Water permeable screw for dental floss hole

Abstract

This utility model belongs to the field of drainage structure parts for hot chambers, and discloses a permeable screw with threaded grooves and holes. It includes a head, a screw body, a special metal washer, and a drainage channel. Using a screwdriver and the head, the screw is screwed into the threaded opening of the hot chamber body. The screw threads engage with the threaded grooves of the hole for fixation, and the rounded tip avoids damage to the internal threads. During liquid discharge, the drainage channel forms a three-dimensional flow guiding network consisting of a through channel and drainage holes. Under pressure, the liquid rises and overflows along the through channel. The special metal washer is fitted onto the smooth rod section, and its drainage annular groove and water inlet form a planar flow guiding system. Changing the number of washer grooves allows for flow rate adjustment. This utility model has a compact and reasonable structural design, strong pressure and temperature resistance, and a simple structure. It is suitable for draining liquids from some general-purpose chemical experimental reactors, eliminating the need for expensive temperature and pressure resistant regulating valves, making it easy to use and with low maintenance costs.

Description

Technical Field

[0001] This utility model relates to the field of drainage structure parts for hot cavities, specifically a water-permeable screw with threaded wire holes. Background Technology

[0002] In chemical experiments and academic research, small reaction vessels, with their flexible operation and adaptability, have become core equipment for compound synthesis and property investigation, especially playing a crucial role in hot-cavity reaction systems. However, the presence of liquid substances during the reaction process often has a significant impact on experimental results, becoming an important factor restricting the improvement of reaction efficiency and product purity.

[0003] Taking organic synthesis reactions as an example, some reactions are prone to side reactions in a liquid environment, leading to a decrease in product purity. For instance, in the process of ethylbenzene dehydrogenation to styrene, liquid ethylbenzene is highly susceptible to cracking at high temperatures, generating tar-like substances that not only consume raw materials but also clog reaction pipelines, affecting equipment stability. Gas-phase reaction mechanisms can effectively avoid such side reactions, significantly improving the yield and purity of the target product. Furthermore, in some gas-phase polymerization reactions, liquid involvement may introduce impurities, affecting catalyst activity and product quality; gas-phase reactions can avoid these problems and improve product purity. For example, in the reaction of ethylene epoxidation to ethylene oxide, liquid impurities can permanently poison the silver catalyst.

[0004] Although gaseous reactions offer significant advantages, in practice, due to changes in reaction temperature and pressure (according to the ideal gas law PV=NRT), the vapor phase in the reaction system inevitably undergoes a phase transition, leading to the accumulation of liquid substances within the hot chamber. To maintain reaction stability and product purity, the liquid substances must be drained promptly. Currently, most experimental small-scale reactors, to accommodate various experimental needs, generally adopt a simple liquid discharge structure, i.e., a drain pipe is installed at the bottom of the reactor, and the liquid discharge rate and start / stop are controlled by adjustable valves. However, this traditional technical solution has significant drawbacks: in complex experimental environments with high temperature and high pressure, adjustable valves are prone to sealing failure and mechanical wear, leading to increased leakage risks, requiring frequent valve maintenance and replacement, cumbersome maintenance operations, and expensive temperature- and pressure-resistant adjustable valves, resulting in high equipment maintenance costs. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a permeable screw with a threaded hole, thereby solving the problem of high maintenance costs of existing small experimental reactors mentioned in the background art.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a water-permeable screw with threaded thread holes, comprising:

[0007] The platform head is a screw head, and the platform head is a frustum structure with a round head.

[0008] A drive port is provided on the platform head, and the drive port is one of the following shapes: cross-shaped, plum blossom-shaped, and straight-line-shaped.

[0009] The screw body is located on the side of the stage head opposite to the drive port;

[0010] A round, round tip is located at the end of the screw body that is away from the platform head;

[0011] A specially designed metal washer is fitted onto the screw body;

[0012] A drainage channel is provided on the screw body to realize the function of draining liquid;

[0013] A drainage groove is provided on the main structure at the corresponding screw thread.

[0014] Preferably, a smooth rod section is provided on the side of the screw body near the stage head.

[0015] Preferably, the screw body is provided with spiraling threaded teeth.

[0016] Preferably, the drainage channel includes multiple sets of through channels and multiple sets of drainage holes, the screw body has multiple sets of coaxial through channels on its edge, and the spiral thread has drainage holes corresponding to the through channels.

[0017] Preferably, the multiple sets of through channels are arranged in a circumferentially symmetrical distribution.

[0018] Preferably, the special metal washer is a perforated circular plate structure, the inner diameter of the special metal washer is larger than the diameter of the screw body, and the outer diameter of the special metal washer is smaller than the diameter of the platform.

[0019] Preferably, the specially made metal gasket has multiple sets of through-type drainage ring grooves, and a drainage outlet is provided on the outer side of the drainage ring groove, which connects the drainage ring groove to the outside.

[0020] Preferably, the drainage groove is circular, and the diameter of the drainage groove is smaller than the outer diameter of the special metal gasket. One end of the special metal gasket abuts against the outer structure of the drainage groove, and the other end of the special metal gasket abuts against the top of the platform.

[0021] Compared with the prior art, this utility model provides a water-permeable screw with threaded wire holes, which has the following beneficial effects:

[0022] 1. This threaded, perforated, water-permeable screw features a platform head, screw body, special metal washer, and drainage channel. A screw hole and drainage groove are provided on the hot chamber wall, enabling adjustable liquid discharge within the hot chamber. It boasts strong pressure and temperature resistance, a simple structure, and is suitable for draining liquids from general-purpose chemical experimental reactors. It eliminates the need for expensive temperature and pressure regulating valves, making it easy to use and cost-effective to maintain.

[0023] 2. A drainage channel is provided to drain the liquid in the hot chamber, which can prevent the liquid phase in the hot chamber from affecting the chemical reaction.

[0024] 3. Multiple sets of specially designed metal gaskets are provided. The number of drainage ring grooves on these gaskets allows for adjustment of the discharge volume. When a large discharge is required, a gasket with multiple drainage ring grooves can be used; when a small discharge is required, a gasket with one drainage ring groove can be used; and when no discharge is needed, a regular gasket can be used. This allows for switching between various modes, and the reactor using this device is still suitable for a variety of different experiments. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the overall structure of the present invention and the drainage groove;

[0027] Figure 3 This is a schematic diagram of the drive port structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the specially made metal gasket structure of this utility model.

[0029] In the diagram: 1. Headstock; 2. Drive port; 3. Screw body; 4. Polished rod section; 5. Coiled thread; 6. Round tip; 7. Special metal gasket; 8. Drainage channel; 9. Drainage mating groove; 10. Through channel; 11. Drainage relief hole; 12. Drainage ring groove; 13. Drainage outlet. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0031] Please see Figure 1-4 This utility model provides a technical solution:

[0032] A water-permeable screw with threaded hole, comprising:

[0033] Table head 1 is a screw head with a frustum-shaped structure resembling a round head. Table head 1 uses a regular round head for dome cutting, which provides a certain degree of anti-scratch function compared to a regular pan head, and can shorten the length of the exposed part.

[0034] Drive port 2 is located on the headstock 1. Drive port 2 is one of the following shapes: cross-shaped, star-shaped, or flat-head. Drive port 2 is a screwdriver mating port, which facilitates the use of screwdrivers to tighten and loosen screws.

[0035] Screw body 3, the screw body 3 is located on the side of the stage head 1 away from the drive port 2;

[0036] The round tip 6 is located at the end of the screw body 3 away from the stage head 1; prism-shaped tips, self-tapping tips, etc., must not be used, and smooth tips must be used to avoid damaging the internal tooth grooves on the hot cavity structure during operation.

[0037] Special metal washer 7 is fitted onto screw body 3;

[0038] Drainage channel 8 is provided on screw body 3 to realize the function of draining liquid;

[0039] The drain groove 9 is located on the main structure at the corresponding screw thread. Compared with existing adjustable valves, this device has a simple structure and low cost, but it cannot be adjusted during operation. For most compound experiments, controlling the pressure balance can effectively improve the quality of the reaction products. This invention cannot be dynamically adjusted during operation, which has no impact on the experiment. When using it, it is necessary to calculate the pressure balance based on thermodynamics and physicochemical principles to determine the discharge volume under stable pressure balance. Software such as MATLAB can be used to assist in calculating the pressure balance.

[0040] Furthermore, a smooth section 4 is provided on the side of the screw body 3 near the head 1. The smooth section 4 has no coiled threads and serves as a placement area for a special metal washer 7.

[0041] Furthermore, the screw body 3 is provided with a spiraling thread 5.

[0042] Furthermore, the drainage channel 8 includes multiple sets of through channels 10 and multiple sets of drainage holes 11. Multiple sets of coaxial through channels 10 are opened on the edge of the screw body 3, and drainage holes 11 corresponding to the through channels 10 are opened on the spiral thread 5. The through channels 10 stop at the polished rod section 4.

[0043] Furthermore, the multiple through channels 10 are distributed symmetrically around the circumference.

[0044] Furthermore, the special metal washer 7 is a perforated circular plate structure. The inner diameter of the special metal washer 7 is larger than the diameter of the screw body 3, and the outer diameter of the special metal washer 7 is smaller than the diameter of the platform 1.

[0045] Furthermore, the specially designed metal gasket 7 has multiple sets of through-type drainage annular grooves 12, and drainage outlets 13 are provided on the outer side of the drainage annular grooves 12, connecting the drainage annular grooves 12 to the outside. Multiple sets of specially designed metal gaskets 7 can be provided, each set differing in the number of drainage annular grooves 12. If only one set of drainage annular grooves 12 is provided, the discharge flow rate is significantly reduced compared to multiple sets of drainage annular grooves 12. If an ordinary gasket is used, there are no drainage annular grooves 12, and the corresponding liquid discharge channel is completely blocked, thus achieving different flow rate adjustments.

[0046] Furthermore, the drain groove 9 is circular, and its diameter is smaller than the outer diameter of the special metal washer 7. One end of the special metal washer 7 abuts against the outer structure of the drain groove 9, and the other end abuts against the head 1. When using this screw, the special metal washer 7 is fitted onto the corresponding smooth section 4 on the screw body 3. The spiral threaded screw 5 is screwed into the threaded groove of the corresponding structure's screw hole. At this time, the internal liquid flows along the through channel 10 to the drain groove 9, and the liquid enters the drain ring groove 12 and is discharged to the outside along the drain outlet 13. It should be noted that some compound liquids are at risk of leakage, and a collection container should be set up to avoid leakage and pollution. There are no restrictions on the method of preventing leakage and pollution; any method commonly used by those skilled in the art can be used. Multi-stage isolation is recommended.

[0047] Structural Description:

[0048] Platform 1: The screw head is a frustum structure similar to a round head. It is machined with a round head using ordinary round head cutting, which has the function of preventing scratches on the round head and can shorten the length of the exposed part;

[0049] Drive port 2: Located on the headstock 1, it is one of the following shapes: cross-shaped, star-shaped, or flat-head. It is a screwdriver mating port to facilitate the tightening and loosening of screws.

[0050] Screw body 3: Located on the side of the head 1 away from the drive port 2, with a smooth section 4 without coiled teeth on the side near the head 1, which serves as a placement area for the special metal gasket 7.

[0051] Polished section 4: Located on the side of the screw body 3 near the head 1, without coiled threads, used to place a special metal washer 7;

[0052] Coiled thread 5: Set on the screw body 3, it tightly meshes with the thread groove of the screw hole to form a preliminary fixed connection;

[0053] Round tip 6: Located at the end of the screw body 3 away from the head 1, it is smooth and without edges to avoid damage to the internal teeth when screwing in, ensuring the integrity and sealing of the equipment;

[0054] Special metal gasket 7: It is fitted on the smooth rod section 4 of the screw body 3. It is a circular plate structure with holes. Its inner diameter is larger than the diameter of the screw body 3 and its outer diameter is smaller than the diameter of the platform 1. Multiple sets of through-type drain ring grooves 12 are opened on it, and there is a drain outlet 13 on the outside. The flow rate can be adjusted by replacing the gasket with different numbers of drain ring grooves 12.

[0055] Drainage channel 8: Located on the screw body 3, it includes multiple sets of circumferentially distributed through channels 10 and multiple sets of drainage holes 11, forming a three-dimensional flow guiding network to realize the function of draining liquid.

[0056] Drainage groove 9: Located on the main structure at the corresponding screw thread, it is a circular groove with a diameter smaller than the outer diameter of the special metal gasket 7. Together with the special metal gasket 7, it forms a dual guarantee of sealing and guiding, preventing liquid leakage and guiding liquid into the drainage ring groove 12.

[0057] Through channel 10: Located at the edge of the screw body 3, multiple sets are coaxially and symmetrically distributed around the circumference, penetrating the interior of the screw along the axial direction, serving as the longitudinal main channel for liquid transmission, and stopping at the smooth rod section 4;

[0058] Drainage hole 11: It is opened on the spiral thread 5, corresponding to the through channel 10, and together with the through channel 10, it forms the drainage channel 8;

[0059] Drainage ring groove 12: It is formed on the special metal gasket 7, with multiple through-type grooves and multiple symmetrically distributed in a circle. Together with the drain outlet 13, it forms a planar flow guiding system to collect liquid and guide it to the drain outlet 13.

[0060] Drain outlet 13: Located outside the drainage ring groove 12, it connects the drainage ring groove 12 with the outside world and is the final outlet for liquid.

[0061] Working Principle: First, a screwdriver is used to engage with the drive port 2 on the headstock 1 to screw the screw into the corresponding threaded hole of the main body. The spiral thread 5 on the screw body 3 tightly meshes with the threaded groove of the screw hole, forming a preliminary fixed connection. The round tip 6, with its smooth and edgeless structure, avoids damage to the internal threaded groove during screwing, ensuring the integrity and sealing of the equipment. The liquid discharge process uses the drain channel 8 as the core path. The drain channel 8 consists of a three-dimensional flow guiding network composed of through channels 10 and drain holes 11: multiple sets of through channels 10 are symmetrically distributed around the edge of the screw body 3, penetrating the interior of the screw axially, serving as the longitudinal main channel for liquid transmission; when the liquid pressure in the hot cavity reaches a set threshold, the liquid substance rises vertically along the through channels 10 under pressure and overflows laterally to the outside of the screw. The specially made metal gasket 7 plays a key role in flow control. Its perforated circular structure is fitted onto the smooth rod section 4, forming a replaceable flow control module. The drain ring grooves 12 and drain outlets 13 on the gasket form a planar flow guiding system: the drain ring grooves 12 are distributed in concentric circles, and the outer drain outlets 13 serve as the final outlet for the liquid. When the liquid flows out through the drain channel 8, it preferentially converges into the drain ring grooves 12 of the special metal gasket 7, and then is directionally discharged to the external collection device through the drain outlets 13. Users can adjust the flow rate by replacing the special metal gaskets 7 with different numbers of drain ring grooves 12 according to experimental needs: a single set of drain ring grooves 12 restricts the liquid flow path, resulting in a small flow rate discharge; multiple sets of drain ring grooves 12 significantly increase the liquid flow rate through parallel channels, meeting the needs of large flow rate discharge; if ordinary gaskets without drain ring grooves 12 are used, the liquid channel is completely sealed, achieving a zero discharge state. The drain matching groove 9 and the special metal gasket 7 together provide a dual guarantee of sealing and flow guidance. The circular, groove-shaped drain groove 9 precisely matches the outer diameter of the specially designed metal gasket 7. During installation, one end of the gasket 7 presses firmly against the outer structure of the drain groove 9, while the other end fits tightly against the headstock 1. Under the tightening torque of the screw, a sealing pressure is formed, preventing liquid leakage from the edge of the gasket. Simultaneously, the drain groove 9 serves as a transition area for lateral liquid flow, guiding liquid from the screw body 3 smoothly into the drain ring groove 12 of the specially designed metal gasket 7, ensuring a smooth discharge path. Throughout the entire operation, this screw integrates the functions of liquid collection, transmission, regulation, and discharge through a modular structural design. It can achieve precise control of liquid discharge under stable pressure conditions, meeting the stringent requirements of gas-liquid balance in various chemical experiments.

[0062] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water-permeable screw with a threaded hole, characterized in that, include: Platform head (1), the platform head (1) is a screw head, the platform head (1) is a frustum structure with a round head; Drive port (2), the drive port (2) is provided on the platform (1), and the drive port (2) is one of cross shape, plum blossom shape, and straight shape; The screw body (3) is located on the side of the stage (1) away from the drive port (2); A round tip (6) is provided at one end of the screw body (3) away from the platform (1); A special metal washer (7) is fitted onto the screw body (3); Drainage channel (8), the drainage channel (8) is provided on the screw body (3) to realize the function of draining liquid; Drainage groove (9) is provided on the main structure at the corresponding screw thread.

2. The water-permeable screw with threaded hole according to claim 1, characterized in that, The screw body (3) has a smooth rod section (4) on the side near the head (1).

3. A water-permeable screw with a threaded hole according to claim 1, characterized in that, The screw body (3) is provided with a spiraling toothed wire (5).

4. A water-permeable screw with a threaded hole according to claim 3, characterized in that, The drain channel (8) includes multiple sets of through channels (10) and multiple sets of drain holes (11). Multiple sets of coaxial through channels (10) are opened on the edge of the screw body (3). The spiral thread (5) is provided with drain holes (11) corresponding to the through channels (10).

5. A water-permeable screw with a threaded hole according to claim 4, characterized in that, The multiple sets of through channels (10) are distributed in a circumferentially symmetrical manner.

6. A water-permeable screw with a threaded hole according to claim 1, characterized in that, The special metal gasket (7) is a perforated circular plate structure. The inner diameter of the special metal gasket (7) is larger than the diameter of the screw body (3), and the outer diameter of the special metal gasket (7) is smaller than the diameter of the platform (1).

7. A water-permeable screw with a threaded wire hole according to claim 6, characterized in that, The special metal gasket (7) has multiple sets of through-type drainage ring grooves (12), and a drainage outlet (13) is provided on the outside of the drainage ring groove (12), which connects the drainage ring groove (12) to the outside.

8. A water-permeable screw with a threaded wire hole according to claim 6, characterized in that, The drainage groove (9) is circular. The diameter of the drainage groove (9) is smaller than the outer diameter of the special metal gasket (7). One end of the special metal gasket (7) abuts against the outer structure of the drainage groove (9), and the other end of the special metal gasket (7) abuts against the headboard (1).

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