Sealing structure of submersible mixer

Abstract

The sealing structure comprises a machine shell and a driving assembly, a sealing mechanism is arranged in the machine shell, the sealing mechanism comprises a sealing body fixedly installed on the inner wall of the left side of the machine shell, a first sealing ring is fixedly installed in the sealing body, and a second sealing ring is fixedly installed in the sealing body. And two electric telescopic rods are fixedly mounted in the sealing body. Under the action of the sealing structure, the sealing body, the electric telescopic rod and the pressing plate of the submersible mixer, the pressing plate provides certain external thrust for the first sealing ring through the thrust of the electric telescopic rod, so that the first sealing ring is tightly attached to the peripheral wall of the rotating shaft, and the abrasion loss between the first sealing ring and the rotating shaft is compensated; meanwhile, through the action of a bearing, a second sealing ring and a connecting ring, the submersible mixer is installed in the rotary drum, the sealing performance between the machine shell and the rotary shaft is improved, and external water is made to be difficult to enter the interior of the machine shell.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing of submersible mixers, in particular to a sealing structure of a submersible mixer. Background Art

[0002] Submersible mixers, also known as submersible thrusters, are suitable for promoting and stirring sewage, sludge, industrial process liquids, etc. containing suspended matter in the process flow of sewage treatment plants, creating water flow, enhancing the stirring function, and preventing sludge sedimentation. They are important equipment in the process flow of municipal and industrial sewage treatment.

[0003] At present, the shaft will rotate at high speed on the inner wall of the sealing ring. After long-term use, the submersible mixer will cause wear between the sealing ring and the shaft, resulting in a lack of close contact and affecting the sealing. Water can be easily squeezed into the interior of the shell through water pressure, thereby affecting the working efficiency of the submersible mixer. A sealing structure for a submersible mixer. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a sealing structure for a submersible mixer, which has the advantages of improving the sealing performance of the submersible mixer, etc., and solves the problem of wear between the sealing ring and the rotating shaft, resulting in the inability to make close contact and affecting the sealing performance, and water is easily squeezed into the interior of the shell through water pressure, thereby affecting the working efficiency of the submersible mixer.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sealing structure of a submersible mixer, comprising a casing and a driving assembly, wherein a sealing mechanism is provided inside the casing;

[0006] The sealing mechanism includes a sealing body fixedly mounted on the left inner wall of the casing, a first sealing ring fixedly mounted inside the sealing body, two electric telescopic rods fixedly mounted inside the sealing body, a pressure plate fixedly mounted on the outer wall on the opposite side of the telescopic shaft of the two electric telescopic rods, a rubber ring fixedly mounted on the outer wall of the telescopic shaft of the electric telescopic rod, a bearing fixedly mounted on the left outer wall of the casing, a second sealing ring fixedly mounted on the left outer wall of the bearing, a connecting ring rotatably connected to the left outer wall of the second sealing ring, and two mounting rods fixedly mounted on the outer wall of the connecting ring.

[0007] Furthermore, the drive assembly includes a drive motor fixedly mounted inside the casing, the output shaft of the drive motor is fixedly mounted with a rotating shaft, the connecting ring is fixedly mounted on the outer peripheral wall of the rotating shaft, the outer peripheral wall of the rotating shaft is fixedly mounted with a rotating drum, and the outer peripheral wall of the rotating drum is fixedly mounted with impeller blades.

[0008] Furthermore, two rectangular grooves are provided inside the rotating drum, and the mounting rods are fixedly mounted inside the rectangular grooves and have sizes that match the grooves.

[0009] Furthermore, the rotating shaft is rotatably connected to the outer peripheral walls of the first sealing ring and the second sealing ring and has a matching size.

[0010] Furthermore, the first sealing ring is in a semicircular shape, and two of the first sealing rings form a circular ring which is sleeved on the outer peripheral wall of the first sealing ring and has a matching size.

[0011] Furthermore, a circular groove is provided on the right inner wall of the rotating drum, and the bearing, the second sealing ring and the connecting ring have the same diameter and are all located inside the circular groove.

[0012] Furthermore, a cable head is fixedly mounted on the top inner wall of the casing, a mounting ring is fixedly mounted on the outer peripheral wall of the casing, and a hanging ring is fixedly mounted on the outer peripheral wall of the mounting ring.

[0013] Furthermore, a sealing seat is fixedly mounted on the left outer wall of the casing.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] The sealing structure of the submersible mixer, the sealing body, the electric telescopic rod and the pressure plate enable the pressure plate to provide a certain external thrust to the first sealing ring through the thrust of the electric telescopic rod, so that the first sealing ring fits tightly against the outer peripheral wall of the rotating shaft, and the wear between the first sealing ring and the rotating shaft is compensated, thereby improving the sealing performance of the submersible mixer. At the same time, through the action of the bearing, the second sealing ring and the connecting ring and being installed inside the rotating drum, the sealing performance between the casing and the rotating shaft is improved, making it difficult for external water to enter the interior of the casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 For this utility model Figure 1 Structural diagram;

[0018] Figure 3 This is a schematic diagram of the structure of the right side of the pressing plate of the utility model;

[0019] Figure 4 This is a schematic diagram of the sealing seat structure of the utility model.

[0020] In the figure: 1. casing; 2. driving assembly; 201. driving motor; 202. rotating shaft; 203. rotating drum; 204. impeller; 3. cable head; 4. mounting ring; 5. lifting ring; 6. sealing body; 7. first sealing ring; 8. electric telescopic rod; 9. pressing plate; 10. bearing; 11. second sealing ring; 12. connecting ring; 13. mounting rod; 14. rubber ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] For example, see Figure 1-4 A sealing structure of a submersible mixer in this embodiment includes a casing 1 and a driving assembly 2, and a sealing mechanism is provided inside the casing 1.

[0023] A cable head 3 is fixedly mounted on the top inner wall of the casing 1 , a mounting ring 4 is fixedly mounted on the outer peripheral wall of the casing 1 , and a hanging ring 5 is fixedly mounted on the outer peripheral wall of the mounting ring 4 .

[0024] The sealing mechanism includes a sealing body 6 fixedly mounted on the left inner wall of the casing 1, a first sealing ring 7 is fixedly mounted inside the sealing body 6, the first sealing ring 7 is semicircular, two first sealing rings 7 form a circular ring sleeved on the outer peripheral wall of the first sealing ring 7 and are of the same size, two electric telescopic rods 8 are fixedly mounted inside the sealing body 6, a pressure plate 9 is fixedly mounted on the outer wall of the opposite side of the telescopic shaft of the two electric telescopic rods 8, a rubber ring 14 is fixedly mounted on the outer wall of the telescopic shaft of the electric telescopic rod 8, a bearing 10 is fixedly mounted on the outer wall of the left side of the casing 1, a second sealing ring 11 is fixedly mounted on the outer wall of the left side of the bearing 10, a connecting ring 12 is rotatably connected to the outer wall of the second sealing ring 11, and two mounting rods 13 are fixedly mounted on the outer peripheral wall of the connecting ring 12.

[0025] The driving assembly 2 includes a driving motor 201 fixedly installed inside the casing 1, and the output shaft of the driving motor 201 is fixedly installed with a rotating shaft 202, and the rotating shaft 202 is rotatably connected to the outer peripheral wall of the first sealing ring 7 and the second sealing ring 11 and the size is adapted, the connecting ring 12 is fixedly installed on the outer peripheral wall of the rotating shaft 202, and the outer peripheral wall of the rotating shaft 202 is fixedly installed with a rotating drum 203, and the interior of the rotating drum 203 is provided with two rectangular grooves, and the mounting rod 13 is fixedly installed inside the rectangular groove and the size is adapted, and the right inner wall of the rotating drum 203 is provided with a circular groove, the bearing 10, the second sealing ring 11 and the connecting ring 12 have the same diameter and are all located inside the circular groove, and the outer peripheral wall of the rotating drum 203 is fixedly installed with an impeller blade 204.

[0026] In this embodiment, the right outer wall of the bearing 10 is in close contact with the left outer wall of the casing 1, so that the connection between the rotating shaft 202 and the casing 1 provides a certain degree of sealing. The second sealing ring 11 makes it difficult for water to squeeze into the interior of the drum 203, thereby improving the sealing.

[0027] In this embodiment, the mounting rod 13 is mounted inside the rotating drum 203 , which improves the stability of the installation of the rotating drum 203 .

[0028] In this embodiment, the mounting ring 4 and the lifting ring 5 are connected with the steel wire rope to prevent the submersible mixer from falling into the silt of the tank body.

[0029] In this embodiment, the rubber ring 14 seals the interior of the sealing body 6 , thereby improving the sealing performance of the interior of the sealing body 6 .

[0030] The working principle of the above embodiment is:

[0031] When the driving motor 201 rotates, the shaft 202 synchronously drives the drum 203 and the impeller blades 204 to rotate through the action of the connecting ring 12 and the mounting rod 13. At this time, the connection between the drum 203 and the casing 1 is sealed through the action of the bearing 10 and the second sealing ring 11, and it is difficult for external water to enter the interior through the connection between the casing 1 and the shaft 202. When the first sealing ring 7 has worked for a certain period of time, the electric telescopic rod 8 drives the pressure plate 9 to move toward and fit the outer peripheral wall of the first sealing ring 7. At this time, when the first sealing ring 7 is pushed by an external force, it may change the contact stress between it and the outer peripheral wall of the shaft 202, thereby reducing local wear.

[0032] For example 2, please refer to Figure 4 On the basis of the first embodiment, a sealing seat is provided, and the sealing performance of the connection between the drum 203 and the casing 1 is further improved through the effect of the sealing seat, thereby improving the overall sealing performance.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sealing structure for a submersible mixer, comprising a housing (1) and a drive assembly (2), Features: A sealing mechanism is provided inside the casing (1); The sealing mechanism comprises a sealing body (6) fixedly mounted on the left inner wall of the housing (1), a first sealing ring (7) fixedly mounted inside the sealing body (6), two electric telescopic rods (8) fixedly mounted inside the sealing body (6), a pressure plate (9) fixedly mounted on the outer wall on the opposite side of the telescopic shaft of the two electric telescopic rods (8), a rubber ring (14) fixedly mounted on the outer wall of the telescopic shaft of the electric telescopic rod (8), a bearing (10) fixedly mounted on the left outer wall of the housing (1), a second sealing ring (11) fixedly mounted on the left outer wall of the bearing (10), a connecting ring (12) rotatably connected to the left outer wall of the second sealing ring (11), and two mounting rods (13) fixedly mounted on the outer wall of the connecting ring (12).

2. A sealing structure for a submersible mixer according to claim 1, Features: The driving assembly (2) comprises a driving motor (201) fixedly mounted inside the casing (1); a rotating shaft (202) is fixedly mounted on the output shaft of the driving motor (201); the connecting ring (12) is fixedly mounted on the outer peripheral wall of the rotating shaft (202); a rotating drum (203) is fixedly mounted on the outer peripheral wall of the rotating shaft (202); and an impeller blade (204) is fixedly mounted on the outer peripheral wall of the rotating drum (203).

3. A sealing structure for a submersible mixer according to claim 2, Features: Two rectangular grooves are provided inside the rotating drum (203), and the mounting rod (13) is fixedly mounted inside the rectangular grooves and has a matching size.

4. The sealing structure of a submersible mixer according to claim 2, Features: The rotating shaft (202) is rotatably connected to the outer peripheral walls of the first sealing ring (7) and the second sealing ring (11) and has a matching size.

5. The sealing structure of a submersible mixer according to claim 1, Features: The first sealing ring (7) is semicircular in shape, and two of the first sealing rings (7) form a circular ring which is sleeved on the outer peripheral wall of the first sealing ring (7) and has a matching size.

6. The sealing structure of a submersible mixer according to claim 2, Features: A circular groove is provided on the right inner wall of the rotating drum (203); the bearing (10), the second sealing ring (11) and the connecting ring (12) have the same diameter and are all located inside the circular groove.

7. The sealing structure of a submersible mixer according to claim 1, Features: A cable head (3) is fixedly mounted on the top inner wall of the casing (1), a mounting ring (4) is fixedly mounted on the outer peripheral wall of the casing (1), and a lifting ring (5) is fixedly mounted on the outer peripheral wall of the mounting ring (4).

8. The sealing structure of a submersible mixer according to claim 1, Features: A sealing seat is fixedly mounted on the left outer wall of the casing (1).

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