Tool assembly for disassembling and assembling horizontal screw sedimentation and filtration centrifuge

Abstract

This utility model discloses a tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge, belonging to the field of centrifuge technology. It includes a sling, an L-shaped lifting device, a clamp lifting device, and two hooks. The sling is used to lift the cylinder, front casing, and spiral. The L-shaped lifting device is an L-shaped structure used to lift flange one and flange two, connected to the connecting screw holes on flange one or flange two via front-to-back bolts. The clamp lifting device is a downward-opening U-shaped structure used to lift the top of the front and rear ends of the spiral, connected to the corresponding screw holes via front-to-back bolts. The two hooks are arranged in the front-to-back direction and can hook into the two opposite screw holes at the rear end of the filter screen to pull the filter screen forward. This patent requires only four tools to assist in the disassembly and assembly of the horizontal spiral sedimentation filter centrifuge (designed accordingly), making disassembly and assembly very convenient.

Description

Technical Field

[0001] This utility model belongs to the field of centrifuge technology, and specifically relates to a tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge. Background Technology

[0002] For example, patent application number CN202110451047.X discloses a method for preparing battery-grade anhydrous iron phosphate from industrial ammonium phosphate clarified solution or industrial ammonium phosphate mother liquor, including the following steps: S1. Defluorination: Add diatomaceous earth and sodium carbonate solution to industrial ammonium phosphate clear solution or industrial ammonium phosphate mother liquor and react, then filter to obtain a phosphorus-containing solution after defluorination. S2. Refining: The pH value of the phosphorus-containing solution obtained in step S1 is adjusted, and impurities such as calcium, magnesium, manganese, and aluminum are removed through precipitation reaction to obtain a phosphorus-containing solution with low impurity ion content. S3. Removal of heavy metals: Add a heavy metal precipitant to the phosphorus-containing solution with low impurity ion content obtained in step S2 to remove heavy metal impurities and obtain a refined phosphate solution. S4. Synthesis of ferric phosphate dihydrate: The purified phosphate solution and ferrous sulfate solution obtained in step S3 are fully reacted under the action of an oxidant, then filtered, and the filter cake is washed and dried to obtain ferric phosphate dihydrate. S5. Preparation of battery-grade anhydrous ferric phosphate: The ferric phosphate dihydrate obtained in step S4 is calcined to remove the water of crystallization, thereby obtaining battery-grade anhydrous ferric phosphate.

[0003] The aforementioned process produces ammonium sulfate as a byproduct. After concentration, crystallization, solid-liquid separation, and drying, the ammonium sulfate solution yields solid ammonium sulfate. In actual production, the applicant discovered that if the tool components of a horizontal spiral sedimentation filter centrifuge are disassembled and assembled for solid-liquid separation, the moisture content of the output is about 1%, and there is no need for further drying. This not only reduces the number of steps but also lowers energy consumption. The structure of existing tools and components for disassembling and assembling horizontal spiral sedimentation centrifuges can be found in patent application number CN200420080685.7, which discloses a horizontal pre-thickening centrifuge, mainly comprising: a casing, with a cover at one end and a differential transmission device at the other end; a rotating drum and a spiral body inside the casing, the spiral body being located in the inner cavity of the rotating drum, with spiral blades disposed on the outer wall of the spiral body; a feed pipe extending into the inner cavity of the spiral body; a feed inlet on the side wall of the spiral body; and an overflow hole on the rotating wall plate; the diameter of the rotating drum body near the rotating wall plate is larger than the diameter of the rotating drum body near the discharge port; and a filter through hole is provided on the side wall of the rotating drum near the discharge port; using the above centrifuge, materials can be pre-thickened, and it is suitable for dehydration, sorting, and recycling of small particles and materials with low solid concentration, with high working efficiency and low moisture content of the finished product; and the machine has a wide range of applications.

[0004] The tools and components for disassembling and assembling horizontal spiral sedimentation filter centrifuges typically need to operate at high temperatures (crystallization liquid temperature greater than 80℃) and high speeds (design speed is usually 1000-1200 rpm), and the distance between the spiral and the drum is very small (about 1 mm). In order to ensure good separation effect, the tools and components for disassembling and assembling horizontal spiral sedimentation filter centrifuges need to be disassembled and assembled regularly for maintenance (such as replacement, repair, dynamic balancing, differential oil change (oil change is recommended every 3-6 months)). Summary of the Invention

[0005] This utility model provides a tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge, used for disassembling, assembling, and maintaining the horizontal spiral sedimentation filter centrifuge. The technical solution is as follows: This utility model embodiment provides a tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge, including a sling 28, an L-shaped lifting device 30, a clamp lifting device 31, and two hooks 29. The sling 28 is used to lift the cylinder, front housing, and spiral 4. The L-shaped lifting device 30 has an L-shaped structure and is used to lift flange 10 and flange 21. It is connected to the connecting screw holes 32 on flange 10 or the corresponding screw holes on flange 21 by bolts running in the front and rear directions. The clamp lifting device 31 has a U-shaped structure with a downward opening and is used to lift the top of the front and rear ends of the spiral 4. It is connected to the corresponding screw holes by bolts running in the front and rear directions. The two hooks 29 are arranged in the front and rear directions and can be hooked into the two opposite screw holes at the rear end of the filter screen 22 to pull the filter screen 22 forward.

[0006] Specifically, when the sling 28 is hoisted, it is in a downward-opening V-shape; when hoisting the cylinder, the lower ends of the two arms of the sling 28 are connected to two hoisting connection points 27, which are respectively located at the front and rear ends of the top of the cylinder; when hoisting the front housing, the two arms of the sling 28 are in a ring shape; the lower ends of the two arms are respectively wrapped around the bottom of the front housing, and are located in front of and behind the liquid outlet; when hoisting the spiral 4, the two arms of the sling 28 are in a ring shape; the lower ends of the two arms are respectively wrapped around the bottom of the spiral 4, and are located in front of and behind the spiral 4.

[0007] In this embodiment, the L-shaped lifting device 30 includes a vertically arranged vertical arm, a horizontal arm on the rear side of the upper end of the vertical arm, and a connecting plate 38 at the lower end of the vertical arm. The horizontal arm is arranged in the front-rear direction and is located above the rear housing 13. A lifting connector 39 is provided at its rear end. The connecting plate 38 can be bolted to a flange 10 or a flange 2 11. It has through holes along the front-rear direction for bolts to pass through. The vertical arm is located in front of the rear housing 13.

[0008] Specifically, in this embodiment, the connecting plate 38 is a flange that mates with the flange 11. It is coaxially arranged with the flange 11 and has four through holes. The four through holes correspond one-to-one with the four connecting screw holes 32 on the flange 10, and also correspond one-to-one with the screw holes of the four eighth bolts 34 on the flange 11 used to fix the bearing cover 33.

[0009] Specifically, the hoisting connector 39 in this embodiment includes multiple hanging holes arranged side by side and cooperating with hooks.

[0010] In this embodiment, the clamping device 31 includes a lifting rod 40 arranged in the front-to-back direction, two hanging plates 41 at both ends of the lifting rod 40 and located at the front and rear sides of the drum 5 respectively, and a second lifting connector 42 on the upper side of the lifting rod 40. The hanging plates 41 are located on the lower side of the lifting rod 40 and are detachably mounted on the end of the lifting rod 40 by bolts, and are arranged vertically. The lifting rod 40 is located directly above the drum 5 and is located below the top of the inner wall of the rear housing 13. The lower end of the front hanging plate 41 is provided with a through hole in the front-to-back direction that matches the screw hole corresponding to the sixth bolt 25 at the top, and the lower end of the rear hanging plate 41 is provided with a through hole in the front-to-back direction that matches the screw hole corresponding to the first bolt 12 at the top.

[0011] Specifically, in this embodiment, the length of the front hanging plate 41 is greater than the length of the rear hanging plate 41. The lower end of the front hanging plate 41 abuts against the top of the front side of the rotating drum 5, and the lower end of the rear hanging plate 41 abuts against the top of the rear side of the rotating drum 5.

[0012] In this embodiment, the second hoisting connector 42 is vertically arranged and located at the rear of the hoisting rod 40. It is a hook or a hanging ring. The first bolt 12 has a specification of M16×40. The sixth bolt 25 has a specification of M12×25.

[0013] In this embodiment, the two hooks 29 are symmetrically arranged with respect to the axis of the filter screen 22. They are both located inside the filter screen 22 and on adjacent inner sides of the inner wall of the filter screen 22. The rear end of the hook 29 is bent outward at a right angle to form a connecting end 43, and its front part is bent inward in an arc shape to form a hook 44. The connecting end 43 is arranged radially along the filter screen 22 and can be hooked into the screw hole at the rear end of the filter screen 22.

[0014] Specifically, in this embodiment, the rear end of the filter screen 22 is fixed to the drum 5 by a plurality of radially arranged seventh bolts 26; the specification of the seventh bolts 26 is M6×10; the length of the hook 29 is 400-500mm; the diameter of the connecting end 43 is 5mm and its length is 15mm.

[0015] The beneficial effects of the technical solution provided by this utility model embodiment are: only four tools are needed to assist in the disassembly and assembly of the horizontal spiral sedimentation filter centrifuge (designed accordingly), making disassembly and assembly very convenient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge in an embodiment of this utility model; Figure 2 yes Figure 1 A schematic diagram of the casing before removal; Figure 3 yes Figure 2 A schematic diagram of the dismantling of the cylinder; Figure 4 yes Figure 3 A schematic diagram of the dismantling of the spiral; Figure 5 yes Figure 3 A diagram illustrating the removal of the filter screen; Figure 6 yes Figure 4 A schematic diagram showing the removal of drive shaft one; Figure 7 yes Figure 6 A schematic diagram showing the removal of drive shaft two; Figure 8 yes Figure 2 A schematic diagram showing the process of removing drive shaft one, drive shaft two, and the screw together; Figure 9 This is a structural diagram of an L-shaped lifting device; Figure 10 This is a structural diagram of the clamp lifting device; Figure 11 This is a structural diagram of the hook and hanger.

[0017] In the diagram: 1. Casing; 2. Transmission Housing; 3. Differential Drive Structure; 4. Spiral Body; 5. Drum; 6. Feed Pipe; 7. Baffle Ring; 8. Drive Shaft I; 9. Drive Shaft II; 10. Flange I; 11. Flange II; 12. First Bolt; 13. Rear Casing; 14. Second Bolt; 15. Fixing Ring; 16. Fixing End Face; 17. Third Bolt; 18. Stepped Hole; 19. Shaft Cover; 20. Fourth Bolt; 21. Fifth Bolt; 22. Filter Screen; 23. Limiting Ring; 24. Pressure Ring; 25. Sixth Bolt; 26. Seventh Bolt; 27. Lifting Connection Point; 28. Lifting Strap; 29. ​​Hook Hanger; 30. L-Shaped Lifting Tool; 31. Clamping Plate Lifting Tool; 32. Connecting Screw Hole; 33. Bearing Cover; 34. Eighth Bolt; 35. Cover Plate; 36. Wall Panel; 37. Drive Wheel; 38. Connecting Plate; 39. Lifting Connection Part I; 40. Lifting Rod; 41. Hanging Plate; 42. Lifting Connection Part II; 43. Connecting End; 44. Hook. Detailed Implementation

[0018] To make the objectives, technical solutions and advantages of this utility model clearer, the utility model will be described in further detail below with reference to the accompanying drawings.

[0019] Example 1 See Figure 1-8 Example 1 provides a horizontal spiral sedimentation filter centrifuge, including a casing 1, a transmission casing 2, a differential drive structure 3, a spiral 4, a rotating drum 5, a feed pipe 6, a baffle ring 7, a drive shaft 8, and a drive shaft 9. The casing 1, transmission casing 2, and differential drive structure 3 are arranged sequentially from front to back. The lower front side of the casing 1 has a discharge port (vertically downward), the upper middle side has an exhaust port (vertically upward), and the lower middle side has a liquid outlet (facing left or right). The spiral 4, rotating drum 5, drive shaft 8, and drive shaft 9 are all arranged in a front-to-back direction. The spiral 4 and rotating drum 5 rotate in the same direction, both having a smaller front and larger rear structure, and their shapes are matched. The rotational speed of the rotating drum 5 is greater than that of the spiral 4. The differential drive structure 3 drives the spiral 4 and rotating drum 5 respectively through drive shaft 8 and drive shaft 9.

[0020] The drive shaft 8 is coaxially mounted inside the drive shaft 9 (with a bearing cover 33 between them). The rear ends of both drive shafts 8 and 9 are connected to the differential drive structure 3, and their front ends are coaxially mounted with flange 10 and flange 11, respectively. Flange 11 is located in front of flange 10. Drive shaft 9 is rotatably mounted inside the transmission housing 2. The spiral 4 is coaxially mounted inside the drum 5, with a liquid outlet in its middle section corresponding to the cone section. Its rear part is fitted outside flange 11, and its shape matches the drum 5. The feed pipe 6 is vertically downward mounted on the upper front side of the housing 1, in front of the drum 5. Its end bends backward (specifically, in an arc shape) and passes backward through the baffle ring 7. The drum 5 includes a cylindrical body and a wall plate 36 at its rear end. The cylindrical body comprises a small straight section, a conical section, and a large straight section arranged sequentially from front to back. Both the small and large straight sections are straight cylinders, with the inner diameter of the small straight section being smaller than that of the large straight section. The conical section is a cone-shaped cylinder with a smaller diameter at the front and a larger diameter at the back. The wall plate 36 is rotatably mounted on the housing 1 and is connected to the flange 11. It has an overflow hole. The small straight section has a through hole, and a filter screen 22 is detachably mounted on its inner wall.

[0021] The rear end of the large straight section is connected to the edge of the wall panel 36 by a first bolt 12. The housing 1 includes a front housing and a rear housing 13. The rear housing 13 is fixedly connected to the transmission housing 2. The discharge port, exhaust port, and liquid outlet are all located on the front housing. The front housing and the rear housing 13 are connected by a second bolt 14, and the connection point is located at the front of the large straight section. The front side of the rear housing 13 is open, and an inspection port is provided on its upper rear side. The inspection port is located directly behind the first bolt 12 at the top of the wall panel 36. It is closed by a cover plate 35 on the rear side, and is specifically a vertically arranged rectangular opening. The cover plate 35 is fixed to the rear housing 13 by bolts. It is located above the transmission housing 2 and is specifically a rectangular plate that mates with the inspection port. Specifically, the cover plate 35 is fixed to the rear housing 13 by four bolts (located at the four corners of the rectangular plate).

[0022] The spiral body 4 has a fixing ring 15 in its inner center and a fixing end face 16 in its inner rear. The fixing ring 15 is coaxially arranged with the spiral body 4, and its rear side (inclined) is flush with the rear side of the retaining ring 7. The fixing end face 16 is coaxially arranged with the spiral body 4, and its front side is flush with the front side of the protrusion. The retaining ring 7 is fixed to the front side of the fixing ring 15 by a third bolt 17. The flange 10 has a protrusion (specifically a frustum) in the middle of its front side. The fixing end face 16 has a stepped hole 18 (smaller at the front and larger at the back, a second-order hole) in the middle of its fixing end face 16 that mates with the flange 10 and the protrusion. The flange 10 and the protrusion are embedded in the stepped hole 18. The fixing end face 16 has a shaft cover 19 on its front side for sealing. The shaft cover 19 is connected to the protrusion by a fourth bolt 20 at its center. It is a frustum-shaped structure with a smaller front and larger back, and its rear side has a coaxial frustum-shaped groove that mates with it. The fixed end face 16 is connected to the flange 10 by multiple fifth bolts 21. These fifth bolts 21 are evenly distributed around the axis of the flange 10, located on the same circle, the diameter of which is smaller than the diameter of the shaft cover 19. The shaft cover 19 covers the front of the fixed end face 16, its diameter being smaller than the inner diameter of the fixing ring 15 for easy removal. It conceals the fifth bolts 21 and rests against the front of the protrusion. Multiple connecting screw holes 32 are provided on the protrusion and around the fourth bolt 20. A bearing cover 33 is provided on the front of the flange 11 to fix the bearing (the bearing enables a rotatable connection between the drive shaft 8 and the drive shaft 9). The bearing cover 33 is rotatably connected to the drive shaft 8 and is fixed to the flange 11 by an eighth bolt 34. The screw holes of the eighth bolt 34 and the connecting screw holes 32 are arranged in a one-to-one correspondence. Both the screw holes of the eighth bolt 34 and the connecting screw holes 32 can be connected to the L-shaped lifting device 30.

[0023] The drum 5 has a lifting connection point 27 (which can be a hanging ring, hook, connecting block, etc.) at both its front and rear ends. The two lifting connection points 27 are located on the same vertical plane in the front-back direction. A filter screen 22 is detachably installed inside the small straight section. A limiting ring 23 that mates with the filter screen 22 is coaxially installed at its inner rear end, and a pressure ring 24 is installed at its front end. The pressure ring 24 is coaxially installed with the drum 5 and is a circular ring structure. It is fixed to the small straight section by a sixth bolt 25 and presses against the front side of the filter screen 22. The filter screen 22 is a cylindrical structure that mates with the small straight section. Its rear end rests against the limiting ring 23, and its inner rear end is flush with the inner front end of the conical section. Its rear end is fixed to the small straight section by multiple radially arranged seventh bolts 26, and its front end is turned outward to form a folded edge (perpendicular to the filter screen 22). The screw holes corresponding to the two opposite seventh bolts 26 serve as hook holes for removing the filter screen 22 (as shown in the figure, located at the upper and lower ends respectively). The screw hole corresponding to the sixth bolt 25 is set one-to-one with the screw hole corresponding to the first bolt 12, and they can be connected to the two booms of the clamp lifting device 31 respectively.

[0024] Specifically, in this embodiment of the invention, the second bolt 14 is positioned rearward, has an M16×50 specification, and there are 16 bolts. The first bolt 12 is positioned forward, has an M16×40 specification, and there are 16 bolts. The third bolt 17 is positioned rearward, has an M10×25 specification, and there are 8 bolts. The fifth bolt 21 is positioned rearward, has an M10×30 specification, and there are 6 bolts. The sixth bolt 25 is positioned rearward, has an M12×25 specification, and there are 12 bolts. The seventh bolt 26 is positioned outward, has an M6×10 specification, and there are 6 bolts. The eighth bolt 34 is positioned rearward, has an M16×45 specification, and there are 4 bolts. These are merely specific examples and are not intended to limit the scope of this patent. In this patent, gaskets or sealing rings are provided for the bolts.

[0025] Example 2 Example 2 provides a tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge, including a sling 28, an L-shaped lifting tool 30, a clamp lifting tool 31, and two hooks 29.

[0026] The lifting sling 28 is used for lifting the cylinder, front housing, and spiral 4. When lifting, the lifting sling 28 forms a downward-opening V-shape (the upper end connects to the hook). When lifting the cylinder, the lower ends of the two arms of the lifting sling 28 connect to two lifting connection points 27, located at the front and rear ends of the top of the cylinder. When lifting the front housing, the two arms of the lifting sling 28 form a ring; the lower ends of the two arms wrap around the bottom of the front housing, located in front of and behind the liquid outlet, respectively, at the front and rear of the front housing. When lifting the spiral 4, the two arms of the lifting sling 28 form a ring; the lower ends of the two arms wrap around the bottom of the spiral 4, located in front of and behind the spiral 4, respectively.

[0027] The L-shaped lifting device 30 has an L-shaped structure and is used to lift flange 10 and flange 21. It is connected to the connecting bolt holes 32 on flange 10 or the corresponding bolt holes on flange 21 via bolts running in a front-to-back direction. The L-shaped lifting device 30 includes a vertical arm, a horizontal arm, and a connecting plate 38. The horizontal arm is arranged in a front-to-back direction and is located above the rear housing 13. A lifting connector 39 is provided at its rear end. The vertical arm is located below the front end of the horizontal arm and is vertically arranged, located in front of the rear housing 13. The connecting plate 38 is located at the lower end of the vertical arm and can be bolted to flange 10 or flange 21. It has through holes along its front-to-back direction for bolts to pass through, which mate with flange 10 or flange 21. The lifting connector 39 is used to connect with a hook and specifically includes multiple (e.g., three) hook holes arranged side by side and mate with the hook.

[0028] The clamping device 31 is a U-shaped structure with a downward opening, used to lift the tops of the front and rear ends of the spiral body 4. It is connected to corresponding screw holes via bolts running in the front and rear directions. The lifting device 31 includes a lifting rod 40, a lifting connector 42, and two hanging plates 41. The lifting rod 40 is arranged in the front and rear direction, located directly above the drum 5 and below the top of the inner wall of the rear housing 13. It is a round rod with screw holes at both its front and rear ends. The two hanging plates 41 are located at the front and rear ends of the lifting rod 40, respectively, on the front and rear sides of the drum 5. Specifically, the length of the front hanging plate 41 is greater than that of the rear hanging plate 41. The lower end of the front hanging plate 41 abuts against the top of the front side of the drum 5, and the lower end of the rear hanging plate 41 abuts against the top of the rear side of the drum 5. The hanging plates 41 are located below the lifting rod 40 and are detachably bolted to the end of the lifting rod 40. They are vertically arranged and are specifically rectangular plates. The lower end of the front mounting plate 41 has a through hole along the front-back direction that mates with the screw hole corresponding to the sixth bolt 25 at the top. The lower end of the rear mounting plate 41 has a through hole along the front-back direction that mates with the screw hole corresponding to the first bolt 12 at the top. The second lifting connector 42 is vertically arranged, located on the upper side of the lifting rod 40 and at the rear of the lifting rod 40. It is a hook or hanging ring, etc.

[0029] Two hooks 29 are arranged in the front-to-back direction and can be hooked into two opposite screw holes at the rear end of the filter screen 22 to pull the filter screen 22 forward. Preferably, the two hooks 29 are symmetrically arranged about the axis of the filter screen 22. Specifically, the hooks 29 are located inside the filter screen 22, on adjacent inner sides of the inner wall of the filter screen 22. Their rear ends are bent outward at a right angle to form a connecting end 43, and their front ends are bent inward in an arc shape to form a hook 44 (specifically a semicircle). The connecting end 43 is arranged radially along the filter screen 22 and can be hooked into the screw hole at the rear end of the filter screen 22. Specifically, it is a round rod smaller than the screw hole.

[0030] Example 3 Example 3 provides a tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge. Its structure is basically the same as that of Example 2, except that the connecting plate 38 in this example is a flange that mates with flange 11. It is coaxially arranged with flange 11 and has four through holes. These four through holes correspond one-to-one with the four connecting screw holes 32 on flange 10, and also correspond one-to-one with the screw holes of the four eighth bolts 34 on flange 11 used to fix the bearing cover 33.

[0031] Example 4 Example 4 provides a tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge. Its structure is basically the same as that of Example 2, except that: in this example, the first bolt 12 is M16×40, and the lower end of the rear hanging plate 41 is correspondingly positioned there; the sixth bolt 25 is M12×25, and the lower end of the front hanging plate 41 is correspondingly positioned there.

[0032] Example 5 Example 5 provides a tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge. Its structure is basically the same as that of Example 2, except that the seventh bolt 26 in this example is M6×10, and the connecting end 43 is correspondingly positioned. Specifically, the hook 29 has a length of 400-500mm (corresponding to a filter screen 22 length of 650mm). The connecting end 43 has a diameter of 5mm and a length of 15mm.

[0033] Example 6 Example 6 provides a tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge. Its structure is basically the same as that of Example 2, except that the second lifting connector 42 in this example is adjustable on the lifting rod 40. The lower end of the second lifting connector 42 is provided with a sliding sleeve that mates with the lifting rod 40. The sliding sleeve is fitted onto the lifting rod 40 and can be adjusted back and forth on the lifting rod 40. It is locked by a locking bolt (vertically upward) at the bottom.

[0034] Example 7 See Figure 1-8 Example 7 provides a method for disassembling and assembling a tool assembly for a horizontal spiral sedimentation filter centrifuge, using the tool assembly provided in Example 2. The method includes: S1 front casing removed: See Figure 2 The bottom of the front housing is hoisted using sling 28 (which is V-shaped, with the lower ends of the two arms wrapped around the front and rear of the liquid outlet, respectively), the second bolt 14 is removed, and the front housing is moved forward to remove it.

[0035] S2 Removal of the cylinder: See Figure 3First, remove the cover plate 35, then use the sling 28 (which is V-shaped with two arms of different lengths, the front arm being longer) to lift the two lifting connection points 27 on the cylinder, remove the first bolt 12 through the inspection port, and move the cylinder forward to remove it.

[0036] S3 Dismantling of the spiral: See Figure 4 First, remove the third bolt 17 to remove the retaining ring 7. Then, use the sling 28 (which is V-shaped with two arms of different lengths, the front arm being longer) to lift the bottom of the spiral body 4. Next, remove the fourth bolt 20 and the fifth bolt 21. Take the shaft cover 19 forward from the center hole of the fixing ring 15 and move the spiral body 4 forward to remove it.

[0037] S4 Filter Removal: See Figure 5 First, remove the sixth bolt 25 and the seventh bolt 26, and take off the pressure ring 24; hook the two hooks 29 into the two hook holes (which are the screw holes corresponding to the two seventh bolts 26), and move the filter screen 22 forward to remove the filter screen 22. Specifically, insert the connecting end 43 into the corresponding hook hole and pull the hook 44 forward.

[0038] S5 Differential Drive Structure and Drive Shaft Removal Part 1: See [link] Figure 6 Connect the connecting plate 38 of the L-shaped lifting device 30 to the connecting screw hole 32 with bolts, remove the eighth bolt 34 and the bearing cover 33 (retained on the drive shaft 8), move the drive shaft 8 forward to remove the drive shaft 8, and then separate the differential drive structure 3 from the drive shaft 9.

[0039] S6 drive shaft removal part: See Figure 7 Connect the connecting plate 38 of the L-shaped lifting device 30 to the screw hole corresponding to the eighth bolt 34 by bolts, remove the drive wheel 37 at the rear end of the drive shaft 2 9, and move the drive shaft 2 9 forward to remove the drive shaft 2 9.

[0040] The following steps can be performed after step S1: S7 Dismantles the auger and drum: See [link] Figure 8 Remove the drive wheel 37 at the rear end of drive shaft 29, first remove the cover plate 35, remove the first bolt 12 at the top through the inspection port, and remove the sixth bolt 25 at the top. Connect the lower ends of the two hanging plates 41 of the clamping plate hanger 31 to the screw holes corresponding to the first bolt 12 and the sixth bolt 25 at the top respectively using bolts; pull the clamping plate hanger 31 forward to remove the auger 4 and the drum 5.

[0041] The order of steps S3 and S4 can be adjusted, or S4 can be omitted or executed last.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge, characterized in that: Includes slings (28), L-shaped lifting devices (30), clamp lifting devices (31), and two hooks (29); The slings (28) are used for hoisting the cylinder, front housing and spiral (4); The L-shaped lifting device (30) has an L-shaped structure and is used to lift flange one (10) and flange two (11). It is connected to the connecting screw hole (32) on flange one (10) or the corresponding screw hole on flange two (11) by bolts in the front and rear directions. The clamp lifting device (31) is a U-shaped structure with an open bottom, which is used to lift the top of the front and rear ends of the spiral body (4). It is connected to the corresponding screw holes by bolts in the front and rear directions. Two hooks (29) are arranged in the front-to-back direction, and can be hooked into two opposite screw holes at the rear end of the filter screen (22) to pull the filter screen (22) forward.

2. The tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge according to claim 1, characterized in that, When the sling (28) is hoisted, it is in a downward-opening V-shape; When hoisting the cylinder, the lower ends of the two arms of the sling (28) are connected to two hoisting connection points (27) respectively. The two hoisting connection points (27) are respectively located at the front and rear ends of the top of the cylinder. When hoisting the front housing, the two arms of the hoisting strap (28) are in a ring shape; the lower ends of the two arms are respectively wrapped around the bottom of the front housing, and are located in front of and behind the liquid outlet. When hoisting the spiral (4), the two arms of the sling (28) are in a ring shape; the lower ends of the two arms are respectively wrapped around the bottom of the spiral (4), and are located at the front and rear of the spiral (4).

3. The tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge according to claim 1, characterized in that, The L-shaped lifting device (30) includes a vertically arranged vertical arm, a horizontal arm on the rear side of the upper end of the vertical arm, and a connecting plate (38) at the lower end of the vertical arm. The horizontal arm is arranged in the front-rear direction and is located above the rear housing (13). A lifting connector (39) is provided at its rear end. The connecting plate (38) can be bolted to a flange (10) or a flange (11). A through hole for bolts to pass through is provided on its upper front-rear direction. The vertical arm is located in front of the rear housing (13).

4. The tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge according to claim 3, characterized in that, The connecting plate (38) is a flange that mates with flange two (11). It is coaxially arranged with flange two (11) and has four through holes. The four through holes correspond one-to-one with the four connecting screw holes (32) on flange one (10) and also correspond one-to-one with the screw holes of the four eighth bolts (34) on flange two (11) used to fix the bearing cover (33).

5. The tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge according to claim 3, characterized in that, The hoisting connector (39) includes multiple hanging holes arranged side by side and cooperating with hooks.

6. The tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge according to claim 1, characterized in that, The clamping device (31) includes a lifting rod (40) arranged in the front-rear direction, two hanging plates (41) at both ends of the lifting rod (40) and located at the front and rear sides of the drum (5) respectively, and a second lifting connector (42) on the upper side of the lifting rod (40); the hanging plate (41) is located on the lower side of the lifting rod (40), and is detachably mounted on the end of the lifting rod (40) by bolts, and is arranged vertically; the lifting rod (40) is located directly above the drum (5), and is located below the top of the inner wall of the rear housing (13); the lower end of the front hanging plate (41) is provided with a through hole in the front-rear direction that matches the screw hole corresponding to the sixth bolt (25) at the top, and the lower end of the rear hanging plate (41) is provided with a through hole in the front-rear direction that matches the screw hole corresponding to the first bolt (12) at the top.

7. The tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge according to claim 6, characterized in that, The length of the front mounting plate (41) is greater than the length of the rear mounting plate (41). The lower end of the front mounting plate (41) rests against the top of the front side of the drum (5), and the lower end of the rear mounting plate (41) rests against the top of the rear side of the drum (5).

8. The tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge according to claim 6, characterized in that, The second hoisting connector (42) is vertically arranged and located at the rear of the hoisting rod (40). It is a hook or a hanging ring. The first bolt (12) has a specification of M16×40. The sixth bolt (25) has a specification of M12×25.

9. The tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge according to claim 1, characterized in that, Two hooks (29) are symmetrically arranged about the axis of the filter screen (22), both located inside the filter screen (22) and on adjacent inner sides of the inner wall of the filter screen (22); the rear end of the hook (29) is bent outward at a right angle to form a connecting end (43), and its front part is bent inward in an arc shape to form a hook (44); the connecting end (43) is arranged along the radial direction of the filter screen (22) and can be hooked in the screw hole at the rear end of the filter screen (22).

10. The tool assembly for disassembling and assembling a horizontal spiral sedimentation filter centrifuge according to claim 9, characterized in that, The rear end of the filter screen (22) is fixed to the drum (5) by a plurality of radially arranged seventh bolts (26); the seventh bolts (26) are M6×10; the hook (29) is 400-500mm long; the connecting end (43) is 5mm in diameter and 15mm in length.

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