Sealing device for silicon carbide desulfurization centrifugal pump

Abstract

The utility model discloses a sealing device for a silicon carbide desulfurization centrifugal pump, and relates to the technical field of mechanical sealing. The sealing device comprises a centrifugal pump water inlet, a water inlet pipe is rotationally connected to the centrifugal pump water inlet, and a sealing assembly and a clamping assembly are fixedly connected to the outer wall of the centrifugal pump water inlet; the first thread on the inner wall of the nut sleeve is in threaded connection with the second thread on the outer wall of the water inlet pipe, so that the water inlet pipe and the water inlet of the centrifugal pump are preliminarily sealed; when a water inlet of the centrifugal pump drives the first fixing ring to move, the pull rod drives the nut sleeve to move through the extension spring, the position and pressure of the sealing component can be automatically adjusted according to actual working condition changes, it is ensured that the connecting part is in a tight fit state all the time, and the sealing convex block and the sealing concave block are in tight insertion fit, and gaps are further filled; liquid leakage is prevented, the sealing effect is improved, and dielectric loss and environmental pollution caused by leakage are reduced.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal technology, specifically a sealing device for a silicon carbide desulfurization centrifugal pump. Background Technology

[0002] In industrial production, silicon carbide desulfurization centrifugal pumps are widely used in flue gas desulfurization, chemical wastewater treatment and other fields due to their excellent wear resistance and corrosion resistance. However, since the conveying medium is mostly slurry containing a large number of solid particles and corrosive components, the sealing device at the inlet of the centrifugal pump faces great challenges.

[0003] Traditional centrifugal pump sealing methods, such as packing seals and mechanical seals, have certain drawbacks. After prolonged use, packing seals are prone to wear and leakage due to slurry erosion and corrosion. This not only requires frequent packing replacement, increasing maintenance costs and workload, but also causes environmental pollution from leaked slurry. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a sealing device for silicon carbide desulfurization centrifugal pumps, which solves the problem of packing wear and leakage caused by slurry erosion and corrosion in silicon carbide desulfurization centrifugal pumps.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a sealing device for a silicon carbide desulfurization centrifugal pump, comprising a centrifugal pump inlet, a water inlet pipe rotatably connected to the centrifugal pump inlet, and a sealing assembly and a clamping assembly fixedly connected to the outer wall of the centrifugal pump inlet; the sealing assembly comprises a first fixing ring, a sliding sleeve fixedly connected to the outer wall of the first fixing ring, a tension spring fixedly connected to the inner wall of the sliding sleeve, a pull rod fixedly connected to the end of the tension spring, a nut sleeve slidably connected to the end of the pull rod, a groove formed on the outer wall of the nut sleeve, a first thread formed on the inner wall of the nut sleeve, a sealing protrusion fixedly connected to the end of the centrifugal pump inlet, a sealing concave block fixedly connected to the end of the water inlet pipe near the centrifugal pump inlet, and a second thread formed on the outer wall of the water inlet pipe.

[0008] Preferably, the inner wall of the first fixing ring is fixedly connected to the outer wall of the centrifugal pump inlet, one end of the pull rod is slidably connected to the inner wall of the sliding sleeve, and the other end of the pull rod is slidably connected to the inner wall of the sliding groove. The centrifugal pump inlet drives the first fixing ring to move, and the pull rod drives the threaded sleeve to move through the tension spring.

[0009] Preferably, the nut sleeve is threadedly connected to the second thread through the first thread on the inner wall, and the sealing protrusion and the sealing concave block are in contact. After the first thread and the second thread are threadedly connected, the water inlet pipe and the water inlet of the centrifugal pump can be initially sealed. The sealing protrusion and the sealing concave block are inserted to improve the sealing performance.

[0010] Preferably, the clamping assembly includes a second fixing ring, a first fixing block is fixedly connected to the outer wall of the second fixing ring, a screw is threadedly connected to the inner wall of the first fixing block, a turntable is fixedly connected to one end of the screw, a connecting block is fixedly connected to the outer wall of the centrifugal pump inlet, a second fixing sleeve is fixedly connected to the outer wall of the connecting block, a second fixing block is fixedly connected to the outer wall of the second fixing sleeve, and an auxiliary rod is slidably connected to the inner wall of the second fixing block.

[0011] Preferably, the inner wall of the second fixing ring is fixedly connected to the outer wall of the water inlet pipe, and a limit block is fixedly connected to the other end of the screw. The water inlet pipe drives the second fixing ring to move accordingly. Rotating the screw can make the centrifugal pump inlet and the water inlet pipe more secure, and the limit block can prevent the screw from falling off.

[0012] Preferably, both ends of the auxiliary rod are provided with limit blocks, and the outer wall of the second fixing ring is provided with a second fixing block. The limit blocks at both ends can restrict the auxiliary rod to prevent it from falling off. The auxiliary rod assists the upper screw to rotate and prevents it from deviating during sealing. The second fixing block, which is horizontally arranged at the bottom of the first fixing ring and the second fixing ring, further assists in making the sealing performance tighter.

[0013] (III) Beneficial Effects

[0014] This invention provides a sealing device for a silicon carbide desulfurization centrifugal pump. It has the following beneficial effects:

[0015] (I) The sealing device for a silicon carbide desulfurization centrifugal pump achieves initial sealing between the inlet pipe and the centrifugal pump inlet by connecting the first thread on the inner wall of the nut sleeve with the second thread on the outer wall of the inlet pipe through a threaded connection. When the centrifugal pump inlet moves the first fixed ring, the pull rod moves the nut sleeve through the tension spring. The position and pressure of the sealing components can be automatically adjusted according to the actual working conditions to ensure that the connection is always in a tight fit. The sealing protrusion and sealing concave block are tightly inserted and matched to further fill the gap, prevent liquid leakage, improve the sealing effect, ensure the sealing performance and stability of the silicon carbide desulfurization centrifugal pump during operation, and reduce media loss and environmental pollution caused by leakage.

[0016] (II) The sealing device for the silicon carbide desulfurization centrifugal pump provides additional clamping force to the connection through the coordinated work of components such as screw, turntable, limiting block and auxiliary rod, making the connection between the centrifugal pump inlet and the inlet pipe more stable. The auxiliary rod not only assists the screw rotation and prevents deviation during sealing, but the limiting blocks at both ends of the auxiliary rod can also prevent the auxiliary rod from falling off. The second fixing block, which is horizontally set at the bottom of the first fixing ring and the second fixing ring, further enhances the sealing performance and reduces the risk of wear and leakage caused by loose connection, thereby extending the overall service life of the silicon carbide desulfurization centrifugal pump and reducing the cost of equipment replacement and maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the sealing assembly of this utility model;

[0019] Figure 3 This is a schematic diagram of the sealing protrusion of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the nut sleeve of this utility model;

[0021] Figure 5 This is a schematic diagram of the clamping assembly of this utility model.

[0022] In the diagram: 1. Centrifugal pump inlet; 2. Inlet pipe; 3. Sealing assembly; 4. Clamping assembly; 31. First retaining ring; 32. Sliding sleeve; 33. Tension spring; 34. Pull rod; 35. Nut sleeve; 36. Slide groove; 37. First thread; 38. Sealing protrusion; 39. Sealing concave block; 310. Second thread; 41. Second retaining ring; 42. First fixing block; 43. Screw; 44. Turntable; 45. Second fixing sleeve; 46. Connecting block; 47. Second fixing block; 48. Auxiliary rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-5This utility model provides a technical solution: a sealing device for a silicon carbide desulfurization centrifugal pump, including a centrifugal pump inlet 1, an inlet pipe 2 rotatably connected to the centrifugal pump inlet 1, and a sealing assembly 3 and a clamping assembly 4 fixedly connected to the outer wall of the centrifugal pump inlet 1; the sealing assembly 3 includes a first fixing ring 31, a sliding sleeve 32 fixedly connected to the outer wall of the first fixing ring 31, a tension spring 33 fixedly connected to the inner wall of the sliding sleeve 32, a pull rod 34 fixedly connected to the end of the tension spring 33, a nut sleeve 35 slidably connected to the end of the pull rod 34, a groove 36 opened on the outer wall of the nut sleeve 35, a first thread 37 provided on the inner wall of the nut sleeve 35, a sealing protrusion 38 fixedly connected to the end of the centrifugal pump inlet 1, and the inlet pipe 2 near the centrifugal pump inlet 1. A sealing recess 39 is fixedly connected to the end of the inlet pipe 2. A second thread 310 is provided on the outer wall of the inlet pipe 2. The inner wall of the first fixing ring 31 is fixedly connected to the outer wall of the centrifugal pump inlet 1. One end of the pull rod 34 is slidably connected to the inner wall of the sliding sleeve 32, and the other end of the pull rod 34 is slidably connected to the inner wall of the sliding groove 36. The centrifugal pump inlet 1 drives the first fixing ring 31 to move. The pull rod 34 drives the threaded sleeve to move through the tension spring 33. The nut sleeve 35 is threadedly connected to the second thread 310 through the first thread 37 provided on the inner wall. The sealing protrusion 38 contacts the sealing recess 39. After the first thread 37 and the second thread 310 are threadedly connected, the inlet pipe 2 and the centrifugal pump inlet 1 can be initially sealed. The sealing protrusion 38 and the sealing recess 39 are inserted to improve the sealing performance.

[0025] The clamping assembly 4 includes a second fixing ring 41, a first fixing block 42 fixedly connected to the outer wall of the second fixing ring 41, a screw 43 threadedly connected to the inner wall of the first fixing block 42, a turntable 44 fixedly connected to one end of the screw 43, a connecting block 46 fixedly connected to the outer wall of the centrifugal pump inlet 1, a second fixing sleeve 45 fixedly connected to the outer wall of the connecting block 46, a second fixing block 47 fixedly connected to the outer wall of the second fixing sleeve 45, an auxiliary rod 48 slidably connected to the inner wall of the second fixing block 47, and the inner wall of the second fixing ring 41 fixedly connected to the outer wall of the inlet pipe 2. The other end of the screw 43... The end is fixedly connected to a limiting block. The water inlet pipe 2 drives the second fixing ring 41 to move accordingly. Rotating the screw 43 can make the centrifugal pump inlet 1 and the water inlet pipe 2 more secure. The limiting block can prevent the screw 43 from falling off. Limiting blocks are provided at both ends of the auxiliary rod 48. The outer wall of the second fixing ring 41 is provided with a second fixing block 47. The limiting blocks at both ends can restrict the auxiliary rod 48 to prevent it from falling off. The auxiliary rod 48 assists the upper screw 43 to rotate and prevents it from deviating during sealing. The second fixing block 47, which is horizontally set at the bottom of the first fixing ring 31 and the second fixing ring 41, further assists in making the sealing performance tighter.

[0026] When using the centrifugal pump, if sealing is required, first bring the inlet pipe 2 close to the centrifugal pump inlet 1, so that the sealing protrusion 38 and the sealing recess 39 come into contact with each other. Since the inner wall of the first fixing ring 31 is fixedly connected to the outer wall of the centrifugal pump inlet 1, the outer wall of the inlet pipe 2 is provided with a second thread 310, and the inner wall of the nut sleeve 35 is provided with a first thread 37, under the action of the tension spring 33, the pull rod 34 pulls the nut sleeve 35 to move, so that the nut sleeve 35 is threadedly connected to the second thread 310 through the first thread 37. At this time, the inlet pipe 2 and the centrifugal pump inlet 1 are initially sealed. The insertion and cooperation of the sealing protrusion 38 and the sealing recess 39 further improves the sealing effect and prevents liquid from leaking from the connection. The connection is further reinforced by the clamping assembly 4, because the inner wall of the second fixing ring 41 and the second thread 310 are fixedly connected to the centrifugal pump inlet 1. The inlet pipe 2 is fixedly connected to the outer wall. Rotating the turntable 44 drives the screw 43 to rotate. While the screw 43 rotates in the thread of the first fixed block 42, the limiting block at its end pushes the centrifugal pump inlet 1, making the connection between the inlet pipe 2 and the centrifugal pump inlet 1 more secure. At the same time, the auxiliary rod 48 slides in the second fixed block 47. The limiting blocks at both ends prevent the auxiliary rod 48 from falling off. It plays the role of assisting the rotation of the screw 43 and avoiding deviation during the sealing process. The second fixed block 47, which is horizontally set at the bottom of the first fixed ring 31 and the second fixed ring 41, further enhances the sealing performance and ensures the tightness of the connection. This allows the entire sealing device to withstand liquid pressure and work stably and reliably during the operation of the centrifugal pump, preventing liquid leakage and ensuring the normal operation of the silicon carbide desulfurization centrifugal pump.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealing device for a silicon carbide desulphurization centrifugal pump, comprising a centrifugal pump water inlet (1), a water inlet pipe (2) is rotatably connected at the centrifugal pump water inlet (1), characterized in that: The outer wall of the centrifugal pump water inlet (1) is fixedly connected with a sealing assembly (3) and a clamping assembly (4); The sealing assembly (3) comprises a first fixed ring (31), the outer wall of the first fixed ring (31) is fixedly connected with a sliding sleeve (32), the inner wall of the sliding sleeve (32) is fixedly connected with a tension spring (33), the end of the tension spring (33) is fixedly connected with a pull rod (34), the end of the pull rod (34) is slidingly connected with a nut sleeve (35), the outer wall of the nut sleeve (35) is provided with a sliding groove (36), the inner wall of the nut sleeve (35) is provided with a first thread (37), the end of the centrifugal pump water inlet (1) is fixedly connected with a sealing protrusion (38), one end of the water inlet pipe (2) close to the centrifugal pump water inlet (1) is fixedly connected with a sealing recess (39), and the outer wall of the water inlet pipe (2) is provided with a second thread (310).

2. A seal assembly for a centrifugal pump for silicon carbide desulfurization according to claim 1, wherein: The inner wall of the first fixed ring (31) is fixedly connected with the outer wall of the centrifugal pump water inlet (1), one end of the pull rod (34) is slidingly connected with the inner wall of the sliding sleeve (32), and the other end of the pull rod (34) is slidingly connected with the inner wall of the sliding groove (36).

3. A seal assembly for a centrifugal pump for silicon carbide desulfurization according to claim 1, wherein: The nut sleeve (35) is screwed with the second thread (310) through the first thread (37) arranged on the inner wall, and the sealing protrusion (38) is in contact with the sealing recess (39).

4. A seal assembly for a centrifugal pump for silicon carbide desulfurization according to claim 1, wherein: The clamping assembly (4) comprises a second fixed ring (41), the outer wall of the second fixed ring (41) is fixedly connected with a first fixed block (42), the inner wall of the first fixed block (42) is threadedly connected with a screw rod (43), one end of the screw rod (43) is fixedly connected with a rotating disc (44), the outer wall of the centrifugal pump water inlet (1) is fixedly connected with a connecting block (46), the outer wall of the connecting block (46) is fixedly connected with a second fixed sleeve (45), the outer wall of the second fixed sleeve (45) is fixedly connected with a second fixed block (47), and the inner wall of the second fixed block (47) is slidingly connected with an auxiliary rod (48).

5. A seal assembly for a centrifugal pump for silicon carbide desulfurization according to claim 4, wherein: The inner wall of the second fixed ring (41) is fixedly connected with the outer wall of the water inlet pipe (2), and the other end of the screw rod (43) is fixedly connected with a limiting block.

6. A seal assembly for a centrifugal pump for silicon carbide desulfurization according to claim 4, wherein: The two ends of the auxiliary rod (48) are provided with limiting blocks, and the outer wall of the second fixed ring (41) is provided with the second fixed block (47).

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