Mechanical sealing type ceramic slurry pump

Abstract

The utility model relates to the technical field of slurry pump equipment, in particular to a mechanical sealing type ceramic slurry pump which comprises a bracket assembly, a ceramic pump body assembly, a ceramic impeller, a plurality of bolts and a plurality of screws. The outer surface of the main shaft is rotationally connected to the interior of the bracket assembly and the interior of the ceramic pump body assembly, one end of the main shaft is fixedly connected to one side of the ceramic impeller, and the ceramic impeller is located in the ceramic pump body assembly. The sealing structure is provided with the mechanical seal, the joint plate and the sealing shaft sleeve, connection of a pressure reducing cover is reduced, excessive matching is reduced, and therefore matching difficulty is reduced, matching precision is improved, and the matching precision in the whole connecting process can meet the requirement of the mechanical seal. And meanwhile, the mechanical seal is mounted at the front end of the joint plate and detachably connected through bolts, so that the mechanical seal is convenient to replace, and the maintenance speed of the porcelain slurry pump is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of slurry pump equipment, in particular to a mechanical seal type ceramic slurry pump. Background Art

[0002] Slurry pump is the key equipment for conveying slurry in mineral processing plant. Its service life and maintenance convenience are the key to whether the mineral processing plant can operate smoothly. Traditional slurry pump is generally sealed with packing, and it is difficult to eliminate leakage at the packing. Even if some manufacturers use mechanical seals, with the widespread application of ceramic materials in slurry pumps, the wear life of wet parts has doubled, making it difficult for the life of mechanical seals to match the life of wet parts. The reasons for the short life of mechanical seals are: first, the slurry concentration is too high, and the dynamic ring seat of the mechanical seal is worn and fails; second, the traditional slurry pump needs a pressure relief cover to connect the mechanical seal with the joint plate or pump body, and the joint plate and pump body are connected to the bracket. Too many size chains make it difficult to meet the matching accuracy requirements of the mechanical seal, and it is not convenient to replace the mechanical seal. Utility Model Content

[0003] In order to facilitate the replacement of mechanical seals and to increase the service life of mechanical seals, the utility model provides a mechanical seal type ceramic slurry pump.

[0004] The utility model provides a mechanical seal ceramic slurry pump adopts the following technical solution:

[0005] A mechanical seal ceramic slurry pump comprises a bracket assembly, a ceramic pump body assembly, a ceramic impeller, a plurality of bolts and a plurality of screws, wherein the bracket assembly comprises a bracket, a main shaft and a transmission bearing, the outer surface of the main shaft is rotatably connected to the interior of the bracket assembly and the interior of the ceramic pump body assembly, one end of the main shaft is fixedly connected to one side of the ceramic impeller, the ceramic impeller is located inside the ceramic pump body assembly, one side of the ceramic pump body assembly is connected to one side of a connecting plate by corresponding bolts, one side of the connecting plate is connected to one side of a ceramic rear guard plate by corresponding bolts, the outer surface of the main shaft is fixedly connected to a sealing sleeve, a part of the screws penetrate the mechanical seal and are clamped to the outer surface of the sealing sleeve, and the mechanical seal is connected to the inner hole of the connecting plate by bolts.

[0006] By adopting the above technical solution, the mechanical seal is directly connected to the bracket assembly through the coupling plate, thereby reducing the connection of a pressure reducing cover and reducing excessive fitting, thereby reducing the difficulty of fitting and improving the fitting accuracy, which is conducive to making the fitting accuracy of the entire connection process meet the requirements of the mechanical seal.

[0007] Preferably, the top of the mechanical seal and the side wall of the joint plate are both fixedly connected with cooling water connecting pipes.

[0008] Preferably, a cavity is opened inside the mechanical seal, the mechanical seal includes a convex plate, the bottom of the connecting plate overlaps the outer surface of the mechanical seal, and a part of the bolts penetrates the connecting plate and is threadedly connected to the inside of the convex plate.

[0009] Preferably, a second cavity is opened between the joining plate and the ceramic rear guard plate, the convex plate is located inside the second cavity, and the interiors of the two cooling water connecting pipes are respectively connected with the interiors of the first cavity and the second cavity.

[0010] By adopting the above technical solution, a cooling water pipe is connected, and flushing water is injected into the interior of cavity one and cavity two, which ensures that the mechanical seal has a better cooling effect while minimizing the slurry concentration, so that the mechanical seal is in a better operating environment.

[0011] Preferably, the sealing sleeve is located between the bracket assembly and the ceramic pump body assembly.

[0012] By adopting the above technical solution, the mechanical seal is installed on the pump body of the ceramic slurry pump through the sealing sleeve.

[0013] Preferably, the ceramic rear guard plate is located between the joining plate and the ceramic pump body assembly.

[0014] By adopting the above technical solution, it is convenient to remove the mechanical seal after removing the pump body assembly, the ceramic impeller and the ceramic rear guard plate when repairing the pump, thereby saving the replacement time of the mechanical seal.

[0015] In summary, the utility model has the following beneficial technical effects:

[0016] 1. The device is provided with a mechanical seal, a joint plate and a bracket assembly. The mechanical seal is directly connected to the bracket assembly through the joint plate, thereby reducing the connection of a pressure relief cover, reducing excessive matching, thereby reducing the difficulty of matching, and improving the matching accuracy, which is conducive to making the matching accuracy of the entire connection process meet the requirements of the mechanical seal. At the same time, the mechanical seal is detachably connected by bolts, which is convenient for replacing the mechanical seal and is conducive to improving the maintenance speed of the porcelain slag slurry pump;

[0017] 2. The device is provided with cavity one, cavity two and a cooling water pipe. At the same time, cavity one of the mechanical seal and cavity two between the joint plate and the ceramic rear guard plate are connected with cooling water pipes. Flushing water is injected into cavity one and cavity two to ensure that the mechanical seal has a better cooling effect. At the same time, the flushing water enters the interior of the ceramic pump body assembly through cavity two, and then mixes with the ore slurry output by the ceramic impeller, reducing the concentration of the ore slurry in cavity two, so that the mechanical seal is in a better operating environment, which is beneficial to extending the service life of the mechanical seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a mechanical seal ceramic slurry pump of the utility model;

[0019] Figure 2 yes Figure 1 A is an enlarged schematic diagram of the local structure at center A;

[0020] Figure 3 yes Figure 1 A magnified schematic diagram of the local structure at B in the middle;

[0021] Figure 4 yes Figure 1 A magnified schematic diagram of the local structure at C in the middle;

[0022] Figure 5 yes Figure 1 Enlarged schematic diagram of the local structure at point D in the middle.

[0023] Description of reference numerals:

[0024] 1. Joint plate; 2. Ceramic rear guard plate; 3. Cooling water pipe;

[0025] 4. Mechanical seal; 41. Convex plate; 5. Sealing sleeve;

[0026] 6. Bracket assembly; 7. Ceramic pump body assembly;

[0027] 8. Ceramic impeller; 9. Sealing rubber ring. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-Figure 5 The utility model is described in further detail.

[0029] The utility model embodiment discloses a mechanical seal type ceramic slurry pump.

[0030] Reference Figure 1 , Figure 2, including a bracket assembly 6, a ceramic pump body component 7, a ceramic impeller 8, a number of bolts and a number of screws. The bracket assembly 6 includes parts such as a bracket, a main shaft, and a transmission bearing. The outer surface of the main shaft is rotatably connected to the inside of the bracket assembly 6 and the inside of the ceramic pump body component 7. One end of the main shaft is fixedly connected to one side of the ceramic impeller 8. When the pump is working, the flushing water enters the inside of the ceramic pump body component 7 through the cavity 2, and then mixes with the slurry output by the ceramic impeller 8 to reduce the concentration of the slurry. The ceramic impeller 8 is located inside the ceramic pump body component 7. One side of the ceramic pump body component 7 is connected to one side of the connecting plate 1 through corresponding bolts. One side of the connecting plate 1 is connected to one side of the ceramic rear guard plate 2 through corresponding bolts. Sealing rubber rings 9 are installed between the connecting plate 1 and the ceramic rear guard plate 2, and between the ceramic rear guard plate 2 and the ceramic pump body component 7. The gap between the connecting plate 1 and the ceramic rear guard plate 2, and between the ceramic rear guard plate 2 and the ceramic pump body component 7 The gaps all play a sealing role. The outer surface of the main shaft is fixedly connected with a sealing sleeve 5, and a part of screws penetrate the mechanical seal 4 and are clamped on the outer surface of the sealing sleeve 5. The mechanical seal 4 is connected to the inner hole of the connecting plate 1 by bolts. The traditional slurry pump needs a pressure reducing cover to connect the mechanical seal 4 with the connecting plate 1 or the ceramic pump body assembly 7, and the connecting plate 1 and the ceramic pump body assembly 7 are further connected to the bracket assembly 6. In this device, the mechanical seal 4 is directly connected to the sealing sleeve 5 and the connecting plate 1 by bolts, that is, the mechanical seal 4 is connected to the bracket assembly 6 through the sealing sleeve 5, and the mechanical seal 4 is directly connected to the ceramic pump body assembly 7 through the connecting plate 1, thereby reducing the connection of a pressure reducing cover, reducing excessive matching, thereby reducing the difficulty of matching, and improving the matching accuracy, which is conducive to making the matching accuracy of the entire connection process meet the requirements of the mechanical seal 4. At the same time, the mechanical seal 4 can be directly removed without disassembling the connecting plate 1, which is convenient for replacing the mechanical seal 4.

[0031] Reference Figure 1 , Figure 3 , Figure 4 The top of the mechanical seal 4 and the side wall of the joint plate 1 are fixedly connected with a cooling water pipe 3. Figure 3 and Figure 4 By comparison, it can be seen that the top of the mechanical seal 4 and the ceramic rear guard plate 2 located above the mechanical seal 4 are installed with cooling water pipes 3, and there is no cooling water pipe 3 under the main shaft.

[0032] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5A cavity 1 is opened inside the mechanical seal 4, and flushing water enters the cavity 1 to cool the inside of the mechanical seal 4, that is, the dynamic ring seat part of the mechanical seal 4 is cooled preferentially. The mechanical seal 4 includes a convex plate 41, and the convex plate 41 is located in the cavity 2 formed by the connecting plate 1 and the ceramic rear guard plate 2. The bottom of the connecting plate 1 overlaps the outer surface of the mechanical seal 4, and a part of the bolts penetrate the connecting plate 1 and are threadedly connected to the inside of the convex plate 41. The mechanical seal 4 is directly connected to the connecting plate 1 and the sealing sleeve 5 by bolts, and sealing rubber rings 9 are installed between the mechanical seal 4 and the connecting plate 1 and the sealing sleeve 5, respectively, to enhance the sealing between the mechanical seal 4 and the connecting plate 1 and the sealing sleeve 5.

[0033] Reference Figure 1 , Figure 3 A cavity 2 is provided between the joint plate 1 and the ceramic rear guard plate 2, and the convex plate 41 is located inside the cavity 2. The cavity 1 and the cavity 2 are used to contain flushing water.

[0034] Reference Figure 1 , Figure 3 The interiors of the two cooling water pipes 3 are respectively connected with the interiors of cavity one and cavity two, and the flushing water is injected into the interiors of cavity one and cavity two through the cooling water pipes 3. The flushing water of cavity one can cool the mechanical seal 4 and reduce the slurry concentration at the same time, thereby avoiding the failure of the dynamic ring seat of the mechanical seal 4 due to excessive wear, which is beneficial to improving the service life of the mechanical seal 4.

[0035] Reference Figure 1 The sealing sleeve 5 is located between the bracket assembly 6 and the ceramic pump body assembly 7. The sealing sleeve 5 protects the main shaft. The sealing sleeve 5 is connected to a sealing rubber ring 9 only at one end of the ceramic impeller 8. The sealing sleeve 5 cooperates with the mechanical seal and the connecting plate to form a closed cavity that can accommodate flushing water, thereby preventing the flushing water from contacting the main shaft and contaminating the main shaft.

[0036] Reference Figure 1 , Figure 3 , Figure 5 The ceramic rear guard plate 2 is located between the connecting plate 1 and the ceramic pump body assembly 7. When the flushing water is injected into the cavity 2 through the cooling water connecting pipe 3 on the connecting plate 1, the inner wall of the ceramic pump body assembly 7 is protected by the ceramic rear guard plate 2. At the same time, it is convenient to remove the mechanical seal after removing the pump body assembly, ceramic impeller and ceramic rear guard plate when repairing the pump, thereby saving the replacement time of the mechanical seal.

[0037] The implementation principle of a mechanical seal ceramic slurry pump in the embodiment of the utility model is:

[0038] 1. The mechanical seal 4 and the bracket assembly 6 are directly connected by bolts through the joint plate 1, so that the assembly accuracy of the mechanical seal 4 can be well controlled. At the same time, the cavity 1 of the mechanical seal 4 and the cavity 2 between the joint plate 1 and the ceramic rear guard plate 2 are connected with a cooling water pipe 3, and the interiors of the cavity 1 and the cavity 2 are injected with flushing water, so as to ensure that the mechanical seal 4 has a better cooling effect and reduce the slurry concentration as much as possible, so that the mechanical seal 4 is in a better operating environment;

[0039] 2. The convex plate 41 of the mechanical seal 4 is installed on the right side of the connecting plate 1, so that when replacing the mechanical seal 4, there is no need to remove the connecting plate 1. Only the corresponding bolts need to be removed to separate the mechanical seal 4 and the connecting plate 1, which greatly improves the maintenance speed of the porcelain slag slurry pump.

[0040] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A mechanical seal ceramic slurry pump, characterized in that: The invention comprises a bracket assembly (6), a ceramic pump body assembly (7), a ceramic impeller (8), a plurality of bolts and a plurality of screws, wherein the bracket assembly (6) comprises a bracket, a main shaft and a transmission bearing, the outer surface of the main shaft is rotatably connected to the inside of the bracket assembly (6) and the inside of the ceramic pump body assembly (7), one end of the main shaft is fixedly connected to one side of the ceramic impeller (8), the ceramic impeller (8) is located inside the ceramic pump body assembly (7), one side of the ceramic pump body assembly (7) is connected to one side of a joint plate (1) through corresponding bolts, one side of the joint plate (1) is connected to one side of a ceramic rear guard plate (2) through corresponding bolts, the outer surface of the main shaft is fixedly connected to a sealing sleeve (5), wherein a part of the screws penetrates a mechanical seal (4) and is clamped to the outer surface of the sealing sleeve (5), and the mechanical seal (4) is connected to the inner hole of the joint plate (1) through bolts.

2. A mechanical seal ceramic slurry pump according to claim 1, characterized in that: The top of the mechanical seal (4) and the side wall of the joint plate (1) are both fixedly connected with a cooling water connecting pipe (3).

3. A mechanical seal ceramic slurry pump according to claim 2, characterized in that: A cavity is provided inside the mechanical seal (4), and the mechanical seal (4) comprises a convex plate (41). The bottom of the connecting plate (1) overlaps the outer surface of the mechanical seal (4), and a portion of the bolts penetrates the connecting plate (1) and is threadedly connected to the inside of the convex plate (41).

4. A mechanical seal ceramic slurry pump according to claim 3, characterized in that: A second cavity is provided between the joining plate (1) and the ceramic rear guard plate (2), and the convex plate (41) is located inside the second cavity.

5. A mechanical seal ceramic slurry pump according to claim 4, characterized in that: The interiors of the two cooling water connecting pipes (3) are respectively connected to the interior of cavity one and the interior of cavity two.

6. A mechanical seal ceramic slurry pump according to claim 5, characterized in that: The ceramic rear guard plate (2) is located between the joint plate (1) and the ceramic pump body assembly (7).

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