Leak-proof closed grinding device

Abstract

The utility model provides a kind of leak-proof closed grinding device, including chassis, bearing seat, speed reducer, driving wheel, the both ends of the top surface of the chassis are fixedly connected with bearing seat, the edge of the top surface of the chassis is fixedly connected with speed reducer, the output end of the speed reducer is fixedly connected with driving wheel;The outer surface of the driving wheel is movably connected with several belts, the inner side of the belt is movably connected with grinding cylinder.The utility model has the advantages of: the sealing reliability of device is greatly improved.The recess with wavy cross section on flange seat end face increases the contact area of packing layer and flange seat, so that the packing layer composed of silicone sealant layer can be more firmly filled in the recess.The packing layer is located between two sealing rings, further filling the possible tiny gap, forming a multi-level sealing structure, greatly enhancing the anti-leakage ability of the device, ensuring that powder does not leak out during grinding, ensuring the safety and cleanliness of working environment.

Description

Technical Field

[0001] This utility model relates to the field of ball mill technology, and in particular to a leak-proof sealed grinding device. Background Technology

[0002] Grinding equipment is a key piece of equipment in many industries such as chemical, pharmaceutical, food, and metallurgy for the fine processing of materials. It uses mechanical force to crush and grind materials to reduce particle size and improve uniformity. In practical applications, many materials (such as fine chemicals, pigments, powder coatings, and pharmaceutical raw materials) are characterized by being easily airborne, toxic, harmful, or sensitive to humidity. Therefore, strict sealing is essential during the grinding process to prevent dust leakage that could cause environmental pollution, product loss, or occupational health risks. Currently, most common closed-loop grinding equipment uses flange connections to seal the grinding cylinder, for example, by bolting the end cap to the cylinder flange and using sealing rings at the contact surfaces. However, existing sealing structures still have the following shortcomings:

[0003] Insufficient sealing reliability: Most devices only use single O-rings or flat gaskets for sealing. After long-term operation or frequent disassembly and assembly, the seal is prone to failure due to wear, aging, or pressure fluctuations, allowing fine powder particles to escape from the sealing surface. The leak-proof capability for micro-powder materials is weak, especially when there are pressure changes or vibrations within the system, causing momentary gaps to easily appear at the sealing interface. Therefore, a leak-proof, closed grinding device is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a leak-proof sealed grinding device to solve the problems mentioned in the background art and overcome the shortcomings of the prior art.

[0006] To achieve the above objectives, one embodiment of the present invention provides a leak-proof sealed grinding device, including a base frame, bearing seats, a geared motor, and a drive wheel. Bearing seats are fixedly connected to both ends of the top surface of the base frame, a geared motor is fixedly connected to the edge of the top surface of the base frame, and a drive wheel is fixedly connected to the output end of the geared motor.

[0007] Several belts are movably connected to the outer surface of the drive wheel, and a grinding cylinder is movably connected to the inner side of the belts.

[0008] The grinding cylinder is hollow, and both ends of the grinding cylinder are fixedly connected to ports, which are inserted into the bearing seats;

[0009] A flange seat is fixedly connected to the end of the port, and a cover plate is detachably connected to the end face of the flange seat;

[0010] The flange seat and cover plate have holes at their edges and fasteners are inserted into the holes. The fasteners are threaded to the ends of their fasteners.

[0011] The flange seat has two sealing grooves, inner and outer, on its end face. A sealing ring is fixedly connected to the end face of the cover plate. The sealing ring is embedded in the corresponding sealing groove. A groove is formed on the end face of the flange seat. The groove has a wavy cross-section. A filler layer is filled between the flange seat and the cover plate. The filler layer fills the gaps in the groove.

[0012] Preferably, in any of the above solutions, the base frame is made of steel, and the bearing seat is fastened to the top surface of the base frame by bolts.

[0013] Preferably, in any of the above embodiments, the geared motor is installed horizontally, and the diameter of the drive wheel is smaller than the diameter of the grinding cylinder.

[0014] Preferably, in any of the above embodiments, the grinding cylinder is horizontally positioned and the grinding cylinder is made of stainless steel.

[0015] Preferably, in any of the above embodiments, the flange seat is welded to the port, and the cover plate is detachably connected to the flange seat by fasteners and fastening heads.

[0016] The base frame serves as the supporting foundation for the entire device, with a geared motor fixedly installed at its top edge. When the geared motor is started, its output drives the drive wheel to rotate. Several belts are movably connected to the outer surface of the drive wheel, and the inner sides of these belts are connected to the grinding cylinder. Through the transmission of these belts, the rotational power of the drive wheel is transmitted to the grinding cylinder, enabling it to rotate. The grinding cylinder is a hollow, horizontally positioned structure with ports fixed at both ends. These ports are inserted into bearing seats bolted to the top surface of the base frame, providing stable support for the rotation of the grinding cylinder. The grinding cylinder is made of stainless steel. During rotation, the grinding media and the material to be ground inside the cylinder collide and rub against each other, thus achieving the grinding of the material.

[0017] A flange seat is fixedly connected to the end of the grinding cylinder, and the flange seat and the port are welded together to ensure a firm connection. A cover plate is detachably connected to the end face of the flange seat. Specifically, holes are drilled at the edges of the flange seat and the cover plate, and fasteners are inserted and threaded to the ends of the fasteners to achieve a tight connection between the cover plate and the flange seat. The end face of the flange seat has two sealing grooves, inner and outer. A rubber sealing ring is fixedly connected to the end face of the cover plate, and the sealing ring is fixed to the cover plate by adhesive or riveting. The sealing ring is tightly embedded in the corresponding sealing groove, forming a double O-ring seal structure, effectively preventing powder leakage from the connection gap between the flange seat and the cover plate. A wavy groove is also formed on the end face of the flange seat. A filler layer composed of silicone sealant is filled between the flange seat and the cover plate, and the filler layer fills the gaps in the groove. At the same time, the filler layer is located between the two sealing rings, further enhancing the sealing effect and preventing powder leakage.

[0018] Preferably, in any of the above solutions, the sealing groove and the sealing ring are tightly fitted, the sealing ring is made of rubber, and the sealing ring is bonded or riveted to the cover plate.

[0019] The core design of this device employs two sealing rings, inner and outer, that fit tightly into corresponding sealing grooves, forming a double sealing barrier. The rubber sealing rings possess excellent elasticity and sealing properties, allowing them to conform closely to the sealing grooves and effectively prevent powder leakage through the connection between the flange seat and the cover plate, significantly improving the device's sealing reliability. The wavy groove on the flange seat end face increases the contact area between the filler layer and the flange seat, enabling the silicone sealant layer to more firmly fill the groove. Located between the two sealing rings, the filler layer further fills any potential micro-gaps, forming a multi-layered sealing structure that greatly enhances the device's leak-proof capability, ensuring that powder does not leak during grinding and guaranteeing a safe and clean working environment.

[0020] Preferably, in any of the above embodiments, the sealing ring is also designed with inner and outer rings, the sealing ring is specifically an O-ring, and the filler layer is located between the two sealing rings, the filler layer is specifically a silicone sealant layer.

[0021] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0022] This leak-proof, sealed grinding device utilizes a combination of flange connections, sealing grooves, sealing rings, recesses, and a filler layer. Two sealing rings, inner and outer, fit tightly against their corresponding sealing grooves, forming a double sealing barrier. The rubber sealing rings possess excellent elasticity and sealing properties, allowing them to fit snugly against the sealing grooves and effectively preventing powder leakage through the connection between the flange seat and the cover plate, significantly improving the device's sealing reliability. The wavy groove on the flange seat end face increases the contact area between the filler layer and the flange seat, enabling the silicone sealant layer to fill the grooves more firmly. The filler layer, located between the two sealing rings, further fills any potential micro-gaps, forming a multi-layered sealing structure that greatly enhances the device's leak-proof capability. Simultaneously, the sealing interface is less prone to failure, ensuring that powder does not leak during grinding and guaranteeing a safe and clean working environment.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure at the port of this utility model;

[0027] Figure 3 This is a schematic diagram of the flange seat of this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the cover plate of this utility model;

[0029] Figure 5 This is a partial cross-sectional view of the filler layer of this utility model.

[0030] In the diagram: 1-base frame, 2-bearing housing, 3-gear motor, 4-drive wheel, 5-belt, 6-grinding cylinder, 7-port, 8-flange seat, 9-cover plate, 10-fastener, 11-fastening head, 12-sealing groove, 13-sealing ring, 14-groove, 15-filling layer. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] like Figure 1-5 As shown, this leak-proof sealed grinding device includes a base frame 1, a bearing seat 2, a geared motor 3, and a drive wheel 4. The bearing seats 2 are fixedly connected to both ends of the top surface of the base frame 1, the geared motor 3 is fixedly connected to the edge of the top surface of the base frame 1, and the drive wheel 4 is fixedly connected to the output end of the geared motor 3.

[0034] Several belts 5 are movably connected to the outer surface of the drive wheel 4, and a grinding cylinder 6 is movably connected to the inner side of the belts 5.

[0035] The grinding cylinder 6 is hollow, and ports 7 are fixedly connected to both ends of the grinding cylinder 6. The ports 7 are inserted into the bearing seat 2.

[0036] A flange seat 8 is fixedly connected to the end of port 7, and a cover plate 9 is detachably connected to the end face of flange seat 8.

[0037] The flange seat 8 and the cover plate 9 have holes at their edges and fasteners 10 are inserted into the holes. The fasteners 10 are threaded to the ends of fasteners 10 with fastening heads 11.

[0038] The flange seat 8 has two sealing grooves 12, one inside and one outside. A sealing ring 13 is fixedly connected to the end face of the cover plate 9. The sealing ring 13 is embedded in the corresponding sealing groove 12. A groove 14 is provided on the end face of the flange seat 8. The groove 14 has a wavy cross section. A filler layer 15 is filled between the flange seat 8 and the cover plate 9. The filler layer 15 fills the gap of the groove 14.

[0039] Example 1: The base frame 1 is made of steel, and the bearing housing 2 is fastened to the top surface of the base frame 1 with bolts. The geared motor 3 is horizontally mounted, and the diameter of the drive wheel 4 is smaller than the diameter of the grinding cylinder 6. The grinding cylinder 6 is horizontally placed and is made of stainless steel. The flange seat 8 is welded to the port 7, and the cover plate 9 is detachably connected to the flange seat 8 by fasteners 10 and fastening heads 11. The sealing groove 12 fits tightly with the sealing ring 13, which is made of rubber. The sealing ring 13 is bonded or riveted to the cover plate 9. The sealing ring 13 is also designed with inner and outer rings. Specifically, the sealing ring 13 is an O-ring. The filler layer 15 is located between the two sealing rings 13 and is specifically a silicone sealant layer.

[0040] Example 2: The base frame 1 serves as the supporting foundation for the entire device, with a geared motor 3 fixedly installed at its top edge. After starting the geared motor 3, its output drives the drive wheel 4 to rotate. Several belts 5 are movably connected to the outer surface of the drive wheel 4, and the inner side of each belt 5 is connected to the grinding cylinder 6. Through the transmission action of the belts 5, the rotational power of the drive wheel 4 is transmitted to the grinding cylinder 6, allowing it to rotate. The grinding cylinder 6 is a hollow, horizontally positioned structure with ports 7 fixedly connected to both ends. These ports 7 are inserted into bearing seats 2, which are bolted to the top surface of the base frame 1. The bearing seats 2 provide stable support for the rotation of the grinding cylinder 6. The grinding cylinder 6 is made of stainless steel. During rotation, the grinding media and the material to be ground inside the cylinder collide and rub against each other, thus achieving grinding of the material.

[0041] A flange seat 8 is fixedly connected to the end of port 7 of the grinding cylinder 6. The flange seat 8 and port 7 are welded together to ensure a firm connection. A cover plate 9 is detachably connected to the end face of the flange seat 8. Specifically, fasteners 10 are inserted into holes at the edges of the flange seat 8 and the cover plate 9, and the end of the fastener 10 is threaded to a fastening head 11, achieving a tight connection between the cover plate 9 and the flange seat 8. Two sealing grooves 12 are formed on the end face of the flange seat 8, and a rubber sealing ring 13 is fixedly connected to the end face of the cover plate 9. The sealing ring 13 is fixed to the cover plate 9 by adhesive or riveting. The sealing ring 13 is tightly embedded in the corresponding sealing groove 12, forming a double O-ring seal structure, effectively preventing powder leakage from the connection gap between the flange seat 8 and the cover plate 9. A wavy groove 14 is also formed on the end face of the flange seat 8. A filler layer 15 composed of silicone sealant is filled between the flange seat 8 and the cover plate 9, and the filler layer 15 fills the gap of the groove 14. Meanwhile, the filler layer 15 is located between the two sealing rings 13, which further enhances the sealing effect and prevents powder leakage.

[0042] The working principle of this utility model is as follows: The steel frame 1 is placed stably on a pre-prepared work site, ensuring the ground is flat and firm to guarantee the stability of the frame 1. A level is used to calibrate the frame 1, ensuring it is horizontal. The bearing seats 2 are bolted to the designated positions at both ends of the top surface of the frame 1, ensuring the bolt tightening torque meets design requirements and that the bearing seats 2 are firmly connected to the frame 1. The geared motor 3 is horizontally installed at the edge of the top surface of the frame 1, and secured using specialized installation tools and bolts, ensuring the geared motor 3 is installed stably without shaking. The drive pulley 4 is installed at the output end of the geared motor 3, using a key connection or other suitable connection method to ensure a tight connection between the drive pulley 4 and the output end of the geared motor 3, enabling synchronous rotation. The quantity and specifications of the belts 5 are checked to ensure they are free from cracks, wear, or other defects. The belts 5 are sequentially looped onto the drive pulley 4 and the grinding cylinder 6, adjusting the belt tension to a suitable state to ensure transmission efficiency. The appearance of the grinding cylinder 6 is inspected to ensure it is free from deformation, cracks, or other damage. Insert the ports 7 at both ends of the grinding cylinder 6 into the bearing housing 2 respectively, ensuring that the fit clearance between the ports 7 and the bearing housing 2 meets the design requirements, so that the grinding cylinder 6 can rotate flexibly.

[0043] Inspect the welding quality of flange seat 8 and port 7 to ensure that there are no defects such as porosity or slag inclusions at the weld, and that the weld is firm and reliable. Check whether the size and shape of cover plate 9 match flange seat 8, and ensure that cover plate 9 can completely cover the end face of flange seat 8.

[0044] Prepare a rubber sealing ring 13. Check that the size and shape of the sealing ring 13 match the sealing groove 12 on the flange seat 8, ensuring that the sealing ring 13 is free from damage or deformation. Fix the sealing ring 13 to the end face of the cover plate 9 by bonding or riveting, paying attention to the quality of bonding or riveting to ensure that the sealing ring 13 is firmly connected to the cover plate 9. Prepare silicone sealant as the material for the filler layer 15, ensuring that the quality of the silicone sealant meets the requirements and is not expired or deteriorated.

[0045] Open the cover plate 9. Since the cover plate 9 is detachably connected to the flange seat 8 via fasteners 10 and fastening heads 11, use a suitable tool to loosen the fastening head 11 and remove the fasteners 10 to remove the cover plate 9 from the flange seat 8. Slowly pour the powder material to be ground into the grinding cylinder 6 through the port 7 at one end of the grinding cylinder 6, being careful to control the amount of material added to avoid affecting the grinding effect and the normal operation of the device. After loading, reinstall the cover plate 9 onto the flange seat 8. Align the sealing ring 13 with the sealing groove 12 on the flange seat 8, and slowly lower the cover plate 9 so that the sealing ring 13 is embedded in the sealing groove 12. Then insert the fasteners 10 in sequence and use a tool to tighten the fastening heads 11 to ensure a tight connection between the cover plate 9 and the flange seat 8. Fill the groove 14 between the flange seat 8 and the cover plate 9 with silicone sealant as a filler layer 15. Using a specialized filling tool, silicone sealant is evenly filled into the groove 14, ensuring that the filler layer 15 completely fills the gaps in the groove 14 and is positioned between the two sealing rings 13, forming a multi-layered sealing structure. The power supply to the geared motor 3 is then switched on, and the geared motor 3 begins to operate, its output driving the drive wheel 4 to rotate. Due to the transmission effect of the belt 5, the rotational power of the drive wheel 4 is transmitted to the grinding cylinder 6, causing the grinding cylinder 6 to begin rotating. During the rotation of the grinding cylinder 6, the stainless steel grinding media inside the cylinder collides and rubs against the powder raw material, grinding the powder raw material. Because the grinding cylinder 6 is horizontally positioned, the powder raw material can be evenly distributed inside the cylinder, which is beneficial for improving grinding efficiency and grinding quality.

[0046] During the grinding process, the double O-ring seal 13 plays an important sealing role. The rubber seal 13 has good elasticity and sealing performance, and can fit tightly into the sealing groove 12, effectively preventing the powder raw material from leaking through the connection gap between the flange seat 8 and the cover plate 9.

[0047] Meanwhile, the wavy groove 14 increases the contact area between the filler layer 15 and the flange seat 8. The filler layer 15, which is composed of silicone sealant, is firmly filled in the groove 14, further filling any possible tiny gaps. Together with the double O-ring seal 13, it forms a multi-layered sealing barrier. At the same time, the sealing interface is not prone to failure, ensuring that the powder raw materials will not leak out during the grinding process, thus ensuring the safety and cleanliness of the working environment.

[0048] Compared with the prior art, the present invention has the following advantages:

[0049] This leak-proof, sealed grinding device utilizes a flange connection, sealing groove 12, sealing ring 13, groove 14, and filler layer 15. Two sealing rings 13, one inner and one outer, fit tightly against the corresponding sealing groove 12, forming a double sealing barrier. The rubber sealing ring 13 possesses excellent elasticity and sealing properties, allowing it to fit snugly against the sealing groove 12, effectively preventing powder leakage through the connection between the flange seat 8 and the cover plate 9, significantly improving the device's sealing reliability. The wavy groove 14 on the end face of the flange seat 8 increases the contact area between the filler layer 15 and the flange seat 8, enabling the silicone sealant layer 15 to fill the groove 14 more firmly. The filler layer 15, located between the two sealing rings 13, further fills any potential micro-gaps, forming a multi-layered sealing structure that greatly enhances the device's leak-proof capability, ensuring that powder does not leak during grinding and guaranteeing a safe and clean working environment.

Claims

1. A leak-proof, sealed grinding device, characterized in that, It includes a base frame, bearing seats, a geared motor, and a drive wheel. Bearing seats are fixedly connected to both ends of the top surface of the base frame, a geared motor is fixedly connected to the edge of the top surface of the base frame, and a drive wheel is fixedly connected to the output end of the geared motor. Several belts are movably connected to the outer surface of the drive wheel, and a grinding cylinder is movably connected to the inner side of the belts. The grinding cylinder is hollow, and both ends of the grinding cylinder are fixedly connected to ports, which are inserted into the bearing seats; A flange seat is fixedly connected to the end of the port, and a cover plate is detachably connected to the end face of the flange seat; The flange seat and cover plate have holes at their edges and fasteners are inserted into the holes. The fasteners are threaded to the ends of their fasteners. The flange seat has two sealing grooves, inner and outer, on its end face. A sealing ring is fixedly connected to the end face of the cover plate. The sealing ring is embedded in the corresponding sealing groove. A groove is formed on the end face of the flange seat. The groove has a wavy cross-section. A filler layer is filled between the flange seat and the cover plate. The filler layer fills the gaps in the groove.

2. The leak-proof sealed grinding device as described in claim 1, characterized in that: The base frame is made of steel, and the bearing seat is fastened to the top surface of the base frame with bolts.

3. The leak-proof sealed grinding device as described in claim 2, characterized in that: The geared motor is mounted horizontally, and the diameter of the drive wheel is smaller than the diameter of the grinding cylinder.

4. The leak-proof sealed grinding device as described in claim 3, characterized in that: The grinding cylinder is horizontally positioned and is made of stainless steel.

5. The leak-proof sealed grinding device as described in claim 4, characterized in that: The flange seat is welded to the port, and the cover plate is detachably connected to the flange seat by fasteners and fastening heads.

6. The leak-proof sealed grinding device as described in claim 5, characterized in that: The sealing groove fits tightly with the sealing ring, which is made of rubber. The sealing ring is bonded or riveted to the cover plate.

7. The leak-proof sealed grinding device as described in claim 6, characterized in that: The sealing ring is also designed with two layers, an inner and an outer layer. The sealing ring is specifically an O-ring. The filler layer is located between the two sealing rings and is specifically a silicone sealant layer.

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