A processing device for processing nuclear power cable insulation layer material

Abstract

The application discloses a processing equipment for nuclear power cable insulation layer material processing, which comprises an extrusion assembly, a heating assembly is installed on the extrusion assembly, a melting assembly which is in communication with the heating assembly to form a circulating heating is arranged above the extrusion assembly, a feeding assembly for guiding uniform mixing of multiple types of materials is installed on the top of the melting assembly, the feeding assembly comprises a feeding cylinder which is installed above the melting assembly, a conical hopper is installed at the bottom of the feeding cylinder, and at least three spiral blades which are staggered and used for guiding different materials to move downward along a spiral track are installed in the feeding cylinder. In the application, each material required by the nuclear power cable insulation layer is put into the processing equipment in the form of multiple cross mixing, so that the materials are fully mixed, and in addition, the continuous flow state of the materials along the spiral structure path is broken by using a plurality of supporting strip structures, so that the materials are dispersed and rearranged, and the uniformity of the overall mixing of the multiple insulation materials is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of insulation material processing, in particular to a nuclear power cable insulation layer material processing treatment equipment. BACKGROUND

[0002] The nuclear power cable generally needs to go through the processing steps of melting extrusion, cooling solidification and straight cutting during processing, wherein the melting extrusion is mainly to melt the raw materials through heating and pressure, and form uniform molten materials under the action of the screw of the extruder. The materials required for the nuclear power cable insulation layer are usually composed of rubber, plastic and additives and other types of materials. When the materials are put into the nuclear power cable insulation layer material processing treatment equipment, the differences in material density and particle size of the materials lead to different motion states and residence times of the materials at the equipment feed inlet, thereby causing uneven mixing, which easily affects the uniformity of the subsequent material melting, thereby causing the mechanical strength and elasticity of the cable insulation layer to be inconsistent, which may cause local weakness or excessive hardness, affecting the durability and service life of the cable. SUMMARY

[0003] In view of the deficiencies of the prior art, the purpose of the present application is to provide a nuclear power cable insulation layer material processing treatment equipment to solve the problem of inconsistent mechanical strength of the cable insulation layer caused by uneven feeding during the processing of the cable insulation layer material.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a nuclear power cable insulation layer material processing treatment equipment, comprising an extrusion assembly, a heating assembly is installed on the extrusion assembly, a melting assembly is arranged above the extrusion assembly and is in communication with the heating assembly to form a circulating heating, and a feeding assembly for guiding uniform mixing of multiple types of materials is installed on the top of the melting assembly.

[0005] The feeding assembly comprises a feeding cylinder installed above the melting assembly, a conical hopper is installed at the bottom of the feeding cylinder, at least three spiral blades for guiding the downward movement of different materials along a spiral trajectory are installed inside the feeding cylinder, a plurality of notches for the mutual intersection of multiple materials are formed on the spiral blades, the notches on the three spiral blades are arranged in a staggered manner, and an inner groove for accurately flowing the materials within the spiral trajectory range is formed on the upper surface of the spiral blade.

[0006] The top of the feeding cylinder is provided with a feeding pipe opening consistent with the number of spiral blades and located above the head end of the spiral blade.

[0007] As a preferred, the extrusion assembly comprises a separate cavity type extrusion cylinder, and a seat plate is installed at the bottom of the separate cavity type extrusion cylinder.

[0008] The heating assembly comprises an annular liquid storage structure installed on one side of the separate-chamber extrusion barrel, an electric heating structure is installed in the annular liquid storage structure, and a communication pipe extending into the inside of the separate-chamber extrusion barrel is installed in the annular liquid storage structure.

[0009] Preferably, a support frame is installed on the top of the seat frame plate, a circulating pump is installed on the support frame, a suction pipe connected with the inner cavity of the separate-chamber extrusion barrel is installed on the input end of the circulating pump, and a conveying pipe extending into the inside of the melting assembly is connected with the output end of the circulating pump.

[0010] Preferably, the melting assembly comprises a melting barrel arranged above the separate-chamber extrusion barrel, an inner cavity layer connected with the conveying pipe is arranged on the wall of the melting barrel, and a straight guide pipe is arranged between the inner cavity layer and the annular liquid storage structure.

[0011] Preferably, an axle structure is rotatably installed in the inside of the melting barrel, a spiral structure is installed on the axle structure, a motor for driving the axle structure to rotate at a constant speed is installed on one side of the melting barrel, and a plurality of supporting strip structures for increasing the contact time of the material with the inner wall of the melting barrel are installed on the spiral structure.

[0012] Preferably, the supporting strip structure comprises a horizontal strip installed on the spiral structure, an inclined strip abutting against the inner wall of the melting barrel is installed on the horizontal strip, and an arc-shaped groove extending to the inclined strip is formed in the horizontal strip.

[0013] The angle difference between the inclined strip and the horizontal strip on the side of the arc-shaped groove is at least 20°.

[0014] Preferably, a spiral shaft core penetrating through the annular liquid storage structure is installed in the inside of the separate-chamber extrusion barrel, a transmission structure is installed between the spiral shaft core and the axle structure, and a discharging channel for connecting the melting barrel is installed on one side of the top of the separate-chamber extrusion barrel.

[0015] Preferably, the discharging channel comprises a pipe body extending into the inside of the separate-chamber extrusion barrel and the inside of the melting barrel, a cylindrical pipe connected with the pipe body through a flange, and a filter plate installed in the inside of the cylindrical pipe.

[0016] By means of the above technical scheme, the processing equipment for processing nuclear power cable insulation layer material provided by the application has at least the following beneficial effects:

[0017] 1. In the application, a plurality of materials flow downward along the spiral tracks of the plurality of spiral pieces, and in the process, the slots arranged in a staggered manner on each spiral piece enable the materials required for the nuclear power cable insulation layer to be mixed multiple times, thereby achieving sufficient mixing and feeding of the required materials, ensuring the uniformity and efficiency of the material mixing, and effectively reducing the material accumulation and blockage by optimizing the flow state of the materials.

[0018] 2、The application can form a circulation loop with the heating assembly and the inner cavity layer in the wall of the melting cylinder and the cavity of the inner wall of the cavity type extrusion cylinder, and continuously heat the circulated liquid with the electric heating structure, so as to ensure the melting of the insulation granular material required by the nuclear cable insulation layer in the melting cylinder and the heat preservation of the material after melting in the extrusion cylinder.

[0019] 3、The application drives the spiral structure to rotate, promotes the insulation material to advance along the spiral direction of the blade, and breaks the continuous flow state of the material along the spiral structure path with the plurality of supporting strip structures, so as to disperse and rearrange the insulation material, further improve the uniformity of the overall mixing of the plurality of insulation materials, effectively increase the contact area and time between the material and the inner wall of the cylinder, so that the material is fully heated, and the thoroughness of melting is ensured.

[0020] 4、The application forms an included angle less than 70° between the inclined strip and the inner wall of the melting cylinder, further improves the contact time between the insulation material and the heated inner wall of the melting cylinder and the stability of the material along the track of the inner wall of the melting cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0022] Figure 1 is a schematic diagram of the overall structure of the application;

[0023] Figure 2 is a schematic diagram of the partial cross-section structure of the heating assembly of the application;

[0024] Figure 3 is a schematic diagram of the partial cross-section structure of the feeding assembly of the application;

[0025] Figure 4 is a schematic diagram of the structure of the spiral blade of the application;

[0026] Figure 5 is a schematic diagram of the partial cross-section structure of the melting assembly of the application;

[0027] Figure 6 is a schematic diagram of the structure of the supporting strip structure of the application;

[0028] Figure 7 is a schematic diagram of the split structure of the discharging channel of the application.

[0029] In the drawings:

[0030] 1, extrusion assembly; 101, cavity type extrusion barrel; 102, seat plate; 103, spiral shaft core; 104, transmission structure; 105, blanking channel; 1051, pipe body; 1052, cylindrical pipe; 1053, filter plate;

[0031] 2, heating assembly; 201, annular liquid storage structure; 202, electric heating structure; 203, communication pipe; 204, circulating pump; 2041, suction pipe; 2042, delivery pipe;

[0032] 3, melting assembly; 301, melting barrel; 3011, inner cavity layer; 302, shaft body structure; 303, spiral structure; 304, motor; 305, support strip structure; 3051, horizontal strip; 3052, inclined strip; 3053, arc-shaped groove;

[0033] 4, feeding assembly; 401, feeding barrel; 402, conical hopper; 403, spiral blade; 4031, notch; 4032, inner groove; 404, feeding pipe. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] Embodiment one

[0036] In order to solve the problem of uneven mixing of each material processing of nuclear power cable insulation layer, please refer to Figures 1-7 The present embodiment provides a processing equipment for nuclear power cable insulation layer material processing, which is mainly used for melting the particle raw materials required by the nuclear power cable insulation layer into a relatively viscous liquid, uniformly plasticizing and extruding. The extrusion assembly 1 is mainly used for extruding the melted insulation material, the heating assembly 2 installed on the extrusion assembly 1 is used to provide the required heat for melting the insulation particle raw materials, the melting assembly 3 provided above the extrusion assembly 1 is in communication with the heating assembly 2 to form a circulating heating loop, thereby realizing the uniform heating of the extrusion assembly 1 and the melting assembly 3, melting the cable insulation particle raw materials in the melting assembly 3, and at the same time, the liquid insulation raw materials entering the extrusion assembly 1 are kept warm, and the feeding assembly 4 installed at the top of the melting assembly 3 is used to guide the uniform mixing of multiple types of materials.

[0037] Since the materials required for the nuclear power cable insulation layer are usually composed of rubber, plastic, additives and other types of materials, and the differences in material density and particle size of the various materials when put into the processing equipment for cable insulation layer material processing cause different movement states and residence times at the equipment feed, thereby affecting the uniformity of subsequent material melting. In order to effectively improve the uniformity of the multiple materials required for the nuclear power cable insulation layer when entering the processing equipment, as shown in Figures 1-2 and Figure 4 The feeding assembly 4 includes a feeding cylinder 401 installed above the melting assembly 3, a conical hopper 402 is installed at the bottom of the feeding cylinder 401, and at least three staggered spiral blades 403 are installed inside the feeding cylinder 401 for guiding different materials to move downward along a spiral trajectory. The grooves 4031 opened on the spiral blades 403 can facilitate the mutual intersection of multiple materials, and the grooves 4031 on the three spiral blades 403 are arranged in a staggered manner to increase the number of mixing of multiple materials, thereby effectively improving the uniformity of mixing. The inner grooves 4032 opened on the upper surface of the spiral blade 403 are used to accurately flow the materials within the spiral trajectory, and the feeding pipe 404 installed at the top of the feeding cylinder 401 is consistent with the number of spiral blades 403 and located above the head end of the spiral blade 403. In actual application, the rubber, plastic and additives are respectively slid along the three feeding pipe 404 into the inside of the feeding cylinder 401, and respectively fall on the surface of the uppermost segment of the three spiral blades 403, and then slide downward along the recessed spiral blade 403 provided with the inner grooves 4032 from top to bottom along the spiral path, while increasing the fluidity of the materials, avoiding the accumulation or blockage of the materials inside the feeding cylinder 401. In the process, the materials on a single spiral blade 403 will fall down along the groove 4031 to another spiral blade 403 after flowing for a set distance, mix with the materials on this spiral blade 403 and continue to flow together, and after the materials on the three spiral blades 403 intersect multiple times, the purpose of cross-mixing is achieved, thereby improving the mixing efficiency and uniformity of multiple materials.

[0038] Example two

[0039] After the multiple materials are uniformly put into the inside of the melting assembly 3, they need to be heated to melt the insulation raw materials. In order to avoid the problem that the materials melted and falling into the inside of the extrusion assembly 1 are cooled and affect the extrusion effect, as shown in Figures 1-2 and Figure 5As shown, the extrusion assembly 1 comprises a chambered extrusion barrel 101, which is provided with cavities for heating as required, and a seat plate 102 installed at the bottom of the chambered extrusion barrel 101. The heating assembly 2 comprises a ring-shaped liquid storage structure 201 installed on one side of the chambered extrusion barrel 101, and an electric heating structure 202 installed inside the ring-shaped liquid storage structure 201. The ring-shaped liquid storage structure 201 is provided with a communication pipe 203 extending into the chambered extrusion barrel 101. The top of the seat plate 102 is provided with a support frame, and a circulating pump 204 is installed on the support frame. The input end of the circulating pump 204 is provided with a suction pipe 2041 connected to the inner cavity of the chambered extrusion barrel 101. The output end of the circulating pump 204 is connected to a delivery pipe 2042 extending into the melting assembly 3. The melting assembly 3 comprises a melting barrel 301 arranged above the chambered extrusion barrel 101, and an inner cavity layer 3011 provided on the wall of the melting barrel 301 and connected to the delivery pipe 2042. A straight pipe is arranged between the inner cavity layer 3011 and the ring-shaped liquid storage structure 201. The ring-shaped liquid storage structure 201 is filled with liquid, which is heated by the electric heating structure 202, and the liquid in the chambered extrusion barrel 101 is pumped out by the circulating pump 204 and the suction pipe 2041. The missing liquid in the chambered extrusion barrel 101 is supplied from the ring-shaped liquid storage structure 201 through the communication pipe 203. The high-temperature liquid pumped out by the circulating pump 204 is delivered to the inner cavity layer 3011 of the melting barrel 301 through the delivery pipe 2042, and the liquid in the inner cavity layer 3011 flows back to the ring-shaped liquid storage structure 201 through the straight pipe for re-heating. The high-temperature liquid forms a circulation loop in the ring-shaped liquid storage structure 201, the communication pipe 203, the chambered extrusion barrel 101, the suction pipe 2041, the circulating pump 204, the delivery pipe 2042, the inner cavity layer 3011 and the straight pipe, thereby ensuring that the materials in the melting assembly 3 and the extrusion assembly 1 are heated.

[0040] Example Three

[0041] When multiple materials are uniformly mixed and fed into the melting barrel 301, the materials may not be fully melted due to insufficient contact with the heat source. In order to effectively improve the thoroughness of the melting of the nuclear power cable insulation material, the melting barrel 301 is provided with a heating assembly 2. Figure 1 and Figure 5As shown, the inside of the melting cylinder 301 is rotatably mounted with a shaft body structure 302, the shaft body structure 302 is mounted with a spiral structure 303, a motor 304 is mounted on one side of the melting cylinder 301 to control the shaft body structure 302 to drive the spiral structure 303 to rotate at a constant speed, and a plurality of supporting strip structures 305 for increasing the contact time of the material with the inner wall of the melting cylinder 301 are mounted on the spiral structure 303. The motor 304 drives the shaft body structure 302 to drive the spiral structure 303 to rotate at a constant speed towards the set direction, so as to drive the insulation material in the melting cylinder 301 to advance along the spiral direction of the blade, so as to achieve the purpose of conveying, and at the same time cooperate with the heat source provided by the heating assembly 2 to achieve the effect of melting the insulation material. During the process, the plurality of supporting strip structures 305 rotate at a constant speed with the spiral structure 303, which can break the continuous flow state of the material along the path of the spiral structure 303, so as to disperse and rearrange the material during the conveying process, improve the overall fluidity and uniformity. In addition, the contact area and time between the material and the inner wall of the cylinder can be increased, so that the material is fully heated to ensure the thoroughness of melting, and at the same time, due to the scraping of the inner wall of the melting cylinder 301 by the supporting strip structure 305, the insulation material in the molten state can be effectively prevented from adhering to the wall.

[0042] In order to further improve the contact time between the insulation material and the inner wall of the heated melting cylinder 301, as shown in Figure 5 and Figure 6 The supporting strip structure 305 includes a horizontal strip 3051 mounted on the spiral structure 303, an inclined strip 3052 abutting the inner wall of the melting cylinder 301 is mounted on the horizontal strip 3051, and an arc-shaped groove 3053 extending to the inclined strip 3052 is formed in the horizontal strip 3051. Since the angle difference between the inclined strip 3052 and the side of the horizontal strip 3051 where the arc-shaped groove 3053 is arranged is at least 20°, when the supporting strip structure 305 rotates from the lower rear side to the upper front side following the rear side of the spiral structure 303, the supporting strip structure 305 can push the material to rotate from the lower rear side to the upper front side of the melting cylinder 301. During the process, the material is mainly concentrated in the angle less than 70° between the inclined strip 3052 and the inner wall of the melting cylinder 301, until the supporting strip structure 305 rotates to a position above the middle of the front side of the melting cylinder 301, and the inclined strip 3052 is in a downward inclined state from front to back. The material pushed by the supporting strip structure 305 can only fall downward, further improving the contact time between the insulation material and the inner wall of the heated melting cylinder 301 and the stability of the material along the track of the inner wall of the melting cylinder 301, and in addition, the dispersion of the material when falling is increased by the plurality of arc-shaped grooves 3053.

[0043] As shown in Figures 1-2 and Figure 7As shown, the inside of the compartment type extrusion barrel 101 is provided with a spiral shaft core 103 penetrating through the annular liquid storage structure 201, and a transmission structure 104 is arranged between the spiral shaft core 103 and the shaft body structure 302. When the shaft body structure 302 drives the spiral structure 303 to rotate by controlling the motor 304, the transmission structure 104 transmits the rotating force of the shaft body structure 302 to the spiral shaft core 103, so as to control the synchronous rotation of the spiral shaft core 103, thereby performing the extrusion operation of the liquid material close to the inside of the compartment type extrusion barrel 101. The extrusion part and the melting part adopt the same driving source, which can effectively save the power cost. One side of the top of the compartment type extrusion barrel 101 is provided with a discharging channel 105 for communicating with the melting barrel 301. The discharging channel 105 is composed of a pipe body 1051 extending into the inside of the compartment type extrusion barrel 101 and the inside of the melting barrel 301, a cylindrical pipe 1052 connected to the pipe body 1051 through a flange, and a filter plate 1053 arranged in the inside of the cylindrical pipe 1052. The filter plate 1053 is used to slow down the speed of the insulation material in the molten state transferred to the inside of the compartment type extrusion barrel 101, and intercept the insulation particle material which has not been melted above, so as to avoid the subsequent extrusion in the compartment type extrusion barrel 101, and affect the extrusion effect of the nuclear power cable insulation layer.

[0044] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A processing equipment for processing nuclear power cable insulation material, comprising an extrusion assembly (1), characterized in that: A heating component (2) is installed on the extrusion component (1), and a melting component (3) that is interconnected with the heating component (2) to form a circulating heating is provided above the extrusion component (1). A feeding component (4) that guides the uniform mixing of multiple types of materials is installed on the top of the melting component (3). The feeding assembly (4) includes a feeding cylinder (401) installed above the melting assembly (3). A conical hopper (402) is installed at the bottom of the feeding cylinder (401). At least three staggered spiral blades (403) are installed inside the feeding cylinder (401) to guide different materials to move downward along a spiral trajectory. Several slots (4031) for accommodating the mutual convergence of various materials are opened on the spiral blades (403). The slots (4031) on the three spiral blades (403) are staggered. An inner groove (4032) for accurately flowing the material within the spiral trajectory range is opened on the upper surface of the spiral blades (403). The top of the feeding cylinder (401) is equipped with a feed inlet (404) that is the same number as the spiral blades (403) and located above the head end of the spiral blades (403).

2. The processing equipment for processing nuclear power cable insulation layer materials according to claim 1, characterized in that: The extrusion assembly (1) includes a cavity-type extrusion cylinder (101), and a support plate (102) is installed at the bottom of the cavity-type extrusion cylinder (101); The heating assembly (2) includes an annular liquid storage structure (201) installed on one side of the cavity-type extrusion cylinder (101), an electric heating structure (202) installed inside the annular liquid storage structure (201), and a connecting pipe (203) extending into the cavity-type extrusion cylinder (101) installed inside the annular liquid storage structure (201).

3. The processing equipment for processing nuclear power cable insulation layer materials according to claim 2, characterized in that: A support frame is installed on the top of the seat plate (102), and a circulation pump (204) is installed on the support frame. The input end of the circulation pump (204) is connected to a suction pipe (2041) that communicates with the inner cavity of the cavity-type extrusion cylinder (101), and the output end of the circulation pump (204) is connected to a delivery pipe (2042) that extends into the interior of the melting component (3).

4. The processing equipment for processing nuclear power cable insulation layer materials according to claim 3, characterized in that: The melting assembly (3) includes a melting cylinder (301) disposed above a cavity-type extrusion cylinder (101). An inner cavity layer (3011) communicating with a delivery pipe (2042) is provided on the wall of the melting cylinder (301). A straight conduit is connected between the inner cavity layer (3011) and the annular liquid storage structure (201).

5. The processing equipment for processing nuclear power cable insulation material according to claim 4, characterized in that: The melting cylinder (301) is rotatably mounted with a shaft structure (302), and a spiral structure (303) is mounted on the shaft structure (302). A motor (304) is mounted on one side of the melting cylinder (301) to control the shaft structure (302) to drive the spiral structure (303) to rotate at a uniform speed. Several support structures (305) are mounted on the spiral structure (303) to increase the contact time between the material and the inner wall of the melting cylinder (301).

6. The processing equipment for processing nuclear power cable insulation layer materials according to claim 5, characterized in that: The support structure (305) includes a horizontal bar (3051) installed on the spiral structure (303), and an inclined nipple (3052) that fits against the inner wall of the melting cylinder (301) is installed on the horizontal bar (3051). An arc groove (3053) extending to the inclined nipple (3052) is opened on the horizontal bar (3051). The angle difference between the inclined surface (3052) and the side of the horizontal bar (3051) where the arc groove (3053) is set is at least 20°.

7. The processing equipment for processing nuclear power cable insulation layer materials according to claim 2, characterized in that: The cavity-type extrusion cylinder (101) has a spiral shaft core (103) that passes through the annular liquid storage structure (201) installed inside. A transmission structure (104) is installed between the spiral shaft core (103) and the shaft structure (302). A feeding channel (105) for connecting the molten cylinder (301) is installed on one side of the top of the cavity-type extrusion cylinder (101).

8. The processing equipment for processing nuclear power cable insulation material according to claim 7, characterized in that: The feeding channel (105) consists of a tube (1051) extending into the interior of the cavity-type extrusion cylinder (101) and the melting cylinder (301), a cylindrical tube (1052) connected to the tube (1051) by a flange, and a filter plate (1053) installed inside the cylindrical tube (1052).

Images