Extrusion forming device for double-tube heat preservation pipe production

Abstract

The application relates to the technical field of heat-preservation tube extrusion forming, in particular to an extrusion forming device for double-tube heat-preservation tube production, which comprises an extrusion cavity and a heating cylinder, the heating cylinder is fixedly sleeved on the outside of the extrusion cavity, a waste hopper and a raw material cylinder are fixedly installed at the top of the extrusion cavity, the waste hopper and the raw material cylinder are respectively located at the middle end and the tail end of the extrusion cavity, a sealing cover is rotatably installed in the waste hopper, and a plurality of spiral supporting rods are integrally formed on the top of the sealing cover. The spiral supporting rods rotating in the waste hopper can stir the waste material solution when the spiral supporting rods rotate, the melting effect of the waste material is improved, the particles and impurities in the solution are captured, the spiral rod two reciprocatingly moves up and down, the uniformity and efficiency of mixing are improved, the solution driving rotating drum is reversely rotated, the solution in the extrusion cavity is mixed at the rotating drum, and the uniformity of solution mixing is further improved.

Description

Technical Field

[0001] This invention relates to the field of extrusion molding technology for thermal insulation pipes, and more particularly to an extrusion molding apparatus for the production of double-pipe thermal insulation pipes. Background Technology

[0002] With the rapid development of the global economy and the improvement of people's living standards, the market demand for air conditioners, as an important household appliance, continues to grow. In air conditioning systems, double-pipe insulation pipes play a crucial role, effectively reducing heat loss during the refrigerant transportation process, improving the energy efficiency of the air conditioning system, and reducing energy consumption. Traditional insulation pipe production mainly uses new polymer materials, such as polyethylene and polyurethane. The production of these materials requires the consumption of a large amount of non-renewable resources such as petroleum. Continuously relying on new polymer materials for the production of air conditioning double-pipe insulation pipes is undoubtedly an excessive consumption of limited resources and is not conducive to the sustainable use of resources. If waste materials are used as auxiliary materials in production, not only can resources be saved, but the problem of excessive and inconvenient waste material disposal can also be solved. However, when using waste materials, existing extrusion molding equipment requires sorting and processing steps before melting, which not only increases the processing steps of extrusion molding, but also causes uneven mixing of the two raw material solutions during processing, resulting in low utilization rate of waste materials and poor quality of insulation pipes. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the background art by proposing an extrusion molding device for the production of double-tube insulated pipes.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An extrusion molding device for producing double-tube insulated pipes includes an extrusion chamber and a heating cylinder. The heating cylinder is fixedly fitted onto the outside of the extrusion chamber. A waste hopper and a raw material cylinder are fixedly installed on the top of the extrusion chamber, located at the middle and end of the extrusion chamber, respectively. A sealing cover is rotatably installed inside the waste hopper. Several evenly distributed spiral support rods are integrally formed on the top of the sealing cover. The outer sides of the spiral support rods are in contact with the inner side of the waste hopper. A second spiral rod is slidably inserted into the bottom of the sealing cover. A first spiral rod is rotatably installed inside the extrusion chamber. The second spiral rod is located above the first spiral rod. A rotating cylinder is movably fitted onto the outer side of the first spiral rod. A second sliding cylinder is slidably installed inside the extrusion chamber. The rotating cylinder is rotatably installed inside the second sliding cylinder.

[0006] In the above-mentioned extrusion molding device for producing double-tube heat-insulating pipes, the side wall of the spiral support rod is provided with a through hole, the through hole penetrates the sealing cover and is connected to the inside of the extrusion chamber, the bottom of the sealing cover is integrally formed with a slide cylinder, and the spiral rod is slidably inserted into the inside of the slide cylinder.

[0007] In the above-mentioned extrusion molding device for producing double-tube heat-insulating pipes, the bottom of the waste hopper is integrally formed with a support first, the spiral rod second is slidably inserted into the inside of the support first, the outer peripheral wall of the bottom of the spiral rod second is provided with a corrugated groove, and the inside of the support first is integrally formed with a sliding ball, which is slidably installed inside the corrugated groove.

[0008] In the above-mentioned extrusion molding device for producing double-tube insulated pipes, a slider is welded to the top of the spiral support rod, a waste trough is provided on the outer peripheral wall of the waste hopper, the slider is slidably installed inside the waste trough, a waste outlet is provided at the bottom of the waste trough, a motor is fixedly installed on the top of the waste hopper, a rotating shaft is fixedly connected to the output shaft of the motor, and the bottom of the rotating shaft is fixedly connected to the top of the sealing cover.

[0009] In the above-mentioned extrusion molding device for producing double-tube heat-insulating pipes, a groove is provided at the top of the inner wall of the extrusion chamber, and a slider is integrally formed at the top of the slide cylinder. The slider is slidably installed inside the groove, and a spring is provided between the two sides of the slider and the two sides of the groove.

[0010] In the above-mentioned extrusion molding device for producing double-tube heat-insulating pipes, the inside of the rotating drum is integrally formed with two rows of staggered blades. Each row of blades is evenly distributed in a circumferential shape on the inner side of the rotating drum, and each blade is inclined.

[0011] In the above-mentioned extrusion molding device for producing double-tube heat-insulating pipes, a motor three is fixedly installed at the top of the raw material cylinder, and a rotating shaft two is fixedly connected to the output shaft of the motor three. Several evenly distributed stirring rods are fixedly installed on the outside of the rotating shaft two, and the stirring rods are rotatably installed inside the raw material cylinder.

[0012] In the above-mentioned extrusion molding device for producing double-tube heat-insulating pipes, an extrusion head is fixedly installed at the outlet of the extrusion chamber, a motor is fixedly installed inside the extrusion chamber, the output shaft of the motor is fixedly connected to the screw rod, a filter ring is fixedly installed inside the extrusion chamber, the filter ring is located between the waste hopper and the raw material cylinder, and an annular groove is formed on the outer peripheral wall of the screw rod, with the filter ring located outside the annular groove.

[0013] Compared with existing technologies, the beneficial effects of the present invention are as follows:

[0014] 1. The rotating spiral support rod inside the waste hopper agitates the waste material solution, improving the melting effect and capturing particles and impurities within the solution. The spiral design then discharges these particles and impurities into the waste tank, preventing excessive impurities in the waste material solution from causing poor quality of the insulation pipe. The through-hole is located on the non-scraping side of the spiral support rod, ensuring that the solution entering the through-hole is free of impurities and particles, further improving the purity of the waste material solution inside the extrusion chamber.

[0015] 2. The rotation of the second screw extrudes the waste material solution into the extrusion chamber, mixing the waste material solution with the raw material solution. The second screw moves up and down repeatedly. When the second screw moves upward, it draws the solution from inside the extrusion chamber, allowing the raw material solution and waste solution to mix again inside the waste hopper, improving the uniformity and efficiency of the mixing. When the second screw moves downward, it extrudes the mixture downward, further improving the uniformity and efficiency of the mixing.

[0016] 3. The solution drives the rotating drum to rotate in the opposite direction, causing the solution inside the extrusion chamber to mix at the rotating drum, further improving the uniformity of the mixing of the raw material solution and the waste solution. When the second screw moves upward and draws the solution inside the extrusion chamber, the rotating drum stops rotating and drives the second slide to move in the direction of the second screw, increasing the amount of solution entering the waste hopper and further improving the mixing efficiency. When the second screw moves downward, the second screw expels the mixture downward, causing a large amount of solution to flow through the blades. At this time, the rotating drum speed increases, further improving the uniformity and efficiency of the mixing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0019] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle;

[0021] Figure 5 This is a cross-sectional view of the waste hopper in this invention;

[0022] Figure 6 This is a partial structural diagram of the sealing cover in this invention;

[0023] Figure 7 This is a schematic diagram of the structure of the second screw rod in this invention;

[0024] Figure 8 This is a disassembly diagram of the slide cylinder 2 and the rotating cylinder in this invention;

[0025] Figure 9 This is a planar schematic diagram of the slide cylinder and the rotating cylinder in this invention;

[0026] Figure 10 This is a cross-sectional view of the extrusion head in this invention;

[0027] Figure 11 This is a schematic diagram of the helical support rod in this invention.

[0028] In the diagram: 1. Extrusion chamber; 11. Heating cylinder; 121. Extrusion head; 122. Screw rod one; 123. Motor one; 124. Slide groove one; 125. Filter ring; 126. Ring groove; 21. Waste hopper; 211. Rotating shaft one; 212. Motor two; 213. Waste trough; 214. Waste outlet; 215. Support one; 216. Sliding ball; 22. Sealing cover; 221. Screw support rod; 222. Slider one; 223. Through hole; 224. Slide cylinder one; 225. Screw rod two; 226. Corrugated groove; 231. Slide cylinder two; 232. Spring one; 233. Slider two; 234. Rotating drum; 235. Blade; 31. Raw material cylinder; 311. Rotating shaft two; 312. Motor three; 313. Stirring rod. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0030] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] Reference Figure 1 - Figure 11As shown, an extrusion molding device for producing double-tube insulated pipes includes an extrusion chamber 1 and a heating cylinder 11. The heating cylinder 11 is fixedly fitted onto the outside of the extrusion chamber 1. A waste hopper 21 and a raw material cylinder 31 are fixedly installed on the top of the extrusion chamber 1. The waste hopper 21 and the raw material cylinder 31 are located at the middle and end of the extrusion chamber 1, respectively. A sealing cover 22 is rotatably installed inside the waste hopper 21. Several evenly distributed spiral support rods 221 are integrally formed on the top of the sealing cover 22. The outer side of the spiral support rods 221 is in contact with the inner side of the waste hopper 21. A second spiral rod 225 is slidably inserted into the bottom of the sealing cover 22. A first spiral rod 122 is rotatably installed inside the extrusion chamber 1. The second spiral rod 225 is located above the first spiral rod 122. A rotating cylinder 234 is movably fitted onto the outer side of the first spiral rod 122. A second sliding cylinder 231 is slidably installed inside the extrusion chamber 1. The rotating cylinder 234 is rotatably installed inside the second sliding cylinder 231.

[0032] In this process, after the recycled waste materials are placed into the waste hopper 21, the waste hopper 21 is heated and melted, so that the waste materials are in a liquid state.

[0033] like Figure 3 , Figure 5 , Figure 6 and Figure 11 As shown, a slider 222 is welded to the top of the spiral support rod 221. A waste trough 213 is provided on the outer peripheral wall of the waste hopper 21. The slider 222 is slidably installed inside the waste trough 213. A waste outlet 214 is provided at the bottom of the waste trough 213. A motor 212 is fixedly installed on the top of the waste hopper 21. The output shaft of the motor 212 is fixedly connected to a rotating shaft 211. The bottom of the rotating shaft 211 is fixedly connected to the top of the sealing cover 22.

[0034] When the second motor 212 drives the first rotating shaft 211 to rotate, the first rotating shaft 211 drives the sealing cover 22 to rotate, and the spiral support rod 221 rotates with the sealing cover 22, so that the spiral support rod 221 stirs the waste material solution, improves the melting effect of the waste material, and captures the particles and impurities inside the solution. Through the spiral design, the particles and impurities are discharged into the waste tank 213. The slider 222 moves with the spiral support rod 221, so that after the particles and impurities fall into the waste tank 213, the slider 222 pushes the particles and waste into the waste port 214 and discharges them.

[0035] like Figure 3 , Figure 6 and Figure 11 As shown, the side wall of the spiral support rod 221 has a through hole 223, which penetrates the sealing cover 22 and is connected to the inside of the extrusion chamber 1. The bottom of the sealing cover 22 is integrally formed with a slide cylinder 224, and the spiral rod 225 is slidably inserted into the inside of the slide cylinder 224.

[0036] The through hole 223 is located on the non-scraping side of the spiral support 221, so that the solution entering the through hole 223 is free of impurities and particles.

[0037] like Figure 3 , Figure 5 and Figure 7 As shown, the bottom of the waste hopper 21 is integrally formed with a support 215, and a spiral rod 225 is slidably inserted into the inside of the support 215. A corrugated groove 226 is provided on the outer peripheral wall of the bottom of the spiral rod 225. A sliding ball 216 is integrally formed inside the support 215 and is slidably installed inside the corrugated groove 226.

[0038] The second screw rod 225 rotates along with the sealing cover 22, causing the sliding ball 216 to drive the second screw rod 225 to move up and down reciprocally. The rotation of the second screw rod 225 squeezes the waste material solution into the extrusion chamber 1, so that the waste material solution and the raw material solution are mixed. When the second screw rod 225 moves upward, it draws the solution from the extrusion chamber 1, so that the raw material solution and the waste solution are mixed again in the waste hopper 21, improving the uniformity and efficiency of the mixing. When the second screw rod 225 moves downward, it squeezes the mixture downward, further improving the uniformity and efficiency of the mixing.

[0039] like Figure 3 , Figure 8 and Figure 9 As shown, a groove 124 is provided on the top of the inner wall of the extrusion chamber 1. A slider 233 is integrally formed on the top of the slide cylinder 231. The slider 233 is slidably installed inside the groove 124. A spring 232 is provided between the two sides of the slider 233 and the two sides of the groove 124. Two rows of staggered blades 235 are integrally formed inside the rotating cylinder 234. Each row of blades 235 is evenly distributed in a circumferential shape on the inner side of the rotating cylinder 234, and each blade 235 is inclined.

[0040] When the screw rod 122 extrudes the solution to the outlet of the extrusion chamber 1, the solution flows through the blade 235. The inclined design of the blade 235 causes the blade 235 to drive the rotating drum 234 to rotate. The rotation direction of the rotating drum 234 is opposite to the rotation direction of the screw rod 122, so that the solution inside the extrusion chamber 1 is mixed at the rotating drum 234.

[0041] Further reference Figure 3To explain, when the second screw rod 225 moves upward and draws the solution from the extrusion chamber 1, the solution between the bottom of the rotating drum 234 and the waste hopper 21 decreases instantaneously, causing the rotating drum 234 to stop rotating. At this time, the rotating drum 234 drives the second slide cylinder 231 to move in the direction of the second screw rod 225, increasing the amount of solution entering the waste hopper 21 and further improving the mixing efficiency. After the slide cylinder 231 slides, it returns to its original position through the first spring 232. When the second screw rod 225 moves downward, it squeezes the mixture downward, causing a large amount of solution to flow through the blade 235. At this time, the rotation speed of the rotating drum 234 increases, further improving the uniformity and efficiency of mixing.

[0042] like Figure 1 and Figure 2 As shown, a motor 312 is fixedly installed on the top of the raw material cylinder 31. The output shaft of the motor 312 is fixedly connected to a rotating shaft 311. Several evenly distributed stirring rods 313 are fixedly installed on the outside of the rotating shaft 311. The stirring rods 313 are rotatably installed inside the raw material cylinder 31.

[0043] like Figure 1 , Figure 2 , Figure 4 and Figure 10 As shown, an extrusion head 121 is fixedly installed at the outlet of the extrusion chamber 1. An electric motor 123 is fixedly installed inside the extrusion chamber 1. The output shaft of the electric motor 123 is fixedly connected to the screw rod 122. A filter ring 125 is fixedly installed inside the extrusion chamber 1. The filter ring 125 is located between the waste hopper 21 and the raw material cylinder 31. An annular groove 126 is opened on the outer peripheral wall of the screw rod 122. The filter ring 125 is located outside the annular groove 126.

[0044] In this process, after the raw material particles are placed inside the raw material cylinder 31, the electric motor 312 drives the stirring rod 313 to rotate, so that the raw material particles enter the extrusion chamber 1 evenly. The raw material particles are melted into a solution by the heating cylinder 11. When the solution flows through the filter ring 125, the filter ring 125 intercepts the undissolved particles in the solution, thus preventing the solution from containing particles.

[0045] The working principle and usage of this invention are explained in detail below: After the raw material particles and waste materials are respectively placed into the raw material cylinder 31 and the waste hopper 21, the motors 1-123, 2-12, and 3-12 are started. Motor 3-12 drives the stirring rod 313 to rotate, causing the raw material particles to enter the extrusion chamber 1 evenly. Motor 1-123 drives the screw rod 1-122 to rotate, causing the raw material particles to move towards the outlet of the extrusion chamber 1. During the movement of the raw material particles, they are melted by heating in the heating cylinder 11. The waste materials pass through the waste hopper 21... Heating is used for melting. Motor 212 drives the spiral support rod 221 to rotate, causing it to stir the waste material solution and improve the melting effect. Simultaneously, it captures particles and impurities within the solution and, through its spiral design, discharges them into the waste tank 213. The particles and impurities inside the waste tank 213 are discharged through slider 222. During the rotation of the spiral support rod 221, the waste material solution moves through the through-hole 223 to below the sealing cover 22. The spiral rod 225 and spiral support rod 221 rotate synchronously, causing the spiral rod 225... 225 The solution below the sealing cover 22 is squeezed into the interior of the extrusion chamber 1 and mixed with the raw material solution. The screw rod 122 drives the solution inside the extrusion chamber 1 to move towards the outlet of the extrusion chamber 1, causing the solution to drive the rotating drum 234 to rotate in the opposite direction to the screw rod 122. This allows the solution inside the extrusion chamber 1 to mix at the rotating drum 234, improving the uniformity and efficiency of the mixing of the waste material solution and the raw material solution. During the rotation of the screw rod 225, the sliding ball 216 drives the screw rod 225 to move up and down reciprocally. When the screw rod 225 moves upward, the screw rod 225... 5. The solution inside the extrusion chamber 1 is extracted, causing the solution between the bottom of the rotating drum 234 and the waste hopper 21 to decrease instantaneously. The rotating drum 234 stops rotating and drives the sliding drum 231 to move towards the screw rod 225, increasing the amount of solution entering the waste hopper 21. The raw material solution and the waste solution are mixed again inside the waste hopper 21, improving the uniformity and efficiency of the mixing. When the screw rod 225 moves downward, it squeezes the mixture downward, causing a large amount of solution to flow through the blade 235. At this time, the rotating drum 234 rotates faster, further improving the uniformity and efficiency of the mixing.

[0046] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An extrusion molding apparatus for producing double-tube insulated pipes, comprising an extrusion chamber (1) and a heating cylinder (11), characterized in that: The heating cylinder (11) is fixedly fitted onto the outside of the extrusion chamber (1). A waste hopper (21) and a raw material cylinder (31) are fixedly installed on the top of the extrusion chamber (1). The waste hopper (21) and the raw material cylinder (31) are located at the middle and end of the extrusion chamber (1), respectively. A sealing cover (22) is rotatably installed inside the waste hopper (21). Several evenly distributed spiral support rods (221) are integrally formed on the top of the sealing cover (22). The outer side of the spiral support rods (221) and the waste hopper (21) The inner side of the sealing cover (22) is in contact with the bottom of the sealing cover (22), the second spiral rod (225) is slidably inserted, the first spiral rod (122) is rotatably installed inside the extrusion chamber (1), the second spiral rod (225) is located above the first spiral rod (122), the outer side of the first spiral rod (122) is movably fitted with a rotating cylinder (234), the second sliding cylinder (231) is slidably installed inside the extrusion chamber (1), and the rotating cylinder (234) is rotatably installed inside the second sliding cylinder (231); The side wall of the spiral support rod (221) is provided with a through hole (223), the through hole (223) penetrates the sealing cover (22) and is connected to the inside of the extrusion chamber (1). The bottom of the sealing cover (22) is integrally formed with a slide cylinder (224), and the spiral rod (225) is slidably inserted into the inside of the slide cylinder (224). The bottom of the waste hopper (21) is integrally formed with a support frame (215), and the spiral rod (225) is slidably inserted into the inside of the support frame (215). The outer peripheral wall of the bottom of the spiral rod (225) is provided with a corrugated groove (226). The inside of the support frame (215) is integrally formed with a ball bearing (216), and the ball bearing (216) is slidably installed inside the corrugated groove (226). The top of the inner wall of the extrusion chamber (1) is provided with a sliding groove (124), and the top of the sliding cylinder (231) is integrally formed with a slider (233). The slider (233) is slidably installed inside the sliding groove (124). A spring (232) is provided between the two sides of the slider (233) and the two sides of the sliding groove (124). The inside of the rotating cylinder (234) is integrally formed with two rows of staggered blades (235). Each row of blades (235) is evenly distributed in a circumferential shape on the inner side of the rotating cylinder (234), and each blade (235) is inclined.

2. The extrusion molding apparatus for producing double-tube insulated pipes according to claim 1, characterized in that: The top of the spiral support rod (221) is welded with a slider (222), the outer peripheral wall of the waste hopper (21) is provided with a waste trough (213), the slider (222) is slidably installed inside the waste trough (213), the bottom of the waste trough (213) is provided with a waste port (214), the top of the waste hopper (21) is fixedly installed with a motor (212), the output shaft of the motor (212) is fixedly connected to a rotating shaft (211), and the bottom of the rotating shaft (211) is fixedly connected to the top of the sealing cover (22).

3. The extrusion molding apparatus for producing double-tube insulated pipes according to claim 1, characterized in that: The top of the raw material cylinder (31) is fixedly installed with a motor three (312), the output shaft of the motor three (312) is fixedly connected to a rotating shaft two (311), and a number of evenly distributed stirring rods (313) are fixedly installed on the outside of the rotating shaft two (311). The stirring rods (313) are rotatably installed inside the raw material cylinder (31).

4. The extrusion molding apparatus for producing double-tube insulated pipes according to claim 1, characterized in that: An extrusion head (121) is fixedly installed at the outlet of the extrusion chamber (1). An electric motor (123) is fixedly installed inside the extrusion chamber (1). The output shaft of the electric motor (123) is fixedly connected to the screw rod (122). A filter ring (125) is fixedly installed inside the extrusion chamber (1). The filter ring (125) is located between the waste hopper (21) and the raw material cylinder (31). An annular groove (126) is opened on the outer peripheral wall of the screw rod (122). The filter ring (125) is located outside the annular groove (126).

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