in the installation component, two eccentric rotating components that are respectively installed on both sides of the installation component, and two connecting components that are fixedly installed on the installation component in opposite directions. The power output end of the driving component freely passes through the installation component and is connected to the two eccentric rotating components. The two connecting components freely pass through the support cover and are fixedly connected to the mounting plate.

[0014] Preferably, the mounting component includes a mounting block slidably sleeved between two fixed posts, each fixed post being fitted with two springs, each spring being elastically connected between the mounting block and the inner wall of the top of the support cover or between the mounting block and the base, the driving component being disposed inside the mounting block, the two eccentric rotating components being disposed on both sides of the mounting block respectively, and the two connecting components being fixedly connected to the two opposing side walls of the mounting block in a one-to-one correspondence, with the two connecting components and the two eccentric rotating components located on different sides of the mounting block.

[0015] Preferably, the driving component includes a dual-head motor fixedly installed in the mounting block, and the two power output shafts of the dual-head motor freely pass through the mounting block and are connected to the two eccentric rotating components one by one.

[0016] Preferably, each of the eccentric rotating components includes an eccentric block that is fixedly connected to the corresponding power output shaft of the dual-head motor.

[0017] Preferably, each of the connectors includes a connecting plate at one end that is fixedly connected to the mounting block, and the other end of the connecting plate freely passes through the support cover and is fixedly connected to the mounting plate.

[0018] Preferably, the base includes an L-shaped plate, the support cover and the two fixed columns are fixedly connected to the upper part of the horizontal section of the L-shaped plate, a number of casters are rotatably installed on the lower part of the horizontal section of the L-shaped plate, and a hopper is fixedly installed on the free end of the vertical section of the L-shaped plate.

[0019] Preferably, a discharge pipe is vertically fixedly installed on the discharge end of the hopper, and the discharge pipe is located directly above the closed ends of several sieve plates.

[0020] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0021] Figure 1 This is a front view of one embodiment of the present invention.

[0022] Figure 2 for Figure 1 A sectional view.

[0023] Figure 3 for Figure 1 A cross-sectional view of the vibration mechanism.

[0024] Figure 4 for Figure 2 A schematic diagram of the middle sliding bar.

[0025] The numbers in the diagram are as follows: 1. L-shaped plate; 11. Caster wheel; 2. Support cover; 21. Fixed column; 22. Spring; 23. Mounting block; 24. Dual-head motor; 25. Eccentric block; 26. Connecting plate; 3. Mounting plate; 31. Sliding frame; 32. Rotating frame; 33. Strip groove; 34. Sliding strip; 35. Roller; 36. Rotating shaft; 4. Screen plate; 5. Receiving trough; 6. Rolling trough; 7. Telescopic cylinder; 8. Discharge hopper; 81. Discharge pipe. Detailed Implementation

[0026] To make the technical means, creative features, achieved objectives and functions of this utility model clearer and easier to understand, the utility model will be further described below with reference to the accompanying drawings and specific embodiments:

[0027] like Figure 1-2 As shown, an embodiment of this utility model provides a sand screening machine for commercial concrete production, including: a base; a vibration mechanism disposed on the upper part of the base; and a screening mechanism, which includes a mounting plate 3 connected to the power output end of the vibration mechanism, two sliding frames 31 and two rotating frames 32 fixedly mounted on the upper part of the mounting plate 3, and a plurality of screen plates 4 and receiving troughs 5 arranged vertically between the two sliding frames 31 and the two rotating frames 32. The screen holes of the plurality of screen plates 4 gradually decrease from top to bottom. The plurality of screen plates 4 and receiving troughs 5 are semi-through troughs. The plurality of screen plates 4 and receiving troughs 5 are arranged inclined downward from their closed ends to their open ends. The closed ends of the plurality of screen plates 4 and receiving troughs 5 are movably connected to the two sliding frames 31 through two sliding parts. The open ends of the plurality of screen plates 4 and receiving troughs 5 are rotatably connected between the two rotating frames 32. Each sliding frame 31 is fixedly mounted with a telescopic component on its top, and the telescopic end of the telescopic component is connected to the corresponding sliding component.

[0028] Sand is poured into the hopper 8 and falls through several screen plates 4 for screening, separating sand of different particle sizes. This provides a good screening effect. Furthermore, each telescopic component drives the corresponding sliding component to move vertically on the sliding frame 31, causing the screen plates 4 and the receiving trough 5 to rotate relative to the rotating frame 32. This changes the screening angle between the screen plates 4 and the receiving trough 5, thereby altering the movement speed of the sand on the screening screen, improving the screening speed and the flexibility of use.

[0029] like Figure 1-2 as well as Figure 4As shown, according to another embodiment of the present invention, the sand screening machine for commercial concrete production further optimizes its sliding parts and telescopic parts. On the two opposing side walls of the two sliding frames 31, strip grooves 33 are provided in the vertical direction. On the two opposing side walls of the closed end of each screen plate 4 and receiving trough 5, rolling grooves 6 are provided in their arrangement direction. Each sliding part includes a sliding strip 34 slidably installed in the corresponding strip groove 33. Several rollers 35 are rotatably installed on the sliding strip 34 along its length direction via a rotating shaft 36. The rollers 35 are rotatably connected to several rolling grooves 6 located on the same side of the screen plates 4. The telescopic end of the telescopic part freely passes into the corresponding strip groove 33 and is fixedly connected to the sliding strip 34.

[0030] The telescopic component includes a telescopic cylinder 7 fixedly installed on the top of the corresponding sliding frame 31. The telescopic end of the telescopic cylinder 7 freely passes into the corresponding strip groove 33 and is fixedly connected to the sliding strip 34.

[0031] During the process of the telescopic cylinder 7 driving the sliding bar 34 to slide, each roller 35 on each sliding bar 34 rolls in the corresponding rolling groove 6, which at the same time drives several screen plates 4 and receiving grooves 5 to rotate, thereby completing the adjustment of the screening angle of several screen plates 4 and receiving grooves 5.

[0032] like Figure 2-3 As shown, according to another embodiment of the present invention, the vibration mechanism of the sand screening machine for commercial concrete production is further optimized. The upper part of the base is fixedly covered with a support cover 2. The vibration mechanism includes two fixed columns 21 that are parallel and fixedly installed between the inner wall of the top of the support cover 2 and the base, an installation component that is elastically slidably installed on the two fixed columns 21, a driving component that is fixedly installed in the installation component, two eccentric rotating components that are respectively installed on both sides of the installation component, and two connecting components that are fixedly installed on the installation component in opposite directions. The power output end of the driving component freely passes through the installation component and is connected to the two eccentric rotating components. The two connecting components freely pass through the support cover 2 and are fixedly connected to the mounting plate 3.

[0033] The mounting component includes a mounting block 23 slidably sleeved between two fixed posts 21. Each fixed post 21 is fitted with two springs 22. Each spring 22 is elastically connected between the mounting block 23 and the inner wall of the top of the support cover 2 or between the mounting block 23 and the base. The driving component is located inside the mounting block 23. The two eccentric rotating components are respectively located on both sides of the mounting block 23. The two connecting components are fixedly connected to the two opposing side walls of the mounting block 23 in a one-to-one correspondence. The two connecting components and the two eccentric rotating components are located on different sides of the mounting block 23.

[0034] The driving component includes a dual-head motor 24 fixedly installed in the mounting block 23. The two power output shafts of the dual-head motor 24 freely pass through the mounting block 23 and are connected to the two eccentric rotating components one by one.

[0035] Each of the aforementioned eccentric rotating components includes an eccentric block 25 that is fixedly connected to the power output shaft corresponding to the dual-head motor 24.

[0036] Each of the connectors includes a connecting plate 26 with one end fixedly connected to the mounting block 23, and the other end of the connecting plate 26 freely passes through the support cover 2 and is fixedly connected to the mounting plate 3.

[0037] The dual-head motor 24 drives the two eccentric blocks 25 to rotate, which generates eccentric vibration force during the rotation of the two eccentric blocks 25. This causes the mounting block 23 to have an elastic interaction with each spring 22, so that the mounting block 23 vibrates back and forth along the two fixed columns 21. This, in turn, drives the mounting plate 3, the two sliding frames 31, the two rotating frames 32, the several screen plates 4, and the receiving trough 5 to vibrate through the two connecting plates 26.

[0038] like Figure 1-2 As shown, according to another embodiment of the present invention, the sand screening machine for commercial concrete production preferably includes an L-shaped plate 1 as the base. The support cover 2 and two fixed columns 21 are fixedly connected to the upper part of the horizontal section of the L-shaped plate 1. Several universal wheels 11 are rotatably installed on the lower part of the horizontal section of the L-shaped plate 1, which can facilitate the movement of the entire sand screening machine and improve the flexibility of use. A feeding hopper 8 is fixedly installed on the free end of the vertical section of the L-shaped plate 1. Preferably, a discharge pipe 81 is vertically fixedly installed on the discharge end of the feeding hopper 8. The discharge pipe 81 is located directly above the closed end of several screen plates 4. The discharge pipe 81 reduces the potential energy of the sand when it falls, which can ensure that the sand does not splash on the screen plate 4 over a large area.

[0039] The working principle of this utility model is as follows: When this utility model is used, the dual-head motor 24 is started to drive the two eccentric blocks 25 to rotate, so that the two eccentric blocks 25 generate eccentric vibration force during rotation, which causes the mounting block 23 to have an elastic effect with each spring 22, so that the mounting block 23 vibrates back and forth along the two fixed columns 21. This, in turn, drives the mounting plate 3, the two sliding frames 31, the two rotating frames 32, several screen plates 4 and the receiving trough 5 to vibrate through the two connecting plates 26. Then, the sand is poured in from the discharge hopper 8 and passes through the discharge pipe 8. 1. The sand falls onto the top screen plate 4, and then passes through several screen plates 4 in sequence to vibrate and screen, separating sand of different particle sizes. Finally, the sand on each screen plate 4 and the sand falling into the receiving trough 5 are collected separately. During the screening process, the sliding strip 34 can be driven to slide by starting the telescopic cylinder 7, so that each roller 35 on each sliding strip 34 rolls in the corresponding rolling groove 6, and at the same time drives several screen plates 4 and the receiving trough 5 to rotate, thereby completing the adjustment of the screening angle of several screen plates 4 and the receiving trough 5.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A sand screening machine for commercial concrete production, characterized in that, include: Base; The vibration mechanism is located on the upper part of the base; as well as The screening mechanism includes a mounting plate (3) connected to the power output end of the vibration mechanism, two sliding frames (31) and two rotating frames (32) fixedly mounted on the upper part of the mounting plate (3), and a plurality of screen plates (4) and a receiving trough (5) arranged vertically between the two sliding frames (31) and the two rotating frames (32). The screen holes of the plurality of screen plates (4) gradually decrease from top to bottom. The plurality of screen plates (4) and the receiving trough (5) are semi-through troughs. The plurality of screen plates (4) and the receiving trough (5) are arranged inclined downward from their closed ends to their open ends. The closed ends of the plurality of screen plates (4) and the receiving trough (5) are movably connected to the two sliding frames (31) through two sliding parts. The open ends of the plurality of screen plates (4) and the receiving trough (5) are rotatably connected between the two rotating frames (32). Each sliding frame (31) is fixedly mounted with a telescopic component on its top. The telescopic end of the telescopic component is connected to the corresponding sliding component.

2. A sand screening machine for commercial concrete production according to claim 1, characterized in that, On the two opposing side walls of the two sliding frames (31), there are strip grooves (33) in the vertical direction. On the two opposing side walls of the closed end of each screen plate (4) and the receiving groove (5), there are rolling grooves (6) in the arrangement direction. Each sliding member includes a sliding strip (34) slidably installed in the corresponding strip groove (33). Several rollers (35) are rotatably installed on the sliding strip (34) along its length direction through a rotating shaft (36). Several rollers (35) are rotatably connected to several rolling grooves (6) located on the same side of several screen plates (4). The telescopic end of the telescopic member freely enters the corresponding strip groove (33) and is fixedly connected to the sliding strip (34).

3. A sand screening machine for commercial concrete production according to claim 2, characterized in that, The telescopic component includes a telescopic cylinder (7) fixedly installed on the top of the corresponding sliding frame (31). The telescopic end of the telescopic cylinder (7) freely passes into the corresponding strip groove (33) and is fixedly connected to the sliding strip (34).

4. A sand screening machine for commercial concrete production according to claim 1, characterized in that, The upper part of the base is fixedly covered with a support cover (2). The vibration mechanism includes two fixed columns (21) that are fixedly installed in parallel between the inner wall of the top of the support cover (2) and the base, an installation component that is elastically slidably installed on the two fixed columns (21), a drive component that is fixedly installed in the installation component, two eccentric rotating components that are respectively installed on both sides of the installation component, and two connecting components that are fixedly installed on the installation component in opposite directions. The power output end of the drive component freely passes through the installation component and is connected to the two eccentric rotating components. The two connecting components freely pass through the support cover (2) and are fixedly connected to the mounting plate (3).

5. A sand screening machine for commercial concrete production according to claim 4, characterized in that, The mounting component includes a mounting block (23) slidably sleeved between two fixed posts (21). Each fixed post (21) is fitted with two springs (22). Each spring (22) is elastically connected between the mounting block (23) and the inner top wall of the support cover (2) or between the mounting block (23) and the base. The driving component is located inside the mounting block (23). The two eccentric rotating components are respectively located on both sides of the mounting block (23). The two connecting components are fixedly connected to the two opposing side walls of the mounting block (23) in a one-to-one correspondence. The two connecting components and the two eccentric rotating components are located on different sides of the mounting block (23).

6. A sand screening machine for commercial concrete production according to claim 5, characterized in that, The driving component includes a dual-head motor (24) fixedly installed in the mounting block (23). The two power output shafts of the dual-head motor (24) freely pass through the mounting block (23) and are connected to the two eccentric rotating components one by one.

7. A sand screening machine for commercial concrete production according to claim 6, characterized in that, Each of the eccentric rotating components includes an eccentric block (25) that is fixedly connected to the corresponding power output shaft of the dual-head motor (24).

8. A sand screening machine for commercial concrete production according to claim 5, characterized in that, Each of the connectors includes a connecting plate (26) with one end fixedly connected to the mounting block (23), and the other end of the connecting plate (26) freely passes through the support cover (2) and is fixedly connected to the mounting plate (3).

9. A sand screening machine for commercial concrete production according to claim 4, characterized in that, The base includes an L-shaped plate (1), the support cover (2) and the two fixed columns (21) are fixedly connected to the upper part of the horizontal section of the L-shaped plate (1), and a number of universal wheels (11) are installed on the lower part of the horizontal section of the L-shaped plate (1) in a circumferential direction. A hopper (8) is fixedly installed on the free end of the vertical section of the L-shaped plate (1).

10. A sand screening machine for commercial concrete production according to claim 9, characterized in that, A discharge pipe (81) is vertically fixedly installed on the discharge end of the hopper (8), and the discharge pipe (81) is located directly above the closed end of several sieve plates (4).

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