Centrifugal pump sealing device

Abstract

The utility model discloses a centrifugal pump sealing device, and belongs to the field of centrifugal pumps. Comprising a pump machine main pipe and a connecting pipe of a pump machine water outlet pipeline, a sealing ring is arranged between the pump machine main pipe and the connecting pipe, butt joint pipes are symmetrically fixed to the two sides of the middle of the sealing ring, and the two butt joint pipes are horizontally inserted into the pump machine main pipe and the connecting pipe; an adjusting air bag capable of being inflated and deflated is fixed to the outer edge face of the butt joint pipe, the adjusting air bag extends into the pump main pipe and the connecting pipe along with the butt joint pipe, sealing rubber rings are fixed to the middles of the two sides of the sealing ring, and the sealing rubber rings abut against and are matched with ports of the pump main pipe and the connecting pipe. According to the centrifugal pump sealing device, the butt joint pipe can be matched with the adjusting air bag to seal the butt joint position of the pump main pipe and the connecting pipe with different pipe diameters, so that the universality of the device is greatly improved, and the using effect is good.

Description

Technical Field

[0001] The present application relates to the field of centrifugal pumps, and in particular to a centrifugal pump sealing device. Background Art

[0002] The centrifugal pump works by using the rotation of the impeller to make the water centrifugal. Before starting the water pump, the pump casing and the water suction pipe must be filled with water, and then the motor is started. The output shaft of the motor is connected to the main shaft of the centrifugal pump, so that the pump shaft drives the impeller and water to rotate at high speed. The water undergoes centrifugal motion and is thrown to the outer edge of the impeller, and flows into the water pressure pipeline of the water pump through the flow channel of the volute pump casing.

[0003] At present, a Chinese patent with publication number CN219529378U discloses a centrifugal pump sealing device, including a main body and a connecting pipe of a pump outlet pipe, one end of the main body and the connecting pipe are fixedly connected with flanges, the flanges of the main body and the connecting pipe are connected to each other, a connecting ring is fixedly installed at the connecting part between the two flanges, and a clamping mechanism is sleeved and installed on the outer side walls of the connecting ring and the two flanges. The clamping mechanism includes two clamping strips, one end of the two clamping strips is rotatably connected, and the inner ring of the clamping strip is provided with a clamping groove matching the connecting ring and the two flanges. The other ends of the two clamping strips are fixedly connected with a fixing piece that connects the two clamping strips to each other, and the fixing piece is configured as a buckle, and the main body and the connecting pipe are sealed and connected through the connecting ring, and the connecting ring is connected to the two flanges more tightly through the clamping mechanism, thereby increasing the sealing performance, thereby solving the problem that there is no sealing mechanism between the outlet pipe and the connecting pipe of the centrifugal pump, and water leakage is prone to occur.

[0004] However, in the above-mentioned prior art, the locking mechanism used for sealing needs to be adapted to the water outlet pipe of the pump when in use, and can only seal the pipe connection of such diameter, which leads to great limitations in its use and is inconvenient to use.

[0005] To this end, the present application proposes a centrifugal pump sealing device to solve the above technical problems. Utility Model Content

[0006] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0007] In order to solve the technical problems mentioned in the above background technology part, some embodiments of the present application provide a centrifugal pump sealing device, including a pump main pipe and a connecting pipe of a pump water outlet pipe, a sealing ring is arranged between the pump main pipe and the connecting pipe, and docking pipes are symmetrically fixed on both sides of the middle of the sealing ring, and the two docking pipes are horizontally inserted into the pump main pipe and the connecting pipe, and an inflatable and deflable adjusting air bag is fixed on the outer edge surface of the docking pipe, and the adjusting air bag extends into the pump main pipe and the connecting pipe along with the docking pipe, and sealing rubber rings are fixed in the middle of both sides of the sealing ring, and the sealing rubber rings are abutted and matched with the ports of the pump main pipe and the connecting pipe.

[0008] Furthermore, flanges are fixed to the ends of the pump main pipe and the connecting pipe facing each other, and fastening bolts are provided through the two flanges for fixing.

[0009] Furthermore, the flange is provided with fixing holes for the fastening bolts to pass through, and the sealing ring and the sealing rubber ring are provided with docking holes for the fastening bolts to pass through at positions corresponding to the fixing holes.

[0010] Furthermore, the two regulating airbags are both annular in structure and are respectively fixed around the outer edge surfaces of one end of the two butt joint tubes facing the sealing ring.

[0011] Furthermore, two inflation ports are provided on the outer side of the sealing ring, and ventilation pipes are provided on the side of the two regulating airbags facing the sealing ring, and the ventilation pipes extend into the bottom of the inflation ports.

[0012] Furthermore, the two inflation ports are symmetrically fixed on the upper and lower sides of the sealing ring, and the top ports of the two inflation ports are both located on the surface of the sealing ring.

[0013] Furthermore, an inflation plug for sealing is provided in the top port of the inflation port.

[0014] Furthermore, an internal threaded portion is constructed on the inner wall of the top port of the inflation port, and an external threaded portion is constructed on the outer edge surface of the inflation plug, and the external threaded portion is threadably matched with the internal threaded portion.

[0015] The beneficial effects of the present application are as follows: a centrifugal pump sealing device is provided, which can seal and fix the joint between the pump main pipe and the connecting pipe by means of a sealing ring, a butt joint pipe, an adjusting air bag and a sealing rubber ring, and the inflation port cooperates with the adjusting air bag so that the adjusting air bag on the butt joint pipe can be adjusted in size by inflation and deflation, so that the butt joint pipe can cooperate with the adjusting air bag to seal the joints between the pump main pipe and the connecting pipe of different diameters, thereby greatly improving the versatility of the device and achieving good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0017] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0018] In the attached picture:

[0019] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0020] Figure 2 It is a schematic diagram of structural disassembly according to an embodiment of the present application;

[0021] Figure 3 is an overall schematic diagram of a sealing ring according to an embodiment of the present application;

[0022] Figure 4 It is a schematic diagram of the internal structure of a sealing ring according to an embodiment of the present application.

[0023] Reference numerals:

[0024] 1. Pump main pipe; 2. Connecting pipe; 3. Flange; 4. Fastening bolts; 5. Sealing ring; 501. Docking hole; 6. Docking pipe; 7. Adjusting airbag; 701. Ventilation pipe; 8. Sealing rubber ring; 9. Inflating port; 901. Internal threaded part; 10. Inflating plug; 1001. External threaded part. DETAILED DESCRIPTION

[0025] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0026] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0027] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0028] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0029] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0030] like Figure 1 and Figure 2 As shown, a centrifugal pump sealing device comprises a pump main pipe 1 and a connecting pipe 2 of a pump outlet pipe, a sealing ring 5 is arranged between the pump main pipe 1 and the connecting pipe 2, a flange 3 is fixed to the end of the pump main pipe 1 and the connecting pipe 2 facing each other, and a fastening bolt 4 is arranged between the two flanges 3 for fixing. Figure 2 and Figure 3 As shown, the flange 3 is provided with a fixing hole 301 for the fastening bolt 4 to pass through, and the sealing ring 5 is provided with a docking hole 501 for the fastening bolt 4 to pass through at a position corresponding to the fixing hole 301, so that the sealing ring 5 can be fixed between the pump main pipe 1 and the connecting pipe 2 for sealing.

[0031] like Figure 2 and Figure 3 As shown, butt joints 6 are symmetrically fixed on both sides of the middle of the sealing ring 5, and the two butt joints 6 are horizontally inserted into the pump main pipe 1 and the connecting pipe 2. The inner diameter of the butt joints 6 is not larger than the inner diameters of the pump main pipe 1 and the connecting pipe 2, so that the sealing ring 5 can be inserted between the pump main pipe 1 and the connecting pipe 2 of any diameter using the butt joints 6.

[0032] The outer edge of the butt joint pipe 6 is fixed with an inflatable and deflated regulating airbag 7, and the two regulating airbags 7 are both annular structures and are respectively fixed around the outer edge of the two butt joint pipes 6 at one end facing the sealing ring 5. At the same time, the regulating airbag 7 extends into the pump main pipe 1 and the connecting pipe 2 along with the butt joint pipe 6. Therefore, the surface thickness of the butt joint pipe 6 can be adjusted by inflating and deflation of the regulating airbag 7, so that the butt joint pipe 6 and the regulating airbag 7 can be adapted to various diameters of the pump main pipe 1 and the connecting pipe 2 for plugging and fixing.

[0033] Cooperate Figure 4As shown, two inflation ports 9 are provided on the outer side of the sealing ring 5 , and ventilation tubes 701 are provided on the two adjusting airbags 7 facing the sealing ring 5 . The ventilation tubes 701 extend into the bottom of the inflation ports 9 , so that the user can inflate and deflate the adjusting airbags 7 through the inflation ports 9 .

[0034] Specifically, the two inflation ports 9 are symmetrically fixed on the upper and lower sides of the sealing ring 5, the top ports of the two inflation ports 9 are both located on the surface of the sealing ring 5, and the top ports of the inflation ports 9 are matched with an inflation plug 10 for sealing. In specific implementation, an internal threaded portion 901 is configured on the inner wall of the top port of the inflation port 9, and an external threaded portion 1001 is configured on the outer edge surface of the inflation plug 10, and the external threaded portion 1001 is threadedly matched with the internal threaded portion 901.

[0035] In addition, in the present embodiment, sealing rubber rings 8 are fixed in the middle of both sides of the sealing ring 5, and the sealing rubber rings 8 are abutted against the ports of the pump main pipe 1 and the connecting pipe 2 to further improve the sealing of the connection between the pump main pipe 1 and the connecting pipe 2, and the sealing rubber ring 8 is also provided with docking holes 501 at the positions corresponding to the fixing holes 301 for the fastening bolts 4 to penetrate for fixing.

[0036] The centrifugal pump sealing device can be used to place a sealing ring 5 between a pump main pipe 1 and a connecting pipe 2, and then insert the pump main pipe 1 and the connecting pipe 2 into the connecting pipe 2 through a butt joint 6 to form a connection. At this time, the adjusting airbag 7 is located between the outer edge surface of the butt joint 6 and the inner wall of the pump main pipe 1 or the connecting pipe 2. The staff can inflate and deflate the adjusting airbag 7 through the inflation port 9 to adjust the thickness of the adjusting airbag 7, so that the butt joint 6 can cooperate with the adjusting airbag 7 to seal the butt joint of the pump main pipe 1 and the connecting pipe 2 of different diameters. At the same time, the sealing rubber ring 8 is in contact with the ports of the pump main pipe 1 and the connecting pipe 2, so that the versatility of the device can be greatly improved while ensuring the sealing effect, and the use effect is good.

[0037] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A centrifugal pump sealing device, comprising a pump main pipe (1) and a connecting pipe (2) of a pump outlet pipe, characterized in that: A sealing ring (5) is provided between the pump main pipe (1) and the connecting pipe (2), butt pipes (6) are symmetrically fixed on both sides of the middle of the sealing ring (5), the two butt pipes (6) are horizontally inserted into the pump main pipe (1) and the connecting pipe (2), and an inflatable and deflable regulating air bag (7) is fixed on the outer edge surface of the butt pipe (6); The regulating airbag (7) extends into the pump main pipe (1) and the connecting pipe (2) along with the butt pipe (6); sealing rubber rings (8) are fixed in the middle of both sides of the sealing ring (5); the sealing rubber rings (8) are in abutment with the ports of the pump main pipe (1) and the connecting pipe (2).

2. The centrifugal pump sealing device according to claim 1, characterized in that: A flange (3) is fixed to the facing end of the pump main pipe (1) and the connecting pipe (2), and a fastening bolt (4) is provided between the two flanges (3) for fixing.

3. The centrifugal pump sealing device according to claim 2, characterized in that: The flange (3) is provided with a fixing hole (301) for the fastening bolt (4) to pass through, and the sealing ring (5) and the sealing rubber ring (8) are provided with a docking hole (501) for the fastening bolt (4) to pass through at a position corresponding to the fixing hole (301).

4. The centrifugal pump sealing device according to claim 1, characterized in that: The two regulating air bags (7) are both annular in structure and are respectively fixed around the outer edge surfaces of one end of the two butt joint pipes (6) facing the sealing ring (5).

5. The centrifugal pump sealing device according to claim 4, characterized in that: Two inflation ports (9) are provided on the outer side of the sealing ring (5), and ventilation pipes (701) are provided on the side of the two regulating airbags (7) facing the sealing ring (5), and the ventilation pipes (701) extend into the inner bottom of the inflation ports (9).

6. The centrifugal pump sealing device according to claim 5, characterized in that: The two inflation ports (9) are symmetrically fixed on the upper and lower sides of the sealing ring (5), and the top ports of the two inflation ports (9) are both located on the surface of the sealing ring (5).

7. The centrifugal pump sealing device according to claim 6, characterized in that: The top end of the inflation port (9) is equipped with an inflation plug (10) for sealing.

8. The centrifugal pump sealing device according to claim 7, characterized in that: An internal threaded portion (901) is constructed on the inner wall of the top port of the inflation port (9), and an external threaded portion (1001) is constructed on the outer edge surface of the inflation plug (10), and the external threaded portion (1001) is threadably matched with the internal threaded portion (901).

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