Dry-mixed mortar production raw material drying screen with multi-stage screening structure

Abstract

The dry-mixed mortar production raw material drying screen with the multi-stage screening structure comprises a base, supports are arranged on the two sides of the base, a screening barrel is arranged between the top ends of the supports, a rotating frame is installed on the peripheral wall of the screening barrel, the screening barrel is connected with the supports through the rotating frame, a pouring opening is formed in one side of the outer wall of the screening barrel, and a discharging opening is formed in the other side of the outer wall of the screening barrel. An opening and closing door is arranged outside the pouring opening, a plurality of screening plates are arranged in the screening barrel, and a stirring assembly is further arranged in the screening barrel. According to the dry-mixed raw material screening device, dry-mixed raw materials are screened layer by layer through the multiple stages of screening plates, the whole screening barrel can be rotated after screening is completed, the pouring opening faces downwards, after the opening and closing door is opened, the raw materials with different diameters are poured into the corresponding cells of the receiving box, and collection is convenient; the longitudinal length of the pouring opening is larger than the maximum distance between the screening plates, the interior of the screening barrel can be cleaned and overhauled through the pouring opening during daily overhaul, the operation space is large, and operation of workers is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of dry-mix mortar screening, in particular to a dry-mix mortar production raw material drying screen with a multi-stage screening structure. Background Art

[0002] The Chinese patent published with announcement number: CN112090727B is specifically a dry-mixed mortar aggregate drying and screening device. By providing a breaking mechanism, the material can be broken up to make the drying more uniform and thorough. The relevant components in the screening chamber are thoroughly screened during screening, and multiple stages of screening can be performed successively. The structure is simple, and several rotating cross bars on different driven shafts are staggered, so that the coverage area of ​​the rotating cross bars is larger and more complete when rotating. Brush columns are provided to prevent material from accumulating on the fixed support cavity. The apertures of the screening through holes provided in two or three adjacent screening areas are the same. In this way, two or three screening areas form a screening group of the same level, so that materials of corresponding particle sizes can be completely separated and will not enter the next screening group.

[0003] However, the device of this patent is not easy to take out after collection, and the inside is not easy to clean. In addition, the device is relatively complex and the production cost is high. Utility Model Content

[0004] The utility model aims to provide a dry mortar production raw material drying screen with a multi-stage screening structure, which has the advantages of multi-stage screening, easy removal after screening, easy cleaning and maintenance of the screening barrel, and the overall device is relatively simple and has low production cost, thereby solving the problems in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A dry mortar production raw material drying screen with a multi-stage screening structure comprises a base, brackets are provided on both sides of the base, a screening barrel is provided between the top ends of the brackets, a rotating frame is installed on the outer peripheral wall of the screening barrel, the screening barrel is connected to the bracket through the rotating frame, a pouring port is provided on one side of the outer wall of the screening barrel, an opening and closing door is provided outside the pouring port, a plurality of screening plates are provided in the screening barrel, and a stirring assembly is also provided in the screening barrel.

[0007] Preferably, the rotating frame includes a first connecting rod and a second connecting rod, two first connecting rods are provided and are respectively fixed to the upper and lower ends of the screening barrel, and the ends of the two first connecting rods are each fixedly connected by a second connecting rod.

[0008] Preferably, a mounting plate is provided in the middle position of the first connecting rod, and a feed pipe is provided on the mounting plate located on the upper part of the screening barrel, the feed pipe is connected to the screening barrel, and the second connecting rod is rotatably connected to the bracket through the main rotating shaft, and the main rotating shaft on one side is connected to a rotating cylinder fixed on the bracket.

[0009] Preferably, the edge of the screening plate is fixedly connected to the inner wall of the screening barrel, and at least three screening plates are provided and arranged longitudinally. Screening holes are provided on the screening plate, and the diameter of the screening holes decreases from large to small from top to bottom.

[0010] Preferably, the stirring assembly includes a stirring motor, a stirring shaft and a stirring rod. The stirring motor is installed on a mounting plate at the bottom of the screening barrel. The stirring shaft is connected to the output end of the stirring motor. Bearings are provided at the center positions of the screening barrel and the screening plate. The stirring shaft passes through the bearings and is rotatably connected to the screening barrel and the screening plate.

[0011] Preferably, the stirring shaft is provided with a plurality of groups of stirring rods, and each group of stirring rods is provided above each sieve plate.

[0012] Preferably, the area of ​​the opening and closing door is larger than the area of ​​the pouring port, the opening and closing door fits against the outer peripheral wall of the screening barrel, a mounting strip is provided on the outer peripheral wall of the screening barrel, a sliding groove is provided on the mounting strip on the side facing the opening and closing door, the edge of the opening and closing door penetrates into the sliding groove and is slidably connected with the mounting strip.

[0013] Preferably, snap buckles are provided on the left and right sides of the opening and closing door, and the opening and closing door is snap-connected with the mounting strip via the snap buckles.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The utility model is provided with multi-stage screening plates to screen the dry mixed raw materials layer by layer. After the screening is completed, the entire screening barrel can be rotated so that the pouring port faces downward. After the opening and closing door is opened, raw materials of different diameters are poured into the corresponding grids of the receiving box, which is more convenient to collect.

[0016] 2. The longitudinal length of the pouring port provided in the utility model is greater than the maximum distance between the screening plates. During daily maintenance, the inside of the screening barrel can be cleaned and repaired through the pouring port. The operating space is large, which is convenient for the staff to operate.

[0017] 3. The utility model is provided with a screening plate and screening holes to screen the raw materials, a stirring rod is provided to accelerate the falling of the raw materials, and a rotating cylinder is provided to facilitate dumping after the screening barrel is rotated at an angle. The overall device is relatively simple, thereby reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the axonometric drawing of the overall structure of the utility model;

[0019] Figure 2 This is a state diagram of the opening and closing door of the utility model when it is opened;

[0020] Figure 3 This is a state diagram of the screening barrel of the utility model when it is dumped;

[0021] Figure 4 This is a cross-sectional view of the internal structure of the screening barrel of the utility model.

[0022] In the figure: 1. base; 11. bracket; 2. screening barrel; 21. pouring spout; 22. opening and closing door; 23. snap buckle; 3. rotating frame; 31. first connecting rod; 32. second connecting rod; 33. mounting plate; 34. main shaft; 35. rotating cylinder; 4. stirring assembly; 41. stirring motor; 42. stirring shaft; 43. stirring rod; 44. bearing; 5. feed pipe; 6. screening plate; 61. screening hole; 7. mounting strip; 8. receiving box; 81. partition. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In order to solve the problems in the prior art that it is inconvenient to take out after collection, the inside is not easy to clean, the device is relatively complex, and the production cost is high, the following technical solution is given, please refer to Figure 1-4 ;

[0025] A dry mortar production raw material drying screen with a multi-stage screening structure includes a base 1, brackets 11 are provided on both sides of the base 1, a screening barrel 2 is provided between the tops of the brackets 11, a rotating frame 3 is installed on the outer peripheral wall of the screening barrel 2, the screening barrel 2 is connected to the bracket 11 through the rotating frame 3, a pouring port 21 is opened on one side of the outer wall of the screening barrel 2, an opening and closing door 22 is provided outside the pouring port 21, a plurality of screening plates 6 are provided in the screening barrel 2, and a stirring component 4 is also provided in the screening barrel 2.

[0026] Specifically, a heating resistance wire is buried in the inner wall of the screening barrel 2. The dry mixed mortar inside the screening barrel 2 is heated by the heat generated by the resistance wire to evaporate the moisture contained in it. The water vapor can be output through the feed pipe 5 after the feed is stopped. The feed pipe 5 can be made of a hose material so that it can rotate with the screening barrel 2.

[0027] The rotating frame 3 includes a first connecting rod 31 and a second connecting rod 32 . Two first connecting rods 31 are provided and are respectively fixed to the upper and lower ends of the screening barrel 2 . The ends of the two first connecting rods 31 are each fixedly connected by a second connecting rod 32 .

[0028] A mounting plate 33 is provided in the center of the first connecting rod 31, and a feed pipe 5 is provided on the mounting plate 33 located on the upper part of the screening barrel 2. The feed pipe 5 is connected to the screening barrel 2, and the second connecting rod 32 is rotatably connected to the bracket 11 through a main rotating shaft 34, and the main rotating shaft 34 on one side is connected to a rotating cylinder 35 fixed on the bracket 11.

[0029] Specifically, after the rotating cylinder 35 is started, the second connecting rod 32 is driven to rotate through the main rotating shaft 34, and the second connecting rod 32 drives the screening barrel 2 to rotate 90° through the first connecting rod 31, so that the pouring port 21 of the screening barrel 2 faces directly downward, thereby pouring out the dry mixed mortar inside the screening barrel 2.

[0030] The edge of the screening plate 6 is fixedly connected to the inner wall of the screening barrel 2. No less than three screening plates 6 are provided and are arranged longitudinally. Screening holes 61 are provided on the screening plate 6. The diameter of the screening holes 61 decreases from top to bottom.

[0031] Specifically, before screening begins, the screening barrel 2 is in a vertical state, and the dry mixed mortar enters the screening barrel 2 through the feed pipe 5, first falls on the topmost screening plate 6, and rotates and moves under the action of the stirring component 4. The smaller particles of dry mixed raw materials pass through the screening holes 61 and fall onto the next layer of screening plate 6, and so on, until the dry mixed raw materials are screened.

[0032] The stirring assembly 4 includes a stirring motor 41, a stirring shaft 42 and a stirring rod 43. The stirring motor 41 is installed on the mounting plate 33 at the lower part of the screening barrel 2. The stirring shaft 42 is connected to the output end of the stirring motor 41. Bearings 44 are provided at the center positions of the screening barrel 2 and the screening plate 6. The stirring shaft 42 passes through the bearing 44 and is rotatably connected to the screening barrel 2 and the screening plate 6. Several groups of stirring rods 43 are provided on the stirring shaft 42, and a group of stirring rods 43 is provided above each screening plate 6.

[0033] Specifically, the stirring motor 41 drives the stirring shaft 42 to rotate, and the stirring shaft 42 drives the stirring rod 43 to rotate, stirring the dry mixed raw materials so that smaller particles can contact the screening holes 61 and fall onto the next screening plate 6.

[0034] The area of ​​the opening and closing door 22 is larger than the area of ​​the pouring port 21. The opening and closing door 22 fits against the outer peripheral wall of the screening barrel 2. A mounting strip 7 is provided on the outer peripheral wall of the screening barrel 2. A sliding groove is provided on the mounting strip 7 facing the side of the opening and closing door 22. The edge of the opening and closing door 22 penetrates into the sliding groove and is slidably connected with the mounting strip 7. A snap-fit ​​buckle 23 is provided on the left and right sides of the opening and closing door 22. The opening and closing door 22 is snap-fitted with the mounting strip 7 through the snap-fit ​​buckle 23. Sub-snap-fit ​​buckles matching the snap-fit ​​buckles 23 are installed on the mounting strips 7 on both sides of the opening and closing door 22.

[0035] Specifically, after the screening is completed, particles of different sizes stay on the corresponding screening plates 6. At this time, the rotating cylinder 35 is turned on to rotate the screening barrel 2 and make the opening and closing door 22 face the base 1, and the receiving box 8 is placed on the base 1. The receiving box 8 is provided with a partition 81 to divide the internal space of the receiving box 8 into several parts for holding dry mixed raw materials of different diameters, and each partition space corresponds to the space between the screening plates 6. After the receiving box 8 is docked with the screening barrel 2, the opening and closing door 22 is opened to allow the dry mixed raw materials of different diameters in the screening barrel 2 to fall into the corresponding compartments of the receiving box 8.

[0036] Working principle: the dry mixed raw materials enter the screening barrel 2 through the feed pipe 5, and the stirring motor 41 drives the stirring rod 43 to rotate through the stirring shaft 42 to stir the dry mixed raw materials. The smaller particles of raw materials pass through the screening holes 61 and continue to fall onto the next layer of screening plate 6 until the raw materials of this diameter cannot pass through the screening holes 61 of smaller diameter and stay on the screening plate 6; after the screening is completed, the rotating cylinder 35 is started, and the screening barrel 2 is driven to rotate 90° through the main shaft 34, the second connecting rod 32 and the first connecting rod 31, so that the pouring port 21 of the screening barrel 2 faces directly downward, and the receiving box 8 is placed on the base 1 so that the receiving box 8 is connected to the screening barrel 2, and then the opening and closing door 22 is opened to pour out the dry mixed mortar inside the screening barrel 2, so that the dry mixed raw materials of different diameters fall into the corresponding grids of the receiving box 8, and the collection work is completed.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dry mortar production raw material drying screen with a multi-stage screening structure, comprising a base (1), characterized in that: The base (1) is provided with brackets (11) on both sides, a screening barrel (2) is provided between the top ends of the brackets (11), a rotating frame (3) is installed on the outer peripheral wall of the screening barrel (2), the screening barrel (2) is connected to the bracket (11) through the rotating frame (3), a pouring port (21) is provided on one side of the outer wall of the screening barrel (2), an opening and closing door (22) is provided outside the pouring port (21), a plurality of screening plates (6) are provided in the screening barrel (2), and a stirring assembly (4) is also provided in the screening barrel (2).

2. A dry mortar production raw material drying screen with a multi-stage screening structure according to claim 1, characterized in that: The rotating frame (3) comprises a first connecting rod (31) and a second connecting rod (32). Two first connecting rods (31) are provided and are respectively fixed to the upper and lower ends of the screening barrel (2). The ends of the two first connecting rods (31) are each fixedly connected by a second connecting rod (32).

3. A dry mortar production raw material drying screen with a multi-stage screening structure according to claim 2, characterized in that: A mounting plate (33) is provided at the center of the first connecting rod (31), and a material delivery pipe (5) is provided on the mounting plate (33) located on the upper part of the screening barrel (2), and the material delivery pipe (5) is connected to the screening barrel (2). The second connecting rod (32) is rotatably connected to the bracket (11) through a main rotating shaft (34), and the main rotating shaft (34) on one side is connected to a rotating cylinder (35) fixed on the bracket (11).

4. A dry mortar production raw material drying screen with a multi-stage screening structure according to claim 3, characterized in that: The edge of the screening plate (6) is fixedly connected to the inner wall of the screening barrel (2). No less than three screening plates (6) are provided and arranged in a longitudinal direction. Screening holes (61) are provided on the screening plate (6). The diameter of the screening holes (61) decreases from large to small from top to bottom.

5. The dry mortar production raw material drying screen with a multi-stage screening structure according to claim 4, characterized in that: The stirring assembly (4) comprises a stirring motor (41), a stirring shaft (42) and a stirring rod (43); the stirring motor (41) is mounted on a mounting plate (33) at the bottom of the screening barrel (2); the stirring shaft (42) is connected to the output end of the stirring motor (41); bearings (44) are provided at the center positions of the screening barrel (2) and the screening plate (6); the stirring shaft (42) passes through the bearing (44) and is rotatably connected to the screening barrel (2) and the screening plate (6).

6. A dry mortar production raw material drying screen with a multi-stage screening structure according to claim 5, characterized in that: The stirring shaft (42) is provided with a plurality of groups of stirring rods (43), and a group of stirring rods (43) is provided above each screening plate (6).

7. The dry mortar production raw material drying screen with a multi-stage screening structure according to claim 6, characterized in that: The area of ​​the opening and closing door (22) is larger than the area of ​​the pouring port (21). The opening and closing door (22) fits the outer peripheral wall of the screening barrel (2). A mounting strip (7) is provided on the outer peripheral wall of the screening barrel (2). A sliding groove is provided on the mounting strip (7) toward one side of the opening and closing door (22). The edge of the opening and closing door (22) penetrates into the sliding groove and is slidably connected with the mounting strip (7).

8. The dry mortar production raw material drying screen with a multi-stage screening structure according to claim 7, characterized in that: The opening and closing door (22) is provided with snap-fit ​​buckles (23) on the left and right sides, and the opening and closing door (22) is snap-fitted with the mounting strip (7) via the snap-fit ​​buckles (23).

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