Cylinder magnetic drive pump of anti-frosting structure

Abstract

The utility model relates to the technical field of a barrel magnetic drive pump with an anti-frosting structure, and discloses a barrel magnetic drive pump with an anti-frosting structure, which comprises a barrel, a bearing box component, a connecting frame component, a flywheel, a driving device and a coupling. A bearing box assembly is arranged on the top of the barrel bag. A connecting frame assembly is arranged on the top of the bearing box assembly. The driving device comprises a driving end and a fixed end. The top of the connecting frame assembly is provided with a driving device fixing end. The driving end of the driving device is connected with a driving shaft. The outer surface of the driving shaft is sleeved with a flywheel and a coupler. The flywheel is located between the driving device and the connecting frame assembly. The top of the coupler abuts against the bottom of the flywheel. An air inlet and an air outlet are formed in the outer side of the connecting frame assembly The air inlet and the air outlet communicate with an inner cavity of the connecting frame assembly. The protective cover is adopted for sealing, the contact area of the inside and the atmosphere is reduced, and frosting is avoided. The air inlet and the air outlet are formed in the connecting frame assembly, nitrogen defrosting is carried out on the interior, and faults are prevented from occurring when the pump is started or operated.

Description

Technical Field

[0001] The utility model relates to the technical field of a barrel bag magnetic pump with an anti-frost structure, in particular to a barrel bag magnetic pump with an anti-frost structure. Background Art

[0002] The barrel bag magnetic drive pump is designed for easily vaporized media. It is widely used in liquid transportation in the chemical industry for its non-leakage and high anti-cavitation performance. It is especially used for transporting chemical liquids that are easily vaporized, corrosive, flammable, explosive, toxic, etc. It has unique safety and environmental protection advantages. However, some working media are special. For example, when the medium is liquid chlorine, because the medium temperature is -25℃, the bearing box assembly and the barrel bag cover are prone to frost due to the large temperature difference between the barrel bag and the atmosphere, which makes the pump unable to turn and start.

[0003] In order to solve the above problems, we propose a barrel bag magnetic pump with an anti-frost structure. Utility Model Content

[0004] The utility model aims to provide a barrel bag magnetic pump with an anti-frost structure to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a barrel bag magnetic pump with an anti-frost structure, comprising a barrel bag, a bearing box assembly, a connecting frame assembly, a flywheel, a driving device and a coupling; the bearing box assembly is provided on the top of the barrel bag; the connecting frame assembly is provided on the top of the bearing box assembly; the driving device comprises a driving end and a fixed end; the driving device fixed end is provided on the top of the connecting frame assembly; the driving end of the driving device is connected to a driving shaft; the flywheel and the coupling are sleeved on the outer surface of the driving shaft; the flywheel is located between the driving device and the connecting frame assembly; the top of the coupling is against the bottom of the flywheel; an air inlet and an air outlet are provided on the outside of the connecting frame assembly; the air inlet and the air outlet are both connected to the inner cavity of the connecting frame assembly.

[0006] Preferably, the connecting frame assembly includes a connecting frame body and a connecting base; the top of the connecting frame body is connected to the driving device; and the bottom of the connecting frame body is connected to the top of the barrel bag through the connecting base.

[0007] Preferably, a cavity is provided on the side wall of the connecting frame; a plurality of air holes are provided on the inner side wall of the cavity of the connecting frame side wall; and the air inlet is connected to the cavity of the frame side wall.

[0008] Preferably, a turning process hole is opened on the top of the flywheel.

[0009] Preferably, an inspection port is provided on the outer side wall of the connecting frame assembly; and a protective cover is provided at the inspection port of the connecting frame assembly.

[0010] Preferably, the outer end of the air outlet is connected to the input end of a circulation device; and the output end of the circulation device is connected to the air inlet.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the connecting frame assembly in the barrel bag magnetic pump with the anti-frost structure adopts a protective cover seal, which can reduce the area of ​​the interior in contact with the atmosphere and avoid the generation of frost. The utility model sets an air inlet and an air outlet at the connecting frame assembly, and uses nitrogen to purge the small amount of frost generated, thereby preventing the pump from malfunctioning during startup or operation, ensuring the safe and stable operation of the pump and increasing the service life of the pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the cross-sectional structure of the main view of the connecting frame assembly in the utility model.

[0014] In the figure: 1-cylinder bag, 2-bearing box assembly, 3-connecting frame assembly, 31-connecting frame body, 32-connecting base, 4-flywheel, 41-turning process hole, 5-driving device, 6-coupling, 7-air inlet, 8-air outlet, 9-protective cover. DETAILED DESCRIPTION

[0015] 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.

[0016] See also Figure 1 , Figure 2The utility model provides a technical solution: a barrel bag magnetic pump with an anti-frost structure, comprising a barrel bag 1, a bearing box assembly 2, a connecting frame assembly 3, a flywheel 4, a driving device 5 and a coupling 6. The bearing box assembly 2 is arranged on the top of the barrel bag 1. The connecting frame assembly 3 is arranged on the top of the bearing box assembly 2. The driving device 5 comprises a driving end and a fixed end. The fixed end of the driving device 5 is arranged on the top of the connecting frame assembly 3. The driving end of the driving device 5 is connected to a driving shaft. The flywheel 4 and the coupling 6 are sleeved on the outer surface of the driving shaft. The flywheel 4 is located between the driving device 5 and the connecting frame assembly 3. The top of the coupling 6 is against the bottom of the flywheel 4. An air inlet 7 and an air outlet 8 are arranged on the outside of the connecting frame assembly 3. The air inlet 7 and the air outlet 8 are both connected to the inner cavity of the connecting frame assembly 3.

[0017] The flywheel 4 and the coupling 6 are both located in the connecting frame assembly 3. The driving device 5 is a motor.

[0018] Furthermore, the connecting frame assembly 3 includes a connecting frame body 31 and a connecting base 32. The top of the connecting frame body 31 is connected to the driving device 5. The bottom of the connecting frame body 31 is connected to the top of the barrel bag 1 through the connecting base 32.

[0019] Furthermore, a cavity is provided on the side wall of the connecting frame 31. A plurality of vents are provided on the inner side wall of the cavity on the side wall of the connecting frame 31. The air inlet 7 is connected to the cavity on the side wall of the frame 31.

[0020] Furthermore, a winch process hole 41 is provided at the top of the flywheel 4. The flywheel 4 of the utility model is a flywheel winch, which is a type of pump winch. An inspection port is provided on the outer wall of the connecting frame assembly 3. A protective cover 9 is provided at the inspection port of the connecting frame assembly 3. That is, the connecting frame assembly 3 is sealed by the protective cover 9. A sealing gasket is provided at the connection between the protective cover 9 and the connecting frame assembly 3.

[0021] During operation, the protective cover 9 at the inspection port cannot be removed. Because the inner cavity of the barrel bag 1 is filled with liquid chlorine, the inner cavity of the connecting frame assembly 3 is in a low temperature state, which is continuously maintained at about minus 25 degrees. Therefore, too much of the inner cavity of the connecting frame assembly 3 is in contact with the atmosphere, which is prone to frost. However, the winch cannot be performed without opening the protective cover 9. Therefore, the winch process hole 41 is provided on the top surface of the flywheel 4 to facilitate the winch of the equipment.

[0022] It should be explained here that pump turning means turning the pump several times by manpower or turning device before starting the motor, in order to determine whether the load driven by the motor (i.e. the mechanical or transmission part) is stuck and the resistance is increased, so as to avoid increasing the starting load of the motor and damaging the motor (i.e. burning out). The main purpose of this operation is to check whether there are abnormal phenomena in the pump, such as the stuck rotating parts, the blockage of debris, the rust of parts, the solidification of the internal medium, the packing too tight or too loose, the leakage of the shaft seal, the lack of oil in the bearing, the bending and deformation of the shaft, etc., to prevent the deformation of the rotor due to gravity when it is stationary for a long time, and to check whether the pump shaft rotates flexibly and whether there is any abnormal sound. In addition, turning can also help protect the equipment from excessive pressure and load, thereby preventing the equipment from being damaged by overload. In some special cases, such as when the outlet pipe of the pump is blocked, the turning of the centrifugal pump can also play a role in clearing the pipeline debris to ensure the safe production. In short, the purpose of pump turning is multifaceted, which can not only ensure the safe operation of the equipment, but also improve the operation efficiency of the equipment.

[0023] Furthermore, the outer end of the gas outlet 8 is connected to the input end of the circulation device. The output end of the circulation device is connected to the gas inlet 7. This design is to reduce nitrogen loss and recycle the nitrogen used inside through the external circulation device.

[0024] Working principle:

[0025] First, the winching step is performed through the winching process hole 41 on the top of the flywheel 4. The driving device 5 is turned on. Liquid chlorine medium exists in the inner cavity of the barrel bag 1. At this time, in order to prevent frost in the connecting frame assembly 3, nitrogen is introduced from the air inlet 7 for defrosting. After the nitrogen has completed its work, the external circulation device of the air outlet 8 is opened for exhaust.

[0026] In order to ensure the long-term stable operation of the pump, the utility model takes liquid chlorine as an example. Since liquid chlorine is a toxic and easily vaporized medium, a barrel bag magnetic pump must be used to prevent pump leakage. Because the medium is low temperature, at the connection between the bearing box assembly 2 and the top of the barrel bag 1, due to the large temperature difference between the inside of the barrel bag 1 and the atmosphere, it is easy to cause frost to form on the components in the inner cavity of the connecting frame assembly 3, resulting in the pump being unable to crank and start. Therefore, the connecting frame assembly 3 is sealed with the protective cover 9 to reduce the area of ​​contact between the interior and the atmosphere and avoid the generation of frost. The pump cranks with the flywheel 4. At the same time, the air inlet 7 and the air outlet 8 are provided at the connecting frame to purge the small amount of frost generated with nitrogen to prevent the pump from malfunctioning during startup or operation, thereby ensuring the safe and stable operation of the pump and increasing the service life of the pump.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A barrel bag magnetic pump with an anti-frost structure, characterized in that: The invention comprises a barrel bag (1), a bearing box assembly (2), a connecting frame assembly (3), a flywheel (4), a driving device (5) and a coupling (6); the bearing box assembly (2) is arranged on the top of the barrel bag (1); the connecting frame assembly (3) is arranged on the top of the bearing box assembly (2); the driving device (5) comprises a driving end and a fixed end; the fixed end of the driving device (5) is arranged on the top of the connecting frame assembly (3); the driving end of the driving device (5) is connected with a driving shaft; the flywheel (4) and the coupling (6) are sleeved on the outer surface of the driving shaft; the flywheel (4) is located between the driving device (5) and the connecting frame assembly (3); the top of the coupling (6) is against the bottom of the flywheel (4); the outer side of the connecting frame assembly (3) is provided with an air inlet (7) and an air outlet (8); the air inlet (7) and the air outlet (8) are both connected to the inner cavity of the connecting frame assembly (3).

2. A barrel bag magnetic pump with an anti-frost structure according to claim 1, characterized in that: The connecting frame assembly (3) comprises a connecting frame body (31) and a connecting base (32); the top of the connecting frame body (31) is connected to the driving device (5); and the bottom of the connecting frame body (31) is connected to the top of the barrel bag (1) via the connecting base (32).

3. A barrel bag magnetic pump with an anti-frost structure according to claim 2, characterized in that: The side wall of the connecting frame (31) is provided with a cavity; the inner side wall of the cavity of the side wall of the connecting frame (31) is provided with a plurality of ventilation holes; and the air inlet (7) is connected to the cavity of the side wall of the frame (31).

4. The barrel bag magnetic pump with an anti-frost structure according to claim 1, characterized in that: A turning process hole (41) is provided on the top of the flywheel (4).

5. The barrel bag magnetic pump with an anti-frost structure according to claim 1, characterized in that: An inspection port is provided on the outer side wall of the connecting frame assembly (3); and a protective cover (9) is provided at the inspection port of the connecting frame assembly (3).

6. The barrel bag magnetic pump with an anti-frost structure according to claim 1, characterized in that: The outer end of the air outlet (8) is connected to the input end of a circulation device; the output end of the circulation device is connected to the air inlet (7).

Images