Forming device for short-filament carbon fiber composite thermal insulation cylinder

Abstract

The utility model relates to a forming device for a short-filament carbon fiber composite thermal insulation cylinder, which comprises a crusher, a stirrer, a first centrifugal slurry pump, a slurry stirring barrel, a second centrifugal slurry pump, a water tank, a first vacuum pump, a glue tank, a glue spraying device, a second vacuum pump, a winding mechanism, a carbon felt unwinding mechanism and a third centrifugal slurry pump, a water outlet of the water pool is connected with a water inlet of the stirrer through a third centrifugal slurry pump, a discharging port of the stirrer is connected with a feeding port of the slurry stirring barrel through a first centrifugal slurry pump, and carbon felts are discharged through the carbon felt unwinding mechanism, sequentially pass through the upper portion of the water pool and the upper portion of the glue pool and then are wound up through the winding mechanism. A material stirred by the slurry stirring barrel is sprayed to the carbon felt above the water tank through the second centrifugal slurry pump, and the glue spraying device is connected with the glue tank and sprays glue to the carbon felt. According to the utility model, continuous production is realized by adopting an assembly line continuous guniting and glue spraying suction filtration mode, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rigid heat-insulating cylinders, and in particular relates to a forming device for a short-filament carbon fiber composite heat-insulating cylinder. Background Art

[0002] Carbon fiber insulation tubes are commonly used as thermal insulation layers for thermal equipment such as single crystal furnaces and deposition furnaces, and as insulation linings for high-temperature muffle furnaces. They are a common insulation structure for high-temperature working conditions. Due to its wide range of applications, continuous production of carbon fiber insulation felt generates a large amount of carbon fiber felt scraps during the cutting process. Recycling these scraps would generate significant economic value. Traditional insulation tube forming equipment uses complete, cut carbon felt brush rolls, resulting in high manufacturing costs, poor continuous production, and low efficiency. Utility Model Content

[0003] The utility model aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, the technical solution adopted by the present invention is: a forming device for a short-filament carbon fiber composite insulation cylinder, comprising a crusher, a mixer, a first centrifugal slurry pump, a slurry mixing barrel, a second centrifugal slurry pump, a water pool, a first vacuum pump, a glue pool, a glue spraying device, a second vacuum pump, a winding mechanism, a carbon felt unwinding mechanism and a third centrifugal slurry pump. The discharge port of the crusher is connected to the feed port of the mixer, the water outlet of the water pool is connected to the water inlet of the mixer through the third centrifugal slurry pump, the discharge port of the mixer is connected to the feed port of the slurry mixing barrel through the first centrifugal slurry pump, the carbon felt unwinding mechanism releases the carbon felt, and the carbon felt is wound up after passing over the water pool and the glue pool in turn. The material mixed by the slurry mixing barrel is sprayed onto the carbon felt above the water pool through the second centrifugal slurry pump, the glue spraying device is connected to the glue pool and the glue spraying device sprays glue onto the carbon felt.

[0005] The water pool is connected to a first vacuum pump.

[0006] The glue tank is connected to a second vacuum pump.

[0007] Compared with existing technologies, the present invention has the following advantages: It can recycle scraps from carbon felt production, significantly reducing production costs. The composite carbon fiber insulation tubes produced using the present invention have uniform thickness, a flexible and simple process, and can be flexibly and conveniently adjusted to meet customer needs for different dimensions, insulation performance, and strength. The present invention's continuous assembly line spraying, gluing, and filtration methods enable continuous production, improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural diagram of the present utility model. DETAILED DESCRIPTION

[0009] In order to make the purpose, technical solutions and advantages of this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0010] On the contrary, this application covers any alternatives, modifications, equivalents, and solutions made within the spirit and scope of this application as defined by the claims. Furthermore, to facilitate a better understanding of this application, certain specific details are described in detail below in the detailed description of this application. Those skilled in the art will be able to fully understand this application without these details.

[0011] See also Figure 1 The forming device for the short-filament carbon fiber composite insulation cylinder includes a crusher 1, a mixer 2, a first centrifugal slurry pump 3, a slurry mixing barrel 4, a second centrifugal slurry pump 12, a water tank 13, a first vacuum pump 5, a glue tank 6, a glue spraying device 7, a second vacuum pump 8, a winding mechanism 9, a carbon felt unwinding mechanism 10 and a third centrifugal slurry pump 11. The discharge port of the crusher 1 is connected to the feed port of the mixer 2, and the water outlet of the water tank 13 is connected to the feed port of the carbon felt unwinding mechanism 10 through the third centrifugal slurry pump 11. 1 is connected to the water inlet of the mixer 2, the discharge port of the mixer 2 is connected to the feed port of the slurry mixing barrel 4 through the first centrifugal slurry pump 3, the carbon felt unwinding mechanism 10 unwinds the carbon felt, and the carbon felt passes over the water pool 13 and the glue pool 6 in turn and is then reeled up by the reeling mechanism 9. The stirred material in the slurry mixing barrel 4 is sprayed onto the carbon felt above the water pool 13 through the second centrifugal slurry pump 3, and the glue spraying device 7 is connected to the glue pool 6 and the glue spraying device 7 sprays glue onto the carbon felt.

[0012] The water pool 13 is connected to a first vacuum pump 5 .

[0013] The glue tank 6 is connected to a second vacuum pump 8 .

[0014] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0015] The utility model comprises the following steps when working:

[0016] S1: Crush the discarded carbon fiber felt scraps, add water to the blender to make a carbon fiber slurry with a concentration of 30% to 40%, and pump the slurry into a slurry mixing tank;

[0017] S2: The carbon fiber slurry is pumped into the nozzle above the pool by a centrifugal pump and evenly sprayed on the carbon felt.

[0018] Perform filtration and sedimentation;

[0019] S3: The glue spraying device sprays the glue onto the composite felt, soaks it and presses the composite felt with a roller.

[0020] To the composite felt with appropriate glue content;

[0021] S4: rolling up the laminated composite felt, trimming the edges, and fixing the jacket mold;

[0022] S5: The composite felt tube containing the inner and outer molds enters the heating furnace for heating and curing, and then is demoulded and enters the continuous graphitization equipment for graphitization.

[0023] The utility model first breaks up carbon fiber felt scraps to obtain a fiber length of about 2 to 5 cm, mixes and adds water to form a carbon fiber slurry with a concentration of 30% to 40%, sprays the uniform slurry in a mixing barrel onto the finished carbon felt through a nozzle, and during filtration, the water in the slurry passes through the carbon felt into a water pool, and the carbon fibers are deposited on the surface of the carbon felt; in a glue spraying mechanism, the carbon fibers and the carbon felt are kept at an appropriate glue content by glue infiltration and pressing, and a uniform composite felt wet blank is obtained, the wet blank is rolled up and molded, and then dried and cured to form, the heating and curing molding temperature is 200-250°C, the heating and curing time is 30 minutes, and then the mold is cooled and demolded to enter the subsequent graphitization production line, so as to realize the continuous preparation of waste recycling wet molding.

[0024] Preferably, carbon felt is used in S2, and carbon cloth may also be used.

[0025] Preferably, in S2, in order to increase the filtering and sedimentation speed, a vacuum pump can be used to provide power to extract the filtered water from below.

[0026] Preferably, in S4, a vacuum pump can be used to provide power to extract the glue from below to increase the infiltration speed. Preferably, the curing heating furnace in S5 should be a tunnel furnace, and the length of the tunnel furnace heating zone and the conveying speed should match the heating treatment time.

[0027] The utility model crushes the scraps of discarded carbon fiber felt after cutting, adds water to slurry to obtain a carbon fiber slurry with a concentration of 30% to 40%, and pumps it into a slurry mixing barrel; the motor at the top of the mixing barrel drives the stirring shaft with fan blades to stir the slurry until it is uniform, and continues stirring to prevent carbon fiber sedimentation; the uniform slurry is pumped into the nozzle above the water pool by a centrifugal pump and evenly sprayed on the thin carbon felt; the thin carbon felt is strung together by two rollers at the head and tail, and passes through the entire set of equipment. The tail roller is wound to drag the entire thin carbon felt through various parts of the equipment to achieve continuity. A vacuum pump is used under the water pool to create a negative pressure environment. After the slurry is sprayed on the carbon felt, the negative pressure below draws away the moisture, leaving a uniform carbon fiber layer; the water filtered out of the water pool is recycled using a centrifugal pump. The thin carbon felt and carbon fiber layers then enter a glue tank, where glue is sprayed and bonded together. A vacuum pump creates negative pressure inside the glue tank, similar to the water tank structure, and the glue is pumped back into the nozzle for recycling. At the glue tank outlet, two rollers press the composite felt together, squeezing out any excess glue. The resulting composite felt blank, with uniform thickness, is wound up on a roller at the rear. The finished blank is cut, jacketed, and then heated and cured in a tunnel furnace. After curing and forming, it undergoes high-temperature graphitization to produce the finished carbon fiber insulation felt.

Claims

1. A molding device for a short-filament carbon fiber composite insulation cylinder, characterized in that: The invention comprises a crusher (1), a mixer (2), a first centrifugal slurry pump (3), a slurry mixing barrel (4), a second centrifugal slurry pump (12), a water tank (13), a first vacuum pump (5), a glue tank (6), a glue spraying device (7), a second vacuum pump (8), a winding mechanism (9), a carbon felt unwinding mechanism (10) and a third centrifugal slurry pump (11). The discharge port of the crusher (1) is connected to the feed port of the mixer (2), and the water outlet of the water tank (13) is connected to the mixer (2) through the third centrifugal slurry pump (11). ), the discharge port of the mixer (2) is connected to the feed port of the slurry mixing barrel (4) through the first centrifugal slurry pump (3), the carbon felt unwinding mechanism (10) releases the carbon felt, and the carbon felt passes over the water pool (13) and the glue pool (6) in turn and is then reeled up by the reeling mechanism (9), the material stirred by the slurry mixing barrel (4) is sprayed onto the carbon felt above the water pool (13) through the second centrifugal slurry pump (12), the glue spraying device (7) is connected to the glue pool (6), and the glue spraying device (7) sprays glue onto the carbon felt.

2. The molding device for a short-filament carbon fiber composite insulation cylinder according to claim 1, characterized in that: The water pool (13) is connected to a first vacuum pump (5).

3. The molding device for a short-filament carbon fiber composite insulation cylinder according to claim 1, characterized in that: The glue tank (6) is connected to a second vacuum pump (8).

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