Production equipment of nitrocellulose membrane

Abstract

The utility model relates to the technical field of nitrocellulose membrane processing, and discloses nitrocellulose membrane production equipment which comprises a kettle body, a supporting seat arranged on the outer surface of the kettle body, a placing seat arranged on the upper surface of a kettle cover, a driving motor arranged on the upper surface of the placing seat, and a rotating shaft arranged at the output end of the driving motor through a coupler, one end of the rotating shaft penetrates through the kettle cover and extends into the kettle body, stirring blades are mounted on the outer surface of the rotating shaft, a plurality of mounting grooves are formed in the inner wall of the kettle body, baffles are arranged in the mounting grooves, a groove is formed between every two adjacent mounting grooves, and a connecting assembly is arranged in each groove. According to the utility model, a welding fixing mode in the prior art is replaced by the arranged connecting assembly, so that the baffle plate with plastic deformation can be conveniently and quickly replaced, the risk of fatigue failure of a welding seam caused by alternating stress is avoided, the physical damage of cutting replacement to the kettle body structure is eliminated, and a better practical effect is achieved.

Description

Technical Field

[0001] This utility model relates to the field of nitrocellulose membrane processing technology, specifically to a nitrocellulose membrane production equipment. Background Technology

[0002] Nitrocellulose (NC) membranes were the first commercially available microporous membranes. They have a strong non-specific adsorption capacity for macromolecules such as proteins and nucleic acids, and are widely used in molecular hybridization, immunoblotting, cell culture, and medical diagnostics. The main production process of nitrocellulose membranes currently includes the following steps: preparing membrane slurry, roller laying, drying and shaping, and winding and slitting.

[0003] The invention patent application document with publication number "CN219744833U" discloses a nitrocellulose membrane slurry mixing tank, which is mainly composed of a tank body, a stirring paddle, a tank cover and baffles. This technical solution can make the discharged slurry uniform and free of air bubbles, which is conducive to the better implementation of subsequent processes.

[0004] The nitrocellulose membrane slurry mixing tank disclosed in the above document has the following defects: During the long-term operation of the nitrocellulose membrane slurry mixing tank, the rigid welded structure between the baffle and the inner tank wall will be continuously subjected to alternating fluid impact. The repeated action of this dynamic load will cause the baffle body to gradually accumulate metal fatigue, which will then lead to irreversible plastic deformation, eventually causing it to lose its flow guiding and anti-wall adhesion functions. At the same time, the welding fixing method makes the structure non-disassembleable, which means that the replacement of the baffle must rely on the complex process of cutting and re-welding. This not only greatly increases the maintenance time and cost, but also causes secondary damage to the integrity of the tank body during the repair process. Utility Model Content

[0005] The purpose of this invention is to provide a nitrocellulose membrane production equipment that solves the problem of the complex process of cutting and re-welding required for baffle replacement, which not only significantly increases maintenance time and cost, but also causes secondary damage to the integrity of the vessel body during the repair process.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a production equipment for nitrocellulose membranes, comprising a vessel body, a vessel lid mounted on the upper surface of the vessel body, a support base mounted on the outer surface of the vessel body, a placement seat mounted on the upper surface of the vessel lid, a drive motor mounted on the upper surface of the placement seat, and a rotating shaft mounted on the output end of the drive motor via a coupling. One end of the rotating shaft passes through the vessel lid and extends into the interior of the vessel body. A stirring blade is mounted on the outer surface of the rotating shaft. Several mounting grooves are formed on the inner wall of the vessel body, and baffles are provided inside the mounting grooves. A recess is formed between two adjacent mounting grooves, and a connecting component is provided inside the recess.

[0008] Furthermore, the connecting assembly includes sliders, both of which are located inside the groove and move along the groove axis. A spring is installed between the two sliders. A cover plate is installed on the upper surface of the groove. An opening is provided on the upper surface of the cover plate. A fixing block is provided at one end of each of the two sliders. One end of the fixing block penetrates the groove and extends into the interior of the mounting groove. An inclined surface is provided on the upper surface of the fixing block.

[0009] Furthermore, the baffle includes a mounting block, which is fitted inside the mounting groove. One end of the mounting block is provided with a guide fin, the outer surface of which is wavy. A fixing groove is formed on the outer surface of the mounting block, and the fixing block is fitted inside the fixing groove.

[0010] Furthermore, a positioning block is provided on the lower surface of the vessel lid, and the positioning block is fitted inside the opening.

[0011] Furthermore, a feed pipe is installed on the upper surface of the vessel lid, a discharge pipe is installed on the lower surface of the vessel body, and a control valve is installed on the outer surface of the discharge pipe.

[0012] Furthermore, a stirring paddle is installed at the lower end of the rotating shaft.

[0013] This utility model has the following beneficial effects:

[0014] (1) When disassembling this utility model, open the lid to disengage the positioning block from the cover plate opening, press the slider of the corresponding baffle inward to make it slide towards the center of the groove and compress the spring. The fixing block gradually disengages from the fixing groove of the baffle as the slider retracts. When the fixing block is completely removed, lift the baffle vertically upward to disengage the mounting block from the mounting groove to complete the disassembly. When installing, align the new baffle with the mounting groove and push it down. During the downward movement of the mounting block, the fixing block is forced to compress the spring by pressing the fixing block with the inclined surface. When the baffle is fully in place, the fixing groove and the fixing block are aligned. The spring rebounds and pushes the fixing block to accurately lock into the fixing groove to complete the self-locking. The connection component replaces the welding fixing method in the prior art, which facilitates the quick replacement of the plastically deformed baffle. It not only avoids the risk of weld fatigue failure caused by alternating stress, but also eliminates the physical damage to the vessel structure caused by cutting and replacement, and achieves a better practical effect.

[0015] (2) This utility model can eliminate the dead zone of laminar flow and wall deposition in the near wall area by using wave-shaped guide fins. At the same time, it can achieve deep mixing in the axial and radial directions with low shear stress, so that the nitrocellulose slurry can obtain the uniformity of traditional high-speed mixing under low-speed stirring.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of a partial structure of the present invention. Figure 1 ;

[0020] Figure 3 This is a schematic diagram of a partial structure of the present invention. Figure 2 ;

[0021] Figure 4 This is a schematic diagram of the vessel structure of this utility model;

[0022] Figure 5 This is a cross-sectional view of the vessel body structure of this utility model;

[0023] Figure 6 This utility model Figure 4 Enlarged schematic diagram of the structure at point A in the middle;

[0024] Figure 7 This is a schematic diagram of the baffle structure of this utility model;

[0025] The attached diagram lists the components represented by each number as follows:

[0026] In the diagram: 1. Kettle body; 101. Mounting groove; 102. Groove; 2. Kettle cover; 201. Positioning block; 3. Support base; 4. Placement base; 5. Drive motor; 6. Rotating shaft; 7. Stirring blade; 8. Baffle; 801. Mounting block; 802. Guide fin; 803. Fixing groove; 9. Connecting assembly; 901. Slider; 902. Spring; 903. Cover plate; 904. Fixing block; 10. Feed pipe; 11. Discharge pipe; 12. Stirring paddle. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-7 As shown, this utility model is a production equipment for nitrocellulose membrane, including a vessel body 1, a vessel cover 2 installed on the upper surface of the vessel body 1, a support base 3 installed on the outer surface of the vessel body 1, a placement seat 4 installed on the upper surface of the vessel cover 2, a drive motor 5 installed on the upper surface of the placement seat 4, a rotating shaft 6 installed at the output end of the drive motor 5 through a coupling, one end of the rotating shaft 6 passing through the vessel cover 2 and extending into the interior of the vessel body 1, a stirring blade 7 installed on the outer surface of the rotating shaft 6, a plurality of installation grooves 101 opened on the inner wall of the vessel body 1, a baffle 8 provided inside the installation grooves 101, a groove 102 opened between two adjacent installation grooves 101, and a connecting component 9 provided inside the groove 102;

[0029] The connection component 9 replaces the welding fixing method in the prior art, which facilitates the quick replacement of the plastically deformed baffle 8. This not only avoids the risk of weld fatigue failure caused by alternating stress, but also eliminates the physical damage to the structure of the vessel body 1 caused by cutting and replacement, thus achieving a better practical effect.

[0030] The connecting component 9 includes two sliders 901, both of which are located inside the groove 102 and move along the axis of the groove 102. A spring 902 is installed between the two sliders 901. A cover plate 903 is installed on the upper surface of the groove 102. An opening is provided on the upper surface of the cover plate 903. A fixing block 904 is provided at one end of each of the two sliders 901. One end of the fixing block 904 passes through the groove 102 and extends into the interior of the mounting groove 101. An inclined surface is provided on the upper surface of the fixing block 904.

[0031] The baffle 8 includes a mounting block 801, which is installed inside the mounting groove 101. One end of the mounting block 801 is provided with a guide fin 802, the outer surface of the guide fin 802 is wavy, and a fixing groove 803 is opened on the outer surface of the mounting block 801. A fixing block 904 is installed inside the fixing groove 803.

[0032] The wave-shaped guide fins 802 can eliminate laminar dead zones and wall deposits near the wall, while achieving deep mixing in the axial and radial directions with low shear stress, so that nitrocellulose slurry can achieve the uniformity of traditional high-speed mixing under low-speed stirring.

[0033] The lower surface of the lid 2 is provided with a positioning block 201, which is installed inside the opening.

[0034] A feed pipe 10 is installed on the upper surface of the lid 2, a discharge pipe 11 is installed on the lower surface of the body 1, and a control valve is installed on the outer surface of the discharge pipe 11.

[0035] A stirring paddle 12 is installed at the lower end of the rotating shaft 6.

[0036] In operation, nitrocellulose slurry is first added into the vessel 1 through the feed pipe 10. After addition, the drive motor 5 is turned on, causing its output end to drive the rotating shaft 6 to rotate via the coupling. This, in turn, causes the stirring blades 7 and the stirring paddle 12 to rotate, mixing the slurry. During this process, the corrugated guide fins 802 eliminate laminar flow dead zones and wall deposits near the wall, achieving deep mixing with low shear stress, allowing the slurry to achieve the uniformity of high-speed mixing at low speed. After mixing is complete, the drive motor 5 is turned off, and the control valve is opened to discharge the slurry through the discharge pipe 11.

[0037] When the baffle 8 is damaged and needs to be replaced, open the lid 2 to disengage the positioning block 201 from the opening of the lid 903, press the slider 901 inward to make it slide towards the center of the groove 102 and compress the spring 902, and the fixing block 904 will disengage from the fixing groove 803 of the baffle 8. After the fixing block 904 is completely removed, lift the baffle 8 vertically to disengage the mounting block 801 from the mounting groove 101, completing the removal of the old baffle 8. Then, align the mounting block 801 of the new baffle 8 with the mounting groove 101 and push it down. During the downward movement of the mounting block 801... By pressing the fixing block 904 with an inclined plane, the spring 902 is compressed. When the baffle 8 is fully in place, the fixing groove 803 is aligned with the fixing block 904. The spring 902 rebounds and pushes the fixing block 904 to accurately lock into the fixing groove 803 to complete self-locking. The connection component 9 replaces the welding fixing method in the prior art, which facilitates the quick replacement of the plastically deformed baffle 8. It not only avoids the risk of weld fatigue failure caused by alternating stress, but also eliminates the physical damage to the structure of the vessel body 1 caused by cutting and replacement, and achieves a better practical effect.

[0038] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A nitrocellulose membrane production apparatus, comprising a vessel body (1), a vessel lid (2) mounted on the upper surface of the vessel body (1), a support base (3) mounted on the outer surface of the vessel body (1), a placement seat (4) mounted on the upper surface of the vessel lid (2), a drive motor (5) mounted on the upper surface of the placement seat (4), a rotating shaft (6) mounted on the output end of the drive motor (5) via a coupling, one end of the rotating shaft (6) penetrating the vessel lid (2) and extending into the interior of the vessel body (1), and stirring blades (7) mounted on the outer surface of the rotating shaft (6), characterized in that: The inner wall of the vessel body (1) is provided with a plurality of mounting slots (101), and a baffle (8) is provided inside the mounting slot (101). A groove (102) is provided between two adjacent mounting slots (101), and a connecting component (9) is provided inside the groove (102).

2. The nitrocellulose membrane production equipment according to claim 1, characterized in that: The connecting component (9) includes sliders (901), both sliders (901) are located inside the groove (102) and move along the axis of the groove (102), a spring (902) is installed between the two sliders (901), a cover plate (903) is installed on the upper surface of the groove (102), the upper surface of the cover plate (903) has an opening, one end of each of the two sliders (901) is provided with a fixing block (904), one end of the fixing block (904) penetrates the groove (102) and extends into the interior of the mounting groove (101), the upper surface of the fixing block (904) has an inclined surface.

3. The nitrocellulose membrane production equipment according to claim 2, characterized in that: The baffle (8) includes a mounting block (801), which is installed inside the mounting groove (101). One end of the mounting block (801) is provided with a guide fin (802), the outer surface of which is wavy. A fixing groove (803) is opened on the outer surface of the mounting block (801), and the fixing block (904) is installed inside the fixing groove (803).

4. The nitrocellulose membrane production equipment according to claim 2, characterized in that: The lower surface of the lid (2) is provided with a positioning block (201), which is installed inside the opening.

5. The nitrocellulose membrane production equipment according to claim 1, characterized in that: The upper surface of the lid (2) is equipped with a feed pipe (10), the lower surface of the body (1) is equipped with a discharge pipe (11), and the outer surface of the discharge pipe (11) is equipped with a control valve.

6. The nitrocellulose membrane production equipment according to claim 1, characterized in that: A stirring paddle (12) is installed at the lower end of the rotating shaft (6).

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