Centrifugal water-gas separation device and negative pressure machine

Abstract

The utility model relates to the technical field of water-gas separation, in particular to a centrifugal water-gas separation device and a negative pressure machine, the centrifugal water-gas separation device is characterized in that a separation cavity is formed in a shell, the shell is provided with a water-gas inlet, a gas outlet and a liquid outlet which are communicated with the separation cavity, and the gas outlet is communicated with a negative pressure source; the centrifugal assembly is installed in the separation cavity and comprises a guide part, a blocking part and a flow guide part, a plurality of protruding rib parts are formed on the side, facing the guide part, of the flow guide part, a flow guide groove is formed between every two adjacent rib parts, the flow guide grooves communicate with the water vapor inlet and the liquid outlet, and the blocking part is arranged between the guide part and the flow guide part. The guiding piece communicates with the diversion trench and the gas outlet. According to the centrifugal water-gas separation device, the problem that the service life of a motor generating a negative pressure source is affected due to the fact that water gas does not flow into the flow guide groove, directly enters the guide piece and is exhausted from the gas outlet can be solved, and therefore the safety performance of the centrifugal water-gas separation device is improved, and the service life of the centrifugal water-gas separation device is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to water gas separation technical field especially is involved in centrifugal water gas separation device and negative pressure machine. BACKGROUND

[0002] The negative pressure machine is used for adsorbing saliva or water when the dental handpiece is polished in the dental field, liquid is adsorbed, in order to avoid that the motor of generating negative pressure is corroded by water, so water gas separation needs to be carried out. Common water gas separation devices have two kinds, one is to realize water gas separation by gravity, this mode needs a larger tank body, so the volume of the whole negative pressure machine is larger, the other is to realize water gas separation by centrifugal separation, and the water gas separation is not complete in centrifugal separation, part of liquid and gas enter the exhaust passage together, resulting in motor corrosion. SUMMARY

[0003] Therefore, the centrifugal water gas separation device and the negative pressure machine are provided to solve the problem that the existing centrifugal water gas separation device is prone to incomplete separation of gas and liquid, resulting in liquid entering the exhaust passage and causing motor corrosion.

[0004] The first aspect of the utility model provides a centrifugal water gas separation device, which comprises:

[0005] A housing is formed with a separation cavity inside, a water gas inlet, a gas outlet and a liquid outlet communicating with the separation cavity are formed on the housing, and the gas outlet is communicated with a negative pressure source;

[0006] A centrifugal assembly is installed in the separation cavity, the centrifugal assembly comprises a guide piece, a barrier piece and a flow guide piece, a plurality of protruding rib portions are formed on one side of the flow guide piece facing the guide piece, a flow guide groove is formed between adjacent two rib portions, the flow guide groove is communicated with the water gas inlet and the liquid outlet, the guide piece is communicated with the flow guide groove and the gas outlet, and the barrier piece is arranged between the guide piece and the flow guide piece;

[0007] The water and gas entering the separation cavity from the water gas inlet flow into the flow guide groove, the centrifugal assembly rotates to generate centrifugal force, so that the liquid in the water and gas is thrown outward along the flow guide groove to flow out from the liquid outlet, and the gas in the water and gas flows inward along the flow guide groove and enters the guide piece to flow out from the gas outlet.

[0008] Preferably, the guide piece is formed as a cylindrical structure and is arranged above the flow guide piece.

[0009] The flow guide piece is formed as a plate structure, the rib portions are arranged on the top of the flow guide piece and are distributed on the outer edge of the flow guide piece.

[0010] Preferably, the rib part is formed as a curved plate structure.

[0011] Preferably, the outer wall of the barrier part is formed with a protruding flow guide part, the flow guide part is formed as an annular structure with the outer wall being beveled, a small-diameter end of the flow guide part is connected with the outer wall of the guide part, and a large-diameter end of the flow guide part is connected with the top of the rib part.

[0012] Preferably, the circumferential side wall of the flow guide part is provided with a plurality of grooves, so that the circumferential side wall of the flow guide part is formed with a plurality of protruding tooth parts.

[0013] Preferably, the grooves are in communication with the flow guide grooves.

[0014] Preferably, the shell comprises an upper cover, a shell body and a lower cover which are sequentially buckled from top to bottom; part of the upper cover extends into the interior of the guide part and surrounds a through hole into which a driving end of a driving device of the centrifugal assembly extends, the shell body surrounds the separation cavity, and the water vapor inlet, the gas outlet and the liquid outlet are all arranged on the outer wall of the shell body.

[0015] Preferably, the shell is further provided with a drain port in communication with the separation cavity, the drain port is arranged at the bottom of the shell and below the liquid outlet.

[0016] Preferably, the shell further comprises:

[0017] A flow guide part is arranged in the separation cavity and below the flow guide part, one side of the flow guide part facing the flow guide part is formed as a funnel-shaped flow guide part, and a small-diameter end of the flow guide part is in communication with the drain port.

[0018] The second aspect of the utility model provides a negative pressure machine, comprising the centrifugal water vapor separation device of any one of the above technical schemes.

[0019] Compared with the prior art, the utility model has the beneficial effects that:

[0020] The centrifugal water-gas separation device of the utility model, the inside of the shell forms a separation cavity, the centrifugal assembly is installed in the separation cavity, the shell is provided with a water-gas inlet, a gas outlet and a liquid outlet which are communicated with the separation cavity, the gas outlet is communicated with a negative pressure source, the centrifugal assembly comprises a guide piece, a barrier piece and a flow guide piece, a plurality of protruding rib parts are formed on the side of the flow guide piece facing the guide piece, a flow guide groove is formed between the adjacent two rib parts, the flow guide groove is communicated with the water-gas inlet and the liquid outlet, and the guide piece is communicated with the flow guide groove and the gas outlet; the water-gas entering the separation cavity from the water-gas inlet flows into the flow guide groove, the centrifugal assembly rotates to generate centrifugal force, so that the liquid in the water-gas flows outward along the flow guide groove to flow out from the liquid outlet, under the action of negative pressure, the gas in the water-gas flows inward along the flow guide groove and enters the guide piece to flow out from the gas outlet, so that water-gas separation is realized. The barrier piece is arranged between the guide piece and the flow guide piece, so that the problem that the water-gas does not flow into the flow guide groove but directly enters the guide piece and is discharged from the gas outlet to affect the service life of the motor of the negative pressure source is avoided, and the safety performance and service life of the centrifugal water-gas separation device and the negative pressure machine are improved.

[0021] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are specifically described below, and the accompanying drawings are described in detail as follows. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0023] Figure 1 The structure schematic diagram of the centrifugal water-gas separation device provided for the embodiments of the utility model is shown in the figure.

[0024] Figure 2 The explosion structure schematic diagram of the centrifugal water-gas separation device provided for the embodiments of the utility model is shown in the figure.

[0025] Figure 3 The sectional structure schematic diagram of the centrifugal water-gas separation device provided for the embodiments of the utility model is shown in the figure.

[0026] Figure 4 The Figure 3 The enlarged structure schematic diagram of A in the figure.

[0027] Figure 5 The structure schematic diagram of the barrier piece in the centrifugal water-gas separation device provided for the embodiments of the utility model is shown in the figure.

[0028] Figure 6The structure diagram of the barrier piece provided with the groove in the centrifugal water-gas separation device is shown.

[0029] Icon: 10 - shell; 11 - upper cover; 111 - through hole; 12 - shell; 121 - separation cavity; 13 - lower cover; 101 - water gas inlet; 102 - gas outlet; 103 - liquid outlet; 104 - drain; 20 - guide piece; 21 - first mounting part; 30 - barrier piece; 31 - flow guide part; 311 - groove; 312 - tooth part; 40 - flow guide piece; 41 - rib part; 42 - flow guide groove; 43 - second mounting part; 50 - drainage piece; 51 - drainage part. DETAILED DESCRIPTION

[0030] The following detailed description is presented to aid in understanding the method, apparatus and / or system described herein. It is not intended to limit the method, apparatus and / or system described herein to the precise construction described. Rather, various changes, modifications, and equivalents can be resorted to as will be apparent to those skilled in the art. For example, the order of the operations described herein can be changed, except that the operations must occur in the order in which they are described unless otherwise stated. In addition, features described herein can be omitted, as known in the art.

[0031] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, these examples have been provided so that this disclosure will be thorough and complete, and will fully convey the scope of the methods, apparatus and / or systems described herein to those skilled in the art.

[0032] Throughout the specification, when an element (such as a layer, region or substrate) is referred to as being "on" another element, "connected to" another element, "coupled to" another element, "adjacent to" another element, or "covering" another element, it can be directly on, connected to, coupled to, adjacent to, or covering the other element, or one or more other elements can be interposed therebetween. In contrast, when an element is referred to as being "directly on", "directly connected to", "directly coupled to", "directly adjacent to", or "directly covering" another element, there are no other elements interposed therebetween.

[0033] As used herein, the term "and / or" includes any one of the listed items and any combination of any two or more of the listed items.

[0034] Although terms such as "first" and "second" and "third" can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, terms of a first element, component, region, layer or section described herein could also be termed a second element, component, region, layer or section without departing from the teachings of the examples.

[0035] For ease of description, spatial relationship terms such as "on", "upper", "under", and "lower" can be used herein to describe the relationship between one element and another element as shown in the drawings. Such spatial relationship terms are intended to encompass different orientations of the device in use or operation, in addition to the orientation depicted in the drawings. For example, if the device in the drawings is turned over, an element described as on "upper" or "upper" relative to another element would then be oriented on "lower" or "lower" relative to another element. Therefore, the term "on" encompasses both the "on" and "under" orientations depending on the spatial orientation of the device. The device can also be positioned in other ways (for example, rotated 90 degrees or in other orientations), and the spatial relationship terms used herein will be interpreted accordingly.

[0036] The terms used herein are only used to describe various examples and not to limit the present disclosure. The singular form is intended to include the plural form unless the context clearly indicates otherwise. The terms "include", "contain" and "have" enumerate the presence of the stated features, numbers, operations, components, elements and / or combinations thereof, but do not exclude the presence or addition of one or more other features, numbers, operations, components, elements and / or combinations thereof.

[0037] Due to manufacturing techniques and / or tolerances, variations in the shapes of the illustrated structures can occur. Therefore, the examples described herein are not limited to the specific shapes illustrated in the drawings, but include variations in the shapes that occur during manufacturing.

[0038] The features of the examples described herein can be combined in various ways as will be apparent after the disclosure of the present application is understood. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after the disclosure of the present application is understood.

[0039] According to the first aspect of the present application, a centrifugal water-gas separation device is provided, which comprises a housing 10 and a centrifugal assembly.

[0040] Hereinafter, the specific structure of the above-mentioned components of the centrifugal water-gas separation device according to the present embodiment will be described.

[0041] In the present embodiment, as shown in Figures 1 to 3 the interior of the housing 10 is formed with a separation cavity 121, the centrifugal assembly is installed in the separation cavity 121, the housing 10 is provided with a water-gas inlet 101, a gas outlet 102 and a liquid outlet 103 which communicate with the separation cavity 121, the gas outlet 102 and the water-gas inlet 101 are both arranged above the liquid outlet 103, wherein the gas outlet 102 is preferably arranged above the water-gas inlet 101, the gas outlet 102 communicates with a negative pressure source, the negative pressure source can be formed by suction of a negative pressure device such as a negative pressure machine, and the motor in the negative pressure device can form the power to generate the negative pressure source.

[0042] Specifically, as shown in Figures 1 to 4 the centrifugal assembly includes a guide member 20, a barrier member 30 and a flow guide member 40, the flow guide member 40 is formed with a plurality of protruding rib portions 41 on the side facing the guide member 20, a flow guide groove 42 is formed between adjacent two rib portions 41, the flow guide groove 42 communicates with the water-gas inlet 101 and the liquid outlet 103, and the guide member 20 communicates with the flow guide groove 42 and the gas outlet 102; the water-gas entering the separation cavity 121 from the water-gas inlet 101 at least partially flows into the flow guide groove 42 along the outer wall of the guide member 20 under the action of negative pressure, the centrifugal assembly rotates to generate centrifugal force, so that the liquid in the water-gas is thrown outward along the flow guide groove 42 to flow out from the liquid outlet 103, and the gas in the water-gas flows to the inside rotating center along the flow guide groove 42 under the action of negative pressure and enters the guide member 20 to flow out from the gas outlet 102, thus realizing the separation of the liquid and the gas in the water-gas. The barrier member 30 is arranged between the guide member 20 and the flow guide member 40, which can avoid the problem that the water-gas does not flow into the flow guide groove 42 but directly enters the guide member 20 from the gap between the guide member 20 and the flow guide member 40 and is discharged from the gas outlet 102, thereby affecting the service life of the motor generating the negative pressure source, thereby improving the safety performance and service life of the centrifugal water-gas separation device.

[0043] Preferably, the liquid outlet 103 is arranged at the side of the rib portion 41 to improve the effectiveness of the liquid after separation into the liquid outlet 103.

[0044] It should be noted that by controlling the size of the negative pressure value, it can be ensured that the liquid is not sucked into the gas outlet 102 while the gas is being sucked.

[0045] In optional embodiments, the barrier 30 is formed as a sealing ring with elasticity, and the barrier 30 is clamped between the guide 20 and the flow guide 40 and deformed to a certain extent, so as to improve the sealing effect of the barrier 30 on the gap between the guide 20 and the flow guide 40. In other optional embodiments, the barrier 30 can also be a rigid member, as long as it can avoid water vapor from directly entering the gas outlet 102 without being separated.

[0046] Further, in the present embodiment, as shown in Figure 2 and Figure 3 , the guide 20 is formed as a cylindrical structure, the axis of the cylindrical structure is collinear with the rotation axis of the centrifugal assembly, and the negative pressure path in the separation cavity 121 is from the outside of the guide 20 to the flow guide groove 42, then to the inside of the guide 20, and finally to the gas outlet 102. Since the flow directions of the liquid and the gas in the flow guide groove 42 are opposite, water vapor separation is achieved, and the guide 20 is arranged above the flow guide 40, so that the liquid can be prevented from entering the gas outlet 102.

[0047] Further, in the present embodiment, as shown in Figures 2 to 4 , the flow guide 40 is formed as a plate-shaped structure, and the flow guide 40 is arranged horizontally or approximately horizontally, and the rib portions 41 are arranged upright on the top of the flow guide 40, and the rib portions 41 are distributed on the outer edge of the flow guide 40. The middle position of the top of the flow guide 40 is formed with a protruding second mounting portion 43, and the inside of the guide 20 is provided with a first mounting portion 21, the first mounting portion 21 is connected with the inner wall of the guide 20, and the first mounting portion 21 and the second mounting portion 43 are both formed as a cylindrical structure and coaxially arranged, and the driving end of the driving device for driving the centrifugal assembly to rotate is sequentially inserted into the first mounting portion 21 and the second mounting portion 43, so as to realize fixed connection, and ensure that the centrifugal assembly can rotate synchronously with the driving device. The driving device can be a motor or the like, as long as it can drive the centrifugal assembly to rotate.

[0048] In preferred embodiments, as shown in Figures 2 to 4 , the rib portions 41 are formed as curved plate-shaped structures, so that the plurality of rib portions 41 are similar to the turbine blade structure of the centrifugal pump, so that the liquid can be better accelerated and pressurized under the action of the curved rib portions 41, and the efficiency of water vapor separation is improved.

[0049] In preferred embodiments, as shown in Figures 2 to 5As shown, the outer wall of the barrier 30 is formed with a protruding flow guide part 31, which is formed as an annular protrusion structure, specifically, the flow guide part 31 is formed as an annular structure with the outer wall being beveled, the small-diameter end of the flow guide part 31 is connected with the outer wall of the guide part 20, and the large-diameter end of the flow guide part 31 is connected with the top of the rib part 41, so that the water vapor flowing down the outer wall of the guide part 20 can flow outward along the bevel of the flow guide part 31, and part of the water vapor directly enters the flow guide groove 42, and under the rotation of the separation assembly, the liquid in the water vapor can also be thrown against the cavity wall of the separation cavity 121 and then fall into the flow guide groove 42 or flow into the liquid outlet 103 along the cavity wall or into the drain 104 as described below.

[0050] In another preferred embodiment, as Figure 6 shown, the circumferential side wall of the flow guide part 31 is provided with a plurality of grooves 311, so that the circumferential side wall of the flow guide part 31 is formed with a plurality of protruding tooth parts 312, thus forming a structure similar to an impeller (which can be understood as similar to the action of the rib part 41), which accelerates the rotation of the water vapor and helps the separation of the water vapor.

[0051] Further, the grooves 311 are arranged one-to-one with the flow guide grooves 42, and different grooves 311 are in communication with different flow guide grooves 42, so that at least part of the water vapor can enter the flow guide grooves 42 through the grooves 311.

[0052] In the present embodiment, as Figures 1 to 3 shown, the housing 10 includes an upper cover 11, a shell 12 and a lower cover 13 which are sequentially buckled from top to bottom; the shell 12 surrounds the separation cavity 121, the upper cover 11 is arranged at the top of the shell 12, and the lower cover 13 is arranged at the bottom of the shell 12, and the upper cover 11 and the lower cover 13 can be connected with the shell 12 by clamping, so as to facilitate disassembly. Part of the upper cover 11 extends into the interior of the guide part 20 and surrounds a through hole 111 for the driving end of the driving device of the centrifugal assembly to extend into, so that the driving end of the driving device extends into the first mounting part 21 and the second mounting part 43 as described above through the through hole, thereby realizing fixed connection with the centrifugal assembly, and the water vapor inlet 101, the gas outlet 102 and the liquid outlet 103 are arranged on the outer wall of the shell 12.

[0053] In a preferred embodiment, as Figures 1 to 4As shown, the shell 10 is further provided with a drainage port 104 communicating with the separation chamber 121, the drainage port 104 is arranged at the bottom of the shell 10 and below the liquid outlet 103, under the action of centrifugal force, a small part of the separated liquid does not enter the liquid outlet 103 but falls to the bottom of the separation chamber 121, for example, the liquid is thrown to the wall of the separation chamber 121 and then slides downward and cannot enter the liquid outlet 103, the drainage port 104 can ensure that the liquid is discharged, thereby ensuring the reliability of the water-gas separation device.

[0054] Further, as shown in Figure 2 and Figure 3 The centrifugal water-gas separation device further comprises a flow guide member 50 arranged in the separation chamber 121 and below the flow guide member 40, one side of the flow guide member 50 facing the flow guide member 40 is formed into a funnel-shaped flow guide part 51, the large-diameter end of the flow guide part 51 faces the flow guide member 40, and the small-diameter end of the flow guide part 51 communicates with the drainage port 104, so that the liquid falling to the bottom of the separation chamber 121 without entering the liquid outlet 103 is guided to the drainage port 104, avoiding liquid residue in the separation chamber 121 and accelerating the drainage of the drainage port 104.

[0055] According to the centrifugal water-gas separation device, the inside of the shell is formed with a separation chamber, the centrifugal assembly is installed in the separation chamber, the shell is provided with a water-gas inlet, a gas outlet and a liquid outlet communicating with the separation chamber, the gas outlet communicates with a negative pressure source, the centrifugal assembly comprises a guide member, a blocking member and a flow guide member, one side of the flow guide member facing the guide member is formed with a plurality of protruding rib parts, a flow guide groove is formed between adjacent two rib parts, the flow guide groove communicates with the water-gas inlet and the liquid outlet, and the guide member communicates with the flow guide groove and the gas outlet; the water-gas entering the separation chamber from the water-gas inlet flows into the flow guide groove, the centrifugal assembly rotates to generate centrifugal force, so that the liquid in the water-gas flows outward along the flow guide groove to flow out from the liquid outlet, under the action of negative pressure, the gas in the water-gas flows inward along the flow guide groove and enters the guide member to flow out from the gas outlet, so that water-gas separation is realized. The blocking member is arranged between the guide member and the flow guide member, so that the problem that the water-gas does not flow into the flow guide groove but directly enters the guide member and is discharged from the gas outlet to affect the service life of the motor of the negative pressure source is avoided, thereby improving the safety performance and service life of the centrifugal water-gas separation device.

[0056] According to the centrifugal water-gas separation device, the inside of the shell is formed with a separation chamber, the centrifugal assembly is installed in the separation chamber, the shell is provided with a water-gas inlet, a gas outlet and a liquid outlet communicating with the separation chamber, the gas outlet communicates with a negative pressure source, the centrifugal assembly comprises a guide member, a blocking member and a flow guide member, one side of the flow guide member facing the guide member is formed with a plurality of protruding rib parts, a flow guide groove is formed between adjacent two rib parts, the flow guide groove communicates with the water-gas inlet and the liquid outlet, and the guide member communicates with the flow guide groove and the gas outlet; the water-gas entering the separation chamber from the water-gas inlet flows into the flow guide groove, the centrifugal assembly rotates to generate centrifugal force, so that the liquid in the water-gas flows outward along the flow guide groove to flow out from the liquid outlet, under the action of negative pressure, the gas in the water-gas flows inward along the flow guide groove and enters the guide member to flow out from the gas outlet, so that water-gas separation is realized. The blocking member is arranged between the guide member and the flow guide member, so that the problem that the water-gas does not flow into the flow guide groove but directly enters the guide member and is discharged from the gas outlet to affect the service life of the motor of the negative pressure source is avoided, thereby improving the safety performance and service life of the centrifugal water-gas separation device.

[0057] Finally, it should be noted that the above-described embodiments are merely specific embodiments of the present application, which are used to illustrate the technical solutions of the present application, but not to limit the same. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that any skilled person in the art can still modify or easily think of changes to the technical solutions recorded in the foregoing embodiments, or make equivalent replacements to some of the technical features, within the technical scope disclosed by the present application. The modifications, changes or replacements do not make the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A centrifugal water-gas separator, characterized in that, include: The outer shell has a separation chamber inside, and the outer shell has a water vapor inlet, a gas outlet and a liquid outlet that communicate with the separation chamber. The gas outlet is connected to a negative pressure source. A centrifugal assembly is installed in the separation chamber. The centrifugal assembly includes a guide, a barrier, and a flow guide. The flow guide has multiple protruding ribs on the side facing the guide. A flow guide groove is formed between two adjacent ribs. The flow guide groove connects the water-gas inlet and the liquid outlet. The guide connects the flow guide groove and the gas outlet. The barrier is disposed between the guide and the flow guide. Water vapor entering the separation chamber through the water vapor inlet flows into the guide channel. The centrifugal assembly rotates to generate centrifugal force, causing the liquid in the water vapor to be thrown outward along the guide channel and flow out from the liquid outlet. The gas in the water vapor flows inward along the guide channel and enters the guide member to flow out from the gas outlet.

2. The centrifugal water-gas separator according to claim 1, characterized in that, The guide member is formed into a cylindrical structure and is disposed above the flow guide member; The flow guide is formed into a plate-like structure, and the ribs are disposed on the top of the flow guide and distributed on the outer edge of the flow guide.

3. The centrifugal water-gas separator according to claim 1, characterized in that, The rib section is formed into a curved plate-like structure.

4. The centrifugal water-gas separator according to claim 1, characterized in that, The outer wall of the barrier has a protruding guide portion, which is a ring structure with an inclined outer wall. The small diameter end of the guide portion is connected to the outer wall of the guide member, and the large diameter end of the guide portion is connected to the top of the rib portion.

5. The centrifugal water-gas separator according to claim 4, characterized in that, The circumferential sidewall of the flow guide is provided with multiple grooves, which makes the circumferential sidewall of the flow guide have multiple protruding teeth.

6. The centrifugal water-gas separator according to claim 5, characterized in that, The groove is connected to the flow guide channel.

7. The centrifugal water-gas separator according to claim 1, characterized in that, The outer casing includes an upper cover, a housing, and a lower cover that are sequentially fastened together from top to bottom; part of the upper cover extends into the interior of the guide and forms a through hole for the drive end of the drive device of the centrifugal assembly to extend into; the housing forms the separation chamber; and the water-gas inlet, the gas outlet, and the liquid outlet are all located on the outer wall of the housing.

8. The centrifugal water-gas separator according to claim 1, characterized in that, The outer casing is also provided with a drain outlet that communicates with the separation chamber. The drain outlet is located at the bottom of the outer casing and below the liquid outlet.

9. The centrifugal water-gas separator according to claim 8, characterized in that, Also includes: A drainage component is disposed within the separation cavity and located below the flow guide. The side of the drainage component facing the flow guide is formed into a funnel-shaped drainage portion, and the small-diameter end of the drainage portion is connected to the drain outlet.

10. A negative pressure machine, characterized in that, The centrifugal water-gas separator includes any one of claims 1 to 9.

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