A screening device for dry-mixed mortar production

Abstract

The utility model discloses a kind of screening devices for dry-mixed mortar production, including support frame, spiral feeding screening mechanism and discharge tank, spiral feeding screening mechanism includes feeding cylinder, feeding hopper, driving motor, spiral feeding rod, several steel rods, reinforcing steel ring, discharge tank rear assembly ring, several steel rod welding ring, discharge tank front assembly ring and screening cylinder;The device is through the integrated conveying screening design, the stable and reliable screen cylinder fixing mode, the convenient modular maintenance structure and the reasonable overall support, realizes efficient, stable, easy maintenance, environmental protection's continuous screening operation.

Description

Technical Field

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

[0002] Dry mortar is a commonly used building material and is widely used. Before use, dry mortar needs to be screened to remove large particles or lumps. This work is mainly done by screening devices, and existing screening devices mainly rely on screens.

[0003] Traditional screening equipment often requires conveying materials to a separate screening machine via conveyor belts or elevators. This discontinuous process involves multiple feeding and transfer steps, resulting in large equipment footprints, high energy consumption, low efficiency, and dust generation. Furthermore, traditional screen cylinders or screens are often not securely fixed and are prone to displacement, deflection, or deformation under vibration or material impact, altering the screening gap, affecting screening quality, and even colliding with other components and causing damage. Therefore, during long-term operation, heavy feed weights can easily lead to deformation of the support structure or loosening of connection points, affecting equipment lifespan and operational stability, and hindering the extension of service life. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a screening device for dry mortar production.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A screening device for dry mortar production includes a support frame, a spiral feeding screening mechanism fixedly mounted on the support frame, and a discharge box fixedly mounted at the end of the spiral feeding screening mechanism for collecting and discharging screened material. The spiral feeding screening mechanism includes a feeding cylinder fixedly mounted to the support frame, a feeding hopper welded above the front end of the feeding cylinder and communicating with the feeding cylinder, a drive motor mounted at one end of the feeding cylinder via a fixed base, and a spiral feeder located inside the feeding cylinder and connected to the drive motor via a coupling. The system includes a feed rod, several steel rods welded at equal intervals around the outside of the feed cylinder at the other end of the feed cylinder, a reinforcing steel ring welded to the end of the steel rod facing the feed cylinder to enhance the stability of the steel rod welding, a discharge box rear assembly ring located at the front end of the reinforcing steel ring and welded to the feed cylinder and steel rod, several steel rod welding rings welded at equal intervals to the other end of the steel rod, a discharge box front assembly ring welded to the end of the steel rod, and a screening cylinder inserted between several steel rods and supported by the steel rod welding rings.

[0006] Preferably, the lower end of the feeding cylinder is welded with an arc-shaped plate that is installed in conjunction with the support frame, and the arc-shaped plate is provided with several pieces at equal intervals.

[0007] Preferably, the inner edge of the rear assembly ring of the discharge box facing the discharge box is provided with an annular groove, and the radius of the annular groove is the same as the radius of the screening cylinder.

[0008] Preferably, an assembly block with screw holes is welded to the outer side of the front assembly ring of the discharge box.

[0009] Preferably, an anti-deflection block with screw holes is welded to the end edge of the screening cylinder; Furthermore, a spiral feed rod support frame is welded to the end of the screening cylinder.

[0010] Preferably, the support frame includes a support frame body and a U-shaped support rod integrally formed in the middle of the upper end of the support frame body for supporting the feeding cylinder.

[0011] Furthermore, the bottom of the U-shaped support rod at the front end of the support frame is provided with a groove.

[0012] Preferably, the discharge box includes a box body with a discharge hopper welded to the bottom, a round hole that runs horizontally through the box body to facilitate the entry of a steel rod into the box body with the screening cylinder, two rear arc-shaped plates located at the back of the box body to cooperate with the rear assembly ring of the discharge box to fix the box body, and two front arc-shaped plates located at the front of the box body to cooperate with the front assembly ring of the discharge box to fix the box body. The structure of the rear arc-shaped plates is consistent with the structure of the front arc-shaped plates.

[0013] Preferably, a rectangular slot is provided in the middle of the rear arc plate.

[0014] The beneficial effects of this utility model are as follows: 1. By tightly integrating the screw conveyor mechanism with the screening cylinder, continuous operation of dry mortar conveying and screening is realized. The drive motor drives the screw feed rod to push the material directly from the feeding cylinder into the screening cylinder. During the pushing process, qualified powder is screened out through the screen holes of the screening cylinder, while agglomerated material is pushed to the end for discharge. This avoids the cumbersome process of traditional conveying and screening or manual feeding and screening, greatly improving production efficiency and reducing intermediate links and energy consumption. 2. A specialized assembly frame, consisting of steel rods, welded steel rod rings, and reinforcing steel rings, supports and fixes the screening cylinder. The steel rods are welded at equal intervals, forming a robust cage-like support structure that effectively bears the weight of the screening cylinder and the material. The end of the screening cylinder is embedded in the annular groove of the assembly ring after the discharge box is installed. The front end is bolted to the assembly block via an anti-deflection block. The spiral feed rod support frame inside the screening cylinder provides additional support points for the spiral feed rod. Therefore, the bolt fastening and the annular groove effectively prevent the screening cylinder from deflecting or moving axially under the rotation of the spiral rod and the impact of the material, ensuring the stability and uniformity of the screening. Furthermore, it enhances the rigidity of the entire spiral feed rod and screening cylinder system, reducing vibration and shaking, making the equipment run more smoothly, with lower noise and a longer service life. The stable screening environment also ensures the consistency and reliability of the screening effect. Attached Figure Description

[0015] Figure 1 This is a structural diagram of a screening device for dry mortar production according to the present invention; Figure 2 for Figure 1 The exploded diagram. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0017] Example like Figure 1-2 As shown, a screening device for dry mortar production includes a support frame 1, a spiral feeding screening mechanism 2 fixedly installed on the support frame 1, and a discharge box 3 fixedly installed at the end of the spiral feeding screening mechanism 2 for collecting and discharging screened material.

[0018] The spiral feeding screening mechanism 2 includes a feeding cylinder 201 fixedly installed with the support frame 1, a feeding hopper 202 welded above the front end of the feeding cylinder 201 and communicating with the feeding cylinder 201, a drive motor 203 mounted on one end of the feeding cylinder 201 via a fixed base, a spiral feeding rod 204 located inside the feeding cylinder 201 and connected to the drive motor 203 via a coupling, and several steel rods 205 located at the other end of the feeding cylinder 201 and equidistantly welded around the outside of the feeding cylinder 201. 05 A reinforcing steel ring 206 facing one end of the feeding cylinder 201 to enhance the welding stability of the steel rod 205; a discharge box rear assembly ring 207 located at the front end of the reinforcing steel ring 206 and welded to the feeding cylinder 201 and the steel rod 205; several steel rod welding rings 208 equidistantly installed at the other end of the steel rod 205; a discharge box front assembly ring 209 welded to the end of the steel rod 205; and a screening cylinder 210 inserted between several steel rods 205 and supported by the steel rod welding rings 208.

[0019] The lower end of the feeding cylinder 201 is welded with an arc-shaped plate 2011 that mates with the support frame 1. Several arc-shaped plates 2011 are evenly spaced. The design of the arc-shaped plates 2011 enhances the connection strength between the feeding cylinder 201 and the support frame 1. The multiple arc-shaped plates 2011 distributed at equal intervals make the force more uniform, preventing the feeding cylinder 201 from shaking or shifting during operation. This improves the stability and durability of the entire device, reduces wear or failure caused by vibration, and ensures long-term reliable operation. An annular groove 2071 is provided on the inner edge of the rear assembly ring 207 facing the side of the discharge box 3, and the radius of the annular groove 2071 is the same as the radius of the screening cylinder 210. Specifically, after the screening cylinder 210 is inserted between several steel rods 205, its end is embedded in the annular groove 2071 and supported by the steel rod welded ring 208.

[0020] An assembly block 2091 with screw holes is welded to the outer side of the front assembly ring 209 of the discharge box.

[0021] The end edge of the screening cylinder 210 is welded with an anti-deflection block 2101 with screw holes. Specifically, the anti-deflection block 2101 contacts the assembly block 2091 and is fastened by bolts and nuts, which can prevent the screening cylinder 210 from deflecting or slipping out when screening dry mortar. The end of the screening cylinder 210 is also welded with a spiral feed rod support frame 2102, which specifically supports the spiral feed rod 204, so that the spiral feed rod 204 can smoothly push dry mortar under the drive of the drive motor 203.

[0022] The support frame 1 includes a support frame body 11 and a U-shaped support rod 12 integrally formed in the middle of the upper end of the support frame body 11 for supporting the feeding cylinder 201.

[0023] It should be further explained that the lower end of the feeding cylinder 201 is embedded inside the U-shaped support rod 12, and the arc plate 2011 is in contact with the U-shaped support rod 12. The feeding cylinder 201 can be fastened by screwing the bolt through the arc plate 2011 and into the U-shaped support rod 12. The main stress-bearing parts of the feeding cylinder 201 can support the feeding hopper 202, the drive motor 203, the spiral feed rod 204, the steel rod 205, the screening cylinder 210, and the discharge box 3.

[0024] The bottom of the U-shaped support rod 12 at the front end of the support frame 11 is provided with a groove 121. Specifically, this groove facilitates the insertion of the steel rod 205 and avoids affecting the overall installation of the screw feeding screening mechanism 2 due to the steel rod 205. Therefore, the groove 121 avoids interference between the steel rod 205 and the U-shaped support rod 12, allowing the steel rod 205 to be smoothly inserted during the installation of the screw feeding screening mechanism 2 without additional adjustment. This simplifies the assembly process, improves installation efficiency, ensures correct alignment between components, and reduces operational problems caused by installation errors.

[0025] The discharge box 3 includes a box body 31 with a discharge hopper welded to the bottom, a round hole 32 that runs horizontally through the box body 31 to facilitate the steel rod 205 to enter the box body 31 with the screening cylinder 210, two rear arc plates 33 located on the back of the box body 31 to fix the box body 31 with the rear assembly ring 207 of the discharge box, and two front arc plates 34 located in front of the box body 31 to fix the box body 31 with the front assembly ring 209 of the discharge box. The structure of the rear arc plates 33 is the same as the structure of the front arc plates 34.

[0026] A rectangular slot 331 is provided in the middle of the rear arc plate 33. Specifically, the rectangular slot 331 can accommodate the assembled anti-deflection block 2101 and the assembly block 2091.

[0027] It should be further explained that the steel rod 205, together with several steel rod welding rings 208, can form an assembly frame for supporting the screening cylinder 210. In addition, the screening cylinder 210 is connected to the feeding cylinder 201, so that the spiral feed rod 204 extends from the feeding cylinder 201 to the screening cylinder 210. When the spiral feed rod 204 is working, the dry mortar is transported from the feeding hopper 202 through the feeding cylinder 201 to the screening cylinder 210. The dry mortar is agitated in the screening cylinder 210 by the spiral feed rod 204. The screened powder falls from the screening cylinder 210 into the box 31 and is discharged from the discharge hopper of the box 31. The lumpy dry mortar is discharged from the end of the screening cylinder 210.

[0028] The above embodiments of this utility model are not intended to limit the scope of protection of this utility model. The implementation of this utility model is not limited thereto. All other modifications, substitutions or alterations made to the above structure of this utility model based on the above content of this utility model and in accordance with the common technical knowledge and conventional means in the field, without departing from the basic technical idea of ​​this utility model, shall fall within the scope of protection of this utility model.

Claims

1. A screening device for dry mortar production, comprising a support frame, a spiral feeding screening mechanism fixedly mounted on the support frame, and a discharge box fixedly mounted at the end of the spiral feeding screening mechanism for collecting and discharging screened material, characterized in that, The spiral feeding screening mechanism includes a feeding cylinder fixedly installed with a support frame, a feeding hopper welded above the front end of the feeding cylinder and communicating with the feeding cylinder, a drive motor mounted on one end of the feeding cylinder via a fixed base, a spiral feeding rod located inside the feeding cylinder and connected to the drive motor via a coupling, several steel rods located at the other end of the feeding cylinder and equidistantly welded around the outside of the feeding cylinder, a reinforcing steel ring welded to the end of the steel rod facing the feeding cylinder to enhance the stability of the steel rod welding, a discharge box rear assembly ring located at the front end of the reinforcing steel ring and welded and fixed to the feeding cylinder and steel rods, several steel rod welding rings equidistantly replaced on the other end of the steel rods, a discharge box front assembly ring welded to the end of the steel rods, and a screening cylinder inserted between the several steel rods and supported by the steel rod welding rings.

2. The screening device for dry mortar production according to claim 1, characterized in that, The lower end of the feeding cylinder is welded with an arc-shaped plate that is installed in conjunction with the support frame, and several arc-shaped plates are evenly spaced.

3. The screening device for dry mortar production according to claim 1, characterized in that, An annular groove is provided on the inner edge of the rear assembly ring of the discharge box facing the side of the discharge box, and the radius of the annular groove is the same as the radius of the screening cylinder.

4. The screening device for dry mortar production according to claim 1, characterized in that, An assembly block with screw holes is welded to the outside of the front assembly ring of the discharge box.

5. The screening device for dry mortar production according to claim 1, characterized in that, The end edge of the screening cylinder is welded with an anti-deflection block with screw holes; The end of the screening cylinder is also welded with a spiral feed rod support frame.

6. The screening device for dry mortar production according to claim 1, characterized in that, The support frame includes a support frame body and a U-shaped support rod integrally formed in the middle of the upper end of the support frame body for supporting the feeding cylinder.

7. The screening device for dry mortar production according to claim 6, characterized in that, The bottom of the U-shaped support rod at the front end of the support frame is provided with a groove.

8. The screening device for dry mortar production according to claim 1, characterized in that, The discharge box includes a box body with a discharge hopper welded to the bottom, a round hole that runs horizontally through the box body to facilitate the entry of a steel rod into the box body with the screening cylinder, two rear arc-shaped plates located at the back of the box body that can be used with the rear assembly ring of the discharge box to fix the box body, and two front arc-shaped plates located at the front of the box body that can be used with the front assembly ring of the discharge box to fix the box body. The structure of the rear arc-shaped plates is the same as that of the front arc-shaped plates.

9. The screening device for dry mortar production according to claim 1, characterized in that, A rectangular slot is provided in the middle of the rear arc plate.

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