Automatic production device for high-toughness graphite heat exchange tube

Abstract

The utility model discloses an automatic production device for a high-toughness graphite heat exchange tube, which comprises an extrusion cylinder, a die head and a driving motor, and the die head is connected to the extrusion end of the extrusion cylinder; wherein the profile of the cross section of an inner cavity of the extrusion cylinder is 8-shaped, and an extrusion screw I and an extrusion screw II are respectively arranged in the cavity and are connected with the driving motor through a transmission chain; the end, away from the die head, of the extrusion barrel is connected with a liquid feeding pipe and a powder feeding pipe, and the liquid feeding pipe and the powder feeding pipe are communicated with the interior of the extrusion barrel. The device disclosed by the utility model has the characteristics of high integration degree, less corollary equipment, small occupied area, low equipment investment cost, no need of a middle pipeline for conveying slurry, and low risk of blockage and slurry segregation.

Description

TECHNICAL FIELD

[0001] The utility model relates to a graphite heat exchange pipe's processing device, especially a high toughness graphite heat exchange pipe automation production device. BACKGROUND

[0002] The graphite heat exchange pipe is one of the indispensable components in the column tube type graphite heat exchanger, and is mainly used for distinguishing the material side and the service side, so that the media on both sides exchange heat, thereby achieving the purpose of heat exchange.

[0003] With the development trend of industrial scale, the graphite heat exchanger is also developing towards large-scale, which leads to the problems of traditional graphite column tube heat exchanger being exposed continuously, and the poor toughness of the graphite heat exchange pipe is one of the important reasons hindering the large-scale development of the graphite heat exchanger. Therefore, the applicant has developed a preparation method of high toughness graphite heat exchange pipe, and has obtained a patent, and the patent number is ZL2021111982066.

[0004] However, the high toughness graphite heat exchange pipe is still prepared by the traditional method during preparation, that is, the materials are mixed in proportion, the slurry is prepared in a pulping device, and then is transported to a base device through a pipeline for extrusion molding. The problems are that there are many supporting devices, the land occupation area is large, the equipment investment cost is high, and there are risks such as pipeline blockage and slurry segregation between pulping and extrusion, thereby affecting the processing efficiency and reducing the performance of the graphite pipe.

[0005] Therefore, the applicant improves the production device of the high toughness graphite heat exchange pipe on the basis, and designs the scheme of the present application. CONTENT OF THE UTILITY MODEL

[0006] In order to solve the above technical problems, the utility model provides a kind of high toughness graphite heat exchange pipe automation production device. The utility model has the characteristics of high integration degree, less supporting equipment, small land occupation area, low equipment investment cost, and no intermediate pipeline for transporting slurry, and small risk of blockage and slurry segregation.

[0007] The technical scheme of the utility model comprises:

[0008] A kind of high toughness graphite heat exchange pipe automation production device, including extrusion cylinder, die head and drive motor, die head is connected to the extrusion end of extrusion cylinder;

[0009] Wherein, the cross section profile of the extrusion cylinder inner cavity is 8-shaped, chamber is equipped with extrusion screw one and extrusion screw two respectively, extrusion screw one and extrusion screw two are connected with the drive motor through transmission chain;

[0010] The liquid feeding pipe and the powder feeding pipe are connected with the inside of the extrusion cylinder.

[0011] The device has high integration degree, less supporting equipment, small floor area, low equipment investment cost, and small risk of blockage and slurry segregation.

[0012] Preferably, the automatic production device for high-toughness graphite heat exchange pipes has a transmission gear on the first extrusion screw and a driven gear on the second extrusion screw, which meshes with the transmission gear.

[0013] The transmission gear and the driven gear are meshed with each other to transmit power, so that the structure is simpler and the equipment cost is lower.

[0014] Preferably, the automatic production device for high-toughness graphite heat exchange pipes has a liquid metering pump on the liquid feeding pipe and a powder metering pump on the powder feeding pipe.

[0015] The liquid metering pump and the powder metering pump are arranged on the liquid feeding pipe and the powder feeding pipe respectively, and the delivery ratio of the materials is controlled by the respective metering pumps, so that the automation degree is higher and the processing efficiency is higher.

[0016] Preferably, the automatic production device for high-toughness graphite heat exchange pipes has an electric heater one on the outside of the end of the extrusion cylinder close to the die head, and the electric heater one is connected with a medium-temperature zone electric heating control unit.

[0017] The electric heater one is arranged on the extrusion cylinder to provide heat for the slurry in the inside of the extrusion cylinder, so that the flowability is ensured and the processing efficiency is higher.

[0018] Preferably, the automatic production device for high-toughness graphite heat exchange pipes has an electric heater two on the outside of the die head, and the electric heater two is connected with a high-temperature zone electric heating control unit.

[0019] The electric heater two is arranged on the die head to provide heat for the slurry in the inside of the die head, so that the flowability is ensured, the water evaporation is accelerated, and the pipe forming is facilitated.

[0020] Preferably, the automatic production device for high-toughness graphite heat exchange pipes has an electric heater three on the outside of the liquid feeding pipe, and the electric heater three is connected with a liquid preheating control unit.

[0021] Preferably, the high-toughness graphite heat exchange pipe automatic production device, the outer side of the powder feeding pipe is provided with an electric heater four, and the electric heater four is connected with a powder preheating control unit.

[0022] The liquid and the powder can be preheated through the electric heaters arranged on the liquid feeding pipe and the powder feeding pipe, so that the temperature difference of the materials entering the extrusion cylinder is reduced.

[0023] The high-toughness graphite heat exchange pipe automatic production device has the advantages that:

[0024] 1. The extrusion cylinder is designed as an 8-shaped inner cavity, and the extrusion screw one and the extrusion screw two are arranged in the 8-shaped inner cavity, so that the powder and the liquid are directly fed into the extrusion cylinder through pipelines, and the pulping and mixing and the extrusion are completed in the extrusion cylinder.

[0025] 2. The transmission gear and the driven gear are in meshing transmission, so that the structure is simpler, and the equipment cost is lower.

[0026] 3. The liquid metering pump and the powder metering pump are arranged on the liquid feeding pipe and the powder feeding pipe respectively, the conveying proportion of the materials is controlled through the respective metering pumps, the degree of automation is higher, and the processing efficiency is higher.

[0027] 4. The electric heater one is arranged on the extrusion cylinder to provide heat for the slurry in the extrusion cylinder, so that the flowability of the slurry is ensured, and the processing efficiency is higher.

[0028] 5. The electric heater two is arranged on the mold head to provide heat for the slurry in the mold head, so that the flowability of the slurry is ensured, and the water evaporation is accelerated, and the pipeline forming is facilitated.

[0029] 6. The electric heaters are arranged on the liquid feeding pipe and the powder feeding pipe to preheat the liquid and the powder, so that the temperature difference of the materials entering the extrusion cylinder is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0030] FIG. 1 is a structural schematic diagram of the high-toughness graphite heat exchange pipe automatic production device; Fig. 1

[0031] FIG. 2 is a sectional profile view of the extrusion cylinder. Fig. 2

[0032] ​​Explanation of reference numerals in the attached drawings: 1-Extrusion cylinder, 2-Die head, 3-Drive motor, 4-Extrusion screw one, 5-Extrusion screw two, 6-Drive chain, 7-Liquid feed pipe, 8-Powder feed pipe, 9-Drive gear, 10-Driven gear, 11-Liquid metering pump, 12-Powder metering pump, 13-Heater one, 14-Medium temperature zone electric heating control unit, 15-Heater two, 16-High temperature zone electric heating control unit, 17-Heater three, 18-Liquid preheating control unit, 19-Heater four, 20-Powder preheating control unit. Detailed Implementation

[0033] The present invention will be further described below with reference to the embodiments, but this should not be construed as limiting the present invention.

[0034] Embodiments of this utility model

[0035] An automated production device for high-toughness graphite heat exchange tubes, as shown in the attached document. Figs. 1-2 As shown, it includes an extrusion cylinder 1, a die head 2 and a drive motor 3, with the die head 2 connected to the extrusion end of the extrusion cylinder 1;

[0036] The cross-sectional profile of the inner cavity of the extrusion cylinder 1 is figure-eight shaped. The cavity is respectively provided with an extrusion screw 4 and an extrusion screw 5. The extrusion screw 4 and the extrusion screw 5 are connected to the drive motor 3 via a transmission chain 6.

[0037] The end of the extrusion cylinder 1 furthest from the die head 2 is connected to a liquid feeding pipe 7 and a powder feeding pipe 8, which are in communication with the interior of the extrusion cylinder 1.

[0038] In this embodiment, when processing graphite heat exchange tubes, the device first connects the liquid feeding pipe 7 to the liquid material conveying device and the powder feeding pipe 8 to the graphite powder conveying device. Then, the power supply of the drive motor 3 is connected and started, driving the extrusion screw 4 and the extrusion screw 5 to rotate inside the extrusion cylinder 1. At this time, the liquid and powder enter the extrusion cylinder 1 respectively, and under the action of the extrusion screw 4 and the extrusion screw 5, they move towards the extrusion end while being stirred and mixed, thereby achieving the purpose of simultaneous mixing and extrusion. The extruded slurry is formed by the die head 2 to obtain a graphite tube.

[0039] Further implementation, for example, is attached. Figs. 1-2 As shown, the first extrusion screw 4 is provided with a transmission gear 9, and the second extrusion screw 5 is provided with a driven gear 10 that meshes with the transmission gear 9.

[0040] In this embodiment, the drive motor 3 drives the extrusion screw 4 to rotate, and the extrusion screw 4 then drives the extrusion screw 5 to rotate after being driven by the transmission gear 9 and the driven gear 10.

[0041] Further implementation, for example, is attached.Figs. 1-2 As shown in the figure, the liquid feeding pipe 7 is provided with a liquid metering pump 11, and the powder feeding pipe 8 is provided with a powder metering pump 12.

[0042] The liquid metering pump 11 and the powder metering pump 12 of the embodiment can adopt conventional metering pumps on the market, and the liquid metering pump 11 and the powder metering pump 12 are both pre-set with feeding parameters, and the proportion of the feeding amount per unit time of the two is consistent with the material proportion of the graphite pipe.

[0043] Further embodiments are shown in the accompanying drawings Figs. 1-2 As shown in the figure, the outer side of the extrusion cylinder 1 near one end of the die head 2 is provided with an electric heater 13, and the electric heater 13 is connected with a medium temperature zone electric heating control unit 14.

[0044] The electric heater 13 of the embodiment can be arranged on the inner side or the outer side of the extrusion cylinder 1, and the power of the electric heater 13 is controlled by the medium temperature zone electric heating control unit 14, so as to control the temperature of the extrusion section of the extrusion cylinder 1.

[0045] Further embodiments are shown in the accompanying drawings Figs. 1-2 As shown in the figure, the outer side of the die head 2 is provided with an electric heater 15, and the electric heater 15 is connected with a high temperature zone electric heating control unit 16.

[0046] The electric heater 15 of the embodiment can be arranged on the inner side or the outer side of the die head 2, and the power of the electric heater 15 is controlled by the high temperature zone electric heating control unit 16, so as to control the temperature of the die head 2.

[0047] Further embodiments are shown in the accompanying drawings Figs. 1-2 As shown in the figure, the outer side of the liquid feeding pipe 7 is provided with an electric heater 17, and the electric heater 17 is connected with a liquid preheating control unit 18.

[0048] The electric heater 17 of the embodiment is arranged on the outer side of the liquid feeding pipe 7, and the power of the electric heater 17 is controlled by the liquid preheating control unit 18, so as to control the temperature of the liquid feeding pipe 7 and achieve the purpose of preheating the liquid material.

[0049] Further embodiments are shown in the accompanying drawings Figs. 1-2 As shown in the figure, the outer side of the powder feeding pipe 8 is provided with an electric heater 19, and the electric heater 19 is connected with a powder preheating control unit 20.

[0050] The electric heater 19 of the embodiment is arranged on the outer side of the powder feeding pipe 8, and the power of the electric heater 19 is controlled by the powder preheating control unit 20, so as to control the temperature of the powder feeding pipe 8 and achieve the purpose of preheating the powder.

[0051] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme of the present application and the present application, can make equivalent substitutions or changes within the technical scope disclosed by the present application, which should be encompassed within the protection scope of the present application.

Claims

1. An automated production device for high-toughness graphite heat exchange tubes, characterized in that: It includes extrusion cylinder (1), die head (2) and drive motor (3), die head (2) is connected to the extrusion end of extrusion cylinder (1); Wherein, the cross section profile of the inner cavity of the extrusion cylinder (1) is 8-shaped, and extrusion screw one (4) and extrusion screw two (5) are respectively arranged in the cavity, and the extrusion screw one (4) and the extrusion screw two (5) are connected with the drive motor (3) through the transmission chain (6); The end of the extrusion cylinder (1) away from the die head (2) is respectively connected with liquid feeding pipe (7) and powder feeding pipe (8), and the liquid feeding pipe (7) and the powder feeding pipe (8) are communicated with the inside of the extrusion cylinder (1).

2. The automatic production device for high-toughness graphite heat exchange tube according to claim 1, characterized in that: The extrusion screw one (4) is provided with a transmission gear (9), and the extrusion screw two (5) is provided with a driven gear (10) engaged with the transmission gear (9).

3. The automatic production device for high-toughness graphite heat exchange tube according to claim 1, characterized in that: The liquid feeding pipe (7) is provided with a liquid metering pump (11), and the powder feeding pipe (8) is provided with a powder metering pump (12).

4. The automatic production device for high-toughness graphite heat exchange tube according to claim 1, characterized in that: The outside of the end of the extrusion cylinder (1) close to the die head (2) is provided with electric heater one (13), and the electric heater one (13) is connected with medium temperature zone electric heating control unit (14).

5. The automatic production device for high-toughness graphite heat exchange tube according to claim 1, characterized in that: The outside of the die head (2) is provided with electric heater two (15), and the electric heater two (15) is connected with high temperature zone electric heating control unit (16).

6. The automatic production device for high-toughness graphite heat exchange tube according to claim 1, characterized in that: The outside of the liquid feeding pipe (7) is provided with electric heater three (17), and the electric heater three (17) is connected with liquid preheating control unit (18).

7. The automatic production device for high-toughness graphite heat exchange tube according to claim 1, characterized in that: The outside of the powder feeding pipe (8) is provided with electric heater four (19), and the electric heater four (19) is connected with powder preheating control unit (20).

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