Dry-mixed mortar aggregate screening device

Abstract

The dry-mixed mortar aggregate screening device comprises a box body and a box cover, a feeding hopper is arranged at the upper end of the box cover, a partition plate is arranged in the box body and divides an inner cavity of the box body into a screening chamber and a smashing chamber, and the screening chamber is communicated with the smashing chamber through a material passing opening. A discharging plate is arranged on one side of the screening chamber in a communicating mode, a screening plate is arranged in the screening chamber, a material guiding plate is arranged at the lower end of the screening plate, and a driving assembly is connected below the material guiding plate; a crushing assembly is arranged in the crushing chamber; and a dust falling assembly is arranged on the right side of the box body, a lifting assembly is arranged behind the box body and comprises a conveying pipe, the upper end of the conveying pipe communicates with a feeding pipe, and the center of the bottom of the crushing chamber communicates with a discharging pipe. According to the aggregate screening device, aggregate screening is achieved, coarse materials are smashed through the smashing assembly, the smashed coarse materials enter the box body again through the lifting assembly, and therefore the coarse materials can be screened again after being refined, and the utilization rate of the materials is improved.

Description

Technical Field

[0001] This utility model relates to the field of dry-mixed mortar production, and in particular to a dry-mixed mortar aggregate screening device. Background Technology

[0002] In recent years, with the advancement of construction technology and the increasing demands for environmentally friendly construction in my country, a new type of green building material, dry-mixed mortar, has gradually emerged. It has received widespread attention due to its multiple social benefits, including resource conservation and environmental protection. Commonly known as hydraulic cementitious mortar, it is a granular or powdered material made by physically mixing screened aggregates (such as quartz sand), inorganic cementitious materials (such as cement), and additives (such as polymers) in a specific ratio. This material can be directly mixed with water on-site and used; it is also called dry mortar powder, dry mix, or dry-mix powder. Some building adhesives also fall into this category, and dry-mixed mortar has a wide range of applications. The aggregates in dry-mixed mortar are mostly quartz sand, and the aggregates used to make dry-mixed mortar need to be screened before production.

[0003] The main purpose of screening aggregates in dry-mixed mortar is to screen out larger-sized aggregates. This prevents excessively large aggregate particles from failing to fill the voids, which would create numerous gaps and cracks during mixing with the mortar. This results in uneven mortar, insufficient strength, and increased shrinkage and cracks in the building. In the prior art, patent document CN209349055U discloses a vibrating screening device for dry-mixed mortar processing. This solution offers high screening efficiency and stable equipment vibration. However, when applied to dry-mixed mortar aggregate screening, it cannot handle the screened coarse material, thus reducing the utilization rate of raw materials. Summary of the Invention

[0004] To address the problems mentioned in the background art, this utility model proposes a dry-mixed mortar aggregate screening device. This device screens the aggregate, and the screened coarse material falls to the flow pipe. Through the setting of the crushing component, the coarse material is crushed. Then, through the lifting component, the crushed coarse material is re-entered into the box, which is conducive to the re-screening of the coarse material after refinement, thereby improving the utilization rate of the material.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] The application discloses a dry-mixed mortar aggregate screening device which comprises a box body and a box cover, the upper end of the box cover is provided with a feeding hopper, the lower end of the feeding hopper extends to the inside of the box body through the box cover, a partition plate is arranged in the inside of the box body, the inside of the box body is divided into two parts by the partition plate, that is, a screening chamber and a crushing chamber, and the screening chamber and the crushing chamber are connected through a material passing port; a discharging plate is arranged on one side of the screening chamber in a communication mode, a screening plate is arranged below the feeding hopper in the inside of the screening chamber, a guide plate is arranged at the lower end of the screening plate, and a driving assembly is connected below the guide plate; and a crushing assembly is arranged in the inside of the crushing chamber.

[0007] A dust falling assembly is arranged on the right side of the box body, a lifting assembly is arranged at the back of the box body, the lifting assembly comprises a conveying pipe, a feeding pipe is arranged at the upper end of the conveying pipe in a communication mode, one end of the feeding pipe away from the conveying pipe penetrates through the outer wall of the feeding hopper and extends into the feeding hopper, a discharging pipe is arranged at the bottom of the crushing chamber in a communication mode, and one end of the discharging pipe away from the box body is connected with the lower end of the conveying pipe.

[0008] Preferably, the screening plate and the guide plate are arranged in an inclined mode, the inclined directions of the screening plate and the guide plate are opposite, the material passing port is arranged on the side close to the low end of the screening plate, and an inclined material flowing pipe is arranged in a communication mode at the bottom of the material passing port.

[0009] Preferably, a rotating shaft is arranged in the inside of the conveying pipe in a rotating mode, a motor one is arranged at the upper end of the conveying pipe, the output shaft of the motor one penetrates through the side wall of the conveying pipe and is connected with the top end of the rotating shaft, and helical blades are arranged on the rotating shaft.

[0010] Preferably, the driving assembly comprises a motor two and a driving shaft, the driving shaft is arranged on the box body in a rotating mode, the motor two is mounted on the outer wall of the box body, the output shaft of the motor two penetrates through the side wall of the box body and is connected with the driving shaft, two cams are arranged on the driving shaft in an interval mode, a fixed plate is mounted on the inner side wall of the box body, a guide rod is arranged in the center of the fixed plate, the guide rod is fixedly connected with the guide plate at the top, a push plate is connected with the guide rod at the bottom, the cam is in contact with the push plate, springs are sleeved on the guide rod, the springs are arranged between the push plate and the fixed plate, and the guide rod and the springs are arranged in two groups.

[0011] Preferably, the crushing assembly comprises two core shafts which are symmetrically mounted in the inside of the crushing box, gears are arranged at positions close to the ends of the core shafts, the gears are engaged with each other, crushing rollers are mounted on the core shafts, the bottom end of the material flowing pipe corresponds to the middle of the two crushing rollers, a motor three is mounted at the front of the box body, and the output shaft of the motor three penetrates through the side wall of the box body and is connected with one of the core shafts.

[0012] Preferably, the dust falling assembly comprises a fan and a collecting box, an air inlet pipe is arranged in communication with the input end of the fan, the air inlet pipe extends through the box cover to the inside of the box cover and is provided with an air suction cover, the air suction cover is arranged on the box cover, an air outlet pipe is arranged in communication with the output end of the fan, the air outlet pipe is in communication with the collecting box, a filter screen is arranged in the collecting box, and an air outlet is formed in the bottom of the collecting box.

[0013] Preferably, the screening plate and the guide plate are in an integrated structure, and the upper surface of the partition plate is an inwardly inclined slope surface.

[0014] Preferably, the box body is provided with supporting legs at the lower end, and the bottom of the crushing chamber is in an arc structure.

[0015] The utility model discloses the beneficial effect that:

[0016] The utility model discloses when using, the aggregate of waiting screening is added to the inside of feeding hopper and makes it enter the screening chamber in the box body, drives the cam rotation through starting motor no. 2, and the push plate is lifted by the cam and then falls down through the spring elastic reset, makes the guide plate and screening plate repeatedly up and down heaving movement, realizes the screening of aggregate, and the fine material after screening slides to the position of the discharge plate, and the coarse material after screening falls to the material passing port, through the setting of flow material pipe, makes the coarse material enter the crushing chamber inside, through starting motor no. 3, makes one of the arbor rotate, further makes the gear rotate, makes the other arbor synchronous rotation through the meshing between two gears, thereby drives two crushing rollers to rotate to each other, realizes the crushing of coarse material, through the setting of the discharge pipe, makes the broken coarse material enter the conveying pipe inside, and starting motor no. 1 makes the rotating shaft drive spiral blade rotation, thereby makes the broken coarse material output from the feeding pipe to the inside of feeding hopper, thereby is favorable to the secondary screening of the refined coarse material, improves the utilization of material, and in the aggregate screening process, the fan extracts the dust splashed in the screening process into the collecting box through the air suction cover, and then is collected through the filter screen, reaches good dust falling effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the perspective view of the utility model.

[0018] Figure 2 It is the rear view of the utility model.

[0019] Figure 3 It is the front view of the utility model, and the box body is in the section view state in the drawing.

[0020] Figure 4 It is the schematic view of the driving assembly in the utility model.

[0021] Figure 5 It is the sectional view of A-A in the utility model Figure 3 .

[0022] Figure 6 is the schematic diagram of the partition plate in the utility model.

[0023] Figure 7 is the schematic diagram of the pulverizing chamber and the discharge pipe in the utility model.

[0024] Figure 8 is the schematic diagram of the inside of the collection box in the utility model. DETAILED DESCRIPTION

[0025] The utility model is further illustrated in connection with the drawings and the specific implementation:

[0026] As Figures 1-8 shown, a dry-mixed mortar aggregate screening device, including box 1 and box cover 2, the upper end of box cover 2 is provided with feed hopper 3, the lower end of feed hopper 3 extends to the inside of box 1 through box cover 2, the inside of box 1 is provided with partition plate 4, the inside cavity of box 1 is divided into two by partition plate 4, and is screening chamber 5 and pulverizing chamber 6 respectively, screening chamber 5 and pulverizing chamber 6 are connected by passing material port 7; one side of screening chamber 5 is provided with discharge plate 8 in communication, the inside of screening chamber 5 is provided with screening plate 9 below feed hopper 3, the lower end of screening plate 9 is provided with guide plate 10, and drive assembly is connected below guide plate 10; the inside of pulverizing chamber 6 is provided with pulverizing assembly; in addition, the right side of box 1 is provided with dust fall assembly, the rear of box 1 is provided with lifting assembly, the lifting assembly includes conveying pipe 11, the upper end of conveying pipe 11 is provided with feeding pipe 12 in communication, one end of feeding pipe 12 away from conveying pipe 11 penetrates the outer wall of feed hopper 3 and extends into feed hopper 3, discharge pipe 13 is communicated at the bottom center of pulverizing chamber 6, and one end of discharge pipe 13 away from box 1 is communicated with the lower end of conveying pipe 11. Through the above setting structure, the screening of aggregate is realized by the repeated up-and-down movement of guide plate 10 and screening plate 9, the fine material after screening falls to the position of discharge plate 8 through guide plate 10, and the coarse material after screening falls to the position of flow pipe 14, further, the crushing of coarse material is realized by the setting of pulverizing assembly, and the crushed coarse material reenters the inside of box 1 by lifting assembly, so as to be beneficial to the re-screening of the refined coarse material, and the utilization rate of material is improved.

[0027] Please refer to Figure 3 , screening plate 9 and guide plate 10 are all inclined to set, the inclination direction of screening plate 9 and guide plate 10 is opposite, passing material port 7 is close to the low end of screening plate 9 and is provided with inclined flow pipe 14 in communication at the bottom.

[0028] In the embodiment, the rotating shaft 15 is arranged inside the conveying pipe 11, the upper end of the conveying pipe 11 is provided with a motor 16, the output shaft of the motor 16 penetrates the side wall of the conveying pipe 11 and is connected with the top end of the rotating shaft 15, and the rotating shaft 15 is provided with a spiral blade 17. Specifically, the spiral blade 17 is spirally wound on the rotating shaft 15, and a rotating gap is formed between the outer edge of the spiral blade 17 and the inner wall of the conveying pipe 11, and the material entering the conveying pipe 11 is gradually lifted after being pushed by the spiral blade 17.

[0029] Please refer again to Figure 4 , the driving assembly includes a motor 18 and a driving shaft 19, the driving shaft 19 is arranged on the box 1, the motor 18 is installed on the outer wall of the box 1, the output shaft of the motor 18 penetrates the side wall of the box 1 and is connected to the driving shaft 19, and two cams 20 are arranged on the driving shaft 19; the inner side wall of the box 1 is provided with a fixed plate 21, a guide rod 22 is arranged in the center of the fixed plate 21, the top of the guide rod 22 is fixedly connected to the guide plate 10, the bottom of the guide rod 22 is connected with a push plate 23, and the cam 20 is in contact with the push plate 23; the guide rod 22 is sleeved with a spring 24, the spring 24 is located between the push plate 23 and the fixed plate 21, and the guide rod 22 and the spring 24 are provided in two groups. By starting the motor 18, the driving shaft 19 drives the cam 20 to rotate, the cam 20 rotates while contacting the push plate 23, the push plate 23 is lifted by the cam 20 and then elastically resets and falls by the spring 24, so that the guide plate 10 and the screening plate 9 repeatedly move up and down.

[0030] Please refer again to Figure 5 , the crushing assembly includes two mandrels 25 symmetrically installed inside the crushing box, the mandrels 25 are provided with gears 26 near one end position, the two gears 26 are engaged, the mandrels 25 are provided with crushing rollers 27, the bottom end of the flow pipe 14 corresponds to the middle of the two crushing rollers 27, the front of the box 1 is provided with a motor 28, and the output shaft of the motor 28 penetrates the side wall of the box 1 and is connected with one of the mandrels 25. By starting the motor 28, one of the mandrels 25 rotates, the gears 26 rotate, the other mandrel 25 synchronously rotates through the engagement between the two gears 26, so that the two crushing rollers 27 rotate towards each other, and the purpose of crushing the coarse material is achieved.

[0031] In this embodiment, the dust falling assembly includes a fan 29 and a collection box 30, the input end of the fan 29 is in communication with an air inlet pipe 31, the air inlet pipe 31 extends through the box cover 2 to the inside of the box cover 2 and is provided with an air extraction cover 32, the air extraction cover 32 is installed on the box cover 2, the output end of the fan 29 is in communication with an air outlet pipe 33, the air outlet pipe 33 is connected with the collection box 30, the inside of the collection box 30 is provided with a filter screen 34, and the bottom of the collection box 30 is provided with an air outlet 35.

[0032] In order to reduce the influence of dust escaping in the process of screening dry-mixed mortar aggregate on the working environment, the dust falling assembly is arranged in this embodiment, the dust splashed in the screening process is extracted into the collection box 30 by the fan 29 cooperating with the air extraction cover 32, and the filter screen 34 is used for collection and filtration, so that good dust falling effect is achieved and a good working environment is ensured.

[0033] It is worth mentioning that the screening plate 9 and the guide plate 10 are of an integrated structure, and the upper surface of the partition plate 4 is an inwardly inclined slope surface. In addition, the box body 1 is provided with a supporting leg 36 at the lower end, and the bottom of the crushing chamber 6 is of an arc structure, which is beneficial to the material entering the discharge pipe 13 from the crushing chamber 6.

[0034] The use method of the product is as follows:

[0035] In use, first, the aggregate to be screened is added to the inside of the feeding hopper 3 to enter the screening chamber 5 in the box body 1, then the motor two 18 is started to drive the shaft 19 to rotate the cam 20, the cam 20 rotates to contact the push plate 23, the push plate 23 is lifted by the cam 20 and then elastically resets and falls by the spring 24, so that the guide plate 10 and the screening plate 9 repeatedly move up and down, so as to realize the screening of the aggregate; the fine material after screening slides to the position of the discharge plate 8 through the guide plate 10, and the coarse material after screening falls to the material passing port 7, the setting of the flow pipe 14 enables the coarse material to enter the inside of the crushing chamber 6, the starting of the motor three 28 enables one of the shafts 25 to rotate, further enables the gear 26 to rotate, the meshing between the two gears 26 enables the other shaft 25 to rotate synchronously, so as to drive the two crushing rollers 27 to rotate, and realize the crushing of the coarse material; the setting of the discharge pipe 13 enables the crushed coarse material to enter the inside of the conveying pipe 11, the starting of the motor one 16 enables the rotating shaft 15 to drive the spiral blade 17 to rotate, so as to enable the crushed coarse material to be output from the feeding pipe 12 to the inside of the feeding hopper 3, thereby being beneficial to the re-screening of the refined coarse material and improving the utilization rate of the material.

[0036] In the above screening process of the aggregate, the fan 29 extracts the dust splashed in the screening process into the collection box 30 through the air extraction cover 32, and then collects it through the filter screen 34, so that good dust falling effect is achieved.

[0037] The above-described embodiments are only preferred embodiments of the present application, and are not intended to limit the scope of the present application, so that equivalent changes or modifications made in the structure, features and principles described in the patent range of the present application should be included in the patent range of the present application.

Claims

1. A dry-mixed mortar aggregate screening device, comprising a box body (1) and a box cover (2), the upper end of the box cover (2) is provided with a feeding hopper (3), the lower end of the feeding hopper (3) extends through the box cover (2) to the inside of the box body (1), characterized in that, The box (1) is internally provided with a partition (4), which divides the inner cavity of the box (1) into two parts, i.e. a screening chamber (5) and a crushing chamber (6), and the screening chamber (5) and the crushing chamber (6) are connected in communication through a material passing port (7); one side of the screening chamber (5) is provided with a discharge plate (8) in communication, and the inside of the screening chamber (5) is provided with a screening plate (9) below the feed hopper (3), and the lower end of the screening plate (9) is provided with a guide plate (10), and the guide plate (10) is connected with a driving assembly below; the crushing chamber (6) is internally provided with a crushing assembly; The right side of the box (1) is provided with a dust falling assembly, and the rear of the box (1) is provided with a lifting assembly, the lifting assembly comprises a conveying pipe (11), the upper end of the conveying pipe (11) is provided with a feeding pipe (12) in communication, one end of the feeding pipe (12) away from the conveying pipe (11) penetrates through the outer wall of the feed hopper (3) and extends into the feed hopper (3), and the bottom center of the crushing chamber (6) is provided with a discharge pipe (13) in communication, and one end of the discharge pipe (13) away from the box (1) is connected in communication with the lower end of the conveying pipe (11).

2. Dry mortar aggregate screening device according to claim 1, characterized in that The screening plate (9) and the guide plate (10) are both provided in an inclined manner, the inclined directions of the screening plate (9) and the guide plate (10) are opposite, the material passing port (7) is provided close to the low end of the screening plate (9), and the bottom of the material passing port (7) is provided with an inclined material flow pipe (14) in communication.

3. Dry mortar aggregate screening device according to claim 1, characterized in that The conveying pipe (11) is internally provided with a rotating shaft (15), the upper end of the conveying pipe (11) is provided with a motor one (16), the output shaft of the motor one (16) penetrates through the side wall of the conveying pipe (11) and is connected with the top end of the rotating shaft (15), and the rotating shaft (15) is provided with a spiral blade (17).

4. Dry mortar aggregate screening device according to claim 1, characterized in that The driving assembly comprises a motor two (18) and a driving shaft (19), the driving shaft (19) is rotatably arranged on the box (1), the motor two (18) is mounted on the outer wall of the box (1), the output shaft of the motor two (18) penetrates through the side wall of the box (1) and is connected to the driving shaft (19), and two cams (20) are arranged on the driving shaft (19) at intervals; the inner side wall of the box (1) is provided with a fixed plate (21), a guide rod (22) is arranged at the center of the fixed plate (21), the top of the guide rod (22) is fixedly connected to the guide plate (10), the bottom of the guide rod (22) is connected with a push plate (23), and the cam (20) is in contact with the push plate (23); the guide rod (22) is sleeved with a spring (24), the spring (24) is located between the push plate (23) and the fixed plate (21), and the guide rod (22) and the spring (24) are provided in two groups.

5. Dry mortar aggregate screening device according to claim 2, characterized in that The pulverizing assembly comprises two shafts (25) symmetrically arranged inside the crushing box, each of the shafts (25) is provided with a gear (26) near one end, the two gears (26) are engaged, each of the shafts (25) is provided with a pulverizing roller (27), the bottom end of the flow pipe (14) corresponds to the middle of the two pulverizing rollers (27), the front of the box body (1) is provided with a motor three (28), the output shaft of the motor three (28) penetrates through the side wall of the box body (1) and is connected with one of the shafts (25).

6. Dry mortar aggregate screening device according to claim 1, characterized in that The dust falling assembly comprises a fan (29) and a collecting box (30), the input end of the fan (29) is in communication with an air inlet pipe (31), the air inlet pipe (31) extends through the box cover (2) to the inside of the box cover (2) and is provided with an air suction cover (32), the air suction cover (32) is arranged on the box cover (2), the output end of the fan (29) is in communication with an air outlet pipe (33), the air outlet pipe (33) is in communication with the collecting box (30), the inside of the collecting box (30) is provided with a filter screen (34), and the bottom of the collecting box (30) is provided with an air outlet (35).

7. Dry mortar aggregate screening device according to claim 1, characterized in that The screening plate (9) and the guide plate (10) are in an integrated structure, and the upper surface of the partition plate (4) is an inwardly inclined slope surface.

8. Dry mortar aggregate screening device according to claim 1, characterized in that The box body (1) is provided with supporting legs (36) at the lower end, and the bottom of the pulverizing chamber (6) is in an arc structure.

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