Improved device of cross-linking process treatment furnace

Abstract

The utility model discloses an improved device of a cross-linking process treatment furnace. The improved device comprises a heat treatment chamber, a loading and unloading area and a material carrying vehicle, the heat treatment chamber is internally provided with at least three shaft mounting areas for mounting the wire supporting shafts, each wire supporting shaft is provided with a plurality of coils of cross-linked wires, each shaft mounting area is at least correspondingly provided with two air inlets, and the heat treatment chamber is internally provided with a transverse sliding rail and a longitudinal sliding rail which are perpendicular to each other; the material carrying trolley is provided with longitudinal sliding wheels and transverse sliding wheels, the longitudinal sliding wheels and the longitudinal sliding rails slide in a matched mode, and the transverse sliding wheels and the transverse sliding rails slide in a matched mode. According to the utility model, the original only one inert gas inlet pipeline is upgraded to a plurality of inert gas inlet pipelines, so that the flow velocity of the inert atmosphere can be reduced and the damage to the precursor caused by too high gas flow velocity can be reduced under the condition of keeping the total flow of the original inert atmosphere unchanged; and the gas inlet positions are uniformly distributed, so that the temperature control property and the gas uniformity of the heat treatment furnace can be better maintained, and the quality of cross-linked wires is more excellent.

Description

Technical Field

[0001] The utility model relates to the technical field of cross-linking process treatment equipment, in particular to an improved device for a cross-linking process treatment furnace. Background Art

[0002] The cross-linking process (non-melting treatment) for the production of continuous silicon nitride and continuous silicon carbide fibers can be divided into two steps: electron beam cross-linking and heat treatment.

[0003] The cross-linking heat treatment furnace currently usually adopts a single-axis heat treatment method. The bottleneck in the production of continuous silicon nitride and continuous silicon carbide fibers lies in the cross-linking process. Through the analysis of the process time of the cross-linking system production process and steps, the cross-linking takes the most time in the step of the cross-linking heat treatment furnace, and the time consumption is serious.

[0004] As Figure 1 shown, the single-axis heat treatment equipment has only one inert gas inlet device (air inlet hole c). Since the single-axis heat treatment equipment usually needs to process 6 cylinders of raw filaments d at a time, the gas flow rate and inlet direction at the inert gas inlet have a greater impact on the temperature stability in the heat treatment zone, and have a greater impact on the quality of the fiber raw filaments.

[0005] In addition, the current single-axis cross-linking pyrolysis furnace is imported from abroad, and exports to China are currently prohibited.

[0006] In view of this, the inventor of this case conducted in-depth research, and thus this case came into being. Content of the Utility Model

[0007] The purpose of the utility model is to provide an improved device for a cross-linking process treatment furnace that can improve the cross-linking efficiency.

[0008] In order to achieve the above object, the technical solution of the utility model is:

[0009] An improved device for a cross-linking process treatment furnace includes a heat treatment chamber, a loading and unloading area arranged on the front side of the heat treatment chamber, and a handling cart for cooperating with loading and unloading.

[0010] Taking the front-back direction of the heat treatment chamber as the longitudinal direction and the direction perpendicular to the longitudinal direction in the horizontal plane as the transverse direction, at least three shaft installation areas for installing wire supporting shafts are arranged side by side and spaced apart in the transverse direction inside the heat treatment chamber. A plurality of coils of cross-linked wires are installed on the wire supporting shafts. Each wire supporting shaft is respectively installed in each shaft installation area along the longitudinal direction. At least two air inlets are respectively arranged corresponding to each shaft installation area. Each air inlet is respectively opened on the rear side wall of the heat treatment chamber. Each air inlet is respectively connected with a vacuum pump through an air inlet pipe, and the heat treatment chamber is connected and communicated with the air inlet pipe;

[0011] Inside the heat treatment chamber, there are a transverse sliding track and a longitudinal sliding track which are perpendicular to each other. The longitudinal sliding track extends to the loading and unloading area, and the transverse sliding track extends to the corresponding shaft installation areas. The longitudinal sliding track is arranged corresponding to the shaft installation area in the middle.

[0012] The material handling cart is provided with a support outer frame and a support inner frame. A concave position for placing the cross-linked filaments strung on the support wire shaft is formed at the top of the support outer frame. Longitudinal sliding wheels are provided at the bottom of the support outer frame, and the longitudinal sliding wheels are slidably matched with the longitudinal sliding track. The support inner frame is installed on the support outer frame in a relatively liftable manner through a lifting mechanism. Transverse sliding wheels are provided at the bottom of the support inner frame, and the transverse sliding wheels are slidably matched with the transverse sliding track.

[0013] Further, there are three shaft installation areas evenly arranged in the transverse direction inside the heat treatment chamber. Six air inlets are opened on the rear side wall of the heat treatment chamber. Two air inlets arranged vertically are respectively provided corresponding to each shaft installation area. The heat treatment chamber respectively forms heat treatment intervals corresponding to each cross-linked filament one by one. Heaters and separate temperature monitors are respectively provided corresponding to each heat treatment interval.

[0014] Further, the lifting mechanism is a cylinder driving mechanism. The cylinder driving mechanism includes a cylinder body and a telescopic rod. The cylinder body is installed on the support outer frame, and the telescopic rod is installed on the support inner frame.

[0015] The improved device of a cross-linking process treatment furnace of the present utility model has the following beneficial effects: 1. Upgrade the originally single inert gas inlet pipe to a plurality of pipes, which are more evenly distributed on the shaft heat treatment equipment. Under the condition of relatively maintaining the total flow rate of the original inert atmosphere unchanged, the flow rate of the inert atmosphere can be reduced, and the damage to the raw filaments caused by too fast gas flow rate can be reduced. The uniform distribution of the air inlet positions can also better maintain the temperature control and gas uniformity of the heat treatment furnace during the heating, heat preservation and annealing stages of the cross-linking heat treatment process. After the upgrade of the air inlet pipe is completed, the temperature stability of each heat treatment interval is qualified, and the quality of the cross-linked filaments is more excellent.

[0016] 2. The multi-shaft simultaneous heat treatment of the heating furnace replaces the original single-shaft heat treatment, shortens the cross-linking heat treatment workstations and working hours. After the new upgrade, the cross-linking efficiency can be improved and the cost of the cross-linking process can be reduced. Taking three shafts as an example, the production working hours of each workstation before and after the upgrade of the cross-linking process heat treatment furnace are reduced from 61h to 31h.

[0017] 3. After upgrading the multi-axis heat treatment equipment, the number of raw filaments for one-time heat treatment becomes multiple times that of the original single axis. However, the heat treatment time remains unchanged. Taking the three-axis as an example, the energy consumption of this process is saved by half, the production efficiency is greatly improved, the quality of cross-linked filaments is more excellent, and the labor cost is also reduced accordingly.

[0018] 4. At present, "domestication" and "self-control" have become the main themes of the development of China's science and technology industry. The self-control of high-end scientific instrument equipment has become the key to the construction of an innovative country. With the development of domestic equipment in recent years, the existing single-axis cross-linking equipment has been improved with domestic equipment, the production process has been optimized, and the production efficiency has been increased to achieve the purpose of equipment self-control and cost reduction.

[0019] 5. The design of the internal horizontal and vertical tracks in the heat treatment chamber, combined with the use of the material handling cart, enables the operation of loading and unloading multi-axis cross-linked filaments, which is simple and convenient. Brief Description of the Drawings

[0020] Figure 1 is a schematic structural diagram (top view and side view) of a single-axis cross-linking heat treatment furnace in the background technology;

[0021] Figure 2 is a simplified diagram of the heat treatment chamber and the loading and unloading area in the present invention;

[0022] Figure 3 is a schematic structural diagram (top view and side view) of a three-axis cross-linking heat treatment furnace in the present invention;

[0023] Figure 4 is a schematic structural diagram of the material handling cart sliding along the longitudinal sliding track in the present invention;

[0024] Figure 5 is a schematic structural diagram of the material handling cart sliding along the horizontal sliding track in the present invention.

[0025] In the figure

[0026] Cross-linked filament a; heat treatment chamber 1; shaft installation area 11; air inlet 12; loading and unloading area 2; material handling cart 3; support outer frame 31; longitudinal sliding wheel 311; support inner frame 32; transverse sliding wheel 321; filament support shaft 4; horizontal sliding track 51; longitudinal sliding track 52. Detailed Embodiments

[0027] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0028] An improved device for a cross-linking process treatment furnace of the present invention, as Figures 2 to 5 shown, includes a heat treatment chamber 1, a loading and unloading area 2 provided on the front side of the heat treatment chamber 1, and a material handling cart 3 for cooperating with loading and unloading.

[0029] Inside the heat treatment chamber 1, there are at least three shaft installation areas 11. Each shaft installation area 11 is correspondingly installed with a wire supporting shaft 4, and six coils of cross-linked wire a are respectively installed on each wire supporting shaft 4. Each wire supporting shaft 4 is respectively installed in each shaft installation area 11 along the front-back direction. Each shaft installation area 11 is at least correspondingly provided with two air inlets 12, that is, at least six air inlets 12 are opened on the rear side wall of the heat treatment chamber 1. Each air inlet 12 is respectively connected to a vacuum pump through an air inlet pipe. The heat treatment chamber 1 is connected and communicated with the air inlet pipe. In the present utility model, a power area can also be provided at the rear side of the heat treatment chamber 1 according to actual needs, and the vacuum pump and the air inlet pipe can be installed in the power area. The heat treatment chamber 1 is respectively provided with a heater and a separate temperature monitor corresponding to each cross-linked wire a. In this embodiment, the front-back direction of the heat treatment chamber 1 is taken as the longitudinal direction, and the direction perpendicular to the longitudinal direction in the horizontal plane is taken as the transverse direction. Inside the heat treatment chamber 1, there are three shaft installation areas 11 arranged and spaced evenly along the transverse direction. Each shaft installation area 11 is respectively arranged along the front-back direction (i.e., the longitudinal direction). Six air inlets 12 are opened on the rear side wall of the heat treatment chamber 1. Each shaft installation area 11 is respectively correspondingly provided with two air inlets 12 arranged vertically. The heat treatment chamber 1 respectively correspondingly forms a heat treatment interval for each cross-linked wire a, that is, a total of 18 heat treatment intervals are provided in this embodiment (three wire supporting shafts 4, and each wire supporting shaft 4 respectively has six coils of cross-linked wire a). Each heat treatment interval is respectively provided with a heater and a separate temperature monitor (specifically, such as a temperature precision controller and a thermocouple).

[0030] Reference Figure 4 and Figure 5 As shown, inside the heat treatment chamber 1, there are a horizontally sliding track 51 and a longitudinally sliding track 52 arranged perpendicularly. The horizontally sliding track 51 is located at a position relatively lower than the height where the longitudinally sliding track 52 is located. The horizontally sliding track 51 extends to correspond to the three shaft installation areas 11, and the longitudinally sliding track 52 is arranged corresponding to the middle shaft installation area 11. The longitudinally sliding track 52 extends to the loading and unloading area 2.

[0031] The front side wall of the heat treatment chamber 1 is provided with a feed inlet, and the feed inlet is opened corresponding to the longitudinally sliding track 52. The opening of the feed inlet can be designed and adjusted according to actual needs. For example, in order to facilitate the observation of loading and unloading, the feed inlet can extend to the shaft installation areas 11 on both sides of the longitudinally sliding track 52.

[0032] As Figure 4 and Figure 5As shown in the figure, the material handling cart 3 is provided with a support outer frame 31 and a support inner frame 32. A concave position for placing the cross-linked filaments a strung on the support shaft 4 is formed at the top of the support outer frame 31. A longitudinal sliding wheel 311 is installed at the bottom of the support outer frame 31. The longitudinal sliding wheel 311 is slidably engaged with the longitudinal sliding track 52. The support inner frame 32 is installed on the support outer frame 31 in a relatively liftable manner through a lifting mechanism. A transverse sliding wheel 321 is installed at the bottom of the support inner frame 32. The transverse sliding wheel 321 is slidably engaged with the transverse sliding track 51. It should be noted that in the present invention, in addition to using the material handling cart 3, other conventional material handling and moving structures can also be used to convey the cross-linked filaments a (strung on the support shaft 4) to the corresponding shaft installation area 11 for installation.

[0033] In the present invention, the lifting mechanism is a driving mechanism such as a cylinder, which can realize the relative lifting between the support outer frame 31 and the support inner frame 32. The lifting control of the material handling cart 3 can be controlled by a conventional control system in the industry, which will not be elaborated here, as long as the corresponding control functions can be realized. In this embodiment, the lifting mechanism is a cylinder device, including a cylinder body and a telescopic rod. The cylinder body is installed on the support outer frame 31, and the telescopic rod is installed on the support inner frame 32. During feeding, first support and limit the longitudinal sliding wheel 311 of the material handling cart 3 on the longitudinal sliding track 52. Six rolls of cross-linked filaments a are strung on the support shaft 4, and then the strung cross-linked filaments a are transported to the concave position of the support outer frame 31. The concave position plays a role in limiting the cross-linked filaments a, which is convenient for the movement of the material handling cart 3. Then control the material handling cart 3 to move from the loading and unloading area 2 along the longitudinal sliding track 52 to the inside of the heat treatment chamber 1, and then control the support inner frame 32 (i.e., the transverse sliding wheel 321) of the material handling cart 3 to move downward through the lifting mechanism to abut against the transverse sliding track 51, and then further lift up the support outer frame 31 until the longitudinal sliding wheel 311 is disengaged from the limit of the longitudinal sliding track 52. Then control the material handling cart 3 to slide along the transverse sliding track 51 to the position of the corresponding shaft installation area 11, and finally complete the installation of the support shaft 4. During feeding, the installation of the shaft installation areas 11 at both ends of the transverse sliding track 51 is preferably carried out first, and finally the installation of the shaft installation area 11 in the middle of the transverse sliding track 51 is carried out.

[0034] Through the new upgrade of the cross-linking heating furnace equipment, the present invention adopts three-axis simultaneous heat treatment. Compared with the existing single-axis heat treatment method, the monthly production batches can be increased by 40 batches, and the monthly production efficiency can be increased by 62.5%. Without affecting the product quality, a new cross-linking heating furnace equipment: a three-axis simultaneous heat treatment scheme is designed to achieve the goal of reducing the unit cost of fibers by 20% in the final time cross-linking process.

[0035] An improved device for a cross-linking process treatment furnace of the utility model has the following beneficial effects: 1. Upgrade the original single inert gas inlet pipe to six, which are evenly distributed on the shaft heat treatment equipment. Without changing the total flow rate of the original inert atmosphere, the flow rate of the inert atmosphere can be reduced, and the damage to the raw filaments caused by too fast gas flow rate can be reduced; the uniform distribution of the inlet positions can also better maintain the temperature control and gas uniformity of the heat treatment furnace during the heating, heat preservation, and annealing stages of the cross-linking heat treatment process. After the upgrade of the inlet pipes is completed, the temperature stability of each (18) heat treatment interval is qualified, and the quality of the cross-linked filaments is more excellent.

[0036] 2. Replace the original single-axis heat treatment with three-axis simultaneous heat treatment in the heating furnace, shorten the working hours of the cross-linking heat treatment station, and after the new upgrade, the cross-linking efficiency can be improved and the cost of the cross-linking process can be reduced. The production working hours of each station before and after the upgrade of the cross-linking process heat treatment furnace are reduced from 61h to 31h.

[0037] 3. After upgrading the three-axis heat treatment equipment, the number of primary raw filaments at one time becomes three times that of the original single axis, but the time and dosage remain unchanged. The energy consumption of this process is saved by half, the production efficiency is greatly improved, the quality of the cross-linked filaments is more excellent, and the labor cost is also reduced accordingly.

[0038] 4. At present, "domestication" and "self-control" have become the main themes of the development of China's science and technology industry. The self-control of high-end scientific instrument equipment has become the key to the construction of an innovative country. With the development of domestic equipment in recent years, the existing single-axis cross-linking equipment is improved with domestic equipment, the product production process is optimized, and the production efficiency is increased to achieve the purpose of equipment self-control and cost reduction.

[0039] 5. The design of the internal horizontal and vertical tracks of the heat treatment chamber 1, combined with the use of the material handling cart 3, enables the operation of loading and unloading multi-axis cross-linked filaments, which is simple and convenient.

[0040] The above embodiments and drawings do not limit the product form and style of the utility model. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the utility model.

Claims

1. An improved device for a cross-linking process furnace, characterized in that: It includes a heat treatment chamber, a loading and unloading area arranged at the front side of the heat treatment chamber, and a material handling vehicle for cooperating with the loading and unloading; The front-to-back direction of the heat treatment chamber is the longitudinal direction, and the direction perpendicular to the longitudinal direction in the horizontal plane is the transverse direction. The interior of the heat treatment chamber is provided with at least three shaft installation areas for installing the wire support shafts arranged side by side and spaced apart in the transverse direction. A plurality of cross-linked wires are installed on the wire support shafts. Each of the wire support shafts is installed one by one in the longitudinal direction on each of the shaft installation areas. Each of the shaft installation areas is provided with at least two air inlets. Each of the air inlets is opened on the rear side wall of the heat treatment chamber. Each of the air inlets is connected to a vacuum pump through an air inlet pipe. The heat treatment chamber is connected to the air inlet pipe. The interior of the heat treatment chamber is provided with a transverse sliding track and a longitudinal sliding track which are arranged perpendicular to each other, the longitudinal sliding track extends to the loading and unloading area, the transverse sliding track extends to the shaft installation areas corresponding to each of the shaft installation areas, and the longitudinal sliding track is arranged corresponding to the shaft installation area located in the middle; The material handling vehicle is provided with an outer support frame and an inner support frame. A recess for placing the cross-linked wire strung on the wire support shaft is formed on the top of the outer support frame. A longitudinal sliding wheel is provided at the bottom of the outer support frame. The longitudinal sliding wheel slides in cooperation with the longitudinal sliding track. The inner support frame is installed on the outer support frame through a lifting mechanism in a relatively lifting and lowering manner. A transverse sliding wheel is provided at the bottom of the inner support frame. The transverse sliding wheel slides in cooperation with the transverse sliding track.

2. The improved device of a cross-linking process furnace according to claim 1, characterized in that: The interior of the heat treatment chamber is provided with three shaft installation areas evenly arranged in the transverse direction, and six air inlets are opened on the rear side wall of the heat treatment chamber. Each of the shaft installation areas is respectively provided with two air inlets arranged in an upper and lower manner. The heat treatment chamber forms a heat treatment zone corresponding to each cross-linked wire, and each of the heat treatment zones is respectively provided with a heater and a separate temperature monitor.

3. The improved device of a cross-linking process furnace according to claim 2, characterized in that: The lifting mechanism is a cylinder drive mechanism, which includes a cylinder body and a telescopic rod. The cylinder body is installed on the supporting outer frame, and the telescopic rod is installed on the supporting inner frame.

Images