PVC pipe production feeding system

Abstract

The utility model relates to the technical field of PVC (Polyvinyl Chloride) pipe production feeding, and aims to solve the problems that the existing stirring and mixing mode cannot accurately control the temperature rise and affects the ingredient absorption effect of resin. The utility model provides a PVC (polyvinyl chloride) pipe production feeding system which comprises a mixing tank, a feeding tank, a plurality of preheating units and a plurality of circulating units, a heat exchange assembly is arranged in the middle of the mixing tank; the mixing tank is divided into a feeding top and a discharging bottom by the heat exchange assembly; the plurality of preheating units are communicated with the feeding top; the preheating unit mixing tank and the circulating unit are respectively provided with a temperature detector; the feeding top is communicated with the discharging bottom through the plurality of circulating units; the feeding tank is communicated with the discharging bottom; according to the utility model, the pre-mixing unit is used for respectively pre-heating each ingredient, the original temperature in the tank is not influenced after the ingredients are fed into the mixing tank, the ingredients are promoted to be quickly and fully absorbed by resin, and the temperature range of the materials during mixing is accurately ensured.

Description

Technical Field

[0001] This utility model relates to the field of PVC pipe production material supply technology, and more specifically, to a PVC pipe production material supply system. Background Technology

[0002] The PVC pipe production feeding system is a core component of the PVC pipe production line. It is responsible for accurately mixing and conveying raw materials such as PVC resin, stabilizers, plasticizers, and fillers to the extruder according to the formula ratio, ensuring production continuity and product quality.

[0003] In existing technologies, raw materials are typically heated and mixed, then pre-buried in a storage tank before being quantitatively fed to the supply unit. For example, the patent with publication number CN221112785U discloses a PVC pipe production and processing system that specifically heats the raw materials in a hot pot, mixes them in a mixing pot, then buffers them in a storage tank, and finally quantitatively feeds them to the supply tank. However, in actual production, hot mixing usually involves gradient temperature mixing, such as 60-80℃: resin, stabilizer, and internal lubricant are pre-mixed to form a protective melt coating layer; 80-100℃: plasticizer is added in stages to ensure full resin absorption; 100-120℃: filler and external lubricant are added to improve dispersibility at high temperatures. Existing mixing methods cannot precisely control the range of temperature gradients, thus affecting the resin's absorption of plasticizers and the uniformity of the mixed materials.

[0004] Based on the above description, there is an urgent need for a material mixing system for PVC pipe production that can uniformly mix materials and improve product uniformity and quality. Utility Model Content

[0005] The purpose of this invention is to provide a PVC pipe production feeding system, which aims to solve the technical problems of existing mixing methods being unable to accurately control the range of gradient temperature rise, thus affecting the resin's absorption of plasticizers and the poor uniformity of the mixed materials.

[0006] The embodiments of this utility model are achieved through the following technical solutions:

[0007] A PVC pipe production feeding system includes a mixing tank and a feeding tank, multiple preheating units and multiple circulation units; a heat exchange component is provided in the middle of the mixing tank; the heat exchange component divides the mixing tank into a feeding top and a discharging bottom; multiple preheating units are all connected to the feeding top; both the preheating unit, the mixing tank and the circulation units are equipped with temperature detectors; the feeding top and the discharging bottom are connected through multiple circulation units; the feeding tank is connected to the discharging bottom.

[0008] Preferably, the preheating unit includes a preheating mixing vessel and a discharge pipe; the preheating mixing vessel is connected to the top of the feed through the discharge pipe.

[0009] Preferably, the discharge pipe is equipped with a flow control valve.

[0010] Preferably, the circulation unit includes a circulation pipe and a circulation pump; the top of the feed and the bottom of the discharge are connected through the circulation pipe; the circulation pump is located in the circulation pipe.

[0011] Preferably, the heat exchange assembly includes a pair of orifice plates; the pair of orifice plates are spaced apart in the middle of the mixing tank and divide the mixing tank into a feed chamber, a heat exchange chamber and a discharge chamber; the preheating unit is connected to the feed chamber; the feed chamber and the discharge chamber are connected through the circulation unit.

[0012] Preferably, the heat exchange assembly further includes multiple diversion pipes and multiple heat exchange tubes; the multiple diversion pipes are spaced apart between a pair of orifice plates; the feed end of the diversion pipe is connected to the feed chamber; the discharge end of the diversion pipe is connected to the feed tank; and the heat exchange tube is connected to the heat exchange chamber.

[0013] Preferably, the feed end of the diverter is provided with a defoaming component; the defoaming component is located inside the mixing tank.

[0014] Preferably, the defoaming component includes a mesh plate and multiple defoaming spikes; the mesh plate extends the multiple defoaming spikes toward the feed end of the diversion pipe.

[0015] The technical solution of this utility model embodiment has at least the following advantages and beneficial effects:

[0016] This invention uses multiple premixing units to preheat each ingredient, ensuring that the original temperature inside the mixing tank is not affected after the ingredients are fed into the mixing tank. This allows the ingredients to be quickly and fully absorbed by the resin, and also helps to accurately control the temperature range during mixing. The mixing tank is equipped with a PVC resin feed pipe, and multiple circulation units repeatedly draw the material into and out of the tank to achieve uniform mixing and heating. Furthermore, the addition of a temperature detector enables temperature monitoring of each unit in the system, allowing for more precise control of the system's heating temperature range. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the system of this utility model;

[0018] Figure 2 This is a schematic diagram of the mixing tank in this utility model;

[0019] Figure 3 for Figure 2 An enlarged schematic diagram of local structure A in the middle.

[0020] Icons: 1-Mixing tank, 2-Feeding tank, 3-Preheating unit, 31-Preheating mixing vessel, 32-Discharge pipe, 4-Circulation unit, 5-Heat exchange assembly, 51-Orifice plate, 52-Diverter pipe, 53-Heat exchange tube, 6-Flow control valve, 7-Defoaming assembly, 71-Mesh plate, 72-Defoaming spikes. Detailed Implementation

[0021] The specific implementation method is described below with reference to the accompanying drawings.

[0022] Example 1

[0023] Please see Figures 1 to 3 The present invention provides the following technical solution: a PVC pipe production feeding system, which is suitable for the situation of mixed feeding of materials in a batch.

[0024] Specifically, such as Figures 1 to 3 As shown, a PVC pipe production feeding system includes a mixing tank 1 and a feeding tank 2, multiple preheating units 3 and multiple circulation units 4; a heat exchange component 5 is provided in the middle of the mixing tank 1; the heat exchange component 5 divides the mixing tank 1 into a feeding top and a discharging bottom; multiple preheating units 3 are all connected to the feeding top; the preheating units 3, the mixing tank 1 and the circulation units 4 are all equipped with temperature detectors; the feeding top and the discharging bottom are connected through multiple circulation units 4; the feeding tank 2 is connected to the discharging bottom.

[0025] In this embodiment, each ingredient (such as stabilizer, plasticizer, filler, etc.) is preheated and stirred to a suitable temperature by multiple premixing units 3. The mixing tank 1 is equipped with a PVC resin feed pipe, and the material in the tank is repeatedly pumped in and out by multiple circulation units 4 to achieve mixing and heating. During the mixing and heating process, when the temperature rises to different temperature ranges, the preheated ingredients that are appropriate for the corresponding temperature range are pumped to the top of the feed of the mixing tank 1 and further circulated and heated by multiple circulation units 4. The temperature of the preheating unit 3, the mixing tank 1 and the circulation unit 4 are monitored by a temperature detector. After the material in the mixing tank 1 is kept at a constant and uniform temperature, it is pumped to the feeding tank 2 for buffering. In addition, the resin can also be preheated in the premixing unit 3 before being pumped to the mixing tank 1 to reduce the load on the heat exchange component 5.

[0026] In this embodiment, the temperature detector is a commonly used contact temperature detector or a non-contact temperature detector in the art; in this embodiment, the pumping is carried out using commonly used pneumatic diaphragm pumps, screw pumps, etc., depending on the form of the material (such as powder, granules, fluid, etc.).

[0027] Specifically, such as Figure 1 As shown, the preheating unit 3 includes a preheating mixing vessel 31 and a discharge pipe 32; the preheating mixing vessel 31 is connected to the top of the feed through the discharge pipe 32.

[0028] In this embodiment, the preheating stirring vessel 31 is heated by an electric heating tube or heat exchange tube and heat exchange jacket commonly used in the art.

[0029] Specifically, such as Figure 1 As shown, the discharge pipe 32 is equipped with a flow control valve 6.

[0030] Specifically, such as Figure 1 As shown, the circulation unit 4 includes a circulation pipe and a circulation pump; the top of the feed and the bottom of the discharge are connected through the circulation pipe; the circulation pump is located in the circulation pipe.

[0031] In this embodiment, the circulating pump can be selected from commonly used pneumatic diaphragm pumps, screw pumps, liquid pumps, etc., depending on the form of the material (such as powder, granules, fluid, etc.) for pumping.

[0032] Specifically, such as Figure 3 As shown, the heat exchange assembly 5 includes a pair of orifice plates 51; the pair of orifice plates 51 are spaced apart in the middle of the mixing tank 1 and divide the mixing tank 1 into a feeding chamber, a heat exchange chamber, and a discharge chamber; the preheating unit 3 is connected to the feeding chamber; the feeding chamber and the discharge chamber are connected through a circulation unit 4. The heat exchange assembly 5 also includes multiple diversion pipes 52 and multiple heat exchange tubes 53; the multiple diversion pipes 52 are spaced apart between the pair of orifice plates 51; the feeding end of the diversion pipe 52 is connected to the feeding chamber; the discharge end of the diversion pipe 52 is connected to the feeding tank 2; the heat exchange tubes 53 are connected to the heat exchange chamber.

[0033] In this embodiment, the material fed into the mixing tank 1 is dispersed by multiple diversion pipes 52, and the material in the tank is repeatedly drawn in and out by the circulation unit 4, thereby realizing a dynamic and continuous dispersion and mixing process, and the material in the dispersion process is heated by the heat exchange pipe 53.

[0034] In this embodiment, the heat exchange tube 53 can be replaced with different heat exchange media, such as steam, hot oil, hot water, etc., according to actual processing requirements.

[0035] Specifically, such as Figure 3 As shown, the feed end of the diversion pipe 52 is provided with a defoaming component 7; the defoaming component 7 is disposed inside the mixing tank 1. The defoaming component 7 includes a mesh plate 71 and multiple defoaming spikes 72; the mesh plate 71 extends multiple defoaming spikes 72 towards the feed end of the diversion pipe 52.

[0036] In this embodiment, the mesh plate 71 can screen the material to prevent blockage in the diversion pipe 52; the defoaming spikes 72 can defoam the material heated to liquid state to avoid affecting the discharge flow rate of the diversion pipe 52.

[0037] In this embodiment, all pipes installed in the system are insulated pipes, specifically rock wool insulated pipes, glass wool insulated pipes, or jacketed insulated pipes commonly used in the art.

Claims

1. A PVC pipe production feeding system, comprising a mixing tank (1) and a feeding tank (2), characterized in that: It also includes multiple preheating units (3) and multiple circulation units (4); a heat exchange component (5) is provided in the middle of the mixing tank (1); the heat exchange component (5) divides the mixing tank (1) into a feeding top and a discharging bottom; multiple preheating units (3) are all connected to the feeding top; the preheating unit (3), the mixing tank (1) and the circulation unit (4) are all equipped with temperature detectors; the feeding top and the discharging bottom are connected through multiple circulation units (4); the feeding tank (2) is connected to the discharging bottom.

2. The PVC pipe production feeding system according to claim 1, characterized in that: The preheating unit (3) includes a preheating stirring vessel (31) and a discharge pipe (32); the preheating stirring vessel (31) is connected to the top of the feed through the discharge pipe (32).

3. The PVC pipe production feeding system according to claim 2, characterized in that: The discharge pipe (32) is equipped with a flow control valve (6).

4. The PVC pipe production feeding system according to claim 2, characterized in that: The circulation unit (4) includes a circulation pipe and a circulation pump; the top of the feed and the bottom of the discharge are connected through the circulation pipe; the circulation pump is located in the circulation pipe.

5. The PVC pipe production feeding system according to any one of claims 1 to 4, characterized in that: The heat exchange assembly (5) includes a pair of orifice plates (51); the pair of orifice plates (51) are spaced apart in the middle of the mixing tank (1) and divide the mixing tank (1) into a feed chamber, a heat exchange chamber and a discharge chamber; the preheating unit (3) is connected to the feed chamber; the feed chamber and the discharge chamber are connected through the circulation unit (4).

6. The PVC pipe production feeding system according to claim 5, characterized in that: The heat exchange assembly (5) also includes multiple branch pipes (52) and multiple heat exchange tubes (53); the multiple branch pipes (52) are spaced apart between a pair of orifice plates (51); the feed end of the branch pipe (52) is connected to the feed chamber; the discharge end of the branch pipe (52) is connected to the feed tank (2); the heat exchange tube (53) is connected to the heat exchange chamber.

7. The PVC pipe production feeding system according to claim 6, characterized in that: The feed end of the diversion pipe (52) is provided with a defoaming component (7); the defoaming component (7) is located inside the mixing tank (1).

8. The PVC pipe production feeding system according to claim 7, characterized in that: The defoaming component (7) includes a mesh plate (71) and multiple defoaming spikes (72); the mesh plate (71) extends multiple defoaming spikes (72) towards the feed end of the diversion pipe (52).

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