A raw material pulverizing device for producing cetyl alcohol

Abstract

The utility model belongs to the technical field of crushing equipment, concretely relates to structure optimization of crushing device, a raw material crushing device for producing hexacosanol, including the crushing box, the upper end of crushing box is provided with the feed port, and the lower end is provided with the discharge gate, be provided with the crushing structure in the crushing box, still include cooling structure, cooling structure includes the extension pipe with feed port connection for conveying material, the precooling pipe of being set up in extension pipe for the low temperature gas circulation, the circulation direction of low temperature gas is identical with the circulation direction of material, the precooling pipe has the gas inlet and the gas outlet, the gas inlet is connected with low temperature gas generating equipment, and the gas outlet is towards crushing structure, the utility model discloses through structure optimization, in order to improve the problem that wax is easy to melt and adhere in the device in the process of treating sugar cane wax in crushing box.

Description

Technical Field

[0001] This utility model belongs to the technical field of pulverizing equipment, specifically involving the structural optimization of pulverizing devices. Background Technology

[0002] Sugarcane wax is a type of natural wax and is currently the most important and economical raw material for the industrial production of higher alcohols. Sugarcane wax is a byproduct of the sugarcane sugar refining process and contains about 40-50% higher fatty alcohols, including a considerable proportion of hexacosanol.

[0003] In the production process of hexacosanol, sugarcane wax typically needs to be pulverized or crushed, which is one of the key steps in the raw material pretreatment stage. The reason is that sugarcane wax is mostly in the form of blocks, flakes, or coarse particles in its original state. Pulverization significantly increases its specific surface area, resulting in higher reaction / mass transfer efficiency in subsequent steps.

[0004] For the crushing of wax raw materials, since the requirements for particle size are not high, a commonly used hammer mill can be used. For example, document CN222490342U discloses a multi-stage crushing device for the production of chlorinated paraffin, including a crushing box, a feeding hopper fixedly connected to the top of the crushing box, a discharge hopper fixedly connected to the bottom of the crushing box, a crushing mechanism installed inside the crushing box, and a receiving mechanism installed at the bottom of the discharge hopper. The crushing structure includes a drive shaft, and crushing blades are fixedly connected to the surface of the drive shaft.

[0005] Because the pulverizer continuously generates heat during the pulverizing process, and chlorinated paraffin has a melting point as high as 95-120℃ and a softening point ≥90℃, it is not easy to melt due to the heat of pulverization; however, if sugarcane wax is directly pulverized using this pulverizer, since its melting point is only 76-82℃ and its softening point is even lower, the sugarcane wax is easy to adhere to the pulverizing structure, requiring frequent shutdowns for internal cleaning. Utility Model Content

[0006] To address the aforementioned problems, the purpose of this invention is to provide a raw material crushing device for the production of hexacosanol. Through structural optimization, it aims to improve the problem that sugarcane wax easily melts, clumps, and adheres to the device during the crushing process.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows:

[0008] A raw material pulverizing device for producing hexacosanol includes a pulverizing chamber with a feed inlet at the upper end and a discharge outlet at the lower end; a pulverizing structure is disposed inside the pulverizing chamber; and a cooling structure is also included; the cooling structure includes an extension pipe connected to the feed inlet for conveying material, and a precooling pipe disposed inside the extension pipe for circulating low-temperature gas, the circulation direction of the low-temperature gas being consistent with the circulation direction of the material; the precooling pipe has an inlet and an outlet, the inlet being connected to a low-temperature gas generating device, and the outlet facing the pulverizing structure.

[0009] As a further preferred embodiment of the present invention, the cooling structure further includes a nozzle installed on the inner wall of the crushing chamber, and an air supply pipe disposed on the outer wall of the crushing chamber and connected to the nozzle; the opening of the nozzle faces the crushing structure.

[0010] As a further preferred embodiment of this invention, the end of the gas delivery pipe away from the nozzle is connected to the cryogenic gas generating device.

[0011] As a further preferred embodiment of the present invention, the cooling structure further includes a guide plate installed on the inner wall of the crushing chamber and located at the upper end of the nozzle.

[0012] As a further preferred embodiment of this invention, the outer diameter of the precooling tube is ≤ one-half of the inner diameter of the extension tube.

[0013] As a further preferred embodiment of this utility model, it also includes a lifting structure; the lifting structure includes a fixed frame, a slide rail disposed on the fixed frame and oriented in the same direction as the extension direction of the extension tube, and a slide frame slidably connected to the slide rail and used to fix the precooling tube.

[0014] As a further preferred embodiment of this invention, the air inlet is connected to the cryogenic gas generating device via a telescopic corrugated pipe.

[0015] As a further preferred embodiment of the present invention, the lifting structure further includes a slider disposed on the sliding frame and slidably connected to the slide rail, an internal threaded hole disposed on the sliding frame and aligned with the direction of the slide rail, an external threaded rod screwed to the internal threaded hole, and a motor for driving the external threaded rod to rotate.

[0016] As a further preferred embodiment of the present invention, the pulverizing structure includes a rotating shaft rotatably connected to the inner wall of the pulverizing chamber and perpendicular to the material flow direction, and pulverizing blades disposed on the rotating shaft; the opening of the nozzle faces the pulverizing blades.

[0017] As a further preferred embodiment of this utility model, the low-temperature gas generating device includes a refrigeration unit, a cold air generator, and a distribution pipe; the branches of the distribution pipe are respectively connected to the pre-cooling pipe and the gas transmission pipe.

[0018] The beneficial effects of this utility model are:

[0019] This invention employs an axial pre-cooling and radial forced cooling cooling structure. The top vertical air supply pre-cooling pipe uses laminar flow cold air to achieve enveloping pre-cooling of the material, eliminating the feeding temperature gradient. The high-speed airflow generated by the nozzle penetrates the crushing blade-material impact zone in a directional manner, keeping the local hot spot temperature below the melting point of sugarcane wax, significantly reducing heat accumulation and overcoming the problem of hot melt adhesion during sugarcane wax crushing. Attached Figure Description

[0020] Appendix Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] Appendix Figure 2 This is a cross-sectional structural diagram of the present invention.

[0022] Appendix Figure 3 Appendix to this utility model Figure 2 A schematic diagram of the local structure.

[0023] Appendix Figure 4 This is a three-dimensional structural diagram of the lifting structure of this utility model.

[0024] Appendix Figure 5 Appendix to this utility model Figure 2 A partial structural diagram (B).

[0025] Figure description: 100 crushing box, 200 crushing structure, 300 cooling structure, 400 lifting structure, 500 cryogenic gas generator;

[0026] Inlet 110, outlet 120;

[0027] Rotating shaft 210, crushing blade 220;

[0028] Extension pipe 310, precooling pipe 320, nozzle 330, gas delivery pipe 340, guide plate 350;

[0029] Air inlet 321, air outlet 322, telescopic bellows 323;

[0030] Fixed frame 410, slide rail 420, sliding frame 430, slider 440, internal threaded hole 450, external threaded rod 460, motor 470. Detailed Implementation

[0031] In the description of this utility model, it should be understood that the terms "upper", "lower", "inner", "outer", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use, or the orientation or positional relationship that is commonly understood by those skilled in the art. They are only used to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component 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 utility model.

[0032] Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0033] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] Example 1

[0035] As attached Figure 1 and attached Figure 2 As shown, this embodiment provides a raw material pulverizing device for producing hexacosanol, including a pulverizing box 100, a pulverizing structure 200, and a cooling structure 300.

[0036] The crushing box 100 has a crushing chamber inside, and the crushing structure 200 is located inside the crushing chamber. The upper and lower ends of the crushing box 100 are respectively provided with a feed inlet 110 and a discharge outlet 120 that communicate with the crushing chamber. The crushing structure 200 is provided inside the crushing box 100.

[0037] The crushing structure 200 can be directly referenced from existing equipment. Specifically, it can consist of a rotating shaft 210 rotatably connected to the inner wall of the crushing chamber 100 and perpendicular to the material flow direction, with crushing blades 220 mounted on the rotating shaft 210. The rotating shaft 210 is connected to the crushing chamber 100 via existing connecting parts such as bearings. Additionally, a mechanical sealing element (such as a double-end face cartridge-type unloading seal structure) to enhance airtightness is required. To enhance anti-sticking properties, the crushing blades 220 can be coated with a commonly used anti-sticking coating (such as a diamond coating).

[0038] The cooling structure 300 includes an extension pipe 310 connected to the feed inlet 110 for conveying materials, and a precooling pipe 320 disposed in the extension pipe 310 for the flow of low-temperature gas, the flow direction of the low-temperature gas being consistent with the flow direction of the materials; the precooling pipe 320 has an air inlet 321 and an air outlet 322, the air inlet 321 being connected to the low-temperature gas generating device 500, and the air outlet 322 facing the crushing structure 200.

[0039] Generally, the slippery and low-melting-point properties of sugarcane wax pose a challenge to its pulverization. To prevent excessively high temperatures inside the pulverizing chamber from causing the sugarcane wax to melt and clump, the key step is to control the temperature below the wax's softening point. The pre-cooling tube 320 is nested within the extension tube 310, utilizing the annular space as the material falls to deliver air. The airflow moves in the same direction as the material, which not only quickly cools the wax fed into the pulverizing chamber but also creates a stable air curtain at the feed inlet of the pulverizing chamber, preventing pulverized wax powder from flying out from the feed inlet 110. The extension tube 310 extends the pre-cooling path and reduces powder flight.

[0040] Specifically, to avoid interfering with the material feeding into the crushing chamber, the outer diameter of the precooling pipe 320 must be less than or equal to half the inner diameter of the extension pipe 310. The temperature of the low-temperature gas introduced into the precooling pipe 320 should be between -3℃ and 0℃, and the wind speed should be controlled within 10-18 m / s. To adapt to low-temperature conditions, the precooling pipe 320 can be made of low-temperature resistant materials such as titanium alloy.

[0041] Furthermore, in order to better guide the low-temperature gas, existing structures such as pressure equalization plates and flow guide grids can be added inside the precooling pipe 320 to guide the airflow vertically downward.

[0042] The cryogenic gas generating equipment 500 can be a system formed by any commercially available equipment or a combination of commonly used equipment. Considering economic costs, compressor refrigeration is preferable. The structure generally includes a refrigeration unit, a cold air generator, and distribution pipes. In addition to the above key components, structures such as insulation layers, dehumidifiers, and condensate traps can be added for dehumidification and frost prevention.

[0043] Example 2

[0044] This embodiment optimizes the structure based on Embodiment 1 to enhance the cooling effect on the grinding chamber, especially the grinding structure 200. (See attached...) Figure 2 and attached Figure 3 As shown, the specific structure is as follows: the cooling structure 300 also includes a nozzle 330 installed on the inner wall of the crushing box 100, and an air supply pipe 340 provided on the outer wall of the crushing box 100 and connected to the nozzle 330; the opening of the nozzle 330 faces the crushing blade 220.

[0045] Preferably, before the pulverizing blade 220 comes into contact with the wax to be pulverized, the low-temperature gas ejected from the nozzle 330 cools the pulverizing blade 220. Therefore, the nozzle 330 is fixed at the front end in the rotation direction of the pulverizing blade 220.

[0046] To avoid interference between the low-temperature gas in the nozzle 330 and the gas ejected from the precooling pipe 320, the angle between the flow direction of the low-temperature gas in the nozzle 330 and the flow direction of the low-temperature gas in the precooling pipe 320 should be controlled within the range of 60° to 90°. Therefore, the nozzle 330 is preferably installed at an angle downwards.

[0047] In this embodiment, the end of the gas supply pipe 340 furthest from the nozzle 330 is connected to the cryogenic gas generator 500. However, the main difference between this gas and the gas supplied to the precooling pipe 320 is that the gas temperature ejected from the nozzle 330 should be -8℃ to -5℃, and the wind speed should be 20-30 m / s. This difference in parameters is mainly due to the larger volume and higher temperature of the pulverizing chamber.

[0048] To ensure precise delivery of cryogenic gas, the cryogenic gas generator 500 can also be equipped with a distribution box to accurately distribute the total cold air to the branch pipes while ensuring pressure balance. The distribution box is a device well-known to those skilled in the art, and its core components include a flow stabilizing chamber, a porous pressure equalizing plate, a flow guide cone, and a distribution valve plate. It can also be equipped with a pressure sensor to detect differential pressure and a PID controller to dynamically adjust the opening of the distribution valve plate, etc., which will not be described in detail in this embodiment.

[0049] As a further preferred embodiment, the cooling structure 300 also includes a guide plate 350 installed on the inner wall of the pulverizing chamber 100 and located above the nozzle 330. The main function of the guide plate 350 is to protect the nozzle 330.

[0050] Example 3

[0051] This embodiment optimizes the structure based on Embodiment 1 to further reduce the interference of the precooling pipe 320 on the feeding process, especially when dealing with large-volume, blocky raw materials. The precooling pipe 320 can be raised to ensure smooth feeding. (See attached...) Figure 2 Appendix Figure 4 and attached Figure 5 As shown, the specific structure is as follows:

[0052] The crushing device also includes a lifting structure 400; the lifting structure 400 includes a fixed frame 410, a slide rail 420 disposed on the fixed frame 410 and oriented in the same direction as the extension direction of the extension tube 310, and a sliding frame 430 slidably connected to the slide rail 420 and used to fix the precooling tube 320. Specifically, the lifting structure 400 also includes a slider 440 disposed on the sliding frame 430 and slidably connected to the slide rail 420, an internal threaded hole 450 disposed on the sliding frame 430 and oriented in the same direction as the slide rail 420, an external threaded rod 460 screwed to the internal threaded hole 450, and a motor 470 for driving the external threaded rod 460 to rotate.

[0053] The motor 470 drives the external threaded rod 460 to rotate. The slider 440 on the sliding frame 430 is driven to rise / fall by the external threaded rod 460 under the limit of the slide rail 420, and the precooling tube 320 can be stopped at any suitable height. The upper end of the sliding frame 430 is provided with a clamp to fix the upper end of the precooling tube 320, thereby ensuring sufficient fixing strength.

[0054] Since the precooling pipe 320 has a lifting function, it needs to be equipped with a telescopic bellows 323. The telescopic bellows 323 can be a metal bellows, and its extension and retraction direction is consistent with the lifting and retraction direction of the precooling pipe 320. Specifically, one end of the telescopic bellows 323 is connected to the air inlet 321 through a flange or other common structure, and the other end is connected to a branch of the cryogenic gas generator 500.

[0055] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A raw material pulverizing device for producing hexacosanol, comprising a pulverizing chamber (100), wherein the upper end of the pulverizing chamber (100) is provided with a feed inlet (110) and the lower end is provided with a discharge outlet (120); a pulverizing structure (200) is provided inside the pulverizing chamber (100); characterized in that: It also includes a cooling structure (300); the cooling structure (300) includes an extension pipe (310) connected to the feed port (110) for conveying materials, and a precooling pipe (320) disposed in the extension pipe (310) for the flow of low-temperature gas, the flow direction of the low-temperature gas being consistent with the flow direction of the materials; the precooling pipe (320) has an air inlet (321) and an air outlet (322), the air inlet (321) being connected to a low-temperature gas generating device (500), and the air outlet (322) facing the crushing structure (200).

2. The raw material pulverizing device for producing hexacosanol according to claim 1, characterized in that: The cooling structure (300) also includes a nozzle (330) installed on the inner wall of the crushing box (100) and an air supply pipe (340) provided on the outer wall of the crushing box (100) and connected to the nozzle (330); the opening of the nozzle (330) faces the crushing structure (200).

3. The raw material pulverizing device for producing hexacosanol according to claim 2, characterized in that: The end of the gas delivery pipe (340) away from the nozzle (330) is connected to the cryogenic gas generating device (500).

4. A raw material pulverizing device for producing hexacosanol according to claim 2, characterized in that: The cooling structure (300) also includes a guide plate (350) installed on the inner wall of the crushing box (100) and located at the upper end of the nozzle (330).

5. A raw material pulverizing device for producing hexacosanol according to claim 1, characterized in that: The outer diameter of the precooling pipe (320) is less than or equal to half the inner diameter of the extension pipe (310).

6. A raw material pulverizing device for producing hexacosanol according to claim 1, characterized in that: It also includes a lifting structure (400); the lifting structure (400) includes a fixed frame (410), a slide rail (420) disposed on the fixed frame (410) and oriented in the same direction as the extension direction of the extension tube (310), and a slide frame (430) slidably connected to the slide rail (420) and used to fix the precooling tube (320).

7. A raw material pulverizing device for producing hexacosanol according to claim 6, characterized in that: The air inlet (321) is connected to the cryogenic gas generator (500) via a telescopic bellows (323).

8. A raw material pulverizing device for producing hexacosanol according to claim 6, characterized in that: The lifting structure (400) further includes a slider (440) disposed on the sliding frame (430) and slidably connected to the slide rail (420), an internal threaded hole (450) disposed on the sliding frame (430) and aligned with the direction of the slide rail (420), an external threaded rod (460) screwed to the internal threaded hole (450), and a motor (470) for driving the external threaded rod (460) to rotate.

9. A raw material pulverizing device for producing hexacosanol according to claim 2, characterized in that: The crushing structure (200) includes a rotating shaft (210) rotatably connected to the inner wall of the crushing box (100) and perpendicular to the flow direction of the material, and crushing blades (220) disposed on the rotating shaft (210); the opening of the nozzle (330) faces the crushing blades (220).

10. A raw material pulverizing device for producing hexacosanol according to claim 3, characterized in that: The low-temperature gas generating device (500) includes a refrigeration unit, a cold air generator, and a distribution pipe; the branches of the distribution pipe are respectively connected to the precooling pipe (320) and the gas transmission pipe (340).

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