A uniform drying device for mortar

Abstract

The present application relates to the technical field of mortar drying, in particular to a uniform drying device for mortar, which comprises a cylinder, an integral support, a supporting wheel device, a transmission device, and a cleaning box, the supporting wheel device and the transmission device are arranged on the integral support, the cylinder is arranged on the integral support through a supporting roller ring, the cleaning box is connected with the tail of the cylinder, a filter plate is arranged in the connecting pipe of the cleaning box, a filter cartridge is arranged in the exhaust part of the cleaning box, so as to facilitate the exhaust of waste gas, the uniform drying device for mortar, the spiral disturbance piece arranged in the cylinder is designed in an inverted L shape and forms a specific angle with the cylinder wall, which promotes the mortar to form a more sufficient overturning and scattering state in the rotating process of the cylinder, effectively breaks the material aggregation phenomenon, and increases the hot air contact area; the scraper blades uniformly distributed on the inner wall of the tail further assist the dispersion of the material, reduce the residue, and jointly ensure that the mortar is heated more uniformly in the drying process.

Description

Technical Field

[0001] This invention relates to the field of mortar drying technology, specifically to a uniform drying device for mortar. Background Technology

[0002] Dry-mixed mortar, as an indispensable basic material in modern construction engineering, directly affects the strength, durability, and construction efficiency of building structures. The drying process is a crucial step in the production process, determining the moisture content of the finished mortar. The level and stability of the moisture content profoundly influence the mortar's fluidity, setting time, hardened mechanical strength, and crack resistance during long-term use. Therefore, achieving efficient and uniform drying is one of the core technical challenges in ensuring the quality of dry-mixed mortar products.

[0003] Currently, hot air circulating drying equipment is widely used in the industry to process mortar raw materials, with the three-cylinder dryer being the mainstream choice due to its structural characteristics and thermal efficiency advantages. This type of equipment typically consists of several core components, including a cylinder for containing and conveying materials, a transmission device providing power, an overall support frame, rollers that support and drive the cylinder's rotation, sealing devices to prevent heat and dust leakage, a discharge hood to guide material out, and a baffle wheel device to maintain the axial stability of the cylinder. From a design perspective, existing technologies mainly focus on optimizing the efficiency of thermal energy recycling. For example, by setting reasonable inlet and outlet positions, as well as flue gas inlet and internal steering structures, attempts are made to guide hot air and materials to form a more effective counter-current or co-current contact path, aiming to absorb as much heat and evaporate moisture as possible as the material moves from the inlet to the outlet.

[0004] However, in actual industrial production, existing drying technologies have revealed a significant and insurmountable flaw: achieving ideal uniformity in the drying process is difficult. Materials, especially mortar particles with a certain degree of viscosity or prone to agglomeration, easily form clumps or accumulate as they are conveyed forward within the rotating drum. This makes it difficult for hot air to penetrate the material layer, resulting in significant differences in the heating conditions of materials in different areas of the drum. Some areas may become over-dried due to prolonged exposure to high-temperature hot air, even exhibiting localized charring; while other areas, especially inside material clumps or at the bottom of the accumulation layer, may retain more moisture due to insufficient hot air contact. This uneven drying directly leads to uneven moisture content distribution within the same batch of finished mortar.

[0005] The unevenness of moisture content has a series of negative impacts on the final performance of mortar products. It reduces product quality stability, leading to greater performance fluctuations between different packages or batches of mortar. More importantly, it impairs key performance characteristics of the mortar. For example, excessively high moisture content may result in poor mortar fluidity, prolonged setting time, or insufficient hardened strength; while excessively low moisture content may increase dust, affect workability, or increase the risk of early cracking. Although existing equipment incorporates numerous design considerations in heat transfer paths and material conveying mechanisms, ensuring that mortar particles are continuously, fully, and uniformly dispersed and dispersed throughout the dynamic drying process, maximizing their contact with hot air to achieve a high degree of moisture content consistency, remains a core challenge that current drying technologies urgently need to address. This problem restricts the improvement of the overall quality of dry-mixed mortar products and the further optimization of production efficiency.

[0006] Therefore, we propose a uniform drying device for mortar. Summary of the Invention

[0007] One of the technical problems this application aims to solve is how to ensure that mortar particles can be continuously, fully and evenly dispersed and lifted throughout the entire dynamic drying process, so as to maximize their contact with hot air and thus achieve a high degree of consistency in moisture content. This remains a core problem that existing drying technologies urgently need to solve.

[0008] To solve the above-mentioned technical problems, this application provides a uniform drying device for mortar, including a cylinder, an integral support, a roller support device, a transmission device, and a cleaning box. The roller support device and the transmission device are mounted on the integral support, the cylinder is mounted on the integral support through roller rings, and the cleaning box is connected to the tail interface of the cylinder. The inside of the cylinder is equipped with spirally arranged disturbance plates, a filter plate is installed in the connecting pipe of the cleaning box, and a filter cartridge is installed in the exhaust section of the cleaning box to facilitate the discharge of waste gas.

[0009] In some embodiments, a feed inlet is provided at one end of the cylinder, a support roller ring is provided around the cylinder, and a tail interface is provided at the other end of the cylinder.

[0010] In some embodiments, a scraper is provided on the inner wall of the tail interface. The scraper is arranged in a uniform circular array on the inner wall of the tail interface. The disturbance plate is inverted L-shaped and forms a certain angle with the inner wall of the cylinder. This facilitates the tumbling and scattering effect of the mortar when it tumbles in the cylinder, and spreads the mortar more evenly, thereby improving the efficiency and uniformity of drying.

[0011] In some embodiments, the outer side of the idler roller ring is in tangential contact with the outer side of the idler roller device, a temperature sensor is provided on the inner wall of the cylinder, and a heating wire is provided in the inner wall of the cylinder.

[0012] In some embodiments, a connecting pipe is provided above the bottom of the cleaning box, and a filter plate is provided inside the connecting pipe, with a plurality of filter holes evenly arranged on the filter plate.

[0013] In some embodiments, a fan is provided above the connecting pipe, blades are provided inside the fan, and a motor is provided behind the blades.

[0014] In some embodiments, an exhaust section is provided above the fan, and a filter cartridge is provided inside the exhaust section, with filter holes provided on the side wall of the filter cartridge.

[0015] In some embodiments, an exhaust cover is provided above the filter cartridge, and a plurality of exhaust holes are evenly provided on the exhaust cover.

[0016] In some embodiments, the cross-sectional diameter of the filter cartridge is larger than the diameter covered by the exhaust cap.

[0017] In some embodiments, the connection pipe, the fan, and the exhaust section are all detachable.

[0018] This invention has at least the following beneficial effects: 1. The spiral agitator inside the cylinder features an inverted L-shaped design, forming a specific angle with the cylinder wall. During cylinder rotation, this promotes more thorough tumbling and dispersion of the mortar, effectively breaking up material agglomeration and increasing the hot air contact area. Evenly distributed scrapers on the inner wall of the tail section further assist in material dispersion, reducing residue. Together, these features ensure more uniform heating of the mortar during drying, more precise moisture content control, and thus improved flowability and overall performance of the finished product.

[0019] 2. The built-in temperature sensor and heating wire enable real-time monitoring and adjustment of the temperature inside the cylinder, dynamically optimizing the heat field distribution according to the material state to avoid localized overheating or insufficient drying. The cleaning chamber adopts a multi-stage filtration design. The filter plate inside the connecting pipe performs preliminary filtration through evenly distributed filter holes, while the filter cartridge in the exhaust section performs secondary fine filtration through side wall filter holes. Combined with the exhaust hole design of the exhaust cover, it effectively intercepts dust and ensures that exhaust gas meets emission standards, reducing environmental pollution.

[0020] 3. The device's structural connections are detachable, such as the connecting pipes between the cleaning box, the fan, and the exhaust section. This facilitates disassembly, cleaning, or replacement of components like filter plates and filter cartridges, reducing maintenance difficulty and extending equipment lifespan. The tangential contact design between the idler roller ring and the support roller device ensures the stability of the cylinder rotation, further supporting the realization of the aforementioned uniform drying and high-efficiency filtration functions. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the overall structure of the present invention; Figure 3for Figure 2 Sectional view of AA in the middle; Figure 4 This is a front view of the overall structure of the present invention; Figure 5 for Figure 4 BB solid section view; Figure 6 for Figure 5 Enlarged view at point C; Figure 7 for Figure 5 Enlarged view of point D in the middle.

[0022] In the diagram, 100-cylinder; 101-feed inlet; 102-support roller ring; 103-tail interface; 104-disturbance plate; 105-scraper; 200-integral support; 300-support roller device; 400-transmission device; 500-cleaning box; 501-connecting pipe one; 502-fan; 5021-motor; 503-exhaust section; 5031-exhaust cover; 5032-exhaust hole; 504-blade; 505-filter cartridge; 5051-filter hole one; 506-discharge port; 507-filter plate; 5071-filter hole two. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] Example 1, see Figure 1-7 The present invention provides a technical solution: a uniform drying device for mortar, including a cylinder 100, an integral support 200, a roller support device 300, a transmission device 400, and a cleaning box 500. The roller support device 300 and the transmission device 400 are mounted on the integral support 200, the cylinder 100 is mounted on the integral support 200 through roller rings 102, and the cleaning box 500 is connected to the tail interface 103 of the cylinder 100. The cylinder 100 is provided with spirally arranged disturbance plates 104 inside, the cleaning box 500 is provided with filter plate 507 in the connecting pipe 501, and the cleaning box 500 is provided with filter cartridge 505 in the exhaust section 503 to facilitate the discharge of waste gas.

[0025] Specifically, the design principle of this device is based on optimizing the dynamic dispersion of mortar and the efficiency of waste gas treatment during the drying process. The spiral agitator 104 inside the cylinder 100 adopts an inverted L-shaped structure. The specific angle formed between the spiral agitator and the cylinder wall continuously lifts and scatters mortar particles as the cylinder 100 rotates. This motion pattern forces the material to repeatedly undergo a process of being lifted and scattered during axial movement, effectively breaking up particle agglomeration and increasing the contact area and contact time between the material and the hot air. The annular array of scrapers 105 on the inner wall of the tail inlet 103 further assists in peeling off adhering materials, reducing residue. Together, these two elements ensure that the mortar remains fully dispersed throughout the drying process.

[0026] In terms of thermal management, temperature sensors embedded in the inner wall of the cylinder 100 monitor the material temperature in real time, forming a closed-loop temperature control system in conjunction with the built-in heating wire. This system can dynamically adjust the heat field distribution according to changes in the moisture content of the material, avoiding local overheating or insufficient drying, and ensuring uniformity from the heat source level.

[0027] The cleaning chamber 500 is connected to the tail interface 103 via connecting pipe 501, and employs a two-stage filtration mechanism. The filter plate 507 in connecting pipe 501 performs primary interception of dust-laden exhaust gas through evenly distributed filter holes 5071, capturing larger particles. The gas is then accelerated by fan 502 and enters exhaust section 503, where the built-in filter cartridge 505 performs secondary fine filtration through side wall filter holes 5051. The pore size of filter holes 5051 is larger than the diameter of the exhaust holes 5032 on exhaust cover 5031, forming a gradient filtration barrier that ensures controllable exhaust gas resistance while efficiently trapping fine dust. The evenly spaced openings on exhaust cover 5031 ensure uniform airflow distribution and prevent localized blockages.

[0028] In terms of structural connections, the connecting pipe 501, fan 502, and exhaust section 503 are detachably connected, facilitating regular cleaning of dust accumulation on filter plate 507 or replacement of filter cartridge 505 to maintain filtration efficiency. The tangential contact design between the idler roller ring 102 and the idler roller device 300 provides stable rotational support, ensuring the smooth rotation of the cylinder 100 and providing a fundamental mechanical guarantee for the effective material dispersion achieved by the agitator plate 104. The overall design systematically improves drying uniformity and environmental friendliness through the synergistic effect of enhanced material dispersion, precise temperature control, and efficient filtration.

[0029] Example 2, see Figure 1-7The cylinder 100 has a feed inlet 101 at one end, a roller ring 102 around its periphery, and a tail inlet 103 at the other end. Scraper blades 105 are arranged in a uniform circular array on the inner wall of the tail inlet 103. Agitator blades 104 are inverted L-shapes and form a certain angle with the inner wall of the cylinder 100, facilitating tumbling and spreading of the mortar within the cylinder, thus improving the efficiency and uniformity of drying. The outer surface of the roller ring 102 is tangentially in contact with the outer surface of the roller support device 300. A temperature sensor and heating wire are installed on the inner wall of the cylinder 100.

[0030] Specifically, this structural design aims to optimize the dynamic dispersion and thermal field control of the mortar drying process. The cylinder 100 receives wet mortar through the feed inlet 101. As the material moves axially within the rotating cylinder 100, the inverted L-shaped disturbance plates 104 continuously lift and scatter material particles at a specific angle formed with the cylinder wall. This motion forces the mortar to repeatedly undergo a process of lifting and scattering, effectively breaking up particle agglomeration and increasing the exposed surface area of ​​the material. The scraper blades 105, arranged in a ring array on the inner wall of the tail inlet 103, peel off adhering residue during the material discharge stage, working in conjunction with the disturbance plates 104 to ensure the material remains dispersed throughout the process, creating the basic conditions for uniform heating.

[0031] The tangential contact design between the idler roller ring 102 and the roller support device 300 provides stable rotational support, ensuring the smooth rotation of the cylinder 100. This mechanical stability is a prerequisite for the effective material dispersion of the disturbance plate 104, preventing the dispersion action from failing due to the shaking of the cylinder 100.

[0032] Temperature sensors installed on the inner wall of the cylinder 100mm monitor material temperature changes in real time, forming a closed-loop temperature control system in conjunction with embedded heating wires. This system dynamically adjusts the heating wire power output based on real-time temperature feedback from different areas of the material, achieving precise control of the heat field distribution. This dynamic temperature management promptly corrects localized overheating or underheating areas, ensuring drying uniformity from the heat source level and avoiding moisture content differences caused by temperature gradients. The overall structure, through the synergy of mechanical dispersion, stable rotation, and intelligent temperature control, systematically improves drying efficiency and the consistency of finished product quality.

[0033] Example 3, see Figures 1-7A connecting pipe 501 is installed above the bottom of the cleaning box 500. A filter plate 507 is installed inside the connecting pipe 501, and several filter holes 5071 are evenly distributed on the filter plate 507. A fan 502 is installed above the connecting pipe 501, and blades 504 are installed inside the fan 502. A motor 5021 is installed behind the blades 504. An exhaust section 503 is installed above the fan 502, and a filter cartridge 505 is installed inside the exhaust section 503. Filter holes 5051 are provided on the side wall of the filter cartridge 505. An exhaust cover 5031 is installed above the filter cartridge 505, and several exhaust holes 5032 are evenly distributed on the exhaust cover 5031.

[0034] Specifically, the design principle of this exhaust gas treatment system is based on staged filtration and airflow optimization. Connecting pipe 501 serves as the first channel for exhaust gas to enter the cleaning chamber 500. The filter plate 507 inside the pipe uses evenly distributed filter holes 5071 to perform primary interception of dust-laden gas. This porous structure effectively captures larger particles discharged with the exhaust gas, such as mortar debris generated by material collisions or incompletely dried agglomerated particles, preventing them from entering subsequent equipment and causing blockages or wear.

[0035] The fan 502 drives the blades 504 to rotate via the motor 5021, creating a stable negative pressure airflow in the system. This negative pressure has a dual function: on the one hand, it draws the exhaust gas inside the cylinder 100 to flow continuously towards the cleaning box 500, ensuring the airflow circulation efficiency during the drying process; on the other hand, it accelerates the airflow through the filter plate 507, reducing the adhesion and accumulation of dust on the surface of the filter holes 5071, and lowering the risk of filter clogging.

[0036] After primary filtration, the airflow enters the exhaust section 503, where it undergoes secondary fine filtration through densely arranged filter holes 5051 on the sidewall of the filter cartridge 505. The pore size of filter holes 5051 is smaller than that of filter holes 5071, allowing for efficient trapping of even smaller dust particles. Specifically, the cross-sectional diameter of filter holes 5051 is designed to be larger than the diameter of the exhaust holes 5032 covered by the exhaust cover 5031, creating a pore size gradient. This structure forms a buffer layer inside the filter cartridge 505, preventing dust-laden gas from directly impacting the exhaust holes 5032, thus reducing the risk of penetration into the filter cartridge 505 and ensuring uniform airflow distribution.

[0037] The evenly arranged exhaust holes 5032 on the exhaust cover 5031 further optimize the airflow distribution. Their uniform opening design prevents dust escape caused by excessive local airflow velocity, while also preventing localized clogging of the filter cartridge 505 due to concentrated airflow. The entire exhaust gas treatment process, through the coarse filtration protection of the filter plate 507, the fine filtration interception of the filter cartridge 505, and the uniform flow control of the exhaust holes 5032, achieves efficient dust interception and low-resistance emission, ensuring that exhaust gas emissions meet environmental protection requirements.

[0038] Example 4, see Figures 1-7The cross-sectional diameter of the filter cartridge 505 is larger than the diameter covered by the exhaust cover 5031. The connecting pipe 501, the fan 502, and the exhaust section 503 are all detachable connections.

[0039] Specifically, the cross-sectional diameter of filter orifice 5051 is designed to be larger than the diameter of the area covered by exhaust cover 5031. This dimensional relationship forms a gradient barrier in the filtration mechanism. When dust-laden airflow penetrates filter orifice 5051 of filter cartridge 505, the airflow velocity is relatively slowed down due to the larger orifice diameter, making it easier for dust particles to settle on the inner wall of filter cartridge 505. At the same time, this orifice design ensures that the airflow does not concentrate on impacting a local area of ​​exhaust cover 5031, but rather diffuses evenly throughout the entire space of filter cartridge 505. Exhaust hole 5032 on exhaust cover 5031, because its diameter is smaller than filter orifice 5051, constitutes the final emission barrier, further trapping any escaping fine dust. This hierarchical structure with decreasing orifice diameter maintains airflow permeability while improving filtration efficiency through multiple interceptions.

[0040] The connecting pipe 501, fan 502, and exhaust section 503 employ a detachable connection structure. This design directly improves the maintainability of the equipment. During long-term operation, filter plate 507 accumulates trapped dust, and the filter holes 5051 of filter cartridge 505 may gradually become clogged due to dust accumulation. The detachable connection allows operators to quickly separate the components, directly remove filter plate 507 for cleaning or replacement, and also remove filter cartridge 505 separately for cleaning or replacement. This modular disassembly and assembly method eliminates the need to dismantle the entire exhaust gas treatment system, significantly reducing maintenance time and manpower. Simultaneously, the reliable sealing design of the connection points ensures airtightness during reassembly after disassembly, preventing the leakage of unfiltered gas. This structure fundamentally reduces the difficulty of long-term equipment maintenance and downtime.

[0041] Working process: Mortar enters the inner wall of cylinder 100 through inlet 101. The transmission device 400 on the overall support 200 is activated, driving the roller device 300 to rotate. The rotation of the roller device 300 drives the roller ring 102 of cylinder 100 to rotate, thus rotating cylinder 100. A temperature sensor installed on the inner wall of cylinder 100 can detect the internal temperature, thereby adjusting the temperature of the heating wire on the inner wall of cylinder 100. During rotation, the disturbance plate 104 on the inner wall of cylinder 100 forms a certain angle with the inner wall, facilitating tumbling and scattering of the mortar inside the cylinder, resulting in more even mortar distribution and improved drying efficiency and uniformity. After drying, the mortar is conveyed to the outside through tail inlet 103. The scraper 105 at tail inlet 103 evenly disperses the mortar, which then enters the cleaning box 500. The motor 5021 is activated, causing the blades 504 to rotate and generate airflow, causing the exhaust gas and dust of the mortar in the cleaning box 500 to flow upwards. Dust enters the blower 502 through the filter holes 5071 of the filter plate 507 of the connecting pipe 501, and then continues upward into the exhaust section 503. The exhaust gas enters the filter cartridge 505 of the exhaust section 503 and is discharged through the exhaust cover 5031 of the exhaust section 503. Dust enters the space between the filter cartridge 505 and the exhaust section 503 and falls back onto the filter plate 507. The mortar is discharged from the discharge port 506. Afterwards, simply stop the rotation of the cylinder 100, and the connecting pipe 501, blower 502, and exhaust section 503 can be disassembled for cleaning.

Claims

1. A uniform drying device for mortar, comprising a cylinder (100), an integral support (200), a roller device (300), and a transmission device (400), characterized in that: It also includes a cleaning box (500), the roller device (300) and the transmission device (400) are mounted on the overall support (200), the cylinder (100) is mounted on the overall support (200) through the roller ring (102), and the cleaning box (500) is connected to the tail interface (103) of the cylinder (100); The cylinder (100) is provided with a spirally arranged disturbance plate (104) inside, the cleaning box (500) is provided with a filter plate (507) in the connecting pipe (501), and the cleaning box (500) is provided with a filter cartridge (505) in the exhaust section (503) to facilitate the discharge of waste gas.

2. The uniform drying device for mortar according to claim 1, characterized in that: The cylinder (100) has a feed inlet (101) at one end, a roller ring (102) around the outer periphery of the cylinder (100), and a tail interface (103) at the other end of the cylinder (100).

3. The uniform drying device for mortar according to claim 2, characterized in that: The inner wall of the tail interface (103) is provided with scraper blades (105). The scraper blades (105) are arranged in a uniform circular array on the inner wall of the tail interface (103). The disturbance blade (104) is inverted L-shaped and forms a certain angle with the inner wall of the cylinder (100). This facilitates the mortar to turn over and spread more evenly when it turns over in the cylinder, thereby improving the efficiency and uniformity of drying.

4. A uniform drying device for mortar according to claim 3, characterized in that: The outer side of the idler roller ring (102) is in tangential contact with the outer side of the idler roller device (300). A temperature sensor is provided on the inner wall of the cylinder (100), and a heating wire is provided in the inner wall of the cylinder (100).

5. A uniform drying device for mortar according to claim 4, characterized in that: A connecting pipe (501) is provided above the bottom of the cleaning box (500), and a filter plate (507) is provided inside the connecting pipe (501). A plurality of filter holes (5071) are evenly provided on the filter plate (507).

6. A uniform drying device for mortar according to claim 5, characterized in that: A fan (502) is provided above the connecting pipe (501), and a blade (504) is provided inside the fan (502). A motor (5021) is provided behind the blade (504).

7. A uniform drying device for mortar according to claim 6, characterized in that: An exhaust section (503) is provided above the fan (502), and a filter cartridge (505) is provided inside the exhaust section (503). A filter hole (5051) is provided on the side wall of the filter cartridge (505).

8. A uniform drying device for mortar according to claim 7, characterized in that: An exhaust cover (5031) is provided above the filter cartridge (505), and a plurality of exhaust holes (5032) are evenly provided on the exhaust cover (5031).

9. A uniform drying device for mortar according to claim 8, characterized in that: The cross-sectional diameter of the filter cartridge (505) is larger than the diameter covered by the exhaust cover (5031).

10. A uniform drying device for mortar according to claim 9, characterized in that: The connecting pipe (501), the fan (502), and the exhaust section (503) are all detachably connected.

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