Multi-screw raw material extruder for silicon core pipe production

Abstract

The utility model discloses a multi-screw raw material extruder for silicon core pipe production, which comprises an extruder main body, the upper end face of the extruder main body is provided with a sampling mechanism and a purifying mechanism, the sampling mechanism comprises an extension sleeve, a sampling pipe and a sampling piston, and the upper end face of the extruder main body is provided with a feeding hopper. An extrusion head is arranged at the end, away from the feeding hopper, of the extruder body, the extension sleeve is fixedly installed between the extrusion head and the extruder body, the sampling pipe is detachably installed on the upper end face of the extension sleeve and is in through connection with the extension sleeve, and the sampling piston is inserted into the sampling pipe and is movably and hermetically connected with the sampling pipe. The sampling mechanism is arranged on the upper end face of the extruder, real-time sampling in the production process can be achieved, the sample groove in the side face of the sampling piston can collect mixed material samples, an operator can directly observe the mixing uniformity of the samples through the sampling pipe made of tempered glass, and quality control in the blending modification process of silica gel and HDPE is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon core tube production, in particular to a multi-screw raw material extruder for silicon core tube production. Background Art

[0002] Silicone core tube is a special plastic pipe, which is mainly used for laying optical cables, electric cables and other communication lines. The raw materials need to be pretreated during the production process of silicon core tube, and silicone and HDPE are mixed and modified through a multi-screw extruder.

[0003] In the process of mixing and modification, higher mixing uniformity and dispersion effect are required. However, during the initial mixing of the multi-screw extruder, the temperature is not high enough and the materials are unevenly mixed. Since the multi-screw extruder lacks a sampling mechanism, the material state cannot be observed in the early stage. Usually, the initial material is excluded and treated as waste until the extruded product meets the requirements, and then the product is collected, resulting in a huge waste of resources and greatly increasing the production cost of silicon-core tubes. Therefore, a multi-screw raw material extruder for silicon-core tube production is needed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a multi-screw raw material extruder for silicon core tube production, which has the advantages of easy observation of material status and saving production costs, and solves the problem in the prior art that it is inconvenient to observe the material status of the screw extruder, resulting in serious waste of initial products.

[0005] To achieve the above object, the utility model provides the following technical solution: a multi-screw raw material extruder for silicon core tube production, comprising an extruder body, wherein a sampling mechanism and a purification mechanism are arranged on the upper end surface of the extruder body;

[0006] The sampling mechanism includes an extension sleeve, a sampling tube and a sampling piston. A feeding hopper is arranged on the upper end surface of the extruder body, an extrusion head is arranged at the end of the extruder body away from the feeding hopper, the extension sleeve is fixedly installed between the extrusion head and the extruder body, the sampling tube is detachably installed on the upper end surface of the extension sleeve and is connected with the extension sleeve, the sampling piston is inserted into the sampling tube and is movably sealed with the sampling tube, and a sample groove is arranged on the side of the sampling piston.

[0007] As a preferred multi-screw raw material extruder for silicon core tube production of the utility model, the purification mechanism includes a guide cover, an exhaust fan and an activated carbon adsorption plate, the guide cover is fixedly installed on the upper end of the sampling tube, the exhaust fan is fixedly installed on the end of the guide cover away from the sampling tube, and the activated carbon adsorption plate is installed between the exhaust fan and the sampling tube.

[0008] As a preferred multi-screw raw material extruder for silicon core tube production of the utility model, a slot is provided on the side of the guide cover, and the activated carbon adsorption plate is inserted into the slot and slidably connected to the guide cover.

[0009] As a preferred multi-screw raw material extruder for silicon core tube production of the utility model, the upper end surface of the sampling piston is provided with a pull rod, the pull rod is sleeved with a spring, and the sampling piston is elastically connected to the guide cover through the spring.

[0010] As a preferred embodiment of the multi-screw raw material extruder for producing silicon core tubes of the utility model, the sampling tube is made of tempered glass.

[0011] As a preferred multi-screw raw material extruder for silicon core tube production of the utility model, a limiting plate is arranged on the top of the guide cover, a slot is arranged on the limiting plate, and the pull rod is inserted into the slot and slidably connected thereto.

[0012] As a preferred multi-screw raw material extruder for silicon core tube production of the utility model, a limiting plate is arranged on the top of the guide cover, a slot is arranged on the limiting plate, and the pull rod is inserted into the slot and slidably connected thereto.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model can realize real-time sampling in the production process by arranging a sampling mechanism on the upper end face of the extruder. The sample slot on the side of the sampling piston can collect mixed material samples. Through the sampling tube made of tempered glass, the operator can directly observe the mixing uniformity of the samples. After the raw materials are evenly mixed, the discharge valve is opened for discharge, ensuring the quality control of the blending and modification process of silicone and HDPE, reducing the waste of raw materials, and enhancing the running stability of the equipment through the spring reset and limit plate locking functions, reducing the risk of internal material instability caused by the movement of the sampling piston, and helping to maintain the consistency of product quality.

[0015] 2. The utility model has a purification mechanism on the upper end face of the extruder. During the sampling process, volatile organic compounds can be guided to the activated carbon adsorption plate through the exhaust fan for effective adsorption and purification, reducing harmful gas emissions and improving the environmental performance of the equipment. The activated carbon adsorption plate adopts a sliding connection structure, which is convenient and quick to replace without disassembling the equipment; the sampling tube and the extension sleeve are threadedly connected and can be disassembled for cleaning, maintaining the transparency of the sampling tube. These designs improve the convenience and ease of maintenance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2This is a schematic diagram of the main structure of the extruder of the utility model;

[0018] Figure 3 This is a schematic diagram of the coordinated structure of the sampling mechanism and the purification mechanism of the utility model;

[0019] Figure 4 It is a front cross-sectional view of the sampling mechanism and the purification mechanism of the utility model in the coordinated state.

[0020] In the figure: 1. extruder body; 101. hopper; 102. extruder head; 2. sampling mechanism; 210. extension sleeve; 220. sampling tube; 230. sampling piston; 231. sample slot; 232. pull rod; 240. spring; 3. purification mechanism; 310. air guide cover; 311. slot; 312. limit plate; 313. slot; 320. exhaust fan; 330. activated carbon adsorption plate. DETAILED DESCRIPTION

[0021] See also Figure 1-Figure 4 , a multi-screw raw material extruder for silicon core tube production, comprising an extruder body 1, a sampling mechanism 2 and a purification mechanism 3 are arranged on the upper end surface of the extruder body 1;

[0022] The sampling mechanism 2 includes an extension sleeve 210, a sampling tube 220 and a sampling piston 230. The upper end surface of the extruder body 1 is provided with a feeding hopper 101, and the end of the extruder body 1 away from the feeding hopper 101 is provided with an extrusion head 102. The extension sleeve 210 is fixedly installed between the extrusion head 102 and the extruder body 1. The sampling tube 220 is detachably installed on the upper end surface of the extension sleeve 210 and is connected with the extension sleeve 210. The sampling piston 230 is inserted into the sampling tube 220 and is movably sealed and connected with the sampling tube 220. The side of the sampling piston 230 is provided with a sample groove 231.

[0023] When the extruder is in use, the pretreated material is fed into the extruder body 1 through the hopper 101, and the heating system of the extruder (existing technology) is started to make the material reach the temperature required for melt blending. After the material is preliminarily mixed in the extruder, the sampling piston 230 is gently pressed down to make it penetrate into the extruder and contact the material. As the sampling piston 230 moves downward, the material enters the sample slot 231, and then the sampling piston 230 is lifted up to observe the sampling tube 220 made of tempered glass. The mixing uniformity is judged by the state of the material in the sample slot 231. If necessary, the sampling piston 230 can be appropriately lifted up to make the sampling tube 220 leak out of the sample slot 231, and some samples are taken out for observation. During the sampling process, the exhaust fan 320 is started to ensure that the purification mechanism 3 is in working condition. When volatile organic compounds escape through the sampling tube 220, they will be guided to the activated carbon adsorption plate 330 by the guide cover 310 and discharged after adsorption purification.

[0024] Furthermore, the purification mechanism 3 includes a guide cover 310, an exhaust fan 320 and an activated carbon adsorption plate 330. The guide cover 310 is fixedly installed on the upper end of the sampling tube 220, the exhaust fan 320 is fixedly installed on the end of the guide cover 310 away from the sampling tube 220, and the activated carbon adsorption plate 330 is installed between the exhaust fan 320 and the sampling tube 220.

[0025] During the process of blending and modifying silica gel and HDPE, some volatile organic compounds will be released. These organic compounds will endanger the health of employees. It is inevitable that compound gases will evaporate from the sampling tube 220 during the sampling process. The exhaust fan 320 draws air so that the guide cover 310 absorbs the gas overflowing from the sampling tube 220, and the gas is discharged after being adsorbed and purified by the activated carbon adsorption plate 330, thereby improving the environmental performance of the equipment.

[0026] Furthermore, a slot 311 is provided on the side of the air guide cover 310 , and the activated carbon adsorption plate 330 is inserted into the slot 311 and is slidably connected to the air guide cover 310 .

[0027] The sliding connection structure facilitates quick replacement of the activated carbon adsorption plate 330 without disassembling the equipment, which greatly improves the convenience of the equipment.

[0028] Furthermore, a pull rod 232 is provided on the upper end surface of the sampling piston 230 , and a spring 240 is sleeved on the pull rod 232 . The sampling piston 230 is elastically connected to the flow guide cover 310 through the spring 240 .

[0029] After sampling is completed, the sampling piston 230 can rebound quickly under the reset action of the spring 240, thereby preventing the sampling piston 230 from falling under the action of material pressure and improving the stability of the equipment.

[0030] Furthermore, the sampling tube 220 is made of tempered glass.

[0031] The sampling tube 220 made of tempered glass is convenient for observing the state of the material in the sample tank 231, so as to judge whether the internal material is mixed evenly. After the observation is completed, the material can be sent back to the extruder body 1.

[0032] Furthermore, a limiting plate 312 is disposed on the top of the air deflector 310 , and a slot 313 is disposed on the limiting plate 312 , and the pull rod 232 is inserted into the slot 313 and slidably connected thereto.

[0033] The pull rod 232 is rotated into the slot 313 to fix the sampling piston 230 to prevent the equipment from shaking during production, thereby preventing bubbles from being generated in the internal materials and affecting product quality.

[0034] Furthermore, an outer end surface of the bottom of the sampling tube 220 is provided with an external thread, and the sampling tube 220 is threadedly connected to the extension sleeve 210 .

[0035] The threaded connection of the sampling tube 220 allows it to be disassembled for cleaning, thereby maintaining a high degree of transparency of the sampling tube 220 and facilitating observation of the material state.

[0036] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-screw raw material extruder for producing silicon core tubes, comprising an extruder body (1), characterized in that: The upper end surface of the extruder body (1) is provided with a sampling mechanism (2) and a purification mechanism (3); The sampling mechanism (2) comprises an extension sleeve (210), a sampling tube (220) and a sampling piston (230); the upper end surface of the extruder body (1) is provided with a hopper (101); the end of the extruder body (1) away from the hopper (101) is provided with an extrusion head (102); the extension sleeve (210) is fixedly mounted between the extrusion head (102) and the extruder body (1); the sampling tube (220) is detachably mounted on the upper end surface of the extension sleeve (210) and is connected to the extension sleeve (210); the sampling piston (230) is inserted into the sampling tube (220) and is movably sealed therewith; and a sample groove (231) is provided on the side of the sampling piston (230).

2. A multi-screw raw material extruder for silicon core tube production according to claim 1, characterized in that: The purification mechanism (3) comprises a flow guide cover (310), an exhaust fan (320) and an activated carbon adsorption plate (330); the flow guide cover (310) is fixedly mounted on the upper end of the sampling tube (220); the exhaust fan (320) is fixedly mounted on the end of the flow guide cover (310) away from the sampling tube (220); and the activated carbon adsorption plate (330) is mounted between the exhaust fan (320) and the sampling tube (220).

3. A multi-screw raw material extruder for silicon core tube production according to claim 2, characterized in that: A slot (311) is provided on the side of the air guide cover (310), and the activated carbon adsorption plate (330) is inserted into the slot (311) and is slidably connected to the air guide cover (310).

4. A multi-screw raw material extruder for producing silicon core tubes according to claim 3, characterized in that: The upper end surface of the sampling piston (230) is provided with a pull rod (232), and a spring (240) is sleeved on the pull rod (232). The sampling piston (230) and the flow guide cover (310) are elastically connected via the spring (240).

5. A multi-screw raw material extruder for producing silicon core tubes according to claim 4, characterized in that: The sampling tube (220) is made of tempered glass.

6. A multi-screw raw material extruder for producing silicon core tubes according to claim 5, characterized in that: A limiting plate (312) is provided on the top of the air deflector (310), a slot (313) is provided on the limiting plate (312), and the pull rod (232) is inserted into the slot (313) and slidably connected thereto.

7. The multi-screw raw material extruder for producing silicon core tubes according to claim 1, characterized in that: The bottom outer end surface of the sampling tube (220) is provided with an external thread, and the sampling tube (220) is threadedly connected to the extension sleeve (210).

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