Agricultural and forestry solid waste lignin hydrolysis tank with spiral stirring structure

Abstract

The utility model relates to the technical field of hydrolysis tanks, in particular to an agriculture and forestry solid waste lignin hydrolysis tank with a spiral stirring structure, which comprises a hydrolysis tank body, and a left servo motor and a right servo motor which are mutually symmetrical are fixedly mounted at the top of the hydrolysis tank body. The tail end of an output shaft of the servo motor is connected with a long shaft which is vertically arranged and extends into the hydrolysis tank body through a coupler, a spiral stirring blade in a spiral shape is fixedly mounted on a rod body of the long shaft located in the hydrolysis tank body, and an attaching ring is fixedly mounted on a rod body at the bottom end of the long shaft; a horizontal supporting rod is fixedly installed on the inner wall of the bottom of the hydrolysis tank body, a left supporting ring and a right supporting ring which are mutually symmetrical are fixedly installed on the top face of the horizontal supporting rod, annular grooves are formed in the supporting rings, a rod body at the bottom end of the long shaft is located in the annular grooves and rotationally connected with the annular grooves, and the upper surfaces of the supporting rings are covered with attaching rings. The reaction kettle disclosed by the utility model is convenient for stirring operation, has better stability and is beneficial to hydrolysis operation.

Description

Technical Field

[0001] This utility model relates to the field of hydrolysis tank technology, specifically to a hydrolysis tank for lignin in agricultural and forestry solid waste with a spiral stirring structure. Background Technology

[0002] With the rapid development of the agricultural and forestry industries, the output of agricultural and forestry waste is increasing day by day. Agricultural and forestry solid waste contains a large amount of lignin. By using hydrolysis technology to convert lignin into high-value-added products, we can not only realize the resource utilization of waste, but also reduce environmental pollution. When carrying out the hydrolysis of lignin in agricultural and forestry solid waste, corresponding hydrolysis tanks are usually used. There are many types of hydrolysis tanks on the market, most of which are equipped with a stirring structure.

[0003] Utility model patent CN205379884U discloses a hydrolysis tank, including a tank body, a feed pipe and a feed inlet at the top of the tank body, a discharge outlet at the bottom of the tank body, a stirring shaft with stirring blades inside the tank body, the stirring shaft being drivenly connected to a drive device located above the tank body, a hollow jacket formed on the tank body, and a cooling water inlet and a cooling water outlet connected to the jacket on the tank body, a temperature detection device and a pH value detection device on the tank body, and a water spray pipe with multiple cleaning nozzles located inside the tank body, the water spray pipe being annular and arranged in two layers at intervals inside the tank body, and a cleaning water inlet pipe extending outside the tank body connected to the water spray pipe. The hydrolysis tank of this utility model, by setting up a water spray pipe with cleaning nozzles inside the tank body, can use the cleaning nozzles to rinse the inner wall of the tank after production, ensuring a cleaning effect.

[0004] While this technical solution has the advantage of rinsing the inner wall of the tank with a cleaning nozzle after production, ensuring a cleanliness effect, most current lignin hydrolysis tanks, although using a motor to drive the stirring shaft and blades during mixing operations, lack corresponding support components at the bottom of the stirring shaft. Since the stirring shaft and blades have a certain weight, the lack of support components causes this weight to accumulate on the motor, potentially damaging it and affecting the rotation efficiency of the stirring shaft. Therefore, we propose a lignin hydrolysis tank for agricultural and forestry solid waste with a spiral stirring structure. Utility Model Content

[0005] The purpose of this invention is to provide a lignin hydrolysis tank for agricultural and forestry solid waste with a spiral stirring structure, so as to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A lignin hydrolysis tank for agricultural and forestry solid waste with a spiral stirring structure includes a tank body. Two symmetrical servo motors are fixedly installed on the top of the tank body. The output shafts of the servo motors are connected via couplings to a vertically oriented long shaft extending into the tank body. Spiral stirring blades are fixedly installed on the long shaft within the tank body. A fitting ring is fixedly installed on the bottom end of the long shaft. A horizontal support rod is fixedly installed on the bottom inner wall of the tank body. Two symmetrical support rings are fixedly installed on the top surface of the horizontal support rod. An annular groove is provided within each support ring. The bottom end of the long shaft is located within the annular groove and rotatably connected to it. The fitting ring covers the upper surface of the support ring.

[0008] Preferably, a through hole is provided at the center of the bottom wall of the annular groove, and the bottom of the through hole is connected to the body of the hydrolysis tank.

[0009] This feature allows the liquid entering the annular groove to eventually drain out through the through-hole.

[0010] Preferably, a conical cylinder is fixedly installed at the bottom of the hydrolysis tank, and the horizontal support rod is fixedly installed on the inner wall of the conical cylinder.

[0011] Preferably, the conical cylinder is funnel-shaped, and the plane containing the inner wall of the conical cylinder is inclined downward at 45° to 60°.

[0012] Preferably, a discharge pipe is fixedly installed at the bottom end of the conical cylinder, and a discharge valve is fixedly installed on the discharge pipe.

[0013] Preferably, an inlet pipe for liquid introduction is fixedly installed at the top of the hydrolysis tank, and a raw material pipe for raw material introduction is fixedly installed at the top of the hydrolysis tank, with a top cover hinged to the top surface of the raw material pipe.

[0014] Preferably, the bottom of the hydrolysis tank is fixedly equipped with multiple support legs, and the bottom end of each support leg is fixedly equipped with a support base.

[0015] Preferably, a temperature-controlled electric heater is fixedly installed on the outer cylinder of the hydrolysis tank, and multiple internal guide plates are fixedly installed on the inner wall of the hydrolysis tank.

[0016] This feature allows for heating using a temperature-controlled electric heater and guides material flow using an internal baffle, improving material mixing uniformity and reaction efficiency.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This utility model achieves effective support for the long shaft and spiral mixing blades by setting the output shaft of the servo motor to connect to the long shaft, and the bottom end of the long shaft is rotatably connected to the annular groove inside the support ring. The bottom end is fixed and fitted to cover the support ring, which realizes effective support for the long shaft and spiral mixing blades, distributes the weight of the mixing components, avoids all accumulation on the motor, prevents the motor from being damaged due to excessive load, and ensures stable rotation of the long shaft, ensuring that the spiral mixing blades continuously and efficiently mix the materials, thereby improving the mixing effect and the service life of the equipment.

[0019] 2. This utility model sets the bottom of the hydrolysis tank into a conical cylinder structure with the inner wall sloping downwards, and installs a discharge pipe and discharge valve at the bottom end, so that the material can be discharged smoothly and quickly from the tank after the reaction is completed, avoiding material residue and improving discharge efficiency; at the same time, the horizontal support rod is installed on the inner wall of the conical cylinder, which does not affect the smooth discharge of the material, and also ensures the support of the long shaft, making the equipment structure more reasonable and compact.

[0020] 3. This utility model achieves precise control of the hydrolysis reaction temperature by installing a temperature-controlled electric heater on the outside of the hydrolysis tank and setting multiple internal guide plates on the inner wall, providing a suitable temperature environment for lignin hydrolysis; the internal guide plates can effectively guide the flow of materials, and together with the spiral stirring blades, further enhance the mixing uniformity of materials, promote the full progress of the hydrolysis reaction, significantly improve the reaction efficiency and lignin conversion rate, and ensure the quality and yield of hydrolysis products. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a partial structural schematic diagram of the present invention;

[0023] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0024] The meanings of the labels in the diagram are as follows:

[0025] 1. Hydrolysis tank body; 10. Conical cylinder; 11. Discharge pipe; 12. Discharge valve; 13. Liquid inlet pipe; 14. Raw material pipe; 141. Top cover; 15. Support leg; 151. Support base; 16. Temperature-controlled electric heater; 17. Internal guide plate;

[0026] 2. Servo motor; 20. Long shaft; 21. Spiral stirring blades; 211. Fitting ring;

[0027] 3. Horizontal support rod; 30. Support ring; 31. Annular groove; 32. Through hole. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-3 This utility model provides a technical solution: a hydrolysis tank for lignin from agricultural and forestry solid waste with a spiral stirring structure, comprising a hydrolysis tank body 1. Two symmetrically arranged servo motors 2 are fixedly installed on the top of the hydrolysis tank body 1. The output shafts of the servo motors 2 are connected via couplings to a vertically positioned long shaft 20 extending into the hydrolysis tank body 1. Spiral stirring blades 21 are fixedly installed on the long shaft 20 within the hydrolysis tank body 1, achieving dual-power driven stirring, enhancing stirring power, and enabling the spiral stirring blades 21 to more efficiently stir the lignin material from agricultural and forestry solid waste, improving the uniformity of material mixing and stirring efficiency. Simultaneously, the dual servo motor design ensures the stability of the stirring system; even if one motor fails, the other motor can still maintain a certain stirring function, reducing the risk of equipment downtime.

[0030] In this embodiment, a fitting ring 211 is fixedly installed on the bottom end of the long shaft 20, and a horizontal support rod 3 is fixedly installed on the bottom inner wall of the hydrolysis tank 1. Two symmetrical support rings 30 are fixedly installed on the top surface of the horizontal support rod 3. An annular groove 31 is provided in the support ring 30. The bottom end of the long shaft 20 is located in the annular groove 31 and is rotatably connected to the annular groove 31. The fitting ring 211 covers the upper surface of the support ring 30, effectively distributing the weight of the long shaft 20 and the spiral stirring blade 21, avoiding the weight being entirely applied to the servo motor 2, preventing the motor from being damaged due to overload, and ensuring the stability and smoothness of the rotation of the long shaft 20, extending the service life of the stirring components and the motor, and ensuring that the stirring process continues to be carried out efficiently.

[0031] like Figure 3 As shown, a through hole 32 is provided at the center of the bottom wall of the annular groove 31. The bottom of the through hole 32 is connected to the inside of the hydrolysis tank 1, which allows liquid that accidentally enters the annular groove 31 to be discharged into the hydrolysis tank 1 through the through hole 32, preventing liquid from accumulating in the annular groove 31 and preventing the rotating parts between the bottom end of the long shaft 20 and the annular groove 31 from rusting and corroding due to liquid residue. This ensures the reliability and durability of the rotating connection parts of the long shaft 20 and reduces the equipment maintenance cost and frequency.

[0032] like Figure 1As shown, a conical cylinder 10 is fixedly installed at the bottom of the hydrolysis tank 1, and a horizontal support rod 3 is fixedly installed on the inner wall of the conical cylinder 10. The conical cylinder 10 is funnel-shaped, and the plane of the inner wall of the conical cylinder 10 is inclined downward at 45°~60°. A discharge pipe 11 is fixedly installed at the bottom end of the conical cylinder 10, and a discharge valve 12 is fixedly installed on the discharge pipe 11. While ensuring that the horizontal support rod 3 stably supports the long axis 20, the characteristics of the conical structure are utilized to allow the material after the hydrolysis reaction to quickly and smoothly converge towards the bottom end of the conical cylinder 10 under the action of gravity and finally be discharged through the discharge pipe 11. This avoids material residue at the bottom of the tank, improves discharge efficiency, facilitates the subsequent collection and treatment of hydrolysis products, and also helps to keep the inside of the hydrolysis tank 1 clean.

[0033] like Figure 1 As shown, a liquid inlet pipe 13 for liquid introduction is fixedly installed at the top of the hydrolysis tank 1, and a raw material pipe 14 for raw material introduction is fixedly installed at the top of the hydrolysis tank 1. A top cover 141 is hinged to the top surface of the raw material pipe 14. The liquid inlet pipe 13 facilitates the introduction of the liquid reagents required for the reaction into the hydrolysis tank 1, and the raw material pipe 14 is used to add lignin raw materials from agricultural and forestry solid waste. The hinged top cover 141 is opened when adding materials and closed after adding materials. This ensures the convenience of the material adding operation and prevents materials from splashing out and external impurities from entering during the hydrolysis reaction, maintaining the stability of the internal reaction environment of the hydrolysis tank 1 and ensuring the smooth progress of the hydrolysis reaction.

[0034] like Figure 1 As shown, multiple support legs 15 are fixedly installed at the bottom of the hydrolysis tank 1, and a support base 151 is fixedly installed at the bottom end of each support leg 15, providing stable support for the hydrolysis tank 1. This allows the hydrolysis tank to be placed stably on the work site, preventing equipment shaking from affecting the stirring and reaction effects. The support base 151 increases the contact area with the ground, enhancing the stability and shock resistance of the equipment, adapting to different working ground conditions, and ensuring the safety and reliability of the hydrolysis tank during operation.

[0035] like Figure 1As shown, a temperature-controlled electric heater 16 is fixedly installed on the outer cylinder of the hydrolysis tank 1, and multiple internal guide plates 17 are fixedly installed on the inner wall of the hydrolysis tank 1. The upper and lower sides of the internal guide plates 17 are both inclined surfaces with an inclination angle between 30° and 60°. The temperature-controlled electric heater 16 can accurately control the hydrolysis reaction temperature, providing a suitable thermal environment for lignin hydrolysis, ensuring that the reaction is carried out under optimal temperature conditions, and improving the reaction rate and product quality. The internal guide plates 17 can change the flow path of the material, guiding the material to form a more effective flow trajectory in the hydrolysis tank 1. Working in synergy with the spiral stirring blades 21, they further enhance the mixing uniformity of the material, promote the full hydrolysis reaction, significantly improve the reaction efficiency and lignin conversion rate, and ensure the yield and quality of the hydrolysis products.

[0036] Finally, it should be noted that the unloading valve 12, temperature-controlled electric heater 16, and servo motor 2 involved in this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle space of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and the matching controller and power supply, are connected by wires. The specific connection method should refer to the working principle in this utility model. The electrical connection between each electrical component is completed in the order of operation. The detailed connection method is a technology known in the art.

[0037] When using the agricultural and forestry solid waste lignin hydrolysis tank with a spiral stirring structure of this utility model, first open the hinged top cover 141 on the top surface of the raw material pipe 14, and put the agricultural and forestry solid waste lignin raw material into the hydrolysis tank 1 through the raw material pipe 14. Then, use the liquid inlet pipe 13 to introduce the liquid reagent required for the reaction. After that, close the top cover 141, and then start the servo motor 2 symmetrically located on the top of the hydrolysis tank 1. The servo motor 2 drives the long shaft 20 to rotate, and the spiral stirring blades 21 installed on the long shaft 20 start to spirally stir the material. At the same time, turn on the temperature control electric heater 16 on the outer cylinder to adjust the temperature inside the hydrolysis tank 1 to the set value suitable for the reaction.

[0038] During the reaction, the bottom rod of the long shaft 20 rotates stably in the annular groove 31 of the support ring 30, and the fitting ring 211 cooperates with the support ring 30 to ensure the stability of the stirring; the internal guide plate 17 guides the flow of materials and works in conjunction with the spiral stirring blades 21 to improve the uniformity of material mixing and promote the full progress of the hydrolysis reaction.

[0039] After the hydrolysis reaction is completed, the discharge valve 12 on the discharge pipe 11 is opened. Since the bottom cone 10 of the hydrolysis tank 1 is funnel-shaped and the inner wall is inclined, the material quickly gathers to the bottom of the cone 10 under the action of gravity and is discharged through the discharge pipe 11.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A hydrolysis tank for lignin in agricultural and forestry solid waste with a spiral stirring structure, comprising a hydrolysis tank body (1), characterized in that: Two symmetrical servo motors (2) are fixedly installed on the top of the hydrolysis tank (1). The output shaft of the servo motor (2) is connected to a long shaft (20) that is vertically arranged and extends into the hydrolysis tank (1) via a coupling. A spiral stirring blade (21) is fixedly installed on the long shaft (20) located in the hydrolysis tank (1). A fitting ring (211) is fixedly installed on the bottom end of the long shaft (20). A horizontal support rod (3) is fixedly installed on the bottom inner wall of the hydrolysis tank (1). Two symmetrical support rings (30) are fixedly installed on the top surface of the horizontal support rod (3). An annular groove (31) is provided in the support ring (30). The bottom end of the long shaft (20) is located in the annular groove (31) and is rotatably connected to the annular groove (31). The fitting ring (211) covers the upper surface of the support ring (30).

2. The lignin hydrolysis tank for agricultural and forestry solid waste with a spiral stirring structure according to claim 1, characterized in that: A through hole (32) is provided at the center of the bottom wall of the annular groove (31), and the bottom of the through hole (32) is connected to the inside of the hydrolysis tank (1).

3. The lignin hydrolysis tank for agricultural and forestry solid waste with a spiral stirring structure according to claim 1, characterized in that: A conical cylinder (10) is fixedly installed at the bottom of the hydrolysis tank (1), and the horizontal support rod (3) is fixedly installed on the inner wall of the conical cylinder (10).

4. The lignin hydrolysis tank for agricultural and forestry solid waste with a spiral stirring structure according to claim 3, characterized in that: The conical cylinder (10) is funnel-shaped, and the plane of the inner wall of the conical cylinder (10) is inclined downward at 45°~60°.

5. The lignin hydrolysis tank for agricultural and forestry solid waste with a spiral stirring structure according to claim 4, characterized in that: The bottom end of the conical cylinder (10) is fixedly installed with a discharge pipe (11), and a discharge valve (12) is fixedly installed on the discharge pipe (11).

6. The lignin hydrolysis tank for agricultural and forestry solid waste with a spiral stirring structure according to claim 1, characterized in that: A liquid inlet pipe (13) for liquid inlet is fixedly installed at the top of the hydrolysis tank (1), and a raw material pipe (14) for raw material inlet is fixedly installed at the top of the hydrolysis tank (1), with a top cover (141) hinged to the top surface of the raw material pipe (14).

7. The lignin hydrolysis tank for agricultural and forestry solid waste with a spiral stirring structure according to claim 1, characterized in that: The bottom of the hydrolysis tank (1) is fixedly equipped with multiple support legs (15), and the bottom end of the support legs (15) is fixedly equipped with a support base (151).

8. The lignin hydrolysis tank for agricultural and forestry solid waste with a spiral stirring structure according to claim 1, characterized in that: A temperature-controlled electric heater (16) is fixedly installed on the outer cylinder of the hydrolysis tank (1), and multiple internal guide plates (17) are fixedly installed on the inner wall of the hydrolysis tank (1).

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