Vibrating screening hopper capable of adjusting fineness modulus and sand yield

Abstract

The utility model relates to the technical field of vibratory screening hoppers, in particular to a vibratory screening hopper capable of adjusting fineness modulus and sand yield. The vibrating screening hopper comprises a vibrating screen assembly and a discharging assembly. The vibrating screen assembly comprises a vibrating part and a screen mesh assembly; the screen assembly is connected with the vibration part; the screen assembly comprises an upper-layer screen, a middle-layer screen and a lower-layer screen; the discharging assembly comprises a first chute, a second chute, a third chute and a discharging hopper. A feeding hole of the first chute is communicated with a discharging end of the upper-layer screen; a feeding hole of the second chute is communicated with a discharging end of the middle-layer screen; a feeding hole of the third chute is communicated with a discharging end of the lower-layer screen; and the discharge hopper is arranged below the lower-layer screen. The utility model can solve the problem that the existing vibration screening equipment is poor in granularity precision control in the aspect of adjusting the fineness modulus and the problem that the sand yield is insufficient due to the fact that the adjusting capability is limited in the aspect of adjusting the sand yield of a sand and stone production line.

Description

Technical Field

[0001] This utility model relates to the field of vibrating screen hopper technology, specifically to a vibrating screen hopper for adjusting fineness modulus and sand output. Background Technology

[0002] The fineness modulus of sand is an important indicator for evaluating the coarseness of sand particles and is of great significance for the quality control of concrete and mortar. A higher fineness modulus indicates coarser sand, and vice versa. In concrete engineering, the fineness modulus of sand directly affects the strength, durability, and workability of concrete. Specifically, when the fineness modulus of sand is between 2.3 and 3.0, the particle size distribution within this range is relatively uniform, which is beneficial for improving the quality and performance of asphalt concrete. During the sand-making process, the content of 3-5mm sand directly affects the fineness modulus; therefore, controlling the content of 3-5mm sand in the finished product can control the fineness modulus.

[0003] The adjustability of a sand and gravel production line can be affected by various factors such as equipment parameters, process flow, and raw material supply, which can limit the adjustability and lead to insufficient sand production. For example, once the process of a sand and gravel production line is determined, it is often impossible to adjust the proportion of finished sand within a specific particle size range in the total sand production; that is, the limited adjustability results in insufficient production of the corresponding proportion of finished sand.

[0004] Vibrating screens are widely used in building materials, mining, chemical, and metallurgical industries for screening and classifying various particulate materials. However, existing vibrating screens have limitations in adjusting the fineness modulus, especially when processing materials with complex particle size distributions, making it difficult to meet the requirements for precise particle size control. Furthermore, existing vibrating screens have limited adjustment capabilities in regulating sand production line output, leading to insufficient sand production.

[0005] In summary, it is necessary to develop a vibrating screen hopper that can adjust the fineness modulus and sand output to solve the problems of poor particle size accuracy control in the existing vibrating screen equipment in adjusting the fineness modulus and insufficient sand output due to limited adjustment capability in the sand and gravel production line. Utility Model Content

[0006] The purpose of this utility model is to provide a vibrating screen hopper for adjusting fineness modulus and sand output. The specific technical solution is as follows:

[0007] A vibrating screen hopper for adjusting fineness modulus and sand output includes a vibrating screen assembly and a discharge assembly;

[0008] The vibrating screen assembly includes a vibrating component and a screen assembly; the screen assembly is connected to the vibrating component; the screen assembly includes an upper screen, a middle screen, and a lower screen arranged at intervals from top to bottom with screen apertures decreasing sequentially.

[0009] The discharge assembly includes a first chute, a second chute, a third chute, and a discharge hopper; the inlet of the first chute is connected to the discharge end of the upper screen, and its discharge outlet is used to output the first finished material; the inlet of the second chute is connected to the discharge end of the middle screen, and its discharge outlet is used to output the second finished material; the inlet of the third chute is connected to the discharge end of the lower screen, and its discharge outlet is used to output the third finished material; the discharge hopper is located below the lower screen, and its inlet is used to collect the fourth finished material screened off by the lower screen, and output it through its discharge outlet.

[0010] Optionally, the second chute includes a first main chute and a first branch chute; the first branch chute is connected to the first chute; a first switching component is provided in the first main chute; the first switching component includes a first insert plate and a first driving component; the first insert plate is movably inserted into the first main chute along the cross section of the first main chute, and one end of the first insert plate located outside the first main chute is connected to the first driving component; the first driving component is used to link the first insert plate to realize the switching of the first main chute.

[0011] Optionally, the first drive assembly includes a first drive member, a first lead screw, and a first threaded sleeve; the first threaded sleeve is coaxially disposed on the first lead screw and connected to the first insert plate; the output end of the first drive member is connected to the end of the first lead screw away from the first insert plate.

[0012] Optionally, the third chute includes a second main chute and a second branch chute; the second branch chute is connected to the second chute; a second switching component is provided in the second branch chute; the second switching component includes a second insert plate and a second driving component; the second insert plate is movably inserted into the second branch chute along the cross section of the second branch chute, and one end of the second insert plate located outside the second branch chute is connected to the second driving component; the second driving component is used to link the second insert plate to realize the switching of the second branch chute.

[0013] Optionally, the second drive assembly includes a second drive member, a second lead screw, and a second threaded sleeve; the second threaded sleeve is coaxially disposed on the second lead screw and connected to the second insert plate; the output end of the second drive member is connected to the end of the second lead screw away from the second insert plate.

[0014] Optionally, the mesh size of the upper screen is about 20mm, such as 20±2mm, 20±3mm, 20±4mm, 20±5mm, 20±6mm, 20±7mm, 20±8mm, 20±9mm or 20±10mm, etc.

[0015] Optionally, the mesh size of the middle layer screen is about 5mm, such as 5±2mm, 5±3mm or 5±4mm.

[0016] Optionally, the mesh size of the lower screen is about 3mm, such as 3±1mm or 3±2mm.

[0017] Optionally, the vibrating screen hopper for adjusting fineness modulus and sand output further includes a return belt, a sand making machine, and a discharge belt; one end of the return belt is the feed end and is connected to the discharge port of the first chute or the discharge port of the second chute, and the other end of the return belt is the discharge end and is connected to the feed port of the sand making machine; one end of the discharge belt is the feed end and is connected to the discharge port of the sand making machine, and the other end of the discharge belt is the discharge end and is connected to the feed end of the upper screen.

[0018] Optionally, the vibrating screen assembly further includes a support frame; the support frame is connected to the upper screen, the middle screen, and the lower screen.

[0019] The application of the technical solution of this utility model has at least the following beneficial effects:

[0020] (1) The present invention provides a vibrating screen hopper for adjusting fineness modulus and sand output, which is composed of a vibrating screen assembly and a discharge assembly. That is, it is composed of a vibrating component, an upper screen, a middle screen and a lower screen with decreasing screen aperture, and a first chute, a second chute, a third chute and a discharge hopper. It can accurately control the particle size of the sand and accurately adjust the fineness modulus, thereby improving the quality of the screened sand.

[0021] (2) The vibrating screen hopper for adjusting fineness modulus and sand output provided by this utility model can adjust the proportion of finished sand within a certain particle size range in the total sand output by means of a first on / off component and a second on / off component, ensuring sufficient output of the corresponding proportion of finished sand, thus solving the problem of insufficient sand output caused by the limited adjustment capability of existing vibrating screen equipment in adjusting sand output of sand and gravel production lines. In addition, this utility model adjusts the sand output of sand and gravel production lines by means of a first on / off component and a second on / off component, which has good adjustment flexibility, does not require machine shutdown for adjustment, and greatly improves adjustment efficiency.

[0022] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The present utility model will now be described in further detail with reference to the figures. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0024] Figure 1 This is a schematic diagram of the structure of a vibrating screen hopper for adjusting fineness modulus and sand output in one embodiment;

[0025] Figure 2 This is a schematic diagram of the structure after the first main road chute and the first switching component are combined and installed in the embodiment;

[0026] Among them, 1. upper screen, 2. middle screen, 3. lower screen, 4. first chute, 5. second chute, 5.1 first main chute, 5.2 first branch chute, 6. third chute, 6.1 second main chute, 6.2 second branch chute, 7. discharge hopper, 8. first on / off assembly, 8.1 first insert plate, 8.2 first lead screw, 8.3 first threaded sleeve, 8.4 first drive component, 9. second on / off assembly, 10. return conveyor belt, 11. sand making machine, 12. discharge conveyor belt. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0028] Example:

[0029] See Figures 1-2 A vibrating screen hopper for adjusting fineness modulus and sand output includes a vibrating screen assembly and a discharge assembly.

[0030] The vibrating screen assembly includes a vibrating component and a screen assembly; the screen assembly is connected to the vibrating component; the screen assembly includes an upper screen 1, a middle screen 2, and a lower screen 3 arranged at intervals from top to bottom with decreasing screen apertures;

[0031] The discharge assembly includes a first chute 4, a second chute 5, a third chute 6, and a discharge hopper 7. The inlet of the first chute 4 is connected to the outlet of the upper screen 1, and its outlet is used to output the first finished product. The inlet of the second chute 5 is connected to the outlet of the middle screen 2, and its outlet is used to output the second finished product. The inlet of the third chute 6 is connected to the outlet of the lower screen 3, and its outlet is used to output the third finished product. The discharge hopper 7 is located below the lower screen 3, and its inlet is used to collect the fourth finished product screened off by the lower screen 3 and output it through its outlet.

[0032] The second chute 5 includes a first main chute 5.1 and a first branch chute 5.2; the first branch chute 5.2 is connected to the first chute 4; a first switching component 8 is provided inside the first main chute 5.1; the first switching component 8 includes a first insert plate 8.1 and a first driving component; the first insert plate 8.1 is movably inserted into the first main chute 5.1 along the cross-section of the first main chute 5.1, and one end of the first insert plate 8.1 located outside the first main chute 5.1 is connected to the first driving component; the first driving component is used to actuate the first insert plate 8.1 to realize the switching of the first main chute 5.1. The tube body of the first main chute 5.1 is a square tube structure, and a channel adapted to the first insert plate 8.1 is opened on the side wall of the tube body of the first main chute 5.1 so that the first insert plate 8.1 can be movably arranged along the cross-section of the first main chute 5.1 to realize the switching of the first main chute 5.1.

[0033] The first driving assembly includes a first driving component 8.4 (specifically, a motor can be selected), a first lead screw 8.2, and a first threaded sleeve 8.3; the first threaded sleeve 8.3 is coaxially mounted on the first lead screw 8.2 and connected to the first insert plate 8.1; the output end of the first driving component 8.4 is connected to the end of the first lead screw 8.2 away from the first insert plate 8.1, and is used to drive the first lead screw 8.2 to rotate so as to drive the first insert plate 8.1 linearly through the first threaded sleeve 8.3 to realize the opening and closing of the first main channel chute 5.1 and the adjustment of the opening size.

[0034] The third chute 6 includes a second main chute 6.1 and a second branch chute 6.2; the second branch chute 6.2 is connected to the second chute 5; a second switching component 9 is provided inside the second branch chute 6.2; the second switching component 9 includes a second insert plate and a second drive component; the second insert plate is movably inserted into the second branch chute 6.2 along its cross-section, and one end of the second insert plate located outside the second branch chute 6.2 is connected to the second drive component; the second drive component is used to actuate the second insert plate to achieve the switching on and off of the second branch chute 6.2. The tube body of the second branch chute 6.2 has a square tube structure, and a channel adapted to the second insert plate is opened on the side wall of the tube body of the second branch chute 6.2 so that the second insert plate can be movably installed along the cross-section of the second branch chute 6.2 to achieve the switching on and off of the second branch chute 6.2.

[0035] The second drive assembly includes a second drive element (specifically, a motor), a second lead screw, and a second threaded sleeve; the second threaded sleeve is coaxially mounted on the second lead screw and connected to the second insert plate; the output end of the second drive element is connected to the end of the second lead screw away from the second insert plate, and is used to drive the second lead screw to rotate so as to drive the second insert plate linearly in conjunction with the second threaded sleeve to realize the opening and closing of the second branch chute 6.2 and the adjustment of the opening size.

[0036] The mesh size of the upper screen 1 is about 20mm, and 20mm can be selected specifically.

[0037] The mesh size of the middle layer screen 2 is about 5mm, and 5mm can be selected specifically.

[0038] The mesh size of the lower screen 3 is about 3mm, and 3mm can be selected specifically.

[0039] The vibrating screen hopper for adjusting fineness modulus and sand output also includes a return belt 10, a sand making machine 11, and a discharge belt 12. One end of the return belt 10 is the feed end and is connected to the discharge port of the first chute 4 or the discharge port of the second chute 5. The other end of the return belt 10 is the discharge end and is connected to the feed port of the sand making machine 11. One end of the discharge belt 12 is the feed end and is connected to the discharge port of the sand making machine 11. The other end of the discharge belt 12 is the discharge end and is connected to the feed end of the upper screen 1.

[0040] The vibrating screen assembly also includes a support frame (i.e., a screen frame); the support frame is connected to the upper screen 1, the middle screen 2, and the lower screen 3 to provide connection and support for the upper screen 1, the middle screen 2, and the lower screen 3; the support frame is also connected to the vibrating component to provide support for the vibrating component.

[0041] The operating principle of the vibrating screen hopper for adjusting fineness modulus and sand output in precisely controlling the particle size of sand (i.e., precisely adjusting the fineness modulus) is as follows:

[0042] The sand making machine 11 conveys the produced sand to the upper screen 1 via the discharge belt 12. Under the action of the vibrating component, the sand with a particle size greater than or equal to the aperture of the upper screen 1 is the first finished product (particle size 20~40mm) and is output through the first chute 4; the sand with a particle size less than or equal to the aperture of the upper screen 1 is the second finished product (particle size 5~20mm) and is output through the second chute 5; the sand with a particle size greater than or equal to the aperture of the middle screen 2 is the second finished product and is output through the second chute 5; the sand with a particle size less than or equal to the aperture of the middle screen 2 is the third finished product (particle size 3~5mm) and is output through the third chute 6; the sand with a particle size greater than or equal to the aperture of the lower screen 3 is the third finished product and is output through the third chute 6; and the sand with a particle size less than or equal to the aperture of the lower screen 3 is the fourth finished product (particle size 0~3mm) and is output through the discharge hopper 7.

[0043] The operating principle of the vibrating screen hopper for adjusting fineness modulus and sand output in regulating sand output in the sand and gravel production line (i.e., ensuring sufficient output of the corresponding proportion of finished sand) is as follows:

[0044] The proportion of finished sand with a certain particle size range in the sand output can be adjusted by using the first on / off component 8 and the second on / off component 9 to ensure that the output of finished sand with the corresponding proportion is sufficient.

[0045] If the aggregate production requires a specific ratio of first finished material (particle size of 20~40mm) and second finished material (particle size of 5~20mm), and the output of second finished material is insufficient in the sand production, the first driving component 8.4 drives the first lead screw 8.2 to rotate, thereby driving the first threaded sleeve 8.3 to linearly drive the first insert plate 8.1 to close the first main road chute 5.1, or drives the first insert plate 8.1 to partially close the first main road chute 5.1, that is, to allow all or part of the second finished material to flow out through the first branch road chute 5.2 and the first chute 4, thereby obtaining a specific ratio of first finished material and second finished material, ensuring that the output of the corresponding proportion of finished sand is sufficient;

[0046] If the aggregate production requires a specific proportion of second finished material (particle size 5~20mm) and third finished material (particle size 3~5mm), and the proportion of third finished material production in sand production is insufficient, the second driving component drives the second lead screw to rotate, thereby driving the second insert plate linearly to open the second branch chute 6.2. Alternatively, the second insert plate is driven to partially open the second branch chute 6.2, so that all or part of the third finished material flows out through the second branch chute 6.2 and the second chute 5, thereby obtaining a specific proportion of second and third finished materials and ensuring that the corresponding proportion of finished material production is sufficient.

[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A vibrating screen hopper for adjusting fineness modulus and sand output, characterized in that, Includes vibrating screen assembly and discharge assembly; The vibrating screen assembly includes a vibrating component and a screen assembly; the screen assembly is connected to the vibrating component; the screen assembly includes an upper screen (1), a middle screen (2) and a lower screen (3) arranged at intervals from top to bottom with decreasing screen apertures. The discharge assembly includes a first chute (4), a second chute (5), a third chute (6), and a discharge hopper (7); the inlet of the first chute (4) is connected to the discharge end of the upper screen (1), and its discharge outlet is used to output the first finished material; the inlet of the second chute (5) is connected to the discharge end of the middle screen (2), and its discharge outlet is used to output the second finished material; the inlet of the third chute (6) is connected to the discharge end of the lower screen (3), and its discharge outlet is used to output the third finished material; the discharge hopper (7) is located below the lower screen (3), and its inlet is used to collect the fourth finished material screened off by the lower screen (3), and output it through its discharge outlet.

2. The vibrating screen hopper for adjusting fineness modulus and sand output according to claim 1, characterized in that, The second chute (5) includes a first main chute (5.1) and a first branch chute (5.2); the first branch chute (5.2) is connected to the first chute (4); a first switching component (8) is provided in the first main chute (5.1); the first switching component (8) includes a first insert plate (8.1) and a first drive component; the first insert plate (8.1) is movably inserted into the first main chute (5.1) along the cross section of the first main chute (5.1), and one end of the first insert plate (8.1) located outside the first main chute (5.1) is connected to the first drive component; the first drive component is used to link the first insert plate (8.1) to realize the switching of the first main chute (5.1).

3. The vibrating screen hopper for adjusting fineness modulus and sand output according to claim 2, characterized in that, The first drive assembly includes a first drive member (8.4), a first lead screw (8.2), and a first threaded sleeve (8.3); the first threaded sleeve (8.3) is coaxially disposed on the first lead screw (8.2) and connected to the first insert plate (8.1); the output end of the first drive member (8.4) is connected to the end of the first lead screw (8.2) away from the first insert plate (8.1).

4. The vibrating screen hopper for adjusting fineness modulus and sand output according to claim 1, characterized in that, The third chute (6) includes a second main chute (6.1) and a second branch chute (6.2); the second branch chute (6.2) is connected to the second chute (5); a second switching component (9) is provided in the second branch chute (6.2); the second switching component (9) includes a second insert plate and a second drive component; the second insert plate is movably inserted into the second branch chute (6.2) along the cross section of the second branch chute (6.2), and one end of the second insert plate located outside the second branch chute (6.2) is connected to the second drive component; the second drive component is used to link the second insert plate to realize the switching of the second branch chute (6.2).

5. The vibrating screen hopper for adjusting fineness modulus and sand output according to claim 4, characterized in that, The second drive assembly includes a second drive member, a second lead screw, and a second threaded sleeve; the second threaded sleeve is coaxially disposed on the second lead screw and connected to the second insert plate; the output end of the second drive member is connected to the end of the second lead screw away from the second insert plate.

6. The vibrating screen hopper for adjusting fineness modulus and sand output according to any one of claims 1 to 5, characterized in that, It also includes a return belt (10), a sand making machine (11), and a discharge belt (12); one end of the return belt (10) is the feed end and is connected to the discharge port of the first chute (4) or the discharge port of the second chute (5), and the other end of the return belt (10) is the discharge end and is connected to the feed port of the sand making machine (11); one end of the discharge belt (12) is the feed end and is connected to the discharge port of the sand making machine (11), and the other end of the discharge belt (12) is the discharge end and is connected to the feed end of the upper screen (1).

7. The vibrating screen hopper for adjusting fineness modulus and sand output according to claim 6, characterized in that, The vibrating screen assembly also includes a support frame; the support frame is connected to the upper screen (1), the middle screen (2) and the lower screen (3).

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