A production machine for dry-mix mortar

Abstract

The utility model relates to mortar production equipment technical field especially relates to a kind of production machinery of dry-mixed mortar, including upper shell and lower shell, the upper shell is communicated with lower shell, and the inside of lower shell is equipped with conveyor belt, for receiving and conveying raw materials falling from upper shell;Crushing assembly is arranged in the inside of upper shell for crushing treatment to raw materials.The utility model is by being provided with screening cylinder, and arc-shaped rod is arranged in its inside, so that non-standard aggregate can be automatically received by arc-shaped rod of screening cylinder inner wall and rotate with screening cylinder and fall back to crushing assembly, and is crushed again until meeting granularity requirement, both ensure aggregate granularity uniformity to protect dry-mixed mortar quality, avoid raw material waste, reduce production cost, also save the link of artificial sorting not completely broken aggregate, reduce labour intensity, simultaneously realize the continuous operation of crushing process, improve overall production efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of mortar production equipment, and in particular to a production machine for dry-mixed mortar. Background Technology

[0002] In the production of dry-mixed mortar, the crushing of aggregates (such as sand, gravel, cement clinker, etc.) is a key preliminary step to ensure the quality and performance of the finished mortar. It is necessary to ensure that the aggregates are crushed to have uniform particle size and meet the formula requirements in order to avoid problems such as poor mortar fluidity and insufficient strength in subsequent mixing processes.

[0003] Traditional crushing equipment often employs a simple "crushing + single screening" process (such as the multi-stage screening device for mortar production disclosed in the prior art with announcement number CN222587306U). However, after crushing the aggregate, particle size screening relies solely on vibrating screens or fixed screens. Such equipment lacks an effective recycling structure for substandard aggregates. Large, incompletely crushed aggregate particles cannot be automatically returned to the crushing components for reprocessing. If these are directly mixed with qualified aggregates, it will lead to uneven aggregate particle size, severely affecting the final quality of dry-mixed mortar. If quality must be guaranteed, it is necessary to arrange for dedicated personnel to manually sort out substandard aggregates and then manually transport them to the crushing equipment for refeeding, which not only increases the labor intensity of operators but also incurs additional labor costs. Utility Model Content

[0004] The purpose of this invention is to provide a dry-mixed mortar production machine that solves the problem.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A dry-mixed mortar production machine includes an upper shell and a lower shell, the upper shell and the lower shell being connected. A conveyor belt is installed inside the lower shell to receive and transport raw materials falling from the upper shell. A crushing assembly is installed inside the upper shell to crush the raw materials. A feeding assembly is installed inside the upper shell and rotates intermittently to feed the raw materials to the surface of the crushing assembly. A screening cylinder is installed inside the upper shell and sleeved around the crushing assembly and the feeding assembly. Arc-shaped rods are evenly arranged on its inner wall, running along the length of the screening cylinder. Screening grooves are provided between adjacent arc-shaped rods. The arc-shaped rods allow incompletely crushed raw materials to continue to be fed to the top of the screening cylinder and fall onto the surface of the crushing assembly. The screening grooves allow crushed raw materials smaller than the width of the screening groove to fall downwards onto the conveyor belt surface.

[0006] Preferably, the feeding assembly includes a feeding pipe and a connecting pipe. The feeding pipe is vertical and is fixedly installed at the end of the upper housing by a fixing plate. The connecting pipe is horizontal and rotatably connected to the inside of the upper housing. The feeding pipe and the connecting pipe are connected and rotatably connected. The circumferential surface of the connecting pipe has an opening along the length direction for unloading raw materials. The end of the upper housing is provided with a driving component for driving the connecting pipe to reciprocate.

[0007] Preferably, the driving component includes a driven pulley, a driving pulley, and a motor. The motor is fixedly installed at the end of the upper housing, and a driving pulley is fixedly installed at its output end. The driven pulley is fixedly sleeved on the circumferential surface of the connecting pipe, and the driving pulley and the driven pulley are connected by belt drive.

[0008] Preferably, the crushing assembly includes two crushing rollers, each with a rotating shaft fixedly passing through its center. Both crushing rollers are rotatably connected to the upper housing via the rotating shafts. Both rotating shafts rotatably pass through the upper housing. Drive gears are fixedly mounted on the surfaces of both rotating shafts, and the two drive gears mesh with each other. A second motor is fixedly mounted at the end of the upper housing, and the output shaft of the second motor is fixedly connected to the rotating shaft.

[0009] Preferably, the end of the upper housing is provided with a second driving component for driving the screening cylinder to rotate; the second driving component includes a driving gear, a driven gear ring and a third motor. The third motor is fixedly installed at the end of the upper housing, and its output shaft rotatably passes through the interior of the upper housing. The driving gear is fixedly installed at the end of the output shaft of the third motor, and the driven gear ring is fixedly sleeved on the circumferential surface of the screening cylinder and meshes with the driving gear.

[0010] Preferably, the connecting pipe is located above the two crushing rollers and parallel to them, so that the raw material falling from the connecting pipe can fall between the two crushing rollers. The rotation direction of the screening cylinder is consistent with the concave direction of the arc rod, so that the concave position of the arc rod can be used to receive the raw material that is not completely crushed when rotating. Then, it moves with the rotation of the screening cylinder. When the arc rod rotates to the top position with the screening cylinder, the raw material that is not completely crushed can fall again between the two crushing rollers for secondary crushing.

[0011] This utility model has at least the following beneficial effects: By setting up a screening cylinder with an arc-shaped rod inside, substandard aggregates are automatically collected by the arc-shaped rod on the inner wall of the screening cylinder and fall back to the crushing component as the screening cylinder rotates, where they are crushed again until they meet the particle size requirements. This ensures uniform aggregate particle size to guarantee the quality of dry-mixed mortar, avoids raw material waste, reduces production costs, eliminates the need for manual sorting of incompletely crushed aggregates, reduces labor intensity, and enables continuous operation of the crushing process, thereby improving overall production efficiency. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the upper shell of this utility model; Figure 3 This is a schematic diagram of the connecting pipe structure of this utility model; Figure 4 This is a schematic diagram of the screening cylinder structure of this utility model; Figure 5 This is a schematic diagram of the arc-shaped rod structure of this utility model.

[0014] In the diagram: 1. Upper shell; 2. Lower shell; 3. Conveyor belt; 4. Feeding assembly; 41. Feed pipe; 42. Connecting pipe; 43. Drive component one; 431. Driven pulley; 432. Driven pulley; 433. Motor one; 5. Crushing assembly; 51. Crushing roller; 52. Rotating shaft; 53. Drive gear; 54. Motor two; 6. Screening cylinder; 61. Arc rod; 62. Screening trough; 7. Drive component two; 71. Drive gear; 72. Motor three; 73. Driven gear ring. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] Reference Figure 1-5 A dry-mixed mortar production machine includes an upper shell 1 and a lower shell 2, the upper shell 1 and the lower shell 2 being connected. A conveyor belt 3 is provided inside the lower shell 2 for receiving and conveying raw materials falling from the upper shell 1; a crushing component 5, which is located inside the upper shell 1 for crushing the raw materials; a feeding component 4, which is located inside the upper shell 1 and rotates intermittently to feed the raw materials to the surface of the crushing component 5; and a screening cylinder 6, which is located inside the upper shell 1 and sleeved outside the crushing component 5 and the feeding component 4. Arc-shaped rods 61 are evenly arranged on the inner wall of the screening cylinder 6, and the arc-shaped rods 61 are arranged along the length direction of the screening cylinder 6. A screening groove 62 is provided between two adjacent arc-shaped rods 61. The arc-shaped rods 61 can be used to continue to feed the raw materials that are not completely crushed to the top of the screening cylinder 6 and then let them fall to the surface of the crushing component 5. The screening groove 62 is used to let the crushed raw materials with a size smaller than the width of the screening groove 62 fall downward to the surface of the conveyor belt 3.

[0018] Furthermore, it includes a feed pipe 41 and a connecting pipe 42. The feed pipe 41 is in a vertical state and is fixedly installed at the end of the upper housing 1 by a fixing plate. The connecting pipe 42 is in a horizontal state and is rotatably connected inside the upper housing 1. The feed pipe 41 and the connecting pipe 42 are connected and rotatably connected to each other. The circumferential surface of the connecting pipe 42 has an opening along the length direction for unloading raw materials. The end of the upper housing 1 is provided with a driving component 43 for driving the connecting pipe 42 to reciprocate.

[0019] The raw material is fed into the connecting pipe 42 through the feed pipe 41. At this time, the opening of the connecting pipe 42 faces upward, and the inner diameter of the inner wall of the connecting pipe 42 is larger at the end near the feed pipe 41 and gradually decreases towards the position away from the connecting pipe 42. This allows the raw material in the connecting pipe 42 to slide automatically into the connecting pipe 42. Then, the drive component 43 intermittently drives the connecting pipe 42 to rotate, rotating 180 degrees each time. This allows the raw material in the connecting pipe 42 to be poured onto the crushing component 5 through the opening for crushing, so that the raw material can fall evenly onto the surface of the crushing component 5.

[0020] Furthermore, the drive component 43 includes a driven pulley 431, a driving pulley 432, and a motor 433. The motor 433 is fixedly installed at the end of the upper housing 1, and the driving pulley 432 is fixedly installed at its output end. The driven pulley 431 is fixedly sleeved on the circumferential surface of the connecting pipe 42, and the driving pulley 432 and the driven pulley 431 are connected by belt drive.

[0021] It should be noted that the end of the connecting pipe 42 away from the feed pipe 41 rotates through the upper housing 1 and is set to a sealed state to prevent the raw material from falling from the end. When in use, the motor 433 is started, and the motor 433 drives the drive pulley 432 to rotate. The drive pulley 432 drives the driven pulley 431 to rotate by the belt. The driven pulley 431 drives the connecting pipe 42 to rotate. The motor 433 can achieve reciprocating drive, thereby making the connecting pipe 42 rotate back and forth, which facilitates unloading.

[0022] Furthermore, the crushing assembly 5 includes two crushing rollers 51, each with a rotating shaft 52 fixedly passing through its center. Both crushing rollers 51 are rotatably connected to the upper housing 1 via the rotating shaft 52. Both rotating shafts 52 rotatably pass through the upper housing 1. Both rotating shafts 52 have drive gears 53 fixedly mounted on their surfaces. The two drive gears 53 mesh with each other. A second motor 54 is fixedly mounted at the end of the upper housing 1. The output shaft of the second motor 54 is fixedly connected to the rotating shaft 52.

[0023] The motor 54 is started, which drives the rotating shaft 52 to rotate. The rotating shaft 52 drives the drive gear 53 on the surface to rotate. The two drive gears 53 mesh, so that they rotate synchronously in opposite directions. This causes the two rotating shafts 52 and the two crushing rollers 51 to rotate synchronously in opposite directions, thereby realizing the crushing of the raw materials.

[0024] Furthermore, the end of the upper housing 1 is provided with a driving component 2 7 for driving the screening cylinder 6 to rotate; the driving component 2 7 includes a driving gear 71, a driven gear ring 73 and a motor 3 72. The motor 3 72 is fixedly installed at the end of the upper housing 1, and its output shaft rotatably passes through the interior of the upper housing 1. The driving gear 71 is fixedly installed at the end of the output shaft of the motor 3 72. The driven gear ring 73 is fixedly sleeved on the circumferential surface of the screening cylinder 6 and meshes with the driving gear 71.

[0025] Start motor 72, which drives the drive gear 71 to rotate. The drive gear 71 drives the driven gear ring 73 to rotate, and the driven gear ring 73 drives the screening cylinder 6 to rotate.

[0026] Furthermore, the connecting pipe 42 is located above the two crushing rollers 51 and is parallel to them, so that the raw material falling from the connecting pipe 42 can fall between the two crushing rollers 51. The rotation direction of the screening cylinder 6 is consistent with the concave direction of the arc rod 61. Thus, when rotating, the concave position of the arc rod 61 can be used to receive the raw material that is not completely crushed. Then, it moves with the rotation of the screening cylinder 6. When the arc rod 61 rotates with the screening cylinder 6 to the top position, the raw material that is not completely crushed can fall again between the two crushing rollers 51 for secondary crushing.

[0027] In summary, the operator pours the raw material to be crushed into the feed pipe 41, and the raw material automatically falls into the connecting pipe 42 below (with the initial opening facing upwards to avoid accumulation). Start the drive device to rotate the connecting pipe 42 180 degrees (opening downwards) and pour the raw material evenly onto the crushing component 5; after pouring, the connecting pipe 42 rotates back to its original position and repeats the "loading-pouring" cycle. While the material is being fed, the two crushing rollers 51 rotate in opposite directions. The raw material falling from the connecting pipe 42 is squeezed and sheared by the rotating crushing rollers 51 and turned into small particles. Start the screening cylinder 6 and let it rotate in the direction of the concave surface of the arc-shaped rod 61 inside the cylinder; The crushed raw material falls into the screening cylinder 6. Small particles fall through the screening groove 62 on the cylinder and onto the conveyor belt 3 below. Large particles cannot fall and are caught by the arc rod 61. When the arc rod 61 rotates to the top with the screening cylinder 6, the large particles fall automatically and re-enter the crushing roller 51 for further crushing until the particles become smaller enough to fall through. The qualified small particles that fall onto conveyor belt 3 are transported to the mixing process by the start of conveyor belt 3.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A dry-mixed mortar production machine, characterized in that, include: The upper shell and the lower shell are connected. The lower shell is equipped with a conveyor belt for receiving and transporting raw materials falling from the upper shell. The crushing assembly, located inside the upper housing, is used to crush the raw materials. The feeding assembly is located inside the upper housing and rotates intermittently to feed the raw material to the surface of the crushing assembly. The screening cylinder is located inside the upper shell and is fitted around the crushing and feeding components. Its inner wall is uniformly provided with arc-shaped rods, which are arranged along the length of the screening cylinder. A screening trough is provided between two adjacent arc-shaped rods. The arc-shaped rods can be used to continue to feed the raw materials that are not completely crushed to the top of the screening cylinder and then let them fall to the surface of the crushing components. The screening trough is used to let the crushed raw materials with a size smaller than the width of the screening trough fall down to the surface of the conveyor belt.

2. The dry-mixed mortar production machinery according to claim 1, characterized in that, The feeding assembly includes a feeding pipe and a connecting pipe. The feeding pipe is vertical and is fixedly installed at the end of the upper housing by a fixing plate. The connecting pipe is horizontal and rotatably connected to the inside of the upper housing. The feeding pipe and the connecting pipe are connected and rotatably connected. An opening is provided on the circumferential surface of the connecting pipe along the length direction for unloading raw materials. The end of the upper housing is provided with a driving component for driving the connecting pipe to reciprocate.

3. The dry-mixed mortar production machinery according to claim 2, characterized in that, The driving component includes a driven pulley, a driving pulley, and a motor. The motor is fixedly installed at the end of the upper housing, and a driving pulley is fixed at its output end. The driven pulley is fixedly sleeved on the circumferential surface of the connecting pipe, and the driving pulley and the driven pulley are connected by belt drive.

4. The dry-mixed mortar production machinery according to claim 1, characterized in that, The crushing assembly includes two crushing rollers, each with a rotating shaft fixedly passing through its center. Both crushing rollers are rotatably connected to the upper housing via the rotating shafts. Both rotating shafts rotatably pass through the upper housing. Drive gears are fixedly mounted on the surfaces of both rotating shafts and mesh with each other. A second motor is fixedly mounted at the end of the upper housing, and the output shaft of the second motor is fixedly connected to the rotating shaft.

5. The dry-mixed mortar production machinery according to claim 1, characterized in that, The upper housing is provided with a second driving component for driving the screening cylinder to rotate at its end. The second driving component includes a driving gear, a driven gear ring, and a third motor. The third motor is fixedly installed at the end of the upper housing, and its output shaft rotates through the interior of the upper housing. The driving gear is fixedly installed at the end of the output shaft of the third motor. The driven gear ring is fixedly sleeved on the circumferential surface of the screening cylinder and meshes with the driving gear.

6. The dry-mixed mortar production machinery according to claim 2, characterized in that, The connecting pipe is located above the two crushing rollers and is parallel to them, so that the raw material falling from the connecting pipe can fall between the two crushing rollers. The rotation direction of the screening cylinder is consistent with the concave direction of the arc rod. Thus, when rotating, the concave position of the arc rod can be used to receive the raw material that is not completely crushed. Then, it moves with the rotation of the screening cylinder. When the arc rod rotates to the top position with the screening cylinder, the raw material that is not completely crushed can fall again between the two crushing rollers for secondary crushing.

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