CN210251335U - Impeller of centrifugal degasser and centrifugal degasser - Google Patents

Abstract

The present disclosure relates to an impeller of a centrifugal degasser and a centrifugal degasser, the impeller comprising a base disc (51) rotating around a main central axis of the centrifugal degasser and blades (52) arranged on the base disc (51), the base disc (51) being provided with a plurality of through holes (511) running axially therethrough, the blades (52) being adapted to be arranged in a gas-liquid separation chamber (21) and a discharge chamber (31) of the centrifugal degasser to form a liquid ring of liquid in the gas-liquid separation chamber (21) and to discharge liquid in the discharge chamber (31) from a discharge nozzle (32) during rotation around the main central axis. Through above-mentioned technical scheme, the centrifugal degasser's that this disclosure provided impeller can solve the comparatively complicated, the higher technical problem of manufacturing cost of impeller structure.

Description

Impeller of centrifugal degasser and centrifugal degasser

Technical Field

The disclosure relates to the fields of food and chemical industry, in particular to an impeller of a centrifugal degasser and the centrifugal degasser.

Background

In the industrial fields of food and chemical industry, air or special gas is inevitably mixed in the liquid material during the production process, which has different adverse effects on the product quality and the working procedures such as heat treatment, and the gas mixed in the material needs to be removed in order to improve the product quality and realize good processing working conditions.

The impeller of the existing centrifugal degasser is generally complex in structure and high in manufacturing cost in order to realize the integration of degassing and conveying.

SUMMERY OF THE UTILITY MODEL

The purpose of the present disclosure is to provide an impeller of a centrifugal degasser and the centrifugal degasser, wherein the impeller of the centrifugal degasser can solve the technical problems of complex impeller structure and high manufacturing cost of the centrifugal degasser.

In order to achieve the above object, the present disclosure provides an impeller of a centrifugal degasser, the impeller comprising a base plate rotating around a main central axis of the centrifugal degasser and blades arranged on the base plate, the base plate being provided with a plurality of through holes running axially therethrough, the blades being adapted to be arranged in a gas-liquid separation chamber and a discharge chamber of the centrifugal degasser so as to form a liquid ring with liquid in the gas-liquid separation chamber and to discharge liquid in the discharge chamber from a discharge nozzle during rotation around the main central axis.

Optionally, the number of said vanes is plural, the plural vanes being arranged in an annular array about said main central axis.

Optionally, the blade comprises an outer blade portion having opposite first and second ends along the main central axis, the first end being connected to the base plate and formed with a discharge blade portion adapted to be disposed in the discharge chamber, the second end being formed with a separation blade portion adapted to be disposed in the gas-liquid separation chamber.

Optionally, the discharge vane portions extend outwardly in a radial direction perpendicular to the main central axis.

Optionally, the discharge vane portion extends coplanar with the main central axis.

Optionally, the separating blade portions extend outwardly in a radial direction perpendicular to the main central axis.

Optionally, the separating blade portion extends coplanar with the main central axis.

Optionally, the discharge vane portions have a larger dimension in the radial direction than the separating vane portions.

Optionally, the blade comprises an inner blade portion connected inside the outer blade portion and extending in a radial direction perpendicular to the main central axis to form a sealing blade portion.

Optionally, the inner edge of the outer sheet portion is formed with a plurality of openings such that the inner edge of the blade is configured with a saw tooth structure.

Optionally, the through hole is disposed near a center of the chassis.

Optionally, a plurality of said through holes are in an annular array about said main central axis.

On the basis of the technical scheme, the present disclosure also provides a centrifugal degasser, which comprises the impeller in the technical scheme.

Through the technical scheme, the rotation of the base plate of the impeller can drive the blades to rotate, so that power is provided for the rotation of the mixed materials in the gas-liquid separation cavity, and the mixed materials in the gas-liquid separation cavity can do high-speed centrifugal motion; the rotation of the blades drives the mixed materials in the gas-liquid separation cavity to rotate at a high speed, liquid in the mixed materials forms a liquid ring rotating at a high speed, and the separation of gas is accelerated, so that the gas-liquid separation efficiency is improved; and in the process that the mixed material is positioned in the gas-liquid separation cavity for centrifugal motion, the through holes on the chassis of the impeller can balance the pressure imbalance at two sides of the chassis caused by the high-speed rotation of the chassis. The centrifugal degasser provided by the present disclosure comprises the impeller of the centrifugal degasser described in the above technical solutions, has the same technical effects as the impeller, and is not described herein in detail in order to avoid unnecessary repetition.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a front view of a centrifugal degasser in an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a left side view of a centrifugal degasser in an embodiment of the present disclosure;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3, illustrating a cross-sectional view of an impeller in one embodiment of the present disclosure;

FIG. 5 is a schematic diagram of the construction of an impeller for a centrifugal degasser in accordance with another embodiment of the present disclosure.

Description of the reference numerals

11-feed chamber, 12-feed orifice, 13-inner wall, 14-outer wall, 15-front end cap, 16-throttle guide plate, 17-flange, 21-gas-liquid separation chamber, 22-degassing housing, 23-seal cap, 24-first end cap, 241-flange, 31-discharge chamber, 32-discharge orifice, 33-discharge housing, 34-rear end cap, 4-vent-pipe, 41-inlet end, 42-vent-end, 51-base plate, 511-through hole, 52-blade, 521-discharge blade, 522-separation blade, 523-seal blade, 524-opening, 61-cooling chamber, 62-coolant inlet, 63-coolant outlet, 64-cooling housing, 7-rotating shaft and 8-bracket.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless stated to the contrary, the use of the terms "inner and outer" in the orientation refers to inner and outer relative to the main central axis, wherein the direction of approach is inward and the direction of departure is outward; "front and back" are defined based on the direction of flow of the liquid in the mixed material, considering that the liquid flows from front to back; terms such as "first," "second," and the like, are used herein to distinguish one element from another, and are not necessarily sequential or significant. Furthermore, in the following description, when referring to the drawings, like reference numbers in different drawings denote like elements.

Centrifugal degasser

According to a first aspect of the present disclosure, there is provided a centrifugal degasser for separating gas from liquid in a gas-liquid mixed material. One embodiment of which is shown in fig. 1-4. With reference to fig. 1 to 4, the centrifugal degasser has a main central axis and comprises: a feed structure defining a feed cavity 11 and comprising a feed nozzle 12 in fluid communication with the feed cavity 11; a degassing structure defining a gas-liquid separation chamber 21 in fluid communication with the feed chamber 11; a discharge structure defining a discharge chamber 31 in fluid communication with the gas-liquid separation chamber 21 and comprising a discharge orifice 32 in fluid communication with the discharge chamber 31; an impeller including a base plate 51 rotating about the main center axis and blades 52 provided on the base plate 51; an exhaust structure including an exhaust pipe 4 communicating with the gas-liquid separation chamber 21; wherein the feeding structure, the degassing structure and the discharging structure are sequentially arranged from front to back, the feeding cavity 11 can be configured as an annular cavity, the feeding direction defined by the feeding pipe orifice 12 can be tangential to the feeding cavity 11, the gas-liquid separation cavity 21 and the discharging cavity 31 can be configured as cylindrical cavities, and the central axes of the feeding cavity 11, the gas-liquid separation cavity 21 and the discharging cavity 31 can be collinear with the main central axis; wherein, a plurality of through holes 511 which are axially through can be arranged on the base plate 51, and the blades 52 can be arranged in the gas-liquid separation chamber 21 and the discharge chamber 31, so that the liquid in the gas-liquid separation chamber 21 forms a liquid ring in the process of rotating around the main central axis, and the liquid in the discharge chamber 31 is discharged from the discharge nozzle 32.

Through above-mentioned technical scheme, in the use of the centrifugal degasser that this disclosure provided, at first, the mixed material enters into feeding chamber 11 by feeding structure's feed pipe mouth 12, because feeding direction is tangent with annular feeding chamber 11 of circle, so, the mixed material can be fast and smoothly convert circular motion into by rectilinear motion after entering feeding chamber 11. Based on the annular structure of the feeding cavity 11, the mixed materials therein can quickly obtain a preset linear velocity and stable circular motion; along with the continuous entering of the mixed materials, the mixed materials flow towards the gas-liquid separation cavity 21; in the gas-liquid separation chamber 21, the plurality of blades 52 are rotated by the rotation of the impeller, thereby accelerating the centrifugal movement of the mixture; the rotation of the blades 52 drives the mixed material in the gas-liquid separation cavity 21 to rotate at a high speed, liquid in the mixed material forms a liquid ring rotating at a high speed, the separation of gas is accelerated, and the gas-liquid separation efficiency is improved; in the process, gas with lower density in the mixed material is separated out from the liquid and is discharged through the exhaust pipe 4, and the residual liquid continues to flow and enters the discharge cavity 31 under the action of the rotation of the impeller; and thereafter discharged through discharge nozzle 32. Wherein, the in-process of mixing material flowing into gas-liquid separation chamber 21 from feeding chamber 11 owing to obtained predetermined linear velocity in feeding chamber 11, consequently, mixing material can be with higher linear velocity to be fused into the liquid ring that is carrying out high-speed centrifugal motion in gas-liquid separation chamber 21, thereby avoids influencing gaseous precipitation effect to the disturbance of original gas-liquid separation face. In addition, during the centrifugal movement of the mixture in the gas-liquid separation chamber 21, the plurality of through holes 511 on the base plate 51 of the impeller can balance the pressure imbalance on the two sides of the base plate 51 caused by the high-speed rotation of the base plate 51.

In particular embodiments of the present disclosure, the feed structure may be configured in any suitable manner. Optionally, the feed structure is configured as a feed structure of a centrifugal degasser provided by the second aspect of the present disclosure.

In embodiments of the present disclosure, the degassing structure and the discharge structure may be configured in any suitable manner. There is a structural affinity between embodiments of the discharge structure and the feed structure and between embodiments of the discharge structure and the degassing structure based on their connection relationship, and therefore, a detailed description of one embodiment of the degassing structure and one embodiment of the discharge structure will be given herein based on the following description of embodiments of the feed structure of a centrifugal degasser according to the second aspect of the present disclosure. In addition, since the gas discharge pipe 4 needs to communicate with the gas-liquid separation chamber 21, a specific embodiment of the gas discharge structure will be described below on the basis of a specific embodiment of the degassing structure.

In particular embodiments of the present disclosure, the impeller may be configured in any suitable manner. Optionally, the impeller is configured as an impeller of a centrifugal degasser provided by the third aspect of the present disclosure.

In embodiments of the present disclosure in which the centrifugal degasser needs to be stable in use, the centrifugal degasser may further comprise a stand 8, as shown with reference to fig. 1, on which stand 8 the centrifugal degasser is supported, placed on a work platform, such as the ground, by means of the stand 8. In particular embodiments of the present disclosure, the centrifugal degasser may be a horizontal mechanism, and in use, it is desirable to have the main central axis direction parallel to the horizontal direction. Furthermore, as shown with reference to fig. 1 to 4, the support 8 provides two bearing positions, one outside the degassing structure of the centrifugal degasser and two outside the discharge structure, to provide a stable and robust support.

The present disclosure will be described in detail below with reference to the accompanying drawings.

Feeding structure of centrifugal degasser

According to a second aspect of the present disclosure, there is provided a feed structure for a centrifugal degasser, one embodiment of which is shown in fig. 1 to 4. Referring to fig. 4, the feeding structure defines a feeding cavity 11 and comprises a feeding spout 12 in fluid communication with the feeding cavity 11, the feeding cavity 11 being configured as an annular chamber, the feeding direction defined by the feeding spout 12 being tangential to the feeding cavity 11.

Through above-mentioned technical scheme, the in-process of the feeding structure of centrifugal degasser that this disclosure provided is using, and the mixed material can enter into feeding chamber 11 via feed pipe mouth 12, because the direction of feed is tangent with annular feeding chamber 11 of circle, so, the mixed material can be fast and smoothly convert circular motion into by rectilinear motion after entering feeding chamber 11. Based on the annular structure of feeding chamber 11, the mixed material wherein can obtain predetermined linear velocity and steady circular motion fast, and then when entering into the gas-liquid separation chamber 21 at rear, owing to obtained predetermined linear velocity in feeding chamber 11, consequently, the mixed material can be with higher linear velocity fuse into the liquid ring that is carrying out high-speed centrifugal motion in the gas-liquid separation chamber 21, thereby avoids influencing gaseous precipitation effect to the disturbance of original gas-liquid separation face.

In a specific embodiment provided by the second aspect of the present disclosure, the feeding structure may include a feeding housing and a front end cover 15, as shown in fig. 1, 3 and 4, the feeding housing may include a cylindrical outer wall 14 and a cylindrical inner wall 13 which are coaxially arranged, the feeding nozzle 12 is connected to the outer wall 14, and the front end cover 15 sealingly connects the outer wall 14 and the inner wall 13 together at a front end to define the feeding cavity 11 with the outer wall 14 and the inner wall 13, as shown in fig. 1, 3 and 4. The size of the annular feeding cavity 11 formed between the outer wall 14 and the inner wall 13 along the central axis direction and the difference between the large diameter size and the small diameter size (i.e. the thickness of the feeding cavity 11) along the radial direction can be set according to actual requirements, so that the flow rate and the production efficiency of materials entering the subsequent gas-liquid separation cavity are controlled.

In order to increase the velocity and pressure of the mixture flowing from the feed chamber 11 into the gas-liquid separation chamber 21, the rear end of the inner wall 13 may alternatively be provided with a throttle guide 16, and a gap may be configured between the outer edge of the throttle guide 16 and the rear end of the outer wall 14, the gap having a width dimension smaller than the radial dimension of the feed chamber 11, as shown with reference to fig. 4. The width size of this clearance is the distance between the rear end of the outer wall 14 and the outward flange of throttle deflector 16, and when the misce bene passed through this clearance, flow velocity can further increase, and in addition, this clearance can also be with the misce bene drainage to the outward flange of liquid ring to avoid the contact gas-liquid separation face of misce bene to cause the splash of liquid. The throttle guide 16 may be disposed between the feed chamber 11 and the gas-liquid separation chamber 21 and configured as a circular baffle extending substantially radially outward, the circular baffle having a diameter smaller than the outer diameter of the feed chamber 11 such that an outer edge thereof is close to the rear end of the outer wall 14 and forms the gap.

In particular embodiments of the present disclosure, the feed nozzle 12 may be configured in any suitable manner. Alternatively, the feed nozzle 12 may be configured as a conical tube structure having a large diameter end and a small diameter end, which may be connected to the outer wall 14 to increase the velocity of the mixed material as it flows from the small diameter end into the feed cavity 11, thereby providing a higher circumferential acceleration as it enters the feed cavity 11 tangentially.

On the basis of the above technical solution, the second aspect of the present disclosure also provides a centrifugal degasser, which comprises the feed structure of the centrifugal degasser of the second aspect of the present disclosure.

Wherein the centrifugal degasser may comprise a degassing structure, as shown with reference to fig. 4, defining a gas-liquid separation chamber 21 in fluid communication with the feed chamber 11, wherein the central axes of the feed chamber 11 and the gas-liquid separation chamber 21 are collinear with the main central axis of the centrifugal degasser, and the outer diameter of the feed chamber 11 may be smaller than the diameter of the gas-liquid separation chamber 21. The centrifugal degasser may further comprise an impeller comprising a base disc 51 rotating around said main central axis and blades 52 arranged on the base disc 51, the blades 52 being arranged in the gas-liquid separation chamber 21 and the discharge chamber 31 to form a liquid ring for the liquid in the gas-liquid separation chamber 21 during rotation around said main central axis and to discharge the liquid in the discharge chamber 31 from the discharge nozzles 32.

Wherein the outer diameter of the feed chamber 11 may be smaller than the diameter of the gas-liquid separation chamber 21, which is beneficial to obtain a higher linear velocity of the mixed material. Referring to fig. 4, because the outer diameter of the feeding cavity 11 is small, the mixed material enters the feeding cavity 11 and then obtains a large centripetal acceleration, and can enter the gas-liquid separation cavity 21 at a high linear velocity and a high discharge pressure, and smoothly merge into the liquid ring according to the rotation directions of the impeller and the liquid ring in the gas-liquid separation cavity 21, so that the impact on the impeller and the unbalanced disturbance caused by the impact are reduced or even avoided, and the vibration and noise brought to the centrifugal degasser are reduced.

In this regard, the centrifugal degasser provided by the first aspect of the present disclosure may also be configured so as to achieve the same effect.

Based on the above-described specific embodiments of the air intake structure of the centrifugal deaerator provided according to the second aspect of the present disclosure, the centrifugal deaerator provided by the first aspect of the present disclosure will be described continuously below.

In one embodiment, the degassing structure may include a cylindrical degassing housing 22 and a sealing cover 23, the degassing housing 22 being connected to a rear end of the outer wall 14, and the sealing cover 23 being connected to a rear end of the inner wall 13 to define a cylindrical gas-liquid separation chamber 21 together with the degassing housing 22, as shown with reference to fig. 4. Since the feed chamber 11 is annular and the gas-liquid separation chamber 23 is cylindrical, the seal cover 23 provided between the rear end of the inner wall 13 and the front end of the degassing shell 22 enables a sealed connection between the inner wall 13 and the gas-liquid separation chamber 21.

In order to achieve a fixed connection between the degassing shell 22 and the feed shell, the front end of the degassing shell 22 may be provided with a first end cap 24, the first end cap 24 may be provided with a flange 241, the rear end of the outer wall 14 may be provided with a flange 17, and the flange 17 and the flange 241 are connected by fasteners, as shown in fig. 1 and 4, so as to achieve a fixed connection between the degassing shell 22 and the outer wall 14 of the feed shell. Furthermore, the first end cap 24 and the flange 17 ensure the sealing between the outer wall 14 and the degassing housing 22, so that air leakage between the outer wall 14 and the degassing housing 22 is avoided.

The liquid ring in the gas-liquid separation chamber 21, which performs high-speed centrifugal motion, has an increased temperature, and it is necessary to cool the liquid in order to prevent the liquid from being deteriorated by high temperature. Therefore, the centrifugal deaerator provided in the first aspect of the present disclosure may further include a cooling structure defining a cooling chamber 61 for flowing a cooling liquid, the cooling chamber 61 surrounding the gas-liquid separation chamber 21 to exchange heat with the liquid in the gas-liquid separation chamber 21 through the cooling liquid, as shown with reference to fig. 4. The cooling chamber 61 surrounding the gas-liquid separation chamber 21 has therein a cooling liquid capable of cooling the liquid in the gas-liquid separation chamber 21. Of course, the mixed materials may be heated by the above-described cooling structure, if necessary.

In particular embodiments provided by the first aspect of the present disclosure, the cooling structure may be configured in any suitable manner. Alternatively, the cooling structure may include a cylindrical cooling housing 64 and a cooling fluid inlet 62 and a cooling fluid outlet 63 provided on the cooling housing 64, and the cooling housing 64 may be sleeved outside the degassing housing 22 to define the cooling chamber 61 together with the degassing housing 22, as shown with reference to fig. 1 and 4. Wherein, the cooling chamber 61 that cooling shell 64 and degasification shell 22 jointly limited is the ring shape, and this ring shape cooling chamber 61 sets up with gas separation chamber 21 is coaxial, and the length along the main central axis direction is the same to make gas separation chamber 21 be wrapped up in cooling chamber 61 completely, gas-liquid separation chamber 21 can fully contact with the coolant liquid in cooling chamber 21, thereby makes the liquid in gas-liquid separation chamber 21 can fully be cooled down. Further, the coolant inlet 62 and the coolant outlet 63 may be respectively disposed below and above the cooling housing 64 in the radial direction of the cooling housing 64 to increase the contact time of the coolant with the gas-liquid separation chamber 21 so that the coolant can sufficiently exchange heat with the gas-liquid separation chamber 21, wherein "above" refers to a direction away from the earth center and "below" refers to a direction close to the earth center; the coolant inlet 62 and the coolant outlet 63 may also be provided at the front end and the rear end of the cooling housing 64, respectively, in the axial direction of the cooling housing 63, so that the coolant can flow from the front to the rear and can flow in the same direction as the liquid in the gas-liquid separation chamber 21. By controlling the flow speed and flow rate of the cooling liquid entering the cooling liquid inlet 62, the contact time of the cooling liquid and the gas-liquid separation chamber 21 can be controlled, so that the cooling liquid can appropriately cool the material in the gas-liquid separation chamber 21.

In addition, the cooling housing 64 can be fixedly connected coaxially to the feed and degassing housings 22 by means of the first end cap 24, as shown in fig. 1 and 4.

In particular embodiments provided by the first aspect of the present disclosure, the discharge structure may be configured in any suitable manner. Alternatively, the discharge structure can include a cylindrical discharge housing 33 and a rear end cap 34, the front end of discharge housing 33 being connected to the rear end of degassing housing 22, and rear end cap 34 being connected to the rear end of discharge housing 33, as shown with reference to fig. 1 and 4, to seal discharge housing 33 at the rear end of discharge housing 33.

In particular embodiments of the present disclosure, the discharge nozzle 32 may be configured in any suitable manner. Alternatively, the discharge direction defined by the discharge nozzle 32 may be parallel to a radial direction perpendicular to the main central axis, as shown with reference to fig. 2 and 3, to increase the discharge pressure. Alternatively, the discharge direction defined by the discharge nozzle 32 may also be tangential to the discharge chamber 31, which is not a limitation of the present disclosure.

In order to increase the discharge pressure in the discharge chamber 31 so as to smoothly discharge the liquid, the diameter of the discharge chamber 31 may be larger than the diameter of the gas-liquid separation chamber 21, as shown in fig. 4, the thickness of the liquid ring in the discharge chamber 31 is increased compared to the thickness of the liquid ring in the gas-liquid separation chamber 21, that is, the liquid ring in the discharge chamber 31 has a larger centrifugal force, so that the discharge pressure can be increased, the discharge flow rate can be increased, and the discharge is smoother.

In particular embodiments of the present disclosure, the exhaust pipe 4 may be configured in any suitable manner. Alternatively, the exhaust pipe 4 may extend in the main central axis direction, the exhaust pipe 4 may have a gas inlet end 41 and a gas outlet end 42 opposite to each other, the exhaust pipe 4 penetrates the rear end cover 34 and extends into the degassing housing 22 such that the gas inlet end 41 is located in the gas-liquid separation chamber 21 to remove gas in the gas-liquid separation chamber 21, and the gas outlet end 42 does not communicate with the feed chamber 11 to prevent mixture just entering the feed chamber 11 from splashing into the exhaust pipe 4, as shown with reference to fig. 1, 3 and 4. Wherein, the exhaust end 42 of the exhaust pipe 4 can be communicated with the vacuum pump, so as to ensure a certain vacuum degree in the gas-liquid separation chamber 21, so that the efficiency of gas-liquid separation is improved, and the gas in the gas-liquid separation chamber 21 enters the exhaust pipe 4 from the gas inlet end 41 and reaches the exhaust end 42 along the axial direction to be pumped away by the vacuum pump, that is, the exhaust direction of the gas is opposite to the flowing direction of the liquid, which can also reduce the possibility that the liquid is sucked back into the exhaust pipe 4. In addition, in order to ensure the sealing performance between the exhaust pipe 4 and the sealing cover 23 and avoid gas leakage and liquid leakage, the exhaust pipe 4 and the sealing cover 23 may be hermetically connected by a sealing gasket, or the exhaust pipe 4 and the sealing cover 23 may be welded and fixed to ensure the vacuum degree in the gas-liquid separation chamber 21.

A third aspect of the present disclosure will be described in detail below with reference to the accompanying drawings.

Impeller of centrifugal degasser

According to a third aspect of the present disclosure, the impeller may comprise a base plate 51 rotating around a main central axis of the centrifugal degasser, and a blade 52 arranged on the base plate 51, the base plate 51 being provided with a plurality of through holes 511 extending axially therethrough, the blade 52 being adapted to be arranged in the gas-liquid separation chamber 21 and the discharge chamber 31 of the centrifugal degasser so as to form a liquid ring in the gas-liquid separation chamber 21 and to discharge the liquid in the discharge chamber 31 from the discharge nozzle 32 during rotation around the main central axis.

Through the technical scheme, the rotation of the chassis 51 of the impeller can drive the plurality of blades 52 to rotate, so that power is provided for the rotation of the mixed materials in the gas-liquid separation cavity 21, and the mixed materials in the gas-liquid separation cavity 21 can do high-speed centrifugal motion; the rotation of the blades 52 drives the mixed material in the gas-liquid separation cavity 21 to rotate at a high speed, liquid in the mixed material forms a liquid ring rotating at a high speed, the separation of gas is accelerated, and the gas-liquid separation efficiency is improved; in addition, during the centrifugal movement of the mixture in the gas-liquid separation chamber 21, the plurality of through holes 511 on the base plate 51 of the impeller can balance the pressure imbalance on the two sides of the base plate 51 caused by the high-speed rotation of the base plate 51.

In order to enable the impeller to rotate around the main central axis at a high speed, the chassis 51 may be fixed on the rotating shaft 7, the axis of the rotating shaft 7 may be collinear with the main central axis, and as shown in fig. 4, the rotating shaft 7 may be connected with the output end of the motor, so that the output end of the motor may drive the rotating shaft 7 to rotate, and the rotating shaft 7 may drive the chassis 51 to rotate around the main central axis.

In order to improve the gas-liquid separation efficiency, the number of the blades 52 may be multiple, the multiple blades 52 are arranged in an annular array around the main central axis, and referring to fig. 2 and 5, the rotation of the multiple blades 52 can shorten the time for the mixture just entering the gas-liquid separation chamber 21 to be fused into the liquid ring, so as to shorten the gas-liquid separation time and improve the gas-liquid separation efficiency.

In particular embodiments of the present disclosure, blades 52 may be configured in any suitable manner. Alternatively, the vane 52 may comprise an outer plate portion which may have opposite first and second ends along a main central axis, the first end being connected to the bottom plate 51 and formed with a discharge vane portion 521 adapted to be disposed in the discharge chamber 31, and the second end being formed with a separation vane portion 522 adapted to be disposed in the gas-liquid separation chamber 21, as shown with reference to fig. 2 and 5. Wherein the first end is formed as a discharge blade 521 and connected to the side of the base plate 51 facing the gas-liquid separation chamber 21, and the discharge blade 521 can stir and accelerate the liquid ring to rotate when rotating, thereby increasing the discharge pressure; the second end extends into the gas-liquid separation chamber 21 along the main central axis, and the second end is formed into a separation blade portion 522, and the separation blade portion 522 can drive the mixed material to rotate together when rotating in the gas-liquid separation chamber 21, so as to provide power for the centrifugal motion of the mixed material, and because the centrifugal acceleration of the gas and the liquid in the mixed material are different, the liquid in the mixed material forms a liquid ring rotating at a high speed along the circumference of the gas-liquid separation chamber 21, and the gas is separated out from the liquid and is gathered near the central axis in the gas-liquid separation chamber 21.

In particular embodiments of the present disclosure, the discharge blade portion 521 may be configured in any suitable manner. Optionally, the discharge blade portions 521 extend outward in a radial direction perpendicular to the main central axis, as shown in fig. 2 and 5, to increase the contact area between the discharge blade portions 521 and the liquid ring, so as to increase the force-bearing area of the liquid ring, so that the liquid in the discharge chamber 31 can reach the preset discharge speed and discharge pressure as soon as possible. Furthermore, the discharge vane portions 521 may extend coplanar with the main central axis, i.e. the discharge vane portions 521 are configured as plate-like structures extending outwards in the radial direction, which enables an improved discharge efficiency.

In particular embodiments of the present disclosure, the separating blade portions may be configured in any suitable manner. Optionally, the separation blade portions 522 extend outward in a radial direction perpendicular to the main central axis, as shown in fig. 2 and 5, to increase the contact area between the separation blade portions 522 and the mixed material, so as to increase the force-bearing area of the mixed material, so that the liquid in the mixed material can reach a preset rotation speed as soon as possible, thereby accelerating the gas separation. Further, the separation blade portions 522 may extend to be coplanar with the main central axis, that is, the separation blade portions 522 are configured in a plate-like structure extending outward in the radial direction to improve the gas-liquid separation effect.

In order to increase the discharge pressure, the size of the discharge blade portions 521 in the radial direction is larger than the size of the separating blade portions 522 in the radial direction, as shown with reference to fig. 4 and 5. The discharge blade portion 521 has a larger size in the radial direction than the separation blade portion 522, and can increase the contact area between the blade 52 and the liquid in the discharge chamber 31, thereby improving the stirring effect on the liquid, and accelerating the linear speed of the liquid ring rotation in the discharge chamber 31, so as to improve the discharge pressure and the discharge flow rate.

In order to prevent liquid from flowing back into the exhaust duct 4 under the suction force of the vacuum pump, the blade 52 includes an inner blade portion connected to the inside of the outer blade portion and extending in the radial direction to the main central axis to form a sealing blade portion 523, as shown with reference to fig. 4 and 5. The sealing blades 523 enable the liquid near the main central axis to be centrifuged and merged into the liquid ring, preventing the liquid from being sucked back into the exhaust pipe 4 near the main central axis.

In order to enable the sealing blades 523 to have a sealing effect on the exhaust pipe 4, the air inlet end 41 of the exhaust pipe 4 may extend to pass over the separating blades 522 and close to the sealing blades 523, and as shown in fig. 4, when the sealing blades 523 rotate, the liquid near the air inlet end 41 can be made to centrifugally move so as to be away from the air inlet end 41, and the liquid is prevented from being sucked back into the air inlet end 41.

In the embodiment shown in fig. 4, the sealing blade portion 523 is disposed near a position where the separating blade portion 522 is connected to the discharging blade portion 521, so that the air inlet end 41 of the exhaust duct 4 may extend to a space surrounded by the plurality of separating blade portions 522 at a front side of the sealing blade portion 523.

In order to enhance the agitation of the mixed materials by the blades 52 to enhance the degassing effect, in another embodiment of the present disclosure, the inner edge of the outer plate portion of the blades 52 is formed with a plurality of openings 524 such that the inner edge of the blades 52 is configured with a saw-tooth structure, as shown with reference to fig. 5. Referring to fig. 5, in a space defined by a plurality of separation blade portions 522 at the front side of the sealing blade portion 523, the zigzag structure formed at the inner edge of the corresponding outer blade portion breaks up bubbles located in the space as the blades 52 rotate, thereby improving the gas-liquid separation effect, shortening the gas-liquid separation time of the mixture, and improving the degassing efficiency.

In order to balance the air pressure on both sides of the chassis 51, the through hole 511 is provided near the center of the chassis 51, as shown with reference to fig. 2 and 5, so that the air near the main central axis can pass through the through hole 511, thereby balancing the air pressure on both sides of the chassis 51. Further, a plurality of through holes 511 are annularly arrayed around the main central axis to make the chassis 51 uniformly stressed.

On the basis of the above technical solution, the third aspect of the present disclosure also provides a centrifugal degasser, which includes the impeller of the centrifugal degasser of the third aspect of the present disclosure, and has the same technical effects as the impeller.

In this regard, the centrifugal degasser provided by the first aspect of the present disclosure may also be configured so as to achieve the same effect.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (13)

1. An impeller for a centrifugal degasser, characterised in that it comprises a base disc (51) rotating around a main central axis of the centrifugal degasser and blades (52) arranged on the base disc (51), the base disc (51) being provided with a plurality of through holes (511) running axially therethrough, the blades (52) being adapted to be arranged in a gas-liquid separation chamber (21) and a discharge chamber (31) of the centrifugal degasser so as to form a liquid ring for liquid in the gas-liquid separation chamber (21) during rotation around the main central axis and so as to discharge liquid in the discharge chamber (31) from a discharge nozzle (32).

2. The impeller of a centrifugal degasser according to claim 1, wherein said number of blades (52) is multiple, said multiple blades (52) being arranged in an annular array around said main central axis.

3. The impeller of a centrifugal degasser according to claim 1 or 2, wherein said blades (52) comprise an outer blade portion having opposite first and second ends along said main central axis, said first end being connected to said bottom disc (51) and being formed with discharge blade portions (521) adapted to be arranged in said discharge chamber (31), said second end being formed with separating blade portions (522) adapted to be arranged in said gas-liquid separation chamber (21).

4. The impeller of a centrifugal degasser according to claim 3, wherein said discharge vane portions (521) extend outwards in a radial direction perpendicular to said main central axis.

5. The impeller of a centrifugal degasser according to claim 4, wherein said discharge vane portions (521) extend coplanar with said main central axis.

6. The impeller of a centrifugal degasser according to claim 4, wherein said separating blade portions (522) extend outwardly in a radial direction perpendicular to said main central axis.

7. The impeller of a centrifugal degasser according to claim 6, wherein said separating blade portions (522) extend coplanar to said main central axis.

8. The impeller of the centrifugal degasser of claim 6, wherein the size of the discharge blade sections (521) in the radial direction is larger than the size of the separating blade sections (522) in the radial direction.

9. The impeller of a centrifugal degasser according to claim 3, wherein said blades (52) comprise an inner blade portion connected inside said outer blade portion and extending in a radial direction perpendicular to said main central axis to form sealing blade portions (523).

10. The impeller of a centrifugal degasser according to claim 3, wherein the inner edge of said outer sheet portion is formed with a plurality of openings (524) such that the inner edge of said blades (52) is configured with a saw tooth structure.

11. The impeller of a centrifugal degasser according to claim 1, wherein said through holes (511) are provided close to the centre of the bottom disc (51).

12. The impeller of a centrifugal degasser according to claim 11, wherein a plurality of said through holes (511) are annularly arrayed around said main central axis.

13. A centrifugal degasser comprising an impeller according to any of claims 1 to 12.

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