Assembly type mechanical seal for chemical pump

Abstract

The assembly type mechanical seal for the chemical pump comprises a shell and a rotating shaft, the rotating shaft is rotationally connected with the interior of the shell through a bearing, a protective sleeve is arranged on one side of the shell, a through opening is formed in one side of the protective sleeve, a first bolt is arranged on the protective sleeve in a penetrating mode, and a second bolt is arranged on the first bolt. The protective sleeve is connected with the shell through a first bolt, a sealing seat and a sealing sleeve are arranged in the protective sleeve and located outside the rotating shaft, a first circular ring sealing gasket is arranged in the through opening, the inner ring of the first circular ring sealing gasket makes contact with the outer surface of the rotating shaft, and second bolts penetrate through the top and the bottom of the protective sleeve in a threaded mode. And a limiting hole corresponding to the second bolt is formed outside the sealing seat. By means of the arrangement, assembly of the mechanical seal can be rapidly completed, the sealing performance between the rotating shaft and the shell can be improved, liquid in the chemical pump is prevented from leaking from a gap between the shell and the rotating shaft, and stable transportation of materials is guaranteed.

Description

Technical Field

[0001] The utility model relates to an assembled mechanical seal for a chemical pump. Background Art

[0002] A chemical pump is a chemical equipment specially used for transporting liquids. Its working principle is based on the rotation of the impeller. The liquid is thrown from the center of the impeller to the outer edge through the action of centrifugal force, thereby achieving continuous transportation of the liquid.

[0003] A chemical pump includes a chemical pump housing and a rotating shaft rotatably connected to the chemical pump housing. The existing chemical pump housing and the rotating shaft are often only rotatably connected by bearings, and the sealing effect is poor. When the chemical pump works for a long time or under high load, the liquid in the chemical pump is prone to leak from the gap between the housing and the rotating shaft due to sealing problems, which will not only waste resources but also cause environmental pollution.

[0004] Therefore, it is necessary to provide an assembled mechanical seal for a chemical pump to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide an assembled mechanical seal for a chemical pump, so as to solve the problems raised in the above background technology.

[0006] In order to solve the above problems, the present invention adopts the following technical solutions:

[0007] A assembled mechanical seal for a chemical pump comprises a shell and a rotating shaft, wherein the rotating shaft is rotatably connected to the inside of the shell through a bearing, a protective sleeve is provided on one side of the shell, a through opening is provided on one side of the protective sleeve, a first bolt is passed through the protective sleeve, and the protective sleeve is connected to the shell through the first bolt, a sealing seat and a sealing sleeve are provided inside the protective sleeve and outside the rotating shaft, a first annular sealing gasket is provided in the through opening, the inner ring of the first annular sealing gasket is in contact with the outer surface of the rotating shaft, a second bolt is threaded through the top and bottom of the protective sleeve, a limiting hole is provided outside the sealing seat and corresponding to the second bolt, and the limiting hole can be used for the second bolt to be inserted.

[0008] Preferably, the inner surface of the sealing seat is in contact with the outer surface of the rotating shaft, and the inner surface of the sealing sleeve is provided with a sealing rubber ring, and the inner surface of the sealing rubber ring is in close contact with the outer surface of the rotating shaft.

[0009] Preferably, a second annular sealing gasket is provided on one end surface of the sealing sleeve, and the second annular sealing gasket is tightly against the housing.

[0010] Preferably, the top and bottom of the inner wall of the protective sleeve are provided with connecting blocks, and the two connecting blocks are provided with limiting strips at opposite ends. The top and bottom of the sealing sleeve are provided with limiting grooves, and the outer surface of the limiting strip fits with the inner surface of the limiting groove.

[0011] Preferably, four first bolts are provided, and the four first bolts are respectively distributed on four sides of the outside of the protective sleeve.

[0012] The beneficial effects of the present invention are as follows: the sealing sleeve is placed into the protective sleeve from the right side of the protective sleeve, and the positioning work of the sealing sleeve in the protective sleeve can be completed by the two limiting strips and the limiting groove. The fixing process of the sealing seat is completed by the protective sleeve, the through port, the rotating shaft, the first bolt, the sealing seat, the second bolt, and the limiting hole. Finally, the first annular sealing gasket is inserted into the through port so as to quickly and easily complete the assembly work of the mechanical seal. At this time, the second annular sealing gasket is tightly against the shell to ensure the sealing between the sealing sleeve and the shell. The inner surface of the sealing rubber ring is tightly against the outer surface of the rotating shaft to improve the sealing between the rotating shaft and the sealing sleeve. The inner surface of the sealing seat is fitted with the outer surface of the rotating shaft to improve the sealing between the rotating shaft and the protective sleeve. The inner ring of the first annular sealing gasket is in contact with the outer surface of the rotating shaft to further improve the sealing of the rotating shaft in the protective sleeve, which is beneficial to improving the sealing between the rotating shaft and the shell to avoid the liquid in the chemical pump from leaking from the gap between the shell and the rotating shaft, thereby ensuring the stable transportation of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art, but this does not limit the scope of protection of the present invention.

[0014] Figure 1 A schematic diagram of the overall structure provided by the utility model;

[0015] Figure 2 A schematic diagram of the internal structure of the protective sleeve provided by the utility model;

[0016] Figure 3 This is a left side view of the sealing sleeve provided by the utility model.

[0017] Among them, 1. Shell; 2. Rotating shaft; 3. Protective sleeve; 4. Through port; 5. First bolt; 6. Sealing seat; 7. Sealing sleeve; 8. First circular sealing gasket; 9. Second bolt; 10. Sealing rubber ring; 11. Second circular sealing gasket; 12. Connecting block; 13. Limiting strip; 14. Limiting groove. DETAILED DESCRIPTION

[0018] See Figures 1 to 3The shown assembly mechanical seal for a chemical pump includes a shell 1 and a rotating shaft 2. The rotating shaft 2 is rotatably connected to the inside of the shell 1 through a bearing. A protective sleeve 3 is provided on one side of the shell 1, and a through port 4 is provided on one side of the protective sleeve 3. A first bolt 5 is passed through the protective sleeve 3, and the protective sleeve 3 is connected to the shell 1 through the first bolt 5. A sealing seat 6 and a sealing sleeve 7 are provided inside the protective sleeve 3 and outside the rotating shaft 2. A first annular sealing gasket 8 is provided in the through port 4, and the inner ring of the first annular sealing gasket 8 is in contact with the outer surface of the rotating shaft 2. A second bolt 9 is threaded through the top and bottom of the protective sleeve 3, and a limiting hole is provided outside the sealing seat 6 and corresponding to the second bolt 9. The limiting hole can be used for the second bolt 9 to be inserted.

[0019] Furthermore, the inner surface of the sealing seat 6 is in contact with the outer surface of the rotating shaft 2 , and the inner surface of the sealing sleeve 7 is provided with a sealing rubber ring 10 , and the inner surface of the sealing rubber ring 10 is in close contact with the outer surface of the rotating shaft 2 .

[0020] The inner surface of the sealing rubber ring 10 is tightly against the outer surface of the rotating shaft 2, thereby improving the sealing between the rotating shaft 2 and the sealing sleeve 7. The inner surface of the sealing seat 6 is in contact with the outer surface of the rotating shaft 2, thereby improving the sealing between the rotating shaft 2 and the protective sleeve 3.

[0021] Furthermore, a second annular sealing gasket 11 is provided on one end surface of the sealing sleeve 7 , and the second annular sealing gasket 11 is tightly against the housing 1 .

[0022] The second annular sealing gasket 11 is tightly against the housing 1 to ensure the sealing between the sealing sleeve 7 and the housing 1 .

[0023] Furthermore, connecting blocks 12 are provided at the top and bottom of the inner wall of the protective sleeve 3, and limiting strips 13 are provided at the opposite ends of the two connecting blocks 12. Limiting grooves 14 are provided at the top and bottom of the sealing sleeve 7, and the outer surface of the limiting strip 13 fits with the inner surface of the limiting groove 14.

[0024] The two limit strips 13 are respectively inserted into the two limit grooves 14 to complete the positioning of the sealing sleeve 7 in the protective sleeve 3, and the sealing sleeve 7 is pressed between the sealing seat 6 and the shell 1 to ensure the stability of the position of the sealing sleeve 7, so as to avoid the sealing sleeve 7 from rotating when the rotating shaft 2 rotates, thereby ensuring the sealing of the rotating shaft 2 in the protective sleeve 3.

[0025] Furthermore, four first bolts 5 are provided, and the four first bolts 5 are respectively distributed on four sides of the exterior of the protective sleeve 3 .

[0026] The four first bolts 5 are provided to ensure the firmness of the connection between the protective sleeve 3 and the housing 1 .

[0027] When the present invention is used, first, the sealing sleeve 7 is placed into the inside of the protective sleeve 3 from the right side of the protective sleeve 3, so that the two limit strips 13 are respectively inserted into the two limit grooves 14, and the positioning work of the sealing sleeve 7 in the protective sleeve 3 is completed. Then, the protective sleeve 3 is sleeved on the outside of the rotating shaft 2 through the through port 4. At this time, the sealing sleeve 7 is also sleeved on the outside of the rotating shaft 2, and the protective sleeve 3 is fixedly installed on one side of the housing 1 by the first bolt 5. Then, the sealing seat 6 is sleeved on the outside of the rotating shaft 2 through the through port 4, and the second bolts 9 on both sides are rotated to make them insert into the corresponding limit holes to complete the fixing process of the sealing seat 6. Finally, the first annular sealing gasket 8 is inserted into the through port 4 to complete the mechanical seal. During the installation work, the second circular sealing gasket 11 is tightly against the shell 1 to ensure the sealing between the sealing sleeve 7 and the shell 1. The inner surface of the sealing rubber ring 10 is tightly against the outer surface of the rotating shaft 2, which improves the sealing between the rotating shaft 2 and the sealing sleeve 7. The inner surface of the sealing seat 6 fits with the outer surface of the rotating shaft 2 to improve the sealing between the rotating shaft 2 and the protective sleeve 3. The inner ring of the first circular sealing gasket 8 contacts the outer surface of the rotating shaft 2 to further improve the sealing of the rotating shaft 2 in the protective sleeve 3, which is beneficial to improve the sealing between the rotating shaft 2 and the shell 1 to avoid the liquid in the chemical pump from leaking from the gap between the shell 1 and the rotating shaft 2, thereby ensuring the stable transportation of materials.

[0028] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that do not require creative work should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection defined in the claims.

Claims

1. An assembled mechanical seal for a chemical pump, characterized by: It includes a shell and a rotating shaft, which is rotatably connected to the inside of the shell through a bearing, a protective sleeve is provided on one side of the shell, a through opening is provided on one side of the protective sleeve, a first bolt is passed through the protective sleeve, and the protective sleeve is connected to the shell through the first bolt, a sealing seat and a sealing sleeve are provided inside the protective sleeve and outside the rotating shaft, a first annular sealing gasket is provided in the through opening, the inner ring of the first annular sealing gasket is in contact with the outer surface of the rotating shaft, a second bolt is threaded through the top and bottom of the protective sleeve, a limiting hole is provided outside the sealing seat and corresponding to the second bolt, and the limiting hole can be used for the second bolt to be inserted.

2. The assembled mechanical seal for a chemical pump according to claim 1, characterized in that: The inner surface of the sealing seat is in contact with the outer surface of the rotating shaft. The inner surface of the sealing sleeve is provided with a sealing rubber ring. The inner surface of the sealing rubber ring is in close contact with the outer surface of the rotating shaft.

3. The assembled mechanical seal for a chemical pump according to claim 1, characterized in that: A second annular sealing gasket is provided on one end surface of the sealing sleeve, and the second annular sealing gasket is tightly against the shell.

4. The assembled mechanical seal for a chemical pump according to claim 1, characterized in that: The top and bottom of the inner wall of the protective sleeve are both provided with connecting blocks, and the two connecting blocks are both provided with limiting strips at opposite ends. The top and bottom of the sealing sleeve are both provided with limiting grooves, and the outer surface of the limiting strip fits with the inner surface of the limiting groove.

5. The assembled mechanical seal for a chemical pump according to claim 1, characterized in that: There are four first bolts, which are respectively distributed on four sides of the exterior of the protective sleeve.

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