Screening equipment for concrete production

Abstract

The utility model is suitable for the field of concrete production, and provides a screening device for concrete production, which is used for screening concrete materials and comprises a machine shell, a feeding port, a discharging port, a feeding port, a discharging port, a discharging port, a screening device and a discharging port, and the side face of the machine shell is fixedly provided with the feeding port and the discharging port; the screening assembly is located in the machine shell and used for screening materials, and the screening assembly comprises a first screening barrel and a second screening barrel; the driving assembly is used for driving the screening assembly to rotate. The sun gear, the planet gear and the gear ring are arranged to form planetary gear set transmission, so that the rotating direction of the second screening barrel is opposite to that of the first screening barrel, and the first spiral blade and the second spiral blade which are arranged in the first screening barrel and the second screening barrel respectively are matched to drive materials in the screening barrel to horizontally move in the rotating process. And on the basis of the rotating directions of the first screening barrel and the second screening barrel, the material moving direction is controlled, and screening and output of the materials are facilitated.

Description

A screening device for concrete production Technical Field

[0001] This utility model belongs to the field of concrete production, and in particular relates to a screening device for concrete production. Background Technology

[0002] Concrete is a composite material formed by mixing cement as a binder with sand, aggregate, water, and admixtures in a specific ratio, and then hardening it. It features readily available and inexpensive raw materials, high strength, and durability, and is widely used in construction, bridge, and road engineering. Before pouring, it is in a plastic state, allowing it to flexibly adapt to complex structures. After hardening, it bonds with steel reinforcement to form a rigid whole (such as reinforced concrete), capable of simultaneously withstanding compressive and tensile stresses.

[0003] Concrete aggregates are usually made from mined limestone, granite, etc., through crushing and processing. However, the size of the crushed stone aggregates is usually difficult to control precisely, and it is easy to produce aggregates that are too large or too small. After these aggregates are processed into concrete, they may affect the quality of the concrete, causing fluctuations in the strength of the concrete, and thus affecting the building performance. Summary of the Invention

[0004] The purpose of this utility model embodiment is to provide a screening device for concrete production, which aims to solve the problems mentioned in the background art.

[0005] This utility model embodiment is implemented as follows: a screening device for concrete production, used for screening concrete materials, includes:

[0006] The machine casing has a feed inlet for inputting materials and a discharge outlet for outputting materials fixedly opened on its side;

[0007] A screening assembly, located inside the casing, is used for screening materials. The screening assembly includes a screening cylinder one and a screening cylinder two. Screen holes are provided on the outer sides of both screening cylinder one and screening cylinder two. The size of the screen holes on screening cylinder one is larger than that on screening cylinder two. Screen cylinder one is located inside screening cylinder two and is coaxial with screening cylinder two. Spiral blade one and spiral blade two with the same spiral direction are fixedly installed inside screening cylinder one and screening cylinder two, respectively.

[0008] A drive assembly for driving the screening assembly to rotate, the drive assembly comprising:

[0009] The motor is fixedly mounted on the outside of the housing and is used to output power;

[0010] The rotating shaft has one end fixedly installed on one side of the screening cylinder, and the other end movably passes through the screening cylinder and the machine casing, extending to the outside of the machine casing and being fixedly connected to the power output end of the motor through the transmission unit.

[0011] The sun gear is fixedly mounted on the rotating shaft and located inside the feed inlet. It is driven by a planetary gear set formed by the rotation of multiple planetary gears mounted on the side wall of the machine casing and their meshing with the gear rings set on both sides of the screening cylinder.

[0012] As a further embodiment of this utility model: the bottom of the machine casing is provided with an opening, and two guide plates are symmetrically arranged inside the machine casing below the screening cylinder.

[0013] As a further embodiment of this utility model: an opening is provided on the side wall of the feed inlet at the position corresponding to the bottom end of the screening cylinder, and a baffle is hinged inside the opening. Multiple buckles for fixing are fixedly provided at the bottom end of the baffle.

[0014] As a further embodiment of this utility model: a rolling ring is fixedly installed inside the casing at positions corresponding to the two ends of the screening cylinder. The rolling ring is used to support and limit the movement of one end of the screening cylinder. The rolling ring includes:

[0015] A ball bearing seat, in which multiple balls are movably installed, and a ball bearing groove is fixedly opened on one side of the screening cylinder corresponding to the balls.

[0016] The retainer, a movable retainer, is installed inside the ball bearing housing to limit the movement of the balls.

[0017] As a further embodiment of this utility model: two support rollers are symmetrically arranged inside the casing at a position below the second screening cylinder. The support rollers are rotatably installed inside the casing via a central shaft, and the side of the support rollers makes rolling contact with the side of the second screening cylinder.

[0018] As a further aspect of this utility model: the transmission unit includes:

[0019] The drive wheel is fixedly installed at the power output end of the motor;

[0020] The driven wheel is fixedly installed at the end of the shaft and is connected to the driving wheel via a belt.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. The concrete production screening equipment provided in this utility model embodiment uses a planetary gear set consisting of a sun gear, planetary gears, and a gear ring to drive the screening cylinder two in the opposite direction to the screening cylinder one. The spiral blades one and two, respectively installed inside the screening cylinder one and screening cylinder two, drive the internal material to move horizontally during rotation. Based on the rotation directions of the screening cylinder one and screening cylinder two, the direction of material movement is controlled, facilitating material screening and output.

[0023] 2. The present invention provides a screening equipment for concrete production. The equipment is equipped with a guide plate to discharge materials that are too small in size from the screening cylinder. The baffle is opened and the motor is controlled to rotate in the opposite direction to drive the screening cylinder to rotate in the opposite direction. The spiral blades are used to move materials that are too large in size horizontally and discharge them through the baffle, thereby realizing the output of materials that are too large or too small in size.

[0024] 3. The concrete screening equipment provided in this embodiment of the present invention uses a rolling ring and ball groove to support and limit the end of the screening cylinder, and reduces the rotational friction resistance of the screening cylinder by means of the ball, thereby reducing the load on the motor. The support rollers provide support for the screening cylinder, and rotating the support rollers does not affect the normal rotation and screening effect of the screening cylinder. Attached Figure Description

[0025] Figure 1 is a three-dimensional structural diagram of a screening equipment for concrete production provided in an embodiment of this utility model;

[0026] Figure 2 is a partial cross-sectional schematic diagram of a screening device for concrete production provided in an embodiment of the present invention;

[0027] Figure 3 is an enlarged view of point A in Figure 2;

[0028] Figure 4 is a partial structural schematic diagram of a screening equipment for concrete production provided in an embodiment of this utility model;

[0029] Figure 5 is a schematic diagram of the sun wheel structure of a screening device for concrete production provided in an embodiment of this utility model.

[0030] In the attached diagram: 1. Casing; 11. Feed inlet; 12. Discharge outlet; 13. Guide plate; 14. Rolling ring; 141. Ball bearing seat; 142. Ball bearing; 143. Cage; 15. Support roller; 16. Baffle; 161. Buckle; 2. Screening assembly; 21. Screening cylinder one; 211. Spiral blade one; 212. Ball bearing groove; 22. Screening cylinder two; 221. Spiral blade two; 222. Gear ring; 3. Drive assembly; 31. Motor; 32. Rotary shaft; 33. Transmission unit; 331. Drive wheel; 332. Driven wheel; 333. Belt; 34. Sun gear; 35. Planetary gear. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0032] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0033] Please refer to Figures 1 to 5. This embodiment of the invention provides a screening device for concrete production, used for screening concrete materials, including:

[0034] The machine casing 1 has a feed inlet 11 for inputting materials and a discharge outlet 12 for outputting materials fixedly opened on its side;

[0035] Screening assembly 2, located inside housing 1, is used for screening materials. Screening assembly 2 includes screening cylinder 1 21 and screening cylinder 22. Screen holes are provided on the outer side of screening cylinder 1 21 and screening cylinder 22. The size of the screen holes on screening cylinder 1 21 is larger than the size of the screen holes on screening cylinder 22. Screen cylinder 1 21 is located inside screening cylinder 22 and is coaxial with screening cylinder 22. Spiral blades 1 211 and 221 with the same spiral direction are fixedly installed inside screening cylinder 1 21 and screening cylinder 22, respectively.

[0036] Drive component 3, used to drive the screening component 2 to rotate, the drive component 3 includes:

[0037] Motor 31 is fixedly mounted on the outside of housing 1 and is used to output power;

[0038] The rotating shaft 32 has one end fixedly installed on the side of the screening cylinder 21, and the other end movably passes through the screening cylinder 22 and the machine housing 1, extending to the outside of the machine housing 1 and being fixedly connected to the power output end of the motor 31 through the transmission unit 33.

[0039] The sun gear 34 is fixedly installed on the rotating shaft 32 and located inside the feed inlet 11. It is driven by a planetary gear set through the rotation of multiple planetary gears 35 installed on the side wall of the casing 1 and meshing with the gear ring 222 set on the side of the screening cylinder 22.

[0040] In practical application, concrete material to be screened is fed into screening cylinder 21 through inlet 11. Motor 31 is started, and screening cylinder 21 and screening cylinder 22 are rotated through rotating shaft 32. The concrete material is initially screened through the screen holes on the outside of screening cylinder 21. Material that is too large is retained in screening cylinder 21. The material after initial screening falls into screening cylinder 22 for secondary screening. Material that is too small is discharged through the screen holes on the outside of screening cylinder 22. Material of suitable size is retained in screening cylinder 22 and discharged through outlet 12 with the rotation of screening cylinder 22 and the action of spiral blade 221.

[0041] In this embodiment, a planetary gear set is formed by a sun gear 34, a planetary gear 35, and a gear ring 222, which makes the second screening cylinder 22 rotate in the opposite direction to the first screening cylinder 21. In conjunction with the spiral blades 211 and 221 respectively installed in the first screening cylinder 21 and the second screening cylinder 22, the material inside is driven to move horizontally when rotating. Based on the rotation direction of the first screening cylinder 21 and the second screening cylinder 22, the direction of material movement is controlled, which facilitates the screening and output of the material.

[0042] Please refer to Figures 2, 3 and 4. As a preferred embodiment of this utility model, the bottom of the housing 1 is provided with an opening, and two guide plates 13 are symmetrically arranged inside the housing 1 below the screening cylinder 22.

[0043] Furthermore, an opening is provided on the side wall of the feed inlet 11 at the position corresponding to the bottom end of the screening cylinder 22, and a baffle 16 is hinged inside it. Multiple buckles 161 for fixing are fixedly provided at the bottom end of the baffle 16.

[0044] In practical application, the guide plate 13 is used to discharge materials that are too small in size from the screening cylinder 22. The baffle 16 is opened and the motor 31 is controlled to rotate in the opposite direction, which drives the screening cylinder 21 to rotate in the opposite direction. The spiral blades 211 are used to move materials that are too large in size horizontally and discharge them through the baffle 16, thus realizing the output of materials that are too large or too small in size.

[0045] Please refer to Figures 3 and 4. In another preferred embodiment of this invention, a rolling ring 14 is fixedly installed inside the housing 1 at a position corresponding to the end of the screening cylinder 22. The rolling ring 14 is used to support and limit the end of the screening cylinder 21. The rolling ring 14 includes:

[0046] A ball bearing seat 141 has multiple balls 142 movably installed inside it, and a ball bearing groove 212 is fixedly opened on the side of the screening cylinder 21 corresponding to the balls 142.

[0047] The retainer 143 is installed in the ball seat 141 to limit the movement of the ball 142.

[0048] Furthermore, two support rollers 15 are symmetrically arranged inside the housing 1 at a position below the screening cylinder 22. The support rollers 15 are rotatably installed inside the housing 1 via a central shaft, and the side of the support rollers 15 is in rolling contact with the side of the screening cylinder 22.

[0049] In practical application, this embodiment uses the rolling ring 14 and ball groove 212 to support and limit the end of the screening cylinder 21. Based on the ball 142, the rotational friction resistance of the screening cylinder 21 is reduced, thus reducing the load on the motor 31. The support roller 15 supports the screening cylinder 22, and rotating the support roller 15 does not affect the normal rotation and screening effect of the screening cylinder 22.

[0050] Please refer to Figure 2. As another preferred embodiment of this utility model, the transmission unit 33 includes:

[0051] The drive wheel 331 is fixedly installed at the power output end of the motor 31;

[0052] Driven wheel 332 is fixedly installed at the end of rotating shaft 32 and is connected to driving wheel 331 via belt 333.

[0053] In practical applications, this embodiment uses a belt drive consisting of a drive wheel 331, a driven wheel 332, and a belt 333. This belt drive provides a buffering and vibration-absorbing effect, ensures smooth operation, has a simple structure, low installation and maintenance costs, and is highly adaptable to the high-dust environment of concrete screening.

[0054] In one embodiment, the transmission form of the transmission unit 33 can be various, such as gear transmission, chain transmission, etc., as long as it can drive the rotating shaft 32 to rotate. This embodiment does not impose any additional limitations here.

[0055] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0056] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0057] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A screening device for concrete production, used for screening concrete materials, characterized in that: include: The machine casing (1) has a feed inlet (11) for inputting materials and a discharge outlet (12) for outputting materials fixedly opened on its side; the screening assembly (2) is located inside the machine casing (1) and is used for screening materials. The screening assembly (2) includes a screening cylinder one (21) and a screening cylinder two (22). Screen holes are provided on the outer side of both the screening cylinder one (21) and the screening cylinder two (22). The size of the screen hole on the screening cylinder one (21) is larger than the size of the screen hole on the screening cylinder two (22). The screening cylinder one (21) is located inside the screening cylinder two (22) and is coaxial with the screening cylinder two (22). Spiral blade one (211) and spiral blade two (221) with the same spiral direction are fixedly installed in the screening cylinder one (21) and the screening cylinder two (221), respectively. The drive assembly (3) is used to drive the screening assembly (2) to rotate. The drive assembly (3) includes: a motor (31), which is fixedly installed on the outside of the housing (1) and is used to output power; a rotating shaft (32), one end of which is fixedly installed on the side of the screening cylinder (21), and the other end of which extends through the screening cylinder (22) and the housing (1) to the outside of the housing (1) and is fixedly connected to the power output end of the motor (31) through the transmission unit (33); a sun gear (34), which is fixedly installed on the rotating shaft (32) and located in the feed inlet (11). It is driven by a planetary gear set through the meshing of multiple planetary gears (35) installed on the side wall of the housing (1) with the gear ring (222) set on the side of the screening cylinder (22).

2. The screening equipment for concrete production according to claim 1, characterized in that: The bottom of the casing (1) is provided with an opening, and two guide plates (13) are symmetrically arranged inside the casing (1) below the screening cylinder (22).

3. A screening device for concrete production according to claim 2, characterized in that: The feed inlet (11) has an opening at the position corresponding to the bottom of the screening cylinder (22) on its side wall, and a baffle (16) is hinged inside it. The bottom of the baffle (16) is fixedly provided with multiple buckles (161) for fixing.

4. A screening device for concrete production according to claim 1, characterized in that: A rolling ring (14) is fixedly installed inside the housing (1) at the position corresponding to the end of the screening cylinder (22). The rolling ring (14) is used to support and limit the end of the screening cylinder (21). The rolling ring (14) includes: a ball seat (141) in which multiple balls (142) are movably installed, and a ball groove (212) is fixedly opened on the side of the screening cylinder (21) corresponding to the balls (142); and a retainer (143) which is movably locked in the ball seat (141) and is used to limit the balls (142).

5. A screening device for concrete production according to claim 4, characterized in that: Two support rollers (15) are symmetrically arranged inside the housing (1) below the screening cylinder (22). The support rollers (15) are rotatably installed inside the housing (1) via a central shaft, and the side of the support rollers (15) rolls in contact with the side of the screening cylinder (22).

6. A screening device for concrete production according to claim 1, characterized in that: The transmission unit (33) includes: a drive wheel (331), which is fixedly installed at the power output end of the motor (31); and a driven wheel (332), which is fixedly installed at the end of the rotating shaft (32) and is connected to the drive wheel (331) via a belt (333).

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