Physical defoaming device with integral bracket

Abstract

The utility model relates to the technical field of defoaming, and provides a physical defoaming device with an integral support, which comprises a defoaming impeller used for defoaming and a motor used for driving the defoaming impeller to rotate, an impeller connecting shaft of the defoaming impeller is coaxially connected with a motor shaft of the motor, and the integral support is arranged on the defoaming impeller. The support is used for supporting the motor, the rolling bearing is used for preventing liquid from entering the motor, the support is provided with a liquid blocking cavity for the rolling bearing to be arranged, the support extends into the liquid blocking cavity to form a box body of the rolling bearing, and the rolling bearing is arranged in the box body. According to the physical defoaming device with the integral support, foam can be physically eliminated through the defoaming impeller, and the support is adopted, so that the effect of supporting the motor is achieved, space is provided for installation of the rolling bearing, the support serves as a box body of the rolling bearing, the rolling bearing operates stably and reliably, the machining cost is reduced, and the production efficiency is improved. The installation and the use are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of defoaming, in particular to a physical defoaming device with an integral bracket. Background Art

[0002] In the fields of steel, chemical industry, medicine, food, etc., due to production requirements, the chemical media used are prone to generate some foams that are not beneficial to production. If the foams are not treated in a timely and effective manner, they will cause harm to the production process and equipment, damage the production equipment, affect the product quality, and even reduce the production capacity. For example, in the field of steel strip processing, a degreasing section needs to be set to clean the surface of the strip steel containing dirt such as grease, scale powder, iron powder, and carbon powder after rolling. Due to the surfactant component in the degreasing agent, under the influence of stirring and temperature factors, the degreasing agent will wrap air to generate a large amount of foams. After the foams overflow from the container, they will cause damage to the surrounding motors and environmental pollution. When the foams overflow into the strip steel cleaning tank, they will affect the strip steel cleaning effect.

[0003] At present, most of the defoaming methods are chemical defoaming methods of adding defoaming agents to the foaming-prone media. For example, patents ZL200820218185.3 and ZL200820012731.8 disclose defoaming methods and equipment for adding defoaming agents. However, the defoaming agents used in this chemical defoaming method generally have an inhibitory effect on the active components in the foaming-prone media, and even some will produce precipitates to block the system pipelines and equipment. The defoaming agent is continuously added according to the condition of the foaming-prone media, consuming a large amount of production costs, and the defoaming agent itself generally contains difficult-to-degrade organic substances such as silicone or polyether, increasing the difficulty and cost of water treatment. If ordinary mechanical defoaming methods are used, for the container storing the foaming-prone media, due to the change of the pressure in the container caused by the foaming-prone media itself and the obvious upward air flow formed after the foams are broken, the unbroken foam flow will be entrained to cross the impeller, so the foams will damage the mechanisms such as the motor of the mechanical defoaming device, and even directly overflow outside the container to cause harm. Content of the Utility Model

[0004] The purpose of the utility model is to provide a physical defoaming device with an integral bracket, which can at least solve some defects in the prior art.

[0005] To achieve the above purpose, the embodiment of the utility model provides the following technical solution: A physical defoaming device with an integral bracket, including a defoaming impeller for eliminating foams and a motor for driving the defoaming impeller to rotate. The impeller connecting shaft of the defoaming impeller is coaxially connected with the motor shaft of the motor. It also includes a bracket for supporting the motor and a rolling bearing for blocking liquid from entering the motor. The bracket has a liquid-blocking chamber for setting the rolling bearing, and the bracket extends into the liquid-blocking chamber to form a box body of the rolling bearing, and the rolling bearing is arranged in the box body.

[0006] Further, the rolling bearing is an angular contact ball bearing or a deep groove ball bearing, and the rolling bearing is arranged on the impeller connecting shaft.

[0007] Further, a mechanical seal structure is further arranged on the impeller connecting shaft, and at least part of the mechanical seal structure is placed in the liquid blocking chamber.

[0008] Further, a coupling for connecting the impeller connecting shaft and the motor shaft is further included. The coupling is located in the liquid blocking chamber and above the rolling bearing.

[0009] Further, a mounting base for supporting the bracket is further included, and the defoaming impeller is located below the mounting base.

[0010] Further, a housing is further arranged below the mounting base, and the defoaming impeller is located in the housing.

[0011] Further, the bottom of the housing has a suction section.

[0012] Further, a diversion box body is arranged between the suction section and the housing.

[0013] Further, a wearing ring is arranged on the suction section.

[0014] Further, a sliding bearing is further arranged on the impeller connecting shaft, and the sliding bearing is located at a position between the defoaming impeller and the bracket.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: a physical defoaming device with an integral bracket can physically eliminate foam through a defoaming impeller. By adopting the bracket, it not only plays a role in supporting the motor, provides space for the installation of the rolling bearing, but also serves as a housing for the rolling bearing, enabling the rolling bearing to operate stably and reliably, reducing the processing cost, and being convenient for installation and use. Description of the Drawings

[0016] Figure 1 It is a schematic cross-sectional view of a physical defoaming device with an integral bracket provided by an embodiment of the present utility model from the main view perspective;

[0017] Figure 2 It is a schematic view of a physical defoaming device with an integral bracket provided by an embodiment of the present utility model from the top view perspective;

[0018] In the attached drawing reference numerals: 1 - motor, 2 - bracket, 3 - coupling, 4 - impeller connecting shaft, 5 - rolling bearing, 6 - mechanical seal structure, 7 - sliding bearing, 8 - mounting base, 9 - defoaming impeller, 10 - housing, 11 - wearing ring, 12 - guide vane housing, 13 - suction section, 14 - impeller nut, 15 - box body. Detailed implementation manners

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figure 1 and Figure 2, an embodiment of the present utility model provides a physical defoaming device with an integral bracket 2, which includes a defoaming impeller 9 for eliminating foam and a motor 1 for driving the defoaming impeller 9 to rotate. The impeller connecting shaft 4 of the defoaming impeller 9 is coaxially connected with the motor shaft of the motor 1. The device further includes a bracket 2 for supporting the motor 1 and a rolling bearing 5 for preventing liquid from entering the motor 1. The bracket 2 has a liquid-blocking chamber for arranging the rolling bearing 5, and the bracket 2 extends into the liquid-blocking chamber to form a housing 15 for the rolling bearing 5, and the rolling bearing 5 is arranged in the housing 15. In this embodiment, the defoaming impeller 9 can physically eliminate foam, and by using the bracket 2, it not only plays a role in supporting the motor 1, provides space for the installation of the rolling bearing 5, but also serves as the housing 15 for the rolling bearing 5, enabling the rolling bearing 5 to operate smoothly and reliably, reducing processing costs, and facilitating installation and use. Specifically, the bracket 2 is detachably installed between the motor 1 and the mounting base 8 and can be disassembled and assembled as needed. The bracket 2 is in a cylindrical structure, which can be a circular cylinder or a square cylinder, so that a liquid-blocking chamber can be formed inside it for arranging the liquid-blocking component. The liquid-blocking component can prevent liquid from entering the motor 1 and damaging the motor 1. The motor 1 can be one of a power frequency motor 1, a variable frequency motor 1, an explosion-proof and a non-explosion-proof one, and an efficient and a common type one. The bracket 2 and the housing 15 of the rolling bearing 5 are cast integrally, providing space for the installation of the rolling bearing 5, reducing production and processing costs, having good concentricity, and having a stop on both the upper and lower surfaces to enable concentric installation of the motor 1 and the mounting base 8, and this part provides space for installing a mechanical seal. The impeller connecting shaft 4 is clamped in one piece at a time, and the whole shaft is machined by turning at one time. The impeller connecting shaft 4 solves the reliable connection between the motor 1 and the defoaming impeller 9, has good concentricity, and the device operates reliably and smoothly. The length of the impeller connecting shaft 4 can also be customized according to the on-site environment. The defoaming impeller 9 can be a single one or a combination of multiple impellers. The impeller can be an axial flow type impeller or a fan type impeller. In addition, the impeller can be a plate welded impeller or a cast impeller, and this embodiment does not limit this.

[0021] Please refer to Figure 1 and Figure 2 , the rolling bearing 5 is an angular contact ball bearing or a deep groove ball bearing, and the rolling bearing 5 is arranged on the impeller connecting shaft 4. The rolling bearing 5 can adopt an angular contact ball bearing or a deep groove ball bearing, which can balance axial force and radial force at the same time. The angular contact ball bearing or the deep groove ball bearing can be arranged in the housing 15. The housing 15 can be an oil seal to prevent oil leakage and liquid from rising. The rolling bearing 5 can support the impeller connecting shaft 4, reduce friction and wear, and reduce noise. The housing 15 can be made in batches with the support frame or formed integrally.

[0022] Please refer to Figure 1 and Figure 2, the device further includes a mechanical seal structure 6 provided on the impeller connecting shaft 4, and at least a part of the mechanical seal structure 6 is disposed in the liquid retaining chamber. In this embodiment, a cartridge seal can be used for the mechanical seal to reduce the installation difficulty. The rising liquid in the seal cavity is blocked by an O-ring, and a seal is formed through the high-speed rotational friction of the sealing surface to prevent liquid leakage from polluting the environment.

[0023] Please refer to Figure 1 and Figure 2 , the device further includes a coupling 3 for connecting the impeller connecting shaft 4 and the shaft of the motor 1. The coupling 3 is located in the liquid retaining chamber and above the rolling bearing 5. In this embodiment, the coupling 3 is used to connect the shaft of the motor 1 and the impeller connecting shaft 4, playing the role of transmitting torque and buffering and damping. This part helps to solve the problem that even if the mechanical seal structure 6 leaks, it can block the process medium and foam from leaking into the motor 1, avoiding serious accidents such as burning out of the motor 1.

[0024] Please refer to Figure 1 and Figure 2 , the device further includes a mounting base 8 for supporting the bracket 2, and the defoaming impeller 9 is located below the mounting base 8. In this embodiment, the mounting base 8 can be one of a circular flange, a square flange, and a steel section frame.

[0025] Please refer to Figure 1 and Figure 2 , the device further includes a housing 10 provided below the mounting base 8, and the defoaming impeller 9 is located in the housing 10. In this embodiment, the housing 10 is one of a cylindrical shape and a rectangular shape. Preferably, the bottom of the housing 10 has a suction section 13. A flow guide box body 1512 is provided between the suction section 13 and the housing 10. The suction section 13 is a bell mouth welded to the lower part of the suction pipe, and a cross rib is welded at the bottom to prevent it from deforming, improving the suction efficiency. The flow guide box body 1512 is a plate welded with multiple threaded structures, and a circle of small columns is welded on the upper surface of the suction section 13, and the small columns are threadedly connected to the housing 10. Preferably, a wearing ring 11 is added between the suction pipe and the inner hole cavity of the impeller to prevent wear, increasing the seal at the suction port of the impeller, improving the suction force of the impeller, preventing internal circulation, and increasing the efficiency of the impeller.

[0026] Please refer to Figure 1 and Figure 2, a sliding bearing 7 is further provided on the impeller connecting shaft 4, and the sliding bearing 7 is located between the defoaming impeller 9 and the bracket 2. In this embodiment, the sliding bearing 7 is composed of a box body 15, a wear-resistant bushing, and a shaft sleeve, and realizes the functions of shock absorption and support through the sliding friction between the bushing and the shaft sleeve, and balances the radial force generated during operation. Preferably, the inside of the shaft sleeve is provided on the impeller connecting shaft 4, and spiral water grooves are provided on the outside of the shaft sleeve. The spiral water grooves can collect liquid to a certain extent, act as bearing flushing liquid, and at the same time reduce the amount of liquid leaking from the seal liquid, saving energy.

[0027] Please refer to Figure 1 and Figure 2 , the device further includes an impeller nut 14, and the impeller nut 14 fastens the defoaming impeller 9 on the impeller connecting shaft 4 to ensure its stable and reliable operation and avoid the problem of part detachment during installation and operation.

[0028] The working principle of this device is as follows:

[0029] The installation base 8 of the defoaming device is installed on the top of the container according to the size matching the container, and the motor 1 is firmly connected to the installation base 8 by using the motor bracket 2. The motor 1 drives the defoaming impeller 9 to rotate through the coupling 3, the impeller connecting shaft 4, the rolling bearing 5, the mechanical seal 6, and the sliding bearing 7. After the defoaming impeller 9 rotates, a suction force is formed, and the foam generated on the surface of the container is sucked into the inlet of the defoaming impeller 9 through the suction section 13 arranged along the shape of the container. The defoaming impeller 9 uses the shear force and compression effect generated by the impeller to break the bubbles and separate the gas and liquid. The liquid is thrown towards the housing 10 by inertia force, and the liquid generated after defoaming flows into the diversion box body 12 along the housing 10. The diversion box body 12 further dissipates the energy of the fluid after defoaming and disperses it into the container, avoiding conflict with the foam flow, guiding the liquid to flow downward at the same time, and completely isolating the foam flow and liquid flow in the container from the motor 1. Even if the mechanical seal 6 is damaged, the foam flow or liquid flow will be intercepted by the coupling 3 and will not damage the motor 1. A wearing ring 11 is added between the suction port pipe and the inner hole cavity of the impeller, which increases the seal of the impeller suction port, reduces wear, improves the suction force of the impeller, prevents internal circulation, and increases the efficiency of the impeller.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A physical defoaming device with an integral bracket, comprising a defoaming impeller for eliminating foam and a motor for driving the defoaming impeller to rotate. The impeller connecting shaft of the defoaming impeller is coaxially connected to the motor shaft of the motor, and is characterized in that: It further includes a bracket for supporting the motor and a rolling bearing for preventing liquid from entering the motor. The bracket has a liquid-blocking chamber for arranging the rolling bearing, and the bracket extends into the liquid-blocking chamber to form a housing for the rolling bearing, and the rolling bearing is arranged in the housing.

2. The physical defoaming device with an integral bracket according to claim 1, characterized in that: The rolling bearing is an angular contact ball bearing or a deep groove ball bearing, and the rolling bearing is arranged on the impeller connecting shaft.

3. The physical defoaming device with an integral bracket according to claim 1, wherein: It further includes a mechanical seal structure arranged on the impeller connecting shaft, and at least part of the mechanical seal structure is placed in the liquid-blocking chamber.

4. The physical defoaming device with an integral bracket according to claim 1, characterized in that: It further includes a coupling for connecting the impeller connecting shaft and the motor shaft. The coupling is located in the liquid-blocking chamber and above the rolling bearing.

5. The physical defoaming device with an integral bracket as described in claim 1, characterized in that: It further includes a mounting base for supporting the bracket, and the defoaming impeller is located below the mounting base.

6. The physical defoaming device with an integral bracket as described in claim 5, characterized in that: It further includes a housing arranged below the mounting base, and the defoaming impeller is located in the housing.

7. The physical defoaming device with an integral bracket as described in claim 6, characterized in that: The bottom of the housing has a suction section.

8. The physical defoaming device with an integral bracket according to claim 7, characterized in that: A flow guiding housing is arranged between the suction section and the housing.

9. The physical defoaming device with an integral bracket as claimed in claim 7, wherein: A mouth ring is arranged on the suction section.

10. The physical defoaming device with an integral bracket as described in claim 1, characterized in that: A sliding bearing is further arranged on the impeller connecting shaft, and the sliding bearing is located between the defoaming impeller and the bracket.

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