Liquid seal tank barrel needle

Abstract

The utility model discloses a kind of liquid seal groove barrel needles, including barrel needle, barrel needle is installed on the lateral wall of liquid seal groove, one side of liquid seal groove is equipped with scraper condenser, the other side is equipped with first filter, the side of first filter is equipped with second filter, the side of second filter is equipped with centrifugal pump. The design application of barrel needle can more directly crush blocky residue, to ensure the unobstructed of pipeline, so that residue better leads to residue filter to achieve the effect of filtration;Barrel needle directly crushes block, saves a lot of time, reduces the operation difficulty, ensures that there is no residue accumulation and the phenomenon of pipeline blockage in liquid seal groove, makes the liquid level of liquid seal groove overall stable, flow tends to be stable, also prolongs the switching period of filter, avoids the possible misoperation of manual disassembly and cleaning at the same time, avoids the risk of vacuum system fluctuation, ensures the stability of polyester production.

Description

Technical Field

[0001] This utility model relates to a liquid seal groove needle. Background Technology

[0002] During the final polycondensation reaction, a small amount of polycondensate will inevitably be carried out through the scraper condenser to form a vacuum environment. After being sprayed and condensed in the scraper, it forms a residue, which enters the 17T01 liquid seal tank through the atmospheric leg. Finally, after being screened by the filter and screen, the residue is manually carried out of the system for recycling.

[0003] The residue is mostly filamentous, but occasionally a small amount of large, lumpy residue is produced and falls into the liquid seal tank after being flushed by the scraper. This lumpy residue accumulates at the bottom of the liquid seal tank and cannot be properly discharged or filtered, thus clogging the pipe connecting the bottom of the liquid seal tank to the 17F01 section of the residue filter. If manual removal of residue or unblocking of the pipe is not performed, the blockage can prevent ethylene glycol from seeping down, causing fluctuations in the liquid level of the liquid seal tank, which in turn leads to larger fluctuations in the pump outlet flow rate. This indirectly affects the spraying effect of the scraper, causing fluctuations in the vacuum level, ultimately affecting the viscosity of the product and reducing its quality. Utility Model Content

[0004] The main objective of this invention is to provide a liquid seal groove needle to solve the aforementioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a liquid seal tank needle, comprising a needle installed on the side wall of a liquid seal tank, a scraper condenser provided on one side of the liquid seal tank, a first filter provided on the other side, a second filter provided on one side of the first filter, and a centrifugal pump provided on one side of the second filter.

[0006] Based on the above scheme and as a preferred embodiment of the above scheme: the head end of the syringe extends into the liquid seal groove, and the head end of the syringe is provided with serrations.

[0007] Based on the above scheme and as a preferred embodiment of the above scheme: the cylinder needle includes a shell and an iron rod, the shell and the iron rod can rotate relative to each other, and the head end of the iron rod is provided with serrations.

[0008] Based on the above scheme and as a preferred embodiment of the above scheme: the length of the needle tube is 5m.

[0009] Based on the above scheme and as a preferred embodiment of the above scheme: the needle is made of metal material.

[0010] The beneficial effects of this invention are as follows: Compared to the traditional method of removing slag through an iron hook from the top opening of the liquid seal tank, where the hook can only remove filamentous residue to clear the pipes, it is ineffective when large lumps are present, failing to crush them and ensure unobstructed pipe flow. Furthermore, using a large air leg to backflush and "blast" lumps requires extreme caution; improper operation can easily disrupt the vacuum environment of the entire scraper system, directly affecting product quality and posing a significant risk. The needle-shaped design allows for more direct crushing of lumpy residue, ensuring unobstructed pipe flow and allowing the residue to reach the residue filter for filtration. Direct crushing of lumps by the needle saves considerable time, reduces operational difficulty, ensures no residue accumulation or pipe blockage in the liquid seal tank, stabilizes the overall liquid level and flow rate, extends the filter switching cycle, avoids potential errors associated with manual cleaning, mitigates the risk of vacuum system fluctuations, and guarantees stable polyester production. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. However, the specific implementation methods and embodiments described below are for illustrative purposes only and are not intended to limit the present invention.

[0013] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0014] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0015] 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0016] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0017] See attached diagram. Figure 1 In this embodiment, a liquid seal tank needle includes a needle 3, which is installed on the side wall of the liquid seal tank 2. A scraper condenser 1 is provided on one side of the liquid seal tank 2, and a first filter 4 is provided on the other side. The first filter is a residue filter. A second filter 5 is provided on one side of the first filter 4, and a centrifugal pump 6 is provided on one side of the second filter 5.

[0018] Preferably, the head end of the syringe needle 3 extends into the liquid seal groove 2, and the head end of the syringe needle 3 is provided with serrations.

[0019] Preferably, the cylinder needle 3 includes a housing and an iron rod, which are rotatable relative to each other, and the head end of the iron rod is provided with serrations.

[0020] Preferably, the length of the needle tube 3 is 5m.

[0021] Preferably, the needle 3 is made of metal.

[0022] During the final polycondensation reaction, a small amount of polycondensate is inevitably carried out during the process of creating a vacuum environment through the scraper condenser 17E01. After being sprayed and condensed in the scraper, it forms residue. The residue then enters the liquid seal tank 17T01 through the atmospheric leg. A large amount of residue falling into the liquid seal tank will cause the filter screen to become clogged and cause the ethylene glycol level in the liquid seal tank to rise continuously, leading to a high explosion. In general manual slag removal operations, filamentous residue is removed by inserting an iron hook into the bottom of the liquid seal tank chamber. However, blocky residue will inevitably sink directly into the bottom of the liquid seal tank through the atmospheric leg and accumulate. However, because the diameter is larger than the filter pipe below, it cannot be discharged normally and cannot be retrieved by the iron hook. This can cause the amount of ethylene glycol entering the liquid seal tank to exceed the outflow, leading to frequent high-explosions. Statistical data shows that high-explosion incidents can occur up to 5 times per day, requiring significant manpower and time costs. Furthermore, the instability of the liquid level in the liquid seal tank and the decrease in ethylene glycol spray flow rate due to blockages will disrupt the system's vacuum environment, thus affecting the viscosity fluctuation range of the product. The viscosity of the oil-free product will fluctuate within the range of 0.63±0.005 dl / g, resulting in a decline in product quality.

[0023] The use of the syringe needle 3 can improve this problem. The syringe needle 3 is inserted obliquely into the bottom of the liquid seal tank 2. By manually rotating the iron rod of the syringe needle, the lumpy residue accumulated at the bottom of the liquid seal tank 2 can be broken up. After being broken up, it enters the residue filter and can be manually removed and recycled. After the syringe needle 3 breaks up the large residue, the high-pressure alarm frequency of the liquid seal tank 2 can be reduced to once per day. At the same time, the unobstructed flow inside the pipeline reduces the fluctuation of the ethylene glycol flow rate at the pump outlet, and the spray volume of the scraper tends to be stable, making the vacuum environment of the system more stable and better. The viscosity of the oil-free liquid can be controlled between 0.63±0.02 dl / g, ensuring product quality.

[0024] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A liquid-sealed groove needle, characterized in that: The device includes a syringe needle, which is installed on the side wall of a liquid seal tank. A scraper condenser is provided on one side of the liquid seal tank, and a first filter is provided on the other side. A second filter is provided on one side of the first filter, and a centrifugal pump is provided on one side of the second filter.

2. The liquid seal groove needle according to claim 1, characterized in that: The tip of the syringe extends into the liquid seal groove, and the tip of the syringe is provided with serrations.

3. The liquid seal groove needle according to claim 2, characterized in that: The cylinder needle includes a housing and an iron rod, which are rotatable relative to each other, and the head end of the iron rod is provided with serrations.

4. The liquid seal groove needle according to claim 3, characterized in that: The length of the syringe is 5m.

5. A liquid-sealed groove needle according to claim 4, characterized in that: The syringe is made of metal.

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