A powder cooling and collecting device for rubber-grade zinc oxide production

Abstract

This utility model discloses a powder cooling and collection device for the production of rubber-grade zinc oxide, including a collection box with an air inlet and an air outlet. The collection box also has a cooling mechanism, and a filter collection mechanism is connected to the air inlet. This utility model relates to the field of zinc oxide powder preparation technology. This device achieves a balance between high-efficiency dust removal and low maintenance costs through the synergistic effect of double-layer filter bag gradient filtration and vibration cleaning components. The design of the cooling mechanism embedded in the filter bag annulus ensures cooling efficiency while preventing powder from directly contacting the cold source, thus avoiding agglomeration and dust contamination. The precise coordination between the annular frame and vibration transmission ensures that vibration energy is efficiently transferred to the filter bag surface, effectively solving the powder adhesion problem and improving the stability and service life of the equipment during continuous operation.

Description

Technical Field

[0001] This utility model relates to the field of zinc oxide powder preparation technology, specifically to a powder cooling and collection device for the production of rubber-grade zinc oxide. Background Technology

[0002] In the rubber production industry, zinc oxide powder is used as a crosslinking agent, activator, or accelerator. Depending on the grade of the rubber product, zinc oxide powder can be roughly divided into ordinary zinc oxide, active zinc oxide, and nano zinc oxide. These materials are classified according to their powder particle size and can be applied to the production of rubber with different requirements, effectively improving the structural strength of rubber tires.

[0003] The production of rubber-grade zinc oxide powder requires the use of cooling and filtration devices to collect the powder. Common zinc oxide powder cooling and collection devices typically consist of a collection box, a cooling system, and a filtration system. During the cooling and collection process, zinc oxide powder easily adheres to the cooling system or filter bags. For example, a zinc oxide powder cooling and filtration collection device disclosed in CN112403118A uses an air inlet pipe to collect the zinc oxide powder through multiple filter bags and cooling pipes. However, it uses a brush to clean the filter bags and cooling pipes. The brush not only occupies the space of the filter cartridge and affects the flow, but the brush itself is also more likely to adhere to the powder, easily causing material residue. In view of this, in-depth research was conducted to address the above problems, leading to this case. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a powder cooling and collection device for the production of rubber-grade zinc oxide, thus solving the existing technical problems.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a powder cooling and collection device for the production of rubber-grade zinc oxide, comprising a collection box, wherein an air inlet and an air outlet are provided on the collection box, a cooling mechanism is also provided on the collection box, and a filter collection mechanism is connected to the air inlet;

[0006] The filtration and collection mechanism includes a filter support, a material discharge channel at the bottom of the filter support, a number of support rods arranged in a ring on the filter support, a double-layer filter bag sleeved on the support rods, the double-layer filter bag communicating with the material discharge channel, and a ring skeleton embedded in the annular space of the double-layer filter bag.

[0007] The filtration and collection mechanism also includes a vibration cleaning component disposed on the double-layer filter bag;

[0008] The vibration cleaning assembly includes a vibrator, which is disposed on the top of the collection box. A vibration conductor is connected to one side of the vibrator, and the vibration conductor passes through the collection box and connects to the annular frame.

[0009] The cooling mechanism is embedded in the annular space of the double-layer filter bag.

[0010] Preferably, the collection box is a rectangular box, and the bottom of the discharge channel is connected to a discharge door.

[0011] Preferably, the vibration transmission is a metal ring, and the vibration transmission is connected to the ring frame by several bolts.

[0012] Preferably, the cooling mechanism includes a cooling ring channel, which is installed on the filter support. The cavity inside the plurality of support rods serves as a cooling flow channel. The bottom ends of the plurality of support rods are connected to the cooling ring channel, and the top ends of the plurality of support rods are connected to a return flow ring channel.

[0013] Preferably, the inner layer of the double-layer filter bag is provided with a plurality of wrapping bags, and a plurality of heat exchange fins extend from one side of the plurality of support rods, with the plurality of wrapping bags being fitted onto the plurality of heat exchange fins one by one.

[0014] Preferably, a guide fan is installed on the air outlet, and an isolation net is provided on the inner side of the guide fan.

[0015] This invention provides a powder cooling and collection device for the production of rubber-grade zinc oxide. It offers the following advantages: The device achieves a balance between high-efficiency dust removal and low maintenance costs through the synergistic effect of double-layer filter bag gradient filtration and a vibration cleaning component. The design of the cooling mechanism embedded in the annular space of the filter bag ensures cooling efficiency while preventing powder from directly contacting the cold source, thus avoiding agglomeration and dust contamination. The precise coordination between the annular frame and vibration transmission ensures efficient transfer of vibration energy to the filter bag surface, effectively solving the powder adhesion problem and improving the stability and service life of the equipment during continuous operation. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a powder cooling and collection device for the production of rubber-grade zinc oxide according to the present invention.

[0017] Figure 2 This is a partial cross-sectional view of the powder cooling and collection device for producing rubber-grade zinc oxide according to the present invention.

[0018] Figure 3 This is a schematic diagram of a partial explosion structure of a powder cooling and collection device for producing rubber-grade zinc oxide according to the present invention.

[0019] In the diagram: 1. Collection box; 2. Cooling mechanism; 3. Filter collection mechanism; 11. Air inlet; 12. Air outlet; 13. Discharge gate; 14. Guide fan; 15. Isolation net; 21. Cooling ring channel; 22. Cooling flow channel; 23. Return ring channel; 24. Heat exchange fins; 31. Filter support; 32. Support rod; 33. Annular frame; 34. Double-layer filter bag; 35. Vibrator; 36. Vibration transmission. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 This utility model provides an implementation scheme: In modern rubber and zinc oxide production processes, common zinc oxide powder cooling and collection devices typically consist of a collection box, a cooling system, and a filtration system. During the cooling and collection process, zinc oxide powder easily adheres to the cooling system or filter bag. Cleaning the cooling separation equipment with a brush can easily affect the throughput and cause dust accumulation.

[0022] This application discloses a powder cooling and collection device for the production of rubber-grade zinc oxide. The device includes a rectangular collection box 1, the side walls of which are welded from 304 food-grade stainless steel plates and the exterior is treated with carbon steel powder coating, which ensures both corrosion resistance and aesthetics. An air inlet 11 and an air outlet 12 are provided on the collection box 1, and a maintenance port is reserved on the top and equipped with a dustproof sealing cover to ensure that dust does not leak out during equipment maintenance. A cooling mechanism 2 is also provided on the collection box 1, and a filter collection mechanism 3 is connected to the air inlet 11, forming a complete path of airflow-powder separation-cooling.

[0023] The filtration and collection mechanism 3 includes a filter support 31, which is a high-strength aluminum alloy casting with an anodized surface. A conical feeding channel is provided at the bottom to reduce powder accumulation dead corners. Several support rods 32 are arranged in a ring on the filter support 31. The support rods 32 are made of hollow titanium alloy, which ensures strength while reducing weight. Double-layer filter bags 34 are fitted on the support rods 32. The outer layer of the filter bag is made of wear-resistant nylon, and the inner layer is made of ultra-fine glass fiber. Only the inner ultra-fine glass fiber works during operation. The double-layer filter bag 34 is connected to the feeding channel to ensure that the separated powder can be discharged smoothly. A ring skeleton 33 is embedded in the annular space of the double-layer filter bag 34. The skeleton is bent into shape from a lightweight stainless steel sheet, which supports the shape of the filter bag, ensures passage, and reduces friction loss during vibration.

[0024] The filtration and collection mechanism 3 also includes a vibration cleaning assembly disposed on the double-layer filter bag 34. The vibration cleaning assembly includes a vibrator 35, which is electromagnetically driven and has an adjustable frequency range of 20-60Hz to adapt to different powder adhesion levels. The vibrator 35 is disposed on the top of the collection box 1 and is fixed by a shock-absorbing bracket to reduce the impact on the box. A vibration conductor 36 is connected to one side of the vibrator 35. The vibration conductor 36 is a metal ring structure. The vibration conductor 36 passes through the collection box 1 and is connected to the ring frame 33. The vibration energy is efficiently transferred to the surface of the filter bag by bolt fastening.

[0025] The cooling mechanism 2 is embedded in the annular space of the double-layer filter bag 34, and the indirect cooling method is used to prevent the powder from getting damp and clumping or adhering to the cooling mechanism 2.

[0026] As a preferred option, the collection box 1 is a rectangular box, and its internal flow field is optimized by CFD simulation to ensure that the airflow is evenly distributed without dead corners. The bottom of the discharge channel is connected to the discharge door 13, which is pneumatically driven and has a fluororubber strip embedded in the sealing surface, which can withstand a high temperature of 150℃ and has excellent sealing performance.

[0027] As a preferred option, the vibration transmission 36 is a metal ring, and the gap between its inner diameter and the outer diameter of the ring frame 33 is controlled at 0.2-0.5mm to ensure that the vibration transmission 36 is accurate and does not deviate. The vibration transmission 36 and the ring frame 33 are connected by several bolts, and spring washers are set on the bolt heads to prevent vibration from loosening.

[0028] As a preferred embodiment, the cooling mechanism further includes a cooling ring channel 21, which is installed on the filter support 31. It adopts a ring pipe structure as a water inlet distributor. The bottom ends of several support rods 32 are connected to the cooling ring channel 21, and the top ends are connected to the return ring channel 23, forming a complete cooling circuit. The several support rods 32 have an internal cavity structure, which is the cooling flow channel 22. The cooling medium flows to the return channel through the internal channels of the support rods 32. The cooling medium is a food-grade ethylene glycol solution with a high boiling point and no corrosiveness, which is suitable for long-term circulation.

[0029] As a preferred option, the inner layer of the double-layer filter bag 34 is further provided with several wrapping bags. The wrapping bags are made of elastic silicone cloth and can fit tightly against the surface of the support rod 32. Several heat exchange fins 24 extend from one side of the support rod 32. The fins are serrated to increase the turbulence effect. Several wrapping bags are placed on the heat exchange fins 24 to form a heat exchange interface and improve the cooling efficiency.

[0030] As a preferred option, a guide fan 14 is further installed on the air outlet 12. The guide fan 14 adopts a backward-curved impeller design, which provides stable air pressure and low noise. An isolation mesh 15 is provided on the inner side of the guide fan 14. The isolation mesh 15 is made of stainless steel wire mesh with a pore size of 2mm, which prevents powder from entering the fan and ensures smooth airflow.

[0031] Workflow: Zinc oxide powder enters the filter collection mechanism 3 through the air inlet 11 with the airflow. After heat exchange with the cooling mechanism 2, the temperature decreases, and gas-solid separation is completed on the surface of the double-layer filter bag 34. After being intercepted by the filter bag, the powder slides down the support rod 32 to the discharge channel and is discharged through the discharge door 13. The airflow penetrates the filter bag and is discharged into the collection box 1. A guide fan 14 is installed on the air outlet 12. The vibrator 35 is started at regular intervals. Through the vibration transmission 36, the ring frame 33 is driven to vibrate at high frequency, causing the powder adhering to the surface of the filter bag to fall off and re-enter the discharge channel. The low-temperature medium in the cooling ring channel 21 continues to circulate, and the heat is carried away by the support rod 32 and the heat exchange fins 24 to ensure that the temperature in the filter bag area is controlled below 40°C. Finally, the purified airflow is drawn by the guide fan 14 and discharged through the air outlet 12. The isolation net 15 effectively intercepts residual dust to ensure that the emission meets the standards.

[0032] This device achieves a balance between high-efficiency dust removal and low maintenance costs through the synergistic effect of double-layer filter bags 34 gradient filtration and vibration cleaning components. The cooling mechanism 2 is embedded in the filter bag annulus, which ensures cooling efficiency and avoids powder from directly contacting the cold source, thus preventing agglomeration and dust contamination. The precise cooperation between the annular frame 33 and the vibration transmission 36 ensures that vibration energy is efficiently transferred to the filter bag surface, effectively solving the powder adhesion problem and improving the stability and service life of the equipment during continuous operation.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A powder cooling and collecting device for producing rubber-grade zinc oxide, comprising a collecting box (1), an air inlet (11) and an air outlet (12) are arranged on the collecting box (1), and a cooling mechanism (2) is arranged on the collecting box (1), characterized in that, A filter collection mechanism (3) is connected to the air inlet (11); The filter collection mechanism (3) includes a filter support (31), the bottom of which is provided with a feeding channel, and a number of support rods (32) arranged in a ring on the filter support (31). A double-layer filter bag (34) is fitted on the support rods (32), and the double-layer filter bag (34) is connected to the feeding channel. A ring skeleton (33) is embedded in the annular space of the double-layer filter bag (34). The filtration and collection mechanism (3) also includes a vibration cleaning component disposed on the double-layer filter bag (34); The vibration cleaning assembly includes a vibrator (35), which is located on the top of the collection box (1). A vibration conductor (36) is connected to one side of the vibrator (35), and the vibration conductor (36) passes through the collection box (1) and connects to the ring frame (33). The cooling mechanism (2) is embedded in the annular space of the double-layer filter bag (34).

2. The powder cooling and collecting device for rubber-grade zinc oxide production according to claim 1, characterized in that, The collection box (1) is a rectangular box, and the bottom of the discharge channel is connected to the discharge door (13).

3. The powder cooling and collection device for rubber-grade zinc oxide production according to claim 2, characterized in that, The vibration transmission (36) is a metal ring, and the vibration transmission (36) is connected to the ring frame (33) by several bolts.

4. The powder cooling and collection device for rubber-grade zinc oxide production according to claim 3, characterized in that, The cooling mechanism includes a cooling ring channel (21), which is installed on the filter support (31). The cavity inside the several support rods (32) is a cooling flow channel (22). The bottom end of the several support rods (32) is connected to the cooling ring channel (21), and the top end of the several support rods (32) is connected to a return ring channel (23).

5. The powder cooling and collecting device for rubber-grade zinc oxide production according to claim 4, characterized in that, The inner layer of the double-layer filter bag (34) is provided with several wrapping bags, and several heat exchange fins (24) extend from one side of several support rods (32), with several wrapping bags being fitted onto several heat exchange fins (24).

6. The powder cooling and collecting device for rubber-grade zinc oxide production according to claim 5, characterized in that, A guide fan (14) is installed on the air outlet (12), and an isolation net (15) is provided on the inner side of the guide fan (14).

Images