A detachable anti-residual rotor negative pressure centrifugal concentrator

Abstract

The utility model discloses a detachable anti-residual rotor's negative pressure centrifugal concentrator belongs to negative pressure centrifugal concentrator technical field, including negative pressure centrifugal concentrator body and the vacuum chamber of negative pressure centrifugal concentrator body top setting, the bottom of vacuum chamber is installed through the limiting column, the top of limiting column is fixed with the shaft, the outside of shaft is provided with three prism, is provided with the mounting mechanism between shaft and three prism, the outside of three prism is slidably connected with the cushion block, is established with the triangular groove of three prism matching in the inside of cushion block, the top of cushion block is rotatably installed with T type threaded tube. The utility model can form the circumferential, axial double restraint through the cushion block and three prism inlay and T type threaded tube thread fastening, effectively avoid the component loosening, ensure that the rotor is stably installed in the inside of vacuum chamber, and the installation stability is strong, reduces the vibration caused by the unstable assembly, improves equipment operation stability and reliability, reduces the component loss, prolongs the life.

Description

Technical Field

[0001] This utility model relates to a negative pressure centrifugal concentrator, and more particularly to a negative pressure centrifugal concentrator with a detachable anti-residue rotor, belonging to the technical field of negative pressure centrifugal concentrators. Background Technology

[0002] The negative pressure centrifugal concentrator utilizes centrifugal force, heating, and the vacuum provided by an external vacuum pump to achieve solvent evaporation. It can process multiple samples simultaneously and avoid cross-contamination. The operating procedure is as follows: first, load the sample into a test tube, then place the test tube inside the rotor, which is positioned in the vacuum chamber. To accelerate concentration, the heating device on the vacuum chamber wall can be activated to heat the sample. Finally, start the vacuum pump to extract the evaporated solvent from the vacuum chamber.

[0003] As the pressure in the vacuum chamber decreases, the boiling point of the solvent also decreases. Once the pressure drops to a certain level, the solvent can boil and evaporate at a lower temperature. Simultaneously, the equipment uses high-speed centrifugal rotation to ensure the sample is firmly fixed inside the test tube, preventing splashing or ejection of the solvent and guaranteeing concentration efficiency and sample purity.

[0004] Existing technologies still have shortcomings:

[0005] Existing negative pressure centrifugal concentrators typically use a combination of T-threaded pipes, bolts, and washers for rotor installation. Bolts provide axial preload, while washers achieve limiting force through contact surface friction. However, during long-term high-frequency operation, centrifugal vibration can easily lead to a decrease in bolt preload. In addition, frequent disassembly of the washers reduces the frictional limiting force, causing loose connections and unstable installation. Furthermore, the circular threaded connection between the motor shaft and the rotor lacks rigid anti-rotation constraints in the circumferential direction. During rotation, the threaded contact surface is prone to relative circumferential displacement, i.e., self-rotation, leading to installation instability.

[0006] To address these issues, a negative pressure centrifugal concentrator with a detachable, residue-proof rotor was designed. Utility Model Content

[0007] The main purpose of this invention is to provide a negative pressure centrifugal concentrator with a detachable, residue-proof rotor to solve the problems mentioned in the background art.

[0008] The objective of this utility model can be achieved by adopting the following technical solution:

[0009] A negative pressure centrifugal concentrator with a detachable anti-residue rotor includes a negative pressure centrifugal concentrator body and a vacuum chamber disposed on the top of the negative pressure centrifugal concentrator body;

[0010] A limiting post is installed through the bottom of the vacuum chamber. A rotating shaft is fixed to the top of the limiting post. A triangular prism is set on the outside of the rotating shaft. An installation mechanism is set between the rotating shaft and the triangular prism. A pad is slidably connected to the outside of the triangular prism. A triangular groove matching the triangular prism is opened inside the pad. A T-shaped threaded tube is rotatably installed on the top of the pad. The inside of the T-shaped threaded tube is threadedly connected to the top of the rotating shaft. A threaded opening matching the outside of the T-shaped threaded tube is opened inside the triangular prism. A rotor is movably installed on the outside of the triangular prism. A triangular hole is opened at the connection between the rotor and the triangular prism. A limiting component is set on the rotor.

[0011] Preferably, the installation mechanism includes a first insert and a fixing tube. The first insert is evenly fixed on the outside of the rotating shaft. The fixing tube is located at the bottom of the triangular prism. The bottom of the fixing tube is evenly provided with second inserts that engage with the first insert. An internal threaded ring is installed on the outer thread of the fixing tube, and the internal threaded ring is connected to the outer thread of the limiting post.

[0012] Preferably, a washer is fitted on the outer side of the top of the fixing tube, and a cushioning pad is provided on the top of the washer.

[0013] Preferably, the outer side of the triangular prism is uniformly provided with anti-slip pads, and the anti-slip pads are provided with anti-slip patterns.

[0014] Preferably, the T-shaped threaded tube has raised strips evenly distributed on its outer side, and a retaining ring is fitted on the outer side of the T-shaped threaded tube.

[0015] Preferably, the limiting component includes a limiting hole and an elastic ring. The limiting hole is evenly and annularly opened on the rotor. The elastic ring is movably installed inside the limiting hole, and a limiting groove is opened on the outer side of the elastic ring.

[0016] Preferably, the elastic ring is a rubber elastic ring, and the outer side of the elastic ring is provided with anti-slip texture.

[0017] Preferably, the second insert is a sector block, and the first insert is set as a sector block that matches the second insert.

[0018] Preferably, the internal threaded ring is a ring nut, and the outer side of the internal threaded ring is provided with knurled anti-slip texture.

[0019] Preferably, a cover plate is installed on the top of the negative pressure centrifugal concentrator body, and elastic blocks are evenly arranged on the side of the cover plate near the negative pressure centrifugal concentrator body.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] 1. This utility model utilizes the combined use of the negative pressure centrifugal concentrator body, vacuum chamber, limiting column, rotating shaft, triangular prism, threaded port, pad, triangular groove, T-shaped threaded tube, rotor, and triangular hole. The pad and triangular prism are fitted together, and the T-shaped threaded tube is threaded to form circumferential and axial double constraints, which effectively prevents the components from loosening. This ensures that the rotor is stably installed inside the vacuum chamber, resulting in strong installation stability, reducing vibration caused by unstable assembly, improving the stability and reliability of equipment operation, reducing component wear, and extending service life.

[0022] 2. This utility model, through the combined use of insert block 1, clip block, T-shaped internal thread tube and fixing tube, facilitates the separation of triangular prism and other components from the rotating shaft, without the need for complicated tools and multi-step operations, greatly simplifies the disassembly process, improves disassembly and assembly efficiency, and is more flexible, bringing convenience to people's use. Attached Figure Description

[0023] Figure 1 This is the front view of the present invention;

[0024] Figure 2 This is a schematic diagram showing the connection between the pad and the limiting block of this utility model;

[0025] Figure 3 This is a partial structural diagram of the present invention;

[0026] Figure 4 This is a schematic diagram of the rotating shaft of this utility model;

[0027] Figure 5 This is a schematic diagram showing the connection between the fixed tube and the T-shaped threaded tube of this utility model;

[0028] Figure 6 This is a schematic diagram of the rotor of this utility model.

[0029] In the diagram: 1. Body of the negative pressure centrifugal concentrator; 2. Vacuum chamber; 3. Limiting column; 4. Rotating shaft; 5. Triangular prism;

[0030] 6. Installation mechanism; 601. Insert block one; 602. Insert block two; 603. Internal threaded ring; 604. Fixing tube; 605. Washer;

[0031] 7. Threaded opening; 8. Spacer block; 9. Triangular groove; 10. T-shaped threaded tube; 11. Rotor; 12. Triangular hole;

[0032] 13. Limiting component; 1301. Limiting hole; 1302. Elastic ring; 1303. Limiting groove. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0034] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0035] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In the description of this utility model, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] Example 1

[0039] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, this embodiment proposes a detachable anti-residue rotor negative pressure centrifugal concentrator, including a negative pressure centrifugal concentrator body 1 and a vacuum chamber 2 provided on the top of the negative pressure centrifugal concentrator body 1;

[0040] A limiting post 3 is installed through the bottom of the vacuum chamber 2. A rotating shaft 4 is fixed to the top of the limiting post 3. A triangular prism 5 is provided on the outside of the rotating shaft 4. An installation mechanism 6 is provided between the rotating shaft 4 and the triangular prism 5. A pad 8 is slidably connected to the outside of the triangular prism 5. A triangular groove 9 matching the triangular prism 5 is opened inside the pad 8. A T-shaped threaded tube 10 is rotatably installed on the top of the pad 8. The inside of the T-shaped threaded tube 10 is threadedly connected to the top of the rotating shaft 4. A threaded opening 7 matching the outside of the T-shaped threaded tube 10 is opened inside the triangular prism 5. A rotor 11 is movably installed on the outside of the triangular prism 5. A triangular hole 12 is opened at the connection between the rotor 11 and the triangular prism 5. A limiting component 13 is provided on the rotor 11.

[0041] The rotor 11 is smoothly slid into the triangular prism 5 through the triangular hole 12 on its inner side, and then the pad 8 is aligned with the outer reference surface of the triangular prism 5 so that the triangular groove 9 in the pad 8 and the structure on the outer side of the triangular prism 5 are fitted together, while ensuring that the bottom end of the T-shaped threaded tube 10 is aligned with the top end of the rotating shaft 4.

[0042] Rotate the T-shaped threaded tube 10. Utilize the threaded engagement transmission relationship between the T-shaped threaded tube 10 and the inner threaded port 7 of the triangular prism 5 and the outer side of the rotating shaft 4 to drive the T-shaped threaded tube 10 to rotate downwards along the outer thread axis of the rotating shaft 4. During this process, the T-shaped threaded tube 10 drives the pad 8 to slide downwards synchronously along the outer side of the triangular prism 5 until the pad 8 is completely fitted onto the outer side of the triangular prism 5 and engages. The rotor 11 is stably fixed in the axial middle position by the clamping structure formed by the pad 8 and the mounting mechanism 6, achieving dual circumferential and axial limiting, and the assembly preparation work is completed.

[0043] When the negative pressure centrifugal concentrator body 1 is started, the power is transmitted to the rotating shaft 4 through the limiting column 3. The rotating shaft 4 synchronously drives the triangular prism 5 to rotate. The triangular prism 5 drives the pad 8 to move in a circumferential limiting manner through the pad 8. At the same time, the triangular prism 5 drives the rotor 11 to rotate synchronously through the triangular hole 12.

[0044] Example 2

[0045] The following section provides a further description of the scheme in Example 1, focusing on its specific working method. See the description below for details:

[0046] like Figure 2 , Figure 3 , Figure 4 ,and Figure 5As shown, in a preferred embodiment, based on the above method, the installation mechanism 6 further includes a first insert block 601 and a fixing tube 604. The first insert block 601 is evenly fixed on the outside of the rotating shaft 4. The fixing tube 604 is located at the bottom of the triangular prism 5. The bottom of the fixing tube 604 is evenly provided with a second insert block 602 that engages with the first insert block 601. An internal threaded ring 603 is threaded on the outside of the fixing tube 604, and the internal threaded ring 603 is threadedly connected to the outside of the limiting post 3.

[0047] Insert the fixing tube 604 from the top of the rotating shaft 4, so that the fixing tube 604 drives the triangular prism 5 to slide and be installed on the outside of the rotating shaft 4. The fixing tube 604 drives the second insert 602 to be inserted into the gap between the first insert 601. Then screw the internal thread ring 603 downward, and the internal thread ring 603 rotates to the outside of the limiting post 3 and is threadedly connected to the outside of the limiting post 3, thus completing the installation and connection of the triangular prism 5 and the rotating shaft 4. When disassembling, screw the internal thread ring 603 upward to separate the internal thread ring 603 from the outside of the limiting post 3. Then lift the fixing tube 604 and the triangular prism 5 from the outside of the rotating shaft 4 and remove them.

[0048] like Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, a washer 605 is further provided on the outer side of the top of the fixing tube 604, and a buffer pad is provided on the top of the washer 605.

[0049] The buffer pad provides support to the bottom of rotor 11, while also serving as a buffer and protection mechanism.

[0050] like Figure 3 As shown, in a preferred embodiment, based on the above method, the outer side of the triangular prism 5 is further provided with anti-slip pads, and the anti-slip pads are provided with anti-slip patterns.

[0051] The anti-slip pad can increase the contact friction between the triangular prism 5 and the rotor 11 and the pad 8, and prevent the rotor 11 or the pad 8 from sliding along the outside of the triangular prism 5.

[0052] like Figure 1 , Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, the outer side of the T-shaped threaded tube 10 is further provided with protruding strips, and the outer side of the T-shaped threaded tube 10 is fitted with a retaining ring.

[0053] The T-shaped structure makes it easy for operators to hold and screw, reducing the difficulty of applying force during assembly, while the retaining ring can restrict the axial movement of the T-shaped threaded tube 10 and the pad 8.

[0054] like Figure 2 , Figure 3 and Figure 6As shown, in a preferred embodiment, based on the above method, the limiting component 13 further includes a limiting hole 1301 and an elastic ring 1302. The limiting hole 1301 is uniformly and annularly opened on the rotor 11. The elastic ring 1302 is movably installed inside the limiting hole 1301. A limiting groove 1303 is opened on the outer side of the elastic ring 1302.

[0055] When removing the elastic ring 1302 from the inside of the limiting hole 1301, first manually or with a screwdriver or other tools, squeeze the outer side of the elastic ring 1302 to deform it until the limiting groove 1303 on the outer side of the elastic ring 1302 separates from the limiting hole 1301. Then, insert a tool or your hand into the gap between the limiting groove 1303 and the limiting hole 1301, and pull the elastic ring 1302 out of the limiting hole 1301. This makes it easy to disassemble and replace the elastic ring 1302 and to clean any material residue on the elastic ring 1302 and the limiting groove 1303.

[0056] like Figure 2 , Figure 3 and Figure 6 As shown, in a preferred embodiment, based on the above method, the elastic ring 1302 is further made of rubber, and the outer side of the elastic ring 1302 is provided with anti-slip texture.

[0057] The rubber material has good elastic deformation ability and high friction. Combined with the anti-slip texture on the outside, it can increase the friction between the elastic ring 1302 and the test tube and the limiting hole 1301.

[0058] like Figure 4 and Figure 5 As shown, in a preferred embodiment, based on the above method, the second insert 602 is a sector block, and the first insert 601 is set as a sector block that matches the second insert 602.

[0059] The fan-shaped block structure of the second insert 602 has a larger contact area with the first insert 601, which improves the installation stability between the two.

[0060] like Figure 5 As shown, in a preferred embodiment, based on the above method, the internal thread ring 603 is further provided as an annular nut, and the outer side of the internal thread ring 603 is provided with knurled anti-slip texture.

[0061] The knurled anti-slip texture increases the friction between the hand and the internal threaded ring 603, preventing slippage during screwing and improving the ease of disassembly and installation.

[0062] like Figure 3As shown, in a preferred embodiment, based on the above method, a cover plate is further installed on the top of the negative pressure centrifugal concentrator body 1, and elastic blocks are evenly arranged on the side of the cover plate near the negative pressure centrifugal concentrator body 1.

[0063] The evenly distributed elastic blocks on the cover plate increase the protection of the cover plate, prevent the cover plate from directly contacting the top of the negative pressure centrifugal concentrator body 1, and improve the protective force of the cover plate.

[0064] Example 3

[0065] The solutions in Embodiments 1 and 2 will be further described below with reference to their specific working methods.

[0066] The fixing tube 604 is inserted axially from the top of the rotating shaft 4, and the triangular prism 5 and the washer 605 are slidably fitted onto the outside of the rotating shaft 4 in sequence. The fixing tube 604 is pushed downward so that the second insertion block 602 at its bottom is fully inserted between the first insertion block 601 on the rotating shaft 4, forming circumferential positioning and restricting the relative rotation between the fixing tube 604 and the rotating shaft 4.

[0067] Tighten the internal threaded ring 603 downwards until it rotates to the outside of the insert block 601 and the internal threaded ring 603 is threadedly connected to the outside of the limiting post 3, thus completing the fixed connection between the triangular prism 5 and the rotating shaft 4.

[0068] The rotor 11 is smoothly slid into the triangular prism 5 through the triangular hole 12 on its inner side, so that the rotor 11 is circumferentially positioned with the triangular prism 5 and relative rotation is avoided.

[0069] Take the pad 8, align the triangular groove 9 on its inner side with the outer structure of the triangular prism 5, slide the pad 8 downward along the axis of the triangular prism 5, and at the same time, the T-shaped threaded tube 10 moves with the pad 8 and aligns with the top of the rotating shaft 4.

[0070] Rotate the T-shaped threaded tube 10 downwards. Utilize its threaded engagement with the rotating shaft 4 to drive the T-shaped threaded tube 10 to rotate downwards along the external thread axis of the rotating shaft 4. During this process, the T-shaped threaded tube 10 drives the pad 8 to slide downwards synchronously along the outer side of the triangular prism 5 until the pad 8 is completely fitted and engaged on the outer side of the triangular prism 5. At this time, the rotor 11 is stably fixed in the axial middle position by the clamping structure formed by the pad 8 and the washer 605, achieving dual circumferential and axial limiting, and the assembly work is completed.

[0071] When disassembly is required, turn the internal threaded ring 603 counterclockwise upward to completely separate it from the outer thread of the limiting post 3; then lift the outer side of the fixing tube 604 upward, and simultaneously drive the triangular prism 5 and the washer 605 to be taken out from the outside of the rotating shaft 4. Then slide the rotor 11 along the outside of the triangular prism 5 to remove it, thus completing the component disassembly.

[0072] The above description is only a further embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope disclosed by the present utility model, based on the technical solution and concept of the present utility model, shall fall within the protection scope of the present utility model.

Claims

1. A negative pressure centrifugal concentrator with a detachable anti-residue rotor, comprising a negative pressure centrifugal concentrator body (1) and a vacuum chamber (2) disposed on the top of the negative pressure centrifugal concentrator body (1). Its features are: A limiting post (3) is installed through the bottom of the vacuum chamber (2). A rotating shaft (4) is fixed on the top of the limiting post (3). A triangular prism (5) is provided on the outside of the rotating shaft (4). An installation mechanism (6) is provided between the rotating shaft (4) and the triangular prism (5). A pad (8) is slidably connected to the outside of the triangular prism (5). A triangular groove (9) matching the triangular prism (5) is opened inside the pad (8). A T-shaped threaded tube (10) is rotatably installed on the top of the pad (8). The inside of the T-shaped threaded tube (10) is threadedly connected to the top of the rotating shaft (4). A threaded opening (7) matching the outside of the T-shaped threaded tube (10) is opened inside the triangular prism (5). A rotor (11) is movably installed on the outside of the triangular prism (5). A triangular hole (12) is opened at the connection between the rotor (11) and the triangular prism (5). A limiting component (13) is provided on the rotor (11).

2. The negative pressure centrifugal concentrator with a detachable anti-residue rotor according to claim 1, characterized in that: The mounting mechanism (6) includes a first insert (601) and a fixing tube (604). The first insert (601) is evenly fixed on the outside of the rotating shaft (4). The fixing tube (604) is located at the bottom of the triangular prism (5). The bottom of the fixing tube (604) is evenly provided with a second insert (602) that engages with the first insert (601). The outer thread of the fixing tube (604) is threaded with an inner thread ring (603), and the inner thread ring (603) is threaded with the outer thread of the limiting post (3).

3. A negative pressure centrifugal concentrator with a detachable, residue-proof rotor according to claim 2, characterized in that: A washer (605) is fitted on the outer side of the top of the fixed tube (604), and a buffer pad is provided on the top of the washer (605).

4. A negative pressure centrifugal concentrator with a detachable, residue-proof rotor according to claim 1, characterized in that: The outer side of the triangular prism (5) is uniformly provided with anti-slip pads, and the anti-slip pads are provided with anti-slip patterns.

5. A negative pressure centrifugal concentrator with a detachable, residue-proof rotor according to claim 1, characterized in that: The T-shaped threaded tube (10) has convex strips evenly distributed on its outer side, and a retaining ring is fitted on the outer side of the T-shaped threaded tube (10).

6. A negative pressure centrifugal concentrator with a detachable, residue-proof rotor according to claim 1, characterized in that: The limiting component (13) includes a limiting hole (1301) and an elastic ring (1302). The limiting hole (1301) is evenly and annularly opened on the rotor (11). The elastic ring (1302) is movably installed inside the limiting hole (1301). A limiting groove (1303) is opened on the outer side of the elastic ring (1302).

7. A negative pressure centrifugal concentrator with a detachable, residue-proof rotor according to claim 6, characterized in that: The elastic ring (1302) is a rubber elastic ring, and the outer side of the elastic ring (1302) is provided with anti-slip texture.

8. A negative pressure centrifugal concentrator with a detachable, residue-proof rotor according to claim 2, characterized in that: Insert block 2 (602) is a sector block, and insert block 1 (601) is set to be a sector block that matches insert block 2 (602).

9. A negative pressure centrifugal concentrator with a detachable, residue-proof rotor according to claim 2, characterized in that: The internal threaded ring (603) is a ring nut, and the outer side of the internal threaded ring (603) is provided with knurled anti-slip texture.

10. A negative pressure centrifugal concentrator with a detachable, residue-proof rotor according to claim 1, characterized in that: The top of the negative pressure centrifugal concentrator body (1) is equipped with a cover plate, and elastic blocks are evenly arranged on the side of the cover plate near the negative pressure centrifugal concentrator body (1).

Images