EPP particle pre-pressing tank with good pre-pressing effect

Abstract

The utility model relates to pre -press tank technical field, concretely relates to a kind of EPP particle pre -press tank with good pre -press effect, including pre -press tank, and residual pressure conversion mechanism for realizing residual pressure utilization being communicated with pre -press tank;Residual pressure conversion mechanism includes cabinet, cyclone separator for being installed in cabinet and being used to intercept residual particle in the gas discharged by pre -press tank, condensation dehumidifier for being installed in cabinet and being used to dehumidify the gas discharged by cyclone separator, activated carbon filter tower for being installed in cabinet and being used to filter gas after dehumidification, it can recycle residual pressure energy of pre -press tank, waste is no longer directly discharged in need of pressure reducing tank with pressure exhaust, but directly conveyed to pre -press tank in need of pressure increase after multistage purification, make the compressed gas pressure energy lost in traditional system convert into effective power source for driving the same system production;Energy accumulator cooperates valve dynamic regulation pipe network pressure simultaneously, temporarily stores and responds to pressure compensation demand.

Description

Technical Field

[0001] This utility model relates to the field of pre-compression tank technology, specifically to an EPP particle pre-compression tank with good pre-compression effect. Background Technology

[0002] EPP particle pre-compression tanks are key pretreatment equipment in the production of EPP (expanded polypropylene) products. They are used to process pre-foamed particles. The particles are stored and pressurized in an environment above atmospheric pressure, which further removes residual moisture from the particles and makes their size and density more uniform and stable. At the same time, the particle volume is moderately compressed to increase their bulk density. This process significantly improves the flowability and filling properties of the particles and provides a stable and continuous supply for subsequent molding processes.

[0003] Particles treated in a pre-compression tank ensure that the final EPP products have better density uniformity, surface quality, and mechanical properties, making it an indispensable step in ensuring the production of high-quality EPP products. However, it still has some problems: 1) Pressure energy is wasted when the pre-compression tank depressurizes and exhausts; 2) Additional air compressor energy is required when pressurizing; 3) Therefore, in view of the above situation, there is an urgent need to develop an EPP particle pre-compression tank with good pre-compression effect to overcome the shortcomings in current practical applications and meet current needs. Utility Model Content

[0004] The purpose of this invention is to provide an EPP particle pre-compression tank with good pre-compression effect, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an EPP particle pre-compression tank with good pre-compression effect, comprising a pre-compression tank and a residual pressure conversion mechanism connected to the pre-compression tank and realizing residual pressure utilization;

[0006] The residual pressure conversion mechanism includes a cabinet, a cyclone separator installed inside the cabinet to intercept residual particles in the gas discharged from the pre-pressurization tank, a condenser dehumidifier installed inside the cabinet to dehumidify the gas discharged from the cyclone separator, and an activated carbon filter tower installed inside the cabinet to filter the dehumidified gas.

[0007] In practical use, the gas between the pre-pressurization tanks is recycled through the residual pressure conversion mechanism. The gas discharged from the depressurization tank is sequentially passed through a cyclone separator to efficiently intercept residual EPP particles, a condenser dehumidifier to deeply remove moisture, and an activated carbon filter tower to precisely adsorb impurities, forming clean and dry compressed gas, which is directly transferred to the pre-pressurization tank that needs to be pressurized. This not only significantly reduces the energy consumption of the air compressor and saves gas source costs, but also ensures the quality of the circulating gas through multi-stage purification, avoiding particle contamination or moisture affecting the pre-pressurization effect. At the same time, the compact and integrated cabinet structure optimizes the space layout and improves the energy efficiency and reliability of the system.

[0008] Preferably, an air inlet pipe and an air outlet pipe are installed on a single pre-pressure tank, and an electrically controlled valve a is installed between the air inlet pipe, the air outlet pipe and the pre-pressure tank.

[0009] Preferably, the cabinet is equipped with adapter pipe a and adapter pipe b, and the cabinet is provided with several air inlet ports that are connected to adapter pipe a. An electric control valve b is installed between the air inlet ports and adapter pipe a. The cabinet is provided with several exhaust ports that are connected to adapter pipe b, and an electric control valve c is installed between the exhaust ports and adapter pipe b.

[0010] Preferably, the exhaust pipe is connected to and fixed to the air intake port, and the air intake pipe is connected to and fixed to the exhaust port.

[0011] In practical use, by installing electrically controlled valves a on the inlet and outlet pipes of the pre-pressurization tank, and integrating transfer pipes a and b within the cabinet of the residual pressure conversion mechanism, along with multiple sets of inlet interfaces with independent electrically controlled valves b and outlet interfaces with electrically controlled valves c on the cabinet, and by fixing the outlet pipe to the inlet interface and the inlet pipe to the outlet interface, a fully rigid pipe-connected gas-oriented closed-loop circuit is constructed. This not only enables rapid and precise on / off control of each pre-pressurization tank and the residual pressure conversion mechanism through multiple electrically controlled valve groups, ensuring the directional input of exhaust gas from the depressurization tank into the purification system and seamless reception of purified gas source by the booster tank, but also completely avoids the risk of leakage from hose connections, significantly improving the system's airtightness and response efficiency. It provides reliable hardware support for dynamic pressure regulation under multi-tank parallel operation conditions, while also preventing pollution caused by mixing inlet and outlet pipes.

[0012] Preferably, the air outlet of the transfer pipe a is connected to and fixed to the air inlet of the cyclone separator.

[0013] In practical use, by using a fixed rigid connection between the outlet of the transfer pipe a and the inlet of the cyclone separator, a seamless waste gas transport channel is constructed. This allows the particulate-containing gas discharged from the pre-compression tank to flow into the transfer pipe a through the inlet interface and then directly into the cyclone separator for primary purification via the shortest path. This not only completely eliminates the risk of wear and leakage from the hose connection under particle scouring, but also reduces airflow resistance and pressure loss by simplifying the pipeline structure. At the same time, it ensures that high-concentration waste gas enters the separation system in a stable flow state, providing ideal working conditions for the efficient interception of the cyclone separator and further improving the sealing performance of the residual pressure recovery system and the reliability of particle purification.

[0014] Preferably, the exhaust port of the cyclone separator is connected to the condenser dehumidifier, and a collector for collecting residual particles is installed at the bottom of the cyclone separator.

[0015] In practical use, by directly connecting the exhaust port of the cyclone separator to the condenser dehumidifier and integrating a particle collector at its bottom, a continuous and closed gas purification chain is constructed. After the dust-laden gas is centrifugally separated by the cyclone separator, the clean airflow is directly sent to the condenser dehumidifier for deep dehydration in a zero-leakage manner, while the separated residual particles fall into the bottom collector for centralized processing in real time. This not only eliminates the risk of particles being mixed into the airflow through physical isolation, but also achieves seamless connection of the purification process, significantly improving the stability of continuous system operation. At the same time, the modular design of the collector facilitates particle recovery and cleaning, avoiding pressure drop or separation efficiency reduction caused by material accumulation inside the separator, and ensuring the long-term efficient operation of the residual pressure recovery system.

[0016] Preferably, a reflux pipe is installed between the outlet of the activated carbon filter tower and the inlet of the transfer pipe b, and an accumulator is installed in the middle section of the reflux pipe.

[0017] In practical use, a pressure dynamic balance system is constructed by adding a return pipe with an accumulator between the outlet of the activated carbon filter tower and the inlet of the transfer pipe b. When the instantaneous gas consumption surges due to the synchronous pressurization of multiple pre-pressurization tanks, the accumulator can release the pre-stored high-pressure purified gas, which is quickly replenished into the transfer pipe b through the return pipe to ensure a stable gas pressure supply. Conversely, during periods of low gas consumption, the surplus gas can be temporarily stored in the accumulator, which not only eliminates the impact of pressure fluctuations in the transfer pipe b on the activated carbon filter tower, but also achieves efficient gas source scheduling through energy storage. This significantly improves the system response speed and pressure control accuracy under the condition of multiple tanks operating in parallel, while avoiding mechanical wear caused by frequent start-stop of the solenoid valve c.

[0018] Preferably, an electrically controlled three-way valve is installed between the accumulator and the return pipe.

[0019] In practical use, an intelligent pressure regulation hub is constructed by adding an electrically controlled three-way valve between the accumulator and the return pipe. The electrically controlled three-way valve switches the charging and discharging mode of the accumulator in real time according to the gas pressure changes in the transfer pipe b: when the system needs to be pressurized, the valve opens the gas path from the accumulator to the return pipe and releases the pre-stored high-pressure gas; when the gas source is sufficient, it switches to the charging path from the return pipe to the accumulator, while isolating the outlet of the activated carbon filter tower. This not only achieves dynamic compensation for gas pressure fluctuations, but also avoids energy loss caused by frequent charging and discharging of the accumulator through precise on / off switching. More importantly, it completely isolates the risk of high-pressure gas back impacting the filter tower, ensuring the stability of system pressure, extending the life of core equipment and improving energy utilization efficiency.

[0020] Compared with the prior art, this utility model provides an EPP particle pre-compression tank with good pre-compression effect, which has the following beneficial effects:

[0021] It can recycle the residual pressure energy of the pre-pressurization tank. The pressurized waste gas in the depressurization tank is no longer directly discharged and wasted. Instead, it is directly transported to the pre-pressurization tank that needs to be pressurized after multi-stage purification. This transforms the compressed gas pressure energy lost in the traditional system into an effective power source to drive the production of the same system. At the same time, the accumulator works with the valve to dynamically regulate the pipeline pressure, temporarily store the excess gas pressure and respond to the pressure replenishment demand, realizing the circulation of pressure energy between tank groups. This not only eliminates the repeated energy consumption of the air compressor to the pressurization tank, but also improves the utilization rate of residual pressure, significantly reduces the overall energy consumption and carbon emissions, and transforms the waste gas pressure into sustainable production power. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the 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.

[0023] Figure 1 This is a schematic diagram of the front structure of this utility model;

[0024] Figure 2 This is a side view of the present invention.

[0025] Figure 3 This is a schematic diagram of the cabinet structure of this utility model;

[0026] Figure 4 This is one of the structural schematic diagrams of the residual pressure conversion mechanism of this utility model;

[0027] Figure 5 This is the second schematic diagram of the residual pressure conversion mechanism of this utility model;

[0028] Figure 6 This is a side view of the residual pressure conversion mechanism of this utility model.

[0029] In the diagram: 10, Pre-compression tank; 110, Inlet pipe; 120, Exhaust pipe; 130, Electrically controlled valve a; 20, Residual pressure conversion mechanism; 210, Cabinet; 220, Transfer pipe a; 221, Electrically controlled valve b; 222, Inlet port; 230, Transfer pipe b; 231, Electrically controlled valve c; 232, Exhaust port; 240, Cyclone separator; 241, Collector; 250, Condensation dehumidifier; 260, Activated carbon filter tower; 270, Return pipe; 280, Accumulator. 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] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Example:

[0033] Please see Figures 1-6 This utility model provides a technical solution: an EPP particle pre-compression tank with good pre-compression effect, including a pre-compression tank 10 and a residual pressure conversion mechanism 20 connected to the pre-compression tank 10 and realizing residual pressure utilization;

[0034] The residual pressure conversion mechanism 20 includes a cabinet 210, a cyclone separator 240 installed in the cabinet 210 to intercept residual particles in the gas discharged from the pre-pressurization tank 10, a condenser dehumidifier 250 installed in the cabinet 210 to dehumidify the gas discharged from the cyclone separator 240, and an activated carbon filter tower 260 installed in the cabinet 210 to filter the dehumidified gas. It should be noted that the pre-pressurization tank 10 and the residual pressure conversion mechanism 20 are equipped with several air pressure detection elements to assist in the utilization of residual pressure.

[0035] In practical use, the gas in the pre-pressurization tank 10 is recycled through the residual pressure conversion mechanism 20. The gas discharged from the depressurization tank is sequentially passed through the cyclone separator 240 to efficiently intercept residual EPP particles, the condenser dehumidifier 250 to deeply remove moisture, and the activated carbon filter tower 260 to precisely adsorb impurities, forming clean and dry compressed gas, which is directly transferred to the pre-pressurization tank 10 that needs to be pressurized. This not only significantly reduces the energy consumption of the air compressor and saves gas source costs, but also ensures the quality of the recycled gas through multi-stage purification, avoiding particle contamination or moisture affecting the pre-pressurization effect. At the same time, the compact and integrated cabinet 210 structure optimizes the space layout and improves the energy efficiency and reliability of the system.

[0036] Preferably, an air inlet pipe 110 and an exhaust pipe 120 are installed on a single pre-pressurization tank 10, and an electric control valve a130 is installed between the air inlet pipe 110, the exhaust pipe 120 and the pre-pressurization tank 10.

[0037] Preferably, the cabinet 210 is equipped with a transfer pipe a220 and a transfer pipe b230. Several air inlets 222 communicating with the transfer pipe a220 are installed on the cabinet 210. An electric control valve b221 is installed between the air inlets 222 and the transfer pipe a220. Several exhaust ports 232 communicating with the transfer pipe b232 are installed on the cabinet 210. An electric control valve c231 is installed between the exhaust ports 232 and the transfer pipe b230.

[0038] Preferably, the exhaust pipe 120 is connected to and fixed to the air intake port 222, and the air intake pipe 110 is connected to and fixed to the exhaust port 232.

[0039] In practical use, an electrically controlled valve a130 is installed on the inlet pipe 110 and the outlet pipe 120 of the pre-pressure tank 10, and a transfer pipe a220 and a transfer pipe b230 are integrated in the cabinet 210 of the residual pressure conversion mechanism 20. In conjunction with multiple sets of inlet ports 222 with independent electrically controlled valves b221 and outlet ports 232 with electrically controlled valves c231 on the cabinet 210, and the outlet pipe 120 is fixedly connected to the inlet port 222 and the inlet pipe 110 is fixedly connected to the outlet port 232, a gas-oriented closed-loop circuit with full rigid pipe connection is constructed. This not only enables rapid and accurate on / off control of each pre-pressure tank 10 and the residual pressure conversion mechanism 20 through multiple electrically controlled valve groups, ensuring that the exhaust gas from the pressure reducing tank is directionally input into the purification system and the pressure boosting tank seamlessly receives the purified gas source, but also completely avoids the risk of leakage from hose connections, significantly improves the airtightness and response efficiency of the system, provides reliable hardware support for dynamic pressure adjustment under multi-tank parallel operation, and avoids pollution caused by mixing inlet and outlet pipes.

[0040] Preferably, the air outlet of the transfer pipe a220 is connected to and fixed to the air inlet of the cyclone separator 240.

[0041] In practical use, a seamless waste gas transport channel is constructed by fixing the outlet of the transfer pipe a220 to the inlet of the cyclone separator 240. This allows the particulate-containing gas discharged from the pre-compression tank 10 to flow into the transfer pipe a220 via the inlet interface 222, and then directly to the cyclone separator 240 for primary purification via the shortest path. This not only completely eliminates the risk of wear and leakage from the hose connection under particle scouring, but also reduces airflow resistance and pressure loss by simplifying the pipeline structure. At the same time, it ensures that high-concentration waste gas enters the separation system in a stable flow state, providing ideal working conditions for the efficient interception of the cyclone separator 240, and further improving the sealing performance of the residual pressure recovery system and the reliability of particle purification.

[0042] Preferably, the exhaust port of the cyclone separator 240 is connected to the condenser dehumidifier 250, and a collector 241 for collecting residual particles is installed at the bottom of the cyclone separator 240.

[0043] In practical use, by directly connecting the exhaust port of the cyclone separator 240 to the condenser dehumidifier 250, and integrating a particle collector 241 at its bottom, a continuous and closed gas purification chain is constructed. After the dust-laden gas is centrifugally separated by the cyclone separator 240, the clean airflow is directly transported to the condenser dehumidifier 250 for deep dehydration in a zero-leakage manner, while the separated residual particles fall into the bottom collector 241 for centralized processing in real time. This not only eliminates the risk of particles being mixed into the airflow through physical isolation, but also achieves seamless connection of the purification process, significantly improving the stability of continuous system operation. At the same time, the modular design of the collector 241 facilitates particle recovery and cleaning, avoiding pressure drop increases or separation efficiency reduction caused by material accumulation inside the separator, and ensuring long-term efficient operation of the residual pressure recovery system.

[0044] Preferably, a reflux pipe 270 is installed between the outlet of the activated carbon filter tower 260 and the inlet of the transfer pipe b230, and an accumulator 280 is installed in the middle section of the reflux pipe 270.

[0045] In practical use, a pressure dynamic balance system is constructed by adding a return pipe 270 with an accumulator 280 between the outlet of the activated carbon filter tower 260 and the inlet of the transfer pipe b230. When the instantaneous gas consumption surges due to the synchronous pressurization of multiple pre-pressurization tanks 10, the accumulator 280 can release the pre-stored high-pressure purified gas, which is quickly replenished into the transfer pipe b230 through the return pipe 270 to ensure a stable gas pressure supply. Conversely, when the gas consumption is low, the surplus gas can be temporarily stored in the accumulator 280, which not only eliminates the impact of pressure fluctuations in the transfer pipe b230 on the activated carbon filter tower 260, but also achieves efficient gas source scheduling through energy storage, significantly improving the system response speed and pressure control accuracy under the condition of multiple tanks in parallel operation, while avoiding mechanical wear caused by frequent start-stop of the solenoid valve c231.

[0046] Preferably, an electrically controlled three-way valve is installed between the accumulator and the return pipe 270.

[0047] In practical use, an electrically controlled three-way valve 281 is added between the accumulator 280 and the return pipe 270 to construct an intelligent pressure regulation hub. The electrically controlled three-way valve 281 switches the charging and discharging mode of the accumulator 280 in real time according to the gas pressure changes in the transfer pipe b230: when the system needs to be pressurized, the valve 281 opens the gas path from the accumulator 280 to the return pipe 270 to release the pre-stored high-pressure gas; when the gas source is sufficient, it switches to the charging path from the return pipe 270 to the accumulator 280, while isolating the outlet of the activated carbon filter tower 260. This not only achieves dynamic compensation for gas pressure fluctuations, but also avoids energy loss caused by frequent charging and discharging of the accumulator 280 through precise on / off switching. More importantly, it completely isolates the risk of high-pressure gas back impacting the filter tower 260, ensuring the stability of system pressure, extending the life of core equipment and improving energy utilization efficiency.

[0048] Working principle: When a pre-compression tank 10 completes particle pre-compression and needs to be depressurized, the electrically controlled valve a130 of its exhaust pipe 120 opens. The dust-laden gas with residual pressure in the tank flows into the transfer pipe a220 through the air inlet 222, and is directly transported to the cyclone separator 240 for centrifugal dust removal through a rigid connection pipeline. The separated particles fall into the collector 241. The preliminarily purified gas enters the condenser dehumidifier 250 for deep dehydration, and then passes through the activated carbon filter tower 260 to adsorb impurities and form clean gas. At this time, the electrically controlled valve a130 of the air inlet pipe 110 of the pre-compression tank 10 that needs to be pressurized opens, and the purified gas is injected into the transfer pipe b230 through the return pipe 270, and then transported to the target pre-compression tank 10 through the exhaust port 232. During the process, the accumulator 280 works in conjunction with the electrically controlled three-way valve 281 to dynamically adjust: when the pressure of the transfer pipe b230 is insufficient due to the synchronous pressurization of multiple tanks, the three-way valve 281 opens the gas release path of the accumulator 280 to instantly replenish the pressure; when the gas source is abundant, it switches to the charging path to temporarily store the excess gas in the accumulator 280, so as to achieve efficient recycling of pressure energy and dynamic balance of the system.

[0049] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A pre-compression tank for EPP particles with good pre-compression effect, characterized in that: Includes a pre-pressurization tank (10) and a residual pressure conversion mechanism (20) connected to the pre-pressurization tank (10) and realizing residual pressure utilization. The residual pressure conversion mechanism (20) includes a cabinet (210), a cyclone separator (240) installed in the cabinet (210) for intercepting residual particles in the gas discharged from the pre-pressurization tank (10), a condenser dehumidifier (250) installed in the cabinet (210) for dehumidifying the gas discharged from the cyclone separator (240), and an activated carbon filter tower (260) installed in the cabinet (210) for filtering the dehumidified gas.

2. The EPP particle pre-compression tank with good pre-compression effect according to claim 1, characterized in that: Each of the pre-pressurized tanks (10) is equipped with an air inlet pipe (110) and an exhaust pipe (120), and an electrically controlled valve a (130) is installed between the air inlet pipe (110), the exhaust pipe (120) and the pre-pressurized tank (10).

3. The EPP particle pre-compression tank with good pre-compression effect according to claim 1, characterized in that: The cabinet (210) is equipped with a transfer pipe a (220) and a transfer pipe b (230). The cabinet (210) is provided with several air inlets (222) that communicate with the transfer pipe a (220). An electric control valve b (221) is installed between the air inlet (222) and the transfer pipe a (220). The cabinet (210) is provided with several exhaust ports (232) that communicate with the transfer pipe b (230). An electric control valve c (231) is installed between the exhaust port (232) and the transfer pipe b (230).

4. The EPP particle pre-compression tank with good pre-compression effect according to claim 2, characterized in that: The exhaust pipe (120) is connected to and fixed to the air intake port (222), and the air intake pipe (110) is connected to and fixed to the exhaust port (232).

5. The EPP particle pre-compression tank with good pre-compression effect according to claim 3, characterized in that: The outlet of the transfer pipe a (220) is connected to and fixed to the inlet of the cyclone separator (240).

6. The EPP particle pre-compression tank with good pre-compression effect according to claim 1, characterized in that: The exhaust port of the cyclone separator (240) is connected to the condenser dehumidifier (250), and a collector (241) for collecting residual particles is installed at the bottom of the cyclone separator (240).

7. The EPP particle pre-compression tank with good pre-compression effect according to claim 1, characterized in that: A reflux pipe (270) is installed between the outlet of the activated carbon filter tower (260) and the inlet of the transfer pipe b (230), and an accumulator (280) is installed in the middle section of the reflux pipe (270).

8. The EPP particle pre-compression tank with good pre-compression effect according to claim 7, characterized in that: An electrically controlled three-way valve is installed between the accumulator and the return pipe (270).

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