A dustproof purification device for on-site production of cable hot-melt joint

Abstract

The utility model discloses a dustproof purification device for cable hot melt joint field production, including by the clean room that constitutes of the horizontal cylindrical frame body and install transparent canopy of frame body surface, and the opening of the transparent canopy of clean room front side or back side is provided with the opening of the work personnel's in and out, and the opening can open or close, the transparent canopy of clean room side surface is provided with a plurality of air vents, and the dustproof filter screen is installed to every air vent, and the both sides of clean room lower part are provided with the sliding slot, and the frame body is fixed on the sliding slot upper part, and the bottom plate that can support the work personnel is movably embedded between the sliding slot, and the bottom plate seals clean room lower part, and the portable vacuum pump is installed to one side of clean room. The utility model makes the field production process of cable hot melt joint not be affected by the dust that floats and scatters in the air, guarantees the field production quality of cable hot melt joint, and provides the relatively comfortable environment for the work personnel, improves the field production efficiency, and is convenient to install and disassemble.

Description

Technical Field

[0001] This utility model relates to the field of cable fusion joint manufacturing technology, specifically to a dustproof and purification device for on-site manufacturing of cable fusion joints. Background Technology

[0002] Cable heat fusion splicing technology is a new power cable connection technology. Its technical principle is based on cable design and the same extrusion and cross-linking processes. The cable conductor, inner semiconductive layer, main insulation, and outer semiconductive layer at the weld joint are all manufactured according to the original cable structure and specifications, making the joint a complete, seamless cable – the biggest difference from traditional cable joints.

[0003] Cable heat fusion splicing is generally carried out outdoors, resulting in a relatively harsh working environment. Although cable heat fusion splicing technology does not require a completely clean working environment, the presence of dust or other impurities during the melting process of the conductor metal, or the subsequent wrapping of semi-conductive tape, semi-conductive cloth, or insulation tape, can have extremely adverse effects on the cable fusion splice. These effects include: ① Poor contact: Dust or impurities adhering to the conductor surface hinder direct contact between metals, leading to increased contact resistance. Increased resistance can cause abnormal heating at the joint (Joule heating effect), potentially causing insulation aging or even fire. Impurities (such as moisture or salt) can accelerate the oxidation of the metal conductor, further deteriorating conductivity; ② Decreased insulation performance: Impurity particles can disrupt the uniformity of the insulation layer, causing partial discharge under high voltage and gradually breaking down the insulation. Conductive impurities (such as metal debris) can directly bridge the conductor and shielding layer, causing short-circuit faults; ③ Damage to sealing: Dust absorbing moisture can reduce the sealing performance of the outer sheath, leading to internal dampness and accelerating metal corrosion and insulation deterioration. In conclusion, it is essential to provide a clean environment for the on-site fabrication of cable heat fusion joints to ensure that the fabricated cable heat fusion joints have good quality and meet the usage requirements. Utility Model Content

[0004] The purpose of this invention is to provide a dustproof and purification device that is easy to use and can provide a relatively clean working environment for the on-site fabrication of cable heat fusion joints.

[0005] This utility model is achieved through the following technical solution: a dustproof and purification device for on-site fabrication of cable hot-melt joints, comprising a symmetrically arranged arched frame and a fully enclosed transparent tarpaulin. The transparent tarpaulin completely covers the outer perimeter of the frame and is fixedly connected to the frame to form a closed working space. The transparent tarpaulin on the front and rear sides of the working space is provided with openable openings. The transparent tarpaulin on the circumferential sides is provided with several ventilation holes, each of which is equipped with a dustproof filter. The lower part of the working space is provided with inward-facing sliding grooves on both sides. The two ends of the two frames are fixed to the upper part of the sliding grooves on both sides. A base plate for supporting the operator is movably embedded between the sliding grooves. The base plate seals the lower part of the working space. A portable vacuum pump is installed outside the working space to continuously extract air from the working space.

[0006] The working principle of this technical solution is as follows: a physical barrier is constructed using an arched frame and a fully enclosed transparent tarpaulin to prevent external dust from directly intruding into the work area enclosed by the transparent tarpaulin and the base plate; simultaneously, a portable vacuum pump continuously extracts air from the work space, creating a slightly negative pressure environment. At this point, external air can only enter through vents equipped with dust filters, and dust is intercepted by the filters, thus maintaining the cleanliness of the work space and meeting the core requirement of a dust-free environment for cable heat fusion joint fabrication.

[0007] To better realize this utility model, the base plate is further provided with a cavity inside, and the upper part of the base plate is provided with a dot-matrix distributed through hole communicating with the cavity; the front part of the base plate is provided with a strip-shaped interface, and the rear part is provided with a protrusion that matches the strip-shaped interface, the opening of the protrusion communicating with the cavity inside the base plate; adjacent base plates are connected by fitting the protrusion and the strip-shaped interface, and the cavities of the adjacent base plates are interconnected after fitting; the protrusion at the rear of the foremost base plate is connected to the air extraction pipe of the vacuum pump, and the vacuum pump draws air from the working space through the through hole at the upper part of the base plate.

[0008] To better realize this utility model, the bottom plate is further provided with sliders that match the slide groove on both the left and right sides, and the sliders are slidably connected to the slide groove.

[0009] To better realize this utility model, an elastic sealing gasket is further provided in the slide groove. When the base plate is embedded in the slide groove, the sliders on both sides of the base plate are tightly fitted with the elastic sealing gasket.

[0010] To better realize this utility model, the upper surface of the base plate is further provided with upwardly raised anti-slip texture.

[0011] To better realize this utility model, furthermore, a number of auxiliary supports are provided between the two symmetrical frames at the front and rear. The auxiliary supports have the same shape as the frames and their two ends are respectively fixed to the sliding grooves on both sides of the lower part.

[0012] To better realize this utility model, the transparent tarpaulin is further fixed to the frame and auxiliary support by a number of Velcro straps or cable ties, which are distributed at intervals along the edges of the frame and auxiliary support.

[0013] To better realize this utility model, a zipper is further fixedly installed on the edge of the opening, and the length of the zipper covers the circumferential edge of the opening.

[0014] To better realize this utility model, the frame is made of stainless steel and the transparent tarpaulin is made of polyvinyl chloride coated fabric.

[0015] Compared with the prior art, this utility model has the following advantages and beneficial effects: (1) This utility model ensures that the on-site fabrication of cable heat fusion joints is not affected by floating and scattered dust in the air, thus avoiding poor contact, reduced insulation performance, and damaged sealing of the on-site fabricated cable heat fusion joints due to dust or impurities, and ensuring the quality of on-site fabrication of cable heat fusion joints. (2) This utility model can provide a relatively comfortable environment for the workers who perform cable heat fusion joints, avoid adverse interference from the external environment, and improve the on-site production efficiency of cable heat fusion joints. (3) This utility model has a simple structure and is easy to use. It can be easily installed and disassembled even in relatively small spaces, providing a suitable working environment for the on-site fabrication of cable heat fusion joints. It is suitable for widespread application. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the bottom plate of this utility model; Figure 3 This is a schematic diagram of the planar structure of the bottom plate in this utility model.

[0017] Among them: 1—frame, 2—transparent tarpaulin, 3—opening, 4—vent, 5—slide groove, 6—base plate, 61—through hole, 62—strip interface, 63—protrusion, 64—slider, 65—anti-slip texture, 7—vacuum pump, 8—auxiliary support. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example 1:

[0021] The main structure of this embodiment is as follows: Figure 1 As shown, the work includes a symmetrically arranged arched frame 1 and a fully enclosed transparent tarpaulin 2. The transparent tarpaulin 2 completely covers the outer perimeter of the frame 1 and is fixedly connected to the frame to form a closed working space. The transparent tarpaulin 2 on the front and rear sides of the working space is provided with an openable opening 3. The transparent tarpaulin 2 on the circumferential side is provided with several ventilation holes 4, and each ventilation hole 4 is equipped with a dust filter. The lower part of the working space is provided with inward-facing sliding grooves 5. The two ends of the two frames 1 are fixed to the upper part of the sliding grooves 5 on both sides. A base plate 6 for supporting the workers is movably embedded between the sliding grooves 5. The base plate 6 seals the lower part of the working space. A portable vacuum pump 7 is installed outside the working space to continuously extract air from the working space.

[0022] The specific usage process is as follows: Preliminary preparation: Clean the work site ground to ensure there are no sharp objects. Determine the installation spacing of the chutes 5 based on the required space dimensions for the cable heat fusion joint fabrication. Fix the chutes 5 parallel to the ground with their inward-facing openings using expansion bolts or ground anchors. Since this dustproof and purification device is installed above the cable, the lower part of the device is a trench excavated for cable laying, and the chutes 5 are installed on both sides of the trench. Align the two ends of the symmetrically arranged arched frame 1 with the fixing holes on the upper part of the chutes 5 on both sides, and tighten them with bolts to make the frame 1 perpendicular to the chutes 5. Maintain a distance of 1.5~2m between the two frame 1s to form a basic support frame. Completely cover the outer perimeter of the two frame 1s with a fully enclosed transparent tarpaulin 2, and secure it to the frame 1 using pre-set buckles or ropes along the edges of the tarpaulin, ensuring the tarpaulin 2 is taut and wrinkle-free, with its sides flush with the ground, thus initially forming a closed working space. Ventilation vents 4 are installed at preset positions on the transparent tarpaulin 2 along the perimeter of the work space. Each ventilation vent 4 contains a dust filter, ensuring a tight, gapless fit between the filter and the edge of the vent 4. A portable vacuum pump 7 is placed on a flat surface outside the work space, powered on, and tested to ensure its pumping function is normal. The base plate 6, used to support the workers, is inserted inwards along the groove of the slide 5. The position of the base plate 6 is adjusted to the center of the work area, ensuring it completely covers the gaps between the slide 5, sealing the lower part of the work space and preventing dust from entering from the bottom. Workers enter through the openable opening 3 of the transparent tarpaulin 2 on the front or rear side of the work space, placing their cable heat fusion equipment on the base plate 6. After closing the opening 3, the portable vacuum pump 7 is started to continuously extract air from the work space. After running for 5 minutes, the cable heat fusion joint fabrication work begins.

[0023] After the joint is made, keep the vacuum pump 7 running for 3 minutes to expel the small amount of waste gas generated by the heat melting in the work space; turn off the vacuum pump 7, and the workers exit through the opening 3, disassemble the fixed connection between the transparent tarpaulin 2 and the frame 1, and remove the tarpaulin 2, frame 1, base plate 6 and slide 5 in sequence to complete the site cleanup. Example 2:

[0024] This embodiment, based on the above embodiments, further defines the structure of the base plate 6, such as... Figure 2 , Figure 3As shown, the base plate 6 has an internal cavity, and the upper part of the base plate 6 has a dot-matrix distributed through holes 61 communicating with the cavity; the front part of the base plate 6 has a strip-shaped interface 62, and the rear part has a protrusion 63 that matches the strip-shaped interface 62. The opening of the protrusion 63 communicates with the internal cavity of the base plate 6; adjacent base plates 6 are connected by the protrusion 63 and the strip-shaped interface 62, and the cavities of adjacent base plates 6 are interconnected after the connection; the protrusion 63 at the rear of the foremost base plate 6 is connected to the suction pipe of the vacuum pump 7, and the vacuum pump 7 draws air from the working space through the through holes 61 on the upper part of the base plate 6. Through the cavity structure and dotted through holes 61 inside the base plate 6, the suction force of the portable vacuum pump 7 is evenly transmitted to various areas of the working space, avoiding dust suspension caused by insufficient local negative pressure; at the same time, through the interlocking connection of the strip interface 62 and the protrusion 63, the cavities of multiple base plates 6 are connected, so that the air extraction channel forms a whole, ensuring that the negative pressure coverage range can be flexibly expanded with the length of the working space, solving the problem of limited suction range of a single base plate.

[0025] The specific implementation process is as follows: according to the length requirements of the working space, prepare several base plates 6 with cavities. The length of each base plate 6 is set to 1m. Ensure that adjacent base plates 6 can be fitted with protrusions 63 through strip interfaces 62. Check that the dot matrix distribution through holes 61 on the upper part of each base plate 6 are not blocked and that the opening of the protrusion 63 is smoothly connected to the internal cavity.

[0026] Insert the first base plate 6 into the front end of the work area along the slide groove 5, then align the protrusion 63 of the second base plate 6 with the strip interface 62 of the first base plate 6, and push the base plate 6 along the slide groove 5 to fit the two together, ensuring that the cavities of the adjacent base plates 6 are interconnected; repeat the splicing steps according to the length of the work space until the base plate 6 completely covers the work area.

[0027] Connect the air extraction tube of the portable vacuum pump 7 to the protrusion 63 at the rear of the frontmost base plate 6 via a quick-connect connector. Wrap the connection with sealing tape to ensure that the air passage is sealed and leak-free. Start the vacuum pump 7 to perform an air extraction test. Place your hand close to the through hole 61 on the upper part of the base plate 6 to feel the uniform suction force and confirm that all through holes 61 are drawing air normally and there are no obvious dead air zones.

[0028] The installation, operation, and finishing process of the frame 1, transparent tarpaulin 2, ventilation port 4, and opening 3 are the same as those in the above embodiment and will not be repeated here. Example 3:

[0029] This embodiment, based on the above embodiments, further defines the structure of the base plate 6, such as... Figure 2 , Figure 3As shown, the base plate 6 has sliders 64 on both its left and right sides that match the sliding grooves 5, and the sliders 64 are slidably connected to the sliding grooves 5. By setting sliders 64 on both sides of the base plate 6 that match the sliding grooves 5, the base plate 6 and the sliding grooves 5 form a precise sliding pair. This reduces frictional resistance during the installation and adjustment of the base plate 6, facilitating quick operation by a single person. Furthermore, the guide of the sliders 64 and the sliding grooves 5 ensures accurate positioning of the base plate 6 after installation, avoiding sealing gaps caused by misalignment and further improving the sealing of the workspace.

[0030] The specific implementation process is as follows: Check that the dimensions of the sliders 64 on both sides of the base plate 6 match the width of the groove 5, and that the surface of the sliders 64 is smooth and burr-free to ensure smooth sliding. Align the sliders 64 on both sides of the base plate 6 with the openings of the grooves 5 on both sides, and slowly push them in along the length of the groove 5, ensuring that the sliders 64 are fully embedded in the groove 5 without any jamming during the pushing process; adjust the front and back position of the base plate 6 along the groove 5 according to the operation requirements until it is in the optimal operation area.

[0031] After adjustment, gently push the base plate 6 to check its stability and ensure there is no loosening or displacement; confirm that there is no obvious gap at the contact point between the base plate 6 and the slide groove 5 to ensure a good seal at the bottom of the working space. The remaining implementation steps are the same as in the above embodiment and will not be repeated. Example 4:

[0032] This embodiment, based on the above embodiments, further defines the structure of the slide groove 5, such as... Figure 1 As shown, an elastic sealing gasket is also provided inside the slide groove 5. When the base plate 6 is embedded in the slide groove 5, the sliders 64 on both sides of the base plate 6 fit tightly with the elastic sealing gasket. The material of the elastic sealing gasket in the slide groove 5 is preferably EPDM with a compression deformation rate of ≤20%. When the sliders 64 of the base plate 6 are embedded in the slide groove 5, the elastic sealing gasket is compressed by the sliders 64 and undergoes elastic deformation, filling the tiny gap between the sliders 64 and the slide groove 5, forming a surface-to-surface sealing structure. This completely prevents external dust from entering the working space from the mating area between the base plate 6 and the slide groove 5, solving the sealing hazards caused by the sliding fit.

[0033] The specific implementation process is as follows: cut an elastic sealing gasket with the same length as the slide groove 5 and set the thickness to 3mm. Then, stick the sealing gasket to the inner wall of the slide groove 5 with adhesive backing. When sticking, ensure that the sealing gasket is flat and wrinkle-free. Use an overlapping method at the joint to avoid sealing breaks.

[0034] Align the slider 64 of the base plate 6 with the groove 5 and slowly push it in. During the process, feel the squeezing resistance of the elastic sealing gasket to ensure that the slider 64 and the sealing gasket are fully in contact and there is no local suspension. After pushing to the target position, gently press the sides of the base plate 6 to fully deform the sealing gasket and enhance the sealing effect.

[0035] Close the opening 3 of the working space, start the portable vacuum pump 7 to create negative pressure in the space, and place a paper towel close to the connection between the base plate 6 and the slide 5. Observe that there is no adhesion of the paper towel, confirming that the seal is qualified. If there is a leak, adjust the position of the base plate 6 or re-attach the elastic sealing gasket. The remaining implementation steps are the same as those in the above embodiment, and will not be repeated. Example 5:

[0036] This embodiment, based on the above embodiments, further defines the structure of the base plate 6, such as... Figure 3 As shown, the upper surface of the base plate 6 is also provided with upwardly raised anti-slip texture 65.

[0037] An upward-protruding anti-slip texture 65 is provided on the upper surface of the base plate 6. By increasing the roughness of the surface of the base plate 6, the static friction coefficient between the worker's shoe sole and the base plate 6 is increased to ≥0.6. Even if a small amount of oil or dust is generated on the surface of the base plate 6 due to operation, it can effectively prevent the worker from slipping and ensure on-site operation safety.

[0038] The specific implementation process is as follows: A base plate 6 with a grid-like anti-slip texture 65 on its upper surface is selected. The raised height of the anti-slip texture 65 is set to 2mm, and the grid spacing is 20mm, ensuring anti-slip effect without affecting the placement of the work equipment. The anti-slip texture 65 is checked for damage and sharp edges to avoid scratching the soles of workers' shoes or the equipment. The base plate 6 is installed, ensuring that the anti-slip texture 65 on the upper surface of the base plate 6 faces upwards, and that the anti-slip texture 65 of adjacent base plates 6 is continuously aligned without significant height differences. Before workers enter, debris on the upper surface of the base plate 6 is cleared to ensure that the anti-slip texture 65 is not blocked. Workers wear anti-slip shoe covers and perform simulated operations such as walking and turning on the base plate 6 to confirm that there is no slippage before proceeding with the cable heat fusion joint fabrication work. The remaining implementation steps are the same as in the above embodiment and will not be repeated. Example 6:

[0039] This embodiment, based on the above embodiment, further adds an auxiliary support 8 structure, such as... Figure 1 As shown, several auxiliary supports 8 are also provided between the two symmetrical frame bodies 1. The auxiliary supports 8 have the same shape as the frame bodies 1 and their ends are fixed to the sliding grooves 5 on both sides of the lower part. By adding several auxiliary supports 8 with the same shape as the frame bodies 1 between the two arched frame bodies 1, a multi-span arched support structure is formed between the auxiliary supports 8 and the main frame body 1. This disperses the tension of the transparent tarpaulin 2 and the external wind load, prevents the frame body 1 from deforming due to its large span, and prevents the middle part of the tarpaulin 2 from sagging. This ensures the integrity and stability of the working space and is suitable for larger-sized working scenarios.

[0040] The specific implementation process is as follows: determine the number of auxiliary supports 8 according to the length of the working space. Usually, one auxiliary support 8 is added every 1.5m to ensure uniform support spacing. Check that the material and size of the auxiliary support 8 are consistent with the main frame 1, and that the positions of the fixing holes at both ends match the sliding groove 5.

[0041] Align the two ends of the auxiliary support 8 with the pre-set fixing holes on the upper part of the side slide grooves 5, and place it parallel to the main frame 1. Secure the two ends of the auxiliary support 8 to the slide grooves 5 with bolts, ensuring that the arch height of the auxiliary support 8 is consistent with that of the main frame 1, forming a flat support surface. After installation, press the middle of the auxiliary support 8 by hand to check for any obvious deformation; confirm that the tops of all frames 1 and auxiliary support 8 are on the same arc, providing flat support for the subsequent covering of the tarpaulin 2. The remaining implementation steps are the same as in the above embodiment and will not be repeated. Example 7:

[0042] This embodiment, based on the above embodiment, further defines the connection relationship between the frame 1, the auxiliary support 8, and the transparent tarpaulin 2. The transparent tarpaulin 2 is fixed to the frame 1 and the auxiliary support 8 by a number of Velcro straps or cable ties, which are spaced apart along the edges of the frame 1 and the auxiliary support 8. By using Velcro straps or cable ties spaced apart along the edges of the frame 1 and the auxiliary support 8, a tight fixation between the transparent tarpaulin 2 and the supporting structure is achieved. This ensures no gaps between the tarpaulin 2 and the frame 1 and the auxiliary support 8, enhancing sealing, and avoiding damage to the tarpaulin 2 caused by traditional bolt fixing. It also simplifies the installation and disassembly process and improves on-site work efficiency.

[0043] The specific implementation process is as follows: prepare several Velcro straps, with the rough side of the Velcro straps fixed to the edges of the frame 1 and auxiliary support 8, and the hook side sewn to the inside of the transparent tarpaulin 2; or high-strength polyester fiber binding straps, with the spacing between the Velcro straps or binding straps set to 200mm to ensure that the fixing points are evenly distributed.

[0044] Cover the frame 1 and auxiliary support 8 with the transparent tarpaulin 2. First, align the front and rear edges of the tarpaulin 2 with the front and rear ends of the frame 1. Then, starting from the top, attach the Velcro on the inside of the tarpaulin 2 to the Velcro on the frame 1 and auxiliary support 8 in sequence, or use cable ties to wrap and fix the tarpaulin 2 to the support, ensuring that each fixing point is evenly stressed and the tarpaulin 2 is taut without looseness.

[0045] Inspect the connections between the tarpaulin 2 and all supports to ensure there are no warping or gaps. For the seams of the tarpaulin 2, use a double-layer overlapping method before fixing to further improve the sealing effect. The remaining implementation steps are the same as in the above embodiment and will not be repeated. Example 8:

[0046] This embodiment, based on the above embodiments, further defines the structure of opening 3, such as... Figure 1As shown, a zipper is fixedly installed on the edge of the opening 3, and the length of the zipper covers the circumferential edge of the opening 3. Zippers are installed on the edges of the openings 3 of the transparent tarpaulin 2 on the front and rear sides of the work space. The zipper closure achieves a complete seal of the opening 3, avoiding the dust leakage problem that occurs when the opening 3 is fixed with ropes in the traditional way. At the same time, the zipper design facilitates quick entry and exit of workers and equipment handling, and does not damage the overall seal of the tarpaulin 2 during opening and closing, ensuring the continuous maintenance of cleanliness within the work space.

[0047] The specific implementation process is as follows: A resin zipper is selected, with its length matching the circumferential edge length of opening 3, ensuring complete coverage of opening 3 when closed. The zipper is checked to ensure it is securely installed, pulls smoothly without jamming, and the zipper teeth mesh tightly without gaps. When personnel or equipment enter or exit, the zipper is pulled to open opening 3; after entry or exit, the zipper is immediately closed, ensuring the zipper teeth are fully engaged and the tarpaulin 2 at the edge of opening 3 is tightly fitted without any gaps caused by wrinkles. If the zipper jams during operation, a small amount of silicone oil can be applied for lubrication. After operation, dust is cleaned from the zipper surface to prevent accumulation that could affect future use. The remaining implementation steps are the same as in the above embodiment and will not be repeated. Example 9:

[0048] This embodiment, based on the above embodiment, further specifies the materials of the frame 1 and the transparent tarpaulin 2. The frame 1 is made of stainless steel, and the transparent tarpaulin 2 is made of polyvinyl chloride coated fabric. By limiting the frame 1 to stainless steel and the transparent tarpaulin 2 to polyvinyl chloride coated fabric, the component materials are precisely matched with the on-site working environment and functional requirements: the stainless steel material ensures that the frame 1 has sufficient strength, with a tensile strength ≥520MPa and corrosion resistance, and a salt spray resistance time ≥1000h, adapting to complex outdoor environments; the polyvinyl chloride coated fabric has good light transmittance (≥85%), dustproof properties, and flexibility, facilitating observation of internal operations by workers, achieving spatial sealing, and being easy to fold, store, and reuse.

[0049] The specific implementation process is as follows: The frame 1 and auxiliary support 8 are made of 304 stainless steel. The surface is checked for rust and deformation, and the welds are firm and crack-free. A transparent tarpaulin 2 made of PVC coated fabric is selected, and its surface is checked for damage, uniform light transmission, no loose threads at the edges, and precise positioning of the pre-set ventilation openings 4 and openings 3. When installing the frame 1 and auxiliary support 8, avoid striking the stainless steel surface with hard objects to prevent damage to the coating and subsequent rust. When covering the transparent tarpaulin 2, avoid direct friction with sharp parts; use moderate force when securing with Velcro or cable ties to prevent the tarpaulin 2 from tearing. After the work is completed, clean the dust and stains from the surface of the frame 1. If there is slight rust, apply rust inhibitor. After washing and drying the transparent tarpaulin 2, fold and store it, avoiding exposure to sunlight or organic solvents to extend its service life. The remaining implementation steps are the same as in the above embodiment and will not be repeated.

[0050] It is understood that the working principle and process of the dustproof and purification device structure according to one embodiment of the present invention, such as the slide 5 and the portable vacuum pump 7, are existing technologies and are well known to those skilled in the art, and will not be described in detail here.

[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A dustproof and purification device for on-site fabrication of cable hot-melt joints, characterized in that, The system includes a symmetrically arranged arched frame (1) and a fully enclosed transparent tarpaulin (2). The transparent tarpaulin (2) completely covers the outer perimeter of the frame (1) and is fixedly connected to the frame to form a closed working space. The transparent tarpaulin (2) on the front and rear sides of the working space is provided with an opening (3). The transparent tarpaulin (2) on the circumferential side is provided with several ventilation holes (4), and each ventilation hole (4) is equipped with a dust filter. The lower part of the working space is provided with inward-facing sliding grooves (5). The two ends of the two frames (1) are fixed to the upper part of the sliding grooves (5) on both sides. A base plate (6) for supporting the workers is movably embedded between the sliding grooves (5). The base plate (6) seals the lower part of the working space. A portable vacuum pump (7) is installed outside the working space to continuously extract the air from the working space.

2. The dustproof and purification device for on-site fabrication of cable hot-melt joints according to claim 1, characterized in that, The base plate (6) has an internal cavity, and the upper part of the base plate (6) has a dot matrix distribution through hole (61) communicating with the cavity; the front part of the base plate (6) has a strip interface (62), and the rear part has a protrusion (63) matching the strip interface (62). The opening of the protrusion (63) communicates with the internal cavity of the base plate (6); adjacent base plates (6) are connected to the strip interface (62) by the protrusion (63), and the cavities of adjacent base plates (6) are interconnected after the connection; the protrusion (63) at the rear of the foremost base plate (6) is connected to the suction pipe of the vacuum pump (7), and the vacuum pump (7) draws air from the working space through the through hole (61) on the upper part of the base plate (6).

3. A dustproof and purification device for on-site fabrication of cable hot-melt joints according to claim 1 or 2, characterized in that, The base plate (6) is provided with sliders (64) on both the left and right sides that match the slide groove (5), and the sliders (64) are slidably connected to the slide groove (5).

4. A dustproof and purification device for on-site fabrication of cable hot-melt joints according to claim 3, characterized in that, An elastic sealing gasket is also provided in the groove (5). When the base plate (6) is embedded in the groove (5), the sliders (64) on both sides of the base plate (6) are tightly fitted with the elastic sealing gasket.

5. A dustproof and purification device for on-site fabrication of cable hot-melt joints according to claim 1 or 2, characterized in that, The upper surface of the base plate (6) is also provided with upward-protruding anti-slip texture (65).

6. A dustproof and purification device for on-site fabrication of cable hot-melt joints according to claim 1 or 2, characterized in that, Several auxiliary supports (8) are provided between the two symmetrical frames (1) at the front and back. The auxiliary supports (8) have the same shape as the frames (1) and their two ends are fixed to the sliding grooves (5) on both sides of the lower part.

7. A dustproof and purification device for on-site fabrication of cable hot-melt joints according to claim 6, characterized in that, The transparent tarpaulin (2) is fixed to the frame (1) and the auxiliary support (8) by a number of Velcro straps or cable ties, which are distributed at intervals along the edges of the frame (1) and the auxiliary support (8).

8. A dustproof and purification device for on-site fabrication of cable hot-melt joints according to claim 7, characterized in that, A zipper is fixedly installed on the edge of the opening (3), and the length of the zipper covers the circumferential edge of the opening (3).

9. A dustproof and purification device for on-site fabrication of cable hot-melt joints according to claim 1 or 2, characterized in that, The frame (1) is made of stainless steel, and the transparent tarpaulin (2) is made of polyvinyl chloride coated fabric.

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