An environmentally friendly enclosed grinding mill sand mixer
Patent Information
- Application Number
- CN202522017364.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-09-19
AI Technical Summary
[0005]为了解决目前的一种环保型封闭式碾轮混砂机由于其本身的设计特点，本发明人发现虽有部分设备尝试加装外部吸尘装置，但仅是将粉尘抽取后简单排放，未能实现资源的回收利用，且资源浪费问题依然存在的情况，本申请提供一种环保型封闭式碾轮混砂机
1.通过采用完全封闭的混砂腔壳体，从源头将粉尘禁锢在密闭空间内，杜绝了粉尘向外界的扩散，极大改善了车间工作环境，完全保障了操作人员的健康安全，满足最严格的环保法规要求；
Smart Images
Figure CN224700013U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of construction equipment technology, and in particular to an environmentally friendly enclosed grinding wheel sand mixer. Background Technology
[0002] In industries such as casting, building materials, and chemicals, roller sand mixers are commonly used material mixing equipment. Currently, most traditional roller sand mixers are open or semi-enclosed structures. During operation, the rollers crush and mix materials such as sand and binders, easily generating large amounts of dust. This dust permeates the entire workshop, causing serious environmental pollution, leading to equipment dust accumulation and frequent electrical malfunctions. More importantly, it severely harms the respiratory health of operators, easily causing occupational diseases such as pneumoconiosis.
[0003] In addition, in an open environment, some lightweight and fine precious raw material particles (such as resin and coal powder) will be lost into the air with the airflow and cannot participate in the mixing process, resulting in waste of raw materials and increased production costs.
[0004] Although some equipment has attempted to install external dust collection devices, these only extract the dust and then simply discharge it, failing to achieve resource recycling and utilization, and the problem of resource waste still exists. Utility Model Content
[0005] In order to address the problem that, due to the inherent design characteristics of current environmentally friendly enclosed roller sand mixers, although some equipment has attempted to be equipped with external dust collection devices, these devices only extract dust and then simply discharge it, failing to achieve resource recycling and utilization, and the problem of resource waste still exists. Therefore, this application provides an environmentally friendly enclosed roller sand mixer.
[0006] The environmentally friendly enclosed roller sand mixer provided in this application adopts the following technical solution: it includes a frame and a drive motor, and also includes a completely enclosed sand mixing chamber shell fixedly installed on the frame, a feed port installed on the top of the sand mixing chamber shell, a discharge port installed on one side of the lower end face of the sand mixing chamber shell, a sand mixing device installed in the inner cavity of the sand mixing chamber shell, and a dust recovery device connected to the sand mixing chamber shell. The dust recovery device includes a cyclone separator, a dust collection pipe, a filter box, and a recovery pipe; the air inlet of the cyclone separator is connected to the upper part of the sand mixing chamber shell through the dust collection pipe; the exhaust end of the cyclone separator is connected to the air inlet of the filter box through the exhaust pipe; and the filter box is provided with an exhaust port. The particulate discharge port of the cyclone separator and the particulate discharge port of the filter box are both connected to the recovery pipeline; The outlet end of the recycling pipe is connected to the sand mixing chamber shell, and the recycling pipe is equipped with a recycling pump for pumping the collected particles back to the sand mixing chamber shell.
[0007] By adopting the above technical solution, the equipment mainly includes a frame, a drive motor, a fully enclosed sand mixing chamber shell, a feed inlet, a discharge outlet, a sand mixing device, and a dust recovery device. The frame and drive motor provide overall structural and power support, ensuring stable operation and efficient operation of the equipment. The sand mixing chamber shell is the main body of the equipment; its fully enclosed design prevents dust or sand leakage, ensuring a clean operating environment. The feed inlet and discharge outlet are used for adding raw materials and discharging mixed sand, respectively, making operation simple and convenient. The sand mixing device operates within the sand mixing chamber shell, using stirring or mixing to fully mix the sand with binders or other additives, improving the uniformity and quality of the sand. The dust recovery device includes a cyclone separator, a dust collection pipe, a filter box, and a recovery pipe, effectively capturing and recovering dust generated during the sand mixing process. The cyclone separator is connected to the sand mixing chamber shell through the dust collection pipe, enabling rapid separation of most large dust particles; the filter box further filters and collects finer particles. This collected dust is returned to the sand mixing chamber shell through the recovery pipe, reducing material waste and production costs.
[0008] As a preferred embodiment, the sand mixing device includes a stirring shaft rotatably disposed at the central axis of the sand mixing chamber housing, and a plurality of stirring blades uniformly fixedly disposed on the outer periphery of the stirring shaft; the drive motor is fixedly disposed outside the sand mixing chamber housing, its output shaft is connected to the stirring shaft for transmission, and sealed bearings are provided at the connection points between the two ends of the stirring shaft and the sand mixing chamber housing.
[0009] By adopting the above technical solution, the stirring shaft, which is rotatably positioned at the central axis of the mixing chamber shell, drives the entire sand mixing process. Its function is to stir the sand within the mixing chamber through rotation, ensuring uniform mixing. Multiple stirring blades, evenly fixed on the outer periphery of the stirring shaft, directly agitate the sand, increasing the contact area between the sand particles and further improving the mixing effect. The drive motor is fixedly mounted outside the mixing chamber shell, and power transmission is achieved through the connection between the output shaft and the stirring shaft, providing power for the rotation of the stirring shaft. Both ends of the stirring shaft are connected to the mixing chamber shell through sealed bearings, ensuring no sand leakage during rotation and guaranteeing the equipment's sealing performance and operating efficiency.
[0010] As a preferred embodiment, a sealing cover plate for opening and closing is hinged to the feed inlet, and a sealing strip is provided on the contact surface between the sealing cover plate and the feed inlet.
[0011] By adopting the above technical solution, the sealing cover is connected to the feed inlet by a hinge, mainly used to open and close the feed inlet to prevent material leakage or the entry of external impurities. A sealing strip is set on the contact surface between the sealing cover and the feed inlet, which can effectively seal the interface and ensure the sealing and purity of the material.
[0012] As a preferred embodiment, an embedded observation window is provided on the side wall of the sand mixing chamber shell, and the observation window is made of tempered glass.
[0013] By adopting the above technical solution, an embedded observation window made of tempered glass is provided on the side wall of the sand mixing chamber shell. This observation window allows operators to directly observe the working conditions inside the chamber without compromising the seal of the sand mixing chamber shell, thus facilitating real-time monitoring of the sand mixing process and improving operational safety and efficiency.
[0014] As a preferred embodiment, a dust suppression component is also included, which is disposed at the top of the sand mixing chamber housing; The dust suppression assembly includes a main atomizing pipe fixedly installed at the top of the sand mixing chamber housing, a plurality of atomizing nozzles evenly arranged on the main atomizing pipe, and a conveying pipe that penetrates the wall of the sand mixing chamber housing and communicates with the main atomizing pipe. The spray direction of the atomizing nozzles is towards the working area of the sand mixing device.
[0015] By adopting the above technical solutions, the atomizing nozzle can effectively reduce the dust generated during the sand mixing process, reduce dust dispersion, thereby reducing the dust concentration in the working environment, improving the working environment, and enhancing the health and comfort of operators.
[0016] As a preferred embodiment, the filter box is provided with at least one layer of high-efficiency filter bag, which is configured as a cloth filter.
[0017] By adopting the above technical solutions, high-efficiency filter bags are used to trap and filter tiny particles in gases or liquids, providing high-efficiency filtration performance and significantly improving filtration efficiency. The structure and material of the filter bags effectively intercept dust, impurities, etc., ensuring the cleanliness of the passing medium. Bag filters, through their porous structure, further improve filtration capacity and efficiency, enabling the medium passing through the housing to achieve even higher purity.
[0018] As a preferred embodiment, a pneumatic or electric sealing discharge valve is provided at the discharge port.
[0019] By adopting the above technical solution, the main function of the pneumatic or electric sealing discharge valve installed at the discharge port is to seal and control the discharge volume during the discharge process. Specifically, the pneumatic or electric discharge valve can achieve precise control of the discharge volume through remote control, avoiding the inconvenience and errors of manual operation. This valve, driven by pneumatic or electric means, can operate stably in different working environments, ensuring the accuracy and reliability of the discharge process.
[0020] As a preferred embodiment, the inner wall of the sand mixing chamber shell is lined with a wear-resistant material layer, and the end of the stirring blade is covered with a wear-resistant alloy sleeve.
[0021] By adopting the above technical solution, the sand mixing chamber shell is lined with a wear-resistant material layer on its inner wall, which effectively improves the wear resistance of the shell and extends its service life, making it more durable, especially in high-wear environments. The wear-resistant alloy sleeve covering the end of the stirring blades provides additional protection during the stirring process, reduces blade wear, and ensures long-term stable operation of the equipment.
[0022] In summary, this application includes the following beneficial technical effects: 1. By adopting a completely enclosed sand mixing chamber shell, dust is trapped in a closed space from the source, preventing the spread of dust to the outside world, greatly improving the workshop working environment, fully protecting the health and safety of operators, and meeting the most stringent environmental protection regulations. 2. The design of the cyclone separator and filter housing automatically and continuously returns all collected particulate matter to the sand mixing process for secondary utilization via recycling pipes and pumps. This significantly improves the utilization rate of expensive raw materials, directly reduces production costs, and achieves a circular economy. 3. The feed cover with sealing strip and the embedded observation window ensure overall sealing while taking into account the convenience of feeding and observation. The built-in dust suppression component can be activated at any time to spray dust. The two-pronged approach further ensures the dust suppression effect under high dust conditions. 4. The wear-resistant lining plate on the inner wall of the sand mixing chamber and the wear-resistant alloy sleeve at the end of the mixing blades effectively resist the wear of sand particles, extend the life of the core components of the equipment, and reduce the maintenance frequency and cost. 5. From sand mixing and dust removal to material recycling, an automated closed loop is formed, reducing manual intervention, ensuring stable and reliable operation, and high production efficiency. Attached Figure Description
[0023] Figure 1 This is a structural schematic diagram of the overall structure of an environmentally friendly enclosed grinding mill sand mixer according to this application; Figure 2 This application relates to an environmentally friendly enclosed grinding mill sand mixer. Figure 1 Another structural diagram from a different perspective; Figure 3 This is a partial half-sectional view of the overall structure of an environmentally friendly enclosed grinding mill sand mixer according to this application; Figure 4 This application relates to an environmentally friendly enclosed grinding mill sand mixer. Figure 3 A structural schematic diagram of the front view.
[0024] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Sand mixing chamber shell; 21. Feed inlet; 211. Sealing cover plate; 22. Discharge port; 23. Observation window; 31. Stirring shaft; 32. Stirring blades; 4. Drive motor; 51. Atomizing main pipe; 511. Atomizing nozzle; 52. Conveying pipe; 6. Cyclone separator; 61. Dust collection pipe; 62. Discharge pipe; 7. Filter box; 71. Exhaust vent; 8. Recovery pipe; 81. Recovery pump. Detailed Implementation
[0025] The present application will be further described in detail below with reference to the accompanying drawings.
[0026] Please refer to details. Figure 1 , Figure 2 , Figure 3 and Figure 4 This application discloses an environmentally friendly enclosed roller sand mixer. It includes a frame 1 and a drive motor 4, and also includes a completely enclosed sand mixing chamber shell 2 fixedly mounted on the frame 1, a feed inlet 21 located at the top of the sand mixing chamber shell 2, a discharge port 22 located on one side of the lower end face of the sand mixing chamber shell 2, a sand mixing device located in the inner cavity of the sand mixing chamber shell 2, and a dust recovery device connected to the sand mixing chamber shell 2. The dust recovery device includes a cyclone separator 6, a dust collection pipe 61, a filter box 7, and a recovery pipe 8; the air inlet of the cyclone separator 6 is connected to the upper part of the sand mixing chamber shell 2 through the dust collection pipe 61; the exhaust end of the cyclone separator 6 is connected to the air inlet of the filter box 7 through the exhaust pipe 62; and an exhaust port 71 is provided on the filter box 7. The particulate discharge port of the cyclone separator 6 and the particulate discharge port of the filter box 7 are both connected to the recovery pipe 8. The outlet end of the recovery pipe 8 is connected to the sand mixing chamber shell 2, and the recovery pipe 8 is equipped with a recovery pump 81 for pumping the collected particles back to the sand mixing chamber shell 2.
[0027] The equipment mainly includes a frame 1, a drive motor 4, a fully enclosed sand mixing chamber shell 2, a feed inlet 21, a discharge outlet 22, a sand mixing device, and a dust recovery device. The frame 1 and drive motor 4 provide overall structural and power support, ensuring stable operation and efficient operation of the equipment. The sand mixing chamber shell 2 is the main body of the equipment; its fully enclosed design prevents dust or sand leakage, ensuring a clean operating environment. The feed inlet 21 and discharge outlet 22 are used for adding raw materials and discharging mixed sand, respectively, making operation simple and convenient. The sand mixing device operates within the sand mixing chamber shell 2, using stirring or mixing to fully mix the sand with binders or other additives, improving the uniformity and quality of the sand. The dust recovery device includes a cyclone separator 6, a dust collection pipe 61, a filter box 7, and a recovery pipe 8, which can effectively capture and recover dust generated during the sand mixing process. The cyclone separator 6 is connected to the sand mixing chamber shell 2 via the dust collection pipe 61, enabling rapid separation of most large dust particles; the filter box 7 further filters and collects finer particles. The collected dust is returned to the mixing chamber shell 2 via the recycling pipe 8, reducing material waste and production costs. The overall working principle is as follows: raw materials enter the mixing chamber shell 2 through the feed inlet 21, the drive motor 4 drives the mixing device to fully mix the sand and additives, and the generated dust airflow is separated and filtered by the cyclone separator 6 and the filter box 7. Then, the collected dust is transported back to the mixing chamber shell 2 through the recycling pipe 8, forming a closed-loop system, which improves resource utilization and production efficiency.
[0028] Please refer to details. Figure 3 and Figure 4 The sand mixing device includes a stirring shaft 31 rotatably mounted on the central axis of the sand mixing chamber housing 2, and multiple stirring blades 32 uniformly fixed on the outer periphery of the stirring shaft 31. A drive motor 4 is fixedly mounted outside the sand mixing chamber housing 2, with its output shaft connected to the stirring shaft 31. Sealed bearings are installed at both ends of the stirring shaft 31 where it connects to the sand mixing chamber housing. The stirring shaft 31, rotatably mounted on the central axis of the sand mixing chamber housing 2, drives the entire sand mixing process. Its function is to stir the sand in the sand mixing chamber through rotation, ensuring uniform mixing. The multiple stirring blades 32 uniformly fixed on the outer periphery of the stirring shaft 31 directly agitate the sand, increasing the contact area between the sand particles and further improving the mixing effect. The drive motor 4, fixedly mounted outside the sand mixing chamber housing 2, transmits power through its output shaft connection to the stirring shaft 31, providing power for the rotation of the stirring shaft 31. Sealed bearings at both ends of the stirring shaft 31 connect it to the sand mixing chamber housing, ensuring no sand leakage during rotation and guaranteeing the equipment's sealing performance and working efficiency. In terms of working principle, after the drive motor 4 starts, it transmits power to the stirring shaft 31 through the output shaft. The stirring shaft 31 drives the stirring blades 32 to rotate, which uniformly stirs the sand material in the sand mixing chamber shell 2, making the sand material composition more uniform.
[0029] Please refer to details. Figure 1 A sealing cover 211 for opening and closing is hinged to the feed inlet 21. A sealing strip is provided on the contact surface between the sealing cover 211 and the feed inlet 21. The sealing cover 211 is connected to the feed inlet 21 by hinge and is mainly used to open and close the feed inlet 21 to prevent material leakage or the entry of external impurities. The sealing strip is set on the contact surface between the sealing cover 211 and the feed inlet 21, which can effectively seal the interface and ensure the sealing and purity of the material. The working principle is as follows: When feeding is required, the operator can rotate the sealing cover 211 around the hinge point to open the feed inlet 21, which facilitates the entry of material; when feeding is not required, the sealing cover 211 is closed and the sealing strip is tightly attached to the contact surface of the feed inlet 21, effectively isolating the outside world and preventing material leakage or the entry of external impurities, thereby ensuring the quality of the material and the cleanliness of the production environment.
[0030] Please refer to details. Figure 1 An embedded observation window 23, made of tempered glass, is provided on the side wall of the sand mixing chamber shell 2. This observation window 23 allows operators to directly observe the working conditions inside the chamber without compromising the seal of the sand mixing chamber shell 2, facilitating real-time monitoring of the sand mixing process and improving operational safety and efficiency. The tempered glass material not only ensures the transparency and clarity of the observation window 23 but also enhances its mechanical strength and heat resistance, enabling it to withstand certain vibrations and temperature changes during sand mixing, ensuring the stability and reliability of the observation window 23 during long-term use. Please refer to details. Figure 3 It also includes a dust suppression component installed at the top of the sand mixing chamber housing 2; The dust suppression assembly includes an atomizing main pipe 51 fixedly installed at the top of the sand mixing chamber housing 2, multiple atomizing nozzles 511 evenly arranged on the atomizing main pipe 51, and a conveying pipe 52 that penetrates the sand mixing chamber housing 2 and connects to the atomizing main pipe 51. The spray direction of the atomizing nozzles 511 is towards the working area of the sand mixing device. The atomizing main pipe 51 is connected to a dry fog storage device externally through the conveying pipe 52. The atomizing nozzles 511 spray out the atomized mixed dry fog to achieve the dust suppression effect. The dry fog storage device is selected according to different specifications based on the number of atomizing nozzles 511 and the length of the pipe. It uses a combination of compressed air and softened water or pure water to achieve a fine atomization effect. Furthermore, it is appropriately introduced through PLC programming so that the dry fog system automatically turns on when the sand mixer starts and turns off after a delay (e.g., a 30-second delay to capture residual dust after shutdown) when the sand mixer stops, reducing ineffective spraying. These atomizing nozzles 511 are directed directly towards the working area of the sand mixing device, reducing the dust generated during the sand mixing process and minimizing dust dispersion. This reduces the dust concentration in the working environment, improves the working conditions, and enhances the health and comfort of operators. The working principle is that when the sand mixing device is operating, the generated dust is contacted by the atomized dust-suppressing gas, thereby reducing the amount of dust suspended in the air and achieving a dust suppression effect.
[0031] Please refer to details. Figure 2 The filter housing 7 contains at least one layer of high-efficiency filter bags, which are designed as bag filters. These high-efficiency filter bags are used to trap and filter fine particulate matter in the gas, providing high-efficiency filtration performance and significantly improving the filtration effect. The structure and material of the filter bags effectively intercept dust, impurities, etc., ensuring the cleanliness of the passing medium. The bag filter, through its porous structure, further enhances the filtration capacity and efficiency, enabling the medium passing through the housing to achieve a higher purity.
[0032] Please refer to details. Figure 4 A pneumatic or electric sealing discharge valve is installed at the discharge port 22. The main function of this valve is to seal and control the discharge volume during the discharge process. Specifically, the pneumatic or electric discharge valve allows for precise control of the discharge volume via remote control, avoiding the inconvenience and errors of manual operation. This valve, driven by pneumatic or electric power, can operate stably in various working environments, ensuring the accuracy and reliability of the discharge process. During discharge, when the valve is closed, it effectively isolates the material, ensuring a reliable seal at the discharge port 22 and preventing material leakage or the entry of external impurities. When discharge is required, the valve opens, allowing the material to be smoothly discharged through the discharge port 22.
[0033] Please refer to details. Figure 3The inner wall of the sand mixing chamber shell 2 is lined with a wear-resistant material layer, and the ends of the stirring blades 32 are covered with wear-resistant alloy sleeves. The wear-resistant material lining of the inner wall of the sand mixing chamber shell 2 effectively improves the wear resistance of the shell and extends its service life, making it particularly durable in high-wear environments. The wear-resistant alloy sleeves covering the ends of the stirring blades 32 provide additional protection during mixing, reducing blade wear and ensuring long-term stable operation of the equipment. Overall, this design, through the combined use of the wear-resistant material layer and the wear-resistant alloy sleeves, significantly improves the equipment's working efficiency and lifespan, while reducing maintenance costs and downtime.
[0034] The implementation principle of an environmentally friendly closed-type grinding mill in this application embodiment is as follows: During use, raw materials enter the mixing chamber shell 2 through the feed port 21. After the drive motor 4 starts, it transmits power to the stirring shaft 31 through the output shaft. The stirring shaft 31 drives the stirring blades 32 to rotate, uniformly stirring the sand in the mixing chamber shell 2, making the sand composition more uniform. The generated dust airflow is separated and filtered through the cyclone separator 6 and the filter box 7, and then the collected dust is transported back to the mixing chamber shell 2 through the recovery pipe 8, forming a closed-loop system, which improves resource utilization and production efficiency. During the unloading process, when the unloading valve is closed, it can effectively isolate the material, ensure that the unloading port 22 is sealed reliably, and prevent material leakage or external impurities from entering. When unloading is required, the valve is opened, and the material can be smoothly discharged through the unloading port 22.
[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. An environmentally friendly enclosed roller sand mixer, comprising a frame (1) and a drive motor (4), characterized in that: It also includes a completely enclosed sand mixing chamber shell (2) fixedly installed on the frame (1), a feed inlet (21) installed on the top of the sand mixing chamber shell (2), a discharge port (22) installed on one side of the lower end face of the sand mixing chamber shell (2), a sand mixing device installed in the inner cavity of the sand mixing chamber shell (2), and a dust recovery device connected to the sand mixing chamber shell (2). The dust recovery device includes a cyclone separator (6), a dust collection pipe (61), a filter box (7), and a recovery pipe (8); the air inlet of the cyclone separator (6) is connected to the upper part of the sand mixing chamber shell (2) through the dust collection pipe (61); the exhaust end of the cyclone separator (6) is connected to the air inlet of the filter box (7) through the exhaust pipe (62); and an exhaust port (71) is provided on the filter box (7). The particulate discharge port of the cyclone separator (6) and the particulate discharge port of the filter box (7) are both connected to the recovery pipe (8); The outlet end of the recycling pipe (8) is connected to the sand mixing chamber shell (2), and the recycling pipe (8) is equipped with a recycling pump (81) for pumping the collected particles back to the sand mixing chamber shell (2).
2. The environmentally friendly enclosed roller sand mixer according to claim 1, characterized in that: The sand mixing device includes a stirring shaft (31) rotatably disposed at the central axis of the sand mixing chamber shell (2), and a plurality of stirring blades (32) uniformly fixed on the outer periphery of the stirring shaft (31).
3. The environmentally friendly enclosed roller sand mixer according to claim 2, characterized in that: The drive motor (4) is fixedly installed outside the sand mixing chamber housing (2), and its output shaft is connected to the stirring shaft (31) for transmission. Sealed bearings are provided at the connection points between the stirring shaft (31) and the sand mixing chamber housing.
4. The environmentally friendly enclosed roller sand mixer according to claim 3, characterized in that: A sealing cover plate (211) for opening and closing is hinged to the feed inlet (21), and a sealing strip is provided on the contact surface between the sealing cover plate (211) and the feed inlet (21).
5. The environmentally friendly enclosed roller sand mixer according to claim 4, characterized in that: An embedded observation window (23) is provided on the side wall of the sand mixing chamber shell (2), and the observation window (23) is made of tempered glass.
6. The environmentally friendly enclosed roller sand mixer according to claim 5, characterized in that: It also includes a dust suppression assembly disposed at the top of the sand mixing chamber housing (2); The dust suppression assembly includes an atomizing main pipe (51) fixedly installed at the top of the sand mixing chamber housing (2), a plurality of atomizing nozzles (511) evenly arranged on the atomizing main pipe (51), and a conveying pipe (52) that penetrates the sand mixing chamber housing (2) and communicates with the atomizing main pipe (51).
7. The environmentally friendly enclosed roller sand mixer according to claim 6, characterized in that: The spray direction of the atomizing nozzle (511) is toward the working area of the sand mixing device.
8. The environmentally friendly enclosed roller sand mixer according to claim 7, characterized in that: The filter housing (7) is provided with at least one layer of high-efficiency filter bag, which is a cloth filter.