Centrifugal machine protection device

Abstract

The centrifugal machine protection device comprises a vacuum pump with the air inlet end communicating with an inner cavity of a centrifugal machine, and an air outlet in the upper end of the vacuum pump communicating with the air inlet end of the lower end of a filter box; a flow guide plate is arranged in the filter box, the flow guide plate is obliquely arranged, the lower end of the flow guide plate is communicated with a liquid discharge pipe, a plurality of rows of vent holes are formed in the flow guide plate, each row of vent holes are formed at intervals in the oblique direction of the flow guide plate, and flow guide grooves extending in the oblique direction are formed among the multiple rows of vent holes; an exhaust pipe is arranged at the top of the filter box; the inert gas conveying pipe is used for inputting inert gas into the inner cavity of the centrifugal machine. According to the centrifugal machine protection device, the filtering capacity is improved, and meanwhile the liquid flow guiding capacity and the pipeline protection capacity of the centrifugal machine protection device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifuge protection, in particular to a centrifuge protection device. Background Art

[0002] A centrifuge is a mechanical device that uses centrifugal force to separate different components in a mixture. The main function of a centrifuge is to separate liquid from solid particles or two liquids with different densities through the centrifugal force generated by rotation. Centrifuges process a wide variety of materials, some of which are flammable and explosive. Since the centrifuge is sealed during operation, this can easily cause combustion and explosion accidents.

[0003] To ensure centrifuge safety, nitrogen is typically used as a protective atmosphere to reduce oxygen concentration and minimize the risk of explosion. This process typically requires a vacuum pump to extract the gas from the centrifuge chamber. However, some of the gas inside the centrifuge chamber may be contaminated with impurities, so direct discharge can easily cause air pollution. Furthermore, if the gas is not filtered, the vacuum pump line may become clogged, preventing the centrifuge from being effectively evacuated, resulting in insufficient oxygen concentration and an explosion risk. Utility Model Content

[0004] To solve the above problems, the present application provides a centrifuge protection device, comprising:

[0005] A vacuum pump, the air inlet of which is connected to the inner cavity of the centrifuge, and the air outlet at the upper end of which is connected to the air inlet at the lower end of the filter box;

[0006] A filter box is provided with a guide plate inside the filter box, the guide plate is arranged at an angle, and its lower end is connected to the drain pipe, multiple rows of vents are provided on the guide plate, and each row of vents is arranged at intervals along its inclination direction, and guide grooves extending along the inclination direction are provided between the multiple rows of vents, and an exhaust pipe is provided on the top of the filter box;

[0007] The inert gas delivery pipe is used to input inert gas into the inner cavity of the centrifuge.

[0008] Optionally, a filter assembly is installed above the guide plate, and the filter assembly includes a slot, a limit plate, a filter plate, a connecting block and a sealing plate.

[0009] Among them, a slot is provided on the side wall of the filter box, and limit plates are fixedly connected to the upper and lower sides of the slot on the inner wall of the filter box. Filter plates are provided between the limit plates, and a connecting block is provided in the slot. The connecting block is fixed by a sealing plate fixedly installed on the outer wall of the filter box.

[0010] Optionally, a plurality of positioning holes are opened on the sealing plate, a positioning column is fixed on the filter box, the end of the positioning column passing through the sealing plate has a thread, and the locking nut is screwed into the thread of the positioning column.

[0011] Optionally, a handle is installed on the outer side of the sealing plate, and an anti-slip cloth is also provided on the handle.

[0012] Optionally, a sealing ring is installed between the connecting block and the slot.

[0013] Optionally, the inner side of the connecting block contacts the filter plate, and the outer side is flush with the outer wall of the filter box.

[0014] Optionally, the wall of the inert gas delivery pipe comprises a flame retardant layer and two isolation zones from the outside to the inside, and a plurality of buffer columns are evenly distributed along the circumferential direction in the annular region between the two isolation zones.

[0015] Optionally, the buffer column is an elastic rubber buffer column.

[0016] Optionally, a flow valve is installed on the air inlet pipe of the filter box.

[0017] Optionally, an oxygen concentration detector is installed on the top of the filter box.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the centrifuge protection device not only improves the filtering capacity, but also improves the liquid flow conducting capacity and pipeline protection capacity of the centrifuge protection device.

[0019] (1) A slot is opened on the side wall of the filter box, and the limit plate is installed above and below the slot in the filter box. Therefore, when assembling the filter plate, the filter plate can pass through the slot and be limited by the limit plate. After the vacuum pump works, the gas in the centrifuge cavity is filtered through the filter plate. When assembling and removing the filter plate, the filter plate can be replaced by holding the handle, which greatly improves the convenience of replacing the filter plate. The outside of the handle is connected to the anti-slip cloth, so the anti-slip cloth forms a certain anti-slip protection, thereby better improving the overall filtering capacity during the operation;

[0020] (2) The guide plate is installed inside the filter box, and the guide plate is installed at an angle, and a guide groove is opened on the top of the guide plate. Therefore, the opening of the guide groove facilitates the liquefaction and diversion of the liquid in the gas. After the diversion, the liquid can be discharged at the position of the drain pipe, thereby better improving the overall liquid diversion capacity during the operation;

[0021] (3) A flame retardant layer is distributed inside the inert gas delivery pipe, so the flame retardant layer has a certain flame retardant effect. At the same time, an isolation belt is fixed inside the inert gas delivery pipe, and buffer columns are evenly distributed between the isolation belts, thereby improving the protection capability of the inert gas delivery pipe during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above features and technical advantages of the present invention will become clearer and easier to understand by describing the embodiments thereof in conjunction with the following drawings.

[0023] Figure 1 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the top view of the deflector structure of an embodiment of the utility model;

[0025] Figure 3 This is a schematic cross-sectional view of a nitrogen delivery pipe according to an embodiment of the present invention;

[0026] Figure 4 for Figure 1 Schematic diagram of the enlarged cross-section structure at point A in the middle.

[0027] In the figure: 1. Centrifuge; 2. Solenoid valve; 3. Inert gas delivery pipe; 4. Vacuum pump; 5. Inlet pipe; 6. Guide plate; 7. Drain pipe; 8. Filter box; 9. Oxygen concentration detector; 10. Exhaust pipe; 11. Guide groove; 12. Flame retardant layer; 13. Isolation belt; 14. Delivery channel; 15. Buffer column; 16. Limit plate; 17. Filter plate; 18. Connecting block; 19. Sealing ring; 20. Positioning column; 21. Positioning hole; 22. Closing plate; 23. Handle; 24. Anti-slip cloth; 25. Locking nut; 30. Slot; 61. Vent hole DETAILED DESCRIPTION

[0028] The following describes embodiments of the present invention with reference to the accompanying drawings. Those skilled in the art will recognize that the described embodiments may be modified in various ways or combinations thereof without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of the claims. Furthermore, throughout this specification, the drawings are not drawn to scale, and like reference numerals represent like parts.

[0029] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Among them, "fixed connection" means that the two are connected to each other and the relative position relationship after the connection remains unchanged. "Rotational connection" means that the two are connected to each other and can rotate relative to each other after the connection. The directional terms mentioned in the embodiments of the present application, such as "upper", "lower", "inner", "outer", etc., are only referenced to the directions of the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. Among them, the two components are obtained by an integrated structure through an integrated molding process, which means that in the process of forming one of the two components, the component is connected to the other component, and there is no need to connect the two components together through reprocessing (such as bonding, welding, snap connection, screw connection).

[0030] See also Figure 1-4 The utility model provides an embodiment: a centrifuge protection device, including a vacuum pump 4, which is used to extract the gas in the centrifuge 1 and transport it to the filter box 8; the filter box 8 is used to separate the gas therein into gas and liquid, and filter and discharge the separated gas; an inert gas delivery pipe 3, which is used to input inert gas, such as nitrogen, helium, argon, etc., into the centrifuge 1.

[0031] like Figure 1 In the embodiment, the air inlet of the vacuum pump is connected to the inner cavity of the centrifuge 1, and the gas in the inner cavity can be extracted. The air outlet of the vacuum pump 4 is upward and connected to the air inlet pipe 5 of the filter box 8, and the gas extracted from the inner cavity of the centrifuge is transported to the filter box 8. An exhaust pipe 10 is installed at the top of the filter box 8, preferably in the middle position, to discharge the filtered gas.

[0032] A guide plate 6 is provided in the filter box 8, preferably near the bottom. The guide plate 6 is tilted, and its lower end is connected to the drain pipe 7. Multiple rows of vent holes 61 are provided on the guide plate 6. Figure 2 The center has two rows of vent holes, with each row of vent holes 61 spaced apart along its oblique direction. Diversion grooves 11 extending along the oblique direction are provided between the rows of vent holes. The gas delivered from the vacuum pump may contain water vapor. After the gas passes through the vent holes, the water vapor flows along the diversion grooves 11 into the drain pipe 7 and is discharged externally.

[0033] A filter assembly is installed above the guide plate 6 , and the filter assembly includes a limit plate 16 , a filter plate 17 , a connecting block 18 , a sealing ring 19 , a positioning column 20 , a positioning hole 21 , and a sealing plate 22 .

[0034] Slots 30 are provided on the side walls of the filter box 8. Limiting plates 16 are fixedly connected to the inner wall of the filter box above and below slots 30. Limiting plates 16 can be symmetrically arranged about the central axis of the filter box 8. Filter plates 17 are installed between the limiting plates 16. Filter plates 17 are used to filter the gas after gas-liquid separation to remove impurities.

[0035] A connecting block 18 is installed in the slot 30 , and the wall thickness of the connecting block 18 is the same as that of the filter box, so that the inner side of the connecting block 18 contacts the side of the filter plate 17 and the outer side is flush with the outer wall of the filter box.

[0036] A sealing plate 22 is fixed to the outside of the connecting block 18. Specifically, a plurality of positioning holes 21 are formed on the sealing plate 22. The positioning holes 21 can be symmetrically distributed about the central axis of the sealing plate 22. The sealing plate 22 can be fixedly mounted on the filter box 8 by passing bolts through the positioning holes. For example, a positioning column 20 can be fixedly connected to the filter box 8. The end of the positioning column 20 that passes through the sealing plate 22 has a thread and can be screwed onto it by a locking nut 25. The locking nut 25 forms a threaded locking with the sealing plate 22 to fix the sealing plate 22 on the filter box 8.

[0037] In some embodiments, a handle 23 is installed in the middle of the outer side of the sealing plate 22. When the filter plate 17 needs to be cleaned or replaced with a new one, the sealing plate 22 can be removed, and the filter plate 17 can be removed from between the limiting plates 16 for cleaning or replacement. The handle 23 can also be covered with an anti-slip cloth 24.

[0038] In some embodiments, a sealing ring 19 is further installed on the slot. Specifically, a groove can be machined on the outer periphery of the connecting block 18, and the sealing ring 19 is installed in the groove. The sealing ring 19 is used to seal the gap between the connecting block 18 and the slot to prevent leakage.

[0039] In some embodiments, an oxygen concentration detector 9 is installed on the top of the filter box 8.

[0040] In some embodiments, a delivery channel 14 is formed within the inert gas delivery pipe 3, and a solenoid valve 2 is mounted on the inert gas delivery pipe 3. The wall of the inert gas delivery pipe 3 comprises a flame-retardant layer 12 and an isolation strip 13 from the outside to the inside. Preferably, two isolation strips 13 are used, and a plurality of buffer columns 15 are evenly distributed along the circumference of the annular region between the two isolation strips 13. The buffer columns 15 are arranged in a circular pattern about the center of the inert gas delivery pipe 3. Furthermore, the buffer columns 15 are elastic rubber buffer columns, which can effectively cushion the impact of the gas on the delivery pipe.

[0041] Furthermore, a flow valve is installed in the air inlet pipe 5 to detect the flow of extracted gas.

[0042] The working principle of the centrifuge protection device is explained below: First, during operation, the gas in the inner cavity of the centrifuge 1 is extracted through the vacuum pump 4, and then the gas is guided to the interior of the filter box 8 through the air inlet pipe 5. Since the guide plate 6 is installed at an angle, the opening of the guide groove 11 facilitates the liquefaction and diversion of the liquid in the gas. The guided liquid enters the drain pipe 7 through the guide groove 11 and is discharged. The gas enters the filter box 8 and is filtered by the filter plate 17 before being discharged through the exhaust pipe 10. After the gas is extracted, nitrogen is transported by the inert gas delivery pipe 3. At the same time, a flame retardant layer 12 is distributed inside the inert gas delivery pipe 3, so that the flame retardant layer 12 has a certain flame retardant effect. The nitrogen is transported and circulated through the delivery channel 14 to the interior of the centrifuge 1.

[0043] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A centrifuge protection device, characterized in that: include: A vacuum pump, the air inlet of which is connected to the inner cavity of the centrifuge, and the air outlet at the upper end of which is connected to the air inlet at the lower end of the filter box; A filter box is provided with a guide plate inside the filter box, the guide plate is arranged at an angle, and its lower end is connected to the drain pipe, multiple rows of vents are provided on the guide plate, and each row of vents is arranged at intervals along its inclination direction, and guide grooves extending along the inclination direction are provided between the multiple rows of vents, and an exhaust pipe is provided on the top of the filter box; The inert gas delivery pipe is used to input inert gas into the inner cavity of the centrifuge.

2. The centrifuge protection device according to claim 1, characterized in that: A filter assembly is installed above the guide plate, and the filter assembly includes a slot, a limit plate, a filter plate, a connecting block and a sealing plate. Among them, a slot is provided on the side wall of the filter box, and limit plates are fixedly connected to the upper and lower sides of the slot on the inner wall of the filter box. Filter plates are provided between the limit plates, and a connecting block is provided in the slot. The connecting block is fixed by a sealing plate fixedly installed on the outer wall of the filter box.

3. The centrifuge protection device according to claim 2, characterized in that: The sealing plate is provided with a plurality of positioning holes, a positioning post is fixed on the filter box, the end of the positioning post passing through the sealing plate is provided with a thread, and the locking nut is screwed into the thread of the positioning post.

4. The centrifuge protection device according to claim 2, characterized in that: A handle is installed on the outer side of the sealing plate, and an anti-slip cloth is also provided on the handle.

5. The centrifuge protection device according to claim 2, characterized in that: A sealing ring is installed between the connecting block and the slot.

6. The centrifuge protection device according to claim 2, characterized in that: The inner side of the connecting block contacts the filter plate, and the outer side is flush with the outer wall of the filter box.

7. The centrifuge protection device according to claim 1, characterized in that: The wall of the inert gas delivery pipe is composed of a flame retardant layer and two isolation zones from the outside to the inside, and a plurality of buffer columns are distributed along the circumferential direction in the annular area between the two isolation zones.

8. The centrifuge protection device according to claim 7, characterized in that: The buffer column is an elastic rubber buffer column.

9. The centrifuge protection device according to claim 1, characterized in that: A flow valve is installed on the air inlet pipe of the filter box.

10. The centrifuge protection device according to claim 1, characterized in that: An oxygen concentration detector is installed on the top of the filter box.

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