Wet mill outlet spiral sleeve sealing device

Abstract

The invention discloses a wet mill outlet spiral sleeve sealing device in the technical field of wet mills, which comprises a spiral sleeve, a trunnion and a large tile assembly, the trunnion is sleeved with the spiral sleeve, a flange is welded on the spiral sleeve, and one end of the trunnion is in bolted connection with the flange. The sealing cavity is formed between the spiral sleeve and the trunnion, meanwhile, the bonding sealing assembly is connected to the outer wall of the spiral sleeve in an attached mode, the sealing cavity is tightly filled through the bonding sealing assembly, the space between the spiral sleeve and the trunnion is sealed, and fluid leakage is avoided; the spiral sleeve and the trunnion are tightly bonded through the bonding sealing assembly, then the spiral sleeve and the trunnion form a whole, sealing and stable synchronous rotation are guaranteed, liquid leakage between the spiral sleeve and the trunnion can be effectively avoided, meanwhile, the spiral sleeve and the trunnion are installed on the same axis through the multiple sets of inner hexagonal countersunk bolts, and the spiral sleeve and the trunnion are coaxial when rotating together. And the stress is uniform.

Description

Technical Field

[0001] The invention relates to the technical field of wet grinders, in particular to a spiral sleeve sealing device at an outlet of a wet grinder. Background Art

[0002] Limestone-gypsum wet desulfurization is the mainstream process of coal-fired power plants at present, relying on limestone slurry as raw material to absorb SO2 in flue gas. There are two preparation processes for limestone slurry: one is to grind it into powder by dry mill and mix it with process water to make limestone slurry; the other is to directly make limestone slurry by wet ball mill with grinding water; among them, wet ball mill slurry process is the mainstream process.

[0003] Taking the wet ball mill as an example, the outlet spiral sleeve is fixed to the ear shaft by bolts. Due to its characteristics, the bolts connecting the outlet spiral sleeve and the ear shaft are easy to break, which causes leakage. The reasons for the bolt breakage include the ovality of the tube winding process that cannot meet the standard, the spiral sleeve and the ear shaft are not concentric when rotating together, and the local large torque causes the bolt to break; when tons of steel balls are smashed down from the conical cylinder on the outlet side, a large impact force is generated, which is transmitted to the spiral sleeve flange connection, causing the spiral sleeve bolts to break or the flange weld to crack. The wet ball mill outlet spiral sleeve bolts are easy to break and the flange weld to crack, causing leakage, which can easily cause overall damage to the equipment. Summary of the invention

[0004] The purpose of the present invention is to provide a wet mill outlet spiral sleeve sealing device to solve the above-mentioned problem that the wet ball mill outlet spiral sleeve bolts are easily broken and the flange welds are cracked, causing leakage, which easily causes damage to the entire equipment.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A wet grinder outlet spiral sleeve sealing device comprises a spiral sleeve, an ear shaft and a large bearing assembly, the ear shaft sleeve is installed with a spiral sleeve, a flange is welded on the spiral sleeve, one end of the ear shaft is bolted to the flange, the large bearing assembly is installed on the outer wall of the ear shaft, the large bearing assembly is used to supply lubricating oil, a spiral plate is welded on the inner wall of the spiral sleeve, a plurality of groups of countersunk threaded holes are arranged through the spiral sleeve, the internal threads of the countersunk threaded holes are connected to hexagonal countersunk bolts, one end of the hexagonal countersunk bolts abuts against the inner wall of the ear shaft, a flange ring is welded on the outer wall of the spiral sleeve, a plurality of groups of sealing rings are embedded and connected on the flange ring, a raised ring matching the flange ring is arranged in the ear shaft, the sealing ring is fitted and connected to the inner wall of the raised ring, a sealing cavity is formed between the spiral sleeve and the ear shaft, the sealing cavity is tightly filled with an adhesive sealing assembly, the adhesive sealing assembly is used to bond and seal the spiral sleeve and the ear shaft to avoid leakage at the connection between the spiral sleeve and the ear shaft.

[0007] As a further solution of the present invention: the adhesive sealing assembly includes high water-based packing and resin, the high water-based packing is coated on the outer wall of the spiral sleeve, and the resin is tightly filled in the sealing cavity. The high water-based packing and resin are used to bond and seal the spiral sleeve and the ear shaft to avoid leakage at the connection between the spiral sleeve and the ear shaft.

[0008] As a further solution of the present invention: one end of the spiral sleeve relative to the sealing cavity is embedded with a high-water-base packing ring body, the inner wall of the ear shaft is welded with a packing gland, the packing gland is in contact with the connected packing gland, one end of the spiral sleeve is sleeved in the packing gland, the high-water-base packing ring body is used to seal the spiral sleeve, and the packing gland is used to limit the high-water-base packing ring body.

[0009] As a further solution of the present invention: it also includes a resin adding device, the liquid outlet end of the resin adding device is threadedly connected to the countersunk threaded hole of the spiral sleeve, and the resin adding device pressurizes and adds resin through the countersunk threaded hole to fill it into the sealing cavity to form an adhesive sealing component.

[0010] As a further solution of the present invention: the resin adding device includes a storage box, a resin pump, a delivery pipe and a resin nozzle, the storage box is provided with an opening, a resin pump is fixedly installed on one side of the storage box, the resin pump is connected to a ball valve, the ball valve is connected to the delivery pipe through a clamp, the delivery pipe is connected to the resin nozzle, the resin pump pressurizes the resin and exports it through the resin nozzle, the resin nozzle is threadedly connected to the countersunk threaded hole to pressurize and add resin to fill it into the sealed cavity, high water-based packing is arranged at intervals near the flange end to form an annular groove, and the annular groove facilitates the annular distribution of the resin.

[0011] As a further solution of the present invention: a plurality of sets of universal wheels are connected to the bottom of the storage box for easy movement, a filter is installed inside the storage box, the filter is used to filter the resin flowing into the inlet of the resin pump, a glass level gauge is installed on one side of the storage box, the glass level gauge is used to display the resin level, and a handle is welded on one side of the storage box.

[0012] As a further solution of the present invention: a baffle is fixedly connected to one end of the ear shaft, the baffle is funnel-shaped, and the large-diameter end of the baffle faces the flange side.

[0013] As a further solution of the present invention: the large bearing assembly includes an upper shell and a lower shell, the upper shell and the lower shell are bolted together to form a lubrication chamber, an oil pipe is welded to the upper end of the upper shell, the liquid outlet end of the oil pipe is connected to a plurality of groups of transversely arranged oil pipe nozzles, the oil pipe nozzles are used to spray lubricating oil, contact sealing assemblies are connected to both sides of the upper shell and the lower shell, the contact sealing assemblies are contact-connected to the outer wall of the ear shaft, and the contact sealing assemblies are used for contact sealing of the outer wall of the ear shaft.

[0014] As a further solution of the present invention: the contact sealing assembly includes a pressure plate and a felt, the pressure plate is bolted to the felt, the pressure plate is bolted to the upper shell and the lower shell, the felt is contact-connected to the outer wall of the ear shaft, and the felt is used for contact sealing of the outer wall of the ear shaft.

[0015] As a further solution of the present invention: a glass window is connected to one side of the upper end of the upper shell, and the glass window is used to observe the lubrication status of the ear shaft. Annular round steel is welded on the bolts on the ear shaft and the flange.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, a sealing cavity is formed between the spiral sleeve and the ear shaft, and an adhesive sealing component is attached to the outer wall of the spiral sleeve. The sealing cavity is tightly filled by the adhesive sealing component, and the spiral sleeve and the ear shaft are sealed to avoid fluid leakage. After the sealing cavity is tightly filled with the adhesive sealing component, the adhesive sealing component tightly bonds the spiral sleeve and the ear shaft, so that the spiral sleeve and the ear shaft form a whole, ensuring sealing and stable synchronous rotation, which can effectively avoid leakage between the spiral sleeve and the ear shaft. At the same time, multiple groups of hexagon socket countersunk bolts allow the spiral sleeve and the ear shaft to be installed on the same axis. When the spiral sleeve and the ear shaft rotate together, they are coaxial and evenly stressed, which avoids fluid leakage caused by breakage, and has a good use effect.

[0018] 2. In the present invention, when a plurality of high water-based packings are wrapped around the outside of the spiral sleeve, the high water-based packings are arranged at intervals near the flange end to form an annular groove. When filling the resin, the resin is distributed in an annular manner. The resin filled in the annular groove is easy to flow evenly on both sides to be evenly filled in the sealing cavity, thereby ensuring uniform filling of the resin. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall cross-sectional structure of the present invention;

[0020] Figure 2 It is a side view structural schematic diagram of the present invention;

[0021] Figure 3 For the present invention Figure 1 The enlarged structural diagram at A in the middle;

[0022] Figure 4 For the present invention Figure 1 The enlarged structural diagram at B in the middle;

[0023] Figure 5 For the present invention Figure 1 The enlarged structural diagram at C in the middle;

[0024] Figure 6 For the present invention Figure 1 The enlarged structural diagram at D in the middle;

[0025] Figure 7 This is a schematic diagram of the structure of the resin adding device of the present invention;

[0026] Figure 8 It is a schematic diagram of the installation operation of the present invention.

[0027] In the figure: 1, spiral sleeve; 2, flange; 3, spiral plate; 4, ear shaft; 5, flange ring; 6, raised ring; 7, sealing ring; 8, hexagon socket countersunk bolt; 9, bonding seal assembly; 901, high water-based packing; 902, resin; 10, large tile assembly; 101, upper shell; 102, lower shell; 103, oil pipe; 104, oil pipe nozzle; 105, glass window; 11, contact seal assembly; 111, pressure plate; 112, felt ; 12. High water-based packing ring; 13. Packing gland; 131. Reinforcement rib; 14. Baffle; 15. Annular round steel; 16. Resin adding device; 1601. Storage box; 1602. Resin pump; 1603. Ball valve; 1604. Clamp; 1605. Delivery pipe; 1606. Resin nozzle; 1607. Filter; 1608. Universal wheel; 1609. Handle; 1610. Glass level gauge; 17. Oil-blocking shoulder. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Example:

[0030] See also Figure 1-Figure 7, a wet grinding machine outlet spiral sleeve sealing device, comprising a spiral sleeve 1, an ear shaft 4 and a large tile assembly 10, the ear shaft 4 is sleeved and installed with the spiral sleeve 1, a flange 2 is welded on the spiral sleeve 1, one end of the ear shaft 4 is bolted to the flange 2, the large tile assembly 10 is installed on the outer wall of the ear shaft 4, the large tile assembly 10 is used to supply lubricating oil, a spiral plate 3 is welded on the inner wall of the spiral sleeve 1, a plurality of groups of countersunk threaded holes are arranged through the spiral sleeve 1, the inner threads of the countersunk threaded holes are connected to the inner hexagonal countersunk bolts 8, one end of the hexagonal countersunk bolts abuts against the inner wall of the ear shaft 4, a flange ring 5 is welded on the outer wall of the spiral sleeve 1, a plurality of groups of sealing rings 7 are embedded and connected on the flange ring 5, a raised ring 6 matching the flange ring 5 is arranged in the ear shaft 4, the sealing ring 7 is fitted and connected to the inner wall of the raised ring 6, a sealed cavity is formed between the spiral sleeve 1 and the ear shaft 4, and the sealed cavity is tightly filled with an adhesive sealing assembly 9, the adhesive sealing assembly 9 is used to bond and seal the spiral sleeve 1 and the ear shaft 4 to avoid leakage at the connection between the spiral sleeve 1 and the ear shaft 4.

[0031] Among them, the spiral sleeve 1 is made of carbon steel + integral rubber lining, 2205 bidirectional stainless steel or carbon steel with wear-resistant steel added inside, based on the comprehensive consideration of the limestone characteristics of each unit, the chloride ion concentration of grinding water and return water, so that the spiral sleeve 1 has better wear resistance and extends its service life. The spiral plate 3 inside the spiral sleeve 1 is used to convey materials.

[0032] A threaded sleeve is sleeved and installed on the ear shaft 4, and a flange 2 is welded on the threaded sleeve. The flange 2 is connected to the end of the ear shaft 4 through 16 M42, 10.9 grade high-strength bolts. The flange 2 at one end of the ear shaft 4 fixes the ear shaft 4 and the threaded sleeve. A spiral plate 3 is connected inside the threaded sleeve. The spiral plate 3 is used for spiral conveying of materials. The outer wall of the ear shaft 4 is connected to the large bearing assembly 10. The large bearing assembly 10 supports the ear shaft 4 installed inside. At the same time, the large bearing assembly 10 supplies lubricating oil. When the ear shaft 4 rotates, rotational lubrication is performed. The threaded sleeve is sleeved on the ear shaft 4. When screwed in, multiple groups of countersunk threaded holes inside the threaded sleeve are threadedly installed with matching hexagon socket countersunk bolts 8, and one end of the hexagon socket countersunk bolts 8 is against the inner wall of the ear shaft 4. Specifically, the spiral sleeve 1 is provided with three groups from left to right, and each group has four hexagon socket countersunk bolts 8 evenly distributed around the circumference, which are used to tighten the spiral sleeve 1 and the inner hole of the ear shaft 4. The four equidistant annularly distributed hexagon socket countersunk bolts 8 provide stable support points, allowing the spiral sleeve 1 and the ear shaft 4 to be installed on the same axis. When the spiral sleeve 1 and the ear shaft 4 rotate together, they are coaxial and evenly stressed, avoiding local stress concentration and resulting in breakage.

[0033] The outer wall of the spiral sleeve 1 is welded with a flange ring 5, which contacts the raised ring 6 in the ear shaft 4. Multiple sets of sealing rings 7 are embedded in the flange ring 5, and multiple contact sealing is performed through the sealing rings 7, so the sealing effect is good.

[0034] In the present invention, a sealed cavity is formed between the spiral sleeve 1 and the ear shaft 4, and an adhesive sealing component 9 is fitted and connected to the outer wall of the spiral sleeve 1. The sealed cavity is tightly filled by the adhesive sealing component 9, and the spiral sleeve 1 and the ear shaft 4 are sealed to avoid fluid leakage. After the sealing cavity is tightly filled with the adhesive sealing component 9, the adhesive sealing component 9 tightly bonds the spiral sleeve 1 and the ear shaft 4, so that the spiral sleeve 1 and the ear shaft 4 form a whole, ensuring sealing and stable synchronous rotation, which can effectively avoid leakage between the spiral sleeve 1 and the ear shaft 4. At the same time, multiple groups of hexagon socket countersunk bolts 8 allow the spiral sleeve 1 and the ear shaft 4 to be installed on the same axis. When the spiral sleeve 1 and the ear shaft 4 rotate together, they are coaxial and evenly stressed, which avoids fluid leakage caused by breakage, and has a good use effect.

[0035] The device solves the problem of leakage caused by broken spiral sleeve bolts and welds at the wet ball mill outlet during the operation of the coal-fired power plant, and can completely prevent the large-tile components of the wet ball mill from overheating and wearing due to the entry of slurry. At the same time, it avoids the environmental pollution caused by excessive oil quality in the large-tile components and overflow of slurry on site, and avoids the risk of a large amount of unqualified electricity or environmental emission exceeding the unit during the period when the wet ball mill is out of service, saving a lot of expenses for the coal-fired power plant.

[0036] In this embodiment, Figure 3 and Figure 4 As shown, the bonding sealing assembly 9 includes a high water-based packing 901 and a resin 902. The high water-based packing 901 is coated on the outer wall of the spiral sleeve 1, and the resin 902 is tightly filled in the sealing cavity. The high water-based packing 901 and the resin 902 are used to bond and seal the spiral sleeve 1 and the ear shaft 4 to avoid leakage at the connection between the spiral sleeve 1 and the ear shaft 4.

[0037] Among them, high water-based packing 901 is made of high-quality ramie fiber, coated with graphite inside and outside, and fully impregnated with special lubricating oil and woven in a square shape. The outstanding advantages of high water-based packing 901 are extremely low friction coefficient, no shaft grinding, corrosion resistance, and good sealing effect.

[0038] The sealing cavity is filled with high water-based packing 901 and resin 902, and the high water-based packing 901 is used for sealing, and the resin 902 is filled in the sealing cavity, so that the resin 902 fills the gap between the high water-based packing 901 and the sealing cavity to improve the sealing effect. At the same time, after the resin 902 is cured, the spiral sleeve 1, the ear shaft 4 and the high water-based packing 901 are integrally cured and bonded with the resin 902 to bond and seal the spiral sleeve 1 and the ear shaft 4 to avoid leakage at the connection between the spiral sleeve 1 and the ear shaft 4.

[0039] In this embodiment, Figure 3As shown, one end of the spiral sleeve 1 relative to the sealing cavity is embedded and connected with a high water base packing 901 ring body, the inner wall of the ear shaft 4 is welded with a packing gland 13, the packing gland 13 is in contact with the connected packing gland 13, one end of the spiral sleeve 1 is sleeved in the packing gland 13, the high water base packing 901 ring body is used for sealing the spiral sleeve 1, and the packing gland 13 is used to limit the high water base packing 901 ring body.

[0040] A high water base packing 901 ring body is embedded and connected to one end of the spiral sleeve 1 relative to the sealing cavity, and the packing gland 13 welded on the ear shaft 4 limits the high water base packing 901 ring body, allowing the high water base packing 901 ring body to seal the spiral sleeve 1 and the ear shaft 4 again, with a good sealing effect.

[0041] Further, such as Figure 3 As shown, a plurality of reinforcing ribs 131 are welded on the packing gland 13, and the other end of the reinforcing rib 131 is welded to the inner wall of the ear shaft 4. The plurality of reinforcing ribs 131 increase the stress-bearing performance of the packing gland 13, and the overall strength of the packing gland 13 is high, thereby extending the service life.

[0042] Furthermore, when the resin 902 is filled in the sealing cavity at high pressure, when the resin 902 overflows at one end of the spiral sleeve 1, the overflowed amount is blocked by the ring body of the high water-based packing 901 to prevent the resin 902 from overflowing.

[0043] In this embodiment, Figure 7 As shown, it also includes a resin 902 adding device, the liquid outlet end of the resin 902 adding device is threadedly connected to the countersunk threaded hole of the spiral sleeve 1, and the resin 902 adding device pressurizes and adds resin 902 through the countersunk threaded hole to fill it into the sealing cavity to form an adhesive sealing component 9.

[0044] The resin 902 is pressurized by the resin 902 adding device, and the multiple countersunk threaded holes on the spiral sleeve 1 are connected to the sealing cavity. The pressurized resin 902 is introduced into the sealing cavity through one of the countersunk threaded holes connected to the resin 902 adding device, so that the resin 902 is tightly filled in the gap to form an adhesive sealing component 9.

[0045] In this embodiment, Figure 7As shown, the resin 902 adding device includes a storage box 1601, a resin 902 pump, a delivery pipe 1605 and a resin 902 nozzle. An opening is set on the storage box 1601, and the resin 902 pump is fixedly installed on one side of the storage box 1601. The resin 902 pump is connected to the ball valve 1603, the ball valve 1603 is connected to the delivery pipe 1605 through the clamp 1604, and the delivery pipe 1605 is connected to the resin 902 nozzle. The resin 902 pump pressurizes the resin 902 and outputs it through the resin 902 nozzle. The resin 902 nozzle is threadedly connected to the countersunk threaded hole to pressurize and add resin 902 to fill it into the sealed cavity. High water-based packing 901 is arranged at intervals near the two ends of the flange to form an annular groove, and the annular groove facilitates the annular distribution of the resin 902.

[0046] A sealing cover is connected to the upper opening of the storage box 1601. Resin 902 can be added after the sealing cover is opened. After the addition of resin 902 is completed, the opening of the storage box 1601 is sealed by the sealing cover to prevent debris from entering. A resin 902 pump is arranged in the storage box 1601. The resin 902 pump is driven by an external motor. A ball valve 1603 is arranged at the outlet of the resin 902 pump. The ball valve 1603 is arranged on the outside of the storage box 1601 to facilitate the manual switch to cut off the remaining resin 902 in the delivery pipe 1605. The delivery pipe 1605 is a rubber-steel braided hose. The rubber-steel braided hose can withstand high-pressure fluid and is convenient for the delivery of resin 902. The resin 902 nozzle is threadedly connected to the countersunk threaded hole to ensure a sealed connection at the connection, avoid leakage of resin 902 during delivery, and ensure stable delivery of resin 902. The ball valve 1603 is connected to the delivery pipe 1605 through the clamp 1604. The ball valve 1603 and the delivery pipe 1605 are easy to assemble and disassemble, which is convenient for the subsequent operation of injecting resin 902.

[0047] Furthermore, when multiple high water-based packings 901 are wrapped around the outside of the spiral sleeve 1, the high water-based packings 901 are arranged at intervals near the flange 2 ends to form an annular groove. When filling the resin 902, the resin 902 is distributed in an annular manner. The resin 902 filled in the annular groove is easy to flow evenly on both sides so as to be evenly filled in the sealing cavity, thereby ensuring the uniform filling of the resin 902.

[0048] The resin 902 is an epoxy resin 902. After being cured, the epoxy resin 902 has a super high bonding ability to metals and is called "universal glue". After being cured, the spiral sleeve 1 and the inner hole of the ear shaft 4 are bonded into a whole.

[0049] In this embodiment, Figure 7As shown, the bottom of the storage box 1601 is connected to multiple sets of universal wheels 1608 for easy movement, a filter is installed inside the storage box 1601, the filter is used to filter the resin 902 flowing into the inlet of the resin 902 pump, a glass level gauge 1610 is installed on one side of the storage box 1601, the glass level gauge 1610 is used to display the liquid level of the resin 902, and a handle 1609 is welded on one side of the storage box 1601.

[0050] Multiple sets of universal wheels 1608 connected to the bottom of the storage box 1601 cooperate with the handle 1609 to facilitate the overall movement of the device. A filter is installed inside the storage box 1601 to filter the resin 902 flowing into the inlet of the resin 902 pump to avoid impurities in the discharged resin 902. The glass level gauge 1610 on one side of the storage box 1601 is used to display the liquid level of the resin 902 and add the resin 902 in time.

[0051] In this embodiment, Figure 1 and Figure 6 As shown, one end of the ear shaft 4 is fixedly connected to a baffle 14 , the baffle 14 is funnel-shaped, and the large-diameter end of the baffle 14 faces the flange 2 .

[0052] A baffle 14 is fixedly connected to the ear shaft 4. When an accidental leakage occurs in the device, the baffle 14 can guide the leaked fluid through the funnel-shaped baffle 14 to prevent the fluid from flowing into the large tile assembly 10 and causing damage to the large tile assembly 10.

[0053] In this embodiment, Figure 2 As shown, the large-wafer assembly 10 includes an upper shell 101 and a lower shell 102, and the upper shell 101 and the lower shell 102 are bolted together to form a lubrication chamber. An oil pipe 103 is welded to the upper end of the upper shell 101, and the liquid outlet end of the oil pipe 103 is connected to a plurality of groups of transversely arranged oil pipe 103 nozzles, and the oil pipe 103 nozzles are used to spray lubricating oil. Contact sealing assemblies 11 are connected to both sides of the upper shell 101 and the lower shell 102, and the contact sealing assemblies 11 are contact-connected to the outer wall of the ear shaft 4, and the contact sealing assemblies 11 are used for contact sealing of the outer wall of the ear shaft 4.

[0054] The upper shell 101 and the lower shell 102 are bolted together to form a lubrication chamber, and the lubrication chamber is covered on the outer wall of the ear shaft 4. An oil pipe 103 is welded on the upper shell 101, and the external oil inlet pipe 103 is connected through the oil pipe 103. The oil pipe 103 sprays lubricating oil through multiple oil pipe 103 nozzles, so that the lubricating oil is evenly distributed on the outer wall of the ear shaft 4 for uniform lubrication. The contact sealing assembly 11 connected on both sides of the upper shell 101 and the lower shell 102 is sealed at both ends of the connection with the ear shaft 4 to avoid the loss of lubricating oil and ensure the lubrication effect.

[0055] Further, such as Figure 3As shown, an oil retaining shoulder 17 is provided on the outer wall of the trunnion 4 to increase the lubricating oil storage space so that the lubricating oil can fully lubricate the trunnion 4 .

[0056] In this embodiment, Figure 6 As shown, the contact sealing assembly 11 includes a pressure plate 111 and a felt 112. The felt 112 is bolted to the pressure plate 111. The pressure plate 111 is bolted to the upper shell 101 and the lower shell 102. The felt 112 is contact-connected to the outer wall of the ear shaft 4. The felt 112 is used for contact sealing of the outer wall of the ear shaft 4.

[0057] The felt 112 is connected via the pressure plate 111 to provide a sealing connection, thereby contacting and sealing the outer wall of the ear shaft 4 to avoid leakage of lubricating oil.

[0058] In this embodiment, Figure 2 As shown, a glass window 105 is connected to one side of the upper end of the upper shell 101, and the glass window 105 is used to observe the lubrication state of the trunnion 4. An annular round steel 15 is welded to the bolts on the trunnion 4 and the flange 2. The glass window 105 connected to the upper shell 101 is convenient for personnel to observe, and the annular round steel 15 is welded to multiple bolts on the trunnion 4 and the flange 2. The annular round steel 15 fixes and limits multiple bolts to prevent the bolts from falling off during use, and ensures that multiple bolts are stably connected.

[0059] See also Figure 8 The present invention also discloses a method for replacing the sealing device of the wet grinding machine outlet spiral sleeve 1, and the replacement steps are as follows:

[0060] S1. Remove the old spiral sleeve 1 and prepare the spiral sleeve 1, high-strength bolts, hexagon socket countersunk bolts 8, high water-based packing 901, epoxy resin 902 adding device and other materials required for the invention device.

[0061] S2. Screw 3 groups of 12 hexagon socket countersunk bolts 8 clockwise onto the threaded holes inside the spiral sleeve 1. The tightening depth should not exceed the horizontal position of the outer circle of the flange seal.

[0062] S3. Install the high water base packing 901 one by one on the outer circle of the spiral sleeve 1. The high water base packing 901 is cut at 45°, and the overlapping positions of two adjacent high water base packings 901 are staggered by 90 to 180°.

[0063] S4. Press the spiral sleeve 1 with the installed high water base packing 901 and the hexagon socket countersunk bolt 8 into the inner hole of the trunnion 4.

[0064] S5. Loosen the hexagon socket countersunk bolt 8 on the top of the flange 2 near the spiral sleeve 1, rotate the resin 902 nozzle to connect it to the countersunk threaded hole, and connect the rubber braided hose to the carbon steel pipe of the epoxy resin 902 adding device through the clamp 1604.

[0065] S6. Pour the epoxy resin 902 into the storage box of the epoxy resin 902, open the resin 902 pump, and start the resin 902 pump to fill the remaining gap between the high water-based packing 901, the hexagon socket countersunk bolts 8, the spiral sleeve 1 and the ear shaft 4; after curing, the spiral sleeve 1 and the inner hole of the ear shaft 4 are almost bonded into a whole.

[0066] S7. When the resin 902 overflows from the joint surface of the flange ring 5 and the flange 2 of the spiral sleeve 1, immediately stop the resin 902 pump motor, close the resin 902 pump outlet door, tighten 16 M42×180, 10.9 grade high-strength bolts, and weld annular round steel bars 15 between the ends of the high-strength bolts to prevent the bolts from loosening during operation and simultaneously increase the overall strength.

[0067] S8. Loosen the delivery pipe 1605 fixed by the clamp 1604, drain the resin 902 in the delivery pipe 1605 into any container, unscrew the resin 902 nozzle counterclockwise, and restore the hexagon socket countersunk bolt 8.

[0068] S9. Install the high water-based packing 901 ring body on one side of the flange ring 5, evenly compress the packing gland 13, and weld the compressed annular reinforcement rib 131 to the inner hole of the ear shaft 4 for final fixation.

[0069] S10. Tighten 12 hexagon socket countersunk bolts 8 and wait for 24 hours for complete curing before putting it into use. If there is sufficient time, it can be cured for 72 hours to reach the highest bonding strength.

[0070] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A wet mill outlet spiral sleeve sealing device, comprising a spiral sleeve, a trunnion and a large bearing assembly, wherein the spiral sleeve is sleeved and mounted on the trunnion, a flange is welded on the spiral sleeve, one end of the trunnion is bolted to the flange, the large bearing assembly is mounted on the outer wall of the trunnion, and the large bearing assembly is used to supply lubricating oil, characterized in that: A spiral plate is welded to the inner wall of the spiral sleeve, and a plurality of groups of countersunk threaded holes are arranged through the spiral sleeve. The inner threads of the countersunk threaded holes are connected to hexagonal countersunk bolts, and one end of the hexagonal countersunk bolts abuts against the inner wall of the ear shaft. A flange ring is welded to the outer wall of the spiral sleeve, and a plurality of groups of sealing rings are embedded and connected on the flange ring. A raised ring matching the flange ring is arranged in the ear shaft, and the sealing ring is fitted and connected to the inner wall of the raised ring. A sealed cavity is formed between the spiral sleeve and the ear shaft, and the sealed cavity is tightly filled with an adhesive sealing component, which is used to bond and seal the spiral sleeve and the ear shaft to avoid leakage at the connection between the spiral sleeve and the ear shaft.

2. A wet grinding machine outlet spiral sleeve sealing device according to claim 1, characterized in that: The adhesive sealing assembly includes high water-based packing and resin. The high water-based packing is coated on the outer wall of the spiral sleeve, and the resin is tightly filled in the sealing cavity. The high water-based packing and resin are used to bond and seal the spiral sleeve and the ear shaft to avoid leakage at the connection between the spiral sleeve and the ear shaft.

3. A wet grinding machine outlet spiral sleeve sealing device according to claim 2, characterized in that: A high-water-base packing ring is embedded and connected to one end of the spiral sleeve relative to the sealing cavity, a packing gland is welded to the inner wall of the ear shaft, the packing gland abuts against the connected packing gland, one end of the spiral sleeve is sleeved in the packing gland, the high-water-base packing ring is used for sealing the spiral sleeve, and the packing gland is used to limit the high-water-base packing ring.

4. A wet grinding machine outlet spiral sleeve sealing device according to claim 3, characterized in that: It also includes a resin adding device, the liquid outlet end of which is threadedly connected to the countersunk threaded hole of the spiral sleeve. The resin adding device pressurizes and adds resin through the countersunk threaded hole to fill it into the sealing cavity to form an adhesive sealing component.

5. A wet grinding machine outlet spiral sleeve sealing device according to claim 4, characterized in that: The resin adding device includes a storage box, a resin pump, a delivery pipe and a resin nozzle. An opening is provided on the storage box. A resin pump is fixedly installed on one side of the storage box. The resin pump is connected to a ball valve. The ball valve is connected to the delivery pipe through a clamp. The delivery pipe is connected to the resin nozzle. The resin pump pressurizes the resin and outputs it through the resin nozzle. The resin nozzle is threadedly connected to a countersunk threaded hole to pressurize and add resin to fill the sealed cavity. High water-based packings are arranged at intervals near the flange end to form an annular groove. The annular groove facilitates the annular distribution of the resin.

6. A wet grinding machine outlet spiral sleeve sealing device according to claim 5, characterized in that: The bottom of the storage box is connected to multiple sets of universal wheels for easy movement. A filter is installed inside the storage box, and the filter is used to filter the resin flowing into the inlet of the resin pump. A glass level gauge is installed on one side of the storage box, and the glass level gauge is used to display the resin level. A handle is welded on one side of the storage box.

7. A wet grinding machine outlet spiral sleeve sealing device according to claim 1, characterized in that: One end of the ear shaft is fixedly connected with a baffle, the baffle is funnel-shaped, and the large-diameter end of the baffle faces the flange side.

8. The wet grinding machine outlet spiral sleeve sealing device according to claim 1, characterized in that: The large bearing assembly includes an upper shell and a lower shell, and the upper shell and the lower shell are bolted together to form a lubrication chamber. An oil pipe is welded to the upper end of the upper shell, and the liquid outlet end of the oil pipe is connected to a plurality of groups of transversely arranged oil pipe nozzles, and the oil pipe nozzles are used to spray lubricating oil. Contact sealing assemblies are connected to both sides of the upper shell and the lower shell, and the contact sealing assemblies are contact-connected to the outer wall of the ear shaft, and the contact sealing assemblies are used for contact sealing of the outer wall of the ear shaft.

9. A wet grinding machine outlet spiral sleeve sealing device according to claim 8, characterized in that: The contact sealing assembly includes a pressure plate and a felt, wherein the pressure plate is bolted to the felt, the pressure plate is bolted to the upper shell and the lower shell, the felt is contact-connected to the outer wall of the ear shaft, and the felt is used for contact sealing of the outer wall of the ear shaft.

10. A wet grinding machine outlet spiral sleeve sealing device according to claim 9, characterized in that: A glass window is connected to one side of the upper end of the upper shell, and the glass window is used to observe the lubrication state of the ear shaft. Annular round steel is welded on the bolts on the ear shaft and the flange.

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