Mechanical sealing device of sewage pump

Abstract

The utility model discloses a mechanical sealing device of a sewage pump, and belongs to the technical field of mechanical sealing devices. Comprising a vibration reduction hoop ring mechanism which at least comprises a hoop ring assembly and at least one vibration reduction assembly arranged on the outer side of the hoop ring assembly. And the compensation assembly is arranged on the inner side of the shroud ring assembly and used for adjusting the sealing gap. The damping hoop mechanism is arranged, the first damping block and the second damping block which wrap the connecting pipe of the sewage pump and are arranged in a central symmetry mode can effectively absorb and disperse impact loads, the influence on the connecting pipe when the sewage pump works is reduced, the vibration amplitude is reduced, and the stability of the sewage pump is improved; a compensation assembly is arranged to compensate the gap change at the sewage pump connecting pipe, a first compensation mechanism and a second compensation mechanism which are arranged in a central symmetry mode guarantee the stability when the gap is adjusted, abutting blocks are tightly attached to the outer sides of the connecting pipes at the two ends respectively, and when the gap is enlarged, the abutting blocks at the two ends slide towards the middle through guide rails to reduce the gap; and the sealing performance of the sewage pump is improved.

Description

Technical Field

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

[0002] Sewage pump is a kind of centrifugal impurity pump, which has many forms, such as submersible and dry types. The most commonly used submersible type is QW submersible sewage pump, and the most common dry sewage pumps are W-type horizontal sewage pump and WL-type vertical sewage pump. The use of sewage pump requires many auxiliary devices, such as mechanical sealing devices, but there are still many problems when using traditional mechanical sealing devices for sewage pumps.

[0003] In the prior art, traditional mechanical seals often have problems such as short service life, high maintenance costs, and unstable sealing performance. During the operation of the sewage pump, the sewage contains a large amount of impurities and corrosive substances, which will cause wear and corrosion to the mechanical seal, resulting in a larger sealing gap; in addition, the vibration of the sewage pump during operation will also cause the sealing performance to deteriorate, affecting the normal operation of the pump. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a sewage pump mechanical sealing device.

[0005] The technical solution adopted by the utility model is as follows: a sewage pump mechanical sealing device, comprising:

[0006] A vibration-damping hoop mechanism, the vibration-damping hoop mechanism at least comprising: a hoop assembly, at least one set of vibration-damping assemblies arranged outside the hoop assembly;

[0007] The compensation component is arranged on the inner side of the hoop assembly and is used to adjust the sealing gap.

[0008] Preferably, the hoop assembly comprises: a first arc-shaped plate, and a second arc-shaped plate arranged opposite to the first arc-shaped plate.

[0009] Preferably, the vibration damping assembly comprises: at least one first vibration damping block arranged on the outer side of the first arc-shaped plate, at least one second vibration damping block arranged on the outer side of the second arc-shaped plate, and the first vibration damping block and the second vibration damping block are arranged symmetrically to the center.

[0010] Preferably, one end of the first arc plate and the second arc plate are extended to form a fixing portion, and the fixing portion is hinged; the other end of the first arc plate is extended to form a locking portion, and the locking portion is provided with a locking hole; the other end of the second arc plate is extended to form a hinged portion, a threaded groove is provided on the inner side of the hinged portion, and a locking ring structure is hinged on the outer side of the hinged portion.

[0011] Preferably, the locking ring structure comprises: a connecting ring hinged at both ends of the hinged portion, and a tightening structure passing through the connecting ring;

[0012] The locking ring structure matches the locking hole to achieve the opening and closing of the hoop assembly.

[0013] Preferably, the compensation assembly comprises: at least one first compensation mechanism disposed on the inner side of the first arc-shaped plate, at least one second compensation mechanism disposed on the inner side of the second arc-shaped plate, and the first compensation mechanism and the second compensation mechanism are centrally symmetrically disposed.

[0014] Preferably, the first compensation mechanism and the second compensation mechanism both comprise: a guide rail, and at least two abutment blocks slidably disposed at two ends of the guide rail.

[0015] The beneficial effects of the utility model are as follows: the utility model arranges a vibration-damping hoop mechanism to wrap the connecting pipe of the sewage pump, thereby improving the stability during vibration resistance; the first vibration-damping block and the second vibration-damping block arranged symmetrically at the center can effectively absorb and disperse the impact load, reduce the impact of the sewage pump on the connecting pipe when it is working, reduce the vibration amplitude, and improve the stability of the sewage pump; a compensation component is arranged to compensate for the gap change at the connecting pipe of the sewage pump; the first compensation mechanism and the second compensation mechanism arranged symmetrically at the center ensure the stability when adjusting the gap; the blocks are respectively placed tightly on the outside of the connecting pipes at both ends; when the gap becomes larger, the blocks at both ends slide toward the middle through the guide rails to reduce the gap, improve the sealing performance of the sewage pump, and increase the service life. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 It is a top view of the utility model;

[0018] Figure 3 It is a usage state diagram of the utility model in the embodiment.

[0019] In the accompanying drawings, the list of components represented by each reference numeral is as follows: hoop assembly 1, vibration reduction assembly 2, compensation assembly 3, first arc plate 4, second arc plate 5, first vibration reduction block 6, second vibration reduction block 7, fixing portion 8, locking portion 9, hinged portion 10, locking ring structure 11, connecting ring 12, tightening structure 13, first compensation mechanism 14, second compensation mechanism 15, guide rail 16, and stop block 17. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the specification and embodiments, which will enable those skilled in the art to more fully understand the present invention, but will not limit the present invention in any way.

[0021] In order to solve the technical problems existing in the background technology, this embodiment discloses a sewage pump mechanical seal device, such as Figures 1 to 3 The invention comprises: a vibration-damping hoop mechanism and a compensation component 3. The vibration-damping hoop mechanism comprises: a hoop component 1 and two groups of vibration-damping components 2 arranged outside the hoop component 1. The compensation component 3 is arranged inside the hoop component 1 to adjust the sealing gap.

[0022] In a further embodiment, the hoop assembly 1 comprises: a first arc plate 4, and a second arc plate 5 arranged opposite to the first arc plate 4. The concave surfaces of the first arc plate 4 and the second arc plate 5 are opposite to each other, forming a complete ring that wraps around the sewage pump connection pipe.

[0023] In a further embodiment, the vibration reduction assembly 2 includes: two first vibration reduction blocks 6 arranged outside the first arc-shaped plate 4, two second vibration reduction blocks 7 arranged outside the second arc-shaped plate 5, and the first vibration reduction blocks 6 and the second vibration reduction blocks 7 are centrally symmetrically arranged. The centrally symmetrically arranged first vibration reduction blocks 6 and the second vibration reduction blocks 7 can effectively absorb and disperse the impact load, reduce the impact on the connecting pipe when the sewage pump is working, reduce the vibration amplitude, and improve the stability of the sewage pump.

[0024] In a further embodiment, one end of the first arc plate 4 and the second arc plate 5 are extended to form a fixing portion 8, and the fixing portion 8 is hinged; the other end of the first arc plate 4 is extended to form a locking portion 9, and the locking portion 9 is provided with a locking hole; the other end of the second arc plate 5 is extended to form a hinged portion 10, and a thread groove is provided on the inner side of the hinged portion 10, and a locking ring structure 11 is hinged on the outer side of the hinged portion 10. The locking ring structure 11 includes: a connecting ring 12 hinged at both ends of the hinged portion 10, and a tightening structure 13 running through the connecting ring 12; the locking ring structure 11 matches the locking hole to realize the opening and closing of the hoop assembly 1.

[0025] In a further embodiment, the compensation assembly 3 includes: four first compensation mechanisms 14 arranged on the inner side of the first arc plate 4, and four second compensation mechanisms 15 arranged on the inner side of the second arc plate 5. The first compensation mechanisms 14 and the second compensation mechanisms 15 are arranged symmetrically and evenly distributed. The first compensation mechanism 14 and the second compensation mechanism 15 both include: a guide rail 16, and two stoppers 17 slidably arranged at both ends of the guide rail 16. The compensation assembly 3 compensates for the gap change at the sewage pump connecting pipe. The first compensation mechanism 14 and the second compensation mechanism 15 arranged symmetrically ensure the stability when adjusting the gap. The stoppers 17 are respectively placed closely on the outer sides of the connecting pipes at both ends. When the gap becomes larger, the stoppers 17 at both ends slide toward the middle through the guide rail 16 to reduce the gap, improve the sealing performance of the sewage pump, and increase the service life.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model, and they should all be included in the scope of the claims and specification of the utility model.

Claims

1. A sewage pump mechanical seal device, characterized in that: include: A vibration-damping hoop mechanism, the vibration-damping hoop mechanism at least comprising: a hoop assembly, at least one set of vibration-damping assemblies arranged outside the hoop assembly; The compensation component is arranged on the inner side of the hoop assembly and is used to adjust the sealing gap.

2. A sewage pump mechanical seal device as claimed in claim 1, characterized in that: The hoop assembly includes: a first arc-shaped plate and a second arc-shaped plate arranged opposite to the first arc-shaped plate.

3. A sewage pump mechanical seal device as claimed in claim 2, characterized in that: The vibration damping assembly comprises: at least one first vibration damping block arranged outside the first arc-shaped plate, and at least one second vibration damping block arranged outside the second arc-shaped plate, wherein the first vibration damping block and the second vibration damping block are arranged symmetrically with respect to the center.

4. A sewage pump mechanical seal device as claimed in claim 3, characterized in that: One end of the first arc plate and the second arc plate are extended to form a fixing portion, and the fixing portion is hinged; the other end of the first arc plate is extended to form a locking portion, and the locking portion is provided with a locking hole; the other end of the second arc plate is extended to form a hinged portion, the inner side of the hinged portion is provided with a threaded groove, and the outer side of the hinged portion is hinged with a locking ring structure.

5. A sewage pump mechanical seal device as claimed in claim 4, characterized in that: The locking ring structure comprises: a connecting ring hinged at both ends of the hinged portion, and a tightening structure penetrating through the connecting ring; The locking ring structure matches the locking hole to achieve the opening and closing of the hoop assembly.

6. A sewage pump mechanical seal device as claimed in claim 2, characterized in that: The compensation assembly includes: at least one first compensation mechanism disposed on the inner side of the first arc-shaped plate, and at least one second compensation mechanism disposed on the inner side of the second arc-shaped plate, wherein the first compensation mechanism and the second compensation mechanism are disposed symmetrically with respect to the center.

7. A sewage pump mechanical seal device as claimed in claim 6, characterized in that: The first compensation mechanism and the second compensation mechanism both include: a guide rail and at least two abutment blocks slidably disposed at both ends of the guide rail.

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