Supercritical drying kettle with laminate binding structure

Abstract

The utility model discloses a supercritical drying kettle with a laminate binding structure, which comprises a kettle body, an inner barrel and a plurality of laminates, the at least two layers of plate binding layers are sequentially arranged on the outer side wall of the inner cylinder in a wrapping manner; a kettle cover; a bottom head; the heating and cooling assembly comprises a jacket; the double-helix channels are spirally arranged in the jacket in parallel from one end of the kettle body to the other end of the kettle body, the upper ends of the double-helix channels are communicated with each other, and the lower ends of the double-helix channels are not communicated with each other; a heating box; a cooling box; and the thermal insulation layer is arranged on the periphery of the jacket. The utility model further aims to provide the supercritical drying kettle with the laminated plate binding structure, the kettle body adopts the laminated plate binding structure with at least two laminated plate binding layers arranged outside the inner barrel, so that the kettle body has good corrosion resistance and pressure bearing capacity, and the service life of the kettle body can be effectively prolonged; in the heating and cooling assembly, the jacket is independently arranged on the outer side wall of the kettle body, and heating oil in the jacket cannot leak, so that the production safety is effectively ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of layer board binding structure supercritical drying kettle. BACKGROUND

[0002] Supercritical drying technology is widely used in many fields such as nanomaterial preparation, aerogel production, food and drug industry and composite material preparation. In the supercritical drying process, the drying kettle as the core equipment, the rationality of its structure and the performance directly affect the drying effect and production efficiency. The Chinese patent with application number 201721662709.3 discloses a drying kettle for producing aerogel by alcohol supercritical method, which comprises a kettle body and a kettle cover with a sealing structure. The drying kettle is connected to the external vacuum pumping unit, heating and cooling unit and alcohol cooling and recycling unit through pipelines and valves. The interlayer structure of the kettle body is connected to the heating and cooling unit through the oil inlet pipe and the interlayer oil outlet. The heating and cooling structure is complex and not easy to maintain. During long-term use, equipment aging and seal damage can cause heating oil to leak into the kettle body, resulting in loss of raw materials and products. SUMMARY

[0003] An object of the present utility model is to solve at least the above problems and provide at least the advantages to be explained later.

[0004] Another object of the present utility model is to provide a layer board binding structure supercritical drying kettle. The kettle body adopts a layer board binding structure with at least two layer board binding layers outside the inner cylinder, which has good corrosion resistance and pressure bearing capacity, effectively prolonging the service life of the kettle body. The heating and cooling assembly is used for rapid heating or cooling treatment of the kettle body. The jacket is independently arranged on the outer sidewall of the kettle body, facilitating maintenance. On the basis of enhanced pressure resistance of the kettle body, the heating oil in the jacket cannot leak, effectively ensuring production safety.

[0005] To achieve these objects and other advantages according to the present utility model, a layer board binding structure supercritical drying kettle is provided, which comprises:

[0006] The kettle body comprises an inner cylinder. At least two layer board binding layers are sequentially arranged on the outer sidewall of the inner cylinder. Any layer board binding layer comprises at least two layer boards, and the edges of the at least two layer boards are mutually embedded and welded. The embedded and welded points between adjacent two layer board binding layers are mutually staggered. The kettle cover is connected to the upper end of the inner cylinder through the end flange. The bottom head is welded to the lower end of the inner cylinder.

[0007] The heating and cooling assembly comprises a jacket, which is sleeved on the outer sidewall of the kettle body; double helical channels are arranged in parallel in the jacket from one end of the kettle body to the other end of the kettle body, and the upper ends of the double helical channels are communicated with each other, and the lower ends of the double helical channels are not communicated with each other; a heating tank is communicated with the lower end of channel I of the double helical channels through a heating pipe, and the inlet of the heating tank is communicated with the lower end of channel II of the double helical channels through a liquid return pipe I; a cooling tank is communicated with the lower end of channel I through a cooling pipe, and the inlet of the cooling tank is communicated with the lower end of channel II of the double helical channels through a liquid return pipe II; and a heat preservation layer is arranged on the outer periphery of the jacket.

[0008] Preferably, the three-way temperature control valve is arranged on the outlet pipe, and the two outlets of the three-way temperature control valve are communicated with the liquid return pipe I and the liquid return pipe II respectively.

[0009] Preferably, the pressure sensor I and the pressure sensor II are arranged in the kettle body and the jacket respectively.

[0010] Preferably, the jacket wrapping layer II comprises at least two layer plates II, and the edges of the at least two layer plates II are embedded and welded with each other.

[0011] Preferably, the edges of the two sides of any layer plate are in a sawtooth structure or a wave structure; and the edges of the two sides of any layer plate II are in a sawtooth structure or a wave structure.

[0012] Preferably, the heat preservation layer is made of nano aerogel felt.

[0013] The utility model at least has following beneficial effects:

[0014] The kettle body adopts the layer plate wrapping structure that at least two layer plates are arranged outside the inner cylinder, and has good corrosion resistance and pressure bearing capacity, so that the service life of the kettle body is effectively prolonged.

[0015] The heating and cooling assembly is used for rapid heating treatment or cooling treatment of the kettle body, the jacket is independently arranged on the outer sidewall of the kettle body, maintenance is facilitated, and the heating oil in the jacket cannot leak on the basis of the enhanced pressure resistance of the kettle body, so that the production safety is effectively ensured.

[0016] The application of the heating tank and the cooling tank can improve the switching efficiency between the heating treatment and the cooling treatment of the kettle body, reduce the waiting time, and further improve the overall production efficiency.

[0017] Other advantages, objects and features of the utility model will be embodied partly through the following description, and will be understood by those skilled in the art through research and practice of the utility model. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the supercritical drying autoclave with the layered wrapping structure described in one embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the cross-section of the vessel body in one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the supercritical drying autoclave with the layered wrapping structure described in another embodiment of the present invention;

[0021] Figure 4 This is a structural schematic diagram of the cross-section of the vessel body described in another embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the structure of the interlocking welding point between two adjacent layers or between two adjacent layers II in one embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure of the interlocking welding point between two adjacent layers or between two adjacent layers II in another embodiment of the present invention. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0025] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0026] like Figure 1 , 2 As shown, this utility model provides a supercritical drying autoclave with a layered wrapping structure, comprising:

[0027] The kettle body 1 comprises an inner cylinder 101, at least two layers of layer board wrapping layers 102 wrapped on the outer side wall of the inner cylinder in sequence, any layer board wrapping layer comprising at least two layer boards, the edges of the at least two layer boards being embedded and welded with each other, and the embedded and welded points 1021 between the adjacent two layers of layer board wrapping layers being arranged staggeredly with each other; a kettle cover 103 connected to the upper end of the inner cylinder through an end flange; a bottom head 104 welded at the lower end of the inner cylinder; a heating and cooling assembly 2 comprising a jacket 201 sleeved on the outer side wall of the kettle body; double helical channels 202 parallelly and helically arranged in the jacket from one end of the kettle body to the other end of the kettle body, the upper ends of the double helical channels being arranged in communication with each other, and the lower ends of the double helical channels not being arranged in communication with each other; a heating tank 203, the hot oil outlet of which being communicated to the lower end of channel I of the double helical channels through a heating pipe, and the hot oil inlet of the heating tank being communicated to the lower end of channel II of the double helical channels through a liquid return pipe I; a cooling tank 204, the cold oil outlet of which being communicated to the lower end of channel I through a cooling pipe, and the cold oil inlet of the cooling tank being communicated to the lower end of channel II of the double helical channels through a liquid return pipe II; and a heat preservation layer 205 arranged on the outer periphery of the jacket. In the scheme, the kettle body adopts the layer board wrapping structure of the inner cylinder externally provided with at least two layers of layer board wrapping layers, has good corrosion resistance and pressure bearing capacity, and can effectively prolong the service life of the kettle body. In actual application, the inner cylinder can be made of high-strength alloy steel by rolling and welding, and the thickness of the inner cylinder can be reasonably selected according to the design pressure and the use environment. The at least two layers of layer board wrapping layers are wrapped on the outer part of the inner cylinder in sequence, tightly adhere to each other, and form an integrated pressure bearing structure, and each layer of layer board is formed by stamping high-quality steel plate, the edges of the at least two layer boards in any layer board wrapping layer are embedded and welded with each other, form a tight mechanical connection, effectively prevent the relative sliding and misplacement between the layer boards, improve the pressure bearing strength, and prolong the service life. The heating and cooling assembly is used for rapid heating treatment or cooling treatment of the kettle body. The jacket is independently arranged on the outer side wall of the kettle body, is convenient to maintain, and the heating oil or cooling oil in the jacket will not leak on the basis of the enhanced pressure resistance of the kettle body, effectively ensuring the production safety. In the heating operation process, the double helical channels promote the heating oil therein to helically rise from the lower end of channel I to the upper end of channel I, and then helically descend from the upper end of channel II to the lower end of channel II, which is beneficial to the directional and uniform flow of the heating oil in the jacket, and then rapidly realizes the heating or cooling treatment of the kettle body. In addition, the heating tank is used for carrying and heating the oil body, so that it is always kept at a certain temperature, and the heating oil is conveniently and rapidly input into the jacket for heating operation. The cooling tank is used for carrying and cooling the oil body, so that it is always kept at a certain temperature, after the heating operation is completed, the heating oil circulation injection into the jacket can be directly stopped, and the cooling oil is injected into the lower end of channel I at the same time, the heating oil is gradually replaced, and the cooling operation is performed. In this process, the arrangement of the double helical channels is also helpful to the alternate replacement operation of the heating oil and the cooling oil, avoiding excessive mixing of the heating oil and the cooling oil.In summary, the application of the heating tank and the cooling tank can improve the switching efficiency between the heating treatment and the cooling treatment of the kettle body, reduce the waiting time, and further improve the overall production efficiency.

[0028] As shown in Figure 3 , in one preferred embodiment, it comprises: a three-way temperature control valve 206, the inlet of which is connected to the outlet pipe of the lower end of passage II, and the two outlets of the three-way temperature control valve are respectively connected to the liquid return pipe I and the liquid return pipe II; and a pump 207 arranged on the outlet pipe. The temperature control valve can accurately and efficiently control the switching between the heating operation and the cooling operation, thereby ensuring the product quality.

[0029] In one preferred embodiment, it further comprises: a pressure sensor I and a pressure sensor II, which are respectively arranged in the kettle body and the jacket. The pressure sensor I is arranged in the kettle body to monitor the pressure change in the kettle body in real time; and the pressure sensor II is arranged in the jacket to monitor the pressure of the heating and cooling medium in the jacket in real time.

[0030] As shown in Figure 4 , in one preferred embodiment, it further comprises: at least one jacket wrapping layer II 208 arranged between the jacket layer and the insulation layer, and the at least one jacket wrapping layer comprises at least two layer plates II, and the edges of the at least two layer plates II are embedded and welded with each other. The at least one jacket wrapping layer II can enhance the structural strength of the jacket and further improve the sealing property of the jacket, thereby effectively preventing the leakage of the heating oil and the cooling oil.

[0031] As shown in Figure 5 , 6 , in one preferred embodiment, the edges of the two sides of any layer plate are in a sawtooth structure or a wavy structure; and the edges of the two sides of any layer plate II are in a sawtooth structure or a wavy structure.

[0032] In one preferred embodiment, the insulation layer is made of nano aerogel felt.

[0033] Although the embodiments of the present application have been disclosed as above, they are not limited to the applications listed in the specification and the embodiments, and can be fully applied to various fields suitable for the present application. For those skilled in the art, other modifications can be easily realized, and therefore the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A supercritical drying autoclave with a layered wrapping structure, characterized in that, include: The vessel body includes an inner cylinder; at least two layers of sheathing plates sequentially wrapped around the outer wall of the inner cylinder, each layer of sheathing plate including at least two plates, the edges of the at least two plates being interlocked and welded together, and the interlocking weld points between adjacent layers of sheathing plate being staggered; a vessel lid connected to the upper end of the inner cylinder via an end flange; and a bottom end cap welded to the lower end of the inner cylinder. The heating and cooling assembly includes a jacket fitted onto the outer wall of the vessel body; a double helical channel arranged in parallel spirals from one end of the vessel body to the other end within the jacket, with the upper ends of the double helical channels interconnected and the lower ends not interconnected; a heating chamber, whose hot oil outlet is connected to the lower end of channel I of the double helical channel via a heating pipe, and whose hot oil inlet is connected to the lower end of channel II of the double helical channel via return pipe I; a cooling chamber, whose cold oil outlet is connected to the lower end of channel I via a cooling pipe, and whose cold oil inlet is connected to the lower end of channel II of the double helical channel via return pipe II; and a heat insulation layer disposed on the outer periphery of the jacket.

2. The supercritical drying autoclave with a layered wrapping structure as described in claim 1, characterized in that, include: The three-way temperature control valve has its inlet connected to the outlet pipe at the lower end of channel II, and its two outlets are respectively connected to return pipe I and return pipe II. The pump is installed on the outlet pipe.

3. The supercritical drying autoclave with a layered wrapping structure as described in claim 1, characterized in that, Also includes: Pressure sensor I and pressure sensor II are respectively installed inside the vessel body and the jacket.

4. The supercritical drying autoclave with a layered wrapping structure as described in claim 1, characterized in that, Also includes: At least one jacket wrapping layer II is disposed between the jacket layer and the insulation layer. The at least one jacket wrapping layer includes at least two layer plates II, and the edges of the at least two layer plates II are interlocked and welded together.

5. The supercritical drying autoclave with a layered wrapping structure as described in claim 4, characterized in that, The edges on both sides of any shelf have a serrated or wavy structure; the edges on both sides of any shelf II have a serrated or wavy structure.

6. The supercritical drying autoclave with a layered wrapping structure as described in claim 1, characterized in that, The insulation layer is made of nano-aerogel felt.

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