A sand and gravel screening device for mortar production

Abstract

A sand and gravel screening device for mortar production, relating to the technical field of mortar production equipment, comprises two filter screens arranged vertically within a screening cylinder. The filter screens are spirally descending. The mesh diameter of the upper filter screen is larger than that of the lower filter screen. A deflecting discharge rack is fixed to the annular wall of the screening cylinder, with its opening facing forward. Three baffles are fixed in front of and behind the lower discharge plate. A collection mechanism is located at the bottom of the screening cylinder. A vibration mechanism is located on the screening cylinder and connected to a base. This device extends the screening path of the sand and gravel, allowing the raw materials to rotate and descend on the upper filter screen within the screening cylinder, thus improving screening efficiency. It also ensures that the sand and gravel are fully tumbled and screened on the filter screen, improving sorting accuracy and efficiency. Furthermore, it enables automatic separation and collection of large-diameter and medium-diameter sand and gravel, reducing manual intervention. The sand and gravel then fall into a collection tank after vibration, preventing dust from flying and facilitating centralized processing.

Description

Technical Field

[0001] This utility model relates to the technical field of mortar production equipment, specifically to a sand and gravel screening device for mortar production. Background Technology

[0002] In the mortar production process, sand and gravel raw materials need to be graded according to particle size to meet the mixing requirements. Traditional screening devices mostly use a single screen or manual sorting, which has problems such as low sorting efficiency and inconvenient collection. Although some equipment is equipped with dust removal function, the dust is easy to escape, and the mixed discharge of sand and gravel of different particle sizes requires secondary sorting, which increases the production cost. Therefore, a sand and gravel screening device for mortar production is proposed. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings and deficiencies of existing technologies by providing a sand and gravel screening device for mortar production. This device extends the screening path of the sand and gravel, allowing the raw materials to rotate and descend on the filter screen above the screening cylinder, thereby improving screening efficiency. It also enables the sand and gravel to tumble and screen fully on the filter screen, improving sorting accuracy and efficiency. Furthermore, it achieves automatic separation and collection of large-diameter sand and gravel from medium-diameter sand and gravel, reducing manual intervention. The sand and gravel are then vibrated and fall into the collection tank, preventing dust from flying and facilitating centralized processing.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a base, a screening cylinder, and a feeding hopper; the screening cylinder is provided on the base, and the feeding hopper is connected through the screening cylinder; It also includes: The filter screen consists of two screens, one above the other inside the screening cylinder. The screens are arranged in a spiral downward configuration. The lower end of the screen is connected to a discharge plate. There are two discharge ports, one above the other, on the annular wall of the screening cylinder. The discharge plate is inserted and fixed inside the discharge ports. The mesh diameter of the upper screen is larger than that of the lower screen. The first baffle is fixed to the inner top plate of the screening cylinder and is fixed to the upper end of the two filter screens. The second baffle is fixed between the upper and lower filter screens, and the upper end of the second baffle is fixed to the inner top plate of the screening cylinder. A rotating discharge rack is fixed to the annular wall of the screening cylinder, and the opening of the rotating discharge rack is facing forward. There are two No. 3 baffles, which are fixed in front of and behind the discharge plate below, respectively. A collection mechanism, wherein the collection mechanism is located at the bottom of the screening cylinder; A vibration mechanism is mounted on the screening cylinder and connected to the base.

[0005] Preferably, the collection mechanism comprises: A collection hopper, wherein the collection hopper is connected through to the bottom of the screening cylinder; The air outlet pipe is connected through the bottom of the collection hopper, and the outlet of the air outlet pipe is set to the left. A dustproof net is fixed to the outlet of the air duct; The connecting hopper is connected through to the bottom of the left end annular wall of the air outlet pipe; The collection tank is screwed to the bottom of the connecting hopper.

[0006] Preferably, the vibration mechanism comprises: A connecting ring, wherein the connecting ring is sleeved and fixed to the bottom of the ring wall of the screening cylinder; Support rods, wherein there are several support rods, which are respectively fixed to the bottom of the connecting ring in a ring-shaped distribution; The support tubes are of several types and are movably sleeved on the bottom of the support rod, and the support tubes are fixed on the base. The springs are numerous and are respectively sleeved on the support rod, with both ends of the springs fixed to the connecting ring and the support tube; Preferably, two vibration motors are fixed on the connecting ring, and the vibration motors are connected to an external power source.

[0007] Preferably, the No. 1 blower is fixed to the base by a bracket and is located above the feed hopper; the No. 1 blower is connected to an external power source.

[0008] Preferably, several secondary fans are arranged in a ring on the frame wall of the primary fan. The secondary fans are arranged at an angle from high to low and from the inside to the outside. The secondary fans are connected to an external power source.

[0009] Compared with the prior art, the beneficial effects of this utility model are: 1. Extend the screening path of sand and gravel, so that the sand and gravel raw materials in the screening cylinder rotate and fall on the filter screen above, thereby improving screening efficiency; 2. Equipped with a vibration mechanism, the sand and gravel are fully tumbled and screened on the filter screen, improving sorting accuracy and efficiency; 3. Enables automatic separation and collection of large-diameter sand and gravel from medium-diameter sand and gravel, reducing manual intervention; 4. It is equipped with a collection mechanism, and the dust falls into the collection tank after vibration, which avoids dust flying and facilitates centralized treatment. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 This is the southwest isometric view of this utility model.

[0012] Figure 3 yes Figure 2 Enlarged view of part A in the image.

[0013] Figure 4 This is the southeast isometric view of this utility model.

[0014] Figure 5 This is a structural schematic diagram of the filter screen, discharge plate, first baffle and second baffle in this utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Base; 2. Screening cylinder; 2-1. Outlet; 3. Feed hopper; 4. Filter screen; 5. Discharge plate; 6. No. 1 baffle; 7. No. 2 baffle; 8. Turning discharge frame; 9. No. 3 baffle; 10. Collection mechanism; 10-1. Collection hopper; 10-2. Air outlet pipe; 10-3. Dustproof net; 10-4. Connecting hopper; 10-5. Collection tank; 11. Vibration mechanism; 11. Connecting ring; 11-1. Vibration motor; 11-2. Support rod; 11-3. Support pipe; 11-4. Spring; 11-5. No. 1 fan; 12. No. 2 fan; 13. Detailed Implementation

[0016] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. The preferred embodiments described are only examples. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] The specific implementation method adopts the following technical solution: Please see Figure 1-5 This embodiment includes a base 1, a screening cylinder 2, and a feeding hopper 3; the base 1 is provided with a screening cylinder 2, and the feeding hopper 3 is connected through the screening cylinder 2; It also includes: There are two filter screens 4, one above the other inside the screening cylinder 2. The filter screens 4 are arranged in a spiral downward manner. The lower end of the filter screen 4 is connected to the discharge plate 5. There are two discharge ports 2-1 on the annular wall of the screening cylinder 2. The discharge plate 5 is inserted and fixed inside the discharge port 2-1. The mesh diameter of the upper filter screen 4 is larger than that of the lower filter screen 4. The first baffle 6 is fixed on the inner top plate of the screening cylinder 2, and the first baffle 6 is fixed to the upper ends of the two filter screens 4. The second baffle 7 is fixed between the upper and lower filter screens 4, and the upper end of the second baffle 7 is fixed to the inner top plate of the screening cylinder 2. The rotating discharge rack 8 is fixed on the annular wall of the screening cylinder 2, and the opening of the rotating discharge rack 8 is set forward. There are two No. 3 baffles 9, which are fixed in front of and behind the discharge plate 5 below, respectively. Collection mechanism 10, wherein the collection mechanism 10 is disposed at the bottom of the screening cylinder 2; the collection mechanism 10 comprises: Collection hopper 10-1, wherein the collection hopper 10-1 is connected through to the bottom of the screening cylinder 2; Air outlet pipe 10-2, the air outlet pipe 10-2 is connected through to the bottom of the collection hopper 10-1, and the outlet of the air outlet pipe 10-2 is set to the left; Dustproof net 10-3, wherein the dustproof net 10-3 is fixed to the outlet of the air outlet duct 10-2; Connecting bucket 10-4, wherein the connecting bucket 10-4 is connected through to the bottom of the left end annular wall of the air outlet pipe 10-2; Collection tank 10-5 is screwed to the bottom of connecting bucket 10-4 by means of threads; Vibration mechanism 11, wherein the vibration mechanism 11 is disposed on the screening cylinder 2 and connected to the base 1; the vibration mechanism 11 comprises: Connecting ring 11-1, the connecting ring 11-1 is sleeved and fixed to the bottom of the ring wall of the screening cylinder 2; two left and right vibration motors 11-2 are fixed on the connecting ring 11-1, the vibration motors 11-2 are connected to an external power supply, and the specific model of the vibration motors 11-2 is purchased directly from the market and installed and used according to the actual use requirements. Support rod 11-3, there are several support rods 11-3, and they are fixed to the bottom of the connecting ring 11-1 in a ring-shaped distribution; Support tube 11-4, there are several support tubes 11-4, and they are movably sleeved on the bottom of support rod 11-3, and the support tube 11-4 is fixed on base 1; Spring 11-5, there are several springs 11-5, and they are respectively sleeved on the support rod 11-3. The two ends of the spring 11-5 are fixed to the connecting ring 11-1 and the support tube 11-4. The No. 1 fan 12 is fixed to the base 1 by a bracket and is located above the feed hopper 3. The No. 1 fan 12 is connected to an external power source. The specific model of the No. 1 fan 12 is purchased and installed directly from the market according to actual usage requirements. Several No. 2 fans 13 are arranged in a ring on the frame wall of the No. 1 fan 12. The No. 2 fans 13 are arranged from high to low and from the inside to the outside. The No. 2 fans 13 are connected to an external power source. The specific model of the No. 2 fans 13 is purchased and installed directly from the market according to actual usage requirements.

[0018] When using this utility model, material is fed through the feeding hopper 3. The No. 1 fan 12 and the No. 2 fan 13 are started to blow the dust generated during feeding into the screening cylinder 2 from the top and side of the feeding hopper 3. The vibration motor 11-2 is started, and the screening cylinder 2 vibrates under the action of the spring 11-5. The sand and gravel material in the screening cylinder 2 rotates and falls on the upper filter screen 4, so that the larger sand and gravel are discharged and collected through the upper discharge plate 5 and the deflecting discharge frame 8. The medium-sized sand and gravel are discharged and collected through the lower filter screen 4 and the lower discharge plate 5. The deflecting discharge frame 8 plays the role of switching the discharge direction, so that the larger sand and gravel and the medium-sized sand and gravel are collected separately. The fine sand and gravel and dust are intercepted by the dustproof net 10-3 through the collection hopper 10-1 and the air outlet pipe 10-2, and fall into the collection tank 10-5 after vibration, so as to avoid dust flying and facilitate timely dust collection.

[0019] Compared with the prior art, the beneficial effects of this utility model are: 1. A spiral descending filter screen 4 is provided to extend the screening path of sand and gravel. The sand and gravel raw materials in the screening cylinder 2 rotate and descend on the filter screen 4 above, thereby improving the screening efficiency. 2. The vibrating motor 11-2 and the spring 11-5 are used to drive the screening cylinder 2 to vibrate, so that the sand and gravel can be fully tumbled and screened on the filter screen 4, thereby improving the sorting accuracy and efficiency. 3. Set up a turning discharge rack 8 to switch the discharge direction, realize the automatic separation and collection of large-diameter sand and gravel and medium-diameter sand and gravel, and reduce manual intervention; 4. Fine sand and dust are intercepted by the dustproof net 10-3 and fall into the collection tank 10-5 after vibration, preventing dust from flying and facilitating centralized treatment; 5. Dust is blown from above and to the side of the feed hopper 3 by blowers No. 12 and No. 23, which effectively suppresses the spread of dust during feeding and improves the cleanliness of the working environment.

[0020] For those skilled in the art, modifications can be made to the technical solutions described in the foregoing embodiments, and equivalent substitutions can be made to some of the technical features. 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 sand and gravel screening device for mortar production, comprising a base (1), a screening cylinder (2) and a feed hopper (3); the base (1) is provided with the screening cylinder (2), and the feed hopper (3) is connected through the screening cylinder (2); Its features are, It also includes: The filter screen (4) consists of two screens, which are respectively installed in the screening cylinder (2) at the top and bottom. The filter screen (4) is arranged in a spiral downward manner. The lower end of the filter screen (4) is connected to a discharge plate (5). There are two discharge ports (2-1) on the ring wall of the screening cylinder (2). The discharge plate (5) is inserted and fixed in the discharge port (2-1). The mesh diameter of the upper filter screen (4) is larger than that of the lower filter screen (4). The first baffle (6) is fixed on the inner top plate of the screening cylinder (2), and the first baffle (6) is fixed to the upper ends of the two filter screens (4); The second baffle (7) is fixed between the upper and lower filter screens (4), and the upper end of the second baffle (7) is fixed on the inner top plate of the screening cylinder (2). The rotating discharge rack (8) is fixed on the annular wall of the screening cylinder (2), and the opening of the rotating discharge rack (8) is set forward; The number of the No. 3 baffle (9) is two, and they are fixed in front of and behind the discharge plate (5) below respectively. A collection mechanism (10) is located at the bottom of the screening cylinder (2); Vibration mechanism (11) is located on the screening cylinder (2) and is connected to the base (1).

2. The sand and gravel screening device for mortar production according to claim 1, characterized in that: The collection mechanism (10) comprises: The collecting hopper (10-1) is connected through to the bottom of the screening cylinder (2); The air outlet pipe (10-2) is connected to the bottom of the collection hopper (10-1) through the air outlet pipe (10-2), and the outlet of the air outlet pipe (10-2) is set to the left. A dustproof net (10-3) is fixed to the outlet of the air outlet pipe (10-2); The connecting hopper (10-4) is connected through the bottom of the left end annular wall of the air outlet pipe (10-2); The collection tank (10-5) is screwed to the bottom of the connecting bucket (10-4).

3. The sand and gravel screening device for mortar production according to claim 1, characterized in that: The vibration mechanism (11) comprises: Connecting ring (11-1), the connecting ring (11-1) is sleeved and fixed to the bottom of the ring wall of the screening cylinder (2); Support rods (11-3), there are several support rods (11-3), and they are fixed to the bottom of the connecting ring (11-1) in a ring-shaped distribution; Support tube (11-4), there are several support tubes (11-4), and they are movably sleeved on the bottom of the support rod (11-3), and the support tubes (11-4) are fixed on the base (1); The springs (11-5) are numerous and are respectively sleeved on the support rod (11-3). The two ends of the springs (11-5) are fixed on the connecting ring (11-1) and the support tube (11-4).

4. The sand and gravel screening device for mortar production according to claim 3, characterized in that: Two vibration motors (11-2) are fixed on the connecting ring (11-1), and the vibration motors (11-2) are connected to an external power source.

5. A sand and gravel screening device for mortar production according to claim 1, characterized in that: The No. 1 blower (12) is fixed on the base (1) by a bracket and is located above the feed hopper (3); the No. 1 blower (12) is connected to an external power source.

6. The sand and gravel screening device for mortar production according to claim 5, characterized in that: Several No. 2 fans (13) are arranged in a ring on the frame wall of No. 1 fan (12). The No. 2 fans (13) are arranged from high to low and from the inside to the outside. The No. 2 fans (13) are connected to an external power source.

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