Mechanical sealing device for sewage pump

Abstract

The utility model discloses a mechanical sealing device for a sewage pump, which comprises a mounting cylinder, a partition plate fixedly connected in the mounting cylinder, a motor and a pump body fixedly connected to the lower inner wall of the mounting cylinder, a driving shaft fixedly connected to the output end of the motor, the driving shaft is sleeved with the partition plate, and an impeller and a first mounting ring are fixedly connected to the side end of the driving shaft. A first sealing ring is arranged at the rear end of the first mounting ring, and the impeller is located in the pump body. The assembly type sealing mechanism is formed by combining the mounting cylinder, the partition plate, the driving shaft, the water conveying pipe, the mounting ring, the sealing ring, the bolt and the nut, the structure is firm and stable, all directions are strictly sealed to prevent sewage leakage, and the sealing performance of the device is enhanced; the device is simple in assembling structure, convenient to disassemble and assemble and beneficial to overhaul and maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a mechanical seal device for a sewage pump. Background Art

[0002] When the existing mechanical seal device for sewage pump seals the sewage pump, the installation structure of the sealing component and the installation component is complex, the sealing performance is average, and the coordination with the sewage pump is poor, which is not conducive to the stable operation of the sewage pump; the assembly structure is complex, not easy to install and disassemble, and is not conducive to the inspection and maintenance of the device. A Chinese patent discloses a "mechanical seal device for sewage pump", and its application number is "CN201921309680.X", which includes a fixed shaft, one end of the fixed shaft is connected to the second sealing device through a connecting thread, the second sealing device is provided with a first sealing ring at the contact point with the fixed shaft, the other end of the fixed shaft is provided with a dynamic ring seat, and the second sealing device is provided with a fixed seat, and the fixed seat is fixed to the second sealing device through a wedge block, and the fixed seat is fixed to the connecting block and the fixed block through a hexagon socket bolt. The utility model of the mechanical seal device for sewage pump strengthens the sealing effect between the sealing components of the pump body, so that the fixed shaft of the pump body can have good sealing performance when rotating, and the mechanical seal device can be firmly fixed together, which improves the reliability of the connection between the various components during rotation and avoids the occurrence of deviation, which is more practical. However, the installation structure of the sealing component and the installation component of the device will affect the operation of the sewage pump, which is not conducive to the transportation of sewage; the assembly structure of the device is complicated, not easy to disassemble and assemble, and is not conducive to inspection and maintenance. Utility Model Content

[0003] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a mechanical sealing device for a sewage pump. An assembled sealing mechanism is formed by a combination of an installation cylinder, a partition, a drive shaft, a water pipe, a mounting ring, a sealing ring, bolts and nuts. The structure is firm and stable, and strict sealing is performed in all directions to prevent leakage of sewage. The sealing performance of the device is enhanced. The assembly structure of the device is simple and disassembly and assembly are convenient, which is conducive to the inspection and maintenance of the device.

[0004] The utility model also provides a mechanical sealing device for a sewage pump as described above, comprising: a mounting cylinder, a partition plate is fixedly connected inside the mounting cylinder, a motor and a pump body are fixedly connected to the lower inner wall of the mounting cylinder, a driving shaft is fixedly connected to the output end of the motor, the driving shaft is sleeved with the partition plate, an impeller and a first mounting ring are fixedly connected to the side end of the driving shaft, a first sealing ring is arranged at the rear end of the first mounting ring, and the impeller is located inside the pump body; a water pipe, the water pipe is fixedly connected to the side end of the pump body, the water pipe is sleeved with the mounting cylinder, the water pipe is symmetrically distributed at the left and right ends of the pump body, a second mounting ring is fixedly connected to the side end of the water pipe, a second sealing ring is arranged at one end of the second mounting ring close to the pump body, and the second mounting ring is fixedly connected to the mounting cylinder by bolts and nuts.

[0005] According to the mechanical seal device for sewage pump described in the utility model, the lower end of the mounting cylinder is fixedly connected with a roller to improve the flexibility of the device. The roller is located at the four corners of the lower end of the mounting cylinder to make the device stable.

[0006] According to the mechanical seal device for sewage pump described in the utility model, the upper end of the mounting cylinder is rotatably connected to a cover plate through a rotating shaft, which is dustproof and waterproof. The upper end of the cover plate is fixedly connected to a buckle to improve the stability of the cover plate closing.

[0007] According to the mechanical seal device for a sewage pump described in the utility model, a slot is provided at the upper end of the mounting cylinder to improve the stability of the cover plate closure. An unlocking button is provided at the front end of the mounting cylinder to improve the convenience of using the device.

[0008] According to the mechanical seal device for sewage pump of the utility model, the side end of the mounting cylinder is provided with a first threaded hole to facilitate the installation of bolts. The first threaded holes are symmetrically distributed at the front and rear ends of the mounting cylinder to facilitate the installation of bolts.

[0009] According to the mechanical sealing device for sewage pump of the utility model, the partition is located between the motor and the pump body, which is conducive to sealing. A second threaded hole is arranged in the partition to facilitate the installation of bolts.

[0010] According to the mechanical seal device for a sewage pump described in the utility model, a switch button is arranged at the upper end of the motor, so as to facilitate the opening and adjustment of the motor.

[0011] According to the mechanical seal device for sewage pump of the utility model, the left end of the first sealing ring abuts against the right end of the partition plate, making the structure compact. The right end of the first sealing ring abuts against the left end of the first mounting ring, making the structure compact.

[0012] According to the mechanical seal device for sewage pump of the utility model, the end of the second sealing ring close to the pump body abuts against the side end of the mounting cylinder, making the structure compact. The end of the second sealing ring away from the pump body abuts against the mounting cylinder and the end of the second mounting ring close to the pump body, making the structure compact.

[0013] Beneficial Effects

[0014] 1. Compared with the prior art, the mechanical seal device for sewage pump forms an assembled sealing mechanism by combining the mounting cylinder, the partition, the drive shaft, the water pipe, the mounting ring, the sealing ring, the bolts and the nuts. The structure is firm and stable, and all directions are strictly sealed to prevent the leakage of sewage. The sealing performance of the device is enhanced;

[0015] 2. Compared with the prior art, the mechanical sealing device for the sewage pump has a simple assembly structure and is easy to disassemble and assemble, which is beneficial to the inspection and maintenance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0017] Figure 1 This is a schematic diagram of the explosion structure of a mechanical sealing device for a sewage pump of the utility model;

[0018] Figure 2 This is a structural schematic diagram of a mechanical sealing device for a sewage pump according to the utility model;

[0019] Figure 3 This is a schematic diagram of the transverse cross-sectional structure of a mechanical sealing device for a sewage pump according to the utility model;

[0020] Figure 4 The utility model is a schematic diagram of the longitudinal section structure of a mechanical sealing device for a sewage pump.

[0021] Legend:

[0022] 1. Mounting cylinder; 2. Roller; 3. Unlocking button; 4. Slot; 5. Drive shaft; 6. Motor; 7. Switch button; 8. Bolt; 9. First sealing ring; 10. Cover plate; 11. First mounting ring; 12. Nut; 13. Buckle; 14. Pump body; 15. Impeller; 16. Rotating shaft; 17. Water pipe; 18. Second mounting ring; 19. Second sealing ring; 20. First threaded hole; 21. Second threaded hole; 22. Partition. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0024] Reference Figure 1-4 The utility model embodiment is a mechanical sealing device for a sewage pump, which includes: a mounting cylinder 1, the lower end of the mounting cylinder 1 is fixedly connected with a roller 2 for movement, the roller 2 is located at the four corners of the lower end of the mounting cylinder 1 for balancing, the upper end of the mounting cylinder 1 is rotatably connected with a cover plate 10 through a rotating shaft 16 to open and close the mounting cylinder, the upper end of the cover plate 10 is fixedly connected with a buckle 13 for clamping with a slot, the upper end of the mounting cylinder 1 is provided with a slot 4 for clamping with the buckle, the front end of the mounting cylinder 1 is provided with an unlocking button 3 for unlocking, the side end of the mounting cylinder 1 is provided with a first threaded hole 20 for mounting bolts, the first threaded holes 20 are symmetrically distributed at the front and rear ends of the mounting cylinder 1 to form an installation layout, the interior of the mounting cylinder 1 is fixedly connected with a partition 22 for blocking to form a sealed space, the partition 22 is located between the motor 6 and the pump body 14 to form a sealing layout, the partition A second threaded hole 21 is provided in the plate 22 for installing bolts. The lower inner wall of the mounting cylinder 1 is fixedly connected with a motor 6 and a pump body 14 to provide power and install a pumping assembly. A switch button 7 is provided at the upper end of the motor 6 to start and adjust the motor. The output end of the motor 6 is fixedly connected with a drive shaft 5 for transmission to drive the impeller to rotate for pumping water. The drive shaft 5 is sleeved with the partition 22 to form a compact structure. The side end of the drive shaft 5 is fixedly connected with an impeller 15 and a first mounting ring 11 for rotating pumping water and for installation and fixing. A first sealing ring 9 is provided at the rear end of the first mounting ring 11 for sealing. The left end of the first sealing ring 9 abuts against the right end of the partition 22 to form a tight structure. The right end of the first sealing ring 9 abuts against the left end of the first mounting ring 11 to form a tight structure. The impeller 15 is located inside the pump body 14 to form a pumping layout.

[0025] Water pipe 17, the water pipe 17 is fixedly connected to the side end of the pump body 14 to form a firm structure, the water pipe 17 is sleeved with the mounting cylinder 1 to form a compact structure, the water pipe 17 is symmetrically distributed at the left and right ends of the pump body 14 to form a water pumping layout, the side end of the water pipe 17 is fixedly connected with a second mounting ring 19 for installation and fixing, the second mounting ring 19 is provided with a second sealing ring 18 at one end close to the pump body 14 for sealing, the end of the second sealing ring 18 close to the pump body 14 abuts against the side end of the mounting cylinder 1 to form a tight structure, the end of the second sealing ring 18 away from the pump body 14 abuts against the mounting cylinder 1 and the end of the second mounting ring 19 close to the pump body 14 to form a tight structure, the second mounting ring 19 is fixedly connected to the mounting cylinder 1 by bolts 8 and nuts 12 to form a firm structure.

[0026] Working principle: A mechanical seal device for a sewage pump is used to seal the pump body during sewage transmission to prevent sewage leakage, thereby avoiding secondary pollution caused by sewage leakage; a first mounting ring 11 is installed on the drive shaft 5, a first sealing ring 9 is installed between the first mounting ring 11 and the partition 22, a second mounting ring 19 is installed on the water pipe 17, and a second sealing ring 18 is installed between the second mounting ring 19 and the mounting cylinder 1, and sealing is performed by the first sealing ring 9 and the second sealing ring 18.

[0027] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A mechanical seal device for a sewage pump, characterized in that: include: A mounting cylinder (1), wherein a partition plate (22) is fixedly connected inside the mounting cylinder (1), a motor (6) and a pump body (14) are fixedly connected to the lower inner wall of the mounting cylinder (1), an output end of the motor (6) is fixedly connected to a drive shaft (5), the drive shaft (5) is sleeved with the partition plate (22), a side end of the drive shaft (5) is fixedly connected to an impeller (15) and a first mounting ring (11), a first sealing ring (9) is provided at the rear end of the first mounting ring (11), and the impeller (15) is located inside the pump body (14); A water delivery pipe (17), the water delivery pipe (17) being fixedly connected to the side end of the pump body (14), the water delivery pipe (17) being sleeved with the mounting cylinder (1), the water delivery pipe (17) being symmetrically distributed at the left and right ends of the pump body (14), the side end of the water delivery pipe (17) being fixedly connected to a second mounting ring (19), one end of the second mounting ring (19) close to the pump body (14) being provided with a second sealing ring (18), and the second mounting ring (19) being fixedly connected to the mounting cylinder (1) via a bolt (8) and a nut (12).

2. A mechanical seal device for a sewage pump according to claim 1, characterized in that: The lower end of the mounting cylinder (1) is fixedly connected with a roller (2), and the roller (2) is located at the four corners of the lower end of the mounting cylinder (1).

3. A mechanical seal device for a sewage pump according to claim 1, characterized in that: The upper end of the mounting cylinder (1) is rotatably connected to a cover plate (10) via a rotating shaft (16), and the upper end of the cover plate (10) is fixedly connected to a buckle (13).

4. A mechanical seal device for a sewage pump according to claim 1, characterized in that: The upper end of the mounting cylinder (1) is provided with a card slot (4), and the front end of the mounting cylinder (1) is provided with an unlocking button (3).

5. A mechanical seal device for a sewage pump according to claim 1, characterized in that: A first threaded hole (20) is provided at a side end of the mounting cylinder (1), and the first threaded holes (20) are symmetrically distributed at the front and rear ends of the mounting cylinder (1).

6. A mechanical seal device for a sewage pump according to claim 1, characterized in that: The partition plate (22) is located between the motor (6) and the pump body (14), and a second threaded hole (21) is provided in the partition plate (22).

7. A mechanical seal device for a sewage pump according to claim 1, characterized in that: A switch button (7) is provided at the upper end of the motor (6).

8. A mechanical seal device for a sewage pump according to claim 1, characterized in that: The left end of the first sealing ring (9) abuts against the right end of the partition (22), and the right end of the first sealing ring (9) abuts against the left end of the first mounting ring (11).

9. A mechanical seal device for a sewage pump according to claim 1, characterized in that: One end of the second sealing ring (18) close to the pump body (14) abuts against the side end of the mounting cylinder (1), and one end of the second sealing ring (18) away from the pump body (14) abuts against the mounting cylinder (1) and one end of the second mounting ring (19) close to the pump body (14).

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