Storage structure for PVC heat stabilizer

Abstract

The utility model discloses a storage structure for a PVC (polyvinyl chloride) heat stabilizer, and relates to the technical field of PVC heat stabilizer storage. The drying device comprises a double-layer storage tank, a top cover and a drying pipe, the lower end face of the top cover is provided with a first outer screw cylinder matched in the double-layer storage tank in a threaded mode, and the top cover is located on the peripheral side of the drying pipe. A second outer screw cylinder is welded to the upper end face of the top cover, an inner threaded cylinder is arranged on the peripheral side of the second outer screw cylinder in a threaded fit mode, a rotary knob is arranged on the upper end face of the inner threaded cylinder, two sliding grooves are formed in the side portion of the second outer screw cylinder and penetrate through the upper end face of the second outer screw cylinder, and two clamping blocks are arranged on the side portion of the drying pipe. According to the drying device, the knob is matched with the internal thread cylinder, so that the knob can be conveniently rotated to relieve the limitation of the internal thread cylinder on the trapezoidal sliding block, the trapezoidal sliding block slides outwards under the elastic action and protrudes out of the side part of the second external thread cylinder, a user can conveniently lift the drying pipe upwards, and the drying agent can be conveniently replaced.

Description

Technical Field

[0001] This utility model belongs to the field of PVC heat stabilizer storage, specifically, it relates to a storage structure for PVC heat stabilizers. Background Technology

[0002] PVC heat stabilizers are mainly used in PVC and other chlorine-containing polymers. They are generally classified according to their chemical composition, and can be classified as basic lead salts, metal soaps, organotin compounds, epoxy compounds, and phosphites.

[0003] Chinese Patent No. CN211894433U discloses a PVC heat stabilizer storage device, comprising: an outer shell, a first heat insulation layer fixedly connected to the inner wall of the outer shell, an inner shell fixedly connected to the inner side of the first heat insulation layer, a threaded ring fixedly connected to the upper part of the inner wall of the outer shell, the upper outer part of the inner shell being connected to the threaded ring by threads, a cover plate being threadedly inserted into the upper inner part of the inner shell, a handle fixedly connected to the middle of the upper end of the cover plate, a second heat insulation layer fixedly connected to the lower end of the cover plate, a support ring fixedly connected to the outer lower end of the outer shell, and a heat insulation tube fixedly inserted into the middle of the lower side wall of the outer shell.

[0004] The PVC heat stabilizer storage device disclosed in this application requires the storage device to be disassembled and installed from the bottom of the outer shell. Therefore, when replacing the desiccant column, the storage device needs to be tilted or inverted. However, the handle is fixed to the top of the cover plate, which affects the stability of the storage device when inverted, making the replacement of the desiccant column inconvenient. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a storage structure for PVC heat stabilizer, thereby solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A storage structure for PVC heat stabilizer includes: a double-layer storage tank, a top cover, and a drying tube. The top cover is located above the double-layer storage tank, and the lower end face of the top cover is provided with an external screw cylinder that is threaded into the double-layer storage tank. The top cover is located on the periphery of the drying tube, and the lower part of the drying tube is located inside the double-layer storage tank.

[0008] The top cover has an external screw cylinder welded to its upper end face. An internal screw cylinder is threaded around the external screw cylinder. A knob is located on the upper end face of the internal screw cylinder, above the internal screw cylinder and the drying tube. Two sliding grooves are provided on the side of the external screw cylinder, which penetrate the upper end face of the external screw cylinder. Two locking blocks are provided on the side of the drying tube, which are engaged in the sliding grooves. A storage groove is provided on the side of the locking blocks away from the drying tube, and a trapezoidal slider slides elastically in the storage groove.

[0009] Optionally, the drying tube includes a tube body, a top cover and an outer screw cylinder, both located around the tube body. A locking block is located on the side of the tube body, and the side of the tube body has multiple slots. A mesh plate is installed in the slots, and the mesh plate is located inside the double-layer storage tank.

[0010] Optionally, the interlayer space of the double-layer storage tank is equipped with a heat insulation layer one, and the lower end face of the top cover and the inner wall periphery of the outer screw cylinder one are equipped with a heat insulation pad two, which is located on the periphery of the tube body.

[0011] Optionally, a mesh cylinder corresponding to the tube body is installed on the lower end face of the inner wall of the double-walled storage tank, and the mesh cylinder is located on the periphery of the tube body.

[0012] Optionally, a sealing ring is installed on the lower end face of the top cover. The sealing ring is located on the periphery of the outer screw cylinder and between the double-layer storage tank and the top cover.

[0013] Optionally, two handles are symmetrically installed on the side of the top cover.

[0014] Optionally, a sealing gasket is installed on the lower end face of the knob, the internal threaded cylinder is located around the sealing gasket, and the sealing gasket is located between the external threaded cylinder, the tube body and the knob.

[0015] Optionally, side plates are installed on both sides of the trapezoidal slider, and limiting grooves are provided on both sides of the storage slot. The side plates slide in the limiting grooves, and two springs are installed between the side plates and one side of the limiting grooves.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0017] The knob engages with the internal threaded cylinder, allowing the internal threaded cylinder to release its restriction on the trapezoidal slider. This allows the slider to slide outward under elasticity and protrude from the side of the external threaded cylinder, making it easy for the user to lift the drying tube upwards for convenient replacement of the desiccant. During reinstallation, the threaded cylinder presses against the inclined surface of the trapezoidal slider, forcing it to automatically retract into the storage groove, simultaneously completing the precise positioning and sealing of the drying tube.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

[0020] Figure 1 This is a schematic diagram of the three-dimensional structure;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure;

[0022] Figure 3 This is a schematic diagram of the internal structure of the card block.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] Double-layer storage tank 1, insulation layer 1 2, mesh cylinder 3, top cover 4, handle 401, external screw cylinder 2 5, sliding groove 501, external screw cylinder 1 6, sealing ring 7, insulation pad 2 8, knob 9, internal thread cylinder 901, pipe body 10, slot 1001, mesh plate 11, locking block 12, trapezoidal slider 13, side plate 1301, spring 14, sealing gasket 15.

[0025] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0026] 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.

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] PVC heat stabilizers are crucial in the plastics processing industry, as their performance directly affects the quality and stability of PVC products. However, due to their relatively reactive chemical properties, heat stabilizers require stringent storage conditions; improper storage can easily lead to performance degradation or even failure. Therefore, designing a scientifically sound storage structure is of great significance for ensuring the quality of PVC heat stabilizers and extending their effective shelf life.

[0029] The storage requirements for PVC heat stabilizers include the following aspects:

[0030] 1. Moisture-proof requirements: Most PVC heat stabilizers are highly hygroscopic. Moisture intrusion can trigger hydrolysis and other chemical reactions, damaging their chemical structure and reducing their heat-stabilizing effect. Therefore, the storage structure must have excellent moisture-proof performance to effectively prevent external moisture from entering.

[0031] 2. Anti-oxidation requirements: Some heat stabilizer components are prone to oxidation reactions with oxygen in the air, leading to performance degradation. The storage structure should create a low-oxygen environment to reduce the contact between the heat stabilizer and oxygen.

[0032] 3. Temperature stability: Temperature fluctuations can affect the physicochemical properties of heat stabilizers. An ideal storage structure should have a certain temperature regulation capability to maintain a relatively stable storage temperature and avoid changes in the performance of heat stabilizers due to temperature variations.

[0033] 4. Space utilization and ease of access: While meeting storage requirements, the storage structure should be rationally planned to facilitate the classified storage and rapid access of heat stabilizers, thereby improving warehouse management efficiency.

[0034] I. Storage Design Direction

[0035] 1. Main storage container

[0036] Material selection: High-density polyethylene (HDPE) or polypropylene (PP) and other plastic materials with excellent corrosion resistance and moisture resistance are used. These materials not only effectively resist the chemical corrosion that may be caused by heat stabilizers, but also have good sealing properties to prevent moisture penetration.

[0037] Structural Design: The container features a double-layer structure. The inner layer directly contacts the heat stabilizer and has a smooth surface for easy residue cleaning; the outer layer provides additional protection and support. The top of the container is equipped with a sealing cap, employing a threaded connection or snap-on seal design to ensure a tight seal. A rubber sealing ring is incorporated into the sealing cap to further enhance the sealing effect and prevent air and moisture from entering.

[0038] 2. Moisture-proof system

[0039] Desiccant Placement: A dedicated desiccant placement area is provided inside the container, which can utilize a removable mesh structure. The desiccant should be a highly absorbent and reusable type, such as color-changing silica gel or montmorillonite. When the desiccant reaches saturation, it can be regenerated through heating or other methods to continue its moisture-proof function.

[0040] Humidity monitoring and control: A high-precision humidity sensor is installed inside the container to monitor the internal humidity in real time. Once the humidity exceeds the set safety threshold, the connected intelligent control system will activate dehumidification equipment, such as a small dehumidifier, or introduce dry air through the ventilation system to reduce the humidity inside the container and ensure that the heat stabilizer is in a dry environment.

[0041] 3. Anti-oxidation measures

[0042] Inert gas filling: Before sealing the storage container, inert gases such as nitrogen are filled into the interior to displace the air and reduce the oxygen content. The container is equipped with gas filling and venting interfaces for easy replenishment or replacement of inert gas when necessary. Simultaneously, an oxygen sensor is installed to monitor the oxygen concentration inside the container in real time. When the oxygen concentration rises, inert gas is replenished promptly to maintain a low-oxygen environment.

[0043] Antioxidant Packaging Materials: For some heat stabilizers that are extremely sensitive to oxidation, inner packaging materials with oxygen-barrier properties can be used, such as aluminum-plastic composite bags. The aluminum foil layer in the aluminum-plastic composite bag can effectively block oxygen penetration, providing additional anti-oxidation protection for the heat stabilizer.

[0044] 4. Temperature control device

[0045] Application of thermal insulation materials: Thermal insulation materials, such as polyurethane foam and aerogel, are filled between the two layers of the storage container to reduce the impact of external temperature changes on the container's interior. These insulation materials have extremely low thermal conductivity, effectively preventing heat transfer and maintaining a relatively stable temperature inside the container.

[0046] Temperature monitoring and regulation: A high-precision temperature sensor is installed and connected to the intelligent control system. When the temperature exceeds the suitable range, the system automatically activates heating or cooling equipment. For example, when the temperature is too low, heating is provided by the built-in electric heating wire; when the temperature is too high, a small cooling fan is activated or an external cooling system is connected to cool down, ensuring that the storage temperature of the heat stabilizer is always within the ideal range.

[0047] 5. Storage layout and access design

[0048] Zoned storage: Heat stabilizers are stored in zones according to their type, model, batch, etc. Multiple adjustable shelves or partitions are installed inside the containers to separate different types of heat stabilizers. Each zone is clearly labeled for easy retrieval.

[0049] Handling and retrieval aids: Rollers are installed at the bottom of the storage containers for easy movement. Additionally, well-designed handles or hooks facilitate manual or mechanical handling. For heavier heat stabilizer packaging, small lifts or trolleys can be provided to improve ease of access and safety.

[0050] II. Maintenance and Management

[0051] Regular inspections: Conduct comprehensive inspections of the storage structure regularly, including sealing performance, desiccant status, and the accuracy of temperature and humidity monitoring equipment. Check the sealing rings of the sealing cap for signs of aging or deformation; replace them promptly if any problems are found. Observe the color change of the desiccant and regenerate or replace any desiccant that has become saturated with moisture.

[0052] Equipment maintenance: Perform regular maintenance on temperature control devices, dehumidification equipment, gas charging and monitoring equipment, etc. Clean dust from equipment surfaces, check equipment operating status, replace worn parts promptly, ensure normal equipment operation, and maintain a good storage environment.

[0053] Inventory Management: Establish a comprehensive inventory management system to record information such as the arrival time, storage location, and shelf life of heat stabilizers. Follow the first-in, first-out (FIFO) principle, prioritizing heat stabilizers with longer storage times to avoid performance degradation due to long-term stockpiling. Simultaneously, conduct regular inventory checks to promptly replenish any shortages of heat stabilizer types and quantities.

[0054] This storage structure, specifically designed for PVC heat stabilizers, comprehensively considers factors such as moisture protection, oxidation prevention, temperature stability, space utilization, and ease of access. Through reasonable material selection, structural design, and supporting environmental control devices, it can provide a stable and suitable storage environment for PVC heat stabilizers, effectively ensuring their quality and performance, reducing losses caused by improper storage, and improving the production efficiency and product quality of plastic processing enterprises.

[0055] Please see Figure 1-3 As shown, this embodiment provides a storage structure for PVC heat stabilizer, including: a double-layer storage tank 1, a top cover 4 and a drying tube. The top cover 4 is located above the double-layer storage tank 1. The lower end face of the top cover 4 is provided with an external screw cylinder 6 that is threaded into the double-layer storage tank 1. The top cover 4 is located on the periphery of the drying tube, and the lower part of the drying tube is located inside the double-layer storage tank 1.

[0056] The top cover 4 has an outer screw cylinder 2 5 welded to its upper end face. The outer screw cylinder 2 5 is threaded with an inner screw cylinder 901. The inner screw cylinder 901 has a knob 9 on its upper end face. The knob 9 is located above the inner screw cylinder 901 and the drying tube. The outer screw cylinder 2 5 has two sliding grooves 501 on its side. The sliding grooves 501 penetrate the upper end face of the outer screw cylinder 2 5. The drying tube has two locking blocks 12 on its side. The locking blocks 12 are locked in the sliding grooves 501. The side of the locking blocks 12 away from the drying tube has a storage groove. A trapezoidal slider 13 slides elastically in the storage groove.

[0057] One application of this embodiment is as follows: When the desiccant in the drying tube needs to be replaced, the knob 9 can be turned to unscrew the inner threaded cylinder 901 from the outer threaded cylinder 5. At this time, the outer threaded cylinder 5 releases its restriction on the trapezoidal slider 13, allowing the trapezoidal slider 13 to slide a certain distance out of the receiving groove under the action of elastic force. At this time, the trapezoidal slider 13 protrudes from the side of the outer threaded cylinder 5, making it easy for the user to pull the drying tube upwards, and then tilt the drying tube and replace the desiccant. The drying tube can then be reset according to the above operation. When the inner threaded cylinder 901 is screwed back on, the inner threaded cylinder 901 presses against the inclined surface of the trapezoidal slider 13, allowing it to slide back into the receiving groove. It should be noted that all electrical devices involved in this application can be powered by a battery or an external power source.

[0058] By engaging the knob 9 with the internal threaded cylinder 901, it is easy to rotate the knob 9 to release the internal threaded cylinder 901 from limiting the trapezoidal slider 13, allowing it to slide outward under elastic action and protrude from the side of the external threaded cylinder 5, making it easy for the user to lift the drying tube upward, thus achieving convenient replacement of the desiccant. During reinstallation, the threaded cylinder 901 presses the inclined surface of the trapezoidal slider 13, forcing the trapezoidal slider 13 to automatically retract into the storage groove, simultaneously completing the precise positioning and sealing locking of the drying tube.

[0059] like Figure 2 As shown, the drying tube of this embodiment includes a tube body 10, a top cover 4 and an outer screw cylinder 5, both located around the tube body 10. A locking block 12 is provided on the side of the tube body 10. The side of the tube body 10 is provided with multiple slots 1001. A mesh plate 11 is installed in the slot 1001. The mesh plate 11 is located in the double-layer storage tank 1. The slots 1001 and the mesh plate 11 cooperate to facilitate the contact of moisture through the mesh of the mesh plate 11 with the desiccant, thereby improving the adsorption efficiency. At the same time, the mesh plate 11 is used to prevent desiccant particles from leaking from the slots 1001 and to reduce the probability of PVC heat stabilizer entering the tube body 10.

[0060] like Figure 2 As shown, the double-layer storage tank 1 of this embodiment is equipped with a heat insulation layer 2 in the interlayer space. The lower end face of the top cover 4 and the inner wall of the outer screw cylinder 6 are equipped with a heat insulation pad 8. The heat insulation pad 8 is located on the periphery of the tube body 10. The heat insulation layer 2 and the heat insulation pad 8 work together to form a heat insulation barrier. The heat insulation layer 2 can effectively block the direct conduction of external ambient temperature to the PVC heat stabilizer in the tank, reducing the fluctuation of material properties caused by temperature difference. The heat insulation pad 8 is located on the periphery of the tube body 10, which can improve the heat insulation effect of the top cover 4. It can also fill the gap between the tube body 10 and the top cover 4 with flexible material to help improve the sealing performance and prevent moisture from seeping in.

[0061] like Figure 2As shown, the lower end face of the inner wall of the double-layer storage tank 1 in this embodiment is equipped with a mesh cylinder 3 corresponding to the tube body 10. The mesh cylinder 3 is located around the tube body 10. The design of the mesh cylinder 3 surrounding the tube body 10 forms a physical guiding and limiting function. The mesh cylinder 3 can limit the flow range of PVC heat stabilizer particles in the tank, prevent them from accumulating in the original insertion path area of ​​the tube body 10, and avoid the tube body 10 from shifting or getting stuck when it is reinserted due to material blockage.

[0062] like Figure 2 As shown, a sealing ring 7 is installed on the lower end face of the top cover 4 in this embodiment. The sealing ring 7 is located on the periphery of the outer screw cylinder 6 and between the double-layer storage tank 1 and the top cover 4. The sealing ring 7 improves the sealing between the top cover 4 and the double-layer storage tank 1 and reduces the probability of moisture entering the double-layer storage tank 1.

[0063] like Figure 1 As shown, two handles 401 are symmetrically installed on the side of the top cover 4 in this embodiment, which facilitates the support, removal and rotation of the top cover 4.

[0064] like Figure 2 As shown, in this embodiment, a sealing gasket 15 is installed on the lower end face of the knob 9. The internal threaded cylinder 901 is located on the periphery of the sealing gasket 15. The sealing gasket 15 is located between the external threaded cylinder 5, the tube body 10 and the knob 9. The sealing gasket 15 improves the sealing between the knob 9 and the tube body 10 and reduces the probability of moisture entering the tube body 10.

[0065] like Figure 3 As shown, the trapezoidal slider 13 in this embodiment is equipped with side plates 1301 on both sides, and the storage groove is provided with limiting grooves on both sides. The side plates 1301 are slidably engaged in the limiting grooves. Two springs 14 are installed between the side plates 1301 and one side of the limiting groove. By cooperating with the side plates 1301 and the limiting grooves, the sliding distance of the trapezoidal slider 13 is limited, reducing the probability of the trapezoidal slider 13 disengaging from the storage groove.

[0066] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A storage structure for PVC heat stabilizers, characterized in that, include: The double-layer storage tank (1), top cover (4) and drying tube are provided. The lower end face of the top cover (4) is provided with an external screw cylinder (6) that is threaded into the double-layer storage tank (1). The top cover (4) is located on the periphery of the drying tube. The top cover (4) is welded with an outer screw cylinder (5). The outer screw cylinder (5) is threaded with an inner screw cylinder (901). The inner screw cylinder (901) is provided with a knob (9) on its upper end. The outer screw cylinder (5) is provided with two sliding grooves (501) on its side. The sliding grooves (501) penetrate the upper end of the outer screw cylinder (5). The drying tube is provided with two locking blocks (12) on its side. The locking blocks (12) are locked in the sliding grooves (501). The side of the locking blocks (12) away from the drying tube is provided with a storage groove. A trapezoidal slider (13) slides elastically in the storage groove.

2. The storage structure for a PVC heat stabilizer according to claim 1, characterized in that, The drying tube includes a tube body (10), a clamp (12) is provided on the side of the tube body (10), and the side of the tube body (10) is provided with multiple slots (1001), and a mesh plate (11) is installed in the slot (1001).

3. The storage structure for a PVC heat stabilizer according to claim 2, characterized in that, The double-layer storage tank (1) is equipped with a heat insulation layer (2) in the interlayer space, and a heat insulation pad layer (8) is installed on the lower end face of the top cover (4) and the inner wall of the outer screw cylinder (6).

4. A storage structure for a PVC heat stabilizer according to claim 2, characterized in that, The lower end face of the inner wall of the double-layer storage tank (1) is equipped with a mesh cylinder (3) corresponding to the tube body (10).

5. A storage structure for a PVC heat stabilizer according to claim 1, characterized in that, A sealing ring (7) is installed on the lower end face of the top cover (4), and the sealing ring (7) is located on the periphery of the outer screw cylinder (6).

6. A storage structure for a PVC heat stabilizer according to claim 5, characterized in that, The top cover (4) is symmetrically equipped with two handles (401) on the side.

7. A storage structure for a PVC heat stabilizer according to claim 5, characterized in that, A sealing gasket (15) is installed on the lower end face of the knob (9), and the internal threaded cylinder (901) is located on the periphery of the sealing gasket (15).

8. A storage structure for a PVC heat stabilizer according to claim 1, characterized in that, The trapezoidal slider (13) is equipped with side plates (1301) on both sides, and the storage slot is equipped with limiting slots on both sides. Two springs (14) are installed between the side plate (1301) and one side of the limiting slot.

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