A gas protection mechanism for a horizontal screw centrifuge

Abstract

The present invention relates to the technical field of horizontal spiral centrifuges, and discloses a gas protection mechanism for a horizontal spiral centrifuge, which includes a horizontal spiral centrifuge main body. An outer load housing is provided on the horizontal spiral centrifuge main body, and a gas supply mechanism is provided on the outer load housing. The gas supply mechanism includes a mounting plate provided on the outer load housing, and a gas inlet is opened on the mounting plate; a support plate is provided on the mounting plate, and an annular pipe for connecting a protective gas is provided on the support plate. A gas supply pipe is provided on the annular pipe. One end of the gas inlet is communicated with the gas supply pipe, and the other end of the gas inlet is communicated with the inner cavity of the outer load housing; a diffusion mechanism is also provided on the outer load housing; for the gas protection mechanism of this horizontal spiral centrifuge, first, the axial flow fan drives the protective gas to accelerate into the inner cavity of the centrifuge, and then the centrifugal fan throws the protective gas out, so that the gas replacement speed in the centrifuge is increased and the diffusion is uniform.

Description

Technical Field

[0001] The present invention relates to the technical field of horizontal scroll centrifuges, and particularly to a gas protection mechanism for a horizontal scroll centrifuge. Background Art

[0002] The horizontal screw sedimentation centrifuge is simply referred to as a horizontal scroll centrifuge. It is an efficient centrifugal separation device and a horizontal screw discharge and continuously operating sedimentation device. Its working principle is that the drum and the screw rotate at a certain differential speed in the same direction at high speed. The material is continuously introduced into the inner cylinder of the conveying screw through the feed pipe, accelerated and then enters the drum, and the material is separated under the action of the centrifugal force field. When the horizontal scroll centrifuge is operating, a gas protection mechanism is required to inject a protective gas such as nitrogen into the inner cavity of the centrifuge to ensure that the oxygen content concentration in the inner cavity of the centrifuge is maintained within the explosion-proof safety range.

[0003] In the prior art, as disclosed in a Chinese invention patent (CN202011537273.1), a gas protection system and a gas protection method for a centrifuge are provided, including a protective gas supply unit for supplying a protective gas into the centrifuge and an oxygen content detection unit for collecting a sample gas from the centrifuge to detect the oxygen content of the sample gas. Among them, the protective gas supply unit includes a gas supply ring communicated with the gas supply source of the protective gas and fixedly arranged in the centrifuge, a connection ring fixedly arranged on the filter basket of the centrifuge, and a gas distribution pipeline arranged on the filter basket and communicated with the connection cavity of the connection ring. An air outlet is opened on the gas distribution pipeline to discharge the protective gas into the inner cavity of the centrifuge. The gas supply ring and the connection ring are coaxially arranged with the filter basket and are arranged opposite to each other. A plurality of jet orifices facing the connection ring are opened on the gas supply ring, and an air inlet is opened on the connection ring. The protective gas ejected from the jet orifices enters the connection cavity through the air inlet and can enter the gas distribution pipeline due to the centrifugal action formed by the rotation of the filter basket, and then is discharged from the air outlet. The above prior art adopts a method of directly jetting gas into the inner cavity of the centrifuge, but this gas supply method cannot make nitrogen uniformly and quickly fill the inner cavity of the centrifuge, the working efficiency is low, and the gas replacement effect is not good enough.

[0004] In view of the above technical problems existing in the prior art, the present invention proposes a gas protection mechanism for a horizontal scroll centrifuge. Summary of the Invention

[0005] The present invention provides a gas protection mechanism for a horizontal spiral centrifuge, which has the beneficial effects of first driving the protective gas to accelerate into the inner cavity of the centrifuge through an axial flow wind wheel, and then throwing the protective gas out through a centrifugal wind wheel, so as to improve the gas replacement speed in the centrifuge and make the diffusion uniform, and solves the problem mentioned in the above background technology that the existing gas protection mechanism of the horizontal spiral centrifuge adopts the method of directly jetting gas into the inner cavity of the centrifuge, but this gas supply method cannot make nitrogen fill the inner cavity of the centrifuge evenly and quickly, the working efficiency is low, and the gas replacement effect is not good enough.

[0006] The present invention provides the following technical solutions: A gas protection mechanism for a horizontal spiral centrifuge, including a horizontal spiral centrifuge main body, an outer load housing is arranged on the horizontal spiral centrifuge main body, a gas supply mechanism is arranged on the outer load housing, the gas supply mechanism includes a mounting plate arranged on the outer load housing, and a gas inlet is opened on the mounting plate;

[0007] A support plate is arranged on the mounting plate, a ring-shaped pipeline for accessing the protective gas is arranged on the support plate, an air supply pipeline is arranged on the ring-shaped pipeline, one end of the gas inlet is communicated with the air supply pipeline, and the other end of the gas inlet is communicated with the inner cavity of the outer load housing;

[0008] A diffusion mechanism is further arranged on the outer load housing, the diffusion mechanism includes a guide wind cover arranged on the outer load housing, a centrifugal wind wheel is rotatably arranged on the guide wind cover, and the diffusion mechanism evenly diffuses the protective gas in the outer load housing into the horizontal spiral centrifuge main body through the rotation of the centrifugal wind wheel.

[0009] As an optional scheme of the present invention, wherein: The gas supply mechanism further includes a rotating ring rotatably arranged on the ring-shaped pipeline, a rotating shaft is arranged on the rotating ring, and the centrifugal wind wheel is arranged on the rotating shaft.

[0010] As an optional scheme of the present invention, wherein: The gas supply mechanism further includes a guide block arranged on the rotating ring, and a one-way valve is arranged in the ring-shaped pipeline.

[0011] As an optional scheme of the gas protection mechanism of the horizontal spiral centrifuge of the present invention, wherein: The gas supply mechanism further includes a sealing ring, one end of the sealing ring is connected to the outer load housing, and the other end of the sealing ring is connected to the mounting plate, and the sealing space formed by the sealing ring is used for the protective gas to enter the horizontal spiral centrifuge main body.

[0012] As an optional scheme of the present invention, wherein: The diffusion mechanism further includes a plurality of rotating rods arranged on the guide wind cover, a guide wind blade and a torsion spring are arranged on each of the plurality of rotating rods, and each of the plurality of torsion springs is connected to the guide wind cover.

[0013] As an alternative solution of the present invention, wherein: the diffusion mechanism further includes a plurality of sliding rods respectively arranged on a plurality of the guide wind blades, a plurality of sliding grooves are formed on the guide wind cover, and the plurality of sliding rods are respectively slidably arranged in the plurality of sliding grooves.

[0014] As an alternative solution of the present invention, wherein: an auxiliary air supply mechanism is further arranged in the outer load housing for auxiliary air supply, and the auxiliary air supply mechanism includes an axial flow wind wheel arranged in the outer load housing;

[0015] The axial flow wind wheel is connected to the rotating shaft, and the gas in the outer load housing is blown into the main body of the horizontal screw centrifuge by the rotation of the axial flow wind wheel for assistance.

[0016] As an alternative solution of the present invention, wherein: the auxiliary air supply mechanism further includes a rectangular connecting portion arranged on the rotating shaft, and the axial flow wind wheel is slidably arranged on the rectangular connecting portion.

[0017] As an alternative solution of the present invention, wherein: the auxiliary air supply mechanism further includes two cylinders symmetrically arranged in the outer load housing, a connecting ring is arranged on the piston rods of the two cylinders, and the axial flow wind wheel is rotatably arranged on the connecting ring.

[0018] As an alternative solution of the present invention, wherein: a driving mechanism is further arranged on the outer load housing for controlling the operation of the two cylinders, and the driving mechanism includes a solenoid valve arranged on the outer load housing, and the solenoid valve is connected to the air supply pipeline;

[0019] A first connecting pipeline and a second connecting pipeline are arranged on the solenoid valve, the first connecting pipeline is connected to both of the two cylinders, and the second connecting pipeline is connected to both of the two cylinders.

[0020] The present invention has the following beneficial effects:

[0021] 1. The gas protection mechanism of this horizontal screw centrifuge is different from the way of directly injecting protective gases such as nitrogen into the inner cavity of the main body of the horizontal screw centrifuge in the prior art. In this device, the protective gas first enters the annular pipeline, then enters the gas inlet on the mounting plate through the air supply pipeline, and then enters the inner cavity of the outer load housing through the sealing space formed by the sealing ring.

[0022] A guide wind cover and a centrifugal wind wheel are installed in the inner cavity of the outer load housing. Through the operation of the centrifugal wind wheel, the protective gas in the outer load housing is flung around and evenly diffused into the main body of the horizontal screw centrifuge through the air outlet of the guide wind cover, which not only speeds up the air intake speed, but also enables the protective gas to be more evenly diffused in the main body of the horizontal screw centrifuge.

[0023] 2. For the gas protection mechanism of this horizontal scroll centrifuge, the operation of the centrifugal wind wheel does not require additional power. When the protective gas enters the annular pipeline, due to the limiting effect of the one-way valve, an annular air flow will be formed in the annular pipeline, which pushes the guide block and the rotating ring to rotate, and the rotating ring drives the rotating shaft to rotate. The centrifugal wind wheel is installed on the rotating shaft. This saves the cost during the operation of the device, maximizes the utilization of resources, and is environmentally friendly and reliable.

[0024] 3. For the gas protection mechanism of this horizontal scroll centrifuge, an auxiliary air supply mechanism is also provided inside the outer load shell to further increase the speed at which the protective gas enters the main body of the horizontal scroll centrifuge. Through the operation of the axial flow wind wheel, the gas inside the outer load shell is blown towards the air inlet of the guide wind cover. At this time, the air pressure at the air inlet is relatively small. According to Bernoulli's principle, the gas inside the outer load shell will be accelerated and sent into the guide wind cover, just like the principle of a suction fan. And the axial flow wind wheel is also driven by the rotating shaft and does not require additional power.

[0025] 4. For the gas protection mechanism of this horizontal scroll centrifuge, the degree to which the axial flow wind wheel drives the gas to accelerate into the guide wind cover is determined by its distance from the air inlet of the guide wind cover. In this device, the acceleration degree can be adjusted. An oxygen detection mechanism can be set inside the main body of the horizontal scroll centrifuge. According to the detection data, control the operation of the solenoid valve, and then use the connected nitrogen gas as power to drive the two cylinders to expand and contract, thereby driving the axial flow wind wheel to adjust the distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the gas protection mechanism in actual use in the present invention.

[0027] Figure 2 It is a schematic overall explosion structure diagram of the present invention.

[0028] Figure 3 For Figure 2 The partial enlarged view at A in

[0029] Figure 4 It is a schematic first sectional structure diagram of the present invention.

[0030] Figure 5 For Figure 4 The partial enlarged view at B in

[0031] Figure 6 It is a schematic second sectional structure diagram of the present invention.

[0032] Figure 7 For Figure 6 The partial enlarged view at C in

[0033] Figure 8 It is a schematic sectional structure diagram of the annular pipeline in the present invention.

[0034] In the figure: 1, the main body of the horizontal screw centrifuge; 2, the outer load housing; 3, the gas supply mechanism; 301, the mounting plate; 302, the gas inlet; 303, the support plate; 304, the annular pipeline; 305, the air supply pipeline; 306, the rotating ring; 307, the rotating shaft; 308, the guide block; 309, the one-way valve; 310, the sealing ring; 4, the diffusion mechanism; 401, the diversion air hood; 402, the centrifugal air wheel; 403, the rotating rod; 404, the diversion air blades; 405, the torsion spring; 406, the sliding rod; 407, the sliding groove; 5, the auxiliary air supply mechanism; 501, the axial flow air wheel; 503, the rectangular connecting part; 504, the cylinder; 505, the connecting ring; 6, the driving mechanism; 601, the solenoid valve; 602, the first connecting pipeline; 603, the second connecting pipeline. Detailed implementation manners

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment 1

[0037] Due to the influence of factors such as the operating environment inside the main body 1 of the horizontal screw centrifuge, it is necessary to improve the traditional method of directly injecting protective gases such as nitrogen into the gas protection mechanism, so that the protective gas can quickly and evenly diffuse inside the main body 1 of the horizontal screw centrifuge, improve the efficiency of gas protection and achieve a better gas protection effect. Therefore, Embodiment 1 is proposed;

[0038] Please refer to Figures 1-8 , a gas protection mechanism for a horizontal screw centrifuge, including the main body 1 of the horizontal screw centrifuge. An outer load housing 2 is provided on the main body 1 of the horizontal screw centrifuge. A gas supply mechanism 3 is provided on the outer load housing 2. The gas supply mechanism 3 includes a mounting plate 301 provided on the outer load housing 2, and a gas inlet 302 is opened on the mounting plate 301;

[0039] A support plate 303 is provided on the mounting plate 301. An annular pipeline 304 is provided on the support plate 303 for connecting the protective gas. An air supply pipeline 305 is provided on the annular pipeline 304. One end of the gas inlet 302 is communicated with the air supply pipeline 305, and the other end of the gas inlet 302 is communicated with the inner cavity of the outer load housing 2;

[0040] A diffusion mechanism 4 is also provided on the outer load housing 2. The diffusion mechanism 4 includes a guide air hood 401 provided on the outer load housing 2, and a centrifugal air wheel 402 is rotatably provided on the guide air hood 401. The diffusion mechanism 4 evenly diffuses the protective gas in the outer load housing 2 into the horizontal scroll centrifuge main body 1 by the rotation of the centrifugal air wheel 402;

[0041] The air supply mechanism 3 further includes a sealing ring 310. One end of the sealing ring 310 is connected to the outer load housing 2, and the other end of the sealing ring 310 is connected to the mounting plate 301. The sealing space formed by the sealing ring 310 allows the protective gas to enter the horizontal scroll centrifuge main body 1.

[0042] In this embodiment: The outer load housing 2 is installed on the horizontal scroll centrifuge main body 1, and the inner cavity of the outer load housing 2 is communicated with the inner cavity of the horizontal scroll centrifuge main body 1. A mounting plate 301 is installed outside the outer load housing 2 on the outer side of the horizontal scroll centrifuge main body 1, and a sealing ring 310 is installed between the mounting plate 301 and the housing of the outer load housing 2 to form a sealing space.

[0043] A gas inlet 302 is provided on the mounting plate 301. One end of the gas inlet 302 is installed with a gas supply pipe 305, and the other end leads to the sealing space formed by the sealing ring 310. A support plate 303 is installed on the mounting plate 301, and an annular pipe 304 is installed on the support plate 303. The annular pipe 304 has two ports.

[0044] One of the ports can be used to connect to a nitrogen generating device or the like to inject nitrogen into the annular pipe 304, then enter the gas supply pipe 305 from the other port of the annular pipe 304, and finally inject the gas into the gas inlet 302 and enter the outer load housing 2.

[0045] On the side of the outer load housing 2 inside the horizontal scroll centrifuge main body 1, a guide air hood 401 is installed, and a centrifugal air wheel 402 is rotatably installed on the guide air hood 401. By the rotation of the centrifugal air wheel 402, the introduced protective gas can be swung around, so that the protective gas is evenly diffused into the horizontal scroll centrifuge main body 1.

[0046] Embodiment 2

[0047] The rotation of the centrifugal air wheel 402 requires power drive, and the method of adding extra power undoubtedly increases the overall operation cost of the device and causes unnecessary waste of resources. Therefore, Embodiment 2 is proposed;

[0048] This embodiment is an improvement description based on Embodiment 1. Specifically, please refer to Figures 2-8 , The air supply mechanism 3 further includes a rotating ring 306 rotatably provided on the annular pipe 304. A rotating shaft 307 is provided on the rotating ring 306, and the centrifugal air wheel 402 is provided on the rotating shaft 307;

[0049] The air supply mechanism 3 further includes a guide block 308 provided on the swivel ring 306, and a check valve 309 is provided in the annular pipeline 304.

[0050] In this embodiment: A swivel ring 306 is rotatably installed on the annular pipeline 304, and a corresponding sealing mechanism can be added to enhance the sealing performance between the two. And a rotating shaft 307 is installed at the center of the swivel ring 306, and the centrifugal air wheel 402 is installed on the rotating shaft 307.

[0051] A guide block 308 is installed on the swivel ring 306. The guide block 308 rotates inside the annular pipeline 304, and a check valve 309 is installed between the two ports of the annular pipeline 304. The check valve 309 and the guide block 308 cause the gas in the annular pipeline 304 to form a one-way annular air flow as much as possible.

[0052] The annular air flow drives the swivel ring 306 and the rotating shaft 307 to rotate, thereby driving the centrifugal air wheel 402 to rotate.

[0053] Embodiment 3

[0054] According to the different power and wind speeds of the gas injected into the annular pipeline 304, if the size of the air guide opening of the air guide hood 401 is fixed, it cannot adapt to the change of the wind speed. Therefore, Embodiment 3 is proposed;

[0055] This embodiment is an improved description based on Embodiment 1. Specifically, please refer to Figures 2-6 , the diffusion mechanism 4 further includes a plurality of rotating rods 403 provided on the air guide hood 401. A plurality of air guide vanes 404 and torsion springs 405 are provided on the plurality of rotating rods 403, and the plurality of torsion springs 405 are all connected to the air guide hood 401;

[0056] The diffusion mechanism 4 further includes a plurality of sliding rods 406 respectively provided on the plurality of air guide vanes 404. A plurality of sliding grooves 407 are opened on the air guide hood 401, and the plurality of sliding rods 406 are respectively slidably arranged in the plurality of sliding grooves 407.

[0057] In this embodiment: The air guide opening of the air guide hood 401 is composed of a plurality of evenly distributed air guide vanes 404. A plurality of rotating rods 403 are installed on the air guide hood 401, and the plurality of air guide vanes 404 are respectively rotatably installed on the plurality of rotating rods 403.

[0058] One ends of the plurality of torsion springs 405 are respectively fixed on the plurality of rotating rods 403, and the other ends are all fixed on the air guide hood 401. When the air flow velocity of the air flow thrown by the centrifugal air wheel 402 is relatively high, it will push the plurality of air guide vanes 404 to expand outward. Thereby expanding the air outlet to adapt to the air flow with a higher flow velocity.

[0059] At this time, the torsion spring 405 is twisted, and several slide bars 406 slide along several chutes 407 to play a guiding and limiting role.

[0060] After the flow rate drops, several guiding wind vanes 404 will reset under the resilience of several torsion springs 405.

[0061] Embodiment 4

[0062] In order to further accelerate the speed of the air flow entering the main body 1 of the horizontal spiral centrifuge, and this acceleration process is controllable and adjustable, Embodiment 4 is proposed;

[0063] This embodiment is an improved description based on Embodiment 2. Specifically, please refer to Figures 2-7 , an auxiliary air supply mechanism 5 is further provided in the outer load housing 2 for auxiliary air supply. The auxiliary air supply mechanism 5 includes an axial flow wind wheel 501 arranged in the outer load housing 2;

[0064] The axial flow wind wheel 501 is connected to the rotating shaft 307, and the axial flow wind wheel 501 rotates to assist in blowing the gas in the outer load housing 2 into the main body 1 of the horizontal spiral centrifuge;

[0065] The auxiliary air supply mechanism 5 further includes a rectangular connecting portion 503 arranged on the rotating shaft 307, and the axial flow wind wheel 501 is slidably arranged on the rectangular connecting portion 503;

[0066] The auxiliary air supply mechanism 5 further includes two cylinders 504 symmetrically arranged in the outer load housing 2. A connecting ring 505 is arranged on the piston rods of the two cylinders 504, and the axial flow wind wheel 501 is rotatably arranged on the connecting ring 505.

[0067] In this embodiment: The middle section of the rotating shaft 307 is set as the rectangular connecting portion 503. The axial flow wind wheel 501 is slidably installed on the rectangular connecting portion 503. When the rotating shaft 307 rotates, the axial flow wind wheel 501 will also rotate. The rotation of the axial flow wind wheel 501 causes the air flow in the outer load housing 2 to be accelerated and pushed into the main body 1 of the horizontal spiral centrifuge according to Bernoulli's principle.

[0068] The degree of acceleration is determined by the distance of the axial flow wind wheel 501 from the air inlet of the guiding wind cover 401. Two cylinders 504 are symmetrically installed on the inner wall of the outer load housing 2. A connecting ring 505 is installed on the piston rods of the two cylinders 504, and the axial flow wind wheel 501 is rotatably installed on the connecting ring 505.

[0069] By operating and telescoping the two cylinders 504, the axial flow wind wheel 501 can be driven to move left and right.

[0070] Embodiment 5

[0071] In the above background art (CN202011537273.1), the injection speed of the air flow should be linked to the oxygen content detected in the main body 1 of the horizontal scroll centrifuge and adjusted intelligently. For this purpose, Embodiment 5 is proposed;

[0072] This embodiment is an improved description based on Embodiment 4. Specifically, please refer to Figures 2-7 , a driving mechanism 6 is further provided on the outer load housing 2 for controlling the operation of the two cylinders 504. The driving mechanism 6 includes a solenoid valve 601 provided on the outer load housing 2, and the solenoid valve 601 is connected to the air supply pipeline 305;

[0073] The solenoid valve 601 is provided with a first connecting pipeline 602 and a second connecting pipeline 603. The first connecting pipeline 602 is connected to both of the two cylinders 504, and the second connecting pipeline 603 is connected to both of the two cylinders 504.

[0074] In this embodiment: An oxygen content detection device can be optionally installed in the main body 1 of the horizontal scroll centrifuge and electrically connected to the solenoid valve 601, or intelligent control can be achieved through connection with a PLC controller or the like. The specific setting, working principle, etc. of the oxygen content detection device can refer to the above background art (CN202011537273.1).

[0075] The first connecting pipeline 602 is a tee, and both ends are respectively installed at one end of the piston rods of the two cylinders 504, while both ends of the second connecting pipeline 603 are respectively installed at the other end of the piston rods of the two cylinders 504.

[0076] By the solenoid valve 601 according to the change of the oxygen content detection data in the main body 1 of the horizontal scroll centrifuge, the air supply pipeline 305 can be correspondingly connected to the first connecting pipeline 602 or the second connecting pipeline 603, so as to control the telescopic rods of the two cylinders 504 to extend and retract.

[0077] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0078] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and retouches can still be made, and these improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A gas protection mechanism for a horizontal scroll centrifuge, characterized in that it includes a horizontal scroll centrifuge main body (1), an outer load housing (2) is arranged on the horizontal scroll centrifuge main body (1), a gas supply mechanism (3) is arranged on the outer load housing (2), the gas supply mechanism (3) includes a mounting plate (301) arranged on the outer load housing (2), and a gas inlet (302) is opened on the mounting plate (301); a support plate (303) is arranged on the mounting plate (301), and an annular pipe (304) for connecting a protective gas is arranged on the support plate (303), a gas delivery pipe (305) is arranged on the annular pipe (304), one end of the gas inlet (302) is communicated with the gas delivery pipe (305), and the other end of the gas inlet (302) is communicated with the inner cavity of the outer load housing (2); a diffusion mechanism (4) is further arranged on the outer load housing (2), the diffusion mechanism (4) includes a guide wind cover (401) arranged on the outer load housing (2), a centrifugal wind wheel (402) is rotatably arranged on the guide wind cover (401), and the diffusion mechanism (4) evenly diffuses the protective gas in the outer load housing (2) into the horizontal scroll centrifuge main body (1) by the rotation of the centrifugal wind wheel (402); the gas supply mechanism (3) further includes a rotating ring (306) rotatably arranged on the annular pipe (304), a rotating shaft (307) is arranged on the rotating ring (306), and the centrifugal wind wheel (402) is arranged on the rotating shaft (307); the gas supply mechanism (3) further includes a guide block (308) arranged on the rotating ring (306), and a one-way valve (309) is arranged in the annular pipe (304); the gas supply mechanism (3) further includes a sealing ring (310), one end of the sealing ring (310) is connected to the outer load housing (2), and the other end of the sealing ring (310) is connected to the mounting plate (301), and the protective gas enters the horizontal scroll centrifuge main body (1) through the sealing space formed by the sealing ring (310).

2. A gas protection mechanism for a horizontal scroll centrifuge according to claim 1, characterized in that: the diffusion mechanism (4) further includes a plurality of rotating rods (403) arranged on the guide wind cover (401), a plurality of guide wind blades (404) and torsion springs (405) are arranged on the plurality of rotating rods (403), and the plurality of torsion springs (405) are all connected to the guide wind cover (401).

3. A gas protection mechanism for a horizontal scroll centrifuge according to claim 2, characterized in that: the diffusion mechanism (4) further includes a plurality of sliding rods (406) respectively arranged on the plurality of guide wind blades (404), a plurality of sliding grooves (407) are opened on the guide wind cover (401), and the plurality of sliding rods (406) are respectively slidably arranged in the plurality of sliding grooves (407).

4. A gas protection mechanism for a horizontal scroll centrifuge according to claim 3, characterized in that: an auxiliary gas delivery mechanism (5) for auxiliary gas delivery is further arranged in the outer load housing (2), and the auxiliary gas delivery mechanism (5) includes an axial flow wind wheel (501) arranged in the outer load housing (2); The axial flow impeller (501) is connected to the rotating shaft (307), and the gas in the outer load housing (2) is blown into the horizontal scroll centrifuge main body (1) by the rotation of the axial flow impeller (501) for assistance.

5. A gas protection mechanism for a horizontal scroll centrifuge according to claim 4, characterized in that: The auxiliary air supply mechanism (5) further includes a rectangular connecting portion (503) provided on the rotating shaft (307), and the axial flow impeller (501) is slidably provided on the rectangular connecting portion (503).

6. A gas protection mechanism for a horizontal scroll centrifuge according to claim 5, characterized in that: The auxiliary air supply mechanism (5) further includes two cylinders (504) symmetrically arranged in the outer load housing (2), a connecting ring (505) is provided on the piston rods of the two cylinders (504), and the axial flow impeller (501) is rotatably provided on the connecting ring (505).

7. A gas protection mechanism for a horizontal scroll centrifuge according to claim 6, characterized in that: A driving mechanism (6) is further provided on the outer load housing (2) for controlling the operation of the two cylinders (504). The driving mechanism (6) includes a solenoid valve (601) provided on the outer load housing (2), and the solenoid valve (601) is connected to the air supply pipeline (305); A first connecting pipeline (602) and a second connecting pipeline (603) are provided on the solenoid valve (601). The first connecting pipeline (602) is connected to both of the two cylinders (504), and the second connecting pipeline (603) is connected to both of the two cylinders (504).

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