Particle cooling and screening equipment for pelletizer and pelletizer
By designing a particle cooling and screening device, effective removal of powder impurities and particle cooling were achieved, solving product quality and safety hazards in granulators, improving production efficiency and safety, and ensuring the consistency of particle shape and size.
Patent Information
- Application Number
- CN202520585385.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Existing granulators suffer from product quality defects, low production efficiency, and safety hazards, including high impurity content in finished products, poor thermal stability, easy mixing of powder leading to structural defects, lack of equipment cooling system causing particle adhesion and deformation, low conveying and screening efficiency, and dust environment that can easily cause explosions.
Design a particle cooling screening device that includes a vibrating screen, a blowing and conveying device, a centrifugal screen, and a cooling device. Through two screening and cooling processes, powder impurities are removed, dust concentration is reduced, and particle adhesion and deformation are prevented. The cooling device is used to cool down the particles during screening.
It improves product quality stability and pass rate, reduces the risk of dust explosion, enhances production efficiency and safety, ensures regular particle shape and uniform size, and reduces defect rate and unit energy consumption.
Smart Images
Figure CN223918383U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of granulator is used particle cooling and screening equipment and granulator. BACKGROUND
[0002] As the core equipment of industrial production (especially in the field of plastic processing), granulator undertakes the key task of processing raw materials into specific shape particles. However, the existing technology has the following technical problems to be solved urgently:
[0003] 1. Product quality defects: the existing granulation device generally has the problems of high impurity content of finished product and poor thermal stability. During production, powder is easy to mix into plastic particles, resulting in structural defects such as bubbles and pinholes in subsequent products (such as reduced strength and transparency of film products). At the same time, most of the equipment lack effective cooling system, and the particles are easy to stick and deform due to high temperature, resulting in a high rate of defective products of 20% to 30%, which seriously affects the consistency of products.
[0004] 2. Bottleneck of production efficiency: the traditional equipment is low in efficiency in the conveying and screening link: the transfer from cutting to vibrating screen is completed by manual or low-efficiency machinery, and the average cleaning of blocked pipeline is required 3 to 5 times per week; single screening equipment cannot completely separate powder impurities, and about 15% to 20% of materials need to be reprocessed. The above problems result in poor production continuity and increase the unit energy consumption by more than 30%.
[0005] 3. Safety hazards are prominent: the powder and particles that have not been removed form a high-concentration combustible dust environment, which is easy to cause explosion accident when encountering open flame. According to statistics, the annual direct loss caused by dust explosion in plastic processing industry is more than 200 million yuan, accompanied by personnel casualties and equipment damage risk, which needs to be improved in dust removal and explosion-proof design.
[0006] Therefore, it is necessary to improve the existing granulator particle cooling and screening equipment to solve the above problems. CONTENT OF THE UTILITY MODEL
[0007] The utility model aims at providing a kind of granulator particle cooling and screening equipment to solve the problems of product quality defects, low production efficiency and safety hazards in the production of existing granulator.
[0008] To achieve the above purpose, the utility model provides a kind of granulator particle cooling and screening equipment, which comprises a vibrating screening device for primary separation of particles, a blowing material air conveying device for conveying particles to the screening device, a centrifugal screening device for receiving particles separated by the vibrating screening device and performing secondary separation, and a cooling device connected with the vibrating screening device and / or centrifugal screening device for cooling during particle separation.
[0009] As a further improvement of the present application, the number of cooling devices is two, and the two cooling devices are connected with the vibrating screening device and the centrifugal screening device respectively.
[0010] As a further improvement of the present application, the cooling device comprises a refrigeration component, and a transfer component for transferring the cold air of the refrigeration component to the vibrating screening device and / or the centrifugal screening device.
[0011] As a further improvement of the present application, the vibrating screening device comprises a vibrating net, a first vibrating motor for driving the vibrating net to vibrate, and a collecting support box arranged below the vibrating net.
[0012] As a further improvement of the present application, the material blowing and conveying device comprises a material blowing fan and a particle buffer tank arranged above the vibrating screening device, the material blowing fan is used for blowing particles into the particle buffer tank, and the particle buffer tank is used for conveying the particles to the vibrating screening device.
[0013] As a further improvement of the present application, the particle buffer tank comprises a tank body and a discharging pipe connected with the tank body, and the diameter of the discharging pipe is smaller than the diameter of the tank body.
[0014] As a further improvement of the present application, the centrifugal screening device comprises a centrifugal barrel, a rotating motor for driving the centrifugal barrel to rotate, a vibrating separating component connected with the centrifugal barrel, and the cooling device is connected with the centrifugal barrel.
[0015] As a further improvement of the present application, the vibrating separating component comprises a vibrating box connected with the centrifugal barrel, a screening net arranged in the vibrating box, a second vibrating motor for driving the screening net to vibrate, an impurity discharging pipe connected with the vibrating box, and a particle discharging pipe for discharging the materials on the screening net.
[0016] As a further improvement of the present application, the centrifugal screening device further comprises a material suction pipe connected with the centrifugal barrel and the vibrating screening device, and a negative pressure component for generating negative pressure in the centrifugal barrel, and the material suction pipe is connected with the bottom of the centrifugal barrel.
[0017] The present application further provides a granulator, which comprises a particle production device and the granulator particle cooling and screening device.
[0018] The utility model discloses a granulator cooling and screening equipment and a granulator, which can effectively remove the residual powder on the surface and inside of the particles through twice screening, reduce the dust concentration in the production environment, ensure the health of the operators, and reduce the safety hazard of dust explosion. BRIEF DESCRIPTION OF DRAWINGS
[0019] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and serve to explain the principles of the application, and are not intended to limit the application. In the drawings:
[0020] Figure 1 Figure 1 is a structural schematic view of the granulator cooling and screening equipment of the utility model. DETAILED DESCRIPTION
[0021] The technical solutions of the utility model will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0022] In the description of the utility model, it should be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0023] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, the term "installation", "link", "connection" should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the intercommunication. For ordinary skilled in the art, the above-mentioned term in the utility model can be understood according to the specific meaning in the utility model. In addition, the technical features involved in the different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.
[0024] As Figure 1 The utility model discloses a granulator, including granule production equipment and granulator granule cooling screening equipment 100, the granule production equipment is used to produce granule, and granule is sent into granulator granule cooling screening equipment 100 to cool, dust removal and screen small size unqualified product after being cut.
[0025] The granulator granule cooling screening equipment 100 includes the vibration screening device 2 for the primary separation of granule, the material blowing air conveying device 1 for conveying the granule to the screening device, the centrifugal screening device 3 for receiving the granule separated by the vibration screening device 2 and performing secondary separation, and the cooling device 4.
[0026] The material blowing air conveying device 1 includes the material blowing fan 11, the granule buffer tank 13 arranged above the vibration screening device 2, and the material conveying pipeline 12 connected between the material blowing fan 11 and the granule buffer tank 13.
[0027] The granule produced by the granule production equipment is blown into the material conveying pipeline 12 by the material blowing fan and further falls into the granule buffer tank 13 to wait for discharge. In the embodiment, the granule is rolled into the material conveying pipeline 12 by the strong airflow generated by the material blowing fan. In the material conveying pipeline 12, the granule moves quickly as if being "lifted" by the airflow. This conveying mode is efficient and can avoid excessive collision between the granules to generate new debris. The granule is conveyed to the granule buffer tank 13 at a speed of several meters per second, realizing rapid transfer of the granule while ensuring that the integrity of the granule is not affected.
[0028] The material blowing fan 11 is arranged to realize preliminary cooling of the granule. The granule can also be cooled when passing through the slender material conveying pipeline 12 and can still be cooled before being discharged from the granule buffer tank 13.
[0029] The particle storage tank 13 comprises a tank body 131 and a discharge pipe 132 connected with the tank body 131, and the diameter of the discharge pipe 132 is smaller than that of the tank body 131. The tank body 131 with a larger diameter can improve the cooling effect, and the discharge pipe 132 with a smaller diameter can reduce the discharge speed, so as to avoid the accumulation of particles at the vibrating screening device 2 and affect the screening effect.
[0030] The vibrating screening device 2 comprises a vibrating screen 21, a first vibrating motor 22 for driving the vibrating screen 21 to vibrate, and a collection support box 23 arranged below the vibrating screen 21.
[0031] After the first vibrating motor 22 is started, the vibrating screen 21 is driven to vibrate at a high frequency, and the frequency is usually several hundred times to several thousand times per minute. Under the action of vibration, the particles continuously jump and roll on the vibrating screen 21, and the loose powder wrapped on the surface of the particles is separated from the particles due to vibration, and together with the unqualified products with a size too small, falls through the mesh holes of the screen to the collection support box 23, and then is uniformly taken out for processing. The aperture of the vibrating screen 21 is carefully designed, and the vibrating screen 21 with an aperture of 0.1-0.3 mm is selected, so as to ensure that only the powder passes through, and the qualified particles remain on the vibrating screen 21 to continue to enter the subsequent process, thereby ensuring the cleanliness of the surface of the particles.
[0032] The centrifugal screening device 3 comprises a centrifugal barrel 31, a rotating motor 32 for driving the centrifugal barrel 31 to rotate, a vibrating separation piece 33 connected with the centrifugal barrel 31, a suction pipe connected with the centrifugal barrel 31 and the vibrating screening device 2, and a negative pressure piece for generating negative pressure in the centrifugal barrel 31.
[0033] The suction pipe is connected with the bottom of the centrifugal barrel 31. The negative pressure generated by the negative pressure piece in the centrifugal barrel 31 can suck the particles separated by the vibrating screening device 2 into the centrifugal barrel 31. In the embodiment, the suction pipe rod is coaxially arranged with the centrifugal barrel 31.
[0034] The rotating motor 32 drives the centrifugal barrel 31 to rotate, so as to drive the particles in the centrifugal barrel 31 to rotate along the inner wall of the centrifugal barrel 31 and gradually move upward. The cooling device 4 is connected with the centrifugal barrel 31, and the cooling capacity generated by the cooling device 4 is concentrated in the centrifugal barrel 31, and the particles in the centrifugal barrel 31 have a relatively fast moving speed, so that the temperature of the particles can be rapidly reduced.
[0035] The vibration separating part 33 comprises a vibration box 331 connected with the centrifugal barrel 31, a screening mesh arranged in the vibration box 331, a second vibration motor 332 for driving the screening mesh to vibrate, an impurity discharging pipe 333 connected with the vibration box 331, and a particle discharging pipe 334 for discharging the material on the screening mesh. The working principle of the vibration separating part 33 is similar to that of the vibration screening device 2. The particles after sufficient cooling are separated from the centrifugal barrel 31 and enter the screening mesh. The second vibration motor 332 drives the screening mesh to vibrate. The separated impurities or particles that are too small or do not meet the requirements will enter the vibration box 331 and be discharged from the impurity discharging pipe 333, while the particles after cooling and separation will be discharged from the particle discharging pipe 334.
[0036] In this embodiment, the second vibration motor 332 is arranged adjacent to the rotating motor 32, and the vibration is transmitted to the screening mesh through a transmission part. In other embodiments, the second vibration motor 332 can be arranged closer to the screening mesh, and the vibration is directly transmitted to the screening mesh.
[0037] The cooling device 4 is connected with the vibration screening device 2 and / or the centrifugal screening device 3 to cool the particles during separation.
[0038] In this embodiment, the number of cooling devices 4 is two, and each cooling device 4 is connected with the vibration screening device 2 and the centrifugal screening device 3.
[0039] The cooling device 4 comprises a refrigeration part and a transfer part for transferring the cold air of the refrigeration part to the vibration screening device 2 and / or the centrifugal screening device 3. The transfer part can be a transfer fan 41 or a cold heat circulator 44, as long as it can transfer the heat of the refrigeration part.
[0040] In this embodiment, the cooling device 4 for cooling the vibration screening device 2 comprises a transfer fan 41 and a first refrigeration part 42. The first refrigeration part 42 is refrigerated, and the transfer fan 41 is used to blow cold air into the collection support box 23 and cool the particles on the vibration mesh 21.
[0041] The cooling device 4 for cooling the centrifugal screening device 3 comprises a second refrigeration part 43 and a cold heat circulator 44. The second refrigeration part 43 is refrigerated, and the cold heat circulator 44 transports the cold air after refrigeration to the inside of the centrifugal barrel 31 through a special refrigeration and air circulation system, and cools the particles in the centrifugal barrel 31.
[0042] The cold air is evenly blown on the surface of the granular material, and the heat generated by friction and the like of the granular material is rapidly taken away by forced convection heat exchange. After heat exchange with the granular material, the cold air becomes hot air with a higher temperature. The cold and hot cycle device is equipped with a dedicated exhaust passage and an air extraction device, and can timely extract and discharge the hot air from the discharge machine to the external environment. Through the continuous cold air delivery and hot air discharge process, the cold and hot cycle device can control the temperature of the granular material in the centrifugal barrel 31 within a suitable range. Generally, the temperature range is set according to different material characteristics and production process requirements, and the surface temperature of the granular material is usually controlled at about 5-10 DEG C lower than the ambient temperature. In this way, not only can the problems of adhesion and deformation of the granular material due to high temperature be effectively prevented, but also the shape and size of the granular material can be ensured to be regular and uniform, and the product quality can be further improved to meet the demand for producing high-quality products.
[0043] The granule cooling and screening equipment 100 for the granulator and the granulator can effectively remove the powder remaining on the surface and inside of the granules through twice screening, reduce the dust concentration in the production environment, ensure the health of the operators, and reduce the safety hazard of dust explosion; the cooling device 4 is arranged to cool the granules during screening, so that the granules are prevented from being adhered and deformed due to high temperature, and the appropriate temperature can ensure that the shape and size of the granules are regular and uniform, ensure the stability of product quality, and improve the qualified rate of products and market competitiveness. The granule cooling and screening equipment 100 for the granulator can realize automatic transfer of the granules, has high conveying speed and high conveying efficiency, reduces the waiting and transfer time of the materials, makes the production process more compact, and improves the output per unit time.
[0044] Any combination of the technical features of the above-described embodiments can be made, and to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combination of the technical features does not exist, it should be considered that it is within the scope of the description.
[0045] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which are within the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.
Claims
1. A pellet-cooling and screening apparatus for a pelletizer, characterized by: The granulator cooling and screening device comprises a vibrating screening device for primary separation of the particles, a blowing air conveying device for conveying the particles to the screening device, a centrifugal screening device for receiving the particles separated by the vibrating screening device and performing secondary separation, and a cooling device connected to the vibrating screening device and / or the centrifugal screening device for cooling the particles during separation.
2. A pellet-cooling and screening apparatus for a granulator according to claim 1, characterized in that: The cooling device comprises two cooling devices connected to the vibrating screening device and the centrifugal screening device respectively.
3. A pellet-cooling and screening apparatus for a granulator according to claim 1 or 2, characterized in that: The cooling device comprises a refrigeration unit and a transfer unit for transferring the cold air of the refrigeration unit to the vibrating screening device and / or the centrifugal screening device.
4. The pellet cooling and screening apparatus for a granulator according to claim 1, characterized by: The vibrating screening device comprises a vibrating screen, a first vibrating motor for driving the vibrating screen to vibrate, and a collection support box arranged below the vibrating screen.
5. The pellet cooling and screening apparatus for a granulator according to claim 1, characterized by: The blowing air conveying device comprises a blowing air fan and a particle buffer tank arranged above the vibrating screening device, wherein the blowing air fan is used to blow the particles into the particle buffer tank, and the particle buffer tank is used to send the particles to the vibrating screening device.
6. A pellet-cooling and screening apparatus for a granulator according to claim 5, characterized in that: The particle buffer tank comprises a tank body and a discharge pipe connected to the tank body, wherein the diameter of the discharge pipe is smaller than the diameter of the tank body.
7. The pellet cooling and screening apparatus for a granulator according to claim 1, characterized by: The centrifugal screening device comprises a centrifugal barrel, a rotating motor for driving the centrifugal barrel to rotate, a vibrating separation unit connected to the centrifugal barrel, and the cooling device connected to the centrifugal barrel.
8. A pellet-cooling and screening apparatus for a granulator according to claim 7, characterized in that: The vibrating separation unit comprises a vibrating box connected to the centrifugal barrel, a screening mesh arranged in the vibrating box, a second vibrating motor for driving the screening mesh to vibrate, a foreign matter discharge pipe connected to the vibrating box, and a particle discharge pipe for discharging the material on the screening mesh.
9. The pellet cooling and screening apparatus for a granulator according to claim 7, characterized in that: The centrifugal screening device further comprises a suction pipe connected to the centrifugal barrel and the vibrating screening device, and a negative pressure unit for generating negative pressure in the centrifugal barrel, wherein the suction pipe is connected to the bottom of the centrifugal barrel.
10. A granulator characterised in that: The granulator comprises a particle production device and the granulator cooling and screening device according to any one of claims 1-9.