CN220385859U - Self-flushing structure and defoaming device - Google Patents

Abstract

The utility model relates to the technical field of defoaming, and provides a self-flushing structure which comprises a guide piece and a driving piece, wherein one end of the guide piece can extend to a part to be flushed, the driving piece is used for driving flushing liquid to flow to the part to be flushed along the guide piece, the guide piece is in a cover shape, the cover body of the guide piece in the cover shape is a guide surface, and the driving piece is arranged in a section of a cover of the cover body. Still provide a defoaming device, including casing and be used for eliminating the defoaming impeller of foam, defoaming impeller establishes in the casing, and the casing has the suction section that supplies the foam to get into the casing, still includes foretell self-flushing structure, and self-flushing structure establishes in the casing. The self-flushing structure can form a flushing system by itself without depending on the addition of an external flushing system, and the self-flushing structure is used in the defoaming device, so that the cost brought by flushing and cooling by using new water in the existing defoaming device can be saved, the production cost is greatly reduced, and the self-flushing structure is convenient to install and use.

Description

Self-flushing structure and defoaming device

Technical Field

The utility model relates to the technical field of defoaming, in particular to a self-flushing structure and a defoaming device.

Background

In the fields of steel, chemical industry, medicine, food and the like, some foams which are not beneficial to production are easily generated due to chemical mediums adopted by the production requirements. If the foam is not treated effectively in time, the foam will cause harm to the production process and equipment, damage the production equipment, affect the quality of the product, and even reduce the production capacity. For example, in the field of steel plate and strip treatment, it is necessary to provide a degreasing section for cleaning the surface of rolled steel strip containing dirt such as grease, scale powder, iron powder, carbon powder, etc. Because the degreasing agent contains surfactant components, under the influence of stirring and temperature factors, the degreasing agent can wrap air to generate a large amount of foam, and the foam overflows a container to cause damage to a peripheral motor and environmental pollution. The foam overflows into the strip steel cleaning tank to affect the strip steel cleaning effect.

At present, most of industries adopt a mode of adding a chemical defoaming agent to eliminate foam in a medium by changing the surface tension of the foam and reducing the thickness of a foam liquid film. However, the chemical defoamer itself is expensive, and the time for the chemical defoamer to act is limited, so that the chemical defoamer inevitably needs to be added at regular time during production, resulting in higher production cost. In addition, the chemical defoamer is difficult to degrade, the direct discharge mode is easy to pollute the environment, and the treatment cost is high.

In the industry, mechanical defoaming devices are initially tried, when positive and negative pressure is generated in a medium container, high-pressure and high-speed liquid flow and foam flow brought by an impeller can impact a shaft, and the liquid flow and the foam flow enter a motor along a shaft gap, so that the motor is damaged. A seal must be provided to block the flow of liquid and foam into the motor. The most effective and robust of the seal types is the mechanical seal, which requires flushing and cooling with water. If new water is used, the production cost is greatly increased.

Disclosure of Invention

The utility model aims to provide a self-flushing structure and a defoaming device, which can at least solve part of defects in the prior art.

In order to achieve the above object, the embodiment of the present utility model provides the following technical solutions: the utility model provides a from washing structure, includes that one end can extend to wait to wash the water conservancy diversion spare of spare department and be used for driving the flushing fluid along the water conservancy diversion spare flows to wait to wash the driving piece of spare, the water conservancy diversion spare is the cover form, and be the cover form the cover body of water conservancy diversion spare is the guide surface, the driving piece is established in the interval of cover body shroud.

Further, the cover body comprises an arc-shaped plate, and the arc-shaped plate forms the flow guide surface with a smooth curved surface.

Further, the curved plate is curved in a direction away from the driving member.

Further, the device also comprises a liquid storage groove, and the other end of the cover body extends into the liquid storage groove.

The embodiment of the utility model provides another technical scheme that: the utility model provides a defoaming device, includes casing and is used for eliminating the defoaming impeller of foam, defoaming impeller establishes in the casing, the casing has the confession foam gets into the suction section of casing still includes foretell self-flushing structure, self-flushing structure establishes in the casing.

Further, the defoaming device also comprises a motor arranged on the shell, a motor shaft of the motor stretches into the shell, and the defoaming impeller is arranged on the motor shaft.

Further, a sealing structure for sealing the motor shaft is also included.

Further, the sealing structure is a mechanical sealing structure.

Further, a flow guide box body is arranged at the bottom of the shell.

Further, a collar disposed at the suction section is included.

Compared with the prior art, the utility model has the beneficial effects that:

1. the self-flushing structure is adopted to form a flushing system by self, the flushing of the to-be-flushed piece can be realized without depending on the addition of an external flushing system, and the self-flushing structure is used in the defoaming device, so that the cost brought by the need of flushing and cooling by using new water of the existing defoaming device can be saved, the production cost is greatly reduced, and the device is also convenient to install and use.

2. The device can completely eliminate foam generated by chemical media, does not need to additionally add defoamer, and avoids the phenomenon of increased production cost and water treatment cost caused by the defoamer. In addition, the device can effectively isolate the foam impact flow caused by the positive pressure or the negative pressure of the whole or part of the container filled with the chemical medium into the container, is provided with a mechanical seal, forms a seal by utilizing high-speed rotation friction of the sealing surface, can block upward liquid in different states, and avoids damage to a motor.

Drawings

Fig. 1 is a schematic cross-sectional view of a defoaming device (with a self-flushing structure) according to an embodiment of the present utility model;

fig. 2 is a schematic cross-sectional view of a defoaming device according to an embodiment of the present utility model (with a motor shaft lengthened and a self-flushing structure);

fig. 3 is a schematic cross-sectional view of a defoaming device according to an embodiment of the present utility model (with a maintenance-free sealing function);

fig. 4 is a schematic cross-sectional view of a front view of a defoaming device (with a remote defoaming function) according to an embodiment of the present utility model;

fig. 5 is a schematic cross-sectional view of a front view of a defoaming device according to an embodiment of the present utility model (having a maintenance-free sealing function and a remote defoaming function);

Fig. 6 is a schematic diagram of a top view of a defoaming device according to an embodiment of the present utility model;

FIG. 7 is a schematic side view of an electromagnetic filter according to an embodiment of the present utility model;

fig. 8 is a schematic top view of an electromagnetic filter according to an embodiment of the present utility model;

fig. 9 is a schematic front view of an electromagnetic filter according to an embodiment of the present utility model;

FIG. 10 is a schematic diagram of a system for treating iron sludge according to an embodiment of the present utility model;

FIG. 11 is a top view of FIG. 10;

fig. 12 is a schematic structural view of an iron mud collecting tank according to an embodiment of the present utility model.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Embodiment one:

referring to fig. 1, 2 and 6, an embodiment of the present utility model provides a self-flushing structure, which includes a guide member 200 that can extend to a portion to be flushed and a driving member for driving flushing fluid to flow along the guide member 200 to the portion to be flushed, wherein the guide member 200 is in a shape of a cover, a cover body of the guide member 200 in a shape of a cover is a guide surface, and the driving member is disposed in a region covered by the cover body. In this embodiment, the guide member 200 is designed to be a cover, and the member to be rinsed can be disposed at the center of the guide member 200, so that the rinsing liquid driven by the driving member can flow along the cover toward the member to be rinsed, thereby achieving the effect of rinsing the member to be rinsed. And because the cover is adopted, the water-cooling type water-cooling device can have a wider range of diversion surfaces, thereby achieving better flushing effect. The purpose of flushing may be decontamination or cooling. The driving piece is arranged in the interval of the cover cap of the cover body, so that the structure is more compact on one hand, and more driving modes of different types are convenient to design on the other hand.

Referring to fig. 1, 2 and 6, the driving member includes a secondary impeller 14 for generating suction, and the secondary impeller 14 is installed directly under the casing. In this embodiment, when the impeller 14 rotates, a certain suction force is formed in the housing to suck the rinse liquid up the housing, and when the rotation speed is very fast, the sucked rinse liquid flows along the extending direction of the housing and then flows onto the member to be rinsed. Of course, this is one of the driving modes, but it is also possible to use a structure having suction force such as a pump to suck the rinse liquid to guide it onto the member to be rinsed, and this embodiment is not limited thereto.

Referring to fig. 1, 2 and 6, the cover includes an arcuate plate, and the arcuate plate forms the flow guiding surface with a smooth curved surface. In this embodiment, the arcuate guide surface is used to facilitate "climbing" of the rinse solution onto the member to be rinsed.

Further to the above, referring to fig. 1, 2 and 6, the curved plate is curved in a direction away from the driving member. In the embodiment, the whole arc plate is in an outward expansion mode, just like a pot cover, the arc plate is covered, and the rising of flushing fluid and the diversion of the flushing fluid are facilitated. Of course, reverse bending is also possible, which is not limited by this embodiment.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 1, 2 and 6, the arcuate plates have a plurality of arcuate plates, and two adjacent arcuate plates are spliced. In this embodiment, the cover may be formed by splicing multiple plates, for example, by welding, or in other splicing modes, which is beneficial for transportation and assembly. The assembly is preferably in a sealed state. Of course, if one plate is integrally formed, the effect is better. The splicing mode can adopt welding, bonding and the like.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 1, 2 and 6, the cover body includes a flat plate that is obliquely arranged, and an inclined surface of the flat plate is the flow guiding surface. In this embodiment, instead of using an arcuate plate, it is also possible to use an inclined plate, which also facilitates the "climbing" of the flushing liquid up the plate onto the piece to be flushed.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 1, 2 and 6, the flat plate has a plurality of flat plates, and two adjacent flat plates are spliced. In this embodiment, the plate may be a plurality of plates, and may be integrally formed by splicing.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 1, 2 and 6, the device further includes a liquid storage tank 201, and the other end of the cover extends into the liquid storage tank 201. In this embodiment, when the defoaming impeller 13 attracts foam into the housing 5 and defoaming is performed, a portion of the liquid medium that hits the inner wall of the housing 5 enters the liquid reservoir 201, thereby facilitating the supply of the liquid medium to the flow guide 200.

As an optimization of the embodiment of the present utility model, referring to fig. 1, 2 and 6, the secondary impeller 14 has a flow channel through which a liquid medium passes. In this embodiment, the secondary impeller 14 also has a flow passage for the liquid medium to pass through, so as to facilitate the rising of the liquid medium.

Embodiment two:

referring to fig. 1, 2 and 6, an embodiment of the present utility model provides a defoaming device, which includes a housing 5, a defoaming impeller 13 for eliminating foam, the defoaming impeller 13 is disposed in the housing 5, the housing 5 has a suction section 17 for allowing foam to enter the housing 5, and the self-flushing structure 20 is further included, and the self-flushing structure 20 is disposed in the housing 5. In this embodiment, the self-flushing structure 20 is arranged in the housing 5, so that the defoaming device has the capability of self-flushing the component for driving the defoaming impeller 13 to rotate, no external pipeline is required for flushing, the installation difficulty is reduced, and the energy is saved. Preferably, the housing 5 may take one of a cylindrical shape and a rectangular shape. Preferably, the defoaming impeller 13 may be one or more combined type impellers, which may be of the axial flow type or of the fan type. In addition, the impeller can be a plate-type welded impeller or a cast impeller. The suction section 17 is welded with a horn mouth below the suction pipeline, so that the suction area is enlarged, and the suction efficiency is improved.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 1, 2 and 6, the motor further includes a motor 10 disposed on the housing 5, a motor shaft 100 of the motor 10 extends into the housing 5, and the defoaming impellers 13 are all mounted on the motor shaft 100. In the present embodiment, when the above-described driving member employs the sub-impeller 14, the sub-impeller 14 is also mounted on the motor shaft 100. The component for driving the defoaming impeller 13 to rotate can be a motor 10, and the auxiliary impeller 14 and the defoaming impeller 13 can be driven to rotate by the motor 10. After the foam is removed by the defoaming impeller 13, the auxiliary impeller 14 also attracts the liquid medium to rise to the flow guiding piece 200, the liquid medium on the flow guiding piece 200 flows down after flowing onto the piece to be flushed, and then the defoamed liquid medium below is mixed again and is attracted and rises again, so that the self-circulation flushing of the piece to be flushed is realized. Preferably, the motor 10 may be one of a power frequency motor 10 and a variable frequency motor 10, one of explosion-proof and non-explosion-proof, and one of efficient and general type. And clamping the whole motor shaft 100 at one time, and turning the whole motor shaft at one time. The part successfully solves the problem of reliable connection between the motor 10 and the defoaming impeller 13, has good concentricity and reliable and stable operation of the device.

As an optimization of the embodiment of the present utility model, referring to fig. 1, 2 and 6, the sealing structure 18 is further included for sealing the motor shaft 100. In this embodiment, the sealing structure 18 is used to seal the motor 10 in order to avoid damage to the motor 10 caused by liquid entering the motor 10.

Further optimizing the above technical solution, referring to fig. 1, 2 and 6, the sealing structure 18 is a mechanical sealing structure 18, and the flow guiding member 200 extends to the mechanical sealing structure 18. In this embodiment, the mechanical seal structure 18 may be adopted as the sealing manner, and the mechanical seal structure 18 is the most effective and stable one in the sealing manner, but the mechanical seal needs to be washed and cooled, and in this embodiment, the medium to be defoamed may be just adopted to flow to the mechanical seal structure 18 along the flow guiding element 200 for cooling, and the above-mentioned element to be washed may be the mechanical seal structure 18 here, so that new water is not needed to be adopted for cooling any more, and the production cost can be greatly saved. In addition, the flow guiding member 200 covers the medium, and can also cooperate with the sealing structure 18 to play a certain role in sealing, because the self-circulation flushing is realized, meanwhile, the liquid is guided to flow downwards, the foam flow and the liquid flow in the container are completely isolated from the motor 10, and the foam flow or the liquid flow caused by the positive pressure or the negative pressure formed by the easily foaming medium in the container cannot damage the motor 10. Preferably, the mechanical seal may comprise one of a non-containerized mechanical seal and an containerized mechanical seal. The function of which is to effectively seal off the foam flow and the medium flow along the shaft into the motor 10 or the external environment.

Further optimizing the above technical solution, referring to fig. 1, 2 and 6, the sealing box 19 is disposed outside the mechanical sealing structure 18, and the flow guide 200 passes through the sealing box 19 to the mechanical sealing structure 18. The sealing box 19 is adopted outside the mechanical sealing structure 18, so that the sealing effect can be improved.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 1, 2 and 6, a flow guiding box 16 is disposed at the bottom of the housing 5. In this embodiment, the motor 10 drives the defoaming impeller 13 to rotate through the motor shaft 100, the sealing structure 18 and the auxiliary impeller 14, the defoaming impeller 13 rotates to form suction force, foam generated on the surface of the container is sucked into the inlet of the defoaming impeller 13 through the suction section 17 arranged along the shape of the container, the defoaming impeller 13 breaks the foam by utilizing shearing force and compression effect generated by the impeller, gas and liquid are separated, liquid is thrown to the shell 5 along with inertia force, the liquid generated after defoaming flows into the flow guiding box 16 along the shell 5, and the flow guiding box 16 further dissipates energy of the fluid after defoaming and simultaneously disperses the fluid into the container, so as to avoid collision with foam flow. Preferably, the baffle box 16 is a plate welded multi-piece threaded structure. The upper surface of the suction section 17 is welded with a circle of cylinder which is connected with the shell 5 by screw threads.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 1, 2 and 6, the liquid storage tank 201 is provided on the housing 5, and when the foam is sucked into the housing 5 by the foam-removing impeller 13 and is removed, a part of the liquid medium that hits the inner wall of the housing 5 enters into the liquid storage tank 201, and the part of the liquid medium flows to the sealing structure 18 along the flow guiding member 200 to wash and cool the sealing structure 18.

As an optimization of the embodiment of the present utility model, referring to fig. 1, 2 and 6, the present utility model further includes a collar 15 disposed at the suction section 17. In the embodiment, the opening ring 15 is added between the suction inlet and the inner cavity of the defoaming impeller 13, so that the sealing of the suction inlet of the defoaming impeller 13 is increased, the abrasion is lightened, the suction force of the defoaming impeller 13 is improved, the inner circulation is prevented, and the efficiency of the defoaming impeller 13 is increased.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 1, 2 and 6, the motor 10 is disposed on a mounting base 11, and the mounting base 11 is disposed above the housing 5. The mounting base 11 is mounted on top of the container in a size matching the container, and the motor 10 is directly connected to the mounting base 11, reducing the weight and volume of the device. Preferably, the mounting base 11 may be one of a circular flange, a square flange, and a steel frame.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 1, 2 and 6, the end of the motor shaft 100 away from the motor 10 is provided with a sliding bearing 6. In this embodiment, when the foam to be sucked is in a deeper position, a sliding bearing 6 may be provided at the shaft end to ensure stable and reliable operation of the shaft and parts thereon, when it is desired to lengthen the motor shaft 100 or the impeller connecting shaft 12. Preferably, the sliding bearing 6 comprises a box body, a wear-resistant bushing and a shaft sleeve, and the radial force generated by unstable rotation of a long shaft or during running is balanced through the effects of shock absorption and support realized by sliding friction between the bushing and the shaft sleeve. This part is fixed by welding brackets in the suction section 17.

Embodiment III:

referring to fig. 3 and 6, an embodiment of the present utility model provides a maintenance-free defoaming device, which is configured to perform deformation based on the defoaming device, eliminate a self-flushing structure 20, and add a maintenance-free sealing assembly 30, specifically, the device includes a housing 5, a defoaming impeller 13 for eliminating foam, and a motor 10 for driving the defoaming impeller 13 to rotate, wherein the defoaming impeller 13 is disposed in the housing 5, and the defoaming impeller 13 is coaxially connected with a motor shaft 100 of the motor 10, the housing 5 has a suction section 17 for allowing foam to enter the housing 5, and further includes a maintenance-free sealing assembly 30 for sealing the motor shaft 100, and the maintenance-free sealing assembly 30 is disposed on a side of the defoaming impeller 13 away from the suction section 17. In this embodiment, the maintenance-free seal assembly 30 prevents the ingress of liquid medium into the motor 10 from burning the motor 10.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 3 and 6, the maintenance-free sealing assembly 30 includes a dynamic ring and a static ring, and a gravity block that can drive the dynamic ring to abut against the motor shaft 100 when the static ring is stationary. In this embodiment, when the device stops running, the gravity block can make the dynamic and static rings fit the motor shaft 100 to realize stop sealing.

Further optimizing the above scheme, please refer to fig. 3 and 6, further comprising a secondary impeller 14 capable of generating a pressure opposite to the defoaming impeller 13, wherein the secondary impeller 14 is mounted on the motor shaft 100. In this embodiment, when the device works, the gravity block rotates to drive the static and dynamic rings, so that the static and dynamic rings are separated from the motor shaft 100, and the auxiliary impeller 14 works at this time, because the pressure direction of the static and dynamic rings is opposite to that of the defoaming impeller 13, the high-pressure medium is prevented from leaking into the sealing cavity where the maintenance-free sealing device is located when the device works, and the auxiliary impeller 14 matched with the static and dynamic rings can also play a role in balancing axial force.

For other structures of the defoaming device, please refer to the above embodiments, and the description thereof will not be repeated here.

Embodiment four:

referring to fig. 4 and 6, an embodiment of the present utility model provides a remote defoaming device, which includes a housing 5, a defoaming impeller 13 for eliminating foam, and a motor 10 for driving the defoaming impeller 13 to rotate, wherein the defoaming impeller 13 is disposed in the housing 5, the housing 5 has a suction section 17 for allowing foam to enter the housing 5, and further includes an impeller connecting shaft 12, the defoaming impeller 13 is disposed on the impeller connecting shaft 12, and the impeller connecting shaft 12 is coaxially connected with a motor shaft 100 of the motor 10 through a coaxial sealing assembly 40. In this embodiment, when the defoaming distance is relatively long, an impeller connecting shaft 12 may be added to mount the defoaming impeller 13, so as to achieve a better defoaming effect. The impeller connection shaft 12 needs to be coaxially connected with the motor shaft 100, and the coaxial sealing assembly 40 can perform a sealing function to prevent the liquid medium from entering the motor 10 to burn the motor 10.

As an optimization of the embodiment of the present utility model, referring to fig. 4 and 6, the coaxial sealing assembly 40 includes a coupling 400, and the impeller connecting shaft 12 and the motor shaft 100 are coaxially connected through the coupling 400. In this embodiment, the coupling 400 connects the motor shaft 100 and the impeller connecting shaft 12, and transmits the power and torque of the motor 10 to the shaft and the parts on the shaft, and meanwhile, the part can also be used as a safety device, so as to prevent the liquid medium from flowing into the motor 10 along the shaft, thereby causing the burning phenomenon of the motor 10.

Further optimizing the above, referring to fig. 4 and 6, the coaxial seal assembly 40 further includes bearings 401 for supporting the motor shaft 100 and the impeller connecting shaft 12. In the present embodiment, the bearing 401 may employ an angular contact ball bearing 401 and a deep groove ball bearing 401, which are capable of balancing both axial force and radial force. The part plays a supporting role on the shaft, reduces friction and abrasion, and reduces noise.

Further optimizing the above, referring to fig. 4 and 6, the coaxial seal assembly 40 further includes a bearing cover 402 for fixing the axial position of the bearing 401, and the bearing cover 402 is located between the coupling 400 and the bearing 401. In the embodiment, an oil cup or an oil injection pipeline and a valve are arranged on the gland, so that lubricating oil can be conveniently supplemented, and meanwhile, one or a combination of a packing seal, a framework oil seal, a labyrinth seal and a dry gas seal is arranged in the inner hole, so that oil leakage is avoided.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 4 and 6, a bearing seal box 403 is disposed outside the impeller connecting shaft 12. In this embodiment, the bearing seal housing 403 cooperates with the bearing gland 402 to isolate the bearing 401 from the external environment to form a closed space, and simultaneously support the bearing 401 to enable stable and reliable operation, the bearing seal housing 403 may be located in a container and in contact with a medium, and may be effectively isolated, and the bearing seal housing 403 may also be located outside the container.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 4 and 6, the sealing structure 18 for sealing is further included, and the sealing structure 18 is disposed on a side of the coaxial sealing assembly 40 near the suction section 17. In this embodiment, besides the above-mentioned coaxial sealing assembly 40, the sealing structure 18 may be used for sealing in a matching manner, and the sealing structure 18 may be used for sealing if the coaxial sealing assembly 40 fails to block the liquid medium, and the sealing structure 18 may also block the liquid medium from the motor 10.

Further optimizing the above scheme, referring to fig. 4 and 6, the sealing structure 18 may be the sealing structure 18 in the second embodiment, and the specific structure thereof will not be described herein.

For other structures of the defoaming device, please refer to the above embodiments, and the description thereof will not be repeated here.

Fifth embodiment:

referring to fig. 5 and 6, an embodiment of the present utility model provides a remote maintenance-free mechanical defoaming device, which is formed by combining the maintenance-free seal according to the third embodiment and the remote defoaming according to the fifth embodiment, so as to form a defoaming device with functions of maintenance-free seal and remote defoaming. Specifically, the device includes casing 5, be used for eliminating foam defoaming impeller 13 and be used for driving defoaming impeller 13 pivoted motor 10, defoaming impeller 13 establishes in casing 5, casing 5 has the confession foam gets into casing 5's suction section 17, still includes impeller connecting axle 12, defoaming impeller 13 establishes on impeller connecting axle 12, impeller connecting axle 12 with motor 10's motor shaft 100 passes through coaxial seal assembly 40 coaxial coupling, in coaxial seal assembly 40 is close to suction section 17's one side still is equipped with maintenance-free seal assembly 30. In this embodiment, when the defoaming distance is relatively long, an impeller connecting shaft 12 may be added to mount the defoaming impeller 13, so as to achieve a better defoaming effect. The impeller connection shaft 12 needs to be coaxially connected with the motor shaft 100, and the coaxial sealing assembly 40 can perform a sealing function to prevent the liquid medium from entering the motor 10 to burn the motor 10. Meanwhile, the maintenance-free sealing assembly 30 is adopted, so that a double sealing effect can be achieved, the sealing performance is greatly improved, and the device also has maintenance-free capability.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 5 and 6, the coaxial seal assembly 40 and the maintenance-free seal assembly 30 can be referred to as a third embodiment and a fourth embodiment, and will not be described herein.

Example six:

referring to fig. 1 to 6, an embodiment of the present utility model provides a defoaming device, which is a deformation performed on the basis of the second embodiment, and a good sealing effect can be achieved by removing the self-flushing structure 20. Specifically, the defoaming device comprises a shell 5, a defoaming impeller 13 for eliminating foam, and a motor 10 for driving the defoaming impeller 13 to rotate, wherein the defoaming impeller 13 is arranged in the shell 5, the shell 5 is provided with a suction section 17 for foam to enter the shell 5, the defoaming device further comprises a secondary impeller 14 capable of generating a pressure direction opposite to that of the defoaming impeller 13, the secondary impeller 14 is arranged on the motor shaft 100, and the secondary impeller 14 is positioned on one side of the defoaming impeller 13 close to the motor 10. In this embodiment, since the pressure direction of the impeller 14 is opposite to the pressure direction generated by the defoaming impeller 13 when the impeller 14 is operated, the high-pressure medium is prevented from leaking to the motor 10 to burn the motor 10, and the impeller 14 can also play a role in balancing the axial force.

For other structures of the defoaming device, please refer to the second embodiment, and the description thereof is omitted.

Embodiment seven:

as shown in fig. 7-9, the present embodiment provides an electromagnetic filter 100, which can be used in the first embodiment described above as the magnetic filter 15 therein.

The electromagnetic filter 100 comprises a filter tank 101, a filter disc 102 and an impurity collector 103, wherein the filter disc 102 comprises an annular bracket 1021, a plurality of electromagnetic chucks 1022 and an electric control unit for controlling the electromagnetic chucks 1022 to be powered off, the electromagnetic chucks 1022 are all arranged on the annular bracket 1021 and are sequentially and annularly distributed along the circumferential direction of the annular bracket 1021, and the annular bracket 1021 is provided with a rotary driving mechanism 105 for driving the rotary driving mechanism to rotate; the ring-shaped holder 1021 is partially located in the filtering tank 101, and the impurity collector 103 is disposed outside the filtering tank 101 and includes an impurity removing portion for driving impurities away from the electromagnetic chuck 1022.

In one embodiment, the annular support 1021 includes an inner ring frame and an outer ring frame, which are connected by a plurality of spokes, each spoke correspondingly dividing an annular area between the inner ring frame and the outer ring frame into a plurality of suction cup mounting positions, each suction cup mounting position being provided with an electromagnetic suction cup 1022.

Wherein, optionally, as shown in fig. 10, the spokes are distributed along the radial direction of the annular support 1021, and the inner ring frame-spoke-outer ring frame connection is formed in a hub shape.

The electromagnetic chuck 1022 is preferably removably mounted to the annular support 1021, including but not limited to by screw attachment.

The surface of the electromagnetic chuck 1022 is preferably coplanar with the corresponding side surface of the annular bracket 1021, so that impurities on the electromagnetic chuck 1022 can be removed conveniently, and dirt can be prevented from being accumulated due to the fact that corners are formed between the electromagnetic chuck 1022 and the annular bracket 1021.

Preferably, the annular support 1021 is connected to the rotation driving mechanism 105 through a support rotation shaft 104, and the rotation driving mechanism 105 drives the support rotation shaft 104 to rotate, so as to drive the annular support 1021 and the electromagnetic chuck 1022 on the annular support 1021 to rotate.

In one embodiment, the rotary driving mechanism 105 adopts a structure of a motor and a transmission assembly, and the transmission assembly can adopt a mode of sprocket transmission, belt pulley transmission and the like; the motor is preferably a variable frequency motor, and the rotation speed of the annular bracket 1021 can be controlled.

Preferably, the electric control unit comprises a plurality of electric control cables and electric control modules, the electric control cables are connected with the electromagnetic chucks 1022 in the same number and in a one-to-one correspondence manner, and each electric control cable is electrically connected with the electric control module.

In one embodiment, the support shaft 104 is a hollow shaft, and each of the electric control cables is routed through the hollow cavity of the support shaft 104. The mode can facilitate the layout of the electric control cable, and has high safety and reliability. Preferably, a wiring hole is formed on the annular bracket 1021 (for example, the inner ring frame) so as to facilitate the electric control cable to enter the bracket rotating shaft 104; a routing channel is also provided in the electromagnetic chuck 1022 to connect the electrical control cable with the coil in the electromagnetic chuck 1022.

Preferably, the annular bracket 1021 is detachably mounted on the bracket rotation shaft 104. In one embodiment, the stent rotation shaft 104 is designed in segments, and the annular stent 1021 is clamped between two rotation shaft segments 1041 of the stent rotation shaft 104 (typically, the inner ring frame is clamped between two rotation shaft segments 1041 of the stent rotation shaft 104); optionally, a shoulder is machined on the rotating shaft segment 1041, two ends of the inner hole of the inner ring frame respectively adopt a stepped hole structure, the journal portion at the end of the rotating shaft segment 1041 is inserted into the large-diameter hole segment in the corresponding side stepped hole structure, and the shoulder portion of the rotating shaft segment 1041 is abutted with the corresponding side end face of the inner ring frame and fixed by screws.

Further, when the shaft segment 1041 is assembled with the inner ring frame, the electromagnetic chuck 1022 may be further clamped between the two, for example, the outer ring wall of the inner ring frame adopts a stepped shaft structure, a clamping groove is formed between the shaft shoulder of one shaft segment 1041 and the large diameter wall body of the stepped shaft type outer ring wall, and the corresponding side end of the electromagnetic chuck 1022 is clamped in the clamping groove. The mode can improve the stability and reliability of installation of the electromagnetic chuck 1022, and particularly when an electric control cable needs to enter the electromagnetic chuck 1022 through the support rotating shaft 104, the structure can ensure the alignment accuracy between the wiring hole on the annular support 1021 and the wiring channel in the electromagnetic chuck 1022, so that faults such as damage to the electric control cable are avoided.

In one embodiment, the electronic control module comprises a central controller and an electrically conductive slip ring, each electronic control cable is connected with a rotor part of the electrically conductive slip ring, and the central controller is connected with a stator part of the electrically conductive slip ring. The rotor portion of the conductive slip ring is preferably mounted on the bracket shaft 104. With this structure, the electromagnetic chucks 1022 can be rotated normally, and reliable control of the power supply and the power failure of each electromagnetic chuck 1022 can be ensured.

Such central controllers include, but are not limited to, PLC controllers.

When the annular bracket 1021 drives each electromagnetic chuck 1022 to rotate, part of the electromagnetic chucks 1022 are immersed into the filter tank 101 from outside the filter tank 101, and part of the electromagnetic chucks 1022 leave the filter tank 101 and swing upwards; for the electromagnetic chuck 1022 on the upper pendulum, ferromagnetic impurities are adsorbed on the surface of the electromagnetic chuck 1022, and the carried liquid and the liquid in the adsorbed impurities can leave the electromagnetic chuck 1022 under the action of gravity, so that the effect of gravity dehydration can be achieved, the water content of the impurities collected in the impurity collector 103 is low, the subsequent treatment of the impurities is convenient, and the loss of the liquid in the filter tank 101 can be reduced.

In one embodiment, as shown in fig. 8 and 9, the filter disc 102 further includes a water blocking ring 1023, the water blocking ring 1023 is coaxially installed on the support shaft 104 and abuts against the disc surface of each electromagnetic chuck 1022, an annular water blocking edge is formed on the outer annular wall of the water blocking ring 1023 in a protruding manner, and the annular water blocking edge and each electromagnetic chuck 1022 enclose to form a water blocking groove. By arranging the water retaining ring 1023, the liquid can be well guided, and the liquid is prevented from entering the bracket rotating shaft 104 and other places to influence the normal operation of the electric control unit.

Among them, the water blocking ring 1023 is preferably provided in two and is arranged on both sides of the ring-shaped supporter 1021.

Preferably, a sealing gasket is sandwiched between the water retaining ring 1023 and the electromagnetic chuck 1022, so as to improve the water retaining effect.

In the impurity collecting station, the method of scraping the impurities on the surface of the electromagnetic chuck 1022 can be adopted, and the method of flushing the surface of the electromagnetic chuck 1022 by high-pressure water or high-pressure air can be adopted.

In one embodiment, as shown in fig. 7 to 9, the impurity removing unit includes a scraper 1031, and the working end of the scraper 1031 is in contact with the disk surface of the electromagnetic chuck 1022 at the impurity collecting position; the impurity collector 103 further includes an impurity collecting receptacle 1032, and the impurity collecting receptacle 1032 is engaged under the scraper 1031. The mode has low energy consumption and high working reliability.

Generally, since both side surfaces of the electromagnetic chuck 1022 can absorb foreign matters, it is preferable to provide the scraper 1031 and the foreign matter collecting groove 1032 on both sides of the annular bracket 1021, respectively; the interval between the working ends of the both side scrapers 1031 is preferably the same as the thickness of the electromagnetic chuck 1022.

Preferably, as shown in fig. 8 and 9, the above-described scraper 1031 is arranged obliquely, so that the scraped foreign substances can be easily dropped into the foreign substance collection groove 1032.

Alternatively, the working end of the above-mentioned scraper 1031 is a top end thereof, which is preferably parallel to the horizontal plane, that is, the contact line of the scraper 1031 with the electromagnetic chuck 1022 is parallel to the horizontal plane, which may facilitate the arrangement of the scraper 1031, the impurity collecting tank 1032, etc., and the collection of impurities.

Preferably, the scraper 1031 is a trough plate, and the length direction of the scraper 1031 is defined as the direction from the working end to the impurity collecting receptacle 1032, so that the two lateral ends of the scraper 1031 are respectively extended to form a wing plate, which can better restrain and guide the scraped impurities.

As a preferable solution of this embodiment, as shown in fig. 8 and 9, the filter disc 102 has a plurality of groups, each of the annular holders 1021 is sequentially mounted on the same holder rotation shaft 104, and the holder rotation shaft 104 is connected to the rotation driving mechanism 105. Providing multiple sets of filter discs 102 can improve filtration efficiency and filtration efficiency.

As shown in fig. 8, one impurity collection trough 1032 may be shared between two adjacent filter trays 102.

Preferably, as shown in fig. 8, a plurality of partitions are provided in the filter tank 101, each partition dividing the filter tank 101 into a plurality of liquid storage tanks 1011, and preferably each liquid storage tank 1011 is provided with a filter disc 102; the number of the filter discs 102 and the liquid storage tanks 1011 is preferably the same and arranged in one-to-one correspondence.

In one embodiment, upstream wastewater may be simultaneously introduced into each of the reservoirs 1011.

In other embodiments, the tanks 1011 may be serially connected in sequence, the upstream sewage enters the first tank 1011 first, and the sewage circulates between the upstream tank 1011 and the downstream tank 1011 in an overflow manner, so that the sewage can be treated in a pipeline manner, continuous treatment can be realized, and the treatment effect and efficiency can be ensured. As shown in fig. 8, in the first-stage liquid storage tank 1011, the filter disc 102 is preferably arranged close to the sewage inlet, so that ferromagnetic impurities in the sewage can be captured at the first time, and the electromagnetic filtering effect is improved; in the tail tank 1011, the filter disc 102 is preferably disposed near the filtrate outlet, so that the cleanliness of the discharged filtrate can be improved.

In particular, based on the segmented design of the bracket spindle 104 described above, the installation and placement of each filter tray 102 may be facilitated; the number of the filter discs 102 can be increased or decreased as required, so that the flexibility is very high; and the maintenance of the equipment can be facilitated, for example, the disassembly and assembly of the filter disc 102 at the corresponding liquid storage tank 1011 can be carried out, and the filter treatment in other liquid storage tanks 1011 is not affected.

The method for using the electromagnetic filter 100 includes:

The electromagnetic chucks 1022 are driven to rotate by the annular bracket 1021, so that the electromagnetic chucks 1022 can circularly move among the working position, the water removal position and the impurity removal position,

in the working position, the electromagnetic chuck 1022 is powered and at least partially immersed in the filter tank 101 to adsorb ferromagnetic impurities in the filter tank 101;

in the dehydration position, the electromagnetic chuck 1022 is kept in an electrified state;

in the impurity removal position, the electromagnetic chuck 1022 is de-energized, and impurities are driven off from the electromagnetic chuck 1022 by the impurity removal unit and collected.

Example eight:

the alkali liquor circulation tank 11 is provided with an iron mud treatment subsystem for online cleaning of iron mud impurities in the alkali liquor circulation tank 11, so that the running stability and reliability of the system and the cleaning quality of steel are improved, and the shutdown dredging time and frequency are reduced.

Preferably, the iron sludge treatment subsystem is coupled to the recirculation zone 111.

As shown in fig. 10 and 11, the iron sludge treatment subsystem comprises an intermediate medium circulation mechanism and an iron sludge recovery mechanism, wherein the intermediate medium circulation mechanism comprises a plurality of intermediate mediums 330 capable of extracting iron sludge at the bottom of the lye circulation tank 11, and a medium conveying unit 331, a medium transferring unit 332 and a medium reflux unit 333 which are sequentially connected, the medium conveying unit 331 is communicated with an intermediate medium outlet of the lye circulation tank 11, and the medium reflux unit 333 is communicated with an intermediate medium inlet of the lye circulation tank 11; the iron sludge recycling mechanism includes a flushing unit disposed above the medium relay unit 332 and an iron sludge collection tank 321 disposed below the medium relay unit 332.

In one embodiment, the intermediate medium 330 includes a steel ball for holding the iron mud, so that the iron mud at the bottom of the container can be conveniently carried out. For the iron mud at the bottom of the container, the iron mud is wrapped by steel balls which flow in a laminated way, and the iron mud is taken out of the alkali liquor circulation tank 11 through the medium conveying unit 331; when the surface of the medium steel ball is designed to have a certain roughness, the iron mud wrapping effect can be improved, and in one embodiment, the surface roughness Ra of the medium steel ball is more than or equal to 0.8 mu m, and is more preferably controlled to be less than or equal to 12 mu m.

In one embodiment, as shown in fig. 10, a slope is arranged at the bottom of the lye circulation tank 11, the slope slopes from the middle medium inlet to the middle medium outlet, so that the middle medium 330 can circulate in the container conveniently, for example, medium steel balls can run from the middle medium inlet to the middle medium outlet by means of gravity, and the medium steel balls at the high place can squeeze and drive the medium steel balls at the low place and the iron mud on the slope, so that the bottom of the container is ensured to move all the time based on the circulation of the medium steel balls, the phenomenon of iron mud accumulation can be reduced, the intervention of power equipment can be saved, and meanwhile, the slope is also beneficial to the deposition of the iron mud to the middle medium outlet so that the middle medium 330 can bring the iron mud out conveniently.

In one embodiment, the medium conveying unit 331 described above employs a screw pump or a screw conveyor, which may be disposed obliquely or horizontally depending on the relative positional relationship between the intermediate medium outlet and the medium relay unit 332.

In one embodiment, as shown in fig. 10 and 11, the medium relay unit 332 employs a chain conveyor unit, for example, a drag chain conveyor or a chain conveyor. Accordingly, the media relay unit 332 includes a top link layer 3321 and a bottom link layer 3322.

Wherein the link plate gap of the chain conveyor unit is smaller than the size of the intermediate medium 330, e.g. smaller than the diameter of the medium steel balls.

The medium conveying unit 331 is connected to the upper chain layer 3321, for example, a medium output port of the medium conveying unit 331 is located right above the upper chain layer 3321, and the medium conveying unit 331 can convey the medium 330 onto the upper chain layer 3321; optionally, a hopper is disposed above the upper chain layer 3321, through which the intermediate medium 330 outputted from the medium conveying unit 331 is received and transferred onto the upper chain layer 3321, and it is possible to avoid a situation in which the intermediate medium 330 is ejected out of the upper chain layer 3321 due to an excessively large drop distance.

Wherein the medium return unit 333 is arranged at the outlet side of the chain conveyor unit. Optionally, the above-mentioned medium return unit 333 employs a conveyor table for transporting the cleaned intermediate medium 330 back to the lye circulation tank 11.

The flushing unit is used for flushing the intermediate medium 330 on the medium transferring unit 332, so that the separation of the iron mud and the intermediate medium 330 can be realized. In one embodiment, as shown in fig. 11, the flushing unit includes a flushing pipe 351, at least one set of spraying structures may be disposed at the bottom of the flushing pipe 351, and when there are a plurality of sets of spraying structures, the spraying structures are sequentially disposed along the conveying direction of the intermediate medium 330; each set of spray structures includes at least one nozzle, and when there are a plurality of nozzles in the spray structures, the nozzles in the spray structures are preferably arranged in sequence along the width direction of the medium relay unit 332.

Further, as shown in fig. 11, the above-mentioned rinsing unit further includes a rinsing liquid supply pipe 352, and the rinsing liquid supply pipe 352 is connected to the rinsing pipe 351 for supplying rinsing liquid. Preferably, the surface water of the lye circulation tank 11 is used as the rinse liquid, and accordingly, the above-mentioned rinse liquid supply pipe 352 is connected to the upper portion of the lye circulation tank 11.

The rinse liquid may exit through both sides of the media relay unit 332, and/or the media relay unit 332 may be a hollow-out type conveying device, such as may exit through a flight gap of the chain type conveying unit. In one embodiment, as shown in fig. 10 and 12, the iron sludge recycling mechanism further includes a drainage unit 322, the drainage unit 322 is disposed between the upper chain layer 3321 and the lower chain layer 3322 of the medium relay unit 332, a top inlet of the drainage unit 322 is located directly below the flushing unit, and a bottom outlet of the drainage unit 322 is located directly above the iron sludge collection tank 321. Based on the design, the flushing liquid can be reliably drained into the iron mud collecting box 321, so that the field environment is cleaner; at the same time, the flushing water carrying the iron sludge is prevented from polluting the lower chain layer 3322, so that the working reliability of the medium transfer unit 332 is correspondingly improved, and the maintenance frequency of the medium transfer unit is reduced.

Preferably, as shown in fig. 10 and 12, the drainage unit 322 has an inverted Y-shaped structure, and forms a drainage inlet pipe and two drainage outlet pipes; the two drainage outlet pipes can ensure the drainage efficiency and effect of flushing liquid on one hand, and on the other hand, the arrangement of the lower chain layer 3322 is also convenient, for example, the lower chain layer 3322 is positioned between the two drainage outlet pipes.

Wherein the upper strand layer 3321 may be disposed in the drainage inlet tube so that the intermediate medium 330 and the iron sludge splashed by the high-pressure jet can be captured well.

Preferably, as shown in fig. 10 and 12, the drainage unit 322 is integrally connected to the iron mud collection tank 321, and for example, an outer frame 3221 of the drainage unit 322 having the inverted Y-shaped structure is integrally formed with the iron mud collection tank 321 to form a top-closed tank, and an inverted V-shaped mud guard 3222 is provided in the tank to form an inner frame of the drainage unit 322.

In one embodiment, a protective screen 323 is further disposed around the winding layer 3321 of the medium relay unit 332, and a protective area of the protective screen 323 covers at least a flushing area of the winding layer 3321. By providing the protection net 323, the high-pressure jet stream can be prevented from ejecting the intermediate medium 330 out of the medium relay unit 332.

The protection net 323 can perform side protection, optionally, the protection net 323 includes two-sided side wall net plates 3231, and the two-sided side wall net plates 3231 are separately arranged at two sides of the conveying channel of the medium transfer unit 332; the side screen 3231 is preferably not movable with the media relay unit 332, for example, it is mounted by a screen bracket, and for the above-described arrangement with the drainage unit 322, the side screen 3231 may be mounted on the outer frame 3221 of the drainage unit 322.

And/or, the protection net 323 may perform upper protection, and optionally, the protection net 323 includes a top net plate 3232, and the top net plate 3232 is disposed above the medium relay unit 332; the top mesh plate 3232 is preferably not movable with the medium relay unit 332, and the installation manner of the top mesh plate 3231 can be used as a reference.

Further optimizing the above-mentioned iron sludge treatment subsystem, as shown in fig. 10 and 11, the iron sludge recycling mechanism further comprises a filtering unit, and the iron sludge collecting tank 321 is provided with a washing liquid recycling pipe connected to the filtering unit.

Optionally, the filtrate from the filtration unit may be reused as flushing fluid, for example, the filtrate outlet pipe of the filtration unit may be connected to a flushing fluid reservoir to which the flushing fluid supply pipe 352 is also connected. When the rinsing liquid adopts surface water of the lye circulation tank 11, the filtrate produced by the filtering unit may be refluxed into the lye circulation tank 11, and correspondingly, a filtrate outlet pipe of the filtering unit is connected with the lye circulation tank 11.

Wherein, the iron mud collecting tank 321 can adopt overflow mode to control the direction of the flushing liquid, and the flushing liquid recycling pipe is connected at the overflow liquid level of the iron mud collecting tank 321. Heavier impurities are deposited at the bottom of the iron sludge collection bin 321 and may be cleaned periodically or aperiodically.

In one embodiment, the filtering unit comprises electromagnetic filtering equipment for removing ferromagnetic impurities in the flushing liquid, and the ferromagnetic impurities suspended in the flushing liquid can be reliably adsorbed and removed; the electromagnetic filter device is preferably an electromagnetic filter 100 provided in the third embodiment described above.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A self-flushing structure, characterized in that: the flushing device comprises a guide piece and a driving piece, wherein one end of the guide piece can extend to the position of the flushing piece, the driving piece is used for driving flushing liquid to flow to the position of the flushing piece along the guide piece, the guide piece is in a cover shape, the cover body of the guide piece is in a cover shape and is a guide surface, and the driving piece is arranged in an interval of the cover body cover.

2. The self-flushing structure of claim 1, wherein: the cover body comprises an arc-shaped plate, and the arc-shaped plate forms the diversion surface with a smooth curved surface.

3. The self-flushing structure of claim 2, wherein: the curved plate is curved in a direction away from the driving member.

4. The self-flushing structure of claim 1, wherein: the cover also comprises a liquid storage tank, and the other end of the cover body extends into the liquid storage tank.

5. The utility model provides a defoaming device, includes the casing and is used for eliminating the defoaming impeller of foam, defoaming impeller establishes in the casing, the casing has the confession foam gets into the suction section of casing, its characterized in that: further comprising a self-flushing structure as recited in any one of claims 1-4, said self-flushing structure being disposed in said housing.

6. The de-foaming apparatus of claim 5, wherein: the defoaming device is characterized by further comprising a motor arranged on the shell, a motor shaft of the motor stretches into the shell, and the defoaming impeller is arranged on the motor shaft.

7. The de-foaming apparatus of claim 6, wherein: and the motor shaft also comprises a sealing structure for sealing the motor shaft.

8. The de-foaming apparatus of claim 7, wherein: the sealing structure is a mechanical sealing structure.

9. The de-foaming apparatus of claim 5, wherein: the bottom of the shell is provided with a diversion box body.

10. The de-foaming apparatus of claim 5, wherein: and the mouth ring is arranged at the suction section.